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HomeMy WebLinkAboutComprehensive Sewer System Plan (Long-Range Wastewater Mgmt Plan) 1992 E
CITY OF RENTON
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LONG-RANGE
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1 "p/. mANAGEMENT PLAN
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SERVICE
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A Comprehensive
Sewer System Plan-1992
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Prepared By
RH2 Engineering, PS.
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CITY OF RENTON
LONG-RANGE WASTEWATER MANAGEMENT PLAN
March 1992
City Council
Bob Edwards
Kathy Keolker-Wheeler
Nancy L. Matthews
Toni Nelson
Jesse Tanner
Timothy J. Schlitzer
Richard M. Stredicke
Mayor
Earl Clymer
Public Works Director
Lynn Guttmann
Attorney
Warren and Kellogg, P.S.
Department of'Ecolozv
Jacques Faigenblum
Prepared By
RH2 Engineering, P.S.
1
CERTIFICATION
This Long-Range Wastewater Management Plan for the City of Renton, 1992, has been prepared
under the direction of the following Registered Professional Engineers:
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Richard H. Harbert, P.E. ss/ONAL SNv
EXPIRES 5/2./.12_11
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CITY OF RENTON, WASHINGTON
RESOLUTION NO. 2892
A RESOLUTION OF THE CITY OF RENTON, WASHINGTON, ADOPTING
THE 1992 LONG-RANGE WASTEWATER MANAGEMENT PLAN (;SANITARY
SEWER COMPREHENSIVE PLAN) .
WHEREAS, the City Council was presented the 1992 Long-Range
Wastewater Management Plan; and
WHEREAS, the plan was discussed at a meeting of the Utilities
Committee; and
WHEREAS, a Public Hearing was held on the plan before the City
Council on March 9 , 1992; and
WHEREAS, the plan is compatible with the intent of the City' s
adopted and proposed Comprehensive Plans .
NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF RENTON,
WASHINGTON, DO RESOLVE AS FOLLOWS :
SECTION I . The above recitals are found to, be true and
correct in all respects .
SECTION II . The 1992 Long-Range Wastewater Management Plan
is hereby adopted by the City of Renton.
PASSED BY THE CITY COUNCIL this 6th day of April , 1992 .
•
NU,1 .Nan N.°--$N .
. M is
Deputy Cit Clerk
APPROVED BY THE MAYOR this6th day of April , 1992 .
--7E /1.&. (\S)
rl Clymer, May.
hoApprove to m•
Law nce J. Warr , City Attorney
RES . 198 : 3/16/92 .
TABLE OF CONTENTS
CHAPTER I
SUMMARY AND INTRODUCTION
Purpose of Plan 1-1
Authorization I 1-2
Scope of Study 1-2
Existing Sewer System 1-3
Policies and Design Criteria ! 1-3
Land Use and Adjacent Systems 1-3
Key Issues ! 1-4
System Analysis 1-4
SEPA ! 1-4
Conclusions and Recommendations ! 1-5
System Improvements 1-6
How to Use This Plan 1-8
CHAPTER II
Ii
OVERVIEW OF EXISTING SEWER SYSTEM
Overview of Existing System 2-1
System History ! 2-1
System Components i 2-2
Wastewater Collection Basins 2-2
Interceptors and Collection Systems ! 2-2
Existing Sewers 2-3
Interceptors 2-5
METRO Connections 2-6
Lift Stations 2-6
Telemetry and Control System 2-7
Operation and Maintenance 2-7
Definition of Terms 2-7
Figure 1 - Existing Sewer System &Wastewater Collection Basins 2-10
Figure 2 - Sanitary Sewer Hydraulic Profile 2-11
Figure 3 - Sanitary Sewer Lift Stations 2-12
CHAPTER III
OPERATIONAL POLICIES
Introduction j 3-1
Wastewater Utilities Policies 3-3
TABLE III-1 City of Renton Wastewater Utility Policy Outline 3-2
1
CHAPTER IV
LAND USE POLICIES, ADJACENT SYSTEMS & DESIGN CRITERIA
Introduction 4-1
Study Area 4-1
Land Use 4-2
City of Renton 4-2
Aquifer Protection Ordinance 4-8
Unincorporated King County 4-8
Annexation 4-9
Sphere of Influence 4-9
Adjacent Utility Systems/Joint Use and Service Agreements 4-9
Analysis and Design Criteria 4-13
Wastewater Flow Rates - Definition 4-13
Wastewater Flow Criteria 4-13
Sanitary Sewer Design Criteria 4-16
Lift Station Design Criteria 4-17
Elimination of Lift Station Facilities 4-19
TABLE W-1 Section 3.A of the Comprehensive Land Use Plan 4-3
TABLE IV-2 Comprehensive Land Use Categories 4-4
TABLE W-3 Existing Land Use for The City of Renton (1989) 4-5
TABLE W-4 Vacant Land by Zoning Designation 4-5
TABLE W-5 Wastewater Flow Criteria 4-15
TABLE IV-6 Sanitary Sewer Design Criteria 4-18
FIGURE 4 Total Wastewater Flow and Land Use Acreage • 4-6
FIGURE 5 Study Area 4-20
FIGURE 6 Existing Land Use 4-21
FIGURE 7 Adjacent Utility Systems 4-22
CHAPTER V
SYSTEM ANALYSIS & RESULTS
Introduction 5-1
Hydraulic Analysis 5-2
Structural Analysis 5-3
System-wide Concerns 5-4
METRO-Interceptor Surcharge 5-4
Adjacent Utility Systems 5-4
Structural Problems 5-5
Earthquake Preparedness 5-6
Wastewater Collection Basins 5-7
May Creek Basin 5-8
Lower Cedar River Basin 5-10
Lake Washington East Basin 5-12
Black River Basin 5-15
Lake Washington West Basin 5-16
Duwamish Estuary Basin 5-17
2
Lift Station 5-17
Lift Station No. 1 - Airport 5-17
Lift Station No. 2 - Azalea Lane 5-19
Lift Station No. 3 - Baxter 5-19
Lift Station No. 4 - Boeing 5-19
Lift Station No. 5 - Cottonwood 5-19
Lift Station No. 6 - Denny's 5-20
Lift Station No. 7 - Devil's Elbow 5-20
Lift Station No. 8 - Earlington School 5-21
Lift Station No. 9 - East Valley 5-21
Lift Station No. 10 - Falcon Ridge 5-21
Lift Station No. 11 - Highgate 5-22
Lift Station No. 12 - Honey Creek 5-22
Lift Station No. 13 - Honeydew I 5-22
Lift Station No. 14 - Lake Washington Beach 5-22
Lift Station No. 15 - Lake Washington Flush 5-23
Lift Station No. 16 - Lake Washington No. 2 5-23
Lift Station No. 17 - Lind Avenue 5-23
Lift Station No. 18 - Misty Cove 5-23
Lift Station No. 19 - Sears 5-24
Lift Station No. 20 - Summer Wind 5-24
Lift Station No. 21 - Sunset 5-24
Lift Station No. 22 - Talbot Crest 5-24
Lift Station No. 23 - Union 600 5-25
Private Lift Stations 5-25
Telemetry and Control System 5-25
Alarm Abnormal Events 5-27
Emergency Information 5-27
Maintenance Information 5-28
React to System Emergencies 5-28
Reduce Operating Costs 5-28
Convenient Storage Media 5-29
Schedule Maintenance Tasks 5-29
Improve Site Safety 5-29
Existing Telemetry System 5-30
Proposed System Improvements 5-30
Wastewater Quality 5-31
Domestic Wastewater 5-32
Industrial Waste 5-32
Wastewater Quality Problems 5-33
TABLE V-1 Lift Station Inventory Summary 5-18
TABLE V-2 Commerical and Industrial Wastewater Producers 5-33
CHAPTER VI
RECOMMENDED IMPROVEMENTS
Introduction 6-1
CIP Rankings 6-1
Capital Improvement Description 6-4
3
May Creek Basin 6-6 I'
Lower Cedar River Basin 6-10
South Highlands Sewer Collection System Replacement 6-14
Lake Washington East Basin 6-15
North Highlands Sewer Collection System Replacement 6-18
Black River Basin 6-19
Scenic Hills Sewer Collection 6-21
Talbot Hill Sewer Collection System Replacement 6-21
Lake Washington 6-22
West Renton Sewer Collection System Replacement 6-23
Duwamish Estuary Basin 6-24
System Wide Improbements 6-24
Proposed Improvements By Priority 6-26
Proposed Improvement By Project Type 6-26
Proposed Capital Improvement Plan Scheudle and Cash Flow 6-29
TABLE VI-1 6-3
TABLE VI-2 6-5
TABLE VI-3 Proposed Improvements Summary by Priority 6-26
TABLE VI-4 Proposed Improvements Summary by Project Type 6-27
TABLE VI-5A Cost Breakdown for Proposed Improvements 6-29
TABLE VI-5B Cost Breakdown for Proposed Improvements 6-30
TABLE VI-6A Funding Sources for Proposed Improvements 6-31
TABLE VI-6B Funding Sources for Proposed Improvements 6-32
FIGURE VI-8 6-33
CHAPTER VII
OPERATION AND MAINTENANCE
Sanitary Sewer System Operation 7-1
Current Operation and Maintenance Program 7-1
Normal Operations 7-1
Organizational Structure 7-1
Communication 7-3
Equipment Availability 7-4
Records 7-6
Emergency Operations 7-7
Preventive Maintenance 7-7
Sewage Lift Stations 7-7
Wet Well Facilities 7-7
Sanitary Sewer System 7-7
Rolling Stock 7-8 j
Staffing 7-8
Maintenance and Operations Staff 7-8
Wastewater Utility Engineering Staff 7-9
TABLE VII-1 City Personnel and Certification 7-2
TABLE VII-2 Wastewater Utility Department Equipment 7-4
4
TABLE VII-3 Staffing Time for Preventive Maintenance 7-9
TABLE VII-4 Staffing Time for Operation Tasks 7-9
TABLE VII-5 Wastewater Utility Engineering Staff Time 7-12
CHAPTER VIII
Financial Analysis 8-1
Wastewater Utility Expenses and Revenue Requirements 8-1
Operating Costs and Revenues 8-2
Municipality of Metropolitan Seattle (METRO) Charges 8-2
City of Renton Operations and Maintenance 8-2
Costs 8-2
Revenue Requirements 8-8
CIP Costs and Revenues 8-8
Capital Improvement Plan Costs 8-8
Revenue Sources for CIP 8-9
City Share 8-9
Other Revenue Sources For CIP 8-10
Contingency Revenue Plan 8-13
Financial Analysis 8-13
TABLE VIII-3A Cost Breakdown for Proposed Improvements 8-6
TABLE VIII-3B Cost Breakdown for Proposed Improvements 8-7
FIGURE VIII-9 City's Revenue Breakdown Summary 8-3
FIGURE VIII-10 Total Revenue Requirement Summary 8-4
FIGURE VIII-11 CIP Financial Analysis Summary 8-5
APPENDICES
APPENDIX A
Sewage Lift Station Data Sheet
APPENDIX B
Joint Use Agreements
APPENDIX C
City of Renton Resolution No. 2764
APPENDIX D
City of Renton Municipal Code Title VIII - Chapter 7 Sewers
APPENDIX E
Sepa Checklist
APPENDIX F
Bibliography
5
rs
CHAPTER I
SiMARY AND
INTRODUCTION
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"We Are All In This Boat Together,"sculpture by Harold Balazs sited along the Cedar River Trail,
adjacent to the Renton Senior Center. The sculpture was dedicated in 1991.
CHAPTER I
SUMMARY 'AND INTRODUCTION
A. PURPOSE OF PLAN
The purpose of the Renton Long-Range Wastewater Management Plan (the plan) is to present
policy and design criteria and to recommend facility improvements. This plan will be used as
a guide in maintaining and improving the sanitary sewer system over the next five years in order
to provide the residents of the City with an effective, safe and reliablelsewer system. This plan
is not an update to the Comprehensive Sewer System Plan adopted in 1983; it is a complete re-
evaluation of the entire sanitary sewer system. A summary of this plan's findings and
recommendations are presented in this chapter.
The plan results from a study that evaluated the existing sanitary sewer system and developed
recommendations to resolve existing deficiencies and concerns,and to accommodate growth. The
improvements identified in this plan are based on the requirements of the Washington State
Department of Health, Washington State Department of Ecology and City Policy.
The City of Renton adopted its last Comprehensive Sewer System Plan in 1983. That plan
anticipated growth in the system and proposed improvements but did not foresee all of the issues
that have arisen since that time: 1) concerns for groundwater protection; 2) significant increases
in construction cost, and 3) increases in land use densities. These issues and others are examined
in detail in this plan.
The Renton sanitary sewer system is large, and because of the topography, it is difficult to
comprehend. The condition of the current system, as well as the need for improvements, has
been documented in this report. Due to the complexity of this system and the number of issues
that must be addressed, this report is organized so that a reader may review a summary of it and
its recommendations in this chapter without reading the background or detailed information that
led to those results.
The plan provides a recognized framework for making decisions about sanitary sewer service in
the City of Renton. It is intended to aid decision makers as well as users, including the
Wastewater Utility, City Council members, the Mayor and staff,builders,developers,community
groups, and other government agencies. The plan will be a useful tool in the following ways:
• As a framework for improvements and operations that govern sanitary sewer
system developments in the City's service area. The plan provides a basis for
allocating improvements and costs to new sanitary sewer system users such as
home and apartment builders, and commercial developers.; It thus provides City
officials with partial direction for approving building permits and upgrading the
system.
1-1
CHAPTER ONE
• To provide a guideline for improving the existing system so that each customer
receives adequate sanitary sewer service. It is intended that City officials be able
to use these guidelines to maintain a high quality of service at a reasonable cost.
• To provide a basis for accommodating changes that occur but that cannot be
forecast in the plan. To this end, the plan lists policy issues and operational
criteria that can be used to develop alternatives and directions for development,
improvements and operations.
Several members of the City staff have a detailed understanding of the City's sanitary sewer
system and have provided valuable input for this plan. Mr. Richard Anderson, Mr. Randall
Parsons, Mr. Mike Benoit,Mr. David Christensen, Mr. Gary Morrison and Mr. Jack Crumley are
thanked for their assistance.
B. AUTHORIZATION
On November 7, 1988, the City of Renton authorized RH2 Engineering, P. S., to prepare the
update to the Comprehensive Sewer System Plan in conformance with the Chapter 173-240
WAC.
C. SCOPE OF STUDY
The scope of study includes the following:
• Analyze the existing system to determine its deficiencies and needed
improvements.
• Document City Council policies regarding growth and annexation.
• Coordinate plan with adjacent utility systems and identify areas for potential
service area boundary adjustments.
• Estimate wastewater flow rates using land use designations.
• Prepare a Capital Improvement Program and estimate its construction costs.
• Document, in summary form, the existing operations and maintenance program
and recommend improvements and staff additions.
• Analyze the recent financial performance of the sewer utility and develop a
financial operating projection statement.
1-2
(Summary and Introduction
D. EXISTING SEWER SYSTEM
II
The City of Renton owns, operates, and maintains its sanitary sewer system. This system
consists of approximately 153 miles of gravity sewer, 23 sewage lift stations and force mains,
and approximately 3000 manholes. Wastewater is discharged to METRO facilities at 55 locations
within the City from which it is conveyed to and treated by METRO'sl Renton Treatment Plant.
The existing sanitary sewer system is shown on FIGURE 1.
The City of Renton is divided into six major wastewater collection basins, each of which consist
of one or more subbasins. For the most part, these collections basins and subbasins follow the
natural drainage patterns of the Renton service area. These wastewater collections basins are
shown on FIGURE 1. i
I .
E. POLICIES AND DESIGN CRITERIA
Policies,design criteria, and standards used for planning and operating the sanitary sewer system
are based on laws and policies which originate from several sources. I All these policies and
standards have the general purpose of providing an acceptable level of service to the sanitary
sewer customers. Policies presented in this plan include the following: customer service policies,
financial policies, facility policies, and organizational policies. Analysis and design criteria for
the sanitary sewer system are based on standards presented in the Criteria for Sewage Works
Design prepared by the Washington State Department of Ecology as well as standards set by the
Municipality of Metropolitan Seattle (METRO) and the City of Renton.
F. LAND USE AND ADJACENT SYSTEMS
The land use proposed in the 1986 Compendium of the City's Comprehensive Land Use Plan was
used to estimate wastewater flow rates at saturation conditions within the City. These saturation
wastewater flow rates were used to analyze existing sewage facilities and to plan for the location
and sizing of new sewage facilities. Existing land use designations are shown on FIGURE 6.
There are several adjacent utility systems surrounding the City's existing service area,which limit
the expansion of the City's sewer system. The greatest potential for expansion of the City's
sanitary sewer system is within the May Creek and East Renton areas which currently either do
not have existing or adequate sanitary sewer facilities. The adjacent utility entities are shown
on FIGURE 7.
_ I
1-3
i
CHAPTER ONE
G. KEY ISSUES
This plan addresses the following key issues:
• Excessive infiltration and inflow.
• Extension of sanitary sewer service areas.
• Aquifer protection and exfiltration from sanitary sewers.
• Sewer system deficiencies including hydraulic constraints, substandard facilities, and
replacement of old pipes.
• Annexation and sewer service outside City limits.
Several of these issues were also addressed during preparations of the 1983 Comprehensive
Sewer Plan.
H. SYSTEM ANALYSIS
A hydraulic and a structural analysis were conducted to determine how well the existing system
achieved current policies and technical, engineering standards. The plan identifies where the
system failed to meet those objectives and recommends improvements to the existing system or
construction of new facilities to achieve them.
A hydraulic analysis is a computer simulation of the existing system to determine its ability to
convey wastewater saturation flow rates. A computer model was developed and used to analyze
the system and to size future facilities. This computer model will continue to be used by the City
as an analytical, planning and management tool. A structural analysis, which is a visual
inspection of the existing system, was also conducted and was based on video, as well as actual,
physical inspections.
•
The analysis revealed deficiencies that cover a broad range of areas. The hydraulic deficiencies
identified are inadequate slopes (inability to achieve carrying velocities), insufficient capacity to
handle wastewater flow rates,pipes that are less than 8-inches in diameter and sections that have
reverse slopes. Structural deficiencies identified are pipe sag, and root and grease problems. The
Renton sewer system has these hydraulic and structural problems in varying degrees throughout
the system.
I. SEPA
A SEPA Checklist has been prepared for this plan and is presented in Appendix E. It is
anticipated that this proposed plan will not have a probable significant adverse impact on the
environment and that an environmental impact statement (EIS) will not be required. However,
1-4
Summary and Introduction•
many of the projects proposed herein will require SEPA checklists and some will require an
environmental impact statements.
- I
J. CONCLUSIONS AND RECOMMENDATIONS
'
In the development of this plan, the following conclusions were reached:
1. Two areas are seriously deficient in capacity: 1) the EastRenton area, specifically
the South Highlands, Maplewood, and Heather Downs Subbasins within it,
currently has a moratorium on connections until capacity improvements have been
made, and 2) the Honey Creek Subbasin within the May Creek Basin is at
capacity and has some marginally reliable facilities.
2. A substantial percentage of the system has reached the end of its useful life and
needs to be replaced. These areas include the Downtown, North Renton and
Highland areas.
3. The City needs to perform detailed testing to obtain better engineering information
regarding the operation and hydraulic behavior of the system. Specifically, a
detailed infiltration and inflow project should be performed as well as a video
inspection to affirm this plan's evaluation and provide 'ian improved basis for
future planning.
4. Design and construction standards need to be modified for use in aquifer
protection areas. We recommend that a zero leakage policy be adopted for sewers
within the Downtown and Maplewood aquifers. A specific example of an
extremely high water quality risk is METRO's Cedar River Interceptor sewer
which currently traverses through the Downtown aquifer. We recommend that this
sewer be relocated so that a failure or leakage is manageable, and contamination
of the City's sole source aquifer is avoided. However, a zero leakage policy
requires a special type of construction which would substantially increase costs
over standard construction costs.
5. We recommend that the City adopt the following policy regarding extension of
sewer service; where the City annexes an area that is currently unsewered by
another municipality, the City should provide sewer service; where annexation
occurs and sewer service is provided by another municip �ality, the City should
purchase the facilities from the adjacent municipality, based on the actual
depreciated cost the municipality incurred from providing the facilities to obtain
service, so long as those facilities flow by gravity to the City system.
6. The rate increases recommended in this plan should be considered as the
minimum level of increases necessary to implement the City-funded portion of the
recommended improvements. Currently, new development pays a major portion
1-5
CHAPTER ONE
of the remaining cost of recommended improvements. If funding from this
source, such as the special utility connecting fee, is not available, the City's share
of these construction costs will most likely increase.
7. The City's sewer system is complicated; the preceding conclusions and
recommendations are based on the highest priority issues, which, in our opinion,
must be confronted. However, we propose a substantial number of additional
recommended facility improvements and modifications which are further described
in Chapter VI. Whenwe assigned them priorities, we took into consideration the
following characteristics:
a. Whether a facility is structurally deteriorating or has hydraulic
capacity problems.
b. Whether an improvement increases overall efficiency by reducing
operation and maintenance costs.
c. Whether an improvement helps protect the environment or reduces
a threat to public health.
K. SYSTEM IMPROVEMENTS
The following is a summary of proposed improvements to the Renton sanitary sewer system,
presented in this Comprehensive Sewer System Plan, to correct existing facility deficiencies and
to accommodate growth.
1. Adopt this Comprehensive Sewer System Plan in order to establish consistent City
policies and to provide the capability of efficiently planning the sanitary sewer
facility improvements. This plan should be updated at intervals of no greater than
five years in order to accommodate unforeseen changes in existing assumptions
and conditions, and for adjusting budgets and sewer service rates.
2. Replace aging and substandard sanitary sewer facilities within the City. These
sewers present a significant potential danger to the environment and public health.
3. Continue development of the gravity sewer system in order to allow the
elimination of existing sewage lift stations. These lift stations are less reliable,
require higher maintenance and operation costs, and cause more adverse impacts
to downstream facilities than do properly planned gravity sewer systems.
4. Rehabilitate or replace the sewage lift stations that are considered to be permanent
sewage facilities. These improvements will reduce maintenance costs and increase
system reliability.
1-6
Summary and Introduction
5. Examine programs and projects that will reduce wastewater flow rates and
infiltration and inflow within the sanitary sewer system. These may be cost-
effective methods that could possibly reduce the size of sanitary sewer facilities,
thereby reducing capital expenditures.
6. Implement sanitary sewer rate increases in order to finance capital improvement
costs as well as operation and maintenance costs in accordance with the utility
rates study.
L. IMPLEMENTATION
In 1990 the Washington State Legislature enacted the Growth Management Act (ESHB 2929)
in order to preserve the environment and quality of life while providing for economic growth.
This act requires cities and counties in the populated regions of the state to develop coordinated
comprehensive plans that will identify areas where urban growth is appropriate and provide
necessary transportation and utility improvements to them. The adoption of the plan is the
Wastewater Utility's first step in implementing the requirements of the Growth Management Act.
The majority of this document presents information that will be the foundation for the
Wastewater Utility plans for the future of the system. This information includes a general
overview of the existing sewer system and a definition of terms; a presentation of specific
policies that guide the management and operation of the sewer system; an examination of the
operation and maintenance programs for the utility; and a description and analysis of all
components in the existing system with recommended improvements. These items are
specifically directed toward the effective and efficient operation of the utility.
The first phase of this plan presents a snapshot of land use under current land use policies. It
examines the current land use plan adopted in 1986, uses those designations_to develop the
saturation flow rates for the model, and establishes an operational plan to allow for the
development of those land uses. It is important that this step be accomplished as any loans or;
grants we receive will be based on this information.
As part of this process, the Wastewater Utility's goal is to accomplish, pursuant to adoption of
this plan, the following implementation tasks:
A. Update the fmancial models developed in the rate management analysis (Water
and Wastewater Rates Management Analysis, RH2 Engineering P.S, November
1989)during 1992,in a manner consistent with the City's budget schedule, so that
rates can be adjusted to accurately reflect the current financial situation within the
utility.
B. Complete the inventory of the sewer system, verifying the as-built records and
gathering data on those parts of the system that are not recorded.
1-7
CHAPTER ONE
C. Develop and implement a program to meter flows in order to gather data to
calibrate the sanitary sewer computer model.
D. Use the sewer model to develop a timetable of availability for sewers in
unsewered portions of the City and the Urban Growth Areas adopted by the City.
E. Prepare an update to the 1991 Long-Range Wastewater Management Plan if
necessary, to incorporate the new adopted land use designations
F. Update the sewer model, if necessary, to reflect the new adopted land use
designations and concurrency standards.
M. HOW TO USE THIS PLAN
This plan is arranged in eight major sections:
Chapter I provides a summary of the recommendations and conclusions presented in this
plan.
Chapter II provides a general overview of the existing sewer system and a definition of
terms.
Chapter III presents specific policies that guide the operation of the sewer system.
Chapter IV examines the land use policies thatguide how the City of Renton
accommodates growth; and presents the land uses,joint use agreements and design criteria
that were used to develop wastewater saturation flow rates on which the computer
hydraulic analysis was based.
Chapter V describes and analyzes all components in the existing system and presents their
recommended improvements.
•
Chapter VI further describes the improvements necessary to resolve existing deficiencies
and accommodate growth. The proposed improvements are also listed by priority and by
project type.
Chapter VII examines the operation and maintenance programs for the Wastewater Utility.
Chapter VIII presents the costs of the proposed improvements and the anticipated user
increases which will be necessary to support them.
1-8
CHAPTER II
VERviEw OF
ExISTI1'1G SYSTEM
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CHAPTER II
OVERVIEW OF EXISTING SEWER SYSTEM
This chapter presents an overview of the existing sewer system. A more extensive description
and analysis of the system, along with recommended improvements, can be found in Chapter 5.
A. OVERVIEW OF EXISTING SYSTEM
r- ,
The City of Renton is approximately 16 square miles with a population of over 30,000.
Approximately 70 percent of the land area and 80 percent of the population is currently served
by sanitary sewers. The City of Renton's collection system is municipally owned, operated and
maintained and is managed by the City of Renton's Planning/Building/Public Works Department
(Public Works).
The City maintains 23 sewage lift stations; an additional six sewage lift stations are privately
owned and maintained. Wastewater is discharged to METRO facilities at 55 locations within the
City, from which it is conveyed to and treated by METRO's Renton Treatment Plant. The City
of Renton system contains approximately 3,000 manholes and 10,187 customer connections.
FIGURES 1, 2 and 3 illustrate the existing sewer system in plan and profile views.
B. SYSTEM HISTORY
Sanitary sewer facilities were first constructed in the downtown area of the City of Renton in
1910. Prior to that it was common practice to dispose of wastewater on-site or to directly
discharge it to the local estuaries. By 1940 the City's population had grown to 4,800; wastewater
was collected and treated in a large septic system located adjacent to the Black River channel.
During the 1940s,federal housing was constructed in the City to accommodate workers employed
by defense industries. By 1956 the wastewater collection system served a population of 14,800
people within the City's service area. By that time wastewater was treated in a secondary
treatment plant located near the current Renton High School Stadium. This treatment plant
discharged treated wastewater to the Cedar River.
In 1958 the Municipality of Metropolitan Seattle (METRO) was formed to solve the growing
problem of pollution in Puget Sound, Lake Washington and surrounding waters. METRO
developed a regional plan for wastewater collection and treatment facilities in 1959 and assumed
operating responsibilities for the regional interceptors and waste treatment systems in 1962,
including Renton's secondary treatment plant. The new secondary treatment plant was
constructed between 1956 and 1962 near the intersection of Grady Way and Monster Road and
discharged into the Duwamish Water Way. This location is the current site of METRO's Renton
Treatment Plant, which serves as one of the regional treatment facilities. The City of Renton
sanitary sewers now discharge to these METRO facilities.
2-1
CHAPTER TWO
C. SYSTEM COMPONENTS
The purpose of a sanitary sewer is to convey wastewater from its source to a point of treatment.
Since the generation of wastewater can vary considerably, there is seldom any control over the
volume of wastewater that must be conveyed at any particular time. For this reason the sanitary
sewer system is designed to accommodate a wide range of wastewater flow rates.
The best method for conveying wastewater is a gravity sewer system. A gravity sewer system
is made up of collector sewers, which.as their name implies, collect the wastewater from the
various sources. These collector sewers then convey the wastewater to interceptor sewers,which
convey it to the point of treatment.
The sanitary sewer system must be capable of transporting all of the constituents of the
wastewater stream, which include the suspended solids, floatable solids and liquid constituents.
In general, most of the floating materials are carried along with the flow stream; however,
suspended solids have a tendency to settle out of the waste stream, unless minimum carrying
velocities are achieved. This requires that the sanitary sewers be constructed with a minimum
slope to create a gravity flow which will result in a velocity that will continuously carry the
suspended solids portion of the waste stream.
Another major sewer system component, and typically the most vulnerable one, is the sewage
lift station. A lift station is needed when the sanitary sewer system must overcome topographic
restrictions that make it impossible or financially unfeasible to construct a gravity sewer.
However, some lift station are temporary, used only until the gravity sewer system can be built.
D. WASTEWATER COLLECTION BASINS
The City of Renton is divided into six major wastewater collection basins, as shown in FIGURE
1, which consist of one or more subbasins. These collection basins and subbasins predominantly
follow the natural drainage patterns of the Renton service area. The six major basins are 1) May
Creek, 2) Lower Cedar River, 3) Lake Washington East, 4) Black River, 5) Lake Washington
West, and 6) Duwamish Estuary.
E. INTERCEPTORS AND COLLECTION SYSTEMS
Interceptors are sewers that receive flow from collector sewers and convey wastewater to a point
for treatment or disposal. They are typically located in low lying or centralized areas in order
to facilitate the gravity flow of the wastewater. The interceptors and all other sewers make up
the collection system. Standards and guidelines for design and construction of sanitary sewers
are detailed in Chapter 4.
2-2
Overview of Existing Sewer System
The City of Renton has approximately 153 miles of gravity sewer within its service area as
displayed in plan view in FIGURE 1. The sanitary sewer collection system is primarily
comprised of 8-inch diameter sanitary sewers. The hydraulic profile, shown in FIGURE 2,
illustrates how wastewater flows through the system.
1. EXISTING SEWERS
The existing sanitary sewer system is constructed with a variety of different sewer sizes and pipe
materials. TABLE II-1 summarizes the lengths of pipe for the different pipe diameters and
materials. As illustrated in this table, a majority of the sanitary sewer system is constructed with
8-inch diameter pipe. This is consistent with the Department of Ecology criteria material for
minimum sanitary sewer sizing. The majority of pipe material within the existing system is
comprised of concrete and PVC pipe. The concrete pipe has been typically used for the older
sewers and larger diameter sewers, while the PVC pipe has been typically used for newer sewer
system installations up to 12-inches in diameter.
The City sanitary sewer system also contains approximately 3,000 manholes, which join the
various links of sanitary sewer pipe. These manholes vary in construction type from old brick
manholes to the newer precast concrete manholes. Many of the older manholes do not meet
current code for safety such as manhole covers which are less than 24-inches in diameter.
•
2-3
CHAPTER TWO
TABLE II-1: SUMMARY OF SANITARY SEWER SIZES AND PIPE MATERIAL
PIPE SIZE SUMMARY
PIPE DIAMETER LENGTH PERCENTAGE
6-inch 2.8 miles 1.8%
8-inch 93.5 miles 61.1% _--'
10-inch 5.3 miles 3.5%
12-inch 7.8 miles 5.1%
14-inch 0.2 miles 0.1%
15-inch 2.4 miles 1.6%
16-inch 0.1 miles 0.1%
18-inch 2.2 miles 1.4%
21-inch 0.8 miles 0.5% _
24-inch 1.5 miles 1.0%
Unknown 36.4 miles 23.8%
TOTALS 153 miles 100%
PIPE MATERIAL SUMMARY
PIPE MATERIAL LENGTH PERCENTAGE
Concrete Pipe 64 miles 41.8%
PVC Pipe 33 miles 21.6%
Vitrified Clay Pipe 8 miles 5.2%
Lined ductile iron pipe 5 miles 3.3%
Unknown pipe type 43 miles 28.1%
TOTALS 153 miles 100%
2-4
Overview of Existing Sewer System
2. INTERCEPTORS
A list of the sanitary sewer interceptors within the Renton system is presented below. These
interceptors are located in the following wastewater collection basins:
MAY CREEK BASIN
• Honey Creek Interceptor
• Proposed May Valley Interceptor
LOWER CEDAR RIVER BASIN
• Tiffany Park Interceptor
• South Highlands Interceptor
• Maplewood Interceptor
• Heather Downs Interceptor
• Proposed Parker PUD Interceptor
• Proposed East Renton Interceptor
LAKE WASHINGTON EAST BASIN
• Lakefront Force Main
• West Kennydale Interceptor
• North Highlands Interceptor
• Proposed East Kennydale
• Proposed Park Avenue
BLACK RIVER BASIN
• SW 16th Street Interceptor
• Talbot Hill Interceptor
• Springbrook Interceptor
LAKE WASHINGTON WEST BASIN
• West Renton Interceptor
• Tobin Street Interceptor
2-5
CHAPTER TWO
3. METRO CONNECTIONS
The Renton sanitary sewer system discharges wastewater to METRO sewer interceptors at 55
locations. The wastewater flow rates into each of these connections varies considerably,
depending on the area served by the collection system. The major METRO connections for each
subbasin are listed in TABLE II-2.
TABLE II-2: MAJOR METRO CONNECTIONS
SUBBASIN MANHOLE NO.
May Creek MH 3-4
Kennydale Lakefront MH 2-28
Kennydale MH 7-41
North Renton MH 12-202
West Renton MH 16-49
Renton Industrial(North) MH 20-57
Renton Industrial(South) MH 30-19
Panther Creek MH 26-56
Talbot Hill MH 21-26
South Renton MH 16-115
Tiffany Park MH 23-1
South Renton MH 12-205 --
Maplewood/Heather Downs MH 18-1
F. LIFT STATIONS
Sewage lift stations are used to convey wastewater from a low point to a higher point through
the use of a sewage pump and a pressurized force main. The City of Renton has 23 sewage lift
stations within its sanitary sewer system. The location of these lift stations is shown in FIGURE
3. The most common type is a wet well mounted lift station in which the mechanical and
electrical equipment are located above the ground surface and over a large manhole out of which
the wastewater is pumped. The second most common type is a wet well/dry well configuration
in which mechanical and electrical equipment are located underground in a sealed enclosure
adjacent to a large manhole from which the wastewater is pumped. Two other types of lift
stations include a submersible pump installation in which the sewage pumps are placed directly
in the wet well, and a pneumatic injector in which wastewater is conveyed through a force main
using pressurized air. The City has one each of these types of lift stations.
2-6
Overview of Existing Sewer System
Sewage lift stations are the most vulnerable element of a sewage collection system. Temporary
lift stations are constructed when it is too costly, at that time, to complete the gravity sewer
system; permanent lift stations are constructed when it is either physically impossible or
financially impractical to construct gravity sewers.
G. TELEMETRY AND CONTROL SYSTEM
Successful operation of any municipal sewer system requires that the municipality maintain a
comprehensive maintenance program and that they obtain accurate sewage flow rate information.
Although many additional operation and construction elements are necessary for a complete and
working system, maintenance and flow rate information are the keys to a successful operation.
A telemetry and control system is the means by which flow rates are measured and maintenance
needs are updated.
The City currently owns and operates an analog, signal-based alarm reporting system,
manufactured by Stead Baggerly of Bellevue,Washington,which monitors each lift station. The
system includes a master console, located in the City Shops, and a remote telemetry transmitter
located in each lift station.
H. OPERATION AND MAINTENANCE
The current operation and maintenance program for the sewer utility consists of four elements:
normal operations,emergency operations,preventive maintenance and staffing. Normal operation
of the sewer system is shared by the Engineering Division and the Operation and Maintenance
Division. The program is described and evaluated in more detail in Chapter 7.
I. DEFINITION OF TERMS
Building Drain - In plumbing, that part of the lowest horizontal piping within a
building that transports wastewater, or stormwater to a building
sewer.
Building Sewer - In plumbing, the extension from the building drain to the public
sewer or other place of disposal. Also called house connection or
side sewer (private).
Capacity Problems - When flow rates exceed what the facility is designed to convey.
Collector Sewer - A sewer that discharges into a main or trunk sewer and has no
other common sewer tributary to it, only building sewers.
2-7
i
CHAPTER TWO
Combined Sewer - A sewer intended to receive both wastewater and storm or surface
water.
Gravity Sewer Capacity - The maximum capacity for a gravity sewer is the volume of flow
that can be carried in a sewer at a depth to diameter ratio of 0.70
which is then used in.the Manning's equation.
Hydraulic Analysis - A computer simulation of a sewer system to determine if it can
adequately convey saturation, wastewater flow rates.
Infiltration - Infiltration is the entrance of groundwater into the sanitary sewer
system through cracks, pores, breaks, and defective joints in the
sewer piping network.
Inflow - Inflow refers to direct flow of stormwater into sanitary sewer
systems through hookups from stormwater collection facilities and
illegal connections.
Interceptor Sewer - A sewer that receives flow from a number of trunk sewers and
conducts such wastewater to a point for treatment or disposal.
Lift Station - A sewage pumping facility which consists of a wet well for
collecting wastewater;mechanical equipment such as pumps,valves
and piping; electrical and control equipment; and a force main.
Lift Station Capacity - The maximum capacity for a lift station is equal to the peak, wet
weather flow which the largest pump within the lift station has
been designed to convey.
Main or Trunk Sewer - The principal sewer to which collector sewers are tributary; also
called trunk sewer. A sewer that receives many collector branches
and serves a subbasin.
Municipality - For the purposes of this plan, municipality shall include cities,
water and sewer districts and METRO.
Outfall - The point, location, or structure where wastewater or drainage
discharges from a sewer, drain, or other conduit.
Planning Area - A geographic area as specifically defined on a map in a
comprehensive plan that is a logical area for expansion of the
2-8
Overview of Existing Sewer System
system. Conversion of a planning area to a service area requires
King County approval of an amendment to a comprehensive plan.
Public Works - The City of Renton's Planning/Building/Public Works Department.
Relief Sewer - 1) A sewer built to carry flows in excess of the capacity of an
existing sewer. 2) A sewer intended to carry a portion of the flow
from a basin in which the existing sewers are of insufficient
capacity, and thus prevents overtaxing them.
Sanitary Sewer - A sewer that carries liquid and waterborne wastes from residences,
commercial buildings, industrial plants, and institutions, together
with minor quantities of ground, storm, and surface waters that are
not admitted intentionally.
Saturation Condition - The point at which development is complete within a land use
designation. No further development is possible without a change
in the land use limitations.
Separated Sewer - A sewer intended to receive only wastewater or stormwater or
surface water.
Service Area - A geographic area within which service to customers is available
as specifically defined on a map in a comprehensive plan and
approved by King County.
Side Sewer - See building sewer.
Side Sewer Stub - The portion of the side sewer between the collector sewer and the
individual property line.
Storm Sewer - A sewer that caries stormwater and surface water, street wash and
other wash waters, or drainage, but excludes domestic wastewater
and industrial wastes. Also called storm drain.
Wastewater - The spent or used water of a community or industry which contains
dissolved and suspended contaminants which cannot be discharged
directly to a lake, stream or river.
Structural Analysis - A visual inspection, conducted by the human eye or by a video
camera, to determine if any physical weaknesses or problems exist.
2-9
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-
FIGURE 1
CITY OF RENTON
COMPREHENSIVE SEWER PLAN
EXISTING SEWER SYSTEM &
WASTEWATER COLLECTION BASINS
SCALE MARCH 24, 1992
SCALE: 1 " = 2000'
FILE: SWRCMP3
0 1000 2000 3000 4000
L.RH2 ENGINEERING, P.S.
NORTH SOUTH FIGURE 2
CITY OF RENTON
HYDRAULIC PROFILE RENTON SEWER SYSTEM COMPREHENSIVE EH NSIVE SEW R PLAN
476' SANITARY SEWER
HYDRAULIC PROFILE
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RH2 ENGINEERING, P.S.
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CHAPTER III
OPERATIoNAL POLICIES
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CHAPTER III
OPERATIONAL POLICIES
A. INTRODUCTION
The existing sewer system is designed and operated according to specific ordinances, regulations.
and engineering standards (hereafter collectively referred to as policies). All of the policies
originate from seven sources, listed in descending order, from those with the broadest authority
to those with the most narrow:
• Federal Regulations - Environmental Protection Agency
• State Regulations - Department of Ecology
• METRO Policies - Municipality of Metropolitan Seattle
• City of Renton Ordinances - City.Council
• Administrative Policies - Mayor
• Department Policies - Public Works Department
• Long-Range Wastewater Utility Policies - Wastewater Utility Staff
Federal regulations, state regulations, METRO policies, and City of Renton ordinances dictate
requirements that are set by law. Policies that originate in the Office of the Mayor, Public Works
Department, or Wastewater Utility cannot be less stringent or in conflict with those laws.
This chapter defines the long-range wastewater policies that will become the official policy of
the Wastewater Utility when the City Council adopts this plan. This chapter also summarizes
relevant federal, state and city ordinances and laws. Where these policies are further developed
in other chapters in this plan, the chapter number is indicated.
All of the policies guide the Wastewater Utility's daily operations as well as its planning .
activities. The policies overall goal is to provide adequate, reliable sanitary sewer service at a
minimum cost to the customer. This broad service goal consists of four more narrowly defined
goals:
1. Customer Service
2. Financial
3. Facilities
4. Organization
3-1
cl
4
TABLE III-1: CITY OF RENTON WASTEWATER UTILITY POLICY OUTLINE N3
CITY POLICY OUTLINE
• a
•
y
1 •II
t.,,, CUSTOMER SERVICE FINANCIAL FACILITIES ORGANIZATIONAL
N
1
ANNEXATIONS COST .OF. SERVICE DESIGN CRITERIA STRUCTURE
SERVICE INSIDE CITY RATES FOR OUTSIDE CITY MAINTENANCE LEVEL OF STAFFING
TEMPORARY SERVICE LID'S/LATECOMER'S RELIABILITY RESPONSIBILITIES
EMERGENCY SERVICE METRO CHARGES VULNERABILITY RELATIONSHIP WITH
PLANNING BOUNDARIES JOINT USE OTHER DEPARTMENTS
Operational Policies
TABLE III-1 illustrates the relationship among all four groups of policies.
B. WASTEWATER UTILITY POLICIES
The long-range wastewater policies are presented in their entirety below; the chapters in which
they are further developed are also indicated. City and state ordinances and laws are summarized
below; for their actual wording,please refer to the indicated sources. The policies presented here
will become the official policies of the Wastewater Utility when the City Council adopts this
plan. Consequently, they are presented in the traditional policy format rather than the outline
format that the other chapters follow.
1.0.0 CUSTOMER SERVICE GOAL: Ensure the availability of an adequate level of
sanitary sewer service which is consistent with land use, environmental protection,
and annexation goals and policies.
1.1.0 ANNEXATION OBJECTIVES: Ensure the availability of an adequate level of
sanitary sewer service to areas annexing to the City.
POLICIES:
1.1.1 (RCW 35A.14 and RCW 35.13A)
City annexation policies will not conflict with adopted state regulations and guidelines. The City
of Renton will follow state guidelines that define a City's ability to assume facilities in
annexation areas.
1.1.2 (RCW 35.13A.050)
Areas annexed without existing municipal sanitary sewer service shall be served by Renton unless
a service agreement exists or is negotiated with a neighboring utility.
1.1.3 (RCW 35.13A and Long-Range Wastewater Management Plan, Chapter 4)
Areas annexed with existing sanitary sewer service must meet the City's sanitary sewer service
objectives as defined in Section 1.2.0. Upgrading to City standards of sanitary sewer facilities
within all or portions of newly-annexed areas will be required if there is a threat to public health
and safety. If improvements are necessary, they may be accomplished by developer installation
or LID as a condition'of the annexation.
3-3
CHAPTER THREE
1.1.4 (City Code section 8-5-15C)
Request for individual sewer service outside of the city limits, without annexation, will be
evaluated by the City Council on a case-by-case basis. The Public Works Department will
establish design standards and criteria for the areas requesting service without annexation.
1.1.5 (City Code section 8-5-15C)
The City Council will consider and may allow sanitary sewer service to properties outside the
City's corporate limits when no other reasonable service is available and it is in the City's best
interest. Consideration will be given to the following factors:
a) The applicant is a municipal or quasi-municipal corporation, such as a school,
hospital or fire district, County of King, or similar public entity.
b) Service is necessary to convert from a failing or failed septic system, and the
property owner executes an agreement by which the owners,their heirs, successors
or assigns, agree and covenant to sign a petition to annex the property into the
City of Renton.
c) Service is necessary to protect the City's drinldng water supplies.
d) The property to be served is within a drainage basin where service can be
provided with gravity flow via the existing Renton sewer system; the property is
not within another sewer service district that has service available through existing
or gravity extension of existing facilities; and the property owner executes an
agreement by which the owners, their heirs, successors or assigns, agree and
covenant to sign a petition to annex the property into the City of Renton.
1.1.6 (1992 Long-Range Wastewater Management Plan, Chapter 4)
The City Council shall consider annexations without assumptions of existing sanitary sewer
facilities under the following conditions:
a) The sanitary sewer facilities are or will be operated and maintained by an adjacent
municipal utility; and
b) The adjacent utility has executed a service boundary agreement with the City; and
c) The annexation area is better served by the adjacent utility because either due to
a drainage basin or to the most logical extension of facilities.
3-4
Operational Policies
1.2.0 SANITARY SEWER SERVICE OBJECTIVE: Ensure and encourage the use of the
sanitary sewer system within urban areas in a manner consistent with land use and
environmental protection goals and policies.
POLICIES:
1.2.1 (1992 Long-Range Wastewater Management Plan, Chapter 3)
The City of Renton encourages all residents within the City to connect to public sewer.
1.2.2 (City Code sections 8-5-2C, 8-5-2D, and 8-5-3)
Private sewage disposal systems will be allowed within the City limits, subject to city, county,
and state regulations and when public sewers are not available.
1.2.3 (City Code section 8-5-3F)
The owners of private sewerage disposal systems shall operate and maintain the facilities in a
sanitary manner at all times at no expense to the City.
1.2.4 (City Code section 8-5-2D)
Properties that are within 330 feet of an existing gravity sewer line are required to connect if:
a) They are under new construction.
b) They have a failing septic system.
c) They are part of a sewer LID.
1.2.5 (Draft Aquifer Protection Area Ordinance)
Any new development (residential and non-residential) in Zone 1 of the Aquifer Protection Area
(APA) shall be required to connect to the City sewer system.
1.2.6 (Draft Aquifer Protection Area Ordinance)
Existing uovelopment (residential and non-residential) in Zone 1 of the APA that is within 330
feet of existing or future gravity sanitary sewer shall be required to connect to the City sewer
system within twelve (12) months of either the passage of the APA Ordinance or the availability
of the new sewer line.
3-5
CHAPTER THREE
1.2.7 (Draft Aquifer Protection Area Ordinance)
All new platted single-family, multi-family, and commercial developments in Zone 2 of the APA
shall be required to connect to the City sewer system. Construction of a single-family residence
on an existing platted lot shall be required to connect to the public sanitary system if the sewer
is within 330 feet of the property. Construction of a single-family residence on an existing
platted lot shall be allowed to use a septic system if gravity sanitary sewer is not available within
330 feet of the property,provided that connection to the sanitary sewer shall be completed within
twelve (12) months of the availability.of the sewer line.
1.2.8 (Draft Aquifer Protection Area Ordinance)
Existing development (residential and non-residential) in Zone 2 of the APA that is within 330
feet of existing or future gravity sanitary sewer shall be required to connect to the City sewer '-
system within twelve (12) months of either the passage of the APA Ordinance or the availability
of the new sewer line.
1.2.9 (City Code section 8-5-3E)
Properties that arewithin 330 feet of an existing sewer line that are not required to connect, and
whose owners choose not to connect, will be required to pay a penalty charge equal to the City's
monthly sewer charge.
1.2.10 (1992 Long-Range Wastewater Management Plan, Chapter 3)
The City, at the discretion of the Wastewater Utility, may defer compliance with non-health
related standards dealing with extension,design, or capacity for temporary sanitary sewer service.
Temporary sanitary sewer service may include pump tests, temporary discharge permits,
connections for temporary construction sights, or other similar usages.
1.2.11 (1992 Long-Range Wastewater Management Plan, Chapter 3)
The City, at the discretion of the City Council, may defer compliance with non-health related
standards dealing with extension, design, or capacity for emergency sanitary sewer service. The
property owner will retain the responsibility and will execute an agreement to either directly or
financially meet said standards at the direction of the City.
3-6
•
Operational Policies
1.2.12 (City Code section 8-5-3E)
After connection to the sewer system, all private sewage disposal facilities shall be abandoned
and filled with suitable material as defined by current Seattle-King County Health Department
regulations, or upon proper cleaning, may be used to dispose of stormwaters.
1.3.0 PLANNING OBJECTIVE: Establish the criteria necessary to plan a sewage
collection system that is consistent with the public health and water quality goals of
Washington State.
POLICIES:
1.3.1 (1992 Long-Range Wastewater Management Plan, Chapter 4)
For planning purposes, Wastewater Utility will use sanitary sewer service boundaries established
by agreement with adjacent municipalities. Where boundaries do not exist the Wastewater Utility
shall use natural basins to determine the ultimate service area.
1.3.2 (1992 Long-Range Wastewater Management Plan, Chapters 2, 5, and 6)
Facilities will be planned and sized to serve natural basins to minimize the need for pumping and
inter-basin transfers.
1.3.3 (1992 Long-Range Wastewater Management Plan, Chapters 4, 5, and 6)
Projected sewage flows from development will be calculated based on adopted land use plans and
policies. These projections will be used as a guide in developing the wastewater Capital
Improvement Program (CIP). If and when land use plans and policies are revised, the CIP will
be adjusted accordingly.
2.0.0 FINANCIAL GOAL: Provide sound financial policies on which to base operations
of the Wastewater Utility and that will allow the utility to meet its overall goals in
a manner that is most equitable to the citizens of the City.
2.1.0 COST OF SERVICE OBJECTIVE: Establish criteria for developing the fees and
rates necessary to maintain the Wastewater Utilities established level of service.
3-7
CHAPTER THREE
POLICIES:
2.1.0 The Wastewater Utility shall be operated as an enterprise utility (fmancially
self-supporting).
2.1.1 (1992 Long-Range Wastewater Management Plan, Chapter 8)
The Wastewater Utility will use a rate setting process that complies with standards established j
by the American Public Works Association.
2.1.2 (1992 Long-Range Wastewater Management Plan, Chapter 8)
The Wastewater Utility will use cost-based rates and additional charges that:
a) Recover current, historical, or future costs associated with the City of Renton's
sanitary sewer system and services.
b) Equitably charge utility customers to recover costs commensurate with the benefits
they receive.
c) Provide adequate and stable sources of funds to cover the current and projected
annual cash needs of the Wastewater Utility.
2.1.3 (City Code section 8-5-15F)
The existing customers of the Wastewater Utility shall pay the costs of operating and maintaining
the facilities through user rates. User rates include a portion of the debt service incurred to
finance the capital improvements and replacements of the utility facilities.
2.1.4 (City Code section 8-5-17B)
New customers seeking to connect to the sanitary sewer system shall be required to pay charges
for an equitable share of the cost of the system. Revenue from these charges is used to finance
part of the CIP.
2.1.5 (1992 Long-Range Wastewater Management Plan, Chapter 8)
Customers will be charged for supplemental, special purpose services through separate ancillary
charges based on the cost to provide the service. Ancillary charges create more equitable fees
and increase operating efficiency for services to customers. Revenue from ancillary charges will
be used to offset operations and maintenance costs.
3-8
Operational Policies
2.1.6 (1992 Long-Range Wastewater Management Plan, Chapters 2, 5, 7, and 8)
The utility will maintain information systems which provide sufficient financial and statistical
information to ensure conformance with rate-setting policies and objectives.
2.1.7 (1992 Long-Range Wastewater Management Plan, Chapter 8)
Rates shall be developed using the cash basis to determine the total revenue requirements of the
Wastewater Utility.
2.1.8 (1992 Long-Range Wastewater Management Plan,-Chapter 8)
User charges shall be sufficient to provide cash for the expenses of operating and maintaining
the Wastewater Utility. To ensure the fiscal and physical integrity of the Wastewater Utility, an
amount shall be set aside each year for capital expenditures from retained earnings, that is, an
amount shall be set aside to cover some portion of the depreciation of the physical plant. The
amount may be transferred from the Sanitary Sewer Fund to the Construction Fund for general
purposes, or for specific purposes, such as creating a reserve for main replacement.
2.1.9 (1992 Long-Range Wastewater Management Plan, Chapter 8)
A Working Capital Reserve will be maintained to cover emergencies, bad debts, and fluctuations
in cash flow.
2.1.10 (City Code section 8-5-4C)
The customer classes for the utility shall be single-family, multi-family, commercial, industrial,
governmental, and senior citizens.
2.1.11 (1992 Long-Range Wastewater Management Plan, Chapter 8)
The inflation rate will be based on information provided by the Finance Department.
2.1.12 (1992 Long-Range Wastewater Management Plan, Chapter 8)
The large industrial users will be charged for services on the same basis as all other users.
2.1.13 (1992 Long-Range Wastewater Management Plan, Chapter 8)
The utility will use generally accepted cost allocation principles for all cost allocation purposes.
•
3-9
CHAPTER THREE
2.1.14 (1992 Long-Range Wastewater Management Plan, Chapter 8)
The utility's fees and charges will,be calculated for the service area as a whole. Rates will be
the same regardless of service location (except for the inside. City/outside City distinction
discussed below).
2.1.15 (City Code section 8-5-15C)
For customers residing outside the City limits, sanitary sewer rates are 1.5 times the residential
City rates.
2.1.16 (City Code section 8-5-17B) -
Owners of properties that have not been assessed or charged an equitable share of the cost of the
sanitary sewer system shall pay, prior to connection to the system, one or more of four charges:
a) Utility connection charge
b) Special assessment charge
•
c) Latecomer's fees
d) Inspection/approval fees
2.1.17 (City Code section 8-5-15D)
A monthly fee, as levied by the Municipality of Metropolitan Seattle (METRO), shall be
collected from users by the City and passed on to METRO.
3.0.0 FACILITY GOAL: Provide a wastewater collection system that ensures adequate
capacity and system reliability, is consistent with land use and environmental
protectiongoals and policies, and is well maintained.
3.1.0 DESIGN OBJECTIVE: Set design criteria to be used to establish an optimum
performance level and a standard of quality for the sanitary sewer system.
3-10
Operational Policies
POLICIES:
3.1.1 (City Code section 8-5-19A)
Public sewers shall conform to the latest standards of the City of Renton, as adopted by City
Code and to the Recommended Standards for Sewage Works of the Great Lakes-Upper
Mississippi River Board of State Sanitary Engineers. The standards are subject to review by the
Department of Ecology of Washington State.
3.1.2 (City Code section 8-5-19B)
The public sewer shall be ductile iron American Water Works Association (AWWA) C 151, that
is with Type II push-on or Type III mechanical joints, together with cement mortar lining that,
is 3/32 of an inch in accordance with AWWA C 104, or polyvinyl chloride (PVC) plastic pipe
ASTM (American Society for Testing Methods) D 3034, or concrete non-reinforced ASTM C14
Class 2, or concrete reinforced ASTM C76. Rubber gaskets for concrete pipe shall meet ASTM
C443 standards. Rubber gaskets for PVC pipe shall meet ASTM 1869 standards. However,
public sewers installed in filled or unstable ground, in areas with high ground water levels, or
in areas where the potential for infiltration occurs, may be required to be either ductile iron, or
PVC plastic pipe. Exact pipe material shall be as determined by the Wastewater Utility.
Minimum size shall be 8 inches in diameter.
3.1.3 (City Code section 8-5-19C)
Manholes shall be installed at the end of each line, at all changes of grade, size or alignment, and
at distances no greater than 400 feet for 15 inch diameter sewers or smaller. Greater spacing
may be permitted in larger sewers. Manholes shall be a minimum of 48 inches in diameter, shall
be precast concrete or cast in place concrete, with steel reinforcement. Steps shall be placed at
1 foot intervals, conforming to current safety regulations.
The manhole covers shall be 24 inch diameter cast iron frame and lid. All
connections to the manhole shall match the existing inverts or have a drop connection in
accordance with standards.
3.1.4 (City Code section 8-5-19D)
All lift stations that will be converted to public maintenance and all private lift stations for
commercial or multi-family use shall have alarm and standby emergency operation systems, and
meet or exceed Department of Ecology specifications as detailed in Recommended Standards for
Sewage Works. All private single-family lift stations shall meet or exceed City standards for that
type of facility.
3-11
CHAPTER THREE
3.1.5 (City Code section 8-5-19E)
All public sewer extensions shall conform to City standards and be consistent with the City
Long-Range Wastewater Management.
3.1.6 (City Code sections 8-5-19E) ,
All person(s) or local improvement districts desiring to.extend sanitary sewer mains as part of
the City's system must extend said mains under the supervision of the Wastewater Utility. All
extensions shall extend and cross the full width of the property to be served by sewer except
when shown by engineering methods, to the satisfaction of the Wastewater Utility, that future
extension is not possible or necessary. If-an exemption is granted, the property owner is not
relieved of the responsibility 'to extend the main and shall execute a covenant agreeing to
participate in an extension if, in the future, the Wastewater Utility determines that it is necessary.
No property shall be served by City sewer unless the sewer main is extended to the extreme
boundary limit of said property as required by this section. All public sewer extensions shall
conform to the standards and be consistent with the City long-range wastewater management
plan.
3.1.7 (City Code sections 8-5-19E) '
Any facility improvements identified by the current adopted long-range wastewater management
plan that are not installed or are being installed must be constructed by the property owner(s) or
developer(s) desiring service.
3.1.8 (City Code sections 8-5-17B3)
Any party extending'utilities that may serve other than that party's property may request a
latecomers' agreement from the City (see City Code Title 9 Chapter 5 for methodology). Any
party required to oversize utilities may request that the utility participate in the cost of the
project.
3.1.9 (City Code section 8-5-11) 4
Grease and oil interceptors, or other approved methodology, shall be required on all restaurant,
and stationpremises and shall be so situated as to intercept the sources of
garage, gasp grease and
oil wastes but exclude domestic or human wastes. Grease, oil, and sandinterceptors shall be
provided in any other case if, in the opinion of the'Wastewater Utility, they are,necessary for the
proper handling of liquid wastes. All interceptors shall be of a type and capacity approved by '
the Wastewater Utility. '
3-12
Operational Policies
3.1.10 (1992 Long-Range Wastewater Management Plan, Chapters 4, 5, and 6)
Joint use facilities will be pursued only in those areas where they would improve reliability or
reduce operating costs. All joint use facilities must comply with City policy and design.
standards. Joint use facilities located within the City will be maintained by the City of Renton.
3.1.11 (City Code sections 8-5-7)
Old building sewers may be used in connection with new buildings only when, after examining
and testing them, the Wastewater Utility finds they meet all standards and specifications of the
City.
3.1.12 (City Code sections 8-5-6)
The size and slope of the building sewer shall be subject to the approval of the Wastewater
Utility. The standard minimum sizes and slopes are:
a) 4 inches at a 2 percent slope (1/4"per foot) for single-family or duplex residential.
b) 6 inches at a 2 percent slope (1/4" per foot) for multi-family, commercial, or
industrial.
In no event shall the diameter of the side sewer stub be less than 6 inches. The Wastewater
Utility may allow, under certain circumstances, a 6 inch side sewer to be laid at no less then 1
percent (1/8" per foot). A grade release holding the City harmless for the flatter slope will be
required.
3.1.13 (City Code sections 8-5-6)
If a building cannot be served by a gravity systems an approved, private lift station may be
utilized to provide service.
3.2.0 MAINTENANCE OBJECTIVE: Maintain the sanitary sewer system in a safe,
reliable, and efficient operating condition.
POLICIES:
3.2.1 (1992 Long-Range Wastewater Management Plan, Chapter 7)
The City will maintain its wastewater collection system according to the following guidelines:
3-13
CHAPTER THREE
a) Maintenance shall be performed by the sanitary sewer maintenance staff and
supervised by the Field Superintendent.
b) All maintenance personnel shall be trained in the procedures and techniques
necessary to efficiently perform their job descriptions.
c) Dry, heated shop space shall be available to all maintenance personnel.
d) Tools shall be obtained and maintained to repair all items whose failure will
impact the ability to meet other policy standards.
e) Spare parts shall be stocked for all equipment items whose failure will impact
either the ability to meet other policy standards or the inability to continue
providing service to customers.
3.2.2 (1992 Long-Range Wastewater Management Plan, Chapter 7)
The City will provide a preventive maintenance schedule for all facilities and equipment. This
schedule will be based on the functional and economically useful life of the equipment and
facilities as determined by the manufacturer or industry experience.
a) Worn parts should be repaired, replaced, or rebuilt before they have a high
probability, for failure.
b) Equipment should be replaced before it becomes obsolete. -
3.2.3 (1992 Long-Range Wastewater Management Plan, Chapter 7)
The City will maintain the wastewater collection system in a timely manner that provides service
continuity to the customer:
a) Equipment breakdown repairs will be made even if overtime labor is involved.
b) Equipment that is taken out of service for maintenance will be returned to service
as soon as possible.
3.2.4 (1992 Long-Range Wastewater Management Plan, Chapters 2, 5, and 7)
Written records and reports will be maintained on each facility and item of equipment showing
its operation and maintenance history.
3-14
Operational Policies
3.2.5 (City Code section 8-5-11)
Restaurants and other food processing establishments, garages and gas stations shall install and
maintain grease traps, grease and oil interceptors, or other approved methodology on their
premises as determined by the Wastewater Utility.
3.2.6 (1992 Long-Range Wastewater Management Plan, Chapter 3)
The property owner is responsible for and shall maintain side sewer stubs (that portion of the side
sewer within the right-of-way or easement). If a side sewer becomes plugged, it is the property
owner's responsibility to correct the problem. The City will assist in locating the side sewer
based on any as-built records it has. If it is determined that the problem exists within the City
sewer main, the City will provide professional clean-up and repair service.
3.2.7 (1992 Long-Range Wastewater Management Plan, Chapter 5)
A vulnerability analysis will be performed to determine a reasonable "worst case" failure for each
basin. The analysis will consider the failure of the interceptor and trunk sewers, failure of the
largest mechanical component, and power failure to a single power grid.
4.0.0 ORGANIZATIONAL GOAL: Provide the organizational structure and staff
necessary to operate the City of Renton's Wastewater Utility system.
4.1.0 ORGANIZATIONAL STRUCTURE OBJECTIVE: Provide an organizational
structure that allows for the efficient operation of the City's wastewater utility
system.
POLICIES:
The Wastewater Utility is responsible for operating the sanitary sewer system, including its
planning, design, operations and maintenance, records management, customer service and
construction management.
4.1.1 (1992 Long-Range Wastewater Management Plan, Chapter 7)
The Wastewater Utility shall operate the sanitary sewer system. The storm water, and water
systems are managed by other utilities within the Public Works Department.
4.1.2 (1992 Long-Range Wastewater Management Plan, Chapter 7)
The Wastewater Utility shall be managed by the Public Works Department administrator.
3-15
CHAPTER THREE
4.1.3 (1992 Long-Range Wastewater Management Plan, Chapter 7)
The Wastewater Utility shall consist of two divisions: planning/design and
operations/maintenance. The planning/design division is responsible for project management of
CIP projects, planning and design, and customer service. The operations/maintenance division
is responsible for inspection,testing and repair of facilities,routine preventative maintenance,and
responding to emergencies.
4.1.4 (1992 Long-Range Wastewater Management Plan, Chapter 7)
Wastewater Utility customer service is performed by the Public Works Customer Service
Division (general) and by the Wastewater Utility staff (technical).
4.2.0 STAFFING OBJECTIVE: Provide the levels of staffing and diversity of skills
necessary to operate the City's wastewater utility system.
4.2.1 (1992 Long-Range Wastewater Management Plan, Chapter 7)
The City Council establishes the staff levels of the Wastewater Utility, which is based on the
utility requirements and financial resources of the City.
4.2.2 (1992 Long-Range Wastewater Management Plan, Chapter 7)
Personnel will be certified according to state standards, including the certification of the Utility
Engineer and the Maintenance Supervisor.
4.2.3 (1992 Long-Range Wastewater Management Plan, Chapter 7)
The City will support staff training.
4.3.0 DEPARTMENTAL COORDINATION OBJECTIVE: The Wastewater Utility will
utilize the expertise in other City departments,.according to inter-departmental
agreements, to augment the Wastewater Utility's expertise.
•
4.3.1 (1992 Long-Range Wastewater Management Plan, Chapter 3)
The City of Renton's Finance Department is responsible for customer billing,payment collection,
project cost reporting and fund activity reporting.
3-16
Operational Policies
4.3.2 (1992 Long-Range Wastewater Management Plan, Chapter 3)
The Personnel Department is responsible for employee records, union labor negotiations, and
salary schedules.
3-17
a
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CHAPTER IV
LAND USE POLICIES, ADJACENT SYSTEMS & DESIGN CRITERIA
A. INTRODUCTION
This chapter describes the City of Renton's land use policies, adjacent utilities, and the sewer
system's design criteria. It then describes how land use policies and design criteria were used
to develop saturation flow rates that were the basis for a hydraulic computer analysis of the
existing system.
The City of Renton's land use policies and its sewer system are connected with adjacent sewer
systems' policies and systems in several ways. Existing land use provides the basis for designing
properly sized sewerage facilities, including trunks, interceptors, and lift stations. In most cases
Renton's sewers are downstream, or at the receiving end of the effluent, from the systems
adjacent to the City. Most of the basins served in part by the City are also served in part by
other cities or districts. Therefore, proper planning for Renton's sewers requires that the plans
of these adjacent utilities be evaluated.
B. STUDY AREA
As described in Chapter 2 the City of Renton serves six drainage basins, which are: 1) May
Creek, 2) Lower Cedar River, 3) Lake Washington East, 4) Black River, 5) Lake Washington
West, and 6) Duwamish Estuary. Except for Lake Washington East, all of these basins are also
served in part by another sewer.agency. The extent of these basins is shown on FIGURE 1.
May Creek Basin is partially served by King County Water and Sewer District No. 107. Service
within the lower Cedar River Basin is also provided by Cedar River Water and Sewer District
and Soos Creek Water and Sewer District. In addition to Renton, the City of Tukwila, City of
Kent, and Soos Creek Water and Sewer District also provide service within the Black River
Basin. Both Renton and the City of Tukwila provide service within the Duwamish Estuary.
Parts of the Lake Washington West Basin are served by Bryn Mawr/Lakeridge Water and Sewer
District and Skyway Water and Sewer District.
The study area (planning area), shown in FIGURE 5, for this Long-Range Wastewater
Management Plan was developed using a variety of criteria. Because many of the adjacent
utilities have sanitary sewer facilities that border the Renton city limits, the study area for the
most part, corresponds with the current city limits. Deviations from this norm did occur in the
following areas:
• Since Water District 90 does not currently provide sanitary sewer service within
its service area, a considerable amount of annexation pressure exists in this area. —
-
Therefore, the study area was extended into the service area of Water District 90
out to the East Maplewood subbasin limits.
4-1
CHAPTER FOUR
• The City of Renton is currently negotiating with Soos Creek Water and Sewer
District to revise the service area boundary along their common border. For this
reason, the study area included the tentatively agreed upon service area boundary.
• Natural boundaries in certain areas make the City of Renton the logical sanitary
sewer provider to them. The study area includes the following areas of this kind:
• The area lying south of May Creek within King County Water
District 107.
• The area to the east of the Green River within the City of Tukwila.
• The area within the southern portion of the Skyway Water and
Sewer District.
C. LAND USE
1. CITY OF RENTON
Development in the service area (the area in which the City currently provides sewer service)
must be in compliance with the City's Long-Range Wastewater Management Plan and policies,
which represent a long-range plan for growth and physical development of the City. The current
character of the City reflects the original Comprehensive Land Use Plan which was adopted in
1965 and revised in 1968. Under this plan, industrial and commercial development was directed
toward the Central and Green River Valley areas to allow for further expansion of the City's
business center. Residential growth under the plan was primarily directed toward the eastern
areas such as the Highlands and Talbot Hill areas of the City, since the West Hill was already
developed primarily with residences. A summary of the land use that resulted from this plan is
presented in FIGURE 6.
Review and updating of the Comprehensive Land Use Plan was initiated in 1975 to incorporate
changes made in the economic,legislative,and land use philosophy of the City since the adoption
of the original plan. To accomplish this updating, the original plan was divided into four
planning areas: the Northeast Planning Area, the Southeast Planning Area, the Central Planning
Area, and the Green River Valley Planning Area. Existing and proposed land use for each area
was examined,revisions were proposed and hearings were held,with fmal revisions incorporated
into the Revised Comprehensive Land Use Plan. Since 1975 all four Planning Areas have been
examined, and Land Use Plans have been revised and adopted for each planning area. Since
1989 the City has been in the process of revising and updating the overall Comprehensive Plan,
a process that will not be completed in time for inclusion in this document.
4-2
Land Use Policies/Adjacent Systems/Design Criteria
Planned land use within the service area is based on the following City policy. Section 3.A of
the Comprehensive Land Use Plan recommends maximizing the use of available utility and
service resources in existing areas prior to allowing development of outlying areas. This policy
section provides the framework for current land use development and is stated in TABLE IV-1.
TABLE IV-1: SECTION 3.A OF THE COMPREHENSIVE LAND USE PLAN
3.A. LAND DEVELOPMENT OBJECTIVE: Growth and development should
occur in a timely and logical progression of the existing urban area to maximize
the use of existing services. _
POLICIES:
1. To minimize the necessity for redevelopment, premature development should
only be allowed where it can be shown to be compatible with future use in the
vicinity.
2. Development beyond the urban fringe should only be allowed
where it is a consistent extension of urban services.
3. Vacant land surrounded by developed land should be given
priority for development.
4. Land where adequate public utilities are available should be
given priority for development.
5. A balance of residential, commercial, and industrial areas
should be encouraged.
6. The upgrading and/or redevelopment of marginal areas should
be encouraged.
7. The City should identify its sphere of influence.
8. Annexations should have logical boundaries.
9. To reduce processing time and effort and provide for efficient
use of existing public facilities, large annexations should be
encouraged.
10. Annexations that are economically advantageous should be
encouraged.
11. Development requirements should be definite and reasonable.
4-3
CHAPTER FOUR
The following objectives of the Comprehensive Land Use Plan are based on the policy statements
in TABLE IV-1.
• To manage growth and physical development in the City and surrounding
unincorporated areas.
• To encourage growth in existing areas where the patterns of development are
already largely set.
• To direct expansion of residential, commercial, and industrial developments into
areas where land, utilities, access, and community facilities are available with the
capacity to accommodate the projected growth.
• Allow higher dwelling densities in areas capable of supporting a higher level of
development and lowering densities in areas where facilities are limited.
The existing land uses within the City have been classified into a variety of categories for the
purposes of planning and mapping. The categories used are listed in TABLE IV-2 and the
corresponding number of acres in each land use category is listed in TABLE IV-3. A summary
of the information in TABLE IV-4 is shown in graph form in FIGURE 4.
TABLE IV-2: COMPREHENSIVE LAND USE CATEGORIES
Land Use Category Domestic Wastewater Equivalent Dwelling Units(EDU's)
Single-Family Residential 1,152 GPAD 6 EDU's/Acre
Low-Density Multi-Family Residential 2,112 GPAD 12 EDU's/Acre
Medium-Density Multi-Family Residential . 3,168 GPAD 18 EDU's/Acre
High-Density Multi-Family Residential 4,224 GPAD 24 EDU's/Acre
Public/Quasi Public 600 GPAD 3 EDU's/Acre
Extractive Industrial 2,800 GPAD 14.5 EDU's/Acre
Light Industrial 2,800 GPAD 14.5 EDU's/Acre
Heavy Industrial 2,800 GPAD 14.5 EDU's/Acre
Parks and Recreation 300 GPAD 1.5 EDU's/Acre
Right-of-Way 0 GPAD 0 EDU's/Acre
Greenbelt 0 GPAD 0 EDU's/Acre
4-4
Land Use Policies/Adjacent Systems/Design Criteria
TABLE IV-3: EXISTING LAND USE FOR THE CITY OF RENTON(1989)
AREA DOMESTIC INFILTRATION TOTAL
LAND USE [ACRE] FLOWS[GPM] &INFLOW[GPM] FLOWS[GPM]
RESIDENTIAL
Single Family 2069 1669 1868 3537
Multiple Family 326 723 294 1017
Mobile Home Park 103 83 93 176
COMMERCIAL
Neighborhood Commercial 3 6 3 9
General Commercial 238 463 215 678
Community Commercial 256 498 231 729
Recreational Commercial 190 369 172 541
INDUSTRIAL -
Office Park 166 323 150 473
Light Industry 180 350 163 513
Heavy Industry 551 1071 497 1568
Manufacturing 616 1198 556 1754
PUBLIC
Community Utility 153 0 138 138
Schools 223 93 201 294
Hospitals 34 14 31 45
Parks 481 200 434 634
Civic/Community Centers 207 86 187 273
OPEN SPACE
Open Space 51 0 46 46
Freeways/Arterials/Streets , 2039 0 1841 1841
VACANT LAND 2294 2636 2071 4707
TOTALS 10,180 Acres 9,782 GPM 9,191 GPM 18,973 GPM
TABLE IV-4: VACANT LAND BY ZONING DESIGNATION FOR THE CITY OF RENTON(1989)
AREA DOMESTIC INFILTRATION TOTAL
LAND USE [ACRE] FLOWS[GPM] &INFLOW[GPM] FLOWS[GPM]
SINGLE FAMILY
G-1 Single Family 946 763 854 1617
R-1 Single Family 452 365 408 773
MULTI-FAMILY
R-2 Duplex 18 27 17 44
R-3 Multiple Family 28 62 25 87
R-4 Multiple Family 59 175 53 228
COMMERCIAL
B-1 Business Use 64 124 58 182
INDUSTRIAL
M-P Manufacturing 335 651 302 953
L-1 Light Industrial 8 16 8 24
0-P Office Park 192 373 173 546
PUBLIC
P-1 Public Use 192 80 173 253
TOTALS 2294 Acres 2636 GPM 2071 GPM 4707 GPM
4-5
i
CHAPTER FOUR
TOTAL
AND LANDWASTEWATER USE ACREAGEFLOW ,
FIGURE 4
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4707
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................. Acma e
0
Residential Commercial Industrial Public ( Open Space Vacant Land
LAND USE CATEGORIES
4-6
Land Use Policies/Adjacent Systems/Design Criteria
The existing land use pattern of the City of Renton reflects 100 years of settlement and
expansion. The original City was settled in the broad floodplain at the confluence of the Cedar
and Black Rivers along the shore of Lake Washington. This area continues to be the heart of
Renton; its industrial uses, the airport along Lake Washington and the Central Business District
at the foot of Renton Hills are interspersed with older, single-family housing and small apartment
complexes.
Residential areas were the hills and plateaus surrounding the core area originally developed in
the county and annexed to the City. Single-family residential neighborhoods are concentrated
in the Highlands, Kennydale Hill, West Hill, Earlington Hill, Talbot Hill, and the ridges along
Maple Valley.
Along the edges of the single-family neighborhoods and the transportation corridors are
concentrations of multi-family housing. Significant concentrations exist along NE 4th Street,NE
Sunset Boulevard, SW Sunset Boulevard, and Benson Road So.
In addition to the central business district, commercial areas are concentrated along the major
arterials and freeway exchanges, including Rainier Avenue, Grady Way, Sunset Highway,
Bronson Avenue, NE 4th Street, the NE 44th Street exit, and SW 43rd Street.
The Green River Valley was annexed to Renton in the late 1950s with the intention of developing
a second industrial base. This area, which was originally the northern end of a long farming belt
along the Green River, now includes a few residual houses and a significant concentration of
manufacturing, warehousing, and office park development. A hub of commercial services is
located in the southeast corner of the City limits.
Valley Medical Center dominates the land uses along the southern portion of Talbot Hill.
Surrounding the hospital is a concentration of support facilities, including medical and dental
offices and laboratories.
Parks in the Renton area tend to be located along river channels and lake shores. Many parks
are located along the Cedar River, including: Liberty Park, Maplewood Golf Course, Cedar
River Park, Jones Park, and the Cedar River Trail. Gene Coulon Memorial Beach Park and
Kennydale Beach Park are situated directly on the shore of Lake Washington.
The City is currently bounded in the south and west by Kent and Tukwila, and to the north by
Lake Washington. Future land use is primarily a function of the location of existing vacant land
within the City and the rezoning of existing designations. The zoning designations for the vacant
land within the City are listed in TABLE IV-4.
4-7
CHAPTER FOUR
2. AQUIFER PROTECTION ORDNANCE
The City of Renton drafted an Aquifer Protection Ordinance to protect its water supply from
being contaminated, which is scheduled to be adopted in 1992. Once the ordinance is adopted,
it will regulate land use within two specified zones in order to protect the aquifer from
contamination. Although the City has not yet adopted the ordinance, it has adopted an aquifer
protection area (APA), which is that area within the zone of capture for the City's aquifers and
spring. The APA is divided into two zones. Zone 1 is that area in which contamination would
reach the aquifer within a year. Zone 2 is that defined as the remaining area within the APA that
is within capture area for the City's water supply wells.
Land use in Zone 1 will be more strictly regulated than in Zone 2. All new development within
Zones 1 must connect to the sewer system. Existing development must connect if it is within
330 feet of a sewer line. In Zone 2, all new platted single-family, multi-family and commercial
development must connect to the sewer system. However, a single-family residence is required
to connect only if it is within 330 feet of a sewer line. Existing development in Zone 2 that is
within 330 feet of a sewer line must connect to the sewer system within either 12 months of the
ordinance passing, or the availability of a new sewer line. A more detailed description of the
proposed aquifer protection policies can be found in Chapter 3.
3. UNINCORPORATED KING COUNTY
Land use within the unincorporated portions of the study area is controlled by the 1985 King
County Comprehensive Plan. All of the study area in unincorporated King County is designated
"urban." Urban areas are those areas where most new housing and jobs will be located and
where most public spending for facilities, services, and open space is normally focused.
Comprehensive Plan Policies R-201 and R-202 establish a goal of achieving an average density
of seven to eight dwelling units per acre within the urban area. Such an overall density goal
cannot be achieved without providing sanitary sewer service to residential development.
King County is divided into smaller planning areas called Community Planning Areas. Two
community plans, Newcastle and Soos Creek, cover most of the unincorporated areas within the
study area of this Plan. The Soos Creek Community Plan was adopted in November 1979 and
is currently in the process of being updated. According to County staff, it is expected that a
revised Soos Creek Community Plan will be forwarded to the King County Council for review
and adoption in 1991. The Newcastle Community Plan was adopted in 1983. The update
process for the Newcastle Community Plan has not been scheduled.
4-8
Land Use Policies/Adjacent Systems/Design Criteria
4. ANNEXATION
When areas outside of the city limits annex to the City, they must be provided with an adequate
level of sewer service. Annexed areas that do not have sewer service will be served by the City
of Renton unless another utility has agreed to serve the area. Annexed areas with existing
sanitary sewer service must meet the City's sanitary sewer service objectives as they are defined
in Section 1.2.0 in Chapter 3. However, upgrading sanitary sewer facilities to all City sanitary
sewer standards will be required only if there is a threat to public health and safety. As a
condition of the annexation, improvements may be required, which can be constructed by
developer installation or Local Improvement District (LID). A more detailed description of the
City's annexation policies can be found in Chapter 3.
5. SPHERE OF INFLUENCE
The City of Renton has entered into an interlocal agreement with the Cities of Bellevue and
Issaquah to establish sphere of influence lines. This agreement was signed by the three
jurisdictions in 1979. The sphere of influence agreement places responsibility for long-range
planning with the City of Renton within its sphere of influence
6. ADJACENT UTILITY SYSTEMS/JOINT USE AND SERVICE AGREEMENTS
The City has entered into several joint use and service agreements with neighboring districts and
private customers when it has been economically beneficial. A list and a summary of these joint
use and service agreements is presented below. The full text for each of these agreements is
presented in Appendix B.
•
• The Tiffany Park Interceptor Joint Use Agreement with the Soos Creek Water and Sewer
District.
• Apollo School Lift Station Service Agreement with King County Water District 90.
• Earlington Elementary School Service Agreement.
• King County Water District No. 107 Utility Franchise Agreement.
• King County Water District No. 107 Joint Use Agreement.
• King County Sewer and Drainage District No. 4 Agreement.
• City of Kent Agreement.
• Cascade Sewer District Service Boundary Agreement.
• Bellevue/Issaquah/Renton Sphere of Influence Agreement
The City is surrounded by eight adjoining utility entities, seven of which provide sanitary sewer
services. These eight utility entities are shown on FIGURE 7. It is evident that some sewer
franchise boundaries overlap with the City limits. These areas are also shown in FIGURE 7.
4-9
CHAPTER FOUR
The study area for the City's Long-Range Wastewater Management Plan is shown on FIGURE
5. It includes parts of drainage basins within adjoining utility entities. Areas which may be
considered for service boundary adjustments are also shown in FIGURE 5.
a. KING COUNTY WATER DISTRICT NO. 107
King County Water District No. 107 provides sewer service in part of the May Creek
Basin. The District adopted a Comprehensive Sewer Plan in 1988. Its plan for serving
May Creek Basin includes diverting approximately 1,000 acres from the May Creek Basin
to the Coal Creek Basin on an interim basis. This plan is based upon two assumptions:
first, that it would be too difficult and expensive to construct a May Valley Interceptor
at this time, and second, that the City of Renton's service in the southern part of the
Basin is adequately provided by the Honey Creek Interceptor. In order to accomplish this
diversion, the District is proposing to construct three lift stations and to complete a Coal
Creek Interceptor Improvement Project.
The sewer franchise boundary for King County Water District No. 107 is shown on
FIGURE 7. Two small service area overlaps occur because the City annexed part of the
District, but the District has not yet redrawn its boundaries.
The District and the City have entered into joint use agreements in the past in order to
provide for the construction of sanitary sewer facilities. Joint use agreements will
continue to be needed as the May Creek Basin develops. The existing service area gap
which is located south of May Creek and east of Honey Creek may best be served by the
City. This service area gap is shown on FIGURE 5.
b. KING COUNTY WATER DISTRICT NO. 90
King County Water District No. 90 does not currently provide sanitary sewer service.
However, the District does have a sewer franchise boundary which is shown on FIGURE
7. The District had a Comprehensive Sewer Plan prepared in 1970, but has not proceeded
with the formation of a sewer district due to opposition from the community.
Since the District is reluctant to provide sewer service within its franchise boundaries, the
City is experiencing annexation pressures from property owners adjacent to the City
limits. These annexation requests are for the purpose of obtaining sewer service. For
this reason and due to natural drainage patterns, the study area shown on FIGURE 5
extends outside the current City limits.
4-10
Land Use Policies/Adjacent Systems/Design Criteria
c. CEDAR RIVER WATER AND SEWER DISTRICT
Cedar River Water and Sewer District provides service to parts of the Lower Cedar River
Basin. However, only a small fraction of the wastewater from Cedar River Water and
Sewer District ultimately flows through the City of Renton's system by flowing through _
the Soos Creek Water and Sewer District. The majority of sewage from Cedar River
Water and Sewer District flows directly into METRO's Cedar River Interceptor located
along the Maple Valley Highway. The District's last Comprehensive Sewer Plan was
adopted in 1983. According to the District's engineer, a revised Sewer Plan for Cedar
River Water and Sewer District is expected in 1991.
The sewer franchise boundary for Cedar River Water and Sewer District is shown on
FIGURE 7. A service area overlap occurs as a result of the City's recent annexation of
the park area located east of the Maplewood Golf Course. Currently, no sewage facilities
are required; the City will provide these services.
The Wasmeta Park area is a service area gap between the City and the District. Currently
no sanitary sewer facilities exist within this area., If sewer service is needed or required,
the City should provide it because it is on the north side of the Cedar River, and the
remaining service area of the Cedar River Water and Sewer District is on the south side.
d. SOOS CREEK WATER AND SEWER DISTRICT
Soos Creek Water and Sewer District adopted a Comprehensive Plan in 1987. The plan
acknowledges several service area overlaps with the City of Renton. The District also
proposes providing sewer service within portions of the Black River Basin within the City
of Renton.
Renton has an agreement with Soos Creek Water and Sewer District for joint use of a
sewer interceptor in the Tiffany Park Subbasin, and for joint use of the Springbrook
Interceptor,located on So. 192nd Street. The Springbrook Interceptor will provide service
to the southernmost portions of the City of Renton.
The sewer franchise boundary for Soos Creek Water and Sewer District is shown on
FIGURE 7. Several service area overlaps occur because the City and the District are
currently negotiating revisions to the service area boundaries between them. These
proposed revisions are shown on FIGURE 5. This agreement proposes that the City
serve some areas outside the City limits, and that the District serve some areas inside the
City limits.
4-11
i {
CHAPTER FOUR
e. CITY OF KENT
SW 43rd Street is the principal dividing line between the cities of Renton and Kent.
Renton has an agreement with Kent to serve a small area south of SW 43rd Street east
of 72nd Avenue So. and west of the Puget Sound Electric Railway right-of-way. The
City of Kent Comprehensive Sewer Plan was adopted in 1980. The. Renton and Kent
City limits adjoin each other as shown on FIGURE 7, and there are no service area
overlaps or gaps between the two entities, except for that one small area.
f. CITY OF TUKWILA
A portion of the City of Tukwila east of the Burlington Northern Railroad and south of
Longacres is served by the City of Renton. Tukwila also discharges from a lift station
into the METRO Sewer System within the City of Renton along SW 10th Street.
Tukwila prepared a Comprehensive Sewer Plan in 1984. This Plan shows the extension
of sanitary sewer service by the City of Tukwila into the City of Renton in the vicinity
of Longview Avenue So. and SW 33rd, ultimately connecting into the existing Renton
system along the railroad right-of-way. The 1984 Tukwila Plan also shows relocating two
sewer mains north of I-405 in the vicinity of 72nd Avenue So. and SW 10th Street within
the City of Renton in order to eliminate a pump station within the City of Tukwila.
The Renton and Tukwila City limits adjoin each other as shown on FIGURE 7.
However, a natural service area boundary between the two entities is the Green River,
which might be considered for a service area adjustment as shown on FIGURE 5.
g. SKYWAY WATER AND SEWER DISTRICT
A copy of the 1984 Comprehensive Sewer Plan for Skyway Water and Sewer District was
obtained from the District's engineer. The Plan appears to be a compilation of previous
plans that were done for King County and the predecessor to Skyway Water and Sewer
District. It appears, however, that no facilities within the Skyway service area directly
discharge to, or would affect, facilities within the Renton sewer system.
The Skyway Water and Sewer District does not have a sewer franchise boundary
according to records provided by King County. However, the franchise boundary may
still be under the former King County Sewer and Drainage District No. 4. The service
area from the District's Comprehensive Sewer Plan is shown on FIGURE 7.
Approximately 60 percent of the District is served with sanitary sewer facilities. A large
area within the District, as well as in the service area gap to the south of the District,
could be served by gravity to the Renton sanitary sewer system. This area is shown on
FIGURE 5.
4-12
Land Use Policies/Adjacent Systems/Design Criteria
h. BRYN MAWR-LAKERIDGE WATER AND SEWER DISTRICT
According to maps provided by the District, Bryn Mawr-Lakeridge Water and Sewer
District serves a small area of Renton along Rainier Avenue near So. 117th Place.
Sewage from Bryn Mawr/Lakeridge discharges into the METRO System within the City
of Renton at the north end of the Renton Airport.
The sewer franchise boundary for Bryn Mawr-Lakeridge Water and Sewer District is
shown on FIGURE 7. The eastern part of the District could be served by gravity to the
Renton system. This area is shown on FIGURE 5. However,unless this area is annexed
to the City, there is no advantage to this service area transfer.
D. ANALYSIS AND DESIGN CRITERIA
This section presents the design criteria for sanitary sewage collection system analysis and design.
Analysis is necessary to determine the adequacy of the existing system and to identify needs for
future facilities. The analysis and design criteria are based on "Criteria For Sewerage Works
Design" prepared by the Washington State Department of Ecology, the Municipality of
Metropolitan of Seattle (METRO), the City of Renton Standards, actual water usage records, and
other accepted engineering criteria and standards for sanitary sewer design and construction.
1. WASTEWATER FLOW RATES - DEFINITION
Wastewater in the service area is generated by the population and by non-residential users within
it. The Renton Comprehensive Land Use Plan identifies eleven, separate land use categories.
For sanitary sewer planning purposes,these eleven categories were used to determine wastewater
flow rates for the hydraulic computer model. The eleven land use categories are listed in
TABLE IV-3.
Eleven saturation land use populations were determined by calculating the areas of each
designated land use category. This was accomplished by assigning land use designations to all
parcels within a land use boundary on a computer base map that was used for producing the
figures for this plan. Saturation was defined as the point at which development is complete
within a land use designation.
2. WASTEWATER FLOW CRITERIA
Wastewater flows can be divided into four major components, which are 1) domestic wastes, 2)
industrial wastewater, 3) infiltration, and 4) inflow. The wastewater flow criteria used for each
or these four components is presented in TABLE IV-5.
4-13
CHAPTER FOUR
a. DOMESTIC WASTEWATER
Domestic wastewater flows are essentially equal to winter-time water consumption and
are typically established on a per capita basis. The average domestic wastewater flow
used for analysis and design of the sanitary sewer system is 80 gallons per day per
person.
b. COMMERCIAL/INDUSTRIAL WASTEWATER
Commercial and industrial wastewater is defined as the wastewater generated from a
specific commercial or industrial operation. Commercial and industrial wastewater does
not include waste generated by employees of the industry, which is considered domestic
waste and excluded from this category.
c. INFILTRATION
Infiltration is the entrance of groundwater into the sanitary sewer system through cracks,
pores, breaks, and defective joints in the sewer piping network. Additional infiltration
also results from the entrance of storm- water through manhole covers. The quantity of
water that may infiltrate into a sanitary sewer system depends upon many variables, such
as the age of the system, materials used in construction, and the service area's hydrology,
soils and groundwater level. However, the design of the sewer system, including mains,
laterals, and individual connections, along with inspection during construction, will have
substantial impact on the quantity of infiltration.
Due to improvements in construction materials and practices, systems installed after 1960
generally show a decrease in the quantity of groundwater infiltration. The use of non-
porous piping materials and rubber-gasketed type joints will help reduce infiltration and
will improve the condition and life of the sanitary sewer system. The design allowance
for infiltration is shown in TABLE IV-5.
d. INFLOW
Inflow refers to direct flows of stormwater into sanitary sewer systems through hookups
from stormwater collection facilities and illegal connections. Stormwater inflow is due
mainly to unauthorized connections to the sanitary sewer system. The enforcement of
regulations banning the illegal connections to the sanitary sewer system along with
continued efforts to identify and correct previously unauthorized connections minimize
stormwater inflow. The design allowance for stormwater inflow is shown in TABLE IV-
5.
4-14
Land Use Policies/Adjacent Systems/Design Criteria
TABLE IV-5: WASTEWATER FLOW CRITERIA
Average Domestic Sewage Flow: 80 gals/day/person
Average Population Density 2.40 person/dwelling unit single-family
(U.S Census Bureau, 1980): 2.20 person/dwelling unit multi-family
Residential Density:
Single-Family Residential - 6 dwelling units/acre
Low-Density, Multi-Family
Residential 12 dwelling units/acre
Medium-Density,Multi-
Family Residential 18 dwelling units/acre
High-Density,Multi-
Family Residential 24 dwelling units/acre
Commercial and Industrial Sewage Flows':
Light Industrial 2800 gals/acre/day(gpad)
Heavy Industrial site specific
Commercial 2800 gpad
Office 2800 gpad
Recreation 300 gpad
Green Belt 0 gpad
Public 600 gpad
Manufacturing Park 2800 gpad
Infiltration and Inflow (METRO):
Peak Infiltration 700 gpad
Peak Inflow 600 gpad
Peaking Factors
System Average 2.0 x
Depth/diameter ratio 0.70
* Design flow criteria vary considerably,depending upon land use
4-15
� I
CHAPTER FOUR
3. SANITARY SEWER DESIGN CRITERIA
All sewer lines within the City of Renton shall be designed in accordance with good engineering
practice by a professional engineer with minimum design criteria presented in Chapter 2 of the
"Criteria for Sewerage Works Design," prepared by the State of Washington Department of
Ecology,October 1985,or as superseded by subsequent updates. This chapter includes standards
and guidelines for design considerations (minimum pipe sizes, pipe slopes and wastewater
velocities),maintenance considerations,estimating wastewater flow rates,manhole locations,leak
testing and separation from water pipelines. These criteria have been established to ensure that
the sanitary sewers convey the sewage and protect the public health and the environment. The
sewer lines shall also conform to the latest City of Renton Standards and Specifications. Detailed
standards are included in Title 8, Chapter 5 of the City Code which is presented in Appendix D.
Requirements relating to design are listed below.
a. DESIGN LOADING FOR SANITARY SEWER FACILITIES
Sanitary sewer system flows are composed of residential, institutional, commercial, and
industrial sewage, along with infiltration and stormwater inflow. Sanitary sewer systems
must be capable of conveying the ultimate peak flows of these wastewater sources. No
overflows shall be permitted.
b. DESIGN PERIOD
The design period is the length of time that a given facility will provide safe, adequate
and reliable service. The period selected for a given facility is based on its economic life,
which is determined by the following factors: the structural integrity of the facility, rate
of degradation,cost of replacing the facility,cost of increasing the capacity of the facility,
and the projected population growth rate serviced by the facility. Collection and
interceptor sewers are designed for the ultimate development of the contributing area.
The life expectancy for new sanitary sewers, using current design practices, is in excess
of fifty years.
c. DESIGN OF SANITARY SEWER FACILITIES
Allowable sewer pipe shall be ductile iron, cast iron, PVC, or concrete. For normal
depth, PVC is generally preferable, because it has longer laying lengths, which results in
fewer joints, reducing the potential for infiltration.
Gravity sewers are sized to provide capacity for peak, wet-weather flows. The smallest
diameter sewer allowed is 8-inches. All sewers will be laid on a grade to produce a mean
4-16
Land Use Policies/Adjacent Systems/Design Criteria
velocity when flowing half-full of at least 2 feet per second. Manholes will be at least
48-inches in diameter and will be spaced at intervals not to exceed 400 feet on sewer
lines 15-inches in diameter or less, and 500 feet on sewer lines 18-inches in diameter or
larger. The design parameters are summarized in TABLE IV-6.
d. ROUGHNESS COEFFICIENT
The Manning equation shall be used to design and analyze wastewater flow characteristics
of the sanitary sewers. The Manning roughness constant En] shall vary depending on the
pipe material. Typical values are summarized in TABLE IV-6.
e. REFERENCE DATUM
The King County Aerial Survey (K.C.A.S.) is the common datum used within the City
of Renton for design and construction of sanitary sewer facilities.
f. SEPARATION BETWEEN SANITARY AND OTHER FACILITIES
The Department of Ecology requires separation of water and sewer facilities for health
reasons. Sanitary and storm sewer facilities shall have basic separation requirements for
construction purposes. A minimum horizontal separation of five (5) feet between sanitary
and other facilities shall be maintained. Wherever possible, a horizontal separation of
seven (7) feet is desirable. These distances are measured edge to edge.
g. HYDRAULIC ANALYSIS
The sanitary sewer system hydraulic analyses will be performed using the City's hydraulic
computer model. All new developments, with the exception of developments involving
less than five single-family residences, will require an analysis. The developer shall be
responsible for paying the cost of the analysis of the sanitary sewer system. If the
analysis concludes improvements need to be made, the developer and the City may need
to negotiate about who will pay the costs.
4. LIFT STATION DESIGN CRITERIA
Sewage lift stations within the City of Renton shall be designed in accordance with good
engineering practice by a professional engineer using the minimum design criteria presented in
Chapter 3 of the "Criteria For Sewerage Works Design," prepared by the Washington State
Department of Ecology,October 1985,or any subsequent updates, and shall conform to the latest
City of Renton standards and specifications. Detailed standards are included in Title 8, Chapter
5 of the City Code, which are presented in Appendix D. Requirements relating to the design are
listed below.
4-17
CHAPTER FOUR
TABLE IV-6: SANITARY SEWER DESIGN CRITERIA
Sanitary Sewer Sizing Peak Wet-Weather Flow
Minimum Sewer Size 8 inches in Diameter
Pipe Materials PVC
Reinforced Concrete Pipe
Cement Lined Ductile Iron
•Cement Lined Cast Iron
Manholes
Maximum Spacing 400 feet
Minimum Manhole Size 48 inches in diameter
Minimum Clear Opening 23 inches in diameter
Maximum Depth 20 feet(where possible)
Separation From Water Mains
•
Horizontal Separation (Parallel) 10 feet
Vertical Separation (Perpendicular) '18 inches.
Hydraulic Criteria
Depth to Diameter Ratio 0.70
Minimum Scouring Velocity 2 Feet Per Second
Manning Roughness Coefficient'
PVC - 0.011
Concrete 0.012
Lined DI/CI 0.012
Vitrified Clay 0.013
a. DESIGN LOADING FOR LIFT STATIONS
•
Lift stations shall be designed to handle the peak, wet-weather flow from the contributing
area. All lift stations shall have a minimum of two pump units, each with the capacity
to handle the.expected maximum flow.
4-18•
Land Use Policies/Adjacent Systems/Design Criteria
b. DESIGN PERIOD
The design period for lift stations shall take into consideration long-term needs,
replacement or expansion difficulties, service area growth rate and useful life. A lift
station should have a minimum design period of twenty years for the facility and ten
years for mechanical and electrical equipment. Consideration should be given to longer
design periods for lift stations that are expected to serve an indefmite life. Consideration
must also be given to the ability of the consumers to pay for the facilities.
c. DESIGN OF LIFT STATION FACILITIES
Lift stations shall be designed with-a minimum of two pumps, both of which have the
capacity to convey peak, wastewater flow rates. If wide variations in wastewater flow
rates are expected into the lift station, then consideration should be given to the use of
three or more pumping units. If three pumps are used, two of them must have the
capacity to convey peak, wastewater flow rates. Each pump shall be capable of passing
spheres of at least 3-inches in diameter.
Each lift station will be provided with either an on-site or portable power backup. A lift
station designed for portable power backup will be provided with sufficient wet-well
storage to allow adequate time for City maintenance personnel to transport, setup, and
provide the necessary backup,during a power outage. Wet-well storage will be designed
on the basis of the peak, wet-weather flow.
Force mains shall be sized to maintain a minimum velocity of 2 feet per second. The
force main shall have a maximum velocity of 10 feet per second when all pumps are
operating together. Regardless of these velocity criteria, minimum size shall be 4-inches
in diameter.
5. ELIMINATION OF LIFT STATION FACILITIES
Lift station facilities are typically eliminated through the development of the gravity sewer
system. Highest priority should be given to elimination of lift station facilities because of their
high degree of vulnerability and high operation and maintenance costs. These considerations
include environmental risks, life-cycle costs, lift station impacts on downstream sanitary sewer
facilities, vulnerability to vandalism, and lift station accessibility.
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LEGEND
■�'■■�■■� CITY LIMITS
SERVICE AREA
_ — -- — ADJACENT SEWER
SYSTEM BOUNDARIES
ADJACENT WATER DISTRICT
BOUNDARY (NO SEWER SERVICE)
.......... ..:................. SERV
ICE AREA OVERL
AP
FIGURE 7
CITY OF RENTON
COMPREHENSIVE SEWER PLAN
en.iAf%-FNT IIT11 ITV CVQTWUQ
CHAPTER V
SYSTEM ANALYSIS
AND RESULTS
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CHAPTER V
SYSTEM ANALYSIS & RESULTS
A. INTRODUCTION
This chapter presents a detailed analysis of all aspects of the existing system and their
recommended improvements. Threesystem components--the wastewater collection system, lift
stations and the telemetry and control system--are identified and described and then the results
of either their hydraulic or structural analysis are presented. Other deficiencies that do not apply
to one system component are presented at the end of this chapter.
Many sections of the existing sanitary sewer system have problems which fall into four
categories: deficient capacity, aging pipes, infiltration and inflow, and combined sewers.
Capacity problems in the existing sanitary sewer systemhave been identified using a hydraulic
computer model. The hydraulic analysis was conducted by entering saturation wastewater flow
rates in a computer model of the existing system to determine if it could adequately convey them.
Capacity problems do occur throughout the system in various degrees and.are a result of
inadequate pipe sizes or slopes.
Much of the existing sanitary sewer system was installed during the 1940s and 1950s as a federal
program to provide housing for workers at the Renton Boeing Plant. Many of these sewers have
reached the end of their useful economic life and require replacement. Many of them are in the
North Highlands and South Highlands Subbasins. The City of Renton is currently in the process
of replacing these aging sanitary sewers. .
Infiltration and inflow occur in all sanitary sewer'systems. Infiltration is defined as water
entering the sanitary sewer system through pipes, joint connections, manhole covers and walls.
Inflow is defined as water discharged to the sanitary sewer system through connections to roof
drains, yard drains, foundation drains, and cross connections with storm sewers and combined
sewers. The combination of both infiltration and inflow can be a major portion of the total
wastewater flow which must be carried by the sanitary sewer system. Infiltration and inflow
problems in an existing sanitary sewer system can be studied to determine their effect. Many
infiltration and inflow problems can be corrected through grouting of existing pipes and.
manholes, replacing damaged pipes, and eliminating illegal connections to the sanitary sewer
system.
Combined sewers are designed to carry both stormwater and wastewater within a single system,
which current design practices in the City of Renton do not allow because it causes stormwater,
which is relatively clean, to be treated along with wastewater. Combined sewer systems within
the City have been replaced with separate sanitary and storm sewer systems,except for one along
the lakefront in the Kennydale area.
5-1
CHAPTER FIVE
1. HYDRAULIC ANALYSIS
A hydraulic computer model of the City's sewer system was developed as a part of this plan
update. The purpose of this model was 1) to evaluate the existing sanitary sewer system and
determine areas of capacity constraint, and 2) to provide a tool for planning future improvements.
The hydraulic computer model was created using a software package designed by Specialized
Software Products, Inc., of Tukwila, Washington.
Two basic kinds of data were needed for the computer model: physical data and wastewater flow
data. The physical data of the sanitary sewer system was taken from as-built drawings and other
records provided by the City. Physical data was only available for 60 to 70 percent of the
sanitary sewer system. As a result the unmodelled portion of the sanitary sewer system cannot
be evaluated using this computer model. The physical data entered into the computer model
included manhole numbers, pipe invert elevations at each manhole, and pipe length, diameter,
and material type. Physical data not entered was the age or date of construction of.the various
system components.
The wastewater flow rates entered into the computer were based on estimated saturation
conditions because those are the basic criteria around which sanitary sewer facilities are designed.
Domestic wastewater flow.rates were determined by land use designations for the entire City.
The wastewater flow rate criteria set for each land use designation is summarized in TABLE IV-
3. The entire sanitary sewer system was first divided into sections and those sections divided
into their land use designations. The total area of each land use designation within each section
was calculated and then used to determine the domestic wastewater flow rate and infiltration and
inflow data.. The resulting flow rates and data were then divided equally amongst the sanitary
sewer manholes within that land use designation. Pump flow rates from each of the lift stations
were determined through review of the operations and maintenance manuals, and this flow data
was distributed to the appropriate manholes.
The hydraulic computer model output was developed through a mathematical synthesis of the
physical data and wastewater flow rate information which was entered into the model's data base
for each pipe section. The maximum capacity of each pipe section was determined using the
Manning's equation. A depth to diameter ratio of 0.70 was used to describe the maximum,
desired hydraulic condition within a pipe section. The Manning's co-efficient for the various
pipe materials is listed in TABLE IV-3. The slope used in the Manning's equation was
calculated by the computer model using the invert elevation of the upstream and downstream
manholes. -
The expected peak, wet-weather flow rate at saturation was calculated using the various flow
rates entered onto the model data base. A peaking factor of 2.0 was applied to the domestic flow
rate entered into each manhole. The peak, domestic flow rates, infiltration and inflow, and lift
5-2
System Analysis and Results
station flow rates were then summed downstream through the entire basin. The model output..,.
includes the peak, wet-weather flow rate and maximum velocity for saturation conditions.
The hydraulic analysis of the existing sanitary sewer system involved several steps. First, a
comparison between the peak, wet-weather flow rates and the maximum capacity of each pipe_
section was made. A pipe section was determined to be over capacity if the ratio of the peak, _
wet-weather flow rate to the maximum flow rate was over 70 percent. This provided a safety
factor which would help account for variations in the Manning's co-efficient and missing data
not entered into the computer data base. The second step identified the pipe sections with
adverse pipe slopes (those pipe sections where the upstream manhole is lower than the
downstream manhole),and the third step identified pipe sections which were constructed within
inadequate slopes to achieve carrying velocity.
This model will be used by the City in the future to evaluate changes to the existing system or
additions to the system during the design phase of each sewer project. However, to increase the
reliability of the model output, it is necessary that the City generate the physical data for the
remaining sewer system that is not currently modeled. In addition, the existing physical data and
wastewater flow data entered in the current model should_be checked and verified. Finally, a
model report should be prepared in order to document the information used in developing the
model and to generate a complete print out of both the input data and the output results.
2. STRUCTURAL ANALYSIS
A structural analysis is a visual inspection of the existing system either by a video camera or
actual inspection during normal operations and maintenance.
The Sanitary Sewer Maintenance Division owns and operates its own sewer video inspection
equipment. At this time,the video equipment is used approximately one day per week. Video
inspections have been organized and documented since 1988.
The video inspection averages approximately 1500 feet per day. The inspection process requires-
hydraulic jet cleaning of the sanitary sewer section prior to the video inspection. After
completion of the video inspection, roots are cut and cracks are sealed, if necessary, before
proceeding to the next section. The video inspection equipment requires three people to operate.
If traffic control is necessary, two additional people are required. At the current rate, it will take
twelve years to video inspect all existing sanitary sewers. It is recommended that sewers near
the end of their useful life be video inspected every five years. All other sewers should be
inspected every ten years.
Currently, the video tapes taken by the maintenance crews are stored and cataloged at the City
Shops. However, sanitary sewer video tapes of new additions are stored in uncataloged boxes
5-3
CHAPTER FIVE
which are then placed in the City's archives. The City should, catalog all sanitary sewer video
tapes using a computerized data base and store them in a single location for easy retrieval.
B. SYSTEM-WIDE CONCERNS
1. METRO -INTERCEPTOR SURCHARGE
During peak flows,METRO will use its interceptors for storage of wastewater and for controlling
flows in the Renton Treatment Plant. This results in surcharging of the METRO interceptors.
METRO reserves the right to surcharge its interceptors to an elevation of 22 feet. METRO has
never reached this extreme; however, the City has experienced a sewer surcharge problem in the
low lying areas. The surcharge elevation of 22 feet is shown on the Sanitary Sewer Hydraulic
Profile (FIGURE 2). This hydraulic profile illustrates that the City's sanitary sewers would be
affected by METRO's surcharging, because their inverts are below the 22-foot elevation. As a
result of METRO's surcharging, it is possible that additional wastewater could overflow in low
lying areas through manhole covers and side sewer connections.
The City has not designed facilities to accommodate a sewer surcharge to an elevation of 22 feet.
the City's current position is that METRO is responsible for providing adequate capacity within
its interceptors and wastewater treatment facilities. In addition, the City considers METRO to
be responsible for proper effluent disposal. During the preparation of the Comprehensive Sewer
Plan, no analysis was made of the effect of METRO's surcharging on the City's sewer system.
METRO should conduct such a study to identify areas of potential risk and alternatives to
mitigate this problem.
2. ADJACENT UTILITY SYSTEMS
For purposes of this plan, all of the comprehensive plans for the adjacent utility systems
described in Chapter 4 were examined. This plan's analysis used their predictions for the future
capacity they will need when they convey wastewater through Renton. However, adjustments
to,the City's interceptors may need to be made as these systems further clarify their needs. The
City of Renton has several agreements with adjacent utilities that allow joint use of facilities
within the City. It is important that these adjacent utilities are restricted to the volume of
wastewater discharged to the joint use facilities. If capacity problems become evident, through
visual inspection or flow measurements, then the City and the adjacent utility should work
together to investigate the potential sources, both inside the City and within the adjacent utility
to correct the problem.
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System Analysis and Results
3. STRUCTURAL PROBLEMS
The following is a discussion of specific problems that are associated with the gravitysanitary
tarY
sewer system in the City of Renton.
a. AGING SEWERS
Many of the gravity sewers within the central business district and the Highlands were
constructed in the 1940s as a result of housing construction during the war for the Boeing
plant in Renton. Many of these. sewers have reached their design life expectancy
(approximately 50 years); as these sewers approach the end of their useful life, increased
maintenance and structural inspections should occur to locate and prevent pipe failures.
This comprehensive plan identified some of the older sewers and has established a capital
improvement program to replace and upgrade them. The City should continue this
process.
b. REVERSE SLOPES AND PIPE SAGS
A major maintenance problem, associated with sanitary sewers that are laid with a reverse ,
slope, or have a sag due to improper construction or differential settlement, is that they
require periodic cleaning to remove debris. There are approximately 90 such sewer
sections within the City.
c. ROOT PROBLEMS
Tree roots cause problems in sanitary sewers by penetrating and cracking sanitary sewer
pipe joints to feed on the wastewater. Tree roots can also create blockages, resulting in
backed-up sewers. The City has approximately 30 sections of pipe which require routine,
root cutting maintenance to prevent wastewater backups and reduce pipe damage.
d. GREASE PROBLEMS
Grease problems are typically associated with major food processing operations, the
majority of which involve restaurants where grease is a component of the wastewater.
Many of the older restaurants within the City do not have grease traps. Newer
restaurants have been and will continue to require the installation of grease traps;
however, many of these grease traps are not properly 'maintained because of a lack of
proper monitoring. Grease buildup problems occur most often in the side sewers.
However, some grease buildup problems also occur in the sanitary sewer collection
system. When problems do occur, the City maintenance crews are usually called out to
investigate. The City will need to allocate additional maintenance hours for monitoring
5-5
CHAPTER FIVE
this problem. Ultimately, a proper monitoring program should reduce maintenance time
involved in removing grease buildup.
Preventive maintenance should involve the installation of grease traps in all restaurant and
food processing type facilities and proper maintenance of those grease traps. An
ordinance should be prepared requiring owners of grease traps to write a letter, on an
annual basis, certifying that proper inspection and maintenance have been performed.
Certification should require a small fee to cover administrative costs. Fines should be
imposed for certification fraud of improper inspection and maintenance practices. In
addition, cost of cleanup due to problems associated with improperly maintained grease
traps should be assessed to property owners.
4. EARTHQUAKE PREPAREDNESS
The Seismotectonic Map of the Puget Sound Region (Gower and others, 1985) shows two
significant faults and three small faults less than 10 miles from Renton City Hall. These faults
are zones of weakness in the bedrock that could possibly be the sites of future earthquakes. The
largest fault lies north of Renton; it is inferred on the basis of an abrupt change in relief (an
escarpment) in the bedrock topography of the Puget Lowland. Many small earthquakes (<3.5 on
the Richter Scale) have been detected along this escarpment, especially beneath Seattle and
Mercer Island where the depth to bedrock is deepest. The escarpment has an east-west trend
which is perpendicular to the regional,north-south structural trend of the Puget-Willamette trough
and the Cascade range. Because the basin in the bedrock north of this escarpment is filled with
sediments, it is not expressed at the surface from Winslow to Mercer Island. However, east of
Mercer Island, where it closely parallels I-90, it is marked by the high relief of the Newcastle
Hills, Squak Mountain and Tiger Mountain. The middle to lower Tertiary rocks comprising those
hills, and possibly upper Tertiary sediments (Walsh,personal communication, 1990) are strongly
folded. Despite the seismic record of numerous earthquakes along the escarpment, no rupture
or deformation of the ground surface appears to have occurred during the last 15,000 years. -
Another major fault that passes through Renton may begin in Bremerton and extend to Issaquah
or connect with the well defined Hobart fault east-south-east of Renton. This fault is locally well
expressed in lower to middle Tertiary rocks, but it does not deform Vashon glaciation and
younger sediments (<15,000 year old). Furthermore, because historical earthquakes are not
concentrated along its trend,this zone of weakness in the bedrock does not appear to be a hazard.
Similarly, smaller faults west of Renton in Tukwila and through the South Center area, cut only
the bedrock and do not appear to have been active for at least 15,000 years.
Although direct rupture of the ground surface due to a major earthquake originating in the Renton
area is unlikely, ground shaking and failure resulting from a regional magnitude 6.5 to magnitude
5-6
System Analysis and Results
7.5 earthquake is likely during this decade. The recurrence interval for deep earth quakes (>40
km deep) of this magnitude is about 25 years in the Puget Lowland.
Because so many earthquakes have occurred during the 14,000 years since the glacially sculpted
landscape emerged from beneath the melting ice, most features and sediments are adjusted to the
ground motion of magnitude 7 or an even larger event. However, steep slopes that have been
undercut by rivers, man or the natural weathering and sapping processes of migrating
groundwater, will be susceptible to failure. Particularly likely to fail (liquefy or slump) are areas
of recent fill like the Cedar River delta and man-made deposits of insufficiently compacted
saturated sandy to silty soils.
In general, structures close to bedrock will be less impacted by ground motion than those on
unconsolidated sediments or man-made fill. However, the topography of the bedrock surface -
beneath Renton will have a major influence on the focusing or attenuation of seismic energy.
Areas overlying old valleys or basins in the bedrock, where fill may be hundreds of feet deep,
may receive up to ten times the shaking that neighboring bedrock hillsides will experience (Then
and Hadley, 1986). Thus, facilities designed for the Duwamish valley and Maplewood area will
have to meet higher standards of seismic design.
Water and sewer systems of the Renton area will very likely experience the significant ground
motion associated with about a magnitude 7 earthquake during the 1990s. Because Renton has
developed both on bedrock and deep fills of unconsolidated sediments, seismic energy will be
locally focused, and very different degrees of ground motion will be experienced by different
parts of the system. Lift stations should be located as close to bedrock as possible, and the
system should be designed to accommodate significant changes in seismic stress over relatively
short distances (tenths of a mile).
C. WASTEWATER COLLECTION BASINS
The following section of this chapter presents an analysis of wastewater collection basins, which
is presented in an order based on the seriousness of each basin's deficiencies. See FIGURE 1
for a location of basins. A brief summary of those deficiencies follows.
• The wastewater within the May Creek Basin is currently diverted into the Lake
Washington East Basin causing an overload of that system. The construction of
the May Valley Interceptor is necessary to correct these problems.
• In the Lower Cedar River Basin, a moratorium on development is in place because
the sewer pipe lines are currently over capacity.
5-7
CHAPTER FIVE
• Lake Washington East Basin currently receives wastewater from the Sunset Lift
Station which significantly contributes to overloading the North Highlands
Interceptor.
• The Panther Creek subbasin in the Black River Basin is at or near capacity; the
Renton Industrial Subbasin is experiencing increasing demands as a result of land
use changes.
• In the Lake Washington West Basin, the West Renton subbasin has sections of
sewer lines that experience some capacity problems.
• The Duwamish Estuary Basin is for the most part undeveloped and is not
experiencing capacity problems at this time.
1. MAY CREEK BASIN
The May Creek Basin is located in the northeast part of the City. Most of this basin is currently
unsewered and is located on the periphery of the City's current service boundary. The May
Creek Basin is jointly served with King County Water District No. 107. The City serves
approximately 910 acres of this basin which consists of primarily single-family and light
commercial land uses. The ultimate sewerage of the May Creek Basin will be through the
extension and completion of the proposed May Valley Interceptor. At this time, the following
three lift stations serve low lying areas along Lake Washington in this basin: Misty Cove, Baxter
and Denny's Lift Stations.
The City is experiencing development pressure within the May Creek Basin and the Honey Creek
Subbasin,which requires immediate attention be given to the sanitary sewer facilities in this area.
The primary concern is the Devil's Elbow Lift Station. This lift station was designed and - -
constructed in 1985 to accommodate existing development. In addition, the Devil's Elbow Lift
Station has experienced operation problems and the force main is structurally unreliable due to
soil movement along NE 27th Street.
The City is attempting to accelerate the construction of the May Valley Interceptor with the
assistance of King County Water District No. 107. The May Valley Interceptor would eliminate
the need for the Devil's Elbow and Sunset lift stations. Elimination of these lift stations would
also eliminate many of the capacity problems within the Kennydale and North Renton Subbasins.
However, completion of this interceptor, along with Phase IV of the Honey Creek Interceptor,
is not expected until 1993 at the earliest.
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System Analysis and Results
Interim improvements to the Devil's Elbow Lift Station should be studied. These interim
improvements could be completed in 1991 and would increase the reliability and possibly the
capacity of the Devil's Elbow facilities.
a. HONEY CREEK SUBBASIN
The May Creek Basin includes the Honey Creek Subbasin, which is currently served by
the Sunset, Summer Wind and Devil's Elbow Lift Stations. These lift stations currently
pump wastewater collected in the Honey Creek Subbasin to the Lake Washington Basin
East. They will be removed from service after completion of the May Valley Interceptor
and the Honey Creek Interceptor.
This is a large subbasin serving approximately 430 acres of the city. The sewage is
routed to Sunset Lift Station where it is pumped to the North Highlands Subbasin. A
serious capacity problem exists in this subbasin within the interceptor along Sunset
Avenue east of Union Avenue. The sanitary sewers within the Honey Creek Subbasin
are designed to direct 95 percent of the wastewater toward the Sunset Lift Station. This
results in excessive overloading of this lift station. On many occasions the Sunset Lift
Station is required to operate both pumps continuously for several days, which is an
undesirable operating condition. In addition, wastewater discharged from this lift station
adversely impacts gravity sewers in the North Highlands Subbasin. If the sunset lift
station cannot pump all of the incoming flow, the wastewater is automatically discharged
through an overflow device to the Honey Creek Interceptor and is then pumped to the
Kennydale Subbasin through the Devil's Elbow Lift Stations.
During peak storm events, wastewater flow rates have been know to exceed the capacity
of both the Sunset and Devil's Elbow Lift Stations. This has resulted in raw sewage
overflows into Honey Creek. A large potential for development exists within this
subbasin, and the correspondingly higher flows will create more extensive capacity
constraints in the future. A more detailed description of the capacity problems of the
Devil's Elbow Lift Station can be found in the lift station section of this chapter.
As reported in the 1983 Comprehensive Sewer Plan, sanitary sewers within the Honey
Creek Subbasin exhibit substantial amounts of infiltration and inflow, which results in
excessive loading of the Sunset Lift Station and periodic overflows into Honey Creek.
In an attempt to reduce the amount of infiltration and inflow within this subbasin, the City
contracted with Gelco Grouting Service to examine and correct infiltration and inflow
problems within this basin. The work was separated into three phases under project Nos.
S-370(1983), S-379(1985), and S-421(1986). In addition, the City also constructed the
Honey Creek Interceptor, which is currently designed to receive the wastewater from the
Honey Creek Subbasin that cannot be handled by the Sunset Lift Station.
5-9
CHAPTER FIVE
2. LOWER CEDAR RIVER BASIN
The Lower Cedar River Basin includes the eastern portion of the City of Renton bordering the
Cedar River. The City serves approximately 2610 acres at this basin which consists of primarily
single-family and multi-family developments with some commercial and light industrial land
uses. This basin includes the Central Renton, South Highlands, Maplewood, Heather Downs,
East Maplewood, and Tiffany Park Subbasins.
Due to extensive development and annexation pressures within this basin, an engineering
investigation of the sanitary sewer system in the South Highlands, Maplewood and Heather
Downs Subbasins was performed in the spring of 1989 by RH2 Engineering. The results of this
study are present in a report entitled An Engineering Investigation of Sanitary Sewer Facility
Improvements for the East Renton, Heather Downs, and South Highlands Areas. These results
indicated inadequate sanitary sewer capacity in the South Highlands and Heather Downs
Subbasins, and limited available capacity in the Maplewood Subbasin.
As a result of this engineering investigation, the City.Council passed Resolution No. 2764, which
established a moratorium on the connection of new construction to any of the existing sanitary
sewers in the South Highlands, and Maplewood or Heather Downs Subbasins. The moratorium
will be in effect until January 31, 1992, unless extended by the City Council. The City is
currently working the environmental study and predesign alternatives for the proposed East
Renton Interceptor which would solve the sanitary sewer capacity problem.
a. CENTRAL RENTON SUBBASIN
The Central Renton Subbasin includes the central business district of the City located
north of the Cedar River and south of North 3rd Street. Many of the sewers in this
subbasin are old and some have experienced structural failure. This area is within Zone
1 of the Aquifer Protection area, and exfiltration from these sewers could contaminate the
City's drinking water supply. This area consists primarily of residential and commercial
land uses.
b. SOUTH HIGHLANDS SUBBASIN
The South Highlands Subbasin is located south of NE 7th Street and north of NE 4th
Street in the Highlands area. Land use in this subbasin consists primarily of single-family
residential developments.
This is a large subbasin serving approximately 600 acres. It connects into the METRO
Interceptor at.North 4th Street and Logan Avenue North. Two lift stations pump into this
basin: Honeydew and Union 600. As a result of development pressures within this
5-10
System Analysis and Results
subbasin, an engineering investigation on the sanitary sewer system was performed in
1990 by RH2 Engineering. The results of this study are presented in a report entitled An
Engineering Investigation of Facility Improvements for the South Highlands Sanitary
Sewer Basin. The major problem identified for this subbasin is an inadequately sized
interceptor, which the report presented options for correcting. The capacity created
through the East Renton project will benefit this basin.
c. MAPLEWOOD SUBBASIN
The Maplewood Subbasin is located primarily south of NE 4th Street. This area serves
a variety of land uses including single-family and multi-family residential as well as some
commercial and light industrial land uses. This subbasin receives wastewater pumped
from the Union 600 Lift Station. This subbasin connects into the METRO Cedar River
Interceptor along the Maple Valley Highway.
This subbasin has adequate sewer capacity for existing development. However, future
development will require either the construction of additional sewer capacity or the
reduction of existing wastewater flows such as the elimination of the Union 600 Lift
Station.
d. HEATHER DOWNS SUBBASIN
The Heather Downs Subbasin is located along the eastern border of the city limits. This
subbasin consists primarily of single-family residential development with some multi-
family developments in the northern portion of this subbasin. Several capacity problems
currently exist within this subbasin. The City is currently developing solutions through
the East Renton Interceptor project which would alleviate the sewer capacity problems.
This project is in the predesign and environmental review stage.
In addition to the capacity problems in the Heather Downs Subbasin, a section of the
Heather Downs Interceptor was constructed on a very steep slope (approximately 65%
slope). The sewer section in question is located along a power line easement near the plat
of Maplewood. The interceptor was constructed using 10-inch PVC sewer pipe with
concrete collars to stabilize the pipe on the steep slope.
No indication of potential structural failure exists. However, a study should be conducted
to determine the integrity of the sanitary sewer. The City should video inspect this sewer
to examine the internal integrity and to locate any pipe or manhole movement. If a
problem is found, a geotechnical consultant could examine the steep slope for stability
and the potential of soil shifting. This information will help determine the need for
construction of an interceptor in a new alignment.
5-11
CHAPTER FIVE
e. EAST MAPLEWOOD SUBBASIN
The majority of the East Maplewood Subbasin is located outside the city limits.
Currently a majority of this basin is unsewered. The small portion that is sewered is
being pumped to the South Highlands Subbasin through the Honeydew Lift Station. With
recent development in this area, the City is currently studying the construction of an
interceptor in this subbasin to serve areas within the City through the East Renton
Interceptor Project.
f. TIFFANY,PARK SUBBASIN
The Tiffany Park Subbasin is located on the south side of Cedar River. This subbasin
includes primarily single-family and multi-family developments. This subbasin includes
two lift stations: the Falcon Ridge Lift Station and the Cottonwood Lift Station. In
addition, this subbasin receives wastewater from the Soos Creek Water and Sewer
District.
The Tiffany Park Interceptor is a joint use facility between the City of Renton and the
Soos Creek Water and Sewer District (formerly Cascade Sewer District). The gravity
interceptor is currently not experiencing capacity problems, but there is evidence that
peak, wastewater flows exceed the design capacity of METRO's inverted siphon crossing
the Cedar River. METRO is considering replacing the inverted siphon with a new gravity
sewer which would be sized to accommodate these peak flows. This new METRO sewer
would be located on a bridge over the Cedar River that could be used for a proposed trail.
The majority of the wastewater in this interceptor originates in the Soos Creek system,
including Soos Creeks Lift Station No. 5. According to the Soos Creek Comprehensive
Sewer Plan, Lift Station No. 5 is considered to be a permanent facility which serves a
large basin. As development of this basin proceeds, increased pumping from the lift
station will aggravate capacity problems in METRO's inverted siphon and increase the
potential for wastewater release to the Cedar River.
3. LAKE WASHINGTON EAST BASIN
The Lake Washington East Basin is located in the northern part of the City and includes the
Kennydale, North Highlands and North Renton areas of the City. The City serves this entire
basin of 2100 acres which consists of a variety of land uses including single-family and multi-
family residential , light commercial and heavy industrial activities. This basin is divided into
four subbasins which collect wastewater and transport it to METRO's East Side Interceptor.
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System Analysis and Results
a. KENNYDALE LAKEFRONT SUBBASIN
The Kennydale Lakefront is the northernmost subbasin in the Lake Washington East
Basin. This subbasin serves primarily residential communities and includes the Lake..
Washington Flush Station and Lake Washington Lift Station No. 2, which serve the
residential community adjacent to Lake Washington (Coleman Point).
This is a medium size subbasin of approximately 110 acres which has almost reached
saturation development. This subbasin connects into the METRO Interceptor at N. 38th
Street and Lake Washington Boulevard.
The Kennydale Lakefront sanitary sewer collection system is a low-pressure, force main.
Water from Lake Washington is pumped periodically into the force main through Lake
Washington flush station. Lake water and the sewage is discharged from this low-
pressure force main into the Lake Washington No. 2 Lift Station, where it is then pumped
into the METRO East Side Interceptor. The original force main was installed in 1960 and
has a history of various problems and requires considerable maintenance. In 1986 the
City attempted to improve the collection system through the installation of additional
cleanouts on the low-pressure force main and the installation of plug valves on each of
the individual side sewers, which could be closed during cleaning operations. This work
was conducted under project No. S-442.
Upon completion of the additions to the force main and side sewers, the City attempted
to clean the low-pressure force main using a sewer pig. Even though the side-sewer plug
valves were closed, two homes were flooded out with backed-up wastewater. Since 1986
no further attempts have been made to thoroughly clean the low-pressure, force main.
Since this part of the sewer system continues to require high maintenance, the City should
continue examining alternatives, that could reduce some of the maintenance and provide
a more reliable and efficient system.
b. KENNYDALE SUBBASIN
The Kennydale Subbasin serves primarily residential communities including both single-
family and multi-family developments. The eastern portion of this subbasin is mostly
unsewered at this time. The City has received verbal indication from the King County
Health Department of random septic system failures in this area. While the extent of
these failures is not known, there is no indication of area or basin-wide problems, but
rather localized problems. This subbasin includes two lift stations: the Highgate Lift
Station and the Azalea Lane Lift Station. In addition, the Devil's Elbow Lift Station
pumps wastewater from the Honey Creek Subbasin to the Kennydale Subbasin.
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CHAPTER FIVE
The basin serves approximately 200 acres of the City of Renton, where there is potential
for future development and hence higher, flow rates. This subbasin was modelled as if
the Devil's Elbow and Azalea Lane lift stations were on-line, and were pumping
simultaneously. the subbasin connects into the METRO East Side Interceptor at Lake
Washington Boulevard, south of 28th Street.
c. NORTH HIGHLAND SUBBASIN
The North Highlands Subbasin serves a large area of both residential and commercial
developments. A major portion of the sanitary sewer system in the North Highlands
Subbasin was constructed during World War II. These older sewer systems are near the
end of their useful life and require increased maintenance. The Sunset Lift Station pumps
sewage from the Honey Creek Subbasin to the North Highlands Subbasin.
The North Highlands Interceptor beginning at NE 7th Street and continuing along Sunset
Boulevard (approximately 7,200 lineal feet) currently exceeds design capacity. This is
primarily a result of receiving wastewater from the Sunset Lift Station. The City's CIP
currently has funds targeted for replacing the interceptor, which will increase the capacity
of the lower portion of this interceptor.
Since wastewater pumped from the Sunset Lift Station is a major factor contributing to
capacity problems in the North Highlands Interceptor, additional efforts should focus on
constructing the May Valley Interceptor which would provide gravity sewer service to the
Honey Creek Subbasin. However, until the May Valley Interceptor is constructed and the
Sunset Lift Station is removed from service, the current configuration provides the best
solution.
d. NORTH RENTON SUBBASIN
The North Renton Subbasin is located on the south end of Lake Washington between the
Cedar River and Interstate 405. This subbasin consists of commercial and heavy
industrial land uses and includes two lift stations: the Boeing Lift Station and the Lake
Washington Beach Lift Station.
The North Highlands/North Renton Subbasin serves approximately 600 acres in the City
of Renton. Many sections of this basin were not modelled due to a lack-of physical data.
Severe capacity problems exist within the interceptor along N 6th Street as a direct result
of receiving wastewater from the Sunset and Boeing Lift Station. The Boeing Lift Station
is planned to be eliminated through the construction of the Park Avenue Interceptor. This
subbasin connects into the METRO Interceptor at N 6th Street and Logan Avenue N.
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System Analysis and Results
4. BLACK RIVER BASIN
The Black River Basin is a large drainage basin in the southwest part of the City and includes
the South Renton, Rolling Hills, Talbot Hill, Renton Industrial, Panther Creek,and Springbrook
Subbasins. The higher elevations in the Rolling Hills, Talbot Hill, and Panther Creek areas are
generally single-family and multi-family residential developments, while the valley floor is
generally industrial and commercial land uses. The City serves approximately 3170 acres of this
basin.
a. SOUTH RENTON SUBBASIN
The South Renton Subbasin includes the commercial business district south of the Cedar
River and the residential communities located on the lower slopes of the Rolling Hills.
Currently no lift stations are located in this subbasin. Most of the sanitary sewers are in
adequate condition and have sufficient capacity for this subbasin; however, older sewers
do exist, but are not known to cause problems at this time. Some sewers will need to be
relocated as a result of construction on I-405. This will be performed by the Washington
State Department of Transportation.
b. ROLLING HILLS/TALBOT HILL/PANTHER CREEK/SPRINGBROOK SUBBASIN
The Rolling Hills, Talbot Hill, Panther Creek and Springbrook Subbasin serves the
residential communities in the southeast area of the City. Thissubbasinserves primarily
single-family and multi-family communities. The Talbot Hill Subbasin includes the
Talbot Crest Lift Station. An agreement is currently being negotiated between Soos
Creek Water and Sewer District and the City which will define service area boundaries
and result in joint use of the Springbrook Interceptor which serves the Springbrook
Subbasin.
The Talbot Road Interceptor which serves a majority of the Panther Creek Subbasin is
undersized to service this area. The interceptor should be replaced with larger pipe.
c. RENTON INDUSTRIAL SUBBASIN
The Renton Industrial Subbasin includes the area south of Interstate 405 and west of the
East Valley Freeway. This area is also called the Orillia Industrial District. This
subbasin includes the Lind Avenue and East Valley Lift Stations. Many areas within the
subbasin are only sparsely developed at this time. This area was originally developed for
light industry and warehousing; however,in recent years the land use has changed rapidly.
Increasingly, warehouse type buildings are being converted to office parks, which places
increased demands on the existing sewer systems. Consequently, the City should
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CHAPTER FIVE
periodically re-examine wastewater flow rates in order to better evaluate sanitary sewer
needs.
5. LAKE WASHINGTON WEST BASIN
The Lake Washington West is located in the northwest part of the City. The basin is bordered
to the east by the Cedar River and,to the south by Sunset Boulevard West. The City serves
approximately 710 acres within this basin which consists of primarily single-family and light
commercial land uses. This basin primarily transports wastewater east into the METRO East
Side Interceptor. This basin is comprised of two subbasins: the West Hill Subbasin and the
West Renton Subbasin. Also included in this basin is a portion of the Bryn Mawr-Lakeridge
Water and Sewer District and Skyway Water and Sewer District.
a. WEST HILL SUBBASIN
The West Hill Subbasin serves the residential communities on the West Hill north of
Renton Avenue South. The subbasin includes the Airport Lift Station located at the City
of Renton Airport.
This is a large subbasin serving approximately 350 acres. Potential for additional
development within the city limits in this subbasin is minimal. Some areas were not
modelled in this subbasin due to a lack of physical data. Data which is available is
suspect, due to extensive sewer reconstruction, rehabilitation, and the age of the sewers.
The sewer system which was modelled appears to have sufficient sewer capacity.
b. WEST RENTON SUBBASIN
The West Renton Subbasin serves residential communities west of Rainier Avenue South
and the commercial district east of Rainier Avenue South. This subbasin includes the
Sears Lift Station and the Earlington School Lift Station.
The West Renton Interceptor located in the West Renton Subbasin is experiencing
capacity problems along Renton Avenue S. These capacity problems are primarily a
result of undersized sanitary sewers, which are serving a large area. Wastewater flows
from the Sears and Earlington School Lift Stations are also adversely impacting this
interceptor. The existing interceptor is approximately 3,700 lineal feet of 12-inch and 15-
inch sanitary sewer. The City should examine the possibility of increasing the size of this
interceptor or providing additional interceptors in this basin. Many sewers are also very
old and require replacement, such as the gravity sewers along S 4th Street.
5-16
System Analysis and Results
6. DUWAMISH ESTUARY BASIN
The Duwamish Estuary Basin is located in the western portion of the City and includes the
immediate area surrounding METRO's Renton Treatment Facility. This basin also includes a
portion of the Skyway Water and Sewer District. The City serves approximately 580 acres -.
within this basin which primarily consists of light industrial land uses on the valley floor and
residential developments on the hillsides. There are no sewer capacity problems which have been
identified within this basin.
D. LIFT STATIONS
This plan evaluated lift stations against the standards and guidelines for construction of sewage
lift stations that are detailed in Chapter 3 of the "Criteria for Sewage Works Design" manual
prepared by the Washington State Department of Ecology. This chapter includes design
standards and guidelines for lift station location, pump sizing and selection, wet well sizing
criteria, alarm system, emergency response criteria, force main criteria, lighting and ventilation.
These standards and guidelines have been established to ensure protection of the environment and --
property through design and operation of reliable sewage lift stations.
The City of Renton has 23 sewage lift stations, which are shown and inventoried in FIGURE
3. Each station was inspected for safety and accessibility, and operation and maintenance
manuals for each were reviewed at the City Shops. The results of these inspections are presented
in the following paragraphs, and the lift station inventory summaries are presented in TABLE
V-1. Detailed Lift Station Data Sheets are provided in Appendix A.
With few exceptions, these lift stations have no major inadequacies in terms of safety or
reliability. Most of the lift stations have tone-generated telemetry to the City Shops which
activate alarms for high and low wet-well levels,power failure, signal loss and, in some stations,
intrusion alarms.
1. LIFT STATION NO. 1 - AIRPORT
The Airport Lift Station is located on the east side of West Perimeter Road within the airport
property. This facility is a fiberglass, wet well mounted,duplex lift station with a duplex vacuum
priming system. This facility serves the airport facility along West Perimeter Road. The lift
station is in good condition and has proven to be reliable. An emergency power connection
should be installed at this facility.
5-17
f
TABLE V-1: LIFT STATION INVENTORY SUMMARY tvi
ki
No. Lift Station Name Location No.of FM H.P. Phase Pump Capacity T.D.H. Wet Well Emerg. Telemetry Voltage tm
Pumps Size Speed GPM Ft Type Power
In. RPMs Connect
1 AIRPORT West Perimeter Road 2 4 7.5 3 1750 100 54 WW MTD No Yes 230/460
2 AZALEA LANE 2310 Aberdeen Avenue NE 2 6 7.5 3 1766 150 44 WW MTD Yes Yes 208
3 BAXTER 5015 Lake Washington Blvd N 2 8 3 3 865 400 23 WW MTD Yes Yes 230/460
Baxter Pole Yard
4 BOEING Park Ave N and N 8th Street 2 6 7.5 3 860 400 30 WW/DW No Yes 230/460
5 COTTONWOOD 2003 Maple Valley Highway 2 6 5 3 1150 300 23 WW MTD No Yes 230/460
West of Riviera Apartments
6 DENNY'S 4750 Lake Washington Blvd N 2 4 5 3 1735 100 35 WW MTD Yes Yes 230/460
7 DEVIL'S ELBOW NE 27th St and 120th Place SW 2 8 40 3 1760 400 157 WW MTD Yes 230/460
8 EARLINGTON SCHOOL 8055 S Langston Road 2 6 5 3 860 150 30 WW/DW No Yes 230/460
ce
ce 9 EAST VALLEY 3400 East Valley Road 2 8 5 3 1150 350 22 WW/DW No Yes 230/460
00 10 FALCON RIDGE 2456 SE 8th Street 2 4 15 3 1800 100 101 WW MTD Yes Yes 230/460
11 HIGHGATE 1824 NE 20th Street 2 4 3 1 1170 100 35 WW MTD Yes Yes 230
12 HONEY CREEK 3501 NE 17th Place 2 4 7.5 1 1750 100 58 WW MTD No Yes 230
13 HONEYDEW Union Ave NE near NE 7th St 2 4 2 3 1160 100 15 SUBMERS. No Yes 230
14 LAKE WASHINGTON BEACH 1101 Lake Washington Blvd N 2 4 3 3 900 125 25 WW/DW No Yes 230/460
Coulon Park Parking Lot
15 LAKE WASHINGTON FLUSH 2727 Mountain View Avenue S 1 8 1.5 3 1150 400 63 SUBMERS. No Yes 230
North End of Coulon Park
16 LAKE WASHINGTON NO.2 3901 Lake Washington Blvd N 2 6 7.5 3 1150 400 31 WW MTD Yes Yes 230/460
17 LIND AVE. 1801 Lind Avenue S 3 8 5 3 865 780 13 WW/DW Yes Yes 230/460
18 MISTY COVE 5025 Ripley Lane N 2 4 2 3 860 75 10 WW MTD No Yes 230/460
19 SEARS 321 Rainier Avenue S 2 6 5 3 1160 200 30 WW MTD No Yes 230/460
20 SUMMERWIND NE 23rd Street 2 6 2.5 3 1800 375 133 WW MTD Yes 230/460
21 SUNSET NE Sunset Blvd&Union Ave NE 2 6 15 3 1755 500 70 WW/DW No Yes 230/460
22 TALBOT CREST 2515 Talbot Crest Drive S 2 4 5 3 1750 50 96.6 PE No Yes 230/460
23 UNION 600 NE 5th St and Union Ave NE 2 4 2 3 1750 100 24 WW MTD Yes Yes 230/460
System Analysis and Results
2. LIFT STATION NO. 2 - AZALEA LANE
The Azalea Lane Lift Station is located on the east side.of Aberdeen Ave NE, south of NE 24th
St. This facility is a fiberglass, wet well mounted, duplex lift station with a duplex vacuum
priming system and serves the communities east of the lift station. The lift station is in good
condition and has proven to be reliable although it experiences periodic flooding. An overflow
pipe connects the storm sewer system to the lift station wet well. As a result, during peak storm
events the lift station is required to pump both wastewater and stormwater. The City will
examine stormwater problems in this area as part of the Comprehensive Storm and Surface Water
Management Plan. One alternative being considered is to construct a stormwater interceptor to
serve this area. This lift station will be taken off-line and removed when wastewater from this
area is diverted by gravity through the future East Kennydale Interceptor.
3. LIFT STATION NO. 3 - BAXTER
The Baxter Lift Station is located in the J.H. Baxter and Co. pole yard near NE 44th Street
adjacent to the railroad tracks. This facility is a recessed, wet well mounted, duplex lift station
with a duplex vacuum priming system. The station serves the mill, owned by the J.H. Baxter
and Company, and the community along the lake north of NE 44th Street. The lift station is in
good condition and has proven to be reliable. There is a creosote smell in the lift station
originating from wastewater generated at the mill. Access to this facility is through the pole yard
and is made difficult during rainy periods.
4. LIFT STATION NO. 4 - BOEING
The Boeing Lift Station is located on the northeast corner of N. 8th Street and Park Avenue N.
This facility is a duplex, wet well/dry well lift station and serves the Boeing facilities adjacent
the lift station. The lift station is in generally good condition but has poor access and requires
a hoist to remove the manhole cover for access. This lift station will be eliminated by
constructing a gravity sewer north along Park Avenue N. to METRO's East Side Interceptor in
conjunction with the reconstruction of this street.
5. LIFT STATION NO. 5 - COTTONWOOD
The Cottonwood Lift Station is located west of the Riviera Apartments, south of the Maple
Valley Highway. This facility is a recessed, wet well mounted, duplex lift station. This facility
serves the area between the Maple Valley Highway and the Cedar River, east of the Stoneway
concrete facilities. The lift station is dangerous and needs to be replaced. The coatings of the
mechanical equipment and dry-well walls are in poor condition. The wet well has an overflow
bypass to the Cedar River. However, during high river stages, river water can flow into the wet
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CHAPTER FIVE
well. As a result, a valve has been installed on the bypass and is manually closed by operation
and maintenance personnel during periods of expected, high river levels.
6. LIFT STATION NO. 6 - DENNY'S
The Denny's Lift Station is located on the east side of Lake Washington Boulevard next to the
Denny's restaurant. This facility is a fiberglass, wet well mounted, duplex lift station with a
duplex vacuum priming system. This facility serves the Denny's restaurant, is in good condition
and has proven to be reliable; however, mechanical equipment needs to be repainted. The lift
station does experience some problems due to grease discharges from the restaurant and flooding
during peak storm events.
7. LIFT STATION NO. 7 - DEVIL'S ELBOW
The Devil's Elbow Lift Station is located at the unimproved intersection of NE 27th Street and
120th Place SE adjacent to Honey Creek. This facility is a wet well mounted, duplex lift station
with a duplex vacuum priming system which is housed in a fiberglass building. The lift station
is in fair condition, but is susceptible to vandalism even though the site has a chain-link fence
because of its remote location. pumps have had problems holding their prime and the mechanical
equipment needs to be repainted. A portion of the force main needs to be replaced due to soil
creep along NE 27th Street. This lift station will be taken off-line and removed when the Honey
Creek Interceptor and May Valley Interceptor are completed.
The Devil's Elbow Lift Station was designed in conjunction with the Honey Creek Interceptor
in 1986. According to the Engineering Report, the lift station was intended to be an interim
facility until the May Valley Interceptor was constructed. The Honey Creek Interceptor was
designed to meet saturation flow conditions from the Honey Creek Basin. However, according
to the Engineering Report, the Devil's Elbow Lift Station was designed to meet existing
conditions and not to provide a log-term solution for this subbasin.
Each pump within the Devil's Elbow Lift Station is designed for 450 gallons per minutes. The
Devil's Elbow Lift Station pumps into the Kennydale Subbasin near the intersection of Edmonds
Avenue NE and NE 27th Street. It was determined that wastewater discharged from this lift
station would adversely impact the gravity sewers in the Kennydale Subbasin. For this reason,
all sewers that were adversely impacted were up-sized in order to handle this additional 450
gallons per minute. In addition a lock-out was put on the Devil's Elbow Lift Station so that both
lift station pumps would not pump simultaneously.
In recent years, the configuration within the Honey Creek Subbasin has become increasingly
problematic. The Devil's Elbow Lift Station was designed to alleviate capacity problems which
existed in 1986; increased development within this subbasin has resulted in higher peak
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System Analysis and Results
wastewater flow rates, causing additional stress to both the Sunset and Devil's Elbow Lift
Stations. During peak storm events, wastewater at the Devil's Elbow Lift Station has overflowed-
into Honey Creek.
The pump lock out at Devil's Elbow Lift Station is an additional problem. If a pump within this
facility was signaled to operate, but could not because of a malfunction, the pump lock-out would
prevent the second pump from taking over. The City maintenance crews can only find out about
this problem after the high level alarm at the lift station has been activated.
Before further developments occurs in this subbasin, a study should be undertaken to determine
alternative to improve system capacity within all of the facilities affected by this deficiency.
8. LIFT 'STATION NO. 8 - EARLINGTON SCHOOL
The Earlington School Lift Station is located on the southwest side of S. Langston Road between
S 132nd Street and S 134th Street. This facility is a duplex wet well/dry well lift station with
an 8-inch overflow bypass. This facility serves the Earlington Elementary School which is
located outside the City limits. The lift station is in good condition, but has poor access and is
difficult to keep clean due to its location on the gravel shoulder. The lift station will be taken
off-line and removed when wastewater from this area is diverted by gravity through the future
Renton Avenue Interceptor.
9. LIFT STATION NO. 9 - EAST VALLEY
The East Valley Lift Station is located on the northwest corner of the intersection of SW 34th
Street and the East Valley Road. This facility is a duplex wet well/dry well configuration with
a single vacuum priming system. This facility serves the commercial areas north and west of the
lift station. The lift station is in generally poor condition. The above-grade electrical enclosures
have experienced vandalism, even though the site is enclosed in a chain-link fence. Lift station
walls and mechanical equipment need to be repainted. The single vacuum priming system does
not allow complete redundancy; this means that the lift station will not operate if there is a
failure of the vacuum priming system. Since this lift station is considered to be permanent, it
is recommended that this lift station be rehabilitated to make it more reliable.
10. LIFT STATION NO. 10 - FALCON RIDGE
The Falcon Ridge Lift Station is located at the east end of SE 8th Street in the plat of Falcon
Ridge. 'This facility is a fiberglass enclosed, wet well mounted, duplex lift station with a duplex
vacuum priming system, which is in good condition and has proven to be reliable. This lift
station will be taken off-line and removed after the development of the Parker property and
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CHAPTER FIVE
completion of the Falcon Ridge Interceptor. Wastewater will then flow by gravity directly to
METRO's Cedar River Interceptor.
11. LIFT STATION NO. 11 - HIGHGATE
The Highgate Lift Station is located on the south side of NE 20th Street between Jones Avenue
NE and Aberdeen Avenue NE. This facility is a fiberglass enclosed, wet well mounted, duplex
lift station with a duplex vacuum priming system. It serves the communities along NE 20th
Street. This lift station will be taken off-line and removed when wastewater from this area is
diverted by gravity through the future extension of West Kennydale Interceptor.
12. LIFT STATION NO. 12 - HONEY CREEK
The Honey Creek Lift Station is located on the south side of NE 17th Place,near the eastern cul-
de-sac. This facility is a recessed wet well mounted duplex lift station with centrifugal pumps.
This facility can serve the plat of Honey Creek Park. It is in poor condition and has been placed
on standby since the construction of the Honey Creek Interceptor. Pump No. 2 is still
operational. However,Pump No. 1 is not operational. The lift station could be placed back into
operation, if required.
13. LIFT STATION NO. 13 - HONEYDEW
The Honeydew Lift Station is located in the middle of Union Avenue NE just north of NE 7th
Street. This facility utilizes two, non-clogging, submersible pumps. This facility serves the
communities north of the Kiwanis Park and Honeydew School along Union Avenue NE. The
lift station is in fair condition. However, because it is located in the middle of Union Avenue,
traffic control must be set up to access the lift station. The lift station will be taken off-line and
removed when the wastewater from this area is directed by gravity through future developments
to the east. These developments, i.e., the Orchards, should be required to plan for the diversion
of wastewater from this lift station through their property. Honeydew Lift Station cannot be
taken off-line until the completion of the East.Renton Interceptor.
14. LIFT STATION NO. 14 - LAKE WASHINGTON BEACH
The Lake Washington Beach Lift Station is located in the parking lot at Coulon Beach Park.
This facility is a duplex wet well/dry well lift station which serves the restroom facilities at the
park. The lift station is in good condition. The pumps have become blocked regularly as a result
of hand towels being flushed down the toilets. To eliminate this problem the Parks Department
has installed hand dryers in the restrooms at the park.
•
5-22
System Analysis and Results
15. LIFT STATION NO. 15 - LAKE WASHINGTON FLUSH
The Lake Washington Flush Lift Station is located at the south end of Mountain View Avenue
North. The facility is a submersible, non-clogging pump for pumping lake water into the gravity-
sewer along the Kennydale lakefront for flushing purposes. The low-pressure sewer then
discharges into Lake Washington No. 2 Lift Station. The lift station is in fair condition and is
reliable. This section of sanitary sewer should be studied separately and alternatives developed,
which may eliminate the need for this flush station.
16. LIFT STATION NO. 16 - LAKE WASHINGTON NO. 2
The Lake Washington No. 2 Lift Station is located at the north end of the Kennydale Beach Park
Road. This facility is a fiberglass enclosed, wet well mounted, duplex lift station with a duplex
vacuum priming system. This facility serves lakefront properties west of the railroad tracks in
the Kennydale area. The lift station is in poor condition. The check valve and shut-off valve
are located in the wet well and are experiencing severe corrosion. The ladder in the wet well is
dangerous because the supports have corroded to the point of structural failure. This lift station
should be replaced.
17. LIFT STATION NO. 17 - LIND AVENUE
The Lind Avenue Lift Station is located on the west side of Lind Avenue SW near the
intersection with SW 19th Street. This facility is a triplex, wet well/dry well lift station which
serves the commercial and industrial areas in the vicinity of the lift station. The lift station was
upgraded to a triplex station in 1983 and is in good condition. The above-grade, motor-control
center should be enclosed in a vandal-proof enclosure for security reasons.
18. LIFT STATION NO. 18 - MISTY COVE
The Misty Cove Lift Station is located on the west side of Ripley Lane North in the plat of Misty
Cove. this facility is a recessed, wet well mounted, duplex lift station with a duplex vacuum
priming system. This facility serves the lakefront properties west of the railroad tracks in the
May Creek area. The lift station is in good condition. A hoist is required to remove the
manhole cover for access into the lift station. The Misty Cove Lift Station pumps to the Baxter
Lift Station which has smaller wet well. For this reason a lockout has been placed on the Misty
Cove Lift Station, which is engaged when the high level alarm at the Baxter Lift Station is
activated.
5-23
CHAPTER FIVE
19. LIFT STATION NO. 19 - SEARS
The Sears Lift Station is located in the parking lot behind Diamond Lil's restaurant in the Renton
Center. This facility is a recessed, wet well mounted, duplex lift station which serves the
commercial areas in the Renton Center. The lift station is in fair condition; however, the
electrical wiring is in poor condition. The bubbler tube is located in the access port into the lift
station and is easily damaged. Access to the lift station is congested during business hours. This
lift station should be either replaced or rehabilitated.
20. LIFT STATION NO. 20 - SUMMER WIND
The Summer Wind Lift Station is located in a fenced, storm-drainage retention area located off
the cul-de-sac on NE 23rd Street. This facility is a fiberglass enclosed, wet well mounted, duplex
lift station with a duplex vacuum priming system. This facility serves the east half of the plat
of Summer Wind. The lift station is in good condition and has proven to be reliable.
21. LIFT STATION NO. 21 - SUNSET
The Sunset Lift Station is located on the southeast corner of the intersection of NE Sunset
Boulevard and Union Avenue NE. the facility is a duplex wet well/dry well lift station with an
overflow wet well and an overflow bypass to the Honey Creek Interceptor. This facility serves
the Honey Creek Basin east of Union Avenue NE. The lift station is in fair condition, but does
experience a grease buildup problem in the overflow wet-well which requires periodic cleaning.
Further, the lift station is undersized for the area served. During storms, both pumps are required
to run together. Excess wastewater is diverted to the Honey Creek Interceptor. The integrity of
the force main, which was originally installed in 1963, is questionable. The lift station will be
taken off-line and removed when the Honey Creek Interceptor and May Valley Interceptor are
completed.
22. LIFT STATION NO. 22 - TALBOT CREST
The Talbot Crest Lift Station is located on the west side of Talbot Crest Drive. This facility is
a dual, pneumatic ejector, lift station with an 8-inch overflow bypass. This facility serves the
plat of Talbot Crest. The lift station is in good condition and has proven to be reliable. The lift
station has a tendency to collect condensation in the air chamber which must be removed
periodically. The lift station can be eliminated by constructing a gravity sewer west across SR
167 or possibly south to the Talbot Road Interceptor.
5-24
System Analysis and Results
23. LIFT STATION NO. 23 - UNION 600
The Union 600 Lift Station is located on the northeast corner of the intersection of Union Avenue
NE and NE 5th Street. This facility is a fiberglass enclosed, wet well mounted, duplex lift
station with a duplex vacuum priming system. This facility serves the apartment complexes
along NE 5th Street and pumps to the Maplewood Subbasin. The lift station is in good condition
and has proven to be reliable. The lift station will be taken off-line and removed when the
gravity sewer is completed to NE 4th Street.
24. PRIVATE LIFT STATIONS
There are also privately owned and maintained lift stations within the City's service area:
Lift Station Location Owner
• Pelly Avenue North near North 7th . Boeing Company
• Rainier Avenue near NW 6th Airport Utility
• 148th Avenue SE opposite North 10th (Apollo School) King County Water
District No. 90
• East of Kennydale Elementary Private Development
• Puget Drive near Rolling Hills Private Development
• Tukwila Lift Station near METRO plant City of Tukwila
New private lift stations must meet city standards and be required to have a maintenance
agreement with the City. This agreement would allow the city maintenance crews to service
these private lift stations, at the owner's expense, when neglect has resulted in a health hazard.
E. TELEMETRY AND CONTROL SYSTEM
Accurate information that details the flow rates in the collection system and trunk lines is
paramount to successful system operation and planning. Most of the operation issues, and all of
the planning elements, are driven by and based on the flow rates in the pipelines. Without
accurate flow rate information, flow rate assumptions must be made based on population
estimates and industry standard assumptions about per capita sewage contribution, and infiltration
and inflow. The accuracy of an analysis is limited if it is based on assumptions only, rather than
accurate wastewater flow rate data. To illustrate the importance of accurate flow rate, the
following planning and design issues are directly based on flow rates:
• The sizes of the pumps in each lift station are based,on maximum flow rates in the
influent sewer mains.
5-25
CHAPTER FIVE 1
• Collection system, trunk mains, and forcemains are based on maximum flow rates from
the contributing areas.
• Lift station wet well volumes are based on expected influent flow rates and projected
emergency reaction times.
• Pump run set points are based on providing maximum pump cycle times without allowing
the stored sewage to become septic. These are based on influent and pumping flow rates.
• The priority and schedule within which facilities are replaced is based on the flow rate
capacity of the facility compared with the actual flow rate in the system. Facilities which
are operating at or above capacity are replaced first, followed by facilities that are closest
to maximum capacity.
• Actual system flow rates can be compared with the per capita contribution and pipe
material and age to develop relationships between flow rate and population density.
Without these relationships, large safety factors must be added to industry standard ratios
for per capita flow rates. These, unnecessarily, increase costs or limit development.
Without these system-specific ratios,it is also impossible to accurately predict overloaded
facilities before the overload shows as surcharged manholes or overflowing wet wells.
Renton's existing sanitary sewer system operates without accurate flow rate information and
without adequate maintenance management information. The flow rate data used to develop and
calibrate the system-wide computer model was based on industry standards for per-capita flow
and land use designations. Although we believe these values are conservative, it is impossible
to identify to what extent they are above actual system flow rates. Undoubtedly, they are more
conservative in some areas than in others. This lack of real and accurate data has diminished the
ability to identify all potential problem areas, and to develop the most efficient and most cost
effective capital improvement program.
To date, the operating staff has reacted to system emergencies as they occur,: rather than
preventing emergencies through an organized, adequate maintenance schedule. To the credit of
the maintenance staff, they have performed well with the information available. It would be
impossible to improve the maintenance program without additional maintenance management and
flow rate information. A properly designed and maintained telemetry and control system includes
the following features:
Alarm Abnormal Events
Provide Engineering Information
Provide Maintenance Information
React to System Emergencies
5-26
System Analysis and Results
Reduce Operating Costs
Provide a Convenient Storage Media
Schedule Maintenance Tasks
Improve Safety
Each of these features is discussed in detail below.
1. ALARM ABNORMAL EVENTS
Although most sanitary sewer telemetry systems include some alarm information, the following
alarms are required for the system to provide the maintenance information necessary to optimize
system operation.
High wet well level
Low wet well level
Pump fail (each pump)
Low pump flow rate
Power fail
Fire alarm
Telemetry fail
Hazardous gas detection
Water in the dry well
Personnel panic alarm
Intrusion alarm
2. EMERGENCY INFORMATION
Emergency information necessary from the telemetry system must include the influent flow rate
to each lift station. This is a calculated quantity based on the length of time it takes to fill a
known volume in the wet well. The influent flow rate should be reported as a maximum,
minimum, and average value. Pump flow rate is provided by installing an electro-magnetic
flowmeter on the discharge side of the pumps. Although doppler ultra-sonic meters are
commonly used for this purpose, their reliability and calibration are not capable of providing the
precise information necessary. Since each pump discharges through the same flowmeter on
alternating cycles, the flow rate difference (difference in pump output) can be used to alarm a
pump that is partially plugged or that has worn significantly. The alarm features and flow rate
capability of the telemetry system can also be used to identify facilities with a higher than
average failure history and to calculate and optimize pump start and stop set points. Pump set
points should be calculated to maximize the interval between pump starts, while still maintaining
adequate storage reserves in the wet well. These levels should be allowed to automatically
5-27
CHAPTER FIVE
change throughout the day to optimize pump run times. In addition, the telemetry system should
track and store flow rate trends to be used for engineering and planning purposes.
3. MAINTENANCE INFORMATION
The telemetry system must automatically track and display pump efficiency at each lift station.
This is accomplished by measuring flow rate and electrical current and calculating the efficiency
of each pump cycle.
The maintenance staff uses pump efficiency to identify pumps that are near the end of their
service life and need to be replaced, or pumps that are plugged or partly plugged and need
service attention. In addition, the system should continuously monitor, calculate and display the
high level response time at each wet well in the system. The response time continuously varies
depending on the influent rate and the volume above the alarm level in the wet well, and it is
useful in determining the sequence of reactions to multiple high level alarms. During a multiple.
alarm episode, the staff can respond to the wet well with the shortest, high level response time.
The failure history of each lift station should be monitored to identify recurring problems or
chronic failure sites. This information is then used to identify frequency of maintenance per site
and when facility replacement is due.
4. REACT TO SYSTEM EMERGENCIES
The telemetry system should be configured to automatically react to some system emergencies.
For example, lift stations in series should be locked out if a receiving lift station has a high level F-!
alarm. If an overflow is unavoidable, the station that causes the least damage should be allowed
to overflow first to provide additional reaction time for maintenance personnel. Low-flow
detection should cause the second pump to start, therefore, providing standby pumping without
waiting for a high level alarm. Multiple failures or alarms occurring simultaneously can be
prioritized by the telemetry system based on holding capacities and overflow damage potential
in order to direct maintenance personnel to the most critical sites first. An intelligent callout
system can direct on-duty personnel directly to the necessary lift station without the need to go
to the central control panel first, thus, saving emergency response time. An automatic gas
detection system can be used to alert operating personnel of a hazardous condition before they
enter the lift station facility.
5. REDUCE OPERATING COSTS
Operating costs can be reduced by a properly configured telemetry and control system. A central
display of lift station and collection system operating data can be monitored by a single person
during high system stress conditions to react to problems or emergencies before they are alarmed.
The system can be used to alarm pumps that are operating at low efficiency, and the pump run
5-28
System Analysis and Results
times and starts can be monitored to identify components that need repair or replacement. This
database can be used with the City's existing maintenance program to develop failure history at
each lift station and to identify a "mean time between failures" for Renton's system. Efficiency
can also be compared with flow rates and failure histories to develop pump start and stop set.
points that optimize pump run times and minimize pump operating costs. The data logging
features of the telemetry system can be used to perform data collection that is currently
accomplished manually, which will allow maintenance personnel to concentrate on maintenance
and operation tasks.
6. CONVENIENT STORAGE MEDIA
A computer telemetry system provides an efficient media for storing operating data, management
and engineering data, and maintenance information. In order for the data to be most useful, it
must be time stamped and stored in ASCII text format. This allows any historical period to be
recalled and imported into City standard spreadsheet programs for manipulation. Data, which
is summarized or condensed before it is stored, loses resolution and the ability to be manipulated _
to develop engineering and maintenance relationships. The storage format should be compatible
with the water telemetry system so that the equipment can be interchanged and one system used
as a backup to the other.
7. SCHEDULE MAINTENANCE TASKS
Any telemetry system should be compatible with the City's existing maintenance management
system, and the database should be configured to provide real-time operating information to the
maintenance system. Pump maintenance should be based on the total running time of each pump
and the number of starts of each pump. This information is available through the telemetry
system. Each lift station and each pump combination has its own characteristic maintenance
requirements. Some pumps may require maintenance every 1,000 hours others every 15,000
hours depending on the service and duty conditions in each facility. Real time operating
information can provide the maintenance system with the proper data to develop the necessary
maintenance requirements at each site. This procedure results in the most efficient use of the
maintenance staff's time and reduces overall operating costs. In addition, it eliminates the most
frequent sources of equipment failures.
8. IMPROVE SITE SAFETY
The telemetry system should continuously monitor hazardous gases in the dry well and alert
operating personnel of unsafe conditions. A personnel panic alarm at each site should be used
for added operator safety. A central reporting of the occupied lift stations allows the maintenance
managers to locate and track the maintenance crews for added safety and reliability.
5-29
CHAPTER FIVE
9. EXISTING TELEMETRY SYSTEM
The City currently owns and operates an analog, signal-based alarm reporting system,
manufactured by Stead & Baggerly of Bellevue, Washington, which monitors each lift station.
The system includes a master console that is located in the City Shops, and a remote telemetry
transmitter located in each lift station.
The master console is in continuous contact with most lift stations via dedicated telephone wires
and circuits. Telemetry tone transmitters in each lift station report the operating status of the lift
station pumps and alarm events. The following data is telemetered and displayed at the Master
Console:
Component Status
Pump 1 Run
Pump 2 Run
Wet Well High Level Alarm
Station Power Fail
Alarm conditions are transmitted to on-call maintenance personnel using automatic telephone
dialer.
Although this system has operated reliably, it does not generate the information necessary to
optimize operation of the lift station facilities and the collection system. The leased telephones i
are expensive and are not regularly maintained by the telephone company. The existing system
is not easy to troubleshoot or repair, and must be maintained by an independent contractor. The
current system does not measure or record flow rate, includes no redundancy, has no data
logging, no maintenance management information, and no control capability.
10. PROPOSED SYSTEM IMPROVEMENTS
The Renton Sanitary Sewer System needs a new comprehensive Telemetry and Data Logging
System. The system should be used by the engineering staff to verify or modify the flow rate
assumptions made in this plan and to identify additional improvements necessary. The
maintenance staff will use the system to reduce costs, improve reliability and increase safety.
The new system must be digital, signal-based, using a high security, binary coded decimal for
telemetry transmission. The system should run on IBM compatible computers and use smart
remote telemetry units at the lift stations and collection system monitoring points. Telemetry
should be a combination of leased telephone line and radio transmission, with the radios being
the preferred transmission media. Because the lift stations are often located at the bottom of
5-30
' I
1
•
System Analysis and Results
drainage basins, radios may not work at all sites. These sites should use leased telephone lines
for data transmission instead of radios.
Control of the facilities should be accomplished in a distributed format, wherein the control
computer provides pump run setpoints that are based on optimal,pump operating conditions, and
r
also locks out various lift stations during high-level alarms from various downstream lift stations.
All other control is initiated from the Remote Telemetry Unit, including pump start/stop from the
level transducer, back-up pump control from the float switches and station alarms.
The system should use strain-gauge, level transducers that are suspended in the wet well for
primary pump control, and use float switches for back-up pump control in the event of transducer
failure. Pump discharge flow rates should be measured using an electro-magnetic flowmeter.
Influent flow rates do not need to be measured directly, but rather can be mathematically
synthesized by measuring the time it takes to fill a known volume of the wet well.
The engineering and system status information that is presented at the City Shops should also be
displayed in real time format at City Hall using a networked data logger computer. This will
allow the engineering and planning staff access to system information without disrupting the
maintenance staff.
The computer and data storage system should be compatible with the existing water data logger
to provide redundant data storage and to provide hot standby fail over controllers. The system
should also be integrated with the existing maintenance management system to provide real time
operating,data and failure history data to the maintenance system.
Each remote telemetry unit, located in each lift station, should include intelligent telephone dialer
alarm systems, so that critical alarms can be relayed to on-duty maintenance personnel, even
during a telemetry system failure.
Telemetry and control should be provided at each lift station in the system, and at strategically
located, collection system flow-metering points. A pre-design report should be developed in
conjunction with the telemetry system replacement design to identify the number and location
of flow metering stations.
F. WASTEWATER QUALITY
The quality of wastewater transported in the Renton sanitary sewer system varies considerably
depending on the wastewater source, detention time within the sanitary sewer system and the
volume of infiltration and inflow. This chapter discusses several aspects of wastewater quality
and will recommend measures to control or eliminate wastewater quality problems.
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I �
I !
CHAPTER FIVE
1. DOMESTIC WASTEWATER
The quality of domestic wastewater varies and is a direct result of the type of water used within
the home. Some domestic sewage can be considered stronger than others. One household
appliance, the garbage disposal, can greatly impact the quality of wastewater. Most new home
construction incorporates garbage disposal in its design. Use of these garbage disposals increases
both suspended solids and the biochemical oxygen demand (BOD), two common results tested
for when measuring contaminant concentrations. A second major determinant of quality of
wastewater is the volume of infiltration and inflow into the sewer system. High rates of
infiltration and inflow will tend to dilute the contaminant concentration of the wastewater.
2. INDUSTRIAL WASTE
Industrial wastes deserve special attention because they can exhibit a wide variety of chemical
constituents. The total volume of industrial waste produced within the City of Renton is small
compared with the volume of domestic wastewater. However, an industrial or commercial
development can have a considerable impact on the sanitary sewer collection system immediately
downstream of the facility. Industrial waste can contain high concentrations of chemicals which
can make the waste highly corrosive or toxic. A list of the industries located within the City of
Renton is provided in TABLE V-2.
If discharge of an industrial waste to the sanitary sewer system creates problems, then
pretreatment of the industrial waste should be considered. Several federal and state regulations
govern the pretreatment of industrial waste.
Several industries within the City have obtained National Pollution Discharge Elimination
Systems (NPDES) permits as noted in TABLE V-2. The City should assume that those who
require permits have them and should rely on the Department of Ecology to fulfill its monitoring
responsibilities. According to Department of Ecology records, no violations of NPDES permits
involving sanitary sewer discharges have been reported recently.
5-32
I r
System Analysis and Results
TABLE V-2: COMMERCIAL AND INDUSTRIAL WASTEWATER PRODUCERS
INDUSTRIES ADDRESS PERMITS WASTES
Boeing Airplane N 8th and Logan N NPDES Chemicals
Company WA0002992
Dotz Chemical 113 S Tillicum Detergents
Products
Florillo Northwest 100 Blaine Ave. NE Chemicals
Acme Processing, 600 SW 7th Street NPDES High BOD Solids
Inc. WA0023116
J.H. Baxter and 5015 Lake Chemical Solids
Company Washington Blvd. N
Pacific AGRO 903 Houser Way N Chemicals
Corporation
Service Linen 903 S 4th Street Detergents
Supply High Temperature
Valley General 400 S 43rd Street Medical Wastes
Hospital
3. WASTEWATER QUALITY PROBLEMS
A major problem associated with wastewater quality is the generation of hydrogen sulfide that
occurs during wastewater transport from its source to the point of treatment. The hydrogen
sulfide found in wastewater results from the anaerobic bacterial reduction of the sulfate ions that
are present. Hydrogen sulfide poses three serious problems: it is highly corrosive, has an
obnoxious odor, and as a gas is toxic to humans and has been known to cause death to sewer
maintenance workers. The production of hydrogen sulfide is directly related to the biochemical
oxygen demand (BOD) of the wastewater. Wastewater exhibiting a high BOD will tend to
generate more hydrogen sulfide than wastewater exhibiting a lower BOD; therefore, excessive
infiltration and inflow will tend to reduce the production of hydrogen sulfide in the wastewater.
Hydrogen sulfide is very corrosive to both sewers and pumping facilities. Hydrogen sulfide
released from the wastewater will tend to dissolve on condensation within the crown of a sanitary
sewer. The hydrogen sulfide retained in the condensation is converted to sulfuric acid through
oxidation by aerobic bacteria. This sulfuric acid will react with the cement bonding material
5-33
CHAPTER FIVE
failure. Sanitary sewer pipes are most susceptible to this type of corrosion in their crowns
because that is where most condensation occurs.
Effects of hydrogen sulfide can be controlled by aeration, periodic cleaning, and use of
noncorrosive pipe materials. If excessive hydrogen sulfide production is evident at a lift station,
aeration of the wet well should be considered to reduce the hydrogen sulfide in the wastewater
and reduce the effects of anaerobic bacteria which produce the hydrogen sulfide. Periodic
cleaning of the sanitary sewers will also remove the biological slime that forms on the pipe walls
and produces the hydrogen sulfide. The most effective method of mitigating corrosion by
hydrogen sulfide is through the use of noncorrosive pipe materials, such as polyvinyl chloride
(PVC), or high density polyethylene (HDPE). Existing pipes experiencing severe corrosion can
be rehabilitated through the use of various slip form liners or fiberglass resin liners.
In order to control the generation of hydrogen sulfide, the City's maintenance crews routinely
flush and clean sewer pipes with inadequate slopes. In addition, all pipes are cleaned before
video inspection is performed. Both of these tasks reduce biological growth on the walls of the
sewer pipes and reduce the hydrogen sulfide generation potential.
5-34
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CHAPTER VI
RECOMMENDED IMPROVEMENTS
A. INTRODUCTION
This chapter presents the proposed improvements to the Renton sewer system that are necessary
to correct existing deficiencies and accommodate growth. The costs of the improvements and
a schedule for implementing them are also included.
This Capital Improvements Program is designed, along with the entire comprehensive plan, to
be used as a guideline in preparing the capital improvements project list during each yearly
budget process. This plan is deliberately intended to be flexible by allowing incorporation of
necessary changes that might arise. Many of the proposed improvements are considered to be
preventive in nature, i.e., the improvement is intended to happen before a specific facility has
failed, a far more desirable process than trying to replace facilities after they fail. Since it is
impossible to estimate when a facility will fail, the process of identifying those facilities which
are at risk and planning corrective measures must continue.
B. CIP RANKINGS
The complexity of the City's wastewater utility system requires a method that systematically
determines which improvements should be undertaken sooner than others. To assign rankings
to the planned improvements, each one was analyzed according to these general categories:
Substandard Facility, System Efficiency, Environmental Protection. Each category was
further divided into four or more kinds of improvements or standards. Each of these
subcategories was assigned a number of points, with the rule that no one improvement could be
given more than eight points in any of the three categories. For each subcategory, each proposed
project was given one point if it provided the benefit described and two points if it provided a
solution to an acute problem. The higher the number of points an improvement received, the
greater its benefit, or the greater its ability to meet certain standards or policies. This systematic
ranking will help direct resources and activities to the appropriate projects.
1. SUBSTANDARD FACILITY
A facility qualifies as substandard if it is unreliable, is structurally deteriorating or has hydraulic
capacity problems. A project received points if it resulted in the following improvements to a
substandard facility:
POINTS: 1-2 Reduces or eliminates hydraulic capacity problems.
1-2 Replaces a deteriorating facility or corrects a structural problem.
6-1
CHAPTER SIX •
1-2 Improves system reliability (i.e., prevents discharge of raw sewage
to any waters, or reduces the potential backup of raw sewage into
basements, streets, or other properties).
1-2 Corrects occupation hazard (i.e., reduce dangers to maintenance
workers).
Maximum Number of Points: 8
2. SYSTEM EFFICIENCY
A project can improve the efficiency of the system if it results in a reduction of operation and
maintenance costs. Examples of such projects include wastewater flow rate modeling and
elimination of lift stations. A project received points for system efficiency if it met any of the
following conditions:
POINTS: 1-2 Involves improving lift station operation or efficiency.
1-2 Involves the elimination of a lift station.
1-2 Reduces infiltration and inflow.
1-2 Improves understanding and planning of sewer system.
Maximum Number of Points: 8
3. ENVIRONMENTAL PROTECTION
An improvement helps protect the environment if it reduces damage to it, or reduces the threat
to the public health. Examples of deficiencies that such projects improve include: failing septic
tanks or sewage overflows into lakes or streams. An improvement received points for
environmental protection if it met any of the following conditions:
POINTS: 1-2 Eliminates septic tanks.
1-2 Improves protection of the public health and safety.
1-2 Improves protection of the environment (i.e., land, wetlands,
streams, groundwater).
2 Helps protect Zone 1 of Aquifer Protection Area.
1 Helps protect Zone 2 of Aquifer Protection Area.
Maximum Number of Points: 8
The results of the systematic ranking are presented in TABLE VI-1. After completion of the
ranking analysis, the projects were sorted and statistically divided into quartiles (fourths). The
first quartile (Quartile I) were those projects with rankings above the 75th percentile. The second
quartile (Quartile II) were those projects with rankings between the 50th and the 75th percentiles.
The third quartile (Quartile III) were those projects with rankings between the 25th and the 50th
6-2
Recommended Improvements
TABLE VI.1: RANKING SUMMARY OF PROPOSED IMPROVEMENTS
PROJECT PROPOSED CAPITAL IMPROVEMENTS Substandard System Environmental Total QUARTILE
NUMBER Facilities Efficiency Protection Ranking
• MAY CRRFK BASIN
1.1 Devil's Elbow Lift Station Rehabilitation 4 1 5 10 I
1.2 Devil's Elbow Forte Main Repair 4 1 S 10 I
1.3 May Valley Interceptor,Section 2" 6 2. 6 14 I
1.4 Honey Creek Interceptor,Phase IV 6 2. 6 14 I
1.5 Sierra Heights Sewer System Construction 2 1 7 10 I
1.6 Sunset Lift Station Elimination 5 1 - 4, 10 I
1.7 Devil's Elbow Lift Station Elimination 4 1 4 9 II
1.8 Misty Cove and Baxter Lift Station Rehabilitation 2 1 1 4 IV
1.9 Denny's Lift Station Rehabilitation 1 1 2 N
1.10 May Valley Interceptor,Section 3 1 1 2 4 N
1.11 Summer Wind Lift Station Elimination 1 1 2 4 N
J.OWER CEDAR RIVER BASIN
2.1 East Renton Interceptor 4 2 5 11 I
2.2 Interim Moratorium Area Improvements 4 2 5 11 I
2.3 Cottonwood Lift Station Replacement 6 2 6 14 I
2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) 5 2 6 13 I
2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) 5 2 6 13 I
2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) 4 1 4 9 II
2.7 Highlands Sewer Replacement,Phase III 3 1 3 7 II
2.8 South Highlands Interbasin Transfer 4 3 7 II
2.9 Honeydew Lift Station Elimination 3 1 3 7 II
2.10 Union 600 Lift Station Elimination 2 1 3 6 III
2.11 Falcon Ridge Lift Station Elimination 2 1 3 6 III
2.12 NE 7th Place Sewer Replacement 2 3 5 IV
LAKE WASHINGTON EAST BASIN
3.1 Lake Washington No.2 Lift Station Replacement 5 2 3 10 I
3.2 West Kennydale Interceptor 2 1 5 8 H
3.3 Highlands Sewer Replacement,Phases I&II 5' 1 3 9 II
3.4 Highgate Lift Station Elimination 3 1 3 7 II
3,5 East Kermydale Interceptor 2 1 4 7 II
3.6 Azalea Lane Lift Station Elimination 2 2 3 7 II
3.7 Kermydale Lakefront Sewer System Study 3 1 2 6 III
3.8 Park Avenue Interceptor 3 1 2 6 III
3.9 Boeing Lift Station Elimination 3 1 2 6 ID
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) 3 1 2 6 III
- 3.11 North Renton Sewer Replacement,Phase H(Logan/Wells) 3 1 2 6 III
BLACK RIVER BASIN
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) 4 1 4 9 U
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) 3 1 3 7 H
4.3 Talbot Crest Lift Station Elimination 3 1 2 6 III
4.4 SW 34th Street Interceptor Replacement 2 1 2 5 N
4.5 East Valley Lift Station Rehabilitation 2 1 2 S N
4.6 Lind Avenue Lift Station Rehabilitation 2 1 2 5 IV
4.7 Talbot Road Interceptor Replacement 2 1 2 5 N
LAKE WASHINGTON WEST BASIN
5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) 4 1 2 7 U
52 Renton Avenue Interceptor 2 1 1 4 IV
5.3 Earlington School Lift Station Elimination 3 1 2 6 III
5.4 Sears Lift Station Replacement 2 1 2 5 N.
5.5 Airport Lift Station Rehabilitation 2 2 4 N
DUWAMISH ESTUARY BASIN
6.1 IBlack River Interceptor 1 1 N
SYSTEM WIDE IMPROVEMENTS
7.1 , Telemetry and Data Logging System Replacement 3 2 2 7 II
72 Infiltration and Inflow Testing and Monitoring Annual
7.3 Existing Sewer Grouting Annual
7.4 Miscellaneous Sewer Replacement Annual
6-3
CHAPTER SIX
percentiles. The fourth quartile (Quartile N) were those projects with ranldngs below the 25th
percentile.
These project ranldngs cannot be used solely to prepare the Capital Improvement Program. The
project rankings do not take into consideration engineering judgment or scheduling of dependent
projects. Engineering judgment involves the trained observation of non-quantifiable impacts of
a project. The scheduling of projects involves determining which projects must be completed
before other projects can begin. For these reasons, the project ranking is best used as one of
many tools to establish a Capital Improvement Program. TABLE VI-2,presents the project
priority along with brief comments regarding any inconsistency between the project quartile and
the project priority.
C. CAPITAL IMPROVEMENT DESCRIPTIONS
•
A list of all the proposed capital improvements, organized by drainage basin, follows. A brief
description of the specific system deficiency and its improvement are included.
System improvements are presented in this chapter in the following order:
• A list of each proposed improvement by basin with a brief description of the
criteria used, the estimated current cost of the improvement,and the recommended
years for construction.
• A summary of improvements by priority (TABLE VI-3).
• A summary of improvements by project type (TABLE VI-4).
• A summary of the estimated project costs and a schedule for implementation.
(TABLE VI-5A & VI-5B).
• A summary of funding sources for each proposed improvement (TABLE VI-6A
& VI-6B)
In addition, the recommended improvements are shown in plan view in FIGURE 8.
6-4
Recommended Improvements
TABLE YI.2: PROPOSED LMPROVEMENTS PRIORITY SUMMARY BY BASIN
PROJECT PROPOSED CAPITAL IMPROVEMENTS QUARTILE PRIORITY COMMENTS
NUMBER
MAY CREEK B4STN
LI Devil's Elbow Lift Station Rehabilitation I A
1.2 Devil's Elbow Force Main Repair I A
1.3 May Valley Interceptor,Section 2 I A
1.4 Honey Creek Interceptor,Phase IV • - I B .,,. Dependent on Project 1.3
1S Sierra Heights Sewer System Construction . I B Dependent on Projects 1.1 and 1.2
1.6 Sunset Lift Station Elimination I D Dependent on Projects 1.3 and 1.4
1.7 Devil's Elbow Lift Station Elimination II D Dependent on Projects 1.3 and 1.4
1.8 Misty Cove and Baxter Lift Station Rehabilitation IV F
1.9 Denny's Lift Station Rehabilitation IV F
1.10 May Valley Interceptor,Section 3 IV 0 Dependent on Project 1.3
1.11 Summer Wind Lift Station Elimination IV G Dependent on Projects 1.3 and 1.8
LOWER CEDAR RIVER BASIN
2.1 East Renton Interceptor I A
2.2 Interim Moratorium Area Improvements I A
2.3 Cottonwood Lift Station Replacement I A
2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) I A
2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) I C Dependent on Project 2.4
2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) II E Dependent on Projects 2.4 and 2.5
2.7 Highlands Sewer Replacement,Phase III II B
2.8 South Highlands Interbasin Transfer U B
2.9 Honeydew Lift Station Elimination II C Dependent on proposed development ..
2.10 Union 600 Lift Station Elimination UI F Dependent on Project 2.1
2.11 Falcon Ridge Lift Station Elimination III F Dependent on proposed development
2.12 NE 7th Place Sewer Replacement IV F
LAKE.WACHT' TO'FAST BASIN
3.1 Lake Washington No.2 Lift Station Replacement I A
3.2 Wen Kennydale Interceptor U A Project in progress
3.3 Highlands Sewer Replacement,Phases I&II U B
3.4 Highgate Lift Station Elimination U B Dependent on proposed development
3.5 East Kennydale Interceptor II C Dependent on other City improvements
3.6 Azalea Lane Lift Station Elimination U D Dependent on Project 3.5
3.7 Kennydale Lakefront Sewer System Study III C
3.8 Park Avenue Interceptor , III C
3.9 Boeing Lift Station Elimination III E Dependent on Project 3.8
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) III E
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) III F
JTACKFRN
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) U A Performed during I-405 work
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) U B
4.3 Talbot Crest Lift Station Elimination UI C
4.4 SW 34th Street Interceptor Replacement IV . D
4.5 East Valley Lift Station Rehabilitation IV D
4.6 Lind Avenue Lift Station Rehabilitation IV E
4.7 Talbot Road Interceptor Replacement IV E _
JAKE WASHTNCCTON WEST B&SIN
5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) II B
5.2 Renton Avenue Interceptor IV F
5.3 Earlington School.Lift Station Elimination III F Dependent on Project 5.2
5.4 Sears Lift Station Replacement IV F
5.5 Airport Lift Station Rehabilitation IV F
DUW AMIS V ESTUARY BASIN
6.1 'Black River Interceptor IV F _
SYSTEM WIDE IMPROVEMENTS
7.1 Telemetry and Data Logging System Replacement II B
7.2 Infiltration and Inflow Testing and Monitoring Annual
7.3 Existing Sewer Grouting Annual
7.4 Miscellaneous Sewer Replacement Annual
6-5
CHAPTER SIX
1. MAY CREEK BASIN
Devil's Elbow Lift Station Rehabilitation
System Deficiency: Construction of the Devil's Elbow Lift Station was completed in
1986. However, significant mechanical difficulties have made the lift station unreliable.
In addition, excessive vandalism has occurred due to the lift station's remote location.
During peak, wet-weather flows, the Devil's Elbow lift station has overflowed into Honey
Creek. The lift station operation must be made more reliable and the facility must be
made more resistant to vandalism.
Improvement: Correct mechanical problems with lift station in order to meet current
design standards.
CIP Project No. 1.1 Cost: $167,000 Priority A
Beginning: 1991 Completion: 1991
Devil's Elbow Force Main Repair
System Deficiency: Northeast 27th Street has been closed to automobile traffic due to
the unstable side slopes of the Honey Creek ravine. The force main for the Devil's
Elbow Lift Station, which is located on NE 27th Street has the potential of structural
failure if the side slopes supporting the roadway were to deteriorate further.
Reconstruction of several sections of the force main is required to increase its reliability.
Improvement: Correct instability problems with force main to ensure reliability.
CIP Project No. 1.2 Cost: $75,000 Priority A
Beginning:, 1991 Completion: 1991
6-6
Recommended Improvements
May Valley Interceptor, Section 2
System Deficiency: The May Valley Interceptor is a facility that is proposed to be
constructed by METRO to serve the sewerage needs of this basin. Section 1 of the Mayr
Valley Interceptor has been constructed from METRO's East Side Interceptor under
Interstate 405 to Jones Avenue NE. Section.2 would extend south along Jones Avenue
NE which parallels May Creek to Honey Creek. At this time METRO intends to
construct Section 2 of the May Valley Interceptor. However, the City may need to take
the initiative to construct the May Valley Interceptor, Section 2, if METROS schedule
does not coincide with the City's needs. Construction of Section 2 of the May Valley
Interceptor is necessary to complete the Honey,Creek Interceptor and eliminate the need
for the Sunset and Devil's Elbow Lift Stations. The May Valley Interceptor, Section 2,
would require approximately 5,400 lineal feet of 24-inch gravity sewer.
Improvement: Construct gravity sewer service in the May Creek Basin to Honey Creek
CIP Project No. 1.3 Cost: $1,448,000 Priority A
Beginning: 1991 Completion: 1993
Honey Creek Interceptor, Phase.IV
System Deficiency: Phases I through III of the Honey Creek Interceptor were completed
in 1986. However,frequent mechanical problems with the Devil's Elbow Lift Station and
structural problems with the Devil's Elbow force main require that a long-term solution
be developed for this basin. The solution is the completion of the Honey Creek
Interceptor,Phase IV,which would provide a gravity interceptor from the existing Devil's
Elbow Lift Station down to the mouth of the Honey Creek. In conjunction with this
project, the May Valley Interceptor, Section 2, must be completed. Honey Creek
Interceptor, Phase IV, would require approximately 2,700 lineal feet of 12-inch gravity
sewer.
Improvement: Complete construction of the. Honey Creek Interceptor in order to
eliminate the Devil's Elbow and Sunset Lift Stations.
CIP Project No. 1.4 Cost: $945,000 Priority B
Beginning: 1992 Completion: 1993
6-7
CHAPTER SIX
Sierra Heights Sewer System Construction
System Deficiency: The Sierra Heights area includes residential developments located
both inside and outside the City limits. Increased septic system failures have prompted
the King County Health Department and the City of Renton to examine providing sanitary
sewer service to this residential area. Wastewater from this area would discharge into the
Honey Creek Interceptor. This project should not be completed until improvements are
made to the Devil's Elbow Lift Station and force main. The Sierra Heights sewer system
would require approximately 8100 lineal feet of 12-inch and 8-inch gravity sewer.
Improvement: Construct sanitary sewers to replace failing septic systems.
CIP Project No. 1.5 Cost: $1,920,000 Priority B
Beginning: 1992 Completion: 1994
Sunset Lift Station Elimination
System Deficiency: After completion of Section 2 of the May Valley Interceptor and
Phase IV of the Honey Creek Interceptor, the Sunset Lift Station can be placed on
standby.
Improvement: Place lift station on standby after completion of the Honey Creek
Interceptor.
CIP Project No. 1.6 Cost: $50,000 Priority D
Beginning: 1994 Completion: 1995
Devil's Elbow Lift Station Elimination
System Deficiency: After completion of Section 2 of the May Valley Interceptor and
Phase IV of the Honey Creek Interceptor, the Devil's Elbow Lift Station can be
eliminated. This would require full dismantling of the existing lift station facilities. The
existing force main will remain in place.
Improvement: Disassemble and remove existing lift station after completion of Honey
Creek Interceptor.
CIP Project No. 1.7 Cost: $50,000 Priority D
Beginning: 1994 Completion: 1995
6-8
Recommended Improvements
Misty Cove and Baxter Lift Station Rehabilitation
System Deficiency: Misty Cove Lift Station currently pumps into the Baxter Lift Station.
which pumps into the METRO Sewer. It may be possible to eliminate one of these lift,.
stations by providing gravity sewer from the Baxter Lift Station to Misty Cove. The
Misty Cove Lift Station has sufficient wet well volume to accommodate this change.
Improvement: Improve operation, safety, and reliability of these lift stations.
CIP Project No. 1.8 Cost: $450,000 Priority F
Beginning: 1996 ' Completion: 1998
Denny's Lift Station Rehabilitation
System Deficiency: The Denny's Lift Station experiences problems including excessive
grease buildup in the wet well and periodic flooding during intense storms. Rehabilitation
of the station should be done to provide greater protection and increased reliability.
Improvement: Improve operation, safety, and reliability of this lift station.
CIP Project No. 1.9 Cost: $70,000 Priority F
Beginning: 1996 Completion: 1996
2. LOWER CEDAR RIVER BASIN
East Renton Interceptor
System Deficiency: The East Renton Interceptor is currently in the planning stages. Its
purpose is to eliminate capacity problems within the existing sanitary sewer systems in
the South Highland, Maplewood and Heather Downs subbasins. The planning and
construction of this interceptor is in direct response to an enactment of a Sanitary Sewer
Moratorium by the City Council under Resolution No. 2764. Upon completion of the
preliminary design and environmental impact statement, a preferred alignment will be
selected for final design and construction. The selected interceptor alternative could
require as much as 12,300 lineal feet of gravity sewer and possibly the construction of
a major sewage lift station.
Improvement: Resolve capacity limitations in the South Highlands, Maplewood and
Heather Downs subbasins by building the East Renton Interceptor.
CIP Project No. 2.1 Cost: $4,445,000 Priority A
Beginning: 1989 Completion: 1992
6-9
CHAPTER SIX
Interim Moratorium Area Improvements
System Deficiency: Capacity problems exist in the South Highlands, Maplewood and
Heather Downs Subbasins. As a result of the Sanitary Sewer Moratorium in those areas,
the City Council directed the Public Works Department to investigate potential areas for
interim improvements that could alleviate existing capacity problems within these
subbasins. The City is currently investigating several interim improvements.
Improvement: Investigate interim improvements as a means of alleviating of existing
capacity problems in the South Highlands, Maplewood and Heather Downs Subbasins.
CIP Project No. 2.2 Cost: $332,000 Priority A
Beginning: 1990 Completion: 1991
Cottonwood Lift Station Replacement
System Deficiency: The Cottonwood Lift Station is in poor condition,is a contamination
threat to the City's aquifer and does not meet current design standards, which include an
overflow bypass of the Cedar River. Since this lift station is located within Zone No. 1
of the Aquifer Protection Area, overflows from this station could contaminate
groundwater. Since this lift station is considered to be permanent, it should be replaced
with a more reliable facility.
Improvement: Replace lift station with a more reliable one.
CIP Project No. 2.3 Cost: $272,000 Priority A
Beginning: 1990 Completion: 1991
Central Renton Sewer Replacement, Phase I (Pelle/Garden)
System Deficiency: These existing sewers are old and were constructed with inadequate
slopes which do not allow self-flushing of the sewer lines. Consequently, maintenance
crews are required to flush these sewer lines approximately once a month. These sewers
also pose a threat to the City's drinking water supply, due to its location within Zone 1
of the Aquifer Protection Area. This project involves the replacement of approximately
3800 lineal feet of existing 8-inch gravity sewer between Pelly Avenue N,Garden Avenue
N, N 4th Street, and N 1st Street.
Improvement: Replace old sewers to reduce the threat of aquifer contamination and to
reduce excessive maintenance.
CIP Project No. 2.4 Cost: $270,000 Priority A
Beginning: 1991 Completion: 1992
6-10
Recommended Improvements
Central Renton Sewer Replacement, Phase II (Williams/Pelly)
System Deficiency: These existing sewers are old and were constructed with inadequate--
slopes which do not allow self flushing of the sewer lines. Consequently, they require
excessive maintenance; crews are required to flush them approximately once a month.
These sewers also pose a threat to the City's drinking water supply, due to its location
within Zone 1 of the Aquifer Protection Area. This project involves the replacement of
approximately 3400 lineal feet of existing 8-inch gravity sewer between Williams Avenue
N, Pelly Avenue N, N 4th Street, and N 1st Street.
Improvement: Replace old sewers to reduce the threat of aquifer contamination and to
reduce excessive maintenance
CIP Project No. 2.5 Cost: $200,000 Priority C
Beginning: 1993 Completion: 1994
Central Renton Sewer Replacement, Phase III (Houser/Factory)
System Deficiency: These existing sewers are old and are located within the Zone No.
1 of the Aquifer Protection Area, thus posing a threat to the City's drinking water supply.
This project involves the replacement of approximately 3200 lineal feet of existing 8-inch
gravity sewer between Factory Avenue N, Houser Way N, and N 4th Street.
Improvement: Replace existing sewers to reduce the threat of aquifer contamination.
CIP Project No. 2.6 Cost: $200,000 Priority E
Beginning: 1995 Completion: 1996
Highlands Sewer Replacement, Phase III
System Deficiency: Older sewers will not accommodate future wastewater flows within
this subbasin. This project involves the replacement of approximately 500 lineal feet of
existing 8-inch gravity sewer along Edmonds Avenue NE between NE 5th and NE 6th
Streets. This project is to be done in conjunction with the overlay of Edmonds Avenue.
The new gravity sewer should be 12-inch in order to accommodate future wastewater
flows.
Improvement: Replace old sewers during street improvement project.
CIP Project No. 2.7 Cost: $51,000 Priority B
Beginning: 1992 Completion: 1993
6-11
CHAPTER SIX
South Highlands Interbasin Transfer
System Deficiency: Capacity problems exist within the South Highlands Basin and could
be alleviated with the replacement and up-sizing of existing sanitary sewers as well as the
construction of additional sanitary sewers. These improvements were identified by RH2
Engineering, P.S., in April 1990 during their investigation of facility improvements for
the South Highlands Sanitary Sewer Basin.
Improvement: Replace and up-size existing sewer and construct new sewers to
optimize existing sewers in this area.
CIP Project No. 2.8 Cost: $300,000 Priority B
Beginning: 1990 Completion: 1991
Honeydew Lift Station Elimination
System Deficiency: The Honeydew Lift Station can be eliminated through the
construction of a gravity interceptor along private property. The sanitary sewer would
require approximately 2600 lineal feet of 8-inch and 12-inch gravity sewer. The
Honeydew Lift Station should be eliminated and the gravity sewer constructed during the
development of these parcels.
Improvement: Disassemble and remove lift station after gravity sewer is provided to
this area.
CIP Project No. 2.9 Cost: $570,000 Priority C
Beginning: 1993 Completion: 1995
Union 600 Lift Station Elimination
System Deficiency: The Union 600 Lift Station can be eliminated through the
construction of a gravity sewer to NE 4th Street. A portion of this gravity sewer has
already been constructed and the remaining section would require approximately 1000
lineal feet of 8-inch gravity sewer. This project should not be completed until the
completion the East Renton Interceptor, which will free up capacity within the Heather
Downs subbasin.
Improvement: Disassemble and remove lift station after completion of gravity sewers
in this area.
CIP Project No. 2.10 Cost: $180,000 Priority F
Beginning: 1996 Completion: 1997
6-12
Recommended Improvements
Falcon Ridge Lift Station Elimination
System Deficiency: This project involves the construction of approximately 2000 lineal,.
feet of 8-inch and 12-inch gravity sewer from the existing lift station to METRO's Cedar -
River Interceptor. This project will be done in conjunction with the development of the:
property between the lift station and the Cedar River.
Improvement: Disassemble and remove lift station after completion of gravity sewers
in this area.
CIP Project No. 2.11 Cost: $700,000 Priority F
Beginning: 1996 Completion: 2000
NE 7th Place Sewer Replacement
System Deficiency: These existing sewers are currently experiencing wastewater flows
that exceed their design capacity. This project involves replacing and up-sizing
approximately 840 lineal feet of existing 8-inch gravity sewer to 12-inch sewer pipe. This
project may not be necessary if the Honeydew Lift Station is eliminated in the near
future. An alternative is to construct a bypass sewer along NE 6th Street as
recommended in the RH2 Engineering, P.S., investigation of the South Highlands Basin.
Improvement: Replace existing sewer to eliminate existing capacity problems.
CIP Project No. 2.12 Cost: $110,000 Priority F
Beginning: 1996 Completion: 1997
South Highlands Sewer Collection System Replacement
System Deficiency: The existing collection system within the South Highland subbasin
was constructed in the early 1940s and is comprised of 8-inch concrete sewers which are
approaching the end of their useful life and need to be replaced before structural failures
occur. This project involves the replacement of approximately 34,000 lineal feet of
existing gravity sewer.
Improvement: Replace existing collection system between NE 3rd Street,NE 7th Street,
Monroe Avenue NE, and Sunset Avenue NE.
CIP Number: 2.13 Cost: $6,800,000 Priority: G
Beginning: 2001 Completion: 2005
6-13
CHAPTER SIX
3. LAKE WASHINGTON EAST BASIN
Lake Washington No. 2 Lift Station Replacement
System Deficiency: The lift station, a wet well, mounted duplex, is in poor condition,
does not meet current standards, and is dangerous to maintain. The check valve and shut-
off valve are located in the wet well and are experiencing severe corrosion. In addition,
the ladder in the wet well is dangerous because its supports have corroded to the point
of structural failure.
Improvement: Replace lift station.
CIP Project No. 3.1 Cost: $250,000 Priority A
Beginning: 1991 Completion: 1992
West Kennydale Interceptor
System Deficiency: The West Kennydale Interceptor is currently under construction and
is expected to be completed in 1991. This interceptor can potentially serve a large
portion of the Kennydale subbasin. The West Kennydale Interceptor is approximately
1750 lineal of 8-inch gravity sewer.
Improvement: Provide gravity sewer service to a currently unsewered area.
CIP Project No. 3.2 Cost: $ 420,500 Priority A
Beginning: 1989 Completion: 1991
Highlands Sewer Replacement, Phases I & II
System Deficiency: Concrete sewers have deterioratedto the point of requiring
replacement of them by a new sewer interceptor along Aberdeen Avenue NE, NE 9th
Street, and Harrington Avenue NE between NE 7th Street and NE Sunset Boulevard.
Total sewer construction is approximately 3,500 lineal feet of 12-inch and 15-inch of
gravity sewer. This project is located in Zone 2 of the Aquifer Protection Area.
Improvement: Construct sewer interceptor.
CIP Project No. 3.3 Cost: $460,000 Priority B
Beginning: 1992 Completion: 1991
6-14
Recommended Improvements
Highgate Lift Station Elimination
System Deficiency: After completion of the West Kennydale Interceptor, the Highgate
Lift Station can be eliminated with the construction of approximately 1000 lineal feet of
12-inch gravity sewer. The construction of this gravity sewer will require easements
across private property to the north of this lift station.
Improvement: Disassemble and remove existing lift station through the construction of
a gravity collection sewer.
CIP Project No. 3.4 Cost: $225,000 Priority B
Beginning: 1992 Completion: 1993
East Kennvdale Interceptor
System Deficiency: Currently, the Kennydale Subbasin is currently unsewered or is
served by the Azalea Lane Lift Station. The East Kennydale Interceptor would serve a
major portion of the subbasin. The construction of this interceptor would also allow the :.
elimination of the Azalea Lane Lift Station. The East Kennydale Interceptor would
require approximately 4350 lineal feet of 12-inch and 8-inch gravity sewer.
Improvement: Provide gravity sewer service through construction of a new
interceptor.
CIP Project No. 3.5 Cost: $750,000 Priority C
Beginning: 1993 Completion: 1995
Azalea Lane Lift Station Elimination
System Deficiency: The Azalea Lane Lift Station currently serves the communities east
of Aberdeen Avenue NE and experiences periodic flooding during storm conditions
because of its location. The lift station could be eliminated after the completion of the
East Kennydale Interceptor. The lift station would be fully dismantled,but the force main
would remain in place.
Improvement: Disassemble and remove existing lift station after completion of East
Kennydale Interceptor.
CIPProject No. 3.6 Cost: $50,000 Priority D
Beginning: 1994 Completion: 1995
6-15
CHAPTER SIX
Kennydale Lakefront Sewer System Study
System Deficiency: The Kennydale Lakefront sewer system has several undesirable
operating characteristics: first, this low-pressure sewer main requires a considerable
amount of maintenance which is made more difficult due to its location along the
lakefront. Second, it uses a flush station which pumps water from Lake Washington in
order to flush wastewater to the Lake Washington No. 2 Lift Station. Third, the sewer
system poses a tremendous environmental threat to both the environment and the property
owners adjacent to this system. This study would examine and evaluate alternatives to
improve the operation of this sewer system.
Improvement: Examine and evaluate alternatives for improving system operation in this
area.
CIP Project No. 3.7 Cost: $50,000 Priority C
Beginning: 1993 Completion: 1994
Park Avenue Interceptor
System Deficiency: Currently, gravity sewer service is unavailable to Boeing Facilities.
The Boeing Lift Station could be eliminated by building a new interceptor. The Park
Avenue Interceptor would run north along Park Avenue N from the intersection with N
8th Street to METRO's East Side Interceptor. This interceptor construction is to be done
in conjunction with the resurfacing of Park Avenue N. The Park Avenue Interceptor
would require approximately 2000 lineal feet of 12-inch gravity sewer.
Improvement: Provide gravity sewer service through construction of a new interceptor.
CIP Project No. 3.8 Cost: $500,000 Priority C
Beginning: 1993 Completion: 1994
Boeing Lift Station Elimination
System Deficiency: The Boeing Lift Station currently serves the industrial properties
owned by the Boeing Airplane Company. The construction of- the Park Avenue
Interceptor would allow the elimination of the lift station.by providing gravity sanitary
sewer service to these industrial facilities. The lift station would be fully dismantled, but
the force main would remain in place.
Improvement: Eliminate Boeing Lift Station.
CIP Project : o. 3.9 Cost: $50,000 Priority E
Beginning: 1996 Completion: 1997
6-16
Recommended Improvements
North Renton Sewer Replacement, Phase I (Wells/Park)
System Deficiency: The existing gravity sewers are old, deteriorating and were
constructed with an inadequate slope which does not allow self-flushing of the sewer
lines. Consequently, maintenance crews are required to flush these sewer lines
approximately once a month. In addition, their condition has deteriorated and requires
replacements.
Improvement: The replacement of approximately 2400 lineal feet of existing 8-inch
gravity sewer between N 6th Street, N 4th Street, Wells Avenue N, and Logan Avenue
N.
CIP Project No. 3.10 Cost: $250,000 Priority E
Beginning: 1995 Completion: 1996
North Renton Sewer Replacement, Phase II (Logan/Wells)
System Deficiency: The existing sewers are old and deteriorating and were constructed
with an inadequate slope which does not allow self-flushing of the sewer lines.
Consequently, excessive maintenance is required; consequently maintenance crews flush
these sewer lines approximately once a month.
Improvement: The replacement of approximately 2600 lineal feet of existing 8-inch
gravity sewer between N 6th Street,N 4th Street,Wells Avenue N and Logan Avenue N.
OP Project No. 3.11 Cost: $300,000 Priority F
Beginning: 1996 Completion: 1997
North Highlands Sewer Collection System Replacement
System Deficiency: The existing collection system within the North Highlands subbasin
was constructed in the early 1940s and is comprised of existing 8-inch concrete sewers,
which are approaching the end of their useful life and need to be replaced before
structural failure occurs. This project involves the replacement of approximately 29,000
lineal feet of existing gravity sewer.
Improvement: Replace existing collection system between NE 7th Street, NE Sunset
Boulevard, and Monroe Avenue NE.
CIP Number: 3.12 Cost: $5,800,000 Priority: G
Beginning: 2001 Completion: 2005
6-17
CHAPTER SIX
4. BLACK RIVER BASIN
Renton CBD Sewer Replacement, Phase I (Mill.Avenue)
System Deficiency: This project involves the replacement of approximately 1600 lineal
feet of 8-inch and 12-inch older gravity sewer along Mill Avenue S between S 5th Street
and S 2nd Street. This project is to be done in conjunction with the reconstruction of
Interstate 405.
Improvement: Replace old sewers during I-405 construction.
CIP Project No. 4.1 Cost: $121,000 Priority A
Beginning: 1990 Completion: 1991
Renton CBD Sewer Replacement, Phase II (Logan and Williams Ave.)
System Deficiency: The existing sewers, located on Logan Avenue S and Williams
Avenue S, are old and have deteriorated beyond repair. Sewer replacements would
improve sanitary sewer service to these residential areas.
Improvement: Replacement of approximately 2000 lineal feet of existing 8-inch
gravity sewer which will improve residential sanitary sewer service.
CIP Project No. 4.2 Cost: $260,000 Priority B
Beginning: 1992 Completion: 1993
Talbot Crest Lift Station Elimination
System Deficiency: The Talbot Crest Lift Station, which serves a residential
development along Talbot Crest Drive,does not meet current design standards. Currently,
the emergency overflow for this lift station discharges into the Panther Creek Wetlands
area.
Improvement: This lift station can be eliminated through the construction of a
approximately 1200 lineal feet of 8-inch gravity sewer from the lift station under the East
Valley Freeway to the East Valley Road.
CIP Project No. 4.3 Cost: $350,000 Priority C
Beginning: 1993 Completion: 1995
6-18
Recommended Improvements
SW 34th Street Interceptor Replacement
System Deficiency: This project involves the replacement of approximately 1500 lineal
feet of existing 8-inch gravity sewer. These existing sewers were undersized to
accommodate the area which can be potentially served with this interceptor. The new
interceptor would be 12-inch.
Improvement: Replace existing sewers which are undersized to serve this area.
CIP Project No. 4.4 Cost: $450,000 Priority D
Beginning: 1994 Completion: 1995
East Valley Lift Station Rehabilitation
System Deficiency: The East Valley Lift Station is considered a permanent lift station,
which will serve existing and future commercial developments within a major portion of
the Renton Industrial Subbasin. It does not meet current design codes because it lacks
full redundancy of its vacuum priming system. If the vacuum priming system was to fail,
the lift station would not operate. In addition, the above grade electrical structures have
experienced vandalism.
Improvement: The lift station requires rehabilitation and major modifications to
improve reliability and in order to be upgraded to a permanent lift station.
CIP Project No. 4.5 Cost: $100,000 Priority D
Beginning: 1994 Completion: 1995
Lind Avenue Lift Station Rehabilitation
System Deficiency: The Lind Avenue Lift Station, considered to be a permanent lift
station, was upgraded to a triplex lift station in 1983 and is in good condition. It serves
a major portion of the Renton Industrial Subbasin. However, the above grade electrical
enclosures are susceptible to vandalism.
Improvement: Additional protection should be provided for the electrical enclosures at
this site and modifications made to improve reliability.
CIP Project No. 4.6 Cost: $20,000 Priority E
Beginning: 1995 Completion: 1995
6-19
CHAPTER SIX
Talbot Road Interceptor Replacement
System Deficiency: The existing Talbot Road Interceptor is currently undersized to serve
this basin. These existing 8-inch sanitary sewers should be replaced with 12-inch pipe.
This project involves the replacement approximately 2500 lineal feet of existing gravity
sewer.
Improvement: Replace undersized interceptor with larger interceptor to better serve this
area.
CIP Project No. 4.7 Cost: $750,000 Priority E
Beginning: 1995 Completion: 1997
Scenic Hills Sewer Collection
System Deficiency: The existing collection system within the Scenic Hills area of the
South Renton subbasin was constructed between 1947 and 1949 and is comprised of 6-
inch and 8-inch concrete sewers, which are approaching the end of their useful life and
need to be replaced before structural failures occur. This project involves replacement
of approximately 18,100 lineal feet of existing gravity sewer.
Improvement: Replace existing collection system within the Scenic Hills area.
CIP Number: 4.8 Cost: $3,630,000 Priority: G
Beginning: 2006 Completion: 2008
Talbot Hill Sewer Collection System Replacement
System Deficiency: The existing collection system within the Talbot Hills subbasin was
constructed in 1960 and is comprised of 8-inch and 10-inch concrete sewers, which are
approaching the end of their useful life and need to be replaced before structural failures
occur. This project involves replacement of approximately 20,600 lineal feet of existing
gravity sewer.
Improvement: Replace existing collection system between Lake Avenue S, S 14th
Street, State Route 515, and S 23rd Street.
CIP Number: 4.9 Cost: $4,120,000 Priority: G
Beginning: 2009 Completion: 2010
6-20
Recommended Improvements.
5. LAKE WASHINGTON WEST BASIN
Renton CBD Sewer Replacement, Phase III (S. 4th Street)
System Deficiency: Existing sewers are old and in poor condition. Replacement of these'-
sanitary sewer pipeline would improve sewer service to this residential area.
Improvement: Replacement of approximately 500 lineal feet of 8-inch gravity sewer
along S 4th Street between Morris Avenue S and Burnett Avenue S.
CIP Project No. 5.1 Cost: $184,000 Priority B
Beginning: 1992 Completion: 1993
Renton Avenue Interceptor
System Deficiency: A portion of the West Renton Subbasin is currently unsewered. This -
project would also allow for the elimination of the Earlington School Lift Station. The
Renton Avenue Interceptor would require approximately 5,500 lineal feet of 12-inch
gravity sewer.
Improvement: If this portion of the Renton.Subbasin is annexed, it should be sewered
through the construction of a new sewer interceptor along Renton Avenue S, west of
Rainier Avenue N.
CIP Project No. 5.2 Cost: $1,500,000 Priority F
Beginning: 1996 Completion: 2000
Earlington School Lift Station Elimination
System Deficiency: The Earlington School Lift Station currently serves the Earlington
School near the intersection of S 132nd Street and S Langston Street. Flow from this lift
station is causing capacity problems in the sewer interceptor along W Sunset Boulevard.
The elimination of this lift station will be possible after the completion of the Renton
Avenue Interceptor. The lift station would be fully dismantled, but the force main would
remain in place.
Improvement: Disassemble and remove existing lift station after completion of the
Renton Avenue Interceptor.
CIP Project No. 5.3 Cost: $50,000 Priority F
Beginninfr "000 Completion: 2001
6-21
CHAPTER SIX
Sears Lift Station Replacement
System Deficiency: The Sears Lift Station is in fair condition and does not meet current
design standards for a permanent facility. If it is to be considered permanent, it should
be replaced with a more efficient and reliable facility.
Improvement: Examine the possibility of eliminating this lift station through the
construction of a gravity interceptor south along Rainier Avenue S to the METRO
Interceptor.
CIP Project No. 5.4 Cost: $350,000 Priority F
Beginning: 1996 Completion: 1998
Airport Lift Station Rehabilitation
System Deficiency: The reliability of this facility needs to be improved.
Improvement: Install emergency power connection.
CIP Project No. 5.5 Cost: $20,000 Priority F
Beginning: 1996 Completion: 1996
West Renton Sewer Collection System Replacement
System Deficiency: The existing collection system within the West Renton subbasin was
constructed in 1951 and is comprised of 6-inch and 8-inch concrete sewers, which are
approaching the end of their useful life and need to be replaced before structural failures
occur. This project involves the replacement of approximately 16,500 lineal feet of
existing gravity sewer.
Improvement: Replace existing collection system between S 134th Street, 80th Avenue
S, and SW Sunset Boulevard.
CIP Number: 5.6 Cost $3,300,000 Priority: G
Beginning: 2006 Completion: 2008
6-22
Recommended Improvements
6. DUWAMISH ESTUARY BASIN
Black River Interceptor
System Deficiency: Currently, the Black River Basin is unsewered. Providing service
would require the construction of an interceptor along 68th Avenue S from the METRO
Treatment Plant to Martin Luther King Way S. The Interceptor would require
approximately 6000 lineal feet of 8-inch and 12-inch gravity sewer
Improvement: Construct an interceptor along 68th Ave. S.
CIP Project No. 6.1 Cost: $1,320,000 Priority F
Beginning: 1996 Completion: 1999
7. SYSTEM WIDE IMPROVEMENTS
Replace Telemetry and Data Logging System
System Deficiency: The Telemetry and Data Logging System needs to be replaced. The
phased improvements, beginning in 1992 and ending in 1996, are as follows:
1992 - Predesign and preliminary system design.
1993 - System design and Phase I construction including, master station
computer equipment, and telemetry from eight of the most critical
lift stations in the system.
1994 - Add telemetry to the remainder of the lift stations.
1995 - Add telemetry to key collection system locations
1996 - Develop optimization software.
Improvement: Install a new telemetry and data logging system.
CIP Project No. 7.1 Cost: $675,000 Priority B
Beginning: 1992 Completion: 1996
6-23
I �
_I
CHAPTER SIX
Infiltration and Inflow Testing and Monitoring
i—;
System Deficiency: Project involves performing infiltration and inflow testing to gather
data to help calibrate the existing sanitary sewer computer model. This information can
also be used to schedule grouting activities of existing sewers which is necessary to meet
METRO's requirements for reducing infiltration and inflow.
Improvement: Calibrate existing computer model and direct sewer grouting efforts.
CIP Project No. 7.2 Cost: $1,000,000 Priority: Annual
Beginning: 1991 Completion: 2000
Existing Sewer Grouting
System Deficiency: Old sewers and old sewer grouting contribute to excessive
infiltration into the sanitary sewer system. In order to fulfill METRO's new requirements
for reducing infiltration and inflow, this project is necessary.
Improvement: Grouting of existing sewers.
CIP Project No. 7.3 Cost: $1,000,000 Priority: Annual ,
Beginning: 1991 Completion: 2000 1
Miscellaneous Sewer Replacements
System Deficiency: This project is to replace old sewers with structural problems, which
are within roadways that are scheduled for resurfacing.
Improvement: Identify and replace old sewers.
CIP Project No. 7.4 Cost: $5,000,000 Priority: Annual
Beginning: 1991 Completion: 2000
6-24
Recommended Improvements
D. PROPOSED IMPROVEMENTS BY PRIORITY
TABLE VI-3 provides a summary of all proposed projects divided by their priorities. It is our ...
recommendation that these projects begin in the following schedule:
A - 1991 and Prior
B - 1992
C - 1993
D - 1994
E - 1995
F - 1996 and Future
E. PROPOSED IMPROVEMENT BY PROJECT TYPE
TABLE VI-4 provides a summary of all the proposed projects divided by their project type. The
various typed of projects are listed below:
Lift Station Replacement
Lift Station Rehabilitation
Lift Station Elimination
Existing Sanitary Sewer Replacement
Proposed Sewer System Additions
Miscellaneous Improvements
6-25
CHAPTER SIX
I �
TABLE VI-3: PROPOSED IMPROVEMENTS SUMMARY BY PRIORITY
PROJECT PROPOSED CAPITAL IMPROVEMENTS QUARTILE PRIORITY COMMENTS
NUMBER
PRIORITY A PRO(F('Ti
1.1 Devil's Elbow Lift Station Rehabilitation I A
1.2 Devil's Elbow Force Main Repair I A
1.3 May Valley Interceptor,Section 2 I A
2.1 East Renton Interceptor I A
2.2 Interim Moratorium Area Improvements I A
2.3 Cottonwood Litt Station Replacement I A
24 Central Renton Sewer Replacement,Phase I(Pelly/Garden) I A
3.1 Lake Washington No.2 Lift Station Replacement I A -
3.2 West Kennydale Interceptor II . A Project in progress
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) II A Performed during I-40S work
PRIORITY A PROTECTS
1.4 Honey Creek Interceptor,Phase IV I B Dependent on Project 1.3
1.5 Sierra Heights Sewer System Construction I B Dependent on Projects 1.1 and 1.2
2.7 Highlands Sewer Replacement,Phase III U B
2.8 South Highlands Interbasin Transfer II B
3.3 Highlands Sewer Replacanent,Phases I 8:II U B
3.4 Highgate Lift Station Elimination II B Dependent on proposed development
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) U B
5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) II B
7.1 Telemetry and Data Logging System Replacement II B
PRIORITY C PRO TF('Ts
2.5 Central Renton Sewer Replacement,Phase U(Williams/Pelly) I C Dependent on Project 2.4
2.9 Honeydew Lift Station Elimination U C Dependent on proposed development
3.5 East Kennydale Interceptor II C Dependent on other City improvements
3.7 Kennydale Lakefront Sewer System Study III C
3.8 Park Avenue Interceptor III C
4.3 Talbot Crest Lift Station Elimination III C
PRTORTTY O PRO Tr(-Ts
1.6 Sunset Lift Station Elimination I D Dependent on Projects 1.3 and 1.4
1.7 Devil's Elbow Lift Station Elimination U D Dependent on Projects 1.3 and 1.4
3.6 Azalea Lane Lift Station Elimination U D Dependent on Project 3.5
4.4 SW 34th Sweet Interceptor Replacement IV D
4.5 East Valley Lift Station Rehabilitation IV D
PRIORITY F.PRO WE('TS
2.6 Ce¢al Renton Sewer Replacement,Phase III(Houser/Factory U E Dependent on Projects 2.4 and 2.5
3.9 Boeing Lift Station Elimination III E Dependent on Project 3.8
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) III E 1
4.6 Lind Avenue Lift Station Rehabilitation IV E
4.7 Talbot Road Interceptor Replacement IV E
P21011:17.22130.11-C:=
1.8 May Cove and Baxter Lift Station Rehabilitation IV F
1.9 Denny's Lift Station Rehabilitation IV F
2.10 Union 600 Lift Station Elimination III F Dependent on Project 2.1
211 Falcon Ridge Lift Station Elimination III F Dependent on proposed development
2.12 NE 7th Place Sewer Replacement IV F
3.11 North Recon Sewer Replacement,Phase II(Logan/Wells) III F
5.2 Renton Avenue Interceptor IV F
5.3 Earlington School Lift Station Elimination III F Dependent on Project 5.2
5.4 Sears Lift Station Replacement N F
5.5 Airport Lift Station Rehabilitation IV F
6.1 Black River Interceptor N F
PRIG ORTCG PROTECTS
1.10 May Valley Interceptor,Section 3 N G Dependent on Project 1.3
1.11 Suer Wind Lift Station Elimination N G Dependent on Projects 1.3 and 1.8
2.13 South Highlands Sewer Collection System Replacement 0
3.12 Nath Highlands Sewer Collection System Replacement G
5.6 West Renton Sewer Collection System Replacement G
4.8 Scenic Mils Sewer Collection System Replacement G
4.9 Talbot I ill Sewer Collection System Replacement 0
6-26
Recommended Improvements
TABLE VI-4: PROPOSED DIPROVE.MENTS SL'VC6ARY BY PROJECT TYPE
PROJECT PROPOSED CAPITAL IMPROVEMENTS QUARTILE PRIORITY COMMENTS
NUMBER
LIEL
23 Cottonwood Lift Station Replacement I A •
3.1 Lake Washington No.2 Lift Station Replacement I A
5.4 Sears Lift Station Replacement .. N F
J.1FT ST 4770K RFHAATT IT4TTON
1.1 Devil's Elbow Lift Station Rehabilitation 1 A
4.5 East Valley Lift Station Rehabilitation N D
4.6 Lind Avenue Lift Station Rehabilitation N E
1.8 Misty Cove and Baxter Lift Station Rehabilitation N F
1.9 Denny's Lift Station Rehabilitation N F
• 5.5 Airport Lift Station Rehabilitation IV F •
J TFT STATION FT TMN4TTON
' • 3.4 Highgate Lift Station Elimination U B Dependent on proposed development
2.9 Honeydew Lift Station Elimination • II C Dependent on proposed development
43 Talbot Crest Lift Station Elimination III C
1.6 Sunset Lift Station Elimination I D Dependent on Projects 1.3 and 1.4
1.7 Devil's Elbow Lift Station Elimination II D Dependent on Projects 1.3 and 1.4
3.6 Azalea Lane Lift Station Elimination II D Dependent on Project 3.5
3.9 Boeing Lift Station Elimination III E Dependent on Project 3.8
1.11 Summer Wind Lift Station Elimination N 0 Dependent on Projects 13 and 1.8
2.10 Union 600 Lift Station Elimination m F Dependent on Project 2.1
2.11 Pelona Ridge Lift Station Elimination tII F Dependent on proposed development
5.3 Earliniton School Lift Station Elimination III F Dependent on Project 5.2
EXIC'IT\fi S4'.TTARY cFwFR REPL4CFVFvr
1.2 Devil's Elbow Force Main Repair I A
2.2 Interim Moratorium Area Improvements I A
2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) I A
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) II A Performed during I-405 work
2.7 Highlands Sewer Replacement,Phase III II B •
33 FGghlands Sewer Replacement,Phases I&II II B
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) n B
5.1 Renton CBD Sewer Replacement,Phase IU(S.4th Street) II B
2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) I C Dependent on Project 2.4
4.4 SW 34th Street Intercepter Replacement N D
2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) II E Dependent on Projects 2.4 and 2.5
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) III - E •"
4.7 Talbot Road Interceptor Replacement N E
2.12 NE 7th Place Sewer Replacement IV F
3.11 North Renton Sewer Replacement,Phase II(Logae/Wells) III F
2.13 South Highlands Sewer Collection System Replacement G
3.12 North Highlands Sewer Collection System Replacement G
5.6 West Renton Sewer Collection System Replacement G
4.8 Scenic Hills Sewer Collection System Replacement G
4.9 Talbot Hill Sewer Collection System Replacement G
pROPOSEDStewrRSYSTEM 4DDTT!ONS
1.3 May Valley Interceptor,Section 2 I A
2.1 East Renton Interceptor I A
3.2 West Kennydale Interceptor II A Project is progress
1.4 Honey Creek Interceptor,Phase N I B Dependent on Project 13
13 Sierra Heights Sewer System Construction I B Dependent on Projects 1.1 and 1.2
2.8 South Highlands Interbasin Transfer II B
33 East Kennydale Interceptor II C Dependent on other City improvements
3.7 Kennydale Lakefront Sewer System Study IIT C
3.8 Pak Avenue Interceptor III C
1.10 May Valley Interceptor,Section 3 IV G Dependent on Project 1.3
5.2 Renton Avenue Interceptor N F
6.1 Black River Interceptor N F
MIS('FT.GANEOIIS TMPROVFMF'1T5
7.1 Telemetry and Data Logging System Replacement II B
7.2 Infiltration and Inflow Testing and Monitoring Annual
7.3 Existing Sewer Grouting Annual
7.4 Miscellaneous Sewer Replacement Annual
6-27
CHAPTER SIX
F. PROPOSED CAPITAL IMPROVEMENT PLAN SCHEDULE AND CASH FLOW
TABLE VI-5A - 5B provides an implementation schedule and a cash flow analysis for each
proposed improvement. TABLE VI-6A - 6B provides an estimate of the funding from various
revenue sources. These sources included the following:
City of Renton
Local Improvement Districts (LID)
Grants
Developers
METRO
Other
6-28
TABLE V1-SA: COST BREAKDOWN FOR PROPOSED IMPROVEMENTS
PROJECT PROPOSED CAPITAL IMPROVEMENTS CARRY 1991 1992 1993 1994 1995 1996-2010
NUMBER FORWARD Note: Project coal estimates are In 1990 dollars TOTALS
MAY CREEK B SIN
1.1 Devirs Elbow Lift Station Rehabilitation 3167.000 3167,000
12 Devil's Elbow Force Main Repair 375.000 $75,000
1.3 May Valley Interceptor,Section 2 3268,000 3590,000 3590,000 31,448,000
1.4 Honey Creek Interceptor.Phue IV 3100,000 $845,000 3945,000
1.5 Sierra Heights Sewer System Commotion S100.000 3500,000 31.320,000 $1,920,000
1.6 Sunset Lift Station Elimination
310,000 340,000 $50,000
17 Devirs Elbow Lift Station Elimination $10,000 340.000 550,000
1.8 Misty Cove and Baxter Lift Station Rehabilitation 3450,000 $450,000
1.9 Denny's Lift Station Rehabilitation
370.000 570,000
1.10 May Valley Interceptor,Section 3 33.500.000 33,500,000
1.11 Summer Wind Lift Station Elimination
3500,000 5500,000
LOWER CEDAR RIVER DAMN
2.1 East Renton Interceptor 3350,000 31,445.000 33,000,000 $4,445,000
2.2 Interim Moratorium Area Improvements 3132,000 3332,000 3332.000
2.3 Cottonwood Lift Station Replacement 3272,000 3272,000 3272.000
2.4 Central Renton Sewer Replacement,Phase I(PellylGa n) 37000 3200.000 $270.000
O\ 2.5 Central Renton Sewer Replacement.Phase II
(Williams/I'dly) 550,000 3150,000 5200,000
VD 2.6 Central Renton Sewer Replacement,Phase III(I Iouser/Factory) 350.000 3150,000 $200,000
2.7 highlands Sewer Replacement,Phase III $20,000 331,000 $51,000
2.8 South Highlands Interbuin Transfer 3300.000 3300,000
2.9 Honeydew Lift Station Elimination 320,000 350,000 $200,000 3300.000 $570,000
2.10 Union 600 Lift Station Elimination $180,000 $180,000
2.11 Falcon Ridge Lift Station Elimination
3700.000 $700,000
2.12 NE 7th Place Sewer Replacement
3110,000 S 110,000
2.13 South I lighlands Sewer Collection System Replacement 36.800,000 36,800.000
JAKE WASHINGTON FAST RAW(
3.1 Lake Washington No.2Lift Station Replacement 3250,000 3250,000
3.2 West Kemydale Interceptor 3450,000 3420,500 3420,500 A
3.3 Highlands Sewer Replacement,Phases 1&II 3460,000 3460,000 3460,000
3.4 Highgate Lift Sudan Elimination 325,000 3200,000 3225,000 a
33 East Kemydale Interceptor 350.000 3200,000 $500,000 3750,000 .
3.6 Azalea Lane Lift Station Elimination 310.000 340,000 $50,000 Q.
3.7 Kemydale Lakefront Sewer System Study 325,000 325.000 350.000 a.
.3.8 Park Avenue Interceptor 363.643 S 110,000 3390,000 3500,000 b
3.9 Boeing Lift Station Elimination
350,000 550.000
3.10 North Renton Sewer Replacement.Phase I(Wells/Perk) 397,000 325,000 3225,000 5250.000
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) $300,000 3300,000 a
3.12 NoHighlands Sewer Collection System Replacement $5,800,000 35.800,000 `'
ah
TABLE VI-5B: COST BREAKDOWN FOR PROPOSED IMPROVEMENTS
k -
PROJECT PROPOSED CAPITAL IMPROVEMENTS CARRY 1991 1992 1993 1994 1995 1996-2010
NUMBER FORWARD Note: Project cost estimates are In 1990 dollars. TOTALS
BLACK RIVER B SIN
4.1 Renton CDD Sewer Rq,lacanent,Phase I(Mill Avenue) $121,000 3121.000 3121.000
4.2 Renton CDD Sewer Replacement,Phase II(Logan/Williams) 350.000 3210.000 3260,000
4.3 Talbot Crest Lift Station Elimination 350.000 3150.000 3150.000 3350,000
4.4 SW 34th Street Interceptor Replacement 375,000 $375,000 $450,000
4.5 East Valley Lill Station Rehabilitation $25,000 $75,000 $100,000
4.6 Lind Avenue Lift Station Rehabilitation $20,000 320,000
4.7 Talbot Road Interceptor Replacement $100,000 3650.000 5750,000
4.8 Scenic Ilills Sewer Collection System Replacanent
$3,630,000 $3,630,000
4.9 Talbot!till Sewer Collection System Replacement
34,120,000 54,120,000
J.AKE WASHINGTON WEST BASIN
W 5.1 Renton CDD Sewer Replacement.Phase III(S.4th Street) 330,000 3154,000 $184,000
O 5.2 Renton Avenue Interceptor
31500,000 31,500,000
S 3 fsadington School Lift Station Elimination $50,000 $50,000
5.4 Sean Lift Station Replacement 5350,000 3350,000
53 Airport Lift Station Rehabilitation $20,000 $20,000
5.6 West Renton Sewer Collection System Replacement 33,300,000 33,300,000
DUWAMISHESTUARY BASIN
6.1 Black River Interceptor $1,320,000 $1,320,000
SYSTEM WIDE IMPROVEMENT`
7.1 Telemetry and Data Logging System Replacement 350,000 3250,000 $150,000 $150000 375,000 3675,000
7.2 Infiltration and Inflow Testing and Monitoring 380,000 380,000 380,000 380,000 380,000 380,000 $1,200,000 $1,600,000
7.3 heisting Sewer Grouting 3100,000 3100,000 $100,000 $100,000 3100,000 31,500,000 $2,000,000
7.4 Miscellaneous Sewer Replacement 3200,000 3200,000 3200,000 3200,000 $200000 34,500,000 35.500,000
TOTAL CIP COSTS PER YEAR 32,025,643 33,800,500 35,305,000 $3,465,000 $2,945,000 52,195,000 $41,300,000 $59,010,500
CITY ESTIMATED SIIARE OF OP COSTS 32,464,477 $3,278,781 $2,085,707 31,469,137 $1,559,138 333,038500.343,895,740
TABLE VI-6A: FUNDING SOURCES FOR PROPOSED IMPROVEMENTS
PROJIiCI' PROPOSED CAPITAL IMPROVEMENTS CITY LID GRANTS DEVELOPERS METRO OTIE R TOTALS
NUMBER SHARE Note: Protect cost estimates are In 1990 dollars.
MAY CREEK BASIN
1.1 Devil's Elbow Lift Station Rehabilitation 3100.000 $67,000 3167.000
1.2 Devil's Elbow}force Main Repair 350,000 325,000 375.000
1.3 May Valley Interceptor,Section 2 $434,400 3579.200 3434.400 $1,448,000
1.4 Honey Creek Interceptor,Phase IV $567.000 3378,000 $945,000
IS Sierra}frights Sewer System Construction 3600,000 3600,000 3720,000 31.920,000
1.6 Sumet Lift Station Elimination • 350.000 350,000
1.7 Devil's Elbow Lift Station Elimination 350,000 350,000
1.8 Misty Cove and Baxter Lift Station Rehabilitation $337.500 3112,500 3450,000
1.9 Denny's Lift Station Rehabilitation 370,000 370.000
1.10 May Valley Interceptor.Section 3 31,050,000 31,400,000 31,050.000 33.500,000
1.11 Summer Wind Lift Station Elimination 3500.000 3501,000
;AMER CEDAR RIVER BASIN
2.1 East Renton Interceptor 32,500,000 31.500,000 3445.000 34.445,000
2.2 Interim Moratorium Area Improvements 3132,000 3200,000 3332.000
2.3 Cottonwood Lift Station Replacement $272,000 $272,000
2.4 Corral Renton Sewer Replacrnnent,Phase I(Pelly/Gardcn) 3270,000 3270,000
ch 2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) 3200,000 3200,000
t.'') 2.6 Central Renton Sewer Replacement,Phase III Clouser/Factory) 3200.000 3200,000
~ 2.7 Highlands Sewer Replacement,Phase III 351,000 $51,000
2.8 South Highlands Interbssin Transfer S150.000 S150,000 3300,000
2.9 Ioneydew Lift Station Elimination 3114,000 3456,000 $570,000
2.10 Union 600 Lift Station Elimination $36.000 3144,000 $180,000
2.11 Falcon Ridge Lift Station Elimination 3200,000 3500.000 5700,000
2.12 NB 7th Place Sewer Replacement 355,000 355,000 S110,000
2.13 South Highlands Sewer Collection System Replacement 36,8130,000 36,800,000
JAKE WA.SIIINGTON EASE BASIL
3.1 Lake Washington No.2 Lift Station Replacement 3250.000 3250,000
3.2 West Kanydale Interceptor $315,375 3105,125 3420.500 ,,,:?
3.3 Highlands Sewer Replacement,Phases 1&II 3460,000 5460,000 0
3.4 Highgate Lift Station Elimination S112,500 3112,500 3225,000 3
3.5 East Kemydale Interceptor $750,000 $750,000
3.6 Azalea Lane Lift Station Elimination 350.000 $50,000 re
3.7 Ke nydale Lakefront Sewer System Study 350.000 $50,000 a;
.3.8 Park Avenue Interceptor $500,000 3500,000 .
3.9 Boeing Lift Station Elimination 350,000 350.000 0
3.10 North Raton Sewer Replacement,Phase I(Wells/Park) 3250.000 3250,000 54
3. 11 North Renton Sewer Replacement,Phase II(Logan/Wells) 3300,000 3300,000 cue
3.12 North highlands Sewer Collection System Replacement $5,800,000 35,800,000 s
b
tri
TABLE VI-6B: FUNDING SOURCES FOR PROPOSED IMPROVEMENTS
PROJECT PROPOSED CAPITAL IMPROVEMENTS CITY LID GRANTS DEVELOPERS METRO OTHER TOTALS
NUMBER SHARE Note: Project cost estimates are in 1990 dollars.
BLACKRIV .RB SN
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) $121,000 $121,000
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) $260,000 $260,000
4.3 Talbot Crest Lift Station Elimination $250,000 $100,000 $350,000
4.4 SW 34th Street Interceptor Replacement $450,000 $450,000
4.5 East Valley Lift Station Rehabilitation $100,000 $100,000
4.6 Lind Avenue Lift Station Rehabilitation $20,000 $20,000
4.7 Talbot Road Interceptor Replacement $750,000 $750,000
4.8 Scenic Hills Sewer Collection System Replacement $3,630,000 $3,630,000
4.9 Talbot Hill Sewer Collection System Replacement $4,120,000 $4,120,000
LAKE.WASHIN.TON W tir B SIN
5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) $184,000 $184,000
52 Renton Avenue Interceptor $750,000 $750,000 $1,500,000
53 Harlington School Lift Station Elimination $50,000 $50,000
5.4 Sears Lift Station Replacement $350,000 $350,000
5.5 Airport Lit Station Rehabilitation $20,000 $20,000
5.6 West Renton Sewer Collection System Replacement $3,300,000 $3,300,000
DUWAMISH ESTUARY BASIN
6.1 IBlack River Interceptor $660,000 $660,000 $1,320,000
SYSTEM WIDE IMPROVEMENTS
7.1 Telemetry and Data Logging System Replacement $675,000 $675,000
7.2 Infiltration and Inflow Testing and Monitoring $1,600,000 $1,600,000
7.3 Existing Sewer Grouting $2,000,000 $2,000,000
7.4 Miscellaneous Sewer Replacement $5,500,000 $5,500,000
TOTAL CIP COSTS PER FUNDING SOURCE $44,335,775 $2,110,000 $600,000 $7,110,000 $1,979,200 $2,875,525 $59,010,500
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FIGURE 8
CITY OF RENTON
COMPREHENSIVE SEWER PLAN
PROPOSEDIMPROVEMENTS
SCALE MARCH 24, 1992
SCALE: 1" = 2000'
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III III'
CHAPTER VII
OPERATION AND MAINTENANCE
A. SANITARY SEWER SYSTEM OPERATION
A comprehensive maintenance program allows the City to optimize its use of the existing
collection system and pumping facilities, thereby extracting the maximum life and capacity of
each facility. This permits the same facilities to accommodate greater flow rates and more
system connections while minimizing construction of new facilities. A properly maintained
facility is less likely to fail. This reduces the operating costs of the utility because of lower
damage compensation costs and overtime costs for maintenance personnel. It also protects the
environment and the public health by minimizing sewage overflows.
B. CURRENT OPERATION AND MAINTENANCE PROGRAM
The current operation and maintenance program for the sewer utility is discussed in this chapter.
The operation and maintenance program consists of four elements:
Normal Operations
Emergency Operations
Preventive Maintenance
Staffing
1. NORMAL OPERATIONS
Normal operation of the sanitary sewer utility is a combination of interaction between the
Wastewater Utility Section (located in City Hall) and the Operation and Maintenance Division
(located in the City Shop Facility).
a. ORGANIZATIONAL STRUCTURE
The sewer utility operates under the direction of the Administrator of Planning, Building
and Public Works, Ms. Lynn Guttmann. The Sanitary Sewer Operation and Maintenance
Division is'supervised by Mr. Gary Morrison who reports to the Field Maintenance
, Supervisor, Mr. Jack Crumley. The Wastewater Utility Section is supervised by Mr.
Randall Parsons who reports to the Utility Systems Division Manager, Mr. Richard
Anderson. Mr. Jack Crumley and Mr. Richard Anderson report to Ms. Lynn Guttmann.
The certifications based on successful completion of training courses and examinations
held by the Operation and Maintenance and Engineering staff are listed in TABLE Viii.
Training consists of special courses and seminars specifically designed for the
requirements of sanitary sewer utility employees. The training is offered through such
organizations as the APWA (local section), various trade organizations,local colleges and
7-1
CHAPTER SEVEN
TABLE VII-I: CITY PERSONNEL AND CERTIFICATION
OPERATION AND MAINTENANCE PERSONNEL
POSITION CERTIFICATION RESPONSIBILITIES
Supervisor Wastewater Collection III Oversees and manages sanitary sewer
system operation and maintenance.
Foreman Wastewater Collection I Coordinates maintenance work.
Maint.Worker III Wastewater Collection I Maintenance worker. Primarily
responsible for lift stations.
Mains..Worker III Wastewater Collection I Sanitary sewer maintenance worker.
Mainz.Worker III Wastewater Collection I Sanitary sewer maintenance worker.
Mains..Worker III Wastewater Collection I Sanitary sewer maintenance worker.
Mains.Worker III Wastewater Collection I Sanitary sewer maintenance worker.
POSITION CERTIFICATION RESPONSIBILITIES
Stormwater and Professional Engineer Evenly divides his time between managing
Wastewater Utility projects in the Stormwater and Wastewater
Section Supervisor Utility Sections.
Wastewater Civil Engineer II Manages capital improvement projects
Engineer and reviews City and private sanitary
sewer system additions. --
Wastewater Engineering Specialist II Assists in managing CIP and the
Engineer Comprehennsive Sewer Plan Update.
Administers agreements,side sewer
permits and provides public information.
Manages the Infiltration and-Inflow
Program for the Wastewater Utility
for about 10 percent of his time(other
90 percent of his time is spent with his
regular duties in the stormwater utility).
7-2
Operations and Maintenance
universities; Seattle-King County Health Departments, other sewer utilities, and by
industrial training specialists. Renton's policy of supporting and promoting operator
training should be continued.
As the complexity of the system increases and as the service area expands, the need for
trained, efficient staff to keep pace with public demand and advances in technology will
become imperative. New employees need orientation and basic information, while more
experienced employees can improve by continued training.
Training opportunities are of such importance to effectively operating the system that
Renton has linked them to its overall personnel evaluation program. Employees are
evaluated and promoted through a set of job categories that are increasingly well paid.
It is essential that the promotional program continue to be closely linked with the training
program, not only because it promotes efficient operation, but because mandatory
certification of wastewater utility workers is required by the state. Qualifications and
training requirements for obtaining and maintaining certification are stipulated by the
State Department of Health. The City Council and Administration have approved
expenditures for increased training with the result that improved proficiency levels have
occurred in the last five years.
b. COMMUNICATION
Efficient and economical functioning of a team requires adequate provision for regular,
effective communication among its members. The normal channels of communication
available to maintain effective coordination are:
Vehicular two-way radios
Regularly kept work logs
Regular inspection reports
Daily work assignment meetings
Inventory and other record keeping practices
Emergency phone numbers for "on-call" employees
Direct, City owned telephone connection to City Hall
Weekly staff meetings
The sewer utility does not have a comprehensive system operation manual; however, lift
station facility operation and maintenance manuals are available for staff reference. City
staff have maintained the policy of requiring complete operation and maintenance manuals
for all new equipment and facilities. In addition, we recommend that a system wide
Operations and Maintenance manual, including emergency response procedures, be
prepared and updated on a regular basis.
7-3
CHAPTER SEVEN
c. EQUIPMENT AVAILABILITY
Sewer maintenance staff is equipped primarily with rented equipment. The equipment
available for daily use includes rolling stock, shop tools and incidental equipment as well
as other portable equipment for field use. The vehicles and other rolling stock are listed
in TABLE VII-2 with a description of their primary use in the department. A
description of,each vehicle and its uses is presented below.
The existing inventory appears adequate at current staffing levels but should increase in
proportion to customer increases. The City should examine the backup capabilities of the
inventory, based on critical equipment or facility failure, and make provisions for
additional material procurement on a short notice basis where necessary.
TABLE VII-2: WASTEWATER UTILITY DEPARTMENT EQUIPMENT (1989)
ROLLING STOCK
Vehicle# Year Vehicle Description
C-75 1976 Utility TV inspection unit
D-58 1987 Lift station utility truck
D-51 1987 Manhole and line service truck
E-71 1986 . Aquatech high velocity sewer jet
and vacuum unit
S-91 1976 Mechanical rodding
OTHER EQUIPMENT
Amount Equipment Description
4 Wacker compactors
1 3-inch trash pump
4 Trash diaphragm pumps
1 Chainsaw
1 Set of emergency lighting
1 Emergency generator
7-4
Operations and Maintenance
Utilities T.V. Inspection Unit
Equipment #C-75
This unit is a closed-circuit T.V. system used for inspecting underground utility lines,
primarily sanitary sewer and storm drain lines. It is fully self-contained with a generator,
compressor, and water supply. Its primary use is to determine conditions of existing lines
and any repairs or replacement necessary. The T.V. van is an important part of the
maintenance program to help determine priority areas that require further attention and
maintenance.
Lift Station Utility Truck
Equipment #D-58
This vehicle is used by the lift station crew for inspection, maintenance and repair of
sewer pump stations. It is equipped with a crane used for lifting pumps and equipment
as needed, and utility compartments for parts, tools, etc. This vehicle is also used to
transport the mechanical rodding machine and to assist with other maintenance procedures
as needed.
Manhole and Line Service Truck
Equipment #D-51
This vehicle is used by the line crew for inspection and repair of manholes and lines. It
is equipped with a crane hoist for lifting and setting manhole rings and equipment used
in repair work. It carries parts used in sewer line repair such as couplings, fittings, plugs,
etc. It is also equipped with an auxiliary hydraulic power unit that operates jackhammers,
compactors, and pumps making this vehicle self-contained for exposing and excavation
procedures.
Aquatech High Velocity Sewer Jet and Vacuum Unit Equipment
Equipment #E-71
The Aquatech has a wide variety of uses in the utility maintenance programs. It is
primarily used to clean sewer lines and remove solid debris (i.e.,rocks, silt, dirt) from the
lines that could create flow restrictions and blockages. There are a number of lines in the
City, primarily in the downtown area, that have inconsistent grades creating septic
conditions within the lines. A part of the maintenance program is to use the Aquatech
to flush water through these particular lines periodically to prevent those conditions from
occurring. The Aquatech is the primary equipment used for emergency blockages in the "
lines and is used to assist T.V. inspection by setting cables.
7-5
CHAPTER SEVEN
Mechanical Rodding Machine
Equipment #S-91
The mechanical rodder is used to remove roots and grease that accumulate within sewer
lines creating flow restrictions and blockages. Numerous lines throughout the City have
been examined and discovered to have had a history of problems created by roots and
grease. These particular lines are rodded periodically to ensure there is no interruption
of flow.
d. ROUTINE OPERATIONS
'
Routine operations involve the analysis, formulation, and implementation of procedures
to ensure that the sanitary sewer facilities are functioning efficiently. The utility's
maintenance procedures are good, with repairs being made promptly so customers do not
experience unnecessary inconvenience.
Side sewer maintenance can be a major problem within a sanitary sewer system. Side
sewers are owned and should be maintained by the individual property owners. City
policy is that individual property owners are responsible for maintaining their side sewers.
If a problem occurs, the property owner is to contact a private plumber to investigate and
correct the problem. If the property owner can show that the problem is within the
publicly owned sewer main, then the City will correct the problem and reimburse the
property owner for expenses incurred.
e. RECORDS
Providing time for keeping and maintaining accurate records should be an integral
consideration in determining the time to be allotted to any departmental task. Adequate
records are an essential tool in utility management and operation,providing the supporting
data for operations assessment and long-term planning, while saving time and reducing
difficulty when trouble arises.
The sewer utility has need for several types of records: facility operation, records,
personnel, customer contact, inventory, and facility maintenance and repair. These and
other appropriate documents should be legible, concise, permanent, accurate and
accessible. Their importance to the efficient functioning of the utility is critical.
Up-to-date maps of the sanitary sewer system are important for operation and
maintenance. Changes or additions to the sanitary sewer system should be added as they
occur. The City maintains an updated 1"= 400' scale map of the sanitary sewer system
that is useful to the operations and maintenance staff. These utility maps show the
7-6
Operations and Maintenance
sanitary sewer size and location,manhole location and number,cleanout location, and lift
station and force main locations. As-built drawings of much of the existing sanitary
sewer system are kept on file in the Utility Systems Division at City Hall. This
information is useful in helping the operation and maintenance staff to locate sanitary
sewer lines and service connections from these.drawings. Plat maps or construction
drawings for new sanitary sewer extensions within the distribution system should continue
to be kept for the sanitary sewer system.
2. EMERGENCY OPERATIONS
The City responds to emergencies involving the sanitary sewer system through the use of on-call
personnel. The Sanitary Sewer Department does not have an emergency response plan that
identifies how Renton should react to an emergency. It is recommended that the City prepare
an emergency response plan for the sewer utility. This plan should include the functions and
responsibilities of personnel, procedures to be followed, maps of each facility, contact lists, and
communication procedures. The emergency response procedures should be available both in ..
report form and through a computer program prepared specifically for that purpose. The
emergency response plan should be updated every two years.
C. PREVENTIVE MAINTENANCE
Maintenance schedules that meet or exceed manufacturer's recommendations should be '
established for all critical components in the sanitary sewer system. The following schedule
should be used as a minimum for preventive maintenance:
Sewage Lift Stations
Daily: Observe and record motor current draw; check
packing; log and record pump motor hours; check
motor noise, temperature, vibration.
Weekly: Check security.
Semiannually: Change motor oil.
As Needed: Recoat structures and piping;maintain electrical and
hydraulic controls.
Wet Well Facilities
Weekly: Check security: Check float settings.
Annually: Check interior condition,ladder,hatches,etc.,in wet
well.
As Needed: Recoat interior as needed in wet well (estimated 10-
to 15-year frequency).
7-7
CHAPTER SEVEN
Sanitary Sewer System
Twice Per Week: Check inspection manholes for flow reduction.
Clean lines when flow in sewers is reduced.
Semiannually: Cut roots in sewers with root problems.
Tools & Equipment
1. Rolling Stock
Daily: Check all fluid levels and brakes.
As Needed: Replace fluids and filters in accordance with
manufacturer's recommendations (or more
frequently depending on type of use).
2. Tools
As Needed: Clean after each use; lubricate and maintain as
necessary.
D. STAFFING
The preventive maintenance procedures and normal as well as emergency operations of the utility
are described in the previous sections. The hours of labor and supervisory activity required to
effectively carry out the work of these on-going maintenance and operations schedules and
engineering responsibilities form the basis for determining adequate staffing levels.
1. MAINTENANCE AND OPERATIONS STAFF
The current staff organization is illustrated in TABLE VII-1. There are at present seven
employees,including supervisory personnel and maintenance workers,who operate and maintain
the sanitary sewer system. The tasks that are performed by sewer utility staff include inspection,
testing, installation and repair of system facilities and routine preventive maintenance, record
keeping, administrative tasks, and corrective action required in response to emergencies.
The hours of work required to adequately maintain the sanitary sewer system are shown in
TABLE VII-3. For preventive maintenance alone,the annual hours total 3,589,or 69 crew hours
per week. This requires nearly 2 crew members working full time, i.e., 40 hours per week,
excluding vacation, sick leave, and all other tasks not related to preventive maintenance.
The hours of work required for operational tasks for the sanitary sewer system are shown in
TABLE VII-4. For operational tasks alone, the annual hours total 8,535, or 164 crew hours per
7-8
Operations and Maintenance
TABLE VII-3:STAFFING TIME FOR PREVENTIVE MAINTENANCE
FACIUTYOR FREQUENCY OF QUANTITY IN TIME REQUIREMENT
EQUIPMENT MAINTENANCE SYSTEM TIME PER UNIT PER YEAR
UFTSTATION ANNUALLY 22 La 16 MANHOURS 352 HOURS
MAINTENANCE
SEWAGE PUMP AND ANNUALLY 45 PUMPS 8 MANHOURS 360 HOURS
MOTOR MAINTENANCE
CHECK INSPECTION TWICE PER WEEK 106 MANHOLES 10 MINUTES 1837 HOURS
MANHOLES
ROOT CUTTING SEMIANNUALLY 19200 IF 1500 LF/30 MHRS 768 HOURS
GREASE REMOVAL ANNUALLY 5200 IF 1500 LF/SOMHRS 104 HOURS
UNE FLUSHING ONCE PER MONTH I SET 14 MANHOURS 168 HOURS
TOTAL PREVENTIVE MAINTENANCE 3589 HOURS
TABLE VII-4:STAFFING TIME FOR OPERATION TASKS
TASK TIME PER TIME REQUIREMENT
ACTIVITY FREQUENCY ACTIVITY PER YEAR
UFT STATION DAILY 7 MHRSIDAY 2555 HOURS
INSPECTION
•
VIDEO INSPECTION ONCE PER WEEK 37 MHRSWEEK 1560 HOURS
WORK LOGS DAILY 10 MHRSIDAY 2600 HOURS
VEHICLE INSPECTION DAILY 0.5 MHRSNEHICLE 650 HOURS
STAFF MEETINGS DAILY 0.5 MHRSIDAY 910 HOURS
TOOL AND ONCE PER WEEK 5 MHRSANEEK 260 HOURS
EQUIPMENT CLEANING
TOTAL FOR OPERATIONS 8535 HOURS
7-9
CHAPTER SEVEN
week. This requires more than 4 crew members working full time, i.e., 40 hours per week,
excluding vacation, sick leave, and all other tasks not related to operation of the sanitary sewer
system.
The total operation and preventive maintenance time required is 12,124 hours per year, which
is equivalent to six people working full time, 40 hours per week.
If due consideration is given to the hours involved in vacation, holiday, illness, meetings,
training, on-the-job travel and startup time, then the total number of hours actually available for
performing the work of operation and maintenance diminishes to a level of approximately 1,662
hours per year per crew member. At this rate, a staff of eight full-time maintenance crew
members is necessary to accomplish preventive maintenance and normal operations activities and
respond to emergencies.
This analysis indicates that the Wastewater Utility Operation and Maintenance Department is not
adequately staffed to regularly perform the basic tasks required to provide minimum
recommended maintenance to the system. An expansion of the system requiring new service
connections and/or additional facilities, without enlargement of the staff, will result in increased
neglect of necessary maintenance. In view of predicted population growth in the service area
over the next several years and the growing demand for sanitary sewer service, the need for
additional staffing will continue.
Many arguments support the wisdom of adequate staffing in any work place. The most
persuasive argument relevant to a complex sanitary sewer system is that short staffing causes
preventive maintenance schedules to be neglected. When routine,regular preventive maintenance
tasks are dropped, breakdowns result, increasing both breakdown maintenance and excessive
reliance on expensive standby equipment required to resolve emergencies.
Regular performance of all necessary work in the Wastewater Utility Operation and Maintenance
Division, with the current number of service connections, will require additions to the present
maintenance crew. The expected increase in the number of service connections should serve as
further impetus to develop a staff of an adequate size to effectively operate and maintain the
system.
The size of the maintenance crew should be increased from six to eight personnel while retaining
the supervisor. This addition to the staff will create the adequate number of crew hours
necessary to carry the full work load of the Utility without neglecting preventive maintenance,
emergency preparedness, or safety precautions. Maintenance and technical staff additions should
be accompanied by additions to the clerical, secretarial and other support staff needed to ensure
that record keeping, billing, public relations, communications and other general functions of
support staff are performed with the accuracy and timeliness required.
7-10
Operations and Maintenance
2. WASTEWATER UTILITY ENGINEERING STAFF
The current engineering staff organization is illustrated in TABLE VII-1. Currently the
Wastewater Utility has 2.5 full-time employees (r 1 hs) involved in engineering tasks. The .5
FTE is a supervisor who divides his time equally between the Wastewater and Stormwater
utilities. The engineering staff is responsible for two major tasks, administrative and capital
improvement projects.
The various administrative tasks and the hours of work required are shown in TABLE VII-5.
The number of hours required for each task is not easily defined; therefore,work loads have been
estimated based on a full-time employee (F 1'E). Administrative tasks alone requires
approximately 2.0 FTE's. Therefore, it is evident that the administrative activities require a
major portion of the engineering staff resources.
TABLE VII-5 also shows the capital improvement projects which are currently under way within
the City. These five projects require approximately 0.8 FTE's. The total time required to
perform all the tasks that the City is currently performing is approximately 2.8 rib's, which
corresponds very closely to their current staffing level of 2.5 FTE's.
Most of the capital improvement projects identified in the 1983 Comprehensive Sewer Plan were
not completed. The primary reason for the City's inability to carry out a capital improvement
program is not a lack of available funding, but a past and current lack of engineering staff to
design or manage the projects.
The level of staffing within the City's Wastewater Utility section may be the biggest obstacle to
the implementation of this plan. The proposed capital improvements require that approximately
14 to 16 projects are under way at any one time. Current staffmg levels can only accommodate
approximately four capital improvement projects. In order to implement this plan, additional
staffing of approximately 2.5 FTE's will be required in order to accommodate 14 to 16 capital
improvement projects per year, beginning in 1991. Additional administrative tasks which are
recommended in this plan are (1) prepare new ordinances and revise existing ordinances, (2)
setup and administer grease trap management and certification ordinance, (3) inventory and
update hydraulic computer model, and (4) perform computer analyses using the sewer system
hydraulic model. These tasks will require additional staffmg of approximately 0.5 FTE's. This
will bring the total additional staffing, requirements for both administrative tasks and capital
improvement projects up to 3.0 FTE's, bringing the total wastewater staffing level up to 5.5
FTE's. These additions will likely result in the section supervisor increasing supervision duties
and eliminating project management duties.
7-11
CHAPTER SEVEN
TABLE VII-5: WASTE WATER UTILITY ENGINEERING STAFF TIME
NUMBER OF
ENGINEERING TASKS EMPLOYEES
Section Supervison 0.20 FTE's
Latecomer's Agreement Administration 0.20 FTE's
Sewer Moritorium Administration 0.30 FTE's
Plan Review Support 0.60 FTE's
Comprehensive Sewer Plan Update 0.20 FTE's
Customer Service Support 0.25 FTE's
Support to Other Divisions/Departments/Agencies 0.25 FTE's
TOTAL ADMINISTRATIVE TIME 2.00 FTE's
Major Capital Improvement Projects
East Renton Interceptor 0.20 FTE's
Minor Capital Improvement Progects
West Kennydale Interceptor 0.20 FTE's
Interim Sewer Improvements 0.10 FTE's
Lake Washington Sewer Improvements 0.10 FTE's
Park Avenue Interceptor 0.10 FTE's
Infiltration and Inflow Program 0.10 FTE's
TOTAL CEP TIME 0.80 FTE's
TOTAL ENGINEERING TIME 2.80 FTE's
FTE's=Full Time Employees
Source: Randall Parsons,Stormwater and Wastewater Utility Supervisor
7-12
CHAPTERYHI
NCIAL ANALYI
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4
CHAPTER VIII
FINANCIAL ANALYSIS
A. INTRODUCTION
This chapter considers the financial impacts that the Capital Improvement Plan (CIP),
recommended in Chapters 5 and 6, will have on the wastewater utility's budgeting process. The
proposed wastewater utility CIP consists of the rehabilitation, replacement and new construction
of sewer facilities that are necessary to meet the policy goals stated in Chapter 3, the design
standards and criteria presented in Chapter 4 and the service needs that will result from
anticipated growth.
This chapter also presents a financial analysis of the wastewater utility which identifies its
historical and projected future expenses and compares them to available and projected revenues
in order to determine the necessary rate adjustments.
A utility rate study that evaluated the operation of the 401 and 421 funds and made specific rate
recommendations was completed in November 1989 (Water and Wastewater Rates Managements
Analysis, RH2 Engineering P.S.). This rates management analysis was intended to guide rates
management for a period of two years while a reorganization of the Public Works Department
was taldng place. During the first quarter of 1992, the financial models developed in the rates
management analysis should be updated so that recommended rates can be adjusted to accurately
reflect the current financial situation within the utility.
The utility's financial situation has also changed because of new state laws regarding how fees
and charges must be calculated (Substitute House Bill 2929), and because the City is taking steps
to adjust all of its rates, fees, and charges to meet its projected costs.
In this chapter two sets of numbers are used. Current 1990 dollars are used to project the costs
of operations, maintenance, and capital improvement programs. However, several factors may
affect the accuracy of those projections. The most significant factor is inflation. Although we
cannot predict the exact amount inflation will increase costs, we estimate it will be 5% a year.
Other factors that may affect future costs that we have not included in our cost estimate are
contractor availability, technological advances, and changes in laws and policies.
B. WASTEWATER UTILITY EXPENSES AND REVENUE REQUIREMENTS
There are four major expenses of the wastewater utility, which fall under two broad categories--
operating expenses and actual construction costs for Cl? projects. Operating expenses include
costs for operations and maintenance and METRO charges. Actual construction costs include
the expenses for implementing the CI' and debt service costs. Inflation,defined as a general rise
in prices, affects each of these expenses to a different degree. A summary of the major expenses
of the Wastewater Utility is shown on FIGURE 9.
8-1
CHAPTER EIGHT
A detailed description of each expense is presented below. To determine the revenues needed
to meet each expense, one must forecast future levels of 1) inflation, 2) customer service
increases, 3) METRO rate increases, 4) increases in operations and maintenance costs, 5) the
City's share of costs for financing the CIP,.and 6) anticipated revenues from other sources to
finance the remaining portions of the CIP.
C. OPERATING COSTS AND REVENUES
All operating costs fall into two general categories: 1) The city's operations and maintenance
expenses (controlled by City's budget process) and 2) the METRO sewage treatment charges (no
direct control by the city). A summary of these costs is shown on FIGURES 9 and 10. It is
evident from FIGURE 10 that the majority of the operating costs are a direct result of METRO
changes. The Wastewater Utility rate increase necessary to cover the operating costs is presented
in TABLE VIII-1.
1. MUNICIPALITY OF METROPOLITAN SEATTLE (METRO) CHARGES
METRO charges for wastewater treatment and disposal. As part of its service contract with
METRO, the City collects that charge from its customers through the utility billing division and
passes it on to METRO. METRO has increased its rates substantially and will continue to do
so to meet new treatment requirements. METRO treatment services are forecast to increase at
an average annual rate of 13%.
2. CITY OF RENTON OPERATIONS AND MAINTENANCE
a. COSTS
The estimated costs to operate the wastewater utility include salary costs for the operation,
maintenance, engineering and administration of services, taxes, office supplies, debt
service, and consulting fees.
For eighteen months the wastewater utility has been in transition because of the Public
Works Department's reorganization which separated the wastewater utility from the water
• utility. As part of the reorganization, the number of staff and additional staff positions
for each utility were identified. For purposes of this financial analysis, recommended
staffing levels for operating the wastewater utility were predicted to be reached within a
five-year period in order to keep pace with anticipated growth. Inflation for labor is
estimated to be 5% annually, with an.additional 5% step increase applicable to 50% of
the work force. Other expenses are anticipated to increase at the estimated inflation rate
of 5%.
8-2
Financial Analysis
CITY'S REVENUE BREAKDOWN SUMMARY
FIGURE 9
$4J
Revenue projection requirements based on proposed capital
improvements and operation and maintenance.
s3� -
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...... 1.. ...... ................... ..... :•^:i>.^: i:'iiiii:�i::'ri'•ii'ri:{i$ii: ?:j:j::<:ji;'':?}':`vJ+ri'rii:
20M
1.13M
J
0.96M 0.98M 0.98M 0.99M 1.00M 1.02M
SO
1990 1991 1992 1993 1994 1995
YEAR
INN City Operations =3 City Proposed CIP
8-3
CHAPTER EIGHT
TOTAL REVENUE REQUIREMENT SUMMARY
FIGURE 10
$1, Revenue requirements based on proposed
capital improvements,operation and maintenance,
and METRO revenue forecast.
2.28M
$8 :, •
206M::
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•
c.„:,,,;-.,v Or,:'. Y ko'•}+h,Ax••. i. i `T.!Li:.':• {cG�33 'lam 1 7...•Y.
• r _ ,' }� 4.OM }...r\4r pagraMi3i}7°' �, "•s. �s"4./3*:. .Y il£ I' ' niJ%2'`•f''.••^: ca$2 f. 3 . . miiiiipZ1".,,:.:},`..''c'''t:7
1110111
'• .0.:.•'4',-.1.-?pp?er� $.• ."Jyb. 6,4::" 4:::::;
`Y fF• ,* +FF?. ::,,A xY yC iii•:Y'C{T fD'i')
•;h'y :o „K.:. •e% iv: ` ,}15.F "i+:. ,�',';. 3N::'::J'k.6"uta ""',r"..''s4?"ro3*. :
•
1990 1991 1992 1993 1994 1995
YEAR
I j
®METRO Revenues 111111 City Operation Q City Proposed CIP
TABLE VIII-1: PROJECTED SANITARY SEWER RATE INCREASES FOR A SINGLE-FAMILY
RESIDENCE BASED ON PROPOSED RECOMMENDATIONS IN THIS PLAN
Year • 1991 1992, ' 1993 1994 1995
Projected City
Rate Increases 11.9% 18.1% • 16.9% 9.5% 8.8%
City Charges $7.70 - $9.09 $10.63 $11.64 $12.66
Projected METRO
Rate Increases 18.2% 12.9% - 10.7% 10.0%
METRO Charges $13.20 $15.60 $17.62 $19.50 $21.45
Total Projected
Rate Increase 18.2% 14.4% 10.2% 9.6%
Total Billings $20.90 $24.69 $28.25 $31.14 $34.11
8-4
Financial Analysis
CIP FINANCIAL ANALYSIS SUMMARY
FIGURE 11
Projected expenditures based on proposed
. ., capital improvement plan.
•
$6
-
$5
f
:::::.�:::.�:::::::.,. .i•::•C.Y::..{.iiY::: i:6Yi }:.v:
c
C
U `;`:'' vS<vv
� yY{.:�(iY?ti :\h{iY,:�
U
$3
W .
O C
{
W
Y'.iiiiiiiiY:t{:iii:{:;Y':
•
f.�'ut
a •>
S2"/
';;',".7...;:v:Yr
Inflated CIP Cost
Si
�•:•i:•iii:•i:•'•:•:•:•iY::i i:•:•i:
I
Current
CIP Cost
Share
.......................
..................
..................::....
... ... . . .. Current City Cost
So
1991 1992 1993 1994 1995
YEAR
TABLE VIII-2: RMA AND COMPREHENSIVE PLAN CIP COST COMPARISON
CURRENT COSTS INFLATED COSTS
City's Share City's Share Total Project City's Share City's Share Total Project
of CIP Costs of CIP Costs Costs From of CIP Costs of CIP Costs Costs From
YEAR From RMA From This Plan This Plan From RMA From This Plan This Plan
1991 $1,991,900 $2,464,477 $3,800,500 $2,091,495 $2,587,701 $3,990,525
1992 $3,278,897 $3,278,781 $5,305,000 $3,614,984 $3,614,856 $5,848,763
1993 $3,023,269 $2,085,707 $3,465,000 $3,499,736 $2,414,414 $4,011,084
1994 $2,335,049 $1,469,137 $2,945,000 $2,838,252 $1,785,736 $3,579,648
1995 Not Estimated $1.709.138 $2.695.000 _ Not Estimated $2.181373 $3.439.629
RMA=Rates Management Study Inflated Dollars=Assume 5%annually
Current Costs= 1990 Dollars
8-5
b
TABLE VIII-3A: COST BREAKDOWN FOR PROPOSED IMPROVEMENTS ;tl
PROJECT PROPOSED CAPITAL IMPROVEMENTS CARRY ANNUAL CASH FLOW TOTAL
ti
NUMBER FORWARD 1991 1992 1993 1994 1995 1996-2010 COST
PRIORITY A PRO 1't:S
1.1 Devil's Elbow Lift Station Rehabilitation $167,000 $167,000
1.2 Devil's Elbow Force Main Repair $75,000 $75,000
13 May Valley Interceptor.Section 2 $268,000 $590,000 $590,000 $1,448,000
2.1 East Renton Interceptor $350,000 $1,445,000 $3,000,000 $4,445,000
2.2 Interim Moratorium Area Improvements $132,000 $332,000 $332,000
2.3 Cottonwood Lift Station Replacement $272,000 $272,000 $272,000
2.4 Central Renton Sewer Replacement.Phase I(Pelly/Garden) $70,000 $200,000 $270,000
3.1 Lake Washington No.2 Lift Station Replacement $250,000 $250,000
3.2 West Kesmydale Interceptor $450,000 $420,500 $420,500
4.1 Renton CBD SewerReplacement,Phase I(Mill Avenue) $121.000 $121,000 $121,000
'PRIORITY B PROJECTS
00 1.4 Honey Creek Interceptor,Phase IV $100,000 $845,000 $945,000
O% 1.5 Sierra Heights Sewer System Construction $100,000 $500,000 $1,320,000 $1,920,000
2.7 Highlands Sewer Replacement,Phase III $20,000 $31,000 *51.000
2.8 South Highlands Interbasin Transfer $300,000 $300,000
3.3 Highlands Sewer Replacement,Phases I&II $460,000 $460,000 $460,000
3.4 Highgate Lift Station Elimination $25,000 $200,000 $225,000
4.2 Renton CBD Sewer Replacement.Phase U(Logan/Williams) $50,000 $210,000 $260,000
5.1 Renton CBD Sewer Replacement.Phase III(S.4th Street) $30,000 $154,000 $184,000
7.1 Telemetry and Data Logging System Replacement $50,000 $250,000 $150,000 $150,000 $75,000 $675,000
PRIORITY C PRO JECTS -
2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) $50,000 $150,000 $200,000
2.9 Honeydew Lift Station Elimination $20,000 $50,000 $200,000 $300,000 $570,000
3.5 East Kennydale Interceptor $50,000 $200,000 $500,000 $750,000
3.7 Kennydale Lakefront Sewer System Study $25,000 $25,000 $50,000
3.8 Park Avenue Interceptor $63,643 $110,000 $390,000 $500,000
4.3 Talbot Crest Lift Station I3limimation $50,000 $150,000 $150,000 $350,000
NOTE: Project cost estimates are in 1990 dollars
TABLE VIII-311: COST BREAKDOWN FOR PROPOSED IMPROVEMENTS
PROJECT PROPOSED CAPITAL IMPROVEMENTS CARRY ANNUAL CASH FLOW TOTAL
NUMBER FORWARD 1991 1992 1993 1994 1995 1996-2010 COST
PRIORITY I1PROJECTS
1.6 Samet Lift Station Elimination $10,000 $40,000 $50,000 •
1.7 Devirs Elbow Lift Station Elimination $10,000 $40,000 $50,000
3.6 Azalea Lane Lift Station Elimination $10,000 $40,000 $50,000
•
4.4 SW 34th Strut Interceptor Replacement $75,000 $375,000 $450,000
4.5 East Valley Lift Station Rehabilitation $25,000 $75,000 $100,000
2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) $50,000 $150,000 $200,000
3.9 Boeing Lift Station Elimination $50,000 $50,000
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) $97,000 $25,000 $225,000 $250,000
4.6 Lind Avenue Lift Station Rehabilitation $20,000 $20,000
4.7 Talbot Road Interceptor Replacement $100,000 $650,000 $750,000
pRIOIJ'TY F PROJECTS
1.8 Misty Cove and Baxter Lift Station Rehabilitation $450,000 $450,000
1.9 Denny's Lift Station Rehabilitation $70,000 $70,000
2.10 Union 600 Lift Station Elimination $180,000 $180,000
2.11 Falcon Ridge Lift Station Elimination $700,000 $700,000
tio
2.12 NE 7th Place Sewer Replacement
�t $110,000 $110,000
3.11 North Renton Sewer Replacement,Phase 11(Logan/Wells) $300,000 $300,000
5.2 Renton Avenue Interceptor $1,500,000 $1,500,000
5.3 Farrington School Lift Station Elimination $50,000 $50,000
5.4 Sean Lift Station Replacement
$350,000 $$20000
5.5 Airport Lift Station Rehabilitation
$20,000 $20,000
6.1 Black River Interceptor $1,320,000 $1,320,000
PRIORITY G PROJECTS
1.10 May Valley Interceptor.Section 3 $3,500,000 $3,500,000
1.11 Summer Wand Lift Station Elimination 3500,000 $500,000
2.13 South Highlands Sewer Collection System Replacement $6,800,000 $6,800,000
3.12 North Highlands Sewer Collection System Replacement $5,800,000 $5,800,000 '
5.6 West Renton Sewer Collection System Replacement $3,300,000 $3,300,000
4.80 Scenic Hills Sewer Collection System Replacement $3,630,000 $3,630,000
4.9 Talbot Hill Sewer Collection System Replacement $4,120,000 $4,120,000
ANNUAL PROJECTS
7.2 Infiltration and Inflow Testing and Monitoring $80,000 $80,000 $80,000 $80,000 $80,000 $80,000 31,200,000 $1,600,000
7.3 Existing Sewer Grouting $100,000 $100,000 $100,000 $100,000 $100,000 $1,500,000 $2,000,000
7.4 Miscellaneous Sewer Replacement $200,000 $200,000 $200,000 $200,000 $200,000 $4,500,000 5500,000
TOTAL CIP COSTS PER YEAR $2,025,643 $3,800,500 $5,305,000 $3,465,000 $2,945,000 $2,195,000 $41,300,000 $59,010.500 A
CITY ESTIMATED SHARE OF CIP COSTS $2 464 477 $3,278 781 $2 085 707 $l 469 137 $1,559138 $33 038,500 $43 895 740
NOTE: Project cost estimates are In 1990 dollars
CHAPTER EIGHT
b. REVENUE REQUIREMENTS
For purposes of the financial analysis, the estimated revenue requirements for the next
five years (1991 to 1995) were based on the 1990 operating budget--which reflects the
new organization with additions for planned new services and inflation. Customer service
growth was assumed to occur at 2% per year, which increases revenues from rate
collection by 2%. The capital budgets were based on the five-year CIP recommended in
this Plan.
In addition to reflecting the new organization, the 1990 operating budget was used as a
base rather than actual historical expenditures, because the old organization's cost
allocations were imprecise and based on a time-reporting system which was unreliable.
The transition's effect, however, has not been completely reflected in the currently
available financial information and will not be completely reflected until the City obtains
the first nine months of 401 and 421 fund operations of 1991.
D. CIP COSTS AND REVENUES
1. CAPITAL IMPROVEMENT PLAN COSTS
The recommended CIP presented in this Plan consists of improvements necessary to serve the
projected service area's population at saturation at the lowest reasonable cost. Consequently, the
CIP's recommendations are based on saturation conditions and will be implemented as they are
needed. The project costs listed here are intended for budgetary purposes only, because they are
based on current construction costs and should be adjusted for actual inflation depending upon
the actual construction date. The cost for the recommended CIP in the City's budget process is
shown in the annual budget in the 421 account.
The costs for all of_the improvements have been estimated, based on current information
available. It should be reiterated that changes in system flow rates, system growth, financial
policies, and regulatory requirements all contribute to adjustments in long-range planning. We
recommend that financial goals be evaluated every five years, and that a detailed cash flow
analysis be conducted annually.
TABLES VIII - 2, 3A & 3B present the estimated costs of the capital improvement program as
recommended in this Comprehensive Plan. TABLE VIII-2 summarizes these annual costs of
the CIP program showing the total project cost (current and inflated dollars) and the City's share
of the program costs (current and inflated). TABLE VIII-2 also presents the City's share as
estimated in the Rates Management Analysis accomplished during 1989. FIGURE 11
graphically presents the information provided in TABLE VIII-2.
" 1—I
8-8
Financial Analysis
TABLES VIII-3A & 3B show an annual breakdown for each capital improvement project using
current dollars. These estimates of funding responsibilities are based on the financial policies
presented in Chapter 3.
Debt service is a major cost of operating a wastewater utility. The majority of funding for the
CIP has historically been provided through revenue bond sales, which means the utility borrows
money from inventors while agreeing to repay those investors part of their debt with interest each
year. This debt service (principal and interest) is funded from the 401 account. (Utility
Operations and Maintenance) because the debt service is a high priority lien on the revenues of
the utility. Specific restrictions are contained in the bond covenants which restrict financial
procedures of the utility. For example, the wastewater utility is required to set rates that must
exceed its costs for operating and maintaining the system, cover payment of the debt service and
cover an additional specified percentage of debt service.
2. REVENUE SOURCES FOR CIP
a. CITY SHARE
In the financial analysis, the new debt service was calculated as the amount necessary to fund
the City's share of inflated CIP costs. The analysis also indicates how this additional debt
service affects the operating costs identified in the Rates Management Analysis (RMA). That
adjustment to the RMA will determine the rate adjustments necessary to accomplish the CIP.
Those costs will be recovered from customers based on their specific degree of benefit.
The City's share of funding originates from three different sources; Revenue Bonds, General
Obligation Bonds and the Public Works Trust Fund. These funding sources are discussed in
detail below.
1) Revenue Bonds
Revenue bonds are issued and sold by the City when large amounts of money are
needed to build general purpose capital improvements that benefit the City as a
whole. The City, like other municipalities, is capable of issuing tax-exempt
bonds. The principal and interest payments for such bonds are repaid from
general revenues, connection charges, assessments and interest earned on
investments. In order to qualify to sell revenue bonds, the City must show that
• its net operating income (gross income less expenses) is equal to or greater than
1.3 times the annual principal and interest due for all outstanding bonded
indebtedness. The 1.3 factor is commonly referred to as the "coverage factor."
8-9
CHAPTER EIGHT
2) General Obligation Bonds
The City has the authority to levy a tax (subject to a vote of the people) that could
be used to pay principal and interest costs of a general obligation bond issue. The
City has not used this means of revenue generation for the wastewater utility and
does not plan to unless a serious disaster occurs that requires massive
improvements and/or replacements beyond the City's ability to fund it through
other sources.
3) Public Works Trust Fund Loans
Low-interest rate loans are available from the state for replacement of existing
sewer system facilities. Interest rates vary from a low of 1% to a high of 3%
depending upon the City's matching share. It is emphasized that these low
interest rate loans are for replacements only and can not be used for
accommodating growth. These loans can be utilized effectively for replacements
in the Central Business District (CBD) and other fully developed areas of the City.
b. OTHER REVENUE SOURCES FOR CIP
This section presents the anticipated funding for the CIP from sources other than rates
revenue. Five funding sources are identified and these are discussed in more detail
below.
1) Grants
Federal and state loan and grant programs are available for wastewater capital
improvement projects. These programs are primarily designed to fund
improvements that upgrade wastewater treatment facilities in order to comply with
Federal Clean Water Act (PL92-500). With budget cutbacks at both the federal
and state level, the possibility of receiving government funding for a portion of
the recommended improvements at this time is remote. Should additional funds
be made available, the City should explore the feasibility of obtaining funds from
these sources.
The Centennial Clean Water Fund is an example of state grant funding which is
currently available. This grant fund's highest priority is to eliminate public health
emergencies and secondly, to improve water quality. The City should continue
to pursue these funds.
8-10
Financial Analysis
2) Municipality of Metropolitan Seattle (METRO)
METRO funds are available for the construction of interceptors and local service
extensions if the investment can be justified. Currently METRO limits its
investment to projects where the amortized capital cost of the project can be
recovered through METRO fees collected from the residential customer, or
equivalent, that are served by the extension at the time of project completion.
Based on this policy, METRO could construct the May Valley Interceptor and
other improvements.
3) LID (Local Improvement District) Assessments
LID assessment income is paid to the City from assessments levied against
specific properties which have benefitted from improvements in a defined area.
Typically, Local Improvements District's (LIDs) are formed by the City at the
written request (by petition) of property owners within a specific area of the City.
Upon receipt of a sufficient number of signatures on petitions, a local
improvements area is defined and improvements are designed for it. Each
separate property in the LID is assessed in accordance with the special benefits
the property receives from the sewer system improvements. Generally, it is the
policy of the City to assess the benefitted properties 100 percent of the cost of the
improvements plus the general facilities and sewer connection charges.
LID projects may be divided into two categories.
a) Improvements of Local Interest
If necessary, specific problems, such as excessive septic tank failures, can
be corrected through an LID. If not necessary, these projects can be
postponed until a later date when the area needs or desires it.
b) Improvements of Regional Interest
These project are beneficial to an area larger than an LID and are initiated
by the City. While LID funding would help, the project is of such
importance that a lack of LID should not delay it. If an LID cannot be
formed, additional funding from other sources (including the City) may be
necessary.
8-11
CHAPTER EIGHT
4) Developers
City policy requires that all developers/property owners take financial
responsibility for the necessary improvements before their development benefits
from them. This responsibility may be satisfied in one of the following ways. In
all cases, developer/property owners should be required to pay for the costs to the
extent their property benefits from the facility installed (their fair share).
a) Utilities Installed
If the utilities necessary are already installed,the developer/property owner
will reimburse the party (city or private) that installed the facility through
a latecomer agreement or special assessment district.
b) Utilities Not Installed
If the utilities necessary are not installed, then the developer/property
owner must extend or make improvements to the facilities following routes
that comply with the City's Comprehensive Sewer Plan. If the plan is not
definitive for that area, then the facilities will be extended and installed in
a manner that best serves the City of Renton's citizens as determined by
the utility system manager.
If the facilities installed potentially benefit other properties, a latecomer's
agreement may be requested. If the facility required by the City is
determined by City Council to be significantly more expensive because of
oversizing or routing requirements, then the Council may agree that the
City participate.
Ifa City capital improvement project is being planned, designed or
constructed, developer/property owners could choose to participate
financially in the City's project rather than make the improvements
themselves.
•5) Other
This category of funding responsibility is primarily for participation by other
municipalities, such as adjacent cities or districts. Negotiations need to be
accomplished to finalize funding responsibilities before annual adjustments to the
CEP and rate increases.
8-12
Financial Analysis
a) Contingency Revenue Plan
If the funding from other sources does not happen as anticipated, or on the
schedule anticipated, then the City should adjust this plan's CIP.
Alternative adjustments available to the City are as follows:
Reduce the scope and magnitude of the improvements with
corresponding reductions in cost,
Defer that portion of the improvements necessary for the benefit of
others until the funding is obtained,
Proceed with the CIP as recommended in this plan and finance the
other beneficiary's share with the provision that these other costs
should be recovered including interest costs.
It is critical to implementation of the CIP that these funds be obtained
from other funding sources. The level of funding from other sources is
based on the current perceived degree of benefit from each project; this
may change based on the actual degree of benefit assessed at the time the
project is planned to begin.
E. FINANCIAL ANALYSIS
The City has control of only approximately 40% of the total wastewater utility budget; METRO
charges are responsible for approximately 60% of the total budget. The City's major source of
revenue is from sewer collection charges from its customers. Theses charges provide the
necessary revenue for the operation and maintenance of existing sewer facilities and for the
City's share of the CIP. The financial analysis, summarized in TABLE VIII-1 (page 8-4),
illustrates that the City must raise its sewer collection charges by 64.4% over the next four years.
This is equivalent to an average annual rate increase of approximately 13.2% per year. However,
the same financial analysis also illustrates that these rate increases are not uniform but require
a greater percentage increase in 1992 (18.1%) then taper off to a smaller percentage increase in
1995 (8.8%).
The rate increases depend on several factors which can change. These factors are summarized
below:
• The customer base for the City is forecast to grow at an annual rate of 2% over the next
five years. If this growth rate is greater than 2%, adjustments to sewer collection rates
may be less than projected; however, if the customer base increases at less than 2% per
8-13
CHAPTER EIGHT
year, then adjustment to these sewer collection rates will lead to an increase above what
is shown in TABLE VIII-1.
•
• A significant portion of the wastewater utility's budget cover operations and maintenance
personnel costs. If recommended additions to the staff do not occur, then the rate
increases shown in TABLE VIII-1 could be reduced. The cost savings would be offset, -
however, by -the consequences of having inadequate and unqualified personnel; the
wastewater utility would not function efficiently and would not provide adequate services
to its customers.
' I
• The financial analysis assumes the CIP in this Plan will be implemented. If it is not,
whether deliberately or unintentionally, then the required rate increases presented in this
financial analysis will change. It should be noted that delaying the implementation of this
CIP may initially result in lower rate increases; however, if facilities fail, then unplanned
and costly repairs will be needed, which often results in excessively high rate increases
in the future.
Currently, the City Council and wastewater utility are implementing financial reviews through
the annual budget process. These reviews allow the wastewater utility access to the latest and
most accurate financial date, allowing more informed decisions. The wastewater utility will
continue to work with the City Council to recommend the necessary rate increase needed to
maintain and improve the system in order to provide the residents of the City with effective, safe,
and reliable sewage disposal service.
8-14
APPE\DIX A
Sewage Lift Station
Data Sheet
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Airport
LOCATION West Perimeter Road/Airport
CONSTRUCTED 1986 STATUS Active
REHABILITATED PROJECT S-424
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4B2B 4B2B
FLOW RATE 100 100
T.D.H 54 54
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K213DP6752A-TA 5K213DP6752A-TA
HORSE POWER 7.5 7.5
VOLTAGE 230/460 230/460
R.P.M/PHASE 1750/3 1750/3
FORCE MAIN DATA
LENGTH 195 LF SIZE 4" DI
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless Design)
with fiberglass enclosure
EMERGENCY POWER CONNECTION No
HEATING Yes CONTROL Floats
VENTILATION Yes TELEMETRY Yes
D:92-249:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Azalea Lane
LOCATION 2310 Aberdeen Ave NE
CONSTRUCTED 1979 STATUS Active
REHABILITATED PROJECT S-271
i '
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S &L S & L
MODEL NUMBER 4B2B 4B2B
FLOW RATE 100-150 100-150
T.D.H 44 44
MOTOR NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 11954-XX2978 11954-XX2978
HORSE POWER 7.5 7.5
VOLTAGE 200 200
R.P.M/PHASE 1766/3 1766/3
FORCE MAIN DATA
LENGTH 1250 LF SIZE 6" PVC
; i
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith &Loveless (Design)
with fiberglass enclosure
EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Float
VENTILATION Yes TELEMETRY Yes
D:92-249a:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Baxter
LOCATION 5015 Lake Washington Blvd. North
CONSTRUCTED 1974 STATUS Active
REHABILITATED PROJECT S-163
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER A & C A & C
MODEL NUMBER NSWV NSWV
FLOW RATE 400 400
T.D.H 23 23
MOTOR NUMBER 1 2
MANUFACTURER A & C A & C
MODEL NUMBER 400 400
HORSE POWER 3 3
VOLTAGE 230/460 230/460
R.P.M/PHASE 865/3 865/3
FORCE MAIN DATA
LENGTH 168 LF SIZE 8" CI
LIFT STATION CONSTRUCTION
DESCRIPTION Recessed wet well mounted lift station
EMERGENCY POWER CONNECTION Yes
HEATING No CONTROL Floats
VENTILATION Yes TELEMETRY Yes
D:92-249b:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Boeing
LOCATION N 8th Street and Park Ave N
CONSTRUCTED STATUS Active
REHABILITATED PROJECT
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Fairbank-Morris Fairbank-Morris
MODEL NUMBER K2D39148 K2D39149
FLOW RATE 400 400
T.D.H 30 30
MOTOR NUMBER 1 2
MANUFACTURER Fairbank-Morris Fairbank-Morris
MODEL NUMBER KZKU 1 KZKU 1
HORSE POWER 7.5 7.5
VOLTAGE 208-230/460 208-230/460
R.P.M/PHASE 860/3 860/3
FORCE MAIN DATA
LENGTH SIZE 6"
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well/dry well lift station
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Bubbler
VENTILATION Yes TELEMETRY Yes
D:92-249c:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Cottonwood
LOCATION 2003 Maple Valley Highway
CONSTRUCTED STATUS Active
REHABILITATED PROJECT
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Uniclosed Uniclosed
MODEL NUMBER 2827440 2827440
FLOW RATE 300 300
T.D.H 23 23
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K627XH202A 5K627XH202A
HORSE POWER 5 5
VOLTAGE 230/460 230/460
R.P.M/PHASE 1150/3 1150/3
FORCE MAIN DATA
LENGTH SIZE 6"
LIFT STATION CONSTRUCTION
DESCRIPTION Recessed wet well mounted lift station with
overflow bypass to river.
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Floats
VENTILATION Yes TELEMETRY Yes
D:92-249d:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Denny's
LOCATION 4750 Lake Washington Blvd.
CONSTRUCTED 1983 STATUS Active
REHABILITATED PROJECT S-339
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Paco Paco
MODEL NUMBER 470 470
FLOW RATE 100 100
T.D.H 35 35
MOTOR NUMBER 1 2
MANUFACTURER Cascade Cascade
MODEL NUMBER 5K184DL20239A 5K184DL20239A
HORSE POWER 5 5
VOLTAGE 208-230/460 208-230/460
R.P.M/PHASE 1735/3 1735/3
FORCE MAIN DATA
LENGTH 485 LF SIZE 4" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith and Loveless Design)
with fiberglass enclosure
EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Floats
VENTILATION Yes TELEMETRY Yes
D:92-249e:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Devil's Elbow
LOCATION 120th Place SW
CONSTRUCTED 1985 STATUS Active
REHABILITATED PROJECT S-296
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Clow-Yeomans Clow-Yeomans
MODEL NUMBER 4312-6260 4312-6260
FLOW RATE 400 400
T.D.H 157 157
MOTOR NUMBER 1 2
MANUFACTURER Baldor Baldor
MODEL NUMBER CM2539T CM2539T
HORSE POWER 40 40
VOLTAGE 230/460 230/460
R.P.M/PHASE 1760/3 1760/3
FORCE MAIN DATA
LENGTH 2150 LF SIZE 8" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station with Fiberglas
walk-in building
EMERGENCY POWER CONNECTION
HEATING Yes CONTROL Floats
VENTILATION Yes TELEMETRY Yes
D:92-249f:MAB:ps
I I
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Earlington School
LOCATION 8055 South Langston
CONSTRUCTED 1969 STATUS Active
REHABILITATED PROJECT S-137
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4B3 4B3
FLOW RATE 150 150
T.D.H 30 30
MOTOR NUMBER 1 2
MANUFACTURER
MODEL NUMBER
HORSE POWER 5 5
VOLTAGE 230/460 230/460
R.P.M/PHASE 860/3 860/3
FORCE MAIN DATA
LENGTH 637 LF SIZE 6" CI
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well/dry well lift station (Smith &Loveless Design)
with overflow bypass
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Bubbler
VENTILATION Yes TELEMETRY Yes
D:92-249h:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME East Valley
LOCATION 3400 East Valley Road
CONSTRUCTED 1977 STATUS Active
REHABILITATED PROJECT S-200
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Cornell Cornell
MODEL NUMBER 4NNTRHVM5-6 4NNTRHVM5-6
FLOW RATE 350 350
T.D.H 22 22
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K6227XH2004A 5K6227XH2004A
HORSE POWER 5 5
VOLTAGE 230/460 230/460
R.P.M/PHASE 1150/3 1150/3
FORCE MAIN DATA
LENGTH 80 LF SIZE 8" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well/dry well lift station
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Bubbler
VENTILATION Yes TELEMETRY Yes
D:92-249g:MAB:ps
;
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Highgate
LOCATION 1824 NE 20th Street
CONSTRUCTED 1979 STATUS Active
REHABILITATED PROJECT S-249
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4B2B 4B2B
FLOW RATE 100 100
T.D.H 35 35
MOTOR NUMBER 1 2
MANUFACTURER Marathon Marathon
MODEL NUMBER JA-215TBDR7092BD- JA-215TBDR7092BD-
WCW WCW
HORSE POWER 3 3
VOLTAGE 230 230
R.P.M/PHASE 1170/1 1170/1
FORCE MAIN DATA
LENGTH 658 LF SIZE 4" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless Design)
with fiberglass enclosure
EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Floats
VENTILATION Yes TELEMETRY Yes
ll
i
D:92-249i:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Falcon Ridge
LOCATION 2456 SE 8th Street
CONSTRUCTED 1981 STATUS Active
REHABILITATED PROJECT S-303
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S &L
MODEL NUMBER 4B2B 4B2B
FLOW RATE 100 100
T.D.H 101 101
MOTOR NUMBER 1 2
MANUFACTURER S &L S & L
MODEL NUMBER 16055-XX2980 16055-XX2980
HORSE POWER 15 15
VOLTAGE 230/460 230/460
R.P.M/PHASE 1800 1800/3
FORCE MAIN DATA
LENGTH 3217 LF SIZE 4" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless Design)
with fiberglass enclosure
EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Floats
VENTILATION Yes TELEMETRY Yes
D:92-249j:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Honey Creek
LOCATION 3501 NE 17th Place
CONSTRUCTED 1969 STATUS Standby
REHABILITATED PROJECT S-113
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Paco
MODEL NUMBER
FLOW RATE 100
T.D.H 58
MOTOR NUMBER 1 2
MANUFACTURER Century
MODEL NUMBER 6-324474-01
HORSE POWER 7.5
VOLTAGE 230
R.P.M/PHASE 1750/1
FORCE MAIN DATA
LENGTH 393 LF SIZE 4" CI
LIFT STATION CONSTRUCTION
DESCRIPTION Recessed wet well mounted lift station
with emergency bypass
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Floats
VENTILATION No TELEMETRY Yes
D:92-2491:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Honey Dew
LOCATION Union Ave NE near NE 7th Street
CONSTRUCTED 1984 STATUS Active
REHABILITATED PROJECT S-331
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER ENPO ENPO
MODEL NUMBER 4DNDL-SS 4DNDL-SS
FLOW RATE 100 100
T.D.H 15 15
MOTOR NUMBER 1 2
MANUFACTURER Reliance Reliance
MODEL NUMBER
HORSE POWER 2 2
VOLTAGE 230 230
R.P.M/PHASE 1160/3 1160/3
FORCE MAIN DATA
LENGTH 15 LF SIZE 4" DI
LIFT STATION CONSTRUCTION
DESCRIPTION Duel submersible non-clogging lift station
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Floats
VENTILATION TELEMETRY Yes
D:92-249k:MAB:pa
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Lake Washington Flush Station
LOCATION 2727 Mountain View Avenue.North
CONSTRUCTED 1972 STATUS Active
REHABILITATED PROJECT S-158
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Paco
MODEL NUMBER 470-11
FLOW RATE 400
T.D.H 6.5
MOTOR NUMBER 1 2
MANUFACTURER Paco
MODEL NUMBER
HORSE POWER 1.5
VOLTAGE 230
R.P.M/PHASE 1150/3
FORCE MAIN DATA
LENGTH SIZE 8" CI
LIFT STATION CONSTRUCTION
DESCRIPTION Submersible non-clogging pump to pump lake water into
gravity sewer for flushing purposes
EMERGENCY POWER CONNECTION No
HEATING No CONTROL
VENTILATION No TELEMETRY Yes
D:92-249m:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Lake Washington Beach
LOCATION 1101 Lake Washington Blvd. North
CONSTRUCTED STATUS Active
REHABILITATED PROJECT S-314
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S &L
MODEL NUMBER 4B2B 4B2B
FLOW RATE 125 125
T.D.H 25 25
MOTOR NUMBER 1 2
MANUFACTURER
MODEL NUMBER
HORSE POWER 3 3
VOLTAGE 340/460 340/460
R.P.M/PHASE 900/3 900/3
FORCE MAIN DATA
LENGTH SIZE 4"
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well/dry well lift station
(Smith &Loveless Design)
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Bubbler
VENTILATION Yes TELEMETRY Yes
D:92-249n:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Lind Avenue
LOCATION 1801 Lind Avenue South
CONSTRUCTED 1978 STATUS Active
REHABILITATED 1983 PROJECT S-229
PUMP AND MOTOR DATA
PUMP NUMBER 1 2 3
MANUFACTURER Hydr-O-Matic Hydr-O-Matic Hydr-O-Matic
MODEL NUMBER RV-6A RV-6A LV-6A
FLOW RATE 780 780 780
T.D.H 13 13 13
MOTOR NUMBER 1 2 3
MANUFACTURER U.S. Electric U.S. Electric U.S. Electric
MODEL NUMBER AV AV AV
HORSE POWER 5 5 5
VOLTAGE 230/460 230/460 230/460
R.P.M/PHASE 865/3 865/3 865/3
FORCE MAIN DATA
LENGTH SIZE 8"
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well/dry well lift station (Hydronix Design)
EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Bubbler
VENTILATION Yes TELEMETRY Yes
D:92-249o:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Lake Washington No. 2
LOCATION 3901 Lake Washington Blvd. North
CONSTRUCTED 1972 STATUS Active
REHABILITATED PROJECT S-158
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4B2B 4B2B
FLOW RATE 400 400
T.D.H 31 31
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K6225XH2500A 5K6225XH2500A
HORSE POWER 7.5 7.5
VOLTAGE 230/460 230/460
R.P.M/PHASE 1150/3 1150/3
FORCE MAIN DATA
LENGTH 192 LF SIZE 6".CI
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless Design)
with fiberglass enclosure
EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Floats
VENTILATION Yes TELEMETRY Yes
D:92-249p:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Misty Cove
LOCATION 5025 Ripley Lane North
CONSTRUCTED 1974 STATUS Active
REHABILITATED PROJECT S-163
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER A & C A & C
MODEL NUMBER NSWV NSWV
FLOW RATE 75 75
T.D.H 10 10
MOTOR NUMBER 1 2
MANUFACTURER A & C A & C
MODEL NUMBER 400 400
HORSE POWER 2 2
VOLTAGE 230/460 230/460
R.P.M/PHASE 860/3 860/3
FORCE MAIN DATA
LENGTH 3 LF SIZE 4" CI
LIFT STATION CONSTRUCTION
DESCRIPTION Recessed wet well mounted lift station
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Floats
VENTILATION Yes TELEMETRY Yes
D:92-249r:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Sears
LOCATION 321 Rainier Avenue South
CONSTRUCTED 1959 STATUS Active
REHABILITATED PROJECT S-24
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Wemco Wemco
MODEL NUMBER DVPL DVPL
FLOW RATE 200 200
T.D.H 30 30
MOTOR NUMBER 1 2
MANUFACTURER A & C A & C
MODEL NUMBER GV GV
HORSE POWER 5 5
VOLTAGE 220/440 220/440
R.P.M/PHASE 1160/3 1160/3
FORCE MAIN DATA
LENGTH 440 LF SIZE 6"
LIFT STATION CONSTRUCTION
DESCRIPTION Recessed wet well mounted lift station
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Floats
VENTILATION Yes TELEMETRY Yes
D:92-249q:MAB:ps
it
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Summerwind
LOCATION NE 23rd Street
CONSTRUCTED 1987 STATUS Active
REHABILITATED PROJECT S-444
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4C3B 4C3B
FLOW RATE 375 375
T.D.H 133 133
MOTOR NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 876167A-2 876293A-2
HORSE POWER 25 25
VOLTAGE 230/460 230/460
• R.P.M/PHASE 1800/3 1800/3
FORCE MAIN DATA
LENGTH 1065 LF SIZE 6"
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith and Loveless Design)
with fiberglass enclosure
EMERGENCY POWER CONNECTION
HEATING Yes CONTROL Floats
VENTILATION Yes TELEMETRY Yes
D:92-249t:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Sunset
LOCATION NE Sunset Blvd. and Union Avenue NE
CONSTRUCTED 1963 STATUS Active
REHABILITATED 1975 PROJECT S-43
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4B3 4B3
FLOW RATE 500 500
T.D.H 70 70
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K6235XH2500A 5K6235XH2500A
HORSE POWER 15 15
VOLTAGE 230/460 230/460
R.P.M/PHASE 1755/3 1755/3
FORCE MAIN DATA
LENGTH 2250 LF SIZE 6"
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well/dry well lift station (Smith and Loveless Design)
with overflow bypass
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Bubbler
VENTILATION Yes TELEMETRY Yes
D:92-249s:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Talbot Crest
LOCATION 2515 Talbot Crest Drive South
CONSTRUCTED 1965 STATUS Active
REHABILITATED PROJECT S-85
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER
MODEL NUMBER
FLOW RATE 50 50
T.D.H 96.6 96.6
MOTOR NUMBER 1 2
MANUFACTURER Quincy Quincy
MODEL NUMBER 240-10 240-10
HORSE POWER 5 5
VOLTAGE 220/440 220/440
R.P.M/PHASE 1750/3 1750/3
FORCE MAIN DATA
LENGTH 525 LF SIZE 4"
LIFT STATION CONSTRUCTION
DESCRIPTION Duel pneumatic ejectors lift station (Smith and Loveless Design) ,
with 8" overflow bypass
EMERGENCY POWER CONNECTION No
HEATING Yes CONTROL Electrodes
VENTILATION Yes TELEMETRY Yes
D:92-249v:MAB:ps
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Union 600
LOCATION NE 5th Street and Union Avenue NE
CONSTRUCTED 1983 STATUS Active
REHABILITATED PROJECT S-338
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Usemco Usemco
MODEL NUMBER 470 470
FLOW RATE 100 100
T.D.H 24 24
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K49VG8151 5K145DL20972
HORSE POWER 2HP 2HP
VOLTAGE 208-230/460 208-230/460
R.P.M/PHASE 1750/3 1750/3
FORCE MAIN DATA
LENGTH 272 LF SIZE 4" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless Design)
with fiberglass enclosure
EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Floats
VENTILATION No TELEMETRY Yes
D:92-249u:MAB:ps
APPENDIX B
Joint Use Agreements
APPENDIX B
JOINT USE AGREEMENTS
1. Soos Creek Water and Sewer District
(formerly Cascade Sewer District).
2. Sphere of Influence (Bellevue, Issaquah and Renton)
3. School District No. 403 (Apollo Elementary.School)
4. School District No. 403 (Earlington Elementary School)
5. King County Water District No. 107
(Franchise Agreement)
6. King County Water District No. 107
(Joint Use Agreement)
7. King County.Water District No. 128
(Service Area Boundary Agreement)
8. City of Kent
(Joint Use Agreement)
9. Cascade Sewer District
(Service Area Agreement)
10. Soos Creek Water and Sewer District
RESOLUTIOi'. NO. l•Z j y
WHEREAS THE CASCADE SEWER DISTRICT, a municipal corporation, hereinafter referred
to as "DISTRICT", has heretofore made application to the CITY OF RENTON, a city of the
second class under the laws and statutes of the State of Washington, hereinafter refer-
red to as "CITY", to use certain street right of ways for the construction, installation
and maintenance of a certain interceptor sewer line which line extends from the DIS-
TRICT'S present sewer system, through portions of the CITY OF RENTON and connects to
the sewer system of the Municipality of Metropolitan Seattle, and
WHEREAS it is deemed advisable and of public benefit to provide for the connection
and hookup of properties located within the CITY to said interceptor sewer to be
constructed at the sole cost and expense of DISTRICT,and
WHEREAS DISTRICT, CITY and certain affected property owners whose properties
lie within the CITY have heretofore agreed to enter into a certain Agreement, pursuant
to which CITY would collect for and on behalf of DISTRICT, certain hookup charges from
any and all property owners desiring to hookup to such interceptor line, without any
liability whatever on the part of the CITY for such line except as to CITY'S obligation
to remit funds unto the DISTRICT so collected from abutting owners desiring to tap on-
to such line, and said Agreement being reasonable and proper and in the public interest,
NCW THEREFORE,
BE IT RESOLVED BY THE MAYOR AND THE CITY COUNCIL OF THE CITY OF RENTON AS FOLLOWS:
SECTION I: All the aforesaid recitals and findings are hereby determined to be
true and correct in all respects.
SECTION II: The Mayor and the City Clerk are hereby authorized and directed to
execute, on behalf of CITY, that certain Agreement between DISTRICT and CITY dated
March.,''/ , 1964, a copy thereof being attached hereto, labeled Exhibit "A" and by
reference incorporated herein as if fully set forth. The Mayor and City Clerk are fur-
ther authorized and directed to issue such permits for the construction and installation
of said interceptor line within and under the CITY'S streets as specified in the afore-
s- "
fore-s• " -ont and as determined and approved b y the CITY'S Engineer. Such Agreement,
upon execution by all the parties thereto, shall then be recorded in the Office of the
King County Auditor at the expense of DISTRICT, and copies thereof furnished unto the
owners of property located within the CITY and abutting upon said interceptor sewer line
hereinabove referred to.
PASSED BY THE CITY COUNCIL this 2nd day of March, 1964.
Helmie Nelson, City Clerk
APPROVED BY THE MAYOR this 2nd day of March, 1964.
/ 4" 1/
APPROVED AS TO FORM: � 1 /�LC�2•?Cj" •
/'Frank Aliment, Mayor
:;.. ellan, City Attorney
.i _._:: i..:.14:no..4 - .. :-.•..-7:::'?...;
(..::,-:/ o the:. :. ._...
AGREEMENT
S `'L:,e 4 €..Jt
AG - 76.+ -641
T!IS AGREEMENT, made and entered into this 27th day of
March, 1964, by and between CASCADE SE,JER DISTRICT, a municipal corporation of .
the State of .Jashington, hereinafter called "DIS'tRIC T', and the CITY OF RENTON,
a municipal corporation of the State of :Jashington, hereinafter called "CITY",
UITNESSET 11:
THAT :;!iEREAS, the District and the City are situated contiguously in
King County, State of :Jashington, and
:JIIEREAS, the District has nrenared construction plans and called for
contract bids for construction of an interceptor sewer line to extend from the
present sewer system operated by the District, within its boundaries, and to run
through certain portions of the City to collection trunk sewer lines constructed
by the Municipality of Metropolitan Seattle, and
!'J1IEREAS, certain areas hereinafter described situated within the boundaries
of the City may also be served byuse of said interceptor line, thereby eliminating
the necessity of the City constructing such trunk facilities, and
I:IIEREAS, the District is willing and able to construct and pay for the
costs of said line and the City is willing and desirous to reimburse the District
for an agreed upon portion of said construction costs, according to the terms and
conditions hereinafter set forth.
NO;J, THEREFORE, IT IS HEREBY MUTUALLY COVENANTED AND AGREED by and between
the parties hereto, as follows:
1. That the entire construction cost of said interceptor line, according
to the engineering plans therefor, heretofore prepared by the District and approved
by the City, shall be paid by the District.
1
2. That said line shall be constructed through and across certain areas
within the City of Renton, King County, Hashington, described as follows:
The following description located in King County, Uashington,
described the centerline route of the proposed Interceptor Sewer
from its point of discharge into the Trunk Sewers of the Municipality
of Metropolitan Seattle to the Southerly line of the Seattle Cedar
River pipe line right-of-way, which is also the city limits of Renton:
Beginning at the intersection of the North line of the NE 1/4 of Section
21, Township 23 North, Range 5 East :,.M., and the Northwesterly margin j
of the City of Seattle's Mercer Island pipeline R/;;, said intersection
also being North 89000'24" hest 1112.45 feet from the Northeast corner
of said Sec. 21; thence South 28023'54" West along said Northwesterly
margin 1,008.02 feet; thence South 61°36'06" East pernendicular to said ,
Northwesterly margin 5.00 feet to the true point of beginning; also
being existing Metro N.H. R-10-33;
-1-
(1) Thence South 28°23'54" 'lest 913.00 feet;
(2) Thence South 87°04'09" West 84.50 feet;
(3) Thence North 32°01'11" :Jest 133.00 feet;
(4) Thence North 80°15'03" ,lest 1,213.76 feet;
(5) Thence South 14°13'42" ::est 321.90 feet;
(6) Thence South 36°27'57" :lest 428.92 feet;
(7) Thence South 40°52'44" :'lest 195.69 feet;
(8) Thence South 72°39'42" Fest 282.20 feet;
(9) Thence South 48°08'23" Test 397.00 feet;
(10) Thence South 14°26'59" :Jest 54.08 feet;
(11) Thence South 41°51'37" East 742.00 feet;
(12) Thence South 47°41'00" East 762.73 feet;
(13) Thence South 11°26'54" ;''est 603.91 feet;
(14) Thence South 11°03'08" West 104.00 feet.
The entire route of the interceptor sewer within the City of Renton,
the centerline of which isdescribed above, is located on easements
except the following, which are on Public Right of Way:
City of Renton streets;
The most Southwesterly 105.00 feet of Course (9);
All of Course (10);
The most Northwesterly 37.49 feet of Course (11).
The City shall grant to the District a permit for the construction, operation
and maintenance of said line, subject to the terms and conditions of this
Agreement.
3. That said line shall be used, operated and maintained by the
District and by the City for service of their present and future customers for
transferring sewage collected by the District and by. the City within their
respective territories for delivery to the Metro trunk line and no payment or
service charge therefor shall be required by either of these parties one to the
other for the privilege of such use, other than as hereinafter set forth herein
for reimbursement of construction costs, maintenance and repairs.
4. That the City shall have the right to authorize connections to
said line by property owners of property situated within the boundaries of the
City of Renton, King County, Washington, described as follows:
That portion of Sec. 21, Township 23 North, Range 5
East 11.14. lying South of the Cedar River and North
of the South line of the Seattle Cedar River Pipeline R/W,
except the East 1/2 of Southeast-1/4 and except the
Southeast 1/4 of Northeast 1/4 of said Section 21;
Also, that portion of the Easterly 1/2 of Sec. 20,
Township 23 North, Range 5 East W.M. from which the
sanitary sewage is carried Easterly or Southeasterly in
the future across 116th Ave. S.E. and into said Sec. 21
or into Sec. 28, Township 23 North, Range 5 East W.M.
under such terms and conditions as the City may establish for making such connec-
tions. The City shall also have the right to authorize connections to said line
by property owners of property which may hereafter annex to the City, under the
same terms and conditions as provided herein for properties now situated within
the boundaries of the City.
-2-
5. No person, firm or corporation shall be granted a permit, or be author-
ized to tap into, hook onto, or use said sewer interceptor line, has hereinabove
described, during a period of thirty (30) years from date hereof without first
paying unto the City, in addition to any and all other costs and charges made or
assessed for such hookup, tap, or use, an amount of not less than $.013 per square
foot of area included in any such properties for which connections are allowed by
the City. All amounts received by the City shall be paid out by it unto the
District under the terms of this Agreement within sixty (60) days after receipt
thereof. Furthermore, in case any tap, hookup, or connection is made into any
such interde}Aor sewer, without such payment first having been made as hereinabove
set forth, the City Council of the City of Renton may remove, or cause to be
removed, such unauthorized tap, hookup, or connection, and all connecting tile
or pipe located in the facility right-of-way, and dispose of unauthorized materials
so removed, without any liability whatsoever to any party, 1 1
It is expressly understood that the aforesaid minimum charge per square
foot, (based on the provisions of R.C.iJ. 35.92.025),shall not prevent the City from
adding or imposing such other reasonable charge for collection and bookkeeping
services, including taxes, if any, that may reasonably be incurred by the City,
in providing for ,the collection service herein undertaken for and on behalf of the
District; it being stipulated that the aforesaid per square foot rate is solely a
method of measurement of the amounts due and owing to the District for properties
allowed to connect and use said interceptor line facility.
6. That as between these parties, it is stipulated that the proportionate
share of costs of said interceptor line, as located within the boundaries of the
City; is approximately $60,000.00 and that it is the District's intent to be
reimbursed by the abutting property owners for such costs. It is expressly agreed
and covenanted byand between the parties that the City does in no way warrant
payment of any such sum, or sums, during the life of this Agreement, and that the
City's obligation hereunder shall be limited solely and exclusively to the collec-
tion of charges, asabove stated, from property owners who wish to hook up and
connect to said interceptor sewer trunk line. No interest shall be charged the
City upon such sum, or any.other sum, byte District, and the City's agency for
collection purposes on behalf of the District shall not impose in any way any
liability or other costs upon the City, and the District hereby agrees to hold the
City harmless from any liability relating to the costs of installation, or the
District'sbonded indebtedness in connection therewith.
-3-
7. That maintenance costs, repairs and operation necessarily incurred
for said interceptor line within the boundaries of the City shall be borne on a
proportionate basis determined on the same ratio as the number of users served
by the Distt'ict bears to the number of users served by the City using said inter-
ceptor line, Damage to said interceptor line which may be caused by the negligence
of either these parties, their agents or assigns, shall be repaired by the
responsible party.
8. That ownership of said line shall remain in the District until the
expiration of a period of thirty (30) years from date hereof or payment in full of
the present bonded indebtedness of the District or subsequent bonded indebtedness
incurred for the purpose of refinancing thereof shall have been paid in full,
whichever event shall come first, or as otherwise provided by law. Thereafter,
the City shall be under no further obligation to collect or remit any other or
further sums to the District as reimbursement for construction costs and owner-
ship of said line shall be jointly vested in the District and the City, with full
and complete right of use thereof allowed to each party and with expenses of
maintenance thereof continued upon the same proportionate basis as hereinabove
set forth.
9. In the event said line shall become inadequate to serve the entire area
lying within the District and the City, preference shall be given to the District
and its users and the City shall, as additional lines become available, divert
sewage collected within the District into parallel and additional trunk lines,
which it is contemplated would then be available as lines necessarily constructed
in development of said properties to such extent.
IN 1ITNESS WHEREOF, the parties hereto have set their hands and seals this
27thday of March, 1964.
CASCADE SE'' R.DISTRICT
By: - '--
tairman
By: l
_ CE "
Secretary
CITY OF ENTON
By: ' /6_5��-
Mayor -
Attest:
City Clerk
-4-
STATE OF WASHINGTON )
ss.
COUNTY OF KING
On this 27th day of March, 1964, before me, the undersigned, a
Notary Public in and for the State of Washington, duly commissioned and
sworn, personally appeared LONELL V. LECKENGY and CHARLES W. RAYLESS, to
me known to be the Chairman and Secretary, respectively, of CASCADE SE:JER
DISTRICT, a municipal corporation of the State of Washington, the corporation
that executed the foregoing instrument, and acknowledged the said instrument
to be the free and voluntary act and deed of said corporation, for the uses
and purposes therein mentioned, and on oath stated that they are authorized
to execute the said instrument and that the seal affixed isthe corporate
seal of said corporation.
W'JITNESS my hand and official seal hereto affixed the day and
year in this certificate above written.
Notary Public in and for the State
of Washington, residing at Renton
STATE OF WASHINGTON )
ss. •
COUNTY OF KING
On this //I' day of 4*1-ch-1964, before me, the undersigned, a
Notary Public in and for the e RS.Whington, duly commissioned and
sworn, personally appeared FAN, ALIPZand UELMIE NELSON, to me known
to be the Mayor and City Clerk, respectively, of THE CITY OF RENTON, a
municipal corporation of the State of Washington, the corporation that
executed the foregoing instrument and acknowledged the said instrument
to be the free and voluntary act and deed of said corporation, for the
uses and purposes therein mentioned, and on oath stated that they are
authorized to execute the said instrument and that the seal affixed is
the corporate seal of said corporation.
WITNESS my hand and official seal hereto affixed the day
year in this certificate above written. nd
7a.z,t
•
Notary-Public in and for the State
of Washington, residing at Renton
-5-
RATIFICATIOL OF AGREI3MENI'
The undersigned, being the principal owners of properties
hereinabove described, situated within the boundaries of the City of
Renton, in consideration and recognition of the obligations incurred by
the City of Renton under the terms and conditions of the foregoing
Agreement, do hereby ratify and acknowledge the obligations thereof to
the extent that said Agreement affects our real pronerty hereinabove
•
described.
We do hereby acknowledge upon behalf of ourselves, our
heirs, executors and assigns that none of our said properties may be
connected to the sewer trunk main being constructed by Cascade Sewer
District until payment has been made to the City of Renton of such
connection and hook-up fees as may be established by the City, which
amount will include the $.013 obligation of the City to the District as
hereinabove described.
DATED this „44 day of March, 1964.
A
•
VIKING INVESTMENT C.:•ORATION
By: A • AI • / .Gard.,...✓L rar
Presi* _
easu er
s £,CIc r
ARNE G. GOEDECKE, in•i .4 ,11y.and as
Attorney-in-Fact for Louise M. Goedecke,
his wife
-6-
' f
STATE OF WASHINGTON )
ss.
COUNTY OF KING )
On this .50— day of March, 1964, before me, the undersigned; a
Notary Public in and for the State of Washington, duly commissioned and
sworn, personally appeared K. A. SAND'.1ICK, JR. and ROBERT C. DETRICH, to
me known to be the President and Treasurer, respectively, of VIKING
INVESTMENT CORPORATION, the corporation that executed the foregoing
instrument, and acknowledged the said instrument to be the free and
voluntary act and deed of said corporation, for the uses and purposes
therein mentioned, and on oath stated that they are authorized to execute
the said instrument and that the seal affixed is the corporate seal of said
corporation.
WITNESS my hand and official seal hereto affixed the day and year
in this certificate above written.
I �
Notary Pu.lic in :n• or t • rate
of Washington, r- iding at •
STATE OF WASHINGTON )
ss.
COUNTY OF KING )
•
On this 36— day of March, 1964, before me, the undersigned, a
Notary Public in and for the State of Washington, duly commissioned and
sworn, personally appeared ARNE G. GOEDECKE, Individually and as Attorney-
in-Fact for Louise M. Goedecke, his wife, to me known to be the individual
that executed the foregoing instrument and acknowledged the said instrument
to be his free and voluntary act and deed, for the uses and purposes therein
mentioned.
WITNESS my hand and official seal hereto affixed the day and year
in this certificate above written.
Notary Public in ail for th- te
of Washington, residing ' :
ing at -
I
-7-
. CITY OF RENTON, WASHINGTON
RESOLUTION NO. 2269
ti
WHEREAS the Cities of Bellevue, Issaquah and Renton acknowledge the
need for a long range planning to avoid disputes between the various cities as to future
annexations or extension of city services, and
WHEREAS the aforesaid cities anticipate that the establishment of spheres
of influence would assist in attaining that goal, and
WHEREAS the establishment of spheres of influence does not commit any
city financially or otherwise, and
WHEREAS the boundaries of the spheres of influence are negotiable at a
later date and are presently to be used only for long range purposes, and
WHEREAS it has been agreed by the cities that the northern boundary of
the Renton sphere of influence would be adjusted to incorporate the Renton School
District boundary, NOW THEREFORE
THE CITY COUNCIL OF THE CITY OF RENTON, WASHINGTON DO
RESOLVE AS FOLLOWS: • .
SECTION I: The above recitals are found to be true and correct in all
respects.
SECTION II: The City Council of the City of Renton does accept and agree
to utilize the sphere of influence as presented to the Council for the purpose stated
hereinabove except that the northern boundary of said sphere shall be adjusted to
incorporate the Renton School District Boundary.
PASSED BY THE CITY COUNCIL this 23rdlay of April, 1979.
Delores Mead, City Clerk
APPROVED BY TILE MAYOR this23rdday of April, 1979.
Charles Delaurenti, Mayor
Approved as to form:
6:44.41,4.A.4
Lawrence J. Warren, City,.Attorney
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AGREEMENT AND CONVEYANCE RE
p SEWER LINES AND APPURTENANCES
'THIS AGREEMENT made and entered into this?-K.•t day of April , 1971
by and between the CITY OF RENTON, a municipal corporation of the second class under
U the laws and statutes of the State of Washington, hereinafter referred to as "City",
and RENTON SCHOOL DISTRICT NO. 403 hereinafter referred
to as " DEVELOPER II;
• W I TNES S E Th:
WHEREAS DEVELOPER • is desirous of installing certain
sewer lines and appurtenances thereto at, near or within the heroihbelotl described
property and to connect same to the City's Sanitary Sewer System so that suchimprovements
will constitute an integral part thereof; and
WHEREAS no other property owners or users are presently available to share in
the cost and expense of construction of such improvements and the parties hereto having
in mind the provisions and terms of Chapter 261 of the 1959 Sessions Laws, generally
referred to as a "Municipal Water and Sewer Facilities Act, (RCN 35.91.010 et aeq)"; ard,
WHEREAS DEVELOPER is willing to pay all the costs
and expensesfor the installation of said improvements;
NOW THEREFORE, IT IS HEREBY AGREED AND COVENANTED BY AND BETWEEN THE AFORESAID
PARTIES AS POLLCWS:
1. DEVELOPER hereby acknowledges and covenants.
that he is the owner of the following described property, to—wit:
See Schedule "A"
and DEVELOPER hereby agrees and covenants to cause to have
installed the following described improvements, to—wit:
1W L.F. Of 8" concrete sanitary sewer main in Northeast 10th Street.and South-
east 116th Street between an existing sanitary sewer manhole at the intersection of
Anacortes Northeast and Northeast loth Street anda point 1512 feet East of said intersection.
and such installation to be made in full compliance with all applicable codes and
regulations of the City of Renton. DEVELOPER further
covenants and warrants that all expenses and claims in connection with the construction
I •
iland installation of the aforesaid improvements, whether for labor or materials or both,
have been or will be paid in full, all at DEVELOPER expense.
r and DEVELOPER covenants and agrees to hold the City of
Renton harmless from any liability in connection therewith.
2. DEVELOPER further certifies, that the total
41 estimated cost of said construction as hereinabove specified will be in the sum of
$ 591994.90 , Based on said total amount of coat, )1iXXXX XjidH(>i.4E4 (IXN. /(Xl(
11
c the cost ;:er front lineal foot (strike out the inapplicable Fart) of said improvement
shall be employed to determine the prorate reimbursement to DEVELOPER
by any owner of real estate, who did not contribute to the original cost of such
0 improvement, and who subsequently wishes to tap into or hook unto or use said facilities,
N which tap or hookup shall include connections to laterals or branches connecting thereto,
r
all subject to the laws end ordinances of the City of Renton and the provisions of this
Agreement. It is hereby further agreed that in the event tho total actual cost of
the aforedescribed improvement shall to different from that set forth hereinabove, then
this Agreement will be duly amended to set forth the total actual cost thereof.
3. It is hereby found and determined that the construction and installation of
said aforedescribed improvement is in the public interest and in furtherance of public
health and sanitation. ' ',
4, DEVELOPER hereby agrees and covenants to convey,
transfer and assign unto City all right, interest and title in and to said improvements
and all appurtenances and accessories thereto. free from any claim and encumbrance of
any party whomsoever; City agrees to accept and maintain said improvement as part of 1 ;
its present sanitary sewer system upon approval thereof by the City Engineer and after
DEVELOPER
inspection of said construction. further agrees and
covenants to execute and to deliver unto City any and all documents including Quit Claim
Deeds and Bills of Sales that may reasonably be necessary to fully vest title in the City
and to effectuate this conveyance and. transfer. DEVELOPER further
. agrees and covenants to pay unto City such service or other charges as may be imposed
by the Ordinance of the City of Renton from time to time applicable to like users of
the same class.
5. City reserves the right, without affecting the validity or terms of this
Agreement, to make or cause to be made extensions to or additions of the above improvement
and to allow service connections to be made to said extensions or additions, without
liability on the part of the City.
6. No person, firm or corporation shall be granted a permit or be authorized .
to tap into, hookup unto or use any such facilities or extensions thereof during the
period of 10 years from date hereof, without first paying unto City, in addition to
wily and allother costs, fees and charges made or assessed for each tap, hookup or use,
or for the sanitary sewer facilities constructed in connection therewith, the amount
required by the provisions of this contract. All amounts so received by the City shall
/ be paid out by it unto DEVELOPER under the terms of this agreement
14 within sixty (60) days after receipt thereof. Furthermore, incase any tap, hookup or
O connection in made into any such contracted facility, without such payment having been
1 first made, the legislative body of the City may cause to have removed such unauthorized
'. tap, hookup or connection, end all connecting tile or pipe or related accessories located
in the facility of right of way, and dispose of such unauthorized material so removed,
r• without any liability on the part of the City whatever. Itis further agreed and
covenanted that upon expiration of the.Verm of this agreement, to-wits 10 years
from date hereof, City shall be under no further obligation to collect or make any further
sums unto DEVELOPER
The decision of the City Engineer or his authorized representative in
determining or computing the amount due from any benefited owner who wishes to hookup or
tap unto such improvement, shall be final and conclusive in all respects.
6. It is further agreed and understood that the aforedescribed improvements
to be undertaken and paid for by DEVELOPER have been or are about
to be connected with the sanitary sewer system of the City, and upon such connection and
acceptance by the City through its legislative body, said extension and/or improvement
shall be and become a part of the municipal sanitary sewer system.
7. This agreement shall be placed for record with the King County Auditor's
office immediately upon execution thereof end all costa of recording shall be the
responsibility of THE DEVELOPER
DATED thisd Ytt'Lday of Apri 1 , 197]
CITY OF RENTON, a M icipal corporation RENTON SCHOOL DISTRICT NO. 403
By alt4i/t1-` Ar6PA ��l�f
��r ���� 0 0 1!a l t
CITY CLERK cre Cary
- 3 -
• i
•
•
•
STATE OF WASHINGTON )
) ss
COUNTY OF KING )
1970
On this 27t1Aay of February , MINN, before me, the undersigned, a
Notary Public in and for the State of Washington, duly commissioned and sworn
personally appeared Barbara S. Lally and H. R. Johnson
to e^ known to be the President and Secretary , respectively,
of Renton School District No. 1103 the corporation that executed the
foregoing instrument, and acknowledged the said instrument to be the free and
voluntary act end deed of said corporation, for the uses and purposes therein
mentioned, and on oath stated that authorized to execute the said
V� instrument-and that the seal affixed is the corporate seal of said corporation.
ny WITUESS my hand and official seal hereto affixed the day and year in
this certificate above written.
/1( -4-1
•
Notary Public in and for the S lc
of Washington, residing at Renron.
STATE OF WASN]NG7oN )
) ss
C0UN7Y OF KING )
•
On thiso?i-Gtday of April . •1971before me, the undersigned, a
• Notary Public in and for the State of Washington, duly commissioned and sworn
personally appearedAvery Garrett & Helmie Nelso 0 me known to be the
individual described in and who executed the foregoing instrument, and acknowledged
to me that the?igned and sealed the said instrument as a free and voluntary
act and deed for the uses and purposes therein mentioned.
WITNESS my hand and official sea] hereto affixed the day_and year in
this certificate above written.
..« A • • ..,.1 _e 4.1
tart' Public in and for the State
f Washington, residing at Renton.
•
•
- 4 -
•
•
•
tib• /+
i
//
•
•
CAG-1789-71
•
EXHIBIT "A"
Renton School District - Agreement & Convey. Sewer Lines
LEGAL. DESCRIPTION
The northwest ' of the Northwest a of
1) the Northeast 17 of section 10, township
23 north range 5 E.W.M., EXCEPT the north
con-
()
feet and the east 30 feet thereof con-
veyed to King County for road and EXCEPT
r6 the south 132 feet of the east 330 feet
thereof, and
The North of the East Ili of the Northeast
v of the Northwest 4 of section 10, town-
ship 23 north, range 5 E.W.M. , EXCEPT the .
north 30 feet for road and EXCEPT the north
275 feet of the west half thereof; and the
south• r of the east z of the east } of the
northeast ,'-, of the northwest of section
10, township 23 north, range 5 E.W.M., EX-
CEPT the south 30 feet thereof for road and
EXCEPT the north 30 feet thereof, and
The south 530 feet of tract 6, Joseph
P. Marshall Tracts, all situated in
the County of King, State of Washington.
i . • ,
k. C'/IJ✓ /7 F7_ ,/
I_
l • •
AGREEMENT AND CONVEYANCE RE
SEVER LIMS AND APPURTEti4NCES
1
•I.
THIS AGREEMENT made and entered into tbia,;1ix,f day of r3.1. 19 71
i by and between the CITY OP MIEN, a municipal corporation of the second class under
1
the laws and statutes of the State of Washington, hereinafter referred to as "City",
i
and Renton School District No. 403 hereinafter referred 1
to as "
' l
'" NI THESSETH:
, NC v
i PV
WHEREAS DEVELOPER ie desirous of installing certain
sewer lines and appurtenances thereto at, neer or within the hereibbeloit described
property and to connect same to the City's Sanitary Sewer System so that •uchimprovemente
N will constitute an integral part thereof; and
WHEREAS no other property owners or users are presently available to share in
the cost and expense of construction of such improvements and the parties hereto having
in mind the provisions and terms of Chapter 761 of the 1959 Sessions Laws, generally
I referred to es a "Municipal Water and Sewer Facilities Act,
(RW 35.91.010 et seq)"l and
WHEREAS DEVELOPER La willingpay all the costa
and expensesfor the installation of said improvements; to
NW THEREFORE, IT IS HEREBY AGREED AND COVENANTED BY AND BETWEEN THE AFORESAID
PARTIES AS POLLWS:
1. DEVELOPER
hereby acknwledges and covensn•,'
that be ie the owner of the following described property, to-wit:
See Schedule "A"
•
and DEVELOPER
hereby agrees and covenants to cause to have
•
installed the following described improvements, to-uitt
Size In • From
An 8" sanita To
ry sewer Langston Road 250 ft. northerly78th Ave. So.
main C lift station of So. 134th St.
! 6" Cast Iron ". •
Pressure Main ii South 134th St.
6" C.I. Pressure
Main
5.134th St. Langston Road 250 ft, east of
Langston Road
I and such .installation to be made in full compl/ance with all applicable codes and
regulations of the City of Renton. I DEVELOPER
further
•
covenants and warrants that all expenses and claims in connection with the construction
• f• - 1 -
and installation of the aforesaid improvements, whether for labor or materials or both,
have been or will be paid in full, all at DEVELOPER expense,
and DEVELOPER covenants and agrees to hold the City of
Renton harmless from any liability in connection therewith.
2. DEVELOPER further certifies that the total
estimated coat of said construction as hereinabove specified will be in the sum of
! S 28,660.18 . Based on said total amount of cost, / or
j u the cost per front lineal foot (strike out the inapplicable cart) of said improvement
shall be employed to determine the prorate reimbursement to DEVELOPER
by any owner of real estate, who did not contribute to the original cost of such
improvement, and who subsequently wishes to tap into or hook unto or use said facilities,
which tap or hookup shall include connections to laterals or branches connecting thereto,
all su-ject to the laws end ordinances of the City of Renton and the provisions of this
Agreement. It is hereby further agreed that in the event the total actual cost of
the aforedescribed improvement shall be different from that set forth hereinabove, then
this Agreement will be duly amended to set forth the total actual cost thereof.
3. It is hereby found and determined that the construction and installation of
said aforedescribed improvement is in the public interest and in furtherance of public
health and sanitation.
4, DEVELOPER hereby agrees and covenants to convey,
transfer and assign unto City all right, interest and title in and to said improvements
and all appurtenances end accessories thereto, free from any claim and encumbrance of
any party whomsoever; City agrees to acceptand maintain said improvement as pert of
its present sanitary sewer system upon approval thereof by the City Engineer and after
inspection of said construction. DEVELOPER further agrees and
covenants to execute and to deliver unto City any and all documents including Quit Claim
Deeds and Bills of Sales that may reasonably be necessary to fully vest title in the City
and to effectuate this conveyance and transfer. DEVELOPER further
agrees and covenants to pay unto City such service or other charges as may be imposed
by the Ordinance of the City of Renton from time to time applicable to like users of
the same class. -
•
5. City reserves the right, without affecting the validity or terms of this
Agreement, to make or cause to be made extensions to or additions of the above improvement
and to allow service connections to be made to said extensions or additions, without
• liability on the part of the City.
6. No person, firm or corporation shall be granted a permit or be authorised
•
to tap into, hookup unto or use any such facilities or extensions thereof during the
period of __years from date hereof, without first paying unto City, in addition to
;any and all other costs, fees and charges made or assessed for each tap, hookup or use,
or for the sanitary sewer facilities constructed in connection therewith, the amount
required by the provisions of this contract. All amounts so received by the City shall
be paid out by it unto DFVELOPER under the terms of this agreement
within sixty (60) days after receipt thereof. Furthermore, incase any tap, hookup or
U connection is made into any such contracted facility, without such payment having been
ey
O first made, the legislative body of the City may cause to have removed such unauthorized
C tap, hookup or connection, and all connecting tile or pipe or related accessories located
in the facility of right of way, and dispose of such unauthorized material so removed,
N. without any liability on the part of the City whatever. It is further agreed and
covenanted that upon expiration of the term of this agreement, to—wit: 5
years
from date hereof, City shall be under no further obligation to collect or make any further
sums unto DEVELOPER
The decision of the City Engineer or his authorized representative in
determining or computing the amount due from any benefited owner who wishes to hookup or
tap unto such improvement, shall be final and conclusive in all respeets.
6. It is further agreed and understood that the aforedescribed improvements
to be undertaken and paid for by DEVELOPER
have been or are about
to be connected with the sanitary sewer system of the City, and upon such connection and
acceptance by the City through its legislative body, said extension and/or improvement
shall be and become a part of the munripal sanitary sewer system,
7. This agreement shall be placed for record with the King County Auditor's
office immediately upon execution thereof and all costs of recording shall be the
responsibility of THE DEVELOPER
BATED thisoxo( day of April ,1971
CITY OF RENTON, a M icipal corporation RENTON SCHOOL DISTRICT 0. 403
By (JP.A
q By �/ � 00-
j/ f Jr es-t ant •
. CITY CLERK Secretary
•
- 3 —
•
•• •
• STATE OF WASHIMTON )
) sa
COUNTY OF KIAC )
On this.• day of , 1969, before me, the undersigned, a
Notary Public in and•for the State of Washj, pen, duly ccarniesioned and sworn
personally appeaCath February xxand
to ©o known to be the and
of Barbara S. Lally the Norrkrattitt nelert executed ctheel�,
foregoing instrument, andp4CkltWledged the said in9tm,meetiitzio be the free and
vol-gpAg,y,atImulct.dead, tttidlloar pb9(It ion, for the uses end purposes therein
mentioned, and on oath stated that authorized to execute the said
'_.instrument and that the seal affixed is the corporate seal of said corporation.
they are
WITNESS my hand and official seal hereto affixed the day and year in
this certificate above written. 40 iZ
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Notary Public in and for the tate
of Washington, residing at Renton.
STATE OP WASHINGTON )
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COUNTY OF KING ) as
a On thisa7(04 day of 0,--("4� 7//77/ before me, the undersigned, a
Notary Public in and for the State...91 1•lashin ton, duly commisaioned and sworn
.personally appearedaxttyJ( Oaf-�Jr„•.,c• • , to me known to be the
individual de cribed in and who executed the foregoing instrument, and acknowletz:d
to me that ai
/ gpeQ.IncylepA¢dz tj►el,,ai4inatrvaAt as CL free and voluntary
act and deed for the usla and purposes therein mentioned.
WITNESS myhand and official seal hereto affixed the day and year in
this certificate above written. y •
• /N tory Public in and for the State
Washington, residing at Renton.
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CAG-1787-71
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EXHIBIT "A"
Renton School District - Agreement s Convoy. Sewer Lines & Appurt.
All of Blocks 13, 15 and 16, together with that portion of Block
14 lying southerly of 78th Avenue South (Join Langston Road Nu. 3) of
Earlington Acre Tracts, according to the Plat recorded in volume 15 of
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Plats, page 84, Records of King County; Washington.
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CAG-1767-71
AN£NDML'NT TO AGREEMENT
AND CONVEYANCE RE SEWER LINE
Pursuant to the terms of an agreement and conveyance
for sewer line made and entered into between the City of Renton
and Renton School District Mo. 403. for the Earlington
Elementary School, paragraph 2, page 2 of that agreement
is hereby amended to substitute the total actual cost of the
improvement in the amount of $ 43.251.47 , for the total
'O
estimated coat.
Paragraph 6, pages 2 and 3, is hereby amended to
!'j show a time period of 10 years for the present tine period
of 5 years.
O
\ All other terms and conditions of said Agreement
N
to remain in full force and effect.
CITY OF RENTON
A Municipal Corporation
BY _ AJ Il.,_ . if
1 Mayor
By ��/rn�-1J --a1
City a'eTk
RENTON SCHOOL DISTRICT NO. 403
.
By£a/j- ,tate 1
Barbara Lally, Prea rZ drinft
Boa d Directors
/
BY Al A . 4= . 924--"7"t/
N.R. r• son, Secretary
Boar. Directors
.
STATE Or VALHIHCTOH ) •
) as
COUNTY Ot KING )
On this
personally
AVERY GARRETTand NLLMILdLLSOfappeared
tomeknownftoebeethe Mayor and
the City Clerk, respectively. of the municipal corporation
that executed the within and foregoing instrument, and
acknowledged said inetrunent to be the free and voluntary
act and deed of said corporation, for the uses and purposes
therein mentioned, and on oath stated that they were authorized
to execute said instrument and that the seal affixed 1s the
corporate seal of said corporation.
Given under my hand and official seal this x2,1-01-
day of ,__._April . 1971.'
N tory ?uhlic in and for the State
/6f Vaahington, residing at EanuILrtl _
STATE Of WASHIFGTON )
) as
COUNTY or M.INO )
On thio day personally nppeatred before we o"AH ARA S.
LALLY and H. R. JOUREOY, to me known to be the President and
Secretory. respectively, of Renton School District No. 403,
the agency that executed the foregoing instrument, and acknow-
ledged said instrument to be the ;ren and coluntary act and
deed of said agency, for the Imes and purposes therein mentioned,
and on oath stated that they are authorized to ekecute said
instrument.
iven under ny hand and -official seal this g'7
day of (i,( 1 I T O.
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M tar Public �?
y u ii a n and for .
State of Washington, rest ing
in Renton.
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CITY OF RENTON, WASHINGTON
RESOLUTION NO. 2692
A RESOLUTION OF THE CITY OF RENTON, WASHINGTON,
ADOPTING UTILITY FRANCHISES
WHEREAS Water District No. 107 currently owns water mains
and sewer lines within the City of Renton rights-of-way, and
WHEREAS Water District No. 107 has applied to the City of
Renton for a water franchise and a sewer franchise to install ,
construct, maintain, and operate water mains and sewer lines in
the City rights-of-way, and
WHEREAS the City Council has reviewed the franchise
agreements negotiated between City Staff and Water District No.
107 and finds them to be in acceptable form, now therefore,
THE 'CITY COUNCIL OF THE CITY OF RENTON, DO RESOLVE AS
FOLLOWS:
SECTION I : The findings, recitals and determinations are
hereby found to be true and correct in all respects.
SECTION II: The Utility Franchises for Water District No.
107 as they relate to water mains, a copy of which is attached
hereto as Exhibit "A" and incorporated by this reference, and
sewer lines, a copy of which is attached hereto as Exhibit "B"
and incorporated by this reference, are hereby approved and
adopted, subject to the laws and ordinances of the City of
•
RESOLUTION NO. 2692
Renton, and the Mayor and City Clerk are hereby authorized to
sign the franchise agreements.
PASSED BY THE CITY OF RENTON this 2nd day of November,
1987. ' ' .
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Maxine E. Motor, City Clerk
APPROVED BY THE MAYOR this 2nd day of November
1987. _ _.
.Stain pnc .
Barbara Y. ` Shinpolch, Mayor
Approved as to form:
Lawrence J. Warr :9 City Attorney
CITY3:46/10/27/87/nd
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EXHIBIT "B" tiny I , ? 0 ; :; '87
UTILITY FRANCHISE ••"
THIS UTILITY FRANCHISE is given this 4,,„1,( day of
1987, by the City of Renton, King County,
Washington, a municipal corporation ( "Renton" or "Grantor" )
to Ring County Water District No. 107, a municipal
corporation ( "District" or "Grantee") .
SECTION 1: RECITALS
0) 1 . 01. The District has applied to Renton for a sewer
04 utility franchise to install , construct, maintain and
operate sewer lines, including mains, lateral , appurtenances
and side sewers along,
GD streets , avenues, boulevards , alleysanacross ands
city roads,
hereinafter called "rights-of-way", Public placesc
'r'� within the District's
r4 service area.
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Q0 1 . 02. The Renton City Council ( "Council" ) has reviewed
and considered such application for sewer utility franchise.
WHEREFORE, in consideration of the terms and conditions
herein, Renton hereby grants to the District a sewer utility
franchise as follows:
SECTION 2: SEWER UTILITY FRANCHISE
2:01. Renton, pursuant to Resolution No. , 02.46 9 '... duly
and regularly enacted by its Council on the ' , 'day of
1987, hereby grants to the district and to its
successors and assigns, for the term of twenty-five (25)
years from the date hereof, the right, privilege, authority
and franchise for itself, its successors and assigns, to
install, construct, maintain and operate sewer lines,
including mains, laterals , appurtenances, and side sewers
along, under and across such City rights-of-way, together
with all necessary equipment of every sort necessary,
subject to all the terms and conditions herein.
2. 02. This Utility franchise shall apply to those
portions of the District's sewer lines and appurtenances
within the City of Renton' s present rights-of-way as
referenced in paragraph 1. 01 above.
CITY3:50/10/28/87
s7/11/la #07-,9
A
RECD F 13.00
C►-i5HSL *4'4'13.00
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SECTION 3 : GENERAL TERMS AND CONDITIONS APPLICABLE TO THE
UTILITY FRANCHISE.
3. 02 Definitions :
(a) Right-of-Way. The term "right-of-way" shall
be understood to include any and every Renton City road ,
street , avenue , alley or other public place designated or
specified in this franchise in, upon, under, over, across and
along which rights are , or are intended to be vested in the
Grantee, its successors and assigns , under and by virtue of
this franchise.
(b) Director. The term "director" shall be the
City of Renton Director o Public Works .
(c) Utility. The term "utility" shall be
understood to mean , as the context may require , either the
Q) Grantee herein , or any other person , firm or corporation ,
N either public or private , which may hold a franchise to
C maintain and operate similar facilities in, upon, under, over,
Ga across and along any of the public rights-of-way, or portions
.4 thereof , within the area specified .
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(d) Other Governing Body. The term "other
r. governing body" shall be understood to mean such public
GID official or other public board or body as may have power and
jurisdiction over the rights-of-way and be legally vested with
jurisdiction, and authority to permit or regulate the
installation, maintenance of lines and other facilities , in,
upon, under, over, across and along the rights-of-way within
the specified area.
3. 02 Acceptance by Grantee of Terms and Conditions .
Grantee shall be deemed to have abandoned and forfeited all the
rights , privileges and authority hereby granted , unless within
thirty (30) days from the date hereof Grantee shall file with
the Council its written acceptance of this franchise , subject
to all of the terms , conditions , stipulations and other
obligations herein contained and enclosed , and in case the
Grantee shall fail to do so within the time aforesaid , this
franchise shall be null and void and of no effect .
3. 03 Exclusive Franchise Unconstitutional . This
franchise shall not be deemed or held to be an exclusive
franchise, and shall not in any manner prohibit the Council
from granting other and further franchises of any kind or
character that it may deem proper, in, upon, under, over,
across and along any right-of-way within the area described
herein, and this franchise shall in no way prohibit or prevent
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the public from using any such rights-of-way or affect the
jurisdiction of Renton over such rights-of-way or any part
thereof , or its power to make all necessary improvements ,
repairs or changes therein.
3. 04 Jurisdiction. This document shall not be
construed by Grantee , or any other person, persons or
corporations , as a warrant of title or interest in City roads
or rights-of-way but is intended to convey such rights-of-way
and interests only as to those roads and rights-of-way in which
the City has an actual interest.
3. 05 Regulation of Use and Control . The City granting
this franchise does not waive any rights which it now has or
may hereafter acquire with respect to City roads , rights-of-way
or other City property and this franchise shall not be
construed to deprive the City of any powers , rights or
privileges which it now has or may hereafter acquire to
regulate the use of and to control the City roads ,
rights-of-way and any other City property covered by this
franchise.
04
3. 06 Vacation. If at any time the City shall vacate
p any City road , rights-of-way or other City property which is
- Op subject to rights granted by this franchise , the City shall not
w4 be liable for any damages or loss to the Grantee by reason of
1,4 such vacation.
r* 3. 07 Responsibility for Damages . The Grantee agrees
AgID for itself, its successors and assigns , to indemnify and hold
the City harmless , its appointed and elected officials and
employees from and against all loss or expense , including
attorney' s fees and costs arising out of any negligent act ,
error or. omission by the District , its agents or employees
related to this Franchise.
3. 08 Requirement of Construction Permits . The said
Grantee, its successors or assigns , shall have the right and
authority to enter upon the City roads and rights-of-way
described herein for the purpose of constructing , extending ,
repairing or replacing , servicing and/or operating and
maintaining its lines and facilities and connecting the same
with consumer service lines , upon the condition that prior to
such work within the City roads or rights-of-way, the Grantee
shall first obtain the necessary permits approved by the
Director of Public Works.
Applications for said permits shall first be presented to
the Department of Public Works which may require copies of
plans , blueprints , cross-sections or such further detail of the
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work to be done as is , or may be required by ordinance in other
instances . Such work, whether done by the Grantee, its
contractors or third parties connecting to the Grantee's lines
or facilities , shall include necessary paving , patching ,
grading and any other reasonable and necessary repair or
restoration to the pre-existing City roads , rights-of-way and
shall be to the satisfaction of the director.
Allermits shall be applied for and
P pp given in the name of
the Grantee who shall be held responsible for all work done
thereunder, whether the work done thereunder is by the forces
of the Grantee, its contractors or by third parties connecting
to the lines or facilities of Grantee.
Before any work is performed under the permit , the
Grantee shall establish two or more reference marks to all
monuments and markers of every nature relating to subdivision ,
plats , right-of-way and all other surveys within the permitted
area . The reference points shall be so located that they will
01 not be disturbed during the Grantee ' s operation under the
permit . The method of referencing these monuments or other
points to be referenced shall be approved by the director
0 before placement . The replacement of all such monuments or
OD markers disturbed during construction shall be made as
'4 expeditiously as conditions permit and as directed by the
11.4 director. The cost of monuments or other markers lost ,
destroyed or disturbed and the expense of replacement by
OD approved monuments shall be borne by the Grantee. •
Grantor shall be named as an additional obligee on
performance bonds required by the District for any -work within
the franchise area herein.
3. 09 Providing "As-Built" Drawings. The developer/
contractor shall maintain on the jobsite project plans marked
to indicate City-approved plan revisions made in the field and
other details of construction. The drawings shall be made
available upon completion of the project to the District for
use and preparation of "as-built" records. The developer shall
be responsible for the cost of any required "as-built"
drawings . A copy of these "as-built" drawings shall be
provided to the City.
3. 10 Restoration of Right-of-Way. The Grantee shall be
responsible for and leave all City roads and rights-of-way in
good condition, after work on, under or adjacent to the City
roads or rights-of-way as the same were before such work. In
the event that the Grantee, its contractors or third parties
connecting to Grantee ' s lines or facilities under work permit ,
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shall fail to restore the City roads or rights-of-way to the
condition that pre-existed such work to the satisfaction of the
director, the City reserves the right to make such repairs or
restoration to such roads or rights-of-way, and upon
presentation of an itemized bill for such repairs or
restoration, including the cost of labor and equipment , the
Grantee shall pay the said bill within thirty (30) days . In
the event that suit is brought upon . failure to pay the bill
within thirty (30) days , and upon judgment being entered in
favor of the City, Grantee shall further pay all the actual
costs , disbursements and attorney's fees incurred thereby.
3. 11A Removal or Relocation of Facilities Installed by
Grantee. Upon the relocation or change of grade by the public
authorities of any right-of-way described herein, any lines or
facilities , erected upon or within any portion of such
right-of-way, shall , if necessary, be removed by the Grantee at
its own expense so that -it shall not interfere with the work of
relocation or change of -grade and shall be reset in accordance
110) with the provisions above set forth so that the location and
04 elevation of such line or facility shall conform to the new
grade and location of the right-of-way. Grantee shall
likewise , at its own expense , upon demand of the director,
relocate any line or facility which shall interfere with a
'r4 reasonably located driveway giving access to abutting
1.4
r4 property. The City shall in no event be held liable for any
damages to said Grantee that may occur by reason of the City' s
70 improvements, repairs or maintenance or by the exercise of any
rights are reserved in this section.
3. 11B Competing Service Areas . In the event that the
parties have existing sewer lines parallel to one another and
subject to, Chapter 35. 13A, et seq. and further subject to any
assertion of jurisdiction by the Boundary Review Board and any
subsequent decision of the Boundary Review Board , the parties
agree that should the Water District need to replace a sewer
line or perform such substantial repairs to the sewer line that
the cost of repairs is equivalent to the value of the sewer
line, then the City of Renton shall have the right to provide
service to the customers in the City limits in that service
area.
3. 11C Installation Codes . Grantee agrees that any new
sewer line installation or replacement done pursuant to this
agreement shall meet all requirements as set out in the current
or subsequently adopted :
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King County Water District No. 107 - Metro
Service Agreement and Specifications ;
King County Water District No. 107 Design and
Technical Specifications :
Parts II and III : Technical Specifications
- Sewer Extension ;
Part 1V: Technical Specifications -
Standard Sewer Details ;
Standard Specifications for Municipal Public
Works Construction of the American Public Works
Association ;
"Criteria for Sewage Works Design," State of
• Washington Department of Ecology - Revised Oct .
1985 ;
CNI
CWashington Administrative Code Section 173-240,
C) "Submission of Plans and Reports for Construction
OD of Wastewater Facilities" (DOE) ;
1.4 All other applicable state and federal
regulations and statutes regarding sewage works ,
40 design and hazardous waste disposal .
3. 12 Blasting Requirements. The laying , construction,
maintenance and operation of the Grantee ' s system of lines and
facilities granted under this franchise shall not preclude the
City, its accredited agent , or its contractors from blasting ,
grading or doing other necessary roadwork contiguous to the
Grantee ' s lines and facilities, provided that the Grantee shall
have seventy-two (72) hours notice of said blasting or
excavating in order that Grantee may protect its lines ,
facilities and property.
3. 13 Assignment of Rights to Third Party. The Grantee
shall have the right to assign its franchise provided , however,
no such assignment shall be of any force or effect unless
written notice of such assignment shall be filed with the Clerk
of the Council within thirty (30) days thereafter, together
with an acceptance by the assignee in writing of all the terms ,
covenants and conditions of -this franchise and an agreement of
such assignee to perform and be bound by all the terms and
conditions of this franchise.
All the provisions, conditions , regulations and
requirements herein contained shall be binding upon the
successors and assigns of the Grantee , and all privileges , as
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well as all obligations and liabilities of the Grantee, shall
inure to its successors and assigns equally as if they were
specifically mentioned wherever the Grantee is mentioned .
3. 14 Expiration and Renewal . All rights granted by this
franchise to City roads and rights-of-way shall apply to all
existing City roads and rights-of-way whether improved or
unimproved , and shall further include City roads and
rights-of-way acquired by the City after the date of execution
of this document.
If, upon expiration of this franchise , Grantee shall not
have applied for renewal of same , the City shall have the right
to remove such lines or facilities of the Grantee as are
reasonably necessary for the safe condition of the roads or
rights-of-way or facilities of other franchise holders and such
are reasonably necessary to remove for the construction,
renewing , altering or improving of such roads or rights-of-way,
and such as are reasonably necessary to remove for the
installation of lines and/or facilities of other franchise
04 holders . Grantee shall be liable for the costs incurred in
C such removal including the cost of labor and equipment ;
OD
C) provided that such removal is affected with two (2) years from
OD the expiration date hereof.
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w4 3. 15 Right to Amend . The City reserves for itself the
right at any time upon ninety (90) days written notice to the
QD Grantee, to so change , amend , modify or amplify any of the
provisions or conditions herein enumerated to conform to any
state statute or regulation relating to the public welfare ,
health, safety or right-of-way regulation as may hereafter be
enacted , adopted or promulgated and this franchise may be
terminated at any time if the Grantee's lines and facilities
are not operated or maintained in accordance withsuch statutes
or regulations.
3. 16 Environmental Compliance. Grantee must conform to the
Washington State Environmental Policy Act and any amendments
thereto.
3. 17 No Discrimination in Employment. In connection with
the performance of any work by the District or its agents
addressed herein, the District and its agents shall comply with
all federal , state and local codes, statutes and ordinances
prohibiting discrimination.
3. 18 Penalty for Violation of Conditions . If the Grantee
shall violate or fail to comply with any of the terms ,
conditions or responsibilities of this franchise through
neglect or failure to heed or comply with any notice given the
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Grantee under the provisions of this franchise, the Council
may revoke, amend, alter, change or supplement this
franchise provided , however, that the Council shall give
thirty (30) days written notice of its intention to do so,
during which period the Grantee shall have the opportunity
to remedy the failure to comply.
3 .19 Franchise Fee. The Grantee shall annually pay to
the City a franchise fee of five cents ($.05 ) per lineal
foot of transmission sewer lines owned by the Grantee, lying
within City rights of way as described in paragraph 2. 02
herein. City and Grantee agree that Grantee owns
transmission and service lines and is responsible for
maintenance thereof.
3. 20 Severance. This agreement shall be ` construed to
give effect to such purposes and uses under this franchise
which are consistent with economical and efficient service
04 rendered in the public interest. If any provision of this
C franchise, or its application is determined to be invalid by
court of law, then the remaining provisions of the franchise
GD shall continue and be valid unless the dominant purpose of
rl the franchise or the public interest herein is thwarted
1,4 thereby.
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OD 3 .21 Recording. This agreement shall be recorded with
the King County Office of Records and Elections immediately
upon its execution by the parties herein.
SECTION 4: RESERVATION OF RIGHTS; RENTON UTILITY TAX
4 . 01 The City and the District acknowledge disagreement
over the City's right to impose water utility taxes on the
District' s gross revenues derived from parties receiving
service from the District located within Renton's corporate
boundaries. The parties acknowledge the District's refusal
to collect and transmit such utility tax to the City.
Therefore, the City hereby expressly reserves all rights to
make claim against the District for the payment of such
utility taxes.
SECTION 5: RESERVATION OF RIGHTS; COMPREHENSIVE PLAN
APPROVAL
5. 01 The parties herein reserve all rights provided
under applicable Washington law to approve, conditionally
approve, or reject the general Comprehensive Plan as.
submitted by the other party.
CITY OF RENTON ( "Renton" ) KING COUNTY WATER DISTR T
NO. 107 ( "Di lict" )
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By_UQADIN CLA,. AuapflPf Q• By
I t s Mky or I t s l'i' /
ATTEST:
8
('ifs- ('1Prle
The undersigned hereby accepts all the rights and privileges
of the above granted franchise subject to all the terms,
conditions, stipulations and obligations contained herein.
RING COUNTY WATER DIST -CT
NO 107 ( "Dist )
By
Its
Dated this ,j4 day of November, 1987.
CITY3:51/10/30/87
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CAG 035-75
AGREEMENT
THIS AGREEMENT, made and entered into this / 9 1h day of
J (d r r , 1975 by and between the CITY OF RENTON, a municipal
corporation operating as a non-charter code city, hereinafter referred to as
'<' " "City" and KING COUNTY WATER DISTRICT NO. 107, a municipal corporation, herein-
after referred to as "District",
WITNESSETH:
WHEREAS, City and District are situated contiguously in King County, State
' of Washington; and
WHEREAS, City is presently preparing construction plans and call for bids
in connection with Local Improvement District No. 284 including the construction
of an interceptor sewer line extending from the present sewer collection trunk
line operated by the Municipality of Metropolitan Seattle, which line, when
extended, will run within the boundaries of District; and
WHEREAS, District likewise intends to utilize said interceptor sewer line
within its boundaries and in order to avoid duplication of such trunk facilities;
' and,
WHEREAS, District is willing to pay for the total cost of said line and to
promptly reimburse the City for all of such costs and expenses incurred for said
sewer line located outside the present b cundaries of Local• Improvement District
No. 284, further reference being hereby had thereto.
NOW, THEREFORE, IT IS HEREBY MUTUALLY AGREED AND COVENANTED by and between
' the parties as follows:
I. The parties enter into this Agreement under the authority of •
RCW 39.34.080.
2. Said Sewer line and appurtenances thereto shall be constructed through
and across certain areas within the City of Renton and Water District No. 107,
King County, Washington, as follows:
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SEE EXHIBIT "A"
3. District hereby gives and grants unto the City full authority for the
construction and Installation of said line within the boundaries of District;
it being understood and agreed that City's contractor, after award of bid to the
lowest responsible bidder, will perform all of such work within the boundaries of
said Local Improvement District and within District's territory as.more
particularly shown on the attached exhibit which is incorporated herein as if
fully set forth.
4. The District will pay for all such construction work within the
boundaries of the District, plus the difference between the cost of an 8-inch
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line and whatever size line is constructed on City property, it being agreed
that the larger line is for District's benefit. The cost of such oversizing
will be determined by the difference between responsible low bids for con-
structing an 8-inch and the larger size line within City's Local Improvement
District.
City will bill District the costs for which District is responsible herein.
District will pay said billings to the Director of Finance, City Hall, City of
Renton, Washington on or before the end of the month during which District has
had possession of any such billing by the second Monday thereof (it being under-
stood that vouchers for payment of monthly District liabilities are considered
for approval by District's Board of Commissioners at their regular meetings on
the second Wednesday of each month.)
Ho such billings shall be payable by District unless accompanied by a
certificate from City's Engineer that the construction work represented thereby
has been acceptably completed by the Contractor.
5. Upon completion of said sewer line installation and acceptance thereof
by the parties, said line shall be used, operated and maintained by the District
and the City, respectively, for service of their present and future customers so
as to transfer all sewage collected by the City and District within their
respective territories for delivery to the Metro trunk line and each party shall
pay its respective share therefor; no payment or service charge shall be
required by either of these parties against the other for the right and privilege
of such use after payment of construction costs as herein provided.
6. City shall have the right to authorize connections to said line or any
line tributary to said line by property owners situated within the boundaries
•
of the City of Renton, King County, Washington, as they now or may hereafter
exist, and upon such terms and conditions as the City may establish for making
such connections as per City's resolutions and ordinances. City shall have the
right to authorize connections to said line or any line tributary thereto by
property owners that may hereafter annex to the City and upon such terms and
conditions as provided for by the policies, rules and regulations of the City.
7. District likewise shall have the right to authorize connections to said
line by property owners located within the boundaries of said District and upon
such terms and conditions as the District may establish from time-to-time for
making such connections.
8. Once said sewer line has been installed and accepted from the contractor,
all costs of maintenance, repair and operation incurred for said interceptor line
shall be borne solely by the City as to that section of the line located within
the boundaries of the City; all of such maintenance, repair and operation expenses
as to the line located outside the boundaries of the City shall be borne solely
by District. Each of the parties shall be responsible for and promptly repair
and remedy any damages or defects occurring to, on or about said line within its
respective territorial jurisdiction.
9. Title and ownership of said line, upon completion and acceptance thereof,
shall be in the City as to .that portion thereof within City's Local
Improvement District, and in District as to the remainder.
10. The capacity of said line is agreed to be 2. 15 million
gallons per day (mgd) . District's utilization of said line is
limited to 1. 65 mgd. and City's to . 50 mgd. , but each party
'. l
hereto -warrants and guarantees the other's right to utilize said
line for the gallonage per day to which each party is herein
limited. Whichever of the parties causes said line to exceed its
! .total gallonage per day shall be financially responsible for
implementing delivery of its excess sewage to the Metro trunk line
by mutually agreeable arrangements.
City assumes the responsibility for measuring total daily
gallonage in the line and to promptly notify District when said
line exceeds its capacity.
11. It is further anticipated that the total cost of said
construction to be borne by District, as herein above set forth,
is approximately $120, 000. 00 less any monies made available from
Federal and State grants; City agrees to advise District
of any substantial change in said estimate. District further
warrants that proper funds have been budgeted by District
for payment of the aforementioned improvements within its boundaries
and that District has lawful right to make such
9 payments unto City
as hereinabove set forth.
A portion of all governmental grant funds received by City
in connection with construction of said line shall be credited by
City to the District's obligations hereunder in the ratio which
District's share of the cost of the line bears to the total cost
of the project. District will be promptly notified of the
receipt of said funds and of the amount thereof to be credited
to District. Such credits will be promptly applied by City
against District's liabilities hereunder until exhausted. If
application of such credit results in an overpayment by District,
City will promptly reimburse District accordingly.
12. Each of the parties hereby agrees, in order to effectuate
the terms of this Agreement, to execute and deliver unto the other,
whenever reasonably necessary, appropriate permits, easements and
like documents, and to co-operate with the other to assist in
compliance with the Washington Inter-Local Co-operation Act (RCW
39.34 et seq) and/or any other laws applicable to the parties or
the subject matter.
13. The duration of this Agreement shall be perpetual until
- 3 -
mutually rescinded or amended by the parties or by a Court
of
competent jurisdiction.
IN WITNESS WHEREOF, the parties have hereto set their hands
and seals this /914 day of , 1975.
KING COUNTY ATR DIS T NO. 107 CITY OF RENTON,• WASHINGTON
Dy 1(VBy Y--'
Chairman
•By .> • 9
BY 24104 , c? Ea1
/ SecretaryleRo 'TEM City Clerk
• '
•
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EXHIBIT "A"
. i
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The following description located in King County, Washington described
to centerline route of the proposed Interceptor Sewer from its point of '
discharge into the Trunk Sewers of the Municipality of Metropolitan Seattle
to the northerly terminus of the proposed interceptor sewer.
Beginning at the North Quarter corner of Section 32, T 24 N, R 5 E, W.M. ,
thence south 1°41 '46" West, a distance of 1098.00 feet thence North
90°00'00" East 15.00 feet to the true point of beginning; also being existing I '
Metro Manhole.
1 . Thence North 1°41 '46" E 544.00 feet
2. Thence South 88°46'56" E 274. 00 feet
3. Thence North 0°45'49" E 1185.00 feet
4. Thence North 88°40'56" W 322.00 feet
5. Thence North 0°47' 18" E 700.00 feet
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RESOLUTION NO. . 2413
WHEREAS the City of Kent has within its municipal
boundaries a portion of land bordering S. 160th , also known as
S.W. 43rd, which area is not presently served by sewers , and
WHEREAS the City of Kent does not have at present the
ability to provide sewer service to that portion of land, and
WHEREAS as part of the widening project on S. 180th
Street (S .W. 43rd) , the City of Renton plans to install sanitary
sewers , and
WHEREAS the City of Kent has previously reouested the
City of Renton to serve previously described land with the City of
Renton 's sanitary sewer , and .
WHEREAS it is agreed between the City of Renton and the
City of Kent that the City of Renton shall have the right to provide
sanitary sewer service to the City of Kent parcel along S. 180th
(S.W. 43rd) described as Parcels 36 through 40 on the Exhibit
attached hereto and it is further agreed that the City of Renton
shall have the right to charge one and one-half times the normal
sewer service rate plus its normal connection charges , System
Development Charges , tap-in charges , and Community Facility Charges
as are applicable , now therefore'
THE CITY COUNCIL OF THE CITY OF RENTON, WASHINGTON, DO
RESCLVE AS FOLLOWS :
SECTION I : The above` recitals are found to he true
and correct in all respects .
SECTION II : The Mayor and City Clerk are hereby authorize,
to enter into an InterlocalAgreement with the City of Kent to
provide sewer service to those parcels along S . 160th Street as
per Exhibit "A" attached.
PASSED BY THE CITY COUNCIL this 3rd day of August , 1961 .
e ores a ty C er
APPROVED BY THE MAYOR this 3rd day of August , 1981 .
. !!
gii ara . Shinpoch, Mayor
. L.!
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Approved as to form;
Lawrence J . Warren , City—ATTEFay
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CAG 072-85
AGREEMENT ORIGINAL
THIS AGREEMENT made and entered into this /6day e�fj6�rf�.li 1985 by
and between the City of Renton, a municipal corporation, herein�f`tterreferred to as
the "City" and King County Water District #128, a municipal corporation, hereinafter
referred to as the "District", both duly authorized and existing by vertures of the
laws of the State of Washington.
WITNESSETH
WHEREAS, the parties to thisagreement each have the power to perform the terms
and conditions of this agreement, and
= WHEREAS, the District has or is about to, assume the ownership, operation and
maintenance of the King County Sewer and Drainage District #4, and the Olsen
District for the purposes of providing sanitary sewer service, and
WHERPAS, the District has or is about to assume the King County agreement with
First City Development Corporation to-provide sewer service thru the District system,
and
WHEREAS, Renton has adopted a policy of requiring annexation to the City of
,,r Renton prior to extension of sewer service outside its corporate limits in order to
ensure that all areas annexed to Renton are as far a oss bye developed to City
standards, , 6•P, •.
_ bes ,n1 '-esY' -Tb ad/i r�
WHEREAS, in the City and the District's4future ultimate service areas for
sanitary sewers that service overlaps and system duplications be avoided,
NOW, THEREFORE, IT IS COVENANTED AND AGREED AS FOLLOWS:
1. PURPOSE: The purpose of this agreement shall be to establish generalized
service boundries between the District and the City.
2. BOUNDRIfSThe District and the City agree to service within the generalized
service area map of Exhibit 01 and not to service inside the other agency's
area without consultatiori .and joint approval.
IN WITNESS WHEREOF the parties have hereunto set their hand and seals the day
and year first above written.
KING COUNTY WATER DISTRICT 0128 CITY OF RENTON
Adopted at the regular meeting of
the Board_aff .Th issio/•' s
Barbara Y. Shinpoch, Mayor
• _ s'/L4 �
Maxine E. Motor, City Clerk
4242:irl115:12
Approved as to legal form:
STATE OF WASHINGTON)
)ss
OOUNTY OF KING )
THIS Is to certify that on this /'TiA day of 6zU a
19
before me, the undersigned Notary Public, personally appeared
and
to me known-to to theeA..
end
acknowledged to me that executed the foregoing Instrument for
said as Its free and voluntary act and deed, for
-uses and purposes therein stated, and upon oath stated that such execution of
said instrument by
— is duly and regularly authorized.
GIVEN under my hand an official seal the date last above stated.
- i
.v: - OPAIPP * .•
.mmr4:
otary Public In and for the State
•
of Washington residing at Seoirr- -
•
STATE OF WASHINGTON )
) ss
COUNTY OF KING
This Is to certify that on this day of
before me, the undersigned Notary Public, personally appeared
/j. ig4ig
endiciuc& p( - > ii
to me known to be the duly qualified and acting Mayor and City Clerk
respectively, of the City of Renton, Washington, and acknowledged that they
executed the above and foregoing Instrument for the City of Renton as the
free and voluntary act and deed of said City for the uses and purposes
. therein set forth, and upon oath stated that such execution of said
insfrument by them Is duly end regularly authorized and that the seal
attached thereto Is the corporate seal of the City of Renton.
Giventinder my hand and official seal this/67 . day of 4G'. 19.1r
•
! I•
Notary Pub1 Orr' and for the State
• of Washington, residing at Renton
ti
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EXHIBIT_ 1 �.
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BRYN MAWR -___1
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�— .LAKERID E
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�,.s is - • -�• , i-12:--"3 > - ▪ ;-_;:�f_�� SEWER-DISTRICT
C ' • S• ••. lo.
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i.. . . . KING Y' ; •• . _ , .. r S;.-I : ---
COQ. , • - �__� ter- ..
• --1 ' WATER DISTRICT #.128 • • .I ..._.1-4 . I _-
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3--,..k._:.;! _ _ -- I CITY LIMITS
GENERALIZEDSANITARY SEWER S
• •' _ - __ ! .
CITY OF RENTON FUTURE . '
SERVICE BOUNDARY BETWEEN - — -Y-- ..—'
•
S.�__�.- ..- ..� SEWER SERVICE AREA : -
•
RENTON AND`W.D. 128 ._ ANNEXATION TO RENTON .,
- �_-- -- ^ : .. - REQUIRED-
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CI RENTON c .=a.
.,� . RIENTON CITY LIMITS._ ,i. _... "'` __
CAG 039-74
AGREEMENT FOR PROVISION •
OF SEWER SERVICE
THIS IS AN AGREEMENT between the City of Renton and
Cascade Sewer District regarding the provision of sewer service
to the areas defined.
I.
DEFINITIONS AND TERMINOLOGY
(1.) . "The City" is the City of Renton, a municipal corpor-
ation in King County, Washington.
(2.) "The District" is the Cascade Sewer District, also a
municipal corporation in King County, Washington.
,(3•) "Safecare-Careage" is the Safecare Company, Inc, and
the Careage Corporation, otherwise known as Safecare-Careage
Venture No. 7, one of the contracting parties to the Safecare-
Careage Contract hereinafter defined.
. (4.). "The Safecare-Careage Contract" is that contract be-
tween the City and Safecare-Careage dated the llth .day of August,
1970.pursuant to which the City authorized Safecare-Careage to
construct a sewer main of approximately 1,670 lineal feet of
eight inch (8") sewer pipe and six manholes in Springbrook Road
extending approximately 570 feet south of the center line of
South 180th Street on the east side of Springbrook Road and
approximately 1,100 feet north of the center line of So. '180th
•
Street on the west side of Springbrook Road and connecting to
existing manhole R 18-25. •
:(5.) "The Springbrook Line" is the sewer line constructed
pursuant to the Safecare-Careage Contract.
(6.) • "Scott's Terrace" is the property, the plat of which
is recorded as the plat of Scott's Terrace in Volume 72 of Plats,
pages 39 and 40, of the records of King County.
(7.) "The Radovich Property' is the entire parcel of land
bounded on the south and east by Carr Road, on the north by the
-1- .
south line of Scott's Terrace, and on the west by the Talbot
Road.
(8.) "The Talbot Road" and the "Springbrook Road" are in
effect a single street, the northerly portion of which is com-
monly known as Talbot Road, and the southerly portion of which
is commonly known as the Springbrook Road.
(9.) "So. 180th Street" is a street intersecting Talbott
Road, and within the City of Renton said street is known as So.
43rd Street on the City's numbering system. As said street ex-
tends easterly from its intersection with the Talbot and Spring-
brook Roads, it is known as Carr Road.
(10.) "The existing crossing" is a short main extension of
the Springbrook Line. crossing the Talbor Road from manhole No. 2
37, to a spot near the boundary of Lots 1 and 2 of Scott's 'Terrace.
(11.) "The proposed crossing" is a main extension' of the
. Talbot Road Line proposed to be constructed from manhole No. 1
to a spot near the boundary of Lots 4 and 5 of Scott's Terrace.
. (12.) "U.L.I.D. 11" is a Utility Local Improvement District,
• numbered 11, being formed by Cascade Sewer District, and includes
'
Lots 12, 13, 14 , 15, 17, 18, 19, 20, 21, 22, 27 and 28 of Scott 's
Terrace, and that portion of the northerly 150 feet of the Rad-
ovich Property which lies east of the southerly prolongation of
the westerly boundary of Lots 17 and 18 of Scott's Terrace.
(13.) "METRO" is the Municiplaity of Metropolitan Seattle,
(14.) "The METRO Line" is a sewer trunk built, owned and
maintained by METRO, into which the Springbrook Line empties
at approximately the intersection of Talbot Road and South 177th
Street. The METRO Line continues generally easterly along South
177th Street, then continues generally southeasterly along
98th Avenue South, and then continues easterly.
II.
FACTUAL BACKGROUND
(1.) Under date of August 11th, 1970, the City and Safecare-
Careage entered into the Safecare-Careage Contract which permitted
Safecare-Careage to build the Springbrook Line hereinabove
defined,
(2•) Said contract provided for reimbursement to Safecare-
.Careage, subject to the laws and ordinances of the City of Renton,
•
by the owner .of real .estate who did not contribute to the orig-
•
inal cost of the improvement and who subsequently wished to tap
into or hook onto or use the facilities.
(3.). Said contract also reserves to the City the right
to make or cause to be made extensions of or additions to the
above-mentioned improvement and to allow service connections
to be made Co said extensions or additions without liability on
the part of the City.
. (4 .) The properties, the, owners of which are to be charged for
tapping into or hooking onto the Springbrook line, and the amount
and rate of said charges for said properties , have already been
determined in accordance with Ordinance No. 2847 of the City of
Renton. , Of the properties involved in this Agreement, they are
the properties, sewer service to which is to be provided by the
City. and not by the District under this Agreement.
(5.) The City is presently providing sewer service to Lots
1 and ,2 of Scott's Terrace by means of the existing crossing.
(6.) . No formal agreement for the provision of sewer service
in the subject area has been entered into between the City and
,the District. .
(7.) The City also• proposes to provide sewer service to
Lots 4 and 5 of Scott's Terrace by permitting the construction
of the proposed crossing.
.(8.) The City is prepared to furnish sewer service through
the Springbrook Line to Lots 3, 6, 7 and 8 of Scott's Terrace.
(90 Although all of Scott's Terrace and the Radovich Property
are within the Cascade Sewer District and ire outside the limits
of the City, each party recognizes that sewer service .to Lots
1, 2, 3, 4, 5, 6, 17, 8 and 16 of Scott's Terrace and to that portion
-3-
•
of the Radovich property which lies to the west of the
southerly prolongation,of the westerly boundary of Lots 17
and 18 of Scott's Terrace can be provided by the City through
the Talbot Road Line sooner than such service could be pro-
vided by the District, and that sewer service to these prop-
erties by the City and the payment to the City of the charges
necessary under the Safecare-Careage Contract as already de-
termined pursuant to said Ordinance No. 2847 has and will pro-
vide the funds for reimbursement of Safecare-Careage under the
contract.
(10.) The District proposes to serve the properties within
U.L. I.D. 11 by utilizing the existing crossing and the proposed
crossing as hereinabove defined.
(11.) Both the City and the District have identical agree-
ments with METRO relating to the METRO Line, permitting both
the City and the District to make sewer service available to
properties along said line by allowing said properties to be
hooked onto the METRO Line, making an appropriate charge to the
owners of said properties .and remitting the same to METRO as
payment against the cost of .the construction of said line.
(12.) Because of the possible duplication of. charges, and
the question of the proper agency to'provide sewer service to
various properties referred to above, the parties hereto do
desire by this Agreement to formalize their mutual responsibil-
ities and rights in the area.
III.
MUTUAL COVENANTS AND AGREEMENTS
In consideration of. the covenants herein contained,
and in consideration of the benefits to each of the parties to
be derived from this Agreement and the performance thereof, and
-4-
because of the facts stated above, the parties hereto do agree
and covenant as follows:
(1.) The City will make sewer service available for that
portion of the Radovich Property lying west of the southerly
prolongation of the westerly boundary of Lots 17 and 18 of
Scott's Terrace and for Lots 1, 2, 3, 4, 5, 6, 7, 8 and 16 of
Scott's Terrace, and the District will not attempt to provide
sewer service for said areas.
(2.) The City will authorize an extension of or addition
to the Springbrook Line by permitting the construction of the
proposed crossing hereinabove defined. Said crossing must be
in accordance with the standards and requirements of the City
as to design and construction. The cost of the construction
of said proposed crossing will be borne by the District or
by private owners with whom the District may contract, or both,
•
but the proposed crossing will be constructed at no costto
•
the City.
(3.) When the proposed crossing is completed, it will be
transferred to the City and will be available for the use of
the City to provide sewer service to those lots in Scott's
Terrace for which the City is to make sewer service available
under this Agreement.
(4.) Other than the properties described in Paragraph
(1.) of Section III of this Agreement, the District will make
sewer service available for all other properties within its
boundaries in the area of U.L.I.D. 11.
(5.) The City agrees that the District may, without pay-
ment of any area connection charges, connection fees, latecomer
fees, extended service fees, or any fee of any kind, but at the
District's own cost of construction, connect its mains to the
existing crossing to the proposed crossing when constructed,
provided that the design and construction of the District 's
-5-
,
facility so connected meet with the approval of the City.
(6.) Without any cost to the City, the District will
place a manhole at the easterly end of the existing crossing
l I
and will connect the existing side-sewer to this manhole. The
,District will also cause a manhole to be constructed at the
easterly end of the proposed crossing, and each of said manholes,
when completed, will be transferred to the City to own as
part of their main extensions consisting of the existing cros-
sing and the proposed crossing. Said manholes will meet the
• design and construction requirements of the City.
(7.) Unless it has the prior consent of the City, the I
District will not attempt to make sewer service available to
those properties lying immediately south of So. 180th Street
and in the immediate vicinity of the Sringbrook Line which,
without the construction of main extensions which would be
exempt from any charges under Paragraph S of the Safecare-
Careage Contract, can be served by that portion of the Spring-
brook Lineas presently constructed.
• (8.) Although portions of the lines hereinabove described
will be jointly used by the City and the District, each of
the parties hereto will maintain its own lines at its own
cost. .
(9.) If all of the properties which are to be served by
the District under this Agreement are annexed to and become
a part of the City, the District will, without charge to the
City, transfer to the City the entire sewer system to be con-
structed by the District in U.L.I.D. 11 as described in this
Agreement.
(10.) All facilities constructed by the District which are
to be transferred to the City under this Agreement will be
transferred by an appropriate Bill of Sale in standard form.
(11.) The District will hold the City harmless from any
-6-
claims made against the City and will protect the City from
any liabilities in connection with any of the work to be
done by the District.
(12.) Nothing in this Agreement as to which party shall pro-
vide sewer service to particular properties shall be construed
as to require the provision of such service except in accord-
ance with the Ordinances or Resolutions of the party, and
upon payment to the party of all proper charges by the property
owner.
IN WITNESS WHEREOF, the parties hereto have caused
this Agreement to be executed by their duly authorized
officers and to have their respective seals affixed hereunto.
DATED this /Q'day of /yOVF_ MBr /Q , 1974 .
CITY OF RENTON
A municipal corp ration
Ey
• Nayor
IIY
ALLeit, Ci
11
Clerk
CASCA E SEWER ISTRICT
By -'-� L•— ��
CA:
esiden ?Commissioner
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BY �
ommis_sioner
"f
Secretary Commissioner
•
.7-
CAG-083-91
I
CITY OF RENTON & SOOS CREEK WATER AND SEWER DISTRICT
AGREEMENT FOR THE TRANSFER OF FACILITIES
AND FOR
THE ESTABLISHMENT OF SERVICE BOUNDARIES
I I
THIS AGREEMENT, made and entered into thisG,- , day of ��
19q/ by and between SOOS CREEK WATER AND SEWER DISTRICT, Washington
municipal corporation, hereinafter referred to as "THE DISTRICT", and the CITY OF
RENTON, a Washington municipal corporation, hereinafter referred to as "RENTON",
both being duly organized and existing under and by virtue of the laws of the State
of Washington,
WITNESSETH:
WHEREAS, THE DISTRICT is qualified to provide water and sewer service
within its prescribed area; and •
WHEREAS, RENTON is qualified to provide public services, including water and
sewer service, within its prescribed area; and
WHEREAS, THE DISTRICT has constructed, and has managed, operated, and
maintained certain water and/or sewer facilities which exist in areas which have been
annexed by RENTON, and which can most efficiently be managed, operated, and
maintained by RENTON in conjunction with other facilities in the City; and
WHEREAS, bond covenants, resolutions, and other agreements of THE
DISTRICT require that certain steps be taken, and certain financial arrangements
made, as part of any transfer of facilities from THE DISTRICT to another party; and
WHEREAS, it is in the best interest of both parties to have RENTON administer
the collection of General Facilities Charges on behalf of, and to be passed on to, THE
DISTRICT for those areas herein described to be transferred to RENTON for
management, operation, and maintenance; and
WHEREAS, it is in the public interest for the parties herein to enter into an
agreement to provide for the efficient planning and development of new water and
sewer services in areas which may be served by either, or both, of the parties herein;
now therefore,
4a:O400400g•ooi Page 1 of 11 I
MAY 2 31991
IT IS HEREBY AGREED by and between the parties hereto as follows:
1. Water service by THE DISTRICT within RENTON City Limits. THE DISTRICT
shall provide water service to the properties within THE RENTON City Limits
described in attached Exhibit "A", and as shown in attached Figure 1 .
Any new construction within the current RENTON City Limits by THE DISTRICT
for water service shall be in compliance with RENTON requirements including;
materials, techniques, fire flow, and all other standards. Existing watermains
are excepted, provided that any upgrading or replacement shall be in compli-
ance, with said RENTON requirements.
Future transfer of service areas shall be by mutual agreement to be determined
at that time. Any new or replacement facilities after the date of this agreement
shall be transferred to RENTON at no cost if constructed by developer, but
RENTON shall reimburse THE DISTRICT for the value of any DISTRICT
construction not yet fully depreciated, at an amount equal to the remaining
amount to be depreciated.
2. Water Service by THE DISTRICT Within RENTON City Limits Without
Annexation to THE DISTRICT. THE DISTRICT shall provide water service to the
following areas within the City Limits which are not within DISTRICT
boundaries, and by agreement will not require annexation (also shown in
attached Figure 1):
a) Spring Glen Elementary School.
b) The West 340.00 feet of the East 670.00 feet of the South 305.00 feet
of Section 20, Township 23 North, Range 5 East, W.M., less City and/or
County Road. .
Any new construction within the RENTON City Limits by THE DISTRICT for
water service shall be in compliance with RENTON requirements including:
materials, techniques, fire flow, and all other standards. Future transfer of
service area shall be by mutual agreement to be determined at the time any
facilities change hands.
3. RENTON Provide Water Service Within DISTRICT Limits. The following areas
have already been transferred to RENTON for service, or are herein released to
RENTON for provision of water service by RENTON at no further charge for the
transfer of such service area. THE DISTRICT releases all claim to water service
within the areas described in Exhibit "B", and as shown in attached Figure 1 .
4-7:0400403g.001 Page 2 of 11
•
4. Water Service Area Boundary Between RENTON and THE DISTRICT. The
attached Exhibit "C" describes the line separating the RENTON water service
area from THE DISTRICT water service area. RENTON shall provide ultimate
service for the area North and West of the line described. THE DISTRICT shall
provide ultimate service for the area South and East of the line described. This
line is also shown in attached Figure 1 .
5. PONDEROSA ESTATES: Sale of Sewer System to RENTON. The facilities
listed below (and on As-Built page A-43 referenced) and the area as described
in attached Exhibit "D", and as shown in attached Figures 2 and 3, are hereby
transferred (sold) to RENTON by THE DISTRICT. THE DISTRICT agrees to
allow the Ponderosa Estates sewer mains to remain connected to lines
belonging to THE DISTRICT. THE DISTRICT further agrees not to charge
RENTON for any maintenance of the lines so impacted, so long as RENTON
agrees to, and continues to, notify THE DISTRICT whenever maintenance of
the lines in Ponderosa Estates will be performed. Furthermore, that the
RENTON maintenance crews take steps to minimize the amounts of solids or
chemicals which would otherwise be released into the downstream lines as a
result of such maintenance. This will allow THE! DISTRICT to coordinate •
maintenance with the action of RENTON maintenance operations. The lines so
included are as follows:
Soos Creek
(Cascade) Manhole Run (Will
As-Built Include Upstream Length Diameter
Page No. Manhole) (Feet) (Inches) Street
PONDEROSA ESTATES
A-43 No. 104 to 207 400.0 8 Conc. 116th Ave. S.E.
A-43 No. 100 to 201 173.0 8 Conc. 118th Ave. S.E.
A-43 No. 201 to 202 96.0 8 Conc. 118th Ave. S.E.
A-43 No. 202 to 203 250.0 8 Conc. 118th Ave. S.E.
A-43 No. 203 to 204 210.0 8 Conc. S.E. 156th St.
A-43 No. 203 to 205 300.0 8 Conc. 118th Ave. S.E.
A-43 no. 205 to 206 308.0 8 Conc. 118th Ave. S.E.
a) Latecomers: None due.
b) General Facilities Charge: None due.
c) Portion of Monthly Service Charge to Cover Bond Indebtedness
4-7:0400400e.00I Page 3 of 11
As described in Soos Creek Water and Sewer District Resolution No.
0145C, based upon outstanding debt, the fraction of THE DISTRICT
represented by the area of concern, and the portion of the indebtedness
which is to be paid by the monthly service charges (and not by U.L.I.D.
assessments). That amount is:
Ponderosa Estates = $17,488.10
Amount calculated as follows:
Number of Connections in Ponderosa Estates: 35
Number of Connections in Sewer Area: 18,619
Debt.Retirement in 1990: $1,881,554
Amount Retired by U.L.I.D. Assessments in 1990: $771,900
• Amount Retired by Service Charge in 1990: $1,109,654 (Difference)
Amount Retired per Connection in 1990: $59.598
Debt Retired in Full in 2003. Remaining Years: 12
Present Value to Cover Indebtedness (6%): 35 Connections x $59.598 x
8.38384 = $17,488.10
RENTON agrees to compensate THE DISTRICT the amount of $17,488.10 as detailed
above, for this portion, within 60 days after the date of this agreement.
6. SPRINGBROOK AREA: Sale of Sewer System to RENTON. The facilities
involved are as listed below (and as shown in figure 4 and on As-built pages
referenced, Figures 5-10) and the area is as described in attached Exhibit "E".
Soos Creek Manhole Run
(Cascade) (Will Include Length Diameter
As-Built No. Upstream Manhole) (Feet) (Inches) Street
K-25 No. 80-14 to 80-15 242.0 18 Conc. SR 167
(Crossing)
K-35 No. 80-15 to 34-0A 140.3 12 PVC S. 192nd St.
K-35 No. 34-0A to 34-1 25.9 12 PVC S. 192nd St.
K-35 No. 34-1 to 34-2 353.7 12 PVC S. 192nd St.
K-35 No. 34-2 to 34-3 375.0 12 PVC .S. 192nd St.
K-35 No. 34-3 to 34-3A 105.5 12 PVC S. 192nd St.
K-35 No. 34-3A to 34-4 233.5 12 PVC S. 192nd St.
•
4-7.osoomE.o01 Page 4 of 11
i
Soos Creek Manhole Run
(Cascade) (Will Include Length Diameter
As-Built No. Upstream Manhole) (Feet) (Inches) Street
K-36 No. 34-4 to 34-5 368.0 12 PVC S. 192nd St.
K-36 No. 34-5 to 34-6 147.0 12 PVC S. 192nd St.
K-36 No. 34-6 to 34-16 399.0 8 PVC 96th Ave. S.
K-36 No. 34-16 to 34-17 249.1 8 PVC 96th Ave. S.
i
K-37 No. 34-6 to 34-7 400.0 8 PVC 96th Ave. S. ,
K-37 No. 34-6 to 34-12 403.0 12 PVC S. 192nd St.
K-37 No. 34-12 to 34-13 377.2 12 PVC S. 192nd St.
K-37 No. 34-13 to 34-14 192.9 12 DIP Easement
K-37 No. 34-14 to 34-15 288.0 12 PVC Easement
K-38 No. 34-7 to 34-8 400.0 8 PVC 97th Ave. S.
K-38 No. 34-8 to 34-9 400.0 8 PVC 97th Ave. S.
K-38 No. 34-9 to 34-10 400.0 8 PVC 97th Ave. S.
K-38 No. 34-10 to 34-11 400.0 8 PVC 97th Ave. S.
K-40 No. 34-17 to 34-26 179.0 8 PVC 96th Ave. S.
a) Latecomers (From U.L.I.D. No. 34)
Property 062205-9002 440 L.F. @ $35.89 per Lineal Foot
Property 793100-0120 170 L.F. @ $35.89 per Lineal Foot +
$275.00 for Stub
Property 062205-9002 latecomer ($15,791.60) to be collected by , ,
RENTON and paid through to THE DISTRICT at the time of connection.
-- i
Property 793100-0.120 is now RENTON property. However, it is in the
"watershed" and will never be developed., and is therefore not benefitted _
by the sewer. It is agreed that no payment need be made to Soos Creek
at this time. If the property is ever developed, or a facility requiring
sewers is placed on the property,then a latecomer amount of $6,376.30
shall be paid to THE DISTRICT by RENTON within 60 days after the date
of connection to the sewer.
4-7:0403400g.001 Page 5 of 11
b) General Facilities Charge
The 1991 General Facilities Charge for this basin is $0.0531 per square
foot, with a minimum of $531 .00 per unit, or customer equivalent.
Payable,at RENTON's discretion, to THE DISTRICT by RENTON, on the
schedule as listed below. THE DISTRICT shall advise RENTON of current
General Facilities Charges, and any changes to those charges as they
occur. Area is described in attached Exhibit "E", and shown in attached
Figure 4.
Tributary Area: 6,000,000 S.F. (Total area, less 25% for rights-of-
way.)
Option No. 1 - General Facilities Charge of $199,200 if paid by
• June 1, 1991.
Option No. 2 - General Facilities Charge of $258,900 if paid be-
tween June 2 and December 31, 1991.
Option No. 3 - If payment has not been made by December 31,
1991, the current General Facility Charge must be
paid at the time of connection.
If not paid according to Option No. 1 or Option No. 2 above, RENTON
shall inform THE DISTRICT whenever an agreement is made for sewer
service in this area by RENTON, and RENTON shall pay said charges to
THE DISTRICT in .accordance with Option No. 3, after the property
owner has made such payment to RENTON, as described in Section 7.
Total payment will be dependent upon when the charge is paid, the rate
at the time of connection, and the number of units developed.
c) Portion of Monthly Service Charge to Cover Bond Indebtedness
Amount for Springbrook Area:' $7,994.56
Amount calculated as follows:
Number of Connections in Area: 16 (of 18,619 in Total
District)
Amount Retired by Service
Charges in 1990: $1,109,654 ($59.598 per
Connection)
4-7:0400400g.001 Page 6 of 11
Present Value of 12 Years of --
Repayment: 16 Connections x S59.598 x 8.38384
= $7,994.56
RENTON agrees to compensate THE DISTRICT the amount of $7,994.56
as detailed above, for this portion effective the date of the agreement
and due within 60 days.
7. Notification of THE DISTRICT of New Connections, and Payment of THE
DISTRICT's General Facilities Charge. Notification shall be made by RENTON
to THE DISTRICT at the time of connection of any property in the Springbrook
Interceptor Service area. The notification shall be accompanied by a plot plan,
or letter, indicating the square footage of the property, and including payment
to THE DISTRICT of THE DISTRICT's General Facilities Charges, as described
in Section 6b, and based upon the then current rate, as reported to RENTON
by THE DISTRICT. The General Facilities Charge shall be based upon the area
of the property connected, or the number of dwelling units (or single-family
equivalents if not residential), whichever is larger; except that, unserviceable
and unusable portions of the property are not included in the calculation of the
General Facilities Charge, except for those portions which also benefit the
development of the property, such as being included in the normal setback
requirements, or landscape requirements. Included in this exempt category
are: roads and similar rights-of-way, open space required, wetlands, unusable
steep-slope areas, and the setbacks for these restrictive conditions.
8. Transfer of Easement and Right-of-Way Documents. THE DISTRICT shall
officially transfer the right-of-way documents for the facilities herein sold to
RENTON, and RENTON agrees to accept responsibility for all maintenance or
other actions required by said documents. THE DISTRICT shall not have any
liability for disputes arising over said rights-of-way or easements so transferred,
except that any disputes arising due to the actions of THE DISTRICT prior to
said transfer shall not be affected by this section.
9. Disclaimer From Third Party Liability. The DISTRICT shall disclose any and all
known defects or problems of or in the facilities herein transferred to RENTON.
THE DISTRICT shall not be liable for any claims by third parties arising from
acts or damages by RENTON or its customers in using the facilities sold to
RENTON pursuant to this Agreement.
4-7:0400400g.001 Page 7 of 11
r .
10. Sewer Service Area Boundary Between RENTON and THE DISTRICT. With the
above transfer (sale) of existing facilities and service. area, and reasonable
service area limits corresponding to this action, the line separating the RENTON
service area from THE DISTRICT service area for sanitary sewers is described
in attached Exhibit "F", and is shown in attached Figure 11 . RENTON shall
provide ultimate service for the area north and west of the line shown. THE
DISTRICT shall provide ultimate service for the area south and east of the line
shown.
11. Maintenance of Existing Facilities. THE DISTRICT and RENTON will each
provide maintenance for its own facilities. If there are any serious problems
due to a discharge which can be identified, and for which the source can be
identified, the individual or company responsible will be held liable for damage.
If a lack of maintenance, or if the type of maintenance by either RENTON or
THE DISTRICT is identified as the source of said problem, then the party
creating, or allowing,-the situation_shall be responsible and shall pay the costs
of repair. In case of dispute over the source or responsibility of said problems,
the Municipality of Metropolitan Seattle (Metro) shall serve as arbitrator in
identifying and quantifying said problems provided that said arbitration and/or
any reports generated by an investigation by Metro, shall be binding upon both
parties in resolution of the dispute.
12. Allowable Capacities in the Lines being Transferred, and at Points Further
Downstream. There are no restrictions on the capacity of the sewers from
Ponderosa Estates as long as they are consistent with the current use of the
properties. There are currently 35 single family residences, and the property
is fully developed. If this condition ever changes, a further review of the
capacity of thesystem shall be performed, and an additional agreement shall
be developed between the parties.
Capacity for the system in the Springbrook drainage basin shall be as follows:
AT TIMES OF SIMULTANEOUS PEAK FLOW
SOOS CITY OF RESERVED
CREEK RENTON FOR CITY OF
(gpm) (gpm) KENT (gpm)
S. 192nd Street, at and below 1500 600 0
MH 34-3
4-7:0400400g.001 Page 8 of 11
S. 192nd Street, at and below 1800 1500 0
MH 34-0A
S. 192nd Street, at and below 3900 1500 0
MH 80-14
West of MH 80-14 3900 1500 400
No connections, by either party, will be allowed between Manhole 34-0A and Manhole
80-15 except by mutual agreement.
Both parties agree that either may exceed this amount at the non-peak times,
as long as there are no negative impacts, and the combined capacity of the
system is not exceeded, and prior notification is given to the other party. It
shall be the responsibility of each part to monitor its flow as and when
necessary to determine what the flow rate characteristics of the system are.
If the combined capacity of the system is exceeded, the party exceeding its
allowable rate shall have the option of making revisions within its own system
to bring its flows into compliance with this Section, or of paying for improve-
ments to either system which will increase the available capacity of the
systems. If both parties exceed their allowable rate, the cost of any new
facilities will be divided based upon the ratio of the percentage by which each
party is exceeding its allowable rate. If the allowable rate is exceeded at only
one location, the ratio at that location will be used. If the rate is exceeded at -
more than one location, the ratio will be based upon the furthest east point at
which the allowable rates are being exceeded. If a regular surcharge condition
exists that is not due to a blockage problem, a previously agreed upon
temporary situation such as re-routing for construction, or by either party -'
exceeding its capacity, the DISTRICT shall have the option of making revision
within its own system to bring its flows into compliance with this section,-or
of paying for improvements to either system which will resolve the surcharge
condition. Both parties acknowledge and agree that the City of Kent is not a
party to this agreement, and the amount referenced for the City of Kent is for
reference only and could be the basis for a separate agreement in the future
involving THE DISTRICT and the City of Kent, and involving RENTON if their
rate allowance is at all to be affected.
13. Connection of THE DISTRICT to RENTON Facilities, or RENTON to THE
DISTRICT Facilities. Connection of facilities of either RENTON or THE
DISTRICT to facilities of the other, or to facilities tributary to facilities of the
other, shall be coordinated by both parties to assure:
a) Payment of appropriate charges,
b) up-to-date accounting of connections,
c) potential sources of debris, or construction damage, are identified, and
4-7:0WOO400E.00I Page 9 of 11
d) inspection of connection construction can be scheduled.
RENTON and THE DISTRICT shall each be responsible for maintenance of their
own facilities, except as described in Section 11 above. Should damage of the
facilities of one be traceable to a source within the jurisdiction of the other,
RENTON and THE DISTRICT agree to assist each other in whatever action is
necessary to identify, prosecute, fine, collect from,, or otherwise deal with the
responsible party.
14. Future Annexations to RENTON. The service areas listed in sections 1-7 of this
AGREEMENT are the only areas of cross-service agreed to at this time. •
RENTON shall serve all other areas within RENTON without challenge by THE
DISTRICT, based upon the City limits at the date of the agreement. THE
DISTRICT shall serve all areas within THE DISTRICT's limits at the time of this
agreement, except as previously detailed. Future annexation to RENTON shall
not limit THE DISTRICT providing water or sewer service to those areas within
THE DISTRICT limits to the standards of THE DISTRICT, even if there is
conflict with RENTON standards, unless this is altered by future agreements.
Future agreements may occur between RENTON and THE DISTRICT transfer-
ring additional, or future, services areas and/or facilities by mutual agreement.
15. DISTRICT Comprehensive Water and Sewer Planning. THE DISTRICT will
submit the current and all future Comprehensive Water.and/or Sewerage Plans
and amendments thereto involving area and/or improvements within RENTON
City Limits. The Comprehensive Water and/or Sewerage Plans and amend-
ments shall be in compliance with RENTON requirements for service within
RENTON, except where existing facilities may differ from RENTON require-
ments. No replacement or augmenting of the system shall be required at this
time. As new facilities are planned and constructed within RENTON, they shall
comply with RENTON technical standards then in effect.
16. Extensions of Utilities Across Properties. RENTON and THE DISTRICT agree
that they will require property owners who must extend facilities to serve their
property to extend said facilities to the far side of the property to provide a
connection point for the future (or existing) facilities of the next property.
17. Recording of Agreement with King County. THE DISTRICT is hereby authorized
to record a copy of a resolution in which a copy of this Agreement is
incorporated with the office of the Auditor of King County, Washington, for the
purposes of giving notice to all present and future owners of the real property
described in Exhibit "E" that their properties are subject to the connection
charges specified herein.
4-7:0400400g•001 Page 10 of 11
18. Submittal of Agreement to the Boundary Review Board. THE DISTRICT is
hereby authorized to prepare a submittal to the Washington State Boundary
Review Board for King County. THE DISTRICT and RENTON agree to be
coproponents of the submittal, and to provide any support requested or
required by King County or the Boundary Review Board in the review and
approval process. RENTON agrees to pay THE DISTRICT for one-half of all
costs involved in the submittal, review and approval process, to a maximum of
$3,000 (50 percent of $6,000 estimated total expenses).
19. Sanctity of Agreement. This agreement constitutes the entire agreement of the
parties, and there are no representations or oral agreements other than those
listed herein, which vary the terms of this agreement. Future agreements may
occur between the parties to transfer additional, or future, service areas and/or
facilities by mutual agreement.
20. Obligations Intact. Nothing herein shall be construed to alter the rights,
responsibilities, liabilities, or obligations of either THE DISTRICT or RENTON
regarding provisions of water or sewer services to the properties described
herein, or other properties, except as specifically set forth herein.
DATED this�,,C,� day of 192Z.
Approved by Ordinance No. of the City Council of the City of RENTON,
Washington, at its regular meeting held on day of 19 .
CITY 0(->--ENTQ
•
By: Kr JrA
Title: Mayc r
ATTEST:
Ci er erk
0666-S
Approved by Resolution No. / of the Board of Commissioners of SOOS CREEK
WATER AND SEWER DISTRICT of King County, Washington, adopted at its regular
meeting held on 18th day of April 19 91
SOO' CR EK ATER AND SEW ' TRICT
ligt?
Patrick J. Bra
President
Title: Roard of Commissioners
4-7:0400400g.001 Page 11 of 11
f,
APPENDIX
City of Renton
Resolution No. 2764
APPENDIX C
CITY OF RENTON
RESOLUTION NO. 2764
Sanitary Sewer Moratorium
Within the South Highlands,
Maplewood, and Heather Downs
Drainage Basin
CITY OF RENTON, WASHINGTON
RESOLUTION NO.. 2764
A RESOLUTION OF THE CITY OF RENTON, WASHINGTON, DECLARING
A MORATORIUM FOR CONNECTIONS TO SANITARY SEWERS WITHIN THE
SOUTH HIGHLANDS, MAPLEWOOD, AND HEATHER DOWNS DRAINAGE
BASINS.
WHEREAS, the areas within the South Highlands,. Maplewood, and
Heather Downs drainage basins are undergoing rapid growth; and
WHEREAS, the South Highlands, Maplewood, and Heather Downs
--areas have been determined to be areas of concern ' of the City for
sanitary sewer capacity; and
WHEREAS, the City has previously defined the boundaries of the
South Highlands, Maplewood, and Heather Downs drainage basins as per
attachment "A" which is incorporated herein as if fully set forth;
and
WHEREAS, the presently existing sanitary sewers within those
basins are operating at or near capacity; and
WHEREAS, existing sewer lines have insufficient diameter and
are of insufficient slope to serve the areas of the respective
basins; and
WHEREAS, certain sewer lines within the collection systems of
each of those basins are flowing in excess of their designed
capacity; and
WHEREAS, the capacity of those sanitary sewers are periodically
exceeded in times of high rain or intensive use resulting in the
backup of untreated sewage; and
WHEREAS, such backups of untreated sewage are detrimental to
the public health and safety.
1
it
RESOLUTION NO. 2764
NOW, THEREFORE, BE IT RESOLVED BY THE CITY OF RENTON,
WASHINGTON, AS FOLLOWS: ! '
SECTION I. The above recitals are found to be true and
correct.
SECTION II. There is hereby declared a moratorium on the
connection of new construction to any of the existing sewer systems
in the South Highlands, Maplewood, and Heather Downs basins . This
moratorium will be ineffect until January 31, 1992,. the time when
it is estimated that the capacity of the system will be improved so
that additional connections can be allowed. . This moratorium may be
extended by the City Council upon a finding that the sewer health
problems have not been adequately resolved.
SECTION III . The following properties, although covered by the
moratorium, may have available a limited exemption:
1 . Eastway Center.
2 . Oakwood Homes .
3 . Old National Bank, N.E. 4th Street branch.
4 . Bakke, Inc.
5 . Forest Crest.
6. Carner Construction (Union Avenue at S.E. 132nd) .
7 . Union Plaza.
8. Renton East.
9. Crown Point II.
The above properties may be permitted to hook-up to the
South Highlands, Maplewood, and Heather Downs sewers only until 125
equivalent dwelling units (EDU's) have hooked up ' to the sewers, or
until the City Council has determined, following the Public Works
2
RESOLUTION NO. 2764
Director's recommendation, that the 'sewers have reached or exceed
capacity. Upon the occurrence of either such Council finding or
permits being issued to construct the 125 EDU's, no further
connections shall be permitted. In the event interim improvements
increase the available capacity, additional EDU'.s will be made
available.
Available capacity, expressed in number of EDU's, will be,
assigned to applicants for building permits based on date of
application, on a "first-come first-served basis . "
The owner of a single-family dwelling unit suffering an
emergency (i. e. , failed septic tank) orany single connection ( 1
equivalent dwellingunit) adjacent to an existing collection system
pipeline may petition the City Council for a waiver of the terms of
the moratorium and for authority to connect to the sewer system.
Said connection shall not exceed one ( 1) EDU.
PASSED BY THE CITY COUNCIL this 17 day of July , 1989 .
Maxine E. Motor, City Clerk
APPROVED BY THE MAYOR this 17 day of July ; 1989 .
Z.KM1
Earl Clymer, Mayo f �
Approv as to form: '
Lawrence J. Wa en, City Attorney
Res .58 : 7-7-89 :as . '
3
„„,
APPENDIX D
City of Renton Municipal Code
Title VIII - Chapter 7 Sewers
APPENDIX D
City of Renton
Municipal Code
Title VIII - Chapter 7
SEWERS
PIPELINE MATERIALS FOR THE
AQUIFER PROTECTION ORDINANCE
PIPELINE REPAIR MATERIALS FOR
AQUIFER PROTECTION
8-5-1 8-5-1
CHAPTER 5
SEWERS
SECTION: CITY COMPREHENSIVE SEWERAGE.PLAN: The
complete engineering report and plans that guide
8-5- 1: Definitions planning and construction of all new sanitary
8-5- 2: Use of Public Sewers Required sewer facilities. (Ord. 3055, 8-9-76)
8-5- 3: Private Sewage Disposal
8-5- 4: Building Sewer Permits COMBINED SEWER: A sewer receiving both sur-
8-5- 5: Independent Sewers; Cost of face runoff and sewage. (Ord. 2173, 8-16-65)
8-5- 6: Specifications for Building Sewers
8-5- 7: Connection of Building Sewer to Public FWPCA: The Federal Water Pollution Control Act
Sewer of 1956, PL 84-660, together with the amendments
8-5- 8: Inspection of 1966, 1972, and as same may be hereafter
8-5- 9: Precautions While Building amended; Public Law 92-500 and all subsequent
8-5-10: Use of Public Sewers amendments thereto. (Ord. 3055, 8-9-76)
8-5-11: Grease, Oil and Sand Interceptors
8-5-12: Preliminary Treatment of Waste Matter GARBAGE: Solid wastes from the preparation,
8-5-13: Manholes cooking, and dispensing of food, and from the
8-5-14: Examination of Water and Sewage handling, storage, and sale of produce.
8-5-15: Sewer Charges
8-5-16: Billings and Collections INDUSTRIAL WASTES: The liquid wastes from in-
8-5-17: Charges for Property Not Previously dustrial process as distinct from sanitary sewage.
Assessed (Ord. 2173, 8-16-65) -
8-5-18: Public Sewer Extension -
8-5-19: Public Sewer Specifications INFILTRATION: The volume of water or ground
8-5-20: Penalties for Violations of Regulations water entering sewers and building sewer con-
nections from the soil through defective joints,
broken or cracked pipe, improper connections or
other structural failures.
8-5-1: DEFINITIONS: Unless the context INFILTRATION AND INFLOW: The combined vol-
specifically indicates otherwise, the ume of both infiltration and inflow water found in
meaning of terms used in this Chapter shall be as existing sewer systems.
follows:
INFLOW: The volume of water discharged into
BOD (denoting Biochemical Oxygen Demand): The sewer lines from surface sources such as roof
quantity of .oxygen utilized in the biochemical drains, cellar and yard area drains, foundation
oxidation of organic matter under standard labor- drains, swamp and spring water drains, and all
atory procedure in five (5) days at twenty degrees other accidental or deliberate discharges of surface
(20°) C., expressed in parts per million by weight. water. (Ord. 3055, 8-9-76)
BUILDING DRAIN: That part of the lowest hori- NATURAL OUTLET: Any outlet into a
zontal piping of a drainage system which receives watercourse, pond, ditch, lake or other body of
the discharge from soil, waste, and other drainage surface or ground water.
pipes inside the walls of the building and conveys
it to the building sewer, beginning five feet (5') pH: The logarithm of the reciprocal of the weight
outside the inner face of the building walls. of hydrogen ions in grams per liter of solution.
BUILDING SEWER: The extension from the build- PROPERLY SHREDDED GARBAGE: The wastes
ing drain to the public sewer or other place of • from the preparation, cooking, and dispensing of
disposal. (Ord. 2173, 8-16-65) food that has been shredded to such degree that all
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8-5-1 8-6-3
particles will be carried freely under the flow the jurisdiction of said City, anyhuman or
conditions normally prevailing in public sewers, animal excrement, garbage, or other objec-
with no particle greater than one-half inch (1/2") in tionable waste.
any dimension. (Ord. 2173, 8-16-65)
B. It shall be unlawful to discharge to any
PUBLIC SEWER: That portion of a sanitary sewer natural outlet within the City, or in any area
and its appurtenances located on property, ease- under the jurisdiction of said City, any
ments and rights of way held, owned, controlled sanitary sewage, industrial wastes, or other
and accepted by the City or other public authority. polluted waters, except where suitable treat-
(Ord. 3055, 8-9-76) ment has been provided in accordance with
subsequent provisions of this Chapter.
SANITARY SEWER: A sewer which carries sewage
and to which storm, surface, and ground waters are C. Except as hereinafter provided, it shall be
not intentionally admitted. unlawful to construct or maintain any privy,
privy vault, septic tank, cesspool, or other
SEWAGE: A combination of the water-carried facility intended or used for the disposal of
wastes from residences, business buildings, insti- sewage. (Ord. 2173, 8-16-65)
tutions, and industrial establishments, together
with such ground, surface, and storm waters as D. The owner of each house, building or property
may be present. used for human occupancy, employment, recre-
ation or other purpose, situated within the
SEWAGE TREATMENT PLANT: Any arrangement City and abutting on any street, alley or right
of devices and structures used for treating sewage. of way in which there is now located or may
in the future be located a public sanitary or
SEWAGE WORKS: All facilities for collecting, combined sewer of the City in which said
pumping, treating, and disposing of sewage. public sewer is within two hundred feet (200') _
of the property line and which has been
SEWER: A pipe or conduit for carrying sewage. determined to be a health hazard by the City
(Ord. 2173, 8-16-65) or the Seattle-King County Health Depart-
ment, or its successor agencies, or which has
SIDE SEWER: That portion of the public sewer participated and been included in a local
between primary collection lines and individual improvement district, is hereby required at his
property lines. (Ord. 3055, 8-9-76) expense, to install suitable toilet facilities
therein and to connect such facilities directly
STORM SEWER and 'STORM DRAIN: A sewer with the proper public sewer in accordance
which carries storm and surface waters and with the provisions of this Chapter, within
drainage, but excludes sewage and polluted ninety (90) days after date of official notice. to
industrial wastes. do so. Nothing herein shall require any such
owner to connect with said sanitary or com-
SUSPENDED SOLIDS: Solids that either float on bined sewer when such sewer is installed by a
the surface of; or are in. suspension in water, developer for the purpose of meeting platting
sewage, or other liquids; and which are removable requirements and said owner is not within the
by laboratory filtering. confines of said plat. (Ord. 3440, 6-23-80)
WATERCOURSE: A channel in which a flow of ,
water occurs either continuously or intermittently. 8-5-3: PRIVATE SEWAGE DISPOSAL
(Ord. 2173, 8-16-65)
A. 'Where a public sanitary or combined sewer is
not available under the provisions of this
8-5-2: USE OF PUBLIC SEWERS RE- Chapter, the building sewer shall be
QUIRED: connected to a private sewage disposal system
complying with the provisions of this Chapter.
A. It shall be unlawful for any person to place,
deposit or permit to be deposited in any un- B. Before commencement of construction of a
sanitary manner upon public or private prop- private sewage disposal system the owner
erty within the City, or in any area under -
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8-5-3 8-54
B) shall first obtain a written permit signed by disposal facilities shall be abandoned and
the Utilities Engineer. The application for filled with suitable material; provided,
such permit shall be made on a form firm- however, the owner of the subject premises
ished by the City, which the applicant shall may suitably clean the septic tank to utilize
supplement by any plans, specifications and same and any adjoining drain fields system
other information deemed necessary by the for the proper disposal of storm waters. (Ord.
Utilities Engineer. A permit and inspection 4169, 8-15-88)
fee of ten dollars ($10.00) shall be paid to the
Director of Finance at the time the F. The owner shall operate and maintain the pri-
application is filed. (Ord. 2801, 9-24-73; amd. vats sewage disposal facilities. in a sanitary
Ord. 2845, 4-15-74) manner at all times, at no expense to the
City.
C. A permit for a private sewage disposal system
shall not become effective until the installa- G. No statement contained in this Chapter shall
tion is completed to the satisfaction of the be construed to interfere with any additional
Utilities Engineer. He shall be allowed to requirements that may be imposed by .the
inspect the work at any stage of construction Health Officer. (Ord. 2801, 9-24-73)
and, in any event, the applicant for the
permit shall notify the Utilities Engineer
when the work is ready for final inspection, 8-5-4: BUILDING SEWER PERMITS:
and before any underground portions are
covered. The inspection shall be made within A. No unauthorized person shall uncover, make
forty eight (48) hours of the receipt of notice any connections with or openings into, use,
by the Utilities Engineer whenever possible. alter or disturb any public sewer or. appur-
(Ord. 2801, 9-24-73 amd. Ord. 2847, 5-6-74) tenance thereof without first obtaining a
written permit from the Utilities Engineer or
D. The type, capacities, location and layout of a his duly authorized representative. Permission
private sewage disposal system shall comply to make connection to the public sewer shall
with all recommendations of the Seattle-King consist of either.
County Health Department. Field tests and a
site survey shall be made before any permit is 1. A developer extension agreement, wherein
issued for any private sewage disposal system permission is granted to make an extension to
employing subsurface soil absorption facilities. a public sewer, or
No septic tank or cesspool shall be permitted
to discharge to any public sewer or natural 2. A building sewer permit, wherein permis-
outlet. (Ord. 2801, 9-24-73) sion is granted to make a connection from
E. Pursuant to BCW 35.67.190 all private property to a public sewer.
property
owners within the area served by a sewerage B. A building sewer permit shall include permis-
system shall be compelled to connect their sion to construct a side sewer whenever it is
private drains and sewers with the sewerage required to complete connection.
system, or suffer a penalty. Connection to the
public sewer system shall not be compulsory C. There shall be three (3) classes of building
except under those situations detailed in sewer permits:
Washington Administrative Code chapter
248-96, subsection 060, as may be amended 1. For residential service;
from time to time, or City Code Section
8-5-2D. Any property owner not compelled to 2. For commercial service; and
connect to the sewerage system and choosing
not to connect 'to the City sewerage system 3. For industrial service. (Ord. 3832, 8-13-84)
shall be penalized an amount equal to the
charge that would be made for sewer service D. In each case the owner or his duly authorized
if the property was connected to the sewerage agent or representative shall make application
system. All such penalties shall be considered in writing on a special form furnished by the
revenue of the sewerage system. After City for said purposes. The permit application
connection to the sewerage system, all septic shall be supplemented by any plans, speci-
tanks, cesspools and similar private sewage fications or other information considered
990
8-5-4
8-5-6
D) pertinent in the judgment of the Utilities 8-5-6: SPECIFICATIONS FOR BUILDING
Engineer or his duly authorized represen- SEWERS: The building sewer shall be
tative. The permit and inspection fees shall be cast iron soil pipe, ASTM specification A74-42 or
as follows: equal, vitrified clay sewer pipe, ASTM spec.
C13-44T, PVC plastic pipe ASTM spec. D3034 or
1. The sum of sixty dollars ($60.00) for a equal, or other suitable material approved by the
residential building sewer permit. Utilities Engineer. Joints shall be tight and
waterproof. Any part of the building sewer that is
2. The sum of eighty dollars ($80.00) for a located within ten feet (10') of a water service pipe
business or commercial building sewer permit. shall be constructed of cast iron soil pipe with
push-on rubber gasket joints. Cast iron pipe with
3. The sum of one hundred dollars ($100.00) push-on rubber gasket joints may be required by
for an industrial building sewer permit. the Utilities Engineer where the building sewer is
exposed to damage by tree roots. If installed in -�
4. The sum of twenty dollars ($20.00) for a filled or unstable ground, the building sewer shall
permit for the necessary repair of any of the be of cast iron or ductile iron pipe with push-on
above sewer connections. rubber gasketed joints.
And all such fees shall be paid to the Director The size and slope of the building sewer shall be _
of Finance or his duly designated repro- subject to the approval of the Utilities Engineer,
sentative at the time the application for such but in no event shall the diameter be less than six
permit is filed. (Ord. 4287, 8-13-90) inches (6"). The slope of such six inch (6") pipe
shall be not less than one-eighths inch (1/8") per
E. In addition to other permits and fees, there foot.
will be an inspection/approval fee for on-site
replacement and improvements which shall be Whenever possible the building sewer shall be
identical to that specified in Chapter 8, Title brought to the building at an elevation below the
IX of Ordinance No. 4260 and any subsequent basement floor. No building sewer shall be laid
amendments thereto. (Ord. 3832, 8-13-84) parallel to or within three feet (3') of any bearing
wall, which might thereby be weakened. The depth
shall be sufficient to afford protection from frost.
8-5-5: INDEPENDENT SEWERS; COST OF: The building sewer shall be laid at uniform grade
A separate and independent building and in straight alignment insofar as possible.
sewer shall be provided for every building, except Changes in direction shall be made with properly
where one building stands at the rear of another curved pipe and fittings.
on an interior lot and no private sewer is available
or can be constructed to the rear building through In all buildings in which any building drain is too
an adjoining alley, court, yard, or driveway, the low to permit gravity flow to the public sewer, , -
building sewer from the front building may be sanitary sewage carried by such drain shall be
extended to the rear building and the whole lifted by approved artificial means and discharged
considered as one building sewer. (Ord. 1452, to the building sewer.
6-12-66)
All excavations required for the installation of a
Old building sewers may be used in connection building sewer shall be open trench work unless
with new buildings only when they are found, on otherwise approved by the Utilities Engineer. Pipe
examination and tests by the Utilities Engineer, to laying and backfill shall be performed in accordance
meet all requirements of this Chapter. (Ord. 1552, with ASTM spec. C12-19 and APWA spec. Sect. 60
6-12-56; amd. Ord. 2847, 6-6-74) except that no backfill shall be placed until the
work has been inspected.
All costs and expense incident to the installation
and connection of the building sewer shall be borne All joints and connections shall be made gastight
by the owner or applicant of the premises in ques- and watertight, and installed in accordance with
tion. The owner shall indemnify the City against APWA spec. 62-3.98A.
any loss or damage that may directly or indirectly
be occasioned by the installation of the building
sewer. (Ord. 1552, 6-12-56)
990
8-5-6 8-5-10
Clay pipe joints shall be in conformance with A surety bond in an amount deemed sufficient and
ASTM C-425. Concrete pipe joints shall conform determined by the Utilities Engineer, but in no
with ASTM C-443. Ductile and cast iron pipe event less than five hundred dollars ($500.00), shall
push-on joints shall conform with ANSI A-21.11. be furnished and deposited with the City to
PVC pipe joints shall conform with ASTM D 2680. indemnify the City against any loss, damage,
liability in connection with such sewer work.
Other jointing materials and methods may be used
only by written approval of the Utilities Engineer.
8-5-10: USE OF PUBLIC SEWERS: No person
shall discharge or cause to be discharged
8-5-7: CONNECTION OF BUILDING SEW- any storm water, surface water, ground water, roof
ER TO PUBLIC SEWER: The con- run-off, subsurface drainage, cooling water or un-
nection of the building sewer into the public sewer polluted industrial process waters to any sanitary
shall be made at the "Y" branch, if such branch is sewer. Storm water and all other unpolluted drain-
available at a suitable location. If the public sewer age shall be discharged to such sewers as are ape-
is twelve inches (12") in diameter or less, and no cifically designated as combined sewers or storm
properly located "Y" branch is available, the owner sewers, or to a natural outlet approved by the
shall at his expense install a "Y" branch in the Utilities Engineer. Industrial cooling water or
public sewer at the location specified by the unpolluted process waters may be discharged, upon
Utilities Engineer. The new "Y" branch shall be approval of the Utilities Engineer, to a storm sewer
installed with.a cast iron double strap sewer saddle combined sewer or natural outlet.
tee with the existing pipe drilled and rasped open.
Where the public sewer is greater than twelve Except as hereinafter provided, no person shall
inches (12") in diameter, and no properly located discharge or cause to be discharged any of the
"Y" branch is available, a neat hole may be drilled following described waters or wastes to any public
into the public sewer to receive the building sewer, sewer:
with entry in the downstream direction at an angle
of about forty five degrees (45°). A forty five degree A. Any liquid or vapor having a temperature
(45°) ell may be used to make such connection, higher than one hundred fifty degrees (150°)
with the spigot end cut so as not to extend past F.
the inner surface of the public sewer. The invert of
the building sewer at the point of connection shall B. Any water or waste which may contain more
be at the same or at a higher elevation than the than one hundred (100) parts per million, by
invert of the public sewer. A smooth, neat joint weight, of fat, oil or grease.
shall be made and the connection made secure and
watertight by encasement in concrete. Special C. Any gasoline, benzene, naphtha, fuel oil, or
fittings may be used for the connection when other flammable or explosive liquid, solid or
approved by the Utilities Engineer. (Ord. 3055, gas.
8-9-76)
D. Any garbage that has not been properly
shredded.
8-5-8: INSPECTION: The applicant for the
building sewer permit shall notify the E. Any ashes, cinders, sand, mud, straw, shay-
Utilities Engineer when the building sewer is ready ings, metal, glass, rags, feathers, tar, plastics,
for inspection and connection to the public sewer. wood, paunch manure, or any other solid or
The connection shall be made under the supervision viscous substance capable of causing obstruc-
of the Utilities Engineer or his representative. tion to the flow in sewers or other
interference with the proper operation of the
sewage works.
8-5-9: PRECAUTIONS WHILE BUILDING:
All excavations for building sewer instal- F. Any waters or wastes having a pH lower than
lation shall be guarded with barricades and lights five and five-tenths (5.5) or higher than nine
and such other precautions as are reasonably ade- (9.0) or having any other corrosive property
quate to protect the public from accident and in- capable of causing damage or hazard to struc-
jury. Streets, sidewalks, parkways and other public tures, equipment, and personnel of the sewage
property disturbed in the course of the work shall works.
be restored in a manner satisfactory to the City.
990
8-5-10 8-5-14
G. Any waters or wastes containing a toxic or suspended solids, or (c) containing any quantity of
poisonous substance in sufficient quantity to substances having the characteristics described in
injure or interfere with any sewage treatment certain sections of this Chapter, or (d) having an
process, constitute a hazard to humans or average daily flow greater than two percent (2%) of
animals, or create any hazard in the receiving the average daily sewage flow of the City, shall be
waters of the sewage treatment plant. subject to the review and approval of the Utilities
Engineer. Where necessary in the opinion of the
H. Any waters or wastes containing suspended Utilities Engineer, the owner shall provide, at his
solids of such character and quantity that ' expense, such preliminary treatment as may be
unusual attention or expense is required to necessary to, (a) reduce the biochemical oxygen
handle such materials at the sewage treat- demand to three hundred (300) parts per million
ment plant. and the suspended solids to three hundred fifty I
(350) parts per million by weight, or (b) reduce
I. Any noxious or malodorous gas or substance objectionable characteristics or constituents to
capable of creating a public nuisance. within the maximum limits provided for in certain
sections of this Chapter, or (c) control the quan-
tities and rates of discharge of such waters or
8-5-11: GREASE, OIL AND SAND ANTER. wastes. Plans, specifications, and any other per-
CEPTORS: Grease, oil and sand tinent information relating to proposed preliminary
interceptors shall be provided when, in the opinion treatment facilities shall be submitted for the
of the Utilities Engineer, they are necessary for the approval of the Utilities Engineer and the Depart-
proper handling of liquid wastes containing grease ment of Ecology of the State of Washington and no
in excessive amounts, or any flammable wastes, construction of such facilities shall be commenced
sand, and other harmful ingredients; except that until said approvals are obtained in writing. (Ord.
such interceptors shall not be required for private 1552, 6-12-56; amd. Ord. 1847, 5-6-74; Ord. 3055,
living quarters or dwelling units. All interceptors 8-9-76)
shall be of a type and capacity approved by the
Utilities Engineer, and shall be so located as to be Where preliminary treatment facilities are provided
readily and easily accessible for cleaning and for any waters or wastes, they shall be maintained
inspection. continuously in satisfactory and effective operation,
by the owner at his expense.
Grease and oil interceptors shall be constructed of
impervious materials capable of withstanding No statement contained in this Chapter shall be
abrupt and extreme changes in temperature. They construed as preventing any special agreement or
shall be of substantial construction, watertight, and arrangement between the City and any industrial
equipped with easily removable covers which when concern whereby an industrial waste of unusual
bolted in place shall be gastight and watertight. strength or character may be accepted by the City
Where installed, all grease, oil and sand inter- for treatment, subject to payment therefor by the
ceptors shall be maintained by the owner, at his industrial concern.
expense, in continuously efficient operation at all
times. (Ord. 1552, 6-12-56; amd. Ord. 1847, 5-6-74)
8-5-13: MANHOLES: When required by the
A. Grease and oil interceptors shall be required Utilities Engineer, the owner of any
on all restaurants, garages and gas station property served by a building sewer carrying indus-
premises and shall be so situated as to inter- trial wastes shall install a suitable control manhole
cept only the sources of grease and oil wastes in the building sewer to facilitate observation,
but excluding domestic or human wastes. sampling and measurement of the wastes. Such
(Ord. 3055, 8-9-76) manhole, when required, shall be accessibly and
safely located, and shall be constructed in accor-
dance with plans approved by the Utilities
8-5-12: PRELIMINARY TREATMENT OF Engineer. The manhole shall be installed by the
WASTE MATTER: The admission into owner at his expense, and shall be maintained by j
the public sewers of any waters or wastes having him so as to be safe and accessible at all times.
(a) a five (5) day biochemical oxygen demand
greater than three hundred (300) parts per million
by weight, or (b) containing more than three 8-5-14: EXAMINATION OF WATER AND
hundred fifty (350) parts per million by weight of SEWAGE: All measurements, tests and
292
8-5-14 8-5-15
analyses of the characteristics of water and wastes any other use, and the person in control pro-
to which reference is made in this Chapter, shall vides proof of this fact, such person may
be determined in accordance, with standard apply for the installation of a separate sewer
methods for the examination of water and sewage, exempt meter to measure the amount of
and shall be determined at the control manhole, or water so used or lost and no charge shall be
upon suitable samples taken at said control made for sewage because of water so used or
manhole. In the event that no special manhole has lost. A sewer exempt meter application will be
been required, the control manhole shall be made in the same manner as a regular water
considered to be the nearest downstream manhole meter installation. All sewer exempt meters
in the public sewer to the' point at which the shall be located at the property line or
building sewer is connected. adjacent to the regular meter; provided,
however, an evaporation exemption may be
The Utilities Engineer and other duly authorized granted to coin-operated and commercial
employees of the City bearing proper credentials laundries without the installation of a
and identification shall be permitted to enter upon submeter. Such exemption shall be an eleven
all properties for the purposes of inspection, percent (11%) reduction in chargeable water
observation, measurement, sampling and testing, in consumption for commercial and industrial
accordance with the provisions of this Chapter. laundries and a three percent (3%) reduction
(Ord. 1552, 6-12-56; amd. Ord. 1847, 5-6-74) in chargeable water consumption for
coin-operated laundries.
8-5-15: SEWER CHARGES: C. Upon application made to the City Council by
any municipal or quasi-municipal corporation
A. The monthly rates and charges for sewage including school, hospital or fire district,
disposal service shall be as follows: County of King, or similar public entity, for
sewer services outside the City limits and
1. Single-Family Dwelling Units: Nine dollars upon approval of hook-up or connection there-
twenty seven cents ($9.27). for 'by the City Council, the rates to such
special users shall be one and one-half (11/2)
2. All Other Users: A base charge of one times the, basic rates applicable to resident
dollar forty four cents ($1.44) plus seven users for similar services, plus all other
dollars eighty three cents ($7.83) per month charges (including hook-up, connection and
for each seven hundred fifty (750) cubic feet fees levied or assessed by "Metro") applicable
of water used. to such services. (Ord. 3055, 8-9-76)
3. Charges for Sewer Service Without City D. In addition to the foregoing charges specified
Water: In the event that water obtained from in this Section, the following rates shall be
sources other than purchased from the City is charged:
either discharged or drained into the sewer
system, users shall be charged by one of the ' 1. A charge of thirteen dollars eighty cents
two (2) following methods: ($13.80) per month, payable to Metro for each
single-family dwelling unit.
a. For single-family residence nine
dollars twenty seven cents ($9.27) per month. 2. A charge of eleven dollars fifty cents
($11.50) per month, payable to Metro for each
b. For other than single-family seven hundred fifty (750) cubic feet, or any
dwellings, the Director of Public Works shall fraction thereof, of water used for all users
install a water meter into such private waste other than single-family.
system at cost to property owners, and the
method of billing shall be in compliance with 3. Any additional charges hereafter imposed
Section 8-5-15A2. (Ord 4336, 12-16-91) by Metro under the "Industrial Cost Recovery"
or "Industrial Waste Surcharge" programs
B. Whenever the use of water is such that a required under the FWPCA (PL 92-500),
portion of.the water used does not flow into section 204, or as same may be amended
the City sewer system but is lost by evapora- hereafter, plus fifteen percent (15%) thereof
tion or used in irrigation, manufacturing or as an additional charge for the City's cost of
implementing such programs.
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8-5-15 8-5-17
D) 4. Senior and/or disabled citizens who qualify directed to cut off the water service to the
under Section 8-4-31B for special rates are premises and to enforce the lien upon the
eligible for the following rates: property to which such service has been
rendered, and such lien shall be superior to 1--i
Twenty five cents ($0.25) per month for City all other liens or encumbrances except those
sewer, and thirteen dollars eighty cents for general taxes and special assessments.
($13.80) per month for Metro sewer. (Ord. Such liens may be foreclosed by the City in
4336, 12-16-91, eff. 1-1-92) the manner provided by law for the enforce-
ment of the same, and for delinquent sewer
E. Whenever the use of the public sewer is such charges, in addition to all other remedies
that infiltration and/or inflow is evident from permitted. There will be an additional sum of
a private sewage facility, or a building sewer, twenty dollars ($20.00) charged for the
where the sewer flow is two (2) times in ex- expense of turning the water off and on. Any
cess of the daily metered water, the Utilities such water service cut off shall remain
Engineer shall install a sewage meter and disconnected until all charges to the City plus
charge the regular monthly rates and charges penalties, together with the additional sum of ;
for customers in that class, for all infiltration twenty dollars ($20.00) for turning the water
and inflow and sewagethat it discharged into on, shall have been paid.
the public sewers. All costs and expenses in-
cident to the installation and connection of C. In lieu of any notice by mail, the Utilities
the sewer meter shall be borne by the owner Engineer or the Director of Finance, or their
or applicant of the premises in question. (Ord. duly authorized representatives, may cause a
3055, 8-9-76) delinquent sewer charge notice to be served
personally upon such user or occupant.
F. Rate Revenue for Capital Purpose: A portion Failure to receive mail properly addressed to
of the revenue generated from the above rates such user or occupant shall not be a valid
will be used for sewer utility related capital defense for failure to pay any such delinquent
improvement projects and/or debt services for charges. Any change in ownership of property
the same as indicated in the adopted budget. or change in mailing address must be
Also included in the above rates are properly filed, in writing, with the office of
applicable State and local taxes. the Director of Finance within fifteen (15)
days after such change of status. (Ord. 4293,
G. Penalty and Late Charges: Penalty and late 10-15-90)
charges shall be the same as in Section
8-1-8A1b. (Ord. 4253, 12-11-89)
8-5-17: CHARGES FOR PROPERTY NOT
PREVIOUSLY ASSESSED:
8-5-16: BILLINGS AND COLLECTIONS:
A. The special connection charge imposed shall
A. All bills for sewer disposal service as set forth be paid into the Waterworks Utility Construe-
in this Chapter or as same may be amended tion Fund.
from time to time, shall become due and
payable at the office of the Director of The charge shall be paid in cash whenever.
Finance, or such other place as the City may such connection is requested, or application
designate, not later than fifteen (15) days may be made by such property owner to pro-
from date of billing. If not so paid, any such vide for the payment thereof by an
account shall thereupon become delinquent. . installment contract if the amount is in
excess of five hundred dollars ($500.00), with
B. If no timely payment is made as herein set interest at the rate of ten percent (10%) per
forth and the account thus becomes delin- annum, computed annually on unpaid
quent, the Director of Finance, or his/her duly balances, which contract shall provide for a
authorized representative shall mail to the minimum ,down payment of not less than ten
user a notice, in writing, postage prepaid to percent (10%) of such total connection charges
the last known address of such user stating hereinabove set forth, payable upon execution
that if such delinquent sewer charges are not of such contract and the balance thereof to
paid forthwith, the Utilities Engineer shall be
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8-5-17 8-5-17
A) be paid in not more than twenty (20) quer- a private developer under a latecomer agree-
terly installments payable on each January 1, ment.
April 1, July 1, and October 1. Such install-
ment contracts shall provide that any unpaid a. The number of units of property
balance may be paid in full in any year at frontage to be served by the sewer distribu-
the time the first quarterly payment of such tion system, determined in the manner pre-
year is due and payable, shall describe the scribed in RCW 35.44.030.040 and .047 for
property served by the water, and shall be determining "assessable units of frontage",
duly acknowledged by the property owner and shall be multiplied by the actual local
be recorded by the Public Works Director in improvement assessment per unit of frontage
the office of the County Auditor at the for such facility for the year in which the
expense of such property owner. Delinquent sewer main to which the property is to be
payments under such installment contracts connected was constructed and accepted as
shall be a lien upon the described property as complete by the City. (Ord. 4205, 2-20-89)
provided for in RCW 35.67.200, and enforce-
able in accordance with RCW 35.67.220 b. In addition to the aforestated cost of
through 35.67.280. As an additional and con- "assessment" there shall be a charge of ten
current method of enforcing such lien, the percent (10%) per annum added to such cost,
water service to such property may be dis- but in no case shall such added interest
connected in accordance with RCW 35.67.290 charge be in excess of one hundred percent
and this Code until such time as all delin- (100%) of the original assessment cost. Inter-
quent payments have been paid in full. Upon est charges should be simple interest and not
full payment of such installment contract, the compound interest(Ord. 4287, 8-13-90)
Public Works Director, on behalf of the City
of Renton, shall execute and deliver unto the c. Such special connection charge for
property owner a release of such lien, which property abutting on a street in which a
shall be recorded, at the expense of the prop- sewer can be constructed or extended to serve
erty owner, with the King County Auditor's such property but can be connected without
office. All installment payments so made shall actual construction or extension, shall be
be applied first to interest accrued up to date, computed as if the sewer was so constructed
and the balance to principal. or extended; and the special connection charge
for property located back from the margin of
B. In addition to sewer connection permit fees as the street in which the sewer exists and out-
required by ordinance and the rules and regu- side the assessment district created therefor
lations promulgated thereunder, there is here- shall be made giving consideration to the
by imposed upon, and the owners of proper- distance of said property from the street
ties which have not previously been assessed margin. In no case shall credit be allowed for
or charged or borne an equitable share of the the cost of extra length of side sewer required
cost of the City's sewer distribution system for connection to the City's sewerage system;
shall pay, prior to any connection to a City provided, however, that in cases where appli-
sewer main, one or more of four (4) special cation of the foregoing formula to a particular
connection charges, herein defined, in an parcel of property results in a charge, which
amount to be computed under the following because of unusual conditions, or conditions
subsections of this Section. peculiar to said property only, is in excess of
charges to similar properties, the Public
1. Latecomer Fees. The imposition, collection, Works Director is authorized to reduce the
payment, and other specifics concerning this special connection charge to such an amount
charge are dealt with elsewhere in this Code. charged to properties similarly situated. (Ord.
4205, 2-20-89)
2. Special Assessment Charge. The special
assessment charge is a charge for the his- 3. Special Utility Connection Charge. The
torical costs for the sewer collection system, special utility connection charge which shall
which system shall include the sewer col- be assessed against any property which has
lection mains that lie adjacent to or near not participated in the development of the
properties that would benefit directly there- sewer system, which system shall include lift
from, that were not installed by L.I.D:s or by stations, force mains, interceptors and other
292
8-5-17 8-5-17
B3) collection mains, shall be assessed at the rate (2) Any property which has not paid a
of: special utility connection charge for the
property based upon the square footage —
a. Four hundred seventy dollars of the property that is to be served by
($470.00) per single-family residence and the utility and is developing or subdi-
mobile home dwelling. viding further. For example, one single-
family residence on a five (5) acre tract
b. Two hundred seventy dollars ($270.00) which has paid four hundred seventy
per living unit of an apartment, condomin- dollars ($470.00) under this Section to
ium, cooperative rental, time-share, motel, connect to a sewer system will have paid
hotel, or similar multi-family occupancy resi- only for one, seven thousand five hun-
dential structure. dred (7,500) square foot lot at the rate
of six point three cents ($0.063). Addi-
c. For all other properties except City tional charges would be applied to any
properties, six point three cents ($0.063) per additional development on the property
square foot of property connected but not less at the time of development.
than four hundred seventy dollars ($470.00). -
(3) Any property which has not paid a --
d. Fees are incurred upon the granting special utility connection charge for the
by the City of a building permit, but are property based'upon the square footage
payable at the time construction inspection of the property that is to be served by
permits are issued for connection to or the utility and that requests or requires
extension of the public sewer, or in the a -larger or additional domestic water
absence of the requirement for a public works meter(s) will trigger a utility connection
permit, then at the time of granting the charge.
building permit. All other sanitary sewer
service applicants shall pay these fees at the (4) Any property which has not paid a
time of building sewer application. special utility connection charge for the
property based upon the square footage
e. Fees are due immediately, notwith- of the property that is to be served by
standing the prior subsection, if the party the utility and that is being remodeled
owing the fee sells to a third party, unless or having additions made and said work
the third party agrees to pay the charge, in is in excess of twenty five thousand dol-
writing, with the amount owing to the City lars ($25,000.00) and requires a plumb-
set forth in that writing, and further the City ing permit under the Uniform Plumbing
agrees that the third party shall be respon- Code as currently adopted by the City
sible for that fee after determination that will trigger a utility connection charge,
such an agreement would be in the City's unless it can be shown by the applicant
best interest. The burden of establishing the that no "additional water usage" will
agreement would be on the party owing the result from the construction. "Additional
fee and not on the City, and would be in the water usage" shall be defined as the
City's best interest. first time addition of a new water using
unit which may include, but not be lim-
f. When the phrase "property which has ited to toilets, sinks, tubs, showers,
not participated in development of the sys- dishwashers, hot tubs or swimming
tem" is used in this Section, it shall mean pools. The Administrator of Planning/
any of the following: Building/Public Works Department shall
make the final decision on the interpre-
(1) Any property which has not paid a tation of the determination of"additional
special utility connection charge for the water usage". The property owner may
property based upon the square footage appeal the final decision in writing,
of the property and which is connecting within fifteen (15) days, to the Board of
to Renton's sewer system for the first Public Works.
time (including but not limited to new
construction, or conversion from septic (5) Any property which has not paid a
system). special utility connection charge for the
property based upon the square footage -
1091
8-5-17 8-547
B3fb) of the property that is to be served by i. A limited exemption to the special
the utility and that is being rebuilt or utility connection charge will be granted to
reconstructed from a point where demo- Municipal corporations for portions of property
lition is required or the structure has subject to the special utility connection charge
obtained more than fifty percent (50%) to the extent that those specific areas avail-
damage from a source such as fire or able and maintained at all times for public
flood will trigger a utility connection use (e.g., ballfields adjacent to a school build-
charge. In the case of damage from a ing) shall be segregated from the fee determi-
source such as fire or flood a property nation as herein provided. In applying this
owner may prove economic hardship, to exemption to the extent possible, a single
the satisfaction of the Administrator of - straight line shall be drawn across the prop-
Planning/Building/Public Works Depart- erty separating the exempt property from the
ment and make arrangements with the property to be charged. If a single straight
City Finance Department to make pay- line would not achieve substantial equity,
ment(s) with interest, within two (2) then additional lines may be drawn to include
years time. substantial open space areas in the exemp-
tion. For purposes of this exemption, substan-
(6) Any property that is redeveloped and tial open space areas shall be at least one
the use intensified such that a four inch hundred thousand (100,000) square feet in
(4") (residential) sanitary sewer stub is area. Lines shall not be drawn closer than
required to be replaced with a six inch fifteen feet (15') to any.structure.
(6") (commercial) sanitary sewer stub, or
an additional stub is required, or a , Parking lots, driveways, walkways, similar
larger commercial stub is required to the areas and required landscape areas shall not
sewer main, then any application for the be part of the exempt area.
sewer construction permit will trigger a
utility connection charge. Administrative Fees: The applicant shall pay
the City's administrative costs for the
g. Temporary connections to the City's preparation, processing and recording the
sewage system .may be granted for a one- segregated fee. At the time of application for
time, temporary, short term use of a portion SUCC fee segregation the applicant shall pay
of the property for a period not to exceed the administrative fee of seven hundred fifty
three (3) consecutive years. Permission for dollars ($750.00).
temporary connection may be granted upon
payment of an annual fee equal to ten The exemption must be memorialized by
percent (10%) of the current special utility means of a restrictive covenant running with
connection charge applicable to that portion of the land. Should the property exempted under
the property, but not less than seven hundred this Section later develop, then that property
fifty dollars ($750.00) per year. Said fee shall shall pay the special utility connection charge
be paid annually (nonprorated), and shall be fee in place at the time of development.
nonrefundable, nontransferble (from one
portion of the property to another) and shall The Administrator of the PlanningBuilding/
not constitute a credit to the special utility Public Works Department shall make the
connection charge due at the time of final decision on the interpretation of this
permanent use of the utility system. The limited exemption and the achievement of
application for temporary connection shall substantial equity.
consist of a detailed plan and a boundary line
of the proposed development service area for j. When calculating the area to be
use in the fee determination. charged the connection charge, undeveloped
greenbelt and major easements within the
h. No special utility connection charge property shall not be included in the square
will be collected on City-owned properties. footage for the calculation of the charge.
The benefits to the utility from the use of When determining whether property is unde-
other City properties such as utility ease- velopedgreenbelts or major easements, the
meats, lift stations, and other benefits offset inquiry should be to recorded easements or
the amount of the utility connection charge dedications or restrictions on the Comprehen-
fee. sive Plan or Zoning Maps or City policies that
1091
8-5-17 8-5-17
� I
B3j) would prevent development of significant us- (D) The segregation of fees shall be
ages. This exemption is intended not to by formal, written agreement which
charge property that is undevelopable. shall be recorded as a restrictive —I
covenant running with the land.
k. The ability exists for the segregation
of the special utility connection charge in the Should theproperty exempted under this
partial development of a large parcel•of prop- Section later develop, then that property "-
erty. This segregation shall be based on the shall pay the special utility connection
following criteria and rules: charge fee in place at the time of devel-
opment.
(1) Segregation by Plat or Short Plat:
The special utility connection charge (E) The segregated area shall include,
shall be determined on the basis of the but not be limited to, all contiguous
specific platted properties being devel- existing developed land for which the
oped regardless of the parcel size. Un- SUCC fees have not been paid; all pro-
platted or large' platted parcels may be posed buildings; driveways and side- _�
platted or short-platted prior to develop- walks; parking areas; grass and land-
ment, in which case the SUCC fee will scape areas; public access areas; storm
be applied to the specific platted lots drainage facilities and detention ponds; j
being developed. and, improvements required for mitiga- -
tion of environmental impacts under the
(2) Segregation by Administrative Deter- State Environmental Policy Act (SEPA).
mination: For the partial development of
a large tract of property the owner may (F) The boundary line for the segre-
apply for a segregation of the sanitary gation of SUCC fees shall be established
sewer SUCC fee for the specific portion by survey and legal description and shall
_ of the property to be developed. The ap- not be closer than fifteen feet (15') to
plication shall consist of a detailed plan, any structure.
drafted to current adopted City sten- '
dards, of the proposed development, (G) The Administrator of the Depart-
1
which shall include a proposed boundary went of Planning/Building/Public Works
line for the SUCC fee determination. shall make the final decision on inter-
The boundary line shall be defined by pretation of the Administrator's rule for I-
an acceptable legal description. The fol- segregation of special utility connection ! j
lowing criteria shall determine the seg- charges.
regation of fees:
(A) Minimum size of area 1. Any party extending utilities that may I
segregated serve other than. that party's property may ,
for determination and payment of SUCC request a latecomer's agreement from the
fees shall be five (5) acres. City. Any party required to oversize utilities
may request that the utility participate in the
(B) Minimum size of' the remnant cost of the project. (Ord. 4321, 7-8-91)
parcel of undeveloped property for which
the SUCC fee is deferred shallbe five 4. Inspection and Approval Fees. In addition
(5) acres. to other permits and fees, there will be an
inspection/approval fee for on-site and off-site
(C) Administrative Fees: The appli- replacement and improvements which shall be
cant shall pay the City's administrative identical to that specified in Chapter 10, Title
costs for the preparation, processing and IX and any subsequent amendments thereto.
recording the segregated fee. At the time
of application for SUCC fee segregation C. If any such property for which a special con-
the applicant shall pay the administra- nection charge has been paid later becomes
tive fee of seven hundred fifty dollars subsequently included in a local improvement
($750.00). district for the construction of a sewer of the
same or similar nature, then the principal
1091
8-5-17 8-5-20
C) amount so paid shall be credited to the place concrete, with steel reinforcement; steps
assessment against such property and such will be placed at one foot (1') spacing, con-
amount shall be paid from the Waterworks forming to current safety regulations.
Utilities Fund into such Local Improvement
District Fund. (Ord. 4205, 2-20-89) The manhole covers shall be twenty four
inches (24") diameter cast iron or aluminum
frame and covers. No inside drop connections
8-5-18: PUBLIC SEWER EXTENSION: Exten- will be allowed. All connections to the man-
sions to the public sewer may be hole shall match the existing inverts or have
permitted by developer extension agreements. The an outside drop connection.
Utility Engineer shall prepare "Conditions and
Standards for Construction of Utility Developer D. Lift Stations: All lift stations, both public and
Extension". All developer extensions shall abide by for private building sewers shall have alarm
these Standards, and standby emergency operation systems. All
lift stations shall meet or exceed the specifi-
These Standards shall be updated and modified, cations of Chapter 30 of "Recommended
from time to time, in accordance with good, Standards for Sewage Works".
effective practices, the "Standard Specifications for
Municipal Public Works Construction of the Ameri- E. Comprehensive Sewerage Plan: All public sew-
can Public Works Association" to the "Recommend- er extensions shall conform to the standards
ed Standards for Sewage Work". and be consistent with the City comprehen-
sive sewerage plan.
8-6-19: PUBLIC SEWER SPECIFICATIONS: F. Public sewers installed in filled or unstable
ground, in areas with high ground water lev-
A. Public sewers shall conform to the latest els, or in areas where the potential for infil-
standards of "The Standard Specifications for tration occurs, may be required to be cast or
Municipal Public Works Construction" of the ductile iron pipe, or PVC plastic D-3034 pipe.
American Public Works Association and to the
"Recommended Standards for Sewage Works"
of the Great Lake - Upper Mississippi River 8-5-20: PENALTIES FOR VIOLATIONS OF
Board of State Sanitary Engineers, and are REGULATIONS: It shall be unlawful
subject to review by the Department of Ecol- for any person to maliciously, knowingly, wilfully or
ogy of the State of Washington. negligently break, damage, destroy, uncover, deface
or tamper with any structure, appurtenance or
B. The public sewer shall be ductile iron, AWWA equipment which is part of the City sewage works.
C 151, cast iron, AWWA C 106, or C 108,
with Type II pushon or Type III mechanical Any person violating any provision of this Ordi-
joints, together with cement mortar lining nance or who shall fail to do any act he is
three thirty-seconds inch (3/32") in accordance required to do under the provisions of this
with AWWA C 104, or polyvinyl chloride Ordinance shall upon conviction be punished by a
(PVC) plastic pipe ASTM D 3034, or concrete fine not exceeding five hundred dollars ($500.00) or
nonreinforced ASTM C14 Class 2, or concrete imprisonment not exceeding six (6) months, or by
reinforced ASTM C76; rubber gaskets for con- both such fine and imprisonment. Each day any
crete pipe shall meet ASTM C443 standards; violation of this Ordinance shall continue shall
rubber gasket for PVC pipe shall meet ASTM constitute a separate offense. (Ord. 3055, 8-9-76,
1969 standards. Minimum size shall be eight eff. 7-1-76).
inches (8") diameter.
C. Manholes shall be installed at the end of each
line, at all changes of grade, size or align-
ment, at distances no greater than four hund-
red feet (400') for fifteen inch (15") diameter
sewers or smaller. Greater spacing may be
permitted in larger sewers. Manholes shall be
a minimum of forty eight inches (48") dia-
meter, shall be precast concrete or cast in
1091
Engineers .
Planners —�
O MHIlL Economists •
Scientists kt
ti
zi
February 9, 1990
rsr, @--'�` �`SEA20080.BO
Lai
FEB 1 :, 1990 •
OF .REN TON
Mr. Ron Olsen, Utilities EngineerCITY pcp�•
City of Renton Engineering
200 Mill Avenue
Renton, Washington 98055
Subject: Pipeline Repair Materials for Aquifer Protection
Dear Ron:
This letter is written -as followup to our recent conversations
regarding the use of pressure grouts or gels for repairs to storm
and sanitary sewers within the City's aquifer protection area. Our
letter of November 21, 1989 did. not specifically address use .of
these materials.
Based on experience of others within CH2M HILL, we recommend that
pressure grouts and gels not be 'used for rehabilitation of storm
or sanitary sewers within your aquifer protection area.
In our opinion, all of these product applications have only a
limited life expectancy, on the order of five years, and are not
a long term solution to ensure the tight sewer leakage requirements .
needed in the aquifer area. Further, these product applications,
usually installed from inside' the pipeline, are more applicable to
correcting infiltration problems than to' correcting exfiltration
problems.
Sincerely, .
•
CH2M HILL •
Arthur L. Storbo, P.E.
•
•
•
CH2M HILL Seattle Office 777108th Avenue.N.E..Bellevue.Washington 206.453.5000
P.O.Box 9150a Bellevue.Washington 98009-2050
CONSTRUCTION STANDARDS FOR ZONE I OF AN APA
The following practices will be followed for any construction which shall be undertaken
within Zone 1 of an APA:
1. No temporary storage of hazardous substances on a construction site shall
be permitted unless it can be demonstrated that no other feasible site
alternative exists. Should hazardous substance storage be permitted, then
such storage shall be limited to a period not to exceed five (5) days.
2. The building permit shall specify those hazardous substances to be used
and/or temporarily stored on the construction site. These substances shall
be limited to the absolute minimum quantity required to accomplish the '
specific task.
3. All hazardous substances stored temporarily on a construction site shall be
contained within leak-proof membranes surrounded with temporary
retaining curbs. The location of temporary storage must be specified on
the building plans.
4. The construction staging area shall be located in Zone I only if no
• feasible site exists outside Zone I. The staging area shall be limited to
the minimum area absolutely required. The staging site must be specified
on the approved building plans.
S. The use of petroleum products on site shall be limited during construction
to that amount which is absolutely required.
•
6. All refueling of construction equipment shall take place outside of Zone I
if feasible. If such refueling is not feasible then the refueling area must
be covered with a leak-proof membrane surrounded by temporary
retaining walls.
•
7. All construction equipment shall be "bibbed to catch minor drips of
petroleum products. Bibs shall be drained and cleaned a minimum of
once each day.. Any vehicle which is known to be leaking petroleum
products including fuel or hydraulic fluid shall be prohibited on the
construction site. •
8. The contractor shall comply with all applicable laws relating to disposal of
hazardous substances and shall be contractually responsible for ensuring
that all subcontractors comply as well.
Aquifer Protection Ordinance-FINAL
January 30, 1992
Page 49
EXHIBIT 4
Table 1
PIPELINE MATERIAL REQUIREMENTS
PIPE DIAMETER CONSIDERATIONS •
PIPE MATERIAL <4 4-8 10-12 14-20 24-30 36-54 SUGGESTED MATERIAL SPEC (See Table 2)
Ductile'Iron,Rubber Gaskets - -
Cement.Mortar-Lined 1,2 1,2 1,2 1,2 1,2 AWWA C151,C104 a b c d n o p r
Polyethylene-Lined 1,2 1,2 1,2 1,2 1,2 AWWA C151 a b c d n o p r
Ductile Iron,Nitrile Gaskets
Cement Mortar-Lined 1,2 1,2 1,2 1,2 1,2 AWWA C151,C104 b c d I n o p r
Polyethylene-Lined 1,2,3 1,2,3 1,2,3. 1,2,3 1,2,3 AWWA C151 6 Cd e i n o p r
PVC,Rubber Gasket Joints
Blue Brute C1 150 or 200 1,2 1,2 AWWA C900 a b j l n o p r t
PVC,Nitrile Gasket Joints
Blue Brute Cl 150 or 200 1,2,3 1,2,3 AWWA C900 b i J I n o p r t
PVC,Solvent Welded Joints
Sch 80 2,3 1,2,3 1,2,3 ASTM D1784,D1785 h j k l n o p r t
Welded Steel,Rubber Gaskets
Cement Mortar-Lined • 1,2 1,2 1,2 1,2 1,2 AWWA C200,C205 a b f g h n o p r
Dielectric-Lined 1,2 1,2 1,2 1,2 1,2 AWWA C200,C210 a b f g h n o p r
Welded Steel,Welded Joints
Cement Mortar-Lined • 1,2 1,2 AWWA C200,C205 f g h n o p r
Dielectric-Lined 1,2,3 1,2,3 AWWA C200,C210 f g h n o p r
High Density Polyethylene Pipe 1 1 1 1 1 ASTM D1248 and D3350 h k p q u
Corrugated High Density Polyethylene 1 1 1 1 1 ASTM D1248 and AASHTO k p g s u
Pipe-Smooth Interior .
Insituform Liner 4,5 4,5 4,5 4,5 • 4,5 _ ASTM D638 . m n o p q r
PIPELINE SERVICE
1. Storm Sewer
2. Sanitary Sewer and Side Sewer •
3. Leachate Pipeline •
4. Rehab Existing Storm Sewer
5. Rehab Existing Sanitary Sewer
•
92-026.DOC/LLH/bh
Aquifer Protection Ordinance-FINAL
January 30, 1992
Page 50
EXHIBIT 4
Table 2
CONSIDERATIONS ON SELECTION OF PIPE MATERIALS
The( llaw...:..:;co sideralionsa`r.e used:In:t.010.nruon: 1tf'k: 'able:1 for gi4.4tive::selectiion:4f:p,..::..�
materials : �ermatenais; nrxrt.... similat eft?rinance standards:.or devela .:.:d::as:::the result:ofnevy::::::
...................... . . . .......
iatifia ;,.... iiia:•::�#saa piaeil::U::rl agif ;•:::: ��:::::; :;< ::::: �::>?::: �` ?:�:->:�`: �::: ::: : ::MERE
a. Rubber gaskets may be severely damaged by petroleum products, particularly in prolonged
exposures to concentrated flows containing little or no storm water or sanitary sewage. In
cases where heavy concentrations of petroleum products may be experienced, nitrile(Nitrile-
Butadiene; ie, NBR)gaskets should be used.
b. Gasketed joints may not be leak-proof at zero or low pressures, if improperly installed.
c. Mechanical joints may be less likely to leak at low pressures than push-on joints.
d. May need protective coatings and/or cathodic protection against external corrosion.
e. Considered most reliable gasket and lining material for ductile iron leachate pipeline.
f. Very difficult to repair linings on inside of joints in pipe smaller than 24-inch diameter.
g. Almost always needs protective coatings and cathodic protection against external corrosion.
h. Properly made joints are considered leak-proof.
i. Nitrile gaskets may require long delivery time.
_ j. Requires special attention to bedding and backfill depth to avoid structural failure of pipe.
k. Large thermal expansion coefficient. May need to limit solvent welded joints to 4-inch and
smaller pipe. May require careful evaluation of pipe installation temperature and temperature
of piped liquids to ensure joint integrity.
. 1. . Pipe not available over 12-inch diameter.
m. Insituform lining is available in 6-inch through 60-inch diameter for almost any pressure, if
sufficient pipe cross-sectional area is available.
n. Pressure grouts and gels are not acceptable for rehabilitation'or patching of storm and sanitary
sewers.
o. Suitability of pipe lining and gasket material to resist chemical attack by conveyed fluids must
be determined for each pipeline service considered.
p. All storm and sanitary sewer manholes, catch basins, and inlets should be equipped with
precast concrete bottom and sidewalls with rubber gasketed joints between sections, water-
tight epoxy grout pipe entrances through walls, and bitumastic coating of all interior floor and
wall surfaces. Manholes, catch basins, and inlets should have no leakage when hydrostatically
tested at atmospheric pressure.
q. Has good resistance to a number of chemicals, petroleum products, and hydrogen sulfide
corrosion.
92-026.DOC/Li.H/bh
r'I+
- I
Aquifer Protection Ordinance-FINAL
January 30, 1992
Page 51
EXHIBIT 4 --
I
Table 2
CONSIDERATIONS ON SELECTION OF PIPE MATERIALS -
r. "Zero leakage"test requirement may be impossible to achieve under the best conditions for any J
pipe materials because trapped air may distort test results, even in a drop-tight pipe. Pressure
and leakage test requirements should consider whether the pipe has steel slope or will stand
full of liquid. Pipelines should be tested with the intent to prevent or minimize leakage. Air
testing should not be allowed; hydrostatic testing should be as stringent as any found in the
industry.
Pipe materials,without regard for chemical attack, corrosion, or puncture, are generally ranked
as follows, in decreasing order of liquid-tight reliability:
• welded steel with welded joints
• PVC with solvent welded joints
• Insituform liner
• ductile iron with viton or rubber gaskets
• welded steel with rubber gasketed joints
• PVC with viton or rubber gasketed joints
s. Joints should consist of"heat-shrink"wrap, standard corrugated coupling, and full pipe band
clamps.
t. The use of PVC may be restricted by other Utility policy in regards to depth ofpipe cover.
u. HDPE may be adversely affected by solvents; its use is not recommended where contact with
solvents may occur.
' J
92-026.DOC/LLH/bh
,I
APPENDIX E
Sepa Checklist
APPENDIX E
SEPA CHECKLIST
131- °1
CITY OF RENTON
ENVIRONMENTAL CHECKLIST
Purpose of Checklist:
The State Environmental Policy Act (SEPA), Chapter 43.21C RCW, requires all
governmental agencies to consider the environmental impacts of a proposal before making
decisions. An Environmental Impact Statement (EIS) must be prepared for all proposals
with probably,significant adverse impacts on the quality of the environment. The purpose
of this checklist is to provide information to help you and the agency identify impacts from
your proposal (and to reduce or avoid impacts from the proposal, if it can be done) and to
help the agency decide whether an EIS is required.
Instructions for Applicants:
This environmental checklist asks you to describe some basic information about your
proposal. Governmental agencies use this checklist to determine whether the
environmental impacts of your proposal are significant, requiring preparation of an EIS.
Answer the questions briefly, with the most precise information known, or give the best
description you can.
You must answer each question accurately and carefully, to the best of your knowledge.
In most cases, you should be able to answer the questions from your own observations or
project plans without the need to hire experts. If you really do not know the answer, or if
a question does not apply to your proposal, write "do not know" or "does not apply".
Complete answers to the questions now may avoid unnecessary delays later.
Some questions ask about governmental regulations, such as zoning, shoreline, and
landmark designations. Answer these questions if you can. If you have problems, the
governmental agencies can assist you.
The checklist questions apply to all parts of your proposal, even if you plan to do them
over a period of time or on different parcels of land. Attach any additional information that
will help describe your proposal or its environmental effects. The agency to which you
submit this checklist may ask you to explain your answers or provide additional information
reasonably related to determining if there may be significant adverse impacts.
Use of Checklist for Non-project Proposals: (Please Type or Print Legibly)
Complete this checklist for Non-project proposals, even though questions may be
answered "does not apply". IN ADDITION, complete the SUPPLEMENTAL SHEET FOR
NON-PROJECT ACTIONS (part D).
For Non-project actions (actions involving decisions on policies, plans and programs), the
references in the checklist to the words "project," "applicant," and ".plpP,ertY_;\PSi§ite"
should be read as "proposal," "proposer," and "affected geographic area,"=retpectiveiy:
; 1991
k :� VIED
A. BACKGROUND
1. Name of proposed project, if applicable:
City of Renton, Comprehensive Sewer System Plan (1991)
2. Name of applicant:
City of Renton
3. Address and phone number of applicant and contact person:
Aoolicant Staff Contact
Richard J. Anderson Michael Benoit
Utility Systems Division Manager Wastewater Utility
City of Renton City of Renton
200 Mill Avenue South 200 Mill Avenue South
Renton, WA 98055 Renton, WA 98055
(206) 235-2632 (206) 277-6206
4. Date checklist prepared:
October 11, 1991
5. Agency requesting checklist:
City of Renton
Wastewater Utility
Department of Planning/Building/Public Works
6. Proposed timing or schedule (including phasing, if applicable):
The comprehensive sewer system plan addresses the policies, criteria, and
recommendations needed to construct, maintain, and manage a Wastewater utility
for full land use development (saturation) under current comprehensive land use
plans. That level of development will likely occur by the year 2040. This.
comprehensive sewer system plan will be supplemented or updated on a regular
basis or more often if needed. For example, a supplement is proposed, if
necessary, in response to the adoption of the land use element of the City's
Comprehensive Plan.
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7. Do you have any plans for future additions, expansions, or further activity related to
or connected with this proposal? If yes, explain.
Yes, the City plans to supplement or update the Comprehensive Sewer System Plan
on a regular basis or more often if needed. This study recommends that the plan be
updated for the year 1996.
8. List any environmental information you know about that has been prepared, or will
be prepared, directly related to this proposal.
Each of the projects listed in the five year capital improvement program is subject
to SEPA regulations. While some projects may be categorically exempt, most will
require a Determination of Non-significance (DNS) and some will require either a
Mitigated Determinations of Non-significance (MDNS) or possibly an Environmental
Impact Statement (EIS).
9. Do you know whether applications are pending for governmental approvals of other
proposals directly affecting the property covered by your proposal? If yes, explain.
Several individual projects within the area covered by this proposal are pending
SEPA approval. One of the projects that will have an effect on this plan would be
the proposed expansion of the Renton treatment plant by Metro. The City of
Renton Water Utility has a SEPA checklist pending for its comprehensive plan.
10. List any governmental approvals or permits that will be needed for your proposal, if
known.
The approval of the Department of Ecology and Renton City Council will be
required. Review and comment, through King County, will be made by the King
County Boundary Review Board and adjacent utility districts.
11. Give brief, complete description of your proposal, including the proposed uses and
the size of the project and site. There are several questions later in this checklist
that ask you to describe certain aspects of your proposal. You do not need to
repeat those answers on this page.
This proposal is a comprehensive sewer system plan to serve the City of Renton,
which covers an area roughly 16 square miles in size. The plan consists of several
components in which are addressed policies, criteria, assumptions and
recommendations for an extended planning area (see Figure 5) around the City
based on logical service by basin. The plan looks at the current service level and
where improvements to that level are needed. Elements of these service levels are
public health, ground water and environmental protection, facility reliability,
operation and maintenance, and financing issues. Using these factors the plan
proposes a long range plan for facility improvements including replacement, repair
or upgrading of conveyance systems; removal of lift stations; and construction of
the new interceptors required, under State law, to bring service to the areas that
are and will be designated urban. This facility's program is a proposed course of
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action to be used as a resource in developing and updating the five (5) year Capital
Improvement Program (CIP) annually and as part of the comprehensive plan will be
updated approximately every five years. Because the comprehensive plan is
programmatic and only lists general recommendations or additions that do not have
specific sites or scopes of work, this check list does not address any specific
projects or site specific conditions. These projects and their associated impacts will
be reviewed as engineering studies and scopes of work are developed and
discussed in the SEPA reviews of the individual project.
12. Location of the proposal. Give sufficient information for a person to understand the
precise location of your proposed project, including a street address, if any, and
section, township, and range if known. If a proposal would occur over a range of
area, provide the range or boundaries of the site(s). Provide a legal description, site
plan, vicinity map, and topography map, if reasonably available. While you should
submit any plans required by the agency, you are not required to duplicate maps or
detailed plans submitted with any permit applications related to this checklist.
The area covered by this comprehensive sewer system plan is the sanitary sewer
service area for the City of Renton, as shown in Figure 5. Service district
boundaries have been established by agreement and policy and would generally not
be altered by annexations. There is one exception; if a property is not currently
serviced by or have service available from another district and it is annexed to the
City, we would provide service to that annexed area. The ability to serve will be
considered as part of the annexation. Any future boundary changes will be
addressed in subsequent updates of this plan.
B. ENVIRONMENTAL ELEMENTS
1. Earth
a. General description of the site (circle one); flat, rolling, hilly, steep, slopes,
mountainous, other .
The geologic characteristics of Renton's natural landscape were
fundamentally shaped by the forces of glaciation during the last million
years. As the glaciers advanced and retreated, they deposited, compressed,
and leveled the soils that formed the plateau areas to the east and west of
the City, gouged out Lake Washington, and the wide, flat floodplain of the
Green River Valley, and determined the original routes of the Cedar and
Green Rivers. (Community Profile: Oct., 1989)
b. What is the steepest slope on the site (approximate percent slope?)
The Renton planning area contains numerous slopes within the range of 15-
25%, 25-40%, and greater than 40%, as a result of glacial scouring.
c. What general types of soils are found on the site (for example, scaly, sand,
gravel, peat, muck)? If you know the classification of agricultural soils,
•
10/11/91 Page 4
specify them and note any prime farmland.
In general, soil types are classified according to mineral composition,
topography, biological activities within the soil, climate, and the length of
time of soil development. The following description of four soil types (or
associations) existing in the Renton area is based on the U.S. Soil
_ Conservation Service's soil survey for King County. The Soils Map shows
the four soil types found in the Renton area. These types are the Alderwood
Association, the Oridia-Seattle-Woodinville Association, the Beausite-
Alderwood Association, and the Everett Association. (Community Profile:
Oct., 1989)
d. Are there surface indications or history of unstable soils in the immediate
vicinity? If so, describe.
Many of the major valleys and shoreline bluffs of Renton and_ the surrounding
area are bordered by steeply sloping unconsolidated glacial deposits that are
highly susceptible to gravity sliding.
e. Describe the purpose, type, and approximate quantities of any filling or
grading proposed. Indicate source of fill.
We do not anticipate that any of the projects identified in this plan will
require grading or filling of a site. When backfilling the trench, we will use
native material (that which was removed during excavation) if it meets
standards. If the native material is not of appropriate quality, we will import
backfill from a State approved pit(s). Any importation of backfill material will
be addressed in the environmental review during project specific planning
phases.
f. Could erosion occur as a result of clearing, construction, or use? If so,
generally describe.
Potential erosion impacts could occur during construction of program
projects.
g. About what percent of the site will be covered with impervious surfaces
after project construction (for example, asphalt or buildings)?
Program projects may rarely directly create impervious surfaces. Typically
sewers are installed in asphalt roadways or on easements where structures
are prohibited.
h. Proposed measures to reduce or control erosion, or other impacts to the
earth, if any:
When projects are developed pursuant to this comprehensive plan, the
construction of those projects will meet all erosion control requirements as
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set forth in the City's adoption of the King County Surface Water Manual or
additionally be required by a SEPA finding.
2. AIR
a. What types of emissions to the air would result from the proposal (i.e., dust,
automobile, odors, industrial wood smoke) during construction and when the
project is completed? If any, generally describe and give approximate
quantities if known.
Potential vehicular and equipment emissions may affect the ambient air
quality for a short period of time during construction of program projects.
These impacts would be addressed in environmental review during project
specific planning phases.
b. Are there any off-site sources of emission?
Potential vehicular emissions may result during the ongoing maintenance
functions of the system by City staff. All City vehicles must meet State
emissions control requirements including bi-annual emissions tests.
c. Proposed measures to reduce or control emissions or other impacts to air, if
any:
When projects are developed pursuant to the sanitary sewer comprehensive
plan, the construction of those projects will meet all City codes including
emissions control.
3. WATER
a. Surface:
1) Is there any surface water body on or in the immediate vicinity of the
site (including year-round and seasonal streams, saltwater, lakes,
ponds, wetlands)? If yes, describe type and provide names. If
appropriate, state what stream or river it flows into.
Yes. The northwest boundary of the City is the shoreline of Lake
Washington. Streams and rivers in the area include Honey Creek
which flows into May Creek and then Lake Washington. Maplewood
Creek which flows into the Cedar River and then the Lake, and
Panther Creek flows into.Springbrook Creek which is pumped into the
Green River who's waters eventually enter the Puget Sound.
Some of the large wetlands identified within the study area are the
Panther Creek wetlands, Black River Riparian Forest, Springbrook
wetland, Orillia pond and Cedar River marsh.
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•
2) Will the project require any work over, in, or adjacent to (within 200
feet) the described waters? If yes, please describe and attach
available plans.
Any projects identified within this document that are within 200 feet
of the described waters will address this issue in the SEPA and
Shoreline Permit review of the individual project. All City codes, as
well as any outside agency requirements, will be met as provided in
the SEPA finding.
It is the Wastewater Utility's goal to avoid construction in or around
wetlands. It is, however, not beyond the scope of possibility that we
will have to do work on lines existing in the vicinity of wetlands or
that engineering constraints may leave us few options for new
construction. If work is required in or around wetlands, we will
address this issue in the SEPA review for that specific project.
Reasonable effort will be made to maintain the integrity of, restore, or
replace all wetlands areas as required by State and local regulations.
3) Estimate the amount of fill and dredge material that would be placed
in or removed from surface water or wetlands and indicate the area
of the site that would be affected. Indicate the source of fill material.
Any fill and dredge material that may be placed in or removed from
surface water or wetlands will be addressed in the SEPA review of
the individual project. All City codes, as well as any outside agency
requirements, will be met as provided in the SEPA finding.
4) Will the proposal require surface water withdrawals or diversions?
Give general description, purpose, and approximate quantities if
known.
We do not anticipate that there will be any discharge to or withdrawal
from surface water. The sewer comprehensive plan proposes
elimination of on-site sewage disposal systems that could cause
discharge of contaminated waters to surface waters in the event a
failure occurs.
5) Does the proposal lie within a 100-year floodplain? If so, note
location on the site plan.
Portions of specific projects may be located within the 100 year flood
plain. These projects will address this issue in the SEPA review of
the individual projects. All City codes, as well as any outside agency
requirements, will be met as provided in the SEPA finding.
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6) Does the proposal involve any discharges of waste materials to
surface waters? If so, describe the type of waste and anticipated
volume of discharge.
Any potential discharge of waste materials to surface waters will be
addressed in the SEPA review of the individual project. All City
codes, as well as any outside agency requirements, will be met as
provided in the SEPA finding.
b. Ground:
1) Will ground water be withdrawn, or will water be discharged to
ground water? Give general description, purpose, and approximate
quantities if known.
We do not anticipate that there will be any discharge to or withdrawal
from ground water. The sewer comprehensive plan proposes
elimination of on-site sewage disposal systems that could cause
discharge of contaminated waters to ground waters in the event a
failure occurs. The study also proposes design and construction
standards for use in the Aquifer Protection Areas.
2) Describe waste material that will be discharged into the ground from
septic tanks or other sources, if any (for example: Domestic sewage;
industrial, containing the following chemicals...; agricultural; etc.).
Describe the general size of the system, the number of such systems,
the number of houses to be served (if applicable), or the number of
animals or humans the system(s) are expected to serve.
This study proposes guidelines and projects that will result in the
reduction of discharges into the ground water by reducing the
potential of failure of Renton's sewer system, and allowing for the
elimination of septic systems. This will be a beneficial impact of this
plan. Any potential discharge of waste materials into the ground will
be addressed in the SEPA review of the individual project. All City
codes, as well as any outside agency requirements, will be met as
provided in the SEPA finding.
c. Water Runoff (including storm water):
1) Describe the source of runoff (including storm water) and method of
collection and disposal, if any (include quantities, if known). Where
will this water flow? Will this water flow into other waters, If so,
describe.
There will be no runoff that can be directly attributed to the adoption
of this comprehensive plan or any completed project as described
within. Any runoff that may occur during construction of the capital
10/11/91 Page 8
improvement projects will be subject to City codes, as well as any
outside agency requirements provided in the SEPA finding.
2) Could waste material enter ground or surface waters? If so, generally
describe.
No discharge of waste materials to ground or surface waters will
result from the adoption of this comprehensive plan. The plan
discusses and proposes design and construction policies in the
Aquifer Protection Areas as well as proposing a sanitary sewer.
system that will allow for the elimination of on-site sewage disposal
systems that may be allowing the discharge of contaminated material
to surface or ground waters.
d. Proposed measures to reduce or control surface, ground, and runoff water
impacts, if any:
Proposed measures to reduce or control surface, ground, and runoff water
impacts will be addressed in the SEPA review of the individual project. All
City codes, as well as any outside agency requirements, will be met as
provided in the SEPA finding.
4. Plants
a. Check or circle types of vegetation found on the site:
X deciduous tree: alder, maple, aspen, other
X evergreen tree: fir, cedar, pine, other
X shrubs
X grass
_ crop or grain
X wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other
X water plants: water lily, eel grass, milfoil, other
X other types of vegetation
b. What kind and amount of vegetation will be removed or altered?
It is expected that localized impacts to vegetation could occur as a result of
clearing to accommodate construction of projected facilities. Any potential
removal or alteration of vegetation will be addressed in the SEPA review of
the individual project. All City codes will be followed and any necessary
removal will be mitigated at the time of application.
c. List threatened or endangered species known to be on or near the site.
It is currently unknown if threatened or endangered flora exists within the
study area. If there are threatened or endangered species identified on or
near the site of any individual project discussed within this plan, the impacts
will be considered and discussed during the SEPA review of that project.
10/11/91 Page 9
Threatened or endangered species will be avoided, relocated or replaced
wherever possible.
d. Proposed landscaping, use of native plants, or other measure to preserve or
enhance vegetation on the site, if any:
Any potential landscaping, use of native plants, or other measures to
preserve or enhance vegetation on site will be addressed in the SEPA review
of the individual project.
5. Animals
a. Circle any birds and animals which have been observed on or near the site or
are known to be on or near the site:
A wide variety of birds and animals native to the Puget Sound Lowlands are
found within the study area. The more common are underlined below:
Birds: hawk, heron, eagle. songbirds, other woodpecker, wren, duck,
Canadian goose. and owl
Mammals: deer, bear, elk, beaver, raccoon squirrel, weasel and other
Fish: bass, salmon, trout, herring, shellfish, other.
b. List any threatened or endangered species known to be on or near the site.
Protected species such as the bald eagle have been observed within the
study area. It is not expected that the proposed program would adversely
impact these species over the long term. Short term construction related
impacts may occur. These impacts would be discussed in the SEPA review
of the specific project and avoided wherever possible.
c. Is the site part of a migration route? If so, explain
Yes. The Cedar River is a fish migration route used by Chinook, Coho, and
Sockeye Salmon; and Steelhead and Searun Cutthroat Trout. The Catalog of
Washington Streams and Salmon Utilization contends that "for its size, the
Cedar River in this section supports one of the largest populations of salmon
in the State".
The entire State of Washington is included within the Pacific flyway
migration route. We do not anticipate any project within this plan having
any major, long term impacts on migration routes.
d. Proposed measures to preserve or enhance wildlife, if any:
Any potential measures to preserve or enhance wildlife will be addressed in
the SEPA review of the individual project. All City codes, as well as any
outside agency requirements, will be met as provided in the SEPA finding.
.
10/11/91 Page 10
6. Energy and Natural Resources
a. What kinds of energy (electric, natural gas, wood, wood stove, solar) will be
used to meet the completed project's energy needs? Describe whether it
will be used for heating, manufacturing, etc.
Some facilities, such as lift stations, will require electrical energy in order to
run the pumps and telemetry. We also use a gas powered emergency
generator to power stations in case of an electrical failure.
b. Would your project affect the potential use of solar energy by adjacent
properties? If so, generally describe.
None of the proposed project facilities would cast shadows affecting
adjacent or surrounding properties.
c. What kinds of energy conservation features are included in the plans of this
proposal? List other proposed measures to reduce or control energy
impacts, if any:
All facilities will be constructed utilizing efficient energy use systems that
will not effect safety or reliability. Whenever the option is available, sewage
lift stations will be eliminated and gravity sewers constructed to reduce the
electrical power consumption of the system.
7. Environmental Health
a. Are there any environmental health hazards, including exposure to toxic
chemicals, risk of fire and explosion, spill, or hazardous waste, that could
occur asa result of this proposal? If so, describe.
There are no environmental health hazards directly associated with the
adoption of this comprehensive plan. This plan will have a beneficial impact
by helping to reduce environmental health hazards by making sanitary sewer
service available to land uses that generate pollutants.
Renton's wastewater collection system, like any other, has the potential of
spill or environmental health hazard because of failure due to lack of funding
or personnel to maintain or replace the system as needed. This plan
documents and proposes policy and procedures to minimize the potential of
a health hazard.
The system is also susceptible to catastrophic events such as earthquakes.
We cannot plan against them, if the ground moves significantly the line will
rupture. The comprehensive plan recommends that the City Wastewater
Utility prepares an Emergency Response Plan.
10/11/91 Page 11
1) Describe special emergency services that might be required.
The Wastewater Utility's Maintenance Division and City's Emergency
Services Department's are on call, 24 hours a day, to address any
emergencies that may occur.
2) Proposed measures to reduce or control environmental health hazards,
if any:
This document details policy and design criteria, such as policies for
the design or elimination of lift stations, and design loading or design
period of our sewer facilities, intended to reduce this possibility to the
absolute minimum.
b. Noise
1) What types of noise exist in the areas which may affect your project
(for example: traffic, equipment, operation, other)?
Existing noise is not anticipated to affect construction or operation of
projects proposed in this plan.
2) What types and levels of noise would be created by or associated
with the project on a short-term or a long-term basis (for example:
traffic, construction, operation, other)? Indicate what hours noise
would come from the site.
There will not be any noise involved with the adoption of this
comprehensive plan. The projects identified in this plan will have
short term noise impacts associated with their construction. After
they are put into operation, lift stations will generate minimal levels of
noise. Underground stations would be muffled by the ground so as to
be practically silent while above ground stations will have a hum that
would be quieter than the noise of an arterial such as Sunset Blvd. or
Main Avenue.
3) Proposed measures to reduce or control noise impacts, if any:
When projects are developed pursuant to this comprehensive plan,
the construction of those projects will meet all City codes including
those regulating noise.
8. Land and Shoreline Use
a. What is the current use of the site and adjacent properties?
Current land uses within the area of this study vary from heavy industrial to
single family residential to vacant.
10/11/91 Page 12
b. Has the site been used for agriculture? If so, describe.
Many portions of this study area have a history of agricultural uses. Any
projects identified within this document that may be in an area once used for
agriculture will address this issue in the SEPA review of the individual
project. All City codes, as well as any outside agency requirements, will be
met as provided in the SEPA finding.
c. Describe any structures on the site.
Structures vary throughout the project area from residential to industrial.
This includes single family, multi-family, commercial, retail, office, light
manufacturing and heavy manufacturing.
d. Will any structures be demolished? If so, what?
When eliminating or replacing a lift station, the structure housi,ig the station
may be demonlished. Demolition of any other structures for or during the
construction any of the identified projects is not anticipated. If a structure
must be demolished, it will be addressed in the SEPA review of the individual
project. Compensation and relocation, if necessary, would be addressed in
project specific documentation. All City codes, as well as any outside
agency requirements, will be met as provided in the SEPA finding.
e. What is the current zoning classification of the site?
The Comprehensive Plan covers all areas of the City and involves all zoning
within the City code. Current zoning varies depending upon the specific
location of individual projects within the comprehensive planning area.
f. What is the current comprehensive plan designation of the site?
The 1988 City of Renton Comprehensive Plan designates land use within the
City limits. The remainder of the program planning area, which is in
unincorporated King County, uses the 1985 King County comprehensive plan
to designate land use. All of the study area in unincorporated King County is
designated "urban". Two community plans, New Castle (1988) and SOOS
Creek (1979) were used as additional information in the county areas.
g. If applicable, what is the current shoreline master program designation of the
site?
Some of the projects identified within this document are in areas identified in
the shoreline master program for the City of Renton. Any of the projects
within these areas will be addressed in the SEPA review of the individual
project. All City codes, as well as any outside agency requirements, will be
met as provided in the SEPA finding.
10/11/91 Page 13
h. Has any part of the site been classified as an "environmentally sensitive"
area? If so, specify.
Some of the projects identified within this document are in areas that may
be classified as "environmentally sensitive" in categories such as soils,
slopes, and wetlands. These projects will be addressed in the SEPA review
of the individual project to determine the alternative with the least
environmental impact. All City codes, as well as any outside agency
requirements, will be met as provided in the SEPA finding.
•
Approximately how many people would reside or work in the completed
project?
Presently, the City of Renton Sanitary Sewer System services approximately
9,750 customer accounts (domestic and commercial). This study addresses
sewer needs for full (saturation) development under current comprehensive
land use plans. When the study area identified in this plan is fully developed
(under current land use) and the necessary sewer system is in place, we
project approximately 20,000 customers.
j. Approximately how many people would the completed project displace?
It is not anticipated that any projects identified within this plan would
displace anyone within the project area. •
k. Proposed measures to avoid or reduce displacement impacts, if any:
Does not apply.
Proposed measures to ensure the proposal is compatible with existing and
projected land uses and plans, if any:
This proposed comprehensive sewer system plan was prepared to be
consistent with the City's Comprehensive Land Use Plan and Comprehensive
Water System Plan, and with the comprehensive sewer system plans of
each adjacent municipality. The Wastewater Utility will maintain
coordination with the Land Use Comp Plan by updating or amending our plan
as needed. To ensure compatibility the plan will be reviewed by all
applicable state agencies and adjacent utilities. -
9. Housing
a. Approximately how many units would be provided, if any? Indicate whether
high, middle, or low-income housing.
No housing units will be provided as a result of the adoption of this
comprehensive plan. This plan addresses the development of the sewer
• system needed for land uses under the current (1988) City land use plan.
Any housing units constructed concurrently or subsequently to projects
10/11/91 Page 14
identified in this study will be per adopted City of Renton Land Use Plans and
Policies.
The specific projects identified within this plan will be designed to handle the
capacity proposed in the Land Use Comp Plan current at that time. Sewer
capacity is but one factor in the growth of the housing supply. Development
should be per the Land Use Plan and not until all facilities (i.e. water,
emergency services, schools, transportation) are in place. Therefore, no
significant impact on housing will result from these projects.
b. Approximately how many units, if any, would be eliminated? Indicate
whether high, middle, or low-income housing.
We do not anticipate the elimination of any units by either the adoption of
this plan or any subsequent projects.
c. Proposed measures to reduce or control housing impacts, if any:
Neither the adoption of this plan nor any of the projects talked about within
this document will have any direct impacts on local or regional housing
supply. None of the projects are of a scope that would require bringing large
numbers of workers to the area for construction or operation.
10. Aesthetics
a. What is the tallest height of any proposed structure(s), not including
antennas; what is the principal exterior building material(s) proposed.
Some of the projects identified within this study will include sewage
pumping stations which may be enclosed in small fiberglass enclosures
(under 50 square feet), small permanent buildings (under 250 square feet) or
under a freestanding canopied (carport type) structure. None of these
structures are anticipated to be over 12 feet in height.
b. What views in the immediate vicinity would be altered or obstructed?
Views of project areas would be altered during construction due to clearing,
excavation, and staging activities. No public views would be permanently
blocked.
c. Proposed measures to reduce or control aesthetic impacts, if any:
If any projects identified within this study have aesthetic impacts, they will
be addressed in the SEPA review of that project. All City codes, as well as
any outside agency requirements, will be met as provided in the SEPA
finding.
10/11/91 Page 15
11. Light and Glare
a. What type of light or glare will the proposal produce? What time of day
would it mainly occur?
No light or glare will be produced by the adoption of this plan. The projects
identified within this plan may create a temporary increase in ambient
lighting during construction activity. Some lift stations may have security
lighting.
b. Could light or glare from the finished project be a safety hazard or interfere
with views?
No.
w
c. What existing off-site sources of light or glare may affect your proposal?
None.
d. Proposed measures to reduce or control light and glare impacts, if any:
Lighting will be focused and directed to mitigate any potential lighting
impacts. If any lighting over 300 watts is used, it will be shielded to prevent
light and glare impacts on the adjacent residents.
12. Recreation
a. What designated and informal recreational opportunities are in the immediate
vicinity?
This study area has numerous recreational opportunities such as facilities
belonging to the City of Renton Parks Department (including parks, trails,
community centers, and the Maplewood Golf Course), King County (such as
parks and trails), the Renton School District (play fields) and private parties
(beaches and docks).
b. Would the proposed project displace any existing recreational uses? If so,
describe.
We do not anticipate any permanent impacts to existing recreational usages.
Some of the projects identified within this plan may have temporary impacts,
such as access problems, during construction. There is also the potential for
recreational enhancement such as trails that may be developed as part of
some sewer projects.
Ii
10/11/91 Page 16
c. Proposed measures to reduce or control impacts on recreation, including
recreation opportunities to be provided by the project or applicant, if any:
Neither the adoption of this plan nor the construction of the projects
identified in the study will have any permanent impacts on recreational
opportunities. Some of the projects may have temporary impacts during
construction or the potential for recreational enhancement. These items
would be discussed in the SEPA review of the individual project. All City
codes, as well as any outside agency requirements, will be met as provided
in the SEPA finding.
13. Historic and Cultural Preservation
a. Are there any places or objects listed on, or proposed for, national state, or
local preservation registers known to be on or next to the site? If so,
generally describe.
None are known.
b. Generally describe any landmarks or evidence of historic, archaeological,
scientific, or cultural importance known to be on or next to the site.
None are known.
c. Proposed measures to reduce or control impacts, if any:
Any measures that may be necessary to reduce or control impacts will be
mitigated at the time individual projects are reviewed per SEPA
requirements. If any evidence of historical, archaeological, scientific, or
cultural importance is discovered, there will be a cessation of construction
activity until a proper survey can be completed.
14. Transportation
a. Identify public streets and highways serving the site, and describe proposed
access to the existing street system. Show on site plans, if any.
The Transportation System within the study area consists of major
transportation corridors, arterials, City streets, and local access roads. The
major transportation corridors include Interstate 405, State Route 167,
Maple Valley Highway, Sunset Highway, and the Benson Highway. The
City's sewer system is planned and constructed, in most part, to utilize
public street rights of way.
b. Is site currently served by public transit? If not, what is the approximate
distance to the nearest transit stop?
Yes. Transit service is available throughout the City.
10/11/91 Page 17
c. How many parking spaces would the completed project have? How many
would the project eliminate?
Does not apply.
d. Will the proposal require any new roads or streets, or improvements to
existing roads or streets, not including driveways? If so, generally describe
(indicate whether public or private?
The projects identified within this plan will not require any new roadways.
Construction impacts may make it necessary to make temporary
improvements to accommodate access or to restore an existing roadway.
e. Will the project use (or occur in the immediate vicinity of) water, rail, or air
transportation? If so, generally describe.
Does not apply.
f. How many vehicular trips per day would be generated by the completed
project? If known, indicate when peak volumes would occur.
There will be a temporary increase in vehicular trips during the construction
of the projects identified within this plan. The amount of vehicular trips
generated by the completed projects and the enlargement of the system
should be offset by the reduction in trips due to the replacement of high
maintenance facilities, such as old concrete lines or lift stations.
g. Proposed measures to reduce or control transportation impacts, if any:
If any of the projects identified within this document have impacts to
transportation, the impacts will be discussed in the SEPA Checklist
submitted for that project. All City codes, as well as any outside agency
requirements, will be met as provided in the SEPA finding.
15. Public Services
a. Would the project result in an increased need for public services (for
example: fire protection, police protection, health care, schools, other)? If
so, generally describe.
No.
b. Proposed measures to reduce or control direct impacts on public services, if
any.
If any of the projects identified within this document have impacts on public
services, the impacts will be discussed in the SEPA Checklist submitted for
that project. All City codes, as well as any outside agency requirements,
will be met as provided in the SEPA finding.
10/11/91 Page 18
16. Utilities
a. Circle utilities currently available at the site: electricity, natural gas, water,
refuse service, telephone, sanitary sewer, septic system, other.
Electricity, natural gas, water, refuse service, telephone, sanitary sewer,
septic systems, storm water systems.
b. Describe the utilities that are proposed for the project, the utility providing
the service, and the general construction activities on the site or in the
immediate vicinity which might be needed.
Please refer to question A-11.
C. SIGNATURE
I, the undersigned, state that to the best of my knowledge the above information is
true and complete. It is understood that the lead agency may withdraw any
declaration of non-significance that it might issue in reliance upon this checklist
should there be any willful misrepresentation or willful lack of full disclosure on my
part.
Proponent: Ct. %Ldi�. f , ,c trl. f Jir-
Name Printed: Richard J. Anderson
10/11/91 Page 19
D. SUPPLEMENTAL SHEET FOR NON-PROJECT ACTIONS
(This sheet should only be used for actions involving decisions on policies, plans and
programs. Do not use this sheet for project actions.)
Because these questions are very general, it may be helpful to read them in
conjunction with the list of the elements of the environment.
When answering these questions, be aware of the extent the proposal, or the types
of activities likely to result from the proposal, would affect the item at a greater
intensity or at a faster rate than if the proposal were not implemented. Respond
briefly and in general terms.
1. How would the proposal be likely to increase discharge to water; emissions
to air; production, storage, or release of toxic or hazardous substances; or
production of noise?
This comprehensive sewer plan is a long range proposal and documentation
of policy, design criteria, and recommended facility improvements. It will be
used as a guide in maintaining and improving the system. When we
construct any of the proposed rehabilitation or replacements, there will be
the potential of discharge to the environment, as we connect or bypass
active lines. This potential is minor, however, when compared to the
probable impact a neglected and deteriorating facility would have. It is our
intent that, by following the guidelines proposed in this plan and by using
proper construction practices, any potential discharge during construction
will be averted.
Proposed measures to avoid or reduce such increases are:
This study proposes guidelines and specific projects that will reduce the
possibility of release of toxic or hazardous substances by reducing the
potential of failure of Renton's sewer system, and allowing for the
elimination of septic systems.
2. How would the proposal be likely to affect plants, animals, fish, or marine
life?
Adoption of this plan will not directly affect plants, animals, fish or marine
life. However, there will be the potential of indirect impacts as projects
identified within the plan are constructed. Those impacted were discussed + j
in sections 6.4 and 6.5 of this checklist.
Proposed measures to protect or conserve plants, animals, fish, or marine
life are:
Any projects identified within this document that may affect plants, animals,
fish, or marine life will address this issue in the SEPA review of the individual
10/11/91 Page 20
project. Any threatened or endangered species of plants will be avoided,
relocated, or replaced wherever possible. It is not expected that the
proposed program would have any long term impact of animals or fish. All
City codes, as well as any outside agency requirements, will be met as
provided in the SEPA finding.
•
3. How would the proposal be likely to deplete energy or natural resources?
It is not anticipated that the adoption of this plan or the construction of any
projects identified within will have any significant impact on the depletion of
energy or natural resources. (See Section B.6 of this checklist.)
Proposed measures to protect or conserve energy and natural resources are:
Many projects identified in this study will remove sewage pumping stations
in favor of gravity systems and thus reduce the utilities energy consumption.
All City codes, as well as any outside agency requirements, will be met as
provided in the SEPA finding.
4. How would the proposal be likely to use or affect environmentally sensitive
areas or areas designated (or eligible or under study) for governmental
protection; such as parks, wilderness, wild and scenic rivers, threatened or
endangered species habitat, historic or cultural sites, wetlands, floodplains,
or prime farmlands?
The Wastewater Utility is creating this comprehensive plan to identify,
document, and propose policies for the maintenance and construction of our
sewer system in a manner that is consistent with the public health and
water quality objectives of the State of Washington as well as the goals set
by the City and County to protect environmental sensitive areas. It is the
Wastewater Utility's intent to strike a balance. where we avoid
environmentally sensitive areas where feasible; prevent or reduce the
maintenance or deterioration of our system; and eliminate septic systems
where they pose a potential threat to the environment. (See Sections B.1,
B.3, and B.8 of this checklist.)
Proposed measures to protect such resources or to avoid or reduce impacts
are:
Construction of the new facilities as well as the redevelopment of existing
facilities will be accomplished in a manner to protect environmentally
sensitive areas and with measures to mitigate any potential impacts. These
will be addressed on a project by project basis, as appropriate, when they
are submitted for SEPA review.
5. How would the proposal be likely to affect land and shoreline use, including
whether it would allow or encourage land or shoreline uses incompatible
10/11/91 Page 21
with existing plans?
The City's adopted Land Use Plan was reviewed to ensure that this
Comprehensive Sewer System Plan would be compatible with land and
shoreline use. The development of new facilities and redevelopment of
existing facilities will be accomplished in a manner to avoid or reduce
shoreline and land use impacts where feasible and still maintain the purpose
of a sewer utility.
This plan and the projects identified within it are not sensitive enough to land
use as to allow or disallow uses that are incompatible with existing plans.
We supply sewer service (urban services) to areas designated urban as per
State requirements. How the land or shoreline is used is determined by the
Land Use Plan.
Proposed measures to avoid or reduce shoreline and land use impacts are:
Construction of the new facilities as well as the redevelopment of existing
facilities will be accomplished in a manner to avoid or reduce shoreline and
land use impacts and with measure to mitigate any potential impacts. These
will be addressed on a project by project basis, as appropriate, when they
are submitted for SEPA review.
6. How would the proposal be likely to increase demands on transportation or
public services and utilities?
This comprehensive sewer system plan provides a guideline to help
accommodate the increased demand for sewer service that the City has
been and is expected to continue providing as the City develops. This plan
addresses the demands on the sewer system based on adopted
comprehensive and land use plans and will not increase demands on
transportation or public services and utilities.
The projects identified within this plan will be phased by priority per the
criteria set forth in the plan with emphasis put on the rehabilitation and
replacement of existing systems; aquifer protection; and removal of lift
stations. There will be times when the minimum size pipe needed will have
more capacity available then desired or when the most efficient use of funds
is to put in a larger line, designed for the build-out of the basin, when a
smaller line will be adequate in resolving the current problem. The excess
sewer capacity itself will not increase the demand of other public services.
Any subsequent development that has an impact on public services will have
to provide the additional services to satisfy the demand.
Proposed measures to reduce or respond to such demand(s) are:
This plan addresses the increased demand put on the sewer utility by
development in and around the City and what is foreseen as development
10/11/91 Page 22
occurs per the current adopted Land Use Plan. As the Land Use Plan is
updated, the Sanitary Sewer Comp Plan will also be updated.
7. Identify, if possible, whether the proposal may conflict with local, state, or
federal laws or requirements for the protection of the environment.
. This plan is in accordance with all local, state, and Federal law and
requirements for the protection of the environment.
SIGNATURE
I, the undersigned, state that to the best of my knowledge the above information is
true and complete. It is understood that the lead agency may withdraw any
declaration of non-significance that it might issue in reliance upon this checklist
should there be any willful misrepresentation or willful lack of full disclosure on my
part. �\
Proponent: 1 �'` 'u �--
dfse4144----
4 `,/
Name Printed: Richard J. Anderson .
91-171:MAB:ps Environmental Checklist
10/11/91 Page 23
CITY )F RENTON
"LL Planning/Building/Public Works Department
Earl Clymer, Mayor Lynn Guttmann,Administrator
November 27, 1991
Washington State
Department of Ecology
Environmental Review Section
Mail Stop PV-11
Olympia,WA 98504
SUBJECT: Environmental Determinations
Transmitted herewith are copies of Environmental Determinations and Environmental Checklists for those
projects reviewed by the Environmental Review Committee on November 27, 1991:
DETERMINATION OF NON-SIGNIFICANCE
COMPREHENSIVE SEWER SYSTEM PLAN
ECF-131-91
A comprehensive plan that presents policy and design criteria for the City's Wastewater
Utility and recommends facility improvements. The project is located through the City of
Renton.
The Determinations are final and may be appealed to the City's Hearing Examiner no later than 5:00 p.m.
on December 16, 1991. Any appeal must state clearly in writing why the Determination should be revised
and must be accompanied by a non-refundable$75.00 filing fee. To appeal this Declaration, you must file
your appeal document with the hearing examiner within fourteen (14) days of the date the Declaration of
Non-significance is final or the Declaration of Significance has been published in the official city newspaper.
See City Code Section 4-6-23, RCW 43.21 C.075 and WAC 197-11-680 for further details. There shall be
only one appeal of a Declaration of Non-Significance or Declaration of Significance, and if an appeal has
already been filed, your appeal may be joined with the prior appeal for hearing or may be dismissed if the
other appeal has already been heard.
If you have questions, please call Jennifer Henning or me at 235-2550.
For the Environmental Review Committee,
Donald K Erickson,AICP
Secretary
cc: Mr. Paul Reitenbach, Chief, Community Planning
Mr. Gregory M. Bush, Metro
Department of Wildlife
Ms.Gayle Kreitman, Department of Fisheries
Mr.James Lutz, Department of Transportation
Mr.Jay Laughlin, City of Seattle
Duwamish Tribal Office
Rod Malcom, Fisheries, Muckleshoot Indian Tribe
D.L Lensegrav, Puget Power
agog D /kac
200 Mill Avenue South - Renton, Washington 98055
' . APPEA�IX F
Bibliography
APPENDIX F
BIBLIOGRAPHY
CITY OF RENTON
SEWER COMPREHENSIVE PLAN
BIBLIOGRAPHY
COMPREHENSIVE SEWERAGE PLAN, Soos Creek Water and Sewer District.
Williams,Roth, & Associates,Inc. (1987)
FINDINGS AND RECOMMENDATIONS ON STRUCTURE OF METRO CHARGES TO COMPONENT
AGENCIES. Rate Structure Advisory Committee(September, 1978).
COMPREHENSIVE WATER PLAN,King County Water District No. 107. Yoshida,Inc. (October, 1986).
HEATHER DOWNS DRAINAGE BASIN FEASIBILITY STUDY FOR INTERCEPTOR SEWERS,City of Renton.
URS Company (1977).
1983 SEWER SYSTEM COMPREHENSIVE PLAN,King County Water District 108. Richard C.T.Li,Inc. (June,
1983).
KING COUNTY SEWERAGE GENERAL PLAN -FINAL EIS. Virginia Johnson (November, 1978).
ENGINEERING REPORT ON COMPREHENSIVE PLAN AND COST ESTIMATES FOR SEWAGE
COLLECTION SYSTEM, King County Water District No. 90. Hill, Ingman, Chase, & Co. (April, 1970).
WASTEWATER FACILITIES PLAN,City of Kent. URS Company, (March 1977).
COMPREHENSIVE PLAN FOR SEWER SANITARY SEWER SYSTEM,Bryn Mawr-Lakeridge Sewer District.
Hammond, Collier, &Wade-Livingstone Associates, Inc. (April, 1977).
SEWERAGE GENERAL PLAN FOR SKYWAY, King County Department of Public Works (August,1981).
COMPREHENSIVE SEWER PLAN 1983 SUPPLEMENT,City of Renton. Wilsey & Ham (1983).
COMPREHENSIVE SEWER PLAN,City of Tukwila. Horton Dennis &Associates (April, 1984).
1987 SEWER CLEANING, TV INSPECTION & GROUTING, City of Renton. Public Works Department
(February, 1987).
DEVIL'S ELBOW LIFT STATION DESIGN MEMORANDUM, Hammon, Collier, & Wade- Livingstone
Associates, Inc. (June 5, 1985).
AN ENGINEERING INVESTIGATION OF SANITARY SEWER FACILITY IMPROVEMENTS FOR THE EAST
RENTON,HEATHER DOWNS AND SOUTH HIGHLANDS AREAS,RH2 Engineering,P.S. (July, 1989).
AN ENGINEERING INVESTIGATION OF FACILITY IMPROVEMENTS FOR THE SOUTH HIGHLANDS
SANITARY SEWER BASIN,RH2 Engineering,P.S.(April, 1990).
P ELIMINARY DESIGN REPORT FOR A SANITARY SEWER INTERBASIN TRANSFER FROM THE UPPER
HEATHER DOWNS BASIN TO THE LOWER MAPLEWOOD BASIN,Dodds Engineers,Inc. (May 23, 1990).
"CRITERIA FOR SEWAGE WORKS DESIGN", State of Washington Department of Ecology (October, 1985).
"SEISMOTECHTOMIC MAP OF THE PUGET SOUND REGION, WASHINGTON, " U.S.G.S. Miscellaneous
Investigation Series Map 1-1613,Gower,H.D.,J.C. Yount and R.S. Crosson (1985).
"PREDICTION OF STRONG GROUND MOTION IN THE PUGET SOUND REGION - THE 1965
EARTHQUAKE," Bulletin of the Seismological Society of America,Page 905-922,Inhen,S.M.And D.M.Hadley
(1986).
WATER AND WASTEWATER RATES MANAGEMENT ANALYSIS,RH2 Engineering,P.S. (November 1989)
0 Y
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CITY OF RENTON
COMPREHENSIVE SEWER SYSTEM PLAN
ill‘
1 $ '' JULY 1991
PREPARED BY:
RH2 ENGINEERING, P.S.
CITY OF RENTON
COMPREHENSIVE SEWER SYSTEM PLAN
JULY 1991
City Council
Bob Edwards
Kathy Keolker-Wheeler
Nancy L. Matthews
Toni Nelson
Jesse Tanner
Richard M. Stredicke
Theresa Zimmerman
Mayor
Earl Clymer
Public Works Director
Lynn Guttmann
Attorney
Warren and Kellogg, P.S.
DSHS Regional Engineer
Moe Batra, P.E.
Prepared By
RH2 Engineering, P.S.
TABLE OF CONTENTS
CHAPTER I
SUMMARY AND INTRODUCTION
Purpose of Plan 1-1
Authorization 1-2
Scope of Study 1-2
Existing Sewer System 1-3
Policies And Design Criteria 1-3
Land Use And Adjacent Systems 1-3
Key Issues 1-4
System Analysis 1-4
Sepa 1-4
Conclusions And Recommendations 1-5
System Improvements 1-6
How To Use This Plan 1-7
CHAPTER II
OVERVIEW OF EXISTING SEWER SYSTEM
System History 2-1
System Components 2-2
Wastewater Collection Basins 2-2
Interceptors And Collection Systems 2-2
Existing Sewers 2-3
Interceptors 2-5
Metro Connections 2-6
Lift Stations 2-6
Telemetry And Control System 2-7
Operation And Maintenance 2-7
Definition of Terms 2-7
TABLE II-1 Summary of Sanitary Sewer Sizes and Pipe Material 24
TABLE II-2 METRO Connection 2-6
FIGURE 1 Existing Sewer System 2-10
FIGURE 2 Sanitary Sewer Hydraulic Profile 2-11
FIGURE 3 Sanitary Sewer Lift Stations 2-12
CHAPTER III
OPERATIONAL POLICIES
Introduction 3-1
Policies 3-1
Customer Service Policies 3-2
Financial Policies 3-5
Facility Policies S-7
Organizational Policies 3-9
TABLE III-1 Wastewater Utility Policy Outline 3-3
CHAPTER W
LAND USE POLICIES,ADJACENT SYSTEMS &DESIGN CRITERIA
Introduction 4-1
Study Area 4-1
Land Use 4-2
City of Renton 4-2
Unincorporated King County 4-8
Sphere of Influence 4-8
Adjacent Utility Systems/Joint Use and Service Agreements 4-8
Analysis and Design Criteria 4-12
Wastewater Flow rates - Definition 4-12
Wastewater Flow Criteria 4-13
Sanitary Sewer Design Criteria 4-15
Lift Station Design Criteria 4-17
Elimination of Lift Station Facilities 4-19
TABLE IV-1 Section 3.A of Comprehensive Land Use Plan 4-3
TABLE IV-2 Comprehensive Land Use Categories 4-4
TABLE IV-3 Existing Land Use for the City of Renton 4-5
TABLE IV-4 Vacant Land by Zoning Designation 4-5
TABLE W-5 Wastewater Flow Criteria 4-14
TABLE IV-6 Sanitary Sewer Design Criteria 4-17
FIGURE 4 Total Wastewater Flow and Land Use Acreage 4-6
FIGURE 5 Study Area 4-20
FIGURE 6 Existing Land Use 4-21
FIGURE 7 Adjacent Utility Systems 4-22
CHAPTER V
SYSTEM ANALYSIS &RESULTS
Introduction 5-1
Hydraulic Analysis 5-2
Structural Analysis 5-3
System-Wide Concerns 5-4
Metro - Interceptor Surcharge 5-4
Adjacent Utility Systems 5-4
Structural Problems 5-5
Earthquake Preparedness 5-6
Wastewater Collection Basins 5-7
May Creek Basin 5-8
Lower Cedar River Basin 5-10
Lake Washington East Basin 5-12
Black River Basin 5-15
Lake Washington West Basin 5-16
Duwamish Estuary Basin 5-17
Lift Stations 5_17
Telemetry And Control System 5-26
Existing Telemetry System 5-30
Proposed System Improvements 5-31
Wastewater Quality 5-32
Domestic Wastewater 5-32
I
Industrial Waste 5-33
Wastewater Quality Problems 5-34
TABLE V-1 Lift Station Inventory Summary 5-18
TABLE V-2 Commercial and Industrial Wastewater Producers 5-34
CHAPTER VI
CONCLUSIONS AND IMPROVEMENTS
Introduction 6-1
CEP Rankings 6-1
Substandard Facility 6-1
System Efficiency 6-2
Environmental Protection 6-2
Capital Improvement Description 6-4
May Creek Basin 6-6
Lower Cedar River Basin 6-9
Lake Washington East Basin 6-14
Black River Basin 6-18
Lake Washington West Basin 6-21
Duwamish Estuary Basin 6-23
System Wide Improvements 6-23
Proposed Improvements By Priority 6-25
Proposed Improvement By Project Type 6-25
Proposed Capital Improvement Plan Schedule and Cash Flow 6-28
TABLE VI-1 . Ranking Summary of Proposed Improvements 6-3
TABLE VI-2 Proposed Improvements Priority Summary by Basin 6-5
TABLE VI-3 Proposed Improvements Summary by Priority 6-26
TABLE VI-4 Proposed Improvements by Project Type 6-27
TABLE VI-5A Cost Breakdown for Proposed Improvements 6-29
TABLE VI-5B Cost Breakdown for Proposed Improvements 6-30
TABLE VI-6A Funding Sources for Proposed Improvements 6-31
TABLE VI-6B Funding Sources for Proposed Improvements 6-32
FIGURE 8 Proposed Improvements 6-33
CHAPTER VII
OPERATION AND MAINTENANCE
Sanitary Sewer System Operation 7-1
Current Operation and Maintenance Program 7-1
Normal Operations 7-1
Emergency Operations 7-7
Preventive Maintenance 7-7
Staffing 7-8
Maintenance and Operations Staff 7-8
Wastewater Utility Engineering Staff 7-10
TABLE VII-1 City Personnel and Certification 7-2
TABLE VII-2 Sanitary Saver Department Equipment 7-4
TABLE VII-3 Staffing Time for Preventive Maintenance 7-9
TABLE VII-4 Staffing Time for Operation Tasks 7-9
TABLE VII-5 Wastewater Utility Engineering Staff Time 7-12
CHAPTER VIII
FINANCIAL ANALYSIS
Introduction 8-1
Wastewater Utility Expenses and Revenue Requirements 8-1
Operating Costs and Revenues 8-2
Municipality of Metropolitan Seattle (METRO) Charges 8-2
City of Renton Operations and Maintenance 8-2
Costs 8-2
Revenue Requirements 8-8
CIP Costs and Revenues 8-8
Capital Improvement Plan Costs 8-8
Revenue Sources for CIP 8-9
City Share 8-9
Other Revenue Sources For CIP 8-10
Contingency Revenue Plan 8-13
Financial Analysis 8-13
TABLE VIII-1 Projected Sanitary Sewer Rate Increases 84
TABLE VIII-2 RMA and Comprehensive Plan CIP Cost Comparison 8-5
TABLE VIII-3A Cost Breakdown for Proposed Improvements 8-6
TABLE VIII-3B Cost Breakdown for Proposed Improvements 8-7
FIGURE 9 City Revenue Breakdown Summary 8-3
FIGURE 10 Total Revenue Requirement Summary 8-4
FIGURE 11 CIP Financial Analysis Summary 8-5
APPENDIX A
Sewage Lift Station Data Sheet
APPENDIX B
Joint Use Agreements
APPENDIX C
City of Renton Resolution No. 2764
APPENDIX D
City of Renton Municipal Code Title VIII - Chapter 7 Sewers
APPENDIX E
Sepa Checklist
APPENDIX F
Bibliography
LISTS OF TABLES AND FIGURES
i
TABLES
H-1 Summary of Sanitary Sewer Sizes and Pipe Material 2-4
11-2 Major METRO Connections 2-6
III-1 City of Renton Wastewater Policy Outline 3-3
IV-1 Section 3.A of the Comprehensive Land Use Plan 4-3
IV-2 Comprehensive Land Use Categories 44
IV-3 Existing Land Use for the City of Renton 4-5
W4 Vacant Land by Zoning Designation 4-5
IV-5 Wastewater Flow Criteria 4-14
W-6 Sanitary Sewer Design Criteria 4-17
V-1 Lift Station Inventory Snmmary 5-18
V-2 Commercial and Industrial Wastewater Producers 5-34
VI-1 Ranking Summary of Proposed Improvements 6-3
VI-2 Proposed Improvements Priority Siimmary by Basin 6-5
VI-3 Proposed Improvements Summary by Priority 6-26
VI4 Proposed Improvements by Project Type 6-27
VI-5A Cost Breakdown for Proposed Improvements 6-29
VI-5B Cost Breakdown for Proposed Improvements 6-30
VI-6A . . Funding Sources for Proposed Improvements 6-31
•
VI-6B Funding Sources for Proposed Improvements 6-32
VII-1 City Personnel and Certification 7-2
VII-2 Wastewater Utility Department Equipment 74
VII-3 Staffing Time for Preventive Maintenance 7-9
VII=4 Staffing Time for Operation Tasks 7-9
VII-5 Wastewater Utility Engineering Staff Time 7-12
VIII-1 Projected Sanitary Sewer Rate Increases 8-4
VIII-2 RMA and Comprehensive Plan CIP Cost Comparison 8-5
VIII-3A Cost Breakdown for Proposed Improvements 8-6
VIII-3B Cost Breakdown for Proposed Improvements 8-7
FIGURES
i 1 Existing Sewer System and Wastewater Collection Basins 2-10
2 Sanitary Sewer Hydraulic Profile 2-11
3 Sanitary Sewer Lift Stations 2-12
4 : Total Wastewater Flow and Land Use Acreage 4-6
5 Study Area 4-20
6 Existing Land Use 4-21
7 Adjacent Utility Systems 4-22
8 Proposed Improvements 6-33
9 City Revenue Breakdown Summary 8-3
10 Total Revenue Requirement Summary 8-4
11 CIP Financial Analysis Summary • 8-5
CHAPTER I
SUMMARY AND INTRODUCTION
I
I
I
I
0
CHAPTER I
SUMMARY AND INTRODUCTION
111 A. PURPOSE OF PLAN
The purpose of the Renton Comprehensive Sewer System Plan is to present policy and design
criteria and to recommend facility improvements: This plan will be used as a guide in
maintaining and improving the sanitary sewer system over the next five years in order to provide
the residents of the City with an effective, safe and reliable sewer system. This plan is not an
update to the Comprehensive Sewer Plan adopted in 1983; it is a complete re-evaluation of the
entire sanitary sewer system. A summary of this plan's findings and recommendations are
presented in this chapter.
The plan results from a study that evaluated the existing sanitary sewer system and developed
recommendations to resolve existing deficiencies and concerns,and to accommodate growth. The
improvements identified in this plan are based on the requirements of the Washington State
Department of Health, Washington State Department of Ecology and City Policy.
The City of Renton adopted its last Comprehensive Sewer Plan in 1983. That plan anticipated
growth in the system and proposed improvements but did not foresee all of the issues that have
arisen since that time: 1) concerns for groundwater protection, 2) significant increases in
construction cost, and 3) increases in land use densities. These issues and others are examined
in detail in this Comprehensive Sewer System Plan.
The Renton sanitary sewer system is large, and because of the topography, it is difficult to
comprehend. The condition of the current system, as well as the need for improvements, has
been documented in this report. Due to the complexity of this system and the number of issues
that must be addressed, this report is organized so that a reader may review a summary of it and
its recommendations in this chapter without reading the background or detailed information that
led to those results.
The plan provides a recognized framework for making decisions about sanitary sewer service in
the City of Renton. It is intended to aid decision makers as well as users, including the
Wastewater Utility,City Council members, the Mayor and staff, builders,developers,community
groups, and other government agencies. The plan will be a useful tool in the following ways:
• As a framework for improvements and operations that govern sanitary sewer
system developments in the City's service area. The plan provides a basis for
allocating improvements and costs to new sanitary sewer system users such as
home and apartment builders, and commercial developers. It thus provides City
officials with partial direction for approving building permits and upgrading the
system.
1-1
CHAPTER ONE
• To provide a guideline for improving the existing system so that each customer
receives adequate sanitary sewer service. It is intended that City officials be able
to use these guidelines to maintain a high quality of service at a reasonable cost.
• To provide a basis for accommodating changes that occur but that cannot be
forecast in the plan. To this end, the plan lists policy issues and operational
criteria that can be used to develop alternatives and directions for development,
improvements and operations.
Several members of the City staff have a detailed understanding of the City's sanitary sewer
system and have provided valuable input for this plan. Mr. Richard Anderson, Mr. Randall
Parsons, Mr. Mike Benoit, Mr. David Christensen,Mr. Gary Morrison and Mr. Jack Crumley are
thanked for their assistance.
B. AUTHORIZATION
On November 7, 1988, the City of Renton authorized RH2 Engineering, P. S., to prepare the
update to the Comprehensive Sewer System Plan in conformance with the Chapter 173-240
WAC.
C. SCOPE OF STUDY
The scope of study includes the following:
• Analyze the existing system to determine its deficiencies .and needed
improvements.
• Document City Council policies regarding growth and annexation.
• Coordinate plan with adjacent utility systems and identify areas for potential
service area boundary adjustments.
• Estimate wastewater flow rates using land use designations.
• Prepare a Capital Improvement Program and estimate its construction costs.
• Document, in summary form, the existing operations and maintenance program
and recommend improvements and staff additions.
• Analyze the recent financial performance of the sewer utility and develop a
financial operating projection statement.
•
1-2
Summary and Introduction
D. EXISTING SEWER SYSTEM
The City of Renton owns, operates, and maintains.its sanitary sewer system. This system
consists of approximately 153 miles of gravity sewer, 23 sewage lift stations and force mains,
and approximately 3000 manholes. Wastewater is discharged to METRO facilities at 55 locations
within the City from which it is conveyed to and treated by METRO's Renton Treatment Plant.
The existing sanitary sewer system is shown on FIGURE 1.
The City of Renton is divided into six major wastewater collection basins, each of which consist
of one or more subbasins. For the most part, these collections basins and subbasins follow the
natural drainage patterns of the Renton service area. These wastewater collections basins are
shown on FIGURE 1.
E. POLICIES AND DESIGN CRITERIA
Policies,design criteria, and standards used for planning and operating the sanitary sewer system
are based on laws and policies which originate from several sources. All these policies and
standards have the general purpose of providing an acceptable level of service to the sanitary
sewer customers. Policies presented in this plan include the following: customer service policies,
financial policies,facility policies, and organizational policies. Analysis and design criteria for
the sanitary sewer system are based on standards presented in the "Criteria for Sewage Works
Design" prepared by the Washington State Department of Ecology as well as standards set by
the Municipality of Metropolitan Seattle (METRO) and the City of Renton.
F. LAND USE AND ADJACENT SYSTEMS
Land use proposed in the City's 1983 Comprehensive Land Use Plan was used to estimate
wastewater flow rates at.saturation conditions within the City. These saturation wastewater flow
rates were used to analyze existing sewage facilities and to plan for the location and sizing of
new sewage facilities. Existing land use designations are shown on FIGURE 6.
There are several adjacent utility systems surrounding the City's existing service area,which limit
the expansion of the City's sewer system. The greatest potential for expansion of the City's
sanitary sewer system is within the May Creek and East Renton areas which currently either do
not have existing or adequate sanitary sewer facilities. The adjacent utility entities are shown
on FIGURE 7.
•
1-3
CHAPTER ONE
G. KEY ISSUES
This plan addresses the following key issues:
• . Excessive infiltration and inflow.
• Extension of sanitary sewer service areas.
• Aquifer protection and exfiltration from sanitary. sewers.
• Sewer system deficiencies including hydraulic constraints, substandard facilities, and
replacement of old pipes.
• Annexation and sewer service outside City limits.
Several of these issues were also addressed during preparations of the 1983 Comprehensive
Sewer Plan.
H. SYSTEM ANALYSIS
A hydraulic and a structural analysis were conducted to determine how well the existing system
achieved current policies and technical, engineering standards. The plan identifies where the
system failed to meet those objectives and recommends improvements to the existing system or
construction of new facilities to achieve them.
A hydraulic analysis is a computer simulation of the existing system to determine its ability to --
convey wastewater saturation flow rates. A computer model was developed and used to analyze
the system and to size future facilities. This computer model will continue to be used by the City
as an analytical, planning and management tool. A structural analysis, which is a visual
inspection of the existing system, was also conducted and was based on video, as well as actual,
physical inspections.
The analysis revealed deficiencies that cover a broad range of areas. The hydraulic deficiencies
identified are inadequate slopes (inability to achieve carrying velocities), insufficient capacity to
handle wastewater flow rates,pipes that are less than 8-inches in diameter and sections that have
reverse slopes. Structural deficiencies identified are pipe sag, and root and grease problems. The
Renton sewer system has these hydraulic and structural problems in varying degrees throughout
the system.
I. SEPA
A SEPA Checklist has been prepared for this plan and is presented in Appendix E. It is
anticipated that this proposed plan will not have a probable significant adverse impact on the
environment and that an environmental impact statement (EIS) will not be required. However,
1-4
Summary and Introduction
many of the projects proposed herein will require SEPA checklists and some will require an
environmental impact statements.
J. CONCLUSIONS AND RECOMMENDATIONS
In the development of this plan, the following conclusions were reached:
1. Two areas are seriously deficient in capacity: 1) the East Renton area, specifically
the South Highlands, Maplewood, and Heather Downs Subbasins within it,
currently has a moratorium on connections until capacity improvements have been
made, and 2) the Honey Creek Subbasin within the May Creek Basin is at
capacity and has some marginally reliable facilities.
2. A substantial percentage of the system has reached the end of its useful life and
needs to be replaced. These areas include the Downtown, North Renton and
Highland areas.
3. The City needs to perform detailed testing to obtain better engineering information
regarding the operation and hydraulic behavior of the system. Specifically, a
detailed infiltration and inflow project should be performed as well as a video
inspection to affirm this plan's evaluation and provide an improved basis for
future planning.
4. Design and construction standards need to be modified for use in aquifer
protection areas. We recommend that a zero leakage policy be adopted for sewers
within the Downtown and Maplewood aquifers. A specific example of an
extremely high water quality risk is METRO's Cedar River Interceptor sewer
which currently traverses through the Downtown aquifer. We recommend that this
sewer be relocated so that a failure or leakage is manageable, and contamination
of the City's sole source aquifer is avoided. However, a zero leakage policy
requires a special type of construction which would substantially increase costs
over standard construction costs.
5. We recommend that the City adopt the following policy regarding extension of
sewer service; where the City annexes an area that is currently unsewered by
_ another municipality, the City should provide sewer service; where annexation
occurs and sewer service is provided by another municipality, the City should
purchase the facilities from the adjacent municipality, based on the actual
depreciated cost the municipality incurred from providing the facilities to obtain
service, so long as those facilities flow by gravity to the City system.
6. The rate increases recommended in this plan should be considered as the
minimum level of increases necessary to implement the City-funded portion of the
recommended improvements. Currently, new development pays a major portion
1-5
CHAPTER ONE
of the remaining cost of recommended improvements. If funding from this
source, such as the special utility connecting fee, is not available, the City's share
of these construction costs will most likely increase.
7. The City's sewer system is complicated; the preceding conclusions and
recommendations are based on the highest priority issues, which, in our opinion,
must be confronted. However, we propose a substantial number of additional
recommended facility improvements and modifications which are further described
in Chapter VI. When we assigned them priorities, we took into consideration the
following characteristics:
a. Whether a facility is structurally deteriorating or has hydraulic
capacity problems.
b. Whether an improvement increases overall efficiency by reducing
operation and maintenance costs.
c. Whether an improvement helps protect the environment or reduces
a threat to public health.
K. SYSTEM IMPROVEMENTS
The following is a summary of proposed improvements to the Renton sanitary sewer system,
presented in this Comprehensive Sewer System Plan, to correct existing facility deficiencies and
to accommodate growth.
1. Adopt this Comprehensive Sewer System Plan in order to establish consistent City
policies and to provide the capability of efficiently planning the sanitary sewer
facility improvements. This plan should be updated at intervals of no greater than
five years in order to accommodate unforeseen changes in existing assumptions
and conditions, and for adjusting budgets and sewer service rates.
2. Replace aging and substandard sanitary sewer facilities within the City. These
sewers present a significant potential danger to the environment and public health.
3. Continue development of the gravity sewer system in order to allow the
elimination of existing sewage lift stations. These lift stations are less reliable,
require higher maintenance and operationcosts, and cause more adverse impacts
to downstream facilities than do properly planned gravity sewer systems.
4. Rehabilitate or replace the sewage lift stations that are considered to be permanent
sewage facilities. These improvements will reduce maintenance costs and increase
system reliability.
1-6
Summary and Introduction
5. Examine programs and projects that will reduce wastewater flow rates and
infiltration and inflow within the sanitary sewer system. These may be cost-
effective methods that could possibly reduce the size of sanitary sewer facilities,
thereby reducing capital expenditures.
6. Implement sanitary sewer rate increasesin order to finance capital improvement
costs as well as operation and maintenance costs in accordance with the utility
rates study.
L. HOW TO USE THIS PLAN
This plan is arranged in eight major sections:
Chapter I provides a summary of the recommendations and conclusions presented in this
Comprehensive Sewer System Plan.
Chapter II provides a general overview of the existing sewer system and a definition of
terms.
Chapter III presents specific policies that guide the operation of the sewer system.
Chapter IV examines the land use policies that guide how the City of Renton
accommodates growth; and presents the land uses,joint use agreements and design criteria
that were used to develop wastewater saturation flow rates on which the computer
hydraulic analysis was based.
Chapter V describes and analyzes all components in the existing system and presents their
recommended improvements.
Chapter VI further describes the improvements necessary to resolve existing deficiencies
and accommodate growth. The proposed improvements are also listed by priority and by
project type.
Chapter VII examines the operation and maintenance programs for the sanitary sewer
utility.
Chapter VIII presents the costs of the proposed improvements and the anticipated level
of rate increase necessary to support them.
1-7
CHAPTER II
OVERVIEW OF EXISTING SEWER SYSTEM
CHAPTER II
OVERVIEW OF EXISTING SEWER SYSTEM
This chapter presents an overview of the existing sewer system. A more extensive description
and analysis of the system, along with recommended improvements, can be found in Chapter 5.
A. OVERVIEW OF EXISTING SYSTEM
The City of Renton is approximately 16 square miles with a population of over 30,000.
Approximately 70 percent of the land area and 80 percent of the population is currently served
by sanitary sewers. The City of Renton's collection system is municipally owned, operated and
maintained and is managed by the City of Renton's Planning/Building/Public Works Department
(Public Works).
The City maintains 23 sewage lift stations; an additional six sewage lift stations are privately
owned and maintained. Wastewater is discharged to METRO facilities at 55 locations within the
City, from which it is conveyed to and treated by METRO's Renton Treatment Plant. The City
of Renton system contains approximately 3,000 manholes and 10,187 customer connections.
FIGURES 1, 2 and 3 illustrate the existing sewer system in plan and profile views.
B. SYSTEM HISTORY
Sanitary sewer facilities were first constructed in the downtown area of the City of Renton in
1910. Prior to that it was common practice to dispose of wastewater on-site or to directly
discharge it to the local estuaries. By 1940 the City's population had grown to 4,800; wastewater
was collected and treated in a large septic system located adjacent to the Black River channel.
During the 1940s,federal housing was constructed in the City to accommodate workers employed
by defense industries. By 1956 the wastewater collection system served a population of 14,800
people within the City's service area. By that time wastewater was treated in a secondary
treatment plant located near the current Renton High School Stadium. This treatment plant
discharged treated wastewater to the Cedar River.
In 1958 the Municipality of Metropolitan Seattle (METRO) was formed to solve the growing
problem of pollution in Puget Sound, Lake Washington and surrounding waters. METRO .
developed a regional plan for wastewater collection and treatment facilities in 1959 and assumed
operating responsibilities for the regional interceptors and waste treatment systems in 1962,
including Renton's secondary treatment plant. The new secondary treatment plant was
constructed between 1956 and 1962 near the intersection of Grady Way and Monster Road and
discharged into the Duwamish Water Way. This location is the current site of METRO's Renton
Treatment Plant, which serves as one of the regional treatment facilities. The City of Renton
sanitary sewers now discharge to these METRO facilities.
2-1
CHAPTER TWO
C. SYSTEM COMPONENTS
The purpose of a sanitary sewer is to,convey wastewater from its source to a point of treatment.
Since the generation of wastewater can vary considerably, there is seldom any control over the
volume of wastewater that must be conveyed at any particular time. For this reason the sanitary
sewer system is designed to accommodate a wide range of wastewater flow rates.
Thebest method for conveying wastewater is a gravity sewer system. A gravity sewer system
is made up of collector sewers, which as their name implies, collect the wastewater from the
various sources. These collector sewers then convey the wastewater to interceptor sewers, which
convey it to the point of treatment.
The sanitary sewer system must be capable of transporting all of the constituents of the
wastewater stream, which include the suspended solids, floatable solids and liquid constituents. •
Ingeneral, most of the floating materials are carried along with the flow stream; however,
suspended solids have a tendency to settle out of the waste stream, unless minimum carrying
velocities are achieved. This requires that the sanitary sewers be constructed with a minimum
slope to create a gravity flow which will result in a velocity that will continuously carry the
suspended solids portion of the waste stream.
Another major sewer system component, and typically the most vulnerable one, is the sewage
lift station. A lift station is needed when the sanitary sewer system must overcome topographic
restrictions that make it impossible or financially unfeasible to construct a gravity sewer.
However, some lift station are temporary, used only until the gravity sewer system can be built.
D. WASTEWATER COLLECTION BASINS
The City of Renton is divided into six major wastewater collection basins, as shown in FIGURE
1, which consist of one or more subbasins. These collection basins and subbasins predominantly
follow the natural drainage patterns of the Renton service area. The six major basins are 1) May
Creek, 2) Lower Cedar River, 3) Lake Washington East, 4) Black River, 5) Lake Washington
West, and 6) Duwamish Estuary.
E. INTERCEPTORS AND COLLECTION SYSTEMS
Interceptors are sewers that receive flow from collector sewers and convey wastewater to a point
for treatment or disposal. They are typically located in low lying or centralized areas in order
to facilitate the gravity flow of the wastewater. The interceptors and all other sewers make up
the collection system. Standards and guidelines for design and construction of sanitary sewers
are detailed in Chapter 4.
2-2
Overview of Existing Sewer System
The City of Renton has approximately 153 miles of gravity sewer within its service area as
displayed in plan view in FIGURE 1. Sewers shown in bold represent the major interceptors
in the system. Those shown in gray represent the collection network. The sanitary sewer
collection system is primarily comprised of 8-inch diameter sanitary sewers. The hydraulic
profile, shown in FIGURE 2, illustrates how wastewater flows through the system.
1. EXISTING SEWERS
The existing sanitary sewer system is constructed with a variety of different sewer sizes and pipe
materials. TABLE II-1 summarizes the lengths of pipe for the different pipe diameters and
materials. As illustrated in this table, a majority of the sanitary sewer system is constructed with
8-inch diameter pipe. This is consistent with the Department of Ecology criteria material for
minimum sanitary sewer sizing. The majority of pipe material within the existing system is
comprised of concrete and PVC pipe. The concrete pipe has been typically used for the older
sewers and larger diameter sewers, while the PVC pipe has been typically used for newer sewer
system installations up to 12-inches in diameter.
2-3
CHAPTER TWO
,
TABLE II-1: SUMMARY OF SANITARY SEWER SIZES AND PIPE MATERIAL '
PIPE SIZE SUMMARY
PIPE DIAMETER • LENGTH PERCENTAGE -
6-inch 2.8 miles 1.8%
8-inch 93.5 miles 61.1%
10-inch 5.3 miles 3.5%
12-inch 7.8 miles 5.1% '_
14-inch 0.2 miles 0.1%
15-inch 2.4 miles 1.6%
16-inch 0.1 miles 0.1%
18-inch 2.2 miles 1.4%
21-inch 0.8 miles 0.5% :
24-inch 1.5 miles 1.0%
Unknown 36.4 miles 23.8% j
TOTALS 153 miles 100% -
PIPE MATERIAL SUMMARY
PIPE MATERIAL LENGTH PERCENTAGE
Concrete Pipe 64 miles 41.8%
PVC Pipe 33 miles 21.6% --
Vitrified Clay Pipe 8 miles 5.2%
Lined ductile iron pipe 5 miles 3.3%
Unknown pipe type 43 miles 28.1%
TOTALS 153 miles 100%
_ I
The City sanitary sewer system also contains approximately 3,000 manholes, which join the `
various links of sanitary sewer pipe. These manholes vary in construction type from old brick
manholes to the newer precast concrete manholes. Many of the older manholes do not meet
current code for safety such as manhole covers which are less than 24-inches in diameter.
2-4 -
Overview of Existing Sewer System
2. INTERCEPTORS
A list of the sanitary sewer interceptors within the Renton system is presented below. These
interceptors are located in the following wastewater collection basins:
MAY CREEK BASIN
• Honey Creek Interceptor
• Proposed May Valley Interceptor
LOWER CEDAR RIVER BASIN
• Tiffany Park Interceptor
• South Highlands Interceptor
• Maplewood Interceptor
• Heather Downs Interceptor
• Proposed Parker PUD Interceptor
• Proposed East Renton Interceptor
LAKE WASHINGTON EAST BASIN
• Lakefront Force Main
• West Kennydale Interceptor
• North Highlands Interceptor
• Proposed East Kennydale
• Proposed Park Avenue
BLACK RIVER BASIN
• SW 16th Street Interceptor
• Talbot Hill Interceptor
• Springbrook Interceptor
LAKE WASHINGTON WEST BASIN
• West Renton Interceptor
• Tobin Street Interceptor
2-5
CHAPTER TWO
3. METRO CONNECTIONS
The Renton sanitary sewer system discharges wastewater to METRO sewer interceptors at 55
locations. The wastewater flow rates into each of these connections varies considerably,
depending on the area served by the collection system. The major METRO connections for each
subbasin are listed in TABLE II-2.
TABLE II-2: MAJOR METRO CONNECTIONS
SUBBASIN MANHOLE NO.
May Creek MH 3-4
Kennydale Lakefront MH 2-28
Kennydale MH 7-41
North Renton MH 12-202
West Renton MH 16-49
Renton Industrial (North) MH 20-57
Renton Industrial (South) MR 30-19
Panther Creek MH 26-56
Talbot Hill MH 21-26
South Renton MH 16-115
Tiffany Park MH 23-1
South Renton MH 12-205
Maplewood/Heather Downs MH 18-1
F. LIFT STATIONS
Sewage lift stations are used to convey wastewater from a low point to a higher point through
the use of a sewage pump and a pressurized force main. The City of Renton has 23 sewage lift
stations within its sanitary sewer system. The location of these lift stations is shown in FIGURE
3. The most common type is a wet well mounted lift station in which the mechanical and
electrical equipment are located above the ground surface and over a large manhole out of which
the wastewater is pumped. The second most common type is a wet well/dry well configuration
in which mechanical and electrical equipment are located underground in a sealed enclosure
adjacent to a large manhole from which the wastewater is pumped. Two other types of lift
stations include a submersible pump installation in which the sewage pumps are placed directly
in the wet well, and a pneumatic injector in which wastewater is conveyed through a force main
using pressurized air. The City has one each of these types of lift stations.
2-6
Overview of Existing Sewer System
Sewage lift stations are the most vulnerable element of a sewage collection system. Temporary
lift stations are constructed when it is too costly, at that time, to complete the gravity sewer
system; permanent lift stations are constructed when it is either physically impossible or
financially impractical to construct gravity sewers.
G. TELEMETRY AND CONTROL SYSTEM
Successful operation of any municipal sewer system requires that the municipality maintain a
comprehensive maintenance program and that they obtain accurate sewage flow rate information.
Although many additional operation and construction elements are necessary for a complete and
working system, maintenance and flow rate informationare the keys to a successful operation.
A telemetry and control system is the means by which flow rates are measured and maintenance
needs are updated.
The City currently owns and operates an analog, signal-based alarm reporting system,
manufactured by Stead Baggerly of Bellevue,Washington,which monitors each lift station. The
system includes a master console, located in the City Shops, and a remote telemetry transmitter
located in each lift station.
H. OPERATION AND MAINTENANCE
The current operation and maintenance program for the sewer utility consists of four elements:
normal operations,emergency operations,preventive maintenance and staffing. Normal operation
of the sewer system is shared by the Engineering Division and the Operation and Maintenance
Division. The program is described and evaluated in more detail in Chapter 7.
I. DEFINITION OF TERMS
Building Drain - In plumbing, that part of the lowest horizontal piping within a
• building that transports wastewater, or stormwater to .a building
sewer.
Building Sewer - In plumbing, the extension from the building drain to the public
sewer or other place of disposal. Also called house connection or
private side sewer.
Collector Sewer - A sewer that discharges into a main or trunk sewer and has no
other common sewer tributary to it, only building sewers.
Combined Sewer - A sewer intended to receive both wastewater and storm or surface
water.
2-7
CHAPTER TWO
Infiltration - Infiltration is the entrance of groundwater into the sanitary sewer
system through cracks, pores, breaks, and defective joints in the
sewer piping network.
Inflow - Inflow refers to direct flow of stormwater into sanitary sewer
systems through hookups from stormwater collection facilities and
illegal connections.
Interceptor Sewer - A sewer that receives flow from a number of trunk sewers and
conducts such wastewater to a point for treatment or disposal.
Lift Station - A sewage pumping facility which consists of a wet well for
collecting wastewater mechanical equipment such as pumps,valves
and piping; electrical and control equipment; and a force main.
Main or Trunk Sewer - The principal sewer to which collector sewers are tributary; also
called trunk sewer. A sewer that receives many collector branches
and serves a subbasin.
Outfall - The point, location, or structure where wastewater or drainage
discharges from a sewer, drain, or other conduit.
Public Works - The City of Renton's Planning/Building/Public Works Department.
Relief Sewer - 1) A sewer built to cavy flows in excess of the capacity of an
existing sewer. 2) A sewer intended to carry a portion of the flow
from a basin in which the existing sewers are of insufficient
capacity, and thus prevents overtaxing them.
Sanitary Sewer - A sewer that carries liquid and waterborne wastes from residences,
commercial buildings, industrial plants, and institutions, together
with minor quantities of ground, storm, and surface waters that are
not admitted intentionally.
Separated Sewer - A sewer intended to receive only wastewater or stormwater or
surface water.
Side Sewer - See building sewer.
Side Sewer Stub - The portion of the public sewer between the collector sewer and
the individual property line.
2-8
Overview of Existing Sewer System
Storm Sewer - A sewer that caries stormwater and surface water, street wash and
other wash waters, or drainage, but excludes domestic wastewater
and industrial wastes. Also called storm drain.
Wastewater - The spent or used water of a community or industry which contains
dissolved and suspended contaminants which cannot be discharged
directly to a lake, stream or river.
Capacity Problems - When flow rates exceed what the facility is designed to convey.
Gravity Sewer Capacity - The maximum capacity for a gravity sewer is the volume of flow
that can be carried in a sewer at a depth to diameter ratio of 0.70
which is then used in the Manning's equation.
Hydraulic Analysis - A computer simulation of a sewer system to determine if it can
adequately convey saturation, wastewater flow rates.
Lift Station Capacity - The maximum capacity for a lift station is equal to the peak, wet
weather flow which the largest pump within the lift station has
been designed to convey.
Structural Analysis - A visual inspection, conducted by the human eye or by a video
camera,to determine if any physical weaknesses or problems exist.
Saturation Condition - The point at which development is complete within a land use
designation. No further development is possible without a change
in the land use limitations.
2-9
NORTH SOUTH FIGURE 2
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i .„.., SANITARY SEWER
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LIFT STATIONS
JANUARY 18, 1991
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0 1000 2000 3000 6000 FILE: SWRCMP2
RH2 ENGINEERING, P.S.
CHAPTER III
OPERATIONAL POLICIES
CHAPTER III
OPERATIONAL POLICIES
A. INTRODUCTION
In addition to using flow rates and design criteria to analyze the existing system, each part of the
system was evaluated against the specific policies that guide it. The policies, design criteria and
standards used for planning and operating the sanitary sewer system are based on laws and
policies that originate from the following seven sources, listed in descending order, from those
with the broadest authority to the most narrow:
• Federal Regulations - Environmental Protection Agency
•. State Regulations - Department of Ecology
• METRO Policies - Municipality of Metropolitan Seattle •
• City of Renton Ordinances - City Council
• Administrative Policies - Mayor
• Department Policies - Public Works Department
• Utility Policies - Wastewater Utility Staff
The laws and policies guide the wastewater utility's operations on a day to day basis, as well as
its planning for growth and improvements. Their combined objective is to provide adequate,
reliable sanitary sewer service at a minimum cost to the customer.
The highest levels of policies--Federal Regulations, State Regulations,METRO policies, and City
of Renton Ordinances--dictate requirements that are set by law. Other lower level policies cannot
be less stringent or in conflict with those laws. The last three levels of policies, originating from
the Office of the Mayor, Public Works Department, and Wastewater Utility Section, dictate
requirements that supplement those laws. Those requirements are the specific policies
summarized in this chapter.
B. POLICIES
The sewer system's ability to achieve the above laws, policies and standards is presented in
Chapter 5. Chapter 5 and 6 identify where the system fails to meet those requirements and
recommends improvements. It is important to note that if standards are set too low, customers
will not be satisfied, and if standards are set too high, the cost of installing and operating
facilities to meet such standards will be financially unacceptable.
3-1
CHAPTER THREE
All policies and standards have the combined purpose of providing an acceptable level of service
to the sanitary sewer customers. Service,.therefore, is the most important principle that guides
construction, operation, maintenance and administration of the system. The following are
components of the City's service policy:
1. Customer Service
2. Financial
3. Facilities
4. Organization
The policies associated with each service category are identified in this chapter. TABLE III-1
illustrates the relationship between each of these categories.
1. CUSTOMER SERVICE POLICIES
This section summarizes the customer service policies used to provide a connection to the
sanitary sewer system.
Annexations (Source: City Policy, State Law)
• City annexation policies will not conflict with state regulations and guidelines.
Renton will follow state guidelines in the assumption of facilities in annexation
areas.
• Areas annexed without existing municipal sanitary sewer service will be served
by Renton.
• Areas annexed with existing sanitary sewer service must meet Renton Sanitary
Sewer Standards.
• Service to areas outside of the city limits without annexation will be evaluated by
the City Council on a case by case basis. The Public Works Department mandates
design standards and criteria for the areas requesting service without annexation.
• City Council will consider and may allow sanitary sewer service outside City
limits under the following conditions:
• A no protest agreement for annexation is signed by those obtaining service.
3-2
TABLE III-I: CITY OF RENTON WASTEWATER UTILITY POLICY OUTLINE
CITY POLICY OUTLINE
,
1
w CUSTOMER SERVICE I FINANCIAL FACILITIES ORGANIZATIONAL
w
. f
ANNEXATIONS COST OF SERVICE DESIGN CRITERIA STRUCTURE
SERVICE INSIDE CITY RATES FOR OUTSIDE CITY MAINTENANCE LEVEL OF STAFFING
TEMPORARY SERVICE LID'S/LATECOMER'S RELIABILITY RESPONSIBILITIES
EMERGENCY SERVICE METRO CHARGES VULNERABILITY RELATIONSHIP WITH
PLANNING BOUNDARIES JOINT USE OTHER DEPARTMENTS
b0
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LI
CHAPTER THREE
• Service is necessary to protect the City's drinking water supplies, or
service is necessary to convert from a failing septic tank and drainfield, or
the property served is within a drainage basin where service can be
provided with gravity flow.
• The full cost of service is paid by those served.
• Boundary Review Board approval of service area boundaries is obtained.
• City Council will consider annexations without assumption of existing
sanitary sewer facilities under the following conditions:
• The sanitary sewer facilities are operated and maintained by an adjacent
municipal utility.
•
• The adjacent utility has executed a service boundary agreement with the
City.
• The annexation area is located in a drainage basin that is better served by
the adjacent utility.
Mandatory Side-sewer Connections (Source: City Policy)
• The City encourages all residents within the City to connect to public sewers.
• Properties that are within two hundred feet of an existing sewer line which do not
connect to it will be asked to pay a charge equal to the City's sewer charge.
• Any party who has a connection available, but claims an exemption from
using it, is required to provide proof to the City that its septic system
works and that it periodically pumps and conducts follow-up tests on it.
• Since failing septic systems pose a grave, health hazard to the City's groundwater,
properties with such systems are required to connect to the public sewers.
• The charge for failing to connect should be evaluated.
• The City should research whether the low-income, infirm exemption
applies to the hook-up charge and whether the City can financially assist
people in that category.
3-4
Operational Policies
• The City should reevaluate its policy on refusing to provide sewers outside
of its limits when a threat to the City's aquifers exist.
Temporary Services (Source: City Policy)
• Compliance with standards may be deferred for temporary sanitary sewer service.
Emergency Service (Source: City Policy)
• Compliance with standards may be deferred for emergency sanitary sewer service.
• Policy criteria may be waived for emergency service.
Planning Boundaries (Source: City Policy)
• For planning purposes, the City will use sanitary sewer service boundaries
established by agreement with adjacent municipalities.
• Renton follows state law in assuming portions of adjacent sanitary sewer systems
as a result of annexation.
• Facilities will be planned and sized to serve natural basins to minimize the need
for pumping.
• Projected development and sewage flows will be based on adopted land use plans
and policies.
2. FINANCIAL POLICIES
This section details the financial policies to be used to operate the sanitary sewer system.
Cost of Service (Source: City Policy)
• The utilities will use a rate setting process that complies with standards established
by the American Public Works Association.
• Cost-based rates and additional charges established for the sanitary sewer utility
are those that 1) recover current, historical, or future costs associated with
Renton's sanitary sewer system and services, 2) are equitable charges to recover
costs from utility customers commensurate with the benefits they receive, and 3)
provide adequate and stable sources of funds to cover the current and projected
3-5
CHAPTER THREE
annual cash needs of the sanitary sewer utility.
• The existing customers of the sanitary sewer utility will pay the costs of operating
and maintaining the facilities through user rates. In addition, user rates include
a portion of the debt service incurred to finance the capital improvements and
replacements of the utility facilities.
• New customers seeking to connect to the sanitary sewer system will be required
to pay charges for an equitable share of the cost of the system. Revenue from
these charges is used to finance part of the Capital Improvement Program.
• Customers will be charged for supplemental, special purpose services through
separate ancillary charges based on the cost to provide the service. Ancillary
charges increase equitability and increase operating efficiency for services to
customers. Revenue from ancillary charges will be used to offset operations and
maintenance costs.
• The utility will maintain information systems which provide sufficient financial
and statistical information to ensure conformance with rate-setting policies and
objectives.
• Publicly owned utilities use two widely accepted methods for determining the total
revenue requirements of a sanitary sewer utility - the cash basis and the utility
basis. The sanitary sewer rates have been developed using the cash basis.
• User charges must be sufficient to provide cash for the expenses of operating and
maintaining the utility. To ensure the fiscal and physical integrity of the utility,
an amount should be set aside each year for capital expenditures from retained
earnings. That is, an amount should be set aside to cover some portion of the
depreciation of the physical plant. The amount may be transferred from the
Sanitary Sewer Fund to the Construction Fund for general purposes or for specific
purposes such as to create a reserve for main replacement.
• A Working Capital Reserve will be maintained to cover emergencies, bad debts,
and fluctuations in cash flow.
• The existing customer classes for the utility are single-family, multi-family,
commercial, industrial, governmental, and senior citizens.
• The inflation rate will be based on information provided by the Finance
Department.
3-6
Operational Policies
• The large industrial users will be charged for services on the same basis as all
other users.
• The utility will use generally accepted cost allocation principles for all cost
allocation purposes.
• The utility's fees and charges should be calculated for the service area as a whole.
Rates will be the same regardless of service location (except for the inside
City/outside City distinction discussed below).
Rates For Outside City (Source: City Policy)
• For customers residing outside the City limits, sanitary sewer rates are 1.5 times
the residential City rates.
LED's/Latecomer's (Source: City Policy, State Law)
• • Owners of properties that have not been assessed or charged an equitable share
of the cost of the sanitary sewer system shall pay, prior to connection to the
system, one or more of four charges: latecomer's fees, special assessment charge,
utility connection charge, or inspection/approval fees.
METRO Charges (Source: City Policy)
• Charges and fees levied by the Municipality of Metropolitan Seattle (METRO)
shall be passed on to customers.
3. FACILITY POLICIES
This section details the planning criteria to be used to establish an optimum behavior level
and a standard of quality for the sanitary sewer system.
Design Criteria (Source: City Policy)
• All sanitary sewer facilities shall be designed to meet the minimum requirements
and standards set forth in the "Criteria For Sewage Works Design" prepared by
the Washington State Department of Ecology and Title 8, Chapter 5 of the City
code.
• Analysis and design criteria are detailed in Chapter 4 of this plan.
3-7
CHAPTER THREE
Maintenance (Source: City Policy)
• The City shall maintain the sanitary sewer system in a safe, reliable, and efficient
operating condition with repairs and replacements provided on a scheduled basis
that acknowledges a functional and economically useful life of the equipment and
facilities.
• Equipment breakdown repairs should be made even if overtime labor is
involved.
• Equipment should be replaced before it becomes obsolete.
• Worn parts should be repaired, replaced, or rebuilt before they represent
a high probability of failure.
• Equipment that is out of service should be returned to service as soon as
possible.
• A preventive maintenance schedule shall be established for all facilities,equipment
and processes.
• Spare parts shall be stocked for all equipment items whose failure will impact 1)
the ability to meet other policy standards, or 2) the inability to continue providing
service to customers.
• Tools shall be obtained and maintained to repair all items whose failure will
impact the ability to meet other policy standards.
• Dry, heated shop space shall be available to all maintenance personnel.
• All maintenance personnel shall be trained in the procedures and techniques
necessary to efficiently perform their job descriptions.
• Maintenance shall be performed by the sanitary sewer maintenance staff and
supervised by the Field Superintendent.
• Written records and reports will be maintained on each facility and item of
equipment showing operation and maintenance history.
• The City owns and shall maintain side sewer stubs. If a side sewer becomes
plugged, the property owner shall first hire an independent plumber to investigate
3-8
Operational Policies
the problem. If it is determined that the problem exists within the City-owned
section of the side sewer, then the maintenance crews shall promptly respond and
correct the problem.
• If an existing gravity sanitary sewer must be extended in order to make a side
sewer connection, the property owner must extend the gravity sewer along the full
extent of the property.
• Restaurant and other food processing establishments shall install and maintain
grease traps.
Vulnerability ( Source: City Policy)
• Vulnerability analysis will be performed to determine a reasonable "worst case"
failure for each basin. The analysis will consider the failure of the interceptor and
trunk sewers, failure of the largest mechanical component, and power failure to
a single power grid.
Joint Use (Source: City Policy)
• All joint use facilities must comply with Renton policy and design standards.
• Joint use facilities located within the City will be maintained by the City of
Renton.
• Joint use facilities will be pursued only in those areas where they would improve
reliability or reduce operating costs.
4. ORGANIZATIONAL POLICIES
Structure (Source: City Policy)
• The Wastewater Utility shall be operated as an enterprise utility (financially self-
supporting).
• The Wastewater Utility shall consist of two divisions: planning/design and
operations/maintenance.
• Wastewater Utility management is accomplished by the Public Works Department
managers.
3-9
CHAPTER THREE
• The Wastewater Utility shall operate only the municipal sanitary sewer system.
Stormwater, water, and other utilities are not administered or operated by the
Wastewater Utility.
• Wastewater Utility customer service is performed by the Public Works Customer
Service Division (general) and by the Wastewater Utility staff (technical).
Staffing (Source: City Policy, State Requirements)
• The utility staff level is established by the City Council based on the utility
requirements and financial resources of the City.
• Personnel certification will comply with state standards. The Utility Engineer and
Maintenance Supervisor shall be certified. •
• The City will support staff training.
Responsibilities (Source: City Policy)
• The Wastewater Utility has the responsibility for sanitarysewer system operation.
• Planning, design, operations and maintenance,records management, and customer
service and construction will be accomplished by the Wastewater Utility.
Relationship with other Departments (Source: City Policy)
• The Finance Department is responsible for customer billing, payment collection,
project cost reporting and fund activity reporting.
• The Personnel Department is responsible for employee records, union labor
negotiations, and salary schedules.
• The Police Department is responsible for enforcing violations of City sanitary
sewer ordinances.
3-10
CHAPTER IV
LAND USE POLICIES, ADJACENT SYSTEMS & DESIGN CRITERIA
CHAPTER IV
LAND USE POLICIES, ADJACENT SYSTEMS & DESIGN CRITERIA
A. INTRODUCTION
This chapter describes the City of Renton's land use policies, the sewer system's connections
with adjacent utility systems, and the sewer system's design criteria. It then describes how land
use policies and design criteria were used to develop saturation flow rates that were the basis for
a hydraulic computer analysis of the existing system.
The City of Renton's land use policies and its sewer system are interconnected with adjacent
sewer systems in several ways. Existing land use provides the basis for designing properly sized
sewerage facilities,including trunks,interceptors, and lift stations. In most cases Renton's sewers
are downstream, or at the receiving end of the effluent, from the systems adjacent to the City.
Most of the basins served in part by the City are also served in part by other cities or districts.
Therefore, proper planning for Renton's sewers requires that the plans of these adjacent agencies
be evaluated.
B. STUDY AREA
As described in Chapter 2 the City of Renton serves six drainage basins, which are: 1) May
Creek, 2) Lower Cedar River, 3) Lake Washington East, 4) Black River, 5) Lake Washington
West, and 6) Duwamish Estuary. Except for Lake Washington East, all of these basins are also
served in part by another sewer agency. The extent of these basins is shown on FIGURE 1.
May Creek Basin is partially served by King County Water and Sewer District No. 107. Service
within the lower Cedar River Basin is also provided by Cedar River Water and Sewer District
and Soos Creek Water and Sewer District. In addition to Renton, the City of Tukwila, City of
Kent, and Soos Creek Water and Sewer District also provide service within the Black River
Basin. Both Renton and the City of Tukwila provide service within the Duwamish Estuary.
Parts of the Lake Washington West Basin are served by Bryn Mawr/Lakeridge Water and Sewer
District and Skyway Water and Sewer District.
The study area, shown in FIGURE 5, for this Comprehensive Sewer Plan Update was developed
using a variety of criteria. Because many of the adjacent utilities have sanitary sewer facilities
that border the Renton city limits, the study area for the most part, corresponds with the current
city limits. Deviations from this norm did occur in the following areas:
• Since Water District 90 does not currently provide sanitary sewer service within
its service area, a considerable amount of annexation pressure exists in this area.
Therefore, the study area was extended into the service area of Water District 90
out to the East Maplewood subbasin limits.
4-1
CHAPTER FOUR
• The City of Renton is currently negotiating with Soos Creek Water and Sewer
District to revise the service area boundary along their common border. For this
reason, the study area included the tentatively agreed upon service area boundary.
• Natural boundaries in certain areas make the City of Renton the logical sanitary
sewer provider to them. The study area includes the following areas of this kind:
• The area lying south of May Creek within King County Water
District 107.
• The area to the east of the Green River within the City of Tukwila.
• The area within the southern portion of the Skyway Water and
Sewer District and an area within the eastern portion of the Bryn
Mawr/Lakeridge Water and Sewer District.
C. LAND USE
1. CITY OF RENTON
Development in the service area must be in compliance with the City's Comprehensive Land Use
Plan and policies, which represent a long-range plan for growth and physical development of the
City. The current character of the City reflects the original Comprehensive Land Use Plan which
was adopted in 1965 and revised in 1968. Under this plan, industrial and commercial
development was directed toward the Central and Green River Valley areas to allow for further
expansion of the City's business center. Residential growth under the plan was primarily directed
toward the eastern areas such as the Highlands and Talbot Hill areas of the City, since the West
Hill was already developed primarily with residences. A summary of the land use that resulted
from this plan is presented in FIGURE 6.
Review and updating of the Comprehensive Land Use Plan was initiated in 1975 to incorporate
changes made in the economic, legislative, and land use philosophy of the City since the adoption
of the original plan. To accomplish this updating, the original plan was divided into four
planning areas: the Northeast Planning Area, the Southeast Planning Area, the Central Planning
Area, and the Green River Valley Planning Area. Existing and proposed land use for each area
was examined,revisions were proposed and hearings were held,with final revisions incorporated
into the Revised Comprehensive Land Use Plan. Since 1975 all four Planning Areas have been
examined, and Land Use Plans have been revised and adopted for each planning area. Since
1989 the City has been in the process of revising and updating the overall Comprehensive Plan,
a process that will not be completed in time for inclusion in this document.
4-2
Land Use Policies/Adjacent Systems/Design Criteria
Planned land use within the service area is based on the following City policy. Section 3.A of
the Comprehensive Land Use Plan recommends maximizing the use of available utility and
service resources in existing areas prior to allowing development of outlying areas. This policy
section provides the framework for current land use development and is stated in TABLE IV-1.
TABLE IV-1: SECTION 3.A OF THE COMPREHENSIVE LAND USE PLAN
3.A. LAND DEVELOPMENT OBJECTIVE: Growth and development should
occur in a timely and logical progression of the existing urban area to maximize
the use of existing services.
POLICIES:
1. To minimize the necessity for redevelopment, premature development should
only be allowed where it can be shown to be compatible with future use in the
vicinity.
2. Development beyond the urban fringe should only be allowed
where it is a consistent extension of urban services.
3. Vacant land surrounded by developed land should be given
priority for development.
4. Land where adequate public utilities are available should be
given priority for development.
5. A balance of residential, commercial, and industrial areas
should be encouraged.
6. The upgrading and/or redevelopment of marginal areas should
be encouraged.
7. The City should identify its sphere of influence.
8. Annexations should have logical boundaries.
9. To reduce processing time and effort and provide for efficient
use of existing public facilities, large annexations should be
encouraged.
10. Annexations that are economically advantageous should be
encouraged.
11. Development requirements should be definite and reasonable.
4-3
CHAPTER FOUR
The following objectives of the Comprehensive Land Use Plan are based on the policy statements
in TABLE IV-1.
• To manage growth and physical development in the City and surrounding
unincorporated areas.
• To encourage growth in existing areas where the patterns of development are
already largely set.
• To direct expansion of residential, commercial, and industrialdevelopments into
areas where land, utilities, access, and community facilities are available with the
capacity to accommodate the projected growth.
• Allow higher dwelling densities in areas capable of supporting a higher level of
development and lowering densities in areas where facilities are limited.
The existing land uses within the City have been classified into a variety of categories for the
purposes of planning and mapping. The categories used are listed in TABLE IV-2 and the
corresponding number of acres in each land use category is listed in TABLE IV-3. A summary
of the information in TABLE IV-4 is shown in graph form in FIGURE 4.
TABLE IV-2: COMPREHENSIVE LAND USE CATEGORIES
Land Use Category Domestic Wastewater Equivalent Dwelling Units(EDU's)
Single-Family Residential 1,152 GPAD 6 EDU's/Acre
Low-Density Multi-Family Residential 2,112 GPAD 12 EDU's/Acre
Medium-Density Multi-Family Residential 3,168 GPAD 18 EDU's/Acre
High-Density Multi-Family Residential 4,224 GPAD 24 EDU's/Acre
Public/Quasi Public 600 GPAD 3 EDU's/Acre
Extractive Industrial 2,800 GPAD 14.5 EDU's/Acre
Light Industrial 2,800 GPAD 14.5 EDU's/Acre
Heavy Industrial 2,800 GPAD 14.5 EDU's/Acre
Parks and Recreation 300 GPAD 1.5 EDU's/Acre
Right-of-Way 0 GPAD 0 EDU's/Acre
Greenbelt 0 GPAD 0 EDU's/Acre
4-4
Land Use Policies/Adjacent Systems/Design Criteria..
TABLE IV-3: EXISTING LAND USE FOR THE CITY OF RENTON(1989)
AREA DOMESTIC INFILTRATION TOTAL
LAND USE [ACRE] FLOWS[GPM] &INFLOW[GPM] FLOWS[GPM]
RESIDENTIAL
Single Family 2069 1669 1868 3537
Multiple Family 326 723 294 1017
Mobile Home Park 103 83 93 176
COMMERCIAL
Neighborhood Commercial 3 6 3 9
General Commercial 238 463 215 678
Community Commercial 256 498 231 729
Recreational Commercial 190 369 172 541
INDUSTRIAL
Office Park 166 323 150 473
Light Industry 180 350 163 513
Heavy Industry 551 1071 497 1568
Manufacturing 616 1198 556 1754 •
PUBLIC
Community Utility 153 0 138 138
Schools 223 93 201 294
Hospitals 34 14 31 45
Parks 481 200 434 634
Civic/Community Centers 207 86 187 273
OPEN SPACE
Open Space 51 0 46 46
Freeways/Arterials/Streets 2039 0 1841 1841
VACANT LAND 2294 2636 2071 4707
TOTALS 10,180 Acres 9,782 GPM 9,191 GPM 18,973 GPM
TABLE IV-4: VACANT LAND BY ZONING DESIGNATION FOR THE CITY OF RENTON(1989)
AREA DOMESTIC INFILTRATION TOTAL
LAND USE [ACRE] FLOWS[GPM] &INFLOW[GPM] FLOWS[GPM]
SINGLE FAMILY
G-1 Single Family 946 763 854 1617
R-1 Single Family 452 365 408 773
MULTI-FAMILY
R-2 Duplex 18 27 17 44
R-3 Multiple Family 28 62 25 87
R-4 Multiple Family 59 175 53 228
COMMERCIAL
B-1 Business Use 64 124 58 182
INDUSTRIAL
M-P Manufacturing 335 651 302 953
L-1 Light Industrial 8 16 8 24
O-P Office Park 192 373 173 546
PUBLIC
P-1 Public Use 192 80 173 253
TOTALS 2294 Acres 2636 GPM 2071 GPM 4707 GPM
4-5
.CHAPTER FOUR
TOTAL WASTEWATER FLOW
AND LAND USE ACREAGE
FIGURE 4
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Acreage
0
Residential Commercial Industrial Public Open Space Vacant Land
LAND USE CATEGORIES
4-6
Land Use Policies/Adjacent Systems/Design Criteria
The existing land use pattern of the City of Renton reflects 100 years of settlement and
expansion. The original City was settled in the broad floodplain at the confluence of the Cedar
and Black Rivers along the shore of Lake Washington. This area continues to be the heart of
Renton; its industrial uses, the airport along Lake Washington and the Central Business District
at the foot of Renton Hills are interspersed with older, single-family housing and small apartment
complexes.
Residential areas were the hills and plateaus surrounding the core area originally developed in
the county and annexed to the City. Single-family residential neighborhoods are concentrated
in the Highlands, Kennydale Hill, West Hill, Earlington Hill, Talbot Hill, and the ridges along
Maple Valley.
Along the edges of the single-family neighborhoods and the transportation corridors are
concentrations of multi-family housing. Significant concentrations exist along NE 4th Street, NE
Sunset Boulevard, SW Sunset Boulevard, and Benson Road So.
In addition to the central business district, commercial areas are concentrated along the major
arterials and freeway exchanges, including Rainier Avenue, Grady Way, Sunset Highway,
Bronson Avenue, NE 4th Street, the NE 44th Street exit, and SW 43rd Street.
The Green River Valley was annexed to Renton in the late 1950s with the intention of developing
a second industrial base. This area, which was originally the northern end of a long farming belt
along the Green River, now includes a few residual houses and a significant concentration of
manufacturing, warehousing, and office park development. A hub of commercial services is
located in the southeast corner of the City limits.
Valley Medical Center dominates the land uses along the southern portion of Talbot Hill.
Surrounding the hospital is a concentration of support facilities, including medical and dental
offices and laboratories.
Parks in the Renton area tend to be located along river channels and lake shores. Many parks
are located along the Cedar River, including: Liberty Park, Maplewood Golf Course, Cedar
River Park, Jones Park, and the Cedar River Trail. Gene Coulon Memorial Beach Park and
Kennydale Beach Park are situated directly on the shore of Lake Washington.
The City is currently bounded in the south and west by Kent and Tukwila, and to the north by
Lake Washington. Future land use is primarily a function of the location of existing vacant land
within the.City and the rezoning of existing designations. The zoning designations for the vacant
land within the City are listed in TABLE IV-4.
4-7
CHAPTER FOUR
2. UNINCORPORATED KING COUNTY
Land use within the unincorporatedportions of the study area is controlled by the 1985 King
County Comprehensive Plan. All of the study area in unincorporated King County is designated
"urban." Urban areas are those areas where most new housing and jobs will be located and
where most public spending for facilities, services,, and open space is normally focused.
Comprehensive Plan Policies R-201 and R-202 establish a goal of achieving an average density
of seven to eight dwelling units per acre within the urban area. Such an overall density goal
cannot be achieved without providing sanitary sewer service to residential development.
King County is divided into smaller planning areas called Community Planning Areas. Two
community plans, Newcastle and Soos Creek, cover most of the unincorporated areas within the
study area of this Plan. The Soos Creek Community Plan was adopted in November 1979 and
is currently in the process of being updated. According to County staff, it is expected that a
revised Soos Creek Community Plan will be forwarded to the King County Council for review
and adoption in 1991. The Newcastle Community Plan was adopted in 1983. The update
process for the Newcastle Community Plan has not been scheduled.
f
3. SPHERE OF INFLUENCE
The City of Renton has entered into an interlocal agreement with the Cities of Bellevue and
Issaquah to establish sphere of influence lines. This agreement was signed by the three
jurisdictions in 1979. The sphere of influence agreement places responsibility for long-range
planning with the City of Renton within its sphere of influence
4. ADJACENT UTILITY SYSTEMS/JOINT USE AND SERVICE AGREEMENTS
The City has entered into several joint use and service agreements with neighboring districts and
private customers when it has been economically beneficial. A list and a summary of these joint
use and service agreements is presented below. The full text for each of these agreements is
presented in Appendix B.
• The Tiffany Park Interceptor Joint Use Agreement with the Soos Creek Water and Sewer
District.
• Apollo School Lift Station Service Agreement with King County Water District 90.
• Earlington Elementary School Service Agreement.
• King County Water District No. 107 Utility Franchise Agreement.
• King County Water District No. 107 Joint Use Agreement.
• King County Sewer and Drainage District No. 4 Agreement.
• City of Kent Agreement.
• Cascade Sewer District Service Boundary Agreement.
• Bellevue/Issaquah/Renton Sphere of Influence Agreement
4-8
Land Use Policies/Adjacent Systems/Design Criteria
The City is surrounded by eight adjoining utility entities, seven of which provide sanitary sewer
services. These eight utility entities are shown on FIGURE 7. It is evident that some sewer
- franchise boundaries overlap with the City limits. These areas are also shown in FIGURE 7.
The study area.for the City's Comprehensive Sewer Plan is shown on FIGURE 5. It includes
parts of drainage basins within adjoining utility entities. 'Areas which may be considered for
service boundary adjustments are also shown in FIGURE 5.
a. KING COUNTY WATER DISTRICT NO. 107
King County Water District No. 107 provides sewer service in part of the May Creek
Basin. The District adopted a Comprehensive Sewer Plan in 1988. Its plan for serving
May Creek Basin includes diverting approximately 1,000 acres from the May Creek Basin
to the Coal Creek Basin on an interim basis. This plan is based upon two assumptions:
first, that it would be too difficult and expensive to construct a May Valley Interceptor
at this time, and second, that the City of Renton's service in the southern part of the
Basin is adequately provided by the Honey Creek Interceptor. In order to accomplish this
diversion, the District is proposing to construct three lift stations and to complete a Coal
Creek Interceptor Improvement Project.
The sewer franchise boundary for King County Water District No. 107 is shown on
FIGURE 7. Two small service area overlaps occur because the City annexed part of the
District, but the District has not yet redrawn its boundaries.
The District and the City have entered into joint use agreements in the past in order to
provide for the construction of sanitary sewer facilities. Joint use agreements will
continue to be needed as the May Creek Basin develops. The existing service area gap
which is located south of May Creek and east of Honey Creek may best be served by the
City. This service area gap is shown on FIGURE 5.
b. KING COUNTY WATER DISTRICT NO. 90
King County Water District No. 90 does not currently provide sanitary sewer service.
However, the District does have a sewer franchise boundary which is shown on FIGURE
7. The District had a Comprehensive Sewer Plan prepared in 1970, but has not proceeded
with the formation of a sewer district due to opposition from the community.
Since the District is reluctant to provide sewer service within its franchise boundaries,the
City is experiencing annexation pressures from property owners adjacent to the City
limits. These annexation requests are for the purpose of obtaining sewer service. For
this reason and due to natural drainage patterns, the study area shown on FIGURE 5
4-9
CHAPTER FOUR
extends outside the current City limits.
c. CEDAR RIVER WATER AND SEWER DISTRICT
Cedar River Water and Sewer District provides service to parts of the Lower Cedar River
Basin. However, only a small fraction of the wastewater from Cedar River Water and
Sewer District ultimately flows through the City of Renton's system by flowing through
the Soos Creek Water and Sewer District. The majority of sewage from Cedar River
Water and Sewer District flows directly into METRO's Cedar River Interceptor located
along the Maple Valley Highway. The District's last Comprehensive Sewer Plan was
adopted in 1983. According to the District's engineer, a revised Sewer Plan for Cedar
River Water and Sewer District is expected in 1991.
The sewer franchise boundary for Cedar River Water and Sewer District is shown on •
FIGURE 7. A service area overlap occurs as a result of the City's recent annexation of
the park area located east of the Maplewood Golf Course. Currently, no sewage facilities
are required; the City will provide these services.
The Wasmeta Park area is a service area gap between the City and the District. Currently
no sanitary sewer facilities exist within this area. If sewer service is needed or required,
the City should provide it because it is on the north side of the Cedar River, and the
remaining service area of the Cedar River Water and Sewer District is on the south side.
d. SOOS CREEK WATER AND SEWER DISTRICT
Soos Creek Water and Sewer District adopted a Comprehensive Plan in 1987. The plan
acknowledges several service area overlaps with the City of Renton. The District also
proposes providing sewer service within portions of the Black River Basin within the City
of Renton.
Renton has an agreement with Soos Creek Water and Sewer District for joint use of a
sewer interceptor in the Tiffany Park Subbasin. The Springbrook Interceptor, owned by
the Soos Creek Water and Sewer District located on So. 192nd Street, could provide
service to the southernmost portions of the City of Renton. Soos Creek Water and Sewer
District currently has a sewer line in 96th Avenue So. north of So. 192nd Street within
the City limits. Its 1987 Comprehensive Plan shows the District providing service on
both the east and west sides of 96th Avenue So. within the Renton city limits.
The sewer franchise boundary for Soos Creek Water and Sewer District is shown on
FIGURE 7. Several service area overlaps occur because the City and the District are
currently negotiating revisions to the service area boundaries between them. These
4-10
Land Use Policies/Adjacent Systems/Design Criteria
proposed revisions are shown on FIGURE 5. This agreement proposes that the City
serve some areas outside the City limits, and that the District serve some areas inside the
City limits.
e. CITY OF KENT
SW 43rd Street is the principal dividing line between the cities of Renton and Kent.
Renton has an agreement with Kent to serve a small area south of SW 43rd Street east
of 72nd Avenue So. and west of the Puget Sound EIectric Railway right-of-way. The
City of Kent Comprehensive Sewer Plan was adopted in 1980. The Renton and Kent
City limits adjoin each other as shown on FIGURE 7, and there are no service area
overlaps or gaps between the two entities, except for that one small area.
f. CITY OF TUKWILA •
A portion of the City of Tukwila east of the Burlington Northern Railroad and south of
Longacres is served by the City of Renton. Tukwila also discharges from a lift station
into the METRO Sewer System within the City of Renton along SW 10th Street.
Tukwila prepared a Comprehensive Sewer Plan in 1984. This Plan shows the extension
of sanitary sewer service by the City of Tukwila into the City of Renton in the vicinity
of Longview Avenue So. and SW 33rd, ultimately connecting into the existing Renton
system along the railroad right-of-way. The 1984 Tukwila Plan also shows relocating two
sewer mains north of I-405 in the vicinity of 72nd Avenue So. and SW 10th Street within
the City of Renton in order to eliminate a pump station within the City of Tukwila.
The Renton and Tukwila City limits adjoin each other as shown on FIGURE 7.
However, a natural service area boundary between the two entities is the Green River,
which might be considered for a service area adjustment as shown on FIGURE 5.
g. SKYWAY WATER AND SEWER DISTRICT
A copy of the 1984 Comprehensive Sewer Plan for Skyway Water and Sewer District was
obtained from the District's engineer. The Plan appears to be a compilation of previous
plans that were done for King County and the predecessor to Skyway Water and Sewer
District. It appears, however, that no facilities within the Skyway service area directly
discharge to, or would affect, facilities within the Renton sewer system.
The Skyway Water and Sewer District does not have a sewer franchise boundary
according to records provided by King County. However, the franchise boundary may
still be under the former King County Sewer and Drainage District No. 4. The service
area from the District's Comprehensive Sewer Plan is shown on FIGURE 7.
Approximately 60 percent of the District is served with sanitary sewer facilities. A large
4-11
CHAPTER FOUR
area within the District, as well as in the service area gap to the south of the District,
could be served by gravity to the Renton sanitary sewer system. This area is shown on
FIGURE 5.
h. BRYN MAWR-LAKERIDGE WATER AND SEWER DISTRICT
According to maps provided by the District, Bryn Mawr-Lakeridge Water and Sewer
District serves a small area of Renton along Rainier Avenue near So. 117th Place.
Sewage from Bryn Mawr/Lakeridge discharges into the METRO System within the City
of Renton at the north end of the Renton Airport.
The sewer franchise boundary for Bryn Mawr-Lakeridge Water and Sewer District is
shown on FIGURE 7. The eastern part of the District could be served by gravity to the
Renton system. This area is shown on FIGURE 5. However, unless this area is annexed
to the City, there is no advantage to this service area transfer.
D. ANALYSIS AND.DESIGN CRITERIA
This section presents the design criteria for sanitary sewage collection system analysis and design.
Analysis is necessary to determine the adequacy of the existing system and to identify needs for
future facilities. The analysis and design criteria are based on "Criteria For Sewerage Works
Design" prepared by the Washington State Department of Ecology, the Municipality of
Metropolitan of Seattle (METRO), the City of Renton Standards, actual water usage records, and
other accepted engineering criteria and standards for sanitary sewer design and construction.
1. WASTEWATER FLOW RATES - DEFINITION
Wastewater in the service area is generated by the population and by non-residential users within
it. The Renton Comprehensive Land Use Plan identifies eleven, separate land use categories.
For sanitary sewer planning purposes, these eleven categories were used to determine wastewater
flow rates for the hydraulic computer model. The eleven land use categories are listed in
TABLE IV-3.
Eleven saturation land use populations were determined by calculating the areas of each
designated land use category. This was accomplished by assigning land use designations to all
parcels within a land use boundary on a computer base map that was used for producing the
figures for this plan. Saturation was defined as the point at which development is complete
within a land use designation.
4-12
Land Use Policies/Adjacent Systems/Design Criteria
2. WASTEWATER FLOW CRITERIA
Wastewater flows can be divided into four major components, which are 1) domestic wastes, 2)
industrial wastewater, 3) infiltration, and 4) inflow. The wastewater flow criteria used for each
or these four components is presented in TABLE IV-5.
a. DOMESTIC WASTEWATER
Domestic wastewater flows are essentially equal to winter-time water consumption and
are are typically established on a per capita basis. The average domestic wastewater flow
used for analysis and design of the sanitary sewer system is 80.gallons per day per
person.
b. COMMERCIAL/INDUSTRIAL WASTEWATER
Commercial and industrial wastewater is defined as the wastewater generated from a
specific commercial or industrial operation. Commercial and industrial wastewater does
not include waste generated by employees of the industry, which is considered domestic
waste and excluded from this category.
c. INFILTRATION
Infiltration is the entrance of groundwater into the sanitary sewer system through cracks,
pores, breaks, and defective joints in the sewer piping network. Additional infiltration
also results from the entrance of storm- water through manhole covers. The quantity of
water that may infiltrate into a sanitary sewer system depends upon many variables, such
as the age of the system, materials used in construction, and the service area's hydrology,
soils and groundwater level. However, the design of the sewer system, including mains,
laterals, and individual connections, along with inspection during construction, will have
substantial impact on the quantity of infiltration.
Due to improvements in construction materials and practices, systems installed after 1960
generally show a decrease in the quantity of groundwater infiltration. The use of non-
porous piping materials and rubber-gasketed type joints will help reduce infiltration and
will improve the condition and life of the sanitary sewer system. The design allowance
for infiltration is shown in TABLE IV-5.
4-13
CHAPTER FOUR
TABLE IV-5: WASTEWATER FLOW CRITERIA
Average Domestic Sewage Flow: 80 gals/day/person
Average Population Density 2.40 person/dwelling unit single-family
(U.S Census Bureau, 1980): 2.20 person/dwelling unit multi-family
Residential Density:
Single-Family Residential 6 dwelling units/acre
Low-Density, Multi-Family
Residential 12 dwelling units/acre
Medium-Density, Multi-
Family Residential 18 dwelling units/acre
High-Density, Multi- _
Family Residential 24 dwelling units/acre
Commercial and Industrial Sewage Flows':
Light Industrial 2800 gals/acre/day (gpad)
Heavy Industrial site specific
Commercial 2800 gpad
Office 2800 gpad
Recreation 300 gpad
Green Belt 0 gpad
Public 600 gpad
Manufacturing Park 2800 gpad
Infiltration and Inflow (METRO):
Peak Infiltration 700 gpad
Peak Inflow 600 gpad
Peaking Factors
System Average 2.0 x
Depth/diameter ratio 0.70
* Design flow criteria vary considerably, depending upon land use
4-14
Land Use Policies/Adjacent Systems/Design Criteria
d. INFLOW
Inflow refers to direct flows of stormwater into sanitary sewer systems through hookups
from stormwater collection facilities and illegal connections. Stormwater inflow is due
mainly to unauthorized connections to the sanitary sewer.system. The enforcement of
regulations banning the illegal connections to the sanitary sewer system along with
continued efforts to identify and correct previously unauthorized connections minimize
stormwater inflow. The design allowance for stormwater inflow is shown in TABLE IV-
5.
3. SANITARY SEWER DESIGN CRITERIA
All sewer lines within the City of Renton shall be designed in accordance with good engineering
practice by a professional engineer with minimum design criteria presented in Chapter 2 of the
"Criteria for Sewerage Works Design," prepared by the State of Washington Department of
Ecology, October 1985, or as superseded by subsequent updates. This chapter includes standards
and guidelines for design considerations (minimum pipe sizes, pipe slopes and wastewater
velocities),maintenance considerations,estimating wastewater flow rates,manhole locations,leak
testing and separation from water pipelines. These criteria have been established to ensure that
the sanitary sewers convey the sewage and protect the public health and the environment. The
sewer lines shall also conform to the latest City of Renton Standards and Specifications. Detailed
standards are included in.Title 8, Chapter 5 of the City Code which is presented in Appendix D.
Requirements relating to design are listed below.
a. DESIGN LOADING FOR SANITARY SEWER FACILITIES
Sanitary sewer system flows are composed of residential, institutional, commercial, and
industrial sewage, along with infiltration and stormwater inflow. Sanitary sewer systems
must be capable of conveying the ultimate peak flows of these wastewater sources. No
overflows shall be permitted.
b. DESIGN PERIOD
The design period is the length of time that a given facility will provide safe, adequate
and reliable service. The period selected for a given facility is based on its economic life,
which is determined by the following factors: the structural integrity of the facility, rate
of degradation,cost of replacing the facility, cost of increasing the capacity of the facility,
and the projected population growth rate serviced by the facility. Collection and
interceptor sewers are designed for the ultimate development of the contributing area.
The life expectancy for new sanitary sewers, using current design practices, is in excess
of fifty years.
4-15
CHAPTER FOUR
c. DESIGN OF SANITARY SEWER FACILIT1hS
Allowable sewer pipe shall be ductile iron, cast iron, PVC, or concrete. For normal
depth, PVC is generallypreferable, because it has longer laying lengths, which results in
fewer joints, reducing the potential for infiltration.
Gravity sewers are sized to provide capacity for peak, wet-weather flows. The smallest
diameter sewer allowed is 8-inches. All sewers will be laid on a grade to produce a mean
velocity,when flowing half-full of at least 2 feet per second. Manholes will be at least
48-inches in diameter and will be spaced at intervals not to exceed 400 feet on sewer
lines 15-inches in diameter or less, and 500 feet on sewer lines 18-inches in diameter or
larger. The design parameters are summarized in TABLE IV-6.
d. ROUGHNESS COEFFICIENT
The Manning equation shall be used to design and analyze wastewater flow characteristics
of the sanitary sewers. The Manning roughness constant [n] shall vary depending on the
pipe material. Typical values are summarized in TABLE IV-6.
e. REFERENCE DATUM
The King County Aerial Survey (K.C.A.S.) is the common datum used within the City
of Renton for design and construction of sanitary sewer facilities.
f. SEPARATION BETWEEN SANITARY AND OTHER FACILITIES
The Department of Ecology requires separation of water and sewer facilities for health
reasons. Sanitary and storm sewer facilities shall have basic separation requirements for
construction purposes. A minimum horizontal separation of five (5) feet between sanitary
and other facilities shall be maintained. Wherever possible, a horizontal separation of
seven (7) feet is desirable. These distances are measured edge to edge.
g. HYDRAULIC ANALYSIS
The sanitary sewer system hydraulic analyses will be performed using the City's hydraulic
computer model. All new developments, with the exception of developments involving
less than five single-family residences, will require an analysis. The developer shall be
responsible for paying the cost of the analysis of the sanitary sewer system. If the
analysis concludes improvements need to be made, the developer and the City may need
to negotiate about who will pay the costs.
4-16
Land Use Policies/Adjacent Systems/Design Criteria
TABLE IV-6: SANITARY SEWER DESIGN CRITERIA
Sanitary Sewer Sizing Peak Wet-Weather Flow
Minimum Sewer Size 8 inches in Diameter
Pipe Materials PVC
Reinforced Concrete Pipe
Cement Lined Ductile Iron
Cement Lined Cast Iron
Manholes
Maximum Spacing 400 feet •
Minimum Manhole Size 48 inches in diameter •
Minimum Clear Opening 23 inches in diameter
Maximum Depth 20 feet(where possible)
Separation From Water Mains
Horizontal Separation (Parallel) 10 feet
Vertical Separation (Perpendicular) 18 inches
Hydraulic Criteria
Depth to Diameter Ratio 0.70
Minimum Scouring Velocity 2 Feet Per Second
Manning Roughness Coefficient
PVC 0.011
Concrete 0.012
Lined DI/CI 0.012
Vitrified Clay 0.013
4. LIFT STATION DESIGN CRITERIA
Sewage lift stations within the City of Renton shall be designed in accordance with good
engineering practice by a professional engineer using the minimum design criteria presented in
Chapter 3 of the "Criteria For Sewerage Works Design," prepared by the Washington State
Department of Ecology, October 1985, or any subsequent updates, and shall conform to the latest
4-17
CHAPTER FOUR
City of Renton standards and specifications. Detailed standards are included in Title 8, Chapter
5 of the City Code, which are presented in Appendix D. Requirements relating to the design are
listed below.
a. DESIGN LOADING FOR LIFT STATIONS
Lift stations shall be designed to handle the peak, wet-weather flow from the contributing
area. All lift stations shall have a minimum of two pump units, each with the capacity
to handle the expected maximum flow.
b. DESIGN PERIOD
The design period for lift stations shall take into consideration long-term needs,
replacement or expansion difficulties, service area growth rate and useful life. A lift •
station should have a minimum design period of twenty years for the facility and ten
years for mechanical and electrical equipment.. Consideration should be given to longer
design periods for lift stations that are expected to serve an indefinite life. Consideration
must also be given to the ability of the consumers to pay for the facilities.
c. DESIGN OF LIFT STATION FACILITIES
Lift stations shall be designed with a minimum of two pumps, both of which have the
capacity to convey peak, wastewater flow rates. If wide variations in wastewater flow
rates are expected into the lift station, then consideration should be given to the use of
three or more pumping units. If three pumps are used, two of them must have the
capacity to convey peak, wastewater flow rates. Each pump shall be capable of passing
spheres of at least 3-inches in diameter.
Each lift station will be provided with either an on-site or portable power backup. A lift
station designed for portable power backup will be provided with sufficient wet-well
storage to allow adequate time for City maintenance personnel to transport, setup, and
provide the necessary backup, during a power outage. Wet-well storage will be designed
on the basis of the peak, wet-weather flow.
Force mains shall be sized to maintain a minimum velocity of 2 feet per second. The
force main shall have a maximum velocity of 10 feet per second when all pumps are
operating together. Regardless of these velocity criteria, minimum size shall be 4-inches
in diameter.
4-18
Land Use Policies/Adjacent Systems/Design Criteria
5. ELIMINATION OF LIFT STATION FACILITIES
Lift station facilities are typically eliminated through the development of the gravity sewer
system. Highest priority should be given to elimination of lift station facilities because of their
high degree of vulnerability and high operation and maintenance costs. These considerations
include environmental risks, life-cycle costs, lift station impacts on downstream sanitary sewer
facilities, vulnerability to vandalism, and lift station accessibility.
4-19
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RH2 ENGINEERING, P.S.
CHAPTER V
SYSTEM ANALYSIS
I ,
CHAPTER V
SYSTEM ANALYSIS & RESULTS
A. INTRODUCTION
This chapter presents a detailed analysis of all aspects of the existing system and their
recommended improvements.. Three system components--the wastewater collection system, lift •
stations and the telemetry and control system--are identified and described and then the results
of either their hydraulic or structural analysis are presented. Other deficiencies that do not apply
to one system component are presented at the end of this chapter.
Many sections of the existing sanitary sewer system have problems which fall into four
categories: deficient capacity, aging pipes, infiltration and inflow, and combined sewers.
Capacity problems in the existing sanitary sewer system have been identified using a hydraulic
computer model. The hydraulic analysis was conducted by entering saturation wastewater flow
rates in a computer model of the existing system to determine if it could adequately convey them.
Capacity problems do occur throughout the system in various degrees and are a result of
inadequate pipe sizes or slopes.
Much of the existing sanitary sewer system was installed during the 1940s and 1950s as a federal
program to provide housing for workers at the Renton Boeing Plant. Many of these sewers have
reached the end of their useful economic life and require replacement. Many of them are in the
North Highlands and South Highlands Subbasins. The City of Renton is currently in the process
of replacing these aging sanitary sewers.
Infiltration and inflow occur in all sanitary sewer systems. Infiltration is defined as water
entering the sanitary sewer system through pipes,joint connections, manhole covers and walls.
Inflow is defined as water discharged to the sanitary sewer system through connections to roof
drains, yard drains, foundation drains, and cross connections with storm sewers and combined
sewers. The combination of both infiltration and inflow can be _a major portion of the total
wastewater flow which must be carried by the sanitary sewer system. Infiltration and inflow
problems in an existing sanitary sewer system can be studied to determine their effect. Many
infiltration and inflow problems can be corrected through grouting of existing pipes and
manholes, replacing damaged pipes, and eliminating illegal connections to the sanitary sewer
system.
Combined sewers are designed to carry both stormwater and wastewater within a single system,
which current design practices in the City of Renton do not allow because it causes stormwater,
which is relatively clean, to be treated along with wastewater. Combined sewer systems within
the City have been replaced with separate sanitary and storm sewer systems,'except for one along
the lakefront in the Kennydale area.
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5-1
CHAPTER FIVE
1. HYDRAULIC ANALYSIS
A hydraulic computer model of the City's sewer system was developed as a part of this plan
update. The purpose of this model was 1) to evaluate the existing sanitary sewer system and
determine areas of capacity constraint,and 2) to provide a tool for planning future improvements.
The hydraulic computer model was created using a software package designed by Specialized
Software Products, Inc., of Tukwila, Washington.
Two basic kinds of data were needed for the computer model:physical data and wastewater flow
data. The physical data of the sanitary sewer system was taken from as-built drawings and other
records provided by the City. Physical data was only available for 60 to 70 percent of the
sanitary sewer system. As a result the unmodelled portion of the sanitary sewer system cannot
be evaluated using this computer model. The physical data entered into the computer model
included manhole numbers, pipe invert elevations at each manhole, and pipe length, diameter,
and material type. Physical data not entered was the age or date of construction of the various
system components.
The wastewater flow rates entered into the computer were based on estimated saturation
conditions because those are the basic criteria around which sanitary sewer facilities are designed.
Domestic wastewater flow rates were determined by land use designations for the entire City.
The wastewater flow rate criteria set for each land use designation is summarized in TABLE IV-
3. The entire sanitary sewer system was first divided into sections and those sections divided
into their land use designations. The total area of each land use designation within each section
was calculated and then used to determine the domestic wastewater flow rate and infiltration and
inflow data. The resulting flow rates and data were then divided equally amongst the sanitary
sewer manholes within that land use designation. Pump flow rates from each of the lift stations
were determined through review of the operations and maintenance manuals, and this flow data
was distributed to the appropriate manholes.
The hydraulic computer model output was developed through a mathematical synthesis of the
physical data and wastewater flow rate information which was entered into the model's data base
for each pipe section. The maximum capacity of each pipe section was determined using the
Manning's equation. A depth to diameter ratio of 0.70 was used to describe the maximum,
desired hydraulic condition within a pipe section. The Manning's co-efficient for the various
pipe materials is listed in TABLE IV-3. The slope used in the Manning's equation was
calculated by the computer model using the invert elevation of the upstream and downstream
manholes.
The expected peak, wet-weather flow rate at saturation was calculated using the various flow
rates entered onto the model data base. A peaking factor of 2.0 was applied to the domestic flow
5-2
I '.
System Analysis and Results
rate entered into each manhole. The peak, domestic flow rates, infiltration and inflow, and lift
station flow rates were then summed downstream through the entire basin. The model output
includes the peak, wet-weather flow rate and maximum velocity for saturation conditions.
The hydraulic analysisof the existing sanitary sewer system involved several steps. First, a
comparison between the peak, wet-weather flow rates and the maximum capacity of each pipe
section was made. A pipe section was determined to be over capacity if the ratio of the peak,
wet-weather flow rate to the maximum flow rate was over 70 percent. This provided a safety
factor which would help account for variations in the Manning's co-efficient and missing data
not entered into the computer data base. The second step identified the pipe sections with
adverse pipe slopes (those pipe sections where the upstream manhole is lower than the
downstream manhole), and the third step identified pipe sections which were constructed within
inadequate slopes to achieve carrying velocity.
This model will be used by the City in the future to evaluate changes to the existing system or
additions to the system during the design phase of each sewer project. However, to increase the
reliability of the model output, it is necessary that the City generate the physical data for the
remaining sewer system that is not currently modeled. In addition, the existing physical data and
wastewater flow data entered in the current model should be checked and verified. Finally, a
model report should be prepared in order to document the information used in developing the
model and to generate'a complete print out of both the input data and the output results.
2. STRUCTURAL ANALYSIS
A structural analysis is a visual inspection of the existing system either by a video camera or
actual inspection during normal operations and maintenance.
The Sanitary Sewer Maintenance Division owns and operates its own sewer video inspection
equipment. At this time, the video equipment is used approximately one clay per week. Video
inspections have been organized and documented since 1988.
The video inspection averages approximately 1500 feet per day. The inspection process requires
hydraulic jet cleaning of the sanitary sewer section prior to the video inspection. After
completion of the video inspection, roots are cut and cracks are sealed,' if necessary, before
proceeding to the next section. The video inspection equipment requires three people to operate.
If traffic control is necessary, two additional people are required. At the current rate, it will take
twelve years to video inspect all existing sanitary sewers. It is recommended that sewers near
the end of their useful life be video inspected every five years. All other sewers should be
inspected every ten years.
5-3
CHAPTER FIVE
Currently, the video tapes taken by. the maintenance crews are stored and cataloged at the City
Shops. However, sanitary sewer video tapes-of new additions are stored in uncataloged boxes
which are then placed in the City's archives. The City should catalog all sanitary sewer video
tapes using a computerized data base and store them in a single location for easy retrieval.
B. SYSTEM-WIDE CONCERNS
1. METRO -INTERCEPTOR SURCHARGE
During peak flows, METRO will use its interceptors for storage of wastewater and for controlling
flows in the Renton Treatment Plant. This results in surcharging of the METRO interceptors.
METRO reserves the right to surcharge its interceptors to an elevation of 22 feet. METRO has
never reached this extreme; however, the City has experienced a sewer surcharge problem in the
low lying areas. The surcharge elevation of 22 feet is shown on the Sanitary Sewer Hydraulic
Profile (FIGURE 2). This hydraulic profile illustrates that the City's sanitary sewers would be
affected by METRO's surcharging, because their inverts are below the 22-foot elevation. As a
result of METRO's surcharging, it is possible that additional wastewater could overflow in low
lying areas through manhole covers and side sewer connections.
The City has not designed facilities to accommodate a sewer surcharge to an elevation of 22 feet.
the City's.current position is that METRO is responsible for providing adequate capacity within
its interceptors and wastewater treatment facilities. In addition, the City considers METRO to
be responsible for proper effluent disposal. During the preparation of the Comprehensive Sewer
Plan, no analysis was made of the effect of METRO's surcharging on the City's sewer system.
METRO should conduct such a study to identify areas of potential risk and alternatives to
mitigate this problem.
2. ADJACENT UTILITY SYSTEMS
For purposes of this plan, all of the comprehensive plans for the adjacent utility systems
described in Chapter 4 were examined. This plan's analysis used their predictions for the future
capacity they will need when they convey wastewater through Renton. However, adjustments
to the City's interceptors may need to be made as these systems further clarify their needs. The
City of Renton has several agreements with adjacent utilities that allow joint use of facilities
within the City. It is important that these adjacent utilities are restricted to the volume of
wastewater discharged to the joint use facilities. If capacity problems become evident, through
visual inspection or flow measurements, then the City and the adjacent utility should work
together to investigate the potential sources, both inside the City and within the adjacent utility
to correct the problem.
5-4
System Analysis and Results
3. STRUCTURAL PROBLEMS
The following is a discussion of specific problems that are associated with the gravity sanitary
sewer system in the City of Renton.
AGING SEWERS
Many of the gravity sewers within the central business district and the Highlands were
constructed in the 1940s as a result of housing construction during the war for the Boeing
plant in Renton. Many of these sewers have reached their design life. expectancy
(approximately 50 years); as these sewers approach the end of their useful life, increased
maintenance and structural inspections should occur to locate and prevent pipe failures.
This comprehensive plan identified some of the older sewers and has established a capital
improvement program to replace and upgrade them. The City should continue this
process.
REVERSE SLOPES AND PIPE SAGS
A major maintenance problem, associated with sanitary sewers that,are laid with a reverse
slope, or have a sag due to improper construction or differential settlement, is that they
require periodic cleaning to remove debris. There are approximately 90 such sewer
sections within the City.
ROOT PROBLEMS
Tree roots cause problems in sanitary sewers by penetrating and cracking sanitary sewer
pipe joints to feed on the wastewater. Tree roots can also create blockages, resulting in
backed-up sewers. The City has approximately 30 sections of pipe which require routine,
root cutting maintenance to prevent wastewater backups and reduce pipe damage.
GREASE PROBLEMS
Grease problems are typically associated with major food processing operations, the
majority of which involve restaurants where grease is a component of the wastewater.
Many of the older restaurants within the City do not have grease traps. Newer
restaurants have been and will continue to require the installation of grease traps;
however, many of these grease traps are not properly maintained because of a lack of
proper monitoring. Grease buildup problems occur most often in the side sewers.
However, some grease buildup problems also occur in the sanitary sewer collection
system. When problems do occur, the City maintenance crews are usually called out to
investigate. The City will need to allocate additional maintenance hours for monitoring
5-5
CHAPTER FIVE
this problem. Ultimately, a proper monitoring program should reduce maintenance time
involved in removing grease buildup.
Preventive maintenance should involve the installation of grease traps in all restaurant and
food processing type facilities and proper maintenance of those grease traps. An
ordinance should be prepared requiring owners of grease traps to write a letter, on an
annual basis, certifying that proper inspection and maintenance have been performed.
Certification should require a small fee to cover administrative costs. Fines should be
imposed for certification fraud of improper inspection and maintenance practices. In
addition, cost of cleanup due to problems associated with improperly maintained grease
traps should be assessed to property owners.
4. EARTHQUAKE PREPAREDNESS
The Seismotectonic Map of the Puget Sound Region (Gower and others, 1985) shows two
significant faults and three small faults less than 10 miles from Renton City Hall. These faults
are zones of weakness in the bedrock that could possibly be the sites of future earthquakes. The
largest fault lies north of Renton; it is inferred on the basis of an abrupt change in relief (an
escarpment)in the bedrock topography of the Puget Lowland. Many small earthquakes (<3.5 on
the Richter Scale) have been detected along this escarpment, especially beneath Seattle and
Mercer Island where the depth to bedrock is deepest. The escarpment has an east-west trend
which is perpendicular to the regional,north-south structural trend of the Puget-Willamette trough
and the Cascade range. Because the basin in the bedrock north of this escarpment is filled with
sediments, it is not expressed at the surface from Winslow to Mercer Island. However, east of
Mercer Island, where it closely parallels I-90, it is marked by the high relief of the Newcastle
Hills, Squak Mountain and Tiger Mountain. The middle to lower Tertiary rocks comprising those
hills, and possibly upper Tertiary sediments (Walsh,personal communication, 1990) are strongly
folded. Despite the seismic record of numerous earthquakes along the escarpment, no rupture
or deformation of the ground surface appears to have occurred during the last 15,000 years.
Another major fault that passes through Renton may begin in Bremerton and extend to Issaquah
or connect with the well defined Hobart fault east-south-east of Renton. This fault is locally well
expressed in lower to middle Tertiary rocks, but it does not deform Vashon glaciation and
younger sediments (<15,000 year old). Furthermore, because historical earthquakes are not
concentrated along its trend,this zone of weakness in the bedrock does not appear to be a hazard.
Similarly, smaller faults west of Renton in Tukwila and through the South Center area, cut only
the bedrock and do not appear to have been active for at least 15,000 years.
Although direct rupture of the ground surface due to a major earthquake originating in the Renton
area is unlikely, ground shaking and failure resulting from a regional magnitude 6.5 to magnitude
5-6
System Analysis and Results
7.5 earthquake is likely during this decade. The recurrence interval for deep earth quakes (>40
km deep) of this magnitude is about 25 years in the Puget Lowland.
Because so many earthquakes have occurred during the 14,000 years since the glacially sculpted
landscape emerged from beneath the melting ice, most features and sediments are adjusted to the
ground motion of magnitude 7 or an even larger event. However, steep slopes that have been
undercut by rivers, man or the .natural weathering and sapping processes of migrating
groundwater, will be susceptible to failure. Particularly likely to fail (liquefy or slump) are areas
of recent fill like the Cedar River delta and man-made deposits of insufficiently compacted
saturated sandy to silty soils.
In general, structures close to bedrock will be less impacted by ground motion than those on
unconsolidated sediments or man-made fill. However, the topography ;of the bedrock surface
beneath Renton will have a major influence on the focusing or attenuation of seismic energy.
Areas overlying old valleys or basins in the bedrock, where fill may be hundreds of feet deep,
may receive up to ten times the shaking that neighboring bedrock hillsides will experience (Ihen
and Hadley, 1986). Thus, facilities designed for the Duwamish valley and Maplewood area will
have to meet higher standards of seismic design.
Water and sewer systems of the Renton area will very likely experience'the significant ground
motion associated with about a magnitude 7 earthquake during the 1990s. Because Renton has
developed both on bedrock and deep fills of unconsolidated sediments, seismic energy will be
locally focused, and very different degrees of ground motion will be experienced by different
parts of the system. Lift stations should be located as close to bedrock as possible, and the
system should be designed to accommodate significant changes in seismic stress over relatively
short distances (tenths of a mile).
C. WASTEWATER COLLECTION BASINS
The following section of this chapter presents an analysis of wastewater collection basins, which
is presented in an order based on the seriousness of each basin's deficiencies. See FIGURE 1
for a location of basins. A brief summary of those deficiencies follows. ,
• The wastewater within the May Creek Basin is currently diverted into the Lake
Washington East Basin causing an overload of that system.' The construction of
the May Valley Interceptor is necessary to correct these problems.
• In the Lower Cedar River Basin,a moratorium on development is in place because
the sewer pipe lines are currently over capacity.
5-7
1
CHAPTER FIVE
• Lake Washington East Basin currently receives wastewater from the Sunset Lift
Station .which significantly contributes to overloading the North Highlands
Interceptor.
• The Panther Creek subbasin in the Black River Basin is at or near capacity; the
Renton Industrial Subbasin is experiencing increasing demands as a result of land
use changes.
• In the Lake Washington West Basin, the West Renton subbasin has sections of
sewer lines that experience some capacity problems.
• The Duwamish Estuary Basin is for the most part undeveloped and is not
experiencing capacity problems at this time.
1. MAY CREEK BASIN
The May Creek Basin is located in the northeast part of the City. Most of this basin is currently
unsewered and is located on the periphery of the City's current service boundary. The May
Creek Basin is jointly served with King County Water District No. 107. The City serves
approximately 910_acres of. this basin which consists of primarily single-family and light
commercial land uses. The ultimate sewerage of the May Creek Basin will be through the
extension and completion of the proposed May Valley Interceptor. At this time, the following
three lift stations serve low lying areas along Lake Washington in this basin: Misty Cove, Baxter
and Denny's Lift Stations.
The City is experiencing development pressure within the May Creek Basin and the Honey Creek
Subbasin,which requires immediate attention be given to the sanitary sewer facilities in this area.
The primary concern is the Devil's Elbow Lift Station. This lift station was designed and
constructed in 1985 to accommodate existing development. In addition, the Devil's Elbow Lift
Station has experienced operation problems and the force main is structurally unreliable due to
soil movement along NE 27th Street.
The City is attempting to accelerate the construction of the May Valley Interceptor with the
assistance of King County Water District No. 107. The May Valley Interceptor would eliminate
the need for the Devil's Elbow and Sunset lift stations. Elimination of these lift stations would
also eliminate many of the capacity problems within the Kennydale and North Renton Subbasins.
However, completion of this interceptor, along with Phase IV of the Honey Creek Interceptor,
is not expected until 1993 at the earliest.
5-8
I
System Analysis and Results
Interim improvements to the Devil's Elbow Lift Station should be (studied. These interim
improvements could be completed in 1991 and would increase the reliability and possibly the
capacity of the Devil's Elbow facilities.
HONEY CREEK SUBBASIN
The May Creek Basin includes the Honey Creek Subbasin, which is currently served by
the Sunset, Summer Wind and Devil's Elbow Lift Stations. These lift stations currently
pump wastewater collected in the Honey Creek Subbasin to the Lake Washington Basin
East. They will be removed from service after completion of the May Valley Interceptor
and the Honey Creek Interceptor.
This is a large subbasin serving approximately 430 acres of the city. The sewage is
routed to Sunset Lift Station where it is pumped to the North Highlands Subbasin. A
serious capacity problem exists in this subbasin within the interceptor along Sunset
Avenue east of Union Avenue._ The sanitary.sewers within the Honey Creek Subbasin
are designed to direct 95 percent of the wastewater toward the Sunset Lift Station. This
results in excessive overloading of this lift Station. On many occasions the Sunset Lift
Station is required to operate both pumps continuously for several days, which is an
"undesirable operating condition. In addition, wastewater discharged from this lift station
adversely impacts gravity sewers in the North Highlands Subbasin. If the sunset lift
station cannot pump all of the incoming flow, the wastewater is automatically discharged
through an overflow device to the Honey Creek Interceptor and is then pumped to the
Kennydale Subbasin through the Devil's Elbow Lift Stations.
During peak storm events, wastewater flow rates have been know to exceed the capacity
of both the Sunset and Devil's Elbow Lift Stations. This has resulted in raw sewage
overflows into Honey Creek. A large potential for development exists within this
subbasin, and the correspondingly higher flows will create more extensive capacity
constraints in the future. A more detailed description of the capacity problems of the
Devil's Elbow Lift Station can be found in the lift station section of this chapter.
As reported in the 1983 Comprehensive Sewer Plan, sanitary sewers within the Honey
Creek Subbasin exhibit substantial amounts of infiltration and inflow, which results in
excessive loading of the Sunset Lift Station and periodic overflows into Honey Creek.
In an attempt to reduce the amount of infiltration and inflow within tliis subbasin, the City
contracted with Gelco Grouting Service to examine and correct infiltration and inflow
problems within this basin. The work was separated into three phases under project Nos.
S-370(1983), S-379(1985), and S-421(1986). In addition, the City also constructed the
Honey Creek Interceptor, which is currently designed to receive the 'wastewater from the
Honey Creek Subbasin that cannot be handled by the Sunset Lift Station.
5-9
CHAPTER FIVE
2. LOWER CEDAR RIVER BASIN
The Lower Cedar River Basin includes the eastern portion of the City of Renton bordering the
Cedar River. The City serves approximately 2610 acres at this basin which consists of primarily
single-family and multi-family developments with some commercial and light industrial land
uses. This basin includes the Central Renton, South Highlands, Maplewood, Heather Downs,
East Maplewood, and Tiffany Park Subbasins.
Due to extensive development and annexation pressures within this basin, an engineering
investigation of the sanitary sewer system in the South Highlands, Maplewood and Heather
Downs Subbasins was performed in the spring of 1989 by RH2 Engineering. The results of this
study are present in a report entitled An Engineering Investigation of Sanitary Sewer Facility
Improvements for the East Renton, Heather Downs, and South Highlands Areas. These results
indicated inadequate sanitary sewer capacity in the South Highlands and Heather Downs
Subbasins, and limited available capacity in the Maplewood Subbasin.
As a result of this engineering investigation,the City Council passed Resolution No. 2764, which
established a moratorium on the connection of new.construction to any of the existing sanitary
sewers in the South Highlands, and Maplewood or Heather Downs Subbasins. The moratorium
will be in effect until January 31, 1992, unless extended by the City Council. The City is
currently working the environmental study and predesign alternatives for the proposed East
Renton Interceptor which would solve the sanitary sewer capacity problem.
CENTRAL RENTON SUBBASIN
The Central Renton Subbasin includes the central business district of the City located
north of the Cedar River and south of North 3rd Street. Many of the sewers in this
subbasin are old and some have experienced structural failure. This area is within Zone
1 of the Aquifer Protection area, and exfiltration from these sewers could contaminate the
City's drinking water supply. This area consists primarily of residential and commercial
land uses.
SOUTH HIGHLANDS SUBBASIN
The South Highlands Subbasin is located south of NE 7th Street and north of NE 4th
Street in the Highlands area. Land use in this subbasin consists primarily of single-family
residential developments.
This is a large subbasin serving approximately 600 acres. It connects into the METRO
Interceptor at North 4th Street and Logan Avenue North. Two lift stations pump into this
basin: Honeydew and Union 600. As a result of development pressures within this
5-10
System Analysis and Results
subbasin, an engineering investigation on the sanitary sewer system was performed in
1990 by RH2 Engineering. The results of this study are presented in a report entitled An
Engineering Investigation of Facility Improvements for the South Highlands Sanitary
Sewer Basin. The major problem identified for this subbasin is an inadequately sized
interceptor, which the report presented options for correcting. The capacity created
through the East Renton project will benefit this basin.
MAPLEWOOD SUBBASIN
The Maplewood Subbasin is located primarily south of NE 4th Street. This area serves
a variety of land uses including single-family and multi-family residential as well as some
commercial and light industrial land uses. This subbasin receives wastewater pumped
from the Union 600 Lift Station. This subbasin connects into the METRO Cedar River
Interceptor along the Maple Valley Highway.
This subbasin has adequate sewer capacity for existing development. However, future
development will require either the construction of additional sewer capacity or the
reduction of existing wastewater flows such as the elimination of the Union 600 Lift
Station.
HEATHER DOWNS SUBBASIN
The Heather Downs Subbasin is located along the eastern border of the city limits. This
subbasin consists primarily of single-family residential development with some multi-
family developments in the northern portion of this subbasin. Several capacity problems
currently exist within this subbasin. The City is currently developing solutions through
the East Renton Interceptor project which would alleviate the sewer capacity problems.
This project is in the predesign and environmental review stage.
In addition to the capacity problems in the Heather Downs Subbasin, a section of the
Heather Downs Interceptor was constructed on a very steep slope, (approximately 65%
slope). The sewer section in question is located along a power line easement near the plat
of Maplewood. The interceptor was constructed using 10-inch PVC sewer pipe with
concrete collars to stabilize the pipe on the steep slope.
No indication of potential structural failure exists. However, a study;should be conducted
to determine the integrity of the sanitary sewer. The City should video inspect this sewer
to examine the internal integrity and to locate any pipe or manhole movement. If a
problem is found, a geotechnical consultant could examine the steep slope for stability
and the potential of soil shifting. This information will help determine the need for
construction of an interceptor in a new alignment.
5-11
CHAPTER FIVE
EAST MAPLEWOOD SUBBASIN
The majority of the East. Maplewood Subbasin is located outside the city limits.
Currently a majority of this basin is unsewered. The small portion that is sewered is
being pumped to the South Highlands Subbasin through the Honeydew Lift Station. With
recent development in this area, the City is currently studying the construction of an
interceptor in this subbasin to serve areas within the City through the East Renton
Interceptor Project.
'I ThFANY PARK SUBBASIN
The Tiffany Park Subbasin is located on the south side of Cedar River. This subbasin
includes primarily single-family and multi-family developments. This subbasin includes
two lift stations: the Falcon Ridge Lift Station and the Cottonwood Lift Station. In
addition, this subbasin receives wastewater from the Soos Creek Water and Sewer
District.
The Tiffany Park Interceptor is a joint use facility between the City of Renton and the
Soos Creek Water and Sewer District (formerly Cascade Sewer District). The gravity
interceptor is currently not experiencing capacity problems, but there is evidence that
peak, wastewater flows exceed the design capacity of METRO's inverted siphon crossing
the Cedar River. METRO is considering replacing the inverted siphon with a new gravity
sewer which would be sized to accommodate these peak flows. This new METRO sewer
would be located on a bridge over the Cedar River that could be used for a proposed trail.
The majority of the wastewater in this interceptor originates in the Soos Creek system,
including Soos Creeks Lift Station No. 5. According to the Soos Creek Comprehensive
Sewer Plan, Lift Station No. 5 is considered to be a permanent facility which serves a
large basin. As development of this basin proceeds, increased pumping from the lift
station will aggravate capacity problems in METRO's inverted siphon and increase the
potential for wastewater release to the Cedar River.
3. LAKE WASHINGTON EAST BASIN
The Lake Washington East Basin is located in the northern part of the City and includes the
Kennydale, North Highlands and North Renton areas of the City. The City serves this entire
basin of 2100 acres which consists of a variety of land uses including single-family and multi-
family residential , light commercial and heavy industrial activities. This basin is divided into
four subbasins which collect wastewater and transport it to METRO's East Side Interceptor.
5-12
A
System Analysis and Results
KENNYDALE LAKEFRONT SUBBASIN
The Kennydale Lakefront is the northernmost subbasin in the Lake Washington East
Basin. This subbasin serves primarily residential communities and includes the Lake
Washington Flush Station and Lake Washington Lift Station No. 2, which serve the
residential community adjacent to Lake Washington (Coleman Point).
This is a medium size subbasin of approximately 110 acres which has almost reached
saturation development. This subbasin connects into the METRO Interceptor at N. 38th
Street and Lake Washington Boulevard.
The Kennydale Lakefront sanitary sewer collection system is a low-pressure, force main.
Water from Lake Washington is pumped periodically into the force main through Lake
Washington flush station. Lake water and the sewage is discharged from this low-
pressure force main into the Lake Washington No. 2 Lift Station, where it is then pumped
into the METRO East Side Interceptor. The original force main was installed in 1960 and
has a history of various problems and requires considerable maintenance. In 1986 the
City attempted to improve the collection system through the installation of additional
cleanouts on the low-pressure force main and the installation of plug valves on each of
the individual side sewers, which could be closed during cleaning operations. This work
was conducted under project No. S-442.
Upon completion of the additions to the force main and side sewers, the City attempted
to clean the low-pressure force main using a sewer pig. Even though the side-sewer plug
valves were closed, two homes were flooded out with backed-up wastewater. Since 1986
no further attempts have been made to thoroughly clean the low-pressure, force main.
Since this part of the sewer system continues to require high maintenance, the City should
continue examining alternatives, that could reduce some of the maintenance and provide
a more reliable and efficient system.
KENNYDALE SUBBASIN
The Kennydale Subbasin serves primarily residential communities including both single-
family and multi-family developments. The eastern portion of this subbasin is mostly
unsewered at this time. The City has received verbal indication from the King County
Health Department of random septic system failures in this area. 'While the extent of
these failures is not known, there is no indication of area or basin-wide problems, but
rather localized problems. This subbasin includes two lift stations: the Highgate Lift
Station and the Azalea Lane Lift Station. In addition, the Devil's Elbow Lift Station
pumps wastewater from the Honey Creek Subbasin to the Kennydale Subbasin.
5-13
CHAPTER FIVE
The basin serves approximately 200 acres of the City of Renton, where there is potential
for future development and hence higher flow rates. This subbasin was modelled as if
the Devil's Elbow and Azalea Lane lift stations were ori-line and were pumping
simultaneously. the subbasin connects into the METRO East Side Interceptor at Lake
Washington Boulevard, south of 28th Street.
NORTH HIGHLAND SUBBASIN
The North Highlands Subbasin serves a large area of both residential and commercial
developments. A major portionof the sanitary sewer system in the North Highlands
Subbasin was constructed during World War II. These older sewer systems are near the
end of their useful life and require increased maintenance. The Sunset Lift Station pumps
sewage from the Honey Creek Subbasin to the North Highlands Subbasin.
The North Highlands Interceptor beginning at NE 7th Street and continuing along Sunset
Boulevard (approximately 7,200 lineal feet) currently exceeds design capacity. This is
primarily a result of receiving wastewater from the Sunset Lift Station. The City's CIP
currently has funds targeted for replacing the interceptor,which will increase the capacity
of the lower portion of this interceptor.
Since wastewater pumped from the Sunset Lift Station is a major factor contributing to
capacity problems in the North Highlands Interceptor, additional efforts should focus on
constructing the May Valley Interceptor which would provide gravity sewer service to the
Honey Creek Subbasin. However,until the May Valley Interceptor is constructed and the
Sunset Lift Station is removed from service, the current configuration provides the best
solution.
NORTH RENTON SUBBASIN
The North Renton Subbasin is located on the south end of Lake Washington between the
Cedar River and Interstate 405. This subbasin consists of commercial and heavy
industrial land uses and includes two lift stations: the Boeing Lift Station and the Lake
Washington Beach Lift Station.
The North Highlands/North Renton Subbasin serves approximately 600 acres in the City
of Renton. Many sections of this basin were not modelled due to a lack of physical data.
Severe capacity problems exist within the interceptor along N 6th Street as a direct result
of receiving wastewater from the Sunset and Boeing Lift Station. The Boeing Lift Station
is planned to be eliminated through the construction of the Park Avenue Interceptor. This
subbasin connects into the METRO Interceptor at N 6th Street and Logan Avenue N.
5-14
1
System Analysis and Results
4. BLACK RIVER BASIN
The Black River Basin is a large drainage basin in the southwest part of the City and includes
the South Renton, Rolling Hills, Talbot Hill, Renton Industrial, Panther Creek,and Springbrook
Subbasins. The higher elevations in the Rolling Hills,Talbot Hill, and Panther Creek areas are
generally single-family and multi-family residential developments, while the valley floor is
generally industrial and commercial land uses. The City serves approximately 3170 acres of this
basin.
SOUTH RENTON SUBBASIN
The South Renton Subbasin includes the commercial business district south of the Cedar
River and the residential communities located on the lower slopes of the Rolling Hills.
Currently no lift stations are located in this subbasin. Most of the sanitary sewers are in
adequate condition and have sufficient capacity for this subbasin; however, older sewers
do exist, but are not known to cause problems at this time. Some sewers will need to be
relocated as a result of construction on I-405. This will be performed by the Washington
State Department of Transportation.
ROLLING HILLS/TALBOT HILL/PANTHER CREEK/SPRINGBROOK SUBBASIN
The Rolling Hills, Talbot Hill, Panther Creek and Springbrook Subbasin serves the
residential communities in the southeast area of the City. This subbasin serves primarily
single-family and multi-family communities. The Talbot Hill Subbasin includes the
Talbot Crest Lift Station. An agreement is currently being negotiated between Soos
Creek Water and Sewer District and the City which will define service area boundaries
and result in joint use of the Springbrook Interceptor which serves the Springbrook
Subbasin.
The Talbot Road Interceptor which serves a majority of the Panther Creek Subbasin is
undersized to service this area. The interceptor should be replaced with larger pipe.
RENTON INDUSTRIAL SUBBASIN
The Renton Industrial Subbasin includes the area south of Interstate 405 and west of the
East Valley Freeway. This area is also called the Orillia Industrial District. This
subbasin includes the Lind Avenue and East Valley Lift Stations. Many areas within the
subbasin are only sparsely developed at this time. This area was originally developed for
light industry and warehousing; however,in recent years the land use has changed rapidly.
Increasingly, warehouse type buildings are being converted to office parks, which places
increased demands on the existing sewer systems. Consequently, the City should
5-15
CHAPTER FIVE
periodically re-examine wastewater flow rates in order to better evaluate sanitary sewer
needs.
5. LAKE WASHINGTON WEST BASIN
The Lake Washington West is located in the northwest part of the City. The basin is bordered
to the east by the Cedar River and to the south by Sunset Boulevard West. The City serves
approximately 710 acres within this basin which consists of primarily single-family and light
commercial land.uses. This basin primarily transports wastewater east into the METRO East
Side Interceptor. This basin is comprised of two subbasins: the West Hill Subbasin and the
West Renton Subbasin. Also included in this basin is a portion of the Bryn Mawr-Lakeridge
Water and Sewer District and Skyway Water and Sewer District.
WEST HILL SUBBASIN
The West Hill Subbasin serves the residential communities on the West Hill north of
Renton Avenue South. The subbasin includes the Airport Lift Station located at the City
of Renton Airport.
This is a large subbasin serving approximately 350 acres. Potential for additional
development within the city limits in this.subbasin is minimal. Some areas were not
modelled in this subbasin due to a lack of physical data. Data which is available is
suspect, due to extensive sewer reconstruction, rehabilitation, and the age of the sewers.
The sewer system which was modelled appears to have sufficient sewer capacity.
WEST RENTON SUBBASIN
The West Renton Subbasin serves residential communities west of Rainier Avenue South
and the commercial district east of Rainier Avenue South. This subbasin includes the
Sears Lift Station and the Earlington School Lift Station.
The West Renton Interceptor located in the West Renton Subbasin is experiencing
capacity problems along Renton Avenue. S. These capacity problems are primarily a
result of undersized sanitary sewers, which are serving a large area. Wastewater flows
from the Sears and Earlington School Lift Stations are also adversely impacting this
interceptor. The existing interceptor is approximately 3,700 lineal feet of 12-inch and 15-
5-16
System Analysis and Results
inch sanitary sewer. The City should examine the possibility of increasing the size of this
interceptor or providing additional interceptors in this basin. Many sewers are also very
old and require replacement, such as the gravity sewers along S,4th Street.
6. DUWAMISH ESTUARY BASIN
The Duwamish Estuary Basin is located in the western portion of the City and includes the
immediate area surrounding METRO's Renton Treatment Facility. This basin also includes a
portion of the Skyway Water and Sewer District. The City serves approximately 580 acres
within this basin which primarily consists of light industrial land uses on the valley floor and
residential developments on the hillsides. There are no sewer capacity problems which have been
identified within this basin.
D. LIFT STATIONS
This plan evaluated lift stations against the standards and guidelines for construction of sewage
lift stations that are detailed in Chapter 3 of the "Criteria for Sewage Works Design" manual
prepared by the Washington State Department of Ecology. This chapter includes design
standards and guidelines for lift station location, pump sizing and selection, wet well sizing
criteria, alarm system, emergency response criteria, force main criteria, lighting and ventilation.
These standards and guidelines have been established to ensure protection of the environment and
property through design and operation of reliable sewage lift stations.
The City of Renton has 23 sewage lift stations, which are shown and inventoried in FIGURE
3. Each station was inspected for safety and accessibility, and operation and maintenance
manuals for each were reviewed at the City Shops. The results of these inspections are presented
in the following paragraphs, and the lift station inventory summaries are presented in TABLE
V-1. Detailed Lift Station Data Sheets are provided in Appendix A.
With few exceptions, these lift stations have no major inadequacies in terms of safety or
reliability. Most of the lift stations have tone-generated telemetry to the City Shops which
activate alarms for high and low wet-well levels, power failure, signal loss and, in some stations,
intrusion alarms.
LIFT STATION NO. 1 - AIRPORT
The Airport Lift Station is located on the east side of West Perimeter Road within the
airport property. This facility is a fiberglass, wet well mounted, duplex lift station with
a duplex vacuum priming system. This facility serves the airport facility along West
5-17
n
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1-1
TABLE V-1: LIFT STATION INVENTORY SUMMARY az
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1 AIRPORT West Perimeter Road 2 4 7.5 3 1750 100 54 WW MTD No Yes 230/460
2 AZALEA LANE 2310 Aberdeen Avenue NE 2 6 7.5 3 1766 150 44 W W.MTD Yes Yes 208
3 BAXTER 5015 Lake Washington Blvd N 2 8 3 3 865 400 23 WW MTD Yes Yes 230/460
Baxter Pole Yard
4 BOEING Park Ave N and N 8th Street 2 6 7.5 3 860 400 30 W W/DW No Yes 230/460
5 COTTONWOOD 2003 Maple Valley Highway 2 6 5 3 1150 300 23 WW MTD No Yes 230/460
West of Riviera Apartments
6 DENNY'S 4750 Lake Washington Blvd N 2 4 5 3 1735 100 35 WW MTD Yes Yes 230/460
7 DEVIL'S ELBOW NE 27th St and 120th Place SW 2 8 40 3 1760 400 157 WW MTD Yes 230/460
8 EARLINGTON SCHOOL 8055 S Langston Road 2 6 5 3 860 150 30 WW/DW No Yes •230/460
tel 9 EAST VALLEY 3400 East Valley Road 2 8 5 3 1150 350 22 WW/DW No Yes 230/460
00 10 FALCON RIDGE 2456 SE 8th Street 2 4 15 3 1800 100 101 WW MTD Yes Yes 230/460
11 HIGHGATE 1824 NE 20th Street 2 4 3 1 1170 100 35 WW MTD Yes Yes 230
12 HONEY CREEK 3501 NB 17th Place 2 4 7.5 1 1750 100 58 WW MTD No Yes 230
13 HONEYDEW Union Ave NE near NE 7th St 2 4 2 3 1160 100 15 SUBMERS. No Yes 230
14 LAKE WASHINGTON BEACH 1101 Lake Washington Blvd N 2 4 3 3 900 125 25 WW/DW No Yes 230/460
Coulon Park Parking Lot
15 LAKE WASHINGTON FLUSH 2727 Mountain View Avenue S 1 8 15 3 1150 400 65 SUBMERS. No Yes 230
North End of Coulon Park
16 LAKE WASHINGTON NO.2 3901 Lake Washington Blvd N 2 6 7.5 3 1150 400 31 WW MTD Yes Yes 230/460
17 LIND AVE. 1801 Lind Avenue S 3 8 5 3 865 780 13 WW/DW Yes Yes 230/460
18 MISTY COVE 5025 Ripley Lane N 2 4 2 3 860 75 10 WW MTD No Yes 230/460
19 SEARS 321 Rainier Avenue S 2 6 5 3 1160 200 30 WW MTD No Yes 230/460
20 SUMMERWIND NE 23rd Street 2 6 25 3 1800 375 133 W W MTD Yes 230/460
21 SUNSET NE Sunset Blvd&Union Ave NE 2 6 15 3 1755 500 70 WW/DW No Yes 230/460
22 TALBOT CREST 2515 Talbot Crest Drive S 2 4 5 3 1750 50 96.6 PE No Yes 230/460
23 UNION 600 NE 5th St and Union Ave NE 2 4 2 3 1750 100 24 WW MTD Yes Yes 230/460
- - - -- -- - - - - -- --
i
I '
it
System Analysis and Results
Perimeter Road. The lift station is in good condition and has proven to be reliable. An
emergency power connection should be installed at this facility.
LIFT STATION NO. 2 - AZALEA LANE
The Azalea Lane Lift Station is located on the east side of Aberdeen Ave NE, south of
NE 24th St. This facility is a fiberglass, wet well mounted, duplex lift station with a
duplex vacuum priming system and serves the communities east of the lift station. The
lift station is in good condition and has proven to be reliable 'although it experiences
periodic flooding. An overflow pipe connects the storm sewer system to the lift station
wet well. As a result, during peak storm events the lift station is required to pump both
wastewater and stormwater.. The City will examine stormwater problems in this area as
part of the Comprehensive Storm and Surface Water Management Plan. One alternative
being considered is to construct a stormwater interceptor to serve this area. This lift
station will be taken off-line and removed when wastewater from,this area is diverted by
gravity through the future East Kennydale Interceptor.
LIFT STATION NO. 3 - BAXTER
The Baxter Lift Station is located in the J.H. Baxter and Co. pole yard near NE 44th
Street adjacent to the railroad tracks. This facility is a recessed, wet well mounted,
duplex lift station with a duplex vacuum priming system. The station serves the mill,
owned by the J.H. Baxter and Company, and the community along the lake north of NE
44th Street. The lift station is in good condition and has proven to be reliable. There is
a creosote smell in the lift station originating from wastewater generated at the mill.
Access to this facility is through the pole yard and is made difficult during rainy periods.
LIFT STATION NO. 4 - BOEING
The Boeing Lift Station is located on the northeast corner of N. 8th Street and Park
Avenue N. This facility is a duplex, wet well/dry well lift station and serves the Boeing
facilities adjacent the lift station. The lift station is in generally good condition but has
poor access and requires a hoist to remove the manhole cover for access. This lift station
will be eliminated by constructing a gravity sewer north along Park Avenue N. to
METRO's East Side Interceptor in conjunction with the reconstruction of this street.
5-19
- %I
CHAPTER FIVE
LIFT STATION NO. 5 - COTTONWOOD
The Cottonwood Lift Station is located west of the Riviera Apartments, south of the
Maple Valley Highway. This facility is a recessed, wet well mounted, duplex lift station.
This facility serves the area between the Maple Valley Highway and the Cedar River,east
of the Stoneway. concrete facilities. The lift station is dangerous and needs to be
replaced. The coatings of the mechanical equipment and dry-well walls are in poor
condition. The wet well has an overflow bypass to the Cedar River. However, during
high,river stages, river water can flow into the wet well. As a result, a valve has been
installed on the bypass and is manually closed by operation and maintenance personnel
during periods of expected, high river levels.
LIFT STATION NO. 6 - DENNY'S
The Denny's Lift Station is located on the east side of Lake Washington Boulevard next
to the Denny's restaurant. This facility is a fiberglass, wet well mounted, duplex lift
station with a duplex vacuum priming system. This facility serves the Denny's restaurant,
is in good condition and has proven to be reliable; however, mechanical equipment needs
to be repainted. The lift station does experience some problems due to grease discharges
from the restaurant and flooding during peak storm events.
LIFT STATION NO. 7 - DEVIL'S ELBOW
The Devil's Elbow Lift Station is located at the unimproved intersection of NE 27th
Street and 120th Place SE adjacent to Honey Creek. This facility is a wet well mounted,
duplex lift station with a duplex vacuum priming system which is housed in a fiberglass
building. The lift station is in fair condition, but is susceptible to vandalism even though
the site has a chain-link fence because of its remote location. pumps have had problems
holding their prime and the mechanical equipment needs to be repainted. A portion of
the force main needs to be replaced due to soil creep along NE 27th Street. This lift
station will be taken off-line and removed when the Honey Creek Interceptor and May
Valley Interceptor are completed.
The Devil's Elbow Lift Station was designed in conjunction with the Honey Creek
Interceptor in 1986. According to the Engineering Report, the lift station was intended
to be an interim facility until the May Valley Interceptor was constructed. The Honey
Creek Interceptor was designed to meet saturation flow conditions from the Honey Creek
Basin. However, according to the Engineering Report,the Devil's Elbow Lift Station was
designed to meet existing conditions and not to provide a log-term solution for this
subbasin.
5-20
System Analysis and Results
Each pump within the Devil's Elbow Lift Station is designed for 450 gallons per minutes.
The Devil's Elbow Lift Station pumps into the Kennydale Subbasin near the intersection
of Edmonds Avenue NE and NE 27th Street. It was determined that wastewater
discharged from this lift station would adversely impact the gravity sewers in the
Kennydale Subbasin. For this reason, all sewers that were adversely impacted were up-
sized in order to handle this additional 450 gallons per minute. In addition a lock-out was
put on the Devil's Elbow Lift Station so that both lift station pumps would not pump
simultaneously.
In recent years, the configuration within the Honey Creek Subbasin has become
increasingly problematic. The Devil's Elbow Lift Station was designed to alleviate
capacity problems which existed in 1986; increased development within this subbasin has
resulted in higher peak wastewater flow rates, causing additional stress to both the Sunset
and Devil's Elbow Lift Stations. During peak storm events, wastewater at the Devil's
Elbow Lift Station has overflowed into Honey Creek.
The pump lock out at Devil's Elbow Lift Station is an additional problem. If a pump
within this facility was signaled to operate, but could not because of a malfunction, the
pump lock-out would prevent the second pump from taking over. The City maintenance
crews can only find out about this problem after the high level alarm at the lift station has
been activated.
Before further developments occurs in this subbasin, a study should be undertaken to
determine alternative to improve system capacity within all of the facilities affected by
this deficiency.
LIFT STATION NO. 8 - EARLINGTON SCHOOL
The Earlington School Lift Station is located on the southwest side of S. Langston Road
between S 132nd Street and S 134th Street. This facility is a duplex wet well/dry well
lift station with an 8-inch overflow bypass. This facility serves the Earlington Elementary
School which is located outside the City limits. The lift station is in good condition, but
has poor access and is difficult to keep clean due to its location on the gravel shoulder.
The lift station will be taken off-line and removed when wastewater from this area is
diverted by gravity through the future Renton Avenue Interceptor.
LIFT STATION NO. 9 - EAST VALLEY
The East Valley Lift Station is located on the northwest corner of the intersection of SW
34th Street and the East Valley Road. This facility is a duplex wet well/dry well
configuration with a single vacuum priming system. This facility serves the commercial
5-21
i
CHAPTER FIVE
areas north and west of the lift station. The lift station is in generally poor condition.
The above-grade electrical enclosures have experienced vandalism, even though the site
is enclosed in a chain-link fence. Lift station walls and mechanical equipment need to
be repainted. The single vacuum priming system does not allow complete redundancy;
this means that the lift station will not operate if there is a failure of the vacuum priming
- system. Since this lift station is considered to be permanent, it is recommended that this
lift station be rehabilitated to make it more reliable.
LIFT STATION NO. 10 - FALCON RIDGE
The Falcon Ridge Lift Station is located at the east end of SE 8th Street in the plat of
Falcon Ridge. This facility is a fiberglass enclosed, wet well mounted, duplex lift station
with a duplex vacuum priming system, which is in good condition and has proven to be
reliable. This lift station will be taken off-line and removed after the development of the
Parker property and completion of the Falcon Ridge Interceptor. Wastewater will then
flow by gravity directly to METRO's Cedar River Interceptor.
LIFT STATION NO. 11 - HIGHGATE
The Highgate Lift Station is located on the south side of NE 20th Street between Jones
Avenue NE and Aberdeen Avenue NE. This facility is a fiberglass enclosed, wet well
mounted, duplex lift station with a duplex vacuum priming system. It serves the
communities along NE 20th Street. This lift station will be taken off-line and removed
when wastewater from this area is diverted by gravity through the future extension of
West Kennydale Interceptor.
LIFT STATION NO. 12 - HONEY CREEK
The Honey Creek Lift Station is located on the south side of NE 17th Place near the
eastern cul-de-sac. This facility is a recessed wet well mounted duplex lift station with
centrifugal pumps. This facility can servethe plat of Honey Creek Park. It is in poor
condition and has been placed on standby since the construction of the Honey Creek
Interceptor. Pump No. 2 is still operational. However, Pump No. 1 is not operational.
The lift station could be placed back into operation, if required.
LIFT STATION NO. 13 - HONEYDEW
The Honeydew Lift Station is located in the middle of Union Avenue NE just north of
NE 7th Street. This facility utilizes two, non-clogging, submersible pumps. This facility
serves the communities north of the Kiwanis Park and Honeydew School along Union
Avenue NE. The lift station is in fair condition. However, because it is located in the
5-22
System Analysis and Results
middle of Union Avenue, traffic control must be set up to access the lift station. The lift
station will be taken off-line and removed when the wastewater from this area is directed
by gravity through future developments to the east. These 'developments, i.e., the
Orchards, should be required to plan for the diversion of wastewater from this lift station
through their property. Honeydew Lift Station cannot be taken off-line until the
completion of the East Renton Interceptor.
LIFT STATION NO. 14 - LAKE WASHINGTON BEACH
The Lake Washington Beach Lift Station is located in the parking lot at Coulon Beach
Park. This facility is a duplex wet well/dry well lift station which serves the restroom
facilities at the park. The lift station is in good condition. The pumps have become
blocked regularly as.a result of hand towels being flushed down the toilets. To eliminate
this problem the Parks Department has installed hand dryers in the restrooms at the park.
LIFT STATION NO. 15 - LAKE WASHINGTON FLUSH
The Lake Washington Flush Lift Station is located at the south end of Mountain View
Avenue North. The facility is a submersible, non-clogging pump for pumping lake water
into the gravity sewer along the Kennydale lakefront for flushing purposes. The low-
pressure sewer then discharges into Lake Washington No. 2 Lift Station. The lift station
is in fair condition and is reliable. This section of sanitary sewer should be studied
separately and alternatives developed,which may eliminate the need for this flush station.
LIFT STATION NO. 16 - LAKE WASHINGTON NO. 2
The Lake Washington No. 2 Lift Station is located at the north end of the Kennydale
Beach Park Road. This facility is a fiberglass enclosed, wet well'mounted, duplex lift
station with a duplex vacuum priming system. This facility serves lakefront properties
west of the railroad tracks in the Kennydale area. The lift station is in poor condition.
The check valve and shut-off valve are located in the wet well and are experiencing
severe corrosion. The ladder in the wet well is dangerous because the supports have
corroded to the point of structural failure. This lift station should be replaced.
LIFT STATION NO. 17 - LIND AVENUE
The Lind Avenue Lift Station is located on the west side of Lind Avenue SW near the
intersection with SW 19th Street. This facility is a triplex, wet well/dry well lift station
which serves the commercial and industrial areas in the vicinity of the lift station. The
lift station was upgraded to a triplex station in 1983 and is in good condition. The above-
5-23
CHAPTER FIVE
grade, motor-control center should be enclosed in a vandal-proof enclosure for security
reasons.
LIFT STATION NO. 18 - MISTY COVE
The Misty Cove Lift Station is located on the west side of Ripley Lane North in the plat
of Misty Cove. this facility is a recessed, wet well mounted, duplex lift station with a
duplex vacuum priming system. This facility serves the lakefront properties west of the
railroad tracks in the May Creek area. The lift station is in good condition. A hoist is
required to remove the manhole cover for access into the lift station. The.Misty Cove
Lift Station pumps to the Baxter Lift Station which has smaller wet well. For this reason
a lockout has been placed on the Misty Cove Lift Station, which is engaged when the
high level alarm at the Baxter Lift Station is activated.
LIFT STATION NO. 19 - SEARS
The Sears Lift Station is located in the parking lot behind Diamond Lil's restaurant in the
Renton Center. This facility is a recessed, wet well mounted, duplex lift station which
serves the commercial areas in the Renton Center. The lift station is in fair condition;
however, the electrical wiring is in poor condition. The bubbler tube is located in the
access port .into the lift station and is easily damaged. Access to the lift station is
congested during business hours. This lift station should be either replaced or
rehabilitated.
LIFT STATION NO. 2 - SUMMER WIND
The Summer Wind Lift Station is located in a fenced, storm-drainage retention area
located off the cul-de-sac on NE 23rd Street. This facility is a fiberglass enclosed, wet
well mounted, duplex lift station with a duplex vacuum priming system. This facility
serves the east half of the plat of Summer Wind. The lift station is in good condition and
has proven to be reliable.
LIFT STATION NO. 21 - SUNSET
The Sunset Lift Station is located on the southeast corner of the intersection of NE Sunset
Boulevard and Union Avenue NE. the facility is a duplex wet well/dry well lift station
with an overflow wet well and an overflow bypass to the Honey Creek Interceptor. This
facility serves the Honey Creek Basin east of Union Avenue NE. The lift station is in
fair condition, but does experience a grease buildup problem in the overflow wet-well
which requires periodic cleaning. Further, the lift station is undersized for the area
served. During storms, both pumps are required to run together. Excess wastewater is
5-24
System Analysis and Results
diverted to the Honey Creek Interceptor. The integrity of the,force main, which was
originally installed in 1963, is questionable. The lift station will be taken off-line and
removed when the Honey Creek Interceptor and May Valley Interceptor are completed.
LIFT STATION NO. 22 - TALBOT CREST
The Talbot Crest Lift Station is located on the west side of Talbot Crest Drive. This
facility is a dual, pneumatic ejector, lift station with an 8-inch overflow bypass. This
facility serves the plat of Talbot Crest. The lift station is in good condition and has
proven to be reliable. The lift station has a tendency to collect condensation in the air
chamber which must be removed periodically. The lift station can be eliminated by
constructing a gravity sewer west across SR 167 or possibly south to the Talbot Road
Interceptor.
LIFT STATION NO. 23 - UNION 600
The Union 600 Lift Station is located on the northeast corner of the intersection of Union
Avenue NE and NE 5th Street. This facility is a fiberglass enclosed, wet well mounted,
duplex lift station with a duplex vacuum priming system. This facility serves the
apartment complexes along NE 5th Street and pumps to the Maplewood Subbasin. The
lift station is in good condition and has proven to be reliable. ;The lift station will be
taken off-line and removed when the gravity sewer is completed to NE 4th Street.
PRIVATE LIFT STATIONS
(- There are also privately owned and maintained lift stations within the City's service area, which
are:
Lift Station Location , Owner
• Pelly Avenue North near North 7th Boeing Company
• Rainier Avenue near NW 6th Airport Utility
• 148th Avenue SE opposite North 10th (Apollo School) King County Water
District No. 90
• East of Kennydale Elementary Private Development
• Puget Drive near Rolling Hills Private Development
• Tukwila Lift Station near METRO plant City of Tukwila
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CHAPTER FIVE
New private lift stations must meet city standards and be required to have a maintenance
agreement with the City. This agreement would allow the city maintenance crews to service
these private lift stations, at the owner's expense, when neglect has resulted in a health hazard.
E. TELEMETRY AND CONTROL SYSTEM
Accurate information that details the flow rates in the collection system and trunk lines is
paramount to successful system operation and planning. Most of the operation issues, and all of
the planning elements, are driven by and based on the flow rates in the pipelines. Without
accurate flow rate information, flow rate assumptions must be made based on population
estimates and industry standard assumptions about per capita sewage contribution, and infiltration
and inflow. The accuracy of an analysis is limited if it is based on assumptions only, rather than
accurate wastewater flow rate data. To illustrate the importance of accurate flow rate, the
following planning and design issues are directly based on flow rates:
• The sizes of the pumps in each lift station are based on maximum flow rates in the
influent sewer mains.
• Collection system, trunk mains, and force mains are based on maximum flow rates from
the contributing areas.
• Lift station wet well volumes are based on expected influent flow rates and projected
emergency reaction times.
• Pump run set points are based on providing maximum pumpcycle times without allowing
the stored sewage to become septic. These are based on influent and pumping flow rates.
• The priority and schedule within which facilities are replaced is based on the flow rate
capacity of the facility compared with the actual flow rate in the system. Facilities which
are operating at or above capacity are replaced first, followed by facilities that are closest
to maximum capacity.
• Actual system flow rates can be compared with the per capita contribution and pipe
material and age to develop relationships between flow rate and population density.
Without these relationships, large safety factors must be added to industry standard ratios ,
for per capita flow rates. These, unnecessarily, increase costs or limit development.
Without these system-specific ratios,it is also impossible to accurately predict overloaded
facilities before the overload shows as surcharged manholes or overflowing wet wells.
5-26
I1
System Analysis and Results
Renton's existing sanitary sewer system operates without accurate flow rate information and
without adequate maintenance management information. The flow rate data used to develop and
calibrate the system-wide computer model was based on industry standards for per-capita flow
and land use designations. Although we believe these values are conservative, it is impossible
to identify to what extent they are above actual system flow rates. Undoubtedly, they are more
conservative in some areas than in others. This lack of real and accurate'data has diminished the
ability to identify all potential problem areas, and to develop the most(efficient and most cost
effective capital improvement program.
To date, the operating staff has reacted to system emergencies as thIey occur, rather than
preventing emergencies through an organized, adequate maintenance schedule. To the credit of
the maintenance staff, they have performed well with the information 'available. It would be
impossible to improve the maintenance program without additional maintenance management and
flow rate information. A properly designed and maintained telemetry and control system includes
the following features:
Alarm Abnormal Events
Provide Engineering Information
Provide Maintenance Information
React to System Emergencies
Reduce Operating Costs
Provide a Convenient Storage Media
Schedule Maintenance Tasks
Improve Safety
Each of these features is discussed in detail below.
ALARM ABNORMAL EVENTS
Although most sanitary sewer telemetry systems include somealarm information, the
following alarms are required for the system to provide the maintenance information
necessary to optimize system operation.
High wet well level
Low wet well level
Pump fail (each pump)
Low pump flow rate
Power fail
Fire alarm
Telemetry fail
Hazardous gas detection
5-27
CHAPTER FIVE
Water in the dry well
Personnel panic alarm
Intrusion alarm
EMERGENCY INFORMATION
Emergency information necessary from the telemetry system must include the influent
flow rate to each lift station. This is a calculated quantity based on the length of time it
takes to fill a known volume in the wet well. The influent flow rate should be reported
as a maximum, minimum, and average value. Pump flow rate is provided by installing < <
an electro-magnetic flowmeter on the discharge side of the pumps. Although doppler
ultra=sonic meters are commonly used for this purpose,their reliability and calibration are
not capable of providing the precise information necessary. Since each pump discharges
through the same flowmeter on alternating cycles, the flow rate difference (difference in
pump output) can be used to alarm a pump that is partially plugged or that has worn
significantly. The alarm features and flow rate capability of the telemetry system can also
be used to identify facilities with a higher than average failure history and to calculate
and optimize pump start and stop set points. Pump set points should be calculated to
maximize the interval between pump starts, while still maintaining adequate storage
reserves in the wet well. These levels should be allowed to automatically change
throughout the day to optimize pump run times. In addition, the telemetry system should
track and store flow rate trends to be used for engineering and planning purposes.
MAINTENANCE INFORMATION
The telemetry system must automatically track and display pump efficiency at each lift
station. This is accomplished by measuring flow rate and electrical current and
calculating the efficiency of each pump cycle.
The maintenance staff uses pump efficiency to identify pumps that are near the end of
their service life and need to be replaced,or pumps that are plugged.or partly plugged and
need service attention. In addition,the system should continuously monitor,calculate and
display the high level response time at each wet well in the system. The response time
continuously varies depending on the influent rate and the volume above the alarm level
in the wet well, and it is useful in determining the sequence of reactions to multiple high
level alarms. During a multiple alarm episode, the staff can respond to the wet well with
the shortest, high level response time. The failure history of each lift station should be
monitored to identify recurring problems or chronic failure sites. This information is then
used to identify frequency of maintenance per site and when facility replacement is due.
5-28
System Analysis and Results
REACT TO SYSTEM EMERGENCIES
The telemetry system should be configured to automatically react to some system
emergencies. For example, lift stations in series should be locked out if a receiving lift
station has a high level alarm. If an overflow is unavoidable, thei station that causes the
least damage should be allowed to overflow first to provide additional reaction time for
maintenance personnel. Low-flow detection should cause the second pump to start,
therefore, providing standby pumping without waiting for a high'level alarm. Multiple
failures or alarms occurring simultaneously can be prioritized by the telemetry system
based on holding capacities and overflow damage potential in order to direct maintenance
personnel to the most critical sites first. An intelligent callout system can direct on-duty
personnel directly to the necessary lift station without the need to go to the central control
panel first,thus,saving emergency response time. An automatic gas detection system can
be used to alert operating personnel of a hazardous condition before they enter the lift
station facility.
REDUCE OPERATING COSTS
Operating costs can be reduced by a properly configured telemetry and control system.
A central display of lift station and collection system operating data can be monitored by
a single person during high system stress conditions to react to problems or emergencies
before they are alarmed. The system can be used to alarm pumps that are operating at
low efficiency, and the pump run times and starts can be ,monitored to identify
components that need repair or replacement. This database can be used with the City's
existing maintenance program to develop failure history at each lift station and to identify
a "mean time between failures" for Renton's system. Efficiency can also be compared
with flow rates and failure histories to develop pump start and stop set points that
optimize pump run times and minimize pump operating costs. The data logging features
of the telemetry system can be used to perform data collection that is currently
accomplished manually, which will allow maintenance personnel to concentrate on
maintenance and operation tasks.
CONVENIENT STORAGE MEDIA
A computer telemetry system provides an efficient media for (storing operating data,
management and engineering data, and maintenance information. In order for the data
to be most useful, it must be time stamped and stored in ASCII text format. This allows
any historical period to be recalled and imported into City standard spreadsheet programs
for manipulation. Data, which is summarized or condensed before it is stored, loses
resolution and the ability to be manipulated to develop engineering and maintenance
-- I
5-29
CHAPTER FIVE
relationships. The storage format should be compatible with the water telemetry system
so that the equipment can be interchanged and one system used as a backup to the other.
SCHEDULE MAINTENANCE TASKS
Any telemetry system should .be compatible with the City's existing maintenance
management system,and the database should be configured to provide real-time operating
information to the maintenance system. Pump maintenance should be based on the total
running time of each pump and the number of starts of each pump. This information is
available through the telemetry system. Each lift station and each pump combination has -
its own characteristic maintenance requirements. Some pumps may require maintenance
every 1,000 hours others every 15,000 hours depending on the service and duty conditions
in. each facility. Real time operating information can provide the maintenance system
with the proper.data to develop the necessary maintenance requirements at each site. This
procedure results in the most efficient use of the maintenance staff's time and reduces
- overall operating costs. In addition, it eliminates the most frequent sources of equipment
failures.
IMPROVE SITE SAFETY
The telemetry system should continuously monitor hazardous gases in the dry well and
alert operatingpersonnel of unsafe conditions. A personnel panic alarm at each site
should be used for added operator safety. A central reporting of the occupied lift stations
allows the maintenance managers to locate and track the maintenance crews for added
safety and reliability. •
1. EXISTING TELEMETRY SYSTEM
The City currently owns and operates an analog, signal-based alarm reporting system,
manufactured by Stead & Baggerly of Bellevue, Washington, which monitors each lift station.
The system includes a master console that is located in the City Shops, and a remote telemetry
transmitter located in each lift station.
The master console is in continuous contact with most lift stations via dedicated telephone wires
and circuits. Telemetry tone transmitters in each lift station report the operating status of the lift
station pumps and alarm events. The following data is telemetered and displayed at the Master
Console:
5-30 ---
System Analysis and Results
Component Status
Pump 1 Run
Pump 2 Run
Wet Well High Level Alarm
Station Power Fail
Alarm conditions are transmitted to on-call maintenance personnel using automatic telephone
dialer.
Although this system has operated reliably, it does not generate the information necessary to
optimize operation of the lift station facilities and the collection system. I The leased telephones
are expensive and are not regularly maintained by the telephone company. The existing system
is noteasy to troubleshoot or repair, and must be maintained by an independent contractor. The
current system does not measure or record flow rate, includes no redundancy, has no data
logging, no maintenance management information, and no control capability.
2. PROPOSED. SYSTEM IMPROVEMENTS
The.Renton Sanitary Sewer System needs a new comprehensive Telemetry and Data Logging
System. The system should be used by the engineering staff to verify or modify the flow rate
assumptions made in this plan and to identify additional improvements necessary. The
maintenance staff will use the system to reduce costs, improve reliability and increase safety.
The new system must be digital, signal-based, using a high security, binary coded decimal for
telemetry transmission. The system should run on IBM compatible computers and use smart
remote telemetry units at the lift stations and collection system monitoring points. Telemetry
should be a combination of leased telephone line and radio transmission, with the radios being
the preferred transmission media. Because the lift stations are often located at the bottom of
drainage basins, radios may not work at all sites. These sites should use leased telephone lines
for data transmission instead of radios.
Control of the facilities should be accomplished in a distributed format, wherein the control
computer provides pump run set points that are based on optimal,pump operating conditions, and
also locks out various lift stations during high-level alarms from various downstream lift stations.
All other control is initiated from the Remote Telemetry Unit, including pump start/stop from the
level transducer, back-up pump control from the float switches and station alarms.
The system should use strain-gauge, level transducers that are suspended in the wet well for
primary pump control, and use float switches for back-up pump control in the event of transducer
failure. Pump discharge flow rates should be measured using an electro-magnetic flowmeter.
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{
CHAPTER FIVE
Influent flow rates do not need to be measured directly, but rather can be mathematically
synthesized by measuring the-time it takes to fill a known volume of the wet well.
The engineering and system status information that is presented at the City Shops should also be
displayed in real time format at City Hall using a networked data logger computer. This will
allow the engineering and planning staff access to system information without disrupting the
maintenance staff.
The computer and data storage system should be compatible with the existing water data logger
to provide redundant data storage and to provide hot standby fail over controllers. . The system
should also be integrated with the existing maintenance management system to provide real time
operating data and failure history data to the maintenance system.
Each remote telemetry unit,located in each lift station, should include intelligent telephone dialer
alarm systems, so that critical alarms can be relayed to on-duty maintenance personnel, even -
during a telemetry system failure. ! ,
Telemetry and control should be provided at each lift station in the system, and at strategically
located, collection system flow-metering points. A pre-design report should be developed in
conjunction with the telemetry system replacement design to identify the number and location
of flow metering stations.
F. WASTEWATER QUALITY
The quality of wastewater transported in the Renton sanitary sewer system varies considerably
depending on the wastewater source, detention time within thesanitary sewer system and the
volume of infiltration and inflow. This chapter discusses several aspects of wastewater quality
and will recommend measures to control or eliminate wastewater quality problems.
1. DOMESTIC WASTEWATER
The quality of domestic wastewater varies and is a direct result of the type of water used within
the home. Some domestic sewage can be considered stronger than others. One household
appliance, the garbage disposal, can greatly impact the quality of wastewater. Most new home
construction incorporates garbage disposal in its design. Use of these garbage disposals increases
both suspended solids and the biochemical oxygen demand (BOD), two common results tested
for when measuring contaminant concentrations. A second major determinant of quality of
wastewater is the volume of infiltration and inflow into the sewer system. High rates of
infiltration and inflow will tend to dilute the contaminant concentration of the wastewater. -
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System Analysis and Results
2. INDUSTRIAL WASTE
Industrial wastes deserve special attention because they can exhibit a wide variety of chemical
constituents. The total volume of industrial waste produced within the_City of Renton is small
compared with the volume of domestic wastewater. However, an industrial or commercial
development can have a considerable impact on the sanitary sewer collection system immediately
downstream of the facility. Industrial waste can contain high concentrations of chemicals which
can make the waste highly corrosive or toxic. A list of the industries located within the City of
Renton is provided in TABLE V-2.
If discharge of an industrial waste to the sanitary sewer system creates problems, then
pretreatment of the industrial waste should be considered. Several federal and state regulations
govern the pretreatment of industrial waste.
Several industries within the City have obtained National Pollution Discharge Elimination
Systems (NPDES) permits as noted in TABLE V-2. The City should,assume that those who
require permits have them and should rely on the Department of Ecology to fulfill its monitoring
responsibilities. According to Department of Ecology records, no violations of NPDES permits
involving sanitary sewer discharges have been reported recently.
5-33
CHAPTER FIVE
TABLE V-2: COMMERCIAL AND INDUSTRIAL WASTEWATER PRODUCERS
INDUSTRIES ADDRESS PERMITS WASTES
Boeing Airplane N 8th and Logan N NPDES Chemicals
Company WA0002992
Dotz Chemical 113 S Tillicum Detergents
Products
Florillo Northwest 100 Blaine Ave. NE Chemicals
Acme Processing, 600 SW 7th Street NPDES High BOD Solids
Inc. WA0023116
J.H. Baxter and 5015 Lake Chemical Solids
Company Washington Blvd. N
Pacific AGRO 903 Houser Way N Chemicals
Corporation •
Service Linen 903 S 4th Street Detergents
Supply High Temperature
Valley General 400 S 43rd Street Medical Wastes
Hospital
3. WASTEWATER QUALITY PROBLEMS
A major problem associated with wastewater quality is the generation of hydrogen sulfide that
occurs during wastewater transport from its source to the point of.treatment. The hydrogen
sulfide found in wastewater results from the anaerobic bacterial reduction of the sulfate ions that
are present. Hydrogen sulfide poses three serious problems: it is highly corrosive, has an
obnoxious odor, and as a gas is toxic to humans and has been known to cause death to sewer
maintenance workers. The production of hydrogen sulfide is directly related to the biochemical
oxygen demand (BOD) of the wastewater. Wastewater exhibiting a high BOD will tend to
generate more hydrogen sulfide than wastewater exhibiting a lower BOD; therefore, excessive
infiltration and inflow will tend to reduce the production of hydrogen sulfide in the wastewater.
Hydrogen sulfide is very corrosive to both sewers and pumping facilities. Hydrogen sulfide
released from the wastewater will tend to dissolve on condensation within the crown of a sanitary
sewer. The hydrogen sulfide retained in the condensation is converted to sulfuric acid through --
oxidation by aerobic bacteria. This sulfuric acid will react with the cement bonding material
within concrete pipes, or iron within steel pipes, and can corrode a pipe to the point of structural
5-34
- I
System Analysis and Results
failure. Sanitary sewer pipes are most susceptible to this type of corrosion in their crowns
because that is where most condensation occurs.
Effects of hydrogen sulfide can be controlled by aeration, periodic cleaning, and use of
noncorrosive pipe materials. If excessive hydrogen sulfide production is evident at a lift station,
aeration of the wet well should be considered to reduce the hydrogen sulfide in the wastewater
and reduce the effects of anaerobic bacteria which produce the hydrogen sulfide. Periodic
cleaning of the sanitary sewers will also remove the biological slime that forms on the pipe walls
and produces .the hydrogen sulfide. The most effective method of mitigating corrosion by
hydrogen sulfide is through the use of noncorrosive pipe materials, such as polyvinyl chloride
(PVC), or high density polyethylene (HDPE). Existing pipes experiencing severe corrosion can
be rehabilitated through the use of various slip form liners or fiberglass resin liners.
In order to control the generation of hydrogen sulfide, the City's maintenance crews routinely
flush and clean sewer pipes with inadequate slopes. In addition, all pipes are cleaned before
video inspection is performed., Both of these tasks reduce biological growth on the walls of the
sewer pipes and reduce the hydrogen sulfide generation potential.
5-35
CHAPTER VI
SYSTEM IMPROVEMENTS
_ J I
CHAPTER VI
CONCLUSIONS AND IMPROVEMENTS
. I
A. INTRODUCTION
This chapter presents the proposed improvements to the Renton sewer sysem that are necessary -
to correct existing deficiencies and accommodate growth. The costs of the improvements and
a schedule for implementing them are also included.
This Capital Improvements Program is designed, along with the entire comprehensive plan, to
be used as a guideline in preparing the capital improvements project list during each yearly
budget process. This plan is deliberately intended to be flexible by allowing incorporation of
necessary changes that might arise. Many of the proposed improvements are considered to be
preventive in nature, i.e., the improvement is intended to happen before la specific facility has
failed, a far more desirable process than trying to replace facilities after j they fail. Since it is
impossible to estimate when a facility will fail, the process of identifying those facilities which
are at risk and planning corrective measures must continue.
' I
B. CIP RANKINGS
The complexity of the City's wastewater utility system requires a method that systematically
determines which improvements should be undertaken sooner than others. To assign rankings
to the planned improvements, each one was analyzed according to these general categories:
Substandard Facility, System Efficiency, Environmental Protection.' Each category was
further divided into four or more kinds of' improvements or standards. Each of these
subcategories was assigned a number of points, with the rule that no one improvement could be
given more than eight points in any of the three categories. For each subcategory,each proposed
project was given one point if it provided the benefit described and two points if it provided a
solution to an acute problem. The higher the number of points an improvement received, the
greater its benefit, or the greater its ability to meet certain standards or policies. This systematic
ranking will help direct resources and activities to the appropriate projects.
1. SUBSTANDARD FACILITY
A facility qualifies as substandard if it is unreliable, is structurally deteriorating or has
hydraulic capacity problems. A project received points if it resulted in the following
improvements to a substandard facility:
POINTS: 1-2 Reduces or eliminates hydraulic capacity problems.
1-2 Replaces a deteriorating facility or corrects a structural problem.
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CHAPTER SIX
1-2 Improves system reliability (i.e., prevents discharge of raw sewage
to any waters, or reduces the potential backup of raw sewage into
basements, streets, or other properties).
1-2 Corrects occupation hazard (i.e., reduce dangers to maintenance
workers).
Maximum Number of Points: 8
2. SYSTEM EFFICIENCY
A project can improve the efficiency of the system if it results in a reduction of operation
and maintenance costs. Examples of such projects include wastewater flow rate modeling
and elimination of lift stations. A project received points for system efficiency if it met
any of the following conditions:
POINTS: 1-2 Involves improving lift station operation or efficiency.
1-2 Involves the elimination of a lift station.
1-2 Reduces infiltration and inflow.
1-2 Improves understanding and planning of sewer system.
Maximum Number of Points: 8
3. ENVIRONMENTAL PROTECTION
An improvement helps protect the environment if it reduces damage to it, or reduces the
threat to the public health. Examples of deficiencies that such projects improve include:
failing septic tanks or sewage overflows into lakes or streams. An improvement received
points for environmental protection if it met any of the following conditions:
POINTS: 1-2 Eliminates septic tanks.
1-2 Improves protection of the public health and safety.
1-2 Improves protection of the environment (i.e., land, wetlands,
streams, groundwater).
2 Helps protect Zone 1 of Aquifer Protection Area.
1 Helps protect Zone 2 of Aquifer Protection Area.
Maximum Number of Points: 8
The results of the systematic ranking are presented in TABLE VI-1. After completion
of the ranking analysis, the projects were sorted and statistically divided into quartiles
(fourths). The first quartile (Quartile I) were those projects with rankings above the 75th
percentile. The second quartile (Quartile II) were those projects with rankings between
the 50th and the 75th percentiles. The third quartile (Quartile III) were those projects
6-2
' I
Conclusions and Improvements _
TABLE VI.1: RANKING SUMMARY OF PROPOSED IMPROVEMENTS
PROJECT PROPOSED CAPITAL IMPROVEMENTS Substandard System Environmental Total QUARTILE
NUMBER Facilities Efficiency Protection Ranking
MAY CREEK BASIN 1
1.1 Devil's Elbow Lift Station Rehabilitation 4 1 1 5 10 I
12 Devil's Elbow Force Main Repair 4 1 15 10 I
1.3 May Valley Interceptor,Section 2 6 " - 2 � 6 14 I
1.4 Honey Creek Interceptor,Phase N 6 2 16 14 I
1.5 Sierra Heights Sewer System Construction 2 1 7 10 I
1.6 Sunset Lift Station Elimination 5 1 4 10 I
1.7 Devil's Elbow Lift Station Elimination 4 1 1 4 9 II
1.8 Misty Cove and Baxter Lift Station Rehabilitation 2 1 1 1 4 N
1.9 Denny's Lift Station Rehabilitation 1 1 1 2 N
LOWER CEDAR RIVER BASIN
2.1 East Renton Interceptor 4 2 1 5 11 I
2.2 Interim Moratorium Area Improvements 4 2 1 5 11 I
2.3 Cottonwood Lift Station Replacement 6 2 1 6 14 I
2.4 Central Renton Sewer Replacement,Phase I(Felly/Garden) 5 2 ' 6 13 I
2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) 5 2 6 13 I
2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) 4 1 1 4 9 II
•
2.7 Highlands Sewer Replacement,Phase III 3 1 ; 3 7 II
2.8 South Highlands Interbasin Transfer 4 13 7 II
2.9 Honeydew Lift Station Elimination 3 1 1 3 7 II
2.10 Union 600 Lift Station Elimination 2 1 1 3 6 III
2.11 Falcon Ridge Lift Station Elimination 2 1 3 6 III
2.12 NE 7th Place Sewer Replacement 2 3 5 N
JAKE WASHINGTON EAST BASIN
3:1 Lake Washington No.2 Lift Station Replacement 5 2 13 10 I
' 3.2 West Kennydale Interceptor 2 1 15 8 II
3.3 Highlands Sewer Replacement,Phases I&II . 5 1 3 9 II
3.4 Highgate Lift Station Elimination 3 1 3 7 II
3.5 East Kennydale Interceptor 2 1 4 7 II
3.6 Azalea Lane Lift Station Elimination 2 2 13 7 II
3.7 Kennydale Lakefront Sewer System Study 3 1 '2 6 III
3.8 Park Avenue Interceptor 3 1 2 6 III
3.9 Boeing Lift Station Elimination 3 1 2 6 III
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) 3 1 12 6 III
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) 3 1 I 2 6 III
Jti,ACKRIVER BASIN 1
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) 4 14 9 II
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) 3 1 3 7 II
4.3 Talbot Crest Lift Station Elimination 3 1 12 6 III
4.4 SW 34th Street Interceptor Replacement 2 1 12 5 N
43 East Valley Lift Station Rehabilitation 2 1 12 5 N
4.6 Lind Avenue Lift Station Rehabilitation 2 1 2 5 IV
4.7 Talbot Road Interceptor Replacement 2 1 2 5 N
LAKE WASHINGTON WEST BASIN
1 5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) 4 1 2 7 II
5.2 Renton Avenue Interceptor 2 1 1 4 N
5.3 Earlington School Lift Station Elimination 3 1 2 6 III
5.4 Sears Lift Station Replacement 2 1 2 5 N
53 Airport Lift Station Rehabilitation 2 2 4 IV -
DUWAMISH ESTUARY BASIN
- 6.1 II Black River Interceptor 1 1 N
,SYSTEM WIDE IMPROVEMENTS 1
7.1 Telemetry and Data Logging System Replacement 3 2 2 7 II
7.2 Infiltration and Inflow Testing and Monitoring Annual
7.3 Existing Sewer Grouting 1 Annual
7.4 Miscellaneous Sewer Replacement I Annual
6-3
1
CHAPTER SIX
with rankings between the 25th and the 50th percentiles. The fourth quartile (Quartile IV)
were those projects with rankings below the 25th percentile.
These project rankings cannot be used solely to prepare the Capital Improvement
Program. The project rankings do not take into consideration engineering judgment or
scheduling of dependent projects. Engineering judgment involves the trained observation
of non-quantifiable impacts of a project. The scheduling of projects involves determining
which projects must be completed before other projects can begin. For these reasons, the
project ranking is best used as one of many tools to establish a Capital Improvement
Program. TABLE VI-2 presents the project priority along with brief comments regarding
any inconsistency between the project quartile and the project priority.
C. CAPITAL IMPROVEMENT DESCRIPTIONS
A list of all the proposed capital improvements, organized by drainage basin, follows. A brief
description of the specific system deficiency and its improvement are included.
System improvements are presented in this chapter in the following order:
• A list of each proposed improvement by basin with a brief description of the
criteria used,the estimated current cost of the improvement, and the recommended
years for construction.
• A summary of improvements by priority (TABLE VI-3).
• A summary of improvements by project type (TABLE VI-4).
• A summary of the estimated project costs and a schedule for implementation.
(TABLE VI-5A & VI-5B).
• A summary of funding sources for each proposed improvement (TABLE VI-6A
& VI-6B)
In addition, the recommended improvements are shown in plan view in FIGURE 8.
6-4
I
'- Con jclusions and Improvements
TABLE VI-2: PROPOSED IMPROVEMENTS PRIORITY SUMMARY BY BASIN
I
PROJECT PROPOSED CAPITAL IMPROVEMENTS QUARTILE PRIORITY I COMMENTS
NUMBER
MAY CREEK BASIN j
1.1 Devil's Elbow Lift Station Rehabilitation I A
1.2 Devil's Elbow Force Main Repair I A
1.3 May Valley Interceptor,Section 2 I A
1.4 Honey Creek Interceptor,Phase IV I B Dependent on Project 1.3
1.5 Sierra Heights Sewer System Construction I B Dependctt on Projects 1.1 and 1.2
1.6 Sunset Lift Station Elimination I D Dependent on Projects 1.3 and 1.4
1.7 Devil's Elbow Lift Station Elimination U D Dependent on Projects 1.3 and 1.4
1.8 Misty Cove and Baxter Lift Station Rehabilitation N F
1.9 Denny's Lift Station Rehabilitation IV F
LOWER CEDAR RIVER BASIN
2.1 East Renton Interceptor I A
2.2 Interim Moratorium Area Improvements I A
2.3 Cottonwood Lift Station Replacement I A
2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) I A
2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) I C Dependent on•Project 2.4
2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) II E Dependent on Projects 2.4 and 2.5
2.7 Highlands Sewer Replacement,Phase III II B
2.8 South Highlands Interbasin Transfer II B
2.9 Honeydew Lift Station Elimination II C Dependent on proposed development
2.10 Union 600 Lift Station Elimination III F Dependent on Project 2.1
2.11 Falcon Ridge Lift Station Elimination III F Dependent on proposed development
2.12 NE 7th Place Sewer Replacement N F
JAKE WASHINGTON FAST BASIN
3.1 Lake Washington No.2 Lift Station Replacement I A j
3.2 West Kennydale Interceptor II A Projectinlprogress
3.3 Highlands Sewer Replacement,Phases I&II II B
3.4 Highgate Lift Station Elimination II B Dependent on proposed development
3.5 East Kennydale Interceptor II C Dependent on other City improvements
3.6 Azalea Lane Lift Station Elimination II D Dependent on Project 3.5
3.7 Kennydale Lakefront Sewer System Study III C
3.8 Park Avenue Interceptor III C
3.9 Boeing Lift Station Elimination III E Dependent on Project 3.8
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) III E
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) in F I
BLACK RIVER BASIN
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) II A Performed during I-405 work
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) U B
4.3 Talbot Crest Lift Station Elimination III C
4.4 SW 34th Street Interceptor Replacement IV D j
4.5 East Valley Lift Station Rehabilitation N D
4.6 Lind Avenue Lift Station Rehabilitation N E
4.7 Talbot Road Interceptor Replacement IV E
JAKE WASHINGTON WEST BASIN
5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) II B
5.2 Renton Avenue Interceptor IV F I
' 5.3 Earlington School Lift Station Elimination III F DependentlI n Project 5.2
5.4 Sears Lift Station Replacement N F
SS Airport Lift Station Rehabilitation N F
J)UWAMISH ESTUARY BASIN
6.1 I Black River Interceptor N F j
,SYSTEM WIDE IMPROVEMENTS 1
7.1 Telemetry and Data Logging System Replacement II B j
7.2 Infiltration and Inflow Testing and Monitoring Annual
7.3 Existing Sewer Grouting Annual
7.4 Miscellaneous Sewer Replacement Annual
I
6-5
1
1
1
I
CHAPTER SIX
1. MAY CREEK BASIN
Devil's Elbow Lift Station Rehabilitation
System Deficiency: Construction of the Devil's Elbow Lift Station was completed in
1986. However, significant mechanical difficulties have made the lift station unreliable.
In addition, excessive vandalism has occurred due to the lift station's remote location.
During peak, wet-weather flows,the Devil's Elbow lift station has overflowed into Honey
Creek. The lift station operation must be made more reliable and the facility must be
made more resistant to vandalism.
Improvement: Correct mechanical problems with lift station in order to meet current
design standards.
CIP Project No. 1.1 Cost: $167,000 Priority A
Beginning: 1991 Completion: 1991
Devil's Elbow Force Main Repair
System Deficiency: Northeast 27th Street has been closed to automobile traffic due to
the unstable side slopes of the Honey Creek ravine. The force main for the Devil's
Elbow Lift Station, which is located on NE 27th Street has the potential of structural
failure if the side slopes supporting the roadway were to deteriorate further.
Reconstruction of several sections of the force main is required to increase its reliability.
Improvement: Correct instability problems with force main to ensure reliability.
CIP Project No. 1.2 Cost: $75,000 Priority A
Beginning: 1991 Completion: 1991
6-6
Conclusions and Improvements
Mav Valley Interceptor, Section 2
System Deficiency: The May Valley Interceptor is a facility that is proposed to be
constructed by METRO to serve the sewerage needs of this basin) Section 1 of the May
Valley Interceptor has been constructed from METRO's East Side Interceptor under
Interstate 405 to Jones Avenue NE. Section 2 would extend south along Jones Avenue
NE which parallels May Creek to Honey Creek. At this timie METRO intends to
construct Section 2 of the May Valley Interceptor. However, the;City may need to take
the initiative to construct the May Valley Interceptor, Section 2,,if METROs schedule
does not coincide with the City's needs. Construction of Section 2 of the May Valley
Interceptor is necessary to complete the Honey Creek Interceptor and eliminate the need
for the Sunset and Devil's Elbow Lift Stations. The May Valley Interceptor, Section 2,
would require approximately 5,400 lineal feet of 24-inch gravity sewer.
Improvement: Construct gravity sewer service in the May Creek Basin to Honey Creek
CIP Project No. 1.3 Cost: $1,448,000 Priority A
Beginning: 1991 Completion: 1993
Honey Creek Interceptor, Phase N
System Deficiency: Phases I through III of the Honey Creek Interceptor were completed
in 1986. However,frequent mechanical problems with the Devil's Elbow Lift Station and
structural problems with the Devil's Elbow force main require that a long-term solution
be developed for this basin. The solution is the completion lof the Honey Creek
Interceptor,Phase N,which would provide a gravity interceptor from the existing Devil's
Elbow Lift Station down to the mouth of the Honey Creek. In (conjunction with this
project, the May Valley Interceptor, Section 2, must be completed. Honey Creek
Interceptor, Phase IV, would require approximately 2,700 lineal feet of 12-inch gravity
sewer.
Improvement: Complete construction of the Honey Creek Interceptor in order to
eliminate the Devil's Elbow and Sunset Lift Stations.
CIP Project No. 1.4 Cost: $945,000 Priority B
Beginning: 1992 Completion: 1993
6-7
CHAPTER SIX
Sierra Heights Sewer System Construction
System Deficiency: The Sierra Heights area includes residential developments located
both inside and outside the City limits. Increased septic system failures have prompted
the King County Health Department and the City of Renton to examine providing sanitary
sewer service to this residential area. Wastewater from this area would discharge into the
Honey Creek Interceptor. This project should not be completed until improvements are
made to the Devil's Elbow Lift Station and force main. The Sierra Heights sewer system
would require approximately 8100 lineal feet of 12-inch and 8-inch gravity sewer.
Improvement: Construct sanitary sewers to replace failing septic systems.
CIP Project No. 1.5 Cost: $1,920,000 Priority B
Beginning: 1992 Completion: 1994
Sunset Lift Station Elimination
System Deficiency: After completion of Section 2 of the May Valley Interceptor and
Phase IV of the Honey Creek Interceptor, the Sunset Lift Station can be placed on
standby.
Improvement: Place lift station on standby after completion of the Honey Creek
Interceptor.
CIP Project No. 1.6 Cost: $50,000 Priority D
Beginning: 1994 Completion: 1995
Devil's Elbow Lift Station Elimination
System Deficiency: After completion of Section 2 of the May Valley Interceptor and
Phase IV of the Honey Creek Interceptor, the Devil's Elbow Lift Station can be
eliminated. This would require full dismantling of the existing lift station facilities. The
existing force main will remain in place.
Improvement: Disassemble and remove existing lift station after completion of Honey
Creek Interceptor.
CIP Project No. 1.7 Cost: $50,000 Priority D
Beginning: 1994 Completion: 1995
6-8
� I
Conclusions and Improvements
Misty Cove and Baxter Lift Station Rehabilitation
• I
System Deficiency: Misty Cove Lift Station currently pumps into the Baxter Lift Station
which pumps into the METRO.Sewer. It may be possible to eliminate one of these lift
stations by providing gravity sewer from the Baxter Lift Station to Misty Cove. The
Misty Cove Lift Station has sufficient wet well volume to accommodate this change.
Improvement: Improve operation, safety, and reliability of these lift stations.
CIP Project No. 1.8 Cost: $450,000 Priority F.
Beginning: 1996 Completion: 1998
Denny's Lift Station Rehabilitation
System Deficiency: The Denny's Lift Station experiences problems including excessive
grease buildup in the wet well and periodic flooding during intense'storms. Rehabilitation
of the station should be done to provide greater protection and increased reliability.
1
Improvement: Improve operation, safety, and reliability of this lift station.
CIP Project No. 1.9 Cost: $70,000 'Priority F
Beginning: 1996 Completion: 1996
2. LOWER CEDAR RIVER BASIN
East Renton Interceptor
System Deficiency: The East Renton Interceptor is currently in the planning stages. Its
purpose is to eliminate capacity problems within the existing sanitary sewer systems in
the South Highland, Maplewood and Heather Downs subbasins. The planning and
construction of this interceptor is in direct response to an enactment of a Sanitary Sewer
Moratorium by the City Council under Resolution No. 2764. Upon completion of the
preliminary design and environmental impact statement, a preferred alignment will be
selected for final design and construction. The selected interceptor alternative could
require as much as 12,300 lineal feet of gravity sewer and possibly the construction of
a major sewage lift station.
Improvement: Resolve capacity limitations in the South Highlands, Maplewood and
Heather Downs subbasins by building the East Renton Interceptor;
CIP Project No. 2.1 Cost: $4,445,000 Priority A
Beginning: 1989 Completion: 1992
6-9
CHAPTER SIX
Interim Moratorium Area Improvements
System Deficiency: Capacity problems exist in the South Highlands, Maplewood and
Heather Downs Subbasins. Asa result of the Sanitary Sewer Moratorium in those areas,
the City Council directed the Public Works Department to investigate potential areas for
interim improvements that could alleviate existing capacity problems within these
subbasins. The City is currently investigating several interim improvements.
Improvement: Investigate interim improvements as a means of alleviating of existing
capacity problems in the South Highlands, Maplewood and Heather Downs.Subbasins.
CIP Project No. 2.2 Cost: $332,000 Priority A
Beginning: 1990 Completion: 1991
Cottonwood Lift Station Replacement
System Deficiency: The Cottonwood Lift Station is in poor condition,is a contamination
threat to the City's aquifer and does not meet current design standards, which include an
overflow bypass of the Cedar River. Since this lift station is located within Zone No. 1
of the Aquifer Protection Area, overflows from this station could contaminate
groundwater. Since this lift station is considered to be permanent, it should be replaced
with a more reliable facility.
Improvement: Replace lift station with a more reliable one.
CIP Project No. 2.3 Cost: $272,000 Priority A
Beginning: 1990 Completion: 1991
Central Renton Sewer Replacement, Phase I (Pelle/Garden)
System Deficiency: These existing sewers are old and were constructed with inadequate
slopes which do not allow self-flushing of the sewer lines. Consequently, maintenance
crews are required to flush these sewer lines approximately once a month. These sewers
also pose a threat to the City's drinking water supply, due to its location within Zone 1
of the Aquifer Protection Area. This project involves the replacement of approximately
3800 lineal feet of existing 8-inch gravity sewer between Pelly Avenue N,Garden Avenue
N, N 4th Street, and N 1st Street.
Improvement: Replace old sewers to reduce the threat of aquifer contamination and to
reduce excessive maintenance.
CIP Project No. 2.4 Cost: $270,000 Priority A
Beginning: 1991 Completion: 1992
6-10
1
Cor}clusions and Improvements
Central Renton Sewer Replacement, Phase II (Williams/Pelly)
System Deficiency: These existing sewers are old and were constructed with inadequate
slopes which do not allow self flushing of the sewer lines. Consequently, they require
excessive maintenance; crews are required to flush them approximately once a month.
These sewers also pose a threat to the City's drinking water supply, due to its location
within Zone 1 of the Aquifer Protection Area. This project involves the replacement of
approximately 3400 lineal feet of existing 8-inch gravity sewer between Williams Avenue
N, Pelly Avenue N, N 4th Street, and N 1st Street.
Improvement: Replace old sewers to reduce the threat of aquifelr contamination and to
reduce excessive maintenance
CIP Project No. 2.5 Cost: $200,000 Priority C
Beginning: 1993 Completion: 1994
Central Renton Sewer Replacement, Phase III (Houser/Factory) I
System Deficiency: These existing sewers are old and are located within the Zone No.
1 of the Aquifer Protection Area, thus posing a threat to the City's'drinking water supply.
This project involves the replacement of approximately 3200 lineal feet of existing 8-inch
gravity sewer between Factory Avenue N, Houser Way N, and /414th Street.
Improvement: Replace existing sewers to reduce the threat of aquifer contamination.
CIP Project No. 2.6 Cost: $200,000 Priority E
Beginning: 1995 Completion: 1996
Highlands Sewer Replacement, Phase III
System Deficiency: Older sewers will not accommodate future wastewater flows within
this subbasin. This project involves the replacement of approximately 500 lineal feet of
existing 8-inch gravity sewer along Edmonds Avenue NE between NE 5th and NE 6th
Streets. This project is to be done in conjunction with the overlay of Edmonds Avenue.
The new gravity sewer should be 12-inch in order to accommodate future wastewater
flows.
Improvement: Replace old sewers during street improvement project.
CIP Project No. 2.7 Cost: $51,000 Priority B
Beginning: 1992 Completion: 1993
6-11
CHAPTER SIX
South Highlands Interbasin Transfer
System Deficiency: Capacity problems exist within the South Highlands Basin and could
be alleviated with the replacement and up-sizing of existing sanitary sewers as well as the
construction of additional sanitary sewers. These improvements were identified by RH2
Engineering, P.S., in April 1990 during their investigation of facility improvements for
the South Highlands Sanitary Sewer Basin.
Improvement: Replace and up-size existing sewer and construct new sewers to
optimize existing sewers in this area.
CIP Project No. 2.8 Cost: $300,000 Priority B
Beginning: 1990 Completion: 1991 -
Honeydew Lift Station Elimination
System Deficiency: The Honeydew Lift Station can be eliminated through the
construction of a gravity interceptor along private property. The sanitary sewer would
require approximately 2600 lineal feet of 8-inch and 12-inch gravity sewer. The
Honeydew Lift Station should be eliminated and the gravity sewer constructed during the
development of these parcels.
Improvement: Disassemble and remove lift station after gravity sewer is provided to
this area.
CIP Project No. 2.9 Cost: $570,000 Priority C
Beginning: 1993 Completion: 1995
Union 600 Lift Station Elimination
System Deficiency: The Union 600 Lift Station can be eliminated through the
construction of a gravity sewer to NE 4th Street. A portion of this gravity sewer has
already been constructed and the remaining section would require approximately 1000
lineal feet of 8-inch gravity sewer. This project should not be completed until the
completion the East Renton Interceptor, which will free up capacity within the Heather
Downs subbasin.
Improvement: Disassemble and remove lift station after completion of gravity sewers
in this area.
CIP Project No. 2.10 Cost: $180,000 Priority F
Beginning: 1996 Completion: 1997
6-12
Conclusions and Improvements .,
Falcon Ridge Lift Station Elimination
System Deficiency: This project involves the construction of approximately 2000 lineal
feet of 8-inch and 12-inch gravity sewer from the existing lift station to METRO's Cedar
River Interceptor. This project will be done in conjunction with the development of the
property between the lift station and the Cedar River.
Improvement: Disassemble and remove lift station after completion of gravity sewers
in this area.
CIP Project No. 2.11 Cost: $700,000 Priority F
Beginning: 1996 Completion: 2000
NE 7th Place Sewer Replacement
System Deficiency: These existing sewers are currently experiencing wastewater flows
that exceed their design capacity. This project involves replacing and up-sizing
approximately 840 lineal feet of existing 8-inch gravity sewer to 12;inch sewer pipe. This
project may not be necessary if the Honeydew Lift Station is eliminated in the near
future. An alternative is to construct a bypass sewer along NE 6th Street as
recommended in the RH2 Engineering, P.S., investigation of the South Highlands Basin.
Improvement: Replace existing sewer to eliminate existing capacity acitYproblems.
CIP Project No. 2.12 Cost: $110,000 Priority F
Beginning: 1996 Completion: 1997
South Highlands Sewer Collection System Replacement
System Deficiency: The existing collection system within the South Highland subbasin
was constructed in the early 1940s and is comprised of 8-inch concrete sewers which are
approaching the end of their useful life and need to be replaced before structural failures
occur. This project involves the replacement of approximately j 34,000 lineal feet of
existing gravity sewer.
Improvement: Replace existing collection system between NE 3rd Street, NE 7th Street,
Monroe Avenue NE, and Sunset Avenue NE.
CIP Number: 2.13 Cost: $6,800,000 Priority: G
Beginning: 2001 Completion: 2005
6-13
CHAPTER SIX
3. LAKE WASHINGTON EAST BASIN
Lake Washington No. 2 Lift Station Replacement
System Deficiency: The lift station, a wet well, mounted duplex, is in poor condition,
does not meet current standards, and is dangerous to maintain. The check valve and shut-
off valve are located in the wet well and are experiencing severe corrosion. In addition,
the ladder in the wet well is dangerous because its supports have corroded to the point
of structural failure.
Improvement: Replace lift station.
CIP Project No. 3.1 Cost: $250,000 Priority A
Beginning: 1991 Completion: 1992
West Kennydale Interceptor
System Deficiency: The West Kennydale Interceptor is currently under construction and
is expected to be completed in 1991. This interceptor can potentially serve a large
portion of the Kennydale subbasin. The West Kennydale Interceptor is approximately
1750 lineal of 8-inch gravity sewer.
Improvement: Provide gravity sewer service to a currently unsewered area.
CIP Project No. 3.2 Cost: $ 420,500 Priority A
Beginning: 1989 Completion: 1991
Highlands Sewer Replacement, Phases I & II
System Deficiency: Concrete sewers have deteriorated to the point of requiring
replacement of them by a new sewer interceptor along Aberdeen Avenue NE, NE 9th
Street, and Harrington Avenue NE between NE 7th Street and NE Sunset Boulevard.
Total sewer construction is approximately 3,500 lineal feet of 12-inch and 15-inch of
gravity sewer. This project is located in Zone 2 of the Aquifer Protection Area.
Improvement: Construct sewer interceptor.
CIP Project No. 3.3 Cost: $460,000 Priority B
Beginning: 1992 Completion: 1991
6-14
Conclusions and Improvements
Highgate Lift Station Elimination
System Deficiency: After completion of the West Kennydale Interceptor, the Highgate
Lift Station can be eliminated with the construction of approximately 1000 lineal feet of
12-inch gravity sewer. The construction of this gravity sewer will require easements
across private property to the north of this lift station.
Improvement: Disassemble and remove existing lift station through the construction of
a gravity collection sewer.
CIP Project No. 3.4 Cost: $225,000 Priority B
Beginning: 1992 Completion: 1993
East Kennydale Interceptor
System Deficiency: Currently, the Kennydale Subbasin is currently unsewered or is
served by the Azalea Lane Lift Station. The East Kennydale Interceptor would serve a
major portion of the subbasin. The construction of this interceptor would also allow the
elimination of the Azalea Lane Lift Station. The East Kennydale Interceptor would
require approximately 4350 lineal feet of 12-inch and 8-inch gravity sewer.
Improvement: Provide gravity sewer service through construction of a new
interceptor.
CIP Project No. 3.5 Cost: $750,000 Priority C
Beginning: 1993 Completion: 1995
Azalea Lane Lift Station Elimination
System Deficiency: The Azalea Lane Lift Station currently serve the communities east
of Aberdeen Avenue NE and experiences periodic flooding during storm conditions
because of its location. The lift station could be eliminated after the completion of the
East Kennydale Interceptor. The lift station would be fully dismantled, but the force main
would remain in place.
Improvement: Disassemble and remove existing lift station after completion of East
Kennydale Interceptor.
CIP Project No. 3.6 Cost: $50,000 Priority D
Beginning: 1994 Completion: 1995
6-15
CHAPTER SIX
Kennydale Lakefront Sewer System Study
•
System Deficiency: The Kennydale Lakefront sewer system has several undesirable
operating characteristics: first, this low-pressure sewer main requires a considerable
amount of maintenance which is made more difficult due to its location along the
lakefront. Second, it uses a flush station which pumps water from Lake Washington in
order toflush wastewater to the Lake Washington No. 2 Lift Station. Third, the sewer
system poses a tremendous environmental threat to both the environment and the property
owners adjacent to this system. This study would examine and evaluate alternatives to
improve the operation of this sewer system.
Improvement: Examine and evaluate alternatives for improving system operation in this
area.
CIP Project No. 3.7 Cost: $50,000 Priority C
Beginning: 1993 Completion: 1994
Park Avenue Interceptor
System Deficiency: Currently, gravity sewer service is unavailable to Boeing Facilities.
The Boeing Lift Station could be eliminated by building a new interceptor. The Park
Avenue Interceptor would run north along Park Avenue N from the intersection with N
8th Street to METRO's East Side Interceptor. This interceptor construction is to be done
in conjunction with the resurfacing of Park Avenue N. The Park Avenue Interceptor
would require approximately 2000 lineal feet of 12-inch gravity sewer.
Improvement: Provide gravity sewer service through construction of a new interceptor.
CIP Project No. 3.8 Cost: $500,000 Priority C
Beginning: 1993 Completion: 1994
Boeing Lift Station Elimination
System Deficiency: The Boeing Lift Station currently serves the industrial properties
owned by the Boeing Airplane Company. The construction of the Park Avenue
Interceptor would allow the elimination of the lift station by providing gravity sanitary
sewer service to these industrial facilities. The lift station would be fully dismantled, but
the force main would remain in place.
Improvement: Eliminate Boeing Lift Station.
CIP Project No. 3.9 Cost: $50,000 Priority E
Beginning: 1996 Completion: 1997
6-16
Conclusions and Improvements
North Renton Sewer Replacement, Phase I (Wells/Park)
System Deficiency: The existing gravity sewers are old, ;deteriorating and were
constructed with an inadequate slope which does not allow self-flushing of the sewer
lines. Consequently, maintenance crews are required to flush these sewer lines
approximately once a month. In addition, their condition has deteriorated and requires
replacements.
Improvement: The replacement of approximately 2400 lineal feet of existing 8-inch
gravity sewer between N 6th Street, N 4th Street, Wells Avenue N, and Logan Avenue
N.
CIP Project No. 3.10 Cost: $250,000 Priority E
Beginning: 1995 Completion: 1996
North Renton Sewer Replacement, Phase II (Logan/Wells)
System Deficiency: The existing sewers are old and deteriorating and were constructed
with an inadequate slope which does not allow self-flushing of the sewer lines.
Consequently, excessive maintenance is required; consequently maintenance crews flush
these sewer lines approximately once a month.
Improvement: The replacement of approximately 2600 lineal feet of existing 8-inch
gravity sewer between N 6th Street,N 4th Street,Wells Avenue N and Logan Avenue N.
CIP Project No. 3.11 Cost: $300,000 Priority F
Beginning: 1996 Completion: 1997
North Highlands Sewer Collection System Replacement
System Deficiency: The existing collection system within the North Highlands subbasin
was constructed in the early 1940s and is comprised of existing 8-inch concrete sewers,
which are approaching the end of their useful life and need'to be replaced before
structural failure occurs. This project involves the replacement of approximately 29,000
lineal feet of existing gravity sewer.
Improvement: Replace existing collection system between NE 7th Street, NE Sunset
Boulevard, and Monroe Avenue NE.
CIP Number: 3.12 Cost: $5,800,000 ! Priority: G
Beginning: 2001 Completion: 2005
6-17
CHAPTER SIX
4. BLACK RIVER BASIN
Renton CBD Sewer Replacement, Phase I (Mill Avenue)
System Deficiency: This project involves the replacement of approximately 1600 lineal
feet of 8-inch and 12-inch older gravity sewer along Mill Avenue S between S 5th Street
and S 2nd Street. This project is to be done in conjunction with the reconstruction of
Interstate 405.
Improvement: Replace old sewers during I-405 construction.
CIP Project No. 4.1 Cost: $121,000 Priority A
Beginning: 1990 Completion: 1991
Renton CBD Sewer Replacement, Phase II (Logan and Williams Ave.)
System Deficiency: The existing sewers, located on Logan Avenue S and Williams.
Avenue S, are old and have deteriorated beyond repair. Sewer replacements would
improve sanitary sewer service to these residential areas.
Improvement: Replacement of approximately 2000 lineal feet of existing 8-inch
gravity sewer which will improve residential sanitary sewer service.
CIP Project No. 4.2 Cost: $260,000 Priority B
Beginning: 1992Completion: 1993
Talbot Crest Lift Station Elimination
System Deficiency: The Talbot Crest Lift Station, which serves a residential
development along Talbot Crest Drive,does not meet current design standards. Currently,
the emergency overflow for this lift station discharges into the Panther Creek Wetlands
area.
Improvement: This lift station can be eliminated through the construction of a
approximately 1200 lineal feet of 8-inch gravity sewer from the lift station under the East
Valley Freeway to the East Valley Road.
CIP Project No. 4.3 Cost: $350,000 Priority C
Beginning: 1993 Completion: 1995
6-18
Conclusions and Improvements
SW 34th Street Interceptor Replacement
System Deficiency: This project involves the replacement of approximately 1500 lineal
feet of existing 8-inch gravity sewer. These existing sewers were undersized to
accommodate.the area which can be potentially served with this interceptor. The new
interceptor would be 12-inch.
Improvement: Replace existing sewers which are undersized to serve this area.
CIP Project No. 4.4 Cost: $450,000 Priority D.
Beginning: 1994 Completion: 1995
East Valley Lift Station Rehabilitation
System Deficiency: The East Valley Lift Station is considered a permanent lift station,
which will serve existing and future commercial developments within a major portion of
the Renton Industrial Subbasin. It does not meet current design codes because it lacks
full redundancy of its vacuum priming system. If the vacuum priming system was to fail,
the lift station would not operate. In addition, the above grade electrical structures have
experienced vandalism. 1
Improvement: The lift station requires rehabilitation and major modifications to
improve reliability and in order to be upgraded to a permanent lift station.
CIP Project No. 4.5 Cost: $100,000 Priority D
Beginning: 1994 Completion: 1995
Lind Avenue Lift Station Rehabilitation
System Deficiency: The Lind Avenue Lift Station, considered)to be a permanent lift
station, was upgraded to a triplex lift station in 1983 and is in good condition. It serves
a major portion of the Renton Industrial Subbasin. However, the above grade electrical
enclosures are susceptible to vandalism.
Improvement: Additional protection should be provided for the electrical enclosures at
this site and modifications made to improve reliability.
CIP Project No. 4.6 Cost: $20,000 Priority E
Beginning: 1995 Completion: 1995 I
' - I
6-19
CHAPTER SIX
Talbot Road Interceptor Replacement
•
System Deficiency: The existing Talbot Road Interceptor is currently undersized to serve
this basin. These existing 8-inch sanitary sewers should be replaced with 12-inch pipe.
This project involves the replacement approximately 2500 lineal feet of existing gravity
sewer.
Improvement: Replace undersized interceptor with larger interceptor to better serve this
area.
CIP Project No. 4.7 Cost: $750,000 Priority E
Beginning: 1995 Completion: 1997
Scenic Hills Sewer Collection
System Deficiency: The existing collection system within the Scenic Hills area of the
South Renton subbasin was constructed between 1947 and 1949 and is comprised of 6-
inch and 8-inch concrete sewers, which are.approaching the end of their useful life and
need to be replaced before structural failures occur. This project involves replacement
of approximately 18,100 lineal feet of existing gravity sewer.
Improvement: Replace existing collection system within the Scenic Hills area.
CIP Number: 4.8 Cost: $3,630,000 Priority: G
Beginning: 2006 Completion: 2008
Talbot Hill Sewer Collection System Replacement
System Deficiency: The existing collection system within the Talbot Hills subbasin was
constructed in 1960 and is comprised of 8-inch and 10-inch concrete sewers, which are
approaching the end of their useful life and need to be replaced before structural failures
occur. This project involves replacement of approximately 20,600 lineal feet of existing
gravity sewer.
Improvement: Replace existing collection system between Lake Avenue S, S 14th
Street, State Route 515, and S 23rd Street.
CIP Number: 4.9 Cost: $4,120,000 Priority: G
Beginning: 2009 Completion: 2010
6-20
Conclusions and Improvements
5. LAKE WASHINGTON WEST BASIN
Renton CBD Sewer Replacement, Phase III (S. 4th Street)
System Deficiency: Existing sewers are old and in poor condition. Replacement of these
sanitary sewer pipeline would improve sewer service to this residential area.
Improvement: Replacement of approximately 500 lineal feet of 8-inch gravity sewer
along S 4th Street between Morris Avenue S and Burnett Avenue S.
CIP Project No. 5.1 Cost: $184,000 Priority B
Beginning: 1992 Completion: 1993
Renton Avenue Interceptor
System Deficiency: A portion of the West Renton Subbasin is currently unsewered. This
project would also allow for the elimination of the Earlington School Lift Station. The
Renton Avenue Interceptor would require approximately 5,500 lineal feet of 12-inch
gravity sewer.
Improvement: If this portion of the Renton Subbasin is annexd, it should be sewered
through the construction of a new sewer interceptor along Renton Avenue S, west of
Rainier Avenue N.
_ I
CIP Project No. 5.2 Cost: $1,500,000 Priority F
Beginning: 1996 Completion: 2000
Earlington School Lift Station Elimination
System Deficiency: The Earlington School Lift Station currently serves the Earlington
School near the intersection of S 132nd Street and S Langston Sheet. Flow from this lift
station is causing capacity problems in the sewer interceptor along W Sunset Boulevard.
The elimination of this lift station will be possible after the completion of the Renton
Avenue Interceptor. The lift station would be fully dismantled, but the force main would
remain in place.
Improvement: Disassemble and remove existing lift station after completion of the
Renton Avenue Interceptor.
CIP Project No. 5.3 Cost: $50,000 Priority F
Beginning: 2000 Completion: 2001
6-21
' I
CHAPTER SIX
Sears Lift Station Replacement
System Deficiency: The Sears Lift Station is in fair condition and does not meet current
design standards for a permanent facility. If it is to be considered permanent, it should
be replaced with a more efficient and reliable facility.
Improvement: Examine the.possibility of eliminating this lift station through the
construction of a gravity interceptor south along Rainier Avenue S to the METRO
Interceptor.
CIP Project No. 5.4 Cost: $350,000 Priority F
Beginning: 1996 Completion: 1998
Airport Lift Station Rehabilitation
System Deficiency: The reliability of this facility needs to be improved.
Improvement: Install emergency power connection.
CIP Project No. 5.5 Cost: $20,000 Priority F
Beginning: 1996 Completion: 1996
West Renton Sewer Collection System Replacement
System Deficiency: The existing collection system within the West Renton subbasin was
constructed in 1951 and is comprised of 6-inch and 8-inch concrete sewers, which are
approaching the end of their useful life and need to be replaced before structural failures
occur. This project involves the replacement of approximately 16,500 lineal feet of
existing gravity sewer.
Improvement: Replace existing collection system between S 134th Street, 80th Avenue
S, and SW Sunset Boulevard.
•
CIP Number: 5.6 Cost $3,300,000 Priority: G
Beginning: 2006 Completion: 2008
6-22
Conclusions and Improvements
6. DUWAMISH ESTUARY BASIN
Black River Interceptor
System Deficiency: Currently, the Black River Basin is unsewered. Providing service
would require the construction of an interceptor along 68th Avenue S from the METRO
Treatment Plant to Martin Luther King Way S. The Interceptor would require
approximately 6000 lineal feet of 8-inch and 12-inch gravity sewer
Improvement: Construct an interceptor along 68th Ave. S.
CIP Project No. 6.1 Cost: $1,320,000 Priority F
Beginning: 1996 Completion: 1999
7. SYSTEM WIDE IMPROVEMENTS
Replace Telemetry and Data Logging System
System Deficiency: The Telemetry and Data Logging System needs to be replaced. The
phased improvements, beginning in 1992 and ending in 1996, are as follows:
1992 - Predesign and preliminary system design.
1993 - System design and Phase I construction including, master station
computer equipment, and telemetry from eight of the most critical
lift stations in the system.
1994 - Add telemetry to the remainder of the lift stations.
1995 - Add telemetry to key collection system locations
1996 - Develop optimization software.
Improvement: Install a new telemetry and data logging system.
CIP Project No. 7.1 Cost: $675,000 Priority B
Beginning: 1992 Completion: 1996 i
6-23
I
CHAPTER SIX
Infiltration and Inflow Testing and Monitoring
System Deficiency: Project involves performing infiltration and inflow testing to gather
data to help calibrate the existing sanitary sewer computer model. This information can
also be used to schedule grouting activities Of existing sewers which is necessary to meet
METRO's requirements for reducing infiltration and inflow.
Improvement: Calibrate existing computer model and direct sewer grouting efforts.
CIP Project No. 7.2 Cost: $1,000,000 Priority: Annual
Beginning: 1991 Completion: 2000
Existing Sewer Grouting
System Deficiency: Old sewers and old sewer grouting contribute to excessive
infiltration into the sanitary sewer system. In order to fulfill METRO's new requirements
for reducing infiltration and inflow, this project is necessary.
Improvement: Grouting of existing sewers.
CIP Project No. 7.3 Cost: $1,000,000 Priority: Annual
Beginning: 1991 Completion: 2000
Miscellaneous Sewer Replacements
System Deficiency: This project is to replace old sewers with structural problems, which
are within roadways that are scheduled for resurfacing.
Improvement: Identify and replace old sewers.
CIP Project No. 7.4 Cost: $5,000,000 Priority: Annual
Beginning: 1991 Completion: 2000
6-24
II
Conclusions and Improvements
D. PROPOSED IMPROVEMENTS BY PRIORITY
TABLE,VI-3 provides a summary of all proposed projects divided by their priorities. It is our
recommendation that these projects begin in the following schedule:
A - 1991 and Prior
B - 1992
C - 1993
D - 1994
E - 1995
F - 1996 and Future
E. PROPOSED IMPROVEMENT BY PROJECT TYPE
TABLE VI-4 provides a summary of all the proposed projects divided by their project type. The
various typed of projects are listed below:
Lift.Station Replacement
Lift Station Rehabilitation
Lift Station Elimination
Existing Sanitary Sewer Replacement
Proposed Sewer System Additions
Miscellaneous Improvements
6-25
f
I '
CHAPTER SIX
TABLE VI-3: PROPOSED IMPROVEMENTS SUMMARY BY PRIORITY
PROJECT PROPOSED CAPITALIMPROVEMENTS QUARTILE PRIORITY COMMENTS
NUMBER
PRIORITY A PRO TECTS ,
1.1 Devil's Elbow Lift Station Rehabilitation I A
12 Devil's Elbow Force Main Repair I A I
1.3 May Valley Interceptor,Section 2 I A
2.1 East Renton Interceptor I A
2.2 Interim Moratorium Area Improvements I A
2.3 Cottonwood Lift Station Replacement I A
2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) I A
3.1 Lake Washington No.2 Lift Station Replacement I A
3.2 West Kennydale Interceptor II A Project in progress
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) II A Performed during I-405 work
PRIORITY B PROTECTS
• 1.4 Honey Creek Interceptor,Phase IV I B Dependent on Project 1.3
13 Sierra Heights Sewer System Construction I B Dependent on Projects 1.1 and 1.2
2.7 Highlands Sewer Replacement,Phase III II B
2.8 South Highlands Interbasin Transfer U B
3.3 Highlands Sewer Replacement,Phases I&II II B
3.4 Highgate Lift Station Elimination II B Dependent on proposed development
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) II B
5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) II B '
7.1 Telemetry and Data Logging System Replacement II B
PRIORITY C PROJECTS
23 Central Renton Sewer Replacement,Phase II(Williams/Pelly) I C Dependent on Project 2.4 j
2.9 Honeydew Lift Station Elimination II C Dependent on proposed development
33 East Kennydale Interceptor II C Dependent on other City improvements
3.7 Kennydale Lakefront Sewer System Study III C _
3.8 Park Avenue Interceptor III C
4.3 Talbot Crest Lift Station Elimination III C j '
PRIORITYPRIMIXJ2/11111ECTS
1.6 Sunset Lift Station Elimination I D Dependent on Projects 1.3 and 1.4
1.7 Devil's Elbow Lift Station Elimination II D Dependent on Projects 1.3 and 1.4
3.6 Azalea Lane Lift Station Elimination II D Dependent on Project 3.5
4.4 SW 34th Street Interceptor Replacement N D
4.5 East Valley Lift Station Rehabilitation N D
PRIORITY?PROJECTS
2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) II E Dependent on Projects 2.4 and 2.5 j
3.9 Boeing Lift Station Elimination III E Dependent on Project 3.8 _,
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) III E
4.6 Lind Avenue Lift Station Rehabilitation N E
4.7 Talbot Road Interceptor Replacement IV E
PRIORITY F PROTECTS
1.8 Misty Cove and Baxter Lift Station Rehabilitation IV F
1.9 Denny's Lift Station Rehabilitation IV F
2.10 Union 600 Lift Station Elimination III F Dependent on Project 2.1 ; _'
2.11 Falcon Ridge Lift Station Elimination in F Dependent on proposed development
2.12 NE 7th Place Sewer Replacement N F
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) III F
5.2 Renton Avenue Interceptor N F 1-
53 Earlington School Lift Station Elimination III F Dependent on Project 5.2 I
5.4 Sears Lift Station Replacement N F
53 Airport Lift Station Rehabilitation N F
6.1 Black River Interceptor N F
PRIORITY 0 PROJECTS
2.13 South Highlands Sewer Collection System Replacement G
3.12 North Highlands Sewer Collection System Replacement G
5.6 West Ration Sewer Collection System Replacement G
4.8 Scenic Hills Sewer Collection System Replacement G .
4.9 Talbot Hill Sewer Collection System Replacement G
6-26
1
I
,
.. Conclusions and Improvements
TABLE VI-4: PROPOSED IMPROVEMENTS SUMMARY BY PROJECT TYPE
PROJECT PROPOSED CAPITAL IMPROVEMENTS QUARTILE PRIORITY j COMMENTS
NUMBER
J.IFT STAT'ON REPLACEMENT
2.3 Cottonwood Lift Station Replacement I A
3.1 Lake Washington No.2 Lift Station Replacement I A
5.4 Sears Lift Station Replacement IV F
J.IFT STAT-ON REHABILITATION
1.1 Devil's Elbow Lift Station Rehabilitation I A
4.5 East Valley Lift Station Rehabilitation IV D
4.6 Lind Avenue Lift Station Rehabilitation IV E
1.8 Misty Cove and Baxter Lift Station Rehabilitation N F
1.9 Denny's Lift Station Rehabilitation N F
5.5 Airport Lift Station Rehabilitation N F
J.IFT STAT ON FI.IMINATION
3.4 Highgate Lift Station Elimination II B Dependent on proposed development
2.9 Honeydew Lift Station Elimination II C Dependent on proposed development
4.3 Talbot Crest Lift Station Elimination in C
1.6 Sunset Lift Station Elimination I D Dependent on Projects 1.3 and 1.4
1.7 Devil's Elbow Lift Station Elimination II D Depende'at on Projects 1.3 and 1.4
3.6 Azalea Lane Lift Station Elimination II D Dependent on Project 3.5
3.9 Boeing Lift Station Elimination III E Dependent on Project 3.8
2.10 Union 600 Lift Station Elimination ID P Dependent on Project 2.1 •
2.11 Falcon Ridge Lift Station Elimination in F Dependent on proposed development
5.3 Harlington School Lift Station Elimination III F Dependent on Project 5.2
EXISTING SANITARY SEWER REPLACEMENT
1.2 Devil's Elbow Force Main Repair I A j
2.2 Interim Moratorium Area Improvements I A I
2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) I A I
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) II A Performed during I-405 work
2.7 Highlands Sewer Replacement,Phase III II B
3.3 Highlands Sewer Replacement,Phases I&II II B
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) II B
5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) II B
2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) I C Dependent on Project 2.4
4.4 _ SW 34th Street Interceptor Replacement IV D
2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory II E Dependent on Projects 2.4 and 2.5
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) III E
4.7 Talbot Road Interceptor Replacement N E
' 2.12 NE 7th Place Sewer Replacement IV F
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) III F
2.13 South Highlands Sewer Collection System Replacement G
3.12 North Highlands Sewer Collection System Replacement G
5.6 West Renton Sewer Collection System Replacement G
4.8 Scenic Hills Sewer Collection System Replacement G
4.9 Talbot Hill Sewer Collection System Replacement G i _
PROPOSED SEWER SYSTEM AlDDITIONS
1.3 May Valley Interceptor,Section 2 I A
2.1 East Renton Interceptor I A
3.2 West Kennydale Interceptor U A Project:in progress
1.4 Honey Creek Interceptor,Phase N I B Dependent on Project 1.3
1.5 Sierra Heights Sewer System Construction . I B Dependent on Projects 1.1 and 1.2
2.8 South Highlands Interbasin Transfer II B I
3.5 East Kennydale Interceptor II C Dependent on other City improvements
3.7 Keanydale Lakefront Sewer System Study III C
3.8 Park Avenue Interceptor III C
5.2 Renton Avenue Interceptor N F
6.1 Black River Interceptor IV F
j4(LSCFT.LAN'EOTIS IMPROVEMENTS
7.1 Telemetry and Data Logging System Replacement II B
7.2 Infiltration and Inflow Testing and Monitoring Annual '
7.3 Existing Sewer Grouting Annual
7.4 Miscellaneous Sewer Replacement Annual
6-27
CHAPTER SIX
F. PROPOSED CAPITAL IMPROVEMENT PLAN SCHEDULE AND CASH FLOW
TABLE VI-5A - 5B provides an implementation schedule and a cash flow analysis for each
proposed improvement. TABLE VI-6A - 6B provides an estimate of the funding from various
revenue sources. These sources included the following:
City of Renton
Local Improvement Districts (LID)
Grants
Developers
METRO
Other
6-28
TABLE VI-5A: COST BREAKDOWN FOR PROPOSED IMPROVEMENTS
PROJECT PROPOSED CAPITAL IMPROVEMENTS CARRY 1991 1992 1993 1994 1995 1996-2010
NUMBER FORWARD Note: Project cast estimates are in 1990 dollars. TOTALS
MAY CREEK BASIN
1.1 Devil's Elbow Lift Station Rehabilitation $167,000 $167,000
1.2 Devil's Elbow Force Main Repair $75,000 $75,000
1.3 May Valley Interceptor,Section 2 3268,000 $590,000 3590,000 $1,448,000
1.4 Honey Creek Interceptor,Phase IV $100,000 3845,000 3945,000
1.5 Sierra Heights Sewer System Construction $100,000 $500,000 $1,320,000 $1,920,000
1.6 Sunset Lift Station Elimination $10,000 $40,000 $50,000
1.7 Devil's Elbow Lift Station Elimination $10,000 $40,000 $50,000
1.8 Misty Cove and Baxter Lift Station Rehabilitation
$450,000 $450,000
1.9 Denny's Lift Station Rehabilitation
$70,000 $70,000
LOWER CEDAR RIVER BASIN
2.1 East Renton Interceptor $350,000 31,445,000 33,000,000 $4,445,000
2.2 Interim Moratorium Area Improvements $132,000 $332,000 $332,000
2.3 Cottonwood Lift Station Replacement $272,000 $272,000 $272,000
2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) S70,000 $200,000 $270,000
2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) $50,000 $150,000 $200,000
N 2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) $50,000 $150,000 $200,000
'O 2.7 Highlands Sewer Replacement,Phase III 320,000 331,000 551,000
2.8 South Highlands Interbasin Transfer 3300,000 5300,000
2.9 Honeydew Lift Station Elimination $20,000 $50,000 $200,000 $300,000 $570,000
2.10 Union 600 Lift Station Elimination $180,000 $180,000
2.11 Falcon Ridge Lift Station Elimination $700,000 $700,000
2.12 NE 7th Place Sewer Replacement $110,000 $110,000
2.13 South Highlands Sewer Collection System Replacement $6,800,000 $6,800,000
LAKE WASHIN.TON EAST B S N
3.1 Lake Washington No.2 Lift Station Replacement $250,000 $250,000
3.2 West Kennydale Interceptor $450,000 $420,500 3420,500 n
3.3 - Highlands Sewer Replacement,Phases I&II _ - _ _ $460,000 _ _ $460,000 $460,000 a
3.4 Highgate Lift Station Elimination 325,000 $200,000 $225,000- - - -- - _
3.5 East Kennydale interceptor 350,000 3200,000 3500,000 $750000 1.:000
3.6 Azalea Lane Lift Station Elimination $10,000 $40,000 $500003.7 Kennydale Lakefront Sewer System Study $25,000 $25,000 $50,000
3.8 Park Avenue Interceptor $63,643 3110,000 3390,000 $500,
3.9 Boeing Lift Station Elimination $50,000 $50,000 b
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) $97,000 325,000 $225,000 $250,000 0
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) $300,000 $300,000 g
3.12 North Highlands Sewer Collection System Replacement $5,800,000 $5,800,000 cu
tri
TABLE VI-5B: COST BREAKDOWN FOR PROPOSED IMPROVEMENTS ti
PROJECT PROPOSED CAPITAL IMPROVEMENTS CARRY 1991 1992 1993 1994 1995 1996-2010
NUMBER FORWARD Note: Project cost estimates are In 1990 dollars. TOTALS
BLACK RIVER BASIN •
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) $121,000 $121,000 $121,000
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) $50,000 $210,000 $260,000
4.3 Talbot Crest Lift Station Elimination $50,000 $150,000 $150,000 $350,000
4.4 SW 34th Street Interceptor Replacement $75,000 $375,000 $450,000
4.5 East Valley Lift Station Rehabilitation 325,000 $75,000 i $100,000
4.6 Lind Avenue Lift Station Rehabilitation $20,000 $20,000
4.7 Talbot Road Interceptor Replacement S100,000 $650,000 $750,000
4.8 Scenic Hills Sewer Collection System Replacement $3,630,000 $3,630,000
4.9 Talbot Hill Sewer Collection System Replacement $4,120,000 $4,120,000
p, JAKE WASHINGTON WEST BASIN
5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) $30,000 $154,000 $184,000
5.2 Renton Avenue Interceptor $1,500,000 $1,500,000
5.3 Earlington School Lift Station Elimination $50,000 $50,000
5.4 Sears Lift Station Replacement $350,000 $350,000
5.5 Airport Lift Station Rehabilitation $20,000 $20,000
5.6 West Renton Sewer Collection System Replacement $3,300,000 $3,300,000
pUWAMISH ESTUARY BASIN
6.1 'Black River Interceptor $1,320,000 $1,320,000
,SYSTEM WIDE IMPROVEMENTS
7.1 Telemetry and Data Logging System Replacement $50,000 $250,000 $150,000 $150,000 $75,000 $675,000
7.2 Infiltnuion and Inflow Testing and Monitoring $80,000 $80,000 $80,000 $80,000 $80,000 $80,000 $1,200,000 $1,600,000
7.3 Existing Sewer Grouting $100,000 $100,000 $100,000 $100,000 $100,000 $1,500,000 $2,000,000
7.4 Miscellaneous Sewer Replacement $200,000 $200,000 $200,000 $200,000 $200,000 $4,500,000 $5,500,000
TOTAL CIP COSTS PER YEAR $2,025,643 $3,800,500 $5,305,000 $3,465,000 $2,945,000 $2,195,000 $37,300,000 $55,010,500
CITY ESTIMATED SHARE OF CIP COSTS $2,464,477 $3,278,781 $2,085,707 $1,469,137 $1,559 138 $33 038,500 $43,895,740
V - - � - - - - -I
TABLE VI-6A: FUNDING SOURCES FOR PROPOSED IMPROVEMENTS
PROJECT PROPOSED CAPITAL IMPROVEMENTS CITY LID GRANTS DEVELOPERS METRO OTHER TOTALS
NUMBER SHARE Note: Project cost estimates are In 1990 dollars.
MAY CREEK B SIN
1.1 Devil's Elbow Lift Station Rehabilitation $100,000 $67,000 $167,000
1.2 Devil's Elbow Force Main Repair $50,000 $25,000 $75,000
1.3 May Valley Interceptor,Section 2 $434,400 $579,200 $434,400 $1,448,000
1.4 Honey Creek Interceptor,Phase IV $567,000 $378,000 $945,000
1.5 Sierra Heights Sewer System Construction $600,000 $600,000 $720,0.00 $1,920,000
• 1.6 Sunset Lift Station Elimination $50,000 $50,000
1.7 Devil's Elbow Lift Station Elimination $50,000 $50,000
1.8 Misty Cove and Baxter Lift Station Rehabilitation $337,500 $112,500 $450,000
1.9 Denny's Lift Station Rehabilitation $70,000 370,0(X)
LOWERLULEILCERARBIYERIASIN
2.1 East Renton Interceptor $2,500,000 $1,500,000 $445,000 $4,445,000
2.2 Interim Moratorium Area Improvements $132,000 $200,000 $332,000
2.3 Cottonwood Lift Station Replacement $272,000 $272,000
2.4 Central Renton Sewer Replacement,Phase I Welly/Garden) $270,000 $270,000
2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) $200,000 $200,000
W 2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) $200,000 $200,000
i-` 2.7 Highlands Sewer Replacement,Phase III $51,000 $51,000
2.8 South Highlands Interbasin Transfer $150,000 $150,000 $300,000
2.9 Honeydew Lift Station Elimination $114,000 $456,000 $570,000
2.10 Union 600 Lift Station Elimination $36,000 $144,000 $180,000
2.11 Falcon Ridge Lift Station Elimination $200,000 $500,000 3700.000
2.12 NE 7th Place Sewer Replacement $55,000 $55,000 $110,000
2.13 South Highlands Sewer Collection System Replacement $6,800,000 $6,800,000
JAKE WASHINGTON EAST BASIN
3.1 Lake Washington No.2 Lift Station Replacement $250,000 $250,000
- -_ 3.2 West Kennydale Interceptor $315,375 3105,125 $420,500 n
-
33 Highlands Sewer Replacement;Phases I A-II --- ----$460,000-------------_ _ $460,000
3.4 Highgate Lift Station Elimination $112,500 $112,500 $225,000 R
3.5 East Kennydale Interceptor $750,000 $750,000 0
3.6 Azalea Lane Lift Station Elimination $50,000 $50,000 y
3.7 Kennydale Lakefront Sewer System Study $50,000 350,000 §.
3.8 Put Avenue Interceptor $500,000 $500,000
3.9 Boeing Lift Station Elimination $50,000 $50,000 il _
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) $250,000 $250,000 0
3.11 North Renton Sewer Replacement,Phase IIe
epl t, (Logan/Wells) $300,000 $300,000 en
3.12 North Highlands Sewer Collection System Replacement 35,800,000 $5,800,000 r,
r'
I.
y�
y
kl
TABLE VI-613: FUNDING SOURCES FOR PROPOSED IMPROVEMENTS ti
PROJECT PROPOSED CAPITAL IMPROVEMENTS CITY LID GRANTS DEVELOPERS METRO OTHER TOTALS
NUMBER SHARE Note: Project cost estimates are In 1990 dollars
L
BLACK RIVER BASIN
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) 3121,000 $121,000
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) $260,000 $260,000
4.3 Talbot Crest Lift Station Elimination $250,000 $100,000 $350,000
4.4 SW 34th Street Interceptor Replacement $450,000 $450,000
43 East Valley Lift Station Rehabilitation 3100,000 $100,000
4.6 Lind Avenue Lift Station Rehabilitation $20,000 $20,000
4.7 Talbot Road Interceptor Replacement $300,000 $450,000 $750,000
4.8 Scenic Hills Sewer Collection System Replacement $3,630,000 $3,630,000
4.9 Talbot Hill Sewer Collection System Replacement nt $4,120,000 $4,120,000
a, JAKE WASHINGTON WFST BASIN
tW 5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) $184,000 $184,000
5.2 Renton Avenue Interceptor $750,000 $750,000 $1,500,000
5.3 Earlington School Lift Station Elimination $50,000 •
$50,000
5.4 Sears Lift Station Replacement $350,000 $350,000
. 55 Airport Lift Station Rehabilitation $20,000 $20,000
5.6 West Renton Sewer Collection System Replacement $3,300,000 $3,300,000
J)UWAMISH ESTUARY BASIN
6.1 'Black River interceptor $660,000 $660,000 $1,320,000
SYSTEM WIDE IMPROVEMENTS
7.1 Telemetry and Data Logging System Replacement $675,000 $675,000
7.2 Infiltration and Inflow Testing and Monitoring $1,600,000 $1,600,000
7.3 Existing Sewer Grouting $2,000,000 $2,000,000
7.4 Miscellaneous Sewer Replacement $5,500,000 $5,500,000
TOTAL CEP COSTS PER FUNDING SOURCE $43,885,775 $2,110,000 $600,000 $6,010,000 $579,200 $1,825,525 $55,010,500
CHAPTER VII
OPERATION AND MAINTENANCE
CHAPTER VII
OPERATION AND MAINTENANCE
A. SANITARY SEWER SYSTEM OPERATION
A comprehensive maintenance program allows the City to optimize its use of the existing
collection system and pumping facilities, thereby extracting the maximum life and capacity of
each facility. This permits the same facilities to accommodate greater flow rates and more
system connectionswhile minimizing construction of new facilities. A properly maintained
facility is less likely to fail. Thisreduces the operating costs of the utility because of lower
damage compensation costs and overtime costs for maintenance personnel. It also protects the
environment and the public health by minimizing sewage overflows.
B. CURRENT OPERATION AND MAINTENANCE PROGRAM
The current operation and maintenance program for the sewer utility is discussed in this chapter.
The operation and maintenance program consists of four elements:
Normal Operations
Emergency Operations
Preventive Maintenance
Staffing
1. NORMAL OPERATIONS
Normal operation of the sanitary sewer utility is a combination of interaction between the
Wastewater Utility Section (located in City Hall) and the Operation and Maintenance Division
(located in the City Shop Facility).
a. ORGANIZATIONAL STRUCTURE
The sewer utility operates under the direction of the Administrator of Planning, Building and
Public Works, Ms. Lynn Guttnaann. The Sanitary Sewer Operation and Maintenance Division is
supervised by Mr. Gary Morrison who reports to the Field Maintenance (Supervisor, Mr. Jack
Crumley. The Wastewater Utility Section is supervised by Mr. Randall Parsons who reports to
the Utility Systems Division Manager, Mr. Richard Anderson. Mr. Jack Crumley and Mr.
Richard Anderson report to Ms. Lynn Guttmann.
The certifications.based on successful completion of training courses and examinations held by
the Operation and Maintenance and Engineering staff are listed in TABLE VH-1.
Training consists of special courses and seminars specifically designed for the requirements of
sanitary sewer utility employees. The training is offered through such organizations as the APWA
7-1
CHAPTER SEVEN
TABLE VII-1: CITY PERSONNEL AND CERTIFICATION
OPERATION AND MAINTENANCE PERSONNEL
PERSONNEL POSITION CERTIFICATION RESPONSIBILITIES
Gary Morrison Supervisor Wastewater Collection III Oversees and manages sanitary sewer
system operation and maintenance.
Ralph Nelmeyer Foreman Wastewater Collection I Coordinates maintenance work.
Oscar Cantu Main Worker III Wastewater Collection I Maintenance worker. Primarily
responsible for lift stations.
j
Don Jacob Maint.Worker III Wastewater Collection I Sanitary sewer maintenance worker.
Malcolm Thompson Maint.Worker III Wastewater Collection I Sanitary sewer maintenance worker.
Steve Pielak Maint.Worker III Wastewater Collection I Sanitary sewer maintenance worker.
Ron Shaffer Main.Worker III Wastewater Collection I Sanitary sewer maintenance worker.
WASTEWATER UTILITY SECTION PERSONNEL
PERSONNEL POSITION CERTIFICATION RESPONSIBILITIES
Randall Parsons Stormwater and Professional Engineer Evenly divides his time between managing j
Wastewater Utility projects in the Stormwater and Wastewater
Section Supervisor Utility Sections.
Dave Christensen Wastewater Civil Engineer II Manages capital improvement projects
Engineer and reviews City and private sanitary
sewer system additions.
Mike Benoit Wastewater Engineering Specialist II Assists in managing CIP and the
Engineer Comprebennsive Sewer Plan Update.
Administers agreements,side sewer
permits and provides public information.
Dave Jennings. Stormwater Civil Engineer II Manages the Infiltration and Inflow
Engineer Engineer-in-Training Program for the Wastewater Utility
for about 10 percent of his time(other
90 percent of his time is spent with his
regular duties in the stormwater utility).
7-2
Qperations and Maintenance
(local section), various trade organizations, local colleges and universities; Seattle-King County
Health Departments, other sewer utilities, and by industrial training specialists. Renton's policy
of supporting and promoting operator training should be continued
As the complexity of the system increases and as the service area expands, the need for trained,
efficient staff to keep pace with public demand and advances in technology will become
imperative. New employees need orientation and basic information, while more experienced
employees can improve by continued training.
Training opportunities are of such importance to effectively operating the system that Renton has
linked them to its overall personnel evaluation program. Employees are evaluated and promoted
through a set of job categories that are increasingly well paid. It is essential that the promotional
program continue to be closely linked with the training program, not only because it promotes
efficient operation, but because mandatory certification of wastewater utility workers is required
by the state. Qualifications and training requirements for obtaining and maintaining certification
are stipulated by the State Department of Health. The City Council and Administration have
approved expenditures for increased training with the result that improved proficiency levels have
occurred in the last five years.
b. COMMUNICATION
Efficient and economical functioning of a team requires adequate provision for regular, effective
communication among its members. The normal channels of communication available to
maintain effective coordination are:
Vehicular two-way radios
Regularly kept work logs
Regular inspection reports
Daily work assignment meetings
Inventory and other record keeping practices
Emergency phone numbers for "on-call" employees
Direct, City owned telephone connection to City Hall
Weekly staff meetings
The sewer utility does not have a comprehensive system operation manual; however, lift station
facility operation and maintenance manuals are available for staff reference. City staff have
maintained the policy of requiring complete operation and maintenance' manuals for all new
equipment and facilities. In addition, we recommend that a system wide Operations and
Maintenance manual, including emergency response procedures, be prepared and updated on a
regular basis.
7-3
CHAPTER SEVEN
c. EQUIPMENT AVAILABILITY
Sewer maintenance staff is equipped primarily with rented equipment. The equipment available
for daily use includes rolling stock, shop tools and incidental equipment as well as other portable
equipment for field use. The vehicles and other rolling stock are listed in TABLE VII-2 with
a description of their primary use in the department. A description of each vehicle and its uses
is presented below.
The existing inventory appears adequate at current staffing levels but should increase in
proportion to customer increases. The City should examine the backup capabilities of the
inventory, based on critical equipment or facility failure, and make provisions for additional
material procurement on a short notice basis where necessary.
TABLE VII-2: WASTEWATER UTILITY DEPARTMENT EQUIPMENT(1989)
ROLLING STOCK
Vehicle# Year Vehicle Description
C-75 1976 Utility TV inspection unit
D-58 1987 Lift station utility truck
D-51 1987 Manhole and line service truck
E-71 1986 Aquatech high velocity sewer jet
and vacuum unit
S-91 1976 Mechanical rodding
OTHER EQUIPMENT
Amount Equipment Description
4 Wacker compactors
1 3-inch trash pump
4 Trash diaphragm pumps
1 Chainsaw
1 Set of emergency lighting
1 Emergency generator
7-4
Operations and.Maintenance
UTILITIES T.V. INSPECTION UNIT
EQUIPMENT #C-75
This unit is a closed-circuit T.V. system used for inspecting underground utility lines,
primarily sanitary sewer and storm drain lines. It is fully self-contained with a generator,
compressor, and water supply. Its primary use is to determine conditions of existing lines
and any repairs or replacement necessary. The T.V. van is an important part of the
maintenance program to help determine priority areas that require further attention and
maintenance.
LIFT STATION UTILITY TRUCK
EQUIPMENT #D-58
This vehicle is used by the lift station crew for inspection, maintenance and repair of •
sewer pump stations. It is equipped with a crane used for lifting pumps and equipment •
as needed, and utility compartments for parts, tools, etc. This vehicle is also used to
transport the mechanical rodding machine and to assist with other maintenance procedures
as needed.
MANHOLE AND LINE SERVICE TRUCK
EQUIPMENT #D-51
This vehicle is used by the line crew for inspection and repair of manholes and lines. It
is equipped with a crane hoist for lifting and setting manhole rings and equipment used
in repair work. It carries parts used in sewer line repair such as couplings, fittings,plugs,
etc. It is also equipped with an auxiliary hydraulic power unit that operates jackhammers,
compactors, and pumps making this vehicle self-contained for exposing and excavation
procedures.
AQUATECH HIGH VELOCITY SEWER JET AND VACUUM UNIT EQUIPMENT
EQUIPMENT #E-71
The Aquatech has a wide variety of uses in the utility maintenance programs. It is
primarily used to clean sewer lines and remove solid debris (i.e.,rocks, silt, dirt) from the
lines that could create flow restrictions and blockages. There are a number of lines in the
City, primarily in the downtown area, that have inconsistent grades creating septic
conditions within the lines. A part of the maintenance program is to use the Aquatech
to flush water through these particular lines periodically to prevent those conditions from
occurring. The Aquatech is the primary equipment used for emergency blockages in the
lines and is used to assist T.V. inspection by setting cables.
•
7-5
i ,
CHAPTER SEVEN
MECHANICAL RODDING MACHINE
EQUIPMENT #S-91
The mechanical raider is used to remove roots and grease that accumulate within sewer
lines creating flow restrictions and blockages. Numerous lines throughout the City have
been examined and discovered to have had a history of problems created by roots and
grease. These particular lines are rodded periodically to ensure there is no interruption
of flow.
d. ROUTINE OPERATIONS
Routine operations involve the analysis,formulation, and implementation of procedures to ensure
that the sanitary sewer facilities are functioning efficiently. The utility's maintenance procedures
are good, with repairs being made promptly so customers do not experience unnecessary
inconvenience. •
Side sewer maintenance can be a major problem within a sanitary sewer system. Side sewers
are owned and should be maintained by the individual property owners. City policy is that
individual property owners are responsible for maintaining their side sewers. If a problem
occurs, the property owner is to contact a private plumber to investigate and correct the problem.
If the property owner can show that the problem is within the publicly owned sewer main, then
the City will correct the problem and reimburse the property owner for expenses incurred.
e. RECORDS
Providing time for keeping and maintaining accurate records should be an integral consideration
in determining the time to be allotted to any departmental task. Adequate records are an essential
tool in utility management and operation,providing the supporting data for operations assessment
and long-term planning, while saving time and reducing difficulty when trouble arises.
The sewer utility has need for several types of records: facility operation, records, personnel,
customer contact, inventory, and facility maintenance and repair. These and other appropriate
documents should be legible, concise, permanent, accurate and accessible. Their importance to
the efficient functioning of the utility is critical.
Up-to-date maps of the sanitary sewer system are important for operation and maintenance.
Changes or additions to the sanitary sewer system should be added as they occur. The City
maintains an updated 1"= 400' scale map of the sanitary sewer system that is useful to the
operations and maintenance staff. These utility maps show the sanitary sewer size and location,
manhole location and number, cleanout location, and lift station and force main locations. As-
7-6
Operations and Maintenance
built drawings of much of the existing sanitary sewer system are kept on file in the Utility
Systems. Division at City Hall. This information is useful in helping the operation and
maintenance staff to locate sanitary sewer lines and service connections from these drawings.
Plat maps or.construction drawings for new sanitary sewer extensions within the distribution
system should continue to be kept for the sanitary sewer system.
2. EMERGENCY OPERATIONS
•
The City responds to emergencies involving the sanitary sewer system thiough the use of on-call
personnel. The Sanitary Sewer Department does not have an emergency response plan that
identifies how Renton should react to an emergency. It is recommended that the City prepare
an emergency response plan for the sewer utility. This plan should include the functions and
responsibilities of personnel, procedures to be followed, maps of each facility, contact lists, and
communication procedures. The emergency response procedures should be available both in
report form and through a computer program 'prepared specifically for that purpose. The
emergency response plan should be updated every two years.
C. PREVENTIVE MAINTENANCE
Maintenance schedules that meet or exceed manufacturer's recommendations should be
established for all critical components in the sanitary sewer system. The following schedule
should be used as a minimum for preventive maintenance:
Sewage Lift Stations
Daily: Observe and record motor current draw; check
packing; log and record pump motor hours; check
motor noise, temperature, vibration.
Weekly: Check security.
Semiannually: Change motor oil.
As Needed: Recoat structures and piping; maintain electrical and
hydraulic controls.
Wet Well Facilities '
Weekly: Check security: Check float settings.
Annually: Check interior condition,ladder,hatches,etc.,in wet
well.
As Needed: Recoat interior as needed in wet well (estimated 10-
to 15-year frequency).
Sanitary Sewer System
Twice Per Week: Check inspection manholes !for flow reduction.
Clean lines when flow in sewers is reduced.
7-7
CHAPTER SEVEN
Semiannually: Cut roots in sewers with root problems.
Tools & Equipment
1. Rolling Stock
Daily: Check all fluid levels and brakes.
As Needed: Replace fluids and filters in accordance with
manufacturer's recommendations (or more
frequently depending on type of use).
2. Tools
As Needed: Clean after each use; lubricate and maintain as
necessary. ,
D. STAFFING
The preventive maintenance procedures and normal as well as emergency operations of the utility
are described in the previous sections. The hours of labor and supervisory activity required to
effectively carry out the work of these on-going maintenance and operations schedules and
engineering responsibilities form the basis for determining adequate staffing levels.
1. MAINTENANCE AND OPERATIONS STAFF
The current staff organization is illustrated in TABLE VII-1. There are at present seven
employees, including supervisory personnel and maintenance workers, who operate and maintain
the sanitary sewer system. The tasks that are performed by sewer utility staff include inspection,
testing, installation and repair of system facilities and routine preventive maintenance, record
keeping, administrative tasks, and corrective action required in response to emergencies.
The hours of work required to adequately maintain the sanitary sewer system are shown in
TABLE VII-3. For preventive maintenance alone,the annual hours total 3,589, or 69 crew hours
per week. This requires nearly 2 crew members working full time, i.e., 40 hours per week,
excluding vacation, sick leave, and all other tasks not related to preventive maintenance.
The hours of work required for operational tasks for the sanitary sewer system are shown in
TABLE VII-4. For operational tasks alone, the annual hours total 8,535, or 164 crew hours per
week. This requires more than 4 crew members working full time, i.e., 40 hours per week,
excluding vacation, sick leave, and all other tasks not related to operation of the sanitary sewer
system.
The total operation and preventive maintenance time required is 12,124 hours per year, which
is equivalent to six people working full time, 40 hours per week.
7-8
I I
Operations and Maintenance
II
TABLE VII-3: STAFFING TIME FOR PREVENTIVE MAINTENANCE
FACILITY OR FREQUENCY OF QUANTITY IN 1 TIME REQUIRED
EQUIPMENT MAINTENANCE SYSTEM TIME PER UNIT PER YEAR
Lift Station Annually 22 Stations 16 Manhours 1 352 Hours
Maintenance
Sewage Pump and Annually 45 Pumps 8 Manhours 360 Hours
Motor Maintenance
� I
Check Inspection Twice per Week 106 Manholes 10 Minutes 1837 Hours
Manholes
ti Root Cutting Semiannually 19200 LF 1500 LF/30 Mhours 768 Hours
Grease Removal Annually 5200 LF 1500 LF/30 Mhouis 104 Hours
Line Flushing Once per Month 1 Set 14 Manhours 168 Hours
TOTAL PREVENTIVE MAINTENANCE 3589 Hours
TABLE VII-4: STAFFING TIME FOR OPERATION TASKS
TASK TIME PER TIME REQUIRED
ACTIVITY FREQUENCY ACTIVITY PER YEAR
Lift Station Inspection Daily 7 Mhours/Day 2555 Hours
Video Inspection Once per Week 30 Mhours/Week 1560 Hours
Work Logs Daily 10 Mhours/Day 2600 Hours
Vehicle Inspection Daily 0.5 Mhours/Vehicle 650 Hours
Staff Meetings Daily 0.5 Mhours/Day 910 Hours
Tool and Once per Week 5 Mhours/Week , 260 Hours
Equipment Cleaning
TOTAL FOR OPERATIONS 8535 Hours
Source: Gary Morrison
7-9
CHAPTER SEVEN
If due consideration is given to the hours involved in vacation, holiday, illness, meetings,
training, on-the-job travel and startup time, then the total number of hours actually available for
performing the work of operation and maintenance diminishes to a level of approximately 1,662
hours per year per crew member. At this rate, a staff of eight full-time maintenance crew
members is necessary to accomplish preventive maintenance and normal operations activities and
respond to emergencies.
This analysis indicates that the Wastewater Utility Operation and Maintenance Department is not
adequately staffed to regularly perform the basic tasks required to provide minimum
recommended maintenance to the system. An expansion of the system requiring new service
connections and/or additional facilities, without enlargement of the staff, will result in increased
neglect of necessary maintenance. In view of predicted population growth in the service area
over the next several years and the growing demand for sanitary sewer service, the need for
additional staffing will continue.
Many arguments support the wisdom of adequate staffing in any work place. The most
persuasive argument relevant to a complex sanitary sewer system is that short staffing causes
preventive maintenance schedules to be neglected. When routine,regular preventive maintenance
tasks are dropped, breakdowns result, increasing both breakdown maintenance and excessive
reliance on expensive standby equipment required to resolve emergencies.
Regular performance of all necessary work in the Wastewater Utility Operation and Maintenance
Division, with the current number of service connections, will require additions to the present
maintenance crew. The expected increase in the number of service connections should serve as
further impetus to develop a staff of an adequate size to effectively operate and maintain the
system.
The size of the maintenance crew should be increased from six to eight personnel while retaining
the supervisor. This addition to the staff will create the adequate number of crew hours
necessary to carry the full work load of the Utility without neglecting preventive maintenance,
emergency preparedness, or safety precautions. Maintenance and technical staff additions should
be accompanied by additions to the clerical, secretarial and other support staff needed to ensure
that record keeping, billing, public relations, communications and other general functions of
support staff are performed with the accuracy and timeliness required.
2. WASTEWATER UTILITY ENGINEERING STAFF -
The current engineering staff organization is illustrated in TABLE VII-1. There are currently
four employees involved in utility engineering tasks; however, the Wastewater Utility section
supervisor works part-time in the Stormwater Utility. The engineering staff is responsible for
two major tasks, administrative and capital improvement projects.
7-10
Operations and Maintenance
The various administrative tasks and the hours of work required are;shown in TABLE VII-5.
The number of hours required for each task is not easily defined; therefore, work loads have been
estimated based on a full-time employee (PTE). Administrative tasks alone requires
approximately 2.0 FTE's. Therefore, it is evident that the administrative activities require a
major portion of the engineering staff resources.
TABLE VII-5 also shows the capital improvement projects which are currently under way within
the City. These five projects require approximately 0.8 FTE's. The total time required to
perform all the tasks that the City is currently performing is approximately 2.8 FTE's, which
corresponds very closely to their current staffing level of 2.6 FTE's.
Most of the capital improvement projects identified in the 1983 Comprehensive Sewer Plan were
not completed. The primary reason for the City's inability to carry out a capital improvement
program is not a lack of available funding, but a past and current lack of engineering staff to
design or manage the projects.
- The level of staffing within the City's Wastewater Utility section may!be the biggest obstacle to
the implementation of this plan. The proposed capital improvements require that approximately
14 to 16 projects are under way at any one time. Current staffing levels can only accommodate
approximately four capital improvement projects. In order to implement this plan, additional
staffing of approximately 2.5 FTE's will be required in order to accommodate 14 to 16 capital
improvement projects per year, beginning in 1991. Additional administrative tasks which are
recommended in this plan are (1) prepare new ordinances and revise existing ordinances, (2)
setup and administer grease trap management and certification ordinance, (3) inventory and
update hydraulic computer model, and (4) perform computer an alyses using the sewer system
hydraulic model. These tasks will require additional staffing of approximately 0.5 FTE's. This
will bring the total additional staffing, requirements for both administrative tasks and capital
improvement projects up to 3.0 FTE's, bringing the total wastewater staffing level up to 5.5
FTE's. These additions will likely result in the section supervisor increasing supervision duties
and eliminating project managements duties.
7-11
CHAPTER SEVEN
TABLE VII-5: WASTE WATER UTILITY ENGINEERING STAFF TIME
NUMBER OF
ENGINEERING TASKS EMPLOYEES
Section Supervison 0.20 FTE's
Latecomer's Agreement Administration 0.20 FTE's
Sewer Moritorium Administration 0.30 FTE's
Plan Review Support 0.60 FTE's
Comprehensive Sewer Plan Update 0.20 FTE's
Customer Service Support 0.25 FTE's
Support to Other Divisions/Departments/Agencies 0.25 FTE's
TOTAL ADMINISTRATIVE TIME 2.00 FTE's
Major Capital Improvement Projects
East Renton Interceptor 0.20 FTE's
Minor Capital Improvement Progects
West Kennydale Interceptor 0.20 FTE's
Interim Sewer Improvements 0.10 FTE's
Lake Washington Sewer Improvements 0.10 FTE's
Park Avenue Interceptor 0.10 FTE's
Infiltration and Inflow Program 0.10 FTE's
TOTAL CIP TIME 0.80 FTE's
TOTAL ENGINEERING TIME 2.80 FTE's
FTE's=Full Time Employees
Source: Randall Parsons,Stormwater and Wastewater Utility Supervisor
•
••
7-12
CHAPTER VIII
FINANCIAL IMPACTS
CHAPTER VIII
FINANCIAL ANALYSIS
A. INTRODUCTION
This chapter considers the financial impacts that , the Capital Improvement Plan (CIP),
recommended in Chapters 5 and 6, will have on the wastewater utility's budgeting process. The
proposed wastewater'utility CIP consists of the rehabilitation, replacement and new construction
of sewer facilities that are necessary to meet the policy goals stated in ',Chapter 3, the design
standards and criteria presented in Chapter 4 and the service needs that will result from
anticipated growth.
This chapter also presents a financial analysis of the wastewater utility which identifies its
historical and projected future expenses and compares them to available and projected revenues
in order to determine the necessary rate adjustments.
A utility rate study that evaluated the operation of the 401 and 421 funds and made specific rate
recommendations was completed in November 1989 (Water and Wastewater Rates Managements
Analysis, RH2 Engineering P.S.). This rates management analysis was intended to guide rates
management for a period of two years while a reorganization of the Public Works Department
was taking place. During the first quarter of 1992, the financial models developed in the rates
management analysis should be updated so that recommended rates can beadjusted to accurately
reflect the current financial situation within the utility.
The utility's financial situation has also changed because of new state laws regarding how fees
and charges must be calculated (Substitute House Bill 2929), and because the City is taking steps
to adjust all of its rates, fees, and charges to meet its projected costs.
In this chapter two sets of numbers are used. Current 1990 dollars are used to project the costs
of operations, maintenance, and capital improvement programs. However, several factors may
affect the accuracy of those projections. The most significant factor is inflation. Although we
cannot predict the exact amount inflation will increase costs, we estimate it will be 5% a year.
Other factors that may affect future costs that we have not included in 'our cost estimate are
contractor availability, technological advances, and changes in laws and policies.
B. WASTEWATER UTILITY EXPENSES AND REVENUE REQUIREMENTS
There are four major expenses of the wastewater utility, which fall under two broad categories--
operating expenses and actual construction costs for CIP projects. Operating expenses include
costs for operations and maintenance and METRO charges. Actual construction costs include
the expenses for implementing the CIP and debt service costs. Inflation, defined as a general rise
in prices, affects each of these expenses to a different degree. A summary of the major expenses
8-1
CHAPTER EIGHT
of the Wastewater Utility is shown on FIGURE 9.
A detailed description of each expense is presented below. To determine the revenues needed
to meet each expense, one mustforecast future levels of 1) inflation, 2) customer service
increases, 3) METRO rate increases, 4) increases in operations and maintenance costs, 5) the
City's share of costs for financing the CIP, and 6) anticipated revenues from other sources to
finance the remaining portions of the,CIP.
C. OPERATING COSTS AND REVENUES
All operating costs fall into two general categories: 1) The city's operations and maintenance
expenses (controlled by City's budget process) and 2) the METRO sewage treatment charges (no
direct control by the city). A summary of these costs is shown on FIGURES 9 and 10. It is
evident from FIGURE 10 that the majority of the operating costs are a direct result of METRO •
changes. The Wastewater Utility rate increase necessary to cover the operating costs is presented
in TABLE VIII-1.
1. Municipality of Metropolitan Seattle (METRO) Charges
METRO charges for wastewater treatment and disposal. As part of its service contract
with METRO, the City collects that charge from its customers through the utility billing
division and passes it on to METRO. METRO has increased its rates substantially and
will continue to do so to meet new treatment requirements. METRO treatment services
are forecast to increase at an average annual rate of 13%.
2. City of Renton Operations and Maintenance
a. Costs
The estimated costs to operate the wastewater utility include salary costs for the
operation, maintenance, engineering and administration of services, taxes, office
supplies, debt service, and consulting fees.
For eighteen months the wastewater utility has been in transition because of the
Public Works Department's reorganization which separated the wastewater utility
from the water utility. As part of the reorganization, the number of staff and
additional staff positions for each utility were identified. For purposes of this
financial analysis,recommended staffing levels for operating the wastewater utility
were predicted to be reached within a five-year period in order to keep pace with
anticipated growth. Inflation for labor is estimated to be 5% annually, with an
additional 5% step increase applicable to 50% of the work force. Other expenses
are anticipated to increase at the estimated inflation rate of 5%.
8-2
Financial Analysis
CITY'S REVENUE BREAKDOWN SUMMARY
FIGURE 9
Revenue projection requirements based on proposed capital
improvements and operation and maintenance.
S3
2.28M
»:206M ``
•
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Si
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YEAR
no City Operations 0 City Proposed CIP
8-3
i [
• ,
CHAPTER EIGHT
._
TOTAL REVENUE REQUIREMENT SUMMARY
FIGURE 10 ,
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'"%Mi0A,es. .• 1:12.: V;•::' 'iM.*:::-,:;:4 .:.**.4:*>.f ti.:0:00**:!IF':"14.'....re''.::,'f.:ft ;:-'*:.‘ ..';',..'.: ."..
•
MI j*` .?,3 :,,..1:'•:.;, in.N.N.„t 6 io%V....0 itsN::::W.'•.,..A
. 4 Immo-"'"r.•14 ak.e.:'••••44.0::4k. P:;:ai‘Vft4M i'.4 apat** •;:r:•':"..p.;:i 40: .v.14:.:,•:/x*K.G..
A•4• .q * W
P..:*k•:>,:.:1:iVii '....k•i', Voc•W4* TIO.,,:fioVktegig: i.?: , w*
..:,. 44:q,::. ...P-0.7.A .;..,15:
..:...:: -:k..: t.. :Wii01:Aglii:.:4.::•.: 04iii i .: ere.....,.. ...,„, kt ::•:0Aidt.:4::i
so ,/--1fo4,..":..-.zeo.•m,iNm4.,,...:.:.::4mo:g_Viko:*i4,0o:• Yw(. •1t: 4'K i1:v.p<:0i otrg(:. -k6.AA:01..4p00.mu1:f.m%i.*:g...4.-:. , 41h094ti:74o4r.,.:t:,. ek.:4pi",ov...e:.,e.....0v. ..44.0:,..,4.:.:.P0.:-
rriAtt % r'< <
.,..,.
44.,,,.4.,_ • :,..: 4...,...,.,...4.:•••• ......„:444.: ...s,
• ;
1990 1991 1992 • 1993 1994 1995
YEAR
resm METRO Revenues ism City Operation :=1 City Proposed CIP
TABLE VIII-1: PROJECTED SANITARY SEWER RATE INCREASES FOR A SINGLE-FAMILY
RESIDENCE BASED ON PROPOSED RECOMMENDATIONS IN THIS PLAN
Year 1991 1992 1993 1994 1995
Projected City
Rate Increases 11.9% 18.1% •16.9% 9.5% 8.8%
City Charges $7.70 .
$9.09 $10.63 $11.64 $12.66 --1
i I
Projected METRO
Rate Increases 18.2% 12.9% 10.7% 10.0%
METRO Charges $13.20 $15.60 $17.62 $19.50 $21.45
Total Projected
Rate Increase 18.2% 14.4% 10.2% 9.6%
Total Billings $20.90 $24.69 $28.25 $31.14 $34.11
,--
• ,
8-4
•_,
• 1
Financial Analysis
OP FINANCIAL ANALYSESFIGURE11 SUMMARY
Projected expenditus based on proposed
capital improvement replan.
.:.:::::.:
abet
}t a
ina
< jj❑� .,: :.2.`•', ''} ,�.4.,., fir :•Q.,.
::<:.-�~`^ :<' `Y ..v%f• .:N�'+rvv, ::::i,X C;" ''{
:v ::. vx, 4 4
'Q :
$4 b�
t•�u,ty#�t,
rt.iliiili::�` x
cn iig”kvi ' -- '' -.''',.' .'.: .;ilii.ii!i.:ii:x....:.,.,•,,:,.:•,,v.•4:13:umz,F:.z,;,'..4,',w• :-.;..-...,:,-,:i .4::::::.:::::::::ii:,
O
El
...................
.....................
�:'::::::.......:.::::.
iessiiii
$2-'
Inflated CIP Cost
$
]
Current st
CIP Co
Inflated CityShare
::::::::::.:,:::::. ..
:.::::::::::: :::.::.
Current rren City
Cost
$0
1991 ]992 1993 1994 1995
YEAR
TABLE VIII-2: RMA AND COMPREHENSIVE PLAN CIP COST COMPARISON
CURRENT COSTS INFLATED COSTS •
City's Share City's Share Total Project City's Share City's Share Total Project
of CIP Costs of CIP Costs Costs From of CIP Costs of CIP Costs Costs From
YEAR From RMA From This Plan This Plan From RMA From This Plan This Plan
1991 $1,991,900 $2,464,477 $3,800,500 $2,091,495 $2,587,701 $3,990,525
1992 $3,278,897 $3,278,781 $5,305,000 $3,614,984 $3,614,856 $5,848,763
1993 $3,023,269 $2,085,707 $3,465,000 $3,499,736 $2,414,414 $4,011,084
1994 $2,335,049 $1,469,137 $2,945,000 $2,838,252 $1,785,736 $3,579,648
1995 Not Estimated $1.709,138 $2,695.000_ Not Estimated $2,181,373 $3,439,629
RMA=Rates Management Study Inflated Dollars=Assume 5.%annually
Current Costs= 1990 Dollars
8-5
ej
1.4
b
TABLE VIII-3A: COST BREAKDOWN FOR PROPOSED IMPROVEMENTS Itl
XI
trI
PROJECT PROPOSED CAPITAL IMPROVEMENTS CARRY ANNUAL CASH FLOW TOTAL
NUMBER FORWARD 1991 1992 1993 1994 1995 1996-2010 COST
4
PRIORITY A PROJECTS
1.1 Devil's Elbow Lift Station Rehabilitation $167,000 $167,000
1.2 Devil's Elbow Force Main Repair $75,000 $75,000
1.3 May Valley Interceptor,Section 2 $268,000 $590,000 $590,000 $1,448,000
2.1 East Renton Interceptor $350,000 $1,445,000 $3,000,000 $4,445,000
2.2 Interim Moratorium Area Improvements $132,000 $332,000 $332,000
2.3 Cottonwood Lift Station Replacement $272,000 $272,000 $272,000
2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) $70,000 $200,000 $270,000
3.1 Lake Washington No.2 Lift Station Replacement $250,000 $250,000
3.2 West Kennydale Interceptor $450,000 $420,500 $420,500
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) $121,000 $121,000 $121,000
PRIORITY B PROJECTS
00 1.4 Honey Creek Interceptor,Phase IV $100,000 $845,000 $945,000
p., 1.5 Sierra Heights Sewer System Construction $100,000 $500,000 $1,320,000 $1,920,000
2.7 Highlands Sewer Replacement,Phase IH $20,000 $31,000 $51,000
2.8 South Highlands Interbasin Transfer $300,000 $300,000
3.3 Highlands Sewer Replacement,Phases I&II $460,000 $460,000 $460,000
3.4 Highgate Lift Station Elimination $25,000 $200,000 $225,000
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) $50,000 $210,000 $260,000
5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) $30,000 $154,000 $184,000
7.1 Telemetry and Data Logging System Replacement $50,000 $250,000 $150,000 $150,000 $75,000 $675,000
PRIORITY C PROJECTS
2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) $50,000 $150,000 $200,000
2.9 Honeydew Lift Station Elimination $20,000 $50,000 $200,000 $300,000 $570,000
3.5 East Kermydale Interceptor $50,000 $200,000 $500,000 $750,000
3.7 Kermydale Lakefront Sewer System Study $25,000 $25,000 $50,000
3.8 Park Avenue Interceptor $63,643 $110,000 $390,000 $500,000
4.3 Talbot Crest Lift Station Elimination $50,000 $150,000 $150,000 $350,000
NOTE: Project cost estimates are In 1990 dollars
TABLE VIII.38: COST BREAKDOWN FOR PROPOSED IMPROVEMENTS
PROJECT PROPOSED CAPITAL IMPROVEMENTS CARRY ANNUAL CASH FLOW TOTAL
NUMBER FORWARD 1991 1992 1993 1994 1995 1996-2010 COST
PRIORITY D PROJECTS
1.6 Sunset Lift Station Elimination 510,000 $40,000 $50,000
1.7 Devil's Elbow Lift Station Elimination 310,000 $40,000 $50,000
3.6 Azalea Lane Lift Station Elimination $10,000 $40,000 $50,000
4.4 SW 34th Street Interceptor Replacement $75,000 $375,000 $450,000
4.5 East Valley Lift Station Rehabilitation $25,000 $75,000 $100,000
PRIORITY E PROJECTS
2.6 Central Renton Sewer Replacement,Phase III(Ilouser/Factory) $50,000 $150,000 $200,000
3.9 Boeing Lift Station Elimination $50,000 $50,000
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) $97,000 $25,000 $225,000. $250,000
4.6 Lind Avenue Lift Station Rehabilitation $20,000 $20,000
4.7 Talbot Road Interceptor Replacement $100,000 $650,000 $750,000
PRIORITY F PROJECTS
1.8 Misty Cove and Baxter Lift Station Rehabilitation
$450,000 $450,000
1.9 Denny's Lift Station Rehabilitation $70,000 $70,000
2.10 Union 600 Lift Station Elimination •
3180,000 $180,000
00 2.11 Falcon Ridge lift Station Elimination $700,000 $700,000
v 2.12 NE 7th Place Sewer Replacement $110,000 $110,000
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) - $300,000 $300,000 --
5.2 Renton Avenue Interceptor $1,500,000 $1,500,000
5.3 Harlington School Lift Station Elimination
$50,000 $50,000
5.4 Scars Lift Station Replacement
$350,000 $350,000
5.5 Airport Lift Station Rehabilitation
S20,000 S20,000
6.1 Black River Interceptor
$1,320,000 $1,320,000
PRIORITY G PROJECTS
2.13 South Highlands Sewer Collection System Replacement $6,800,000 $6,800,000
3.12 North Highlands Sewer Collection System Replacement
5.6 West Renton Sewer Collection System Replacement $3,300,000 . $5,800,000
Y eP $3,300,000 $3,300,000
4.80 Scenic Hills Sewer Collection System Replacement $3,630,000 $3,630,000
4.9 Talbot Hill Sewer Collection System Replacement $4,120,000 $4,120,000
ANNUAL PROJECTS
7.2 Infiltration and Inflow Testing and Monitoring $80,000 $80,000 $80,000 $80,000 $80,000 $80,000 $1,200,000 $1,600,000 ?1
7.3 Existing Sewer Grouting $100,000 $100,000 $100,000 $100,000 $100,000 $1,500,000 $2,000,000 g
7.4 Miscellaneous Sewer Replacement $200,000 $200,000 $200,000 $200,000 $200,000 $4,500,000 $5,500,000 P..
I:1
TOTAL CIP COSTS PER YEAR $2,025,643 $3,800,500 $5,305,000 $3,465,000 $2,945,000 $2,195,000 $37,300,000 $55,010,500
CITY ESTIMATED SHARE OF CIP COSTS $2,464,477 $3,278,781 $2,085,707 $1,469,137 $1,559,138 $33,038,500 $43,895,740
NOTE: Project cost estimates are in 1990 dollars
CHAPTER EIGHT
b. Revenue Requirements
For purposes of the financial analysis, the estimated revenue requirements for the
next five years (1991 to 1995) were based on the 1990 operating budget--which
reflects the new organization with additions for planned new services and
inflation. Customer service growth was assumed to occur at 2% per year, which
increases revenues from rate collection by 2%. The capital budgets were based
on the five-year CIP recommended in this Plan.
In addition to reflecting the new organization, the 1990 operating budget was used
as a base rather than actual historical expenditures, because the old organization's
cost allocations, were imprecise and based on a time-reporting system which was
unreliable. The transition's effect, however, has not been completely reflected in
the currently available financial information and will not be completely reflected
until the City obtains the first nine months of 401 and 421 fund operations of
1991.
D. CIP COSTS AND REVENUES
1. Capital Improvement Plan Costs
The recommended CIP presented in this Plan consists of improvements necessary to serve
the projected service area's population at saturation at the lowest reasonable cost.
Consequently, the CIP's recommendations are based on saturation conditions and will be
implemented as they are needed. The project costs listed here are intended for budgetary
purposes only, because they are based on current construction costs and should be
adjusted for actual inflation depending upon the actual construction date. The cost for the
recommended CIP in the City's budget process is shown in the annual budget in the 421
account.
The costs for all of the improvements have been estimated, based on current information
available. It should be reiterated that changes in system flow rates, system growth,
financial policies, and regulatory requirements all contribute to adjustments in long-range
planning. We recommend that financial goals be evaluated every five years, and that a
detailed cash flow analysis be conducted annually.
TABLES VIII - 2, 3A & 3B present the estimated costs of the capital improvement
program as recommended in this Comprehensive Plan. TABLE VIII-2 summarizes these
annual costs of the CIP program showing the total project cost (current and inflated
dollars) and the City's share of the program costs (current and inflated). TABLE VIII-2
also presents the City's share as estimated in the Rates Management Analysis
accomplished during 1989. FIGURE 11 graphically presents the information provided
8-8
ii
Financial Analysis
in TABLE VIII-2.
TABLES VIII-3A & 3B show an annual breakdown for each capital improvement project
using current dollars. These estimates of funding responsibilities are based on the
financial policies presented in Chapter 3.
Debt service is.a major cost of operating a wastewater utility. The majority of funding
for the CIP has historically been provided through revenue bond sales, which means the
utility borrows money from inventors while agreeing to repay those investors part of their
debt with interest each year. This debt service (principal and interest) is funded from the
401 account (Utility Operations and Maintenance) because the debt service is a high
priority lien on the revenues of the utility. Specific restrictions are contained in the bond
covenants which restrict financial procedures of the utility. For example, the wastewater
utility is required to set rates that must exceed its costs for operating and maintaining the •
system, cover payment of the debt service and cover an additional specified percentage
of debt service.
2. Revenue Sources for CIP
a. City Share
In the financial analysis, the new debt service was calculated as the amount
necessary to fund the City's share of inflated CIP costs. The analysis also
indicates how this additional debt service affects the operating costs identified in
the Rates Management Analysis (RMA). That adjustment to the RMA will
determine the rate adjustments necessary to accomplish the CIP. Those costs will
be recovered from customers based on their specific degree of benefit.
The City's share of funding originates from three different sources; Revenue
Bonds, General Obligation Bonds and the Public Works Trust Fund. These
funding sources are discussed in detail below.
1) Revenue Bonds
Revenue bonds are issued and sold by the City when large amounts of
money are needed to build general purpose capital improvements that
benefit the City as a whole. The City, like other municipalities, is capable
of issuing tax-exempt bonds. The principal and interest payments for such
bonds are repaid from general revenues, connection charges, assessments
and interest earned on investments. In order to qualify to sell revenue
bonds, the City must show that its net operating income (gross income less
expenses) is equal to or greater than 1.3 times the annual principal and
8-9
CHAPTER EIGHT
interest due for all outstanding bonded indebtedness. The 1.3 factor is
commonly referred to as the "coverage factor."
2) General Obligation Bonds
The City has the authority to levy a tax (subject to a vote of the people)
that could be used to pay principal and interest costs of a general
obligation bond issue. The City has not used this means of revenue
generation for the wastewater utility and does not plan to unless a serious
disaster occurs that requires massive improvements and/or replacements
beyond the City's ability to fund it through other sources.
3) Public Works Trust Fund Loans
Low-interest rate loans are available from the state for replacement of
existing sewer system facilities. Interest rates vary from a low of 1% to
a high of 3% depending upon the City's matching share. It is emphasized
that these low interest rate loans are for replacements only and can not be
used for accommodating growth. These loans can be utilized effectively
for replacements in the Central Business District (CBD) and other fully
developed areas of the City.
b. Other Revenue Sources For CIP
This section presents the anticipated funding for the CIP from sources other than
rates revenue. Five funding sources are identified and these are discussed in more
detail below.
1) Grants
Federal and state loan and grant programs are available for wastewater
capital improvement projects. These programs are primarily designed to
fund improvements that upgrade wastewater treatment facilities in order to
comply with Federal Clean Water Act (PL92-500). With budget cutbacks
at both the federal and state level, the possibility of receiving government
funding for a portion of the recommended improvements at this time is
remote. Should additional funds be made available, the City should
explore the feasibility of obtaining funds from these sources.
8-10
Financial Analysis
The Centennial Clean Water Fund is an example of state grant funding
which is currently available. This grant fund's highest priority is to
eliminate public health emergencies and secondly, to improve water
quality. The City should continue to pursue these funds.
2) Municipality of Metropolitan Seattle (METRO)
METRO funds are available for the construction of interceptors and local
service extensions if the investment can be justified. Currently METRO
limits its investment to projects where the amortized capital cost of the
project can be recovered through METRO fees collected from the
residential customer, or equivalent, that are served by the extension at the
time of project completion. Based on this policy, METRO could construct
the May Valley Interceptor and other improvements.
3) LID (Local Improvement District) Assessments
LID assessment income is paid to the City from assessments levied against
specific properties which have benefitted from improvements in a defined
area. Typically, Local Improvements District's (LIDs) are formed by the
City at the written request (by petition) of property owners within a
specific area of the City. Upon receipt of a sufficient number of signatures
on petitions, a local improvements area is defined and improvements are
designed for it. Each separate property in the LID is assessed in
accordance with the special benefits the property receives from the sewer
system improvements. Generally, it is the policy of the City to assess the
benefitted properties 100 percent of the cost of the improvements plus the
general facilities and sewer connection charges.
LID projects may be divided into two categories.
a) Improvements of Local Interest
If necessary, specific problems, such as excessive septic tank
failures, can be corrected through an LID. If not necessary, these
projects can be postponed until a later date when the area needs or
desires it.
8-11
� I
CHAPTER EIGHT
b) Improvements of Regional Interest
These project are beneficial to an area larger than an LID and are
initiated by the City. ' While LID funding would help, the project
is of such importance that a lack of LID should not delay it. If an
LID cannot be formed, additional funding from other sources
(including the City) may be necessary.
4) Developers --
City policy requires that all developers/property owners take financial
responsibility for the necessary improvements before their development
benefits from them. This responsibility may be satisfied in one of the
following ways. In all cases, developer/property owners should be
required to pay for the costs to the extent their property benefits from the
facility installed (their fair share).
a. If the utilities necessary are already installed, the
developer/property owner will reimburse the party (city or
private) that installed the facility through a latecomer
agreement or special assessment district.
b. If the utilities necessary are not installed, then the
developer/property owner must extend or make
improvements to the facilities following routes that comply
with the City's Comprehensive Sewer Plan. If the plan is
not definitive for thatarea, then the facilities will be
extended and installed in a manner that best serves the City
of Renton's citizens as determined by the utility system
manager.
If the facilities installed potentially benefit other properties, a latecomer's
agreement may be requested. If the facility required by the City is
determined by City Council to be significantly more expensive because of
oversizing or routing requirements, then the Council may agree that the
City participate.
If a City capital improvement project is being planned, designed or
constructed, developer/property owners could choose to participate
financially in the City's project rather than make the improvements
themselves.
5) Other
8-12
Financial Analysis
This category of funding responsibility is primarily for participation by
other municipalities, such as adjacent cities or districts. Negotiations need
to be accomplished to finalize funding responsibilities before annual
adjustments to the CIP and rate increases.
c. Contingency Revenue Plan
If the funding from other sources does not happen as 'anticipated, or on the
schedule anticipated, then the City should adjust this plan's CIP. Alternative
adjustments available to the City are as follows:
Reduce the scope and magnitude of the improvements with corresponding
reductions in cost,
- Defer that portion of the improvements necessary for the benefit of others
until the funding is obtained,
Proceed with the CIP as recommended in this plan and finance the other
beneficiary's share with the provision that these' other costs should be
recovered including interest costs.
It is critical to implementation of the CIP that these funds'be obtained from other
funding sources. The level of funding from other sources is based on the current
perceived degree of benefit from each project; this may change based on the
actual degree of benefit assessed at the time the project is planned to begin.
E. FINANCIAL ANALYSIS
The City has control of only approximately 40% of the total wastewater,utility budget; METRO
charges are responsible for approximately 60% of the total budget. The City's major source of
revenue is from sewer collection charges from its customers. Theses charges provide the
necessary revenue for the operation and maintenance of existing sewer facilities and for the
City's share of the CIP. The financial analysis, summarized in TABLE VIII-1 (page 8-4),
illustrates that the City must raise its sewer collection charges by 64.4% over the next four years.
This is equivalent to an average annual rate increase of approximately 13.2% per year. However,
the same financial analysis also illustrates that these rate increases are not uniform but require
a greater percentage increase in 1992 (18.1%) then taper off to a smaller percentage increase in
1995 (8.8%).
The rate increases depend on several factors which can change. These factors are summarized
below:
8-13
CHAPTER EIGHT
1. The customer base for the City is forecast to grow at an annual rate of 2% over
the next five years. If this. growth rate is greater than 2%, adjustments to sewer
collection rates may be less than projected; however, if the customer base
increases at less than 2% per year, then adjustment to these sewer collection rates
will lead to an increase above what is shown in TABLE VIII-1.
2. A significant portion of the wastewater utility's budget cover operations and
maintenance personnel costs. If recommended additions to the staff do not occur,
then the rate increases shown in TABLE VIII-1 could be reduced. The cost
savings would be offset, however, by the consequences of having inadequate and
unqualified personnel; the wastewater utility would not function efficiently and
would not provide adequate services to its customers.
3. The financial analysis assumes the CIP in this Plan will be implemented. If it is
not, whether deliberately or unintentionally, then the required rate increases
presented in this financial analysis will change. It should be noted that delaying
the implementation of this CIP may initially result in lower rate increases;
however, if facilities fail, then unplanned and costly repairs will be needed, which
often results in excessively high rate increases in the future.
Currently, the City Council and wastewater utility are implementing financial reviews through
the annual budget process. These reviews allow the wastewater utility access to the latest and
most accurate financial date, allowing more informed decisions. The wastewater utility will
continue to work with the City Council to recommend the necessary rate increase needed to
maintain and improve the system in order to provide the residents of the City with effective, safe,
and reliable sewage disposal service.
8-14
APPENDIX A
SEWAGE LIFT STATION
DATA SHEET
1
•
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Airport
LOCATION West Perimeter Road/Airport
CONSTRUCTED 1986 STATUS Active
REHABILITATED PROJECT S-424
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & 1_ S & L
MODEL NUMBER 4B2B 4B2B
FLOW RATE 100 100
T.D.H 54 54
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K213DP6752A-TA 5K213DP6752A-TA
HORSE POWER 7.5 7.5
VOLTAGE 230/460 230/460
R.P.MJPHASE 1750/3 1750/3
FORCE MAIN DATA
LENGTH 195 LF SIZE 4" DI
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless
Design) with fiberglass enclosure
1_ EMERGENCY POWER CONNECTION NO
HEATING Yes CONTROL Floats
VENTILATION Yes TELEMETRY Yes
I
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Azalea Lane
LOCATION 2310 Aberdeen Ave NE
CONSTRUCTED 1979 STATUS Active
REHABILITATED PROJECT S-271
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4B2B 4B2B
FLOW RATE
100-150 100-150
T.D.H 44 44
MOTOR NUMBER 1 2
MANUFACTURER S & L
S & L
MODEL NUMBER 11954-XX2978 11954-XX2978
HORSE POWER 7.5 7.5
VOLTAGE 2nn
200
R.P.M„PHASE 1766/3 1766/3
FORCE MAIN DATA
LENGTH 1250 LF SIZE 6" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless
Design) with fiberglass enclosure
EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Float
VENTILATION Yes TELEMETRY Yes
•
•
SEWAGE LIFT STATION DATA SHEET
UPI' STATION NAME Baxter
LOCATION 5015 Lake Washington Blvd. N.
CONSTRUCTED 1974 STATUS Active
REHABILITATED PROJECT S-163
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER A & C A & C
MODEL NUMBER NSWV
NSWV
FLOW RATE 400 400
T.D.H 23 23
Is
MOTOR NUMBER 1 2
MANUFACTURER A & C A & C
MODEL NUMBER 400 400
HORSE POWER 3 3
VOLTAGE 230/460 230/460
R.P.MJPHASE 865/3 865/3
FORCE MAIN DATA
LENGTH 168 LF
SIZE 8 CI
LIFT STATION CONSTRUCTION •
DESCRIPTION Recessed wet well mounted lift station
EMERGENCY POWER CONNECTION Yes
HEATING No CONTROL Floats
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Roe i nq
LOCATION N. 8th Street & Park Ave. N.
CONSTRUCTED STATUS Active
REHABILITATED PROJECT
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Fairbank-Morris Fairbank-Morris
MODEL NUMBER K2D39148 K2D39149
FLOW RATE 400 400
T.D.II 30 30
MOTOR NUMBER 1 2
MANUFACTURER Fairbank-Morris Fairbank-Morris
MODEL NUMBER KZKU1 KZKU1
HORSE POWER 7,5 7.5
VOLTAGE 2(18-230/460 208-230/460
R.P.MJPIIASE
860/3 860/3
FORCE MAIN DATA
LENGTH SIZE 6
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well/dry well lift station
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Bubbler
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Cottonwood
LOCATION 2003 Maple Valley Highway
CONSTRUCTED STATUS Active
REHABILITATED PROJECT
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Uniclosed Uniclosed
} MODEL NUMBER 2827440 2827440
FLOW RATE 300 300
T.D.H 23
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K627XH202A 5K627XH202A
HORSE POWER 5 5
VOLTAGE P30/460 230/460
R.P.MJPHASE 1150/3 1150/3
FORCE MAIN DATA
LENGTH
SIZE 6"
LIFT STATION CONSTRUCTION
DESCRIPTION Recessed wet well mounted lift station with
overflow bypass to river.
EMERGENCY POWER CONNECTION NO
HEATING No CONTROL Fl oats
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Denny's
LOCATION 4750 Lake Washington Blvd.
CONSTRUCTED 1983 STATUS Active
REHABILITATED PROJECT S-339
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Paco Paco
MODEL NUMBER 470 470
FLOW RATE 100 100
T.D.I-I 35 35
MOTOR NUMBER 1 2
MANUFACTURER Cascade Cascade
MODEL NUMBER 5K184DL20239A 5K184DL20239A
HORSE POWER 5 5
VOLTAGE 208-230/460 208-230/460
R.P.MJPHASE 1735/3 1735/3 -
FORCE MAIN DATA
LENGTH 485 LF SIZE 4" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless
Design) with fiberglass enclosure.
EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Fl oats
VENTILATION Yes
TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
• LIFT STATION NAME
Devil 's Elbow
LOCATION 120th Place SW
CONSTRUCTED 1985 STATUS Active
REHABILITATED PROJECT S-296
PUMP AND MOTOR DATA
• PUMP NUMBER 1 2
i
MANUFACTURER Clow-Yeomans Clow-Yeomans
MODEL NUMBER 4312-6260 4312-6260
FLOW RATE 400 400
T.D.II
157 157
u'.
MOTOR NUMBER 1 2
MANUFACTURER Baldor Baldor
MODEL NUMBER CM2539T CM2539T
HORSE POWER 40 40
VOLTAGE 230/460 230/460
R.P.MJPH1'.SE 1760/3
1760/3
FORCE MAIN DATA
LENGTH 2150 LF SIZE 8" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station with fiberglass
walkin building.
EMERGENCY POWER CONNECTION
HEATING Yes CONTROL Fl oats
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Earl ington School
LOCATION 8055 S. Langston
CONSTRUCTED 1969 STATUS Active
REHABILITATED PROJECT S-137
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4B3 4B3
FLOW RATE 150 150
T.D.H 30 30
MOTOR NUMBER 1 2
MANUFACTURER
MODEL NUMBER
HORSE POWER 5 5
VOLTAGE 230/460 230/460
R.P.MJPI-IASE 860/3 860/3
FORCE MAIN DATA
LENGTH 637 LF SIZE 6" CI.
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well/dry well lift station (Smith & Loveless
Design) with overflow bypass.
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Bubbler
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME East Valley
LOCATION 3400 East Valley Road
CONSTRUCTED 1977
STATUS Active
REHABILITATED
PROJECT S-200
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Cornell Cornell
MODEL NUMBER 4NNTRHVM5-6 4NNTRHVM5-6
FLOW RATE 350 350
T.D.H 22 22
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER as1222azauL, 5K6227XH2004A
HORSE POWER 5 ` 5
VOLTAGE 230/460 230/460
R.P.M./PHASE 1150/3 1150/3
FORCE MAIN DATA
LENGTH 80 LF SIZE 8" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well/dry well lift station
EMERGENCY POWER CONNECTION NO
HEATING No CONTROL Bubbler
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Falcon Ridge
LOCATION 2456 SE 8th St.
CONSTRUCTED 1981 STATUS Active
REHABILITATED PROJECT S-303
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4B2B 4B2B
FLOW RATE
100 100
T.D.H 101 101
MOTOR NUMBER 1 2
MANUFACTURER S & L S & L '
MODEL NUMBER 16055-XX2980 16055-XX2980
HORSE POWER 15 15
VOLTAGE 230/460 230/460
R.P.MJPHASE 1800 1800/3
FORCE MAIN DATA
LENGTH
3217 LF SIZE 4" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless
Design) with fiberglass enclosure.
EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Fl oats
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Highgate
LOCATION 1824 NE 20th St.
CONSTRUCTED 1979 STATUS Active
.REHABILITATED
PROJECT S-249
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4828 4628
FLOW RATE 100 100
T.D.H 35 35
MOTOR NUMBER 1 2
MANUFACTURER Marathon Marathon
MODEL NUMBER JA-215TBDR7092BD-WCW
HORSE POWER 3 3
VOLTAGE 230 230
R.P.MJPHASE 1170/1 1170/1
FORCE MAIN DATA
LENGTH 658 LF SIZE 4" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless
Design) with fiberglass enclosure.
i
EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Floats
VENTILATION
Yes TELEMETRY Ye s
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Honey Creek
LOCATION 3501 NE 17th Place
CONSTRUCTED 1969 STATUS Standby
REHABILITATED • PROJECT S-113
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Paco
MODEL NUMBER
FLOW RATE 100
T.D.H 58
MOTOR NUMBER 1 2
MANUFACTURER Century
MODEL NUMBER 6-324474-01
HORSE POWER 7.5
VOLTAGE 230
R.P.MJPHASE 1750/1
FORCE MAIN DATA
LENGTH 393 LF
SIZE 4" CI
LIFT' STATION CONSTRUCTION
DESCRIPTION Recessed wet well mounted lift station with
emergency bypass.
EMERGENCY POWER CONNECTION No
HEATING NO CONTROL Fl oats
VENTILATION NO TELEME'T'RY YES
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Honey Dew
LOCATION Union Ave NE near NE 7th St.
CONSTRUCTED 1984
STATUS Active
REHABILITATED
PROJECT S-331
PUMP AND MOTOR DATA
1
PUMP NUMBER 1 2
MANUFACTURER ENPO ENPO
MODEL NUMBER 4DNDL-SS 4DNDL-SS
FLOW RATE 100 100
T.D.H
15 15
MOTOR NUMBER 1 2
MANUFACTURER Reliance Reliance
MODEL NUMBER
HORSE POWER 9 2
VOLTAGE 230 230
R.P.MJPI-iASE- 1160/3 1160/3
FORCE MAIN DATA
LENGTH 15 LF SIZE 4" DI
LIFT STATION CONSTRUCTION
DESCRIPTION Duel submersible non-clo ging lift station.
EMERGENCY POWER CONNECTION No
HEATING �Ilo CONTROL Floats
VENTILATION TELEMETRY Yes
SEWAGE LII F STATION DATA SHEET
LIFT STATION NAME Lake Washington Beach
LOCATION 1101 Lake Washington Blvd. N.
CONSTRUCTED
STATUS Active
REHABILITATED PROJECT S-314
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4B2A 4B2A
FLOW RATE 125 125
T.D.H 25 25
MOTOR NUMBER 1 2
MANUFACTURER
MODEL NUMBER
HORSE POWER 3 3
VOLTAGE 340/460 230/460
R.P.M/PHASE
900/3 900/3
FORCE MAIN DATA
LENGTH
SIZE 4"
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well/dry well lift station (Smith & Loveless
Design)
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Bubbler
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Lake Washington Flush Station
LOCATION 2727 Mountain View Ave. N.
CONSTRUCTED 1972 STATUS Active
REHABILITATED PROJECT S-158
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Paco
MODEL NUMBER 470-11
FLOW RATE 400
T.D.H 6.5
MOTOR NUMBER 1 2
MANUFACTURER Paco
MODEL NUMBER
HORSE POWER 1.5
VOLTAGE 230
R.P.MJPHASE 1150/3
FORCE MAIN DATA
LENGTH SIZE 8" CI
LIFT STATION CONSTRUCTION
DESCRIPTION Submersible non-clogging pump to pump lake
water into gravity sewer for flushing purposes.
•
EMERGENCY POWER CONNECTION No
HEATING No CONTROL
VENTILATION No TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Lake Washington No. 2
LOCATION 3901 Lake Wash. Blvd. N.
CONSTRUCTED 1972 STATUS Active
REHABILITATED PROJECT S-158
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & I S & L
MODEL NUMBER 4B2B 4626
FLOW RATE 400 400
T.D.H 31 31 •
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K6225XH2500A 5K6225XH2500A
HORSE POWER 7.5 7.5
VOLTAGE 230/460 230/460
R.P.MJPHASE 1150/3 1150/3
FORCE MAIN DATA
LENGTH 192, IF SIZE 6" CI
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless
Design) with fiberglass enclosure.
EMERGENCY POWER CONNECTION Yes •
HEATING Yes CONTROL Floats
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Lind Avenue
LOCATION 1801 Lind Ave. S.
CONSTRUCTED 1978 STATUS Active
REHABILITATED 1983 PROJECT S-229
PUMP AND MOTOR DATA
PUMP NUMBER 1 2 3
MANUFACTURER Hydr-O-Matic Hydro-O-Matic Hydro-O-Matic
MODEL NUMBER RV-6A RV-6A • .LV-6A
,
FLOW RATE 780 780 780
T.D.H 13 13 13
4_
1
i,
` MOTOR NUMBER 1
2 3
MANUFACTURER US Electric US Electric US Electric
i
MODEL NUMBER AV AV AV
i HORSE POWER 5 5 5
VOLTAGE 230/460 230/460 • 230/460
L. R.P.MJPHASE R65/3 865/3 865/3
t FORCE MAIN DATA
4_
LENGTH g
I SIZE
L_
LIFT STATION CONSTRUCTION
w
i DESCRIPTION Wet well/dry well lift station (Hydronix Design)
EMERGENCY POWER CONNECTION Yes
'� HEATING Yes
CONTROL Bubbler
L VENTILATION
Yes TELEMETRY Yes
1
L.
J
SEWAGE LVF STATION DATA SHEET
LIFT STATION NAME
Misty Cove
LOCATION 5025 Ripley Lane N.
CONSTRUCTED 1974' Active
STATUS
REHABILITATED PROJECT S-163
PUMP AND MOTOR DATA
PUMP NUMBER 1
2
MANUFACTURER A & C A & C
MODEL NUMBER NSWV NSWV
FLOW RATE 75 75
T.D.H 10 10
MOTOR NUMBER 1 2
MANUFACTURER A & C A & C
MODEL NUMBER 400 400
HORSE POWER 2 2
VOLTAGE 230/460 230/460
R.P.MJPHASE Rfin/3 860/3
FORCE MAIN DATA
LENGTH 3 LF SIZE 4" CI
LIFT STATION CONSTRUCTION
DESCRIPTION Recessed wet well mounted lift 'station.
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Floats
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Sears
LOCATION 321 Rainier Ave. S.
CONSTRUCTED —1959
STATUS Active
REHABILITATED
PROJECT S-24
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Wemco Wemco
MODEL NUMBER DVPL DVPL
FLOW RATE 200 200
T.D.H 30 30
MOTOR NUMBER
1 2
MANUFACTURER A & C A & C
MODEL NUMBER GV GV
HORSE POWER 5 5
VOLTAGE 220/440 220/440
R.P.MJPI-JASE % 1160/3 1160/3
t •
FORCE MAIN DATA
LENGTH 440 LF SIZE 6°
LIFT STATION CONSTRUCTION
DESCRIPTION Recessed wet well mounted lift station.
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Floats
VENTILATION _Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Summer Wind
LOCATION NE 23rd St.
CONSTRUCTED 1987 STATUS Active
REHABILITATED PROJECT S-444
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4C3B 4C3B
FLOW RATE 375 375
T.D.H 133 133
MOTOR NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 876167A-2 876293A-2
HORSE POWER 25 25
VOLTAGE 230/460 230/460
R.P.MJPHASE 1800/3 1800/3
FORCE MAIN DATA
LENGTH 1065 LF SIZE 6"
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless
Design) with fiberglass enclosure.
EMERGENCY POWER CONNECTION
HEATING Yes CONTROL Floats
VENTILATION Yes TELEMETRY Yes.
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Sunset
LOCATION NE Sunset Blvd and Union Ave NE
CONSTRUCTED 1963 STATUS Active
REHABILITATED 1975 PROJECT S-43
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
•
MODEL NUMBER 483 4B3
FLOW RATE 500 500
T.D.H 70 70
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K6235XH2500A 5K6235XH2500A
HORSE POWER 15 15
VOLTAGE 230/460 230/460
R.P.MJPHASE 1755/3 1755/3
1
FORCE MAIN DATA
LENGTH 2250 LF SIZE 6"
.` - LIFT STATION CONSTRUCTION
' DESCRIPTION Wet well/dry well lift station (Smith & Loveless
Design) with overflow bypass
EMERGENCY POWER CONNECTION NO
HEATING No CONTROL Bubbler
VENTILATION Yes TELEMETRY Yes
SEWAGE Lrvr STATION DATA SHEET
LIFT STATION NAME Talbot Crest
LOCATION 2515 Talbot Crest Dr. S.
CONSTRUCTED
1965 STATUS Active
REHABILITATED
PROJECT S-85
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER
MODEL NUMBER
FLOW RATE 50 50
T.D.Hi !
96.6 96.6
MOTOR NUMBER 1 2
MANUFACTURER Quincy Quincy ;
MODEL NUMBER 240-10 240-10
HORSE POWER 5 5
VOLTAGE 220/440 220/440
R.P.M./PHASE
1750/3 1750/3
FORCE MAIN DATA
LENGTH 525 LF SIZE 4"
LIFT STATION CONSTRUCTION
DESCRIPTION Duel pneumatic ejectors lift station (Smith &
Loveless Design) with 8" overflow bypass.
EMERGENCY POWER CONNECTION No
HEATING Yes CONTROL Electrodes
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Union 600
LOCATION NE 5th St. and Union Avene NE
CONSTRUCTED 1923 STATUS Active
REHABILITATED PROJECT S-338
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Usemco Usemco
MODEL NUMBER 470 470
FLOW RATE 100 100
T.D.II 24 24
MOTOR NUMBER 1 2
MANUFACTURER GE GE
• - MODEL NUMBER 5K49VG8151 5K145DL20972
HORSE POWER 2HP 2HP
VOLTAGE 208-230/460 208-230/460
R.P.MJPHASE 1750/3 1750/3
FORCE MAIN DATA
LENGTH 272 LF
SIZE 4" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless
^S
Design) with fiberglass enclosure.
EMERGENCY POWER CONNECTION Yes •
HEATING Yes CONTROL Floats
VENTILATION No TELEMETRY Yes
APPENDIX B
JOINT USE AGREEMENTS
1. Soos Creek Water and Sewer District
(formerly Cascade Sewer District).
2. King County Water District No. 90 (Apollo Elementary School)
3. School District No. 403 (Earlington Elementary School)
4. King County Water District No. 107
(Franchise Agreement
5. King County Water District No. 107
(Joint Use Agreement)
6. King County Water District No. 128
(Service Area Boundary Agreement)
7. City of Kent
(Joint Use Agreement)
8. Cascade Sewer District
(Service Area Agreement)
. CITY OF RENTON, WASHINGTON
RESOLUTION NO. 2269
WHEREAS the Cities of Bellevue, Issaquah and Renton acknowledge the
need for a long range planning to avoid disputes between the various cities as to future
annexations or extension of city services, and
WHEREAS the aforesaid cities anticipate that the establishment of spheres
of influence would assist in attaining that goal, and
WHEREAS the establishment of spheres of influence does not commit any
city financially or otherwise, and
WHEREAS the boundaries of the spheres of influence are negotiable at a
later date and are presently to be used only for long range purposes, and
WHEREAS it has been agreed by the cities that the northern boundary of
the Renton sphere of influence would be adjusted to incorporate the Renton School
District boundary, NOW THEREFORE
Pte*
THE CITY COUNCIL OF THE CITY OF RENTON, WASHINGTON DO
RESOLVE AS FOLLOWS:
SECTION I: The above recitals are found to be true and correct in all
respects.
r •
SECTION II: The City Council of the City of Renton does accept and agree
•
to utilize the sphere of influence as presented to the Council for the purpose stated
hereinabove except that the northern boundary of said sphere shall be adjusted to
incorporate the Renton School District Boundary.
PASSED BY THE CITY COUNCIL this 23rdiay of April, 1979.
•
ea tom/Q. _'a.4Z
Delores A. Mead, City Clerk
APPROVED BY THE MAYOR this23rdday of April, 1979.
Charles Delaurenti, Mayor
•
Approved as to form:
Lawrence J. Warren, City Attorney
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ACREENENT •
TT:IS AGRLE;Z.VT, gado and ontorcd into this 27th
day of
Ihrch, 1964, by and botwoon CASCADE SE.:Ut DISTRICT, a municipal corporation of
tho Stato of .Jashington, heroinaftor callod "DISTRICT', and the CITY OP RENTON,
a municipal corporation of the State of .:ashinpton, horeinaftef called "CITY",
:JI TNESSL' T11:
THAT ..LERLAS, the District and tho City are situated confiluously In
ging County, State of :rashington, and
.IIERLAS, the District has nrcpared.construction plans and called for
contract bids for construction of an intorcontor sower lane to extend from the
present sower system o o ratod by the District, within its boundaries, and to run
through certain portions of the City to colloction trunk sewer lines constructed
by the :lunicipality of Notronolitan Scattlo, and
r--
't11EREAS, certain areas horeinaftor dcscribod situated within the boundaries
of the City mAt' also bo served byuso of said interceptor line, thereby eliminating
r-
the necessity of the City constructing su:h trunk facilities, and
:lILRE,Z, the District is willing and able to construct and pay for the
costs of said lino and the City is willing,and desirous ru reimburse the District
for an agreed uron portion of said construction .osts, according to the tins and
conditions hereinafter set forth.
:IU::, i11F.REFORE, IT IS amDY : ..^.'aLIY CQ1'[WND ANA 1'.:PF1 D b) and between
the parties heroto, as follows:
1. That tho entire cunstruction cost of said interconto: line, acro? Inge
to the engineering plans therofors heretofore Prepared by 114 District and apprcwod
7.
by.tha City, shall bo paid by the District.
2. That said lino shall bo constructed chroul•. :ross certain a:;:,
within tho City 4.E Renton, Ling County, Jashington, dntcribcd as (Oil's,:
Tho following description located in ::ing°County, ':ashington,
describoJ the centerline route of the proposed int,:;en•or Sewer
Prem its point of dlschargo into the Trunk S- r' the Ammie:vitt!
• of : trnrAlit:.: ........r,. •'. the JM.►:.Y_ri 1:44. It' the ♦..
!Oa ... Ccurr
Rivor pipe line right-of-way, which is also the city limits of Renton:
Beginning at the intersection of the North line of the :tu 1/4 of Section
21, Township 23 North, Rango S East ::.?I. and the Northl4ertorly margin
of the City of Soattlo's .lorcor Island pipolino It/::, said intersection
also being North 39000'24" Uost 1112.45 foot from the northeast corner
of said Soc. 21; thence South 28023454" !lest along said 'lorthwesterly
margin 1.008.02 feet; thence South 61036'06" East nernendicular ;u iJ
Northwesterly margin 5.90 feet to the true noint of beginning; also
being existing Notro A.A. h-10-33;
l l) l..!nce •.ulh !S":1'S4" :est ''11.10 feel;
tient. .sun M" I4'ill" .:est 84.Sd feet;
11) f,cn:e Horth 1:°01111" lest 133.:10 foot;
14) 1i..:tce .li)rth 60°11'01" .lest 1,213.70 feet;
(S) Menem South 14''11'42" :est 321.90 feet;
(1) T1►tn:e S.inth 307'57" iost 426.92 feet;
(7) Mateo South.4U"52144" .:est 195.00 foot;
(8) Thence South 72°19'42" .:est 262.20 foot;
(9) Thencu South 48°08'23" lest 307.00 toot;
(10) Thence South 14°26'59" .lest 54,08 foot;
(11) Thence South 41°51'37" East 742.40 feet; r
(12) Thence South 47°41'00" Fait 762,73 foot)
(13Thence South 11°26'54" 'lost 603.91 foot;
(14) Thence South 11°03'08" .lost 104.00 feet.
Thu entire route of the interceptor sewer within the City of Renton,
the ceniorliric of uhieh isdescribed above, is located on casements
except the following, which are on Public Right of Hay:
City of Renton streets;
The most Southwosterly 105.00 foot of Course (9);
All of Course (10); •
The most Northwesterly 37.49 feet of Course (11).
The City shall grant to the District a permit for the construction, oneration
and maintenance of said lino, subject to tho terms and conditions of this
Agreement.
3. That said line shall be used, operated and maintained by the
District and by the City for service of their present and future customers for •
transforring sewage collectod by tho District and by tho City within their
•
respective territories for dolivory to the )lotro trunk lino and no payment or
service charge thorefor shall be required by oither of these parties one to the
other for tho privilege of such use, other than as hereinafter sot forth herein l
for reimbursemont of construction costs, maintenance and repairs.
4. That the City shall have the right to authorize connections to
said lino by property owners of property si•uatod within the boundaries of Che'.
City of Renton, King County, :lashington, doscribed as follows:
That portion of Soc. 21, Towle hJp 23 North, Range S
East II.M. lying South of the Cedar River and North
• of tho South lino of the Soattlo Coder River Pipeline R/11,
except tho east 1/2 of Southeast 1/4 and except the
Southonst 1/4 of Northeast 1/4 of said Section 21;
•
Also, that portion of the Easterly 1/2 of Sec. 20, •
Township 23 North, Rango S Oast U.M. from which the
• sanitary sowage is carried Bastorly or Southeasterly in
the future acrnss 116th Ave. S.C. and into snid Sec. 21
or into Soc. 28; Township 23 North, Range 5 East U.N.
scdcr such conal and conditions as the City any establish for making such connoc-
. tions. The City shall also have the right to authorize connections to said line
by property owners of property which may hereafter annex to the City, under the
sem terms and conditions Of provided herein for properties now situated within
the boundaries of the City.
-2-
•
S. du person, firm or corporation shall be granted a permit, or be author-
1rud to tap into, hook onto, or use said sower intorcentor line, has hereinabove
dvtcrll,ud, during a period of thirty (30) years from date hereof without first
paying unto the City, in addition to any and all other costs and charges made or
arsosavJ for such hnr,kun, tap, or use, an amount of not pas than $.013 net square
foot of area included In any such proportles tar which connections are allowed by
the city. All amounts received by the City shall be pard out by It 'inle the
District under the terms of this Agroeaont within sixty (60) days 'nor recelp{
thereof. Furthermore. In case any tap, hookup, or connection is made Into &t
such interceptor sewer, Without such paymont first having boon sada as hervinonovo
set forth, the City Council of the City of Ronton may remove, or cease to he
.
removed, such una'ithorl:od tap, hookup, or connectins, and all connettial ills
or pine locatod in the facility :i.ht-of-way, and disinae of unautLoritcd materials
so removed, without any liability whatsoever to any party.
It is expressly understood that the aforesaid minimum charge per squats
foot, (basod on the provisions of R.C.U. 35.92.025),shall not prevent the City from
adding or imposing such other roasonablo charge for collection and bookkeonlmg
sorvicos, includin!; taxes, if any, that may reasonably be incurred by the City,
in providing for the collection servico heroin undertaken for and on behalf of tie
District; it being stipulatod that the aforesaid per square foot rate is solely a
method of moasuromont of the amounts due and owing to the District for pronerties
allowed to connect and use said intorcontor lino facility.
G. Tha(as betwoon these parties, it is stipulated.that tho nronorlionate
share of costs of said intorcoptor lino, as located within the boundaries of the
City, Is approximately $60,000.00 and that it is the District's intent to bo
reimbursed by •the abutting property ownors for such costs. It is expressly agreed
and covonanted byand between the parties that the City does in no way warrant
payment of any such sun, or sumo, during the life of this Agreement, and that the
City's obligation hereunder shall be limited sololy and exclusively to the collec-
tion ul charges, asibnve stated, from property miters who wish to hook up and
connect to said interceptor sowor trunk line. No interest shall be charged the
City upon such sum, or any other sum, by a,o District, and the City's agency for
collection purposes on behalf of the District shall not impose in any way any
liability or other costs upon the City, and the District hereby agroos to hold the
City haruless from any liability relating to the costs of installation, or the
17
District's:.anJeJ indebtedness in connection therewith.
7. 'lhnt aalntenanco costs, repairs and oporation nocossarily incurred
1os weld lntorcoptor llho within the boundaries of the City shall be bornu on a
nrolInrtlonoto basis dotorminod on the same ratio as the numbor of usors served
by thn District boats to the numbor of users 'hived by the City using said inter- '
captor lino. Dumago to said interceptor line which may be cabsed bytho nogligonce
of olthor thoso parties, their agents or assigns, shall be repaired by the
• i
r'.aponsiblo party.
8. That ownership of said line shall remain in the District until the
expiration of a poriod of thirty (30) yours from date hereof or payment in full of
tho prosont bondod indobtednoss of the District or subsequent bonded indebtedness
incurred for the purpose of refinancing thereof shall have been paid in full,
whichovor event shall come first, or ..s otherwise provided by law. Thereafter,
the City shall be under no further obligation to collect or remit any other or
•
furthor sums to the District as reimbursement for construction costs and owner-
• 1
ship of said lino shall be jointly vested in the District and the City, with full
and complete right of use thoroof allowed to each party and with expenses of
mi.intonanco thereof continued upon the same proportionate bails as hereinabove
sat forth. .
D. In the event said lino shall become inadequate to serve the entire area
lying within the District and the City, prefcrouce shall ba given to t:o District
and its users and the City shall, as additional lines become available, divert
sewage collected within .the District into narallel and additional trunk line:,
which it Ls contemplated would then bo available as lines necessarily constructed
In developiaent of said properties to such extent.
Ili lSITNL'SS InCEREOF, the parties hereto have set their hands and seals this
77thday of March, 1964.
CASCADE SE'!ER nISTRICT ". ' /
it
~`rCl''airman 1
•
u tarn
C)rY OF 'E ncf
a 4 ,../'ev -.: -4r.
tr -- ' .
F.
air`r'�
aita�l
/:
- ,v....;•.�..
. r. .s:a.„:-....•.�.4. r-'-:r..
. .1. .•.I
•
STATE OF :;ASIIINGTON )
ss.
cowry OF ;:INC •
On this 27th day of (larch
Notary Public in an for the State,of Nashin1964, fton me,ore the undersi
sworn, Public
all appearedg duly coa►misslon�edodand
°° known to bo the Caira�an�d LL V. �IIDY and DIARIES N. DAYLf_SS, to
DISTRICT, a bo th pal conoSecretary, respectively, of CASCADE SEER
that exocuted the foregoing instrument,aandState
acknowledgedgthe, the sald instrument
to be the free and voluntary act and deed of said corporation, for the uses
and purposes therein mentioned, and on oath stated Oent
to execute the said instrument and that the seal affixed tisthercorpor�ate1ed
seal of said corporation.
:IITNESS my hand and official seal hereto affixod the day and
year in this certificate above written.
•
dr
a
'otary •u. c In an. or s ate
of ;lashington, residing at Renton
•
STATE OF UASIQNGTO;; )
COUNTY OF KING ) ss.
— this n'' . (' •�•r.
Onbthc in/an dayodho gMarch, 1964, before me, the undersigned, a
NotaryaPublicaC a e g.of ashington, duly ctimmissionod and
Y appeared and !MIMIC NELSON, to no known
to be the Mayor and City Clerk, rosnectivoly, of 111E CITY OP RENTON, a
municipal corporation of tho State of !1oshington, tho corporation that
oxecutod the forogoing instrumont and ncknowledred the scid instrunont
to be the free and voluntary act and d.jod or sa1j corporation, for the
uses and nurposes theroin mentioned, and on oath stated that they are
authorized to execute the said instrument and that the seal affixod is
the corporate seal of said corporatism.
;IITMSS my hand and official seal hereto affixod t!.e day and
year in this cortificato above written.
41/ ,! ct
otatp.pjblIC in ii,u •[sir thee 5taa
of Nashington, residloq rt Rai,ton
•
•
RATIFICATI0:1 OF AC,R:C;Lyr
The undersigned. being the principal owners of nropertlas
hereinabove described. situated within the boundaries of the City•ot
Renton /•
in consideration and recognition of the obligations incurred by
the City of Renton under the terns and conditions of the foregoing
•
Agreement, do hereby ratify and acknowledge the obligations thereof to
the extent that said Agreement affects our real pronorty hereinabove
described.
,
No do hereby acknowledge upon behalf of ourselves, our
heirs, executors and assigns that none of our said properties may be
connected to the sewer trunk main being constructed by Cascade Sower
District until payment has boon made to the City of Renton of such
connection and hook-up fees as may be established by the City, which
amount will include the $.013 obligation of the City to the District as
hereinabove described.
DATED this 724ay of March, 1964.
VIKING I:IVESTFENT CORPORATION •
Dy: ��e
Pesd ;
D
•
•
seas or•
•
•
•
R``-> dd� cc�� c�J
ARNE C. COEDECXE, in v $a11y and as
Attorney-in-Fact for Louise FI. Goedecke,
his wife
•
•
-6-
OA,n- //W/- 7/
•
AGREEMENT AND CONVEYANCE RE
p SEWER LINES AND APPURTENANCES
•THIS AGREEMENT made and entered into thiso?- day of April , 1971
p by and between the CITY OF RENTON, a municipal corporation of the second class under
IQ the laws and statutes of the State of Washington, hereinafter referred to as "City",
and RENTON SCHOOL DISTRICT N0. 403 hereinafter referred
to as " DEVELOPER I';
WITNESSETH:.
WHEREAS DEVELOPER is desirous of installing certain
sewer lines and appurtenances thereto at, near or within the herethbelo0 described
property and to connect same to the City's Sanitary Sewer System so that suchimprovements
will constitute an integral part thereof; and
WHEREAS no other property owners or users are presently available to share in
the cost and expense of construction of such,improvementa and the parties hereto having
ane
in mind the provisions and terms of Chapter 261 of the 1959 Sessions Laws, generally
referred to as a "Municipal Water and Sewer Facilities Act, (RCW 35.91.010 et aeq)"; and.
WHEREAS DEVELOPER is willing to pay all the costs
a,.
and expensesfor the installation of said improvements;
NOW THEREFORE, IT IS HEREBY AGREED AND COVENANTED BY AND BETWEEN THE AFORESAID •
L .
PARTIES AS FOLLOWS:
1. DEVELOPER hereby acknowledges and covenants'
that he is the owner of the following described property, to-wit:
See Schedule "A"
and DEVELOPER hereby agrees and covenants to cause to have
„ installed the following described improvements, to-wit:
f i i L,F. of s" concrete sanitary sewer main in Northeast 10th Street•and South-
east 116th Street between an existing sanitary sewer manhole at the intersection of
Anacortes Northeast and Northeast 10th Street anda point 1512 feet East of said intersection.
and such installation to be made in full compliance with all applicable codes and
regulations of the City of Renton. DEVELOPER further
covenants and warrants that all expenses and claims in connection with the construction
and installation of the aforesaid improvements, whether for labor or materials or both,
I/
have been or will be paid in full, all at . DEVELOPER expense,
i and DEVELOPER covenants and agrees to hold the City of
Renton harmless from any liability in connection therewith.
2. DEVELOPER further certifies that the total
M estimated cost of said construction as hereinabove specified will be in the sum of
$ 59,994.90 . Based on said total amount of cost, ?t.,XXdIXXCOa16KWXlfxd(OWlblf
p the cost 1:er front lineal foot (strike out the inapplicable cart) of said improvement
shell be employed to determine the prorate reimbursement to DEVELOPER
). by any owner of real estate, who did not contribute to the original cost of such
O improvement, and who subsequently wishes to tap into or hook unto or use said facilities,
\ ,
N which tap or hookup shall include connections to laterals or branches connecting thereto,
all subject to the laws and ordinances of the City of Renton and the provisions of this a
1
Agreement. It is hereby further agreed that in the event the total actual coat of
the aforedescribed improvement shall be different !rum that set forth hereinabove, then
this Agreement will be duly amended to set forth the total actual cost thereof.
3. It is hereby found and determined that the construction and installation of
said aforedescribed improvement is in the public interest and in furtherance of public
health and sanitation.
4. DEVELOPER hereby agrees and covenants to convey,
transfer and assign unto City all right, interest and title in and to said improvements
and all appurtenances and accessories thereto, free from any claim and encumbrance of
any party whomsoever; City agrees to accept and maintain said improvement as part of
its present sanitary sewer system upon approval thereof by the City Engineer and after
inspection of said construction. DEVELOPER further agrees and
covenants to execute and to deliver unto City any and all documents including Quit Claim 1
Deeds and Bills of Sales that may reasonably be necessary to fully vest title in the City
and to effectuate this conveyance and transfer. DEVELOPER further
. agrees and covenants to pay unto City such service or other charges as may be imposed
by the Ordinance of the City of Renton from time to time applicable to like users of 1
the same class.
5. City reserves the right, without affecting the validity or terms of this
Agreement, to make or cause to be made extensions to or additions of the above improvement -
and to allow service connections to be made to said extensions or additions, without
liability on the part of the City.
6. No person, firm or corporation shall be granted a permit or be authorized .
/ -
•
to tap into, hookup unto or use any such facilities or extensions thereof during the
period of 10 years from date hereof, without first paying unto City, in addition to
oily and all other costa, fees and charges made or assessed for each tap, hookup or use,
or for the sanitary sewer facilities constructed in connection therewith, the amount
required by the provisions of this contract. All amounts so received by the City shall
/ be paid out by it unto DEVELOPER under the terms of this agreement
ICS within sixty (60) days after receipt thereof. Furthermore, incase any tap, hookup or
vl
Q connection is made into any such contracted facility, without.such payment having been
'1 first made, the legislative body of the City may cause to have removed such unauthorized
). tap, hookup or connection, and all connecting tile or pipe or related accessories located
r in the facility of right of way, and dispose of such unauthorized material so removed,
1\ without any liability on the part of the City whatever. It is further agreed and
covenanted that upon expiration of the,!lerm of this agreement, to-wits 10 years
from date hereof, City shall be under no further obligation to collect or make any further
°j sums unto DEVELOPER
The decision of the City Engineer or his authorized representative in
determining or computing the amount due from any benefited owner who wishes to hookup or
tap unto such improvement, shall be final and conclusive in all respects.
6. It is further agreed and understood that the aforedescribed improvements
to be undertaken and paid for by DEVELOPER have been or are about
to be connected with the sanitary sewer system of the City, and upon such connection and
acceptance by the City through its legislative body, said extension and/or improvement
shall be and become a part of the municipal sanitary sewer system.
r,
7. This agreement shall be placed for record with the King County Auditor's
office immediately upon execution thereof and all costs of recording shall be the
responsibility of THE DEVELOPER
DATED thiso/cr '(.day of April / 1571
_ CITY OF RENTON, a MlI�I�Iicipal corporation
RENTON SCHOOL DISTRICT NO. 403
j 1
7
By V / { aalt
BY -�/ i �!J j �yl �
beererar
CITY CLERK y
_ 3
,
STATE OF WASHINGTON )
) ss
COUNTY OF KING )
1970
On this 27t1aay of February , inn, before me, the undersigned, a
Notary Public in and for the State of Washington, duly commissioned and sworn
personally appeared Barbara S. Lally and H. R. Johnson
to 6e known to be the President and Secretary , respectively,
of Renton School District No. 403 the corporation that executed the
foregoing instrument, and acknowledged the said instrument to be the free and
voluntary act and deed of said corporation, for the uses and purposes therein
mentioned, and on oath stated that authorized to execute the said
instrument• and that the seal affixed is the corporate seal of said corporation. ,
•
•
nS WITNESS my hand and official seal hereto affixed the day and year in
this certificate above written.
,,„..., .
Q N tory Public in and for the S e
0 of Washington, residing at Ren on,
STATE OF WASHINGTON )
) as
' COUNTY OF KING )
•
On thisz,.-Geday of April . ,1971before me, the undersigned, a
Notary Public in and for the State of Washington, duly commissioned and sworn
' personally appearedAvery Garrett & Helmie Nelsoico me known to be the _
individual described in and who executed the foregoing instrument, and acknowledged 1 '
to me that the signed and sealed the said instrument as a free and voluntary
act and deed for the uses and purposes therein mentioned.
WITNESS my hand and official seal hereto affixed the day and year in
this certificate above written. ��—r_
Lary Public in and for the State
f Washington, residing at Renton.
i/
• I
— 4 —
C
•
•
•
•
EXHIBIT "A" AG-1789-71
//
•
Renton School District -.Agreement & Convey. Sewer Lines
LEGAL DESCRIPTION
•
The northwest 1 of the Northwest ,'- of
nO the Northeast a of section 10, township
23 north range 5E.W.M., EXCEPT the north
•30 feet and the east 30 feet thereof con-
veyed to King County for road and EXCEPT
"" r6 the south 132 feet of the east 330 feet
thereof, and
The North z of the East of the Northeast
a of the Northwest 4 of section 10, town-
ship 23 north, range 5 E.W.M. , EXCEPT the .
north 30 feet for road and EXCEPT the north
275 feet of the west half thereof; and the
south-.f of the east z of the east z of the
northeast ,'- of the northwest a of section
10, township 23 north, range 5 E.W.M., EX-
CEPT the south 30 feet thereof for road and
EXCEPT the north 30 feet thereof, and
The south 530 feet of tract 6, Joseph
Y. Marshall 'Tracts, all situated in
the County of King, State of Washington. •
•
1 i. . • .,
AGREEMENT AND CONVEYANCE RE
SEWER LINES AND APPURTENANCES
I
THIS AGREEMENT made and entered into this,72,xe,day ofAorii 1971
I•
by and between the CITY OF RENTON, a municipal corporation of the second class under
' the laws and statutes of the State of Washington, hereinafter referred to as "City",
and Renton School District No. 403 hereinafter referred
toae " ".,
i• � WITNESSETH:
WHEREAS DEVELOPER is desirous of installing certain
i
sewer lines and appurtenances thereto at, near or within the herethbelog described
1
property and to connect same to the City's Sanitary Sewer System so that auchimprovements
N will constitute an integral part thereof; and
. WHEREAS no other property owners or users are presently available to share in
the coat and expense of construction of. such improvements and the parties hereto having
in mind the provisions and terms of Chapter 261 of the 1959 Sessions Laws, generally
referred to as a "Municipal Water and Sewer Facilities Act, (RW 35.91.010 et seq)"; and
WHEREAS DEVELOPER
La willing to pay all the costo
I I and expenseafor the installation of said improvements;
NCW THEREFORE, IT IS HEREBY AGREED AND COVENANTED BY AND BETWEEN THE AFORESAID
PARTIES AS FOLLWS:
1. DEVELOPER hereby acknowledges and covenan••±'
that he is the owner of the following described property, to-wit:
See Schedule "A"
and DEVELOPER hereby agrees and covenants to cause to have •
installed the following described improvements, to-wit:
Size In From To
An 8" sanitary sewer ...._
Langston Road 250 ft. northerly 78th Ave. So.
j
main 6 lift station of So. 134th St.
! 6" Cast Iron " /..:I " South 134th St.
Pressure Main •
6" C.I. Pressure S.l34th St. Langston Road 250 ft. east of
Main ' Langston Road
and such .inatallstion to be made in full compliance with all applicable codes and
regulations of the City of Renton. DEVELOPER further
•
. covenants and warrants that all expenses and claims in connection with the construction
•
•
I.- _ I -
and installation of the aforesaid improvements, whether for labor or materials or both,
have been or will be paid in full, all at DEVELOPER expense,
and DEVELOPER covenants and agrees to hold the City of
Renton harmless from any liability in connection therewith.
2. DEVELOPER further certifies that the total
estimated coat of said construction as hereinabove specified will be in the sum of
$ 28,660.18 . Based on said total amount of coat, / or
1 the cost per front lineal foot (strike out the inapplicable part) of said improvement
• shall be employed to determine the prorate reimbursement to DEVELOPER
cst by any owner of real estate, who did not contribute to the original coat of such
• improvement, and who subsequently wishes to tap into or hook unto or use said facilities,
N
• which tap or hookup shall include connections to laterals or branches connecting thereto,
all subject to the laws and ordinances of the City of Renton and the provisions of this
Agreement. It is hereby further agreed that in the event the total actual cost of
the aforedeecribed improvement shall be different from that set forth hereinabove, then
this Agreement will be duly amended to aef forth the total actual cost thereof,
3. It is hereby found and determined that the construction and installation of
said aforedeecribed improvement is in the public interest and in furtherance of public
health and sanitation.
4. DEVELOPER hereby agrees and covenants to convey,
transfer and assign unto City all right, interest and title in and to said improvements
and all appurtenances and accessories thereto, free from any claim and encumbrance of
any party whomsoever; City agrees to accept and maintain said improvement as part of
its present sanitary sewer system upon approval thereof by the City Engineer and after
inspection of said construction. DEVELOPER further agrees and
covenants to execute and to deliver unto City any and all documents including Quit Claim
Deeds and Bills of Sales that may reasonably be necessary to fully vest title in the City
and to effectuate this conveyance and transfer. DEVELOPER further
•
agrees and covenants to pay unto City such service or other charges as may be imposed
by the Ordinance of the City of Renton from time to time applicable to like users of
the same class. •
• 5. City reserves the right, without affecting the validity or terms of this
Agreement, to make or cause to be made extensions to or additions of the above improvement
and to allow service connections to be made to said extensions or additions, without
liability on the part of the City.
6. No person, firm or corporation shall be granted a permit or be authorized
- 2 -
i
to tap into, hookup unto or use any such facilities or extensions thereof during the
period of 5 years from date hereof, without first paying unto City, in addition to
any and all other costs, fees and charges made or aseeesed for each tap, hookup or use,
or for the sanitary sewer facilities constructed in connection therewith, the amount
required by the provisions of this contract. All amounts so received by the City shall
be paid out by it unto 'DEVELOPER under the terms of this agreement
within sixty (60) days after receipt thereof. Furthermore, incase any tap, hookup or
o connection is made into any such contracted facility, without such payment having been
Q, first made, the legislative body of the City may cause to have removed such unauthorized
CI tap, hookup or connection, and all connecting tile or pipe or related accessories located
in the facility of right of way, and dispose of such unauthorized material so removed,
without any liability on the part of the City whatever. It is further agreed and
covenanted that upon expiration of the term of this agreement, to—wit: 5 years
from date hereof, City shall be under no further obligation to collect or make any further
sums unto DEVELOPER
The decision of the City Engineer or his authorized representative in
determining or computing the amount due from any 'benefited owner who wishes to hookup or
tap unto such improvement, shall be final and conclusive in all respeeta.
6. It is further agreed and understood that the aforedescribed improvements
to be undertaken and paid for by DEVELOPER
have been or are about
to be connected with the sanitary sewer system of the City, and upon such connection and
acceptance by the City through its legislative body, said extension and/or improvement
shall be and become a part of the municipal sanitary sewer system.
7. This agreement shall be placed for record with the King County Auditor's
office immediately upon execution thereof and all coats of recording shall be the
responsibility of THE DEVELOPER
DATED this67en.0( day of April ,1971
CITY OF RENTON, a M icipal corporation
P P RENTON SCHOOL DISTRICT 0. 403
BY :(.L /l OP tel-Ce
Presrr •
By �f/J?rt G i77 �( h • a".„,• �C n t
Cary CLERK Secretary
— 3
•
•
•
STATE OF WASHINGTON )
es
COUNTY OF KING ) •
i I
•
On this.• day of , 1968, before me, the undersigned, a
Notary Public in and•for the State of Wash pg pen, duly commissioned and sworn
personally eppeaT th 'February xxand
to me known to be the and , respectivel;,
of Barbara S. Lally the elorpTerat3ithanakErt executed the
•• foregoing instrument, andp fledged the said ingtmumebtotjo be the free and
vo/uncebylatthetrttlide.4.ds-OFisottidlioorriolietion, for the uses and purposes therein
mentioned, and on oath stated that authorized to execute the said
• •inatrument and that the seal affixed is the corporate seal of said corporation.
they are
;i WITNESS my hand and official seal hereto affixed the day and year in
( • this certificate above written.
),(/e—,ek 0\C16.2 ViZe4e--Mr
otary Public in and for the -late
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of Washington, residing at Renton.
STATE Cr 4ASHINGTON )
) es
COUNTY OF KINGCC
) r
On thisc2/Kelday of (,/ , '%97J before me, the undersigned, a
Notary Public in and for the State f Washin ton, duly commissioned and sworn
.personally appearedaxa y4 44at��rQr" , to me known to be the
individual described in and who executed the foregoing instrument, and acknowlee2:d
to me thatZ:I /eiQ t*n . sepi . tkepsali ,instrumia4f as CL free and voluntary
act and deed for the usbs and purposes therein mentioned.
WITNESS my hand and official seal hereto affixed the day and year in
this certificate above written. l
40,
N tary Public in and for the State
f Washington, residing at Renton.
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/; CAG-1787-71
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EXHIBIT "A"
Renton School District — Agreement & Convey. Sewer Lines & Appurt.
All of Blocks 13, 15 and 16, together with that portion of Block
14 lying southerly of 78th Avenue South (Join Langston Road No. 3) of
Earlington Acre Tracts, according to the Plat recorded in volume 15 of
Plats, page 84, Records of King County; Washington.
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CAG-1787-71
i
AMENDMENT TO AGREEMENT
AND CONVEYANCE RE SEWER LINE i
Pursuant to the terms of an agreement and conveyance
for sewer line made and entered into between the City of Renton
and Renton School District No. 403, for the Earlington
Elementary School, paragraph 2, page 2 of that agreement
is hereby amended to substitute the total actual coat of the
N\ improvement in the amount of $ 43.251.97 , for the total
-0
{ estimated cost.
AParagraph 5, pages 2 and 3, is hereby amended to
(\ show a time period of 10 years for the present time period
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of 5 years. ,
4
All other terms and conditions of said Agreement
N
to remain in full force and effect.
CITY OF RENTON
A Municipal Corporation
By6-114/1 (/)HD/L -
Mayor
By �4c-1---))11�il -,
City cayvk , /
RENTON SCHOOL DISTRICT NO. 403
6,
Barbara Lally,1 y, Pres dant
Boa djoii i 'irectors
By A . 145.."
H.R. r. son, Secretary
Boar. . Directors
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STATE OF WASHINGTON )
) ma
COUNTY OF KING• )
On this day personally appeared before me
AVERY GARRCTT and NE:LMIL HLLSON, to ■• known to be the Mayor and
the City Cl•rk, _r.spectively, of the municipal corporation
• that ex•nut.d the within and foregoing instrument, and
ack"nowimdged said inetruaent to be the fres and voluntary
. act and deed .of said oox'poration, for the uses and purposes
therein 'mentioned., and on oath stated that they were authorized
to ex.cu.te said instruLent and that the seal affixed is the
corporate seal of said corporation.
Given under my hand and official seal this x2--2.-1.-
day
?--2_d(.,day of _._Ap�.l • 1971.'
7 • 1,
N tory "uhlic in and for the State
f Washington, residing at Renton
r6
STATE OF WASHINGTON )
) as
COUNTY OF KIHO )
On this day personally appeatred before we AMARA S.
LALLY and H. R. JOHNSON, to me known to he the President and
Secretary. respectively, of Renton School District No. 403.,
the stoney that executed the foregoing instrument, end acknow-
lodged said ,instrument to be the free and coluntary act and
deed of said agency, for the uses and purposes therein mentioned,
. and on oath 'stated that they are authorized to execute said
instrument.
Ivan under my hand and -official seal this
day of 1 ' --, 2270.
• zu fit/
xotar Public n and
Y for •
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Etats of Washington, real ing
in Renton.
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CITY OF RENTON, WASHINGTON
RESOLUTION NO. 2692
A RESOLUTION OF THE CITY OF RENTON, WASHINGTON,
ADOPTING UTILITY FRANCHISES
WHEREAS Water District No. 107 currently owns water mains
and sewer lines within the City of Renton rights-of-way, and
WHEREAS Water District No. 107 has applied to the City of
Renton for a water franchise and a sewer franchise to install,
construct, maintain, and operate water mains and sewer lines in
the City rights-of-way, and
WHEREAS the City Council has reviewed the franchise
agreements negotiated between City Staff and Water District No.
107 and finds them to be in acceptable form, now therefore,
THE CITY COUNCIL OF THE CITY OF RENTON, DO RESOLVE AS
FOLLOWS:
SECTION I: The findings, recitals and determinations are
hereby found to be true and correct in all respects.
SECTION II: The Utility Franchises for Water District No.
107 as they relate to water mains, a copy of which is attached
hereto as Exhibit "A" and incorporated by this reference, and
sewer lines, a copy of which is attached hereto as Exhibit "B"
and incorporated by this reference, are hereby approved and
adopted, subject to the laws and ordinances of the City of
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RESOLUTION NO. 2692
Renton, and the Mayor and City Clerk are hereby authorized to
sign the franchise agreements.
PASSED BY THE CITY OF RENTON this 2nd day of November,
1987. •
Maxine E. Motor, City Clerk
APPROVED BY THE MAYOR this 2nd day of November ,
1987. -
4'43LQy0,ta) .04-+ Ulf')ppnc'�.
Barbara Y. Shinpolch, Mayor
Approved as to form:
4.4#04,421,LePili,Lawrence J. Warr: City Attorney
CITY3:46/10/27/87/nd
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3-93SEE)
EXHIBIT "B" f OV IF, ;? 0 : :I '87
UTILITY FRANCHISE
THIS UTILITY FRANCHISE is given this f day of
, 1987, by the City of Renton, King County,
Washington, a municipal corporation ("Renton" or "Grantor" )
to .Ring County Water District No. 107, a municipal
corporation ( "District" or "Grantee") .
SECTION 1: RECITALS
0) 1 .01. The District has applied to Renton for a sewer
04 utility franchise- to install , construct, maintain and
operate sewer lines, including mains, lateral, appurtenances
OD
and side sewers along, under and across such city roads,
- streets, avenues, boulevards, alleys and public places
,'4 hereinafter called "rights-of-way", within the District's
,4 service area.
LD 1. 02. The Renton City Council ("Council" ) has reviewed
and considered such application for sewer utility franchise.
WHEREFORE, in consideration of the terms and conditions
herein, Renton hereby grants to the District a sewer utility
franchise as follows:
SECTION 2: SEWER UTILITY FRANCHISE
2.01. Renton, pursuant to Resolution No. , o26.90- duly
and ' regularly enacted by its Council on the dp„,.4day of
1987, hereby grants to the district and to its
( successors and assigns, for the term of twenty-five (25)
years from the date hereof, the right, privilege, authority
and franchise for itself, its successors and assigns, to
install, construct, maintain and operate sewer lines,
including mains, laterals , appurtenances, and side sewers
along, under and across 'such City rights-of-way, together
with allnecessary equipment of every sort necessary,
subject to all the terms and conditions herein.
2.02. This Utility franchise shall apply to those
• portions of the District's sewer lines and appurtenances
within the City of Renton's present rights-of-way as
referenced in paragraph 1.01 above.
CITY3: 50/10/28/87
E:7/11%18 #0729
RCC' F 13.00
CASHEL *y::+:13.00
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SECTION 3: GENERAL TERMS AND .CONDITIONS APPLICABLE TO THE
UTILITY FRANCHISE.
3. 02 Definitions :
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(a) Right-of-Way. The term "right-of-way" shall
be understood to include any and every Renton City road ,
street , . avenue , alley or other public place designated or
specified. in this franchise in, upon, under, over, across and
along which rights ' are, or are intended to be vested in the •
Grantee , its successors and assigns, under and by virtue of
this franchise.
(b) Director. The term "director" shall be the
City of Renton Di rectorPubli c Works.
- (c) Utility. The term "utility" shall be
understood to mean, as the context may require, either the
0) Grantee herein, or any other person, firm or corporation,
either public. or private, which may hold a franchise to
maintain and Operate similar facilities in, upon, under, over,
'across and along any of the public rights-of-way, or portions
4 'thereof , within the area specified.
4
..4 - .(d) Other Governing Body. The term "other
N governing body". shall . be understood to mean such public
ap official or other public board or body .as may have power and
jurisdiction over the rights-of-way and be legally vested with
jurisdiction and authority to permi t ' or regulate the
installation, maintenance of lines and other facilities , in,
upon, under, over, across and along the rights-of-way within
the specified area.
3. 02. Acceptance by Grantee of Terms and Conditions.
Grantee shall 'be deemed to have abandoned and forfeited all the
rights , privileges and authority hereby granted , unless within
thirty (30) 'days from the date hereof Grantee shall file with
the Council its written acceptance of this franchise, subject
to •all of the terms , conditions, stipulations and other
obligations herein contained and enclosed , and in case the
Grantee shall fail to do so within the time aforesaid , this
franchise shall be null and void and of no effect.
• 3. 03 Exclusive Franchise Unconstitutional . This
franchise shall not be deemed or held to be an exclusive
• franchise, and shall not in any manner prohibit the Council
from ' granting other and further franchises of any kind or
character that it may deem proper, in, upon, under, over,
across and- along any right-of-way within the area described
herein, and this franchise shall in no way prohibit or prevent
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the public from using any such rights-of-way or affect the
jurisdiction of Renton .over such rights-of-way or any part
thereof, or its power to make all necessary improvements ,
repairs or changes therein.
3. 04 Jurisdiction. . This document shall not be
construed by Grantee,. or any other person, persons or
corporations , at a warrant Of title or interest in City roads
or rights-of-way but is 'intended to• convey such rights-of-way
and interests only as to those roads and rights-of-way in which
the City has an actual interest.
3. 05 Regulation of Use and Control . The City granting
this franchise does' not waive any rights which it now has or
• may hereafter acquire with respect to City roads , rights-of-way
or other City property and this franchise shall not be
construed to deprive the City of any powers, rights or
privileges which it now has. or may hereafter acquire to
regulate the use of and to control the City roads,
rights-of-way and any other City property covered by this
franchise.
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3. 06 Vacation. If at any, time the City shall vacate
any City road , rights-of-way 'or other City property which is
subject to rights granted by this franchise, the City shall not
'4 be liable for any damages or loss to the Grantee by reason of
grai such vacation.
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U. 3, 07 Responsibility for Damages. The Grantee agrees
LD for itself, its successors and assigns, to indemnify and hold
the City harmless, its appointed and elected officials and
' employees from and against all loss or expense, including
attorney' s fees and costs arising out of any negligent act ,
error , or omission by the District , its agents or employees
related to this Franchise.
3. 08 Requirement of Construction Permits. The said
Grantee-, its successors or assigns , shall have the right and
authority to enter upon the City roads and rights-of-way
described herein for the purpose of constructing , extending ,
repairing or replacing , servicing and/or operating and
maintaining its lines and facilities and connecting the same
with consumer service lines , upon the condition that prior to
such .work within the City roads. or rights-of-way, the Grantee
shall first obtain the necessary permits approved by the
Director of Public Works.
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4_ Applications for said permits shall first be presented to
the Department of Public Works which may require copies of
plans, blueprints , cross-sections or such further detail of the
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work to be done as is, or may be required by ordinance in other
instances. Such work, whether .done by the Grantee , its
contractors or third parties 'connecting to the Grantee's lines
-- ' or facilities, shall include necessary paving , patching , '
grading and any other reasonable and necessary repair or
restoration to the pre-existing. City roads, rights-of-way and
shall be to the satisfaction . of the director.
All permits shall be applied for and given in the name of
the Grantee who' shall be held responsible for all work done
thereunder, . wlether the 'work done thereunder is by the forces
of the Grantee, its contractors or. by third parties connecting
to the lines or facilities of Grantee.
Before any work is performed under the permit , the
Grantee shall establish .two or more reference marks to all
monuments and markers .of every nature relating to subdivision,
plats, right-of-way 'and all , other_ surveys within the permitted
area . The reference points shall be so located that they will
not be disturbed during the .Grantee 's operation under the
(4 permit . The 'meth.od of referencing these monuments or other
points to be referenced shall _ be approved by the director
before placement. The replacement of all such monuments or
OD markers disturbed .during construction shall be made as
'4 expeditiously as conditions permit and as directed by the
1,4 director. The—cost of monuments or other markers lost ,
destroyed or disturbed and the expense of replacement by
OD approved monuments shall be borne by the Grantee.
Grantor shall be named as an additional obligee on
performance bonds required by the District for any work within
• the franchise area herein.
3. 09 Providing "As-Built" Drawings. The developer/
contractor shall maintain .onthe jobsite project plans marked
to indicate City-approved plan revisions made in the field and
other details of construction. The drawings shall be made
available upon completion of the project to the District for
use and preparation of "as-built" records. The developer shall
• be responsible for the cost of any required "as-built"
drawings . A copy of these "as-built" drawings shall be
provided to the City.
3. 10 Restoration of Right-of-Way. The Grantee shall be
responsible for and. leave all City roads and rights-of-way in
good condition, after work on, under or adjacent to the City
roads or rights-•of-way as the same were before such work. In
the event that the Grantee, its contractors or third parties - -0
connecting to Grantee's lines or facilities under work permit ,
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RESOLUTION NO. 2413
WHEREAS the City of Kent has within its municipal
boundaries a portion of land bordering S . 180th, also known as
S.W. 43rd, which area is not presently served by sewers , and
WHEREAS the City of Kent does not have at present the
ability to provide sewer service to that portion of land, and
WHEREAS as part of the widening project on S . 180th
Street (S .W. 43rd) , the City of Renton plans to install sanitary
sewers , and
WHEREAS the City of Kent has previously requested the
City of Renton to serve previously described land with the City of
Renton 's sanitary sewer , and
WHEREAS it is agreed between the City of Renton and the
City of Kent that the City of Renton shall have the right to provide
sanitary sewer service to the City of Kent parcel along S. 180th
(S.W. 43rd)_ described as Parcels 36 through 40 on the Exhibit
attached hereto and it is further agreed that the City of Renton
shall have the right to charge one and one-half times the normal
i , sewer service rate plus its normal connection charges , System
Development Charges , tap-in charges , and Community Facility Charges
as are applicable , now therefore
THE CITY COUNCIL OF THE CITY OF RENTON, WASHINGTON, DO
RESCUE AS FOLLOWS :
SECTION I : The above recitals are found to he true
and correct in all respects .
SECTION II : The Mayor and City Clerk are hereby authorize,
r
to enter into an Interlocal Agreement with the City of Kent to
provide sewer- service to those parcels along S . 180th Street as
, per Exhibit "A" attached.
PASSED BY THE CITY COUNCIL this 3rd day of August , 1961 .
e ores . Me , C ty C er
APPROVED BY THE MAYOR this 3rd day of August , 1981 .
off..
Bar. ara Shinpoch , Mayor
Approved as to form; •
64tA,-,a4.......e ),P)1'6.4,o4%., ,
Lawrence J . Warren , City—Attorney
•
CAG 072-85
AGREEMENT
•THIS AGREEMENT made and entered into this /6 day cT�,� dt Q ]985 by
and between the City of Renton, a municipal corporation, her in ter referred to as
the "City" and King County Water District 0128, a municipal corporation, hereinafter
referred to as the "District", both duly authorized and existing by ventures of the
laws of the State of Washington.
WITNESSETH
•
WHEREAS, the parties to this agreement each have the power to perform the terms
and conditions of this agreement, and
WHEREAS, the District has or is about to, assume the ownership, operation and
maintenance of the King County Sewer and Drainage District -04, and the Olsen
District for the purposes of providing sanitary sewer service, and
WHEREAS, the District has or is about to assume the King County agreement with
First City Development Corporation to provide sewer service thru the District system,
and
WHEREAS, Renton has adopted a policy of requiring annexation to the City of
Renton prior to extension of sewer service outside its corporate limits in order to
ensure that all areas annexed to Renton are as far as s i le,�develo ed o City
standards, • 90? •, G �sTa645 b
Er_--47 i ,lere.r7` /O
ash
WHEREAS, in the City and the District's future ultimate service areas for
sanitary sewers that service overlaps and system duplications be avoided,
NOW, THEREFORE, IT IS COVENANTED AND AGREED AS FOLLOWS:
1. PURPOSE: The purpose of this agreement shall be to establish generalized
service boundries between the District and the City.
2. BOUNDRIES: The District and the City agree to service within the generalized
service area map of Exhibit ill and not to service inside the other agency's
area without consultation and joint approval.
•
IN WITNESS WHEREOF the parties have hereunto set their hand and seals the day
• and year first above written.
KING COUNTY WATER DISTRICT 11128 CITY OF RENTON
Adopted at the regular meeting of
the Board of mmissi ers •
canboxw,4,.SRl.nQnc`0.
Barbara Y. Shinpoch., Mayor
I 1„/_ .s. 7 —t- -'
Plaxine E. Motor, City Clerk
A� � /ealf,414
Approved as to legal form:
•
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Lawrence Warren, ity Attoney
--
j Signed this / day 0417/A1.74 1985. Signed this /yS.f.clay of �p 1985.
STATE OF WASHINGTON)
)ss
COUNTY OF KING )
THIS is to certify that on this IZ. 5,•A2 day of /12UgcJ ST 19 �
before me, the undersigned Notary Public, personally appeared
Pon/ s6 '2,toms ,ry , (3/Cy/ ,J' ./a7 "7-.4"•!eso
Nt I L S -72
and
to me known to be the C - - / SSiorVf/,t) d� �jkrTf-ice _pT.>/ 2 'Y
and acknowledged to me that executed the foregoing instrumenfi for
said as its free and voluntary act and deed, for
uses and purposes therein stated, and upon oath stated that such execution of -
said instrument by is duly and regularly authorized.
GIVEN under my hand an official seal the date last above stated.
•
fror
rot,
otary Public In and for the State
f Washington residing at6Sf_'/1T' -.
STATE OF WASHINGTON )
) ss
COUNTY OF KING )
This is to certify that on this day of
before me, the undersigned Notary Public, personally appeared
andiyG-‘ $ ?711-(5A1—'
to me known to be the duly qualified and acting Mayor and City Clerk
respectively, of the City of Renton, Washington, and acknowledged that they
' executed the above and foregoing Instrument for .the City of Renton as the
free and voluntary act and deed of said City for the uses and purposes
therein set forth, end upon oath stated. that such execution of said
instrument by them Is duly and regularly authorized and that the seal
attached thereto Is the corporate seal of the City of Renton.
Given under my hand and official seal this 4614 day of r4,4". 19-
Notary, F bow in and for the State
of Washington, residing at Renton
a 'I' ..-,-"'•!--•:'I
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I I - •1 '' _..i. -I �L { ..-- •- --- I_..,- ' dl:i.L ..111111n.i.. iiittllu,
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i. .�:i•- • ..•._ . Ij I-2:• ••• '• f'_Oa••• Ir .l-_•.I ..E:L-_L;
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• BOUNDARY'.BETWEEN I. 7 is '-�_- �1-I y.J LiftStation i _
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1,1�= .I . SHEET,
s</F�T .7.0
( CAG 039-74
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AGREEMENT FOR PROVISION •
OF SEWER SERVICE
THIS IS AN AGREEMENT between the City of Renton and
Cascade Sewer District regarding the provision of sewer service
to the areas defined.
i
I.
DEFINITIONS AND TERMINOLOGY
(1.) "The City" is the City of Renton, a municipal corpor-
ation in King County, Washington.
(2.) "The District" is the Cascade Sewer District, also a
municipal corporation in King County, Washington.
(3.) "Safecare-Careage" is the Safecare Company, Inc. and
the Careage Corporation, otherwise known as Safecare-Careage
` Venture No. 7, one of the contracting parties to the Safecare-
Careage Contract hereinafter defined.
(4.) "The Safecare-Careage Contract" is that contract be-
tween the City and Safecare-Careage dated the 11th day of August,
1970 pursuant to which the City authorized Safecare-Careage to
construct a sewer main of approximately 1,670 lineal feet of
eight inch (8") sewer pipe and six manholes in Springbrook Road
extending approximately 570 fees south of the center line of
\.I South 180th Street on the east side of Springbrook Road and
approximately 1,100 feet north of the center line of So. 180th
Street on the west side of Springbrook Road and connecting to
existing manhole R 18-25.
(5.) "The Springbrook Line" is the sewer line constructed
pursuant to the Safecare-Careage Contract.
(6.) ' "Scott's Terrace" is the property, the plat of which
is recorded as the plat of Scott's Terrace in Volume 72 of Plats,
pages 39 and 40, of the records of King County.
(7.) "The Radovich Property' is the entire parcel of land
bounded on the south and east by Carr Road, on the north by the
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south line of Scott's Terrace, and on the west by the Talbot
Road.
(8.) "The Talbot Road" and the "Springbrook Road" are in
effect a single street, the northerly portion of which is com-
monly known as Talbot Road, and the southerly portion of which
is commonly known as the Springbrook Road.
(9.) "So. 180th Street" is a street intersecting Talbott
Road, and within the City of Renton said street is known as So.
43rd Street on the City's numbering system. As said street ex-
tends easterly from its intersection with the Talbot and Spring-
brook Roads, it is known as Carr Road.
(10.) "The existing crossing" is a short main extension of
the Springbrook Line crossing the Talbor Road from manhole No. 2
to a spot near the boundary of Lots 1 and 2 of Scott's Terrace.
(11.) "The proposed crossing" is a main extension of the
Talbot Road Line proposed to be constructed from manhole No. 1
to a spot near the boundaryof Lots 4 and 5 of Scott's Terrace.
P
(12.) "U.L.I.D. 11" is a Utility Local Improvement District,
numbered 11, being formed by Cascade Sewer District, and includes
Lots 12, 13, 14 , 15, 17, 18, 19, 20, 21, 22, 27 and 28 of Scott's
Terrace, and that portion of the northerly 150 feet of the Rad-
ovich Property which lies east of the southerly prolongation of
the westerly boundary of Lots 17 and 18 of Scott's Terrace.
(13.) "METRO" is the Municiplaity of Metropolitan Seattle,
(14.) "The METRO Line" is a sewer trunk built, owned and
maintained by METRO, into which the Springbrook Line empties
at approximately the intersection of Talbot Road and South 177th
Street. The METRO Line continues generally easterly along South
177th Street, then continues generally southeasterly along
98th Avenue South, and then continues easterly.
II. •
FACTUAL BACKGROUND
(1.) Under date of August 11th, 1970, the City and Safecare-
Careage entered into the Safecare-Careage Contract which permitted
Safecare-Careage to build the Springbrook Line hereinabove
-,-
defined.
(2.) Said contract provided for reimbursement to Safecare-
Careage, subject to the laws and ordinances of the City of Renton,
by the owner of real estate who did not contribute to the orig-
inal cost of the improvement and who subsequently wished to tap
into or hook onto or use the facilities.
(3•) Said contract also reserves to the City the right
to make or cause to be made extensions of or additions to the
above-mentioned improvement and to allow service connections
to be made Co said extensions or addition's without liability on
the part of the City.
(4.) The properties, the owners of which are to be charged for
tapping into or hooking onto the Springbrook Line, and the amount
and rate of said charges for said properties, have already been
•
determined in accordance with Ordinance No. 2847 of the City of
Renton.' Of the properties involved in this Agreement, they are
the properties, sewer service to which is to be provided by the
City and not by the District under this Agreement.
(5.) The City is presently providing sewer service to Lots
1 and 2 of Scott's Terrace by means of the existing crossing.
(6.) No formal agreement for the provision of sewer service
in the subject area has been entered into between the City and
the District.
(7.) The City also proposes to provide sewer service to
Lots 4 and 5 of Scott's Terrace by permitting the construction
• of the proposed crossing.
(8•) The Cityis
prepared to furnish sewer service through
the Springbrook Line to Lots 3, 6, 7 and 8 of Scott's Terrace.
(9•) Although all of Scott's Terrace and the Radovich Property
•
are within the Cascade Sewer District and are outside the limits
+ of the City, each party recognizes that sewer service .to Lots
1, 2,. 3, 4, 5, 6, : 7, 8 and 16 of Scott's Terrace and to that portion
-3-
of the Radovich property which lies to the west of the
southerly prolongation of the westerly boundary of Lots 17
and 18 of Scott's Terrace can be provided by the City through
the Talbot Road Line sooner than such service could be pro-
vided by the District, and that sewer service to these prop-
erties by the City and the payment to the City of the charges
necessary under the Safecare-Careage Contract as already de-
termined pursuant to said Ordinance No. 2847 has and will pro-
vide the funds for reimbursement of Safecare-Careage under the
contract.
(10.) The District proposes to serve the properties within
U.L. I .D. 11 by utilizing the existing crossing and the proposed
crossing as hereinabove defined.
(11.) Both the City and the District have identical agree-
ments with METRO relating to the METRO Line, permitting both
the City and the District to make sewer service available to
• propefties along said line by allowing said properties to be
hooked onto the METRO Line, making an appropriate charge to the
owners of said properties and remitting the same to METRO as
payment against the cost of the construction of said line.
(12.) Because of the possible duplication of charges, and
the question of the proper agency to'provide sewer service to
various properties referred to above, the parties hereto do
desire by this Agreement to formalize their mutual responsibil-
ities and rights in the area.
III.
MUTUAL COVENANTS AND AGREEMENTS
In consideration of the covenants herein contained,
and in consideration of the benefits to each of the parties to
be derived from this Agreement and the performance thereof, and
-4-
because of the facts stated above, the parties hereto do agree
and covenant as follows:
(1.) The City will make sewer service available for that
portion of the Radovich Property lying west of the southerly
prolongation of the westerly boundary of Lots 17 and 18 of
Scott's Terrace and for Lots 1, 2, 3, 4, 5, 6, 7, 8 and 16 of
Scott's Terrace, and the District will not attempt to provide
sewer service for said areas.
(2.) The City will authorize an extension of or addition
to the Springbrook Line by permitting the construction of the
proposed crossing hereinabove defined. Said crossing must be
in accordance with the standards and requirements of the City
as to design and construction. The cost of the construction
of said proposed crossing will be borne by the District or
by private owners with whom the District may contract, or both,
but the proposed crossing will be constructed at no cost to
the City.
(3.) When the proposed crossing is completed, it will be
transferred to the City and will be available for the use of
the City to provide sewer service to those lots in Scott's
Terrace for which the City is to make sewer service available
under this Agreement.
(4.) Other than the properties described in Paragraph
(1.) of Section III of this Agreement, the District will make
sewer service available for all other properties within its
boundaries in the area of U.L.I.D. 11.
(5.) The City agrees that the District may, without pay-
ment of any area connection charges, connection fees, latecomer
•
fees, extended service fees, or any fee of any kind, but at the
District's own cost of construction, connect its mains to the
existing crossing to the proposed crossing when constructed,
provided that the design and construction of the District's
-5-
facility so connected meet with the approval of the City.
(6.) Without any cost to the City, the District will
place a manhole at the easterly end of the existing crossing
and will connect the existing side-sewer tothis manhole. The
District will also cause a manhole to be constructed at the
easterly end of the proposed crossing, and each of said manholes,
when completed, will be transferred to the City to own as
part of their main extensions consisting of the existing cros-
sing and the .proposed crossing. Said manholes will meet the
design and construction requirements of the City.
(7.) Unless it has the prior consent of the City, the
District will not attempt to make sewer service available to
those properties lying immediately south of So. 180th Street
and in the immediate vicinity of the Sringbrook Line which,
without the construction of main extensions which would be
exempt from any charges under Paragraph S of the Safecare-
Careage Contract, can be served by that portion of the Spring-
brook Line as presently constructed.
(8•) Although portions of the lines hereinabove described
will be jointly used by the City and the District, each of
the parties hereto will maintain its own lines at its own
cost.
(9.) If all of the properties which are to be served by
the District under this Agreement are annexed to and become
a part of the City, the District will, without charge to the
City, transfer to the City the entire sewer system to be con-
structed by the District in U.L.I.D. 11 as described in this
Agreement.
(10.) All facilities constructed by the District which are
to be transferred to the City under this Agreement will be
transferred by an appropriate Bill of Sale in standard form.
(11.) The District will hold the City harmless from any
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•
claims made against the City and will protect the City from
any liabilities in connection with any of the work to be
done by the District.
(12.) Nothing in this Agreement as to which party shall pro-
vide sewer service to particular properties shall be construed
as to require the provision of such service .except in accord-
ance with the Ordinances or Resolutions of the party, and
upon payment to the party of all proper charges by the property
owner.
•
IN WITNESS WHEREOF, the parties hereto have caused
r-
this Agreement to be executed by their duly authorized
officers and to have their respective seals affixed hereunto.
#
DATED this /Qda
_ Y of /y CoVFMl3t- P 1974. •
CITY OF RENTON
A municipal corp ation •
By
Nayor
BY A114i Ci3 Clerk
CASCA E SEWER DISTRICT
By .• -�-`
P esiden ,Commissioner
By Wir C
ommissioner
BY
Secretary Commissioner
•
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shall fail to restore the City roads or rights-of-way to the
condition that pre-existed' such work to the satisfaction of the
director, the City reserves the right to make such repairs or
restoration to such roads. or rights-of-way, and upon
presentation .of an itemized ..bi ll for such repairs or
Orestoration, including the cost of labor and equipment , the
Grantee' shall pay the said bill, within thirty (30) days. In
the event that suit is brought upon . failure to pay the bill
0 within. thirty (30) days , and upon judgment being entered in
favor of the City, Grantee shall further. pay all the actual
costs , disbursements and attorney's fees incurred thereby.
3. 11A Removal or Relocation of Facilities Installed by
Grantee. re'U onhe
p, , t location Or change of grade by the public
authorities of any right-of-way described herein, any lines or
.
facilities ,. erected upon 'Or- within any portion of such
right-of-way, ' shall , if necessary, be removed by the Grantee at
its own expense .so that it shall not interfere with the work of
-- relocatio,n. or. change� 'of grade 'and Shall be reset in accordance
dr) with the provisions above set forth so that the location and
ta elevation of such line or facility shall conform to the new
grade and ],ocati.on ' of the right-of-way. Grantee shall
O likewise , at its own expense, upon demand of the director,
relocate any line Or facility which shall interfere with a
reasonably located driveway giving access to abutting
1 r4
property. The City shall in no event be held liable for any
damages to said Grantee that may occur by reason of the City' s
op improvements , repairs or maintenance or by the exercise of any
rights .are reserved in this section.
3. 11B Competing Service Areas. In the event that the
parties have existing sewer lines parallel to one another and
subject to Chapter 35. 13A, et seq. and _further subject to any
assertion of jurisdiction by the Boundary Review Board and any
subsequent decision of the Boundary Review Board , the parties
agree that should the Water District need to replace a sewer
line or perform such substantial repairs to the sewer line that
the .cost of repairs is equivalent to the value of the sewer
line , then the City of 'Renton shall have the right to provide
service to the customers in the City limits in that service
area.
3. 11C Installation Codes. Grantee agrees that any new
' sewer line installation or replacement done pursuant to this
agreement shall meet all requirements as set out in the current
or subsequently adopted :
•
-5-
if
•
•
King County Water District No. 107 - Metro
Service Agreement and Specifications ; ,
King County Water District No. 107 Design and
Technical Specifications :
Parts II and III : Technical Specifications
- Sewer Extension;
Part • IV: Technical Specifications -
Standard Sewer Details ;
Standard Specifications for Municipal Public
Works Construction of the American Public Works
Association;
"Criteria for Sewage Works Design," State of
Washington Department of Ecology - Revised Oct.
1985 ;
C1t
Washington Administrative Code Section 173-240,
0 "Submission of .Plans and Reports .for Construction
OD
OD of Wastewater Facilities" (DOE) ;
1.4
All other applicable state and federal
regulations and statutes regarding sewage works ,
OD design and hazardous waste disposal .
3. 12 Blasting Requirements. The laying , construction,
maintenance and operation of the Grantee ' s system of lines and
facilities granted under this franchise shall not preclude the
City, its accredited agent , or its contractors from blasting ,
grading or doing other necessary roadwork contiguous to the
Grantee 's lines and facilities, provided that the Grantee shall
have seventy-two (72) hours notice of said blasting or-
excavating in order that Grantee may protect its lines ,
facilities and property.
3. 13 Assignment of Rights to Third Party. The Grantee
shall have, the right . to assign its franchise provided , however,
no such assignment shall be of any force or effect unless
written notice of such assignment shall be filed with the Clerk
of the Council within thirty (30) days thereafter, together
with an acceptance by the assignee in writing of all the terms ,
covenants and conditions Of this franchise and an agreement of
such assignee to perform and be bound by all the terms and
conditions of this franchise.
All the provisions, conditions, regulations and
requirements herein .contained shall be binding upon the
successors _and assigns of the Grantee, and all privileges , as
-6-
•
•
well as all obligations and liabilities of the Grantee, shall
inure to 'its successors and assigns equally as if they were
specifically mentioned wherever the Grantee is mentioned.
3. 14 Expiration and Renewal . All rights granted by this
franchise to. City roads and rights-of-way shall apply to all
existing. City roads and rights-of-way' whether improved or
unimproved , and shall further include City roads and
rights-of-way acquired by the City after the date of execution
of this document.
If, upon expiration of this franchise, Grantee shall not
• have applied for renewal of same, the City shall have the right
to remove such linesor facilities of the Grantee as are
. reasonably necessary for the safe condition of the roads or
. ri ghts-of-way"or facilities of other franchise holders and such
are reasonably necessary to remove for the construction,
( renewing , altering or improving of such roads or rights-of-way,
and such .as _are reasonably necessary to remove for the
- .C), installation:of of lines and/or facilities of other franchise
�. holders. . Grantee shall ' be liable for the costs incurred in
r such removal including the 'cost of labor and equipment ;
provided that such removal is affected with two (2) years from
V) the expiration date hereof.
i - �
3. 15 Right to Amend . The City reserves for itself the
right at any time upon ninety (90) days written notice to the
- OD Grantee, 'to so change, amend , modify or amplify any of the
. provisions or conditions herein enumerated to conform —to to .any
state statute. or regulation relating to the public welfare,
health, safety or right-of-way regulation as may hereafterbe
enacted , adopted or promulgated and this franchise may be
terminated at any Lime if the Grantee's lines and facilities
are not operated o1 maintained in accordance with such statutes
or regulations.
•
3. 16 Environmental Compliance. Grantee must conform to the
Washington State Environmental Policy Act and any amendments
thereto.
3. 17 No Discrimination in Employment. In connection with
the performance of any work by the District or its agents
addressed herein, the District and its agents shall comply with
all federal , state and local codes, statutes and ordinances
prohibiting discrimination.
i '
3. 18 Penalty for Violation of Conditions . If the Grantee
shall violate or fail to comply with any of the terms,
conditions or responsibilities of this franchise through
neglect or failure to heed or comply with any notice given the
-7-
•
Grantee under the provisions of this franchise, the Council
may revoke, amend, alter, change or supplement this
franchise provided , however, that the Council shall give
thirty (30) days written notice of its intention to do so,
during which period the Grantee shall have the opportunity
to remedy the failure to comply.
3.19 Franchise Fee. The Grantee shall annually pay to
the City a franchise fee of five cents ($.05) per lineal
foot of transmission sewer lines owned by the Grantee, lying
within City rights of 'way as described in paragraph 2. 02
herein. City and Grantee agree that Grantee owns
transmission and service lines and is responsible for
maintenance thereof.
3.20 Severance. This agreement shall be construed to
_ give effect to such-purposes and uses under this franchise
which are consistent with economical and efficient service
04 rendered in' the public interest. If any provision of this
franchise, or its application is determined to be invalid by
C) court of law, then the remaining provisions of the franchise
OD shall continue and be valid unless the dominant purpose of
'4 the franchise or the public interest herein is thwarted
thereby.
r 3 .21 Recording. This agreement shall be recorded with
'A the King County Office of Records and Elections immediately
upon its execution by the parties herein.
SECTION 4: RESERVATION OF RIGHTS; RENTON UTILITY TAX
4 . 01 The City and the District acknowledge disagreement
over the City's right to impose water utility taxes on the
District' s gross revenues derived from parties receiving
service from the District located within Renton's corporate
boundaries. The parties acknowledge the District' s refusal
to collect and transmit such utility tax to the City.
Therefore, the City hereby expressly reserves all rights to
make claim against the District for the payment of such
utility taxes.
SECTION 5: RESERVATION OF RIGHTS; COMPREHENSIVE PLAN
APPROVAL
5.01 The parties herein reserve all rights provided
under applicable Washington law to approve, conditionally
approve, or reject the general Comprehensive Plan as
submitted by the other party.
CITY OF RENTON ( "Renton" ) KING COUNTY WATER DISTR T
NO. 10Oct" )
•
B y_ LNAU La pin ', By 7 ( "Di #""'"-
Its Magor Its
ATTEST:
ei22., 8
city Clerk
•
i
The undersigned hereby accepts all the rights and privileges
of the above granted franchise subject to all the terms,
conditions, stipulations and obligations contained herein.
RING COUNTY WATER DIST -CT
NO 107 214t.:) •
By r7
I t s
Dated this i,'`'' day of November, 1987.
CITY3:51/10/30/87
0)
04
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L. O
OD
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LD
9
CAG 035-75
AGREEMENT
THIS AGREEMENT, made and entered into this / 9 Ic day of
u Y1 , 1975 by and between the CITY OF RENTON, a municipal
corporation operating as a non-charter code city, hereinafter referred to as
"City" and KING COUNTY WATER DISTRICT NO. 107, a municipal corporation, herein-
after referred to as "District",
•WITNESSETH:
WHEREAS, City and District are situated contiguously in King County, State
of Washington; and
WHEREAS, City is presently preparing construction plans and call for bids
in connection with Local Improvement District No. 284 including the construction
r of an interceptor sewer line extending from the present sewer collection trunk
i
1 line operated by the Municipality of Metropolitan Seattle, which line, when
R , extended, will run within the boundaries of District; and
WHEREAS, District likewise intends to utilize said interceptor sewer line
within •rts boundaries and in order to avoid duplication of such trunk facilities;
and, •
WHEREAS, District is willing to pay for the total cost of said line and to
promptly reimburse the City for all of such costs and expenses incurred for said
T__, sewer line located outside the present b aindaries of Local. Improvement District
No. 284, further reference being hereby had thereto.
NOW, THEREFORE, IT IS HEREBY MUTUALLY AGREED AND COVENANTED by and between
the parties as follows:
1. The parties enter into this Agreement under the authority of •
f RCW 39.34.080.
2. Said Sewer line and appurtenances thereto shall be constructed through
y _
and across certain areas within the City of Renton and Water District No. 107,
King County, Washington, as follows:
SEE EXHIBIT "A"
3. District hereby gives and grants unto the City full authority for the
construction and installation of said line within the boundaries of District;
r,:
it being understood and agreed that City's contractor, after award of bid to the
lowest responsible bidder, will perform all of such work within the boundaries of
. said Local Improvement District and within District's territory as .more
particularly shown on the attached exhibit which is incorporated herein as if
fully set forth.
4. The District will pay for all such construction work within the
boundaries of the District, plus the difference between the cost of an 8-inch
117
-1-
line and whatever size line is constructed on City property, it being agreed
that the larger line is for District's benefit. The cost of such oversizing
will be determined by the difference between responsible low bids for con-
structing an 8-inch and the larger size line within City's Local Improvement
District.
City will bill District the costs for which District is responsible herein.
District will pay said billings to the Director of Finance, City Hall, City of
Renton, Washington on or before the end of the month during which District has
had possession of any such billing by the second Monday thereof (it being under-
stood that vouchers for payment of monthly District liabilities are considered
for approval by District's Board of Commissioners at their regular meetings on
the second Wednesday of each month.)
No such billings shall be payable by District unless accompanied by a
certificate from City's Engineer that the construction work represented thereby
has been acceptably completed by the Contractor.
5. Upon completion of said sewer line installation and acceptance thereof
by the parties, said line shall be used, operated and maintained by the District
and the City, respectively, for service of their present and future customers so
as to transfer all sewage collected by the City and District within their
respective territories for delivery to the Metro trunk line and each party shall
pay its respective share therefor; no payment or service charge shall be
required by either of these parties against the other for the right and privilege
of such use after payment of construction costs as herein provided.
6. City shall have the right to authorize connections to said line or any
line tributary to said line by property owners situated within the boundaries
of the City of Renton, King County, Washington, as they now or may hereafter
exist, and upon such terms and conditions as the City may establish for making
such connections as per City's resolutions and ordinances. City shalom have the
right to authorize connections to said line or any line tributary thereto by
property owners that may hereafter annex to the City and upon such terms and
conditions as provided for by the policies, rules and regulations of the City.
7. District likewise shall have the right to authorize connections to said
line by property owners located within the boundaries of said District and upon
such terms and conditions as the District may establish• from time-to-time for
making such connections.
8. Once said sewer line has been installed and accepted from the contractor,
all costs of maintenance, repair and operation incurred for said interceptor line
shall be borne solely by the City as to that section of the line located within
the boundaries of the City; all of such maintenance, repair and operation expenses
as to the line located outside the boundaries of the City shall be borne solely
by District. Each of the parties shall be responsible for and promptly repair
and remedy any damages or defects occurring to, on or about said line within its
respective territorial jurisdiction.
9. Title and ownership of said line, upon completion and acceptance thereof,
•
shall be in the City as to that portion thereof within City's Local
Improvement District, and in District as to the remainder.
10. The capacity of said line is agreed to be 2.15 million
gallons per day (mgd) . District's utilization of said line is
limited to 1. 65 mgd. and City's to .50 mgd. , but each party
hereto warrants and guarantees the other's right to utilize said
line for the gallonage per day to which each party is herein
limited. Whichever of the parties causes said line to exceed its
• total gallonage per day shall be financially responsible for
implementing delivery of its excess sewage to the Metro trunk line
by mutually agreeable arrangements.
City assumes the responsibility for measuring total daily
gallonage in the line and to promptly notify District when said
line exceeds its capacity.
11. It is further anticipated that the total cost of said
construction to be borne by District, as herein above set forth,
is approximately $120,000. 00 less any monies made available from
Federal and State grants; City agrees to advise District
of any substantial change in said estimate. District further
warrants that proper funds have been budgeted by District
for payment of the aforementioned improvements within its boundaries
and that District has lawful right to make such payments unto City
as hereinabove set forth.
A portion of all governmental grant funds received by City
in connection with construction of said line shall be credited by
City to the District' s obligations hereunder in the ratio which
District's share of the cost of the line bears to the total cost
i _ of the project. District will be promptly notified of the
receipt of said funds and of the amount thereof to be credited
i ' to District. Such credits will be promptly applied by City
7 I
'` against District's liabilities hereunder until exhausted. If
,, application of such credit results in an overpayment by District,
City will promptly reimburse District accordingly.
" 12. Each of the parties hereby agrees, in order to effectuate
the terms.of this Agreement, to execute and deliver unto the other,
i_' whenever reasonably-necessary, appropriate permits, easements and
like documents, and to co-operate with the other to assist' in
compliance with the Washington Inter-Local Co-operation Act (RCW
39. 34 et seq) and/or any other laws applicable to the parties or
the subject matter.
L13. The duration of this Agreement shall be perpetual until
- 3 -
•
mutually rescinded or amended by the parties or by a Court of
competent jurisdiction.
IN WITNESS WHEREOF, the parties have hereto set their hands
and seals this /9/1 day of OGne. , 1975.
KING COUNTY AT.R DIS T NO. 107 CITY OF RENTON, WASHINGTON
By _
_
ByC-11-441ChairmanMp(24-9�
By 17 ti��C-L_ B
( Secretary/N:0 -rum Cit Clerk
•
•
•
•
- 4 -
•
EXHIBIT "A"
The following description located in King County, Washington described
to centerline route of the proposed Interceptor Sewer from its point of
discharge into the Trunk Sewers of the Municipality of Metropolitan Seattle
to the northerly terminus of the proposed interceptor sewer.
Beginning at the North Quarter corner of Section 32, T 24 N, R 5 E, W.M. ,
thence south 1°41 '46" West, a distance of 1098.00 feet thence North
90°00' 00" East 15.00 feet to the true point of beginning; also being existing
Metro Manhole.
1 . Thence North 1 °41 '46" E 544.00 feet
2. Thence South 88°46' 56" E 274. 00 feet
3. Thence North 0°45'49" E 1185.00 feet
4. Thence North 88°40'56" W 322.00 feet
5. Thence North 0°47' 18" E 700.00 feet
•
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APPENDIX C
CITY OF RENTON
RESOLUTION NO. 2764
Sanitary Sewer Moratorium
Within the South Highlands,
Maplewood, and Heather Downs
Drainage Basin
CITY OF RENTON, WASHINGTON
RESOLUTION NO. 2764
A RESOLUTION OF THE CITY OF RENTON, WASHINGTON, DECLARING
A MORATORIUM FOR CONNECTIONS TO SANITARY SEWERS WITHIN THE
SOUTH HIGHLANDS, MAPLEWOOD, AND HEATHER DOWNS DRAINAGE
BASINS.
WHEREAS, the areas within the South Highlands, Maplewood, and
Heather Downs drainage basins are undergoing rapid growth; and
WHEREAS, the South Highlands, Maplewood, and Heather Downs
areas have been determined to be areas of concern of the City for
sanitary sewer capacity; and
WHEREAS, the City has previously defined the boundaries of the
South Highlands, Maplewood; and Heather Downs drainage basins as per
attachment "A" which is incorporated herein as if fully set forth;
and
WHEREAS, the presently existing sanitary sewers within those
basins are operating at or near capacity; and
WHEREAS, existing sewer lines have insufficient diameter and
F . are of insufficient slope to serve the areas of the respective
basins; and
WHEREAS, certain sewer lines within, the collection systems of
each of those basins are flowing in excess of their designed
capacity; and
WHEREAS, the capacity of those sanitary sewers are periodically
exceeded in times of high rain or intensive use resulting in the
backup of untreated sewage; and
WHEREAS, such backups of untreated sewage are detrimental to
the public health and safety.
1
RESOLUTION NO. 2764
NOW, THEREFORE, BE IT RESOLVED BY THE CITY OF RENTON,
WASHINGTON, AS FOLLOWS :
SECTION I . The above recitals are found to be true and
correct.
SECTION II . There is hereby declared a moratorium on the
connection of new construction to any of the existing sewer systems
in the South Highlands, Maplewood, and Heather Downs basins . This
moratorium will be in effect until January 31, 1992, the time when
it is estimated that the capacity of the system will be improved so
that additional connections can be allowed. This moratorium may be
extended by the City Council upon a finding that the sewer health
problems have not been adequately resolved.
SECTION III . The following properties, although covered by the
moratorium, may have available a limited exemption:
1 . Eastway Center.
2 . Oakwood Homes .
3 . Old National Bank, N.E. 4th Street branch.
4 . Bakke, Inc.
5 . Forest Crest.
6 . Carner Construction (Union Avenue at S.E. 132nd) .
7 . Union Plaza.
8 . Renton East.
9 . Crown Point II .
The above properties may be permitted to hook-up to the
South Highlands, Maplewood, and Heather Downs sewers only until 125
equivalent dwelling units (EDU's) have hooked up to the sewers, or
until the City Council has determined, following the Public Works
2
i
RESOLUTION NO. 2764
Director's recommendation, that the sewers have reached or exceed
capacity. Upon the occurrence of either such Council finding or
permits being issued to construct the 125 EDU's, no further
connections shall be permitted. In the event interim improvements
increase the available capacity, additional EDU'.s will be made
available.
Available capacity, expressed in number of EDU' s, will be
assigned to applicants for building permits based on date of
application, on a "first-come first-served basis . "
The owner of a single-family dwelling unit suffering an
emergency (i.e. , failed septic tank) or any single connection ( 1
1 " equivalent dwelling unit) adjacent to an existing collection system
i eline may P petition the City Council for a waiver of the terms of
the moratorium and for authority to connect to the sewer system.
Said connection shall not exceed one (1) EDU.
PASSED BY THE CITY COUNCIL this 17 day of July , 1989 .
e
Maxine E. Motor, City Clerk
APPROVED BY THE MAYOR this 17 day of July ; 1989 .
Earl Clymer, Mayo
Approv as to form:
'_ . Lawrence J. Wa en, City Attorney
Res.58:7-7-89 :as .
3
APPENDIX D
City of Renton
Municipal Code
Title VIII - Chapter 7
SEWERS
PIPELINE MATERIALS FOR THE
AQUIFER PROTECTION ORDINANCE
PIPELINE REPAIR MATERIALS FOR
AQUIFER PROTECTION
8 .701 8-701
CHAPTER 7
- SEWERS
SECTION:
8-701: Definitions
8-702: Use of Public Sewers Required
8-703: Private Sewage Disposal
8-704: Building Sewer Permits
8-705: Independent Sewers; Cost Of
8-706: Specifications for Building Sewers
8-707: Connection of Building Sewer to Public Sewer
8-708: Inspection
8-709: Precautions While Building
8-710: Use of Public Sewers
8-711: Grease, Oil and Sand Interceptors
8-712: Preliminary Treatment of Waste Matter •
8-713: Manholes
8-714: Examination of Water and Sewage
8-715: Sewer Charges
8-716: - Billings and Collections
8-717: Charges for Property Not Previously Assessed
8-718: Facility and Trunk Connection Charges (Rep. by Ord. 3547, 5-18-81)
8-719: Public Sewer Extension
8-720: Public Sewer Specifications
8-721 : Penalties for Violations of Regulations
8-701: DEFINITIONS: Unless the context specifically indicates otherwise,
the meaning of terms used in this Chapter shall be as follows:
"Sewage Works" shall mean all facilities for collecting, pumping, treating, and
disposing of sewage.
Sewage shall mean a combination of the water-carried wastes from residences,
business buildings, institutions, and industrial establishments, together with such
ground, surface, and storm waters as may be present.
"Sewer" shall mean a pipe or conduit for carrying sewage. (Ord. 2173, 8-16-65)
"Public Sewer" shall mean that portion of a sanitary sewer and its appurtenances
located on property, easements and rights of way held, owned, controlled and
{
accepted by the City or other public authority. (Ord. 3055, 8-9-76)
589
8-701 8-701
"Combined Sewer" shall mean a sewer receiving both surface runoff and sewage.
"Sanitary Sewer" shallmean a sewer which carries sewage and to which storm, surface,
and ground waters are not intentionally admitted.
"Storm Sewer" and "Storm Drain" shall mean a sewer which carries storm and surface
waters and drainage, but excludes sewage and polluted industrial wastes.
"Sewage Treatment Plant" shall mean any arrangement of devices and structures used
for treating sewage.
"Industrial Wastes" shall mean the liquid wastes from industrial process as distinct
from sanitary sewage.
"Garbage" shall mean solid wastes from the preparation, cooking, and dispensing of
food, and from the handling, storage, and sale of produce.
"Properly Shredded Garbage" shall mean the wastes from the preparation, cooking,
and dispensing of food that has been shredded to such degree that all particles will be
carried freely under the flow conditions normally prevailing.in public sewers, with no
particle greater than one-half inch ('/2") in any dimension.
"Building Drain" shall mean that part of the lowest horizontal piping of a drainage
system which receives the discharge from soil, waste, and other drainage pipes inside
the walls of the building and conveys it to the building sewer, beginning five feet (5')
outside the inner face of the building walls.
"Building Sewer" shall mean the extention from the building drain to the public sewer
or other place of disposal.
"pH" shall mean the logarithm of the reciprocal of the weight of hydrogen ions in
grams per liter of solution.
"B.O.D." (denoting Biochemical Oxygen Demand) shall mean the quantity of oxygen
utilized in the biochemical oxidation of organic matter under standard laboratory
.2procedure in five (5) days at twenty degrees (20° ) C., expressed in parts per million by
weight.
"Suspended Solids" shall mean solids that either float on the surface of, or are in
suspension in water, sewage, or other liquids; and which are removable by laboratory
filtering.
"Natural Outlet" shall mean any outlet into a watercourse, pond, ditch, lake or other
body of surface or ground water.
"Watercourse" shall mean a channel in which a flow of water occurs either
continuously or intermittently. (Ord. 2173, 8-16-65)
"City Comprehensive Sewerage Plan" shall mean the complete engineering report
and plans that guide planning and construction of all new sanitary sewer facilities.
•
589
1 Nov -.:ri PIPELINE MATERIAL
I rir�c 1
1 Nov 89 ALTERNATIVES
City of Renton, Washington
1 PIPE DIAMETER 1 1 CONSIDERATIONS
PIPE MATERIAL 1 <4 4-8 10-12 14-20 24-30 36-54 1 SUGGESTED MATERIAL SPEC 1 (See Table 2)
1 = I 1
Ductile Iron, Rubber Gaskets 1 1 ;
Cement Mortar-Lined 1 1 ,2 1 ,2 1,2 1,2 1,2 1 AWWA C151 , C104 1 a b c d v w z
Polyethylene-Lined 1 1,2 1,2 1,2 1,2 1,2 1 AWWA C151 1 a b c d v w z
Ductile Iron, Viton Gaskets I 1 1
Cement Mortar-Lined 1 1,2 1,2 1,2 1,2 1,2 1 AWWA C151 , C104 1 b c d j v w z
Polyethylene-Lined 1 1 ,2,3 1,2,3 1 ,2,3 1,2,3 1 AWWA C151 1 b c d e j v w z
Welded Steel , Rubber Gaskets I 1 ;
Cement Mortar-Lined 1 1,2 1,2 1,2 1,2 1',2 1 AWWA C200, C205 1 a b f g h v w z
Dielectric-Lined 1 1,2 1,2 1,2 1,2 1,2 1 AWWA C200, C210 1 a b f g h v w z
Welded Steel, Welded Joints 1 1
Cement Mortar-Lined 1 1,2 1,2 1 AWWA C200, C205 1 f g h v w z
Dielectric-Lined i 3 1 AWWA C200, C210 t f g h v w z
1 1 1
PVC, Rubber Gasket Joints 1 1 ;
SDR-35 Sewer Pipe 1 1,2 1,2 1,2 1 ASTM D3034 1 a b m n o v w z
Blue Brute Cl 150 or 200 1 ' 1,2,3 1,2,3 1 AWWA C900 1 a b o g v w z
PVC, Viton Gasket Joints 1 1
SDR-35 Sewer Pipe 1 1,2 1,2 1,2 1 ASTM D3034 l b j m n o v w z
Blue Brute Cl 150 or 200 / 1,2,3 1,2,3 1 AWWA C900 1 b o q v w z
PVC, Solvent Welded Joints 1 1 ;
Sch 80 1 2,3 1 ,2,3 1,2,3 1 ASTM D1784, D1765 1 h o p g v w z
*
High Density Polyethylene 1 1 1
Thermal-Fusion Joints 1 2,3 1,2,3 1,2,3 1 ,2,3 1,2,3 1,2 1 ASTM D3350 1 h i o v w z
1 1 1
Concrete, Rubber Gasket Jts 1 1 1
Standard Concrete Lining I 1 ASTM C76 t a b k l m v w z
With Insituform Lining 1 1,2,3 1 ,2,3 1,2,3 1,2,3 1,2 1 ASTM C76, D638 1 h r v x w z
With HDPE Insert 1 1,2,3 1,2,3 1 ,2,3 1,2,3 1,2 1 ASTM C76, D3350, • I h i v w z
1 , , .
Conc Cylinder, Rubber Gasket 1 1
Std Cement Mortar Lining 1 1,2 1,2 1 AWWA C301,' C303 l a b f g k v w z
With Insituform Lining 1 1,2,3 1,2,3 1,2,3 1,2,3 1,2 1 AWWA C301, C303 • 1 g h r v x w z
With HDPE Insert 1 1,2,3 1,2,3 1,2,3 1,2,3 1,2 1 AWWA C301, C303, ASTM D3350 1 g h i v w z
1 1 1
Fiberglass, W/ Welded Joints 1 2,3 1 1ovwxyz
1 1 '
Insituform Liner 1 4,5 4,5 4,5 4,5 4,5' : ASTM D638 1 h r v w x z
HDPE Insert 1 4,5 4,5 4,5 4,5 4.,5 ' 4,5 1 ASTM F585 1 h i v w z
1 1 1 -
PIPELINE SERVICE • .
1. Storm Sewer
2. Sanitary Sewer
3. Leachate Pipeline. •
4. Rehab Existing Storm Sewer
•
TABLE 2
CONSIDERATIONS ON SELECTION OF PIPE MATERIALS
The following considerations are to be used in conjunction
with Table 1 for tentative selection of pipe materials.
a. Rubber gaskets may be severely damaged by petroleum
products, particularly in prolonged exposures to
concentrated flows containing little or no storm water
or sanitary sewage.
b. Gasketed joints are not considered leak-proof at zero or
low pressures, and may not be leak-proof at higher
pressures.
c. Mechanical joints may be less likely to leak at low
pressures than push-on joints.
d. May need protective coatings and/or cathodic protection
against external ,corrosion.
e. Considered most reliable gasket and lining material for
ductile iron leachate pipeline.
f. Very difficult to repair linings on inside of joints in
pipe smaller than 24-inch diameter.
g. Almost always needs protective coatings and cathodic
protection against external corrosion.
h. Properly made joints are considered leak-proof.
i. Polyethylene, although corrosion resistant, can be
severely affected by prolonged exposures to petroleum
products.
j . Viton (or nitrile) gaskets may require long delivery
time.
k. Concrete pipe not recommended without "liquid-tight"
lining of another material.
1. Potential to develop leaks at *joints due to structural
or gasket failures.
m. Limited to low pressure applications.
n. Pipe not available over 15-inch diameter.
o. Requires special attention to bedding and backfill depth
to avoid structural failure of pipe.
p. Large thermal expansion coefficient. May need to limit
solvent welded joints to 4-inch and smaller pipe. May
require careful evaluation of pipe installation
temperature and temperature of piped liquids to ensure
joint integrity.
q. Pipe not available over 12-inch diameter.
r. Insituform lining is available in 6-inch through 60-inch
diameter for almost any pressure, if sufficient pipe
cross-sectional area is available
s-u. Not used.
v. Suitability of pipe lining and gasket material to resist
chemical attack by conveyed fluids must be determined
for each pipeline service considered.
w. All storm and sanitary sewer manholes, catch basins, and
inlets should be equipped with precast concrete bottom
and sidewalls with rubber gasketed joints between
sections, water-tight epoxy grout pipe entrances through
walls, and bitumastic coating of all interior floor and
wall surfaces. Manholes, catch basins, and inlets
should have no leakage when hydrostatically tested at
atmospheric pressure.
x. Has good resistance to chemicals, petroleum products,
and hydrogen sulfide corrosion.
y. Not recommended for buried applications due to limited
experience and high cost.
z. "Zero leakage" test requirement may be impossible to
achieve under the. best conditions for any pipe material
because trapped air may distort test results, even in a
drop-tight pipe. Pressure and leakage testrequirements
should consider whether the pipe has steep slope or will
stand full of liquid. Pipelines should be tested with
the intent to prevent or minimize leakage. Air testing
should not be allowed; hydrostatic testing should be as
stringent as any found in the industry.
Pipe materials, without regard for chemical attack,
corrosion, or puncture, are generally ranked as follows,
in decreasing order of liquid-tight reliability:
welded steel with welded joints
high density polyethylene with thermal-fusion
joints
PVC with solvent welded joints
fiberglass with welded joints
Insituform liner
ductile iron with viton or rubber gaskets
concrete cylinder with gasketed joints
welded steel with rubber gasketed joints
PVC with viton or rubber gasketed joints
concrete pipe with rubber gasketed joints
•
• 8-701 8-702
"Side Sewer" shall mean that portion of the public sewer between primary
collection lines and individual property lines.
•
"Infiltration and Inflow" shall mean the combined volume of both infiltration and
inflow water found in existing sewer systems.
"Infiltration" shall mean the volume of water or ground water entering sewers and
building sewer connections from the soil through defective joints, broken or cracked
pipe, improper connections or other structural failures.
"Inflow" shall mean the volume of water discharged into sewer lines from surface
sources such as roof drains, cellar and yard area drains, foundation drains, swamp
and spring water drains, and all other accidental or deliberate discharges of surface
water.
"FWPCA" shall mean the Federal Water Pollution Control Act of 1956, PL 84-660,
_ together with the Amendments of 1966, 1972, and as same may be hereafter
amended; Public. Law 92-500 and all subsequent amendments thereto. (Ord. 3055,
8-9-76)
8-702: USE OF PUBLIC SEWERS REQUIRED:
(A) It shalr be unlawful for any person to place, deposit or permit to be deposited
in any insanitary manner upon public or private property within the City, or in
any area under the jurisdiction of said City, any human or animal excrement,
garbage, or other objectionable waste.
• (B) It shall be unlawful to discharge to any natural outlet within the City, or in any
•
area under the jurisdiction of said City, any sanitary sewage, industrial wastes,
or other polluted waters, except where suitable treatment has been provided in
accordance with subsequent provisions of this Chapter.
'
(C) Except as hereinafter provided, it shall be unlawful to construct or maintain
s any privy, privy vault, septic tank, cesspool, or other facility intended or used
for the disposal of sewage. (Ord. 2173, 8-16-65)
(D) . The owner of each house, building or property used for human occupancy,
employment, recreation or other purpose, situated within the City and abutting
onany street, alley or right of way in which there is now located or may in
the future be located a public sanitary or combined sewer of the City in which
said public sewer is within two hundred feet (200') of the property line and
which has been determined to be a health hazard by the City or the Seattle-
King. County Health Department, or its successor agencies, or which has
participated and been included in a Local Improvement District, is hereby
required at h-isexpense to install suitable toilet facilities, therein and to
connect such facilities directly with the proper public sewer in accordance
988
8-702 8-703
D) with the provisions of this Chapter, within ninety (90) days after date of official
notice to do so. Nothing herein shall require any such owner to connect with
said sanitary or combined sewer when such sewer is installed by a developer
for the purpose of meeting platting requirements and said owner is not within
the confines of said plat. (Ord. 3440, 6-23-80)
8-703: PRIVATE SEWAGE DISPOSAL:
1. Where a public sanitary or combined sewer is not available under the
provisions of this Chapter, the building sewer shall be connected to a private
sewage disposal system complying with the provisions of this Chapter.
2. Before commencement of construction of a private sewage disposal system
the owner shall first obtain a written permit signed by the Utilities Engineer.
The application for such permit shall be made on a form furnished by the City,
which the applicant shall supplement by any plans, specifications and other
information deemed necessary by the Utilities Engineer. A permit and inspection
fee of ten dollars ($10.00) shall be paid to the Director of Finance at the time
the application is filed. (Ord. 2801, 9-24-73; amd. Ord. 2845, 4-15-74)
3. A permit for a private sewage disposal system shall not become effective
until the installation is completed to the satisfaction of the Utilities Engineer.
He shall be allowed to inspect the work at any stage of construction and, in •
any event, the applicant for the permit shall notify the Utilities Engineer when
the work is ready for final inspection, and before any underground portions
are covered. The inspection shall be made within forty eight (48) hours of the
receipt of notice by the Utilities Engineer whenever possible. (Ord. 2801,
9-24-73; amd. Ord. 2847, 5-6-74)
4. The type, capacities, location and layout of a private sewage disposal system
shall comply with all recommendations of the Seattle-King County Health
Department. Field tests and a site survey shall be made before any permit is
issued for any private sewage disposal system employing subsurface soil
absorption facilities. No septic tank or cesspool shall be permitted to discharge
to any public sewer or natural outlet. (Ord. 2801, 9-24-73)
5. Pursuant to RCW 35.67.190, all property owners within the area served
by a sewerage system shall be compelled to connect their private drains and
sewers with the sewerage system, or suffer a penalty. Connection to the public
sewer system shall not be compulsory except under those situations detailed
in Washington Administrative Code chapter 248-96, subsection 060, as may
be amended from time to time, or City Code Section 8-702(D). Any property
owner not compelled to connect to the sewerage system and choosing not
to connect to the City sewerage system shall be penalized an amount equal
to the charge that would be made for sewer service if the property was
connected to the sewerage system. All such penalties shall be considered
revenue of the sewerage system. After connection to the sewerage system,
all septic tanks, cesspools and similar private sewage disposal facilities shall
be abandoned and filled with suitable material, provided however, the owner
of the subject premises may suitably clean the septic tank to utilize same and
any adjoining drain fields system for the proper disposal of storm waters. (Ord.
4169, 8-15-88)
988
8-703 8-704
6. The owner shall operate and maintain the private sewage disposal facilities
in a sanitary manner at all times, at no expense to the City.
7. No statement contained in this Chapter shall be construed to interfere
with any additional requirements that may be imposed by the Health Officer.
(Ord. 2801, 9-24-73)
8-704: BUILDING SEWER PERMITS:
(A) No unauthorized person shall uncover, make any connections with or openings
into, use, alter or disturb any public sewer or appurtenance thereof without
first obtaining a written permit from the Utilities Engineer or his duly
authorized representative. Permission to make connection to the public sewer
shall consist of either
1. A developer extension agreement, wherein permission is granted to make an
extension to a public sewer, or
2. A building sewer permit, wherein permission is granted to make a connection
from private property to a public sewer.
(B) A building sewer permit shall include permission to construct a side sewer
whenever it is required to complete connection.
(C) There shall be three (3) classes of building sewer permits:
1. Fol. residential service;
2. For commercial service; and
3. For industrial service.
(D) In each case the owner or his duly authorized agent or representative shall make
application in writing on a special form furnished by the City for said purposes.
The permit application shall be supplemented by any plans, specifications or
other information considered pertinent in the judgment of the Utilities Engineer
or his duly authorized representative. The permit and inspection fees shall be
as follows:
1. The sum of twenty dollars ($20.00) for a residential building sewer permit.
2. The sum of fifty dollars ($50.00) for a business or commercial building
sewer permit.
3. The sum of one hundred dollars ($100.00) for an industrial building sewer
permit.
4. The sum of five dollars ($5.00) for a permit for the necessary repair of any
of the above sewer connections.
and all such fees shall be paid to the Director of Finance or his duly designated
representative at the time the application for such permit is filed.
(E) In addition to other permits and fees, there will be an inspection/approval fee
for on-site replacement and improvements which shall be identical to that
specified in Chapter 8, Title IX of Ordinance No. 1628 and any subsequent
amendments thereto. (Ord. 3832, 8-13-84)
884
8-705 8--706
8-705: INDEPENDENT SEWERS; COST OF: A separate and independent
building sewer shall be provided for every building; except where one
building stands at the rear of another on an interior lot and no private sewer is available
or can be constructed to therear building through an adjoining alley, court, yard, or
driveway, the building sewer from the front building may be extended to the rear
building and the whole considered as one building sewer. (Ord. 1552, 6-12-56)
Old building sewers may be used in connection with new buildings only when they are
found, on examination and tests by the Utilities Engineer, to meet all requirements of
this Chapter. (Ord. 1552, 6-12-56 amd. Ord. 2847;5-6-74)
All costs and expense incident to the installation and connection of the building sewer
shall be borne by the owner or applicant of the premises in question. The owner shall
indemnify the City against any loss or damage that may directly or indirectly be
occasioned by the installation of the building sewer. (Ord. 1552, 6-12-56)
8-706 as amended: SPECIFICATIONS FOR BUILDING SEWERS: The building
sewer shall be cast iron soil pipe, ASTM specification A74-42 or
equal; vitrified clay sewer pipe, ASTM spec. C13-44T, PVC plastic pipe ASTM spec.
D3034 or equal, or other suitable material approved by the Utilities Engineer. Joints
shall be tight and waterproof. Any part of the building sewer that is located within
ten feet (10') of a water service pipe shall be constructed of cast iron soil pipe with
push-on rubber gasket joints. Cast iron pipe with push-on rubber gasket joints may
be required by the Utilities Engineer where the building sewer is exposed to damage
by tree roots. If installed in filled or unstable ground, the building sewer shall be of
cast iron or Ductile iron pipe with push-on rubber gasketed joints.
The size and slope of the building sewer shall be subject to the approval of the
Utilities Engineer, but in no event shall the diameter be less than six inches (6").
The slope of such six inch (6") pipe shall be not less than one-eights inch (1/8") per
foot.
Whenever possible the building sewer shall be brought to the building at an elevation
below the basement floor. No building sewer shall be laid parallel to or within three
feet (3') of any bearing wall, which might thereby be weakened. The depth shall be
sufficient to afford protection from frost. The building sewer shall be laid at
uniform grade and in straight alignment insofar as possible. Changes in direction
shall be made with properly curved pipe and fittings.
In all buildings in which any building drain is too low to permit gravity flow to the
public sewer, sanitary sewage carried by such drain shall be lifted by approved
artificial means and discharged to the building sewer.
All excavations required for the installation of a building sewer shall be open trench
work unless otherwise approved by the Utilities Engineer. Pipe laying and back fill
shall be performed in accordance with ASTM spec. C12-19 and APWA spec. Sect. 60
except that no back fill shall be placed until the -work has been inspected.
976
8-706 8-709
All joints and connections shall be made gastight and watertight, and installed in
accordance with APWA spec. 62-3.98A.
Clay pipe joints shall be in conformance with ASTM C-425. Concrete pipe joints
_shall conform with ASTM C-443. Ductile and cast iron pipe push-on joints shall
conform with ANSI A-21.11. PVC pipe jointsshall conform with ASTM D 2680.
Other jointing materials and methods may be used only by written approval of the
Utilities Engineer. •
8-707 as amended: CONNECTION OF BUILDING SEWER TO PUBLIC
SEWER: The connection of the building sewer into the public sewer
shall be made at the "Y" branch, if such branch is available at a suitable location.
If the public sewer is twelve inches (12") in diameter or less, and no properly located
"Y" branch is available, the owner shall at his expense install a "Y" branch in the •
public sewer at the location specified by the Utilities Engineer. The new "Y" branch
shall be installed with a cast iron double strap sewer saddle tee with the existing pipe
drilled and rasped open. Where the public sewer is greater than twelve inches (12")
in diameter, and no properly located "Y" branch is available, a neat hole may be
drilled into the public sewer to receive the building sewer, with entry in the down-
' •
' stream direction at an angle of about forty five degrees (45°). A forty five degree
_ (45°) ell may be used .to make such connection, with the spigot end cut so as not to
extend past the inner surface.of the public sewer. The invert of the building sewer
at the point of connection. shall be at the same or at a higher elevation than the invert
of the public sewer. A smooth, neat joint shall be made and the connection made
secure and watertight by encasement in concrete. Special fittings may be used for
the connection when approved by the Utilities Engineer. (Ord. 3055, 8-9-76)
8-708: INSPECTION: The applicant for the building sewer permit shall
notify the Utilities Engineer when the building sewer is ready for
inspection and connection to the public sewer. The connection shall be made under the
supervision of the Utilities Engineer or his representative.
8-709: PRECAUTIONS WHILE BUILDING: All excavations for building
•
sewer installation shall. be guarded with barricades and lights and such
other precautions as are reasonably adequate to protect the public from accident and
_ injury. Streets, sidewalks, parkways and other public property disturbed in the course
of the work shall be restored in a manner satisfactory to the City.
A surety bond in an amount deemed sufficient and determinedbytheUtilities Engineer,
but in no event less than five hundred dollars ($500.00), shall be furnished and
deposited with the City to indemnify the City against any loss, damage, liability in
connection with such sewer work.
•
459;865;1073;774;976
8-710 8-710
8-710: USE OF PUBLIC SEWERS: No person shall discharge or cause to be
discharged any storm water, surface water, ground water, roof run-off,
subsurface drainage, cooling water or unpolluted industrial process watersto any
sanitary sewer. Storm water and all other unpolluted drainage shall be discharged to
such sewers as are,specifically designated as combined sewers or storm sewers, or to a
natural outlet approved by the Utilities Engineer.Industrial cooling water or unpolluted
process waters may be discharged, upon approval of the Utilities Engineer, to a storm
sewer combined sewer or natural outlet.
Except as hereinafter provided, no person shall discharge or cause to be discharged any
of the following described waters or wastes to any public sewer:
(A) Any liquid or vapor having a temperature higher than one hundred fifty degrees
(150°) F.
•
(B) Any water or waste which may contain more than one hundred (100) parts per
million, by weight, of fat, oil or grease.
(C) Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive
liquid, solid or gas.
(D) Any garbage that has not been properly shredded.
(E) Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers,tar,
plastics, wood, paunch manure, or any other solid or viscous substance capable
of causing obstruction to the flow in sewers or other interference with the
proper operation of the sewage works.
(F) Any waters or wastes having a pH lower than five and five-tenths (5.5) or
higher than nine (9.0) or having any other corrosive property capable of
causing damage or hazard to structures, equipment, and personnel of the
sewage works.
(G) Any waters or wastes containing a toxic or poisonous substance in sufficient
quantity to injure or interfere with any sewage treatment-process, constitute a
hazard to humans or animals, or create any hazard in the receiving waters of
the sewage treatment plant.
(H) Any waters or wastes containing suspended solids of such character and
quantity that unusual attention or expense is required to handle such materials
at the sewage treatment plant.
(I) Any noxious or malodorous gas or substance capable of creating a public
nuisance.
459;564;1164;865;774
8-711 8-712
8-711: GREASE, OIL AND SAND INTERCEPTORS:' Grease, oil and sand
interceptors .shall be provided when, in the opinion of the Utilities
Engineer, they are necessary for the proper handling of liquid wastes containing grease
in excessive amounts, or any flammable wastes, sand, and other harmful ingredients;
except that such interceptors shall not be required for private living quarters or
dwelling units. All interceptors shall be of a type and capacity approved by the Utilities
Engineer, and shall be so located as to be readily and easily accessible for cleaning and
inspection.
Grease and oil interceptors shall be constructed of impervious materials capable of
withstanding abrupt and extreme changes in temperature. They shall be of substantial
construction, watertight, and equipped with easily removable covers which when
bolted in place shall be gastight and watertight. Where installed, all grease, oil and sand
interceptors shall be maintained by the owner, at his expense, in continuously
efficient operation at all times. (Ord. 1552, 6-12-56 amd. Ord. 1847, 5-6-74)
(A) Grease and oil interceptors shall be required on all restaurants, garages and
gas station premises and shall be so situated as to intercept only the sources
of grease and oil wastes but excluding domestic or human wastes. (Ord.
3055, 8-9-76)
8-712: PRELIMINARY TREATMENT OF WASTE MATTER: The admission
- into the public sewers of any waters or wastes having (a) a five (5) day
Biochemical Oxygen Demand greater than three hundred (300) parts per million by
weight, or (b) containing more than three hundred fifty (350) parts per million by
weight of suspended solids, or (c) containing any quantity of substances having the
characteristics described in certain Sections of this Chapter, or (d) having an average
daily flow greater than two percent (2%) of the average daily sewage flow of the City,
shall be subject to the review and approval of the Utilities Engineer.Where necessary in
the opinion of the Utilities Engineer, the owner shall provide, at his expense, such
preliminary treatment as may be necessary to, (a) reduce the Biochemical Oxygen
Demand to three hundred (300) parts per million and the suspended solids to three
hundred >fifty (350) parts per million by weight, or (b) reduce objectionable
characteristics or constituents to within the maximum limits provided for in certain
Sections of.this Chapter, or (c) control the quantities and rates of discharge of such
waters or wastes. Plans, specifications, and any other pertinent information relating to
proposed preliminary treatment facilities shall be submitted for the approval of the
Utilities Engineer and the Department of Ecology of the State of Washington and no
construction of such facilities shall be commenced until said approvals are obtained
in writing. (Ord. 1552, 6-12-56 amd. Ord. 1847, 5-6-74 amd. Ord. 3055, 8-9-76)
Where preliminary treatment facilities are provided for any waters or wastes, they shall
be maintained continuously in satisfactory and effective operation, by the owner at his
expense. •
No statement contained in this Chapter shall be construed as preventing any special
agreement or arrangement between the City and any industrial concern whereby an
industrial waste of unusual strength or character may be accepted by the City for
treatment, subject to payment therefor by the industrial concern.
589
8-713 8-715
8-713: MANHOLES: When required by the Utilities Engineer, the owner of any
property served by a building sewer carrying industrial wastes shall
install a suitable control manhole in the building sewer to facilitate observation,
sampling and measurement of the wastes. Such manhole, when required, shall be
accessibly and safely located, and shall be constructed in accordance with plans
approved by the Utilities Engineer. The manhole shall be installed by the owner at his
expense, and shall be maintained by him so as to be safe and accessible at all times.
i
8-714: EXAMINATION OF WATER AND SEWAGE: All measurements, tests
and analyses of the characteristics of water and wastes to which
reference is made in this Chapter, shall be determined in accordance with Standard
Methods for the Examination of Water and Sewage, and shall be determined at the
control manhole, or upon suitable samples taken at said control manhole. In the event
that no special manhole has been required, the control,manhole shall be considered to
be the nearest downstream manhole in the public sewer to the point at which the
building sewer is connected.
The Utilities Engineer and other duly authorized employees of the City bearing proper
credentials and identification shall be permitted to enter upon all properties for the
purposes of inspection, observation, measurement, sampling and testing, in accordance
with the provisions of this Chapter. (Ord. 1552, 6-12-56; amd. Ord. 1847, 5-6-74)
8-715: SEWER CHARGES:
(A) The monthly rates and charges for sewage disposal service shall be as follows:
1. Single family dwelling units: Four dollars ninety cents ($4.90).
2. All other users: A charge of four dollars ninety cents ($4.90) per month for
each nine hundred (900) cubic feet of water used by apartments, multiple
dwelling units of every type and number, business, commercial, industrial and
all other users.
3. Charges for sewer service without City water: In the event that water
obtained from sources other than purchased from the City is either discharged
or drained into the sewer system, single family dwellings and other users shall
be charged by one of the two (2) following methods:
a. Fifteen dollars thirty five cents ($15.35) per single family residence.
(Includes $10.45 Metro charge).
b. Other than single-family dwellings, the Director of Public Works shall install
a water meter into such private water system at cost to property owners and
the method of billing shall be in compliance with Section 8-715(A)2. (Ord.
4194, 12-12-88, eff. 1-1-89)
(B) Whenever the use of water is such that. a portion of the water used does not
flow into the City sewer system but is lost by evaporation or used in irrigation,
589
8-715 8-715
B) manufacturing or any other use, and the person in control provides proof of this
fact, such person may apply for the installation of a separate sewer exempt
meter to measure the amount of water so used or lost and no charge shall be
made for sewage because of water so used or lost. A sewer exempt meter
application will be made in- the same manner as a regular water meter
installation. All sewer exempt meters. shall be located at the property line or
adjacent to, the regular meter; provided, however, an evaporation exemption
may be granted to coin-operated and commercial laundries without the
installation of a submeter. Such exemption shall be an eleven percent (11%)
reduction in chargeable water consumption .for commercial and industrial
laundries and a three percent (3%) reduction in chargeable water consumption
for coin-operated laundries.
(C) Upon application made to the City Council by any,municipal or quasi-municipal
corporation including school, hospital or fire district, County of King, or similar
public entity, for sewer services outside the City limits and upon approval of
hook-up or connection therefor by the City Council, the rates to such special
users shall be one and one-half (1'/z) times the basic rates applicable to
resident users for similar services, plus all other charges (including hook-up,
connection .and fees levied or assessed by "Metro") applicable to such
services. (Ord. 3055, 8-9-76)
(D) In addition to the foregoing charges specified in this Section, the following rates
shall be charged:
1. A charge of ten dollars forty five cents ($10.45) per month, payable to Metro
for each single-family dwelling unit.
2. A charge of ten dollars forty five cents ($10.45) per month, payable to Metro
for each nine hundred (900) cubic feet of water used by apartments, multiple
dwelling units of every type and number, business, commercial, industrial and
all other users. (Ord. 4194, 12-12-88, eff. 1-1-89)
3. Any additional charges hereafter imposed by Metro under the "Industrial Cost
Recovery" or "Industrial Waste Surcharge" programs required under the FWPCA
(PL 92-500), section 204, or as same may be amended hereafter plus fifteen
percent (15%) thereof as an additional charge for the City's cost of
implementing such programs.
4. The following persons are eligible to receive their water and sewer services
for one dollar ($1.00) per month, for the first nine hundred (900) cubic feet of
water per month ($.75 per month for water/$.25 per month for sewer). Any
excess shall be charged as provided in Section 8-1413(B) of Chapter 14,
Water, of Title VIII (Health and Sanitation) relating to water services.
(a) Every single person, sixty two (62) years of age or older, and every
single person totally and permanently disabled, residing in a single-family
dwelling, that is separately metered for water usage, either as owner,
-- purchaser, or renter, whose income from all sources is seven hundred twenty
seven dollars fifty cents ($727.50) per month or less, and eight thousand seven
hundred thirty dollars ($8,730.00) per annum or less, or as amended.
589
8-715 8-715
D,4) (b) In the case of marital community, both parties, husband and wife,
residing in a single-family dwelling, either as owenr, purchaser, or renter, and
(1) Both spouses being sixty two (62) years of age or older, or
(2) One spouse is totally and permanently disabled and the other
spouse is over sixty two (62) years of age, or
(3) Both spouses are totally and permanently disabled
whose total income from all sources is one thousand ninety one dollars thirty
four cents ($1,091.34) per month, orless, and thirteen thousand ninety six
dollars eight cents ($13,096.08) per annum or less, or as amended.
(c) In order to qualify for reduced utility charges an affidavit of eligibility must
be tiled with the utility office accompanied by a.copy of the most recent
income-tax return or the most current two (2) month bank statements. If the
applicant is filing as a disabled person, the application must be accompanied by
an attending physician's statement verifying disability. For those parties who are
renters, the application must include an executed lease agreement which
specifies the term of the lease and that the lessee is responsible for the _
payment of the utilities. (Ord. 4213, 4-24-89)
(E) Every _such person, (if married, then either spouse) shall file with the Utilities
Department of the City, his or her statement, under oath, that he, she or they
are qualified to be charged a special rate for such utility services hereinabove
set forth and such statement to contain such other information as the Utilities
Engineer may prescribe including residence address, ownership or interest in
dwelling occupied by such applicant or applicants, the amount, source and
nature of all incomefrom any and all sources, together with the applicant's
unqualified promise to forthwith notify the City of any circumstances or change
in condition which would make the applicant or applicants ineligible to receive
said special rates.
All of such information shall be treated in confidence and all such applications
and statements shall only be available for inspection by authorized personnel of
the City. The Utilities Engineer shall have the right, whenever he deems it
necessary to require such statement on an annual basis.
(F) Whenever the use of the public sewer is such that infiltration and/or inflow is
evident from a private sewage facility, or a building sewer, where the sewer
flow is two (2) times in excess of the daily metered water, the Utilities Engineer
shall install a sewage meter and charge the regular monthly rates and charges
for customers in that class, for all infiltration and inflow and sewage that it
discharged into the public sewers. All costs and expenses incident to the
installation and connection of the sewer meter shall be borne by the owner or
applicant of the premises in question. (Ord. 3055, 8-9-76)
•
589
8-715 8-716
(G) Charges for Storm Drainage Utility: The following schedule.is hereby adopted
as the monthly charges to be paid to the City for storm drainage utility services:
1. Single family dwelling: $ 2.50
2. Low intensity: 12.39 per acre
3. Medium intensity: 17.92 per acre
4. High intensity: 23.11 per acre
5. Gravel pits: 24.92 per acre
6. City streets: 12.44 per acre
(Ord. 4104, 12-12-87, eff. 1-1-88)
The following are hereby established for certain senior citizens who are
economically disadvantaged as herein set forth:
Every single person sixty two (62) years of age or older and every single
person totally and permanently disabled residing in a single-family dwelling,
- either,as owner or purchaser, whose income from all sources is seven hundred
twenty seven dollars fifty,cents ($727.50) per month or less and eight thousand
seven hundred thirty dollars ($8,730.00) per annum or less or, in the case of
marital community, both parties, husband and wife, residing in a single-family
dwelling, either as owner or purchaser, andboth spouses being sixty two (62)
years of.- age or older whose total income from all sources is one thousand
ninety one dollars thirty"nine cents ($1,091.39) per month or less and thirteen
thousand ninety six dollars eight cents (13,096.08) per annum or less shall pay
the following rate for storm drainage service relating to such single-family
dwelling in which such eligible person or persons permanently reside:
$1.00 per month. (Ord. 4194, 12-12-88, eff. 1-1-89)
8-716: BILLINGS 'AND COLLECTIONS: All bills for sewer disposal service as
set forth in this Chapter or as same may be amended from time to
time, shall become due and payable at the office of the Director of Finance, or such
other place as the City may designate, not later than fifteen (15) days from date of
billing. If not so paid, any such account shall_thereupon become delinquent.
If no timely payment is made as herein set forth and the account thus becomes
delinquent, the Director of Finance, or her duly authorized representative shall mail to
the user a notice in writing, postage prepaid and mailed to the last known address of
such user, that if such delinquent sewer charges are not paid forthwith, the Utilities
Engineer shall be directed to cut off the water service to the premises and to enforce
the lien upon the property to which such service has been rendered and such lien shall
(
589
8-716 8-716 •
be superior to all other liens or encumbrances except those for general taxes and
special assessments. Such liens may be foreclosed by the City in the manner provided
by law for the enforcement of the same, and for delinquent sewer charges, in addition •
to all other remedies permitted. There will be an additional sum of ten dollars ($10.00)
charged for the expense of turning the water off and on. Any such water service cut off
shall remain disconnected until all charges to the City plus penalties, together with the
additional sum of ten dollars ($10.00) for turning the water on, shall have been paid.
In lieu of any notice by. mail, the Utilities Engineer or the Director of Finance, or their
duly authorized representatives, may cause a delinquent sewer charge notice to be
served personally upon such user or occupant. Failure to receive mail properly
addressed to such, user or occupant shall not be., a valid defense for failure to pay any
such delinquent charges. Any change in oWnership of property or change In mailing
address must be properly filed in writing with the office of the Director of Finance within
fifteen (15) days after such change of status. (Ord. 2847, 5-6-74)
•
(See following page for Section 8-717)
589
•
8-717 8-717
8-717: CHARGES FOR PROPERTY NOT PREVIOUSLY ASSESSED:
(A) The special connection charge imposed shall be paid into the Waterworks Utility
Construction Fund.
The charge shall be paid in cash whenever such connection is requested, or
application may be. made by such property owner to provide for the payment
thereof by an installment contract if the amount is in excess of five hundred
dollars ($500.00), with interest at the rate of ten percent (10%) per annum,
computed annually on unpaid balances, which contract shall provide for a
- minimum down payment of not less than ten percent (10%) of such total
connection charges hereinabove set forth, payable upon execution of such
contract and the balance thereof to be paid in not more than twenty (20)
quarterly installments payable on each January 1, April 1, July 1, and October
1. Such installment contracts shall provide that any unpaid balance may be paid
in full, in any year at the timethe first quarterly payment of such year is due
and payable, shall describe the property served by the water, and shall be duly
acknowledged by the property owner and be recorded by the Public Works
Director in the office of the County Auditor at the expense of such property
owner. Delinquent payments under such installment contracts shall be a lien
upon the described property as provided for in RCW 35.67.200, and
L enforceable in accordance with RCW 35.67.220 through 35.67.280. As an
additional and concurrent method of enforcing such lien, the water service to
such property may be disconnected in accordance with RCW 35.67.290 and
this Code .until such time,as all delinquent payments have been paid in full.
• Upon full payment of such installment contract, the Public Works Director, on
behalf of the City of Renton, shall execute and deliver unto the property owner
a release of such lien, which shall be recorded, at the expense of the property
owner, with the King County Auditor's office. All installment payments so made
shall be applied first to interest accrued up to date, and the balance to
principal.
(B) In addition to sewer connection permit fees as 'required by ordinance and the
rules and regulations promulgated thereunder, there is hereby imposed upon,
and theowners of properties which, have not previously been assessed or
charged or borne an equitable share of the cost of the City's sewer distribution
system,shall pay, prior to any connection to a City sewer main, one or more of
four (4) special connection charges, herein defined, in an amount to be
computed under the following paragraphs of this Section.
1. Latecomer Fees. The imposition, collection, payment, and other specifics
concerning this charge are dealt with elsewhere in this Code.
2. Special Assessment Charge. The special assessment charge is a charge for
the historical costs for the sewer collection system, which system shall include
the sewer collection mains that lie adjacent to or near properties that would
benefit directly therefrom, that were not installed by L.I.D:'s or by a private
developer under a latecomer agreement.
•
589
8-717 8-717
B,2) (a) The number of units of property frontage to be served by the sewer
distribution system, determined in the manner prescribed in RCW 35.44.030.040
and .047 for determining "assessable units of frontage", shall be multiplied by
the actual local improvement assessment per unit of frontage for such facility
for the year in which the sewer main to which the property is to be connected
was constructed and accepted as complete by the City.
(b) In addition to the aforestated cost of "assessment" there shall be a
_charge of ten percent (10%) per annum added to such cost, but in no case
shall such charge be in excess of one hundred fifty percent (150%) of the
original assessment cost. Interest charges should be simple interest and not
compound interest.
(c) Such special connection charge for property abutting on a street in which
a sewer can be constructed or extended to serve such property but can be
connected without actual construction or extension, shall be computed as if the
sewer was so constructed or extended; and the special connection charge for
property located back from the margin of the street in which the sewer exists
and outside the assessment. district created therefor shall be made giving
consideration to the distance of said property from the street margin. In no case
shall credit be allowed for the cost of extra length of side sewer required for
connection to the City's sewerage system; provided, however, that in cases
where application of the foregoing formula to a particular parcel of property
results in a charge, which because of unusual conditions, or conditions peculiar
to said property only, is in excess of charges to similar properties, the Public
Works birector is authorized to reduce the special connection charge to such -
an amount charged to properties similarly situated.
3. Special Utility Connection Charge. The special utility connection charge which
shall be assessed against any property which has not participated in the
development of the sewer system, which system shall include lift stations, force
mains, interceptors and other collection mains, shall be assessed at the rate of:
(a) Three hundred dollars ($300.00) per single-family residence and mobile
home dwelling;
(b) One hundred seventy five dollars ($175.00) per living unit of an
apartment, condominium, cooperative rental, time-share, motel, hotel, or similar
multi-family occupancy residential structure;
(c) For all other properties except City properties, four cents ($.04) per
square toot of property connected but not less than three hundred dollars
($300.00);
(d) Fees are incurred upon the granting by the City of a building permit, but
are payable at the time construction inspection permits are issued for public
sewer extension. All other sanitary sewer service applicants shall pay these
fees at the time of building sewer application;
589
8-717 8-717
B,3) (e) Fees are due immediately, notwithstanding the prior paragraph, if the
party owing the fee sells to a third party, unless the third party agrees to pay
the charge, in writing, with the amount owing to the Cityset forth-in that writing,
and further the City agrees that the third party shall be responsible for that fee
after determination that such an agreement would be in the City's best interest.
The burden of establishing the agreement would be on the party owing the fee
and not on the City, and would be in the City's best interest;
(f) When the phrase "property which has not participated in development of
the system" is used in this Section, it shall mean property which has not paid a
special utility connection charge for the property based upon the square footage
of the property that is to be served by the utility. For example, one single-family
residence on a five (5) acre tract which has paid three hundred dollars
($300.00) under this Section to connect to a sewer system will have paid only
for one seven thousand five hundred (7,500)square foot lot at the rate of four
cents ($.04). Additional charges would be applied for any additional
development on the property.
Property that was developed before the effective date of the first connection
charge ordinance in 1965. is exempted from the connection charge. Any
rebuilding or additions to exempted property that does not require additional
water usage such that a'larger domestic meter is necessary will not trigger a
new connection charge. ,However, when property is redeveloped or the use
_ changed or intensified such that a larger domestic water meter or additional
domestic water meters are necessary or when no domestic water meter was
obtained before, such as property on a well, then any application for the initial
water meter or a larger water meter will trigger a utility connection charge. For
the purposes of this policy, such property when applying for an initial or larger
water meter shall be property that has not been previously assessed.
When property is redeveloped and the use intensified such that a four inch (4")
(residential) sanitary sewer stub is required to bereplaced with a six inch (6")
(commercial) sanitary sewer stub, to the sewer main, then any application for
the sewer construction permit will trigger a utility connection charge.
(g) No special utility connection charge will be collected on City-owned
properties. The benefits to the utility from the use of other City properties such
as utility easements, lift stations, and other benefits offset the amount of the
utility connection charge fee;
(h) When calculating the area to be charged the connection charge,
undeveloped greenbelt and major easements within the property shall not be
included in the square footage for the calculation of the charge. When
determining whether property is undeveloped greenbelts or major easements,
the inquiry should be to recorded easements or dedications or restrictions on
the comprehensive plan or zoning maps or City policies that would prevent
development or significant usages. This exemption is intended not to charge
property that is undevelopable;
589
8-717 8-720
B,3) (i) There shall be noother exemptions from the special utility connection
charge. Any party extending utilities that may serve other than the party's
property may request a latecomer's agreement from the City. Any party required
to oversize utilities may request that the utility participate in the cost of the
project.
4. Inspection and Approval Fees. In addition to other permits and fees, there
will be an inspection/approval fee for on-site and off-site replacement and
improvements which shall be identical to that specified in Chapter 8, Title IX
and any subsequent amendments thereto. •
(C) If any suchproperty for which a special connection charge has been paid later
becomes subsequently included in a local improvement district for the
construction of a sewer of the same or similar nature, then the principal amount
sopaid shall be credited to the assessment against such property and such
amount shall be paid from the Waterworks Utilities Fund into such Local
Improvement District Fund. (Ord. 4205, 2-20-89)
8-718: FACILITY AND TRUNK CONNECTION CHARGES: (Rep. by Ord.
3547, 5-18-81)
8-719: PUBLIC SEWER EXTENSION: Extensions to the public sewer may be
permitted by developer extension agreements. The Utility Engineer shall
prepare "Conditions and Standards for Construction of Utility Developer Extension". All
developer extensions shall abide by these Standards.
These Standards shall be updated and modified, from time to time, in accordance with
good, effective practices, the "Standard Specifications for Municipal Public Works
Construction of the American Public Works Association" to the "Recommended
Standards for Sewage Work".
8-720: PUBLIC SEWER SPECIFICATIONS:
(A) Public sewers shall conform to the latest standards of "The Standard
Specifications for Municipal Public Works Construction" of the American Public
Works Association and to the "Recommended Standards for Sewage Works" of
the Great Lake-Upper Mississippi River Board of State Sanitary Engineers, and
are subject to review by the Department of Ecology of the State of Washington.
(B) The public sewer shall be ductile iron, AWWA C 151, cast iron, AWWA C 106,
or C 108, with Type II pushon or Type III mechanical joints, together with
cement mortar lining three thirty-seconds inch (3/32") in accordance with
AWWA C 104, or polyvinyl chloride (PVC) plastic pipe ASTM D 3034, or
concrete nonreinforced ASTM C14 Class 2, or concrete reinforced ASTM C76;
rubber gaskets for concrete pipe shall meet ASTM C443 standards; rubber
gasket for PVC pipe shall meet ASTM 1869 standards. Minimum size shall be
eight inches (8") diameter.
589
8-720 8-721
(C) Manholes shall be installed at the end of each line, at all changes of grade,
size or alignment, at distances no greater than four hundred feet (400') for fifteen
inch (15") diameter sewers or smaller. Greater spacing may be permitted in
larger sewers. Manholes shall be a minimum of forty eight inches (48") diameter,
shall be precast concrete or cast in place concrete, with steel reinforcement;
steps will be placed at one foot (1') spacing, conforming to current safety
regulations.
The manhole covers shall be twenty four inches (24") diameter cast iron or
aluminum frame and covers. No inside drop connections will be allowed. All
connections to the manhole shall match the existing inverts or have an outside
drop connection.
(D) Lift Stations. All lift stations, both public and for private building sewers shall
have alarm and standby emergency operation systems. All lift stations shall
meet or exceed the specifications of Chapter 30 of "Recommended Standards
for Sewage Works".
(E) Comprehensive Sewerage Plan. All public sewer extensions shall conform to
the standards and be consistent with the City Comprehensive Sewerage Plan.
(F) Public sewers installed in filled or unstable ground, in areas with high ground
water levels, or in areas where the potential for infiltration occurs, may be
required to be cast or ductile iron pipe, or PVC plastic D-3034 pipe.
8-721: PENALTIES FOR VIOLATIONS OF REGULATIONS: It shall be unlawful
for any person to maliciously, knowingly, wilfully or negligently
break, damage, destroy, uncover, deface or tamper with any structure, appurtenance
or equipment which is part of the City sewage works.
Any person violating any provision of this Ordinance or who shall fail to do any act
he is required to do under the provisions of this Ordinance shall upon conviction be
punished by a fine not exceeding five hundred dollars ($500.00) or imprisonment not
exceeding six (6) months, or by both such fine and imprisonment. Each day any violation
of this Ordinance shall continue shall constitutes separate offense. (Ord. 3055, 8-9-76,
eff. 7-1-76)
681
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•November 21, 1989 ,.11 c,-,
SEA20080.BO ,V` .•r+t1
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City of Renton .
200 Mill Avenue
Renton, Washington 98055
.
Attention: Ron Olsen, Utilities Engineer • 1 ;VI -`'" �
, V:\Y
w 'ic,.10
Subject: Pipeline Materials for the Aquifer Protection 1\ ,- '
Ordinance Cr r �`TpN
Sl Dol.p`-
Following our meetings of the past two weeks; we have
�fiii,� c�
prepared the attached Table 1 which shows Pipeline Material
Alternatives for pipelines crossing the City of Renton's
Aquifer Protection Area, Zone 1. The accompanying Table 2
.;u contains a list of considerations which should be evaluated
when selecting alternative pipe materials from Table 1.
These materials are intended to be used in pipelines ,
carrying storm sewage, sanitary sewage, or landfill
leachate. They are not intended for more specialized
pipeline service such as transmission of petroleum •
products.
All materials listed in Table 1 are generally considered
suitable for the service indicated, based on accepted
practice and their commercial availability. Some materials
are better suited than others; however, there is no
clearcut best choice of pipeline material for a given
service. For brevity, the list of suggested material specs
does not include the many specifications which cover
details such as gaskets, coatings, etc.
It is our understanding that the City will incorporate this
list by reference into the Aquifer Protection Ordinance to
provide guidance concerning allowable pipeline materials
within Zone 1 of the Aquifer Protection Area, for both new
construction and rehabilitation or replacement of existing
pipelines.
As we have emphasized in our meetings, this list is likely
not all-inclusive; it is only a guideline. It is
-= impossible to condense all pipeline materials selection
information into a short table or text. It is essential
CH2M HILL Seattle Office 777 108th Avenue,N.E.,Bellevue,Washington 206.453.5000
P.O.Box 91500,Bellevue,Washington 98009-2050
City of Renton
Page 2
November 21, 1989
SEA20080.B0
•
that each pipeline project be fully evaluated on a case-by-
case basis to arrive at the optimum engineering solution.
Please call us if you have any questions.
Sincerely,
CH2M HILL
C:O31;Arthur L. Storbo, P.E.
Attachment
•
•
'., Engineers .
Planners
MOM Economists
AMEN Scientistsr 761 fr1:1' it)
February 9, 1990 ; v 0 �� •l
SEA20080.BO
LE ;? 1990
1
OF .R
Mr. Ron Olsen, Utilities EngineerE� Dcp`•
City of Renton
jneCring
200 Mill Avenue
Renton, Washington 98055
Subject: Pipeline Repair Materials for Aquifer Protection
Dear Ron:
This letter is written . as followup to our recent conversations
regarding the use of' pressure grouts or gels for repairs to storm
and sanitary sewers within the.City's aquifer protection area. Our •
letter of November 21, 1989 did not specifically address use of
these materials.
Based on experience of others within CH2M HILL we recommend that
pressure grouts and gels not be used for rehabilitation of storm
or sanitary sewers within your aquifer protection area.
In our opinion, all of these product applications have only a
limited life expectancy, on the order of five years, and are not
a long term solution to ensure the tight sewer leakage requirements .
needed in the ' aquifer area. Further, these product applications,
usually installed. from inside the pipeline, are more applicable to
correcting infiltration problems than to correcting exfiltration
problems.
Sincerely,
CH2M HILL-
1. 411111"
Arthur L. Storbo, P.E.
•
CH2M HILL Seattle Office 777 108th Avenue,N.E,Bellevue.Washington 206.453.5000
'P.O.Box 91500,Bellevue,Washington 98009-2050
CONSTRUCTION STANDARDS FOR ZONE I OF AN APA •
The following practices will be followed for any construction which shall be undertaken
within Zone 1 of an APA:
1. No temporary storage of hazardous substances on a construction site shall
be permitted unless it can be demonstrated that no other feasible site
alternative exists. Should-hazardous substance storage be permitted, then
such storage shall be limited to a period not to exceed five (5) days.
2. The building permit shall specify those hazardous substances to be used
and/or temporarily stored on the construction site. These substances shall
be limited to the absolute minimum quantity required to accomplish the •
specific task.
3. All hazardous substances stored temporarily on a construction site shall be
contained within leak-proof membranes surrounded with temporary
retaining curbs. The location of temporary storage must be specified on
the building plans.
4. The construction staging area shall be located in Zone 1 only if no
• feasible site exists outside Zone 1. The staging area shall be limited to
the minimum area absolutely required. The staging site must be specified
on the approved building plans.
•
5. The use of petroleum products on site shall be Iimited during construction
to that amount which is absolutely required.
•
6. All refueling of construction equipment shall take place outside of Zone 1
if feasible. If suchrefueling is not feasible then the refueling area must
be covered with a leak-proof membrane surrounded by temporary
retaining walls.
7. All construction equipment shall be "bibbed to catch minor drips of
petroleum products. Bibs shall be drained and cleaned a minimum of
once each day.. Any vehicle which is known to be leaking petroleum
products including fuel or hydraulic fluid shall be prohibited on the
construction site.
8. The contractor shall comply with all applicable laws relating to disposal of
hazardous substances and shall be contractually responsible for ensuring
that all subcontractors comply as well.
APPENDIX E
SEPA CHECKLIST
APPENDIX F
BIBLIOGRAPHY
.w
CITY OF RENTON
SEWER COMPREHENSIVE PLAN
BIBLIOGRAPHY
COMPREHENSIVE SEWERAGE PLAN, Soos Creek Water and Sewer District.
Williams,Roth, & Associates, Inc. (1987)
FINDINGS AND RECOMMENDATIONS ON STRUCTURE OF METRO CHARGES TO COMPONENT
AGENCIES. Rate Structure Advisory Committee(September, 1978).
COMPREHENSIVE WATER PLAN, King County Water District No. 107. Yoshida, Inc. (October, 1986).
HEATHER DOWNS DRAINAGE BASIN FEASIBILITY STUDY FOR INTERCEPTOR SEWERS,City of Renton.
URS Company (1977).
1983 SEWER SYSTEM COMPREHENSIVE PLAN,King County Water District 108. Richard C.T.Li,Inc.(June,
1983).
KING COUNTY SEWERAGE GENERAL PLAN-FINAL EIS. Virginia Johnson (November, 1978).
ENGINEERING REPORT ON COMPREHENSIVE PLAN AND COST ESTIMATES FOR SEWAGE
COLLECTION SYSTEM, King County Water District No. 90. Hill, Ingman, Chase, & Co. (April, 1970).
WASTEWATER FACILITIES PLAN, City of Kent. URS Company, (March 1977).
COMPREHENSIVE PLAN FOR SEWER SANITARY SEWER SYSTEM,Bryn Mawr-Lakeridge Sewer District.
Hammond, Collier, &Wade -Livingstone Associates, Inc. (April, 1977).
SEWERAGE GENERAL PLAN FOR SKYWAY, King County Department of Public Works (August,1981).
COMPREHENSIVE SEWER PLAN 1983 SUPPLEMENT, City of Renton. Wilsey & Ham (1983).
COMPREHENSIVE SEWER PLAN, City of Tukwila. Horton Dennis & Associates (April, 1984).
1987 SEWER CLEANING, TV INSPECTION & GROUTING, City of Renton. Public Works Department
(February, 1987).
DEVIL'S ELBOW LIFT STATION DESIGN MEMORANDUM, Hammon, Collier, & Wade- Livingstone
Associates, Inc. (June 5, 1985).
AN ENGINEERING INVESTIGATION OF SANITARY SEWER FACILITY IMPROVEMENTS FOR THE EAST
RENTON, HEATHER DOWNS AND SOUTH HIGHLANDS AREAS, RH2 Engineering, P.S. (July, 1989).
AN ENGINEERING INVESTIGATION OF FACILITY IMPROVEMENTS FOR THE SOUTH HIGHLANDS
SANITARY SEWER BASIN,RH2 Engineering,P.S. (April, 1990).
PRELIMINARY DESIGN.REPORT FOR A SANITARY SEWER INTERBASIN TRANSFER FROM THE UPPER
HEATHER DOWNS BASIN TO THE LOWER MAPLEWOOD BASIN,Dodds Engineers,Inc. (May 23, 1990).
"CRITERIA FOR SEWAGE WORKS DESIGN", State of Washington Department of Ecology (October, 1985).
"SEISMOTECHTOMIC MAP OF THE.PUGET SOUND REGION, WASHINGTON, " U.S.G.S. Miscellaneous
Investigation Series Map 1-1613, Gower,H.D., J.C. Yount and R.S. Crosson (1985).
"PREDICTION OF STRONG GROUND MOTION IN THE PUGET SOUND. REGION - THE 1965
EARTHQUAKE," Bulletin of the Seismological Society of America,Page 905-922,Inhen,S.M.And D.M.Hadley
(1986).
WATER AND WASTEWATER RATES MANAGEMENT ANALYSIS,RH2 Engineering,P.S. (November 1989)
•
buK2
1 d
CITY OF RENTON
COMPREHENSIVE SEWER SYSTEM PLAN
JUNE 1991
PREPARED BY:
R112 ENGINEERING, P.S.
}
CITY OF RENTON
•
COMPREHENSIVE SEWER SYSTEM PLAN
JUNE 1991
City Council
Bob Edwards
Kathy Keolker-Wheeler
Nancy L. Matthews
• Toni Nelson
Jesse Tanner
Richard M. Stredicke
Theresa Zimmerman
Mayor
Earl Clymer
• Public Works Director
Lynn Guttmann
Attorney
Warren and Kellogg, P.S.
DSHS Regional Engineer
TABLE OF CONTENTS
•
CHAPTERI
Summary and Introduction 1-1
Purpose of Plan 1-1
Authorization • 1-2
Scope of Study 1-2
Existing Sewer System 1-3
Policies And Design Criteria 1-3
Land Use And Adjacent Systems 1-3
Key Issues 1-4
System Analysis 1-4
Sepa 1-4
Conclusions And Recommendations 1-5
System Improvements 1-6
How To Use This Plan 1-7
CHAPTER II
Overview Of Existing Sewer System 2-1
System History 2-1
System Components 2-2
Wastewater Collection Basins 2-2
Interceptors And Collection Systems 2-2
Existing Sewers 2-3
Interceptors 2-3
Metro Connections 2-5
Lift Stations 2-5
Telemetry And Control System 2-6
Operation And Maintenance 2-6
Definition of Terms 2-6
FIGURE 1 2-9
FIGURE 2 2-10
FIGURE 3 2-11
CHAPTER HI
Operational Policies 3-1
Introduction 3-1
Policies 3-1
Customer Service Policies 3-2
Financial Policies 3-5
Facility Policies 3-7
Organizational Policies 3-9
TABLE III-1 3-3
r .
•
I .
CHAPTER W
Land Use Policies,Adjacent Systems & Design Criteria 4-1
Introduction 4-1
Study Area 4-1
Land Use 4-2
City of Renton 4-2
Unincorporated King County 4-8
Sphere of Influence 4-8
Adjacent Utility Systems/Joint Use and Service Agreements 4-8
King County Water District No. 107 4-9
King County Water District No. 90 • 4-9
Cedar River Water and Sewer District 4-10
Soos Creek Water and Sewer District 4-10
City of Kent 4-11
City of Tukwila 4-11
Skyway Water and Sewer District 4-11.
Bryn Mawr-Lakeridge Water and Sewer District 4-12
Analysis and Design Criteria 4-12
Wastewater Flow rates - Definition 4-12
Wastewater Flow Criteria 4-13 .
Sanitary Sewer Design Criteria 4-15
Lift Station Design Criteria 4-17
TABLE IV-1 4-3
TABLE IV-2 4-4
TABLE IV-3 4-5
TABLE IV-4 4-5
TABLE IV-5 4-14
TABLE IV-6 4-17
FIGURE 4 4-6
FIGURE 5 4-20
FIGURE 6 4-21
FIGURE 7 4-22
CHAPTER V
System Analysis & Results 5-1
Introduction 5-1
Hydraulic Analysis 5-2
Structural Analysis 5-3
System-Wide Concerns 5-4
Metro - Interceptor Surcharge 5-4
Adjacent Utility Systems 5-4
•
Structural Problems 5-5
Earthquake Preparedness 5-6
Wastewater Collection Basins 5-7
May Creek Basin 5-8
Lower Cedar River Basin 5-10
Lake Washington East Basin 5-12
Black River Basin 5-15
• Lake Washington West Basin 5-16
Duwamish Estuary Basin 5-17
Lift Stations 5-17
Telemetry And Control System 5-26
Existing Telemetry System 5-30
• Proposed System Improvements • 5-31
Wastewater Quality 5-32
Domestic Wastewater 5-32
Industrial Waste 5-32
Wastewater Quality Problems 5-34
TABLE V-1 5-18
TABLE V-2 5-33
CHAPTER VI
Conclusions and Improvements 6-1
Introduction 6-1
CIP Rankings. 6-1
Capital Improvement Description 6-4
May Creek Basin 6-6
Lower Cedar River Basin 6-10
South Highlands Sewer Collection System Replacement 6-14
Lake Washington East Basin 6-15
North Highlands Sewer Collection System Replacement 6-18
Black River Basin 6-19
Scenic Hills Sewer Collection 6-21
Talbot Hill Sewer Collection System Replacement 6-21
Lake Washington 6-22
West Renton Sewer Collection System Replacement 6-23
Duwamish Estuary Basin 6-24
System Wide Improbements 6-24
Proposed Improvements By Priority 6-26
Proposed improvement By Project Type 6-26
Proposed Capital Improvement Plan Scheudle and Cash Flow 6-29
TABLE VI-1 6-3
TABLE VI-2 6-5
TABLE VI-3 6-25
TABLE VI-4 6-26
TABLE VI-5A 6-28
TABLE VI-5B 6-29
TABLE VI-6A 6-30
TABLE VI-6B 6-31
FIGURE VI-8 6-32
CHAPTER VII
Operation and Maintenance 7-1
Sanitary Sewer System Operation 7-1
Current Operation and Maintenance Program 7-1
Normal Operations 7-1
Organizational Structure 7-1
Communication 7-3
Equipment Availability 7-4
Records • 7-6
Emergency Operations 7-7
Preventive Maintenance 7-7
Sewage Lift Stations • 7-7
Wet Well Facilities 7-7
Sanitary Sewer System 7-7
Rolling Stock 7-8
Staffing 7-8
Maintenance and Operations Staff 7-8
Wastewater Utility Engineering Staff 7-9
•
TABLE VII-1 7-2
TABLE VII-2 7-4
TABLE VII-3 7-11
TABLE VII-4 7-11
TABLE VII-5 7-12
CHAPTER VIII
Financial Analysis 8-1
Wastewater Utility Expenses and Revenue Requirements - 8-1
Operating Costs and Revenues 8-2
Municipality of Metropolitan Seattle (METRO) Charges 8-2
City of Renton Operations and Maintenance 8-2
Costs 8-2
Revenue Requirements 8-8
CIP Costs and Revenues • 8-8
Capital Improvement Plan Costs 8-8
Revenue Sources for CIP 8-9
City Share • 8-9
Other Revenue Sources For CIP 8-10
Contingency Revenue Plan 8-13
Financial Analysis 8-13
TABLE VIII-3A 8-6
TABLE VIII-3B 8-7
FIGURE VIII-9 8-3
FIGURE VIII-10 8-4
FIGURE VIII-11 8-5
CHAPTER I
SUMMARY AND INTRODUCTION
_ CHAPTER I
SUMMARY AND INTRODUCTION
A. PURPOSE OF PLAN
The purpose of the Renton Comprehensive Sewer System Plan is to present policy and design
criteria and to recommend facility improvements. This plan will be used as a guide in
maintaining and improving the sanitary sewer system over the next five years in order to provide
the residents of the City with an effective, safe and reliable sewer system. This plan is not an
update to the Comprehensive Sewer Plan adopted in 1983; it is a complete re-evaluation of the
entire sanitary sewer system. A summary of this plan's findings and recommendations are
presented in this chapter.
The plan results froma study that evaluated the existing sanitary sewer system and developed
recommendations to resolve existing deficiencies and concerns,and to accommodate growth. The
improvements-identified in this plan are based on the requirements of the Washington State
Department of Health, Washington State Department of Ecology, and City Policy.
The City of Renton adopted its last Comprehensive Sewer Plan in 1983. That plan anticipated
growth in the system and proposed improvements but did not foresee all of the issues that have
arisen since that time: 1) concerns for groundwater protection, 2) significant increases in
construction cost, and 3) increases in land use densities. These issues and others are examined
in detail in this Comprehensive Sewer System Plan.
The Renton sanitary sewer system is large, and because of the topography, it is difficult to
comprehend. The condition of the current system, as well as the need for improvements, has
been documented in this report. Due to the complexity of this system and the number of issues
that must be addressed, this report is organized so that a reader may review a summary of it in
this chapter without reading the background or detailed information that led to those results.
The plan provides a recognized framework for making decisions about sanitary sewer service in
the City of Renton. It is intended to aid decision makers as well as users, including the
Wastewater Utility, City Council members,the Mayor and staff, builders,developers,community
groups, and other government agencies. The plan will be a useful tool in the following ways:
• As a framework for improvements and operations that govern sanitary sewer
system developments in the City's service area. The plan provides a basis for
allocating improvements and costs to new sanitary sewer system users such as
home andapartment builders, and commercial developers. It thus provides City
officials with partial direction for approving building permits and upgrading the
system.
1-1
t i
CHAPTER ONE
•
• To provide a guideline for improving the existing system so that each customer
receives adequate sanitary sewer service. It is intended that City officials be able
to use these guidelines to maintain a high quality of service at a reasonable cost.
• To provide a basis for accommodating changes that occur but that cannot be
forecast in the plan. To this end, the plan lists policy issues and operational
criteria that can be used to develop alternatives and directions for development,
improvements and operations.
_ Several members of the City staff have a detailed understanding of the City's sanitary sewer
system, and have provided valuable input for this plan. Mr. Richard Anderson, Mr. Randall
Parsons,Mr. Mike Benoit, Mr. David Christensen, Mr. Gary Morrison and Mr. Jack Crumley are
thanked for their assistance.
B. AUTHORIZATION
On November 7, 1988, the City of Renton authorized RH2 Engineering, P. S. to prepare the
update to the Comprehensive Sewer System Plan in conformance with the Chapter 173-240
WAC.
C. SCOPE OF STUDY
The scope of study includes the following:
Analyze the existing system to determine its deficiencies and needed improvements.
Document City Council policies regarding growth and annexation.
Coordinate plan with adjacent utility systems and identify areas for potential service area
boundary adjustments.
Estimate wastewater flow rates using land use designations.
Prepare a Capital Improvement Program and estimate construction costs.
Document,in summary form, the existing operations and maintenance program and make
recommended improvements and additions.
Analyze the recent financial performance of the sewer utility and develop' a financial
operating statement projection.
1-2
Summary and Introduction
D. EXISTING SEWER SYSTEM
The City of Renton owns, operates, and maintains its sanitary sewer system. This system
consists of approximately 153 miles of gravity sewer,.23 sewage lift stations and force mains,
and approximately 3000 manholes. Wastewater is discharged to METRO facilities at 55 locations
within the City from which it is conveyed to and treated by METRO's Renton Treatment Plant.
The existing sanitary sewer system is shown on FIGURE 1.
The City of Renton is divided into six major wastewater collection basins, each of which consist
of one or more subbasins. For the most part, these collections basins and subbasins follow the
natural drainage patterns of the Renton service area. These wastewater collections basins are
shown on FIGURE 1.
E. POLICIES AND DESIGN CRITERIA •
• Policies, design criteria, and standards used for planning and operating the sanitary sewer system
are based on laws and policies which originate from several sources. All these policies and
standards have the general purpose of providing an acceptable level of service to the sanitary
sewer customers. Policies presented in this plan include the following: customer service policies,
financial policies, facility policies, and organizational policies. Analysis and design criteria for
the sanitary sewer system are based on standards presented in the "Criteria for Sewage Works
Design" prepared by the Washington State Department of Ecology as well as standards set by
the Municipality of Metropolitan Seattle (METRO) and City of Renton.
F. LAND USE AND ADJACENT SYSTEMS
r-
Land use proposed in the City's-1983 Comprehensive Land Use Plan was used to estimate
wastewater flow rates at saturation conditions within the City. These saturation wastewater flow
rates were used to analyze existing sewerage facilities and to plan for the location and sizing of
new sewerage facilities. Existing land use designations are shown on FIGURE 6.
There are several adjacent utility systems surrounding the City's existing service area,which limit
the expansion of the City's sewer system. The greatest potential for expansion of the City's
sanitary sewer system is within the May Creek and East Renton areas which currently either do
not have existing or adequate sanitary sewer facilities. The adjacent utility entities are shown
on FIGURE 7. •
•
•
1-3
CHAPTER ONE
G. KEY ISSUES
This plan addresses the following key issues:
• Excessive infiltration and inflow.
• Extension of sanitary sewer service areas. "
• Aquifer protection and exfiltration from sanitary sewers.
• Sewer system deficiencies including hydraulic constraints, substandard facilities, and
replacement of old pipes.
• Annexation and sewer service outside City limits.
Several of these issues were also addressed during preparations of the 1983 Comprehensive
Sewer Plan.
H. SYSTEM ANALYSIS
A hydraulic and a structural analysis were conducted to determine how well the existing system
achieved current policies and technical, engineering standards. The plan identifies where the
system failed to meet those objectives and recommends improvements to the existing system or
construction of new facilities to achieve them.
A hydraulic analysis is a computer simulation of the existing system to determine its ability to
convey wastewater saturation flow rates. A computer model was developed and used to analyze
the system and to size future facilities. This computer model will continue to be used by the City
as an analytical, planning and management tool. A structural analysis, which is a visual
• inspection of the existing system, was also conducted and was based on video, as well as actual,
physical inspections.
The analysis revealed deficiencies that cover a broad range of areas. The hydraulic deficiencies
identified are inadequate slopes (inability to achieve carrying velocities), insufficient capacity to
handle wastewater flow rates,pipes that are less than 8-inches in diameter and sections that have
reverse slopes. Structural deficiencies identified are pipe sag, and root and grease problems. The -
Renton sewer system has these hydraulic and structural problems in varying degrees throughout
the system.
I. SEPA
A SEPA Checklist has been prepared for this plan and is presented in Appendix E. It is
anticipated that this proposed plan will not have a probable significant adverse impact on the
environment and that an environmental impact statement (EIS) will not be required. However,
1-4
Summary and Introduction
many of the projects proposed herein will require SEPA checklists and some will require an
environmental impact statement.
J. CONCLUSIONS AND RECOMMENDATIONS
In the development of this plan, the following conclusions were reached:
1. Two areas" are seriously deficient in capacity: 1) The East Renton area (which
includes South Highlands, Maplewood, and Heather Downs Subbasins) currently
has a moratorium on connections until capacity improvements have been made,
and 2) the Honey Creek Subbasin is at capacity and has some marginally reliable
facilities.
2. A substantial percentage of the system has reached the end of its useful life and
needs to be replaced. These areas include the Downtown, North Renton and
Highland.areas.
3. The City needs to perform detailed testing to obtain better engineering information
regarding the operation and hydraulic. behavior of the system. Specifically, a
detailed infiltration and inflow project should be performed as well as a video
inspection to affirm this plan's evaluation and provide an improved basis for
future planning.
4. Design and construction standards need to be modified for use in aquifer
protection areas. We recommend that a zero leakage policy be adopted for sewers
within the Downtown and Maplewood aquifers. A specific example of an
extremely high risk is METRO's Cedar River Interceptor sewer which currently
• traverses through the Downtown aquifer. We recommend that this sewer be
relocated so that a failure or leakage is manageable, and contamination of the
City's sole source aquifer is avoided. However,'a zero leakage policy requires a
special type of construction which would substantially increase costs over standard
construction costs.
5. We recommend that the City adopt the following policy regarding extension of
sewer service; where the City annexes an area that is currently unsewered by
another municipality, the City should provide sewer service; where annexation
occurs and sewer service is provided by another municipality, the City should
purchase the facilities from the adjacent municipality,based on that municipalities
actual depreciated cost for providing the facilities to obtain service, so long as
those facilities flow by gravity to the City system.
6. The rate increases recommended in this plan should be considered as the
minimum level of increases necessary to implement the City-funded portion of the
recommended improvements. Currently, new development pays a major portion
1-5
CHAPTER ONE `
•
of the remaining cost of recommended improvements. If funding from this
source, such as the special utility connecting fee, is not available, the City's share
of these construction costs will most likely increase.
7. The City's sewer system is complicated; the preceding conclusions and
recommendations are based on the highest priority issues, which, in our opinion,
must be confronted. However, we propose a substantial number of additional
recommended facility improvements and modifications. When we assigned them
priorities, we took into consideration the following characteristics:
a. Whether a facility is structurally deteriorating or has hydraulic
capacity problems.
b. Whether an improvement increases overall efficiency by reducing
operation and maintenance.costs..
c. Whether an improvement helps protect the environment or reduces
a threat to public health.
K. SYSTEM IMPROVEMENTS
The following is a summary of proposed improvements to the Renton sanitary sewer system,
which are presented in this Comprehensive Sewer System Plan, to correct existing facility
deficiencies and to accommodate growth.
1. Adopt this Comprehensive Sewer System Plan in order to establish consistent City
policies and to provide the capability of efficiently planning the sanitary sewer
facility improvements. This plan should be updated at intervals of no greater than
five years in order to accommodate unforeseen changes in existing assumptions
and conditions, and for adjusting budgets and sewer service rates.
2. Replace aging and substandard sanitary sewer facilities within the City. These
sewers present a significant potential danger to the environment and public health.
3. Continue development of the gravity sewer system in order to allow the
elimination of existing sewage lift stations. These lift stations are less reliable,
require higher maintenance and operation costs, and cause more adverse impacts
• to downstream facilities than do properly planned gravity sewer systems.
4. Rehabilitate or replace the sewage lift stations that are considered to be
permanent sewage facilities. These improvements will reduce maintenance costs
and increase system reliability.
-
1-6
Summary and Introduction
5. Examine programs and projects that will reduce wastewater flow rates and
infiltration and inflow within the sanitary sewer system. These may be cost-
effective methods that could possibly reduce thesize of sanitary sewer facilities,
thereby reducing capital expenditures.
6. Implement sanitary sewer rate increases in order to finance capital improvement
costs as well as operation and maintenance costs in accordancewith the utility
rates study.
L. IMPLEMENTATION
In 1990 the Washington State Legislature, in recognition of the need for growth management
legislation to preserve the environment and quality of life while providing for economic growth,
enacted the Growth Management Act (ESHB 2929). This act requires cities and counties in the
populated regions of the state to develop coordinated Comprehensive Plans to identity areas
where urban growth is appropriate, and to provide necessary transportation and utility
improvements. The adoption of the Comprehensive Sewer System Plan is the first step that the
Wastewater Utility is taking to implement the requirements of the Growth Management Act.
The majority of this document presents information that will be used as a foundation as the City
of Renton's Wastewater Utility plans for the future of the system. This information includes 'a
general overview of the existing sewer system and a definition of terms; a presentation of specific
policies that guide the management and operation of the sewer system; an examination of the
operation and maintenance programs for the utility; and a description and analysis of all
components in the existing system with recommended improvements. These items are specific
toward the effective and efficient operation of the utility.
The first phase of the Comprehensive Sewer System Plan is a snapshot in time under current land
use policies. It examines the current land use plan adopted in 1986, uses those designations to
develop the saturation flow.rates for the model, and establishes an operational plan to allow for
the development of those land uses. It is important that this step be accomplished as nay loans
or grants we receive will be based on this information.
As part of this process the Wastewater Utility's goal is to accomplish, pursuant to adoption of
this plan, the following implementation tasks:
A. Update the financial models developed in the rate management analysis (Water
and Wastewater Rates Management Analysis, RH2 Engineering P.S, November
1989) during 1992, in a manner consistent with the City's budget schedule, so that
rates can be adjusted to accurately reflect the current financial situation within the
utility.
B. Complete the inventory of the sewer system,.verifying the as-built records and
gathering data on those parts of the system that are not recorded.
1-7
•
CHAPTER ONE.
C. •Develop and implement a program to meter flows in order to gather data to
calibrate the sanitary sewer computer model. .
D. Use the sewer model to develop a timetable of availability for sewers in
unsewered portions of the City and the Urban Growth Areas adopted by the City.
E. Prepare an update to the 1991 Long-Range Wastewater Management Plan if
necessary, to incorporate the new adopted land use designations
F. Update the sewer model, if necessary, to reflect the new adopted land use
designations and concurrency standards.
M. HOW TO USE THIS PLAN
This plan is arranged in eight major sections:
Chapter I provides a summary of the recommendations and conclusions presented in this
Comprehensive Sewer System Plan.
Chapter II provides a general overview of the existing sewer system and a definition of
terms.
Chapter III presents specific policies that guide the operation of the sewer system.
Chapter IV. examines the land use policies that guide how the City of Renton
accommodates growth; and presents the land uses,joint use agreements and design criteria
that were used to develop wastewater saturation flow rates on which'the computer
hydraulic analysis was based.
Chapter V describes and analyzes.all components in the existing system and presents their
recommended improvements.
Chapter VI further describes the improvements necessary to resolve existing deficiencies
and accommodate growth. The proposed improvements are also listed by priority and by
project type.
Chapter VII examines the operation and maintenance programs for the Wastewater Utility.
Chapter VIII presents the costs of the proposed improvements and the anticipated user
increases which will be necessary to support them.
1-8
CHAPTER II
OVERVIEW OF EXISTING SEWER SYSTEM
CHAPTER II
• OVERVIEW OF EXISTING SEWER SYSTEM
This chapter presents an overview of the existing sewer system. A more extensive description
and analysis of the system, along with recommended improvements, can be found in Chapter 5.
A. OVERVIEW OF EXISTING SYSTEM
The City of Renton is approximately 16 square miles with a population of over 30,000.
Approximately 70 percent of the land area and 80 percent of the population is currently served
by sanitary sewers. The City of Renton's collection system is municipally owned, operated and
maintained and is managed by the City of Renton's Planning/Building/Public Works Department
(Public Works).
•
The City maintains 23 sewage lift stations; an additional six sewage lift stations are privately.
owned and maintained. Wastewater is discharged to METRO facilities at 55 locations within the
City, from which it'is conveyed to and treated by METRO's Renton Treatment Plant. The City
of Renton systemcontains approximately 3,000 manholes and 10,187 customer connections. •
FIGURES 1, 2 and 3 illustrate the existing sewer system in plan and profile views.
B. SYSTEM HISTORY
Sanitary sewer facilities were first constructed in the downtown area of the City of Renton in
1910. Prior to that it was common practice to dispose of wastewater on-site or to directly
discharge it to the local estuaries. By 1940 the City's population had grown to 4,800; wastewater
was collected and treated in a large septic system located on the Black River channel. During
the 1940s, federal housing was constructed in the City to accommodate workers employed by
defense industries. By 1956 the wastewater collection system'served a population of 14,800
people within the City's service area. By that time wastewater was treated in a secondary
treatment plant located near the current Renton High School Stadium. This treatment plant
discharged treated wastewater to the Cedar River.
In 1958 the Municipality of Metropolitan Seattle (METRO) was formed to solve the growing
problem of pollution in Puget Sound, Lake Washington and surrounding waters. METRO
developed a regional plan for wastewater collection and treatment facilities in 1959 and assumed
operating responsibilities for the regional interceptors and waste treatment systems in 1962,
including Renton's secondary treatment plant. The new secondary treatment plant was
constructed between 1956 and 1962 near the intersection of Grady Way and Monster Road and
discharged into the Duwamish Water Way. This location is the current site of METRO's Renton
Treatment Plant, which serves as one of the regional treatment facilities. The City of Renton
sanitary sewers now discharge to these METRO facilities. -
2-1
• I
CHAPTER TWO
C. SYSTEM COMPONENTS
The purpose of a sanitary sewer is to convey wastewater from its source to a point of treatment.
Since_the generation of wastewater can vary considerably, there is seldom any control over the
volume of wastewater that must be conveyed at any particular time. For this reason the sanitary
sewer system is designed to accommodate a wide range of wastewater flow rates.
The best method for conveying wastewater is a gravity sewer system. A gravity sewer system
is made up of collector sewers, which as their name implies, collect the wastewater from the
various sources. These collector sewers then convey the wastewater to interceptor sewers, which
convey it to the point of treatment.
The sanitary sewer system must be capable of transporting all of the constituents of the
wastewater stream, which include the suspended solids, floatable solids and liquid constituents.
In general, most of the floating materials are carried along with the. flow stream; however,
suspended-solids have a tendency to settle out of the waste stream, unless minimum carrying
velocities are achieved. This requires that the sanitary sewers be constructed with a minimum
slope to create a gravity flow which will result in a velocity that will continuously carry the
suspended solids portion of the waste stream.
Another major sewer system component, and typically the most vulnerable one, is the sewage
lift station. A lift station is needed when the sanitary sewer system must overcome topographic
restrictions that make it impossible or financially unfeasible to construct a gravity sewer.
However, some lift station are temporary, used only until the gravity sewer system can be built.
D. WASTEWATER COLLECTION BASINS
The City of Renton is divided into six major wastewater collection basins, as shown in FIGURE
1, which consist of one or more subbasins. These collection basins and subbasins predominantly
follow the natural drainage patterns of the Renton service area. The six major basins are 1) May
Creek, 2) Lower Cedar River, 3) Lake Washington East, 4) Black River, 5) Lake Washington
West, and 6) Duwamish Estuary.
E. INTERCEPTORS AND COLLECTION SYSTEMS
Interceptor are sewers that receive flow from collector sewers and convey such wastewater to a
point for'treatment or disposal. They are typically located in low lying or centralized areas in
order to facilitate the gravity flow of the wastewater. The interceptors and all other sewers make
up the collection system. Standards and guidelines for design and construction of sanitary sewers
are detailed in Chapter 4.
2-2
1 '
f '
Overview of Existing Sewer System
The City of Renton has approximately 153 miles of gravity sewer within its service area as
displayed in Plan View in FIGURE 1. Sewers shown in bold represent the major interceptors
in the system. Those shown in -gray represent the collection network. The sanitary sewer
collection system is primarily comprised of 8-inch diameter sanitary sewers. The hydraulic
profile, shown in FIGURE 2, illustrates how wastewater flows through the system.
1. EXISTING SEWERS
The existing sanitary sewer system is constructed with a variety of different sewer sizes and pipe
materials. TABLE II-1 summarizes the lengths of pipe for the different pipe diameters and
materials. As illustrated in this table, a majority of the sanitary sewer system is constructed with
8-inch diameter pipe. This is consistent with the Department of Ecology criteria material for
minimum sanitary sewer sizing. The majority of pipe material within the existing system is
comprised of concrete and PVC pipe. The concrete pipe has been typically used for the older
sewers and larger diameter sewers, while the PVC pipe has been typically used for newer sewer
• system installations up to 12-inches in diameter.
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•
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. 2-3
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•
CHAPTER TWO
TABLE II-1: SUMMARY OF SANITARY SEWER SIZES AND PIPE MATERIAL
_ I
PIPE SIZE SUMMARY
PIPE DIAMETER LENGTH PERCENTAGE
6-inch 2.8 miles 1.8%
8-inch 93.5 miles 61.1%
10-inch 5.3 miles 3.5%
12-inch 7.8 miles 5.1%
14-inch 0.2 miles 0.1%
15-inch 2.4 miles 1.6%
16-inch 0.1 miles 0.1%
18-inch 2.2 miles 1.4%
21-inch 0.8 miles 0.5%
24-inch 1.5 miles 1.0%
Unknown 36.4 miles 23.8%
•
TOTALS 153 miles 100%
PIPE MATERIAL SUMMARY
PIPE MATERIAL LENGTH PERCENTAGE
Concrete Pipe 64 miles 41.8%
PVC Pipe • 33 miles 21.6%
Vitrified Clay Pipe 8 miles 5.2%
Lined ductile iron pipe 5 miles 3.3%
Unknown pipe type • 43 miles 28.1%
TOTALS 153 miles 100%
The City sanitary sewer system also contains approximately 3,000 manholes, which join the
various links of sanitary sewer pipe. These manholes vary in construction type from old brick
manholes to the newer precast concrete manholes. Many of the older manholes do not meet
current code for safety such as manhole covers which are less than 24-inches in diameter.
2-4
Overview of Existing Sewer System
2. INTERCEPTORS
A list of the sanitary sewer interceptors within the Renton system is presented below. These
interceptors are located in the following wastewater collection basins:
MAY CREEK BASIN
• Honey Creek Interceptor
• Proposed May Valley Interceptor
LOWER CEDAR RIVER BASIN
I .
• Tiffany Park Interceptor
• South Highlands Interceptor
• Maplewood Interceptor
• - Heather Downs Interceptor
• Proposed Parker PUD Interceptor
• Proposed East Renton Interceptor
LAKE WASHINGTON EAST BASIN
• Lakefront Force Main
• West Kennydale Interceptor
• North Highlands Interceptor
• Proposed East Kennydale
• Proposed Park Avenue
BLACK RIVER BASIN
• SW 16th Street Interceptor
• Talbot Hill Interceptor
• Springbrook Interceptor
LAKE WASHINGTON WEST BASIN
West Renton Interceptor
• Tobin Street Interceptor •
2-5
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CHAPTER TWO
•
3. METRO CONNECTIONS '
The Renton sanitary sewer system discharges wastewater to METRO sewer interceptors at 55
locations. The wastewater flow rates into each of these connections varies considerably,
depending on the area served by the collection system. The major METRO connections for each
subbasin are listed in TABLE II-2.
TABLE 11-2: MAJOR METRO CONNECTIONS
SUBBASIN MANHOLE NO.
May Creek MH 3-4
Kennydale Lakefront MH 2-28
Kennydale MH 7-41
North Renton MH 12-202
West Renton - MIT 16-49
Renton Industrial(North) MH 20-57
Renton Industrial (South) MH 30-19
Panther Creek MH 26-56
Talbot Hill MH 21-26
South Renton MH 16-115
Tiffany Park MH 23-1
South Renton MH 12-205
Maplewood/Heather Downs MH 18-1
F. LIFT STATIONS
Sewage lift stations are used to convey wastewater from a low point to a higher point through
the use of a sewage pump and a pressurized force main. The City of Renton has 23 sewage lift
stations within its sanitary sewer system. The location of these lift stations is shown in FIGURE
3. The most common type is a wet well mounted lift station in which the mechanical and
electrical equipment are located above the ground surface and over a large manhole out of which
the wastewater is pumped. The second most common type is a wet well/dry well configuration
in which mechanical and electrical equipment are located underground in a sealed enclosure
adjacent to a large manhole from which the wastewater is pumped. Two other types of lift
stations include a submersible pump installation in which the sewage pumps are placed directly
in the wet well, and a pneumatic injector in which wastewater is conveyed through a force main
using pressurized air. The City has one each of these types of lift stations.
2-6
Overview of Existing Sewer System
•
Sewage lift stations are the most vulnerable element of a sewage collection system. Temporary
lift stations are constructed when it is too costly, at that time ,to complete the gravity sewer
system; permanent lift stations are constructed when it is either physically impossible or
financially impractical to construct gravity sewers.
G. TELEMETRY AND CONTROL SYSTEM
Successful operation of any municipal sewer system requires that the municipality maintain a
comprehensive maintenanceprogram and that they obtain accurate sewage flow rate information.
Although many additional operation and construction elements are necessary for a complete and
working system, maintenance and flow rate information are the keys to a successful operation.
A telemetry and control system is the means by which flow rates are measured and maintenance
needs are updated.
The City currently owns and operates an analog, signal-based alarm reporting system,
manufactured by Stead Baggerly of Bellevue,Washington, which monitors each lift station. The
system includes a master console, which is located in the City Shops, and a remote telemetry
transmitter located in each lift station.
H. OPERATION AND MAINTENANCE
The current operation and maintenance program for the sewer utility consists of four elements:
normal operations,emergency operations,preventive maintenance and staffmg. Normal operation
of the sewer system is shared by the Engineering Division and the Operation and Maintenance
Division. The program is described and evaluated in more detail in Chapter 6.
I. DEFINITION OF TERMS
•
Building Drain - In plumbing, that part of the lowest horizontal piping within a
building that transports wastewater, or stormwater to a building
sewer.
Building Sewer - In plumbing, the extension from the building drain to the public
sewer or other place of disposal. Also called house connection or
private side sewer.
Collector Sewer - A sewer that discharges into a main or trunk sewer and has no
other common sewer tributary to it, only building sewers.
Combined Sewer - A sewer intended to receive both wastewater and storm or surface
water.
2-7
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CHAPTER TWO
Infiltration - Infiltration is the entrance of groundwater into the sanitary sewer
system through cracks, pores, breaks, and defective joints in the
sewer piping network. _
Inflow - Inflow refers to direct flow of .stormwater into sanitary sewer
systems through hookups from stormwater collection facilities and
illegal connections.
Intercepting Sewer - A sewer that receives flow from a number of trunk sewers and
conducts such wastewater to a point for treatment_or disposal.
Lift Station - A sewage pumping facility which consists of a wet well for
collecting wastewater;mechanical equipment such as pumps,valves
and piping; electrical and control equipment; and a force main.
Main or Trunk Sewer - The principal sewer to which collector sewers are tributary; also
called trunk sewer. A sewer that receives many collector branches
and serves a subbasin.
•
Outfall - The point, location, or structure where wastewater or drainage
discharges from a sewer, drain, or other conduit.
Public Works - The City of Renton's Planning/Building/Public Works Department.
'-
Relief Sewer - 1) A sewer built to carry flows in excess of the capacity of an
existing sewer. 2) A sewer intended to carry a portion of the flow
from a basin in which the existing sewers are of insufficient
capacity, and thus prevent overtaxing the latter.
Sanitary Sewer - A sewer that carries liquid and waterborne wastes from residences,
commercial buildings, industrial plants, and institutions, together
with minor quantities of ground, storm, and surface waters that are
not admitted intentionally.
Separated Sewer - A sewer intended to receive only wastewater or stormwater or
surface water.
Side Sewer - See building sewer.
Side Sewer Stub - The portion of the public sewer between the collector sewer and
the individual property line.
2-8 •
Overview of Existing Sewer System
Storm Sewer - A sewer that caries stormwater and surface water, street wash and
other wash waters, or drainage, but excludes domestic wastewater
and industrial wastes. Also called storm drain.
Wastewater - The spent or used water of a community or industry which contains
dissolved and suspended contaminants which cannot be discharged
directly to a lake, stream or river.
Capacity Problems - When flow rates exceed what the facility is designed to convey.
Gravity Sewer Capacity - The maximum capacity for a gravity sewer is the volume of flow
that can be carried in a sewer at a depth to diameter ratio of 0.70
' which is then used in the Manning's equation.
Hydraulic Analysis - A computer simulation of a sewer system to determine if it can
adequately convey saturation, wastewater flow rates.
Lift Station Capacity - The maximum capacity for a lift station is equal to the peak, wet
weather flow which the largest pump within the lift station has
been designed to convey.
Structural Analysis - A visual inspection, conducted by the human eye of by a video
camera, to determine if any physical weaknesses or problems exist.
Saturation Condition - The point at which development is complete within a land use
designation. No further development is possible without a change
in the land use limitations.
•
2-9
CHAPTER TWO
FIGURE 1:
2-10
NORTH SOUTH FIGURE 2
CITY OF RENTON
SDo'
HYDRAULIC PROFILE RENTON SEWER SYSTEM COMP ESANITARYHENSIVE SEWER S W R PLAN
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COMPREHENSIVE SEWER PLAN
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CHAPTER III
OPERATIONAL POLICIES
CHAPTER III
OPERATIONAL POLICIES
•
A. INTRODUCTION
In addition to using flow rates and design criteria to analyze the existing system, each part of the
system was evaluated against the specific policies that guide it. The policies, design criteria arid
standards used for planning and operating the sanitary sewer system are based on laws and
policies that originate from the following seven sources, listed in descendingorder, from those
with the broadest authority to the most narrow:
• Federal Regulations - Environmental Protection Agency
• State Regulations - Department of Ecology
• METRO Policies - Municipality of Metropolitan Seattle
• City of Renton Ordinances - City Council
• Administrative Policies - Mayor
• Department Policies - Public Works Department •
• Utility Policies - Wastewater Utility Staff
•
The laws and policies guide the wastewater utility's operations on a day to day basis, as well as
its planning for growth and improvements. Their combined objective is to provide adequate,
reliable sanitary sewer service at a minimum cost to the customer.
The highest levels of policies--Federal Regulations,State Regulations,METRO policies, and City
of Renton Ordinances--dictate requirements that are set by law. Other lower level policies cannot
be less stringent or in conflict with those laws. The last three entities--Office of the Mayor,
Public Works Department policies and Wastewater Utility Section--dictate requirements that
supplement those laws. Those requirements are the specific policies summarized in this chapter.
B. POLICIES
The sewer system's ability to achieve the above laws, policies and standards is detailed in
Chapter 5, System Analysis and Results. Chapter 5, System Analysis and Results and Chapter
6, Conclusions and Improvements, identifies where the system fails to meet those requirements
and presents recommended improvements. It is important to note that if standards are set too
low, customers will not be satisfied, and if standards are set too high, the cost of installing and
operating facilities to meet such standards will be financially unacceptable.
3-1
•
CHAPTER THREE
All policies and standards have the combined purpose of providing an acceptable level of service
to the sanitary sewer customers. Service, therefore, is the most important principle that guides
• construction, operation, maintenance and administration of the system. The following are
components of the City's service principle:
1. Customer Service
2. Finance
3. Facilities
4. Organization
The policies associated with each service category are identified in this chapter. TABLE III-1
illustrates the relationship between each of these categories.
1. CUSTOMER SERVICE POLICIES
This section summarizes the customer service policies used toprovide a connection to the
sanitary sewer system.
Annexations (Source: City Policy, State Law)
• City annexation policies will not conflict with state regulations and guidelines.
Renton will follow state guidelines in the assumption of facilities in annexation
areas.
•
Areas annexed without existing municipal sanitary sewer service will be served
by Renton.
• Areas annexed with existing sanitary sewer service must meet.Renton Sanitary
Sewer Standards.
• Service to areas outside of the City limits without annexation will be evaluated by
the City Council on a case by case basis. The Public Works Department mandates
design standards and criteria for the areas requesting service without annexation.
•
• City Council will consider and may allow sanitary sewer service outside City
limits under the following conditions:
• A no protest agreement for annexation is signed by those obtaining service.
3-2
TABLE 3-1: CITY OF RENTON SANITARY SEWER, UTILITY POLICY OUTLINE
CITY POLICY OUTLINE
CUSTOMER SERVICE FINANCIAL FACILITIES ORGANIZATIONAL
CO
ANNEXATIONS COST OF SERVICE DESIGN CRITERIA STRUCTURE
SERVICE INSIDE CITY RATES FOR OUTSIDE CITY MAINTENANCE LEVEL OF STAFFING
TEMPORARY SERVICE LID'S/LATECOMER'S RELIABILITY RESPONSIBILITIES
EMERGENCY SERVICE METRO CHARGES VULNERABILITY RELATIONSHIP WITH
PLANNING BOUNDARIES JOINT USE OTHER DEPARTMENTS
•
,n0
ro
A
O
O
CHAPTER THREE
• Service is necessary to protect the City's drinking water supplies, or
service is necessary to convert from a failing septic tank and drainfield, or
the property served is within a drainage basin where service can be
provided with gravity flow.
• The full cost of service is paid by those served.
• Boundary Review Board approval of service area boundaries is obtained.
• City Council will consider annexations without assumption of existing
sanitary sewer facilities under the following conditions:
• The sanitary sewer facilities are operated and maintained by an adjacent
municipal utility.
• The adjacent utility has executed a service boundary agreement with the
City.
• The annexation area is located in a drainage basin that is better served by
the adjacent utility.
Mandatory Side-sewer Connections (Source: City Policy)
• The City encourages all residents within the City to connect to public sewers.
• Properties that are within two hundred feet of an existing sewer line who do not
connect to them will be asked to pay a charge equal to the City's sewer charge.
• Any party who has a connection available, but claims an exemption from
using it, is required to provide proof to the City that its septic system
works and that it periodically pumps and conducts follow-up tests on it.
• Since failing septic systems pose a grave, health hazard to the City's groundwater,
properties with such systems are required to connect to the public sewers.
▪ The charge for failing to connect should be evaluated.
• The City should research whether the low-income, infirm exemption
applies to the hook-up charge and whether the City can financially assist
people in that category.
• The City should reevaluate its policy on refusing to provide sewers outside
of its limits when a threat to the City's aquifers exist.
3-4
Operational Policies
Temporary Services (Source: City Policy)
• Compliance with standards may be deferred for temporary sanitary sewer service.
Emergency Service (Source: City Policy)
• Compliance with standards may be deferred for emergency sanitary sewer service. •
• Policy criteria may be waived for emergency service.
Planning Boundaries (Source: City Policy)
• For planning purposes, the City will use sanitary sewer service boundaries
established by agreement with adjacent municipalities.
• Renton follows state law in assuming portions of adjacent sanitary sewer systems
as a result of annexation.
• Facilities will be planned and sized to serve natural basins to minimize the need
for pumping.
• Projected development and sewage flows will be based on adopted land use plans
and policies.
2. FINANCIAL POLICIES •
This section details the financial policies to be used to operate the sanitary sewer system.
Cost of Service (Source: City Policy)
• The utilities will use a rate setting process that complies with standards established
by the American Public Works Association.
• • Cost-based rates and additional charges established for the sanitary sewer utility
are those that 1) recover current, historical, or future costs associated with
Renton's sanitary sewer system and services, 2) are equitable charges to recover
costs from utility customers commensurate with the benefits they receive, and 3)
provide adequate and stable sources of funds to cover the current and projected
annual cash needs of the sanitary sewer utility.
• The existing customers of the sanitary sewer utility will pay the costs of operating
3-5
CHAPTER THREE
and maintaining the facilities through user rates. In addition, user rates include
a portion of the debt service incurred to finance the capital improvements and
replacements of the'utility.
• New customers seeking to connect to the sanitary sewer system will be required
to pay charges for an equitable share of the cost of the system. Revenue from
these charges is used to finance part of the Capital Improvement Program.
• Customers will be charged for supplemental, special purpose services through
separate ancillary charges based on the cost to provide the service. Ancillary
charges increase equitability and increase operating efficiency for services to
customers. Revenue from ancillary charges will be used to offset operations and
maintenance costs.
• The utility will maintain information systems which provide sufficient financial
and statistical information to ensure conformance with rate-setting policies and
objectives.
• There are two widely used, generally accepted methods for determining the total
revenue requirements of a sanitary sewer utility - the cash basis and the utility
basis. The sanitary sewer rates have been developed using the cash basis, a
method commonly used by publicly owned utilities.
• User charges must be sufficient to provide cash for the expenses of operating and
maintaining the utility. To ensure the fiscal and physical integrity of the utility,
an amount should be set aside each year for capital expenditures from retained -
earnings. That is, an amount should be set aside to cover some portion of the
depreciation of the physical plant. The amount may be transferred from the
Sanitary Sewer Fund to the Construction Fund for general purposes or for specific
purposes such as to create a reserve for main replacement.
• A Working Capital Reserve will be maintained to cover emergencies, bad debts,
and fluctuations in cash flow.
• Customers should be classified as single-family, multi-family, commercial,
industrial, governmental, and senior citizens. These are the existing customer
classes for the utility.
• The inflation rate will be based on information provided by the Finance
Department.
3-6
Operational.Policies
• The large industrial users will be charged for services on the same basis as all
other users.
• The utility will use generally accepted cost allocation principles for all cost
allocation purposes.
• The utilities' fees and charges should be calculated for the service area as a whole.
Rates will be the same regardless of service location (except for the inside
City/outside City distinction discussed later).
Rates For Outside City (Source: City Policy)
• For customers residing outside the City limits, sanitary sewer rates are 1.5 times
the residential City rates.
LID's/Latecomer's (Source: City Policy, State Law) •
• Owners of properties that have not been assessed or charged an equitable share
of the cost of the sanitary sewer system shall pay, prior to connection to the
system, one or more of four charges: latecomer's fees, special assessment charge,
utility connection charge, or inspection/approval fees.
METRO Charges (Source: City Policy)
• Charges and fees levied by the Municipality of Metropolitan Seattle (METRO)
shall be passed on to customers.
3. FACILITY POLICIES.
This section details the planning criteria to be used to establish an optimum behavior level
and a standard of quality for the sanitary sewer system.
Design Criteria (Source: City Policy)
• All sanitary sewer facilities shall be designed to meet the minimum requirements
and standards set forth in the "Criteria For Sewage Works Design" prepared by
the Washington State Department of Ecology and Title 8, Chapter 5 of the City
code.
• Analysis and design criteria are detailed under Section C of this chapter.
3-7
CHAPTER THREE
Maintenance (Source: City Policy)
• The City shall maintain the sanitary sewer system in a safe,reliable, and efficient
operating condition with repairs and replacements provided on a scheduled basis
that acknowledges a functional and economically useful life of the equipment and
facilities.
• Equipment breakdown repairs should be made even if overtime labor is
involved.
• Equipment should be replaced before it becomes obsolete.
• Worn parts should be repaired, replaced, or rebuilt before they represent
a high probability of failure.
- • Equipment that is out of service should be returned to service as soon as.
possible.
• A preventive maintenance schedule shall be established for all facilities,equipment
and processes.
• Spare parts shall be stocked for all equipment items whose failure will impact 1)
the ability to meet other policy standards, or 2) the inability to continue providing
service to customers.
• Tools shall be obtained and maintained, to repair all items whose failure will
impact the ability to meet other policy standards.
• Dry, heated shop space shall be available to all maintenance personnel.
• All maintenance personnel shall be trained in the procedures and techniques
necessary to efficiently perform their job descriptions.
• Maintenance shall be performed by the sanitary sewer maintenance staff, and
supervised by the Field Superintendent.
• Written records and reports will be maintained on each facility and item of
equipment showing operation and maintenance history.
• The City owns and shall maintain side sewer stubs. If a side sewer becomes
plugged, the property owner shall first hire an independent plumber to investigate
3-8
Operational Policies
the problem. If it is determined that the problem exists within the City-owned
section of the side sewer, then the maintenance crews shall promptly respond and
correct the problem.
• If an existing gravity sanitary sewer must be extended in order to make a side
sewer connection, the property owner must extend the gravity sewer along the full
extent of the property.
• Restaurant and other food processing establishments shall install and maintain
grease traps.
Vulnerability ( Source: City Policy)
•
• Vulnerability analysis will be performed to determine a reasonable "worst case"
failure for each basin. The analysis will consider the failure of theinterceptor and
trunk sewers, failure of the largest mechanical component, and power failure to
a single power grid.
Joint Use (Source: City Policy)
• All joint use facilities must comply with Renton policy and design standards.
• Joint use facilities located within the City will be maintained by the City of
Renton.
• Joint use facilities will be pursued only in those areas that improve reliability or
reduce operating costs.
4. ORGANIZATIONAL POLICIES
Structure (Source: City Policy)
• The Wastewater Utility shall be operated as an enterprise utility (financially self
supporting).
• The Wastewater Utility shall consist of two divisions: planning/design and
operations/maintenance.
• Wastewater Utility management is accomplished by the Public Works Department
managers.
3-9
CHAPTER THREE
• The Wastewater Utility shall operate only the municipal sanitary sewer system.
Stormwater, water, and other utilities are not administered or operated by the
Wastewater Utility.
• Wastewater Utility customer service is performed by the Public Works Customer
Service Division (general) and by the Wastewater Utility staff (technical).
Staffing (Source: City Policy, State Requirements)
• The utility staff level is established by the City Council based on the utility
requirements and financial resources of the City.
• Personnel certification will comply with State standards. The Utility Engineer and
Maintenance Supervisor shall be certified.
• The City will support staff training.
Responsibilities (Source: City Policy)
• The Wastewater Utility has the responsibility for sanitary sewer system operation.
• Planning,design, operations and maintenance,records management, and customer
service and construction will be accomplished by the Wastewater Utility.
Relationship with other Departments (Source: City Policy) •
• The Finance Department is responsible for customer billing, payment collection,
project cost reporting and fund activity reporting.
• The Personnel Department is responsible for employee records, union labor
negotiations, and salary schedules.
• The Police Department is responsible for enforcing violations of City sanitary
sewer ordinances.
•
3-10
CHAPTER IV
LAND USE POLICIES, ADJACENT SYSTEMS & DESIGN CRITERIA
CHAPTER IV
LAND USE POLICIES, ADJACENT SYSTEMS & DESIGN CRITERIA
A. INTRODUCTION
This chapter describes the City of Renton's land use policies, the sewer system's connections
with adjacent utility systems, and the sewer system's design criteria. It then describes how land
use policies and design criteria were used to develop saturation flow rates for a hydraulic
computer analysis of the existing system.
The City of Renton's land use policies and its sewer system are interconnected with adjacent
sewer systems in several ways. Existing land use provides the basis for designing properly sized
sewerage facilities,including trunks,interceptors, and lift stations. In most cases Renton's sewers
are downstream, or at the receiving end of the effluent, from the systems adjacent to the City.
Most of the basins served in part by the City are also served in part by other cities or districts.
Therefore,proper planning for Renton's sewers requires that the plans of these adjacent agencies
be evaluated.
B. STUDY AREA
As described in Chapter 2 the City of Renton serves six drainage basins. These are: 1) May
Creek, 2) Lower Cedar River, 3) Lake Washington East, 4) Black River, 5) Lake Washington
West, and 6) Duwamish Estuary. Except for Lake Washington East, all of these basins are also
served in part by another sewer agency. The extent of these basins is shown on FIGURE 1.
May Creek Basin is partially served by King County Water and Sewer District No. 107. Service
within the lower Cedar River Basin is also provided by Cedar River Water and Sewer District
and Soos Creek Water and Sewer District. In addition to Renton, the City of Tukwila, City of
Kent, and Soos Creek Water and Sewer District also provide service within the Black River
Basin. Both Renton and the City of Tukwila provide service within the Duwamish Estuary.
Parts of the Lake Washington West Basin are served by Bryn Mawr/Lakeridge Water and Sewer
District and Skyway Water and Sewer District.
The study area,shown in FIGURE 5, for this Comprehensive Sewer Plan Update was developed
using a variety of criteria. Because many of the adjacent utilities have sanitary sewer facilities
that border the Renton city limits, the study area for the most part, corresponds with the current
city limits. Deviations from this norm did occur in the following areas:
• Since Water District 90 does not currently provide sanitary sewer service within
its service area, a considerable amount of annexation pressure exists in this area.
Therefore, the study area was extended into the service area of Water District 90
out to the East Maplewood subbasin limits.
4-1
CHAPTER FOUR
• The City of Renton is currently negotiating with Soos Creek Water and Sewer
District to revise the service area boundary along their common border. For this
reason, the study area included the tentatively agreed upon service area boundary.
• Natural boundaries in certain areas make the City of Renton the logical sanitary
sewer provider to them. The study area includes the following areas of this kind:
• the area lying south of May Creek within King County Water
District 107,
• the area to the east of the Green River within the City of Tukwila,
• and
• the area within the southern portion of the Skyway Water and
Sewer District and an area within the eastern portion of the Bryn
Mawr/Lakeridge Water and Sewer District.
C. LAND USE
1. CITY OF RENTON
Development in the service area must be in compliance with the City's Comprehensive Land Use
Plan and policies, which represent a long-range plan for growth and physical development of the
City. The current character of the City reflects the original Comprehensive Land Use Plan which
was adopted in -1965 and revised in 1968. Under this plan, industrial and commercial
development was directed toward the Central and Green River Valley areas to allow for further
expansion of the City's business center. Residential growth under the plan was primarily directed
toward the eastern areas such as the Highlands and Talbot Hill areas of the City, since the West
Hill was already developed primarily with residences. A summary of the land use that resulted
from this plan is presented in FIGURE 6.
Review and updating of the Comprehensive Land Use Plan was initiated in 1975 to affect
changes made in the economic, legislative, and land use philosophy of the City since the adoption
of the original plan. To accomplish this updating, the original plan was divided into four
planning areas: the Northeast Planning Area, the Southeast Planning Area, the Central Planning
Area, and the Green River Valley Planning Area. Existing and proposed land use for each area
was examined,revisions were proposed and hearings were held, with final revisions incorporated
into the Revised Comprehensive Land Use Plan. Since 1975 all four Planning Areas have been
examined, and Land Use Plans have been revised and adopted for each planning area. Since
1989 the City has been in the process of revising and updating the overall Comprehensive Plan,
a process that will not be completed in time for inclusion in this document.
4-2
Land Use Policies/Adjacent Systems/Design Criteria
Planned land use within the service area is based on the following City policy. Section 3.A of •
the Comprehensive Land Use Plan recommends maximizing the use of available utility and
service resources in existing areas prior to allowing development of outlying areas. This policy
section provides the framework for current land use development and is stated in TABLE IV-1.
TABLE IV-1: SECTION 3.A OF THE COMPREHENSIVE LAND USE PLAN
3.A. LAND DEVELOPMENT OBJECTIVE: Growth and development should
occur in a timely and logical progression of the existing urban area to maximize
the use of existing services.
POLICIES:
1. To minimize the necessity for redevelopment, premature development should
only be allowed where it can be shown to be compatible with future use in the
vicinity.
•
2. Development beyond the urban fringe should only be allowed
where it is a consistent extension of urban services.
3. Vacant land surrounded by developed land should be given
•
priority for development.
•
4. Land where adequate public utilities are available should be
given priority for development.
5. A balance of residential, commercial, and industrial areas
should be encouraged.
6. The upgrading and/or redevelopment of marginal areas should
be encouraged.
7. The City should identify its sphere of influence.
8. Annexations should have logical boundaries.
9. To reduce processing time and effort and provide for efficient
use of existing public facilities, large annexations should be
encouraged.
10. Annexations that are economically advantageous should be
encouraged.
11. Development requirements should be definite and reasonable.
4-3
CHAPTER FOUR
The following objectives of the Comprehensive Land Use Plan are based on the policy statements
in TABLE IV-1.
- • To manage growth and physical development in the City and surrounding
unincorporated areas.
• To encourage growth in existing areas where the patterns of development are
already largely set.
• To direct expansion of residential, commercial, and industrial developments into
areas where land, utilities, access, and community facilities are available with the
capacity to accommodate the projected growth.
• Allow higher dwelling densities in areas capable of supporting a higher level of
development and lowering densities in areas where facilities are limited.
The existing land uses within the City have been classified into a variety of categories for the •
purposes of planning and mapping. The categories used are listed in TABLE IV-2 and the
corresponding number of acres in each land use category is listed in TABLE IV-3. A summary
of the information in TABLE IV-4 is shown in graph form in FIGURE 4.
TABLE IV-2: COMPREHENSIVE LAND USE CATEGORIES
Land Use Category Domestic Wastewater Equivalent Dwelling Units(EDU's)
Single-Family Residential 1,152 GPAD 6 EDU's/Acre
Low-Density Multi-Family Residential 2,112 GPAD 12 EDU's/Acre
Medium-Density Multi-Family Residential 3,168 GPAD 18 EDU's/Acre
High-Density Multi-Family Residential 4,224 GPAD 24 EDU's/Acre
Public/Quasi Public 600 GPAD 3 EDU's/Acre
Extractive Industrial 2,800 GPAD 14.5 EDU's/Acre
Light Industrial • 2,800 GPAD 14.5 EDU's/Acre
Heavy Industrial 2,800 GPAD 14.5 EDU's/Acre
Parks and Recreation 300 GPAD 1.5 EDU's/Acre
Right-of-Way 0 GPAD 0 EDU's/Acre
Greenbelt 0 GPAD 0 EDU's/Acre •
4-4
Land Use Policies/Adjacent Systems/Design Criteria
TABLE IV-3: EXISTING LAND USE FOR THE CITY OF RENTON(1989)
- • AREA DOMESTIC INFILTRATION" TOTAL
LAND USE [ACRE] FLOWS[GPM] &INFLOW[GPM] FLOWS[GPM]
RESIDENTIAL
Single Family 2069 1669 1868 3537
Multiple Family 326 723 294 1017
Mobile Home Park 103 83 93 176
COMMERCIAL
Neighborhood Commercial 3 6 3 9
General Commercial 238 463 215 678
Community Commercial 256 498 231 729
Recreational Commercial 190 369 172 541
INDUSTRIAL
Office Park 166 323 150` 473
Light Industry 180 350 163 513
Heavy Industry 551 1071 497 1568
Manufacturing 616 1198 556 1754
PUBLIC -
Community Utility 153 0 138 138
Schools 223 93 201 294
Hospitals 34 14 31 45
Parks 481 200 434 634
Civic/Community Centers 207 86 187 273
- OPEN SPACE
Open Space 51 0 - 46 46
Freeways/Arterials/Streets 2039 0 1841 1841
VACANT LAND 2294 2636 2071 4707
TOTALS 10,180 Acres 9,782 GPM 9,191 GPM 18,973 GPM
TABLE IV-4: VACANT LAND BY ZONING DESIGNATION FOR THE CITY OF RENTON(1989)
I
AREA DOMESTIC INFILTRATION TOTAL
LAND USE [ACRE] FLOWS[GPM] &INFLOW[GPM] FLOWS[GPM]
SINGLE FAMILY
G-1 Single Family 946 763 854 1617
R-1 Single Family 452 365 408 773
MULTI-FAMILY
R-2 Duplex 18 27 17 44
R-3 Multiple Family 28 62 25 87
R-4 Multiple Family 59 175 53 228
COMMERCIAL
i B-1 Business Use 64 • 124 58 182
INDUSTRIAL
M-P Manufacturing 335 651 302 953
L-1 Light Industrial 8 16 8 24
' 0-P Office Park 192 373 173 546
1 PUBLIC
P-1 Public Use 192 80 173 253
TOTALS 2294 Acres 2636 GPM 2071 GPM 4707 GPM
4-5
CHAPTER FOUR
TOTAL WASTEWATER FLOW
AND LAND USE ACREAGE
FIGURE 4
5011 `•••
4730 4707
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i::.:8::.; +•209 `'
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Acreage
Residential Commercial Industrial Public Open Space Vacant and
L
. LAND USE CATEGORIES
•
4-6
Land Use Policies/Adjacent Systems/Design Criteria
The existing land use pattern of the City of Renton reflects 100 years of settlement and
'expansion. The original City was settled in the broad floodplain at the confluence of the Cedar
and Black Rivers along the shore of Lake Washington. This area continues to be the heart.of
Renton; its industrial uses, the airport along Lake Washington and the Central Business District
at the foot of Renton Hills are interspersed with older, single-family housing and small apartment
complexes.
On the hills and plateaus surrounding the core area, are residential areas, originally developed
in the county and annexed to the City. Single-family residential neighborhoods are concentrated
in the Highlands, Kennydale Hill, West Hill, Earlington Hill, Talbot Hill, and the ridges along
Maple Valley.
Along the edges of the single-family neighborhoods and the transportation corridors are
concentrations of multi-family housing. Significant concentrations exist along NE 4th Street,NE
Sunset Boulevard, SW Sunset Boulevard, and Benson Road So.
In addition to the Central Business District, commercial areas are concentrated along the major
arterials and freeway exchanges, including Rainier Avenue, Grady Way, Sunset Highway,
Bronson Avenue, NE 4th Street, the NE 44th Street exit, and SW 43rd Street.
The Green River Valley was annexed to Renton in the late 1950s with the intention of developing
a second industrial base. This area, which was originally the northern end of a long farming belt
along the Green River, now includes a few residual houses and a significant concentration of
manufacturing, warehousing, and office park development. A hub of commercial services is
located in the southeast corner of the City limits.
Valley Medical Center dominates the land uses along the southern portion of Talbot Hill.
Surrounding the hospital is a concentration of support facilities, including medical and dental
offices and laboratories.
Parks in the Renton area tend to be located along river channels and lake shores. Many parks
are located along the Cedar River, including: Liberty Park, Maplewood Golf Course, Cedar
River Park, Jones Park, and the Cedar River Trail. Gene Coulon Memorial Beach Park and
Kennydale Beach Park are situated directly on the shore of Lake Washington.
The City is currently bounded in the south and west by. Kent and Tukwila, and to the north by
Lake Washington. Future land use is primarily a function of the location of existing vacant land
within the City and the rezoning of existing designations. The zoning designations for the vacant
land within the City are listed in TABLE IV-4.
4-7
CHAPTER FOUR
2. UNINCORPORATED KING COUNTY
Land use within the unincorporated portions of the study area is controlled by the 1985 King
County Comprehensive Plan. All of the study area in unincorporated King County is designated
"urban." Urban areas are those areas where most new housing and jobs will be located and
where most public spending for facilities, services, and open space is normally focused.
Comprehensive Plan Policies R-201 and R-202 establish a goal of achieving an average density
of seven to eight dwelling units per acre within the urban area. Such an overall density goal
cannot be achieved without providing sanitary sewer service to residential development.
King County is divided into smaller planning areas called Community Planning Areas. Two
community plans, Newcastle and Soos Creek, cover most of the unincorporated areas within the
study area of this Plan. The Soos Creek Community Plan was adopted in November 1979 and
is currently in the process of being updated. According to County staff, it is expected that a
revised Soos Creek Community Plan will be forwarded to the King County Council for review
and adoption in 1991. The Newcastle Community Plan was adopted in 1983. The update
process for the Newcastle Community Plan has not been scheduled.
3. SPHERE OF INFLUENCE
The City of Renton has entered into an interlocal agreement with the Cities of Bellevue and
Issaquah to establish sphere of influence lines. This agreement was signed by the three
jurisdictions in 1979. The sphere of influence agreement places responsibility for long-range
planning with the City of Renton within its sphere of influence
4. ADJACENT UTILITY SYSTEMS/JOINT USE AND SERVICE AGREEMENTS
The City has entered into several joint use and service agreements with neighboring districts and
private customers when it has been economically beneficial. A list and a summary of these joint
use and service agreements is presented below. The full text for each of these agreements is
presented in Appendix B.
• The Tiffany Park Interceptor Joint Use Agreement with the Soos Creek Water and Sewer
District.
• Apollo School Lift Station Service Agreement with King County Water District 90.
• Earlington Elementary School Service Agreement.
• King County Water District No. 107 Utility Franchise Agreement.
• King County Water District No. 107 Joint Use Agreement.
• King County Sewer and Drainage District No. 4 Agreement.
• City of Kent Agreement.
• Cascade Sewer District Service Boundary Agreement.
• Bellevue/Issaquah/Renton Sphere of Influence Agreement
4-8
Land Use Policies/Adjacent Systems/Design Criteria
The City is surrounded by eight adjoining utility entities, seven of which provide sanitary sewer
services. These eight utility entities are shown on FIGURE 7. It is evident that some sewer
franchise boundaries overlap with the City limits. These areas are also shown in FIGURE 7.
The study area for the City's Comprehensive Sewer Plan is shown on FIGURE 5. It includes
parts of drainage basins within adjoining utility entities. Areas which may be considered for
service boundary adjustments are also shown in FIGURE 5.
a. KING COUNTY WATER DISTRICT NO. 107
King County Water District No. 107 provides sewer service in part of the May Creek
Basin. The District adopted a Comprehensive Sewer Plan in 1988. Their plan for serving
May Creek Basin includes diverting approximately 1,000 acres from the May Creek Basin
to the Coal Creek Basin on an interim basis. This plan is based upon two assumptions:
first, that it would be too difficult and expensive to construct a May Valley Interceptor
at this time, and second, that the City of Renton's service in the southern part of the
Basin is adequately provided by the Honey Creek Interceptor. In order to accomplish this
diversion, the District is proposing to construct three lift stations and to complete a Coal
Creek Interceptor Improvement Project.
The sewer franchise boundary for King County Water District No. 107 is shown on
FIGURE 7. Two small service area overlaps occur because the City annexed part of the
District, but the District has not yet redrawn its boundaries.
The District and the City have entered into joint use agreements in the past in order to
provide for the construction of sanitary sewer facilities. Joint use agreements will •
continue to be needed as the May Creek Basin develops. The existing service area gap
which is located south of May Creek and east of Honey Creek may best be served by the
City. This service area gap is shown on FIGURE 5.
b. KING COUNTY WATER DISTRICT NO. 90
King County Water District No. 90 does not currently provide sanitary sewer service.
However, the District does have a sewer franchise boundary which is shown on FIGURE
7. The District had a Comprehensive Sewer Plan prepared in 1970,but has not proceeded
with the formation of a sewer district due to opposition from the community.
Since the District is reluctant to provide sewer service within its franchise boundaries, the
City is experiencing annexation pressures from property owners adjacent to the City
4-9
CHAPTER FOUR
limits. These annexation requests are for the purpose of obtaining sewer service. For
this reason and due to natural drainage patterns, the study area shown on FIGURE 5
extends outside the current City limits.
•
c. CEDAR RIVER WATER AND SEWER DISTRICT
Cedar River Water and Sewer District provides service to parts of the Lower Cedar River
Basin. However, only a small fraction of the wastewater from Cedar River Water and
Sewer District ultimately flows through the City of Renton's system by flowing through
the Soos Creek Water and Sewer District. The majority of sewage from Cedar River
Water and Sewer District flows directly into METRO's Cedar River Interceptor located
along the Maple Valley Highway. The District's last Comprehensive Sewer Plan was
adopted in 1983. According to the District's engineer, a revised Sewer Plan for Cedar
River Water and Sewer District is expected in 1991.
The sewer franchise boundary for Cedar River Water and Sewer District is shown on
FIGURE 7. A service area overlap occurs as a result of the City's recent annexation of
the park area located east of the Maplewood Golf Course. Currently, no sewerage
facilities are required; the City will provide these services.
The Wasmeta Park area is a service area gap between the City and the District. Currently
no sanitary sewer facilities exist within this area. If sewer service is needed or required,
the City should provide this service, due to its proximity on the north side of the Cedar
River.
d. SOOS CREEK WATER AND SEWER DISTRICT
Soos Creek Water and Sewer District adopted a Comprehensive Plan in 1987. The plan
acknowledges several service area overlaps with the City of Renton. The District also
proposes providing sewer service within portions of the Black River Basin within the City
of Renton.
Renton has an agreement with Soos Creek Water and Sewer District for joint use of a
sewer interceptor in the Tiffany Park Subbasin. The Springbrook Interceptor, owned by
the Soos Creek Water and Sewer District located on So. 192nd Street, could provide
service to the southernmost portions of the City of Renton. Soos Creek Water and Sewer
District currently has a sewer line in 96th Avenue So. north of So. 192nd Street within
the City limits. Its 1987 Comprehensive Plan shows the District providing service on
both the east and west sides of 96th Avenue So. within the Renton city limits.
4-10
•
Land Use Policies/Adjacent Systems/Design Criteria
The sewer franchise boundary for Soos Creek Water and Sewer District is shown on
FIGURE 7. Several service area overlaps occur because the City and the District are
currently negotiating revisions to the service'area boundaries between them. These
proposed revisions are shown on FIGURE 5. This agreement proposes that the City
serve some areas outside the City limits, and that the District serve some areas inside the
City limits.
e. CITY OF KENT
SW 43rd Street is the principaldividing line between the cities of Renton and Kent.
Renton has an agreement with Kent to'serve a small area south of SW 43rd Street east
of 72nd Avenue So. and west of the Puget Sound Electric Railway right-of-way. The
City of Kent Comprehensive Sewer Plan was adopted in 1980. The Renton and Kent
City limits adjoin each other as shown on FIGURE 7, and there are no service area
overlaps or gaps between the two entities, except for that one small area.
f. CITY OF TUKWILA
A portion of the City of Tukwila east of the Burlington Northern Railroad and south of
Longacres is served by the City of Renton. Tukwila also discharges from a lift station
into the METRO Sewer System within the City of Renton along SW 10th Street.
Tukwila prepared a Comprehensive Sewer Plan in 1984. This Plan shows the extension
of sanitary sewer service by the City of Tukwila into the City of Renton in the vicinity
of Longview Avenue So. and SW 33rd, ultimately connecting into the existing Renton
system along the railroad right-of-way. The 1984 Tukwila Plan also shows relocating two
sewer mains north of I-405 in the vicinity of 72nd Avenue So. and SW 10th Street within
the City of Renton in order to eliminate a pump station within the City of Tukwila.
The Renton and Tukwila City limits adjoin each other as shown onFIGURE 7.
However, a natural service area boundary between the two entities is the Green River,
which might be considered for a service area adjustment as shown on FIGURE 5.
g. SKYWAY WATER AND SEWER DISTRICT
A copy of the 1984 Comprehensive Sewer Plan for Skyway Water and Sewer District was
obtained from the District's engineer. The Plan appears to be a compilation of previous
plans that were done for King County and the predecessor to Skyway Water and Sewer
District. It appears, however, that no facilities within the Skyway service area directly
• discharge to, or would affect, facilities within the Renton sewer system.
i -
4-11
CHAPTER FOUR
The Skyway Water and Sewer District does not have a sewer franchise boundary
according to records provided by King County. However, the franchise boundary may
still be under the former King County Sewer and Drainage District No. 4. The service
area from the District's Comprehensive Sewer Plan is shown on FIGURE .7.
Approximately 60 percent of the District is served with sanitary sewer facilities. A large
area within the District, as well as in the service area gap to the south of the District,
could be served by gravity to the Renton sanitary sewer system. This area is shown on
FIGURE 5.
h. BRYN MAWR-LAKERIDGE WATER AND SEWER DISTRICT
According to maps provided by the District, Bryn Mawr-Lakeridge Water and Sewer
District serves a small area of Renton along Rainier Avenue near So. 117th Place.
Sewage from Bryn Mawr/Lakeridge discharges into the METRO System within the City
of Renton at the north end of the Renton Airport.
The sewer franchise boundary for Bryn Mawr-Lakeridge Water and Sewer District is
shown on FIGURE 7. The eastern part of the District could be served by gravity to the
Rentonsystem. This area is shown on FIGURE 5. However,unless this area is annexed
to the City; there is no advantage to this service area transfer.
D. ANALYSIS AND DESIGN CRITERIA
This section presents the design criteria for sanitary sewage collection system analysis and design.
Analysis is necessary to determine the adequacy of the existing system and to identify needs for
future facilities. The analysis and design criteria are based on "Criteria For Sewerage Works
Design" prepared by the Washington State Department of. Ecology, the Municipality of
Metropolitan of Seattle (METRO), the City of Renton Standards, actual water usage records, and
other accepted engineering criteria and standards for sanitary sewer design and construction.
1. WASTEWATER FLOW RATES - DEFINITION
•
Wastewater in the service area is generated by the population and by non-residential users within
it. The Renton Comprehensive Land Use Plan identifies eleven, separate land use categories.
For sanitary sewer planning purposes, these eleven categories were used to determine wastewater
flow rates for the hydraulic computer model. The eleven land use categories are listed in
TABLE IV-3.
•
Eleven saturation land use populations were determined by calculating the areas of. each
designated land use category. This was accomplished by assigning land use designations to all
parcels within a land use boundary on a computer base map that was used for producing the
4-12
Land Use Policies/Adjacent Systems/Design Criteria
figures for this plan. Saturation was defined as the point at which development is complete
within a land use designation.
2. - WASTEWATER FLOW CRITERIA •
Wastewater flows can be divided into four major components, which are 1) domestic wastes, 2)
industrial wastewater, 3) infiltration, and 4) inflow. The wastewater flow criteria used for each
• or these four components is presented in TABLE IV-5.
a. DOMESTIC WASTEWATER
Domestic wastewater flows are essentially equal to winter-time water consumption.
Domestic wastewater flows are typically established on a per capita basis. The average
domestic wastewater flow used for analysis and design of the sanitary sewer system is 80
gallons per day per person.
•
b. COMMERCIAL/INDUSTRIAL WASTEWATER
Commercial and industrial wastewater is defined as the wastewater generated from a
specific commercial or industrial operation. Commercial and industrial wastewater does
not include waste generated by employees of the industry, which are considered domestic
waste and excluded from this category.
c. INFILTRATION
Infiltration is the entrance of groundwater into the sanitary sewer system through cracks,
pores, breaks, and defective joints in the sewer piping network. Additional infiltration
• also results froth the entrance of storm- water through manhole covers. The quantity of
water that may infiltrate into a sanitary sewer system depends upon many variables, such
as the age of the system, materials used in construction, and the service area's hydrology,
soils and groundwater level. However, the design of the sewer system, including mains,
laterals, and individual connections, along with inspection during construction, will have
substantial impact on the quantity of infiltration.
Due to improvements in construction materials and practices, systems installed after 1960
generally show a decrease in the quantity of groundwater infiltration. The use of non-
porous piping materials and rubber-gasketed type joints will help reduce infiltration and
will improve the condition and life of the sanitary sewer system. The design allowance
for infiltration is shown in TABLE IV-5.
4-13
i
CHAPTER FOUR
TABLE IV-5: WASTEWATER FLOW CRITERIA
Average Domestic Sewage Flow: 80 gals/day/person
Average Population Density 2.40 person/dwelling unit single-family
(U.S Census Bureau, 1980): 2.20 person/dwelling unit multi-family
Residential Density:
Single-Family Residential 6 dwelling units/acre
Low-Density, Multi-Family
Residential 12 dwelling units/acre
Medium-Density,Multi-
Family Residential 18 dwelling units/acre
High-Density,Multi-
Family Residential 24 dwelling units/acre
Commercial and Industrial Sewage Flows*:
Light Industrial 2800 gals/acre/day (gpad)
Heavy Industrial site specific
Commercial 2800 gpad
Office 2800 gpad
Recreation 300 gpad
Green Belt 0 gpad
Public 600 gpad
Manufacturing Park 2800 gpad
Infiltration and Inflow (METRO):
Peak Infiltration 700 gpad
Peak Inflow 600 gpad •
Peaking Factors
System Average 2.0 x
Depth/diameter ratio 0.70
Design flow criteria vary considerably, depending upon land use
• 4-14
Land Use Policies/Adjacent Systems/Design Criteria
d. INFLOW
Inflow refers to direct flows of stormwater into sanitary sewer systems through hookups
from stormwater collection facilities and illegal connections. Stormwater inflow is due
mainly to unauthorized connections to the sanitary sewer system. The enforcement of
regulations banning the illegal connections to the sanitary sewer system along with
continued efforts to identify and correct previously unauthorized connections minimize
stormwater inflow. The design allowance for stormwater inflow is shown in TABLE IV-
5.
3. SANITARY SEWER DESIGN CRITERIA
All sewer lines within the City of Renton shall be designed in accordance with good engineering
practice by a professional engineer with minimum design criteria presented in Chapter 2 of the
"Criteria for Sewerage Works Design", prepared by the State of Washington Department of
Ecology, October 1985,or as superseded by subsequent updates. This chapter includes standards
and guidelines for design considerations (minimum pipe sizes, pipe slopes and wastewater
velocities),maintenance considerations,estimating wastewater flow rates,manhole locations,leak
testing and separation from water pipelines. These criteria have been established to ensure that
the sanitary sewers convey the sewage and protect the public health and the environment. The
sewer lines shall also conform to the latest City of Renton Standards and Specifications. Detailed
standards are included in Title 8, Chapter 5 of the City Code which is presented in Appendix D.
Requirements relating to design are listed below.
a. DESIGN LOADING FOR SANITARY SEWER FACILITIES
Sanitary sewer system flows are composed of residential, institutional, commercial, and
industrial sewage, along with infiltration and stormwater inflow. Sanitary sewer systems
must be capable of conveying the ultimate peak flows of these wastewater sources. No
overflows shall be permitted.
b. DESIGN PERIOD
The design period is the length of time that a given facility- will provide safe, adequate
and reliable service. The period selected for a given facility is based on its economic life,
which is determined by the following factors: the structural integrity of the facility rate
of degradation,cost of replacing the facility, cost of increasing the capacity of the facility,
and the projected population growth rate serviced by the facility. Collection and
interceptor sewers are designed for the ultimate development of the contributing area.
The life expectancy for new sanitary sewers, using current design practices, is in excess
of fifty years.
4-15
CHAPTER FOUR
c. DESIGN OF SANITARY SEWER FACILITIES
Allowable sewer pipe shall be ductile iron, cast iron, PVC, or concrete. For normal
depth, PVC is generally preferable, because it has longer laying lengths, which resultsin
fewer joints, reducing the potential for infiltration.
Gravity sewers are sized to provide capacity for peak, wet-weather flows. The smallest
• diameter sewer allowed is 8-inches. All sewers will be laid on a grade to produce a mean
velocity when flowing half-full of at least 2 feet per second. Manholes will be at least
48-inches in diameter and will be spaced at intervals not to exceed 400 feet on sewer
lines 15-inches in diameter or less, and 500 feet on sewer lines 18-inches in diameter or
larger. The design parameters are summarized in TABLE IV-6.
d. ROUGHNESS COEFFICIENT
The Manning equation shall be used to design and analyze wastewater flow characteristics
of the sanitary sewers. The Manning roughness constant [n] shall vary depending on the
pipe material. Typical values are summarized in TABLE IV-6.
e. REFERENCE DATUM
The King County Aerial Survey (K.C.A.S.) is the common datum used within the City
of Renton for design and construction of sanitary sewer facilities.
f. SEPARATION BETWEEN SANITARY AND OTHER FACILITIES
The Department of Ecology requires separation of water and sewer facilities for health
reasons. Sanitary and storm sewer facilities shall have basic separation requirements for
construction purposes. A minimum horizontal separation of five(5) feet between sanitary
and other facilities shall be maintained. Wherever possible, a horizontal separation of
seven (7) feet is desirable. These distances are measured edge to edge.
g. HYDRAULIC ANALYSIS
The sanitary sewer system hydraulic analyses will be performed using the City's hydraulic
computer model. All new developments, with the exception of developments involving
less than five single-family residences, will require an analysis. The developer shall be
responsible for paying the cost of the analysis of the sanitary sewer system. If the
analysis concludes improvements need to be made, the developer and the City may need
to negotiate about who will pay the costs.
4-16
• Land Use Policies/Adjacent Systems/Design Criteria
•TABLE IV-6: SANITARY SEWER DESIGN CRITERIA
Sanitary Sewer Sizing Peak Wet-Weather Flow
Minimum Sewer Size 8-inches in Diameter
Pipe Materials PVC
Reinforced Concrete Pipe
Cement Lined Ductile Iron
Cement Lined Cast Iron
Manholes •
Maximum Spacing 400 feet
Minimum Manhole Size 48-inches in diameter
- Minimum Clear Opening 23-inches in diameter
Maximum Depth • 20 feet(where possible)
Separation From Water Mains
Horizontal Separation (Parallel) 10 feet
Vertical Separation (Perpendicular) 18-inches
•
Hydraulic Criteria
Depth to Diameter Ratio 0.70
Minimum Scouring Velocity 2 Feet Per Second
-- Manning Roughness Coefficient
PVC 0.011
Concrete 0.012
Lined DI/CI 0.012
Vitrified Clay 0.013
4. LIFT STATION DESIGN CRITERIA
Sewage lift stations within the City of Renton shall be designed in accordance with good
engineering practice by a professional engineer using the minimum design criteria presented in
Chapter 3 of the "Criteria For Sewerage Works Design", prepared by the Washington State
Department of Ecology,October 1985, or any subsequent updates, and shall conform to the latest
4-17
I
_ I
CHAPTER FOUR
City of Renton standards and specifications. Detailed standards are included in Title 8, Chapter
5 of the City Code, which are presented in Appendix D. Requirements relating to the design are
listed below.
a. DESIGN LOADING FOR LIFT STATIONS
Lift stations shall be designed to handle the peak, wet-weather flow from the contributing
area. All lift stations shall have a minimum of two pump units, each with the capacity
to handle the expected maximum flow.
b. DESIGN PERIOD
The design period for lift stations shall take into consideration long-term needs,
replacement or expansion difficulties, service area growth rate and useful life. A lift
station should have a minimum design period of twenty years for the facility and ten
years for mechanical and electrical equipment. Consideration should be given to longer
design periods for lift stations that are expected to serve an indefinite life. Consideration
must also be given to the ability of the consumers to pay for the facilities.
c. DESIGN OF LIFT STATION FACILITIES
Lift stations shall be designed with a minimum of two pumps, both of which have the
capacity to convey peak, wastewater flow rates. If wide variations in wastewater
flowrates are expected into the lift station, then consideration should be given to the use
of three or more pumping units. If three pumps are used, two of them must have the
• . capacity to convey peak, wastewater flow rates. Each pump shall be capable of passing
spheres of at least 3-inches in diameter.
•
Each lift station will be provided with either an on-site or portable power backup. A lift
station designed for portable power backup will be provided with sufficient wet-well
storage to allow adequate time for City maintenance personnel to transport setup, and
provide the necessary backup, during a power outage. Wet-well storage will be designed
on the basis of the peak, wet-weather flow.
Force mains shall be sized to maintain a minimum velocity of 2 feet per second. The
force main shall have a maximum velocity of 10 feet per second when all pumps are
operating together. Regardless of these velocity criteria, minimum size shall be 4-inches
in diameter.
4-18
' J
Land Use Policies/Adjacent Systems/Design Criteria
5. ELIMINATION OF LIFT STATION FACILITIES
Lift station facilities are typically eliminated through the development of the gravity sewer
system. Highest priority should be given to elimination of lift station facilities because their high
degree of vulnerability and high operation and maintenance costs. These considerations include
environmental risks, life-cycle costs, lift station impacts on downstream sanitary sewer facilities,
vulnerability to vandalism, and lift station accessibility.
•
•
•
4-19
CHAPTER FOUR
•
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4-20
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RH2 ENGINEERING. P.S.
CHAPTER V
SYSTEM ANALYSIS & RESULTS
CHAPTER V
SYSTEM ANALYSIS & RESULTS
A. INTRODUCTION
This chapter presents a detailed analysis of the existing system and its recommended
improvements. Three system components--the wastewater collection system, lift stations and the
telemetry and control system--are identified and described, and the results of either their
hydraulic or structural analysis are presented. Other deficiencies that do not fit under one system
component are presented at the end of this chapter.
Many sections of the existing sanitary sewer system have problems which fall into four
categories: deficient capacity, aging pipes, infiltration and inflow, and combined sewers.
Capacity problems in the existing sanitary sewer system have been identified using a hydraulic
computer model. The hydraulic analysis was conducted by entering saturation wastewater flow
rates in a computer model of the existing system to determine if it could adequately convey them.
Capacity problems do occur throughout the system in various degrees and are a result of
inadequate pipe sizes or slopes.
Much of the existing sanitary sewer system was installed during the 1940s and 1950s as a federal
program to provide housing for workers at the Renton Boeing Plant. Many of these sewers have
reached the end of their useful economic life and require replacement. Many of them are in the
North Highlands and South Highlands Subbasins. The City of Renton is currently in the process
of replacing these aging sanitary sewers.
Infiltration and inflow occur in all sanitary sewer systems. Infiltration is defined as water
entering the sanitary sewer system through pipes, joint connections, manhole covers and walls.
Inflow is defined as water discharged to the sanitary sewer system through connections to roof
drains, yard drains, foundation drains, and cross connections with storm sewers and combined
sewers. The combination of both infiltration and inflow can be a major portion of the total
wastewater flow which must be carried by the sanitary sewer system. Infiltration and inflow
problems in an existing sanitary sewer system can be studied to determine their effect. Many
infiltration and inflow problems can be corrected through grouting of existing pipes and
manholes, replacing damaged pipes, and eliminating illegal connections to the sanitary sewer
system.
Combined sewers are designed to carry both stormwater and wastewater within a single system,
which current design practices in the City of Renton do not allow because it causes stormwater,
which is relatively clean, to be treated along with wastewater. Combined sewer systems within
the City have been replaced with separate sanitary and storm sewer systems, except for one along
the lakefront in the Kennydale area.
5-1
CHAPTER FIVE
1. HYDRAULIC ANALYSIS
A hydraulic computer model of the City's sewer system was developed as a part of this plan
update. The purpose of this model was to 1) evaluate the existing sanitary sewer system and to
determine areas of capacity constraint,and 2) to provide a tool for planning future improvements.
The hydraulic computer model was created using a software package designed by Specialized
Software Products, Inc., of Tukwila, Washington.
Two basic kinds of data were needed for the computer model: physical data and wastewater flow
data. The physical data of the sanitary sewer system was taken from as-built drawings and other
records provided by the City. Physical data was only available for 60 to 70 percent of the
sanitary sewer system. As a result the unmodelled portion of the sanitary sewer system cannot
be evaluated using this computer model. The physical data entered into the computer model
included manhole numbers, pipe invert elevations at each manhole, and pipe length, diameter,
and material type. Physical data not entered was the age or date of construction of the various
system components. .
The wastewater flow rates entered into the computer were based on estimated saturation
conditions because those are the basic criteria around which sanitary sewer facilities are designed.
Domestic wastewater flow rates were determined by calculating land use designations for the
entire City. The wastewater flow rate criteria set for each land use designation is summarized
in TABLE IV-3. The entire sanitary sewer system was first divided into sections and those
sections divided into their land use designations. The total area of each land use designation
within each section was calculated and then used to determine the domestic wastewater flow rate
and infiltration and inflow data. The resulting flow rates and data were then divided equally
amongst the sanitary sewer manholes within that land use designation. Pump flow rates from
each of the lift stations were determined through review of the operations and maintenance
manuals, and this flow data was distributed to the appropriate manholes.
The hydraulic computer model output was developed through a mathematical synthesis of the
physical data and wastewater flow rate information which was entered into the model's data base
for each pipe section. The maximum capacity of each pipe section was determined using the
Manning's equation. A depth to diameter ratio of 0.70 was used to describe the maximum,
desired hydraulic condition within a pipe section. The Manning's co-efficient.for the various
pipe materials is listed in TABLE IV-6. The slope used iri the Manning's equation was
calculated by the computer model using the invert elevation of the upstream -and downstream
manholes.
The expected peak, wet-weather flow rate at saturation was calculated using the various flow
rates entered onto the model data base. A peaking factor of 2.0 was applied to the domestic flow
rate entered into each manhole. The peak, domestic flow rates, infiltration and inflow, and lift
5-2
System Analysis and Conclusions
station flow rates were then summed downstream through the entire basin. The model output
includes the peak,_wet-weather flow rate and maximum velocity for saturation conditions.
The hydraulic analysis of the existing sanitary sewer system involved several steps. First, a
comparison between the peak, wet-weather flow rates and the maximum capacity of each pipe
section was made. A pipe section was determined to be over capacity if the ratio of the peak,
wet-weather flow rate to the maximum flow rate was over 70 percent. This provided a safety
factor which would help account for variations in the Manning's co-efficient and missing data
not entered into the computer data base. The second step identified the pipe sections with
adverse pipe slopes (those pipe sections where the upstream ,manhole is lower than the
downstream manhole), and the third step identified pipe sections which were constructed with
inadequate slopes to achieve carrying velocity.
This model will.be used by the City in the future to evaluate changes to the existing system or
additions to the system during the design phase of each sewer project. However, to increase the
reliability of the model output, it is necessary that the City generate the physical data for the
remaining sewer system that is not currently modeled. In addition, the existing physical data and
wastewater flow data entered in the current model should be checked and verified. Finally, a
model report should be prepared in order to document the information used in developing the
model and to generate a complete print out of both the input data and the output results.
2. STRUCTURAL ANALYSIS
A structural analysis is a visual inspection of the existing system either by a video camera or an
actual inspection during normal operations and maintenance.
The Sanitary Sewer Maintenance Division owns and operates its own sewer video inspection
equipment. At this time, the video equipment is used approximately one day per week. Video -
inspections have been organized and documented since 1988.
The video inspection averages approximately 1500 feet per day. The inspection process requires
hydraulic jet cleaning of the sanitary sewer section prior to the video inspection. After
completion of the video inspection, roots are cut and cracks are sealed, if necessary, before
proceeding to the next section. The video inspection requires three people to operate. If traffic
control is necessary, two additional people are required. At the current rate, it will take twelve
years to video inspect all existing sanitary sewers. It is recommended that sewers near the end
of their useful life'be video inspected every five years. All other sewers should be inspected
every ten years.
Currently, the video tapes taken by the maintenance crews are stored and cataloged at the City
Shops. However, sanitary sewer video tapes of new additions are stored in uncataloged boxes
5-3
•
CHAPTER FIVE
which are then placed in the City's archives. The City should catalog all sanitary sewer video
tapes using a computerized data base and store them in a single location for easy retrieval.
B. .- SYSTEM-WIDE CONCERNS
1. METRO - INTERCEPTOR SURCHARGE
During peak flows,METRO will use its interceptors for storage of wastewater and for controlling
flows in the Renton Treatment Plant. This results in surcharging of the METRO Interceptors.
METRO reserves the right to surcharge its interceptors to an elevation of 22 feet. METRO has
never reached this extreme; however, the City has experienced a sewer surcharge problems in the
low lying areas. The surcharge elevation of 22 feet is shown on the Sanitary Sewer Hydraulic
Profile (FIGURE 2). This hydraulic profile illustrates that the City's sanitary sewers would be
affected by METRO's surcharging, because their inverts are below the 22-foot elevation. As a
• result of METRO's surcharging, it is possible that additional wastewater could overflow in low
lying areas through manhole covers and side sewer connections.
The City has not designed facilities to accommodate a sewer surcharge to an elevation of 22 feet.
The City's current position is that METRO is responsible for providing adequate capacity within
its interceptors and wastewater treatment facilities. In addition, the City considers METRO to
be responsible for proper effluent disposal. During the preparation of this Comprehensive Sewer
Plan, no analysis was made of the effect of METRO's surcharging on the City's sewer system.
METRO should conduct such a study to identify areas of potential risk and alternatives to
mitigate this problem.
2. ADJACENT UTILITY SYSTEMS
For purposes of this plan, all of the comprehensive plans for the adjacent utility systems
described in Chapter 4 were examined. This plan's analysis used their predictions for the future
capacity they will need when they convey wastewater through Renton. However, adjustments
to the City's interceptors may need to be made as these systems further clarify their needs. The
City of Renton has several agreements with adjacent utilities that allow joint use of facilities
within the City. It is important that these adjacent utilities are restricted to the volume of
wastewater discharged to the joint use facilities. If capacity problems become evident, through
visual inspection or flow measurements, then the City and the.adjacent utility should work
together to investigate the potential sources both inside the City and within the adjacent utility
to correct the problem.
5-4 .
System Analysis and Conclusions
•
3. STRUCTURAL PROBLEMS
The following is a discussion of specific problems that are associated with the gravity sanitary
sewer system in the City of Renton. •
AGING SEWERS
Many of the gravity sewers within the central business district and the Highlands were
constructed in the 1940s as a result of housing construction during the war for the Boeing
plant in Renton. Many of these sewers have reached their design life expectancy
(approximately 50 years); as these sewers approach the end of their useful life, increased
maintenance and structural inspections should occur to locate and prevent pipe failures.
This comprehensive plan identified some of the older sewers and has established a capital
improvement program to replace and upgrade them. The City should continue this
process.
REVERSE SLOPES AND PIPE SAGS
A major maintenance problem, associated with sanitary sewers that are laid with a reverse
slope, or have a sag due to improper construction or differential settlement, is that they
require periodic cleaning to remove debris. There are approximately 90 such_sewer
sections within the City.
ROOT PROBLEMS
Tree roots cause problems in sanitary sewers by penetrating and cracking sanitary sewer
pipe joints to feed on. wastewater. Tree roots can also create blockages, resulting in
backed-up sewers. The City has approximately 30 sections of pipe which require routine,
root cutting maintenance to prevent wastewater backups and reduce pipe damage.
GREASE PROBLEMS
Grease problems are .typically associated with major food processing operations, the
. majority of which are restaurants where grease is a component of the wastewater. Many
of the older restaurants within the City do not have grease traps. Newer restaurants have
been and will continue to require the installation of grease traps; however, many of these
grease traps are not properly maintained because of a lack of proper monitoring. Grease
buildup problems occur most often in the side sewers. However, some grease buildup
• problems also occur in the sanitary sewer collection system. When problems do occur,
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•
CHAPTER FIVE
the City maintenance crews are usually called out to investigate. The City will need to
allocate additional maintenance hours for monitoring this problem. Ultimately, a proper
monitoring program should reduce maintenance time involved in removing grease buildup.
Preventive maintenance should involve the installation of grease traps in all restaurant and
food processing type facilities and proper maintenance of those grease traps. An
ordinance should be prepared requiring owners of grease traps to write a letter, on an
annual basis, certifying that proper inspection and maintenance have been performed.
Certification should require a small fee to cover administrative costs. Fines should be
imposed for certification fraud of improper inspection and maintenance practices. In
addition, cost of cleanup due to problems associated with improperly maintained grease
traps should be assessed to property owners.
4. EARTHQUAKE PREPAREDNESS
The Seismotectonic Map of the Puget Sound Region (Gower and others, 1985) shows two
significant faults and three small faults less than 10 miles from Renton City Hall. These faults
are zones of weakness in the bedrock that could possibly be the sites of future earthquakes. The
largest fault lies north of Renton; it is inferred on the basis of an abrupt change in relief (an
escarpment) in the bedrock topography of the Puget Lowland. Many small earthquakes (<3.5 on
the Richter Scale) have been detected along this escarpment, especially beneath Seattle and
Mercer Island where the depth to bedrock is deepest. The escarpment has an east-west trend
which is perpendicular to the regional,north-south structural trend of the Puget-Willamette trough
and the Cascade range. Because the basin in the bedrock north of this escarpment is filled with
sediments, it is not expressed at the surface from Winslow to Mercer Island. However, east of
Mercer Island, where it closely parallels I-90, it is marked by the high relief of the Newcastle
Hills, Squak Mountain and Tiger Mountain. The middle to lower Tertiary rocks comprising those
hills, and possibly upper Tertiary sediments (Walsh,personal communication, 1990) are•strongly
folded. Despite the seismic record of numerous earthquakes along the escarpment, no rupture
or deformation of the ground surface appears to have occurred during the last 15,000 years.
Another major fault that passes through Renton may begin in Bremerton and extend to Issaquah
or connect with the well defined Hobart fault east-south-east of Renton. This fault is locally well
expressed in lower to middle Tertiary rocks, but it does not deform Vashon glaciation and
younger sediments (<15,000 year old). Furthermore, because historical earthquakes are not
concentrated along its trend, this zone of weakness in the bedrock does not appear to be hazard.
Similarly, smaller faults west of Renton in Tukwila and through the South Center area, cut only
the bedrock and do not appear to have been active for at least 15,000 years.
Although direct rupture of the ground surface due to a major earthquake originating in the Renton
area is unlikely, ground shaking and failure resulting from a regional magnitude 6.5 to magnitude
5-6
System Analysis and Conclusions
7.5 earthquake is likely during this decade. The recurrence interval for deep earth quakes (>40
km deep) of this magnitude is about 25 years in the Puget Lowland.
Because so many earthquakes have occurred during the 14,000 years since the glacially sculpted
landscape emerged from beneath the melting ice, most features and sediments are adjusted to the
ground motion of magnitude 7 or an even larger event. However, steep slopes that have been
undercut by rivers, man or the natural weathering and sapping processes of migrating
groundwater, will be susceptible to failure. Particularly likely to fail (liquefy or slump) are areas
of recent fill like the Cedar River delta and man-made deposits of insufficiently compacted
saturated sandy to silty soils.
In general, structures close to bedrock will be less impacted by ground motion than those on
unconsolidated sediments or man-made fill. However, the topography of the bedrock surface
beneath Renton will have a major influence on the focusing or attenuation of seismic energy.
Areas overlying old valleys or basins in the bedrock, where fill may be hundreds of feet deep,
may receive up to ten times the shaking that neighboring bedrock hillsides will experience (Ihen
and Hadley, 1986). Thus, facilities designed for the Duwamish valley and Maplewood area will
have to meet higher standards of seismic design.
Water and sewer systems of the Renton area will very likely experience the significant ground
motion associated with about a magnitude 7 earthquake during the 1990s. Because Renton has
developed both on bedrock and deep fills of unconsolidated sediments, seismic energy will be
locally focused, and very different degrees of ground motion will be experienced by different
parts of the system. Lift stations should be located as close to bedrock as possible, and the
system should be designed to accommodate significant changes in seismic stress over relatively
short distances (tenths of a mile).
C. WASTEWATER COLLECTION BASINS
The following section of this chapter presents an analysis of wastewater collection basins, which
is presented in an order based on the seriousness of each basin's deficiencies. See FIGURE 1
for a location of basins. A brief summary of those deficiencies follows.
• The wastewater within the May Creek Basin is currently diverted into the Lake
Washington East Basin causing an overload of that system. The construction of
the May Valley Interceptor is necessary to correct these problems.
• In the Lower Cedar River Basin, a moratorium on development is in place because
the sewer pipe lines are currently over capacity.
5-7
CHAPTER FIVE
• Lake Washington East Basin currently receives wastewater from the Sunset Lift
Station which significantly contributes to overloading the North Highlands
Interceptor.
• The Panther Creek subbasin in the Black River Basin is at or near capacity; the
Renton Industrial Subbasin is experiencing increasing demands as a result of land
use changes.
• In the Lake Washington West Basin, the West Renton subbasin has sections of
sewer lines that experience some capacity problems.
• The Duwamish Estuary Basin is for the most part undeveloped and is not
experiencing capacity problems at this time.
1. MAY CREEK BASIN
The May Creek Basin is located in the northeast part of the City. Most of this basin is currently
unsewered and is located on the periphery of the City's current service boundary. The May
Creek Basin is jointly served with King County Water District No. 107. The City serves
approximately 910 acres of this basin which consists of primarily single-family and light
commercial land uses. The ultimate sewerage of the May Creek Basin will be through the
extension and completion of the proposed May Valley Interceptor (whether by METRO, the City
or King County Water District No. 107). At this time, there are three lift stations serving low
lying areas along Lake Washington in this basin. These are the Misty Cove, Baxter and Denny's
Lift Stations.
The City is experiencing development pressure within the May Creek Basin and the Honey Creek
Subbasin,which requires immediate attention be given to the sanitary sewer facilities in this area.
The primary concern is the Devil's Elbow Lift Station. This lift station was designed and
constructed in 1985 to accommodate existing development. In addition, the Devil's Elbow Lift
Station has experienced operational problems and the force main is structurally unreliable due
to soil movement along NE 27th Street.
The City is attempting to accelerate the construction of the May Valley Interceptor with the
assistance of King.County Water District No. 107. The May Valley Interceptor would eliminate
the need for the Devil's Elbow and Sunset Lift Stations. Elimination of these lift stations would
also eliminate many of the capacity problems within the Kennydale and North Renton Subbasins.
However, completion of this interceptor, along with Phase IV of the Honey Creek Interceptor,
is not expected until 1993 at the earliest.
5-8
_ System Analysis and Conclusions
Interim improvements to the Devil's Elbow Lift Station should be studied. These interim
improvements could be completed in 1991 and would increase the reliability and possibly the
• capacity of the Devil's Elbow facilities.
HONEY CREEK SUBBASIN
•
The May Creek Basin includes the Honey Creek Subbasin, which is currently served by
the Sunset, Summer Wind and Devil's Elbow Lift Stations. These lift stations currently
pump wastewater collected in the Honey Creek Subbasin to the Lake Washington Basin
East. They will be removed from service after completion of the May Valley Interceptor
and the Honey Creek Interceptor.
This is a large subbasin serving approximately 430 acres of the city. The sewage is
routed to Sunset Lift Station where it is pumped to the North Highlands Subbasin. A
serious capacity problem exists in this subbasin within the interceptor along Sunset
Avenue east of Union Avenue. The sanitary sewers within the Honey Creek Subbasin
are designed to direct 95 percent of the wastewater toward the Sunset Lift Station. This
results in excessive overloading of this lift station. On many occasions the Sunset Lift
Station is required to operate both pumps continuously for several days, which is an
undesirable operating condition. In addition, wastewater discharged from this lift station
adversely impacts gravity sewers in the North Highlands Subbasin. If the sunset lift
station cannot pump all of the incoming flow, the wastewater is automatically discharged
through an overflow device to the Honey Creek Interceptor and is then pumped to the
Kennydale Subbasin through the Devil's Elbow Lift Stations.
During peak storm events, wastewater flow rates have been know to exceed the capacity
of both the Sunset and Devil's Elbow Lift Stations, resulting in raw sewage overflows
into Honey Creek. A large potential for development exists within this subbasin, and the
correspondingly higher flows will create more extensive capacity constraints in the future.
A more detailed description of the capacity problems of the Devil's Elbow Lift Station
can be found in the lift station section of this chapter.
As reported in the 1983 Comprehensive Sewer Plan, sanitary sewers within the Honey
Creek Subbasin exhibit substantial amounts of infiltration and inflow, which results in
excessive:loading of the Sunset Lift Station and periodic overflows into Honey Creek.
In an attempt to reduce the amount of infiltration and inflow within this subbasin, the City
contracted with Gelco Grouting Service to examine and correct infiltration and inflow
• problems within this basin. The work was separated into three phases under project Nos.
S-370(1983), S-379(1985), and S-421(1986). In addition, the City also constructed the
Honey Creek Interceptor, which is currently designed to receive the wastewater from the
Honey Creek Subbasin that cannot be handled by the Sunset Lift Station.
5-9
CHAPTER FIVE
2. LOWER CEDAR RIVER BASIN
The Lower Cedar River Basin includes the eastern portion of the City of Renton bordering the
Cedar River. The City serves approximately 2610 acres at this basin which consists of primarily
single-family and multi-family developments with some commercial and light industrial land
uses. This basin includes the Central Renton, South Highlands, Maplewood, Heather Downs,
East Maplewood, and Tiffany Park Subbasins.
Due to extensive development and annexation pressures within this basin, an engineering
investigation of the sanitary sewer system in the South Highlands, Maplewood and Heather
Downs Subbasins was performed in the spring of 1989 by RH2 Engineering. The results of this
study are present in a report entitled An Engineering Investigation of Sanitary Sewer Facility
Improvements for the East Renton, Heather Downs, and South Highlands Areas. These results
indicated inadequate sanitary sewer capacity in the South Highlands and Heather Downs
Subbasins, and limited available capacity in the Maplewood Subbasin.
As a result of this engineering investigation, the City Council passed Resolution No. 2764,which
established a moratorium on the connection of new construction to any of the existing sanitary
sewers in the South Highlands, and Maplewood or Heather Downs Subbasins. The moratorium
will be in effect until January 31, 1992, unless extended by the City Council. The City is
currently working on the environmental study and predesign alternatives for the proposed East
Renton Interceptor which would solve the sanitary sewer capacity problem. --
CENTRAL RENTON SUBBASIN
The Central Renton Subbasin includes the central business district of the City located
north of the Cedar River and south of North 3rd Street. Many of the sewers in this
subbasin are old and some have experienced structural failure. This area is within Zone
1 of the Aquifer Protection area, and exfiltration from these sewers could contaminate the
City's drinking water supply. This area consists primarily of residential and commercial
land uses.
SOUTH HIGHLANDS SUBBASIN
The South Highlands Subbasin is located south of NE 7th Street and north of NE 4th
Street in the Highlands area. Land use in this subbasin consists primarily of single-family
residential developments.
This is a large subbasin serving approximately 600 acres. It connects into the METRO
Interceptor at North 4th Street and Logan Avenue North. Two lift stations pump into this
basin: Honeydew and Union 600. As a result of development pressures within this
5-10
System Analysis and Conclusions
•
subbasin, an engineering investigation on the sanitary sewer system was performed in
1990 by RH2 Engineering. The results of this study are presented in a report entitled An
Engineering Investigation of Facility Improvements for the South Highlands Sanitary
Sewer Basin. The major problem it identified is an inadequately sized interceptor, which
the report presented options for correcting. The capacity created through the East Renton
project will benefit this basin.
MAPLEWOOD SUBBASIN
The Maplewood Subbasin is located primarily south of NE 4th Street. This area serves
a variety of land uses including single-family and multi-family residential as well as some
commercial and light industrial land uses. This subbasin receives wastewater pumped
from the Union 600 Lift Station. This subbasin connects into the METRO Cedar River
Interceptor along the Maple Valley Highway.
This subbasin has adequate sewer capacity for existing development. However, future
development will require either the construction of additional sewer capacity or the
reduction of existing wastewater flows such as the elimination of the Union 600 Lift
Station.
HEATHER DOWNS SUBBASIN
The Heather Downs Subbasin is located along the eastern border of the City Limits. This
subbasin consists primarily of single-family residential development with some multi-
family developments in the northern portion of this subbasin. Several capacity problems
currently exist within this subbasin. The City is currently developing solutions through
the East Renton Interceptor project which would alleviate the sewer capacity problems.
This project is in the predesign and environmental review stage.
In addition to the capacity problems in the Heather Downs Subbasin, a section of the
Heather Downs Interceptor was constructed on a very steep slope (approximately 65%
' slope). The sewer section in question is located along a power line easement near the plat
' of Maplewood. It was constructed using 10-inch PVC sewer pipe with concrete collars
to stabilize the pipe on the steep slope.
No indication of potential structural failure exists. However, a study should be conducted
to determine the integrity of the sanitary sewer. The.City should video inspect this sewer
to examine the internal integrity and to locate any pipe or manhole movement. If a
•
5-11
•
CHAPTER FIVE
•
problem is'found, a geotechnical consultant could examine the steep slope for stability
and the potential of soil shifting. This information will help determine the need for
construction of an interceptor in a new alignment. •
EAST MAPLEWOOD SUBBASIN
The majority of the East Maplewood Subbasin is located outside the City limits.
Currently a majority of this basin is unsewered. The small portion that is sewered is
being pumped to the South Highlands Subbasin through the Honeydew Lift Station. With
recent development in this area, the City is currently studying the construction of an
interceptor in this subbasin to serve areas within the City through the East Renton
Interceptor Project.
TIFFANY PARK SUBBASIN
The Tiffany Park Subbasin is located on the south side of Cedar River. This subbasin
includes primarily single-family and multi-family developments. This subbasin includes -
two lift stations: the Falcon Ridge Lift Station and the Cottonwood Lift Station. In
addition, this subbasin receives wastewater from the Soos Creek Water and Sewer
District.
The Tiffany Park Interceptor is a joint use facility between the City of Renton and the
Soos Creek Water and Sewer District (formerly Cascade Sewer District). The gravity
interceptor is currently not experiencing capacity problems, but there is evidence that
peak, wastewater flows exceed the design capacity of METRO's inverted siphon crossing
the Cedar River. METRO is considering replacing the inverted siphon with a new gravity
sewer which would be sized to accommodate these peak flows. This new METRO sewer
would be located on a bridge over the Cedar River that could be used for a proposed trail.
The majority of the wastewater in this interceptor originates in the Soos Creek system,
including Soos Creeks Lift Station No. 5. According to the Soos Creek Comprehensive
Sewer Plan, Lift Station No. 5 is considered to be a permanent facility which serves a
large basin. As development of this basin proceeds, increased pumping from the lift --
station will aggravate capacity problems in METRO's inverted siphon and increase the
potential for wastewater release to the Cedar River.
•
3. LAKE WASHINGTON EAST BASIN
The Lake Washington East Basin is located in the northern part of the City and includes the
Kennydale, North Highlands and North Renton areas of the City. The City serves this entire
basin of 2100 acres which consists of a variety of land uses including single-family and multi-
5-12
System Analysis and Conclusions
family residential, light commercial and heavy industrial activities. This basin is divided into
four subbasins which collect wastewater and transport it to METRO's East Side Interceptor.
KENNYDALE LAKEFRONT SUBBASIN •
The Kennydale Lakefront is the northernmost subbasin in the Lake Washington East
Basin. This subbasin serves primarily residential communities and includes the Lake
Washington Flush Station and Lake Washington Lift Station No. 2, which serve the
residential community adjacent to Lake Washington (Coleman Point).
This is a medium size subbasin of approximately 110 acres which has almost reached
saturation development. This subbasin connects into the METRO Interceptor at N. 38th
Street and Lake Washington Boulevard.
The Kennydale Lakefront sanitary sewer collection system is a low-pressure, force main.
•Water,from Lake Washington is pumped periodically into the force main through Lake
Washington flush station. Lake water and the sewage is discharged from this low-
pressure force main into the Lake Washington No. 2 Lift Station, where it is then pumped
into the METRO East Side Interceptor. The original force main was installed in 1960 and
has a history of various problems and requires considerable maintenance. In 1986 the
City attempted to improve the collection system through the installation of additional
cleanouts on the low-pressure force main and the installation of plug valves on each of
the individual side sewers, which could be closed during cleaning operations. This work
was conducted under project No. S-442.
Upon completion of the additions to the force main and side sewers, the City attempted •
to clean the low-pressure force main using a sewer pig. Even though the side-sewer,plug
valves were closed,two homes were flooded out with backed-up wastewater. Since 1986
no further attempts have been made to thoroughly clean the low-pressure, force main.
Since this part of the sewer system continues to require high maintenance, the City should
continue examining alternatives, that could reduce some of the maintenance and provide
a more reliable and efficient system.
KENNYDALE SUBBASIN
•
The Kennydale Subbasin serves primarily residential communities including both single-
family and multi-family developments. The eastern portion of this subbasin is mostly
unsewered at this time. The City has received verbal indication from the King County
Health Department of random septic system failures in this area. While the extent of
these failures is not known, there is no indication of area or basin-wide problems, but
rather localized problems. This subbasin includes two lift stations: the Highgate Lift
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CHAPTER FIVE
Station and the Azalea Lane Lift Station. In addition, the Devil's Elbow Lift Station
pumps wastewater from the Honey Creek Subbasin to the Kennydale Subbasin.
This basin serves approximately 200 acres of the City of Renton, where, there is potential
for future development and hence higher flow rates. This subbasin was modelled as if
the Devil's Elbow and Azalea •Lane lift stations were on-line and were pumping
simultaneously. The subbasin connects into the METRO East side Interceptor at Lake
Washington Boulevard, south of 28th Street.
NORTH HIGHLANDS SUBBASIN
The North Highlands Subbasin serves a large area of both residential and commercial
developments. A major portion of the sanitary sewer system in the North Highlands
Subbasin was constructed during World War II. These older sewer systems are near the
end of their useful life and require increased maintenance. The Sunset Lift.Station pumps
sewage from the Honey Creek Subbasin to the North Highlands Subbasin.
The North Highlands Interceptor beginning at NE 7th Street and continuing along Sunset
Boulevard (approximately 7,200 lineal feet) currently exceeds design capacity. This is
primarily a result of receiving wastewater from the Sunset Lift Station. The City's CIP
currently has funds targeted for replacing the interceptor, which will increase the capacity
of the lower portion of this interceptor.
Since wastewater pumped from the Sunset Lift Station is a major factor contributing to
capacity problems in the North Highlands Interceptor, additional efforts should focus on
constructing the May Valley Interceptor which would provide gravity sewer service to the
Honey Creek Subbasin. However, until the May Valley Interceptor is constructed and the
Sunset Lift Station is removed from service, the current configuration provides the best
solution.
NORTH RENTON SUBBASIN
The North Renton Subbasin is located on the south end of Lake Washington between the
Cedar River and Interstate 405. This subbasin consists of commercial and heavy •
industrial land uses and includes two lift stations: the Boeing Lift Station and the Lake
Washington Beach Lift Station.
The North Highlands/North Renton Subbasin serves approximately 600 acres in the City
of Renton. Many sections of this basin were not modelled due to a lack of physical data.
Severe capacity problems exist within the interceptor along N 6th Street as a direct result
of receiving wastewater from the Sunset and Boeing Lift Station. The Boeing Lift Station
5-14
System Analysis and Conclusions
is planned to be eliminated through the construction of the Park Avenue Interceptor. This
subbasin connects into the METRO Interceptor at N 6th Street and Logan Avenue N.
4. - BLACK RIVER BASIN
The Black River Basin is a large drainage basin in the southwest part of the City and includes
the South Renton, Rolling Hills, Talbot Hill, Renton Industrial, Panther Creek, and Springbrook
Subbasins. The higher elevations in the Rolling Hills, Talbot Hill, and Panther Creek areas are
generally single-family and multi-family residential developments, while the valley floor is
generally for industry and commercial land uses. The City serves approximately 3170 acres of
this basin.
• SOUTH RENTON SUBBASIN
The South Renton Subbasin includes the commercial business district south of the Cedar
River and the residential communities located on the lower slopes of the Rolling Hills.
Currently no lift stations are located in this subbasin. Most of the sanitary sewers are in
adequate condition and have sufficient capacity for this subbasin; however, older sewers
do exist, but are not known to cause problems at this time. Some sewers will need to be
relocated as a result of construction on I-405. This will be performed by the Washington
State Department of Transportation.
ROLLING HILLS/TALBOT HILL/PANTHER CREEK/SPRINGBROOK SUBBASIN
The Rolling Hills, Talbot Hill, Panther Creek and Springbrook Subbasin serves the
residential communities in the southeast area of the City. This subbasin serves primarily
single-family and multi-family communities. The Talbot Hill Subbasin includes the
Talbot Crest Lift Station. An agreement is currently being negotiated between Soos
- Creek Water and Sewer District and the City which will define service area boundaries
and result in joint use of the Springbrook Interceptor which serves the Springbrook •
Subbasin.
The Talbot Road interceptor which serves a majority of the Panther Creek Subbasin is
undersized to service this area. This interceptor should be replaced with larger pipe.
•
RENTON INDUSTRIAL SUBBASIN
The Renton Industrial Subbasin includes the area south of Interstate 405 and west of the
East Valley Freeway. This area is also called the Orillia Industrial District. This
• subbasin includes the Lind Avenue and East Valley Lift Stations. Many areas within the
subbasin are only sparsely developed at this time. This area was originally developed for
5-15
CHAPTER FIVE
light industry and warehousing; however,in recent years the land use has changed rapidly.
Increasingly, warehouse type buildings are being converted to office parks, which places
increased demands on the existing sewer systems. Consequently, the City should
- periodically re-examine wastewater flow rates in order to better evaluate sanitary sewer
needs.
5. LAKE WASHINGTON WEST BASIN
The Lake Washington West Basin is located in the northwest part of the City. The basin is
bordered to the east by the Cedar River and to the south by Sunset Boulevard West. The City
serves approximately 710 acres within this basin which consists of primarily single-family and
light commercial land uses. This basin primarily transports wastewater to the east into the
METRO East Side Interceptor. This basin comprises two subbasins: the West Hill Subbasin and
the West Renton Subbasin. Also included in this basin is a portion of the Bryn Mawr-Lakeridge
Water and Sewer District and Skyway Water and Sewer District.
WEST HILL SUBBASIN
The West Hill Subbasin serves the residential communities on the West Hill north of
Renton Avenue South. The subbasin includes the Airport Lift Station located at the City
of Renton Airport.
This is a large subbasin serving approximately 350 acres. Potential for additional
development within the City limits in this subbasin is minimal. Some areas were not
modelled in this subbasin due to a lack of physical data. Data which is available is
suspect, due to extensive sewer reconstruction, rehabilitation, and the age of the sewers.
The sewer system which was modeled appears to have sufficient sewer capacity.
WEST RENTON SUBBASIN
The West Renton Subbasin serves residential communities west of Rainier Avenue South
and the commercial district•east of Rainier Avenue South. This subbasin includes the
Sears Lift Station and the Earlington School Lift Station.
The. West Renton Interceptor located in the West Renton Subbasin is experiencing
capacity problems along Renton Avenue S.These capacity problems are primarily a result
of undersized sanitary sewers, which are serving a large area. Wastewater flows from the
Sears and Earlington School Lift Stations are also adversely impacting this interceptor
5-16
•
•
System Analysis and Conclusions
.
The existing interceptor is approximately 3,700 lineal feet of 12-inch and 15-inch sanitary
. sewer. The City should examine the possibility of increasing the size of this interceptor
' or providing additional interceptors in this basin. Many sewers are also very old and
require replacement, such as the gravity sewers along S. 4th Street.
6. DUWAMISH ESTUARY BASIN
The Duwamish Estuary Basin is located in the western portion of the City and includes the
immediate area surrounding METRO's Renton Treatment Facility. This basin also includes a
portion of the Skyway Water and Sewer District. The City serves approximately 580 acres
within this basin which primarily consists of light industrial land uses on the valley floor and
residential developments on the hillsides. There are no sewer capacity problems which have been
identified within this basin.
D. LIFT STATIONS
This plan evaluated lift stations against the standards and guidelines for construction of sewage
lift stations that are detailed in Chapter 3 of the "Criteria for Sewage Works Design" manual
prepared by the Washington State Department of Ecology. This chapter includes design
standards and guidelines for lift station location, pump sizing and selection, wet well sizing
criteria, alarm system, emergency response criteria, force main criteria, lighting and ventilation.
These standards and guidelines have been established to ensure protection of the environment and
property through design and operation of reliable sewage lift stations.
The City of Renton has 23 sewage lift stations, which are shown and inventoried in FIGURE
3. Each station was inspected for safety and accessibility, and operation and maintenance
manuals for each were reviewed at the City Shops. The results of these inspections are presented
in the following paragraphs, and the lift station inventory summaries are presented in TABLE
V-1. Detailed Lift Station Data Sheets are provided in Appendix A.
With few exceptions, these lift stations have no major inadequacies in terms of safety or
reliability. Most of the lift stations have tone-generated telemetry to the City Shops which
activate alarms for high and low wet-well levels,power failure, signal loss and, in some stations,
intrusion alarms.
LIFT STATION NO. 1 - AIRPORT •
The Airport Lift Station is located on the east side of West Perimeter Road within the
airport property. This facility is a fiberglass, wet well mounted, duplex lift station with
a duplex vacuum priming system. This facility serves the airport facility along West
5-17
•
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TABLE V-1: LIFT STATION INVENTORY SUMMARY
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1 AIRPORT West Perimeter Road 2 4 7.5 3 1750 100 54 WW MTD No Yes 230/460
2 AZALEA LANE 2310 Aberdeen Avenue NE 2 6 7.5 3 1766 150 44 WW MTD Yes Yes 208
3 BAXTER 5015 Lake Washington Blvd N 2 8 3 3 865 400 23 WW MTD Yes Yes 230/460
Baxter Pole Yard .
4 BOEING Park Ave N and N 8th Street 2 6 7.5 3 860 400 30 WW/DW No Yes 230/460
5 COTTONWOOD 2003 Maple Valley Highway 2 6 5 3 1150 300 23 WW MTD No Yes 230/460
West of Riviera Apartments
6 DENNYS 4750 Lake Washington Blvd N 2 4 5 3 1735 100 35 WW MTD Yes Yes 230/460
7 DEVIL'S ELBOW NE 27th St and 120th Place SW 2 8 40 3 1760 400 157 WW MID Yes 230/460
8 EARLINGTON SCHOOL 8055 S Langston Road 2 6 5 3 860 150 30 WW/DW No Yes 230/460
Y1 9 EAST VALLEY 3400 East Valley Road 2 8 5 3 1150 350 22 WW/DW No Yes 230/460
00 10 FALCON RIDGE 2456 SE 8th Street 2 4 15 3 1800 100 101 WW MTD Yes Yes 230/460
11 HIGHGATE 1824 NE 20th Street 2 4 3 1 1170 • 100 35 WW MTD Yes Yes 230
12 HONEY CREEK 3501 NE 17th Place 2 4 7.5 1 1750 100 58 WW MTD No Yes 230
13 HONEYDEW Union Ave NE near NE 7th St 2 4 2 3 1160 100 15 SUBMERS. No Yes 230
14 LAKE WASHINGTON BEACH 1101 Lake Washington Blvd N 2 4 3 3 900 . 125 25 WW/DW ' No Yes 230/460
Coulon Park Parking Lot -
15 LAKE WASHINGTON FLUSH 2727 Mountain View Avenue S 1 8 1.5 3 1150 400 6.5 SUBMERS. No Yes 230
North End of Coulon Park
16 LAKE WASHINGTON NO.2 3901 Lake Washington Blvd N 2 6 7.5 3 1150 400 31 WW MTD Yes Yes 230/460
17 LIND AVE. 1801 Lind Avenue S 3 8 5 3 865 780 13 WW/DW Yes Yes 230/460
18 MISTY COVE 5025 Ripley Lane N ' 2 4 2 3 860 75 10 WW MTD No Yes 230/460
19 SEARS 321 Rainier Avenue S 2 6 5 3 1160 200 30 WW MTD No Yes 230/460
20 SUMMERWIND NE 23rd Street 2 6 25 3 1800 375 133 WW MTD Yes 230/460
21 SUNSET NE Sunset Blvd&Union Ave NE 2 6 15 3 1755 • 500 70 WW/DW No Yes 230/460
22 TALBOT CREST " 2515 Talbot Crest Drive S 2 4 5 3 1750 50 96.6 PE No Yes 230/460
23 UNION 600 NE 5th St and Union Ave NE 2 4 2 3 1750 . 100 24 WW MTD Yes Yes 230/460
System Analysis and Conclusions
•
Perimeter Road. The lift station is in good condition and has proven to be reliable. An
emergency power connection should be installed at this facility.
- LIFT STATION NO. 2 - AZALEA LANE
The Azalea Lane Lift Station is located on the east side of Aberdeen Ave NE, south of
NE 24th St. This facility is a fiberglass, wet well mounted, duplex lift station with a
duplex vacuum priming system and serves the communities east of the lift station. The
lift station is in good condition and has proven to be reliable-although it experiences
periodic flooding. An overflow pipe connects the storm sewer system to the lift station
wet well. As a result, during peak storm events the lift station is required to pump both
wastewater and stormwater. The City will examine stormwater problems in this area as
part of the Comprehensive Storm and Surface Water Management Plan. One alternative
being considered is to construct a stormwater interceptor to serve this area. This lift
station will be taken off-line and removed when wastewater from this area is diverted by
gravity through the future East Kennydale Interceptor.
LIFT STATION NO. 3 - BAXTER
The Baxter Lift Station is located in the J.H. Baxter and Co.. pole yard near NE 44th
Street adjacent -to the railroad tracks. This facility is a recessed, wet well mounted,
duplex lift station with a duplex vacuum priming system. The station serves the mill,
owned by the J.H. Baxter and Company, and the community along the lake north of NE
44th Street. The lift station is in good condition and has proven to be reliable. There is
a creosote smell in the lift station originating from wastewater generated at the mill.
Access to this facility is through the pole yard and is made difficult during rainy periods.
LIFT STATION NO. 4 - BOEING
The Boeing Lift Station is located on the northeast corner of N. 8th Street and Park
Avenue N. This facility is a duplex, wet well/dry well lift station and serves the Boeing
r- facilities adjacent the lift station. The lift station is in generally good condition but has
poor access and requires a hoist to remove the manhole cover for access. This lift station
will be eliminated by constructing a gravity sewer north along Park Avenue N. to
METRO's East Side Interceptor in conjunction with the reconstruction of this street.
LIFT STATION NO. 5 - COTTONWOOD
•
The Cottonwood Lift Station is located west of the Riviera Apartments, south of the
Maple Valley Highway. This facility is a recessed, wet well mounted, duplex lift station.
This facility serves the area between the Maple Valley Highway and the Cedar River, east
of the Stoneway concrete facilities. The lift station is dangerous and needs to be
replaced. The coatings of the mechanical equipment and dry-well walls are in poor
•
5-19
CHAPTER FIVE
condition. The wet well has an overflow bypass to the Cedar River. However, during
high river stages, river water can flow into the wet well. As a result, a valve has been
installed on the bypass and is manually closed by operation and maintenance personnel
- during periods of expected, high river levels.
LIFT STATION NO. 6 - DENNY'S
The Denny's Lift Station is located on the east side of Lake Washington Boulevard next
to the Denny's restaurant. This facility is a fiberglass, wet well mounted, duplex lift
station with a duplex vacuum priming system. This facility serves the Denny's restaurant,
is in good condition and has proven to be reliable; however, mechanical equipment needs
to be repainted. The lift station does experience some problems due to grease discharges
from the restaurant and flooding during peak storm events.
LIFT STATION NO. 7 - DEVIL'S ELBOW
The Devil's Elbow Lift Station is located at the unimproved intersection of NE 27th
Street and 120th Place SE adjacent to Honey Creek. This facility is a wet well mounted,
duplex lift station with a duplex vacuum priming system which is housed in a fiberglass
building. The lift station is in fair condition, but is susceptible to vandalism, even though
the site has a chain-link fence because of its remote location. Pumps have had problems
holding their prime and the mechanical equipment needs tobe repainted. A portion of
the force main needs to be replaced due to soil creep along NE 27th Street. This lift
station will be taken off-line and removed when the Honey Creek Interceptor and May '
Valley Interceptor are completed.
The Devil's Elbow lift station was designed in conjunction with the Honey Creek
Interceptor in '1986. According to the Engineering Report, the lift station was intended
to be an interim facility until the May Valley Interceptor was constructed. The Honey
Creek Interceptor was designed to meet saturation flow conditions from the Honey Creek
Basin. However, according to the engineering report, the Devil's Elbows Lift Station was
designed to meet existing conditions and not to provide a long-term solution for this
subbasin.
Each pump within the Devil's Elbow lift station is designed for 450 gallons per minute.
The Devil's Elbow Lift Station pumps into the Kennydale Subbasin near the intersection
of Edmonds Avenue N.E. and N.E. 27th Street. It was determined that wastewater
discharged from this lift station would adversely impact the gravity sewers in the
Kennydale Subbasin. For this reason; all sewers that were adversely impacted were up-
sized in order to handle this additional 450 gallons per minute. In addition a lock-out was
5-20
System Analysis and Conclusions
put on the Devil's Elbow Lift Station so that both lift station pumps would not pump
simultaneously.
- In recent years, the configuration within the Honey Creek Subbasin has become
increasingly problematic. The Devil's Elbow Lift Station was designed to alleviate
capacity problems which existed in 1986; increased development within this subbasin has
resulted in higher peak wastewater flow rates, causing additional stress to both the Sunset
and Devil's Elbow Lift Stations. During peak storm events, wastewater at the Devil's
Elbow lift station has overflowed into Honey Creek.
The pump lock out at Devil's Elbow Lift Station is an additional problem. If a pump
within this facility was signaled to operate but could not because of a malfunction, the
pump lock-out would prevent the second pump from taking over. The City maintenance
crews can only find out about this problem after the high level alarm at the lift station has
been activated.
Before further development occurs in this subbasin, a study should be undertaken to
determine alternative to improve system capacity within all of the facilities affected by
this deficiency.
LIFT STATION NO. 8 - EARLINGTON SCHOOL
The Earlington School Lift Station is located on the southwest side of S. Langston Road
between S. 132nd Street and S. 134th Street. This facility is a duplex wet well/dry well
lift station with an 8-inch overflow bypass. This facility serves the Earlington Elementary
School which is located outside the City Limits. The lift station is in good condition but
has poor access and is difficult to keep clean due to its location on the gravel shoulder.
This lift station will be taken off-line and removed when wastewater from this area is
diverted by gravity through the future Renton Avenue Interceptor.
LIFT STATION NO. 9 - EAST VALLEY
•
The East Valley Lift Station is located on the northwest corner of the intersection of SW
34th Street.and the East Valley Road. This facility is a duplex wet well/dry well
configuration with a single vacuum priming system. This facility serves the commercial
areas north and west of the lift station. The lift station is in generally poor condition.
The above-grade electrical enclosures have experienced vandalism, even though the site
is enclosed in a chain-link fence. Lift station walls and mechanical equipment need to
•be repainted. The single vacuum priming system does not allow complete redundancy;
this means that the lift station will not operate if there is a failure of the vacuum priming
5-21
•
i
CHAPTER FIVE
system. Since this lift station is considered to be permanent, it is recommended that this
lift station be rehabilitated to make it more reliable.
•
- LIFT STATION NO. 10 - FALCON RIDGE •
•
The Falcon Ridge Lift Station is located at the east end of SE 8th Street in the plat of
Falcon Ridge. This facility is a fiberglass enclosed, wet well mounted, duplex lift station
with a duplex vacuum priming system, which is in good condition and has proven to be
reliable. This lift station will be taken off-line and removed after the development of the
Parker property and completion of the Falcon Ridge Interceptor. Wastewater will then
flow by gravity directly to METRO's Cedar River Interceptor.
LIFT STATION NO. 11 - HIGHGATE
The Highgate Lift Station is located on the south side of NE 20th Street between Jones
Avenue NE and Aberdeen Avenue NE. This facility is a fiberglass enclosed, wet well
mounted, duplex lift station with a duplex. vacuum priming system. It serves the
communities along NE 20th Street. This lift station will be taken off-line and removed
when wastewater from this area is diverted by gravity through the future extension of
West Kennydale Interceptor.
LIFT STATION NO. 12 - HONEY CREEK
The Honey Creek Lift Station is located on the south side of NE 17th Place near the
eastern cul-de-sac. This facility is a recessed wet well mounted duplex lift station with
centrifugal pumps. This facility can serve the plat of Honey Creek Park. It is in poor
condition and has been placed on standby since the construction of the Honey Creek
Interceptor. Pump No. 2 is still operational. However, Pump No.1i is not operational.
The lift station could be placed back into operation, if required.
LIFT STATION NO. 13 - HONEYDEW
The Honeydew Lift Station is located in the middle of Union Avenue NE just north of
NE 7th Street. This facility utilizes two, non-clogging, submersible pumps. This facility
serves the communities north of the Kiwanis Park and the Honey Dew School along
Union Avenue NE. The lift station is in fair condition. However, because it is located
in the middle of Union Avenue, traffic control must be set up to access the lift station.
The lift station will be taken off-line and removed when the wastewater from this area
is directed by gravity through future developments to the east. These developments, i.e.
The Orchards, should be required to plan for the diversion of wastewater from this lift
•
5-22
System Analysis and Conclusions
station through the property. Honeydew Lift station cannot be taken off-line until the
completion of the East Renton Interceptor.
- LIFT STATION NO. 14 - LAKE WASHINGTON BEACH
The Lake Washington Beach Lift Station is located in the parking lot at Coulon Beach
Park. This facility is a duplex wet well/dry well lift station which serves the restroom
facilities at the park. The lift station is in good condition. The pumps have become
blocked regularly as a result of hand towels being flushed down the toilets. To eliminate
this problem the Parks Department has installed hand dryers in the restrooms at the park.
LIFT STATION NO. 15 - LAKE WASHINGTON FLUSH
The Lake Washington Flush Lift Station is located at the south end of Mountain View
Avenue North. The facility is a submersible, non-clogging pump for pumping lake water
into the gravity sewer along the Kennydale lakefront for flushing purposes. The low-
pressure sewer then discharges into Lake Washington No. 2 Lift Station. The lift station
is in fair condition and is reliable. This section of sanitary sewer should be studied
separately and alternatives developed,which may eliminate the need for this flush station.
LIFT STATION NO. 16 - LAKE WASHINGTON NO. 2
The Lake Washington No. 2 Lift Station is located at the north end of the Kennydale
Beach Park Road. This facility is a fiberglass enclosed, wet well mounted, duplex lift
station with a duplex vacuum priming system. This facility serves lakefront properties
west of the railroad tracks in the Kennydale area. The lift station is.in poor condition.
The check valve and shut-off valve are located in the wet well and are experiencing
severe corrosion. The ladder in the wet well is dangerous, because the supports have
corroded to the point of structural failure. This lift station should be replaced.
LIFT STATION NO. 17 - LIND AVENUE
The Lind Avenue Lift Station is located on the west side of Lind Avenue SW near the
intersection with SW 19th Street. This facility is a triplex, wet well/dry well lift station
which serves the commercial and industrial areas in the vicinity of the lift station. The
lift station was upgraded to a triplex station in 1983 and is in good condition. The above-
grade, motor-control center should be enclosed in a vandal-proof enclosure for security
reasons.
5-23
i '
CHAPTER FIVE
•
LIFT STATION NO. 18 - MISTY COVE
The Misty Cove Lift Station is located on the west side of Ripley Lane North in the plat
- of Misty Cove. This facility is a recessed, wet well mounted, duplex lift station with a
duplex vacuum priming system. This facility serves the lakefront properties west of the
railroad tracks in the May Creek area. The lift station is in good condition. A hoist is
required to remove the manhole cover for access into the lift station. The Misty Cove
Lift Station pumps to the Baxter Lift Station which has a smaller wet well. For this
reason a lockout has been placed on the Misty Cove Lift Station, which is engaged when
the high level alarm at the Baxter Lift Station is activated.
LIFT STATION NO. 19 - SEARS
The Sears Lift Station is located in the parking lot behind Diamond Lil's Restaurant in
the Renton Center. This facility is a recessed,wet well mounted,duplex lift station which
serves the commercial areas in the Renton Center. The lift station is in fair condition;
however, the electrical wiring is in poor condition. The bubbler tube is located in the
access port into the lift station and is easily damaged. Access to the lift station is
congested during business hours. This lift station should be either replaced or
rehabilitated.
LIFT STATION NO. 20 - SUMMER WIND
The Summer Wind Lift Station is located in a fenced, storm-drainage retention area
located off the cul-de-sac on NE 23rd Street. This facility is a fiberglass enclosed, wet
well mounted, duplex lift station with a duplex vacuum priming system. This facility
serves the east half of the plat of Summer Wind. The lift station is in good condition and
has proven to be reliable. The lift station may be eliminated in the future after
construction of the May Valley Interceptor.
LIFT STATION NO. 21 - SUNSET
The Sunset Lift Station is located on the southeast corner of the intersection of NE Sunset
Boulevard and Union Avenue NE. The facility is a duplex wet well/dry well lift station
with an overflow wet well and an overflow bypass to the Honey Creek-Interceptor. This
facility serves the Honey Creek Basin east of Union Avenue NE. The lift station is in
fair condition but does experience a grease buildup problem in the overflow wet-well
which requires periodic cleaning. Further, the lift station is undersized for the area
served. During storms, both pumps are required to run together. Excess wastewater is
diverted to the Honey Creek Interceptor. The integrity of the force main, which was
5-24
System Analysis and Conclusions
originally installed in 1963, is questionable. The lift station will be taken off-line and
removed when the Honey Creek Interceptor and May Valley Interceptor are completed.
LIFT STATION NO. 22 - TALBOT CREST •
The Talbot Crest Lift Station is located on the west side of Talbot Crest Drive. This
facility is a dual, pneumatic ejector, lift station with an 8-inch overflow bypass. This
facility serves the plat of Talbot Crest The lift station is in good condition and has
proven to be reliable. The lift station has a tendency to collect condensation in the air.
chamber which must be removed periodically. The lift station can be eliminated by.
constructing a gravity sewer west across SR 167 or possibly south to the Talbot Road
Interceptor.
•
LIFT STATION NO. 23 - UNION 600
The Union 600 Lift Station is located on the northeast corner of the intersection of Union
Avenue NE and NE 5th Street. This facility is a fiberglass enclosed, wet well mounted,
duplex lift station with a duplex vacuum priming system. This facility serves the
apartment complexes along NE 5th Street and pumps to the Maplewood Subbasin. The
lift station is in good condition and has proven to be reliable. The lift station will be
taken off-line and removed when the gravity sewer is completed to NE 4th Street.
PRIVATE LIFT STATIONS
There are also privately owned and maintained lift stations within the City's service area, which
are:
•
Lift Station Location Owner
• Pelly Avenue North near North 7th Boeing Company
• Rainier Avenue near NW 6th Airport Utility
• 148th Avenue SE opposite North 10th (Apollo School) King County Water
District No. 90
• East of Kennydale Elementary Private Development
• Puget Drive near Rolling Hills. Private Development
__ • Tukwila Lift Station near METRO plant City of Tukwila
New private lift stations must meet city standards and be required to have a maintenance
agreement with the City. This agreement would allow the city maintenance crews to service
these private lift stations, at the owner's expense, when neglect has resulted in a health hazard.
5-25
CHAPTER FIVE
E. TELEMETRY AND CONTROL SYSTEM
Accurate information that details the flow rates in the collection system and trunk lines is
paramount to successful system operation and planning. Most of the operation issues, and all.of
the planning elements, are driven by and based on the flow rates in the pipelines. Without
accurate flow rate information, flow rate assumptions must be made based on population
estimates and industry standard assumptions about per capita sewage contribution, and
infiltration and inflow. The accuracy of an analysis based on these assumptions is no better than
the accuracy of the assumptions. To illustrate the importance of accurate flow rate, the following
planning and design issues that are directly based on flow rates was compiled:
• The sizes of the pumps in each lift station are based on maximum flow rates in the
influent sewer mains.
• Collection system, trunk mains, and force mains are based on maximum flow rates from
the-contributing areas.
• Lift station wet well volumes are based on expected influent flow rates and projected
emergency reaction times.
• Pump run set points are based on providing maximum pump cycle times without allowing
the stored sewage to become septic. These are based on influent and pumping flow rates.
• The priority and schedule within which facilities are replaced is based on the flow rate
capacity of the facility compared with the actual flow rate in the system. Facilities which ,
are operating at or above capacity are replaced first, followed by facilities that are closest
to maximum capacity.
• Actual system flow rates can be compared with the per capita contribution and pipe
material and age to develop relationships between flow rate and population density.
Without these relationships, large safety factors must be added to industry standard ratios
for per capita flow rates. These, unnecessarily, increase costs or limit development.
Without these system-specific ratios, it is also impossible to accurately predict overloaded
facilities before the overload shows as surcharged manholes or overflowing wet wells.
Renton's existing sanitary sewer system operates without accurate flow rate information and
without adequate maintenance management information. The flow rate data used to develop and
calibrate the system-wide computer model was based on industry standards for per-capita'flow
and land use designations. Although we believe these values are conservative, it is impossible
to identify to what extent they are above actual system flow rates. Undoubtedly, they are more
conservative in some areas than in others. This lack of real and accurate data has diminished the
5-26
System Analysis and Conclusions
ability to identify all potential problem areas, and to develop the most efficient and most cost
effective capital improvement program.
•
To date, the operating staff has reacted to system emergencies as they occur, rather than
preventing emergencies through an organized, adequate maintenance schedule. To the credit of
{ the maintenance staff, they have performed well with the information available. It would be
impossible to improve the maintenance program without additional maintenance management and
flow rate information. A properly designed and maintained telemetry and control system includes
the following features:
Alarm Abnormal Events
Provide Engineering Information
Provide Maintenance Information
React to System Emergencies
Reduce Operating Costs
Provide a Convenient Storage Media
Schedule Maintenance Tasks •
Improve Safety
Each of these features is discussed in detail below.
ALARM ABNORMAL EVENTS
Although most sanitary sewer telemetry systems include some alarm information, the
following alarms are required for the system to provide the maintenance information
necessary to optimize system operation.
• High wet well level
Low wet well level
Pump fail (each pump)
Low pump flow rate
Power fail
Fire alarm
Telemetry fail
• Hazardous gas detection
Water in the dry well
Personnel panic alarm
Intrusion alarm
•
5-27
CHAPTER FIVE
EMERGENCY INFORMATION
Emergency information necessary from the telemetry system must include the influent
flow rate to each lift station. This is a calculated quantity based on the length of time it
takes to fill a known volume in the wet well. The influent flow rate should be reported
as a maximum, minimum, and average value. Pump flow rate is provided by installing
an electro-magnetic flowmeter on the discharge.side of the pumps. Although doppler
ultra-sonic meters are commonly used for this purpose, their reliability and calibration are
not capable of providing the precise information necessary. Since each pump discharges
through the same flowmeter on alternating cycles, the flow rate difference (difference in
pump output) can be used to alarm a pump that is partially plugged or that has worn
significantly. The alarm features and flow rate capability of the telemetry system can also
be used to identify facilities with a higher than average failure history and to calculate
and optimize pump start and stop set points. Pump set points should be calculated to
maximize the interval between pump starts, while still maintaining adequate storage
reserves in the wet well. These levels should be allowed to automatically change
throughout the day to optimize pump run times. In addition, the telemetry system should
track and store flow rate trends to be used for engineering and planning purposes.
MAINTENANCE INFORMATION
The telemetry system must automatically track and display pump efficiency at each lift
station. This is accomplished by measuring flow rate and electrical current and
calculating the efficiency of each pump.cycle.
The maintenance staff uses pump efficiency to identify pumps that are near the end of
their service life and need to be replaced, or pumps that are plugged or partly plugged and
need service attention. In addition,the system should continuously monitor,calculate and
display the high level response time at each wet well in the system. The response time
continuously varies depending on the influent rate and the volume above the alarm level
in the wet well, and it is useful in determining the sequence of reactions to multiple high
level alarms. During a multiple alarm episode, the staff can respond to the wet well with
the shortest, high level response time. The failure history of each lift station should be
monitored to identify recurring problems or chronic failure sites. This information is then
used to identify frequency of maintenance per site and when facility replacement is due.
REACT TO SYSTEM EMERGENCIES
The telemetry system should be configured to automatically react to some system
emergencies. For example, lift stations in series should be locked out if a receiving lift
station has a high level alarm. If an overflow is unavoidable, the station that causes the
5-28
r
t
•
CHAPTER FIVE
SCHEDULE MAINTENANCE TASKS
Any telemetry system should be compatible with the City's existing maintenance
management system, and the database should be configured to provide real-time operating
-- information to the maintenance system. Pump maintenance should be based on the total
running time of each pump and the number of starts of each pump. This information is
available through the telemetry system. Each lift station and each pump combination has
its own characteristic maintenance requirements. Some pumps may require maintenance
every 1,000 hours others every 15,000, hours depending on the service and duty
conditions in each facility. Real time operating information can provide the maintenance
system with the proper data to develop the necessary maintenance requirements at each
site. This procedure results in the most efficient use of the maintenance staff's time and
reduces overall operating costs. In addition, it eliminates the most frequent sources of
equipment failures.
IMPROVE SITE SAFETY •
The telemetry system should continuously monitor for hazardous gases in the dry well
and alert operating personnel of unsafe conditions. A personnel panic alarm at each site
should be used for added operator safety. A central reporting of the occupied lift stations
allows the maintenance managers to locate and track the maintenance crews for added
safety and reliability.
1. EXISTING TELEMETRY SYSTEM
The City currentlyowns and operates an analog, signal-based alarm reporting system,
manufactured by Stead & Baggerly of Bellevue, Washington, which monitors each lift station.
The system includes a master console that is located in the City Shops, and a remote telemetry
transmitter located in each lift station.
The master console is in continuous contact with most lift stations via dedicated telephone wires
and circuits. Telemetry tone transmitters in each lift station report the operating status of the lift
station pumps and alarm events. The following data is telemetered and displayed at the Master
Console:
Component Status •
Pump 1 Run
Pump 2 Run
Wet Well High Level Alarm
Station Power Fail
5-30
System Analysis and.Conclusions
Alarm conditions are transmitted to on-call maintenance personnel using automatic telephone
dialer.
Although this system has operated reliably, it does not generate the information necessary to
optimize operation of the lift station facilities and the collection system. The leased telephones
are expensive and are not regularly maintained by the telephone company. The existing system
is not easy to troubleshoot or repair, and must be maintained by an independent contractor. The
current system does not measure or record flow rate, includes no redundancy, has no data
logging, no maintenance management information, and no control capability.
2. PROPOSED SYSTEM IMPROVEMENTS
The Renton Sanitary Sewer System needs a new comprehensive Telemetry and Data Logging
System. The system should be used by the engineering staff to verify or modify the flow rate
assumptions made in this plan and to identify additional improvements necessary. The
maintenance staff will use the system to reduce costs, improve reliability and increase safety.
The new system must be digital, signal-based, using a high security, binary coded decimal for
Telemetry transmission. The system should run on IBM compatible computers and use smart
remote telemetry units at the lift stations and collection system monitoring points. Telemetry
should be a combination of leased telephone line and radio transmission, with the radios being
the preferred transmission media. Because the lift stations are often located at the bottom of '
drainage basins, radios may not work at all sites. These sites should use leased telephone lines
for data transmission instead of radios.
Control of the facilities should be accomplished in a distributed format, wherein the control.
computer provides pump run set points that are based on optimal,pump operating conditions, and
also locks out various lift stations during high-level alarms from various downstream lift stations.
All other control is initiated from the Remote Telemetry Unit, including pump start/stop from the
level transducer, back-up pump control from the float switches and station alarms.
The system should use strain-gauge, level transducers that are suspended in the wet well for
primary pump control, and use float switches for back-up pump control in the event of transducer
failure. Pump discharge flow rates should be measured using an electro-magnetic flowmeter.
Influent flow rates do not need to be measured directly, but rather can be mathematically
synthesized by measuring the time it takes to fill a known volume of the wet well.
The engineering and system status information that is presented at the City Shops should also be
displayed in real time format at City Hall usinga networked data logger computer.. This will
allow the engineering and planning staff access to system information without disrupting the
maintenance staff.
5-31
CHAPTER FIVE
The computer and data storage system should be compatible with the existing water data logger
to provide redundant data storage and to provide hot standby fail over controllers. The system
should also be integrated with the existing maintenance management system to provide real time
operating data and failure history data to the maintenance system.
Each remote telemetry unit,located in each lift station, should include intelligent telephone dialer
alarm systems, so that critical alarms can be relayed to on-duty maintenance personnel, even
during a telemetry system failure.
Telemetry and control should be provided at each lift station in the system, and at strategically
located, collection system flow-metering points. A pre-design report should be developed in
conjunction with the telemetry system replacement design to identify the number and location
of flow metering stations.
F. WASTEWATER QUALITY
The quality of wastewater transported in the Renton sanitary sewer system varies considerably
depending on the wastewater source, detention time within the sanitary sewer system and the
volume of infiltration and inflow. This chapter discusses several aspects of wastewater quality
and will recommend measures to control or eliminate wastewater quality problems.
1. DOMESTIC WASTEWATER
The quality of domestic wastewater varies and is a direct result of the type of water used within
the home. Some domestic sewage can be considered stronger than others. One household
appliance, the garbage disposal, can greatly impact the quality of wastewater. . Most new home
construction incorporates garbage disposal in its design. Use of these garbage disposal increases
both suspended solids and the biochemical oxygen demand (BOD), two common results tested
for when measuring contaminant concentrations. A second major determinant of quality of
wastewater is the volume of infiltration and inflow into the sewer system. High rates of
infiltration and inflow will tend to dilute the contaminant concentration of the wastewater.
2. INDUSTRIAL WASTE
Industrial wastes deserve special attention because they can exhibit a widevariety of chemical
constituents. The total volume of industrial waste produced within the City of Renton is small
compared with the volume of domestic wastewater. However, an industrial or commercial
development can have a considerable impact on the sanitary sewer collection system immediately
downstream of the facility. Industrial waste can contain high concentrations of chemicals which
can make the waste highly corrosive or toxic. A list of the industries located within the City of
Renton is provided in TABLE V-2.
5-32
•
System Analysis and Conclusions
If discharge of an industrial waste to the sanitary sewer system creates problems, then
pretreatment of the industrial waste should be considered. Several federal and state regulations
govern the pretreatment of industrial waste.
Several industries within the City have obtained National Pollution Discharge Elimination
Systems(NPDES) permits as noted in TABLE V-2. The City should assume that those who
require permits have them and should rely on the Department of Ecology to fulfill its monitoring
responsibilities. According to Department of Ecology records, no violations of NPDES permits _.
involving sanitary sewer discharges have been reported recently.
TABLE V-2: COMMERCIAL AND INDUSTRIAL WASTEWATER PRODUCERS
INDUSTRIES ADDRESS PERMITS WASTES
Boeing Airplane Company N. 8th and Logan N. NPDES Chemicals
WA0002992
Dotz Chemical Products 113 S. Tillicum Detergents
•
Fiorillo Northwest 100 Blaine Ave.N.E. Chemicals
Acme Processing, Inc. 600 S.W. 7th Street NPDES High BOD
WA0023116 Solids
J.H. Baxter and Company 5015 Jake Wash. Blvd.N. Chemicals
Solids
Pacific AGRO Corporation 903 Houser Way N. Chemicals
Service Linen Supply 903 S.4th Street Detergents
High Temp.
Valley General Hospital 400 S.43rd Street Medical Wastes
•
5-33
CHAPTER FIVE
•
3. WASTEWATER QUALITY PROBLEMS
A major problem associated with wastewater quality is the generation of hydrogen sulfide that
occurs during wastewater transport from its source to the point of treatment. The hydrogen
sulfide found in wastewater results from the bacterial reduction of the sulfate ions that are
present. Hydrogen sulfide poses two serious problems: it is highly corrosive and has an
obnoxious odor. The gas is toxic to humans and has been known to cause death to sewer
maintenance workers. The production of hydrogen sulfide is directly related to the biochemical
oxygen demand (BOD) of the wastewater. Wastewater, exhibiting a high BOD, will tend to .
generate more hydrogen sulfide than wastewater exhibiting a lower BOD; therefore, excessive
infiltration and inflow will tend to reduce the production of hydrogen sulfide in the wastewater.
1 Hydrogen sulfide is very corrosive to both sewers and pumping facilities. Hydrogen sulfide
released from the wastewater will tend to dissolve on condensation within the crown of a sanitary
sewer. The hydrogen sulfide retained in the condensation is converted to sulfuric acid by aerobic
bacteria. This sulfuric acid will react with the cement bonding material within concrete pipes,
or iron within steel pipes, and can corrode a pipe to the point of structural failure. Sanitary
sewer pipes are most susceptible to this type of corrosion in their crowns because that is where
most condensation occurs.
Effects of hydrogen sulfide can be controlled by aeration, periodic cleaning, and use of
noncorrosive pipe materials. If excessive hydrogen sulfide production is evident at a lift station,
aeration of the wet well should be considered to reduce the hydrogen sulfide in the wastewater
and reduce the effects of anaerobic bacteria which produce the hydrogen sulfide. Periodic
cleaning of the sanitary sewers will also remove the biological slime that forms onthe pipe walls
and produces the hydrogen sulfide. The most effective method of mitigating corrosion by
hydrogen sulfideis through the use of noncorrosive pipe materials such as, polyvinyl chloride
(PVC) or high density polyethylene (HDPE). Existing pipes experiencing severe corrosion can
be rehabilitated through the use of various slip form liners or fiberglass resin liners.
In order to control the generation of hydrogen sulfide, the City's maintenance crews routinely
flush and clean sewer pipes with inadequate slopes. In addition, all pipes are cleaned before
video inspection is performed. Both of these tasks reduce biological growth on the walls of the
sewer pipes and reduce the hydrogen sulfide generation potential.
5-34
CHAPTER VI
SYSTEM IMPROVEMENTS
•
CHAPTER VI
CONCLUSIONS AND IMPROVEMENTS
A. INTRODUCTION
This chapter presents the proposed improvements to the Renton System that are necessary to
correct existing deficiencies and accommodate growth. The costs of the improvements and a
schedule for implementing them is also included.
This Capital Improvements Program is designed, along with the entire comprehensive plan, to
be used as a guideline in preparing the capital improvements project list during each yearly
budget process. This plan is deliberately intended to be flexible by allowing incorporation of
necessary changes that might arise. Many of the proposed improvements are considered to be
preventive in nature, i.e., the improvement is intended to happen before a specific facility has
failed, a far more desirable process than trying to replace facilities after they fail. Since it is
impossible to estimate when a facility will fail, the process of identifying those facilities which
are at risk and planning corrective measures must continue.
B. CIP RANKINGS
The complexity of the City's wastewater utility system requires a method that systematically
determines which improvements should be undertaken sooner than others. To assign rankings
to the planned improvements, each one was analyzed according to these general categories:
Substandard Facility, System Efficiency, Environmental Protection. Each category was
further divided into four or more kinds of improvements or standards. Each of these
subcategories was assigned a number of points, with the rule that no one improvement could be
given more than eight points in any of the three categories. For each subcategory, each proposed
project was given one point if it provided the benefit described and two points if it provided a
solution to an acute problem. The higher the number of points an improvement received, the
greater its benefit, or the greater its ability to meet certain standards or policies. This systematic
ranking will help direct resources and activities to the appropriate projects.
1. SUBSTANDARD FACILITY
A facility qualifies as substandard if it is unreliable, is structurally deteriorating or has
hydraulic capacity problems. A project received points if it resulted in the following
improvements to a substandard facility:
POINTS: 1-2 Reduces or eliminates hydraulic capacity problems:
1-2 Replaces a deteriorating facility or corrects a structural problem
• 6-1
•
CHAPTER SIX
1-2 Improves system reliability (i.e., prevents discharge of raw sewage
to any waters, or reduces the potential backup of raw sewage into
basements, streets, or other properties) -
1-2 Corrects occupation hazard (i.e., reduce dangers to.maintenance
workers)
Maximum Number of Points: 8
ii
2. SYSTEM EFFICIENCY
A project can improve the efficiency of the system if it results in a reduction of operation
and maintenance costs. Examples of such projects include wastewater flow rate modeling
and elimination of lift stations. A project received points for system efficiency if it met
any of the following conditions:
POINTS: 1-2 Involves improving lift station operation or efficiency
1-2 . Involves the elimination of a lift station
1-2 Reduces infiltration and inflow
1-2 Improves understanding and planning of sewer system
Maximum Number of Points: 8
3. ENVIRONMENTAL PROTECTION
An improvement helps protect the environment if it reduces damage to it or reduces the
threat to the public health. Examples of deficiencies that such projects improve include:
failing septic tanks or sewage overflows into lakes or streams. An improvement received
points for environmental protection if it met any of the following conditions:
POINTS: 1-2 Eliminates septic tanks
1-2 Improves protection of the public health and.safety
1-2 Improves protection of the environment (i.e., land, wetlands,
streams, groundwater.)
2 Helps protect Zone 1 of Aquifer Protection Area
1 Helps protect Zone 2 of Aquifer Protection Area
Maximum Number of Points: 8
The results of the systematic ranking are presented in TABLE VI-1. After completion
of the ranking analysis, the projects were sorted and statistically divided into quartiles
(fourths). The first quartile (Quartile I) were those projects with rankings above the 75th
percentile. The second quartile (Quartile II) were those projects with rankings between
the 50th and the 75th percentiles. The third quartile (Quartile III) were those projects '
6-2
Conclusions and Improvements
TABLE VI-1: RANKING SUMMARY OF PROPOSED IMPROVEMENTS
PROJECT PROPOSED CAPITAL IMPROVEMENTS Substandard System Environmental Total QUARTILE
NUMBER Facilities Efficiency Protection Ranking
MAY CREEK BASIN]
1.1 Devil's Elbow Lift Station Rehabilitation 4 1 5 10 I
1.2 Devil's Elbow Force Main Repair 4 1 5 10 I
1.3 May Valley Interceptor,Section 2 6 2 6 14 I
1.4 Honey Creek Interceptor,Phase N 6 2 6 14 I
13 Sierra Heights Sewer System Construction 2 1 7 10 I
1.6 Sunset Lift Station Elimination `. 5 1 4 10 I
1.7 Devil's Elbow Lift Station Elimination 4 1 4 9 II
1.8 May Valley Interceptor,Section 3 2 1 3 6 III
1.9 Summer Wind Lift Station Elimination 2 1 3 6 III
1.10 Misty Cove and Baxter Lift Station Rehabilitation . 2 1 1 4 N
1.11 Denny's Lift Station Rehabilitation 1 1 2 IV
J,OWRR CEDAR RIVER BASIN
2.1 East Renton Interceptor 4 2 5 11 I
2.2 Interim Moratorium Area Improvements 4 2 5 11 I
2.3 Cottonwood Lift Station Replacement 6 2 6 14 I
2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) 5 2 6 13 I
2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) 5 2 6 13 I
2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) 4 1 4 9 II
2.7 Highlands Sewer Replacement,Phase III 3 1 3 7 II
2.8 South Highlands Interbasin Transfer 4 3 7 II
1 2.9 Honeydew Lift Station Elimination3 1 3 7 II
2.10 Union 600 Lift Station Elimination 2 1 3 6 III
2.11 Falcon Ridge Lift Station Elimination 2 1 3 6 III
2.12 NE 7th Place Sewer Replacement 2 3 5 IV
LAKE WASHINGTON EAST BASIN
3.1 Lake Washington No.2 Lift Station Replacement 5 2 3 10 I
3.2 West Kennydale Interceptor 2 1 5 8 II
3.3 Highlands Sewer Replacement,Phases I&II 5 1 3 9 II
3.4 Highgate Lift Station Elimination 3 1 3 7 II
35 East Kermydale Interceptor 2 1 4 7 II
3.6 Azalea Lane Lift Station Elimination 2 . 2 3 7 II
3.7 Kennydale Lakefront Sewer System Study 3 1 2 6 III
3.8 Park Avenue Interceptor 3 1 2 6 III
1 3.9 Boeing Lift Station Elimination 3 1 2 6 N
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) 3 1 2 6 III
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) 3 1 2 6 III
BLACK RIVER BASIN
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) 4 1 4 9 II
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) 3 1 3 7 II
4.3 Talbot Crest Lift Station Elimination 3 1 2 6 III
4.4 SW 34th Street Interceptor Replacement 2 1 2 5 IV
j 4.5 East Valley Lift Station Rehabilitation 2 1 2 5 IV
4.6 Lind Avenue Lift Station Rehabilitation 2 1 2 5 IV
4.7 Talbot Road Interceptor Replacement 2 1 2 5 N
LAKE WASHINGTON WEST BASIN
5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) 4 1 2 7 II
5.2 Renton Avenue Interceptor 2 1 1 4 N
5.3 Eerlington School Lift Station Elimination 3 1 2 6 III
5.4 Sears Lift Station Replacement 2 1 2 5 N
5.5 Airport Lift Station Rehabilitation 2 2 4 N _
DUWAMISH ESTUARY BASIN
6.1 I Black River Interceptor 1 1 IV
SYSTEM WIDE IMPROVEMENTS
1 7.1 Telemetry and Data Logging System Replacement 3 2 2 7 II
7.2 Infiltration and Inflow Testing and Monitoring Annual
7.3 Existing Sewer Grouting Annual
7.4 Miscellaneous Sewer Replacement Annual
6-3
CHAPTER SIX
i .
with rankings between the 25th and the 50th percentiles. The fourth quartile (Quartile IV)
were those projects with rankings below the 25th percentile.
These project rankings cannot be used solely to prepare the Capital Improvement
Program. The project rankings do not take into consideration engineering judgment or
scheduling of dependent projects. Engineering judgment involves the trained observation
of non-quantifiable impacts of a project. The scheduling of projects involves determining
which projects must be completed before other projects can begin. For these reasons, the
project ranking is best used as one of many tools to establish a Capital Improvement
Program. TABLE VI-2 presents the project priority along with brief comments regarding
any inconsistency between the project quartile and the project priority.
C. CAPITAL IMPROVEMENT DESCRIPTION
A list of all the proposed capital improvements, organized by drainage basin, follows. A brief
description of the specific system deficiency, its solution and summary data are included.
System improvements are presented in this chapter in the following order:
• A list of each proposed improvement by basin with a brief description of the
criteria used,the estimated current cost of the improvement,and the recommended
years for construction.
• A summary of improvements by priority (TABLE VI-3).
• A summary of improvements by project type (TABLE VI-4).
• A summary of the estimated project costs and.a schedule for implementation.
(TABLE VI-5A & VI-5B).
• A summary of funding sources for each proposed improvement (TABLE VI-6A
& VI-6B)
In addition, the recommended improvements are shown in plan view in FIGURE 8.
- t
6-4
•
Conclusions and Improvements
TABLE VI-2: PROPOSED IMPROVEMENTS PRIORITY SUMMARY
i PROJECT PROPOSED CAPITAL IMPROVEMENTS QUARTILE PRIORITY COMMENTS
NUMBER
MAY CREEK BASIN •
1.1 Devil's Elbow Lift Station Rehabilitation I A
1.2 Devil's Elbow Force Main Repair I A
1.3 May Valley Interceptor,Section 2 I A
1.4 Honey Creek Interceptor,Phase IV I B Dependent on Project 1.3
13 Sierra Heights Sewer System Construction I B Dependent on Projects 1.1 and 1.2
1.6 Sunset Lift Station Elimination I D Dependent on Projects 1.3 and 1.4
1.7 Devil's Elbow Lift Station Elimination II D Dependent on Projects 1.3 and 1.4
1.8 May Valley Interceptor,Section 3 III E Dependent on Project 1.3
1.9 Summer Wind Lift Station Elimination III F Dependent on Projects 1.3 and 1.8
1.10 Misty Cove and Baxter Lift Station Rehabilitation IV F
1.11 Denny's Lift Station Rehabilitation IV F
J.OWE.R CEDAR RIVER BASIN
2.1 East Renton Interceptor I A
i 2.2 Interim Moratorium Area Improvements I A
2.3 Cottonwood Lift Station Replacement I A
2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) I A
2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) I C Dependent on Project 2.4
2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) II E , Dependent on Projects 2.4 and 2.5
2.7 Highlands Sewer Replacement,Phase III II B
2.8 South Highlands Interbasin Transfer II B
2.9- Honeydew Lift Station Elimination II C Dependent on proposed development
2.10 Union 600 Lift Station Elimination III F Dependent on Project 2.1
2.11 Falcon Ridge Lift Station Elimination III F Dependent on proposed development
2.12 NE 7th Place Sewer Replacement IV F
JAKE WASHINGTON EAST BASIN
3.1 Lake Washington No.2 Lift Station Replacement I A
3.2 West Kennydale Interceptor II A Project in progress
3.3 Highlands Sewer Replacement,Phases I&II II B
3.4 Highgate Lift Station Elimination II B Dependent on proposed development
, 3.5 East Kennydale Interceptor II C Dependent on other City improvements
3.6 Azalea Lane Lift Station Elimination II D Dependent on Project 33
3.7 Kennydale Lakefront Sewer System Study III C
3.8 Park Avenue Interceptor III C
3.9 Boeing Lift Station Elimination III E Dependent on Project 3.8
' 3.10 North Renton Sewer Replacement,Phase I(Wells/Park) III E
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) III F
a BLACK RIVER BASIN
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) II A Performed during I-405 work
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) II B
4.3 Talbot Crest Lift Station Elimination III C
4.4 SW 34th Street Interceptor Replacement IV D
4.5 East Valley Lift Station Rehabilitation IV D
1 4.6 Lind Avenue Lift Station Rehabilitation IV E
4.7 Talbot Road Interceptor Replacement IV E
LAKE WASHINGTON WEST BASIN
5.1 Renton CBD Sewer Replacemtent,Phase III(S.4th Street) II B
5.2 Renton Avenue Interceptor IV F
5.3 Earlington School Lift Station Elimination III F Dependent on Project 5.2
5.4 Sears Lift Station Replacement IV F
5.5 Airport Lift Station Rehabilitation .IV F
i)UWAMLSH ESTUARY BASIN
6.1 Black River Interceptor IV F
SYSTEM WIDE IMPROVEMENTS
7.1 Telemetry and Data Logging System Replacement II B
7.2 Infiltration and Inflow Testing and Monitoring Annual
7.3 Existing Sewer Grouting Annual
7.4 Miscellaneous Sewer Replacement Annual
6-5
CHAPTER SIX
1. MAY CREEK BASIN
Devil's Elbow Lift Station Rehabilitation
System Deficiency: Construction of the Devil's Elbow Lift Station was completed in
1986. However, significant mechanical difficulties have made the lift station unreliable.
In addition, excessive vandalism has occurred due to the lift station's remote location.
During peak,wet-weather flows, the Devil's Elbow lift station has overflowed into Honey
Creek. The lift station operation must be made more reliable and the facility must be
made more resistant to vandalism.
Improvement: Correct mechanical problems with lift station in order to meet current —
design standards.
CIP Project No. 1.1 Cost: $167,000 Priority A
Beginning: 1991 Completion: 1991
Devil's Elbow Force Main Repair
System Deficiency: Northeast 27th Street has been closed to automobile traffic due to
the unstable side slopes of the Honey Creek ravine. The force main for the Devil's
Elbow Lift Station, which is located on NE 27th Street has the potential of structural
failure if the side slopes supporting the roadway were to deteriorate further.
Reconstruction of several sections of the force main is required to increase its reliability.
Improvement: Correct instability problems with force main to ensure reliability.
CIP Project No. 1.2 Cost: $75,000 Priority A
Beginning: 1991 Completion: 1991
•
6-6
Conclusions and Improvements
May Valley Interceptor, Section 2
System Deficiency: The May Valley Interceptor is a facility that is proposed to be
constructed by METRO to serve the sewerage needs of this basin. Section 1 of the May
Valley Interceptor has been constructed from METRO's East Side Interceptor under
Interstate 405 to Jones Avenue NE. Section 2 would extend south along Jones Avenue
NE which parallels May Creek to Honey Creek. At this time METRO intends to
construct Section 2 of the May Valley Interceptor. However, the City may need to take
the initiative to construct the May Valley Interceptor, Section 2, if METROs schedule
does not coincide with the City's needs. Construction of Section 2 of the May Valley
Interceptor is necessary to complete the Honey Creek Interceptor and eliminate the need
for the Sunset and Devil's Elbow Lift Stations. The May Valley Interceptor, Section 2,
would require approximately 5,400 lineal feet of 24-inch gravity sewer.
Improvements: Construct gravity sewer service in the May Creek Basin to Honey Creek
CIP Project No. 1.3 Cost: $1,448,000 Priority A
Beginning: 1991 Completion: 1993
Honey Creek Interceptor, Phase IV
System Deficiency: Phases I through III of the Honey Creek Interceptor were completed
in 1986. However,frequent mechanical problems with the Devil's Elbow Lift Station and
structural problems with the Devil's Elbow force main require that a long-term solution
' be developed for this basin. The solution is the completion of the Honey Creek
Interceptor,Phase N,which would provide a gravity interceptor from the existing Devil's
Elbow Lift Station down to the mouth of the Honey Creek. In conjunction with this
project, the May Valley Interceptor, Section 2, must be completed. Honey Creek
Interceptor, Phase N, would require approximately 2,700 lineal feet of 12-inch gravity
sewer.
Improvement: Complete construction of the Honey Creek Interceptor in order to
eliminate the Devil's Elbow and Sunset Lift Stations.
CIP Project No. 1.4 Cost: $945,000 Priority B
Beginning: 1992 Completion: 1993
6-7
CHAPTER SIX
Sierra Heights Sewer System Construction
System Deficiency: The Sierra Heights area includes residential developments located
both inside and outside the City limits. Increased septic system failures have prompted
the King County Health Department and the City of Renton to examine providing sanitary
sewer service to this residential area. Wastewater from this area would discharge into the
Honey Creek Interceptor. This project should not be completed until improvements are
made to the Devil's Elbow Lift Station and force main. The Sierra Heights sewer system
would require approximately 8100 lineal feet of 12-inch and 8-inch gravity sewer.
Improvement: Construct sanitary sewers to replace failing septic systems.
CIP Project No. 1.5 Cost: $1,920,000 Priority B
Beginning: 1992 Completion: 1994
Sunset Lift Station Elimination
System Deficiency: After completion of Section 2 of the May Valley Interceptor and
Phase 4 of the Honey Creek Interceptor,the Sunset Lift Station can be placed on standby.
Improvement: Place lift station on standby after completion of the Honey Creek
Interceptor.
CIP Project No. 1.6 Cost: $50,000 Priority D
Beginning: 1994 Completion: 1995
Devil's Elbow Lift Station Elimination
System Deficiency: After completion of Section 2 of the May Valley Interceptor and
Phase 4 of the Honey Creek Interceptor,the Devil's Elbow Lift Station can be eliminated.
This would require full dismantling of the existing.lift station facilities. The existing
force main will remain in place.
Improvement: Disassemble and remove existing lift station after completion of Honey
Creek Interceptor.
CIP Project No. 1.7 Cost: $50,000 Priority D
Beginning: 1994 Completion: 1995
6-8
Conclusions and Improvements
May Valley Interceptor, Section 3
System Deficiency: This is a project planned by METRO to serve this basin. Section
3 begins at Honey Creek and continues along May Creek to 148th Avenue SE. Section
3 of the May Valley Interceptor would require approximately 10,000 lineal feet of 24-inch
gravity sewer.
Improvement: Construct gravity sewer service in the May Creek Basin from Honey
Creek to 148th Avenue SE.
CIP Project No. 1.8 Cost: $3,500,000 Priority E
Beginning: 1995 Completion: 2000
Summer Wind Lift Station Elimination
System Deficiency: A portion of the plat of Summer Wind lies outside the Honey Creek
subbasin. The Summer Wind Lift Station which serves this area can be eliminated
through the construction of a gravity sewer north to May Creek. This project will first
require the construction of Section 3 of the May Valley Interceptor. This project would
require approximately 1200 lineal feet of 8-inch gravity sewer.
•
Improvement: Disassemble and remove existing lift station after completion of gravity
sewers to Section 3 of the May Valley Interceptor.
CIP Project No. 1.9 Cost: $500,000 Priority F
Beginning: 1998 Completion: 2000
Misty Cove and Baxter Lift Station Rehabilitation
System Deficiency: Misty Cove Lift Station currently pumps into the Baxter Lift Station
which pumps into the METRO Sewer. It may be possible to eliminate one of these lift
stations by providing gravity sewer from the Baxter Lift Station to Misty Cove. The
Misty Cove Lift Station has sufficient wet well volume to accommodate this change.
Improvement: Improve operation, safety, and reliability of these lift stations.
CIP Project No. 1.10 Cost: $450,000 Priority F
Beginning: 1996 Completion: 1998
6-9
CHAPTER SIX
Denny's Lift Station Rehabilitation
System Deficiency: The Denny's Lift Station experiences problems including excessive
grease buildup in the wet well and periodic flooding during intense storms. Rehabilitation
of the station should be done to provide greater protection and increased reliability.
Improvement: Improve-operation, safety, and reliability of this lift station.
CIP Project No. 1.11 Cost: $70,000 Priority F
Beginning: 1996 Completion: 1996
2. LOWER CEDAR RIVER BASIN
East Renton Interceptor
System Deficiency: The East Renton Interceptor is currently in the planning stages. Its
purpose is to eliminate capacity problems within the existing sanitary sewer systems in
the South Highland, Maplewood and Heather Downs subbasins. The planning and
construction of this interceptor is in direct response to an enactment of a Sanitary Sewer
Moratorium by the City Council under Resolution No. 2764. Upon completion of the
preliminary design and environmental impact statement, a preferred alignment will be
selected for final design and construction. The selected.interceptor alternative could
require as much as 12,300 lineal feet of gravity sewer and possibly the construction of
a major sewage lift station.
Improvement: Resolve capacity limitations in the South Highlands, Maplewood and
Heather Downs subbasins by building the East Renton Interceptor.
II
CIP Project No. 2.1 Cost: $4,445,000 Priority A
Beginning: 1989 Completion: 1992
Interim Moratorium Area Improvements
System Deficiency: Capacity problems exist in the South Highlands, Maplewood and
Heather Downs Subbasins. As a result of the Sanitary Sewer Moratorium in those areas,
the City Councildirected the Public Works Department to investigate potential areas for
interim improvements that could alleviate existing capacity problems within these
subbasins. The City is currently investigating several interim improvements.
Improvement: Investigate interim improvements as a means of alleviating of existing
capacity problems in the South Highlands, Maplewood and Heather Downs Subbasins.
CIP Project No. 2.2 Cost: $332,000 Priority'A
Beginning: 1990 Completion: 1991
6-10
Conclusions and Improvements
Cottonwood Lift Station Replacement
System Deficiency: The Cottonwood Lift Station is in poor condition,is a contamination
•
threat to the City's aquifer and does not meet current design standards, which include an
overflow bypass of the Cedar River. Since this lift station is located within Zone No. 1
of the Aquifer Protection Area, overflows from this station would risk contaminating
groundwater. Since this lift station is considered to be permanent, it should be replaced
with a more reliable facility.
Improvement: Replace lift station with a more reliable one.
CIP Project No. 2.3 Cost: $272,000 Priority A
Beginning: 1990 Completion: 1991
Central Renton Sewer Replacement, Phase I (Pelle/Garden)
I
System Deficiency: These existing sewers are old and were constructed with inadequate
slopes which do not allow self-flushing of the sewer lines. Consequently, maintenance
crews are required to flush these sewer lines approximately once a month. These sewers
also pose a threat to the City's drinking water supply, due to its location within Zone 1
of the aquifer protection area. This project involves the replacement of approximately
3800 lineal feet of existing 8-inch gravity sewer between Pelly Avenue N,Garden Avenue
N, N 4th Street, and N 1st Street.
Improvement: Replace old sewers to reduce the threat of aquifer contamination and to
reduce excessive maintenance.
CIP Project No. 2.4 Cost: $270,000 Priority A
Beginning: 1991 Completion: 1992
6-11
1
•
CHAPTER SIX
Central Renton Sewer Replacement, Phase II (Williams/Pelly)
System Deficiency: These existing sewers are old and were constructed with inadequate
slopes which do not allow self flushing of the sewer lines. Consequently, they require
excessive maintenance; crews are required to flush them approximately once a month.
These sewers also pose a threat to the City's drinking water supply, due to its location
within Zone 1 of the aquifer protection area. This project involves the replacement of
approximately 3400 lineal feet of existing 8-inch gravity sewer between Williams Avenue
N, Pelly Avenue N, N 4th Street, and N 1st Street.
Improvement: Replace old sewers to reduce the threat of aquifer contamination and to
reduce excessive maintenance
CIP Project No. 2.5 Cost: $200,000 Priority C
Beginning: 1993 Completion: 1994
Central Renton Sewer Replacement, Phase III (Houser/Factory)
System Deficiency: These existing sewers are old and are located within the Zone No.
1 of the Aquifer Protection Area, thus posing a threat to the City's drinking water supply
if any exfiltration of wastewater occurred. This project involves the replacement of
approximately 3200 lineal feet of existing 8-inch gravity sewer between Factory Avenue
N, Houser Way N, and N 4th Street.
Improvement: Replace existing sewers to reduce the threat of aquifer contamination. •
CIP Project No. 2.6 Cost: $200,000 Priority E
Beginning: 1995 Completion: 1996
Highlands Sewer Replacement, Phase III
System Deficiency: Older sewers will not accommodate future wastewater flows within
this subbasin. This project involves the replacement of approximately 500 lineal feet of
existing 8-inch gravity sewer along Edmonds Avenue NE between NE 5th and NE 6th
Streets. This project is to be done in conjunction with the overlay of Edmonds Avenue.
The new gravity sewer should be 12-inch in order to accommodate future wastewater
flows.
Improvement: Replace old sewers during street improvement project.
CIP Project No. 2.7 Cost: $51,000 Priority B
Beginning: 1992 . Completion: 1993
6-12
Conclusions and Improvements
South Highlands Interbasin Transfer
System Deficiency: Capacity problems exist within the South Highlands Basin and could
be alleviated with the replacement and up-sizing of existing sanitary sewers as well as the
construction of additional sanitary sewers. These improvements were identified by RH2
Engineering,P.S.in April 1990 during their investigation of facility improvements for the
South Highlands Sanitary Sewer Basin.
Improvement: Replace and up-size existing seWer and construct new sewers to
optimize existing sewers in this area.
CIP Project No. 2.8 Cost: $300,000 Priority B
Beginning: 1990 Completion: 1991
Honeydew Lift Station Elimination
System Deficiency: The Honeydew Lift Station can be eliminated through the
construction of a gravity interceptor along private property. The sanitary sewer would
j require approximately 2600 lineal feet of 8-inch and 12-inch gravity sewer. The
Honeydew Lift Station should be eliminated and the gravity sewer constructed during the
development of these parcels.
Improvement: Disassemble and remove lift station after gravity sewer is provided to
this area.
CIP Project No. 2.9 Cost: $570,000 Priority C
Beginning: 1993 Completion: 1995
Union 600 Lift Station Elimination
System Deficiency: The Union 600 Lift Station can be eliminated through the
construction of a gravity sewer to NE 4th Street. A portion of this gravity sewer has
already been constructed and the remaining section would require approximately 1000
lineal feet of 8-inch gravity sewer. This project should not be completed until the
completion the East Renton Interceptor, which will free up capacity within the Heather
j ! Downs subbasin.
Improvement: Disassemble and remove lift station after completion of gravity sewers
in this area.
•
CIP Project No. 2.10 Cost: $180,000 Priority F
Beginning: 1996 Completion: 1997
6-13
CHAPTER SIX- •
Falcon Ridge Lift Station Elimination
System Deficiency: This project involves the construction of approximately 2000 lineal
feet of 8-inch and 12-inch gravity sewer from the existing lift station to METRO's Cedar
River Interceptor. This project will be done in conjunction with the development of the
property between the lift station and the Cedar River.
Improvement: Disassemble and remove lift station after completion of gravity sewers
in this area.
CIP Project No. 2.11 Cost: $700,000 Priority F
Beginning: 1996 Completion: 2000
NE 7th Place Sewer Replacement
System Deficiency: These existing sewers are currently experiencing wastewater flows
that exceed their design capacity. This project involves replacing and up-sizing
approximately 840 lineal feet of existing 8-inch gravity sewer to 12-inch sewer pipe. This
project may not be necessary if the Honeydew Lift Station is eliminated in the near
future. An alternative is to construct a bypass sewer along NE 6th Street as
recommended in the RH2 Engineering, P.S. investigation of the South Highlands Basin.
Improvement: Replace existing sewer to eliminate existing capacity problems.
CIP Project No. 2.12 Cost: $110,000 Priority F
Beginning: 1996 Completion: 1997
South Highlands Sewer Collection System Replacement
System Deficiency: The existing collection system within the South Highland subbasin
was constructed in the early 1940s and is comprised of 8-inch concrete sewers which are
approaching the end of their useful life and need to be replaced before structural failures
occur. This project involves the replacement of approximately 34,000 lineal feet of
existing gravity sewer.
•
Improvement: Replace existing collection system between NE 3rd Street,NE 7th Street,
Monroe Avenue NE, and Sunset Avenue NE.
CIP Number: 2.13 Cost: $6,800,000 Priority: G
Beginning: 2001 Completion: 2005
•
6-14
Conclusions and Improvements
3. LAKE WASHINGTON EAST BASIN
Lake Washington No. 2 Lift Station Replacement
System Deficiency: The lift station, a wet well, mounted duplex, is in poor condition,
does not meet current standards, and is dangerous to maintain. The check valve and shut-
off valve are located in the wet well and are experiencing severe corrosion. In addition,
the ladder in the wet well is dangerous because its supports have corroded to the point
of structural failure.
Improvement: Replace lift station.
CIP Project No. 3.1 Cost: $250,000 Priority A
Beginning: 1991 Completion: 1992
West Kennvdale Interceptor
System Deficiency: The West Kennydale Interceptor is currently under construction and
is expected to be completed in 1991. This interceptor can potentially serve a large
portion of the Kennydale subbasin. The West Kennydale Interceptor is approximately
1750 lineal of 8-inch gravity sewer.
Improvement: Provide gravity sewer service to a currently unsewered area.
CIP Project No. 3.2 Cost: $ 420,500 Priority A
Beginning: 1989 Completion: 1991
Highlands Sewer Replacement, Phases I & II
System Deficiency: Concrete sewers have deteriorated to the point of requiring
replacement of them by a new sewer interceptor along Aberdeen Avenue NE, NE 9th
Street, and Harrington Avenue NE between NE 7th Street and NE Sunset Boulevard.
Total sewer construction is approximately 3,500 lineal feet of 12-inch and 15-inch of
gravity sewer. This project is located in Zone 2 of the Aquifer Protection Area.
Improvement: Construct sewer interceptor.
CIP Project No. 3.3 Cost: $460,000 Priority B
Beginning: 1992 Completion: 1991
6-15
1 -
CHAPTER SIX
Highgate Lift Station Elimination
System Deficiency: After completion of the West Kennydale Interceptor, the Highgate
Lift Station can be eliminated with the construction of approximately 1000 lineal feet of
12-inch gravity sewer. The construction of this gravity sewer will require easements
across private property to the north of this lift station.
Improvement: Disassemble and remove existing lift station through the construction of
a gravity collection sewer.
CIP Project No. 3.4 Cost: $225,000 Priority B ,`
Beginning: 1992 Completion: 1993
East Kennydale Interceptor
System Deficiency: Currently, the Kennydale Subbasin is currently unsewered or is
served by the Azalea Lane Lift Station. The East Kennydale Interceptor would serve a
major portion of the subbasin. The construction of this interceptor would also allow the
elimination of the Azalea Lane Lift Station. The East Kennydale Interceptor would
require approximately 4350 lineal feet of 12-inch and 8-inch gravity sewer.
Improvement: Provide gravity sewer service through construction of a new
interceptor.
CIP Project No. 3.5 Cost: $750,000 Priority C
Beginning: 1993 Completion: 1995
Azalea Lane Lift Station Elimination
System Deficiency: The Azalea Lane Lift Station currently serves the communities east
of Aberdeen Avenue NE and experiences periodic flooding during storm conditions
because of its location. The lift station could be eliminated after the completion of the
East Kennydale Interceptor. The lift station would be fully dismantled,but the force main
would remain in place.
Improvement: Disassemble and remove existing lift station after completion of East
Kennydale Interceptor.
CIP Project No. 3.6 Cost: $50,000 Priority D
Beginning: 1994 Completion: 1995
6-16
Conclusions and Improvements
Kennydale Lakefront Sewer System Study
System Deficiency: The Kennydale Lakefront sewer system has several undesirable
operating characteristics: First, this low-pressure sewer main requires a considerable
amount of maintenance which is made more difficult due to its location along the
lakefront. Second, it uses a flush station which pumps water from Lake Washington in
order to flush wastewater to the Lake Washington No. 2 Lift Station. Third, the sewer
system poses a tremendous environmental threat to both the environment and the property
owners adjacent to this system. This study would examine and evaluate alternatives to
improve the operation of this sewer system.
Improvement: Examine and evaluate alternatives for improving system operation in this
area.
CIP Project No. 3.7 Cost: $50,000 Priority C
Beginning: 1993 Completion: 1994
Park Avenue Interceptor
System Deficiency: Currently, gravity sewer service is unavailable to Boeing Facilities.
The Boeing Lift Station could be eliminated by building a new interceptor. The Park
Avenue Interceptor would run north along Park Avenue N from the intersection with N
8th Street to METRO's East Side Interceptor. This interceptor construction is to be done
in conjunction with the resurfacing of Park Avenue N. The Park Avenue Interceptor
would require approximately 2000 lineal feet of 12-inch gravity sewer.
Improvement: Provide gravity sewer service through construction of a new interceptor.
CIP Project No. 3.8 Cost: $500,000 Priority C
Beginning: 1993 Completion: 1994
Boeing Lift Station Elimination
System Deficiency: The Boeing Lift Station currently serves the industrial properties
owned by the Boeing Airplane Company. The construction of the Park Avenue
Interceptor would allow the elimination of the lift station by providing gravity sanitary
sewer service to these industrial facilities. The lift station would be fully dismantled, but
the force main would remain in place.
Improvement: Eliminate Boeing Lift Station.
CIP Project No. 3.9 Cost: $50,000 Priority E
Beginning: 1996 Completion: 1997
6-17
CHAPTER SIX
North Renton Sewer Replacement, Phase I (Wells/Park)
System Deficiency: The existing gravity sewers are old, deteriorating and were
constructed with an inadequate slope which does not allow self-flushing of the sewer
lines. Consequently, maintenance crews are required to flush these sewer lines
approximately once a month. In addition, their condition has deteriorated and requires
replacements.
Improvement: The replacement.of approximately 2400 lineal feet of existing 8-inch .
gravity sewer between N 6th Street, N 4th Street, Wells Avenue N, and Logan Avenue
N.
CIP Project No. 3.10 Cost: $250,000 Priority E
Beginning: 1995 Completion: 1996
North Renton Sewer Replacement, Phase II (Logan/Wells)
System Deficiency: The existing sewers are old and deteriorating and were constructed
with an inadequate slope which does not allow self-flushing of the sewer lines.
Consequently, excessive maintenance is required; result maintenance crews flush these
sewer lines approximately once a month.
Improvement: The replacement of approximately 2600 lineal feet of existing 8-inch
gravity sewer between N 6th Street,N 4th Street,Wells Avenue N and Logan Avenue N.
CIP Project No. 3.11 Cost: $300,000 PriorityF
Beginning: 1996 Completion: 1997
North Highlands Sewer Collection System Replacement
System Deficiency: The existing collection system within the North Highlands subbasin
was constructed in the early 1940s and is comprised of existing 8-inch concrete sewers
which are approaching the end of their useful life and need to be replaced before
structural failure occurs. This project involves the replacement of approximately 29,000
lineal feet of existing gravity sewer.
Improvement: Replace existing collection system between NE 7th Street, NE Sunset
Boulevard, and Monroe Avenue NE.
CIP Number: 3.12 Cost: $5,800,000 Priority: G
Beginning: 2001 Completion: 2005
6-18
Conclusions and Improvements
4. BLACK RIVER BASIN
Renton CBD Sewer Replacement, Phase I (Mill Avenue)
System Deficiency: This project involves the replacement of approximately 1600 lineal
feet of 8-inch and 12-inch older gravity sewer along Mill Avenue S between S 5th Street
and S 2nd Street. This project is to be done in conjunction with the reconstruction of
Interstate 405.
Improvement: Replace old sewers during I-405 construction.
CIP Project No. 4.1 Cost: $121,000 Priority A
Beginning: 1990 Completion: 1991
Renton CBD Sewer Replacement, Phase II (Logan and Williams Ave.)
System Deficiency: The existing sewers, located on Logan Avenue S and Williams
Avenue S, are old and have deteriorated beyond repair. Sewer replacements would
improve sanitary sewer service to these residential areas.
Improvement: Replacement of approximately 2000 lineal feet of existing 8-inch
gravity sewer which will improve residential sanitary sewer service.
CIP Project No. 4.2 Cost: $260,000 Priority B
Beginning: 1992 Completion: 1993
Talbot Crest Lift Station Elimination
System Deficiency: The Talbot Crest Lift Station does not meet current design standards.
It serves a residential development along Talbot Crest Drive. Currently, the emergency
overflow for this lift station discharges into the Panther Creek Wetlands area.
Improvement: This lift station can be eliminated through the construction of a
approximately 1200 lineal feet of 8-inch gravity sewer from the lift station under the East
Valley Freeway to the East Valley Road.
CIP Project No. 4.3 Cost: $350,000 Priority C
Beginning: 1993 Completion: 1995
6-19
•
CHAPTER SIX
SW 34th Street Interceptor Replacement
P P
System Deficiency: This project involves the replacement of approximately 1500 lineal
feet of existing 8-inch gravity sewer. These existing sewers were undersized to
accommodate the area which can be potentially served with this interceptor. The new
interceptor would be 12-inch.
Improvement: Replace existing sewers which are undersized to serve this area.
CIP Project No. 4.4 Cost: $450,000 Priority D
Beginning: 1994 Completion: 1995
East Valley Lift Station Rehabilitation
System Deficiency: The East Valley Lift Station is considered a permanent lift station, _
which will serve existing and future commercial developments within a major portion of
the Renton Industrial Subbasin. It does not meet current design codes because it lacks
full redundancy of its vacuum priming system. If the vacuum priming system was to fail,
the lift station would not operate. In addition, the above grade electrical structures have
experienced vandalism.
Improvement: The lift station required rehabilitation anti major modifications to
improve reliability and in order to be upgraded as a permanent lift station.
CIP Project No. 4.5 Cost: $100,000 Priority D
Beginning: 1994 Completion: 1995
Lind Avenue Lift Station Rehabilitation
System Deficiency: The Lind Avenue Lift Station, considered to be a permanent lift
station, was upgraded to a triplex lift station in 1983 and is in good condition. It serves
a major portion of the Renton Industrial Subbasin. However, the above grade electrical _
enclosures are susceptible to vandalism.
Improvement: Additional protection should be provided for the electrical enclosures at
this site and modifications made to improve reliability.
CIP Project No. 4.6 Cost: $20,000 Priority E
Beginning: 1995 Completion: 1995
6-20
•
Conclusions and Improvements
Talbot Road Interceptor Replacement
System Deficiency: The existing Talbot Road Interceptor is currently undersized to serve
this basin. These existing 8-inch sanitary sewers should be replaced with 12-inch pipe.
This project involves the replacement approximately 2500 lineal feet of existing gravity
sewer.
Improvement: Replace undersized interceptor with larger interceptor to better serve this
area.
CIP Project No. 4.7 Cost: $750,000 Priority E
Beginning: 1995 Completion: 1997
Scenic Hills Sewer Collection
System Deficiency: The existing collection system within the Scenic Hills area of the
South Renton subbasin was constructed between 1947 and 1949 and is comprised of 6-
inch and 8-inch concrete sewers which are approaching the end of their useful life and
need to be replaced before structural failures occur. This project involves replacement
of approximately 18,100 lineal feet of existing gravity sewer.
Improvement: Replace existing collection system within the Scenic Hills area.
CIP Number: 4.8 Cost: $3,630,000 Priority: G
Beginning: 2006 Completion: 2008
Talbot Hill Sewer Collection System Replacement
System Deficiency: The existing collection system within the Talbot Hills subbasin was
constructed in 1960 and is comprised of 8-inch and 10-inch concrete sewers which are
approaching the end of their useful life and need to be replaced before structural failures
become problematic. This project involves replacement of approximately 20,600 lineal
feet of existing gravity sewer.
Improvement: Replace existing collection system between Lake Avenue S., S. 14th
• Street, State Route 515, and S. 23rd Street.
CIP Number: 4.9. Cost: $4,120,000 Priority: G
Beginning: 2009 Completion: 2010
6-21
CHAPTER SIX
5. LAKE WASHINGTON WEST BASIN
Renton CBD Sewer Replacement, Phase III (S. 4th Street)
System Deficiency: Existing sewers are old and in poor condition. Replacement of these
sanitary sewer pipeline would improve sewer service to this residential area.
Improvement: Replacement of approximately 500 lineal feet of 8-inch gravity sewer
along S 4th Street between Morris Avenue S and Burnett Avenue S.
CIP Project No. 5.1 Cost: $184,000 Priority B
Beginning: 1992 Completion: 1993
Renton Avenue Interceptor
System Deficiency: A portion of the West Renton Subbasin is currently unsewered. This
project would also allow for the elimination of the Earlington School Lift Station. The
Renton Avenue Interceptor would require approximately 5,500 lineal feet of 12-inch
gravity sewer.
•
Improvement: If this portion of the Renton Subbasin is annexed, it should be sewered
through the construction of a new sewer interceptor along Renton Avenue S, west of
Rainier Avenue N.
CIP Project No. 5.2 Cost: $1,500,000 Priority F
Beginning: 1996 Completion: 2000 •
Earlington School Lift Station Elimination
System Deficiency: The Earlington School Lift Station currently serves the Earlington
School near the intersection of S 132nd Street and S Langston Street. Flow from this lift
station is causing capacity problems in the sewer interceptor along W Sunset Boulevard.
The elimination of this lift station will be possible after the completion of the Renton
Avenue Interceptor. The lift station would be fully dismantled, but the force main would
remain in place.
Improvement: Disassemble and remove existing lift station after completion of the
Renton Avenue Interceptor.
CIP Project No. 5.3 Cost: $50,000 Priority F
Beginning: 2000 Completion: 2001
6-22
r '
Conclusions and Improvements
Sears Lift Station Replacement
System Deficiency: The Sears Lift Station is in fair condition and does not meet current
design standards for a permanent facility. If it is to be considered permanent, it should
be replaced with a more efficient and reliable facility.
Improvement: Examine the possibility of eliminating this lift station through the
construction of a gravity interceptor south along Rainier Avenue S to the METRO
Interceptor.
CIP Project No. 5.4 Cost: $350,000 Priority F
Beginning: 1996 Completion: 1998
Airport Lift Station Rehabilitation
System Deficiency: The reliability of this facility needs to be improved.
Improvement: Install emergency power connection.
CIP Project No. 5.5 Cost: $20,000 Priority F
Beginning: 1996 Completion: 1996
West Renton Sewer Collection System Replacement
System Deficiency: The existing collection system within the West Renton subbasin was
constructed in 1951 and is comprised of 6-inch and 8-inch concrete sewers which are
approaching the end of their useful life and need to be replaced before structural failures
occur. This project involves the replacement of approximately 16,500 lineal feet of
existing gravity sewer.
Improvement: Replace existing collection system between S. 134th Street, 80th Avenue
S., and SW Sunset Boulevard.
CIP Number: 5.6 Cost $3,300,000 Priority: G
Beginning: 2006 Completion: 2008
6-23
CHAPTER SIX
6. DUWAMISH ESTUARY BASIN
Black River Interceptor
System Deficiency: Currently, the Black River Basin is unsewered. Providing service
would require the construction of an interceptor along 68th Avenue S from the METRO
Treatment Plant to Martin Luther King Way S. The Interceptor would require
approximately 6000 lineal feet of 8-inch and 12-inch gravity sewer
Improvement: Construct an interceptor along 68th Ave. S.
iI
CIP Project No. 6.1 Cost: $1,320,000 Priority F
Beginning: 1996 Completion: 1999
7. SYSTEM WIDE IMPROVEMENTS
Replace Telemetry and Data Logging System
System Deficiency: The Telemetry and Data Logging System needs to be replaced. The
phased improvements, beginning in 1992 and ending in 1996, are as follows:
1992 - Predesign and preliminary system design.
1993 - System design and Phase I construction including, master station
computer equipment, and telemetry from 8 of the most critical lift
stations in the system.
1994 - Add telemetry to the remainder of the lift stations.
1995 - Add telemetry to key collection system locations
1996 - Develop optimization software.
Improvement: Install a new telemetry and data logging system.
CIP Project No. 7.1 Cost: $675,000 Priority B
Beginning: 1992 Completion: 1996
6-24
Conclusions and Improvements
Infiltration and Inflow Testing and Monitoring
System Deficiency: Project involves performing infiltration and inflow testing to gather
data to help calibrate the existing sanitary sewer computer model. This information can
also be used to schedule grouting activities of existing sewers which is necessary to meet
METRO's requirements for reducing infiltration and inflow.
- Improvement: Calibrate existing computer model and direct sewer grouting efforts.
CIP Project No. 7.2 Cost: $1,000,000 Priority: Annual
Beginning: 1991 Completion: 2000
Existing Sewer Grouting
System Deficiency: Old sewers and old sewer grouting contribute to excessive
infiltration into the sanitary sewer system. In order to fulfill METRO's new requirements
for reducing infiltration and inflow, this project is necessary. •
Improvement: Grouting of existing sewers.
CIP Project No. 7.3 Cost: $1,000,000 Priority: Annual
Beginning: 1991 Completion: 2000
Miscellaneous Sewer Replacements
System Deficiency: This project is to replace old sewers with structural problems which
are within roadways that are scheduled for resurfacing.
Improvement: Identify and replace old sewers.
CIP Project No. 7.4 Cost: $5,000,000 Priority: Annual
Beginning: 1991 Completion: 2000
6-25
CHAPTER SIX
D. PROPOSED IMPROVEMENTS BY PRIORITY
TABLE VI-3 provides a summary of all proposed projects divided by their priorities. It is our
recommendation that these projects begin in the following schedule:
A - 1991 and Prior
B - 1992
C - 1993
D - 1994
E - 1995
F - 1996 and Future
E. PROPOSED IMPROVEMENT BY PROJECT TYPE
TABLE VI-4 provides a summary of all the proposed projects divided by their project type. The
various typed of projects are listed below: '
Lift Station Replacement
Lift Station Rehabilitation
Lift Station Elimination
Existing Sanitary Sewer Replacement
Proposed Sewer System Additions
Miscellaneous Improvements
6-26
Conclusions and Improvements
TABLE VI-3: PROPOSED IMPROVEMENTS SUMMARY BY PRIORITY
PROJECT PROPOSED CAPITAL IMPROVEMENTS • QUARTILE PRIORITY COMMENTS
NUMBER •
PRIORITY A PROJECTS
1.1 Devil's Elbow Lift Station Rehabilitation I A
1.2 Devil's Elbow Force Main Repair I A
'- 1.3 May Valley Interceptor,Section 2 I A
2.1 East Renton Interceptor I A
2.2 Interim Moratorium Area Improvements I A
2.3 Cottonwood Lift Station Replacement I A
_ 2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) I A
3.1 Lake Washington No.2 Lift Station Replacement I A
3.2 West Kennydale Interceptor II A Project in progress
J 4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) II A Performed during I-405 work
PRIORITY_ B PROJECTS
1.4 Honey Creek Interceptor,Phase IV I B Dependent on Project 1.3
1.5 Sierra Heights Sewer System Construction I B Dependent on Projects 1.1 and 1.2
2.7 Highlands Sewer Replacement,Phase III II B
2.8 South Highlands Interbasin Transfer II B
3.3 Highlands Sewer Replacement,Phases I&II II B
3.4 Highgate Lift Station Elimination II B Dependent on proposed development
4:2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) II B
5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) II B
7.1 Telemetry and Data Logging System Replacement II B
PRIORITY C PROJECTS .
2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) I C Dependent on Project 2.4
1 2.9 Honeydew Lift Station Elimination II C Dependent on proposed development
3.5 East Kermydale Interceptor• II C Dependent on other City improvements
3.7 Kennydale Lakefront Sewer System Study = III C
3.8 Park Avenue Interceptor III C
4.3 Talbot Crest Lift Station Elimination III C •
_P_RiORiTY D PROJECTS
1.6 Sunset Lift Station Elimination I D Dependent on Projects 1.3 and 1.4
1.7 Devil's Elbow Lift Station Flimination II D Dependent on Projects 1.3 and 1.4
3.6 Azalea Lane Lift Station Fliminprion II D Dependent on Project 3.5
4.4 SW 34th Street Interceptor Replacement N D
4.5 East Valley Lift Station Rehabilitation N D
PRIORITY R PRO. .CTS
1.8 May Valley Interceptor,Section 3 III E Dependent on Project 1.3
{ 2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory II E Dependent on Projects 2.4 and 2.5
3.9 Boeing Lift Station Elimination III B Dependent on Project 3.8
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) III E
4.6 Lind Avenue Lift Station Rehabilitation N E
4.7 Talbot Road Interceptor Replacement N E
PRIORITY F PRO iECTS
1.9 Summer Wind Lift Station Elimination III F Dependent on Projects 1.3 and 1.8
1.10 Misty Cove and Baxter Lift Station Rehabilitation N F
1.11 Denny's Lift Station Rehabilitation N F
2.10 Union 600 Lift Station Elimination III F Dependent on Project 2.1
2.11 Falcon Ridge Lift Station Elimination III F Dependent on proposed development '
2.12 NE 7th Place Sewer Replacement N F
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) III F
5.2 Renton Avenue Interceptor N F
"' 5.3 Earlington School Lift Station Elimination III F Dependent on Project 5.2
5.4 Sears Lift Station Replacement N F
5.5 Airport Lift Station Rehabilitation N F
6.1 Black River Interceptor N F
FRIORTTY G PRO iECTS
2.13 South Highlands Sewer Collection System Replacement 0
3.12 North Highlands Sewer Collection System Replacement G
5.6 West Renton Sewer Collection System Replacement G
4.8 Scenic Hills Sewer Collection System Replacement 0
- 4.9 Talbot Hill Sewer Collection System Replacement 0
6-27
r
•
CHAPTER SIX
TABLE VI-4: PROPOSED IMPROVEMENTS SUMMARY BY PROJECT TYPE
PROJECT PROPOSED CAPITAL IMPROVEMENTS QUARTILE PRIORITY COMMENTS
NUMBER
J.TFT STATION REPLACEMENT
2.3 Cottonwood Lift Station Replacement I A
3.1 Lake Washington No.2 Lift Station Replacement I A
5.4 Sears Lift Station Replacement N F
JIT STATION REHABILITATION
1.1 Devil's Elbow Lift Station Rehabilitation I A
4.5 East Valley Lift Station Rehabilitation N D
4.6 Lind Avenue Lift Station Rehabilitation N E
1.10 Misty Cove and Baxter Lift Station Rehabilitation N F
1.11 Denny's Lift Station Rehabilitation N F
5.5 Airport Lift Station Rehabilitation N F
J II'STATION ELIMINATION
3.4 Hlghgate Lift Station Elimination • II B Dependent on proposed development
2.9 Honeydew Lift Station Elimination II C Dependent on proposed development
4.3 Talbot Crest Lift Station Elimination III C
1.6 Sunset Lift Station Elimination I D Dependent on Projects 1.3 and 1.4
1.7 Devil's Elbow Lift Station Elimination II D Dependent on Projects 1.3 and 1.4
3.6 Azalea Lane Lift Station Elimination II D Dependent on Project 3.5 .r
3.9 Boeing Lift Station Elimination III E Dependent on Project 3.8
1.9 Summer Wind Lift Station Elimination lII F Dependent on Projects 1.3 and 1.8
2.10• Union 600 Lift Station Elimination III F Dependent on Project 2.1
2.11 Falcon Ridge Lift Station Elimination III F Dependent on proposed development
5.3 Earlington School Lift Station Elimination III F Dependent on Project 5.2
ptTSTTNO SANITARY SEWER REPLACEMENT
1.2 Devil's Elbow Force Main Repair • I A
2.2 Interim Moratorium Area Improvements I A '
2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) I A
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) II A Performed during I-405 work
2.7 Highlands Sewer Replacement,Phase III II B
3.3 Highlands Sewer Replacement,Phases I&II II B ,
4.2 Renton CBD Sewer Replacement,Phase 11(Logan/Williams) II B , -`
5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) II B
23 Central Renton Sewer Replacement,Phase II(Williams/Pelly) I C Dependent on Project 2.4
4.4 SW 34th Street Interceptor Replacement N D j .
2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) I[ E Dependent on Projects 2.4 and 23
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) III E
4.7 Talbot Road Interceptor Replacement N E
2.12 NE 7th Place Sewer Replacement N F
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) III. F
2.13 South Highlands Sewer Collection System Replacement 0 --
3.12 North Highlands Sewer Collection System Replacement 0
5.6 West Renton Sewer Collection System Replacement G
4.8 Scenic Hills Sewer Collection System Replacement 0 ,
4.9 Talbot Hill Sewer Collection System Replacement G
EIKIENEIZZEOLUZIOLAISEIMEI
1.3 May Valley Interceptor,Section 2 I A
2.1 East Renton Intercepter I A
3.2 West Kennydale Interceptor II A Project in progress
1.4 Honey Creek Interceptor,Phase N I B Dependent on Project 1.3
1.5 Sierra Heights Sewer System Construction I B Dependent on Projects 1.1 and 1.2
2.8 South Highlands Interbasin Transfer II B
3.5 East Keanydale Interceptor II C Dependent on other City improvements ,
3.7 Kennydale Lakefront Sewer System Study III C
3.8 Park Avenue Interceptor III C
1.8 May Valley Interceptor,Section 3 III F Dependent on Projects 1.3 and 1.8
5.2 Renton Avenue Intercepts N F 1
6.1 ,Black River Interceptor N F '
MISCELLANEOUS IMPROVEMENTS -
7.1 Telemetry and Data Logging System Replacement II B
7.2 Infiltration and Inflow Testing and Monitoring Annual
7.3 Existing Sewer Grouting Annual i
7.4 Miscellaneous Sewer Replacement Annual
6-28 '
,
Conclusions and Improvements
F. PROPOSED CAPITAL IMPROVEMENT PLAN SCHEDULE AND CASH FLOW
TABLE VI-5A - 5B provides an implementation schedule and a cash flow analysis for each
proposed improvement. TABLE VI-6A - 6B provides an estimate of the funding from various
revenue sources. These sources included the following:
City of Renton
Local Impro'ement Districts (LID)
Grants
Developers
METRO
Other
.
6-29
,
•
TABLE VI-SA: COST BREAKSOWN FOR PROPOSED IMPROVEMENTS
PROJECT PROPOSED CAPITAL IMPROVEMENTS CARRY 1991 . 1992 1993 1994 1995 1996-2010
NUMBER FORWARD Note: Project cost estimates are in 1990 dollars. TOTALS 'V
Ill
MAY CREEK BASIN ko
1.1 Devil's Elbow Lift Station Rehabilitation $167,000 $167,000 0.4
1.2 Devil's Elbow Force Main Repair $75,000 $75,000
1.3 May Valley Interceptor,Section 2 $268,000 $590,000 $590.000 $1,448,000
1.4 Honey Creek Interceptor,Phase IV $100,000 $845,000 $945,000
1.5 Sierra Heights Sewer System Construction $100,000 $500,000 $1,320,000 $1,920,000
1.6 Sunset Lift Station Elimination $10,000 $40,000 $50,000
1.7 Devil's Elbow Lift Station Elimination $10,000 $40,000 $50,000
1.8 May Valley Interceptor.Section 3 $500,000 $3,000,000 $3,500,000
1.9 Summer Wind Lift Station Elimination . $500,000 $500,000
1.10 Misty Cove and Baxter Lift Station Rehabilitation $450,000 $450,000
1.11 Denny's Lift Station Rehabilitation $70,000 $70,000
J.OWFR CEDAR RIVER BASIN
2.1 East Renton Interceptor $350,000 $1.445,000 $3,000,000 $4,445,000
2.2 Interim Moratorium Area Improvements $132,000 $332,000 $332,000
2.3 Cottonwood Lift Station Replacement $272,000 $272;000 $272,000
2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) $70,000 $200,000 $270,000
r 2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) $50,000 $150,000 $200,000
O 2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) $50,000 $150,000 $200,000
2.7 Highlands Sewer Replacement,Phase III $20,000 $31,000 $51,000
2.8 South Highlands Interbasin Transfer $300,000 $300,000
2.9 Honeydew Lift Station Elimination $20,000 $50,000 $200,000 $300,000 $570,000
2.10 Union 600 Lift Station Elimination $180,000 $180,000
2.11 Falcon Ridge Lift Station Elimination $700,000 $700,000
2.12 NB 7th Place Sewer Replacement $110,000 $110,000
2.13 South Highlands Sewer Collection System Replacement $6,800,000 $6,800,000
JAKE WASHINGTON FAST BASIN
3.1 Lake Washington No.2 Lift Station Replacement $250,000 $250,000
3.2 West Kennydale Interceptor $450,000 $420,500 $420,500
33 Highlands Sewer Replacement,Phases I&II $460,000 $460,000 $460,000
3.4 Highgate Lift Station Elimination $25,000 $200,000 $225,000
3.5 East Kermydale Interceptor $50,000 $200,000 $500,000 $750,000 •
3.6 Azalea Lane Lift Station Elimination $10,000 $40,000 $50,000
3.7 Kermydale Lakefront.Sewer System Study $25,000 $25,000 $50,000
3.8 Park Avenue Interceptor $63,643 $110,000 $390,000 $500,000
3.9 Boeing Lift Station Elimination $50,000 $50,000
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) $97,000 $25,000 $225,000 $250,000
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) $300,000 $300,000
3.12 North Highlands Sewer Collection System Replacement $5,800,000 $5,800,000
•
•
TABLE VI-5B: COST BREAKSOWN FOR PROPOSED IMPROVEMENTS
PROJECT PROPOSED CAPITAL IMPROVEMENTS CARRY 1991 1992 1993 1994 1995 1996-2010
NUMBER FORWARD Note: Project cost estimates are in 1990 dollars. TOTALS
BLACK RIVER BASIN
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) $121,000 $121.000 $121.000
4.2 Renton CBD Sewer Replacement,Phase II(Logan/Williams) $50,000 $210,000 $260,000
4.3 Talbot Crest Lift Station Elimination $50,000 $150,000 $150,000 $350,000
4.4 SW 34th Street Interceptor Replacement $75,000 $375,000 $450,000
4.5 East Valley Lift Station Rehabilitation $25,000 $75,000 $100.000
4.6 Lind Avenue Lift Station Rehabilitation $20,000 $20,000
4.7 Talbot Road Interceptor Replacement $100,000 $650,000 $750,000
4.8 Scenic Hills Sewer Collection System Replacement $3,630,000 $3,630,000
4.9 Talbot Hill Sewer Collection System Replacement $4,120,000 $4.120,000
JAKE WASHINGTON WEST BASIN(
U.) 5.1 Renton CDD Sewer Replacement,Phase III(S.4th Street) $30,000 $154,000 $184,000
5.2 Renton Avenue Interceptor $1,500,000 $1,500,000
5.3 Harlington School Lift Station Elimination $50,000 $50,000
5.4 Sears Lift Station Replacement $350,000 $350,000
55 Airport Lift Station Rehabilitation $20,000 $20,000
5.6 West Renton Sewer Collection System Replacement $3,300,000 $3,300,000
JIUWAMISH ESTUARY BASIN
6.1 IBlack River Interceptor $1,320,000 $1,320,000
SYSTEM WIDE IMPROVEMENTS
7.1 Telemetry and Data Logging System Replacement $50,000 $250,000 $150,000 $150,000 $75,000 $675,000
7.2 Infiltration and Inflow Testing and Monitoring $80,000 $80,000 $80,000 $80,000 $80,000 $80,000 $1,200,000 $1,600,000 on
7.3 Existing Sewer Grouting $100,000 $100,000 $100,000 $100,000 $100,000 $1,500,000 $2,000,000 g
7.4 Miscellaneous Sewer Replacement' $200,000 $200,000 $200,000 $200,000 $200,000 $4,500,000 $5,500,000
8.
TOTAL CR COSTS PER YEAR $2,025,643 $3,800,500 $5,305,000 $3,465,000 $2,945,000 $2,695,000 $40,800,000 $59,010,500
CITY ESTIMATED SHARE OF CIP COSTS $2 464 477 $3,278 781 $2 085 707 $1 469 137 $1709 138 $34 063 500 $45,070,740 p.
co
•
TABLE VI-6A: FUNDING SOURCES FOR PROPOSED IMPROVEMENTS
PROJECT PROPOSED CAPITAL IMPROVEMENTS CITY LID GRANTS DEVELOPERS METRO OTHER TOTALS
NUMBER SHARE Note: Project cost estimates are In 1990 dollars. y
MAY CREEK BASIN PO
1.1 Devil's Elbow Lift Station Rehabilitation $100,000 $67,000 $167,000 Col
12 Devil's Elbow Force Main Repair $50,000 $25,000 $75,000 'k
1.3 May Valley Interceptor,Section 2 $434,400 $579,200 $434,400 $1,448,000
1.4 Honey Creek Interceptor,Phase IV $567,000 $378,000 $945,000
1.5 Sierra Heights Sewer System Construction $600,000 $600,000 $720,000 $1,920,000
1.6 Sunset Lift Station Elimination $50,000 $50,000
1.7 Devil's Elbow Lift Station Elimination $50,000 $50,000
1.8 May Valley Interceptor,Section 3 $1,050,000 $1,400,000 $1,050,000 $3,500,000
1.9 Summer Wind Lift Station Elimination $125,000 $375,000 $500,000
1.10 Misty Cove and Baxter Lift Station Rehabilitation $337,500 $112,500 $450,000
1.11 Denny's Lift Station Rehabilitation $70,000 $70,000
J.OWER CEDAR RIVER BASIN
2.1 East Renton Interceptor $2,500,000 $1,500,000 $445,000 $4,445,000
2.2 Interim Moratorium Area Improvements $132,000 $200,000 $332,000
2.3 Cottonwood Lift Station Replacement $272,000 $272,000
2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) $270,000 $270.000
W, 2.5' Central Renton Sewer Replacement,Phase II(Wm
illias/Pelly) $200,000 $200,000
t%.1 2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) $200,000 $200,000
2.7 Highlands Sewer Replacement,Phase III $51,000 $51,000
2.8 South Highlands Interbasin Transfer $150,000 $150,000 $300,000
2.9 Honeydew Lift Station Elimination $114,000 $456,000 $570,000
2.10 Union 600 Lift Station Elimination $36,000 $144,000 $180,000
2.11 Falcon Ridge Lift Station Elimination $200,000 ' $500,000 $700,000
2.12 NE 7th Place Sewer Replacement $55,000 $55,000 $110,000
2.13 South Highlands Sewer Collection System Replacement $6,800,000 $6,800,000
JAKE WASHINGTON EAST BASIN]
3.1 Lake Washington No.2 Lift Station Replacement $250,000 $250,000
3.2 West Kennydale Interceptor $315,375 $105,125 $420,500
33 Highlands Sewer Replacement,Phases I&II $460,000 $460,000
3.4 Highgate Lift Station Elimination $112500 $112,500 $225,000
33 East Kennydale Interceptor $750,000 $750,000
3.6 Azalea Lane Lift Station Elimination $50,000 $50,000
3.7. Kennydale Lakefront Sewer System Study $50,000 $50,000
3.8 Park Avenue Interceptor s $500,000 $500,000
3.9 Boeing Lift Station Elimination $50,000 $50,000
3.10 Noah Renton Sewer Replacement,Phase I(Wells/Park) $250,000 $250,000
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) $300,000 $300,000
3.12 North Highlands Sewer Collection System Replacement $5,800,000 $5,800,000
•
TABLE VI-6B: FUNDING SOURCES FOR PROPOSED IMPROVEMENTS
PROJECT PROPOSED CAPITAL IMPROVEMENTS CITY LID GRANTS DEVELOPERS METRO OTHER TOTALS
NUMBER SHARE Note: Project cost estimates are In 1990 dollars.
BLACK RIVER BASIN
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) $121,000 $121,000
4.2 Renton CBD Sewer Replacement.Phase II(Logan/Williams) $260,000 $260,000
4.3 Talbot Crest Lift Station Elimination $250,000 $100,000 $350,000
4.4 SW 34th Street Interceptor Replacement $450,000 $450,000
4.5 East Valley Lift Station Rehabilitation $100,000 $100,000
4.6 Lind Avenue Lift Station Rehabilitation $20,000 $20,000
4.7 Talbot Road Interceptor Replacement $300,000 $450,000 $750,000
4.8 Scenic Hills Sewer Collection System Replacement $3,630,000 $3,630,000
4.9 Talbot Hill Sewer Collection System Replacement $4,120,000 $4,120,000
O, LAKE.WASHINGTON WEST BASIN
W 5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) $184,000 $184,000
LA.) 5.2 Renton Avenue Interceptor $750,000 $750,000 $1,500,000
• 53 Earlington School Lift Station Elimination $50,000 $50,000
5.4 Sears Lift Station Replacement $350,000 $350,000
5.5 Airport Lift Station Rehabilitation $20,000 $20,000
5.6 West Renton Sewer Collection System Replacement $3,300,000 $3,300,000
PUWAMISH ESTUARY BASIN
6.1 'Black River Interceptor $660,000 $660,000 $1,320,000
SYSTEM WIDE IMPROVEMENTS
7.1 Telemetry and Data Logging System Replacement $675,000 $675,000
7.2 Infiltration and Inflow Testing and Monitoring $1,600,000 $1,600,000 on
73 Existing Sewer Grouting $2,000,000 $2,000,000 n
7.4 Miscellaneous Sewer Replacement $5,500,000 $5,500,000
TOTAL CIP COSTS PER FUNDING SOURCE $45,060,775 $2,110,000 $600,000 $6,385,000 $1,979,200 $2,875,525 $59,010,500 a
k
b
N
0
et
g
EZ
CHAPTER SIX
INSERT FIGURE 8
•
6-34
CHAPTER VII
OPERATION AND MAINTENANCE
CHAPTER VII
OPERATION AND MAINTENANCE
A. SANITARY SEWER SYSTEM OPERATION
A comprehensive maintenance program'allows the City to optimize its use of the existing
collection system and pumping facilities, thereby extracting the maximum life and capacity of
each facility. This permits the same facilities to accommodate greater flow rates and more
r system connections while minimizing construction of new facilities. A properly maintained
Li{
facility is less likely to fail. This reduces the operating costs of the utility because of lower
damage compensation costs and overtime costs for maintenance personnel. It also protects the
environment and the public health by minimizing sewage overflows.
B. CURRENT OPERATION AND MAINTENANCE PROGRAM
The current operation and maintenance program for the sewer utility is discussed in this chapter.
The operation and maintenance program consists of four elements:
Normal Operations
r Emergency Operations
Preventive Maintenance
Staffing
1. NORMAL OPERATIONS
Normal operation of the sanitary sewer.utility is a combination of interaction between the •
Wastewater Utility Section (located in City Hall) and the Operation and Maintenance Division
(located in the City Shop Facility).
a. ORGANIZATIONAL STRUCTURE
The sewer utility operates under the direction of the Administrator of Planning, Building and
Public Works, Ms. Lynn Guttmann. The Sanitary Sewer Operation and Maintenance Division is
supervised by Mr. Gary Morrison who reports to the Field Maintenance Supervisor, Mr. Jack
Crumley. The Wastewater Utility Section is supervised by Mr. Randall Parsons who reports to
the Utility Systems Division Manager, Mr. Richard Anderson. Mr. Jack Crumley and Mr.
Richard Anderson report to Ms. Lynn Guttmann.
The certifications based on successful completion of training courses and examinations held by
the Operation and Maintenance and Engineering staff are listed in Table VII-1.
Training consists of special courses and seminars specifically designed for the requirements of
sanitary sewer utility employees. The training is offered through such organizations as the APWA
7-1
CHAPTER SEVEN
TABLE VII-1: CITY PERSONNEL AND CERTIFICATION
OPERATION AND MAINTENANCE PERSONNEL
PERSONNEL POSITION CERTIFICATION RESPONSIBILITIES
Gary Morrison Supervisor Wastewater Collection III Oversees and manages sanitary sewer
system operation and maintenance.
Ralph Nelmeyer Foreman Wastewater Collection I Coordinates maintenance work.
•
Oscar Cantu Maint.Worker III Wastewater Collection I Maintenance worker. Primarily
responsible for lift stations.
Don Jacob Maint.Worker III Wastewater Collection I Sanitary sewer maintenance worker.
Malcolm Thompson Maim.Worker III Wastewater Collection I Sanitary sewer maintenance worker.
Steve Pielak Maint.Worker III Wastewater Collection I Sanitary sewer maintenance worker.
Ron Shaffer Maint.Worker III Wastewater Collection I Sanitary sewer maintenance worker.
WASTEWATER UTILITY SECTION PERSONNEL
PERSONNEL POSITION CERTIFICATION RESPONSIBILITIES•
Randall Parsons Stormwater and Professional Engineer Evenly divides his time between managing
Wastewater Utility projects in the Stormwater and Wastewater
Section Supervisor Utility Sections.
Dave Christensen Wastewater Civil Engineer II Manages capital improvement projects
Engineer and reviews City and private sanitary
sewer system additions.
Mike Benoit Wastewater Engineering Specialist II Assists in managing CIP and the
Engineer Comprehennsive Sewer Plan Update.
Administers agreements,side sewer
permits and provides public information.
Dave Jennings Stormwater Civil Engineer II Manages the Infiltration and Inflow
Engineer Engineer-in-Training Program for the Wastewater Utility
for about 10 percent of his time(other
90 percent of his time is spent with his
regular duties in the stormwater utility).
7-2
Operations and Maintenance
(local section) various trade organizations, local colleges and universities; Seattle-King County
Health Departments, other sewer utilities, and by industrial training specialists. Renton's policy
of supporting and promoting operator training should be continued.
As the complexity of the system increases and as the service area expands, the need for trained,
efficient staff to keep pace with public demand and advances in technology will become
imperative. New employees need orientation and basic information while more experienced
employees can improve by continued training.
Training opportunities are of such importance to effectively operating the system that Renton has
linked them to its overall personnel evaluation program. Employees are evaluated and promoted
through a set of job categories that are increasingly well paid. It is essential that the promotional
program continue to be closely linked with the training program, not only because it promotes
efficient operation, but because mandatory certification of wastewater utility workers is required
by the state. Qualifications and training requirements for obtaining and maintaining certification
are stipulated by the State Department of Health. The City Council and Administration have
approved expenditures for increased training with the result that improved proficiency levels have
occurred in the last five years.
b. COMMUNICATION
Efficient and economical functioning of a team requires adequate provision for regular, effective
communication among its members. The normal channels of communication available to
maintain effective coordination are:
Vehicular two-way radios
Regularly kept work logs
Regular inspection reports
Daily work assignment meetings
Inventory and other record keeping practices
Emergency phone numbers for "on-call" employees
Direct, City owned telephone connection to City Hall
Weekly staff meetings
The sewer utility does not have a comprehensive system operation manual; however, lift station
facility operation and maintenance manuals are available for staff reference. City staff have
maintained the policy of requiring complete operation and maintenance manuals for all new
equipment and facilities. In addition, we recommend that a system wide Operations and
Maintenance manual, including emergency response procedures, be prepared and updated on a
regular basis.
7-3
CHAPTER SEVEN
c. EQUIPMENT AVAILABILITY
Sewer maintenance staff is equipped primarily with rented equipment. The equipment available
for daily use includes rolling stock, shop tools and incidental equipment as well as other portable
equipment for field use. The vehicles and other rolling stock are listed in Table VII-2 with a
description of their primary use in the department. A description of each vehicle and its uses
is presented below.
The existing inventory appears adequate at current staffing levels but should increase in
proportion to customer increases. The City should examine the backup capabilities of the.
inventory, based on critical equipment or facility failure, and make provisions for additional
material procurement on a short notice basis where necessary.
TABLE VII-2: SANITARY SEWER DEPARTMENT EQUIPMENT(1989)
ROLLING STOCK
Vehicle# Year Vehicle Description
C-75 1976 Utility TV inspection unit
D-58 1987 Lift station utility truck
D-51 1987 Manhole and line service truck
E-71 1986 Aquatech high velocity sewer jet
and vacuum unit
S-91 1976 Mechanical rodding
`. i
OTHER EQUIPMENT
Amount Equipment Description
4 Wacker compactors •
1 3-inch trash pump
4 Trash diaphragm pumps
1 Chainsaw
1 Set of emergency lighting
1 Emergency generator
•
•
7-4
•
Operations and Maintenance
UTILITIES T.V. INSPECTION UNIT
EQUIPMENT #C-75 •
This unit is a closed-circuit T.V. system used for inspecting underground utility lines,
primarily sanitary sewer and storm drain lines. It is fully self-contained with a generator,
compressor, and water supply. Its primary use is to determine conditions of existing lines
and any repairs or replacement necessary. The T.V. van is an important part of the
'- maintenance program to help determine priority areas that require further attention and
maintenance.
LIFT STATION UTILITY TRUCK
EQUIPMENT #D-58
I .
This vehicle is used by the lift station crew for inspection, maintenance and repair of
sewer pump stations. It is equipped with a crane used for lifting pumps and equipment
as needed, and utility compartments for parts, tools, etc: This vehicle is also used to
•
transport the mechanical rodding machine and to assist with other maintenance procedures •
as needed.
MANHOLE AND.LINE SERVICE TRUCK
EQUIPMENT #D-51
This vehicle is used by the line crew for inspection and repair of manholes and lines. It
is equipped with a crane hoist for lifting and setting manhole rings and equipment used
in repair work. It carries parts used in sewer line repair such as couplings, fittings, plugs,
etc. It is also equipped with an auxiliary hydraulic power unit that operates jackhammers,
compactors, and pumps making this vehicle self-contained for exposing and excavation
procedures.
AQUATECH HIGH VELOCITY SEWER JET AND VACUUM UNIT EQUIPMENT
EQUIPMENT #E-71
The Aquatech has a wide variety of uses in the utility maintenance programs. It is
primarily used to clean sewer lines and remove solid debris (i.e.,rocks, silt, dirt) from the
lines that could create flow restrictions and blockages. There are a number of lines in the
City, primarily in the downtown area, that have inconsistent grades creating septic
conditions within the lines. A part of the maintenance program is to use the Aquatech
to flush water through these particular lines periodically to prevent those conditions from
occurring. The Aquatech is the primary equipment used for emergency blockages in the
lines and is used to assist T.V. inspection by setting cables.
7-5
CHAPTER SEVEN
MECHANICAL RODDING MACHINE
EQUIPMENT #S-91
The mechanical rodder is used to remove roots and grease that accumulate within sewer
lines creating flow restrictions and blockages. Numerous lines throughout the City have
been examined and discovered to have had a history of problems created by roots and
grease. These particular lines are rodded periodically to ensure there is no interruption
of flow.
d. ROUTINE OPERATIONS
Routine operations involve the analysis,formulation, and implementation of procedures to ensure
that the sanitary sewer facilities are functioning efficiently. The utility's maintenance procedures
are good, with repairs being made promptly so customers do not experience unnecessary
inconvenience.
Side sewer maintenance can be a major problem within a sanitary sewer system. Side sewers
are owned and should be maintained by the individual property owners. City policy is that
individual property owners are responsible for maintaining their side sewers. If a problem
occurs, the property owner is to contact a private plumber to investigate and correct the problem.
If the property owner can show that the problem is within the publicly owned sewer main, then
the City will correct the problem and reimburse theproperty owner for expenses incurred
e. RECORDS
Providing time for keeping and maintaining accurate records should be an integral consideration
in determining the time to be allotted to any departmental task. Adequate records are an essential
tool in utility management and operation,providing the supporting data for operations assessment
and long-term planning, while saving time and reducing difficulty when trouble arises.
The sewer utility has need for several types of records: facility operation, records, personnel,
customer contact, inventory, and facility maintenance and repair. These and other appropriate
documents should be legible, concise, permanent, accurate and accessible. Their importance to
the efficient functioning of the utility is critical.
Up-to-date maps of the sanitary sewer system are important for operation and maintenance. •
Changes or additions to the sanitary sewer system should be added as they occur. The City
maintains an updated 1"= 400' scale map of the sanitary sewer system that is useful to the --
operations and maintenance staff. These utility maps show the sanitary sewer size and location,
manhole location and number, cleanout location, and lift station and force main locations. As-
built drawings of much of the existing sanitary sewer system are kept on file in the Utility
7-6
Operations and Maintenance
Systems Division at City Hall. This information is useful in helping the operation and
maintenance staff to locate sanitary sewer lines and service connections from these drawings.
Plat maps or construction drawings for new sanitary sewer extensions within the distribution
system should continue to be kept for the sanitary sewer system.
C. EMERGENCY OPERATIONS
The City responds to emergencies involving the sanitary sewer system through the use of on-call
personnel. The Sanitary Sewer Department does not have an emergency response plan that
identifies how Renton should react to an emergency. It is recommended that the City prepare
{ an emergency response plan for the sewer utility. This plan should include the functions and
responsibilities of personnel, procedures to be followed, maps of each facility, contact lists, and
r communication procedures. The emergency response procedures should be available both in
report form and through a computer program prepared specifically for that purpose. The
emergency response plan should be updated every two years.
D. PREVENTIVE MAINTENANCE
Maintenance schedules that meet or exceed manufacturer's recommendations should be
established for all critical components in the sanitary sewer system. The following schedule
should be used as a minimum for preventive maintenance:
Sewage Lift Stations
Daily: Observe and record motor current draw; check
packing; log and record pump motor hours; check
motor noise, temperature, vibration.
Weekly: Check security.
Semiannually: Change motor oil.
As Needed: Recoat structures and piping; maintain electrical and
hydraulic controls.
Wet Well Facilities
Weekly: Check security: Check float settings.
Annually: Check interior condition,ladder,hatches,etc.,in wet
well.
As Needed: Recoat interior as needed in wet well (estimated 10
to 15 year frequency).
Sanitary Sewer System
Twice Per Week: Check inspection manholes for flow reduction.
Clean lines when flow in sewers is reduced.
Semiannually: Cut roots in sewers with root problems.
7-7
CHAPTER SEVEN
Tools & Equipment
1. Rolling Stock
Daily: Check all fluid levels and brakes.
As Needed: Replace fluids and filters in accordance with
manufacturer's recommendations (or more
frequently depending on type of use).
2. Tools
As Needed: Clean after each use; lubricate and maintain as
necessary.
E. STAFFING
The preventive maintenance procedures and normal as well as emergency operations of the utility
are described in the previous sections. The hours of labor and supervisory activity required to
effectively carry out the work of these on-going maintenance and operations schedules and
engineering responsibilities form the basis for determining adequate staffing levels.
1. MAINTENANCE AND OPERATIONS STAFF
The current staff organization is illustrated in Table VII-1. There are at present seven employees,
including supervisory personnel and maintenance workers, who operate and maintain the sanitary
sewer system. The tasks that are performed by sewer utility staff include inspection, testing,
installation and repair of system facilities and routine preventive maintenance, record keeping,
administrative tasks, and corrective action required in response to emergencies. •
The hours of work required to adequately maintain the sanitary sewer system are shown in Table
VII-3. For preventive maintenance alone, the annual hours total 3,589, or 69 crew hours per
week. This requires nearly 2 crew members working full time, i.e.,40 hours per week, excluding
vacation, sick leave, and all other tasks not related to preventive maintenance.
The hours of work required for operational tasks for the sanitary sewer system are shown in
Table VII-4. For operational tasks alone, the annual hours total 8,535, or 164 crew hours per
week. This requires more than 4 crew members working full time, i.e., 40 hours per week,
excluding vacation, sick leave, and all other tasks not related to operation of the sanitary sewer
system.,
The total operation and preventive maintenance time required is 12,124 hours per year, which
is equivalent to six people working full time, 40 hours per week.
7-8
Operations and Maintenance
If due consideration is given to the hours involved in vacation, holiday, illness, meetings,
training, on-the-job travel and startup time, then the total number of hours actually available for
performing the work of operation and maintenance diminishes to a level of approximately 1,662
hours per year per crew member. At this rate, a staff of eight full-time maintenance crew
members is necessary to accomplish preventive maintenance and normal operations activities and
respond to emergencies.
This analysis indicates that the Sanitary Sewer Operation and Maintenance Department is not
adequately staffed to regularly perform the" basic tasks required to provide minimum
recommended maintenance to the system. An expansion of the system requiring new service
connections and/or additional facilities, without enlargement of the staff, will result in increased
neglect of necessary maintenance. In_view of predicted population growth in the service area
over the next several years and the growing demand for sanitary sewer service, the need for
additional staffing will continue.
Many arguments support the wisdom of adequate staffing in any work place. The most
persuasive argument relevant to a complex sanitary sewer system is that short staffing cause
preventive maintenance schedules to be neglected. When routine,regular preventive maintenance
tasks are dropped, misfortune results, increasing both breakdown maintenance and excessive
reliance on expensive standby equipment required to resolve emergencies.
Regular performance of all necessary work, in the Sanitary Sewer Operation and Maintenance
Division, with the current number of service connections, will require additions to the present
maintenance crew. The expected increase in the number of service connections should serve as
further impetus to develop a staff of an adequate size to effectively operate and maintain the
system.
The size of the maintenance crew should be increased from six to eight personnel while keeping
the supervisor. This addition to the staff will be required before there are adequate crew hours
available to carry the full work load of the Utility without neglecting preventive maintenance,
emergency preparedness,or safety precautions. Maintenance and technical staff additions should
be accompanied by additions to the clerical, secretarial and other support staff needed to ensure
that record keeping, billing, public relations, communications and other general functions of
support staff are performed with the accuracy and timeliness required.
2. WASTEWATER UTILITY ENGINEERING STAFF
The current engineering staff organization is illustrated in Table VII-1. There are currently four
employees involved in utility engineering tasks; however, the Wastewater Utility section
supervisor works part-time in the stormwater utility. The engineering staff is responsible for two
major tasks, administrative and capital improvement projects.
7-9
CHAPTER SEVEN •
_Il
The various administrative tasks and the hours of work required are shown in Table VII-5. The
number of hours required for each task is not easily defined; therefore, work loads have been
estimated based on a full-time employee (N 1'h). Administrative tasks alone requires
approximately 2.0 FTE's. Therefore, it is evident that the administrative activities require a
major portion of the engineering staff resources.
Table VII-5 also shows the capital improvement projects which are currently under way within
the City. These five projects require approximately 0.8 F 1'E's. The total time required to
perform all the tasks that the City is currently performing is approximately 2.8 F1'E's, which
corresponds very closely to their current staffing level of 2.6 Nib's.
Most of the capital improvement projects identified in the 1983 Comprehensive Sewer Plan were __
not completed. The primary reason for the City's inability to carry out a capital improvement
program is not a lack of available funding but a past and current lack of engineering staff to
design or manage the projects. -
•
The level of staffing within the City's Wastewater Utility section may be the biggest obstacle to
the implementation of this plan. The proposed capital improvements require that approximately
14 to 16 projects are under way at any one time. Current staffing levels can only accommodate
approximately four capital improvement projects. In order to implement this plan, additional
staffing of approximately.2.5 FTE's will be required in order to accommodate 14 to 16 capital
improvement projects per year, beginning in 1991. Additional administrative tasks which are
recommended in this plan are (1) prepare new ordinances and revise existing ordinances, (2)
setup and administer grease trap management and certification ordinance, (3) inventory and
update hydraulic computer model, and (4) perform computer analyses using the sewer system
hydraulic model. These tasks will require additional staffing of approximately 0.5 F 1'E's. This
will bring the total additional staffing, requirements for both administrative tasks and capital
improvement projects up to 3.0 FTE's, bringing the total wastewater staffing level up to 5.5
N 1'E's. These additions will likely result in the section supervisor increasing supervision duties
and eliminating project managements duties.
7-10
; i
' I
Operations and Maintenance
TABLE VII-3: STAFFING TIME FOR PREVENTIVE MAINTENANCE
FACILITY OR FREQUENCY OF QUANTITY IN TIME REQUIRED
EQUIPMENT MAINTENANCE SYSTEM TIME PER UNIT PER YEAR
Lift Station Annually 22 Stations 16 Manhours 352 Hours
r Maintenance
fi
Sewage Pump and Annually 45 Pumps 8 Manhours 360 Hours
Motor Maintenance
Check Inspection Twice per Week 106 Manholes 10 Minutes 1837 Hours
Manholes
Root Cutting Semiannually 19200 LF 1500 LF/30 Mhours 768 Hours
Grease Removal Annually 5200 LF 1500 LF/30 Mhours 104 Hours
Line Flushing Once per Month 1 Set 14 Manhours 168 Hours
TOTAL PREVENTIVE MAINTENANCE 3589 Hours
TABLE VII-4: STAFFING TIME FOR OPERATION TASKS
TASK TIME PER TIME REQUIRED
ACTIVITY FREQUENCY ACTIVITY PER YEAR
Lift Station Inspection Daily 7 Mhours/Day 2555 Hours
Video Inspection Once per Week 30 Mhours/Week 1560 Hours
Work Logs Daily 10 Mhours/Day • 2600 Hours
Vehicle Inspection Daily 0.5 Mhours/Vehicle 650 Hours
Staff Meetings Daily 0.5 Mhours/Day 910 Hours
Tool and Once per Week 5 Mhours/Week 260 Hours
Equipment Cleaning
TOTAL FOR OPERATIONS 8535 Hours
Source: Gary Morrison
7-11
i '
CHAPTER SEVEN •
TABLE VII-5: WASTE WATER UTILITY ENGINEERING STAFF TIME
NUMBER OF
ENGINEERING TASKS EMPLOYEES
Section Supervison 0.20 FTE's
Latecomers Agreement Administration 0.20 FTE's
Sewer Moritorium Administration 0.30 FTE's
Plan Review Support 0.60 FTE's
Comprehensive Sewer Plan Update 0.20 FTE's
Customer Service Support 0.25 FTE's
Support to Other Divisions/Departments/Agencies 0.25 FTE's
TOTAL ADMINISTRATIVE TIME 2.00 FTE's
Major Capital Improvement Projects
East Renton Interceptor 0.20 FTE's
Minor Capital Improvement Progects
West Kennydale Interceptor 0.20 FTE's
Interim Sewer Improvements 0.10 FTE's
Lake Washington Sewer Improvements 0.10 FTE's
Park Avenue Interceptor 0.10 FTE's
Infiltration and Inflow Program 0.10 FTE's
TOTAL CIP TIME 0.80 FTE's
TOTAL ENGINEERING TIME 2.80 FTE's
FTE's=Full Time Employees
Source: Randall Parsons,Stormwater and Wastewater Utility Supervisor
7-12
CHAPTER VIII
FINANCIAL IMPACTS
CHAPTER VIII
FINANCIAL ANALYSIS
A. INTRODUCTION
This chapter considers the financial impacts that the Capital Improvement Plan (CIP),
recommended in Chapters 5 and 6, will have on the wastewater utility's budgeting process. The
proposed wastewater utility CIP consists of the rehabilitation, replacement and new construction
of sewer facilities that are necessary to meet the policy goals stated in Chapter 3, the design
standards and criteria presented in Chapter 4 and the service needs that will result from
anticipated growth.
This chapter also presents a financial analysis of the wastewater utility which identifies its
historical and projected future expenses and compares them to available and projected revenues
in order to determine the necessary rate adjustments.
A utility rate study that evaluated the operation of the 401 and 421 funds and made specific rate
recommendations was completed in November 1989 (Water and Wastewater Rates Managements
Analysis, RH2 Engineering P.S.). This rates management analysis was intended to guide rates
management for a period of two years while a reorganization of the Public Works Department
was taking place. During the first quarter of 1992, the financial models developed in the rates
management analysis should be updated so that recommended rates can be adjusted to accurately
reflect the current financial situation within the utility.
The utility's financial situation has also changed because of new state laws regarding how fees
and charges must be calculated (Substitute House Bill 2929), and because the City is taking steps
to adjust all of its rates, fees, and charges to meet its projected costs.
In this document two sets of numbers are used. Current 1990 dollars are used to project the costs
of operations, maintenance, and capital improvement programs. However, several factors may
affect the accuracy of those projections. The most significant factor is inflation. Although we
cannot predict the exact amount inflation will increase costs, we estimate it will raise them by
5% a year. Other factors that may affect future costs that we have not included in our cost
estimate are contractor availability, technological advances, and changes in laws and policies.
B. WASTEWATER UTILITY EXPENSES AND REVENUE REQUIREMENTS
There are four major expenses of the wastewater utility, which fall under two broad categories--
operating expenses and actual construction costs for CIP projects. Operating expenses include
costs for operations and maintenance and METRO charges. Actual construction costs include
the expenses for implementing the CIP and debt service costs. Inflation,defined as a general rise
- in prices, affects each of these expenses to a different degree. A summary of the major expenses
8-1
CHAPTER EIGHT
of the wastewater utility is shown on FIGURE 10. A more detailed breakdown of these costs
is shown on TABLE VIII-2A & 2B .
A detailed description of each expense is presented below. To determine the revenues needed
to meet each expense, one must forecast future levels of 1) inflation, 2) customer service
increases, 3) METRO rate increases, 4) the increases in operations and maintenance costs, 5) the
City's share of costs for financing the CIP, and 6) anticipated revenues from other sources to
finance the remaining portions of the CIP.
C. OPERATING COSTS AND REVENUES
All operating costs fall into two general categories: 1) The city's operations and maintenance
expenses (controlled by City's budget process) and 2) the METRO sewage treatment charges (no
direct control by the city). A summary of these costs is shown on FIGURES 10 and 11. It is -
evident from FIGURE 11 that the majority of the wastewater utility expenses are a direct result
of METRO changes.
1. Municipality of Metropolitan Seattle (METRO) Charges
METRO charges for wastewater treatment and disposal. As part of its service contract
with METRO, the City collects that charge from its customers through the utility billing
division and passes it on to METRO. METRO has increased its rates substantially and
will continue to do so to meet new treatment requirements. METRO treatment services
are forecast to increase at an average annual rate of 13%.
2. City of Renton Operations and Maintenance
a. Costs
The estimated costs to operate the wastewater utility include salary costs for the
operation, maintenance, engineering and'administration of services, taxes, office
supplies, debt service, and consulting fees.
For eighteen months the wastewater utility has been in transition because of the
Public Works Department's reorganization which separated the wastewater utility
from the water utility. As part of the reorganization, the number of staff and
additional staff positions for each utility were identified. For purposes of this
financial analysis,recommended staffing levels for operating the wastewater utility
were predicted to be reached within a five-year period in order to keep pace with
anticipated growth. Inflation for labor is estimated to be 5% annually, with an
additional 5% step increase applicable to 50% of the work force. Other expenses
are anticipated to increase at the estimated inflation rate of 5%.
8-2
•
• Financial Analysis
Ii
CITY'S REVENUE BREAKDOWN SUMMARY
FIGURE 9
s.
Revenue projection requirements based on proposed capital
improvements and operation and maintenance. •
2.28m
2.06M)iiii
0
1. SM
W '
S2
1S8M
1.13M
1
.' 0.98M 0.98M 0.99M " 1.00M 1.02M
096M '
i
1990 1991 1992 1993 1994 1995
YEAR
NEI City Operations 0 City Proposed CIP
•
•
8-3
1
CHAPTER EIGHT
, I
TOTAL REVENUE REQUIREMENT SUMMARY
FIGURE 10 ' 1
s10-/ I
Revenue requirements based on proposed
capital improvements,operation and maintenance,
and METRO revenue forecast.
2.28M
s8-f f'` '
2.06M
1.85M
ra-
56--0
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m...,111.0,:;Ami vy, w.:.. },u`: a:v;so #y((„�; .:Srr r:J4• ,/ :Nd :.,{f. h:.cai. I
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.:o}+�:na:.,:,%;,.: y •$f?..::iYyr;: ',:`.<p: ;,f;t,:::h.%::r .:.$•' w.,; . w"o :! % x .0•?.YA 44%; '�yi' 2,,e,',J;.:$y.}x. w.• f,'•� :;xEa;,:!"';L y;r$. $,S �' :�:`y,$�:•$>w}. 0'x'4` ..•r�:r '$, u.!, i,.:;:r.• t..,:}f,<� :.'•��6..; x.,,.;�,.ni�`,
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.Ne.: aftrii T. ,1�.;• :•';„6,!:•:;$';�.: --
_,y.:r,L.:t W. ....4..5:'
:%:- `x:g.v •K?r:! :� ! :*?%:y':•., }.r s.'' 1t r•^..`' ay.`':..' i''T >•.GC;r,!0. ...A:
,.
y. v:; �,M.*:?•t.r; '°:?f; ti°<2 f;}4.:: :v:.,,r hn:,''•"{`.'✓` 5? ::'f:J ;:t il?.::'#,,'r'.. •:•f;.•.! :;;' .:''., 0. ti+}•`1'.ii :$4W . -
.%•'.!2:'•';W:??: •: ;.,w3e$4.p•`,.$ }:}':• : / fK:?.:i.9'' •;R ;+ro•:y;.•$'ii:• t?. t?Fn$h'.;5; !JMn:V;;•e�C'P._ --
SO $r.�:',•• ..G::,.•:i.• /_ .o :_,c•._<••. E:!t>% rs++F.G.k'`_<•etrffrt:::t••:i[•• iC"`$.'
1990 r Y~y1991 1992 1993 1994 1995
YEAR
•
Ezm METRO Revenues rem City Operation I= City Proposed CIP •
i
TABLE VIII-1: PROJECTED SANITARY SEWER RATE INCREASES FOR A SINGLE-FAMILY
RESIDENCE BASED ON PROPOSED RECOMMENDATIONS IN THIS PLAN i
Year 1991 1992 1993 1994 1995
Projected City
Rate Increases 11.9% 18.1% 16.9% 9.5% 8.8% -
f
City Charges $7.70 •$9.09 $10.63 $11.64 $12.66
Projected METRO
Rate Increases 18.2% 12.9% 10.7% 10.0%
ii
METRO Charges • $13.20 $15.60 $17.62 $19.50 $21.45 • '
Total Projected
Rate Increase 18.2% 14.4% 10.2% 9.6%
Total Billings $20.90 $24.69 $28.25 $31.14 $34.11 I 1
•
8-4 �_%
I
•
Financial Analysis
CIP FINANCIAL ANALYSIS SUMMARY
FIGURE 11
Projected expenditures based on proposed
capital inprovement plan.
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:::::.:::.......
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i ::nom:::h???:4:4};:::•?: ::::.:�::::::::: n�::::.�::::::.
........:•::::::::•SSS:% .....` .., ::::. •, L..............::::..:a.�> 5,.:. S•�Y:i :ili
M....
:•.•::::::::n:•:::::::;: :::::::y::::::. 1113Costs
CIP
� 11
....................
x ;C'
$1
Current
.:::::::;.1.;:..:1:.1:•:.;.;<>
CIP Costs
:::.....:..:.........
Inflated City Share
•
• Current Ci re
$o
City Sha
1991 1992 1993 1994 1995
YEAR
"TABLE VIII-2: RMA AND COMPREHENSIVE PLAN CIP COST COMPARISON
CURRENT COSTS INFLATED COSTS
City's Share City's Share Total Project City's Share City's Share Total Project
of CIP Costs of CIP Costs Costs From of CIP Costs of CIP Costs Costs From
YEAR From RMA From This Plan This Plan From RMA From This Plan This Plan
1991 $1,991,900 $2,464,477 $3,800,500 $2,091,495 . $2,587,701 $3,990,525
1992 $3,278,897 $3,278,781 $5,305,000 $3,614,984 $3,614,856 $5,848,763 -
1993 $3,023,269 $2,085,707 $3,465,000 $3,499,736 $2,414,414 $4,011,084
1994 $2,335,049 $1,469,137 $2,945,000 $2,838,252 $1,785,736 $3,579,648
1995 Not Estimated $1,709.138 $2,695.000 Not Estimated $2.181.373 ' $3.439,629
RMA=Rates Management Study Inflated Dollars=Assume 5%annually
Current Costs= 1990 Dollars
8-5
•
•
b
TABLE VIII-3A: COST BREAKSOWN FOR PROPOSED IMPROVEMENTS tvi
)3
PROJECT PROPOSED CAPITAL IMPROVEMENTS CARRY ANNUAL CASH FLOW TOTAL
NUMBER FORWARD 1991 1992 1993 1994 1995 1996-2010 COST
PRIORITY A PROJECTS
1.1 Devil's Elbow Lift Station Rehabilitation $167,000 $167,000
1.2 Devil's Elbow Force Main Repair $75,000 $75,000
1.3 May Valley Interceptor,Section 2 $268,000 $590,000 $590,000 $1,448,000
2.1 East Renton Interceptor $350,000 $1,445,000 $3,000,000 $4,445,000
2.2 Interim Moratorium Area Improvements $132,000 $332,000 $332,000
2.3 Cottonwood Lift Station Replacement $272,000 $272,000 $272,000
2.4 Central Renton Sewer Replacement,Phase I(Pelly/Garden) $70,000 $200,000 a $270,000
3.1 Lake Washington No.2 Lift Station Replacement $250,000 $250,000
3.2 West Kennydale Interceptor $450,000 $420,500 $420,500
4.1 Renton CBD Sewer Replacement,Phase I(Mill Avenue) $121,000 $121,000 $121,000
PRIORITY B PRO.IECTS
po 1.4 Honey Creek Interceptor,Phase IV $100,000 $845,000 $945,000
ON 1.5 Sierra Heights Sewer System Constmction $100,000 $500,000 $1,320,000 $1,920,000
2.7 Highlands Sewer Replacement,Phase III $20,000 $31,000 $51,000
2.8 South Highlands Interbasin Transfer $300,000 $300,000
3.3 Highlands Sewer Replacement,Phases I&II $460,000 $460,000 $460,000
3.4 Highgate Lift Station Elimination $25,000 $200,000 $225,000
4.2 Renton CBD Sewer Replacement,Phase H(Logan/Williams) $50,000 $210,000 $260,000
5.1 Renton CBD Sewer Replacement,Phase III(S.4th Street) $30,000 $154,000 $184,000
7.1 Telemetry and Data Logging System Replacement $50,000 $250,000 $150,000 $150,000 $75,000 $675,000
PRIORITY C PROJECTS
2.5 Central Renton Sewer Replacement,Phase II(Williams/Pelly) $50,000 $150,000 $200,000
2.9 Honeydew Lift Station Elimination $20,000 $50,000 $200,000 $300,000 $570,000
3.5 East Kennydale Interceptor $50,000 $200,000 $500,000 $750,000
3.7 Kennydale Lakefront Sewer System Study $25,000 $25,000 $50,000
3.8 Park Avenue Interceptor $63,643 $110,000 $390,000 $500,000
4.3 Talbot Crest Lift Station Elimination $50,000 3150,000 $150,000 $350,000
NOTE: Project cost estimates are In 1990 dollars
TABLE VIH-3B: COST BREAKSOWN FOR PROPOSED IMPROVEMENTS
PROJECT PROPOSED CAPITAL IMPROVEMENTS CARRY ANNUAL CASH FLOW TOTAL
NUMBER FORWARD 1991 1992 1993 1994 1995 1996-2010 COST
PRIORITY D PROJECTS
1.6 Sunset Lift Station Elimination $10,000 $40,000 $50,000
1.7 Devil's Elbow Lift Station Elimination $10,000 $40,000 •$50,000
3.6 Azalea Lane Lift Station Elimination 310,000 $40,000 $50,000
4.4 SW 34th Street Interceptor Replacement 375,000 $375,000 $450,000
4.5 East Valley Lift Station Rehabilitation $25,000 $75,000 $100,000
. PRIORITY E PROJECTS
1.8 May Valley Interceptor,Section 3 $500,000 $3,000,000 $3,500,000
2.6 Central Renton Sewer Replacement,Phase III(Houser/Factory) $50,000 $150,000 $200,000
3.9 Boeing Lift Station Elimination $50,000 $50,000
3.10 North Renton Sewer Replacement,Phase I(Wells/Park) 397,000 $25,000 $225,000 $250,000
4.6 Lind Avenue Lift Station Rehabilitation $20,000 $20,000
4.7 Talbot Road Interceptor Replacement $100,000 $650,000 $750,000
PRIORITY F PROJECTS
1.9 Summer Wind Lift Station Elimination $500,000 $500,000
1.10 Misty Cove and Baxter Lift Station Rehabilitation $450,000 $450,000
1.11 Denny's Lift Station Rehabilitation $70,000 $70,000
00 2.10 Union 600 Lift Station Elimination $180,000 $180,000
J 2.11 Falcon Ridge Lift Station Elimination $700,000 $700,000
2.12 NE 7th Place Sewer Replacement $110,000 $110,000
3.11 North Renton Sewer Replacement,Phase II(Logan/Wells) $300,000 $300,000 =
5.2 Renton Avenue Interceptor $1,500,000 $1,500,000
5.3 Earlington School Lift Station Elimination •
$50,000 $50,000
5.4 Sears Lift Station Replacement $350,000 $350,000
5.5 Airport Lift Station Rehabilitation •
$20,000 $20,000
6.1 Black River Interceptor $1,320,000 $1,320,000
PRIORITY G PROJEC'T'S
2.13 South Highlands Sewer Collection System Replacement $6,800,000 $6,800,000
3.12 North Highlands Sewer Collection System Replacement 35,800,000 $5,800,000
5.6 • West Renton Sewer Collection System Replacement $3,300,000 $3,300,000
4.80 Scenic Hills Sewer Collection System Replacement $3,630,000 $3,630,000
4.9 Talbot Hill Sewer Collection System Replacement $4,120,000 $4,120,000
ANNUAL.PROJECTS '21
7.2 Infiltration and Inflow Testing and Monitoring $80,000 $80,000 $80,000 $80,000 $80,000 $80,000 $1,200,000 $1,600,000 Ej
7.3 Existing Sewer Grouting $100,000 $100,000 $100,000 $100,000 3100,000 $1,500,000 $2,000,000 n
7.4 Miscellaneous Sewer Replacement $200,000 $200,000 $200,000 $200,000 $200,000 $4,500,000 $5,500,000 ta
TOTAL CIP COSTS PER YEAR $2,025,643 $3,800,500 $5,305,000 $3,465,000 $2,945,000 $2,695,000 $40,800,000 $59,010,500 A
CITY ESTIMATED SHARE OF CIP COSTS $2,464,477 $3,278,781 $2,085,707 $1,469,137 $1,709,138 $34,063,500_$45,070,740 '4.
NOTE: Project cost estimates are in 1990 dollars
CHAPTER EIGHT
b. Revenue Requirements
For purposes of the financial analysis, the estimated revenue requirements for the
next five years (1991 to 1995) were based on the 1990 operating budget--which
reflects the new organization with additions for planned new services and
inflation. Customer service growth was assumed to occur at 2% per year, which
increases revenues from rate collection by 2%. The capital budgets were based
on the five-year CIP recommended in this Plan.
In addition to reflecting the new organization, the 1990 operating budget was used
as a base rather than actual historical expenditures, because the old organization's
cost allocations were imprecise and based on a time-reporting system which was
unreliable. The transition's effect, however, has not been completely reflected in
the currently available financial information and will not be completely reflected
until the City obtains the first nine months of 401 and 421 fund operations of
1991.
D. CIP COSTS AND REVENUES
1. Capital Improvement Plan Costs
ti
The recommended CIP presented in this Plan consists of improvements necessary to serve
the projected service area's population at saturation at the lowest reasonable cost.
Consequently, the CIP's recommendations are based on saturation conditions and will be
implemented as they are needed. The project costs listed here are intended for budgetary
purposes only, because they are based on current construction costs and should be
adjusted for actual inflation depending upon the actual construction date. The cost for the
recommended CIP in the City's budget process is shown in the annual budget in the 421
account.
The costs for all of the improvements have been estimated, based on current information
available. It should be reiterated that changes in system flow rates, system growth,
financial policies, and regulatory requirements all contribute to adjustments in long-range
planning. We recommend that financial goals be evaluated every five years, and that a
detailed cash flow analysis be conducted annually.
TABLES VIII- 2, 3A & 3B present the capital improvement program as recommended
in this Comprehensive Plan with its estimated costs. TABLE VIII-2 summarizes these
annual costs of the CIP program showing the total project cost (current and inflated
dollars) and the City's share of the program costs (current and inflated). TABLE VIII-2
also presents the City's share as estimated in the Rates Management Analysis
accomplished during 1989. FIGURE 12 graphically presents the information provided
8-8
Financial Analysis
in TABLE VIII-2.
•
TABLES VIII-3A& 3B show an annual breakdown for each capital improvement project
using current dollars. These estimates of funding responsibilities are based on the
financial policies presented in Chapter 3.
Debt service is a major cost of operating a wastewater utility. The majority of funding
. • for the CIP has historically been provided through revenue bond sales, which means the
utility borrows money from inventors while agreeing to repay those investors part of their
debt with interest each year. This debt service (principal and interest) is funded from the
401 account (Utility Operations and Maintenance) because the debt service is a high
priority lien on the revenues of the utility. Specific restrictions are contained in the bond
covenants which restrict financial procedures of the utility. For example, the wastewater
utility is required to set rates that must exceed its costs for operating and maintaining the
system, cover payment of the debt service and cover an additional specified percentage
of debt service.
2. Revenue Sources for CIP
•
a. City Share
In the financial analysis, the new debt service was calculated as the amount
necessary to fund the City's share of inflated CIP costs. The analysis also
indicates how this additional debt service affects the operating costs identified in
the Rates Management Analysis (RMA). That adjustment to the RMA will
determine the rate adjustments necessary to accomplish the CIP. Those costs will
be recovered from customers based on their specific degree of benefit and cost
responsibility.
The City's share of funding originates from three different sources; Revenue
Bonds, General Obligation Bonds and the Public Works Trust Fund. These
funding sources are discussed in detail below.
1) Revenue Bonds
Revenue bonds are issued and sold by the City when large amounts of
money are needed to build general purpose capital improvements that
benefit the City as a whole. The City, like other municipalities, is capable
of issuing tax-exempt bonds. The principal and interest payments for such
bonds are repaid from general revenues, connection charges, assessments
and interest earned on investments. In order to qualify to sell revenue
bonds, the City must show that its net operating income (gross income less
8-9
•
CHAPTER EIGHT
expenses) is equal to or greater than 1.3 times the annual principal and
interest due for all outstanding bonded indebtedness. The 1.3 factor is
commonly referred to as the "coverage factor".
2) General Obligation Bonds
The City has the authority to levy a tax (subject to a vote of the people)
that could be used to pay principal and interest costs of a general
obligation bond issue. The City has not used this means of revenue
generation for the wastewater utility and does not plan to unless a serious
disaster occurs that requires massive improvements and/or replacements
beyond the City's ability to fund it through other sources.
3) Public Works Trust Fund Loans
Low-interest rate loans are available from the state for replacement of
existing sewer system facilities. Interest rates vary from a low of 1% to
a high of 3% depending upon the City's matching share. It is emphasized
that these low interest rate loans are for replacements only and can not be
used for accommodating growth. These loans can be utilized effectively
for replacements in the Central Business District (CBD) and other fully
developed areas of the City.
b. Other Revenue Sources For CIP
This section presents the anticipated funding for the CIP from sources other than
rates revenue. Five funding sources are identified and these are discussed in more
detail below.
1) Grants
Federal and state loan and grant programs are available for wastewater
capital improvement projects. These programs are primarily designed to
fund improvements that upgrade wastewater treatment facilities in order to
comply with Federal Clean Water Act (PL92-500). With budget cutbacks
• at both the federal and state level, the possibility of receiving government
funding for a portion of the recommended improvements at this time is
remote. Should additional funds be made available, the City should
explore the feasibility of obtaining funds from these sources.
8-10
r ,
Financial Analysis
The Centennial Clean Water Fund is an example of state grant funding
which is currently available. This grant fund's highest priority is to
eliminate public health emergencies and secondly, to improve water
quality. The City should continue to pursue these funds.
2) Municipality of Metropolitan Seattle (METRO)
METRO funds are available for the construction of interceptors and local
service extensions if the investment can be justified. Currently METRO
limits its investment to projects where the amortized capital cost of the
project can be recovered through METRO fees collected from the
residential customer, or equivalent, that are served by the extension at the
time of project completion. Based on this policy, METRO could construct
the May Valley Interceptor and other improvements.
3) LID (Local Improvement District) Assessments
LID assessment income is paid to the City from assessments levied against
specific properties which have benefitted from improvements in a defined
area. Typically, Local Improvements District's (LIDs) are formed by the
City at the written request (by petition) of property owners within a
specific area of the City. Upon receipt of a sufficient number of signatures
on petitions, a local improvements area is defined and improvements are
• designed for it. Each separate property in the LID is assessed in
accordance with the special benefits the property receives from the sewer
system improvements. Generally, it is the policy of the City to assess the
benefitted properties 100 percent of the cost of the improvements plus the
general facilities and sewer connection charges.
LID projects may be divided into two categories.
a) Improvements of Local Interest
If necessary, specific problems, such as excessive septic tank
failures, can be corrected through an LID. If not necessary, these
projects can be postponed until a later date when the area needs or
desires it.
8-11
CHAPTER EIGHT
b) Improvements of Regional Interest
i
These project are beneficial to an area larger than an LID and are
initiated by the City. While LID funding would help, the project
is of such importance that a lack of LID should not delay it. If an
LID cannotbe formed, additional funding from other sources
(including the City) may be necessary.
4) Developers
City policy requires that all developers/property owners take financial
responsibility for the necessary improvements before their development
benefits from them. This responsibility may be satisfied in one of the
following ways. In all cases, developer/property owners should be
required to pay for the costs to the extent their property benefits from the
facility installed (their fair share).
a. If the utilities necessary are already installed, the
developer/property owner will reimburse the party (city or
private) that installed the facility through a latecomer
agreement or special assessment district.
b. If the utilities necessary are not installed, then the
developer/property owner must extend or make
improvements to the facilities following routes.that comply
with the City's Comprehensive Sewer Plan. If the Plan is
not definitive for that area, then the facilities will be
extended and installed in a manner that best serves the City
of Renton's citizens as determined by the utility system
manager.
If the facilities installed potentially benefit other properties, a latecomers
agreement may be requested. If the facility, required by the City is
determined by City Council to be significantly more expensive because of
oversizing or routing requirements, then the Council may agree that the
City participate. •
If a City capital improvement project is being planned, designed or
constructed, developer/property owners could choose to participate
financially in the City's project rather than make the improvements
themselves.
5) Other
8-12
Financial Analysis
This category of funding responsibility is primarily for participation by
other municipalities, such as adjacent cities or districts. Negotiations need
to be accomplished to finalize funding responsibilities before annual
adjustments to the CIP and rate increases.
c. Contingency Revenue Plan
If the funding from other sources does not happen as anticipated, or on the
schedule anticipated, then the City should adjust this Plan's CIP. Alternative
adjustments available to the City are as follows:
Reduce the scope and magnitude of the improvements with corresponding
reductions in cost,
Defer that portion of the improvements necessary for the benefit of others
until the funding is obtained,
Proceed with the CIP as recommended in this Plan and finance the other
beneficiary's share with the provision that these other costs should be
recovered including interest costs.
It is critical to implementation of the CIP that these funds be obtained from other
funding sources. The level of funding from other sources is based on the current
perceived degree of benefit from each project; this may change based on the
actual degree of benefit assessed at the time the project is planned to begin.
11
E. FINANCIAL ANALYSIS
The City has control of only approximately 40% of the total wastewater utility budget; METRO
charges are responsible for approximately 60% of the total budget. The City's major source of .
revenue is from sewer collection charges from its customers. Theses charges provide the
necessary revenue for the operation and maintenance of existing sewer facilities and for the
City's share of the CIP. The financial analysis summarized in TABLE VIII-1 (page 8-4)
illustrates that the City must raise its sewer collection charges by 64.4% over the next four years.
This is equivalent to an average annual rate increase of approximately 13.2% per year. However,
the same financial analysis also illustrates that these rate increases are not uniform but require
a greater percentage increase in 1992 (18.1%) then taper off to a smaller percentage increase in
1995 (8.8%).
The rate increases depend on several factors which can change. These factors are summarized
below:
8-13 •
CHAPTER EIGHT
1. The customer base for the City is forecast to grow at an annual rate of 2% over
the next five years. If this growth rate is greater than 2%, adjustments to sewer
collection rates may be less than projected; however, if the customer base
increases at less than 2% per year, then adjustment to these sewer collection rates
will lead to an increase above what is shown in TABLE VIII-1.
2. A significant portion of the wastewater utility's budget cover operations and
maintenance personnel costs. If recommended additions to the staff do not occur,
then the rate increases shown in TABLE VIII-1 could be reduced. The cost
savings would be offset, however, by the consequences of having inadequate and
unqualified personnel; the wastewater utility would not function efficiently and
would not provide adequate services to its customers.
3. The financial analysis assumes, the CIP in this Plan will be implemented. If it is
not, whether deliberately or unintentionally, then the required rate increases
presented in this financial analysis will change. It should be noted that delaying
the implementation of this CIP may initially result in, lower rate increases;
however, if facilities fail, then unplanned and costly repairs will be needed, which
often results in excessively high rate increases in the future.
Currently, the City Council and wastewater utility are implementing financial reviews through
the annual budget process. These reviews allow the wastewater utility access to the latest and
most accurate financial date, allowing more informed decisions. The wastewater utility will
continue to work with the City Council to recommend the necessary rate increase needed to
maintain and improve the system in order to provide the residents of the City with effective, safe,
and reliable sewage disposal service.
•
8-14
APPENDIX A
SEWAGE LIFT STATION
DATA SHEET
•
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Airport
LOCATION West Perimeter Road/Airport
CONSTRUCTED 1986 STATUS Active
REHABILITATED PROJECT S-424
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4B213 4132B
FLOW RATE 100 100
T:D.H 54 54
•
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K213DP6752A-TA 5K213DP6752A-TA
HORSE POWER 7.5 7.5
VOLTAGE 230/460 230/460
R.P.MJPHASE 1750/3 1750/3
FORCE MAIN DATA
LENGTH 195 LF SIZE 4" DI
j I
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless
Design) with fiberglass enclosure
EMERGENCY POWER CONNECTION NO
HEATING Yes CONTROL Floats
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Azalea Lane
LOCATION 2310 Aberdeen Ave NE
CONSTRUCTED 1979 ' i
STATUS Active
REHABILITATED
PROJECT S-271
PUMP AND MOTOR DATA
PUMP NUMBER 1 2 ''
MANUFACTURER S & L S & L
MODEL NUMBER 4626 4626
FLOW RATE 100-150 100-150
I
T.D.H
44 44 I
MOTOR NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 11954-XX2978 11954-XX2978
HORSE POWER 7.5
7.5
VOLTAGE 2nc1 200
R.P.MJPHASE 1766/3 1766/3
FORCE MAIN DATA
LENGTH 1250 LF SIZE 6" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless
Design) with fiberglass enclosure
EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Float
VENTILATION Yes TELEMETRY Yes --
.w;
•
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Baxter
LOCATION 5015 Lake Washington Blvd. N.
CONSTRUCTED 1974 STATUS Active
REHABILITATED - PROJECT S-163
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER A & C A & C
MODEL NUMBER NSWV NSWV
FLOW RATE 400 400
T.D.H 23 23
MOTOR NUMBER 1 2
MANUFACTURER A & C A & C
MODEL NUMBER 400 400
HORSE POWER 3 3
VOLTAGE 230/460 230/460
R.P.M./PHASE 865/3 865/3
FORCE MAIN DATA
•
LENGTH 168 LF
SIZE 8" CI
LIFT STATION CONSTRUCTION
DESCRIPTION Recessed wet well mounted lift station
EMERGENCY POWER CONNECTION Yes
HEATING No CONTROL Fl oats
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME
Boeing
LOCATION N. 8th Street & Park Ave. N.
CONSTRUCTED STATUS Active
REHABILITATED PROJECT
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Fai rbank-Morris Fairbank-Morris
MODEL NUMBER K2D39148 K2939149
FLOW RATE 4nn 400
T.D.H 30 30
MOTOR NUMBER 1 2
MANUFACTURER Fai rbank-Morris Fai rbank-Morri s
MODEL NUMBER KZKU1 KZKU1
HORSE POWER 7.5 7.5
VOLTAGE 20R-230/460 208-230/460 J
+
R.P.MJPI-iASE 860/3 860/3
FORCE MAIN DATA
LENGTH SIZE 6
LIFT STATION CONSTRUCTION
DESCRIPTION
Wet well/dry well lift station
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Bubbler
VENTILATION Yes TELEMETRY Yes
1
- SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Cottonwood
LOCATION 2003 Maple Val 1 ey Highway
CONSTRUCTED STATUS Active
REHABILITATED PROJECT
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Uniclosed Uniclosed
MODEL NUMBER 2827440 2827440
FLOW RATE 300 300
T.D.H 23
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K627XH202A 5K627XH202A
HORSE POWER 5 5
VOLTAGE 230/460 230/460
R.P.M./PHASE 1150/3 1150/3
FORCE MAIN DATA
LENGTH SIZE 6"
r I
LIFT STATION CONSTRUCTION
DESCRIPTION Recessed wet well mounted lift station with
• overflow bypass to river.
EMERGENCY POWER CONNECTION NO
HEATING No CONTROL Fl oats
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA. SHEET
LIFT STATION NAME Denny's
LOCATION 4750 Lake Washington Blvd.
CONSTRUCTED 1983 STATUS Active
REHABILITATED PROJECT S-339
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Paco Paco __
MODEL NUMBER 470 470
FLOW RATE inn i o0
T.D.H • 35 35 :.
.
MOTOR NUMBER 1 2
MANUFACTURER Cascade Cascade
MODEL NUMBER 5K184DL20239A 5K184DL20239A •
HORSE POWER 5 5
VOLTAGE 208-230/460 208-230/460
R.P.MJPHASE 1735/3 1735/3
FORCE MAIN DATA •
LENGTH 485 LF
SIZE 4" PVC ,
_ }
LIFT STATION CONSTRUCTION '
' dDESCRIPTION Wet well mounted lift station (Smith & Loveless
Design) with fiberglass enclosure. , i
EMERGENCY POWER CONNECTION Yes
HEATING
Yes i
CONTROL Floats
VENTILATION Yes TELEMETRY Yes
.1
'. SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME
Devil 's Elbow
LOCATION 120th Place SW •
CONSTRUCTED
1985 STATUS Active
REHABILITATED PROJECT S-296
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Clow-Yeomans Clow-Yeomans
MODEL NUMBER 4312-6260 4312-6260
FLOW RATE 400 • 400
•
T.D.H • 157 157
MOTOR NUMBER 1 2
MANUFACTURER Baldor Baldor
MODEL NUMBER CM2539T CM2539T
HORSE POWER 40 40
VOLTAGE 230/460 230/460
R.P.MJPHASE 1760/3 1760/3
FORCE MAIN DATA
LENGTH 2150 LF
SIZE 8" PVC
, LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station with fiberglass
walkin building.
EMERGENCY POWER CONNECTION •
-
I -� BEATING= Yes
CONTROL Floats
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Earl i ngton School
LOCATION 8055 S. Langston
CONSTRUCTED 1969 STATUS Active
REHABILITATED PROJECT S-137
PUMP AND MOTOR DATA
•
PUMP NUMBER 1 I
2
MANUFACTURER S & L
S & L
MODEL NUMBER 4B3 4B3
FLOW RATE 150 150
T.D.H 30 • 30
MOTOR NUMBER 1 2
MANUFACTURER
MODEL NUMBER
HORSE POWER 5
5 - I
VOLTAGE 230/460 230/460 ? j
R.P.MJPHASE 860/3 860/3
FORCE MAIN DATA
LENGTH 637 LF SIZE 6" CI
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well/dry well lift station (Smith & Loveless
Design) with overflow bypass.
11EMERGENCY POWER CONNECTION No
HEATING No
CONTROL Bubbler
VENTILATION Yes TELE Yes
TELEMETRY
.
_ SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME East Val 1 ey
LOCATION 3400 East Valley Road
CONSTRUCTED 1977 STATUS Active
REHABILITATED PROJECT S-200
PUMP AND MOTOR DATA
PUMP NUMBER 1 • 2
MANUFACTURER Cornell Cornell
MODEL NUMBER 4NNTRHVM5-6 4NNTRHVM5-6
FLOW RATE 350 350
T.D.H 22 22
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K6227XH2004A 5K6227XH2004A
HORSE POWER 5 5
VOLTAGE 230/460 230/460
R.P.M./PHASE 1150/3 1150/3
•
FORCE MAIN DATA
LENGTH 80 LF SIZE 8" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well/dry well lift station
EMERGENCY POWER CONNECTION NO
' - HEATING.. No
CONTROL Bubbler
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Falcon Ridge
LOCATION 2456 SE 8th St.
CONSTRUCTED 1981 STATUS Active ..i
REHABILITATED PROJECT S-303
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4B2B 4B2B
i
FLOW RATE I00 100
T.D.H 101 101 I
MOTOR NUMBER 1 2
MANUFACTURER S & L S & L ' 1
MODEL NUMBER 16055-XX2980 16055-XX2980
HORSE POWER 15 15
VOLTAGE 230/460 230/460
R.P.MJPFIASE 1800 1800/3
FORCE MAIN DATA `]
LENGTH 3217 LF SIZE 4" PVC ll
'J
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless ' J
Design) with fiberglass enclosure.
EMERGENCY POWER CONNECTION Yes
HEATINGFloat s
Yes CONTROL
VENTILATION Yes TELEMETRY Yes
, J
Li
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Highgate
LOCATION 1824 NE 20th St.
CONSTRUCTED 1979 STATUS Active
REHABILITATED PROJECT S-249
L PUMP AND MOTOR DATA
PUMP NUMBER 1 2
- MANUFACTURER S & L S & L
ti MODEL NUMBER 4B2B 4B2B
FLOW RATE 100 100
T.D.H
35 35
•
MOTOR NUMBER 1 2
MANUFACTURER Marathon Marathon
MODEL NUMBER JA-215TBDR7092BD-WCW
HORSE POWER 3 3
VOLTAGE 230 230
R.P.M./PHASE 1170/1 1170/1
J- .
FORCE MAIN DATA
LENGTH 658 LF SIZE 4" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless
Design) with fiberglass enclosure.
-1 EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Floats
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME • Honey Creek
LOCATION -
3501 NE 17th Place
CONSTRUCTED 1969
STATUS Standby
REHABILITATED
PROJECT 5-113
PUMP AND MOTOR DATA
PUMP NUMBER 1 =-,
2 ,
MANUFACTURER Paco 1
MODEL NUMBERj
FLOW RATE 100
11 T.D.H 58
,
, i
MOTOR NUMBER 1 2
MANUFACTURER Century : ',]
•
MODEL NUMBER6-324474-01
,71
HORSE POWER
7.5
VOLTAGE
-230 l
R.P.MJPHASE 1750/1
FORCE MAIN DATA
}
LENGTH 393 LF
SIZE 4" CI
L
IFI' STATION CONSTRUCTION
DESCRIPTION Recessed wet well mounted lift station with
I
• emergency bypass.
EMERGENCY POWER CONNECTION No
HEATING NO
CONTROL Floats
VENTILATION NO _-
TELEMETRY YES
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Honey Dew
-- LOCATION Union Ave NE near NE 7th St.
CONSTRUCTED
1984 STATUS Active
REHABILITATED
PROJECT S-331
L PUMP AND MOTOR DATA
PUMP NUMBER 1
2
MANUFACTURER ENPO ENPO
MODEL NUMBER 4DNDL-SS 4DNDL-SS
FLOW RATE 100 100
T.D.H
15 15
r
it MOTOR NUMBER 1 2
MANUFACTURER Reliance Reliance
r MODEL NUMBER
HORSE POWER 2 2
VOLTAGE 230 230
R.P.MJPHASE 1160/3 1160/3
FORCE MAIN DATA
LENGTH 15 L F
_-_ SIZE 4" DI
LIFT STATION CONSTRUCTION
DESCRIPTION Duel submersible non-clogging lift station.
EMERGENCY POWER CONNECTION No
HEATING No CONTROL Floats
VENTILATION TELEMETRY Yes
1
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Lake Washington Beach
LOCATION 1101 Lake Washington Blvd. N.
CONSTRUCTED
STATUS Active
REHABILITATED
PROJECT S-314
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
MODEL NUMBER 4B2A 4B2A
FLOW RATE 125 • 125
T.D.H 25 25
i 4
MOTOR NUMBER 1 2
MANUFACTURER
MODEL NUMBER ll
HORSE POWER 3
3
I.1
VOLTAGE _14_01/61____ 230/460
R.P.MJPIIASE 900/3
:.l
FORCE MAIN DATA
LENGTH SIZE 4"
LIFT STATION CONSTRUCTION
DESCRIPTION Weell/dry well lift station (Smith & Loveless .�l
t w
Design)
EMERGENCY POWER CONNECTION No
HEATING
No CONTROL Bubbler
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
,I-
LIFT STATION NAME Lake Washington Flush Station
LOCATION 2727 Mountain View Ave. N.
CONSTRUCTED 1972 STATUS Active
REHABILITATED PROJECT S-158
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER Paco
I
MODEL NUMBER 470-11
FLOW RATE 400-
I
T.D.H 6.5
MOTOR NUMBER 1 2
MANUFACTURER Paco
MODEL NUMBER
HORSE POWER 1.5
VOLTAGE . 230
R.P.MJPHASE 1150/3
1
FORCE MAIN DATA
LENGTH SIZE 8" CI
LIFT STATION CONSTRUCTION
DESCRIPTION Submersible non-clogging pump to pump lake
water into gravity sewer for flushing purposes.
EMERGENCY POWER CONNECTION No
HEATING. No CONTROL
VENTILATION No • TELEMETRY Yes
•
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Lake Washington No. 2
LOCATION 3901 Lake Wash. Blvd. N.
CONSTRUCTED 1972
STATUS Active
REHABILITATED PROJECT S-158
PUMP AND MOTOR DATA
PUMP NUMBER 1 2 ,
MANUFACTURER S & L S & L
MODEL NUMBER 4B2B 4828
FLOW RATE 400 400
T.D.H 31 31 •
MOTOR NUMBER 1 2 ,
MANUFACTURER GE GE
MODEL NUMBER 5K6225XH2500A 5K6225XH2500A
HORSE POWER 7.5 7.5
VOLTAGE 230/460 230/460
R.P.MJPHASE 1150/3 1150/3
FORCE MAIN DATA
LENGTH 192 LF SIZE 6" CI
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless
Design) with fiberglass enclosure.
I
EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Floats
VENTILATION Yes TELEMETRY Yes
' 1
i
•
SEWAGE LIIT STATION DATA SHEET
.
LIFT STATION NAME Lind Avenue
LOCATION 1801 Lind Ave. S.
CONSTRUCTED 1978 STATUS Active
- REHABILITATED 1983 PROJECT S-229
PUMP AND MOTOR DATA
PUMP NUMBER 1 2 3
MANUFACTURER Hydr-O-Matic Hydro-O-Matic Hydro-O-Matic
MODEL.NUMBER RV-6A RV-6A LV-6A
FLOW RATE 780' 780 780
' T.D.H 13 13 13
MOTOR NUMBER 1 2 3
— MANUFACTURER US Electric US Electric US Electric
MODEL NUMBER AV AV AV
HORSE POWER 5 5 5
VOLTAGE 230/460 230/460 ' 230/460
R.P.MJPHASE 865/3 865/3 865/3
FORCE MAIN DATA
LENGTH SIZE 8
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well/dry well lift station (Hydronix Design)
EMERGENCY POWER CONNECTION Yes
HEATING Yes CONTROL Bubbler
VENTILATION Yes TELEMETRY . Yes
•
SEWAGE LIFT STATION DATA SHEET
,-
LIFT STATION NAME
ve
LOCATION 5025 Ripley Lane N.
CONSTRUCTED
1974' STATUS Active
REHABILITATED
PROJECT S-163 ;'
PUMP AND MOTOR DATA
PUMP NUMBER 1
2
MANUFACTURER A & C A & C
MODEL NUMBER NSWV NSWV
FLOW RATE 75 75
T.D.H 1010
MOTOR NUMBER 1 2
MANUFACTURER A & C A & C M,
MODEL NUMBER 400 400
HORSE POWER 2 2
VOLTAGE ___22E42______ 230/460
R.P.MJPITJ SE Rfin '.1
/3 860/3
FORCE MAIN DATA
LENGTH 3 LF SIZE 4" CI
:1
LIFT STATION CONSTRUCTION
DESCRIPTION Recessed wet well mounted lift station. J
„l
EMERGENCY POWER CONNECTION No
HEATING. No CONTROL Fl oats --
VENTILATION Yes TELEMETRY Yes
i
•
, --.. SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Sears
LOCATION 321 Rainier Ave. S.
CONSTRUCTED
1959 STATUS Active
- REHABILITATED PROJECT S-24 •
PUMP AND MOTOR DATA
PUMP NUMBER 1
2
MANUFACTURER Wemco Wemco
MODEL NUMBER DVPL
DVPL
FLOW RATE 200 200
T.D.H 30 30
17,-- MOTOR NUMBER 1 2
•
MANUFACTURER A & C A & C
-7; MODEL NUMBER GV GV
•{
HORSE POWER 5 5 •
VOLTAGE 220/440 220/440
R.P.MJPHASE 1160/3 . . 1160/3
!
- FORCE MAIN DATA
' LENGTH 440 LF SIZE 6"
LIFT STATION CONSTRUCTION
DESCRIPTION Recessed wet well mounted lift station.
EMERGENCY POWER CONNECTION No
HEATING No .
CONTROL Floats
r
VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Summer Wind •
LOCATION NE 23rd St.
CONSTRUCTED 1987 Active
ctive
REHABILITATED
PROJECT S-444
PUMP AND MOTOR DATA
PUMP NUMBER 1
2
MANUFACTURER S & L
S & L
MODEL NUMBER 4C33 4C3B
FLOW RATE 375 375
T.D.H 133
133
MOTOR NUMBER 1 • 2
MANUFACTURER S & L S & L
MODEL NUMBER 876167A-2 876293A-2
1
HORSE POWER 25 25
VOLTAGE 230/460 230/460
R.P.MJPHASE 1800/3 1800/3
FORCE MAIN DATA
LENGTH 1065 LF SIZE 6"
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless
Design) with fiberglass enclosure. ; {
EMERGENCY POWER CONNECTION
HEATING Yes
CONTROL Floats j
VENTILATION Yes TELEMETRY Ye s
i
'
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Sunset
LOCATION NE Sunset Blvd and Union Ave NE
CONSTRUCTED 1963 STATUS Active
REHABILITATED 1975 PROJECT S-43
PUMP AND MOTOR DATA
PUMP NUMBER 1 2
MANUFACTURER S & L S & L
•
MODEL NUMBER 4B3 4B3
FLOW RATE 500 500
T.D.H 70 70
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K6235XH2500A 5K6235XH2500A
HORSE POWER 15 15
VOLTAGE 230/460 230/460
R.P.MJPHASE 1755/3 1755/3
FORCE MAIN DATA
LENGTI-i 2250 LF SIZE 6"
LIFT STATION CONSTRUCTION •
DESCRIPTION Wet well/dry well lift station (Smith & Loveless
Design) with overflow bypass
EMERGENCY POWER CONNECTION NO
HEATING No CONTROL Bubbler
- VENTILATION Yes TELEMETRY Yes
SEWAGE LIFT STATION DATA SHEET J
• LIFT STATION NAME Talbot Crest
LOCATION 2515 Talbot Crest Dr. S.
CONSTRUCTED 1965
STATUS Active
REHABILITATED
PROJECT S-85
PUMP AND MOTOR DATA
PUMP NUMBER 1
2
MANUFACTURER
MODEL NUMBER ,
- FLOW RATE 50 50
T.D.H 96.6 96.6 ,}
MOTOR NUMBER 1 2
MANUFACTURER Quincy 0 Quincy
MODEL NUMBER 240-10 240-10 ,)
HORSE POWER 5 5
j
VOLTAGE 220/440 220/440
- i
R.P.MJPHASE
X750/3 1750/3
(1
FORCE MAIN DATA j
LENGTH 525 L F SIZE 4" °i
LIFT STATION CONSTRUCTION
DESCRIPTION Duel pneumatic ejectors lift station. (Smith &
Loveless Design) with 8" overflow bypass.
EMERGENCY POWER CONNE .]CTION No
HEATING. Yes CONTROL Electrodes
VENTILATION Yes TELEMETRY Yes
1
'!
vJ
SEWAGE LIFT STATION DATA SHEET
LIFT STATION NAME Union 600
-- LOCATION NE 5th St. and Union Avene NE
CONSTRUCTED 19R3 STATUS Active
REHABILITATED PROJECT S-338
PUMP AND MOTOR DATA
PUMP NUMBER
1 2
MANUFACTURER Usemco Usemco
MODEL NUMBER 470 470
FLOW RATE 100 100
T.D.H 24 24
MOTOR NUMBER 1 2
MANUFACTURER GE GE
MODEL NUMBER 5K49VG8151 5K145DL20972
HORSE POWER ?HP 2HP
VOLTAGE
208-230/460 208-230/460
R.P.MJPHASE 1750/3 1750/3
FORCE MAIN DATA
r--
LENGTH 272 LF SIZE 4" PVC
LIFT STATION CONSTRUCTION
DESCRIPTION Wet well mounted lift station (Smith & Loveless
Design) with fiberglass enclosure.
EMERGENCY POWER CONNECTION Yes
_ HEATING Yes CONTROL Floats
VENTILATION No TELEMETRY Yes
.I_
APPENDIX B
JOINT USE AGREEMENTS
1. Soos Creek Water and Sewer District
(formerly Cascade Sewer District).
2. King County Water District No. 90 (Apollo Elementary School)
3. School District No. 403 (Earlington Elementary School)
4. King County Water District No. 107
(Franchise Agreement
5. King County Water District No. 107
(Joint Use Agreement)
6. King County Water District No. 128
(Service Area Boundary Agreement)
7. City of Kent
(Joint Use Agreement)
8. Cascade Sewer District
(Service Area Agreement)
. . CITY OF RENTON, WASHINGTON
RESOLUTION NO. 2269
WHEREAS the Cities of Bellevue, Issaquah and Renton acknowledge the
need for a long range planning to avoid disputes, between the various cities as to future
annexations or extension of city services, and •
WHEREAS the aforesaid cities anticipate that the establishment of spheres
of influence would assist in attaining that goal, and
WHEREAS the establishment of spheres of influence does not commit any
• city financially or otherwise, and
WHEREAS the boundaries of the spheres of influence are negotiable at a
later date and are presently to be used only for long range purposes, and
WHEREAS it has been agreed by the cities that the northern boundary of
the Renton sphere° of influence would be adjusted to incorporate the Renton School
District boundary, NOW THEREFORE •
THE CITY COUNCIL OF THE CITY OF RENTON, WASHINGTON DO
RESOLVE AS FOLLOWS: •
SECTION I: The above recitals are found to be true and correct in all
respects.
SECTION II: The City Council of the City of Renton does accept and agree
to utilize the sphere of influence as presented to the Council for the purpose stated
hereinabove except that the northern boundary of said sphere shall be adjusted to
incorporate the Renton School District Boundary.
PASSED BY THE CITY COUNCIL this 23rdlay of April, 1979.
.„(hien' Q. mC'ete
Delores A. Mead, City Clerk
APPROVED BY THE MAYOR this23rdday of April, 1979.
-'4411P. 401;ek- ' -7
Charles Delaurenti, Mayor
Approved as to form:
3L4A16-•-y.d.,"_„.•
Lawrence J. Warren, City Attorney
\ . -
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ACREI: ;IENT
T1;I5 AG'&CE;z.VT, mado and ontorcd into this 27th _ day of
ibrch, 1964, by and botwoon CASCADE SE.:L•R DISTRICT, a municipal corporation of
the Stato of .lashington, heroinaftor callod "DISTRICT', and the CITY OP RENTON,
a municipal corporation of the State of .:ashington, horeinafte I called "CITY",
:! I TNESSUT11:
THAT .:1LEREAS, the District and the City are situated continuously in
King. County, State of :lashington, and
.11ERI:AS, the District has nrcpared construction nlans and called for
contract bids for construction of an intorcontor sewer 1Lne to extend from the
present sower system oneratod by the District, within its boundaries, and to run
through curtain portions of the City to colloction trunk sewer lines constructed
by the :linicipality of 4btronolitan Scattlo, and
'flIEREAS, certain areas hereinafter described situated within the boundaries
of,the City may also bo served byuso of said intercoptor line, thereby eliminating
the necessity of the City constructing su:h trunk facilities, and
:AIEREA:, the District is willing and able to construct and pay for the
costs of said line and the City is willing and desirous ru roimburso the District
for an agreed uron portion of said construction hosts, according to the tarns and
conditions•heroinaftor set forth.
N0d, TF.REFORE, IT IS IIERznY ^,'ALLY CC*VENA:'!•:D ANA 1'.7TED by and between
the parties hereto, as follows: •
1. That the entire cunstruction cost of said intercenco: Line, acco4ing
to the onrincoring plans theroior, herotofore Prepared by Cis: District and annrenod
by the City, shall be paid by the District.
. 2. That said lino shall be constructed chrouv•• .uud v::rocs certain a:;:,
within the City c.E Renton, King County, dashington, djicribcd as foll".a:
The following description located in ;:ing County, .:ashington,
described the centerline route of the proposed Into;:en•or Sewer
from its point of discharge into the Trunk S-•cc.•n. the rasn,cinali..
of P.-tn.: :lit..:. .......r •.. the • . . ':t: 1 CLVrr
River pipe line right-of-way, which is also the city limits of Renton:
Beginning at the intersection of the North line of the :iE 1/4 of Section
21, Township 23 North, Range 5 East ::.,1., and the Nortlu4e■torly margin
of the City of Soattlo's •lorcor Island pinolino It/::, said intersection
also being ;iortl► 09000'24" Uost 1112.45 foot from the Northeast corner
{ of said Sec. 21; thence South 28023'54" ?lest along said 'lortlnccstcrly
margin 1.008.02,feet; thence South 61°36'06" East nernendicular :u said
Northwesterly margin 5.00 feet to the true noint of beginning; also
being existing :btro A.A. h-10-33;
-1-
(11 !..?ICC •.outlt 23"2 0 •,
I:, ("hence 'Jou, H ‘'c 11' 1., .0“ 64.st S ~1 rt;
N /w'w •./'�t 64.SO tart;
I)) T:,rn:c Korth 32001'11" lest 133.00 foot
(4) 1Lence .;Jrth 3015'03" Jest 1,213.76 feet ; •
(S) Menem South 14"I3'42" lost 321.:0 feet;
lam) Than/.. South 36°27'57" lost 428.92 feat;
(7) T'.hcnco South 4052'44" .lost 19S.u0 foot;
(6) Thence South 72°30'42" .:cat 232.20 feet;
('9) nonce South 48°08023" .lost 307.00 foot;
(10) Menet) South 14°26'50" .lest S4,08 foot;
(11) Thcnco South 41°51'37" East 742.d0 feet; r
(12) )hence South 47°41'00" Fait 762/73 foot)
(13Thence South 11°26'54" 'lost 603.91 foot; •
(14) Thence South 11°03'08" ,lost 104.00 feet.
Tho entire route of the interceptor sower within the City of Renton.
tho centorlino of which isdescribed above, is located on oasomonts
except the following, which are on Public Right of Way:
City of Renton streets; .
•
The most Southwesterly 105.00 foot of Course (9);
All of Course (10);
The most Northwesterly 37.49 feet of Course (11).
The City shall grant to the District a permit for the construction, oneration
and maintenance of said lino, subjoct to tho terms and conditions of this
Agreemont.
3. That said line shall be used, operated and maintained by the
I •
District and by the City for sorvico of their present and future customers for
transferring suwago collected by tho District and by the City within their
respective territories for delivery to the Hotro trunk lino and no payment or -
service charge thorefor shall be required by either of these parties one to the
other for the privilogo of such use, other than as hereinafter sot forth herein
for reimburscmont of construction costs, maintenance and repairs.
4. That the City shall have the right to authorise connections to
said lino by property owners of property s!•uatod within the boundaries of tTa•'.
City of Renton, King County, Washington. doscribcd as follows:
That portion of Soc. 21. Township 23 North, Range S
Cast 11.11. lying South of the Codar RiVer and North
• of tho South lino of tho Seattle Cedar River Pipeline R/ti,
oxcart the East 1/2 of Southeast 1/4 and except the
Southeast 1/4 of Northeast 1/4 of said Section 21;
Also. that portion of tho Easterly 1/2 of Sec. 20, •
Township 23 North. Range S Cast U.M. from which the
• sanitary sowage is carriod Easterly or Southeasterly in
the future across 116th Ave. S.C. and into snid Sec. 11
or into Soc. 28, Township 23 North, Rango S East U.N.
alder such comas and conditions as the City nay establish for making such connoc-
. tions. The City shall alsy havo the right to authorize connections to said line
by property owners of property which may herdaftoe annex to the City, under the
saw terms a"d conditions at provided herein for pronertios now situated within
the boundaries of the City.
-2-
S. ,hu 'lotion, first or corporation shall be granted a permit, or be author-
lied to tap into, hook onto, or use said sower intorcentor line, has hereinabove
descrll,uJ du
, rin g a period o! thirty (30) years from date hereof without first
paying unto the City, In addition to any and all other costs and charges made or
assosand for such hookup, tap, or use, an amount of not Is than $.013 ner square
foot of area included in any such properties for which connections are allowed by
itto City. All amounts received by the City shall be paid out by It 4nta the
District under. the teras of this Arroomont within sixty (GU) days after receipt
thereof. Furthermore, in case any tap, hookup, or connection is made Into any
such interceptor sewer, Without such payment first having boo* glade as heryi MMatre
set forth, the City Council of the City of Renton may remove. or cause to he
removed, such unauthotixod tap, hookup, or connectins, and all connettltta tlla
or pine locatod in the facility sight-of-way, and disl'so of unautLaritcd matertals
so removed, without any liability whatsoever to any party.
It is expressly understood that the aforesaid minimum charge per squars
foot, (based on the provisions of R.C.U. 35.92.025),shall not prevent the City from
adding or imposing such other reasonablo charge for collection and bookkeiling
sorvicos, includinn taxes, if any. that may reasonably be incurred by the City,
in providing for the collection servlco herein undertaken for and on behalf of the
District; it being stipulatod that the aforesaid per square foot rate is solely a
method of noasuromont of the amounts due and owing to the District for pronerties
uliuwud to connect and use said intorcontor lino facility.
G. That as betwoon these parties, it is stipulated. that the nronoriionate
share of costs of said Intorcoptor lino, as located within the boundaries of the
City, is approximately $40,000.00 and that it is the District's intent to bo
reimbursed bythe abutting g property owners for such costs. It is expressly agreed
and covonantod byand between the parties that the City does in no way warrant
payment of any such sttn, or sums, during the life of this Agreement, and that thte
City's obligation hereunder shall be limited solely and exclusively to the collec-
tion u( charges, asdrnvn stated, from property cutlers who wish to hook up and
connect to said interceptor sower trunk line. No intorest shall be charged the
City upon such sum, or any other sum, bytho District, and the City's agency for
collection purposes on behalf of the District shall not impose in any way any
liability or other costs. upon the City, and the District hereby agreos to hold the
City hornless from soy liability relating to the costs of installation, or the
District'st•anded indebtedness in connection therewith.
.
7. 'flint aalntonanco costs, ronairs and
operation necessarily incurred
lot •,uld interceptor lliio within tho boundaries of the City shall be bor,w on a
nroI)nrtlonatu basis dotorminod on the aamo ratio as tho numbor of users served
by the District boa}s to the number of users sbrvcd by the City using said inter-
.
ceptor lino. Damago to said interceptor line which may be cabled bytho noyjlponce
of either thoso parties, their agents or assigns, shall be repaired by the
r•.sponsiblo party.
8. That ownership of said line shall remain In the District until the
expiration of a poriod of thirty (30) yours from date hereof or payment in full of
the prosont bondod indobtednoss of the District or subsequent bonded indebtedness
incurred for the purpose of refinancing thereof shall have been paid in full,
whichovor event shall came first, or ..s otherwise provided by law. Thereafter,.
the City shall be under no further obligation to collect or remit any other or •
further sums to the District as reimbursement for construction costs and owner-
ship of said lino shall be jointly vosted in the District and the City, with full .
and complete right of use thoroof'allowod to each party and with expenses of
mt.lntonanco thereof continued unon the same proportionate basis as hereinabove
sot forth.
I• ,
D. In the event said lino shall become inadequate reserve the entire area
lying within tho District and the City, prefuroi1c: ba giver. to tho Dlstrlct
and its usors and tho City shall, as additional lines become available, divort
sowace collected within .Cho District into narallel and additional trunk line:,
which It Is contomplatod would then bo available as lines necessarily constructed
In development of said properties to such extent.
IN IIITNESS IAIEREOF, the parties hereto have sot their hands and seals this
77rhday of Hatch, 1961.
• CASCADE SC'!ER nISTRICT • / ,
•Glial rman 4/
•
Ci r1r of 'E!Rur
sr. ,/l i
lid ra•
•
. .Lr.. .',_; o•am .
6
STATE OF !IASUINGTON )
COtRrTY OF is c )SS. •
g
On this 27th day of March, 1064, bofore me, the undersi
Notary Public in an for the State of !lashington, duly commisslonad
dand
sworn, nersonally appeared LO!1ELL V.
mo known to bo the Chairman and Secretary,
and respectively,C1LARLES U. SCJj_5S, to
DISTRICT, a both municipal cootn', ?I CASCADE SEMI
that executed the foregoingrinstruraent�and aacknowledRedte of gthe�said instrumenthe ts
to be the free and voluntforegoing
deed of said
and purposes therein mentioned andact onoath stated c atrthey nare o authorized
to execute the said instrument and that the seal affixed isthe corporate
seal of said corporation.
.JITNESS my hand and official seal hereto affixod the day and
year in this certificate above written.
'otary 'u. c 'n an. or s State
of Nashington, residing at Renton
•
STATE OF UASIQNGTO;F )
COLRJTY OF KING ) ss.
On this ti', . I' •`•(.
Public 'in/an odar �hof
SHaft+ 1064, bofore me, the undersigned, a
Notarytar, porsonallylia 4:, a of asbington, duly efi miaslonod and
appeared and MIMIC NELSON, to ne known
to be the Mayor and City Clerk, rosnectivoly, of 1NE CITY OP RENTON, a
municipal corporation of tho State of ;lashington, the corporation that
oxecutod the forogoing instrumont and ncknowledced the scid instrunont
to be the free and voluntary act and d.,od or said corporation, for the
{ uses and nurposes theroin mentioned, and on oath stated that thoy are
authorized to oxccute the said instrument and that the seal affixod IS
the corporate seal of said corporation.
41TNESS my hand and official seal hereto affixod tl.e dRy and
year in this cortificato above written.
•Ltd/ '
. . m •l .. ,f-.G'/ •
otaty.Public in sista for the So Sta to
of Uashington, residing of it:i,ian
•
•
•
RATIF(CATIO:! l'F AL R C;Z
The undersigned. being the principal owners of nroperttos
hereiaabowe described. situated within the boundaries of the Cltr•of
Renton. In consideration and recognition of the obligations incurred by
the City of Renton under the tarns and conditions of the foregoing
Agreement, do hereby ratify and acknowledge the obligations thereof to
the extent that said Agreement affects our real
pronorty hereinabove
described. ,
No do hereby acknowledge upon behalf of ourselves, our
heirs, executors and assigns that none of our said nroperties may be
connected to the sewor trunk main beinn, constructed by Cascada Sower
District until payment has .been made to the City of Renton of such
connoction and hook-up fees as may be established by the City, which
amount will include the $.013 obligation of the City to the District as
hereinabove described.
DATED this _allay of 1•larch, 1964.
• VIKING I:NEST1I:NT CORPORATI
Dy: /`jam ,
P es dit ��•�{ 4 + '
peas or '
•
•
•
►i.. E.
ARNE C. GOEDECXE, In v -.4.4.11-;and as
Attorney.in-Fact for Louise U. Goedecke,
his wifo
•
•
-6-
I G)A,Z'- /7L/ 3/
AGREEMENT AND CONVEYANCE RE
0 SEVER LINES AND APPURTENANCES
THIS AGREEMENT made and entered into thi&2- -2 day of April , 1971
by and between the CITY OF RENTON, a municipal corporation of the second clans under
I X
the laws and statutes of the State of Washington, hereinafter referred to ae "City",
and RENTON SCHOOL DISTRICT NO. 403 hereinafter referred
I �
to as " DEVELOPER ";
W I T N E S S E T H:
•
WHEREAS DEVELOPER • is desirous of installing certain
sewer lines and appurtenances thereto at, near or within the hereihbelo*b described
property and to connect same to the City's Sanitary Sewer System so that suchimprovements
will constitute an integral part thereof; and
WHEREAS no other property owners or users are presently available to share in
the coat end expense of construction of such improvements and the parties hereto having
in mind the provisions and terms of Chapter 261 of the 1959 Sessions Laws, generally
referred to as a "Municipal Water and Sewer Facilities Act, (RCW 35.91.010 et seq)"; and,
WHEREAS DEVELOPER is willing to pay all the costs
and expenaesfor the installation of said improvements;
NW THEREFORE, IT IS HEREBY AGREED AND COVENANTED BY AND BETWEEN THE AFORESAID •
PARTIES AS FOLLOWS:
1. DEVELOPER hereby acknowledges and covenants'
that he is the owner of the following described property, to-wit:
r- See Schedule "A"
I ,
and DEVELOPER hereby agrees and covenants to cause to have
installed the following described improvements, to-wit:
i„.F. of $" concrete sanitary sewer main in Northeast 10th Street•and South-
east 116th Street between an existing sanitary sewer manhole at the intersection of
Anacortes Northeast and Northeast 10th Street anda point 1512 feet East of said intersection.
and such installation to be made in full compliance with all applicable codes and
regulations of the City of Renton. DEVELOPER further
covenants and warrants that all expenses and claims in connection with the construction
- 1 -
I
1
and installation of the aforesaid improvements, whether for labor or materials or both,
//
have been or will be paid in full, all at DEVELOPER
expense,
and DEVELOPER covenants and agrees to hold the City of
Renton harmless from any liability in connection therewith.
Z. DEVELOPER
further certifies that the total
esti^+ated cost of said construction as hereinabove specified will be in the sum of
$ 59,994.90
Based on said total amount of coat, K=7,XX { }64X XXX XXX j
Q, the cost ;:er front lineal foot (strike out the inapplicable part) of said improvement
CW
shall be employed to determine the prorate reimbursement to DEVELOPER
by any owner of real estate, who did not contribute to the original cost of such
a improvement, and who subsequently wishes to tap into or hook unto or use said facilities,
N which tap or hookup shall include connections to laterals or branches connecting thereto,
all subject to the laws and ordinances of the City of Renton and the provisions of this
Agreement. It is hereby further agreed that in the event the total actual cost of
the aforedescribed improvement shall be different from that set forth hereinabove, then
this Agreement will be duly amended to set forth the total actual cost thereof,
3. It is hereby found and determined that the construction and installation of
said aforedescribed improvement is in the public interest and in furtherance of public
health and sanitation.
4. DEVELOPER hereby agrees and covenants to convey,
transfer and assign unto City all right, interest and title in and to said improvements
and all appurtenances and accessories thereto, free from any claim and encumbrance of I'
any party whomsoever; City agrees to accept and maintain said improvement as part of
its present sanitary sewer system upon approval thereof by the City Engineer and after
inspection of said construction. DEVELOPER
further agrees and
r .I
covenants to execute and to deliver unto City any and all documents including Quit Claim
Deeds and Bills of Sales that may reasonably be necessary to fully vest title in the City
and to effectuate this conveyance and transfer. DEVELOPER {
further
agrees and covenants to pay unto City such service or other charges as may be imposed
by the Ordinance of the City of Renton from time to time applicable to like users of
the same class.
5. City reserves the right, without affecting the validity or terms of this
Agreement, to make or cause to be made extensions to or additions of the above improvement
and to allow service connections to be made to said extensions or additions, without'
liability on the part of the City.
6. No person, firm or corporation shall be granted a permit or be authorized .
•
to tap into, hookup unto or use any such facilities or extensions thereof during the
period of 10 years from date hereof, without first paying unto City, in addition to
duy and all other costa, fees and charges made or assessed for each tap, hookup or use,
or for the sanitary sewer facilities constructed in connection therewith, the amount
required by the provisions of this contract. All amounts so received by the City shall
A,
be paid out by it unto DEVELOPER under the terms of this agreement
•
� within sixty (60) days after receipt thereof. Furthermore, incase any tap, hookup or
O connection is made into any such contracted facility, without such payment having been
rT first made, the legislative body of the City may cause to have removed such unauthorized
\4. tap, hookup or connection, and all connecting tile or pipe or related accessories located
in the facility of right of way, and dispose of such unauthorized material so removed,
without any liability on the part of the City whatever. It' is further agreed and
covenanted that upon expiration of the.Nerm of this agreement, to—wits 10 years
from date hereof, City shall be under no further obligation to collect or make any further
sums unto DEVELOPER
The decision of the City Engineer or his authorized representative in
determining or computing the amount due from any benefited owner who wishes to hookup or
tap unto such improvement, shall be final and conclusive in all respects.
6. It is further agreed and understood that the sforedescribed improvements
I
to be undertaken and paid for by DEVELOPER have been or are about
to be connected with the sanitary sewer system of the City, and upon such connection and
acceptance by the City through its legislative body, said extension and/or improvement
shall be and become a part of the municipal sanitary sewer system.
I �
7. This agreement shall be placed for record with the King County Auditor's
office immediately upon execution thereof and all costs of recording shall be the
responsibility of THE DEVELOPER
•
DATED thisdfYL6Lday of April ' 1971.
, CITY OF RENTON, a M icipal corporation RENTON SCHOOL DISTRRICT NO. 403
BY )LA.MilIt/ .Th �/�!/[J]/yam/f�(�jJ� �/l�i-G c)•/:• 11€7/.a i�t
By
CITY CLERK secretary
I ,
— 3 —
•
STATE OF WASNINGT0N )
) ss
COUNTY OF KING )
1970
On this 27ttday of February , a, before me, the undersigned, a
Notary Public in and for the State of Washington, duly commissioned and sworn
personally appeared Barbara S. Lally and H. R. Johnson
to ise known to be the President and Secretary , respectively,
of Renton School District No. 403 the corporation that executed the
foregoing instrument, and acknowledged the said instrument to be the free and
• voluntary act and deed of said corporation, for the uses and purposes therein
mentioned, and on oath stated that authorized to execute the said
instrument-and that the seal affixed is the corporate seal of said corporation.
WITNESS my hand and official seal hereto affixed the day and year in
this certificate above written. -11
4,/,/ 042Y t,(46 /Y/74._.,
N tory Public in and for the Sato
of Washington, residing at Renton.
STATE OF tlASNINGTON )
) ss
• COUNTY OF KING )
On this c27- day of April .1971
before me, the undersigned, a
• Notary Public in and for the State of Washington, duly commissioned and sworn
personally appearedAvery Garrett & Helmie Nelsror�o me known to be the
individual described in and who executed the foregoing instrument, and acknowledged
to me that the?igned and sealed the said instrument as a free and voluntary
act and deed for the uses and purposes therein mentioned.
WITNESS my hand and official seal hereto affixed the day_and year in
this certificate above written. __—
t:ary Public in and for the State
f Washington, residing at Renton.
.
I•
4 – •
•
•
•
of
( CAG-1789-71
• •EXHIBIT "A" •
Renton School District -. Agreement & Convey. Sewer Lines
LEGAL DESCRIPTION
•
The northwest Y of the Northwest 4 of
Qthe Northeast a of section 10, township
23 north range 5 E.W.M., EXCEPT the north
`") 30 feet and the east 30 feet thereof con-
veyed to King County for road and EXCEPT
r6 the south 132 feet of. the east 330 feet
Cd thereof, and
The North z of the East Ili of the Northeast
N. a of the Northwest 4 of section 10, town-
CN ship 23 north, range 5 E.W.M. , EXCEPT the .
north 30 feet for road and EXCEPT the north
275 feet of the west half thereof; and the
south•.2 of the east z of the east z of the
northeast w of the northwest a of section
10, township 23 north, range 5 E.W.M. , EX-
CEPT the south 30 feet thereof for road and
EXCEPT the north 30 feet thereof, and
. The south 530 feet of tract 6, Joseph
:P. Marshall Tracts, all situated in
the County of King, State of Washington. •
•
•
I -
•
•
.
;;: •
C',/,✓ /7 F7-
•
AGREEMENT AND CONVEYANCE RE
SEWER LINES AND APPURTENANCES
IHIS•ACREEMENT made and entered into thia,,1ixdday of. 1971
by and between the CITY CP RENTON, a municipal corporation of the second class under
the laws and statutes of the State of•Washington, hereinafter referred to as "City",
and Renton School District No. 403 here inaf ter referred
1 O to as " 1,'
;
WITNESSETH:
N6 WHEREAS DEVELOPER
is desirous of installing certain
i N
sewer lines and appurtenances thereto at, near or within the hereinbelow described
QQ property and to connect same to the City's Sanitary Sewer System so that suchimprovements
N will constitute an integral part thereof;• and
WHEREAS no other property owners or users are presently available to share in
I
the coat and expense of construction of ouch improvements and the parties hereto having
in mind the provisions and terms of Chapter 261 of the 1959 Sessions Laws, generally
referred to as a "Municipal Water and Sewer Facilities Act, (RCN 35.91.010 et seq)"; and
WHEREAS DEVELOPER is willing to pay all the coats
and expensesfor the installation of said improvements;
• NCW THEREFORE, IT IS HEREBY AGREED AND COVENANTED BY AND BETWEEN ITE AFORESAID
PARTIES AS FOLLWS:
1, DEVELOPER hereby acknowledges 'and covenan•,'
that he is the owner of the following described property, to-wits
See Schedule "A"
•
.
and DEVELOPER hereby agrees and covenants to cause to have
installed the following described improvements, to-wit:
Size In From To
An 8" sanitary sewer Langston Road 250 ft. northerly 78th Ave. So.
main 6 lift station of So
. 134th St. •
6" Cast Iron �1 " South 134th St.
Pressure Main
6" C.I. Pressure
5.134th St. Langston Road 250 ft. east of
Main
Langston Road
and such .installation to be made in full compliance with all applicable codes and
regulations of the City of Renton. l DEVELOPER further
• covenants and warrants that all expenses and claims in connection with the construction
•
• I
•
r _
and installation of the aforesaid improvements, whether for labor or materials or both,
have been or will be paid in full, all at DEVELOPER expense,
and DEVELOPER covenants and agrees to hold the City of
Renton harmless from any liability in connection therewith.
2. DEVELOPER further certifies that the total
estimated cost of said construction as hereinabove specified will be in the sum of
$ 28,660.18 . Based on said total amount of cost, the=csrazs=evEutme=ttinctl or
the cost per front lineal foot (strike out the inapplicable pert) of amid improvement
shall be employed to determine the prorate reimbursement to DEVELOPER
by any owner of real estate, who did not contribute to the original cost of such
j4 improvement, and who subsequently wishes to tap into or hook unto or use said facilities,
which tap or hookup shall include connections to laterals or branches connecting thereto,
all subject to the laws and ordinances of the City of Renton and the provisions of this
Agreement. It is hereby further agreed that in the event the total actual coat of
the aforedescribed improvement shall be different from that set forth hereinabove, then
this Agreement will be duly amended to set forth the total actual cost thereof.
1•
3. It is hereby found end determined that the construction and installation of
said aforedescribed improvement is in the public interest and in furtherance of public
health and sanitation. --
4. DEVELOPER hereby agrees and covenants to convey,
transfer and assign unto City all right, interest and title in and to said improvements
and all appurtenances and accessories thereto, free from any claim and encumbrance of
any party whomsoever; City agrees to accept and maintain said improvement as part of
its present sanitary sewer system upon approval thereof by the City Engineer and after
inspection of said construction. DEVELOPER
P further agrees and
covenants to execute and to deliver unto City any and all documents including Quit Claim
Deeds and Bills of Sales that may reasonably be necessary to fully vest title in the City
and to effectuate this conveyance and transfer. DEVELOPER further
i I i
agrees and covenants to pay unto City such service or other charges as may be imposed
by the Ordinance of the City of Renton from time to time applicable to like users of
the same class.
5. City reserves the right, without affecting the validity or terms of this
Agreement, to make or cause to be made extensions to or additions of the above improvement
and to allow service connections to be made to said extensions or additions, without
liability on the part of the City.
6. No person, firm or corporation shall be granted a permit or be authorized
2
•
to tap into, hookup unto or use any such facilities or extensions thereof during the
period of 5 years from date hereof, without first paying unto City, in addition to
auy and all other costs, fees and charges made or assessed for each tap, hookup or use, •
or for the sanitary sewer facilities constructed in connection therewith, the amount
required by the provisions of this contract. All amounts so received by the City shall
be paid out by it unto DEVELOPER under the terms of this agreement
within sixty (60) days after receipt thereof. Furthermore, incase any tap, hookup or
IIU connection is made into any. such contracted facility, without such payment having been
V1
first made, the legislative body of the City may cause to have removed such unauthorized
ese
C tap, hookup or connection, and all connecting tile or pipe or related accessories located
in the facility of right of way, and dispose of such unauthorized material so removed,
N without any liability on the part of the City whatever. It is further agreed and
covenanted that upon expiration of the term of this agreement, to—wit; 5 years
from date hereof, City shall be under no further obligation to collect or make any further
sums unto DEVELOPER
The decision of the City Engineer or his authorized representative in
determining or computing the amount due from any benefited owner who wishes to hookup or
tap unto such improvement, shall be final and conclusive in all respects.
•
6. It is further agreed and understood that the aforedescribed improvements
to be undertaken and paid for by DEVELOPER
have been or are about
to be connected with the sanitary sewer system of the City, and upon such connection and
acceptance by the City through its legislative body, said extension and/or improvement
shall be and become a part of the municipal sanitary sewer system.
7. This agreement shall be placed for record with the King County Auditor's
office immediately upon execution thereof and all costa of recording shall be the
responsibility of THE DEVELOPER
DATED thiso em.o? day of April 1971
CITY OF RENTON, a M icipal corporation RENTON SCHOOL DISTRICT 0. 403
By' CUU d LI e / // Le(' G
_ Cf per- Pre er.ent •
By L-"Ik414.4:1,2 Aar
CITY CLERK Secretary
I i
- 3
•
•
1
1
STATE OF WASHINGTON )
•) as I
COUNTY OF KING ) )
• On this.• day of , 1969, before me, the undersigned, a
Notary Public in and.for the State of Washgggbon, duly commissioned and sworn
personally appearfath February xxand
to ©e known to be the and
• of Barbara S. Lally the dorplbratTitlnnalo3t executed ctheel��
•
foregoing instrument, andpetels ledged the said ingt me zt be the free and 1 I
vokunrcatY1 as4hEtldldtfldstfiefidNoorpb9ntion, for the uses and purposes therein
mentioned, and on oath stated that authorized to execute the said
•instrument and ,that the seal affixed is the corporate seal of said corporation.
.
they are ,
. WITNESS my hand and official seal hereto affixed the day and year in
this certificate above written. /,
/00-fit/ //!� it4/-1---2-*//��L/
•
Notary Public in and for the tate
of Washington, residing at Renton,
STATE CP WASHINGTON )
as
rt COUNTY OF KING )
C(1
• On this oZ4 ?'day of O./�-
/ '//7f before me, the undersigned, a I
p Notary Public in and for the State f Washin ton, duly commissioned and sworn
.personally appearedf2�.t.7) 4aix- z2,,•t/1e e,i
_ to me known to be the
individual de cribed in and who executed the foregoing instrument, and acknowlee&:d
•
to me that/ /si �nd..se l,¢d. the rsI
Q. �, . I 81i,ins trvmt as CZ free and voluntary �
act and deed for the UBba and purposes therein mentioned.
--
, ev
• WITNESS my hand and official seal hereto affixed the day and year in
this certificate above written. 1
i
N tary Public in and for the State
• f Washington, residing at Renton.
•
•. I
—+
I I
Ii• .
•
•
1
•
_ 4 _ '•
. i
•
•
•
•
•
.t CAG-1787-71
•
I ,
EXHIBIT "A" •
Renton School District — Agreement & Convey. Sewer Lines & Appurt.
All of Blocks 13, 15 and 16, together with that portion of Block
14 lying southerly of 78th Avenue South (Join Langston Road No. 3) of
Earlington Acre Tracts, according to the Plat recorded in volume 15 of
Plats, page 84, Records of King County, Washington.
•
•
.
•
•
•
CAG-1787-71
•
AMENDMENT TO AGREEMENT
AND CONVEYANCE RE SEWER LINE
Pursuant to the terms of an agreement and conveyance
•
for sewer line made and entered into between the City of Renton •
•
and Renton School District No. 403, for the Earlington '
,Elementary School. paragraph 2, page 2 of that agreement
is hereby amended to substitute the total actual cost of the
N\ improvement in the amount of $ 43 ,251.97 . for the total
N
estimated cost.
r
Paragraph 6, pages 2 and 3, is hereby amended to
(`‘ show a time period of 10 years for the present time period
of 5 years.
O . •
All other terms and conditions of said Agreement
N
•
to remain in full force and effect.
•
CITY OF RENTON ,
A Municipal Corporation
BY �( Q 01'1>
_ Mayor
By �f!! )i -,i1
City C�S�Zk
•
RENTON SCHOOL DISTRICT NO. 403
•
Barbara Lally, Pres dent
Boa d girectors
. / JP
BY A . .../'
H.R. 7. son, Secretary
Boar. • Directors
•
•
•
STATE OF WASHINGTON )
) sig
COUNTY OF KING )
Un this day personally appeared before me
AVL'RY GARRETT and t1ELMIE eLLSOH, to as known to be the Mayor and
the City Clerk, respectively, of the municipal corporation
that executed the within and foregoing instrument, and
acknowledged said inetrunent to be the fres and voluntary
act and deed of said oorporation, for the uses and purposes
therein mentioned, and on oath stated that they were authorised
to execute said instrument and that the seal, affixed is the
corporate seal of said corporation.
Given under my hand and official seal this
daY of ,_ np=i 11971.'
N tory ?uhlic in and for the State
rt f Washington, residing at gentnn
rb
STATE OF WASHINGTON )
) ea
A COUNTY OF KING )
' • On this day personally appeatred before me SARLARA S.
LALLY and H. R. JOHNSON, to ma known to be the President and
Secretary, respectively, of Renton Sohool District No. 403,
the agency that executed the foregoing instrument, and acknow-
ledged said instrument to be the free and coluntary act and
deed of said agency, for the uses and purposes therein mentioned,
and on oath stated that they are authorized to eueoute said
instrument.
iven under my hand and -official seal this c72 j
day of � �, 1870. •
4644
bb tar Public n and fore
•
Y
Etats of Washington, rest ing
in Renton.
•
•
CITY OF RENTON, WASHINGTON
RESOLUTION NO. 2692
A RESOLUTION OF THE CITY OF RENTON, WASHINGTON,
ADOPTING UTILITY FRANCHISES
WHEREAS Water District No. 107 currently owns water mains
and sewer lines within. the City of Renton rights-of-way, and
WHEREAS Water District No. 107 has applied to the City of
Renton for a water franchise and a sewer franchise to install,
construct, maintain, and operate water mains and sewer lines in
the City rights-of-way, and
WHEREAS the City Council has reviewed the franchise
agreements negotiated between City Staff and Water District No.
107 and finds them to be in acceptable form, now therefore,
THE CITY COUNCIL OF THE CITY OF RENTON, DO RESOLVE AS
FOLLOWS :
SECTION I: The findings, recitals and determinations are
hereby found to be true and correct in all respects.
SECTION II: • The Utility Franchises for Water District No.
107 as they relate to water mains, a copy of which is attached
hereto as Exhibit "A" and incorporated by this reference, and
sewer lines, a copyof which is attached hereto as Exhibit "B"
and incorporated by this reference, are hereby approved and
adopted , subject to the laws •and ordinances of the City of
•
RESOLUTION NO. 2692
Renton, and the Mayor and City Clerk are hereby authorized to
sign the franchise agreements.
PASSED BY THE CITY OF RENTON this 2nd day of November,
1987. •
•
667.)72,- -e)
Maxine E. Motor, City Clerk
APPROVED BY THE MAYOR this 2nd day of November
1987. -
�(134.5-Cutat, R,u, f)c;
Barbara Y. ' Shinpo'ch, Mayor
Approved as to form:
!!!
Lawrence J. Warr:d City Attorney
CITY3 :46/10/27/87/nd
h
P-VnV-31"*1'd
LD
V
2
EXHIBIT "B" NOVOr '87 •,
1
{ • UTILITY FRANCHISE
THIS UTILITY FRANCHISE is given this 44 day of.
1987, by the City of Renton, King County,
Washington, a municipal corporation ("Renton" or "Grantor" )
to Ring' .County Water District No. 107, a municipal
corporation ( "District" or "Grantee") .
SECTION 1: RECITALS
CI 1 . 01. The District has applied to Renton for a sewer
utility ' franchise to install , construct, maintain and
Coperate sewer lines, including mains, lateral , appurtenances
and side sewers along, under and across such city roads,
OD
'4 streets , avenues , boulevards , alleys and public places
hereinafter •called "rights-of-way", within the District' s
.4 service area.
r.
•
,(D 1 . 02. The Renton City Council ( "Council" ) has reviewed
and considered such application for sewer utility franchise.
! WHEREFORE, in consideration of the -terms and conditions
herein, Renton hereby grants to the District a sewer utility
franchise as follows:
SECTION 2: SEWER UTILITY FRANCHISE
2. 01. Renton, pursuant to Resolution No. , oZ69 ._ duly
and regularly enacted by its Council on the cp�..Q day of
, 1987, hereby grants to the district and to its
successors and assigns, for the term of twenty-five (25 )
. years from the date hereof, the right, privilege, authority
and franchise for itself, its successors and assigns, to
install, construct, maintain and operate sewer lines,
•
including mains, laterals , appurtenances, and side sewers
along, under and across such City rights-of-way, together
with all necessary equipment of every sort necessary,
subject to all the terms and conditions herein.
2. 02. This Utility franchise shall apply to those
, • portions of the District's sewer lines and appurtenances
within the City of Renton' s present rights-of-Way as
referenced in paragraph 1. 01 above.
I
CITY3: 50/10/28/87
87/11/18 #0729 A
REM F 13.00
Ci=iSHSL **:+:13. 00
11
1 •
1 ,
•
SECTION 3 : GENERAL TERMS AND CONDITIONS APPLICABLE TO THE
UTILITY FRANCHISE.
3. 02 Definitions :
(a) Right-of-Way. The term "right-of-way" shall
be understood to include any and every Renton City road ,
street , avenue , alley or other public place designated or
specified in this franchise in, upon, under, over , across and
along which rights are, or are intended to be vested in the
Grantee , its successors and assigns , under and by virtue of
this franchise.
(b) Director. The term "director" shall be the
City of Renton Director off—Public Works .
(c) Utility. The term "utility" shall be
understood to mean, as the context may require , either the
0) Grantee herein, or any other person , firm or corporation ,
Neither
public or private , which may hold a franchise to
maintain and operate similar facilities in, upon , under, over,
across and along any of .the public rights-of-way, or portions
4 thereof , within the area specified .
'0 (d) Other Governing Body. The term "other
t governing body" shall be understood to mean such public
O official or other public board or body as may have power and
jurisdiction over the rights-of-way and be legally vested with
jurisdiction and authority to permit or regulate the
installation, maintenance of lines and other facilities , in,
upon, under , over , across and along the rights-of-way within
the specified area.
3. 02 Acceptance by Grantee of Terms and Conditions .
Grantee shall be deemed to have abandoned and forfeited all the
rights , privileges and authority hereby granted , unless within
thirty (30) days from the date hereof Grantee shall file with
the Council its written acceptance of this franchise , subject
to all of the terms , conditions , stipulations and other
obligations herein contained and enclosed , and in case the
Grantee shall fail to do so within the time aforesaid , this
franchise shall be null and void and of no effect.
3. 03 Exclusive Franchise Unconstitutional . This
franchise shall not be deemed or held to be an exclusive
franchise , and shall not in any manner prohibit the Council
from granting other and further franchises of any kind or
character that it may deem proper, in, upon, under , over,
across and along any right-of-way within the area described
herein, and this franchise shall in no way prohibit or prevent
-2-
•
I ''
the public from using any such rights-of-way or affect the
jurisdiction of Renton over such rights-of-way or any part
thereof , or its power to make all necessary improvements ,
repairs or changes therein.
3. 04 Jurisdiction. This document shall not be
construed by Grantee , or any other person, persons or
corporations , as a warrant of title or interest in City roads
or rights-of-way but is intended to convey such rights-of-way
and interests only as to those roads and rights-of-way in which
the City has an actual interest.
3. 05 Regulation of Use and Control . The City granting
this franchise does not waive any rights which it now has or
may hereafter acquire with respect to City roads , rights-of-way
or other City property and this franchise shall not be
construed to deprive the City of any powers , rights or
privileges which it now has or may hereafter acquire to
regulate the use of and to control the City roads ,
rights-of-way and any other City property covered by this
franchise.
C
3. 06 Vacation. If at any time the City shall vacate
0 any City road , rights-of-way or other City property which is
GD subject to rights granted by this franchise , the City shall not
_- .4 be liable for any damages or loss to the Grantee by reason of
.4 such vacation.
wo
3. 07 Responsibility for Damages . The Grantee agrees
for itself , its successors and assigns , to indemnify and hold
the City harmless , its appointed and elected officials and
employees from and against all loss or expense , including
attorney' s fees and costs arising out of any negligent act ,
error or omission by the District , its agents or employees
related to this Franchise.
3. 08 Requirement of Construction Permits . The said
Grantee , its successors or assigns , shall have the right and
authority to enter upon the City roads and rights-of-way
described herein for the purpose of constructing , extending ,
repairing or replacing , servicing and/or operating and
maintaining its lines and facilities and connecting the same
with consumer service lines , upon the condition that prior to
such work within the City roads or rights-of-way, the Grantee
shall first obtain the necessary permits approved by the
Director of Public Works.
Applications for said permits shall first be presented to
the Department of Public Works which may require copies of
plans , blueprints , cross-sections or such further detail of the
-3-
work to be done as is , or may be required by ordinance in other
instances . Such work, whether done by the Grantee , its
contractors or third parties connecting to the Grantee ' s lines
or facilities , shall include necessary paving , patching ,
grading and any other reasonable and necessary repair or
restoration to the pre-existing City roads , rights-of-way and
shall be to the satisfaction of the director.
All permits shall be applied for and given in the name of
the Grantee who shall be held responsible for all work done
thereunder, whether the work done thereunder is by the forces
of the Grantee, its contractors or by third parties connecting
to the lines or facilities of Grantee.
Before any work is performed under the permit , the
Grantee shall establish two or more reference marks to all
monuments and markers of every nature relating to subdivision ,
plats , right-of-way and all other surveys within the permitted
area. The reference points shall be so located that they will
• CI not be disturbed during the Grantee ' s operation under the
permit . The method of referencing these monuments or other
points to be referenced shall be approved by the director
O before placement . The replacement of all such monuments or
GS markers disturbed during construction shall be made as
expeditiously as conditions permit and as directed by the
wq
r4director. The cost of monuments or other markers lost ,
f• destroyed or disturbed and the expense of replacement by
g0 approved monuments shall be borne by the Grantee.
Grantor shall be named' as an additional obligee on
performance bonds required by the District for any work within
the franchise area herein.
3. 09 Providing "As-Built" Drawings . The developer/
contractor shall maintain on the jobsite project plans marked
to indicate City-approved plan revisions made in the field and
other details of construction. The drawings shall be made
available upon completion of the project to the District for
use and preparation of "as-built" records . The developer shall
be responsible for the cost of any required "as-built"
drawings . A copy of these "as-built" drawings shall be
provided to the City.
3. 10 Restoration of Right-of-Way. The Grantee shall be
responsible for and leave all City roads and rights-of-way in
good condition, after work on, under or adjacent to the City
roads or rights-of-way as the same were before such work. In
the event that the Grantee , its contractors or third parties
connecting to Grantee ' s lines or facilities under work permit ,
-4-
• RESOLUTION NO. 2413
WHEREAS the City of Kent has within its municipal
boundaries a portion of land bordering S . 180th, also known as
S .W. 43rd, which area is not presently served by sewers , and
WHEREAS the City of Kent does not have at present the
ability to provide sewer service to that portion of land, and
WHEREAS as part of the widening project on S . 180th
Street (S .W. 43rd) , the City of Renton plans to install sanitary
sewers , and
WHEREAS the City of Kent has previously reauested the
City of Renton to serve previously described land with the City of
Renton ' s sanitary sewer, and
WHEREAS it is agreed between the City of Renton and the
• City of Kent that the City of Renton shall have the right to provide
sanitary sewer service to the City of Kent parcel along S . 180th
(S .W. 43rd) described as Parcels 36 through 40 on the Exhibit
attached hereto and it is further agreed that the City of Renton
shall have the right to charge one and one-half times the normal
• sewer service rate plus its normal connection charges , System
Development Charges , tap-in charges , and Community Facility Charges
as are applicable , now therefore
THE CITY COUNCIL OF THE CITY OF RENTON , WASHINGTON , DO
RESCUE AS FOLLOWS :
SECTION I : The above recitals are found to be true
and correct in all respects .
SECTION II : The Mayor and City Clerk are hereby authorize,
to enter into an Interlocal Agreement with the City of Kent to
provide sewer service to those parcels along S . 180th Street as
per Exhibit "A" attached.
PASSED BY THE CITY COUNCIL this 3rd day of August , 1901 .
e ores . Me , C ty C er
�l ,
APPROVED BY THE MAYOR this 3rd day of August , 1981 .
Bar. ara . S inpoch , Mayor
Il
Approved as to form;
Lawrence J . Warren , City—Attorney
•
•
CAG 072-85 •
AGREEMENT
THIS AGREEMENT made and entered into this /0 ay rf 1985 by
and between the City of Renton, a municipal corporation, her in ter referred to as
the "City" and King County Water District 11128, a municipal corporation, hereinafter
referred to as the "District", both duly authorized and existing by vertures of the
laws of the State of Washington..
i'
WITNESSETH
WHEREAS, the parties to this agreement each have the power to perform the terms '
and conditions of this agreement, and
WHEREAS, the District has or is about to, assume the ownership, operation and
maintenance of the King County Sewer and Drainage District 114, and the Olsen
District for the purposes of providing sanitary sewer service, and
.
WHEREAS, the District has or is about to assume the King County agreement with
First City Development Corporation to provide sewer service thru the District system,
and
WHEREAS, Renton has adopted a policy of requiring annexation to the City of
Renton prior to extension of 'sewer service outside its corporate limits in order to
• ensure that all areas annexed to Renton are as far as s 1 lewd velo dto City
standards, • j 7? y7. d ESTa.�7 70
. cr' 1nTC.
WHEREAS, in the City and the District'sAfuture ultimate service areas for
sanitary sewers that service overlaps and system duplications be avoided, •
s
NOW, THEREFORE, IT IS COVENANTED AND AGREED AS FOLLOWS:
1. PURPOSE: The purpose of this agreement shall be to establish generalized
service boundries between the District and the City.
2. BOUNDRIES: The District
and
Olthe
andCity
notatoeserviceservice
insidewithin
otherpagencyised
service area map of Exhibit
area without consultation and joint approval.
•
IN WITNESS WHEREOF the parties have hereunto set their hand and seals the day
• and year first above written.
KING COUNTY WATER DISTRICT 11128 CITY OF RENTON
Adopted at the regular meeting of
the Board of * .mmissi• ers
/,� � situ CSG
Barbara Y. Shinpoch, Mayor
l"
' x. 7f,2- jo2- e. me
�— Maxine E. Motor, City Clerk
. A0,01 e ./ea.n./1„0174
Approved as to legal form:
• Lawrence Warren, ity Attoney
/'� day o -- 1985. Signed this /( day of �p,2i. 1985.
Signed this f'
•
STATE OF WASHINGTON)
)ss
COUNTY OF KING )
THIS Is to certify that on this 1.Zp-fit day of X24J : 4J ST
19 ��
•
before me, the undersigned Notary Public, personally appeared
•
p0 G eAr 5 ,
"A 1 L 4 P2-TFC , LicX;v
and
to me known to be the Co.1:t--n , 5�lcry,t-a__;.„ (9,c 6., ,A1•772.-r '
and acknowledged to me that executed the foregoing instrument for
said as its free and voluntary act and deed, for
uses and purposes therein stated, and upon oath stated that such execution. of •
said instrument by _.._is duly and regularly authorized.
GIVEN under my hand an official seal the date last above stated.
1' 9 • •
otary Public in and for the State
of Washington residing atg5f1a77,-2-2.2=
••
•
STATE OF WASHINGTON )
) ss
COUNTY OF KING )
This Is to certify that on this day of
before me, the undersigned Notary Public, personally appeared
27+�.�Y-+•L .
and �ir-� u� )2/1:15-/
to me known to be the duly qualified and acting Mayor and City Clerk
respectively, of the City of Renton, Washington, and acknowledged that they
executed the above and foregoing instrument for the City of Renton as the
free and voluntary act and deed of said City for the uses and purposes
therein set forth, and upon oath stated. that such execution of said
Instrument by them is duly and regularly authorized and that the seal
attached thereto Is the corporate seal of the City of Renton.
Given under my hand and official seal this /614 day of /40,2,-- I9•
•
•
• Notarr Wb— In and for the State
of Washington, residing at Renton
•
.
•
.,: I , ..I 7 I _ �' %.1: . .BRYN •MAWR
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----� a '':..''' : :W`''.,.`i 9 .:CITY•'�LIMITS . '
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---- -•-•_ •_ '!' i44.:tr:s_s.:,.._.2: :.'1-.:.'t•. it;Vt_.11-:1-1.r!_'.ir'` I ` ' lir \'\
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I t . ;' ,-. :1. ...,' ., i.•1= !, -•4-- `�'� �F"'�J---'REQUIRED Eariington School!+` •--.I
SERVICE BOUNDARY BETWEEN • ' I. ' 'I- =E--,.•= 'moil.•_ �� ' Lift Station L_ _ _
RENT1 . ON AND W.D . LT_7 28:= I • .I i •+ =1 " '' ' ; I
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sNE.Er .20 • SHEET
• .j
CAG 039-74
AGREEMENT FOR PROVISION
OF SEWER SERVICE
THIS IS AN AGREEMENT between the City of Renton and
Cascade Sewer District regarding the provision of sewer service
to the areas defined.
I.
DEFINITIONS AND TERMINOLOGY
(1.) "The City" is the City of Renton, a municipal corpor-
ation in King County, Washington.
(2.) "The District" is the Cascade Sewer District, also a
municipal corporation in King County, Washington.
(3.) "Safecare-Careage" is the Safecare Company, Inc. and
the Careage Corporation, otherwise known as Safecare-Careage
Venture -No. 7, one of the contracting parties to the Safecare-
Careage Contract hereinafter defined.
(4.) "The Safecare-Careage Contract" is that contract be-
tween the City and Safecare-Careage dated the 11th day of August,
1970 pursuant to which the City authorized Safecare-Careage to
construct a sewer main of approximately 1,670 lineal feet of
eight inch (8") sewer pipe and six manholes in Springbrook Road
extending approximately 570 feet south of the center line of
South 180th Street on the east side of Springbrook Road and
approximately 1,100 feet north of the center line of So. 180th
Street on the west side of Springbrook Road and connecting to
existing manhole R 18-25.
(5.) "The Springbrook Line" is the sewer line constructed
pursuant to the Safecare-Careage Contract.
(6.) - "Scott's Terrace" is the property, the plat of which
is recorded as the plat of Scott's Terrace in Volume 72 of Plats ,
pages 39 and 40, of the records of King County.
(7.) "The Radovich Property' is the entire parcel of land
bounded on the south and east by Carr Road, on the north by the
-1-
•
south line of Scott's Terrace, and on the west by the Talbot
Road.
(8.) "The Talbot Road" and the "Springbrook Road" are in
effect a single street, the northerly portion of which is com-
monly known as Talbot Road, and the southerly portion of which
is commonly known as the Springbrook Road.
(9.) "So. 180th Street" is a street intersecting Talbott
Road, and within the City of Renton said street is known as So.
43rd Street on the City's numbering system. As said street ex-
tends easterly from its intersection with the Talbot and Spring-
brook Roads, it is known as Carr Road.
(10.) "The existing crossing" is a short main extension of
the Springbrook Line crossing the Talbor Road from manhole No. 2
to a spot near the boundary of Lots 1 and 2 of Scott's Terrace.
(11.) "The proposed crossing" is a main extension of the
Talbot Road Line proposed to be constructed from manhole No. 1
to a spot near the boundary of Lots 4 and S of Scott's Terrace.
(12.) "U.L. I.D. 11" is a Utility Local Improvement District,
numbered 11, being formed by Cascade Sewer District, and includes
1
Lots" 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 27 and 28 of Scott 's
Terrace, and that portion of the northerly 150 feet of the Rad-
il
ovich Property which lies east of the southerly prolongation of i +
the westerly boundary of Lots 17 and 18 of Scott's Terrace.
(13.) "METRO" is the Municiplaity of Metropolitan Seattle,
(14.) "The METRO Line" is a sewer trunk built, owned and
maintained by METRO, into which the Springbrook Line empties
at approximately the intersection of Talbot Road and South 177th
Street. The METRO Line continues generally easterly along South
177th Street, then continues generally southeasterly along
98th Avenue South, and then continues easterly.
II.
FACTUAL BACKGROUND ;
(1.) Under date of August 11th, 1970, the City and Safecare-
Careage entered into the Safecare-Careage Contract which permitted -J
Safecare-Careage to build the Springbrook Line hereinabove
defined.
(2.) Said contract provided for reimbursement to Safecare-
Careage, subject to the laws and ordinances of the City of Renton,
by the owner of real estate who did not contribute to the orig-
inal cost of the improvement and who subsequently wished to tap
irito or hook onto or use the facilities.
(3.) Said contract also reserves to the City the right
to make or cause to be made extensions of or additions to the
above-mentioned improvement and to allow service connections
to be made to said extensions or additions without liability on
the part of the City.
(4.) The properties, the owners of which are to be charged for
tapping into or hooking onto the Springbrook Line, and the amount
and rate of said charges for said properties, have already been
determined in accordance with Ordinance No. 2847 of the City of
Renton. Of the properties involved in this Agreement, they are
the properties, sewer service to -which is to be provided by the
City and not by the District under this Agreement.
(5.) The City is presently providing sewer service to Lots
1 and 2 of Scott's Terrace by means of the existing crossing.
(6.) No formal agreement for the provision of sewer service
f •
in. the subject area has been entered into between the City and
the District.
(7.) The City also proposes to provide sewer service to
Lots 4 and 5 of Scott's Terrace by permitting the construction
of the proposed crossing. •
(8.) The City. is prepared to furnish sewer service through
the Springbrook Line to Lots 3, 6, 7 and 8 of Scott 's Terrace.
i .
(9.) Although all of Scott's Terrace and the Radovich Property
are within the Cascade Sewer District and are outside the limits
of the City, each -party recognizes that sewer service to Lots
1, 2, 3, 4, 5, 6, 7, 8 and 16 of Scott's Terrace and to that portion
-3- •
of the Radovich property which lies to the west of the
southerly prolongation of the westerly boundary of Lots 17
and 18 of Scott's Terrace can be provided by the City through
the Talbot Road Line sooner than such service could be pro-
vided by the District, and that sewer service to these prop-
erties by the City and the payment to the City of the charges
necessary under the Safecare-Careag'e Contract as already de-
termined pursuant to said Ordinance •No. 2847 has and will pro-
vide the funds for reimbursement of Safecare-Careage under the
contract.
(10.) The District proposes to serve the properties within
U.L. I.D. 11 by utilizing the existing crossing and the proposed
crossing as hereinabove defined.
(11.) Both the City and the District have identical agree-
ments with METRO relating to the METRO Line, permitting both
the City and the District to make sewer service available to
• properties along said line by allowing said properties to be
hooked onto the METRO Line, making an appropriate charge to the
owners of said properties and remitting the same to METRO as
payment against the cost of the construction of said line.
(12.) Because of the possible duplication of charges, and
the question of the proper agency to'provide sewer service to
various properties referred to above, the parties thereto do
desire by this Agreement to formalize their mutual responsibil-
ities and rights in the area. I!
III.
�.I
MUTUAL COVENANTS AND AGREEMENTS
In consideration of the covenants herein contained,
and in consideration of the benefits to each of the parties to
{
be derived from this Agreement and the performance thereof, and
-4-
J
because of the facts stated above, the parties hereto do agree
and covenant as follows:
(1.) The City will make sewer service available for that
portion of the Radovich Property lying west of the southerly
prolongation of the westerly boundary of Lots 17 and 18 of
Scott's Terrace and for Lots 1, 2, 3, 4, 5, 6, 7, 8 and 16 of
Scott's Terrace, and the District will not attempt to provide
sewer service for said areas.
(2.) The City will authorize an extension of or addition
to the Springbrook Line by permitting the construction- of the
proposed crossing hereinabove defined. Said crossing must be
in accordance with the standards and requirements of the City
as to design and construction. The cost of the construction
- of said proposed crossing will be borne by the District or
li
by private owners with whom the District may contract, or both,
but the proposed crossing will be constructed at no cost to
the City.
(3.) When the proposed crossing is completed, it will be
transferred to the City and will be available for the use of
the City to provide sewer service to those lots in Scott's
Terrace for which the City is to make sewer service available
under this Agreement.
(4..) Other than the properties described in Paragraph
(1.) of Section III of this Agreement, the District will make
sewer service available for all other properties within its
boundaries in the area of U.L.I.D. 11.
(5.) The City agrees that the District may, without pay-
ment of any area connection charges, connection fees, latecomer
fees, extended service fees, or any fee of any kind, but at the
District's own cost of construction, connect its mains to the
existing crossing to the proposed crossing when constructed,
provided that the design and construction of the District 's
-5-
I
.
facility so connected meet with the approval of the City. ._
(6.) Without any cost to the City, the District will
place a manhole at the easterly end of the existing crossing
and will connect the existing side-sewer to this manhole. The
District will also cause a manhole, to be constructed at the
easterly end of the proposed crossing, and each of said manholes,
when completed, will be transferred to the City to own as
part of their main extensions consisting of the existing cros-
sing and the .proposed crossing. Said manholes will meet the
design and construction requirements of the City.
(7.) Unless it has the prior consent of the City, the
District will not attempt to make sewer service available to
thosero erties lying =-�
P P immediately south of So. 180th Street
and in the immediate vicinity of the Sringbrook Line which,
without the construction of main extensions which would be
exempt from any charges under Paragraph S of the Safecare-
Careage Contract, can be served by that portion of the. Spring-
brook
g
brook Line as presently constructed. {
(8.) Although portions of the lines hereinabove described
will be jointly used by the City and the District, each of 11
the parties hereto will maintain its own lines at its own
cost.
(9.) If all of the properties which are to be served by '1
the District under this Agreement are annexed to and become
a part of the City, the District will, without charge to the
City, transfer to the City the entire sewer system to be con-
structed by the District in U.L.I.D. 11 as described in this
Agreement.
(10.) All facilities constructed by the District which are -_J
to be transferred to the City under this Agreement will be
transferred by an appropriate Bill of Sale in standard form. L J
(1.1.) The District will hold the City harmless from any
-6-
claims made against the City and will protect the City from
any liabilities in connection with any of the work to be
done by the District.
•r-
{ (12.) Nothing in this Agreement as to which party shall pro-
vide sewer service to• particular properties shall be construed
as to require the provision of such service except in accord-
,
•
ance with the Ordinances or Resolutions of the party, and
r--
upon payment, to the party of all proper charges by the property -
owner.
r-
•
I
IN WITNESS WHEREOF, the parties hereto have caused
• this Agreement to be executed by their duly authorized
officers and to have their respective seals affixed hereunto.
II
• DATED this /Qday of / VE M 131=-,Q , 1974.
C ,
CITY OF RENTON -
A municipal corp ation •
{
BY
ayorr
BY /tl' Ltez/ i Clerk
r
CASCA E SEWER DISTRICT
By • -`-�-
P esiden Commissioner
By i/%/
ommissioner
•
11.17
BY _-(.57),.Lc_„4 / c(Z ,/14•-,i
Secretary Commissioner
•
•
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shall fail to restore the City roads or rights-of-way to the
condition that pre-existed such work to the satisfaction of the
director, the City reserves the right to make such repairs or
restoration to such roads or rights-of-way, and upon
presentation of an itemized bill for such repairs or
restoration, including the cost of labor and equipment , the
Grantee shall pay the said bill within thirty (30) days . In
the event that suit is brought upon failure to pay the bill
within thirty (30) days , and upon judgment being entered in
favor of the City, Grantee shall further pay all the actual
costs , disbursements and attorney' s fees incurred thereby.
3. 11A Removal or Relocation of Facilities Installed by
Grantee. Upon the relocation or change of grade by the public
authorities of any right-of-way described herein, any lines or
facilities , erected upon or within any portion of such
right-of-way, shall , if necessary, be removed by the Grantee at
its own expense so that it shall not interfere with the work of
relocation or change of grade and shall be reset in accordance
O with the provisions above set forth so that the location and
elevation of such line or facility shall conform to the new
grade and location of the right-of-way. Grantee shall
likewise , at its own expense , upon demand of the director, •
relocate any line or facility which shall interfere with a
vui reasonably located driveway giving access to abutting
property. The City shall in no event be held liable for any
roi
damages to said Grantee that may occur by reason of the City' s
CID improvements , repairs or maintenance or by the exercise of any
rights are reserved in this section.
3. 11B Competing Service Areas . In the event that the
parties have existing sewer lines parallel to one another and
subject to Chapter 35. 13A, et seq. and further subject to any
assertion of jurisdiction by the Boundary Review Board and any
subsequent decision of the Boundary Review Board , the parties
agree that should the Water District need to replace a sewer
. line or perform such substantial repairs to the sewer line that
the cost of repairs is equivalent to the value of the sewer
line , then the City of Renton shall have the right to provide
service to the 'customers in the City limits in that service
area.
3. 11C Installation Codes. Grantee agrees that any new
sewer line installation or replacement done pursuant to this
agreement shall meet all requirements as set out in the current
or subsequently adopted :
•
-5-
•
•
King County Water District No. 107 - Metro
Service Agreement and Specifications ;
King County Water District No. 107 Design and
Technical Specifications :
Parts II and III : Technical Specifications
- Sewer Extension ;
Part IV: Technical Specifications -
Standard Sewer Details ;
Standard Specifications for Municipal Public
Works Construction of the American Public Works
Association ;
"Criteria for Sewage Works Design," State of
Washington Department of Ecology - Revised Oct.
1985 ;
OWashington Administrative Code Section 173-240,
"Submission of Plans and Reports .for Construction
of Wastewater Facilities:' (DOE) ;
.4 All other applicable state and federal
regulations and statutes regarding sewage works ,
QD design and hazardous waste disposal .
3. 12 Blasting Requirements. The laying , construction ,
maintenance and operation of the Grantee ' s system of lines and
facilities granted under this franchise shall not preclude the
City, its accredited agent , or its contractors from blasting ,
grading or doing other necessary roadwork contiguous to the
Grantee ' s lines and facilities , provided that the Grantee shall
have seventy-two (72) hours notice of said blasting or
excavating in order that Grantee may protect its lines ,
facilities and property.
3. 13 Assignment of Rights to Third Party. The Grantee
shall have the right to assign its franchise provided , however,
no such assignment shall be of any force or effect unless
written notice of such assignment shall be filed with the Clerk
of the Council within thirty (30) days. thereafter, together
with an acceptance by the assignee .i n writing of all the terms ,
covenants and conditions of this franchise and an agreement of
such assignee to perform and be bound by all the terms and
conditions of this franchise. 1
_l
All the provisions, conditions , regulations and
requirements herein contained shall be binding upon the
successors and assigns of the. Grantee, and all privileges , as
-6- .
. i ,1
•
well as all obligations and liabilities of the Grantee, shall
inure to its successors and assigns equally as if they were
specifically mentioned wherever the Grantee is mentioned .
3. 14 Expiration and Renewal . All rights granted by this
franchise to City roads and rights-of-way shall apply to all
existing City roads and rights-of-way whether improved or
unimproved , and shall further include City roads and
rights-of-way acquired by the City after the date of execution
of this document.
If, upon expiration of this franchise , Grantee shall not
have applied for renewal of same, the City shall have the right
to remove such lines or facilities of the Grantee as are
reasonably necessary for the safe condition of the roads or
rights-of-way or facilities of other franchise holders and such
are reasonably necessary to remove for the construction,
renewing , altering or improving of such roads or rights-of-way,
and such as are reasonably necessary to remove for the
01 installation of lines and/or facilities of other franchise
Cit holders . Grantee shall be liable for the costs incurred in
such removal including the cost of labor and equipment ;
OD
provided that such removal is affected with two (2) years from
OD the expiration date hereof:
41.4
3 . 15 Right to Amend . The City reserves for itself the
{` right at any time upon ninety (90) days written notice to the
- OD Grantee, to so change , amend , modify or amplify any of the
provisions or conditions herein enumerated to conform to any
state statute or regulation relating to the public welfare ,
health, safety or right-of-way regulation as may hereafter be
enacted , adopted or promulgatedand this franchise may be
terminated at any time if the Grantee ' s lines and facilities
are not operated or maintained in accordance with such statutes
or regulations.
3. 16 Environmental Compliance. Grantee must conform to the
Washington State Environmental Policy Act and any amendments
thereto.
3. 17 No Discrimination in Employment . In connection with
the performance of any work by the District or its agents
addressed herein, the District and its agents shall comply with
all federal , state and local codes, statutes and ordinances
prohibiting discrimination.
3. 18 Penalty for Violation of Conditions . If the Grantee
shall violate or fail to comply with any of the terms,
conditions or responsibilities of this franchise through
neglect or failure to heed or comply with any notice given the
-7-
Grantee under the provisions of this franchise, the Council
may revoke, amend, alter, change or supplement this
franchise provided , however, that the Council shall give
thirty (30 ) days written notice of its intention to doso,
during which period the Grantee shall have the opportunity
to remedy the failure to comply.
3 .19 Franchise Fee. The Grantee shall annually pay to
the City a franchise fee of five cents ($.05) per lineal
foot of transmission sewer lines owned by the Grantee, lying
within City rights of way as described in paragraph 2. 02
herein. City and Grantee agree that Grantee owns
transmission and service lines and is responsible for
maintenance thereof.
3. 20 Severance. This agreement shall be construed to
give effect to such purposes and uses under this franchise
0) which are consistent with economical and efficient service
04 rendered in the public interest. If any provision of this
franchise, or its application is determined to be invalid by
Q court of law, then the remaining provisions of the franchise
shall continue and be valid unless the dominant purpose of.
rl the franchise or the public interest herein is thwarted
'4 thereby.
N 3 . 21 Recording. This agreement shall be recorded with
'D the King County Office of Records and Elections immediately
upon its execution by the parties herein.
SECTION 4: RESERVATION OF RIGHTS; RENTON UTILITY TAX
4 .01 The City and the District acknowledge disagreement
over the City' s right to impose water utility taxes on the
District' s gross revenues derived from parties receiving
service from the District located within Renton's corporate
boundaries. The parties acknowledge the District' s refusal
to collect and transmit such utility tax to the City.
Therefore, the City hereby expressly reserves all rights to
make claim against the District for the payment of such
utility taxes.
SECTION 5: RESERVATION OF RIGHTS; COMPREHENSIVE PLAN
APPROVAL •
5. 01 The parties herein reserve all rights provided
under applicable Washington law to approve, conditionally
approve, or reject the general Comprehensive Plan as
submitted by the other party.
CITY OF RENTON ( "Renton" ) KING COUNTY WATER DISTR T
NO. 107 ( "Di $ct" )
8 y
By
Its Mkyor Its �iL� S� 9�t/'�f ..A
ATTEST:
8
City Clerk
•
The undersigned hereby accepts all the rights and privileges
of the above granted franchise subject to all the terms,
conditions, stipulations and obligations contained herein.
RING COUNTY WATER DIST CT
NO 107 7A/484.:)
BY
Its !f-f��57,E0/7—,7
Dated this //4 day of November , 1987.
CITY3:51/10/30/87
00)
04
O
11,4
9
CAG 035-75
.
AGREEMENT
THIS AGREEMENT, made and entered into this / 914
day of
J (. n , 1975 by and between the CITY OF RENTON, a municipal
corporation operating as a non-charter code city, hereinafter referred to as
"City" and KING COUNTY WATER DISTRICT NO. 107, a municipal corporation, herein-
after referred to as "District",
WITNESSETH:
WHEREAS, City and District are situated contiguously in King County, State
of Washington; and
WHEREAS, City is presently preparing construction plans and call for bids
in connection with Local Improvement District No. 284 including the construction
of an interceptor sewer line extending from the present sewer collection trunk
line operated by the Municipality of Metropolitan Seattle, which line, when
extended, will run within the boundaries of District; and
WHEREAS, District likewise intends to utilize said interceptor sewer line
within its boundaries and in order to avoid duplication of such trunk facilities;
and,
WHEREAS, District is willing to pay for the total cost of said line and to
promptly reimburse the City for all of such costs and expenses incurred for said
sewer line located outside the present boindaries of Local• Improvement District
No. 284, further reference being hereby had thereto.
NOW, THEREFORE, IT IS HEREBY MUTUALLY AGREED AND COVENANTED by and between
the parties as follows:
1 . The parties enter into this Agreement under the authority of •
RCW 39.34.080.
2. Said Sewer line and appurtenances thereto shall be constructed through
r—, and across certain areas within the City of Renton and Water District No. 107,
, King County, Washington, as follows:
SEE EXHIBIT "A" .
1
3. District hereby gives and grants unto the City full authority for the
construction and installation of said line within the boundaries of District;
it being understood and agreed that City's contractor, after award of bid to the
lowest responsible bidder, will perform all of such work within the boundaries of
said Local Improvement District and within District's territory as .more
particularly shown on the attached exhibit which is incorporated herein as if
fully set forth.
4. The District will pay for all such construction work within the
boundaries of the District, plus the difference between the cost of an 8-inch
line and whatever size line is constructed on Cityproperty,
P P y, it being agreed
that the larger line is for District's benefit. The cost of such oversizing
will be determined by the difference between responsible low bids for con-
structing an 8-inch and the larger size line within City's Local Improvement
District.
City will bill District the costs for which District is responsible herein.
District will pay said billings to the Director of Finance, City Hall , City of
Renton, Washington on or before the end of the month during which District has
had possession of any such billing by the second Monday thereof (it being under-
stood that vouchers for payment of monthly District liabilities are considered
for approval by District's Board of Commissioners at their regular meetings on
the second Wednesday of each month.)
No such billings shall be payable by District unless accompanied by a
certificate from City's Engineer that the construction work represented thereby
has been acceptably completed by the Contractor.
5. Upon completion of said sewer line installation and acceptance thereof
by the parties, said line shall be used, operated and maintained by the District
and the City, respectively, for service of their present and future customers so
as to transfer all sewage collected by the City and District within their ;+
respective territories for delivery to the Metro trunk line and each party shall
pay its respective share therefor; no payment or service charge shall be
required by either of these parties against the other for the right and privilege
-J
of such use after payment of construction costs as herein provided.
6. City shall have the right to authorize connections to said line or any
line tributary to said line by property owners situated within the boundaries
•
of the City of Renton, King County, Washington, as they now or may hereafter
exist, and upon such terms and conditions as the City may establish for making
such connections as per City's resolutions and ordinances. City shall have the
right to authorize connections to said line or any line tributary thereto by
property owners that may hereafter annex to the City and upon such terms and
conditions as provided for by the policies, rules and regulations of the City.
7. District likewise shall have the right to authorize connections to said
line by property owners located within the boundaries of said District and upon
such terms and conditions as the District may establish. from time-to-time for
making such connections.
8. Once said sewer line has been installed and accepted from the contractor,
all costs of maintenance, repair and operation incurred for said interceptor line
shall be borne solely by the City as to that section of the line located within
the boundaries of the City; all of such maintenance, repair and operation expenses
as to the line located outside the boundaries of the City shall be borne solely
by District. Each of the parties shall be responsible for and promptly repair
and remedy any damages or defects occurring to, on or about said line within its
respective territorial jurisdiction.
9. Title and ownership of said line, upon completion and acceptance thereof, -.1
•
•
shall be in the City as to that portion thereof within City's Local
Improvement District, and in District as to the remainder.
10. The capacity of said line is agreed to be 2. 15 million
gallons per day (mgd) . District' s utilization of said line is
limited to 1. 65 mgd. and City's to . 50 mgd. , but each party
hereto warrants and guarantees the other' s right to utilize said
line for the gallonage per day to which each party is herein
limited. Whichever of the parties causes said line to exceed its
total gallonage per day shall be financially responsible for
- implementing delivery of its excess sewage to the Metro trunk line
by mutually agreeable arrangements.
. - City assumes the responsibility for measuring total daily
gallonage in the line and to promptly notify District when said
line exceeds its capacity.
11. It is further anticipated that the total cost of said
construction to be borne by District, as herein above set forth,
is approximately $120,000. 00 less any monies made available from
Federal and State grants; City agrees to advise District
of any substantial change in said estimate. District further
warrants that proper funds have been budgeted by District
for payment of the aforementioned improvements within its boundaries
and that District has lawful right to make such payments unto City
as hereinabove set forth.
A portion of all governmental grant funds received by City
in connection with construction of said line shall be credited by
City to the District' s obligations hereunder in the ratio which
District' s share of the cost of the line bears to the total cost
of the project. District will be promptly notified of the
receipt of said funds and of the amount thereof to be credited
to District. Such credits will be promptly applied by City
against District' s liabilities hereunder until exhausted. If
application of such credit results in an overpayment by District,
City will promptly reimburse District accordingly.
, 12. Each of the parties hereby agrees, in order to effectuate
the termsof this Agreement, to execute and deliver unto the other,
, whenever reasonably necessary, appropriate permits, easements and
like documents, and to co-operate with the other to assist' in
compliance. with the Washington Inter-Local Co-operation Act (RCW
39. 34 et seq) and/or any other laws applicable to the parties or
the subject matter.
13. The duration of this Agreement shall be perpetual until
- 3
mutually rescinded or amended by the parties or by a Court of -
competent jurisdiction.
IN WITNESS WHEREOF, the parties have hereto set their hands
and seals this ./10 day of c74ne, , 1975.
KING COUNTY AT•R DIS T NO. 107 CITY OF RENTON, WASHINGTON
By —1 BYC.cn�t.� ^�
Chairman '�`'9
BY /� t,:sc-e_.
( Secretar By ��`v Q -
y�eRo TEM •C4 Clerk
•
•
•
•
i_,
._I
.
Li
•
I -
EXHIBIT "A"
•
The following description located in King County, Washington described
to centerline route of the proposed Interceptor Sewer from its point of
discharge into the Trunk Sewers of the Municipality of Metropolitan Seattle
to the northerly terminus of the proposed interceptor sewer.
Beginning at the North Quarter corner of Section 32, T 24. N, R 5 E, W.M. ,
thence south 1°4.1 ' 46" West, a distance of 1098.00 feet thence North
90°00' 00" East 15.00 feet to the true point of beginning; also being existing
Metro Manhole.
1 . Thence North 1 °41 '46" E 544.00 feet
2. Thence South 88°46' 56" E 274. 00 feet
3. Thence North 0°45'49" E 1185.00 feet
4. Thence North 88°40' 56" W 322.00 feet
5. Thence North 0°47' 18" E 700.00 feet
. ., . i,
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APPENDIX C
CITY OF RENTON
RESOLUTION NO. 2764
Sanitary Sewer Moratorium
Within the South Highlands,
Maplewood, and Heather Downs
Drainage Basin
CITY OF RENTON, WASHINGTON
RESOLUTION NO.
2764
A RESOLUTION OF THE CITY OF RENTON, WASHINGTON, DECLARING
A MORATORIUM FOR CONNECTIONS TO SANITARY SEWERS WITHIN THE
SOUTH HIGHLANDS, MAPLEWOOD, AND HEATHER DOWNS DRAINAGE
BASINS.
WHEREAS, the areas within the South Highlands, Maplewood, and
Heather Downs drainage basins are undergoing rapid growth; and
WHEREAS, the South Highlands, Maplewood, and Heather Downs
areas have been determined to be areas of concern of the City for
sanitary sewer capacity; and
WHEREAS, the .City has previously defined the boundaries of the
South Highlands, Maplewood, and Heather Downs drainage basins as per
attachment "A" which is incorporated herein as if fully set forth;
and
WHEREAS, the presently existing sanitary sewers within those
basins are operating at or near capacity; and
WHEREAS, existing sewer lines have insufficient diameter and
are of insufficient slope to serve the areas of the respective
basins; and
WHEREAS, certain sewer lines within the collection systems of
each of those basins are flowing in excess of their designed
capacity; and
WHEREAS, the capacity of those sanitary sewers are periodically
exceeded in times of high rain or intensive use resulting in the
backup of untreated sewage; and
WHEREAS, such backups of untreated sewage are detrimental 'to
i '.
the public health and safety.
1
RESOLUTION NO. 2764
NOW, THEREFORE, BE IT RESOLVED BY THE CITY OF RENTON,
WASHINGTON, AS FOLLOWS :
SECTION I . Theabove recitals are found to be true and
correct.
SECTION II . There is hereby declared a moratorium on the
connection of new construction to any of the existing sewer systems
in the South Highlands, Maplewood, and Heather Downs basins . This
moratorium will be in effect until January 31 , 1992, the time when
it is estimated that the capacity of the system will be improved so
that additional connections can be allowed. This moratorium may be
extended by the City Council upon a finding that the sewer health
problems have not been adequately resolved.
SECTION III . The following properties, although covered by the
moratorium, may have available a limited exemption: j
1 . Eastway Center.
2 . Oakwood Homes . i !
3 . Old National Bank, N.E. 4th Street branch.
4 . Bakke, Inc.
5 . Forest Crest.
6 . Carner Construction (Union Avenue at S.E . 132nd) .
7 . Union Plaza. 11
,J
8 . Renton East. 1
1
9 . Crown Point II .
The above properties may be permitted to hook-up to the
South Highlands, Maplewood, and Heather Downs sewers only until 125
equivalent dwelling units (EDU' s ) have hooked up to the sewers, or
until the City Council has determined, following the Public Works
2
RESOLUTION NO. 2764
Director' s recommendation, that the sewers have reached or exceed
1 capacity. Upon the occurrence of either such Council finding or
permits being issued to construct the 125 EDU' s, no further
connections shall be permitted. In the event interim improvements
increase the available capacity, additional EDU' s will be made
available.
Available capacity, expressed in number of EDU' s , will be
assigned to applicants for building permits based on date of
application, on a "first-come first-served basis . "
The owner of a single-family dwelling unit suffering an
emergency ( i. e. , failed septic tank) or any single connection ( 1
equivalent dwelling unit) adjacent to an existing collection system
pipeline may petition the City Council for a waiver of the terms of
I^
the moratorium and for authority to connect to the sewer system.
Said connection shall not exceed one ( 1 ) EDU.
PASSED. BY THE CITY COUNCIL this 17 day of July , 1989 .
6)
Maxine E. Motor, City Clerk
APPROVED BY THE MAYOR this 17 day of July , 1989 .
cNN
1 Clymer, Mayo
Approv as to form:
Lawrence J. Wa en, City Attorney
Res .58:7-7-89 :as .
•
3
APPENDIX D
City of Renton
Municipal Code
Title VIII - Chapter 7
SEWERS
PIPELINE MATERIALS FOR THE
AQUIFER PROTECTION ORDINANCE
PIPELINE REPAIR MATERIALS FOR
AQUIFER PROTECTION
8 701 8-701
CHAPTER 7
SEWERS
j .
SECTION:
8-701: - Definitions
8-702: Use of Public Sewers Required
8-703: Private Sewage Disposal
8-704: Building Sewer Permits
8-705: Independent Sewers; Cost Of
8-706: Specifications for Building Sewers
• 8-707: Connection of Building Sewer to Public Sewer
8-708: Inspection
8-709: Precautions While Building
8-710: Use of Public Sewers
8-711: Grease, Oil and Sand Interceptors •
8-712: Preliminary Treatment of Waste Matter
8-713: Manholes
8-714: Examination of Water and Sewage
8-715: Sewer Charges
8-716: Billings and Collections
8-717: Charges for Property Not Previously Assessed
8-718: Facility and Trunk Connection Charges (Rep. by Ord. 3547, 5-18-81)
8•-719: Public Sewer Extension
8-720: Public Sewer Specifications
8-721 : Penalties for Violations of Regulations
8-701: DEFINITIONS: Unless the context specifically indicates otherwise,
the meaning of terms used in this Chapter shall be as follows:
"Sewage Works" shall mean all facilities for collecting, pumping, treating, and
disposing of sewage.
"Sewage" shall mean a combination of the water-carried wastes from residences,
business buildings, institutions, and industrial establishments, together with such
ground, surface, and storm waters as may be present.
"Sewer" shall mean a pipe or conduit for carrying sewage. (Ord. 2173, 8-16-65)
"Public Sewer" shall mean that portion of a sanitary sewer and its appurtenances
located on property, easements and rights of way held, owned, controlled and
accepted by the City or other public authority. (Ord. 3055, 8-9-76)
589
8-701 8-701
"Combined Sewer" shall mean a sewer receiving both surface runoff and sewage.
"Sanitary Sewer" shall mean a sewer which carries sewage and to which storm, surface,
and ground waters are not intentionally admitted.
"Storm Sewer" and "Storm Drain" shall mean a sewer which carriessstorm and surface
waters and drainage, but excludes sewage and polluted industrial wastes.
'. i
"Sewage Treatment Plant" shall mean any arrangement of devices and structures used
for treating sewage.
"Industrial Wastes" shall mean the liquid wastes from industrial process as distinct
from sanitary sewage.
"Garbage" shall mean solid wastes from the preparation, cooking, and dispensing of
food, and from the handling, storage, and sale of produce.
"Properly Shredded Garbage" shall mean the wastes from the preparation, cooking,
and dispensing of food that has been shredded to such degree that all particles will be
. carried freely under the flow conditions normallyprevailinginpublic sewers, with no
particle greater than one-half inch (1/2") in any dimension.
"Building Drain" shall mean that part of the lowest horizontal piping of a drainage
system which receives the discharge from soil, waste, and other drainage pipes inside
the walls of the building and conveys it to the building sewer, beginning five feet (5')
outside the inner face of the building walls.
"Building Sewer" shall mean the extention from the building drain to the public sewer
• or other place of disposal.
"pH" shall mean the logarithm of the reciprocal of the weight of hydrogen ions in
grams per liter of solution.
"B.O.D." (denoting Biochemical Oxygen Demand) shall mean the quantity of oxygen
utilized in the biochemical oxidation of organic matter under standard laboratory
procedure in five (5) days at twenty degrees (20° ) C., expressed in parts per million by
weight.
"Suspended So lids" shall mean solids that either float on the surface of, or are in
suspension in water, sewage, or other liquids; and which are removable by laboratory
filtering. ,.
"Natural Outlet" shall mean any outlet into a watercourse, pond, ditch, lake or other
body of surface or ground water. (-
"Watercourse" shall mean a channel in which a flow of water occurs either
1
continuously or intermittently. (Ord. 2173, 8-16-65)
"City Comprehensive Sewerage Plan" shall mean the complete engineering report
and plans that guide planning and construction of all new sanitary sewer facilities.
,_1
589
P1� r 1 -
`.1 Nov - EL ._., MA1 - - aL r,4-4�RN�.. .._._S - - -- - - -
City of Renton, Washington •
PIPE DIAMETER 1 I CONSIDERATIONS
PIPE MATERIAL I <4 4-8 10-12 14-20 24-30 36-54 I SUGGESTED MATERIAL SPEC 1 (See Table 2) . '
I I
Ductile Iron, Rubber Gaskets I 1 1
Cement Mortar-Lined I 1,2 1,2 1,2 1,2 1 ,2 I AWWA C151 , C104 1 a b c d v w z
Polyethylene-Lined 1 1,2 1,2 1,2 1,2 1,2 1 AWWA C151 I a b c d v w z
Ductile Iron, Viton Gaskets I 1 I
Cement Mortar-Lined 1 1,2 1,2 1,2 1,2 1,2 1 AWWA C151, C104 I b c d i v w z
Polyethylene-Lined I 1 ,2,3 1 ,2,3 1,2,3 1,2,3 1 AWWA C151 I b c d e i v w z
1 I 1
Welded Steel , Rubber Gaskets 1 I I
Cement Mortar-Lined I 1,2 .1,2 1,2 1,2 1,2 I AWWA C200, C205 I a b f g h v w z
Dielectric-Lined 1 1,2 1,2 1,2 1,2 1,2 1 AWWA C200, C210 I a b f g h v w z
Welded Steel , Welded Joints I 1 1
Cement Mortar-Lined I 1,2 1,2 I AWWA C200, C205 I f g h v w z
Dielectric-Lined I 3 I AWWA C200, C210 I f g h v w z
I 1
PVC, Rubber Gasket Joints I I I
SDR-35 Sewer Pipe 1 1,2 1,2 1,2 1 ASTM D3034 I a b m n o v w z
Blue Brute Cl 150 or 200 I 1,2,3 1,2,3 I AWWA C900 I a b o g v w z
PVC, Viton Gasket Joints I I 1
SDR-35 Sewer Pipe 1 1,2 1,2 1,2 1 ASTM D3034 1 b i m n o v w z
'Blue Brute Cl 150 or 200 1 1,2,3 1,2,3 1 AWWA C900 1 b o g v w z
PVC, Solvent Welded Joints I 1 I
Sch 80 1 2,3 1 ,2,3 1 ,2,3 1 ASTM D1784, D1785 I h o p g v w z
1 I
High Density Polyethylene 1 1 1
Thermal-Fusion Joints 1 2,3 1,2,3 1,2,3 1,2,3 1,2,3 1,2 1 ASTM D3350 I h i o v w z
1 1 I
Concrete, Rubber Gasket Jts I I1
Standard Concrete Lining I I ASTM C76 I a b k 1 m v w z
With Insituform Lining I 1,2,3 1,2,3 1,2,3 1,2,3 1,2 I ASTM C76, D638 I h r v x w z
With HDPE Insert 1 1,2,3 1,2,3 1,2,3 1,2,3 1,2 1 ASTM C76, D3350 I h i v w z
1 1
Conc Cylinder, Rubber Gasket 1 1 1
Std Cement Mortar Lining I 1,2 1,2 1 AWWA C301, C303 I a b f g k v w z
With Insituform Lining 1 1,2,3 1,2,3 1,2,3 1,2,3 1,2 1 AWWA C301, C303 I g h r v x w z
With HDPE Insert 1 1,2,3 1,2,3 1,2,3 1,2,3 1,2 1 AWWA C301, C303, ASTM D3350 1 g h i v w z
1
Fiberglass, W/ Welded Joints I 2,3 1 a 1 o v w x y z
1 1 1
Insituform Liner 1 4,5 4,5 4,5 4,5 4,5 1 ASTM D638 1 h r v w x z
HDPE Insert I 4,5 4,5 4,5 4,5 4,5 4,5 i ASTM F585 I h i v w z
I 1
PIPELINE SERVICE
1. Storm Sewer
2. Sanitary Sewer
3. Leachate Pipeline. •
4. Rehab Existing Storm Sewer
5. Rehab Existing Sanitary Sewer
•
TABLE 2
CONSIDERATIONS ON SELECTION OF PIPE MATERIALS
The following considerations are to be used in conjunction
with Table 1 for tentative selection of pipe materials.
a. Rubber gaskets may be severely damaged by petroleum
products, particularly in prolonged exposures to
concentrated flows containing little or no storm water
or sanitary sewage.
b. Gasketed joints are not considered leak-proof at zero or -'
low pressures, and may not be leak-proof at higher
pressures.
c. Mechanical joints may be less likely to leak at low
pressures than push-on joints.
d. May need protective coatings and/or cathodic protection
against external corrosion.
e. Considered most reliable gasket and lining material for
ductile iron leachate pipeline.
f. Very difficult to repair linings on inside of joints in
pipe smaller than 24-inch diameter.
g. Almost always needs protective coatings and cathodic
protection against external corrosion.
h. Properly made joints are considered leak-proof.
i. Polyethylene, although corrosion resistant, can be
severely affected by prolonged exposures to petroleum
products.
j . Viton (or nitrile) gaskets may require long delivery
time.
k. Concrete pipe not recommended without "liquid-tight"
lining of another material.
1. Potential to develop leaks at joints due to structural
or gasket failures.
m. Limited to low pressure applications.
n. Pipe not available over 15-inch diameter.
•
o. Requires special attention to bedding and backfill depth
to avoid structural failure of pipe.
p. Large thermal expansion coefficient. May need to limit
solvent welded joints to 4-inch and smaller pipe. May
require careful evaluation of pipe installation
temperature and temperature of piped liquids to ensure
joint integrity.
q. Pipe not available over 12-inch diameter.
r. Insituform lining is available in 6-inch through 60-inch
diameter for almost any pressure, if sufficient pipe
cross-sectional area is available
s-u. Not used.
v. Suitability of pipe lining and gasket material to resist .
chemical attack by conveyed fluids must be determined
for each pipeline service considered.
w. All storm and sanitary sewer manholes, catch basins, and
inlets should be equipped with precast concrete bottom
and sidewalls with rubber gasketed joints between
sections, water-tight epoxy grout pipe entrances through
walls, and bitumastic coating of all interior floor and
wall surfaces. Manholes, catch basins, and inlets
should have no leakage when hydrostatically tested at ,
atmospheric pressure.
x. Has good resistance to chemicals, petroleum products,
and hydrogen sulfide corrosion.
y. Not recommended for buried applications due to limited
experience and high cost.
z. "Zero leakage" test requirement may be impossible to
achieve under the best conditions for any pipe material
because trapped air may distort test results, even in a
drop-tight pipe. Pressure and leakage test requirements
should consider whether the pipe has steep slope or will
stand full of liquid. Pipelines should be tested with
the intent to prevent or minimize leakage. Air testing
should not be allowed; hydrostatic testing should be as
stringent as any found in the industry.
Pipe materials, without regard for chemical attack,
corrosion, or puncture, are generally ranked as follows,
in decreasing order of liquid-tight reliability:
welded steel with welded joints
high density polyethylene with thermal-fusion
joints
PVC with solvent welded joints
fiberglass with welded joints
Insituform liner
ductile iron with viton or rubber gaskets
concrete cylinder with gasketed joints
welded steel with rubber gasketed joints
PVC with viton or rubber gasketed joints
concrete pipe with rubber gasketed joints
8-701 8-702
"Side Sewer" shall mean that portion of the public sewer between primary
collection lines and individual property lines.
"Infiltration and Inflow" shall mean the combined volume of both infiltration and
inflow water found in existing sewer systems.
"Infiltration" shall mean the volume of water or ground water entering sewers and
building sewer connections from the soil through defective joints, broken or cracked
pipe, improper connections or other structural failures.
"Inflow" shall mean the volume of water discharged into sewer lines from surface
sources such as roof drains, cellar and yard area drains, foundation drains, swamp
and spring water drains, and all other accidental or deliberate discharges of surface
water.
"FWPCA" shall mean the Federal Water Pollution Control Act of 1956, PL 84-660,
together with the Amendments of 1966, 1972, and as same may be hereafter
amended; Public Law 92-500 and all subsequent amendments thereto. (Ord. 3055,
8-9-76)
8-702: USE OF PUBLIC SEWERS REQUIRED: •
(A) It shall be unlawful for any person to place, deposit or permit to be deposited
in any insanitary manner upon public or private property within the City, or in
any area under the jurisdiction of said City, any human or animal excrement,
garbage, or other objectionable waste.
(B) It shall be unlawful to discharge to any natural outlet within the City, or in any
area under the jurisdiction of said City, any sanitary sewage, industrial wastes,
or other polluted waters, except where suitable treatment has been provided in
accordance with subsequent provisions of this Chapter.
(C) Except as hereinafter provided it shall be unlawful to construct or maintain
any privy, privy vault, septic tank, cesspool, or other facility intended or used
for the disposal of sewage. (Ord. 2173, 8-16-65)
f (D) The owner of each house, building or property used for human occupancy,
_ employment, recreation or other purpose, situated within the City and abutting
on any street, alley or right of way in which there is now located or may in
the future be located a public sanitary or combined sewer of the City in which
said public sewer is within two hundred feet (200') of the property line and
which has been determined to be a health hazard by the City or the Seattle-
King• County Health Department, or its successor agencies, or which has
participated and been included in a Local Improvement District, is hereby
required at his expense to install suitable toilet facilities therein and to
connect such facilities directly with the proper public sewer in accordance
.
988
8-702 8-703
D) with the provisions of this Chapter, within ninety (90) days after date of official
notice to do so. Nothing herein shall require any such owner to connect with
said sanitary or combined sewer when such sewer is installed by a developer
for the purpose of meeting platting requirements and said owner is not within
the confines of said plat. (Ord. 3440, 6-23-80)
8-703: PRIVATE SEWAGE DISPOSAL:
1. Where a public sanitary or combined sewer is not available under the
provisions of this Chapter, the building sewer shall be connected to a private
sewage disposal system complying with the provisions of this Chapter.
2. Before commencement of construction of a private sewage disposal system
the owner shall first obtain a written permit signed by the Utilities Engineer.
The application for such permit shall be made on a_form furnished by the City,
which the applicant shall supplement by any plans, specifications and other
information deemed necessary by the Utilities Engineer. A permit and inspection - _
fee of ten dollars ($10.00) shall be paid to the Director of Finance at the time
the application is filed. (Ord. 2801, 9-24-73; amd. Ord. 2845, 4-15-74)
3. A permit for a private sewage disposal system shall not become effective
until the installation is completed to the satisfaction of the Utilities Engineer.
He shall be allowed to inspect the work at any stage of construction and, in
any event, the applicant for the permit shall notify the Utilities Engineer when I
the work is ready for final inspection, and before any underground portions I
are covered. The inspection shall be made within forty eight (48) hours of the
receipt of notice by the Utilities Engineer whenever possible. (Ord. 2801,
9-24-73; amd. Ord. 2847, 5-6-74)
4. The type, capacities, location and layout of a private sewage disposal system
shall comply with all recommendations of the Seattle-King County Health
Department. Field tests and a site survey shall be made before any permit is
issued for any private sewage disposal system employing subsurface soil
absorption facilities. No septic tank or cesspool shall be permitted to discharge [:
to any public sewer or natural outlet. (Ord. 2801, 9-24-73)
5. Pursuant to RCW 35.67.190, all property owners within the area served
by a sewerage system shall be compelled to connect their private drains and
sewers with the sewerage system, or suffer a penalty. Connection to the public .,.�
sewer system shall not be compulsory except under those situations detailed
in Washington Administrative Code chapter 248-96, subsection 060, as may
be amended from time to time, or City Code Section 8-702(D). Any property ,1
owner not compelled to connect to the sewerage system and choosing not
to connect to the City sewerage system shall be penalized an amount equal
to the charge that would be made for sewer service if the property was
connected to the sewerage system. All such penalties shall be considered
revenue of the sewerage system. After connection to the sewerage system,
all septic tanks, cesspools and similar private sewage disposal facilities shall
be abandoned and filled with suitable material, provided however, the owner
of the subject premises may suitably clean the septic tank to utilize same and
any adjoining drain fields system for the proper disposal of storm waters. (Ord.
4169, 8-15-88)
988
8-703 8-704
6. The owner shall operate and maintain the private sewage disposal facilities
in a sanitary manner at all times, at no expense to the City.
7. No statement contained in this Chapter shall be construed to interfere
with any additional requirements that may be imposed by the Health Officer.
(Ord. 2801, 9-24-73)
8-704: BUILDING SEWER PERMITS:
(A) No unauthorized person shall uncover, make any connections with or openings
into, use, alter or disturb any public sewer or appurtenance thereof without
first obtaining a written permit from the Utilities Engineer or his duly
authorized representative. Permission to make connection to the public sewer
shall consist of either
1. A developer extension agreement, wherein permission is granted to make an
extension to a public sewer, or
2. A building sewer permit, wherein permission is granted to make a connection
from private property to a public sewer.
(B) A building sewer permit shall include permission to construct a side sewer
whenever it is required to complete connection.
(C) There shall be three (3) classes of building sewer permits:
1. For residential service;
2. For commercial service; and
3. For industrial service.
(D) In each case the owner or his duly authorized agent or representative shall make
application in writing on a special form furnished by the City for said purposes.
The permit application shall be supplemented by any plans, specifications or
other information considered pertinent in the judgment of the Utilities Engineer
or his duly authorized representative. The permit and inspection fees shall be
as follows:
1. The sum of twenty dollars ($20.00) for a residential building sewer permit.
2. The sum of fifty dollars ($50.00) for a business or commercial building
sewer permit.
3. The sum of one hundred dollars ($100.00) for an industrial building sewer
permit.
•
_. ' 4. The sum of five dollars ($5.00) for a permit for the necessary repair of any
of the above sewer connections.
and all such fees shall be paid to the Director of Finance or his duly designated
representative at the time the application for such permit is filed.
(E) In addition to other permits and fees, there will be an inspection/approval fee
_for on-site replacement and improvements which shall be identical to that
specified in Chapter 8, Title IX of Ordinance No. 1628 and any subsequent
amendments thereto. (Ord. 3832, 8-13-84)
•
884
8-705 8--706
8-705: INDEPENDENT SEWERS; COST OF: A separate and independent
building sewer shall be provided for every building; except where one
building stands at the rear of another on an interior lot and no private sewer is available
or can be constructed to the rear building through an adjoining alley, court, yard,.or
driveway, the building sewer from the front building may be extended to the rear
building and the whole considered as one building sewer. (Ord. 1552, 6-12-56)
Old building sewers may be used in connection with new buildings only when they are
found, on examination and tests by the Utilities Engineer, to meet all requirements of
this Chapter. (Ord. 1552, 6-12-56 amd. Ord. 2847;5-6-74) •
All costs and expense incident to the installation and connection of the building sewer
shall be borne by the owner or'applicant of the premises in question. The owner shall
indemnify the City against any loss or damage that may directly or indirectly be
occasioned by the installation of the building sewer. (Ord. 1552, 6-12-56)
8-706 as amended: SPECIFICATIONS FOR BUILDING SEWERS: The building
sewer shall be cast iron soil pipe, ASTM specification A74-42 or
equal; vitrified clay sewer pipe, ASTM spec. C13-44T, PVC plastic pipe ASTM spec.
D3034 or equal, or other suitable material approved by the Utilities Engineer. Joints
shall be tight and waterproof. Any part of the building sewer that is located within
ten feet (10') of a water service pipe shall be constructed of cast iron soil pipe with
push-on rubber gasket joints. Cast iron pipe with push-on rubber gasket 'joints may
be required by the Utilities Engineer where the building sewer is exposed to damage
by tree roots. If installed in filled or unstable ground, the building sewer shall be of ' --_.l
cast iron or Ductile iron pipe with push-on rubber gasketed joints.
The size and slope of the building sewer shall be subject to the 'approval of the
Utilities Engineer, but in no event shall the diameter be less than six inches (6").
The slope of such six inch (6") pipe shall be not less than one-eights inch (1/8") per
foot.
Whenever possible the building sewer shall be brought to the building at an elevation
below the basement floor. No building sewer shall be laid'parallel to or within three
feet (3') of any bearing wall, which might thereby be weakened. The depth shall be
sufficient to afford protection from frost. The building sewer shall be laid at
uniform grade and in straight alignment insofar as possible. Changes in direction
shall be made with properly curved pipe and fittings.
In all buildings in which any building drain is too low to permit gravity flow to the
public sewer, sanitary sewage carried by such drain shall be lifted by approved
artificial means and discharged to the building sewer.
All excavations required for the installation of a building sewer shall be open trench
work unless otherwise approved' by the Utilities Engineer. Pipe laying and back fill
shall be performed in accordance with ASTM spec. C12-19 and APWA spec. Sect. 60 yi
except that no back fill shall be placed until the work has been inspected.
976
8-706 8-709
All joints and connections shall be made gastight and watertight, and installed in
accordance with APWA spec. 62-3.98A.
Clay pipe joints shall be in conformance with ASTM C-425. Concrete pipe joints
shall conform with ASTM C-443. Ductile and cast iron pipe push-on joints shall
conform with ANSI A-21.11. PVC pipe joints shall conform with ASTM D 2680.
Other jointing materials and methods may be used only by written approval of the
Utilities Engineer. •
•
8-707 as amended: CONNECTION OF BUILDING 'SEWER TO PUBLIC
SEWER: The connection of the building sewer into the public sewer
shall be made at the "Y" branch, if such branch is available at a suitable location.
If the public sewer is twelve inches (12") in diameter or less, and no properly located
"Y" branch is available, the owner shall at his expense install a "Y" branch in the
public sewer at the location specified by the Utilities Engineer. The new "Y" branch
shall be installed with a cast iron double strap sewer saddle tee with the existing pipe
drilled and rasped open. Where the public sewer is greater than twelve inches (12")
in diameter, and no properly located "Y" branch is available, a neat hole may be
drilled into the public-sewer to receive the building sewer, with entry in the down-
stream direction at an angle of about forty five degrees (45°). A forty five degree
(45°) ell may be used to make such connection, with the spigot end cut so as not to
extend past the inner surface of the public sewer. The invert of the building sewer
at the point of connection shall be at the same or at a higher elevation than the invert
of the public sewer. A smooth, neat joint shall be made and the connection made
secure and watertight by encasement in concrete. Special fittings may be used for
the connection when approved by the Utilities Engineer. (Ord. 3055, 8-9-76)
8-708: INSPECTION: The applicant for the building sewer permit shall
notify the Utilities Engineer when the building sewer is ready for
inspection and connection to the public sewer. The connection shall be made under the
supervision of the Utilities Engineer or his representative.
8-709: PRECAUTIONS WHILE BUILDING: All excavations for building
sewer installation shall be guarded with barricades and lights and such
other precautions as are reasonably adequate to protect the public from accident and
injury. Streets, sidewalks, parkways and other public property disturbed in the course
of the work shall be restored in a manner satisfactory to the City.
A surety bond in an amount deemed sufficient and determinedbythe Utilities Engineer,
but in no event less than five hundred dollars ($500.00), shall be furnished and
deposited with the City to indemnify the City against any loss, damage, liability in
connection with such sewer work. •
45q-RFg•1m1•77a•47A
8-710 8-710
8-710: USE OF PUBLIC SEWERS: No person shall discharge or cause to be
discharged any storm water, surface water, ground water, roof run-off,
subsurface drainage, cooling water or unpolluted industrial process waters to any
sanitary sewer. Storm water and all other unpolluted drainage shall be discharged to
such sewers as are specifically designated as combined sewers or storm sewers, or to a
natural outlet approved by the Utilities Engineer.Industrial cooling water or unpolluted
process waters may be discharged, upon approval of the Utilities Engineer, to a storm
sewer combined sewer or natural outlet.
Except as hereinafter provided, no person shall discharge or cause to be discharged any
of the following described waters or wastes to any public sewer:
(A) Any liquid or vapor having a temperature higher than one hundred fifty degrees
(150°) F.
(B) Any water or waste which may contain more than one hundred (100) parts per
million, by weight, of fat, oil or grease.
(C) Any gasoline,. benzene, naphtha, fuel oil, or other flammable or explosive
liquid, solid or gas.
(D) Any garbage that has not been properly shredded.
(E) Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar,
plastics, wood, paunch manure, or any other solid or viscous substance capable
of causing obstruction to the flow in sewers or other interference with the
proper operation of the sewage works.
(F) Any waters or wastes having a pH lower than five and five-tenths (5.5) or
higher than nine (9.0) or having any other corrosive property capable of
causing damage or hazard to structures, equipment, and personnel of the
sewage works.
(G) Any waters or wastes containing a toxic or poisonous substance in sufficient
quantity to injure or interfere with any sewage treatment process, constitute a
hazard to humans or animals, or create anyhazard in the receivingwaters ters of
the sewage treatment plant.
(H) Any waters or wastes containing suspended solids of such character and
quantity that unusual attention or expense is required to handle such materials
at the sewage treatment plant.
( I) Any noxious or malodorous gas or substance capable of creating a public
nuisance.
459;564;1164;865;774
8-711 8-712
8-711: GREASE, OIL AND SAND INTERCEPTORS:' Grease, oil and sand
interceptors shall be provided when, in the opinion of the Utilities
Engineer, they are necessary for the proper handling of liquid wastes containing grease
in excessive amounts, or any flammable wastes, sand, and other harmful ingredients;
except that such interceptors shall not be required for private living quarters or
dwelling units. All interceptors shall be of a type and capacity approved by the Utilities
Engineer, and shall be so located as to be readily and easily accessible for cleaning and
inspection.
Grease and oil interceptors shall be constructed of impervious materials capable of
withstanding abrupt and extreme changes in temperature. They shall be of substantial
construction, watertight, and equipped with easily removable covers which when.
bolted in place shall be gastight and watertight. Where installed, all grease, oil and sand
interceptors shall be maintained by the owner, at his expense, in continuously
efficient operation at all times. (Ord. 1552, 6-12-56 amd. Ord. 1847, 5-6-74)
(A) Grease and oil interceptors shall be required on all restaurants, garages and
gas station premises and shall be so situated as to intercept only the sources
of grease and oil wastes but excluding domestic or human wastes. (Ord.
3055, 8-9-76)
8-712: PRELIMINARY TREATMENT OF WASTE MATTER: The admission
into the public sewers of any waters or wastes having (a) a five (5) day
Biochemical Oxygen Demand greater than three hundred (300) parts per million by
weight, or (b) containing more than three hundred fifty (350) parts per million by
weight of suspended solids, or (c) containing any quantity of substances having the
characteristics described in certain Sections of this Chapter, or (d) having an average
daily flow greater than two percent (2%) of the average daily sewage flow of the City,
shall be subject to the review and approval of the Utilities Engineer. Where necessary in
the opinion of the Utilities Engineer, the owner shall provide, at his expense, such
preliminary treatment as may be necessary to, (a) reduce the Biochemical Oxygen
Demand to three hundred (300) parts per million and the suspended solids to three
hundred fifty (350) parts per million by weight, or (b) reduce objectionable
characteristics or constituents to within the maximum limits provided for in certain
Sections of this Chapter, or (c) control the quantities and rates of discharge of such
waters or wastes. Plans, specifications, and any other pertinent information relating to
proposed preliminary treatment facilities shall be submitted for the approval of the
Utilities Engineer and the Department of Ecology of the State of Washington and no
construction of such facilities shall be commenced until said approvals are obtained
in writing. (Ord. 1552, 6-12-56 amd. Ord. 1847, 5-6-74 amd. Ord. 3055, 8-9-76)
Where preliminary treatment facilities are provided for any waters or wastes, they shall
be maintained continuously in satisfactory and effective operation, by the owner at his
expense.
No statement contained in this Chapter shall be construed as preventing any special
agreement or arrangement between the City and any industrial concern whereby an
industrial waste of unusual strength or character may be accepted by the City for
treatment, subject to payment therefor by the industrial concern.
589
8-713 8-715
8-713: MANHOLES: When required by the Utilities Engineer, the owner of any
property served by a building sewer carrying industrial wastes shall
install a suitable control manhole in the building sewer to facilitate observation,
. sampling and measurement of the wastes. Such manhole, when required, shall be
accessibly and safely located, and shall be constructed in accordance with plans
approved by the Utilities Engineer. The manhole shall be installed by the owner at his
expense, and shall be maintained by him so as to be safe and accessible at all times.
8-714: EXAMINATION OF WATER AND SEWAGE: All measurements, tests
and analyses of the characteristics of water and wastes to which
reference is made in this Chapter, shall be determined in accordance with Standard
Methods for the Examination of Water and Sewage, and shall be determined at the
control manhole, or upon suitable samples taken at. said control manhole. In the event
that no special manhole has been required, the control manhole shall be considered to
be the nearest downstream manhole in the public sewer to the point at which the
building sewer is connected.
The Utilities Engineer and other duly authorized employees of the City bearing proper -
credentials and identification shall be permitted to enter upon all properties for the
purposes of inspection, observation, measurement, sampling and testing,.in accordance
with the provisions of this Chapter. (Ord. 1552, 6-12-56; amd. Ord. 1847, 5-6-74)
8-715: SEWER CHARGES: •
(A) The monthly rates and charges for sewage disposal service shall be as follows:
1. Single family dwelling units: Four dollars ninety cents ($4.90).
2. All other users: A charge of four dollars ninety cents ($4.90) per month for
each nine hundred (900) cubic feet of water used by apartments, multiple
dwelling units of every type and number, business, commercial, industrial and
all other users.
1
3. Charges for sewer service without City water: In the event that water I
obtained from sources other than purchased from the City is either discharged
or drained into the sewer system, single family dwellings and other users shall
be charged by one of the two (2) following methods:
a. Fifteen dollars thirty five cents ($15.35) per single family residence.
(Includes $10.45 Metro charge). _
b. Other than single-family dwellings, the Director of Public Works shall install
a water meter into such private water system at cost to property owners and
the method of billing shall be in compliance with Section 8-715(A)2. (Ord.
4194, 12-12-88, eff. 1-1-89)
(B) Whenever the use of water is such that a portion of the water used does not '
flow into the City sewer system but is lost by evaporation or used in irrigation,
-'I
•
8-715 - 8-715
B) manufacturing or any other use, and the person in control provides proof of this
fact, such person may apply for the installation of a separate sewer exempt
meter to measure the amount of water so used or lost and no charge shall be
made for sewage because of water so used or lost. A sewer exempt meter
application will be made in the same manner as a regular water meter
installation. All sewer exempt meters shall be located at the property line or
adjacent to the regular meter; provided, however, an evaporation exemption
may be granted to coin-operated and commercial laundries without the
installation of a submeter. Such exemption shall be an eleven percent (11%)
reduction in chargeable water consumption for commercial and industrial
laundries and a three percent (3%) reduction in chargeable water consumption
for coin-operated laundries.
(C) Upon application made to the City Council by any municipal or quasi-municipal
corporation including school, hospital or fire district, County of King, or similar
public entity, for sewer services outside the City limits and upon approval of
hook-up or connection therefor by the City Council, the rates to such special
users shall be one and one-half (114) times the basic rates applicable to
resident users for similar services, plus all other charges (including hook-up,
connection and fees levied or assessed by "Metro") applicable to such
services. (Ord. 3055, 8-9-76)
(D) In addition to the foregoing charges specified in this Section, the following rates
shall be charged:
1. A charge of ten dollars forty five cents ($10.45) per month, payable to Metro
for each single-family dwelling unit.
2. A charge of ten dollars forty five cents ($10.45) per month, payable to Metro
for each nine hundred (900) cubic feet of water used by apartments, multiple
dwelling units of every type and number, business, commercial, industrial and
all other users. (Ord. 4194, 12-12-88, eff. 1-1-89)
3. Any additional charges hereafter imposed by Metro under the "Industrial Cost
Recovery" or "Industrial Waste Surcharge" programs required under the FWPCA
(PL 92-500), section 204, or as same may be amended hereafter plus fifteen
percent (15%) thereof as an additional charge for the City's cost of
• implementing such programs.
4. The following persons are eligible to receive their water and sewer services
for one dollar ($1.00) per month, for the first nine hundred (900) cubic feet of
water per month ($.75 per month for water/$.25 per month for sewer). Any
excess shall be charged as provided in Section 8-1413(B) of Chapter 14,
Water, of Title VIII (Health and Sanitation) relating to water services.
(a) Every single person, sixty two (62) years of age or older, and every
single person totally and permanently disabled, residing in a single-family
- dwelling, that is separately metered for water usage, either as owner,
purchaser, or renter, whose income from all sources is seven hundred twenty
seven dollars fifty cents($727.50) per month or less, and eight thousand seven
hundred thirty dollars ($8,730.00) per annum or less, or as amended.
589
8-715 8-715
D,4) (b) In the case of marital community, both parties, husband and wife,
residing in a single-family dwelling, either as owenr, purchaser, or renter, and
(1) Both spouses being sixty two (62) years of age or older, or
(2) One spouse is totally and permanently disabled and the other
spouse is over sixty two (62) years of age, or
(3) Both spouses are totally and permanently disabled
whose total income from all sources is one thousand ninety one dollars thirty
four cents ($1,091.34) per month, or less, and thirteen thousand ninety six
dollars eight cents ($13,096.08) per annum or less, or as amended.
(c) In order to qualify for reduced utility charges an affidavit of eligibility must
be filed with the utility office accompanied by a copy of the most recent
income-tax return or the most current two (2) month bank statements. If the
applicant is filing as a disabled person, the application must be accompanied by
an attending physician's statement verifying disability. For those parties who are
renters, the application must include an executed lease agreement which
specifies the term of the lease and that the lessee is responsible for the
payment of the utilities. (Ord. 4213, 4-24-89)
(E) Every such person, (if married, then either spouse) shall file with the Utilities
Department of the City, his or her statement, under oath, that he, she or they
are qualified to be charged a special rate for such utility services hereinabove
set forth and such statement to contain such other information as the Utilities
Engineer may prescribe including residence address, ownership or interest in
dwelling occupied by such applicant or applicants, the amount, source and
nature of all income from any and all sources, together with the applicant's
unqualified promise to forthwith notify the City of any circumstances or change
in condition which would make the applicant or applicants ineligible to receive
said special rates.
All of such information shall be treated in confidence and all such applications
and statements shall only be available for inspection by authorized personnel of
the City. The Utilities Engineer shall have, the right, whenever he deems it
necessary to require such statement on an annual basis.
(F) Whenever the use of the public sewer is such that infiltration and/or inflow is
evident from a private sewage facility, or a building sewer, where the sewer
flow is two (2) times in excess of the daily metered water, the Utilities Engineer
shall install a sewage meter and charge the regular monthly rates and charges
for customers in that class, for all infiltration and inflow and sewage that it
discharged into the public sewers. All costs and expenses incident to the
installation and connection of the sewer meter shall be borne by the owner or
applicant of the premises in question. (Ord. 3055, 8-9-76)
•
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589
•
8-715 8-716
(G) Charges for Storm Drainage Utility: The following schedule is hereby adopted
as the monthly charges to be paid to the City for storm drainage utility services:
1. Single family dwelling: $ 2.50
2. Low intensity: 12.39 per acre
3. Medium intensity: 17.92 per acre
4. High intensity: 23.11 per acre
5. Gravel pits: 24.92 per acre
6. City streets: 12.44 per acre
(Ord. 4104, 12-12-87, eff. 1-1-88)
The following are hereby established for certain senior citizens who are
economically disadvantaged as herein set forth:
Every single person sixty two (62) years of age or older and every single
person totally and permanently disabled residing in a single-family dwelling,
either as owner or purchaser, whose income from all sources is seven hundred
twenty seven dollars fifty cents ($727.50). per month or less and eight thousand
seven hundred thirty dollars ($8,730.00) per annum or less or, in the case of
marital community, both parties, husband and.wife, residing in a single-family
dwelling, either as owner or purchaser, and both spouses being sixty two (62)
years of age or older whose total income from all sources is one thousand
ninety one dollars thirty nine cents ($1,091.39) per month or less and thirteen
thousand ninety six, dollars eight cents (13,096.08) per annum or less shall pay
the following rate for storm drainage service relating to such single-family
dwelling in which such eligible person or persons permanently reside:
$1.00 per month. (Ord. 4194, 12-12-88, eff. 1-1-89)
8-716: BILLINGS AND COLLECTIONS: All bills for sewer disposal service as
set forth in this Chapter or as same may be amended from time to
time, shall become due and payable at the office of the Director of Finance, or such
other place as the City may designate, not later than fifteen (15) days from date of
billing. If not so paid, any such account shall thereupon become delinquent.
If no timely payment is made as herein set forth and the account thus becomes
delinquent, the Director of Finance, or her duly authorized representative shall mail to
- the user a notice in writing, postage prepaid and mailed to the last known address of
such user, that if such delinquent sewer charges are not paid forthwith, the Utilities
Engineer shall be directed to cut off the water service to the premises and to enforce
the lien upon the property to which such service has been rendered and such lien shall
•
r .
589
8-716 8-716
be superior to all other liens or,encumbrances except those for general taxes and - -
special assessments. Such liens may be foreclosed by the City in the manner provided
by law for the enforcement of the same, and for delinquent sewer charges, in addition
to all other remedies permitted. There will be an additional sum of ten dollars ($10.00)
charged for the expense of turning the water off and on. Any such water service cut off
shall remain disconnected until all charges to the City plus penalties, together with the
additional sum of ten dollars ($10.00) for turning the water on, shall have been paid.
In lieu of any notice by mail, the Utilities Engineer or the Director of Finance, or their
duly authorized representatives, may cause a delinquent sewer charge notice to be
served personally upon such user or occupant. Failure to receive mail properly
addressed to such user or occupant shall not be a valid defense for failure to pay any
such delinquent charges. Any change in ownership of property or change In mailing
address must be properly filed in writing with the office of the Director of Finance within
fifteen (15) days after such change of status. (Ord. 2847, 5-6-74)
(See following page for Section 8-717)
1
589
8-717 8-717
8-717: CHARGES FOR PROPERTY NOT PREVIOUSLY ASSESSED:
(A) The special connection charge imposed shall be paid into the Waterworks Utility
Construction Fund.
The charge shall be paid in cash whenever such connection is requested, or
application may be made by such property owner to provide for the payment
thereof by an installment contract if the amount is in excess of five hundred
dollars ($500.00), with interest at the rate of ten percent (10%) per annum,
computedannually on unpaid balances, which contract shall provide for a
minimum down payment of not less than ten percent (10%) of such total
connection charges hereinabove set forth, payable upon execution of such
contract and the balance thereof to be paid in not more than twenty (20)
quarterly installments payable on each January 1, April 1, July 1, and October
1. Such installment contracts shall provide that any unpaid balance may be paid
in full in any year at the time the first quarterly payment of such year is due
and payable, shall describe the property served by the water, and shall be duly
acknowledged by the property owner and be recorded by the Public Works
Director in the office of the County Auditor at the expense of such property
owner. Delinquent payments under such installment contracts shall be a lien
upon the described property as provided for in RCW 35.67.200, and
enforceable in• accordance with RCW 35.67.220 through 35.67.280. As an
additional and concurrent method of enforcing such lien, the water service to
such property may be disconnected in accordance with RCW 35.67.290 and
this Code until such time as all delinquent payments have been paid in full.
Upon full payment of such, installment contract, the Public Works Director, on
behalf of the 'City of Renton, shall execute and deliver unto the-property owner
a release of such lien, which shall be recorded, at the expense of the property
owner, with the King County Auditor's office. All installment payments so made
shall be applied first to interest accrued up to date, and the balance to
principal.
(B) In addition to sewer connection permit fees as required by ordinance and the
rules and regulations promulgated thereunder, there is hereby imposed upon,
and the owners of properties which have not previously been assessed or
. charged or borne an equitable share of the cost of the City's sewer distribution
• system shall pay, prior to any connection to a City sewer main, one or more of
four (4) special ,connection charges, herein defined, in an amount to be
computed under the following paragraphs of this Section.
1. Latecomer Fees. The imposition, collection, payment, and other specifics
concerning this charge are dealt with elsewhere in this Code.
2. Special Assessment Charge. The special assessment charge is a charge for
the historical costs for the sewer collection system, which system shall include
the sewer collection mains that lie adjacent to or near properties that would
benefit directly therefrom, that were not installed by L.I.D.'s or by a private
developer under a latecomer agreement.
589
8-717 8-717
B,2) (a) The number of units of property frontage to be served by the sewer
distribution system, determined in the manner prescribed in RCW 35.44.030.040
and .047 for determining "assessable units of frontage", shall be multiplied by
the actual local improvement assessment per unit of frontage for such facility
for the year in which the sewer main to which the property is to be connected
was constructed and accepted as complete by the City.
(b) In addition to the aforestated cost of "assessment" there shall be a ,
charge of ten percent (10%) per annum added to such cost, but in no case
shall such charge be in excess of one hundred fifty percent (150%) of the
original assessment cost. Interest charges should be simple interest and not
compound interest.
(c) Such special connection charge for property abutting on a street in which
a sewer can be constructed or extended to serve such property but can be
connected without actual construction or extension, shall be computed as if the
sewer was so constructed or extended; and the special connection charge for
property located back from the margin of the street in which the sewer exists
and outside the assessment district created therefor shall be made giving
consideration to the distance of said property from the street margin. In no case
shall credit be allowed for the cost of extra length of side sewer required for
connection to the City's sewerage system; provided, however, that in cases
where application of the foregoing formula to a particular parcel of property
results in a charge, which because of unusual conditions, or conditions peculiar •
to said property only, is in excess of charges to similar properties, the Public I
Works Director is authorized to reduce the special connection charge to such
an amount charged to properties similarly situated.
3. Special Utility Connection Charge. The special utility connection charge which
shall be assessed against any property which has not participated in the
development of the sewer system, which system shall include lift stations, force
mains, interceptors and other collection mains, shall be assessed at the rate of:
(a) Three hundred dollars ($300.00) per single-family residence and mobile
home dwelling;
(b) One hundred seventy five dollars ($175.00) per living unit of an
apartment, condominium, cooperative rental, time-share, motel, hotel, or similar
multi-family occupancy residential structure;
(c) For all other properties except City properties, four cents ($.04) per
square foot of property connected but not less than three hundred dollars
($300.00); J
(d) Fees are incurred upon the granting .by the City of a building permit, but
are payable at the time construction inspection permits are issued for public
sewer extension. All other sanitary sewer service applicants shall pay these
fees at the time of building sewer application;
589
8-717 8-717
B,3) (e) Fees are due immediately, notwithstanding the prior paragraph, if the
party owing the fee sells to a third party, unless the third party agrees to pay
the charge, in writing, with the amount owing to the City set forth in that writing,
and further the City agrees that the third party shall be responsible for that fee
after determination that such an agreement would be in the City's best interest.
The burden of establishing the agreement would be on the party owing the fee
and not on the City, and would be in the City's best interest;
(f) When the phrase "property which has not participated in development of
the system" is used in this Section, it shall mean property which has not paid a
special utility connection charge for the property based upon the square footage
of the property that is to be served by the utility. For example, one single-family
residence on a five (5) acre tract which has paid three hundred dollars
- ($300.00) under this Section to connect to a sewer system will have paid only
for one seven thousand five hundred (7,500) square foot lot at the rate of four
cents ($.04). Additional charges would be applied for any additional
development on the property.
Property that was developed before the effective date of the first connection
charge ordinance in 1965 is exempted from the connection charge. Any
rebuilding or additions to exempted property that does not require additional
water usage such that a larger domestic meter is necessary will not trigger a
new connection charge. However, when property is redeveloped or the use
changed or intensified such that a larger domestic water meter or additional
domestic water meters are necessary or when no domestic water meter was
obtained before, such as property on a well, then any application for the initial
water meter or a larger water meter will trigger a utility connection charge. For
the purposes of this policy, such property when applying for an initial or larger
water meter shall be property that has not been previously assessed.
. When property is redeveloped and the use intensified such that a four inch (4")
(residential) sanitary sewer stub is required to be replaced with a six inch (6")
(commercial) sanitary sewer stub, to the sewer main, then any application for
the sewer construction permit will trigger a utility connection charge.
(g) No special utility connection charge will be collected on City-owned
properties. The benefits to the utility from the use of other City properties such
as utility easements, lift stations, and other benefits offset the amount of the
utility connection charge fee;
(h) When calculating the area to be charged the connection charge,
undeveloped greenbelt and major easements within the property shall not be
included in the square footage for the calculation of the charge. When
determining whether property is undeveloped greenbelts or major easements,
the inquiry should be to recorded easements or dedications or restrictions on
the comprehensive plan or zoning maps or City policies that would prevent
development or significant usages. This exemption is intended not to charge
property that is undevelopable;
- -
589
8-717 8-720
B,3) (i) There shall be no other exemptions from the special utility connection
charge. Any party extending utilities that may serve other than the party's
property may request a latecomer's agreement from the City. Any party required
to oversize utilities may request that the utility participate in the cost of the
project.
4. Inspection and Approval Fees. In addition to other permits and fees, there
will be an inspection/approval fee for on-site and off-site replacement and
improvements which shall be identical to that specified in Chapter 8, Title IX
and any subsequent amendments thereto. .
(C) If any such property for which a special connection charge has been paid later
becomes subsequently included in a local improvement district for the
construction of a sewer of the same or similar nature, then the principal amount
so paid shall be credited to the assessment against such property and such
amount shall be paid from the Waterworks Utilities Fund into such Local
Improvement District Fund. (Ord. 4205, 2-20-89)
• 8-718: FACILITY AND TRUNK CONNECTION CHARGES: (Rep. by Ord.
3547, 5-18-81)
8-719: PUBLIC SEWER EXTENSION: Extensions to the public sewer may be
permitted by developer extension agreements. The Utility Engineer shall
prepare "Conditions and Standards for Construction of Utility Developer Extension". All
developer extensions shall abide by these Standards.
These Standards shall be updated and modified, from time to time, in accordance with
good, effective practices, the "Standard Specifications for Municipal Public Works
Construction of the American Public Works Association" to the "Recommended
Standards for Sewage Work".
8-720: PUBLIC SEWER SPECIFICATIONS:
(A) Public sewers shall conform to the latest standards of "The Standard
Specifications for Municipal Public Works Construction" of the American Public
Works Association and to the "Recommended Standards for Sewage Works" of
the Great Lake-Upper Mississippi River Board of State Sanitary Engineers, and
are subject to review by the Department of Ecology of the State of Washington.
(B) The public sewer shall be ductile iron, AWWA C 151, cast iron, AWWA C 106, J
or C 108, with Type II pushon or Type III mechanical joints, together with
cement mortar lining three thirty-seconds inch (3/32") in accordance with �J
AWWA C 104, or polyvinyl chloride (PVC) plastic pipe ASTM D 3034, or
concrete nonreinforced ASTM C14 Class 2, or concrete reinforced ASTM C76;
rubber gaskets for concrete pipe shall meet ASTM 0443 standards; rubber ry i
gasket for PVC pipe shall meet ASTM 1869 standards. Minimum size shall be
eight inches (8") diameter.
l
.i
•
589 �J
8-720 8-721
•
(C) Manholes shall be installed at the end of each line, at all changes of grade,
size or alignment, at distances no greater than four hundred feet (400') for fifteen
inch (15") diameter sewers or smaller. Greater spacing may be permitted in
larger sewers. Manholes shall be a minimum of forty eight inches (48") diameter,
shall be precast concrete or cast in place concrete, with steel reinforcement;
steps will be placed at one foot (1') spacing, conforming to current safety
regulations.
The manhole covers shall be twenty four inches (24") diameter cast iron or
aluminum frame and covers. No inside drop connections will be allowed. All
connections to the manhole shall match the existing inverts or have an outside
drop connection.
(D) Lift Stations. All lift stations, both public and•for private building sewers shall
have alarm and standby emergency operation systems. All lift stations shall
meet or exceed the specifications of Chapter 30 of "Recommended Standards
for Sewage Works".
(E) Comprehensive Sewerage Plan. All public sewer extensions shall conform to
- the standards and be consistent with the City Comprehensive Sewerage Plan.
(F) Public sewers installed in filled or unstable ground, in areas with high ground
water levels, -or in areas where the potential for infiltration occurs, may be
required to be cast or ductile iron pipe, or PVC plastic D-3034 pipe.
•
8-721: PENALTIES FOR VIOLATIONS OF REGULATIONS: It shall be unlawful
for any person to maliciously, knowingly, wilfully or negligently
break, damage, destroy, uncover, deface or tamper with any structure, appurtenance
or equipment which is part of the City sewage works.
Any person violating any provision of this Ordinance or who shall fail to do any act
he is required to do under the provisions of this Ordinance shall upon conviction be
punished by a fine not exceeding five hundred dollars ($500.00) or imprisonment not
exceeding six (6) months, or by both such fine and imprisonment. Each day any violation
of this Ordinance shall continue shall constitute a separate offense. (Ord. 3055, 8-9-76,
eff. 7-1-76)
•
•
681
. L41(1- s
RP- igIt
9111111,1
Engineers -T .
•
® Planners ‘k .
C. HILL Economists ,...:-.74:t.-
. . ,
Scientists c:��``.- �.::i
November 21, 1989
.11 V6U
SEA20080.B0 'MI .►r-40C�1
-
„,.,j pF c� ! vcP".
City of Renton .
200 Mill Avenue
Renton, Washington 98055 --.---, ,-� 1
Attention: Ron Olsen, Utilities Engineer w ;� `'�
Subject: Pipeline Materials for the Aquifer Protection l"� '
Ordinancet�Tt0N
Rf
C11 r' `'
,�
Ucpt.
�t"Following our meetings of thepast two weeks, we have PIS"
prepared the attached Table 1 which shows Pipeline Material
Alternatives for pipelines crossingCity the of Renton's
Aquifer Protection Area, Zone 1. The accompanying Table 2
contains a list of considerations which should be evaluated
when selecting alternative pipe materials from Table 1.
These materials are intended to be used in pipelines
carrying storm sewage, sanitary sewage, or landfill
• leachate. They are not intended for more specialized
pipeline service such as transmission of petroleum -
products.
All materials listed in Table 1 are generally considered
suitable for the service indicated, based on accepted
practice and their commercial availability. Some materials
are better suited than others; however, there is no
clearcut best choice of pipeline material for a given
service. For brevity, the list of suggested material specs
does not include the many specifications which cover
1 ; details such as gaskets, coatings, etc.
It is our understanding that the City will incorporate this
list by reference into the Aquifer Protection Ordinance to
provide guidance concerning allowable pipeline materials
within Zone 1 of the Aquifer Protection Area, for both new
- construction and rehabilitation or replacement of existing
pipelines.
As we have emphasized in our meetings, this list is likely
not all-inclusive; it is only a guideline. It is .
impossible to condense all pipeline materials selection
information into a short table or text. It is essential
- CH2M HILL Seattle Office 777 108th Avenue,N.E.,Bellevue,Washington 206.453.5000
P.O.Box 91500,Bellevue,Washington 98009-2050
City of Renton
Page 2
November 21, 1989
SEA20080.B0
that each pipeline project be fully evaluated on a case-by-
case basis to arrive at the optimum engineering solution.
Please call us if you have any questions.
Sincerely,
CH2M HILL
Cidri:L-J-4:11"
Arthur L. Storbo, P.E. •
Attachment
1VIIIMEffEngineers •
MEM Planners
Ca'1MHNl Economists
11121111, Scientists
February 9, 1990
rosg2LiVi,..„.„\ A
\\ Lo)
SEA20080.BO FEB 1 2 1990
Mr. Ron Olsen, Utilities Engineer Car( OF RENTON
City of Renton Engineering Dep •
200 Mill Avenue
Renton, Washington 98055
Subject: Pipeline Repair Materials for Aquifer Protection
Dear Ron:
This letter is written as followup to our recent conversations
regarding the use of pressure grouts or gels for repairs to storm
and sanitary sewers within the City's aquifer protection area. Our
letter of November 21, 1989 did not specifically address use of
• these materials.
Based on experience of others within CH2M HILL, we recommend that
pressure grouts and gels not be used for rehabilitation of storm
or sanitary sewers within your aquifer protection area.
In our opinion, all of these product applications have only a
limited life expectancy, on the order of five years, and are not
a long term solution to ensure the tight sewer leakage requirements .
needed in the aquifer area. Further, these product applications,
usually installed from inside the pipeline, are more applicable to
correcting infiltration problems than to correcting exfiltration
problems.
Sincerely,
CH2M HILL ,,
•
Arthur L. Storbo, P.E.
CH2M HILL Seattle Office 777 108th Avenue,N.E.,Bellevue,Washington 206.453.5000
P.O.Box 91500,Bellevue,Washington 98009-2050
CONSTRUCTION STANDARDS FOR ZONE 1 OF AN APA
The following practices will be followed for any construction which shall be undertaken
within Zone 1 of an APA:
1. No temporary storage of hazardous substances on a construction site shall
be permitted unless it can be demonstrated that no other feasible site '
alternative exists. Should hazardous substance storage be permitted, then
such storage shall be limited to a period not to exceed five (5) days.
2. The building permit shall specify those hazardous substances to be used
and/or temporarily stored on the construction site. These substances shall
be limited to the absolute minimum quantity required to accomplish the • •
specific task.
3. All hazardous substances stored temporarily on a construction site shall be
contained within leak-proof membranes surrounded with temporary
retaining curbs. The location of temporary storage must be specified on
the building plans. .
4. The construction staging area shall be located'in Zone 1 only if no
• feasible site exists outside Zone 1. The staging area shall be limited to
the minimum area absolutely required. The staging site must be specified
on the approved building plans.
5. The use of petroleum products on site shall be limited during construction
to that amount which is absolutely required.
•
6. All refueling of construction equipment shall take place outside of Zone 1
if feasible. If such refueling is not feasible then the refueling area must
be covered with a leak-proof membrane surrounded by temporary
retaining walls.
7. All construction equipment shall be "bibbed to catch minor drips of
petroleum products. Bibs shall be drained and cleaned a minimum of
once each day.. Any vehicle which is known to be leaking petroleum 1
products including fuel or hydraulic fluid shall be prohibited on the 1
construction site. .
8. The contractor shall comply with all applicable laws relating to disposal of ,
hazardous substances and shall be contractually responsible for ensuring
that all subcontractors comply as well. . .
1
• •
J
APPENDIX E
SEPA CHECKLIST
APPENDIX F
BIBLIOGRAPHY
CITY OF RENTON
r SEWER COMPREHENSIVE PLAN
BIBLIOGRAPHY
COMPREHENSIVE SEWERAGE PLAN, Soos Creek Water and Sewer District.
Williams,Roth, & Associates, Inc..(1987)
. FINDINGS AND RECOMMENDATIONS ON STRUCTURE OF METRO CHARGES TO COMPONENT
AGENCIES. Rate Structure Advisory Committee (September, 1978).
COMPREHENSIVE WATER PLAN,King County Water District No. 107. Yoshida, Inc. (October, 1986).
HEATHER DOWNS DRAINAGE BASIN FEASIBILITY STUDY FOR INTERCEPTOR SEWERS,City of Renton.
URS Company (1977)..
1983 SEWER SYSTEM COMPREHENSIVE PLAN,King County Water District 108. Richard C.T.Li,Inc. (June,
1983).
KING COUNTY SEWERAGE GENERAL PLAN -FINAL EIS. Virginia Johnson (November, 1978).
ENGINEERING REPORT ON COMPREHENSIVE PLAN AND COST ESTIMATES FOR SEWAGE
COLLECTION SYSTEM, King County Water District No. 90. Hill, Ingman, Chase, & Co. (April, 1970).
WASTEWATER FACILITIES PLAN, City of Kent. URS Company, (March 1977).
! 1 COMPREHENSIVE PLAN FOR SEWER SANITARY SEWER SYSTEM,Bryn Mawr-Lakeridge Sewer District.
Hammond, Collier, & Wade -Livingstone Associates, Inc. (April, 1977).
SEWERAGE GENERAL PLAN FOR SKYWAY, King County Department of Public Works (August,1981).
COMPREHENSIVE SEWER PLAN 1983 SUPPLEMENT, City of Renton. Wilsey & Ham (1983).
COMPREHENSIVE SEWER PLAN, City of Tukwila. Horton Dennis & Associates (April, 1984).
1987 SEWER CLEANING, TV INSPECTION & GROUTING, City of Renton. Public Works Department
(February, 1987).
DEVIL'S ELBOW LIFT STATION DESIGN MEMORANDUM, Hammon, Collier, & Wade- Livingstone
Associates, Inc. (June 5, 1985).
AN ENGINEERING INVESTIGATION OF SANITARY SEWER FACILITY IMPROVEMENTS FOR THE EAST
RENTON, HEATHER DOWNS AND SOUTH HIGHLANDS AREAS, RH2 Engineering, P.S. (July, 1989).
• . AN ENGINEERING INVESTIGATION OF FACILITY IMPROVEMENTS FOR THE SOUTH HIGHLANDS
SANITARY SEWER BASIN,RH2 Engineering,P.S. (April, 1990).
.
j
PRELIMINARY DESIGN REPORT FOR A SANITARY SEWER INTERBASIN TRANSFER FROM THE UPPER
I HEATHER DOWNS BASIN TO THE LOWER MAPLEWOOD BASIN, Dodds Engineers,Inc. (May 23, 1990).
"CRITERIA FOR SEWAGE WORKS DESIGN", State of Washington Department of Ecology (October, 1985).
"SEISMOTECHTOMIC MAP OF THE PUGET SOUND REGION, WASHINGTON, " U.S.G.S. Miscellaneous
• Investigation Series Map 1-1613, Gower, H.D., J.C. Yount and R.S. Crosson (1985).
"PREDICTION OF STRONG GROUND MOTION IN THE PUGET SOUND REGION - THE 1965
- EARTHQUAKE," Bulletin of the Seismological Society of America,Page 905-922,Inhen,S.M. And D.M. Hadley
(1986).
WATER AND WASTEWATER RATES MANAGEMENT ANALYSIS,RH2 Engineering,P.S. (November 1989)
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LEGEND
CITY LIMITS AND
EXISTING SERVICE AREA
T 1:.].! 1 T j: X
BASIN BOUNDARY
X. lxx Tmm v 13 mazZINT, m i:!: SUB —BASIN BOUNDARY
I SANITARY SEWER
— — — — — — — — — SANITARY SEWER
------------------ PRIVATE SEWER
METRO
r SE 100ti� PL
SE 102nd
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FAIRWOOD
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FIGURE I
CITY 0 ON
COMRREHEN WER PLAN
—dddl& I L
EXISTING SEWER SYSTEM &
WASTEWATER COLLECTION BASINS
SCALE JUNE 5, 1991
SCALE: 1 " — 2000'
FILE: SWRCMP3
0 1000 2000 3000 4000 RH2 ENGINEERING, P.S.
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