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Home My WebLink AboutRES 3417 CITY OF RENTON, WASHINGTON RESOLUTION NO. 3 417 A RESOLUTION OF THE CITY OF RENTON, WASHINGTON, ADOPTING THE 1998 LONG-RANGE WASTEWATER MANAGEMENT PLAN (SANITARY SEWER COMPREHENSIVE PLAN). WHEREAS, the City Council was presented the 1998 Long-Range Wastewater Management Plan; and WHEREAS, the plan was discussed at a meeting of the Utilities Committee; and WHEREAS, the plan is compatible with the intent of the City's adopted Comprehensive Plan, 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 1998 Long-Range Wastewater Management Plan is hereby adopted by the City of Renton. PASSED BY THE CITY COUNCIL this 1st day of November , 1999. arilyn J. -to City Clerk APPROVED BY THE MAYOR this 1st day of November , 1999. Jess er, Mayor 1 RESOLUTION NO. 3 417 Appr d as to form: a4&,...,,QAAcf,a'_?/°t)X,,,r.,/..,Q Lawrence J. Warren, City Attorney RES.752:10/256/99. 2 Mop eFS 3(-1I ti( Y g Co NTD Long-Range Wastewaterf Management Plan A Comprehensive Sewer System Plan - 199 :.-- Volumes - 1 and _. October 199 ',` CITY OF RENTON LONG-RANGE WASTEWATER MANAGEMENT PLAN A COMPREHENSIVE SEWER SYSTEM PLAN - 1998 VOLUME - 1 Mayor Jesse Tanner PLANNING/BUILDING/PUBLIC WORKS DEPARTMENT ADMINISTRATOR Gregg Zimmerman UTILITY SYSTEMS DIVISION STAFF Lys Hornsby David Christensen Michael Benoit MAINTENANCE SERVICES DIVISION STAFF Jack Crumley John Thompson tip Ron Shaffer CITY COUNCIL Daniel Clawson Randy Corman .. Bob Edwards CITY OF RENTON Kathy Keolker-Wheeler Toni Nelson APR 2 4 2000 King Parker Timothy J. Schlitzer CITY CLERK'S OFFICE PREPARED BY CITY OF RENTON OCTOBER 1999 CITY OF RENTON IM. LONG-RANGE WASTEWATER MANAGEMENT PLAN A COMPREHENSIVE SEWER SYSTEM PLAN — 1998 VOLUME — 1 This plan was prepared under the direction of the following registered professional engineers. OW 0_� J• JF WASN, 0A VI 4:4 /I7 /y / n Lys Horns Y, UtilitySystemd Director � ;., 2-3169,_Q � , ;��,yam.• ZIM/,MF Q� n of wsytic +rr 'q ., (c� / A," �r 1� ``(JET ,, Gregg Z. :rman '%:/' Administrator IvF 2 876 9Fcjs1- a° sSION AL u a IMO I E'PiRES q/ cd CITY OF RENTON, WASHINGTON RESOLUTION NO. 3417 A RESOLUTION OF THE CITY OF RENTON, WASHINGTON, ADOPTING THE 1998 LONG-RANGE WASTEWATER MANAGEMENT PLAN (SANITARY SEWER COMPREHENSIVE PLAN). WHEREAS, the City Council was presented the 1998 Long-Range Wastewater Management Plan; and WHEREAS, the plan was discussed at a meeting of the Utilities Committee; and WHEREAS, the plan is compatible with the intent of the City's adopted Comprehensive "' Plan, 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 1998 Long-Range Wastewater Management Plan is hereby adopted tairs by the City of Renton. PASSED BY THE CITY COUNCIL this 1st day of November , 1999. arilyn J. '-to City Clerk .00 APPROVED BY THE MAYOR this 1st day of November , 1999. sio Jess er,Mayor 1 KING COUNTY 1200 King County Courthouse 516 Third Avenue Seattle,WA 98104 Signature Report January 19, 2000 010, Ordinance 13708 Proposed No. 1999-0696 Sponsors McKenna lie AN ORDINANCE approving the City of Renton Long- 2 Range Wastewater Management Plan. 3 4 PREAMBLE: 5 K.C.C. chapter 13.24 requires approval of comprehensive plans for sewer 6 utilities as a prerequisite for granting right-of-way franchises and approval 7 of right-of-way construction permits. 8 The City of Renton Long-Range Wastewater Management Plan (plan) 9 discusses public sewer service to existing and future populations in the to Urban Area within and near Renton. The presently unincorporated Urban 11 Area discussed in the plan includes neighborhoods with failing septic 12 systems and three public schools all currently without an opportunity to 1111/ 13 coffinect to public sewers. The plan describes the facilities needed to serve ' ' 14 these areas and the probable costs. 15 The King County utilities technical review committee (UTRC)reviewed 16 and conditionally approved the plan on September 8, 1999. The 17 conditions of UTRC approval, technical changes to the plan, have been 1 Ordinance 13708 18 met and are reflected in the final version attached to this ordinance. 19 Renton prepared a determination of nonsignificance for the amendment on mit 20 February 9, 1999,in accordancc with the state Environmental Policy Act. 21 Renton intends to adopt the plan after final county approval. 22 The UTRC recommends that the council approve the plan. 23 BE IT ORDAINED BY THE COUNCIL OF KING COUNTY: 24 SECTION 1. The City of Renton Long-Range Wastewater Management Plan, 25 Attachment A,is hereby approved without conditions. 26 Ordinance 13708 was introduced on 1/3/00 and passed by the Metropolitan King County Council on 1/18/00,by the following vote: Yes: 12-Ms.Miller,Mr. von Reichbauer,Ms.Fimia,Mr.Phillips,Mr.Pelz,Mr.McKenna, Ms.Sullivan,Mr.Nickels,Mr. Gossett,Ms.Hague,Mr.Vance and Mr.Irons No: 0 Excused: 1 -Mr.Pullen a KING COUNTY COUNCIL KING COUNTY,WASHINGTON Ore / Chair ATTEST: Clerk of the Council APPROVED this day of .2000. �! Vii.. King County Executive Attachments Long-Range Wastewater Management Plan - it I 2 i TABLE OF CONTENTS CHAPTER I ++� SUMMARY AND INTRODUCTION A. PURPOSE OF PLAN 1-1 B. NEED TO UPDATE 1-2 C. SCOPE OF STUDY 1-2 too D. EXISTING SEWER SYSTEM 1-2 E. POLICIES AND DESIGN CRITERIA 1-2 F. LAND USE AND ADJACENT SYSTEMS 1-3 +w G. KEY ISSUES 1-3 H. SYSTEM ANALYSIS 1-3 I. SEPA 1-4 J. CONCLUSIONS AND RECOMMENDATIONS 1-4 .r. K. SYSTEM IMPROVEMENTS 1-5 L. IMPLEMENTATION 1-6 M. HOW TO USE THIS PLAN 1-7 CHAPTER II OVERVIEW OF EXISTING SEWER SYSTEM 'w A. OVERVIEW OF EXISTING SYSTEM 2-I B. SYSTEM HISTORY 2-1 C. SYSTEM COMPONENTS 2-2 D. WASTEWATER COLLECTION BASINS 2-2 um E. INTERCEPTORS AND COLLECTION SYSTEMS 2-2 1. EXISTING SEWERS 2-3 2. INTERCEPTORS 2-3 trip 3. KING COUNTY CONNECTIONS 2-5 F. LIFT STATIONS 2-6 G. TELEMETRY AND CONTROL SYSTEM 2-7 H. OPERATION AND MAINTENANCE 2-7 ir. I. DEFINITION OF TERMS 2-8 TABLE II-I: SUMMARY OF SANITARY SEWER SIZES AND PIPE MATERIAL 2-4 w TABLE 11-2: MAJOR KING COUNTY CONNECTIONS 2-6 FIGURE 1 -EXISTING SEWER SYSTEM&WASTEWATER COLLECTION BASINS 2-10 FIGURE 2—WASTEWATER COLLECTION BASINS&SUBBASINS 2-11 rrr FIGURE 3—TOPOGRAPHY 2-12 FIGURE 4—SANITARY SEWER LIFT STATIONS 2-13 art CHAPTER III OPERATION POLICIES A. INTRODUCTION 3-1 B. GOAL 3-2 C. WASTEWATER UTILITY POLICIES AND REGULATIONS 3-2 �.r Ir NOV Table of Contents Page CHAPTER IV LAND USE POLICIES,ADJACENT SYSTEMS & DESIGN CRITERIA A. INTRODUCTION 4-1 111 B. STUDY AREA 4-1 C. LAND USE 4-2 1. CITY OF RENTON EXISTING LAND USE 4-2 2. CITY OF RENTON FUTURE LAND USE 4-3 S 3. LAND USE DESIGNATIONS 4-4 4. COUNTYWIDE PLANNING POLICIES 4-7 5. UNINCORPORATED KING COUNTY 4-7 6. ANNEXATION 4-8 7. ADJACENT UTILITY SYSTEMS/JOINT USE AND SERVICE AGREEMENTS 4-8 8. AQUIFER PROTECTION ORDINANCE 4-11 D. ANALYSIS AND DESIGN CRITERIA 4-12 I. WASTEWATER FLOW RATES-DEFINITION 4-12 2. WASTEWATER FLOW CRITERIA 4-12 3. SANITARY SEWER DESIGN CRITERIA 4-15 sao 4. LIFT STATION DESIGN CRITERIA 4-17 5. ELIMINATION OF LIFT STATION FACILITIES 4-18 TABLE IV-1: LAND USE OF RENTON'S SEWER SERVICE AREA 4-6 I i TABLE IV-2: LAND USE DESIGNATIONS FOR AREAS OUTSIDE RENTON'S PAA 4-6 TABLE IV-3: WASTEWATER FLOW CRITERIA 4-14 TABLE IV-4: SANITARY SEWER DESIGN CRITERIA 4-16 FIGURE 5-COMPREHENSIVE PLAN LANDUSE 4-17 FIGURE 6-AQUIFER PROTECTION AREAS 4-18 FIGURE 7-ADJACENT UTILITY SYSTEMS 4-19 CHAPTER V SYSTEM ANALYSIS & RESULTS a A. INTRODUCTION 5-1 1. HYDRAULIC ANALYSIS 5-1 2. STRUCTURAL ANALYSIS 5-3 B. SYSTEM-WIDE CONCERNS 5-4 1. KING COUNTY-INTERCEPTOR SURCHARGE 5-4 2. ADJACENT UTILITY SYSTEMS 5-4 3. FRANCHISES 5-5 4. STRUCTURAL PROBLEMS 5-5 5. EARTHQUAKE PREPAREDNESS 5-6 6. SEPTIC SYSTEMS 5-7 C. WASTEWATER COLLECTION BASINS 5-9 1. MAY VALLEY BASIN 5-9 2. WEST CEDAR RIVER BASIN 5-11 3. EAST CEDAR RIVER BASIN . 5-12 III 4. LAKE WASHINGTON EAST BASIN 5-12 5. BLACK RIVER BASIN 5-16 6. LAKE WASHINGTON WEST BASIN 5-18 7. DUWAMISH ESTUARY BASIN 5-19 D. LIFT STATIONS 5-19 1. LIFT STATION NO. 1-AIRPORT 5-20 2. LIFT STATION NO. 2-AZALEA LANE 5-20 3. LIFT STATION NO. 3-BAXTER 5-20 4. LIFT STATION NO. 4-BOEING 5-21 5. LIFT STATION NO. 5- COTTONWOOD 5-21 ii lig "'"' Table of Contents Page 6. LIFT STATION NO. 6-DENNY'S 5-23 7. LIFT STATION NO. 7-DEVIL'S ELBOW 5-23 8. LIFT STATION NO. 8-EARLINGTON SCHOOL 5-23 9. LIFT STATION NO. 9- EAST VALLEY 5-24 r 10. LIFT STATION NO. 10-FALCON RIDGE 5-24 11. LIFT STATION NO. 11 -HIGHGATE 5-24 12. LIFT STATION NO. 12-HONEY CREEK 5-24 13. LIFT STATION NO. 13-LAKE WASHINGTON BEACH 5-24 l"' 14. LIFT STATION NO. 14-LAKE WASHINGTON FLUSH 5-25 15. LIFT STATION NO. 15-LAKE WASHINGTON NO. 2 5-25 16. LIFT STATION NO. 16-LIND AVENUE 5-25 17. LIFT STATION NO. 17-MISTY COVE 5-25 18. LIFT STATION NO. 18-STONEGATE 5-25 19. LIFT STATION NO. 19-SUMMER WIND 5-26 20. LIFT STATION NO. 20- TALBOT CREST 5-26 21. LIFT STATION NO. 21 - WESTVIEW 5-26 22. PRIVATE LIFT STATIONS 5-2" E. TELEMETRY AND CONTROL SYSTEM 5-27 F. WASTEWATER QUALITY 5-28 I. DOMESTIC WASTEWATER 5-28 2. INDUSTRIAL WASTE 5-28 3. WASTEWATER QUALITY PROBLEMS 5-29 iw TABLE V-1: SATURATION PEAK WET WEATHER FLOWS AT MAJOR KING CO CONNECTIONS 5-3 TABLE V-2: LIFT STATION INVENTORY SUMMARY 5-22 or TABLE V-3: DISCHARGE PERMITS& DISCHARGE AUTHORIZATIONS IN THE CITY OF RENTON 5-30 "" CHAPTER VI RECOMMENDED IMPROVEMENTS A. INTRODUCTION 6- B. CIP RANKINGS 6-1 1. SUBSTANDARD FACILITY 6-4 2. SYSTEM EFFICIENCY 6-4 so 3. ENVIRONMENTAL PROTECTION 6-5 C. CAPITAL IMPROVEMENT DESCRIPTIONS 6-8 1. SYSTEM WIDE IMPROVEMENTS 6-9 2. WEST CEDAR RIVER BASIN 6-11 'r"' 3. EAST CEDAR RIVER BASIN 6-15 4. LAKE WASHINGTON EAST BASIN 6-IN 5. BLACK RIVER BASIN 6-40 6. LAKE WASHINGTON WEST BASIN 6-51 7. DUWAMISH ESTUARY BASIN DUWAMISH ESTUARY BASIN 6-59 8. MAY VALLEY BASIN 6-60 D. PROPOSED IMPROVEMENTS BY PRIORITY 6-63 to E. PROPOSED IMPROVEMENT BY PROJECT TYPE 6-63 F. PROPOSED CAPITAL IMPROVEMENT PLAN SCHEDULE AND CASH FLOW 6-63 TABLE VI-1: RANKING SUMMARY OF PROPOSED IMPROVEMENTS 6-2 TABLE VI-2: PROPOSED IMPROVEMENTS PRIORITY SUMMARY 6-6 TABLE VI-3: SUMMARY OF PROPOSED IMPROVEMENTS BY PROJECT TYPE 6-64 TABLE VI-4: COST BREAKDOWN FOR PROPOSED IMPROVEMENTS 6-66 TABLE VI-5: FUNDING SOURCES FOR PROPOSED IMPROVEMENTS 6-68 FIGURE 8-PROPOSED IMPROVEMENTS 6-70 +r arr r ili Table of Contents Page CHAPTER VII OPERATIONS AND MAINTENANCE A. SANITARY SEWER SYSTEM OPERATION 7-1 B. CURRENT OPERATION AND MAINTENANCE PROGRAM 7-1 I. OPERATIONS 7-1 2. MAINTENANCE 7-6 C. STAFFING 7-7 1. MAINTENANCE AND OPERATIONS STAFF 7-7 ima aim:, 2. WASTEWATER UTILITY ENGINEERING STAFF 7-9 3. DEPARTMENTAL COORDINATION 7-10 iiii TABLE VII-l: WASTEWATER UTILITY DEPARTMENT EQUIPMENT(1998) 7-4 TABLE VII-2: STAFFING TIME FOR PREVENTIVE MAINTENANCE 7-8 TABLE VII-3: STAFFING TIME FOR OPERATION TASKS 7-8 TABLE VII-4: WASTEWATER UTILITY ENGINEERING STAFF TIME 7-11 iiii CHAPTER VIII FINANCIAL ANALYSIS ow A. INTRODUCTION 8-I B. WASTEWATER UTILITY EXPENSES AND REVENUE REQUIREMENTS 8-I C. OPERATING COSTS AND REVENUES 8-I I. KING COUNTY CHARGES 8-2 2. CITY OF RENTON OPERATIONS AND MAINTENANCE 8-2 D. CIP COSTS AND REVENUES 8-6 1. CAPITAL IMPROVEMENT PLAN COSTS 8-6 2. REVENUE SOURCES FOR CIP 8-7 E. FINANCIAL ANALYSIS 8-12 iiii TABLE VIII-1: PROJECTED SANITARY SEWER RATE INCREASES FOR A SINGLE FAMILY RESIDENCE BASED UPON PROPOSED RECOMMENDATIONS IN THIS PLAN 8-4 TABLE VIII-2: COMPREHENSIVE PLAN CIP COST COMPARISON 8-5 a TABLE VIII-3: COST BREAKDOWN FOR PROPOSED IMPROVEMENTS 8-8 FIGURE 9- CITY'S REVENUE BREAKDOWN SUMMARY 8-3 1, FIGURE 10-REVENUE REQUIREMENT SUMMARY 8-4 FIGURE 11-CIP FINANCIAL ANALYSIS SUMMARY iiiii iii iiii a a iv a ail WO MOO . ,,,,,,,,,„,...,,,,„,,,,,,,„,„„:„., CHAPTER I u ,,..:,,,,,,,i1:- ..F.ci..%t-,,,,„,r,,,,,,,;,,,. .ilif 7,,-,,--,,,,,:.!„1,44,-,..,,,,,,,,,,„...,...„ . „.. S SuMMARY AND INTRODUCTION ,.. lig 4 * 34.,,,,i,,,,i, , , ,, , max:;::;";!'' ;tn- st's'''''tt'4.-"'"::''''lk.“'-‘ 1:” ''''"' ‘' '''t,' ' '' '... IIIP �, lb Ty � 'N o illg kill tit ' P '''::: ;14:4:'''':: ''''' ' "We Are All In This Boat Togelher,'sculptitre hp Harold Balctxs sited along the Cedar River Trail, adjacent to the Renton.Senior Center. T be srttlpitue u�as dedicated iii 1)91. kill b III 6 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 six years in order to provide the Renton Sewer Service Area with an effective, safe and reliable sewer system. While this plan is an update to the Long-Range Wastewater Management Plan adopted in 1992; it is a complete re-evaluation of the entire sanitary sewer system and a stand-alone document, not a supplement. A summary of this plan's findings and recommendations are presented in this chapter. The plan results from an evaluation of the existing sanitary sewer system and 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, King County Comprehensive Plan, and City Comprehensive Plan. The City of Renton adopted its last Long Range Wastewater Management plan in 1992. That plan di"' anticipated growth in the system and proposed improvements. The plan also attempted to address concerns for groundwater protection, significant increases in construction cost, and increases in land use densities. These issues, again, as well as others are examined in detail in this plan. The Renton sanitary sewer system is large, and because of the topography, complex in its operation. 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 and within Renton's Potential Annexation Area. 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 Renton wastewater utility 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 officials with partial direction for approving building permits and upgrading the system. • 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. 05/17/99 1-1 a CHAPTER ONE B. NEED TO UPDATE a This update to Renton's Long-Range Wastewater Management Plan is inspired by the need to provide constant evaluation of our sewer system and operating policies in order to meet the needs of the customers and to ensure compatibility with the City and County's Comprehensive plans. This updated plan is prepared in conformance with Chapter 173-240 WAC. C. SCOPE OF STUDY The scope of study includes the following: mar • Analyze the existing system to determine its deficiencies and needed improvements. • Document City Council policies regarding growth and service areas. a • 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. it • Document, in summary form, the existing operations and maintenance program and recommend improvements and staff additions. y • Analyze the recent financial performance of the sewer utility and develop a financial operating projection statement. D. EXISTING SEWER SYSTEM The City of Renton owns, operates, and maintains its sanitary sewer system. This system consists of approximately 158 miles of gravity sewer, 21 sewage lift stations and force mains, and approximately 3,800 manholes. Wastewater is discharged to King County facilities at 67 locations within the City Service Area from which it is conveyed to and treated by King County's Renton Treatment Plant. The existing sanitary sewer system is shown on FIGURE 1. The City of Renton Service Area is divided into seven major wastewater collection basins, each of which consists of one or more subbasins. These wastewater collection basins are shown on FIGURES 1 and 2. For the most part, these collection basins and subbasins follow the natural drainage patterns of the Renton service area. For the purposes of this plan, areas that are pumped are included within the basin they are pumped to. This is a modification from the last plan, where basins were drawn related to topography. r E. POLICIES AND DESIGN CRITERIA a Policies, design criteria, and standards used for planning and operating the sanitary sewer system are based on laws and policies that originate from several sources. All these policies and standards have the a 1-2 05/17/99 Oil .r - SUMMARY AND INTRODUCTION 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 King County Department of Natural Resources - Wastewater Treatment Division and the City of Renton. F. LAND USE AND ADJACENT SYSTEMS NO The land use proposed in the City's 1995 Comprehensive Land Use Plan was used to estimate wastewater flow rates at saturation conditions within the City. For portions of the service area outside the current City Limits, both the County's existing land use and the City's proposed land use were used for evaluation. 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 5. 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 Valley, Skyway and East Renton areas that currently either do not have existing or adequate sanitary sewer facilities. The adjacent utility entities are shown on FIGURE 7. rrr G. KEY ISSUES ;rr 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. r Several of these issues were also addressed during preparations of the 1983 Comprehensive Sewer Plan and again in the 1992 Long-Range Wastewater Management 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 at saturation flow rates. The Wastewater Utility's computer model was used to analyze the system and to size future facilities. This model was developed for the 1992 Long-Range Wastewater Management Plan and updated with the 1995 Inflow and Infiltration Study flow monitoring data. This r 05/17/99 1-3 CHAPTER ONE '" 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 it 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 C. 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, many of the projects proposed herein will require SEPA checklists and some may require an environmental impact statement J. CONCLUSIONS AND RECOMMENDATIONS ` In the development of this plan,the following conclusions were reached: 1. A substantial percentage of the system has reached the end of its useful life and needs to be replaced. The areas of highest concern that should be given highest priority for evaluation for replacement are: Windsor Hills, North Highlands, South Highlands, Earlington,Renton Hill,Downtown,Talbot Hill, West Hill, and Sunset(Honeydew). 2 The City needs to continue to perform detailed testing to obtain better engineering information regarding the operation and hydraulic behavior of the system. Specifically, this should include a continued investigation for Inflow and Infiltration through flow monitoring and video inspection. 3. 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 determine whether to purchase the facilities from the adjacent municipality, or to continue to allow the existing agency to provide service. Purchase of facilities should be based on the actual depreciated cost the municipality incurred from providing the facilities to obtain service. 4. The rate increases recommended in this plan should be considered an estimate to implement the City-funded portion of all the recommended improvements. Currently, new development pays a major portion of the remaining cost of recommended improvements. If funding from this source, such as the System Development Charge, is not available, the City's share of these construction costs will most likely increase. It should also be recognized that this plan does not establish annual CIP programs or sewer rates, but rather provides a roadmap and guideline for the operation of the system. ai Yearly CIP programs and sewer rates are established as part of the budget process. 1-4 05/17/99 a SUMMARY AND INTRODUCTION 5. The City's sewer system is complicated; the preceding conclusions and recommendations +rr are based on the highest priority issues. We propose a substantial number of additional recommended facility improvements and modifications that are further described in Chapter VI. When we assigned them priorities, we took into consideration the following v.r characteristics: a. Whether a facility is structurally deteriorating or has hydraulic capacity as problems. b. Whether an improvement increases overall efficiency by reducing operation and +rr 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 r improvements. This plan should be updated at intervals of no greater than six 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 operations 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. 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 that will adequately finance capital improvement costs as SO well as operation and maintenance costs in accordance with the utility rate study. aup 05/17/99 1-5 S CHAPTER ONE 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 on-going fulfillment of 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 1995, 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 is 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 financial models in a manner consistent with the City's budget schedule, so tit that rates can be adopted to accurately reflect the current financial situation within the utility. These models were developed during the development of the 1992 Long-Range Wastewater Management Plan based upon data provided in the 1989 rate management to analysis (Water and Wastewater Rates Management Analysis, RH2 Engineering P.S., November 1989). The model was updated as part of the rate study adopted in 1994 (Comprehensive Rate Study, Water Wastewater, and Surface Water Utilities, Economic +ri< and Engineering Services, Inc.,January 1994). B. Complete the inventory of the sewer system, verifying the as-built records and gathering a data on those parts of the system that are not recorded. C. Continue to 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 Potential Annexation Areas adopted by the City. E. Prepare an update to the 1998 Long-Range Wastewater Management Plan as necessary, to incorporate the new adopted land use designations a 1-6 05/17/99 a wr VW SUMMARY AND INTRODUCTION 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. as 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 au 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. lag 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 W` which will be necessary to support them. WS VW VW r 05/17/99 1-7 er. wis .,; 04 1 ,., 7r-----7 .---tH,, 7 ----------T-77t — :- ----...----_--- - , i•-• u - --:t,',.1... i -16, - 0 t.,.., _ — ,,„ A:A IMO k‘ .,' - ,\ . .,_ ,..,.. ;,....,..i.,/./1 ‘\A "4 .77 ._____.---,..—_________,_,,,, _ L ____-0.5;-..1-awf:- •:_illb,..... •,, i itiu _, ..t It_ ...-- „.,--L...,., ,„,;.. ._-* ..---,•,.. _ '— N,,,,,,,,— ••1* --, L___-----7. -- --- 'P i----- '''''.z. ''1: 1 , '14;4!(.:---- ----- --- -,...- , 1/ 41 I . ,,,,...;141 all - ---/ " • tim ' ', , Ma , .,,..,,••-,.f.L B:_2 j 0 ,t1 t-- -=:-.:--.--_,---_-. . ...--- i" %4., i --— -• ., 1, _ sit' . _„..:-"."-f...-0.--71/./e0• alli fil - a". wilsAs ,misna Pe Jo 1181/113A0 11, ... ......., --.. ,,., . . .,,. ' eel al ell 'Pe .rr 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 16.5 square miles with a population of over 45,000. Approximately 80 percent of the land area and 94 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 �r. City of Renton's Planning/Building/Public Works Department(Public Works). The City maintains 21 sewage lift stations. In addition, there are approximately 15 privately owned and maintained sewage lift stations serving apartment complexes, commercial industrial properties or schools ame in the City's service area. Wastewater is discharged to King County facilities at 67 locations within the City, from which it is conveyed to and treated by King County's East Section Reclamation Plant. The City of Renton system contains approximately 3,800 manholes and 11,129 customer connections. FIGURE 1 illustrates the existing sewer system in plan. B. SYSTEM HISTORY err 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 sip current site of King County's Renton Treatment Plant, which serves as one of the regional treatment facilities. The City of Renton sanitary sewers now discharge to these facilities. In 1993, the citizens of King County voted to combine the Metro and King County governments into a new regional government, Metropolitan King County. Metro's wastewater treatment, water quality and transit responsibilities became part of an interim Department of Metropolitan Services for 2 years while the new government created its new structure. In 1996, the wastewater treatment and water quality functions of the Department of Metropolitan Services were transferred to the new King County Department of Natural Resources. The responsibilities of the former Metro Council, which provided oversight of wastewater treatment service for the first 35 years, now lie with the new Metropolitan King County Council. 05/17/99 2-1 OW 1 f CHAPTER TWOoil 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. 11 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 that 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 ?he City of Renton is divided into seven major wastewater collection basins that consist of one or more .ubbasins, as shown in FIGURES 1 & 2. These collection basins and subbasins would ideally follow the natural drainage patterns of the Renton service area. However, because of natural and service area boundaries, the wastewater collection basins do not always follow drainage basins. The City has lift stations and deep interceptors that transfer flows from one drainage basin to another. FIGURE 3 shows the topography of the City overlaid by the existing sewer system. The wastewater collection basins are based upon the sewer system design and usage. The seven major basins are 1)May Valley, 2) West Cedar River, 3) East Cedar River, 4) Lake Washington East, 5)Black River, 6) Lake Washington West, and 7)Duwamish Estuary. i INTERCEPTORS AND COLLECTION SYSTEMS a 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. The City of Renton has approximately 158 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 but includes pipes sized from 6 inches to 30 inches. 2-2 05/17/99 OVERVIEW OF EXISTING SEWER 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. W These totals include both gravity and force main pipe. 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 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,while the PVC pipe has been typically used for newer sewer system installations. The City sanitary sewer system also contains approximately 3,800 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 that are less than 24-inches in diameter. 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 VALLEY BASIN • Renton-Coal Creek Joint Use Interceptor dire LOWER CEDAR RIVER BASIN • Cascade(Tiffany Park)Interceptor • Central Renton Interceptor • Maplewood Interceptor • Heather Downs Interceptor rw • East Renton Interceptor err 05/17/99 2-3 di CHAPTER TWO TABLE II-1: SUMMARY OF SANITARY SEWER SIZES AND PIPE MATERIAL iii PIPE SIZE SUMMARY we PIPE DIAMETER LENGTH PERCENTAGE iiii 3-inch 0.26 miles 0.17% 4-inch 1.24 miles 0.78% 6-inch 4.72 miles 2.99% • 8-inch 122.96 miles 77.82% 10-inch 5.62 miles 3.55% Ili 12-inch 11.72 miles 7.41% 14-inch 0.09 miles 0.06% • 15-inch 2.93 miles 1.85% 16-inch 0.47 miles 0.30% viiii 18-inch 3.04 miles 1.93% 20-inch 0.38 miles 0.24% iti 21-inch 1.46 miles 0.92% 22-inch 0.27 miles 0.17% to 24-inch 2.85 miles 1.80% TOTALS 158 miles 100% �1 PIPE MATERIAL SUMMARY PIPE MATERIAL LENGTH PERCENTAGE Concrete Pipe 66.21 miles 41.90% Vitrified Clay Pipe 6.37 miles 4.03% HDPE 0.04 miles 0.03% Cured In Place 0.12 miles 0.08% iii PVC Pipe 54.12 miles 34.25% Lined ductile iron pipe 8.34 miles 5.28% Unknown pipe type 22.80 miles 14.43% TOTALS 158 miles 100% Note: Pipes that are of an unknown material are typically the older lines that do not have good records of installation. These lines would probably be either clay or concrete. oil 2-4 05/17/99 i11 IMO O OVERVIEW OF EXISTING SEWER SYSTEM LAKE WASHINGTON EAST BASIN • Lakefront Force Main • West Kennydale Interceptor • South Highlands Interceptor • North Highlands Interceptor • Proposed East Kennydale Interceptor • Honey Creek Interceptor • Sunset Interceptor BLACK RIVER BASIN • SW 16th Street Interceptor • Talbot Hill Interceptor • Springbrook Interceptor ficw • SW 34th Street Interceptor • East Valley Interceptor • South Renton Interceptor • Thunder Hill Interceptor • Black River Interceptor LAKE WASHINGTON WEST BASIN • West Renton Interceptor • Proposed Renton Avenue Interceptor 3. KING COUNTY CONNECTIONS The Renton sanitary sewer system discharges wastewater to KING COUNTY sewer interceptors at 67 locations. The wastewater flow rates into each of these connections varies considerably, depending on the area served by the collection system. The major King County connections for each subbasin are listed in TABLE II-2. 411111 411110 05/17/99 2-5 U, CHAPTER TWO sii TABLE H-2: MAJOR KING COUNTY CONNECTIONS SUBBASIN KING CO.MANHOLE NO. Renton- Coal Creek Joint Use Interceptor M-6 Kennydale Lakefront R02-18 tie Kennydale Interceptor R02-17 North Renton Interceptor RO1-32 West Renton Interceptor RO1-20 emi SW 16th Street Interceptor R18-1 Renton Industrial(South) R18-11 lit Talbot Hill Interceptor R18-19 to Thunder Hill Interceptor R01-8 South Renton R01-14 • Cascade(Tiffany Park)Interceptor R10-32 Central Renton Interceptor RO 1-26 Heather Downs Interceptor R10-26A AO East Renton Interceptor R10-24 F. LIFT STATIONS orai 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 21 sewage lift stations within its sanitary sewer system. The location of these lift stations is shown in FIGURE 4. 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 submersible pump installation in which the sewage pumps are placed directly in the wet well. A wet well/dry well configuration is the third most common type of station. This type has mechanical and electrical equipment located underground in a sealed enclosure adjacent to a large dig manhole from which the wastewater is pumped. The City also has one pneumatic injector station, in which wastewater is conveyed through a force main using pressurized air. do 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; err 2-6 05/17/99 S W. OVERVIEW OF EXISTING 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 wan Successful operation of any municipal sewer system requires that the municipality maintains 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. A radio-based telemetry system was completed in 1996 to replace the City's existing tone telemetry system. Each lift station is controlled by a digital based Remote Telemetry Units (RTU) to allow custom control to match the characteristics of each individual lift station. The RTU's are programmable controllers programmed in basic programming language. The RTU monitors the control at the lift station and provides secure and accurate information about the operating conditions. A Master Telemetry Unit (MTU) polls each lift station RTU and feeds the data to the Master Computer via Modbus communication link. The telemetry system provides a method for logging and controlling all the City's lift stations from a central location at the City's Maintenance shops. Operating data from each lift station is stored on a Master (data-logging) Computer for record and later use. This information is used in a comprehensive maintenance program to help eliminate costly station down time that can often cause damage to adjacent property owners and the environment. The control algorithms located on the Master Computer and the RTU's can be used as trend analysis to detect possible problems earlier. The telemetry system information is managed from a Master computer. Wonderware Intouch Person- Machine Interface software is used at the Master Computer for displaying the data graphically on screen. The Master computer displays wet well sewage levels and time to overflow data for most of the City's 23 IMO lift stations (two of the 23 stations are storm water stations). This information can be used to help manage the lift stations in a citywide power interruption that could occur after a natural catastrophe. The telemetry system can be monitored and controlled by a remote computer link using specialized software. r The pumps main control system is controlled from a level sensor in the wet well. A back-up float switch system has been installed at most of the lift stations to provide redundant protection from costly overflows in the event of pump failure. Smaller stations, serving twelve or fewer single-family homes, egi may utilize floats as the main control system. 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. ea 05/17/99 2-7 1111 CHAPTER TWO 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. tio 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. Combined Sewer- A sewer intended to receive both wastewater and storm or surface tii 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 0.80 that 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 flows 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 that 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 King County. a 2-8 09/21/99 VW +r OVERVIEW OF EXISTING SEWER SYSTEM 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 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. low 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, as required. 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 "W 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. 05/17/99 2-9 +r l W�4:4 �flllr_Mgaml O 20100 40100 6mwmd - L— __ I CITY LIMITS M AY VALLEY BASIN EAST CEDAR RIVER BASIN LAKE WASHINGTON EAST BASIN 1:24,000 SUB -BASIN BOUNDARIES DIUWASMISH BASIN ,WEST CEDAR RIVER BASIN j LAKE WASHINGTON WEST BASIN URBAN GROWTH BOUNDARY BLACK RIVER BASIN LOWER CEDAR RIVER BASIN SODS CREEK BASIN + NOTE: FOR PROPOSED SERVICE AREA BOUNDARY SEE FIGURE 7. FIGURE I CITY OF RENTON LONG—RANGE WASTEWATER MANAGEMENT PLAN EXISTING SEWER SYSTEM & WASTEWATER COLLECTION BASINS MAY 49 1999 Vd . 0 2000 4000 1:24,000 ------------- CITY LIMITS SUB -BASIN BOUNDARIES -•-•-•-•-•-•-•-•-•- URBAN GROWTH BOUNDARY MAY VALLEY BASIN DUWASMISH BASIN BLACK RIVER BASIN NOTE: FOR PROPOSED SERVICE AREA BOUNDARY SEE FIGURE 7. 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S 19001 SI $ I I • G O a tlus 911W R I g g y0 StW1,R AA a 4`pP s ti 1 C7IN 5 10101 s I 1 s Ya N a ing 9 sg SE OM R0 x 98.15t I( (-��\ 4 192v 51 ( ('WM Ss 6 Sr 1916 M a 5198651 Z I f IBIX g at ? iI__ Y IYfn x a a # 016 R 5i5 §e PANTHER T 1 . ...„ � R 111 1 s� ..� X V�" 9 ! \ LI_ F Iwobi Y g 4.`sA Y2m1YR ___ YAM?1_ S 1006 N YAWR STATION IS SATISFACTORY FIGURE 4 0 3000 6000CITY OF RENTON ra.......1 STATION TO BE ELIMINATED LONG—RANGE WASTEWATER _ STATION TO BE REPLACED MANAGEMENT PLAN (ti o,- SANITARY SEWER . ! . STATION TO BE REHABILITATED LIFT STATIONS Y'P,NT; CITY LIMITS MAY 4, 1999 N. .., al. ire lire i 1. : '''-•-40r•fitek,F7.:'•••:••:',-' - ' - ,--,--,,:te,',-1,4,4,:[.Qil.,•:,.'.'...•.•••, 't. CHAPTER III OPERATIONAL POLICES r be , -N-. • iii !,::-=..73_ • . . , jo Iliii....11glirciAlk IIIIIEZIIPII III. 41.,....-ii • . pil , , : :4P71.41111 W MI ail ' • .., . WI , 4„ ..• i ._*1 ." n n 1 ' . . \*. - 1 'e.:•••••• 1r , ,...• .:. ,.....)1E '•1101p i • i . I ' - _____ _fit•. i' . / z.---_,-- liarti..'!.'1!!•:' . • F_•- / ---, • i I / L...' ____ - -- _- i ------- ... -- .\ --- , / _ Iwo ,z---------- ,-- -------- „ ,- -_-a-,,__ ,..„-- • --- . ---------- ------:--- ----------_„-:--'"----_. =—_ _ , .._____. -----• . . ill§ , rim ill r.n wie CHAPTER III OPERATIONAL POLICIES +r• A. INTRODUCTION +rr 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 eight sources, listed in descending order, from those with the broadest authority to those with the most s• narrow: • Federal Regulations-Environmental Protection Agency • State Regulations-Department of Ecology • King County Policies-Department of Natural Resources— V"' Wastewater Treatment Division • City of Renton Comprehensive Plan ..r • 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, county policies, and city 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. VW rrr VW 05/17/99 3-1 CHAPTER THREE iiii B. GOAL err The goal of the City of Renton Wastewater Utility is to provide adequate, reliable sanitary sewer service at a minimum cost to the customer. 11111 Guiding the Wastewater Utility's daily operations as well as its planning activities, the policies in this Plan stem from this goal. Objectives and policies that fall into four areas of emphasis support this broad service goal: vs 1. Customer Service eii 2. Financial 3. Facilities r 4. Organization The long-range wastewater policies are compiled below; the chapters in which they are further developed ori are also indicated. City and state ordinances and laws are summarized below, for their actual wording. Please refer to the indicated sources for the complete text. The policies presented here will become the official policies of the Wastewater Utility when the City Council adopts this plan. Consequently, they is are presented in the traditional policy format rather than the outline format that the other chapters follow. C. WASTEWATER UTILITY POLICIES AND REGULATIONS 1.1.0 CUSTOMER SERVICE OBJECTIVE: Ensure the availability of an adequate level of sanitary sewer service which is consistent with land use, environmental protection, and • annexation goals and policies. POLICIES: ye 1.1.1 (1995 City of Renton Comprehensive Plan, Policy U-1) Sewer facilities and services should be consistent with the growth and development concepts directed by "' the Comprehensive Plan. 1.1.2 (1995 City of Renton Comprehensive Plan, Policy U-55) is Ensure and encourage the use of the sanitary sewer system within the urban areas in a manner consistent with land use and environmental protection goals and policies. +ti 1.1.3 (1995 City of Renton Comprehensive Plan, Policy U-56) we All new developments should be required to connect to the sanitary sewer system, except properties zoned for low density single family residential development that are located away from environmentally sensitive areas, outside of Aquifer Protection Areas, and having adequate soils to support on-site septic sit systems. ts 3-2 05/17/99 .r. OPERATIONAL POLICIES 1.1.4 (1995 City of Renton Comprehensive Plan,Policy U-72) Actively promote connection to the public sewers by all residents within the City's service area. EXISTING REGULATIONS: 1.1.5 (City Code sections 4-6-040.A.1) Private sewage disposal systems will be allowed within the urban areas, subject to city, county, and state regulations and when public sewers are not available. 1101 1.1.6 (City Code section 4-6-040.I.4) 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. 1.1.7 (King County Board of Health Rules and Regulations No. 3, Part XIII) New construction on properties that are within 330 feet of an existing gravity sewer line shall be connected to the public sewer system if it is determined by the Wastewater Utility that the sewer is available. 1.1.8 (City Code section 4-6-040.A) wr Properties that are within 330 feet of an existing gravity sewer line are required to connect if: to a) They have a failing septic system. b) They are part of a sewer LID. "" 1.1.9 (City Code Section 8-8-6C) 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. 1.1.10 (City Code Section 8-8-6C) rr Existing development (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 two (2)years of the availability of the new sewer line. 1.1.11 (City Code Section 8-8-7C) Any new development(residential and non-residential) in Zone 2 of the Aquifer Protection Area shall be required to connect to the City sewer system. (New single-family residential development on existing lots may be allowed to use on-site disposal systems until public sewer service becomes available.) 1011 05/17/99 3-3 eir lig CHAPTER THREE ed 1.1.12 (City Code section 8-5-3) Properties that are within 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. 1.1.13 (City Code section 4-9-250) 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 usage. 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. 1.1.14 (City Code section 4-6-040.I.6) 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 storm waters. 1.2.0 PLANNING OBJECTIVE: Ensure that Renton's sewage collection system is consistent with the City's land use plans and the public health and water quality goals of Washington State. POLICIES: 1.2.1 (1995 City of Renton Comprehensive Plan,Policy U-13) o Coordinate the extension of sewer service with expected growth and development. 1.2.2 (1995 City of Renton Comprehensive Plan, Policy U-19) tri Implementation and coordination of programs for the improvement, phasing and financing of sewer infrastructure should be developed consistent with the Land Use Element of the Comprehensive Plan. 1.2.3 (1995 City of Renton Comprehensive Plan,Policy U-58) Adequate sewer service capacity should be assured prior to the approval of any new development application. 1.2.4(1995 City of Renton Comprehensive Plan,Policy U-18) Sewer facilities and services should be in place prior to occupancy of development projects. wry • a 3-4 05/17/99 a .r► +■ OPERATIONAL POLICIES 1.2.5 (1995 City of Renton Comprehensive Plan,Policy U-59) Sewer service should be expanded so that the current levels of service are maintained through build-out of the adopted land use. Note: While land use plans typically deal with twenty year projections, the sewer facilities installed today have a life expectancy of 75 to 100 years. A Sanitary Sewer Utility has to consider the current Land Use Plan, historical trends, and predictions for further growth when designing sewers. The Utility may install a facility larger than needed for the land use projected in the twenty-year plan if additional capacity needs are projected for the long-term future. It is in the WIMPbest interests of the ratepayers to obtain the longest use possible from a facility and not have to replace newer facilities. +r. 1.2.6(1995 City of Renton Comprehensive Plan, Policy U-61) Renton should coordinate with the regional wastewater agency and adjacent jurisdictions in the planning and maintenance of regional wastewater systems in and near the City. er 1.2.7 (1998 Long-Range Wastewater Management Plan,Chapter 4) - For planning purposes, the Wastewater Utility should use sanitary sewer service boundaries established by agreement with adjacent municipalities. Where boundaries do not exist, the Wastewater Utility shall use natural basins, the County's Urban Growth Boundary, and negotiations with adjacent sewer service .r providers to determine the ultimate service area. 1.2.8 (1998 Long-Range Wastewater Management Plan,Chapters 2, 5, and 6) err Facilities should be planned and sized to serve natural basins to minimize the need for pumping and inter-basin transfers. 1.2.9 (1998 Long-Range Wastewater Management Plan, Chapters 4, 5, and 6) Projected sewage flows from development should be calculated based on adopted land use plans and policies. These projections should 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 should be adjusted accordingly. �.r 1.3.0 SERVICE AVAILABILITY OBJECTIVES: Ensure the availability of an adequate level of sanitary sewer service to areas annexing to the City or areas within the City's Potential Annexation area. POLICIES: 1.3.1 (RCW 35A.14,RCW 35.13A, and 1995 Renton Comprehensive Plan, Policy U-64) 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. 05/17/99 3-5 a CHAPTER THREE 'a 1.3.2 (1995 Renton Comprehensive Plan, Policy U-70) a The City may assume existing portions of adjacent sanitary sewer systems, at the discretion of the City Council, when such assumptions promote the logical and efficient development of the City's sanitary sewer system. 1.3.3 (1995 Renton Comprehensive Plan, Policy U-69) Allow the extension of sanitary sewer services within the City's Potential Annexation Area according to such criteria as the City may require. Sanitary sewer service shall not be established within the boundaries of another sewer service provider's district, except by agreement with that provider. Comment: As the service provider, Renton is the point of contact or focal point. Not all regulations or criteria originate with Renton. Some regulations or criteria originate at the federal, state, or county level. All applicable regulations will be followed in the provision of service in unincorporated areas. 1.3.4 (RCW 35.13A.050 and 1995 Renton Comprehensive Plan, Policy U-65) 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. a' 1.3.5 (RCW 35.13A and 1995 Renton Comprehensive Plan,Policy U-66) • Areas annexed with existing sanitary sewer service must meet the City's sanitary sewer service objectives. Upgrading of sanitary sewer facilities to City standards, 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. 1.3.6 (1998 Long-Range Wastewater Management Plan, Chapter 4) r io 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 a 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 either because of location + within a drainage basin or because it is the most logical extension of facilities. 1.3.7. (1998 Long-Range Wastewater Management Plan,Chapter 4) sib Service to new development outside the City Limits requires consistency with the designated land use of Renton's Comprehensive Plan in terms of density, use, and residential unit type. 3-6 05/17/99 + rr OPERATIONAL POLICIES EXISTING REGULATIONS: err 1.3.8 (City Code section 4-6-040.C) Service outside the City Limits will be permitted under the following conditions: a) The property shall be within the City's adopted Potential Annexation Area (PAA) or ®r approved Sanitary Sewer Service Boundary; and b) Extension of sewers and service shall be per City of Renton design standards and service criteria; and +rr c) King County Boundary Review Board approval of service and service agreements with adjacent districts will be obtained, when necessary; prior to issuance of the public works permit. 2.0.0 FINANCIAL OBJECTIVE: Provide sound financial policies on which to base operations of the Wastewater Utility that will allow the utility to meet its overall goal. POLICIES: 2.1.1 (1998 Long-Range Wastewater Management Plan Policy) Criteria should be established for developing the fees and rates necessary to maintain the Wastewater ow Utility's established level of service. rr. 2.1.2 (199S Long-Range Wastewater Management Plan Policy) The Wastewater Utility shall be operated as an enterprise utility(financially self-supporting). 2.1.3 (1998 Long-Range Wastewater Management Plan, Chapter 8) The Wastewater Utility should use a rate setting process that complies with standards established by the ++r American Public Works Association. 2.1.4 (1998 Long-Range Wastewater Management Plan, Chapter 8) The Wastewater Utility should use cost-based rates and additional charges that: „I„ 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. ow 05/17/99 3-7 tar a CHAPTER THREE mil sililli 2.1.5 (City Code section 8-5-15F) 4 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. a 2.1.6 (City Code section 4-1-180.I) a 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. 2.1.7 (1998 Long-Range Wastewater Management Plan, Chapter 8) Customers should 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 should be used to offset operations and maintenance costs. a 2.1.8 (1998 Long-Range Wastewater Management Plan,Chapters 2, 5, 7, and 8) The utility should maintain information systems that provide sufficient financial and statistical usi information to ensure conformance with rate-setting policies and objectives. 2.1.9 (1998 Long-Range Wastewater Management Plan,Chapter 8) lio Rates shall be developed using the cash basis to determine the total revenue requirements of the Wastewater Utility. iii 2.1.10 (1998 Long-Range Wastewater Management Plan,Chapter 8) User charges shall be sufficient to provide cash for the expenses of operating and maintaining the O 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 a from the Sanitary Sewer Fund to the Construction Fund for general purposes, or for specific purposes, such as creating a reserve for main replacement. iii 2.1.11 (1998 Long-Range Wastewater Management Plan,Chapter 8) A Working Capital Reserve will be maintained to cover emergencies, bad debts, and fluctuations in cash tiii flow. 2.1.12 (City Code section 4-6-040.E.2) „r The customer classes for the utility shall be single-family(including attached single-family), commercial (including multi-family), and industrial. 3-8 05/17/99 err rrr OPERATIONAL POLICIES 2.1.13 (1998 Long-Range Wastewater Management Plan, Chapter 8) iso The inflation rate should be based on information provided by the Finance Department. 2.1.14 (1998 Long-Range Wastewater Management Plan, Chapter 8) Large industrial users should be charged for services on the same basis as all other users. 2.1.15 (1998 Long-Range Wastewater Management Plan, Chapter 8) The utility should use generally accepted cost allocation principles for all cost allocation purposes. air 2.1.16 (1998 Long-Range Wastewater Management Plan, Chapter 8) The utility's fees and charges should be calculated for the service area as a whole. Rates should be the same regardless of location(except for the inside/outside City distinction discussed below). ,,. 2.1.17 (1998 Long-Range Wastewater Management Plan Policy) When the City takes over existing service of properties outside the City limits by agreement with an adjacent district, the City shall charge the normal in-city rates. tor EXISTING REGULATIONS: 2.1.18 (City Code section 8-5-15C) For customers residing outside the City limits, sanitary sewer rates are 1.5 times the residential City ear rates. 2.1.19 (City Code section 8-5-15D4) Renton provides for a senior and/or disabled citizen discount on City sewer rates. ,,. 2.1.20 (City Code sections 4-1-180.A,4-1-180.B,4-1-180.F, and 4-1-180.I) 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) System Development Charge b) Special assessment charge c) Latecomer's fees d) Inspection/approval fees OW 05/17/99 3-9 way 0 CHAPTER THREE 3.0.0 FACILITY OBJECTIVE: Provide a wastewater collection system that ensures adequate capacity and system reliability, is consistent with land use and environmental protection goals and policies, and is well maintained. POLICIES: 3.1.1 (1998 Long-Range Wastewater Management Plan Policy) Design criteria should be established to provide an optimum performance level and a standard of quality for the sanitary sewer system. 3.1.2 (1998 Long-Range Wastewater Management Plan Policy) All lift stations that will be converted to public maintenance shall have control and telemetry systems that are consistent and compatible with the current City system. 3.1.3 (1998 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. 0 EXISTING REGULATIONS: 3.1.4 (City Code section 4-6-040.F.2) Public sewers shall conform to the latest standards of the City of Renton, as adopted by City Code as well as the Department of Ecology Criteria for sewage works design and 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. All public sewer extensions shall conform to City standards and be consistent with the City Long-Range Wastewater Management Plan. 3.1.5 (City Code section 4-6-040.F.3) 0 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 0 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. Alternative pipe materials may be considered, by the Wastewater Utility, on a case by case basis. Minimum size shall be 8 inches in diameter. err a 3-10 05/17/99 wr OPERATIONAL POLICIES 3.1.6 (City Code section 4-6-040.F.5) s• 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. Oa 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. 3.1.7 (City Code section 4-6-040.F.6) 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. 3.1.8 (City Code sections 4-6-040.F.7) +�• 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. figo 3.1.9 (City Code sections 4-6-010.B) 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 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. 3.1.10 (City Code sections 4-6-040.B) 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. """ 3.1.11 (City Code sections 9-5-1) Any party extending utilities that may serve other than that party's property may request a latecomers' agreement from the City(see City Code Chapter 5, Title IX for methodology). 3.1.12 (City Code section 4-6-O10.C) Any party required to oversize utilities may request that the utility participate in the cost of the project. rrr 05/17/99 3-11 CHAPTER THREE 3.1.13 (City Code section 8-5-11) a Grease and oil interceptors, or other approved methodology, shall be required on all restaurant, garage, and gas station premises and shall be so situated as to intercept the sources of grease and oil wastes but exclude domestic or human wastes. Grease, oil,and sand interceptors 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. 3.1.14 (City Code sections 4-6-040.F.4) 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. 3.1.15 (City Code sections 4-6-040.G.3) 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: S a) 4 inches at a 2 percent slope(1/4"per foot) for single-family residential. b) 6 inches at a 2 percent slope(1/4" per foot) for multi-family,commercial, or industrial. :n 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. 3.1.16 (City Code sections 4-6-040.G.5) If a building cannot be served by a gravity system an approved, private lift station may be utilized to provide service. S 3.2.0 MAINTENANCE OBJECTIVE: Maintain the sanitary sewer system in a safe, reliable, and efficient operating condition. POLICIES: 3.2.1 (1998 Long-Range Wastewater Management Plan,Chapter 7) The City will maintain its wastewater collection system according to the following guidelines: S a) Maintenance shall be performed by the sanitary sewer maintenance staff and supervised by the Field Superintendent. S 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. 3-12 05/17/99 irk rrr OPERATIONAL POLICIES d) Tools shall be obtained and maintained to repair all items whose failure will impact the ism ability to meet other policy standards. e) Spare parts shall be stocked for all equipment items whose failure will impact either the IMP ability to meet other policy standards or the inability to continue providing service to customers. f„ 3.2.2 (1998 Long-Range Wastewater Management Plan, Chapter 7) The City should provide a preventive maintenance schedule for all facilities and equipment. This schedule should 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) Where feasible and practical,equipment should be replaced before it becomes obsolete. rrw 3.2.3 (1998 Long-Range Wastewater Management Plan, Chapter 7) ar. 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. WI 3.2.4 (1998 Long-Range Wastewater Management Plan, Chapters 2, 5,and 7) " Written records and reports should be maintained on each facility and item of equipment showing its operation and maintenance history. 3.2.5 (1998 Long-Range Wastewater Management Plan Policy) 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. 3.2.6 (1992 Long-Range Wastewater Management Plan, Chapter 5) wrr 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. err 05/17/99 3-13 r CHAPTER THREE oil EXISTING REGULATIONS: 3.2.7 (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. 4.0.0 ORGANIZATIONAL OBJECTIVE: Provide the organizational structure and staff necessary to operate the City of Renton's Wastewater Utility system efficiently. POLICIES: 4.1.1 (1998 Long-Range Wastewater Management Plan,Policy) 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. 4.1.2 (1998 Long-Range Wastewater Management Plan, Chapter 7) The Wastewater Utility shall consist of two sections: Wastewater Utility Systems Section and Wastewater Maintenance Section. The Wastewater Utility Systems Section is responsible for project management of CIP projects, planning and design, and customer service. Wastewater Maintenance Section is responsible for inspection, testing and repair of facilities, routine preventative maintenance, and responding to emergencies. 4.1.3 (1992 Long-Range Wastewater Management Plan, Chapter 7) Wastewater Utility customer service is performed by the Planning/Building/Public Works Customer ir Service Division(general) and by the Wastewater Utility staff(technical). 4.1.4 (1992 Long-Range Wastewater Management Plan Policy) Provide the levels of staffing and diversity of skills necessary to operate the City's wastewater utility system. 4.1.5 (1992 Long-Range Wastewater Management Plan Policy) The Wastewater Utility should utilize the expertise in other City departments, according to inter- departmental agreements,to augment the Wastewater Utility's expertise. 3-14 05/17/99 a 6 6 iia CH��PTER N 6 liot E HIE ADJACENT .... 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I I 11 11111111 I 1 111 (11 d1 11 t, ol�lhlll1111111,111u1w1,,1 ',III I „III111 1 1 1IIl'141,111111111''11,111,' 11 1 ' 111111111 IIII 1 111�: 11111111111. II III1UI�hu11111,1 , a I 1,111 111111 Ili, 17 111111 II Ell I',:11111, 1 1111111111 1 „'1111,1,1[1111"11 h 1,,,„„„ppR�,,,7,1111�1 11 1 III f 1l. 1111 1111111,I I11,p11,11,1111;111:111 1,IIII 1pwwd 1111111i 1 1,1 1 1 I I, 11 III I I IIII� � 1 , 11, 1 1, �1 1. ,.IIII III l 1111 'IIII 111111 1111,,11,, jJ..Ili I Ill 111111,I LJL ... I 1 1 1111 III 1�ll,hl�u!II�V I 111 I 11 111 1111111 t 1,111 1,,I,�l1i'111,111 I III,i 1111 Ii6 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. ow 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. Most of the basins served in part by the City are also served in part by other cities or districts. In most cases Renton's sewers are downstream, or at the receiving end of the effluent, from the systems adjacent to the City. Therefore, proper planning for Renton's sewers requires that the plans of these adjacent utilities be evaluated. +ww In addition to adjacent utility plans, the land use plans and policies of King County and the Growth Management Planning Council were also considered. As discussed below the entire planning area is within the Urban Growth Boundary established by the Growth Management Planning Council. Renton supports the countywide framework policies (FW-10 and CO-10) that call for the designated Urban Area to be served with sanitary sewers and prefers cities as the provider of sewer services. Also, as is OW discussed in Section C.5, below, the entire study area has been designated Urban by the 1994 King County Comprehensive Plan. NW B. STUDY AREA As described in Chapter 2 the City of Renton serves seven drainage basins, which are: 1) May Valley, NW 2)West Cedar River, 3) East Cedar River, 4) Lake Washington East, 5) Black River, 6) Lake Washington West, and 7) 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 FIGURES 1 & 2. May Valley Basin is partially served by Coal Creek Water and Sewer District. Soos Creek Water and Sewer District also provide Service within the West Cedar River Basin. 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. Bryn Mawr/Lakeridge Water and Sewer District and Skyway Water and Sewer District serve parts of the Lake Washington West Basin. The study area (Proposed Service Area), shown in FIGURE 7, 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 proposed sewer service area for the most part, corresponds with the current city limits. Deviations from this norm did occur in the following areas: lir • Water District 90 does not currently provide sanitary sewer service within its service area. A considerable amount of development pressure exists in this area. Therefore, the study area was extended into the water service area of Water District 90 to the East Maplewood subbasin limits. The East Maplewood subbasin has been included in the Urban Growth Area (UGA) by the Growth Management Planning Council. Implementation of the UGA designation requires tww 05/17/99 4-1 ww w>i CHAPTER FOUR sanitary sewer service. Renton's Potential Annexation Area (PAA) coincides with the UGA. Consistent with the Countywide Planning Policies, the updated Comprehensive Land Use Plan for the City of Renton has included the East Maplewood subbasin within the City's Planning Area. The details of how sewer service would be provided to the Maplewood subbasin was the subject of a study titled East Maplewood Sewer Collection Report (October 1997). That study has been i updated and is included herein, by reference as Volume 2 of this Long-Range Wastewater Management Plan. a • The City of Renton has negotiated service area boundaries, along the common borders, with Soos Creek Water and Sewer District, Skyway Water and Sewer District, and Cedar River Water and Sewer District. The study area includes the agreed upon service area boundaries. • The City of Renton is currently negotiating with Coal Creek Water and Sewer District and Bryn Mawr/Lakeridge Water and Sewer District to set service area boundaries along their common tat borders. The study area shows the tentatively agreed upon service area boundaries. • Natural boundaries in certain areas make the City of Renton the logical sanitary sewer provider to them. The study area includes the area to the east of the Green River within the City of Tukwila. C. LAND USE 1. CITY OF RENTON EXISTING LAND USE 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. The downtown, the Renton Municipal Airport and the Boeing/PACCAR industrial area now occupy these lands. Significant redevelopment is anticipated for the downtown over the next 15 to 20 years. Areas immediately north and south of downtown are characterized by older single family development interspersed with small-scale multi-family. tat Outside of the central business district, commercial areas are concentrated along the major arterials and freeway exchanges, including Rainier Avenue, Grady Way, Sunset Boulevard,NE 4th Street, the NE 44th Street exit from Interstate 405, and SW 43`d Street. These areas are generally characterized by low ta intensity, auto-oriented strip commercial, but also include Renton's automall along Grady Way and several large-scale retailers. a South of downtown to the city limits, the Green River Valley has developed with manufacturing, office and warehouse uses. The south and eastern portions of the valley include some commercial uses. The Valley has experienced a great deal of development activity in recent years, including a number of new ly warehouses, offices including the expansive Longacres Boeing office campus, a cinema complex, and bulk retail, among other uses. Anticipated development includes several hotels and additional office buildings. Most residential development has occurred on the uplands above the Green River Valley, downtown and Lake Washington to the north. These areas are primarily comprised of single family neighborhoods, although some concentrations of multi-family and commercial uses exist. West of the downtown, residential development extends seamlessly from Renton up onto the West Hill of unincorporated King County. However, on the east side, a lack of available sewer service in the unincorporated area has 4-2 - 05/17/99 a IMP MS LAND USE POLICIES,ADJACENT SYSTEMS& DESIGN CRITERIA created an abrupt transition of housing densities at the city limits. Renton's Potential Annexation Area and proposed sanitary sewer service expansion area on the East Renton Plateau is generally characterized by large-lot single family and vacant, unplatted parcels. This is an area where the City anticipates significant single family growth to occur, following the advent of sewers. irr The geography and hydrology of the Renton vicinity as well as a proactive parks acquisition program by the City of Renton combine to provide significant open spaces that constitute a passive land use. Some larger examples include lands adjacent to the Cedar River and May Creek, Gene Coulon Park on Lake Washington, the Black River Riparian Wildlife Habitat area and habitat areas of the Green River Valley. Nip 2. CITY OF RENTON FUTURE LAND USE To the extent that the City has jurisdiction or can require compliance, development within the service area must be consistent with Renton's Comprehensive Plan. FIGURE 5 is a reproduction of the Comprehensive Plan Land Use Map adopted September 14, 1998. Consistency with the Plan may be required as a condition of sanitary sewer service outside the city limits. The Comprehensive Plan is intended to provide the basis for all development regulations, functional plans and other City plans and programs that may in some way support, implement or derive from the City's land use plans. The Comprehensive Plan is a broad statement of community goals and policies that direct the orderly and coordinated physical development of the City. The Plan anticipates change and provides specific guidance for future legislative and administrative actions. The Plan also serves as a guide for designating land uses and infrastructure development as well as developing community services. The City has had a Comprehensive Plan since 1965. The current Plan, adopted in 1995, was developed and approved under the regulatory requirements of the Washington State Growth Management Act (GMA) and the policy framework of the King County Countywide Planning Policies. While the Plan includes Transportation, Housing, Capital Facilities, Utilities, Downtown, Economic Development, and Environmental Elements, it is the policy decisions expressed in the Land Use Element that gives the Plan its primary direction and cohesiveness. This Long-Range Wastewater Management Plan proceeds from and supports the policies and Land Use Map of the Comprehensive Plan. Utility Element policies have been addressed in Chapter 3. two The Land Use Map,part of the Land Use Element, represents the intended future pattern of land uses in the planning area. The service area addressed in the Wastewater Management Plan includes most of the area within the existing city limits,portions of City's Potential Annexation Area (PAA) and several areas +.r outside both the existing city and the Potential Annexation Area. These areas outside of the City and the PAA include several areas within the city limits of Tukwila (117 acres) and Kent (15 acres) and an unincorporated portion of the West Hill (206 acres). The West Hill area is within Renton's future service ,■„ area by agreement with the Skyway Water and Sewer District. At one time, it was also within Renton's Potential Annexation Area. Although currently removed, it is likely that portions of the former West Hill Potential Annexation Area will be reinstated after anticipated discussions with King County, Seattle, Tukwila and the West Hill Community. The district designations on the Land Use Map correspond to policies in the Land Use Element of the ,,,t Comprehensive Plan and are implemented by the City's adopted Zoning Map and Zoning Code. The land use designations are described below. as 05/17/99 4-3 a CHAPTER FOUR 3. LAND USE DESIGNATIONS r Residential Rural: The designation is intended to preserve natural resources and open space and to protect environmentally sensitive areas by limiting residential development. The policies allow residential development with maximum densities ranging from one unit per 10 acres to 5 units per net acre. No minimum density is required. Residential Single Family: This designation is intended to foster the development of single family neighborhoods and to allow compatible infill development in existing single family areas. Residential densities are generally limited to 8 units per net acre, with allowances for densities up to 9.7 units per net acre for parcels under one-half acre. However, implementing zoning may limit density to a maximum of 5 units per net acre for parcels within one-half mile of the Urban Growth Boundary. Residential Options: The RO designation allows a variety of housing types from small lot, detached ma single family to small-scale multi-family up to four units per structure. At least half of the units in any development must be single family. The designation is typically mapped in areas with an existing mixture of single and multi-family development and between higher intensity commercial and residential uses and single family areas. Densities may range from 7 to 10 units per net acre. However, if all units are detached,densities may reach 13 units per net acre. Residential Planned Neighborhood: This designation is intended to foster the creation of new, higher density neighborhoods. It is typically mapped for large, vacant areas where site planning can assure an integrated development emphasizing single family character and amenity value. Densities can range ad from 8 to 18 units per net acre. Residential Multi-Family-Infill: This designation is intended to encourage infill of existing multi-family areas with compatible development. Density can range from 10 to 20 units per net acre. Convenience Commercial: The designation provides for small-scale commercial uses that serve the personal needs of the surrounding neighborhood. Development may include a residential component of up to 5 units per net acre. The City's Comprehensive Plan is based, in part, on a hierarchy of mixed-use centers, primarily via comprised of residential and commercial uses. These areas are intended to be urban in land use and pedestrian in orientation. The centers vary in terms of the intensity of development and the range of intended market area for the goods and services provided. Center boundaries are intended remain relatively static. Neighborhood Center: At the lowest rung of the Centers hierarchy, Neighborhood Centers are intended to serve the basic, ongoing needs of the residents of the adjacent and surrounding neighborhoods. Residential densities are not specified in the policies. Current implementation allows a range from 10 to 15 units per net acre. Or Suburban Center: These Centers are intended to provide a wide range of consumer goods and services to an area that includes several neighborhoods but not the entire city. The Suburban Center policies also do not currently indicate a density range. However, implementing zoning allows densities of 10 to 20 units per net acre. 4-4 05/17/99 1 eio - LAND USE POLICIES,ADJACENT SYSTEMS& DESIGN CRITERIA Center Downtown: The most intensive of the Center designations, the Center Downtown comprises a 1110 portion of Renton's Urban Center. The policies encourage a broad range of commercial, office, residential and light industrial uses. An overall floor to area ratio of 2:1 is envisioned with continued redevelopment. Retail and service uses are intended to serve the local as well as regional markets. Net residential densities are expected to achieve a range of 25 to 100 units per acre but may reach 150 units per acre under certain conditions. ,,,1 Center Office/Residential: This designation is intended to foster compact and cohesive urban developments in a limited number of select locations. These locations are characterized by high environmental amenity value and gateway locations. Primary uses are envisioned to include higher intensity residential or office development, hotels and convention centers, research and development facilities and corporate headquarters. Commercial uses may also be included providing that they support the primary uses. The residential component is limited to 35 units per net acre. NO Center Institution: The Center Institution designation identifies areas appropriate for the development and expansion of large public or quasi-public institutions and those related uses that benefit from a location proximate to such public uses. The primary uses may include health care, municipal and post- secondary educational facilities. Employment Area - Commercial: This designation is intended to provide for commercial uses that require large amounts of land or high visibility. Typically located along arterials, low-intensity, auto- oriented, strip-commercial is the predominant urban form in the EAC. Employment Area - Office: The intent of the Employment Area - Office is to promote a wide range of office activities and provide for supporting small-scale commercial uses. While allowing for more intensive high-rise office development up to 25 stories, structures under 10 stories have been more typical to date. Employment Area - Industrial: This designation is intended to create and sustain industrial areas to �r provide the synergistic benefits of proximity and to segregate the more intensive industrial uses for which compatibility with dissimilar uses may be an issue. Supporting commercial and office uses are envisioned as part of the overall mixture of uses in the designation. Much of the more recent industrial 11110 development has been warehouse use. Employment Area - Valley: The Employment Area - Valley designation is intended as a general 1111,, employment category that amalgamates commercial, office and industrial employment areas. The designation is created to provide flexibility in responding to market demands for different employment area uses. Currently, the major use categories are generally segregated by implementing zoning that maintains a specific land use emphasis. However, the district distinctions may be dissolved somewhat or entirely in the future. TABLE IV-1 lists the acreage of Renton's proposed sanitary sewer service area by Renton e. Comprehensive Plan land use designation and with reference to the city limits. As noted above, a portion of the proposed service area is within another city or in an unincorporated area that is outside Renton's Potential Annexation Area. For those areas outside Renton's Comprehensive Planning area, land use designations are adopted by different jurisdictions. 05/17/99 4-5 CHAPTER FOUR rii TABLE IV-1:LAND USE OF RENTON'S SEWER SERVICE AREA ii Area in Acres Area in Acres eii LAND USE DESIGNATION (existing City Limits) (PAA) Residential Rural 1,127 951 iii Residential Single Family 3,784 2,320 Residential Options 306 27 Residential Planned Neighborhood 219 0 ea Residential Multi-Family Infill 489 15 Convenience Commercial 21 3 Center Neighborhood 147 0 Center Suburban 280 0 a Center Downtown 213 0 Center Office/Residential 147 0 Center Institution 227 7 Employment Area-Commercial 363 17 Employment Area-Office 94 0 r�i Employment Area-Industrial 710 43 Employment Area-Valley 1,838 0 iii TABLE IV-2 displays the land use designations for those areas within Renton's service area that are outside of the City of Renton and outside Renton's Potential Annexation Area Ili TABLE IV-2:LAND USE DESIGNATIONS FOR AREAS OUTSIDE RENTON'S PAA irk JURISDICTION (DESIGNATION) LAND USE (DENSITY) AREA IN ACRES Kent(SF-3) Residential(3 units/acre maximum) 15 ea Tukwila(Commercial/Light Industrial Commercial/Office/Light Industrial 77 iii Tukwila(Tukwila Urban Center) Commercial/Office/Light Industrial/ 40 Multi-Family(22 du/acre maximum) King County Residential 91 (Urban Residential 4-12 du/ac) (zone based density : 6 du/acre) a King County Residential 97 (Urban Residential 4-12 du/ac) (zone based density : 8 du/acre) lie King County Residential 19 (Urban Residential 4-12 du/ac) (zone based density : 12 du/acre) a 4-6 05/17/99 IN IMO NIP LAND USE POLICIES,ADJACENT SYSTEMS&DESIGN CRITERIA 4. COUNTYWIDE PLANNING POLICIES ■ King County's Countywide Planning Policies (CPPs) were drafted as a requirement of the Growth Management Act. Adopted by the King County Council and ratified by its cities, the CPPs were intended to create a unified approach to dealing with the County's forecast growth and its consequences, and to guide the individual County and municipal comprehensive planning efforts. Renton's Comprehensive Plan is consistent with the general direction and specific requirements of the CPPs. The CPPs state that "sewer systems are preferred for construction on existing lots and shall be required for new subdivisions" for areas identified for growth within the next ten years. (Policy CO-10) Additionally,the CPPs favor cities for providing urban services to their potential annexation areas. "Cities are the appropriate provider of local urban services to Urban Areas either directly or by contract. Counties are the appropriate provider of most Countywide services. Urban services shall not be extended through the use of special purpose districts without the approval of the city in whose potential annexation area the extension is proposed. Within the Urban Area, as time and conditions warrant, cities should assume local urban services provided by special purpose districts." (Policy FW-13) To the north, west and south of Renton, the City has,or is in the process of establishing, agreements with existing sanitary sewer service providers for current and future service area boundaries. In Renton's Potential Annexation Area on the East Renton Plateau, however, no sewer provider currently exists. As prescribed by the CPPs, Renton should either provide sewer service to this area or contract for such ' services. In no event should another purveyor serve without the City's explicit permission. Finally, Policy CO-1 states, "Jurisdictions shall identify the full range of urban services and how they +rrP plan to provide them." This functional plan answers this requirement with regard to sanitary sewer services. ,,. 5. UNINCORPORATED KING COUNTY The 1994 King County Comprehensive Plan directs Land use within the unincorporated portions of the study area. Policy F-313 identifies that "Public Sewer expansions shall not occur in the Rural Area and on Natural Resource Lands except where needed to address specific health and safety problems threatening structures permitted before the effective date of the County Plan or the needs of public rr facilities such as schools." The City does not see potential service to rural areas as a major impact to our proposed service area. The City will address the need(s) for expansion into the rural area as they arise. All of the study area in unincorporated King County is designated "urban." Urban growth areas (UGAs) are intended to develop at urban densities and with urban service levels. Under the growth management concept, these areas are expected to accommodate the majority of King County's population and employment growth. The Urban Growth Boundary is the division line between the designated urban and r`r rural areas that defines the eastern boundary of Renton's Potential Annexation Area. According to the King County Countywide Planning Policies which provide a policy framework for all comprehensive plans in King County, cities may not annex areas outside the Urban Growth Boundary nor may they "" provide sewer service, except in cases of threat to public health. 05/17/99 4-7 1110 S CHAPTER FOUR Unincorporated areas of King County are divided into community planning areas, each with a community plan. While these community plans were not adopted as part of the 1994 King County Comprehensive Plan, the plans remain in effect and continue as official County Policy. Where conflicts or inconsistencies between the policies of the community plans and the County's Comprehensive Plan occur, the Comprehensive Plan takes precedence. Three community plans, Soos Creek, West Hill, and Newcastle, cover most of the unincorporated areas within the study area of this plan. 6. ANNEXATION When areas outside of the city limits annex to the City, they must be provided with an adequate level of sewer service. The City of Renton will serve annexed areas that do not have sewer service unless a service agreement exists or is negotiated with a neighboring utility. Annexed areas with existing sanitary sewer service must meet the City's sanitary sewer service objectives as they are defined in Section 1.3.0 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. 7. ADJACENT UTILITY SYSTEMS/JOINT USE AND SERVICE AGREEMENTS S 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 Issaquah School District and King County Water District 90. +r • Coal Creek Water and Sewer District(King County Water District No. 107) Utility Franchise Agreement. ori • Coal Creek Water and Sewer District(King County Water District No. 107) Joint Use Agreement. • Skyway Water and Sewer District Service Boundary oil • City of Kent Agreement. • Soos Creek Water and Sewer District(Cascade Sewer District) Service Boundary Agreement(1991). • Soos Creek Water and Sewer District(Cascade Sewer District) Service Boundary Agreement(1997). • Cedar River Water and Sewer District Service Boundary Agreement S 4-8 05/17/99 S er - LAND USE POLICIES,ADJACENT SYSTEMS& DESIGN CRITERIA The City is surrounded by eight adjoining utility entities, seven of which provide sanitary sewer services. 'r These eight utility entities are shown on FIGURE 7. The study area or proposed sewer service area for the City's 1998 Long-Range Wastewater Management Plan is also shown on FIGURE 7. These adjacent utility entities are: a. COAL CREEK WATER AND SEWER DISTRICT ,r„ Coal Creek Water and Sewer District (formerly King County Water District No. 107) provides sewer service in part of the May Valley Basin. The District adopted a Comprehensive Sewer Plan in 1988. They are currently preparing an update to that plan. Its plan for serving May d,„ Valley Basin includes diverting approximately 1,000 acres from the May Valley 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 and Sunset Interceptors. In order to accomplish this diversion, the District is proposing to construct three lift stations and to complete a Coal Creek Interceptor Improvement Project. As part of this update, the City and Coal Creek are making boundary adjustments to remove previous service overlaps. This interlocal agreement will also provide for joint use of a sewer main in Lincoln Avenue for the provision of service to that area and to allow for another portion of Renton's service area to flow into Coal Creek's system. The proposed boundary is shown on FIGURE 7. b. KING COUNTY WATER DISTRICT NO. 90 +■' King County Water District No. 90 (KCWD90) does not currently provide sanitary sewer service. The District does have a franchise from King County that would allow the installation of sewers in County Right-of-Way. In 1970, the district prepared an engineering report for the purpose of developing a comprehensive plan for the district. The Washington State Water Pollution Control Commission and Department of Health approved this comprehensive plan the same year. To date, KCWD90 has not progressed with the development of a sewer system and still is not providing sewer service to any customers. In July 1998, KCWD90 submitted a 1998 Sewer Comprehensive Plan to King County. Renton ,., has reviewed that plan and made comment. The KCWD90 plan covers the urban area on the East Renton Plateau. This same area is within the boundary that Renton is identifying as our proposed sewer service area. r. Countywide Policy FW-13 (KC Ordinance 11446) identifies cities as the appropriate provider of local urban services to urban areas. While this policy allows for cities to provide for service by contract, it is our opinion that this is to allow cities the option to contract with districts that are current providers. The fact that it is the city's option is further emphasized by the third sentence of the same policy which reads "Urban services shall not be extended through the use of special purpose districts without the approval of the city in whose potential annexation area the extension is proposed". 05/17/99 4-9 irr a CHAPTER FOUR The Washington State Growth Management Act (GMA) also establishes that, in general, cities are the appropriate providers of urban service within Urban Growth Areas (section 36.70A.110). oli Based upon the State and County policies, the City is the appropriate provider of sewer service on the East Renton Plateau. For this reason, the study area of this plan includes the area between Renton's easterly city limits and the Urban Growth Boundary. c. CEDAR RIVER WATER AND SEWER DISTRICT tri Cedar River Water and Sewer District (CRWSD) provides service to parts of the Lower Cedar River Basin. However, only a small fraction of the wastewater from CRWSD ultimately flows through the City of Renton's system by flowing through the Soos Creek Water and Sewer District. The majority of sewage from CRWSD flows directly into King County's Cedar River Interceptor located along the Maple Valley Highway. The District's last Comprehensive Sewer Plan was adopted in 1994. Renton and CRWSD have entered into a 1999 interlocal agreement identifying the common service boundary between the two service providers. The Wasmeta Park area is a service area gap between the City and CRWSD. Currently no direct 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 CRWSD is on the south side. d. SOOS CREEK WATER AND SEWER DISTRICT Soos Creek Water and Sewer District adopted a Comprehensive Plan in 1998. In conjunction with that plan, the District and City entered into a 1997 interlocal agreement revising the boundary between Soos Creek and Renton that had been set by a 1991 agreement. Based upon these agreements, the City is the service provider to some areas currently outside the city and Soos creek provides service to some areas inside the city limits. a A 1964 agreement provides for joint use of a sewer interceptor in the Tiffany Park Subbasin, and the 1991 agreement provides 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 arii of Renton. 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. There is a small portion of the City of Kent, south of S. 55th Street and east of the Valley Freeway, that is in Renton's service area. There are no service area overlaps or gaps between the two entities, except for that one small area. 4-10 05/17/99 IMO gill LAND USE POLICIES,ADJACENT SYSTEMS& DESIGN CRITERIA f. CITY OF TUKWILA The City of Renton serves a portion of the City of Tukwila east of the Burlington Northern Railroad and south of Longacres. Tukwila also discharges from a lift station into the KING COUNTY Sewer System within the City of Renton along Monster Road SW. Tukwila prepared a Comprehensive Sewer Plan in 1991. This Plan shows the extension of sanitary sewer service by the City of Tukwila to the south of what they call Basin 10. The portion of`Basin 10' that is south of Minkler Boulevard and east of the Green River is served by Renton dating back to when this area was part of the City of Renton. The 1991 Tukwila Plan also shows the proposed installation of an 8" sewer main north of I-405 in the vicinity of SW 116th Avenue SW and Monster Road that flows through the City of Renton in order to connect to the King County influent line. +rn g. SKYWAY WATER AND SEWER DISTRICT Skyway Water and Sewer District adopted a Comprehensive Plan in 1994. The service area from the District's Comprehensive Sewer Plan is shown on FIGURE 7. The boundary between Skyway and Renton has been set by an interlocal agreement adopted in 1994. Approximately 60 percent of the District is served with sanitary sewer facilities. An area in the southern portion of the District, as well as in the service area to the south of the District, could be served by gravity to the Renton sanitary sewer system. 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 KING COUNTY System within the City of Renton at the north end of the Renton Airport. The eastern part of the District could be served by gravity to the Renton system. 8. AQUIFER PROTECTION ORDINANCE ■• In 1992, the City of Renton adopted an Aquifer Protection Ordinance to protect its water supply from being contaminated. The ordinance regulates land use within the aquifer recharge area in order to protect the aquifer from contamination. As part of aquifer protection the City has designated 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. These zones are shown in FIGURE 6. Land use in Zone 1 is 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. A more detailed description of the proposed aquifer protection policies can be found in Chapter 3. Oil 05/17/99 4-11 S CHAPTER FOUR 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, King County Department of Natural Resources - Wastewater Division, 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 Mil Wastewater in the service area is generated by the population and by non-residential users within it. The Renton Comprehensive Land Use Plan identifies fifteen, separate land use categories. For sanitary sewer planning purposes, these fifteen categories were used to determine wastewater flow rates for the hydraulic computer model. The fifteen land use categories are listed in the Land Use section of this Chapter. Fifteen 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 sit defined as the point at which development is complete within a land use designation. WASTEWATER FLOW CRITERIA us Wastewater flows can be divided into four major components, which are 1) domestic wastes, 2) industrial wastewater, 3) inflow, and 4) infiltration. The wastewater flow criteria used for each or these four components is presented in TABLE IV-3. S a. DOMESTIC WASTEWATER No Domestic wastewater flows are essentially equal to wintertime 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 100 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 iri from this category. S • a 4-12 05/17/99 S LAND USE POLICIES,ADJACENT SYSTEMS& DESIGN CRITERIA c. INFLOW AND INFILTRATION 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. 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-gasket type joints will help reduce infiltration and will improve the +ti• condition and life of the sanitary sewer system. Renton recognizes King County's standard limiting I & I to less than 1100 gpad. Renton considers 1100 gpad the maximum allowable I & I for our system and actively participates in programs and projects to identify and eliminate I & I in the existing system. The criteria Renton specifies for the materials and techniques used in new construction are based upon current industry standards that minimize 1 & I and as such would not exceed the King County criteria of 1 100 gpad. tos IMO UN 09/21/99 4-13 �r. CHAPTER FOUR TABLE IV-3: WASTEWATER FLOW CRITERIA Average Domestic Sewage Flow: 100 gals/day/person Average Population Density 2.7 person/dwelling unit single-family Nil (U.S Census Bureau, 1980): 1.9 person/dwelling unit multi-family Residential Density: Residential Rural 5 dwelling units/acre Residential Single-Family 10 dwelling units/acre Residential Options 13 dwelling units/acre Residential Planned Neighborhood 18 dwelling units/acre Residential Multi-Family Infill 20 dwelling units/acre Mixed Use Density: Neighborhood Center Site specific Suburban Center Site specific ties Center Downtown Site specific Center Office/Residential Site specific Commercial and Industrial Sewage Flows*: Convenience Commercial 2800 gals/acre/day(gpad) Center Institution 2800 gpad Employment Area- Commercial 2800 gpad rrr Employment Area- Office 2800 gpad Employment Area- Industrial site specific Employment Area- Valley site specific oil Recreation 300 gpad Green Belt 0 gpad Inflow and Infiltration( I&I): Peak Inflow and Infiltration 1 100 gpad Peaking Factors System Average 2.0 x Depth/diameter ratio 0.80 * Design flow criteria vary considerably, depending upon land use. ais a 4-14 09/21/99 weir ,., LAND USE POLICIES,ADJACENT SYSTEMS& DESIGN CRITERIA 3. SANITARY SEWER DESIGN CRITERIA +rr 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, +rlr 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 4, Chapter 6 of the City Code. 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. 11111 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, except for limited conditions. 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 err 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-4. UP 09/21/99 4-15 ■rr + CHAPTER FOUR d. ROUGHNESS COEFFICIENT a 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. For sewer modeling, a Manning's equivalent of 0.013 will be used. Typical values are summarized in TABLE IV-4. • e. REFERENCE DATUM The North American Vertical Datum (NAVD) 1988 is the standard 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 a ten (10) foot 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 �r is desirable. These distances are measured edge to edge. err TABLE IV-4: SANITARY SEWER DESIGN CRITERIA Sanitary Sewer Sizing: Peak Wet-Weather Flow emi Minimum Sewer Size: 8 inches in Diameter (6 inches for limited conditions) Pipe Materials: PVC Reinforced Concrete Pipe Cement Lined Ductile 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: oil Horizontal Separation(Parallel) 10 feet Minimum Scouring Velocity 18 inches Hydraulic Criteria: Depth to Diameter Ratio 0.80 Vertical Separation(Perpendicular) 2 Feet Per Second Manning Roughness Coefficient PVC 0.011 Concrete 0.012 Lined DI /Cl 0.012 Vitrified Clay 0.013 a Sewer Modeling 0.013 i 4-16 09/21/99 a LAND USE POLICIES,ADJACENT SYSTEMS& DESIGN CRITERIA 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, may require an analysis. The developer may 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 who will pay OW the costs. 4. LIFT STATION DESIGN CRITERIA wr. 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, IMO October 1985, or any subsequent updates, and shall conform to the latest City of Renton standards and specifications. Detailed standards are included in Title 4, Chapter 6 of the City Code. Requirements relating to the design are listed below. .pr a. DESIGN LOADING FOR LIFT STATIONS ppo Lift stations shall be designed to handle the peak, wet-weather flow from the contributing area. All lift stations, except for private stations for a single family home, shall have a minimum of two pump units, each with the capacity to handle the expected maximum flow. b. DESIGN PERIOD p,,,, 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 p„ 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, except for private stations for a single family home, 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 for 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 pop 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 shall be provided with sufficient wet-well storage to allow adequate time for maintenance personnel to transport, setup, and provide the necessary backup, "W"' during a power outage. Wet-well storage will be designed on the basis of the peak, wet-weather flow. rrr 05/17/99 4-17 a CHAPTER FOUR rot 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. urni Regardless of these velocity criteria, minimum size shall be three inches in diameter. A minimum of four inches in diameter is preferable. Each lift station to be owned by the City shall have control and telemetry systems that are consistent and compatible with the current City system. 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 Nil vandalism, and lift station accessibility. a roor aator oil 4-18 05/17/99 Sig _= God INA i... ...i hosil ift.ii Ina Ilia ilia lama r.ni ti' 4.'4os , • T . r „rAllitibd 1111" --a Illa /-Ht.:-:-:-,.-:-:-::::::-:-.:-:-:-_--_-:-:-:-__--_-_-_-_ ; ----- --- ,1 niff' L- ,,,,p,,i , r -; ••••.jem,.. esrilli ---:-.-:-..:-LK-,-.7-7.-:-:_,_::_____,,,_::,,,_:_:_:_,,,,,,:: ..„,„,.. 1 41 , INrits- ) t . „. 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'''''' lit PG trik rt ,,7 " 44,, k.4'‘'N' '' ' ' 1 :'''"'.4 &Snail .,„,,,IW, %) %,,tvil / __ III ,„ on ,_,,,,,,,„ ., , , ,,,,,. ir , fro f. ..4 • __....1 , ‘4 %T.N..."4 I ...• �. 05: � � max. ,--__'�- � �� I �, by PIE . 5.5 ) f 1MIA SI "film D , #4It LI RC "Illititatig ...... `.",'I ° Ticibrilf-AwN �� ., ' ‘1..;fi ., , i rer.41 .ate .r . ,,., ` I,gI x a , tgli III nill GREEN a�"I/ i s ,,,, •-• ' a ; 4 1 1 yZ 4 S Mom i9 nos St 81.71 d .r4-el : ,. i i .,, ...kr r - �� . . j La a , PANTHER LA �,,., ..... • EE - - - - - a. 1 1 'No . , IS I "ft '„ k = 1 1 17 II A MIN , .», i s �. , u - -_ _ ,...1 , z, ! iff rI - 1 ;. h.1 i Y ________ LAKE _ _ _ : ,. _ ,_ m k I ____ ,r illt r ® EIVILIFIlits_ r1 .„.z This ddcumentis a graphic r --- ntation, not gunranteed _..... milariii worm? �{ A_ `` < 'tito survey�aoira --intended far•ity purpose• only and 11■L� i�� i[� �- based on tTi'e best information •ailable as o the date s:Mil ADOPTED 14 SEPTEMBER 1998 RESIDENTIAL DESIGNATIONS CENTER DESIGNATIONS EMPLOYMENT AREA DESIGNATIONS La Residential Rural , Center Neighborhood - Employment Area - Commercial FIGURE 5 Residential Single Family - Center Suburban - Employment Area - Office CITY OF RENTON Residential Options - Center Downtown Ir Employment Area - Industrial Residential Planned Neighborhood - Center Office Residential Pli Employment Area - Valley LONG-RANGE WASTEWATER MANAGEMENT PLAN L 1 Residential Multi-Family Infill - Center Institution MISCELLANEOUS DESIGNATIONS COMPREHENSIVE PLAN �,v,y o 0 4000 8000 El Convenience Commercial LAND U S E G� - - - --_ City Limits 1 -7___ 1 ”-4000' -- Urban Growth Boundary MAY4, 1999 FN,- 0 16 i IIIIIIIIIN_ _ ..�• ir.�r _ irk irmili Lown ir.r� U...l `a r..di masa ro �...... MIMS # ! EN. iffirlaiirligir= wit ,t- _...„„ritir _ ...... . . . ii lk.4 _ 4 nen 4 -----'-,-__ '\C-() r r of i „,4 , jib! _____ to_ 4r , ��- , _______ __ ______ . . . _________________,_:_:_:_:___ ,,, _ „,__ __________ _ Antt1I 1 ,,,,, 1.x .: i 1====..,� . reek Or _ iaae na5Nuv�lar \ i ■ �1�7 *' II �+ r `� = -- - --= gm P OI* ._1- Y illi'lugh,\' `"i�� . .kr _ ji ; ii i• . ,iiiil q"ov 4 hal NIVII..-atih sler�y a. a ti,....76,naremink �r � . Y w—I 4. ” "-f m� ! inti®a,. ,,,,,r4,,,ATI ! I IIIIWL11- . * UNIT i �t tFtel..r _ Lig rop ��.0111 IM m, Iii 1. ' _1...__.I_= �y�j� ��r� illir 4114®VIEEE® 1.,, ali ,,,,,,��'� f ,,,,,, i � , L4...nik Age ppEES ,+ I i i a iP�! ."�i•��,,/...mickw ��' ��i� E I�hl.ry1�[L��"t jai, { ®�t ,el,o a .{WI • '1��i 11 1 }.. y9 _._ , i„.._ ■ rink , F f \ '4, vippli .00. - —Jr ' ,, A �u��rinipump-ia a wr. ��Ir ,,--,-,--:-.N 1`1 ` imp , / 11.11 3,_ e•;;.. 011 NIEL' hi, Mt rimir .. 7 . € Aisi XE KATHLEEN - lk lig {� , , MA kçLr( tr-P �. I illi ) rill Ill ' —' ' .°1 irfrAilin 1.41re"- n el Bm. 1,‘ ,..- . i t _lava et,/,, F.,,v414 i A ,53,... ,•.... . ‘,.., 14 Iiiiiititur wow ,,3 i : .- irl, ...„ ...,, ../007... . „ „, 7 .. 7 ; 3 7 ,ers. r-- i la W___ 1 ,,,N, ,nifili.•„„, ...„,,,..... 4. ...„,..b 1 MI ' ‘ ' hoi„ "1"\.", ,, s 11 I d , ,s, " .....4 I \ i Ii\i ;E i...% '1 " "�\ Y � 1►�• ""fib Ai•. '"v"f�„1 Y 1---_:-- _ i f/"� Tc Jib ,, VA 1 MI ..... i irto: ! `� ter � FIt .... . i SPRING LAKE Y In I ... , M ' :. ; _— SHADY LAKE i a f Y x... 1 I®PANTHER ft ....g ________________________ _____ , _ - Y " &MY MO . \ 1 s , Lt ,; FIGURE 6 ------------CITY CITY LIMITS CITY OF RENTON f ..... PROPOSED SANITARY SEWER SERVICE AREA LONG-"RANGE WASTEWATER Co z000 4000 MANAGEMENT PLAN -1": AQUIFER PROTECTION AREAS MAY 4, 1999 Hwy Rock Diemm ,� t� S 202nd St S 202nd St pesire pr S^ W - -- 20y SE 201st St. ------------------ ` SE 201st St St - G4 EI;VESIRE _ - S'202nd St __ _ - _ - --- _` _ - _ _ _-- N L SE202nd St. ---------------- SE 184 h 17 S 203rd PI S 203rd St Q ___ _ _—_-__ _s s SE 202nd PI N T -- V S TMS 55th.S+T .- -^.� . - - - c -- - - - - - E 14^ry S192ndSt -_----_-- v, S 92nd St f '� ��------- NT SE 192nd St SE 192nd St SE 192nd St SE 192nd St --- — — — — — — 2 d _ — — — — — — — — — w _ _ S 194th St e a - - - _ - - - - - (/� �3=) a4i SW 194th St 1 m S w - — — - - - — > t` JJJJVVVV _ _ �I ---- — — — S 196th St S 196th St N a �s w j _- _ 96�� j �J LAKE jf �+ r� 1�r _—� SE 196th St SE 196th St L - - - - - - - - - - - - - SE 1 4% l j l %H l li S196th St f r___ SE 196th St, _ _ ---------- j vi _ _ - - a N - --- a 6th --— __ O a `7 ,1 n o a 198th pi W PA1 V L 11 L L 1111 SE 198th St th - - - -_-_- - -_- -_-_- -_- - - w St ,o S 199 ¢' �+ <E 199th y SE � _ -_- -- -- _ -_-_ _ th st �% 199th _•�• S 200th St _ S 200th St SE St 1 SE 200th St - - -- - - - - - - - - - - - - - - - ___ 1SE200t4�t SE 200th St SE 20 St ------------------- _ !_ —, � — — — —— ------ ----- CITY LIMITS Y -•-•-•-•-•-•-•-•-•- URBAN GROWTH BOUNDARY ti o CURRENT SANITARY SEWER SERVICE AREA ADJACENT UTILITY SYSTEMS ®NT PROPOSED SEWER SERVICE AREA NEIGHBORHOODS WITH SEPTIC SYSTEMS IDENTIFIED AS 0 2000 4000 AREAS OF CONCERN BY SKDPH SCHOOLS NOT CURRENTLY CONNECTED TO PUBLIC SEWERS FIGURE 7 CITY OF RENTON LONG-RANGE WASTEWATER MANAGEMENT PLAN PROPOSED SEWER SERVICE AREA ADJACENT UTILITY SYSTEMS SEPTEMBER 17, 1999 ¢ S 202nd St S 202nd St - -- 20y SE 201st St. ------------------ ` SE 201st St St - S'202nd St __ _ - _ - --- _` _ - _ _ _-- N L SE202nd St. ---------------- _ S 203rd PI S 203rd St Q ___ _ _—_-__ _s s SE 202nd PI N T -- N - - __ - _ N - __—_ __- - -_- - S 204th St " SE _ ——_ _ _ _ _ 204th St N E 203rd P L a a a S 204th i y = _ SE 204t St u��y�14y - _ _ _ _ _ _ _ _ _ _ - - - - - - - - - - - - - - -- `l� i v_ 3 L S206thSt S206thSt - S�5th g N - 0 - - - _ _ _ _ _ _ _ _ - - - - __ a PI - -- =_---_----- f�+- -- -- -- -- S061_- 207th SE 206th PI -_- - ------------- - -- m SE 207th St SE 208th St 207t A SE 208th St SE 2D$th St LL - --- ---- - -- -- -- _ SE�208th St ` _ _ _ = _ _-- _ _ _ _ SE 208th St 208th St SE 208th SE 208th St - - - - - - - - - - - - - SE 209th St T' < SE 209th F --_ _-_ ----------- d u S 210th Stv - - - - - - ----------- Q� L a a - - - -_-_-_-_- - - --_-_-_-_-_- - v' c SE 211th SE 210th P; o JE ___'- —_ _--_------_ S 212th St tlh 5 212th Wy f -_ n - CITY LIMITS Y -•-•-•-•-•-•-•-•-•- URBAN GROWTH BOUNDARY ti o CURRENT SANITARY SEWER SERVICE AREA ADJACENT UTILITY SYSTEMS ®NT PROPOSED SEWER SERVICE AREA NEIGHBORHOODS WITH SEPTIC SYSTEMS IDENTIFIED AS 0 2000 4000 AREAS OF CONCERN BY SKDPH SCHOOLS NOT CURRENTLY CONNECTED TO PUBLIC SEWERS FIGURE 7 CITY OF RENTON LONG-RANGE WASTEWATER MANAGEMENT PLAN PROPOSED SEWER SERVICE AREA ADJACENT UTILITY SYSTEMS SEPTEMBER 17, 1999 hp 6 6 -Vi..!-Zilftrf,i,::::',',,:::-','"....: • .' .. , .....,..,„„„..,,,.,,.,......,,., ,.. . till SYSTEM ANALYSIS it- AND RESUI1S .. ..„:„...:„....,:„.;;;,..„:„. ...,,.„......„.......„...„,,,,„„„:,„..„,„,..,..,_;::"::;;.'41.''",.-.- '''''''''''''• '--''''-'001 tr'• ill t, ..t ,•. . .,:,._. ..t, v: . --' ''i::;:'-,;:',At:' --'::,-, - -''';',.1;-`.,''. 1-t,,,::-.;;i7'.,1,:,;-;',!--,:--;''''',.:.-:,.;-- :;-,','' "t,--•-• .',t"';'-','',;';','.' *--' ''' ' ' .. .,.'''.. :.,.. ..... 60 ... . .., • ..„..... ... ....„ I,: . ...,.. i ii. - - ... ., ... .--- " . ...0,.... . " .6. ..e":..:A i....74."-,, • ... . ,... ..., .,. Z.... ..., - 11111 , , , -,..,•;:„ • -.441011111 1 r . ....1/4, ., ""'"'"-,,,-,' ' • • ..,,, till 6 tio MO IOW 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 are identified and described in this chapter. The results of either their hydraulic or structural analysis is then presented. The three systems are the wastewater collection system, lift stations, and the telemetry control system. 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 that fall into three categories: deficient capacity, aging pipes, and infiltration and inflow. Capacity problems in the existing sanitary sewer system, at saturation, 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, at saturation, 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 evaluating and prioritizing the replacement of 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 and rehabilitation of existing pipes and manholes, replacing damaged pipes, and eliminating illegal connections to the sanitary sewer system. f1" Combined sewers are designed to carry both stormwater and wastewater within a single system. Current design practices in the City of Renton do not allow combined sewers 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. 1. HYDRAULIC ANALYSIS err A hydraulic computer model of the City's sewer system was developed as a part of the 1992 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. The computer model was further calibrated using data accumulated in the Infiltration/Inflow program completed in 1995. wr 09/21/99 5-1 CHAPTER FIVE 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 up 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 planning area. 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 a 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. S 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 database for each pipe section. The maximum capacity of each pipe section was determined using the Manning's equation. A depth to diameter ratio of 0.80 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 computer model using the invert elevation of the upstream and downstream manholes calculated the slope used in the Manning's equation. The expected peak, wet-weather flow rate at saturation was calculated using the various flow rates entered onto the model database. A peaking factor of between 2.0 and 5.0 was applied to the domestic flow rate entered into each manhole. The inflow and infiltration inputs were based on the results of the City's 1995 I& I Study. 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. TABLE V-1 lists the peak wet- weather flow rate projected for the fourteen interceptors that are the City's major connection points to King County. 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 85 percent. This provided a safety factor that would help account for variations in the Manning's co-efficient and missing data not entered into the computer database. 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. 5-2 09/21/99 +r. ,rr SYSTEM ANALYSIS& RESULTS TABLE V-1: SATURATION PEAK WET WEATHER FLOWS AT MAJOR KING CO. CONNECTIONS +�+ Interceptor King 1995 Peak Wet Weather Flow Saturation Flow County (Brown and Caldwell l&l Model) (Peak Wet Weather) Manhole Renton—Coal Creek Interceptor M-6 (Not Modeled) 908,708 GPD Kennydale Interceptor R02-18 1,160,000 GPD 2,064,530 GPD North Renton Interceptor R01-32 5,930,000 GPD 6,805,716 GPD West Renton interceptor R01-20 (Not Modeled) 5,056,955 GPD SW 16`h Street Interceptor R18-1 (Not Modeled) 908,708 GPD "" Renton Industrial(south) R18-11 (Not Modeled) 764,281 GPD Talbot Hill Interceptor R18-19 1,020,000 GPD 1,480,609 GPD rrr Thunder Hill Interceptor R01-8 (Not Modeled) 1,760304 GPD South Renton Interceptor R01-14 (Not Modeled) 893,102 GPD Cascade(Tiffany Park) Interceptor R10-32 (Not Modeled) 1,270,846 GPD rr+ Central Renton Interceptor R01-26 (Not Modeled) 2,924,738 GPD Heather Downs Interceptor R10-26A (Not Modeled) 922,953 GPD +Yr East Renton Interceptor R10-24 (Not Installed in 1995) 3,030,475 GPD East Cedar River Inter.(Future) (Future) (Future) 5,801,000 GPD err This model is used by the City 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, «. the City is generating the physical data for the remaining sewer system that is not currently modeled. The City is also working with King County as part of the Inflow and Infiltration Program. As part of that program, King County will be performing flow monitoring and investigation on all of the sewer systems SW within their treatment service area. The City will utilize the flow information gathered by King County on the Renton system and develop a new model. The new model will be coordinated with King County's model and have the capability to provide estimates of base and peak flows in its basins at various time a• intervals as well as saturation. 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. +.r The Sanitary Sewer Maintenance Division owns and operates its own sewer video inspection equipment. At this time, the video equipment is used approximately three days per month. 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 two people to operate. If traffic control is necessary, two dot 09/21/99 5-3 w+ a CHAPTER FIVE additional people are required. At the current rate, it will take fifteen 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 videotapes taken by the maintenance crews are stored and cataloged at the City Shops. However, sanitary sewer videotapes of new additions are stored in uncataloged boxes that are then placed in the City's archives. The City should catalog all sanitary sewer videotapes using a computerized database and store them in a single location for easy retrieval. B. SYSTEM-WIDE CONCERNS 1. KING COUNTY-INTERCEPTOR SURCHARGE "w During peak flows, KING COUNTY will use its interceptors for storage of wastewater and for controlling flows in the East Division Reclamation Plant(EDRP). This may result in surcharging of the KING COUNTY interceptors. KING COUNTY reserves the right to surcharge its interceptors to an elevation of 25 feet. KING COUNTY has never reached this extreme; however, the City has experienced sewer surcharge problems in the low-lying areas. As a result of KING COUNTY's surcharging, it is possible that additional wastewater could overflow in low-lying areas through manhole covers and side sewer connections. ■r The City has not designed facilities to accommodate a sewer surcharge to an elevation of 25 feet. The City's current position is that KING COUNTY is responsible for providing adequate capacity within its interceptors and wastewater treatment facilities. In addition, the City considers KING COUNTY to be responsible for proper effluent disposal. During the preparation of the Comprehensive Sewer Plan, no specific analysis was made of the effect of KING COUNTY's surcharging on the City's sewer system. KING COUNTY should continue to study and identify areas of potential risk and alternatives to mitigate this problem. King County has increased the influent and effluent capacity at EDRP and has begun the installation parallel interceptor facilities. This significantly lowers the chance of surcharging but does not eliminate the 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 that 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 tai 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 within the City's service area and within the adjacent utility, to correct the problem. rrrr 5-4 09/21/99 wr SYSTEM ANALYSIS& RESULTS 3. FRANCHISES miso A franchise is an agreement in which a city or county provides permission for a service provider to install utility lines in that jurisdictions rights-of-way. Renton issues franchises allowing adjacent ;r, districts authority to install sewer facilities in City rights-of-way to provide service to those portions of their districts inside Renton city limits. Similarly Renton holds franchises with King County allowing the City to install sewers in County rights-of-way. ar Copies of the franchises are included in Appendix "B". Following adoption, the City will work with King County to obtain franchise authority to utilize their rights-of-way to install facilities to provide r sewer service to Renton's proposed service area. It has also come to our attention that King County Franchise No. 620 has expired. The City will be contacting King County to renew this franchise. 4. STRUCTURAL PROBLEMS WS The following is a discussion of specific problems that are associated with the gravity sanitary sewer system in the City of Renton. a. AGING SEWERS rr Many of the gravity sewers within Central Renton, the Central Business District, and the Highlands were constructed in the 1940's as a result of housing constructed for the Boeing plant in Renton during World War II. 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. The City should continue this process. it The 1992 Long-Range Wastewater Management plan identified some of the older sewers and established a capital improvement program to replace and upgrade them. Since that time, the City has replaced sewer mains in Central Renton and the Central Business District and replaced SW the major trunk line in the Highlands. The City should continue replacing sewer mains prior to them becoming a maintenance liability and prior to their failure. W` b. REVERSE SLOPES AND PIPE SAGS A major maintenance problem associated with sanitary sewers that are laid with a reverse slope or have 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. The Wastewater Maintenance Section has met its goal of keeping the City's mains from being blocked by root intrusion. 09/21/99 5-5 CHAPTER FIVE 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 removal systems. Newer restaurants have been and will continue to be required to install grease removal systems. However, many grease removal systems are not properly maintained. 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. A proper monitoring program reduces maintenance time involved in removing grease buildup. vii The City has achieved moderate success in noting problems and identifying the sources. The Wastewater Utility has also worked with new construction and tenant improvements to ensure that these users are installing proper grease removal system and/or bio-agent facilities. As part of a program to prevent the build-up of grease in City mains, the City should work toward the installation of grease removal systems and/or bio-agent facilities in all restaurant and food processing type facilities and proper maintenance of those facilities. A program should be established requiring owners of grease removal systems 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 removal systems should be assessed to property owners. 5. 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 1-90, 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 r 5-6 09/21/99 r err SYSTEM ANALYSIS& RESULTS 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 r unlikely, ground shaking and failure resulting from a regional magnitude 6.5 to magnitude 7.5 earthquake is likely during this decade. The recurrence interval for deep earthquakes (>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 wilI 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 (lhen and Hadley, 1986). Thus, facilities designed for the Duwamish valley and Maplewood area will have to meet higher standards of seismic design. oro Water and sewer systems of the Renton area will very likely experience the significant ground motion associated with about a magnitude 7 earthquake. 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). 41. 6. SEPTIC SYSTEMS es There are still a small percentage of developed properties within the Renton City Limits that are served by private septic systems. In addition, the developed properties within the proposed service area but outside of the city limits are primarily served by private septic systems. There are several areas that have been identified by the Settle-King County Department of Public Health as being areas of concern. These areas are typically identified as having smaller lots, poor soils, older septic systems, and high or perched water tables. These areas, as shown on FIGURE 7 are: on 1. The majority of the area between the Renton City Limits and Skyway Water and Sewer District and north of Martin Luther King Way ""' 2. The Puget Colony Homes Plat off 142nd Avenue SE(at approximately SE 134th Street) 3. The White Fence Ranch Plat off SE 128th Street (at approximately 156th Avenue SE) 4. The Gerber's Addition Plat off 148th Avenue SE (at approximately SE 124th Street) 5. Sierra Heights Divisions 3 and 4 vicinity of 126th Avenue SE and SE 103rd Street OW 09/21/99 5-7 IMP • CHAPTER FIVE Two other areas that are of a lesser concern are: The area along 138th Avenue SE(between SE 128th Street and SE 136th Street) The area along 148th Avenue SE(between Se 120th Street and Renton— Issaquah Road) The Sierra Heights area has sanitary sewers direct adjacent to the area and a Local Improvement District (LID) for extension would be immediately available if the property owners or Seattle King County Department of Public Health chose to initiate one. a None of the other areas currently have sewer service directly available to them. However, sewers are proposed or being installed in the vicinity of these areas. The City has a project scheduled for 2000 to install sewers in 80th Avenue S, between S 130th and S I3211d. This is a neighborhood that has had septic tank problems and has been talking to the City about sewer service. Following the recent East Renton Plateau Annexation, a developer is already installing the sewer main in NE 4th Street (SE 128th Street) as far as 152Nd Avenue SE. Sewer will be available for extension by LID into the Gerber's Addition Plat in 1999. The pending Burnstead Development will likely have sanitary sewer to 148th Avenue SE and SE 136th Street by the end of 2000. The pending Knight Annexation, the development of the parcels in that annexation, and the extension of a gravity main to Maplewood Heights School should bring sewers back to SE 142nd and SE 136th Street by the year 2002. The extension of sewers to the Puget Colony Homes Plat by LID could be completed at that point. If sewer service is needed prior to the year 2002, Puget Colony could be served by a temporary lift station to either the sewer in NE 4th Street or to a line installed by Burn stead. There is also the pending Morrison Annexation and development that will bring sewer to 154th Avenue SE. If the projected schedules are met, the City should have sewers to the west boundary of White Fence Ranch in the year 2000 or 2001. An LID could then be formed to provide sewers to that plat. The Department of Public Heath expressed concern about the lack of sewer service to schools on the east Renton Plateau. Renton will be working with the Issaquah School District toward providing sewer service to the schools. The three Issaquah Schools as shown on FIGURE 7 are: A. Briarwood Elementary School B. Liberty High School C. Maywood Middle School In Volume 2, FIGURES 9, 11, 13, 15, and 17 also show the location of the Issaquah Schools as related to potential service options. In addition, Renton School District's Maplewood Heights Elementary is on a temporary lift station and would benefit from the availability of gravity sewers. Providing service to areas with failing septic systems and to the public facilities in the area is one of the criteria looked at when selecting routes or phasing sewer improvements. The Department of Public Health also identified the Lake Kathleen area, the Lake McDonald area, the Maple Hills Estates area, a couple of mobile home parks along Renton — Issaquah Road, and a small neighborhood along SE 121st Place (off 176th Avenue SE) as places where there are also problems with 5-8 09/21/99 SYSTEM ANALYSIS& RESULTS septic systems. These areas are all outside of the Urban Growth Boundary (UGB). At some time in the M. future, the Renton Wastewater Utility, in coordination with King County, may have to take action to provide relief to these areas outside the UGB. Potential solutions may include tight—lining sewers to these areas or the development of community drainfields where feasible. 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 FIGURES 1 and 2 for a location of basins. A brief summary of the status of each basin follows. e` • A portion of the wastewater within the May Valley Basin is currently diverted into the Lake Washington East Basin which will eventually cause an overload of that system. Either construction of the May Valley Interceptor or upsizing of lines in the Lake Washington East Basin will be necessary to correct these problems prior to reaching capacity. 110 • The capacity constraints that the West Cedar River Basin had have been taken care of by the installation of the East Renton Interceptor. There are still some older sewers in the Central Renton and Windsor Subbasins that should be scheduled for replacement. • Lake Washington East Basin currently receives wastewater from the Devil's Elbow Lift Station. Modeling of this basin projects that the Lake Washington Subbasin may ,r,, develop capacity problems as the upstream basins build out. The North 6th Street Interceptor is projected to have capacity problems as building increases in this subbasin. The City should continue to monitor these subbasins for capacity and need to upsize. The older sewer mains in the North Highlands, South Highlands, North Renton, and - President Park Subbasins are reaching the end of their useful lives and should be scheduled for replacement. • The Panther Creek Subbasin in the Black River Basin may be at or near capacity. Zoning changes in the Renton Industrial Subbasin may cause an increased demand for sewer capacity. The City should continue to monitor this subbasin for capacity and need to upsize. • In the Lake Washington West Basin, the West Renton Subbasin has sections of sewer lines that experience some capacity problems. The South Earlington Subbasin has a large quantity of sewer mains that are over fifty years old. The City should program to replace and upsize these mains. • The Duwamish Estuary Basin is for the most part undeveloped and is not experiencing capacity problems at this time. MAY VALLEY BASIN The May Valley Basin is located in the northeast part of the City. Most of this basin is currently .ow unsewered and is located on the periphery of the City's current service boundary. The May Valley Basin is jointly served with the Coal Creek Utility District. The City serves approximately 430 acres of this erio 09/21/99 5-9 •r CHAPTER FIVE basin which consists of primarily single-family and light commercial land uses. The ultimate sewerage of the May Valley Basin will be through the extension and completion of the proposed May Valley interceptor. The portion of the May Valley Interceptor necessary to serve the southwest portion of the basin that is in the City's Limits would be mostly constructed in existing roads. Construction of the entire facility, farther to the east, faces environmental and regulatory challenges. The May Valley Interceptor is not scheduled to be constructed during the six-year time frame of this plan. King County (Metro) has studied the proposed installation of this interceptor and this information is documented in a report titled May Valley Basin Wastewater Conveyance Plan Report. 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. Because the Devil's Elbow Lift Station discharges into the Lake Washington East Basin, the Honey Creek Subbasin is considered part of that major basin and it will be addressed in that section. rr 2. WEST CEDAR RIVER BASIN The West Cedar River Basin includes the eastern portion of the City of Renton bordering the Cedar rr River. This basin, which consists of primarily single-family and multi-family developments with some commercial and light industrial land uses, is approximately 3117 acres. This basin includes the Central Renton, Windsor, Cemetery Hill, Heather Downs, Orchards, and Tiffany Park Subbasins. rr a. CENTRAL RENTON SUBBASIN S The Central Renton Subbasin includes the central business district of the City located north of the Cedar River and south of North 3rd Street. This 146-acre subbasin consists primarily of residential and commercial land uses. The City replaced the majority of the sewer collection system, in this subbasin, in 1995. The City also rerouted the primary flow of the 24" main in North 4th Street down Factory Avenue North to the new King County trunk in North 3rd Street. The 1995 sewer replacement project focused on that portion of the subbasin that is in Zone 1 of the aquifer. There is approximately 1700 feet of old sewer main, at the far west side of the subbasin, that is outside of the aquifer and was not replaced. These mains should be scheduled for replacement in the near future. b. WINDSOR SUBBASIN S The Windsor Subbasin includes the Windsor Hills, Monterey Terrace, and Highbury Park neighborhoods. Land use in this subbasin consists primarily of single-family residential with some multi-family developments. This subbasin is approximately 282 acres. It connects into the a KING COUNTY Interceptor at North 3rd Street and Factory Avenue North. The sewers in this basin are middle-aged with the oldest lines being those in Windsor Hills. air The Transportation Division is undertaking a study to determine the street rehabilitation needs, cost, and funding possibilities for the Windsor Hills Neighborhood. Given the age and maintenance history of the sanitary sewers in the Windsor Hills Neighborhood, the Wastewater Utility should evaluate the sewers for possible replacement or rehabilitation in conjunction with a 5-10 09/21/99 �wr r, SYSTEM ANALYSIS&RESULTS any street rehabilitation. The sewers in this subbasin are on the City's list of highest priority sewers for evaluation of replacement. c. CEMETERY HILL SUBBASIN The Cemetery Hill Subbasin is located primarily south of NE 4th Street. This 607-acre subbasin 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 connects into the KING COUNTY Cedar River Interceptor along the Maple Valley Highway. This subbasin has adequate sewer capacity for existing development. d. HEATHER DOWNS SUBBASIN The Heather Downs Subbasin is located along the eastern border of the current city limits. This — 375-acre subbasin consists primarily of single-family residential development with some multi- family developments in the northern portion of this subbasin. The construction of the East Renton Interceptor and the rerouting of upstream flows have resolved previous capacity �. problems in this 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. e. ORCHARDS SUBBASIN W. This 375 acre subbasin is located primarily between NE 4th Street, Duvall Avenue NE, NE 9th Street, and Union Avenue NE. This area serves single-family and multi-family residential land uses. This subbasin flows into the East Renton Interceptor. The sewers in this subbasin are ..r newer and there are no indications of capacity or structural problems. £ TIFFANY PARK SUBBASIN The Tiffany Park Subbasin is located on the south side of Cedar River. This 1,464-acre 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, and KING COUNTY's inverted siphon crossing 09/21/99 5-11 MOO Ertl CHAPTER FIVE oil the Cedar River was replaced by a new inverted siphon which is sized to accommodate these peak flows. 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 lilt station may cause capacity problems in the joint use facility. Monitoring of the flows needs to continue, in order to minimize risk. 3. EAST CEDAR RIVER BASIN a The East Cedar River Basin is located at the east side of the proposed service area. The basin extends from just inside the city limits to the Urban Growth Boundary east of the City. The basin can be partially served by gravity through the East Renton Interceptor. New interceptors for the Central Plateau and East Plateau Sub-Basin, may be necessary. Options to provide service to this basin are discussed in more detail in Volume 2. +rte The majority of this basin is currently unsewered. This basin is approximately 2,647 acres and consists of primarily single-family land uses. A significant portion of this basin is already developed with subdivision. All of these developments are on private septic systems. Problems with some of the existing septic systems, the needs of the schools in the area, the lack of ability to develop existing platted lots on septic systems, and the desire by some to develop some of the larger tracts in the area highlight the need for sanitary sewers in this basin. 4. LAKE WASHINGTON EAST BASIN The Lake Washington East Basin is located in the northern part of the City and includes the Kennydale Lakefront, Lake Washington, West Kennydale, East Kennydale, Honey Creek, Sunset, Stonegate, North Highlands,Presidents Park, South Highlands, Boeing Industrial, and North Renton areas of the City. The City serves this entire basin of 3,325 acres, which consists of a variety of land uses including single- family and multi-family residential, light commercial and heavy industrial activities. The wastewater collected in this basin is transported to KING COUNTY's East Side Interceptor at several connection points. "'it The installation, in 1997, of the Sunset Interceptor allowed for the removal of the Sunset Lift Station. This interceptor was designed and installed by the City, with King County's (Metro) support, to relieve a capacity concerns created by the County's delay in constructing the May Valley Interceptor. The Devil's Elbow Lift Station was rehabilitated in 1991, to provide reliability to the station and stabilize a the location of the force main. The installation of the Sunset Interceptor removed the peek overflows, from the Sunset Lift Station,that used to flow to the Devil's Elbow Lift Station. a. KENNYDALE LAKEFRONT SUBBASIN The Kennydale Lakefront is the northernmost subbasin in the Lake Washington East Basin. This No 235 acre subbasin serves primarily residential communities and includes the Lake Washington Oil 5-12 09/21/99 a OW SYSTEM ANALYSIS& RESULTS Flush Station and Lake Washington Lift Station No. 2, which serve the residential community adjacent to Lake Washington (Coleman Point). This subbasin, which has almost reached saturation development, connects into the King County Interceptor at three locations along Lake Washington Blvd. Those locations are near N. 36th St., N. 38th St. and N. 40th St. The Kennydale Lakefront sanitary sewer collection system is a low-pressure, force main. Water "P from Lake Washington is pumped periodically into the force main through the 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 KING COUNTY East Side Interceptor. The original force main was installed in 1972 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. gig 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 rw 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. LAKE WASHINGTON SUBBASIN vr The Lake Washington Subbasin, which is 170 acres in size, serves primarily residential uses, including both single-family and multi-family developments, along Lake Washington Boulevard and west of Interstate 405. The subbasin connects into the KING COUNTY East Side Interceptor at Lake Washington Boulevard, south of 28th Street. The sewers in this subbasin are newer and in good condition. The basin is largely developed and is not projected to create any capacity concerns. i` The sewer main in North 28th Place does, however, accept upstream flows from the West Kennydale, East Kennydale, and Honey Creek Subbasins. Modeling of this basin projects that this main does not have the capacity to handle full development of these subbasins. The ei• Wastewater Utility should monitor the capacity of this line and program to upsize the mains. c. WEST KENNYDALE West Kennydale is a small, 136-acre subbasin serving single-family residential properties. The sewers in this subbasin are newer with the oldest being approximately twenty years old. Except ..� for the Highgate Lift Station, there are not any current or future capacity concerns for this basin. The Highgate Lift Station has been scheduled for elimination with construction anticipated in 1999. As this subbasin, along with East Kennydale and Honey Creek Subbasins, becomes fully W. developed,the flows will cause a capacity concern in the Lake Washington Subbasin. 09/21/99 -13 + CHAPTER FIVE d. EAST KENNYDALE East Kennydale is a small, 154-acre subbasin serving single-family residential properties. The sewers in this subbasin are newer with the oldest being approximately twenty years old. A large portion of this subbasin is not currently served by sewers. The Wastewater Utility is scheduled to begin installation of the East Kennydale Interceptor in early 1998. It is anticipated that the collector sewers will be installed by developer extension or Local Improvement District within five to ten years. The installation of the East Kennydale Interceptor will allow for the removal of the Azalea Lane Lift Station. There are not any current or future capacity concerns for this basin. As this subbasin, along with West Kennydale and Honey Creek Subbasins, becomes fully developed, the flows will cause a capacity concern in the Lake Washington Subbasin. e. HONEY CREEK SUBBASIN The Honey Creek Subbasin serves primarily residential uses, including both single-family and multi-family developments. The 239-acre Honey Creek subbasin is served by the Devil's Elbow Lift Station. This lift station currently pumps wastewater collected in the Honey Creek Subbasin into the East Kennydale Subbasin which flows into the Lake Washington Subbasin. The Wastewater Utility is in the process of replacing this station and expects the project to be completed in early 1999. The Devil's Elbow Lift Station can be removed from service after completion of the May Valley Interceptor and the Honey Creek Interceptor. There are not any current or future capacity concerns for this basin. As this subbasin, along with West Kennydale and East Kennydale Subbasins, becomes fully developed, the flows will cause a capacity concern in the Lake Washington Subbasin. f. SUNSET SUBBASIN The 642-acre Sunset Subbasin serves single-family residential, multi-family residential and commercial developments. The portion of the subbasin inside the City Limits is primarily developed and connected to sanitary sewer. The portion of the subbasin outside of the City is partially developed with single family with on-site sewage disposal. The completion of the Sunset Interceptor and elimination of the Sunset Lift Station in 1997 removed the capacity concerns in this subbasin. The majority of the sewers in this subbasin are around thirty years old. g. STONEGATE SUBBASIN Stonegate is a small, 143-acre subbasin serving single-family residential properties. The sewers in this subbasin are newer with the oldest being approximately ten years old. The subbasin naturally flows toward May Valley. It is not anticipated that the May Valley Interceptor will be constructed within the six-year time frame of this plan. As this subbasin develops further, capacity may become a concern in the Summerwind and Stonegate Lift Stations. 5-14 09/21/99 OW SYSTEM ANALYSIS& RESULTS h. NORTH HIGHLAND SUBBASIN ■r The North Highlands Subbasin serves a large area of approximately 527 acres. This basin includes 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 sewers in this subbasin are on the City's list of highest priority sewers for evaluation of replacement. This subbasin does not have any current capacity concerns. The North Highlands Interceptor receives flows, via the Sunset Interceptor, from the Sunset and Stonegate Subbasins. The model shows sufficient capacity in the North Highlands Interceptor. However, at saturation development, the interceptor is close to capacity. The City should continue to monitor the North Highlands Interceptor as the upstream subbasins develop. w. PRESIDENTS PARK SUBBASIN r The Presidents Park Subbasin serves an area of approximately 301 acres. This basin serves residential developments. A major portion of the sanitary sewer system in the Presidents Park Subbasin is over forty years old. Investigation of the old concrete mains finds the lines in moderate shape with some localized structural problems and some inflow and infiltration. The City should provide some spot repairs or rehabilitation to extend the useful life of the entire system. This subbasin should be monitored for scheduling of replacement of the sewers. j. SOUTH HIGHLANDS SUBBASSIN The South Highlands Subbasin serves an area of approximately 84 acres. This basin includes both single family and duplex type residential developments. The Renton Technical College also """ is in this subbasin. A major portion of the sanitary sewer system in the South 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 City should continue monitoring these sewers for need of replacement or rehabilitation. The sewers in this subbasin are on the City's list of highest priority sewers for evaluation of replacement. The City replaced a portion of the sewers along the west side of the basin as interim capacity improvements prior to the installation of the East Renton Interceptor. This subbasin does not have any current capacity concerns. k. BOEING INDUSTRIAL SUBBASIN The 463-acre Boeing Subbasin is located on the south end of Lake Washington. It serves single- family residential east of Interstate 405 and the heavy industrial area north of Downtown. The sewers in this subbasin are approximately thirty years old. There are not any projected capacity concerns within this subbasin. 09/21/99 5-15 «r CHAPTER FIVE The subbasin includes two lift stations: the Boeing Lift Station and the Lake Washington Beach Lift Station. The Boeing Lift Station was replaced in 1997. The pumping of sewage, by the Boeing Lift Station to the North Renton Subbasin, causes concern over capacity in the North Renton Interceptor as discussed in the section on that subbasin. 1. NORTH RENTON SUBBASIN The 251 acre North Renton Subbasin is located between the Cedar River, Interstate 405, N 4th Street, and N 8th Street. This subbasin consists of residential, commercial and heavy industrial land uses. tot Many sections of this subbasin were not modeled due to a lack of physical data. Severe capacity problems, at projected saturation, exist within the North Renton Interceptor along N 6th Street as a direct result of receiving wastewater from the Sunset Interceptor and Boeing Lift Station. This subbasin connects into the KING COUNTY Interceptor at N 6th Street and Logan Avenue N. Records on the sewers in this subbasin are non-existent. Best estimate is that the majority of the pipes in this subbasin are over seventy years old. The City is scheduling to replace these lines in 11r the year 2001. The Wastewater Utility should investigate rerouting the sewers in this subbasin to N 4th Street. The N. 4th Street Interceptor has additional capacity due to the re-route of the King County Trunk to S. 3rd Street in 1996. If the City is able to route the North Renton sewers into the interceptor in N 4th it would reduce the capacity concerns in N 6th Street. 5. 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 4084 acres of this basin. r a. SOUTH RENTON SUBBASIN The 290-acre South Renton Subbasin includes the commercial business district south of the Cedar River and the residential communities located on the Renton Scenic Hill. Currently no lift stations are located in this subbasin. The majority of the sewers in this subbasin are over fifty years old. The City has scheduled the replacement of the sewers between Main Avenue S and Burnett Avenue S for 1998-99. The older sewers on the Renton Scenic Hill are on the City's list of highest priority sewers for evaluation of replacement. b. ROLLING HILLS SUBBASIN The 366-acre Rolling Hills Subbasin serves primarily single-family and multi-family communities. The pipe in this subbasin is fairly new, with the oldest being about twenty years old. There are not any structural or capacity problems associated with this subbasin. 5-16 09/21/99 rrr SYSTEM ANALYSIS& RESULTS c. TALBOT HILL SUBBASIN OW The 520-acre Talbot Hills Subbasin serves primarily single-family and multi-family communities. A large portion of the pipe in this basin is about forty years old. These older pipes are on the City's list of highest priority sewers for evaluation of replacement. e• d. PANTHER CREEK SUBBASIN r" The Panther Creek Subbasin is 1,053 acres in size. The portion of the subbasin within the City's sewer service area serves primarily residential uses, including both single-family and multi- family developments, and the commercial developments at and around Valley General Hospital. The majority of the subbasin connects into the KING COUNTY Interceptor at S 37th, near the Valley Freeway. The sewers in this subbasin are in good condition, with the majority being about 30 years old. two The Talbot Road Interceptor is the only line that has capacity concerns in this subbasin. This interceptor, which serves a majority of the Panther Creek Subbasin, may be undersized to service this area. As the subbasin develops, the City should continue to monitor this interceptor for capacity and need to upsize. iso The Panther Creek Subbasin includes the Talbot Crest Lift Station. This station is the only pneumatic ejector station in the City. In 1998, the Wastewater Utility is planning to evaluate refurbishing or replacing this station, in 1999, to improve reliability and make it consistent with the remaining stations in the City. e. SPRINGBROOK SUBBASIN This is a large subbasin with only 201 acres of it in Renton's Sewer Service Area. Renton obtained the sewer mains that allow us to serve the area in the 1991 interlocal agreement with Soos Creek Water and Sewer District. This agreement defines service area boundaries and we, results in joint use of the Springbrook Interceptor which serves the Springbrook Subbasin. Renton is responsible for the portion of the Interceptor within City Limits and Soos Creek is responsible for the portion of the Interceptor outside of the City There are not any existing capacity or structural concerns in this subbasin. As the subbasin develops, capacity constraints in the Springbrook interceptor may become a concern. The 1991 OW agreement identifies capacity limits for both Renton and Soos Creek. Based upon these limits, the agency who is over capacity is responsible for improvements to provide the additional capacity. f. RENTON INDUSTRIAL SUBBASIN The 1,653-acre 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, as part of the 1995 Comprehensive Plan Update, areas previously zoned IMP 09/21/99 5-17 CHAPTER FIVE light industrial have been changed to commercial zones. This zoning change may lead to 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. 6. 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 SW Sunset Boulevard. For the purposes of this study,the City is looking at all or parts of four subbasins that encompass approximately 968 acres. These subbasins consist of primarily single-family, multi-family, and commercial land uses. This basin primarily transports wastewater east into the KING COUNTY East Side Interceptor. This study is looking at four subbasins: the West Hill Subbasin, North Earlington Subbasin, South Earlington Subbasin, and the West Renton Subbasin. Bryn Mawr-Lakeridge Water and Sewer District and Skyway Water and Sewer District also provide sewer service within the Lake Washington West Basin. a. WEST HILL SUBBASIN The 321-acre West Hill Subbasin serves the residential communities on the West Hill north of rr Renton Avenue South. The subbasin includes the Airport Lift Station located at the City of Renton Airport. Potential for additional development within the city limits in this subbasin is minimal. Some areas were not modeled 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. b. SOUTH EARLINGTON SUBBASIN The South Earlington Subbasin is a moderate sized basin that is bounded on the south by SW Sunset Boulevard and on the north by the Seattle Pipeline Right-of-Way at S 134th Street. For this study we will look at approximately 234 acres of this subbasin. The majority of the sewers in this subbasin are almost fifty years old. Renton's Inflow and Infiltration Study (Brown and Caldwell, March 1995) identifies this subbasin as the worst for I & I. This high I & I is a major contributor to the projected downstream capacity concerns. These older sewers are on the City's list of highest priority sewers for evaluation of replacement. They need to be evaluated for structural condition and for the ability to reduce the need for downstream replacements due to capacity constraints. c. WEST RENTON SUBBASIN The West Renton subbasin serves the residential community and the commercial district between Rainier Avenue South, Burnett Avenue South, South 3rd Street and the Airport. This subbasin is approximately 181 acres. The sewer model shows that, under current system conditions, there will very likely be capacity problems in the West Renton Interceptor, at saturation development. These capacity problems would be primarily a result of the high rate of inflow and infiltration in the upstream subbasin(s). 5-18 09/21/99 4111/ SYSTEM ANALYSIS& RESULTS The existing interceptor is approximately 3,700 lineal feet of 12-inch and 15-inch sanitary sewer. If the sewers in the South Earlington Subbasin are replaced, the flows in the West Renton Interceptor, at saturation development, should be around capacity and some minor improvements may be necessary. If the sewers in the South Earlington Subbasin are not replaced, the City should examine the possibility of increasing the size of this interceptor or providing additional interceptors in this basin. d. NORTH EARLINGTON SUBBASIN The North Earlington Subbasin is a moderate sized basin that is bounded on the south by the Seattle Pipeline Right-of-Way at S 134th Street and on the north by the Renton Avenue corridor. °11° For this study we will look at approximately 232 acres of this subbasin. This Basin includes the Earlington Lift Station. This lift station is approximately 30 years old. Its primary function is to provide service to the Black River High School. illP The majority of the study area in this subbasin is unserved at this time. Service of this subbasin would require construction of an interceptor (i.e. Renton Avenue Interceptor) or improvements +11P to the Earlington Lift Station. 7. DUWAMISH ESTUARY BASIN tam The Duwamish Estuary Basin is located in the western portion of the City and includes the immediate area surrounding KING COUNTY's EDRP Facility. This basin also includes a portion of the Skyway Water and Sewer District. This study is looking at approximately 713 acres within this basin. The valley floor primarily consists of light industrial and commercial land uses. The hillside consists of multi- family and single-family residential developments. This basin includes the Earlington Woods and Duwamish Estuary Subbasins. a. EARLINGTON WOODS SUBBASIN "" The 76-acre Earlington Woods Subbasin serves the residential area along the south side of SW Sunset Boulevard and the commercial uses in Renton Center. The sewers in this subbasin are newer, with the oldest only about fifteen years old. There are not any structural or capacity "" concerns in this subbasin. b. DUWAMISH ESTUARY SUBBASIN The 635-acre Duwamish Estuary Subbasin includes the industrial and commercial uses between SW Grady Way and SW Sunset Boulevard. A large percentage of the sewers in this subbasin are «rr over thirty years old. There are not any structural or capacity concerns in this subbasin. D. LIFT STATIONS r 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 yr 09/21/99 5-19 .re a CHAPTER FIVE established to ensure protection of the environment and property through design and operation of reliable sewage lift stations. The City of Renton has 21 sewage lift stations, which are shown and inventoried in FIGURE 4. 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-2. 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. All of Renton's active lift stations are controlled by a digital based Remote Telemetry Unit (RTU) that is connected, via radio, to a Master Telemetry Unit (MTU.) at the City Maintenance Shops. The RTU's allow custom control to match the characteristics of each station. The telemetry system also provides alarm capability for the lift stations. Alarms would be activated for power failure, pump failure, high wetwell level, low wetwell level as well as other items of concern. The Alarm system is connected to an auto-dialer to notify staff, by pager, during off-hours. 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. " 2. LIFT STATION NO.2 -AZALEA LANE ,err 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 Azalea Lane Lift Station will be removed following the completion of wr the East Kennydale Interceptor in 1998-99. 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 OW this facility is through the pole yard and is made difficult during rainy periods. Obtaining replacement parts for this station is a problem. Due to recent re-zoning of this property and development interest for a mixed use development (commercial & multi-family), this station needs to be evaluated for either oiso rehabilitation or replacement. 5-20 09/21/99 00 rib ,,,,u SYSTEM ANALYSIS& RESULTS 4. LIFT STATION NO. 4 - BOEING The Boeing Lift Station is located on the northeast corner of N. 8th Street and Park Avenue N. The forcemain was replaced in 1995 as part of the Park Avenue Street Project. At that time, the forcemain 101was relocated to N 8th Street where it connects to the gravity system at N 8th Street and Garden Avenue N. The Boeing Lift Station was replaced, in 1996, with a new submersible duplex lift station using the existing wetwell. The existing wetwell was rehabilitated as part of the replacement. When the station was replaced, the City installed a flow meter to track usage for billing purposes. VW 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 serves the area between the Maple Valley Highway and the Cedar River, east of the Stoneway concrete facilities. The lift station was replaced, in 1994, with a submersible pump duplex station in a new wetwell. The forcemain was also replaced at that time. so so WO VW rr 1110 09/21/99 5-21 n N N TABLE V-3:DISCHARGE PERMITS AND DISCHARGE AUTHORIZATIONS IN THE CITY OF RENTON PERMIT PERMIT '.z7 NUMBER COMPANY NAME ADDRESS EXPIRATION INDUSTRIAL CATAGORY 6--. tzl Facilities With Waste Discharge Permits 7630 Boeing Commercial Airplane Renton 8th and Logan Avenue North 31-Dec-02 433 7508 Boeing Electronics Company Renton 600 SW 39th Street 9-Mar-02 433 PSNS 7645 G&K Services 1001 SW 34th Street 30-Mar-99 Industrial Laundry 7627 Kenworth Truck Company 1601 North 8th Street 7-May-98 433 PSNS 7685 Puget Sound Energy(Golder Assoc.) 915 S Grady Way 4-Sep-02 Contaminated Utility Vault Facilities With Waste Discharge Authorization 227 Acme Poultry-Renton 600 SW 7th Street 23-May-00 Poultry Processing 560 Circle K Company(BP Branded Retail Facility 11053) 2022 South Puget Drive 17-Jun-02 - Groundwater Remediation-Gasoline 606 Exxon Stn#7-6929(EA Engineering,Science&Technology) 3100 Benson Road S(Soos Creek Sewer) 20-Mar-03 Soil Remediation-Petroleum 430 Group Health Cooperative-DSSF Facility 801 SW 16th Street 18-Mar-00 Groundwater Remediation-Gasoline 123 Jefferson Smurfit Corporation 601 Monster Road SW 7-Jul-02 Carton Printing 508 K&N Meats-Renton 600 Powell Avenue SW 12-May-00 Meat Processing 610 King County-Bryn Mawr Siphon Construction Project N 6th Street&Burnett 17-Mar-03 Construction Dewatering 408 King County Public Works-Road Division-Renton 155 Monroe Avenue NE 8-Jan-03 Decant Station 359 King County Solid Waste-Renton Transfer Station 3021 NE 4th Street 11-Apr-02 Solid Waste Transfer Station 264 Mobil Oil Corporation(Lind Avenue SW) 2423 Lind Avenue SW 2-Feb-00 Groundwater Remediation-Gasoline 292 PACCAR,Incorporated(Hart Crowser) 1400 N 4th Street 2-Jan-00 Construction Dewatering 367 Renton Radiator 3217 SE 6th Street 1-May-02 Radiator Repair 388 Service Linen Supply 903 S 4th Street 1-Sep-02 1 Linen Cleaning 591 Stoneway Concrete-Black River Quarry Site 6900 S Beacon Coal Mine Road T 1-Nov-98 Portable Concrete Batch Plant 231 Stoneway Concrete-Renton 1915 Maple Valley Highway 11-May-00 Ready Mix Batch Plant 460 Texaco Environmental Services-Bronson Way 1408 N Bronson Way 5-May-99 , Groundwater Remediation-Gasoline 501 The Southland Corporation 1520 Duvall Avenue NE 21-Mar-00 Groundwater Remediation-Gasoline 523 Tosco 621 Rainier Avenue S 26-Oct-00 Groundwtr Remediation-Petro Hydrocarbons 261 Tosco Northwest Company 2423 Lind Avenue SW 12-Jan-01 Contaminated Storm Water Treatment c N 19/99/10:42 AM SYSTEM ANALYSIS& RESULTS 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 r priming system. This facility serves the Denny's restaurant, is in good condition and has proven to be reliable. The lift station does experience some problems due to grease discharges from the restaurant and flooding during peak storm events. Replacement parts for the USEMCO pumps are hard to find. 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. This lift station will be taken off-line and removed when the Honey Creek interceptor and May Valley Interceptor are completed. rr 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 ter 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 The installation of the Sunset Interceptor has taken the capacity pressure off the Devil's Elbow Lift Station. The City is in the process of designing a replacement For the Devil's Elbow Station. The new duplex station will utilize wet well mounted submersible pumps and be constructed to minimize vandalism. A new force main will be constructed to connect to the end of the East Kennydale interceptor at NE 24th Street. This work is anticipated to be completed in 1999. ow 8. LIFT STATION NO. 8- EARLINGTON SCHOOL "w 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 Black River High School. The lift station is in good condition, ow 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. The electrical equipment needs some rehabilitation and improvements. 09/21/99 5-23 err Ilei CHAPTER FIVE 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 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 a 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. The force main associated with this a station is long and has an excessively high head. This lift station may be taken off-line and removed after the development of the Parker property and completion of the Falcon Ridge Interceptor. Wastewater would then flow by gravity directly to KING COUNTY's Cedar River Interceptor. a 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 the 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. Both pumps are operational but the station should not be considered reliable enough for anything but emergency usage. The City is planning to abandon this a station once the Devil's Elbow Lift Station is replaced. 13. LIFT STATION NO. 13 - 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. I 5-24 09/21/99 imp SYSTEM ANALYSIS& RESULTS 14. LIFT STATION NO. 14- 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. 15. LIFT STATION NO. 15 - 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 serves lakefront properties west of the railroad tracks in the Kennydale area. The Lake Washington No. 2 Lift Station was replaced in 1994. The new station is a submersible pump duplex +r+ station in a rehabilitated wetwell. Improvements to access and site stabilization were also done as part of the replacement project. The forcemain was not replaced at that time. 16. LIFT STATION NO. 16- 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. r 17. LIFT STATION NO. 17- 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 near where May Creek enters the lake. The lift station is in fair 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. This station will be evaluated at the same time as Baxter Lift Station. 18. LIFT STATION NO. 18 - STONEGATE The Stonegate Lift Station is located on NE 26th St.just west of 148th Avenue SE. The station is on the north side of the road in an open space tract. This facility is a fiberglass enclosed, wet well mounted duplex lift station with a duplex vacuum priming system. The facility serves the entire plat of Stonegate. This station is dependent on the Summer Wind Lift Station to relay the sewage from this subbasin to the gravity system. Preliminary analysis shows that the pumps can handle the flows produced by the full development of the subbasin. Additional development storage capacity at this station may be required for future development. 09/21/99 5-25 a CHAPTER FIVE 19. LIFT STATION NO. 19 - SUMMER WIND a 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 new Stonegate Lift Station pumps into the Summer Wind Lift Station. It is anticipated that the Stonegate pumps would regulate the additional flows. The Summer Wind station has the capability of handling its own service area as well as the effluent pumped by the current Stonegate pumps. 20. LIFT STATION NO. 20 - 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 equipment in the station is old and obsolete. It is also the only pneumatic ejector station in the City. The City should consider rebuilding this station to make it consistent with the rest of the stations. The lift station has a tendency to collect condensation in the air chamber which must be removed periodically. 21. LIFT STATION NO. 21 - WESTVIEW The Westview Lift Station is located on the west side of Monterey Avenue NE. This facility is a duplex submersible lift station designed to serve the twelve lot Westview Plat. Unless a gravity line is installed from Park Drive, this station should be considered a permanent station. a a a i 5-26 09/21/99 SYSTEM ANALYSIS&RESULTS 22. PRIVATE LIFT STATIONS •r 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 •East Perimeter Road (north of Logan) Boeing Company •West Perimeter Road and South Perimeter Road Airport Utility •Aberdeen Avenue NE(1000 block) Renton Ridge Apts. rf°` •148th Avenue SE opposite North 10th (Apollo School) Issaquah School Dist. •NE 29th Street(Near Kennewick PI) Canyon Oaks Condos •Puget Drive near Rolling Hills Private Development •Tukwila Lift Station near KING COUNTY EDRP City of Tukwila ••r •1901 SW 19th Street Hunter Douglas •Lincoln Ave NE and NE 40th St. Williamsburgh Condominiums •• •SW Grady Way- west of Oakesdale (Uresco) King Co. (Metro) New private lift stations must meet city standards E. TELEMETRY AND CONTROL SYSTEM In 1996 the City replaced the existing telemetry system. Each lift station is controlled by a Remote Telemetry Unit(RTU) to allow custom control to match the characteristics of each individual lift station. The RTU's are programmable controllers programmed in basic programming language. The RTU monitors the control at the lift station and provides secure and accurate information about the operating conditions. A Master Telemetry Unit (MTU) polls each lift station RTU and feeds the data to the Master Computer via Modbus communication link. The new system is digital, signal-based, using a high security, binary coded decimal for telemetry transmission. The system runs on IBM compatible computers. The system uses radio transmission for communication. The telemetry system information is managed from a Master computer. Wonderware Intouch Person- Machine Interface software is used at the master computer for displaying the data graphically on screen. The master computer displays wet well sewage levels and time to overflow data for all of the City's •` active lift stations. This information can be used to help manage the lift stations in a Citywide power interruption that could occur after a natural catastrophe. The telemetry system can be monitored and controlled by a remote computer link using specialized software. Control of the facilities is accomplished in a distributed format, wherein the master computer provides pump run set points that are based on optimal, pump operating conditions, and also locks out various lift IIIW stations during high-level alarms from various downstream lift stations. All other control is initiated 09/21/99 5-27 r CHAPTER FIVE from the RTU, including pump start/stop from the level transducer, back-up pump control from the float switches and station alarms. The system uses strain gauge, level transducers that are suspended in the wet well for primary pump control and uses float switches for back-up pump control in the event of transducer failure. Pump discharge flow rates are mathematically synthesized by measuring the time it takes to empty a known volume of the wet well. The engineering and system status information that is presented at the City Shops is available in real time format at City Hall using a modem. This allows the engineering and planning staff access to system information without disrupting the maintenance staff. ii The computer and data storage system is compatible with the water data logger to provide redundant data storage and to provide hot standby fail over controllers. Operating data from each lift station is stored on the master computer for record and later use. This information is used in a comprehensive maintenance program to help eliminate costly station down time that can often cause damage to adjacent property owners and the environment. The control algorithms located on the Master Computer and the RTU's can be used as trend analysis to detect possible problems earlier. The master telemetry unit, located at the City Shop, includes an intelligent telephone dialer alarm systems, so that critical alarms can be relayed to on-duty maintenance personnel, even during a telemetry system failure. 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. I. DOMESTIC WASTEWATER to 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 can. 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 rr contaminant concentrations. 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-3. 5-28 09/21/99 err SYSTEM ANALYSIS& RESULTS If discharge of an industrial waste to the sanitary sewer system creates problems, then pretreatment of the „i,,,, industrial waste should be considered. Several federal, state, and local regulations govern the pretreatment of industrial waste. Several industries within the City have obtained National Pollution Discharge Elimination Systems OW (NPDES) permits. 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. 3. WASTEWATER QUALITY PROBLEMS ago 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 IWO 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. r 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 failure. Sanitary sewer pipes are most susceptible to this type of corrosion in their crowns because that is where most condensation occurs. Aeration, periodic cleaning, and use of non-corrosive pipe materials can control effects of hydrogen sulfide. 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 WIN most effective method of mitigating corrosion by hydrogen sulfide is through the use of non-corrosive 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 110 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. WNW Excessive infiltration and inflow (I & I) will tend to lower the BOD. This will tend to reduce the production of hydrogen sulfide and the concentration of contaminants in the wastewater. As the City .�. works to reduce I & I, there may be more impact by contaminants and hydrogen sulfide. The City may have to increase efforts to reduce hydrogen sulfide and be more aware of potential contaminants. 09/21/99 5-29 C) o 'b tzi TABLE V-2: LIFT STATION INVENTORY SUMMARY ti FM Pump Emerg. til No.of Size Speed Capacity T.D.H. Power No. Lift Station Name Location Pumps In. H.P. Phase RPMs GPM Ft Station Type Connect Telemetry Voltage 1 AIRPORT 500 West Permeter Road 2 4 7.5 3 1750 100 54 WW MTD Yes Yes 230/460 2 AZALEA LANE 2310 Aberdeen Avenue NE 2 6 7.51 3 1800 125 i 44 WW MTD Yes Yes 120/208 3 BAXTER 5015 Lake Washington Blvd N 2 8 3 3 865 100 15 WW MTD Yes L Yes 230/460 Baxter Pole Yard 4 BOEING 800 Park Avenue N 2 6 3 3 860 460 20 SUBMERS.i Yes Yes 230/460 5'COTTONWOOD 2003 Maple Valley Highway 2 6 5 3 1750 230 32 SUBMERS. Yes 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 DEVILS ELBOW 3001 NE 27th Street 2 8 40 3 1760 400 157 WW MTD Yes Yes 230/460 a o L 8 EARLINGTON 8055 S Langston Road 2 6 5 L 3 860 150 30 WW/DW L No Yes 230/460 9 EAST VALLEY 3400 East Valley Road 2 8 5 3 1150 350 22 WW/DW Yes Yes 240/120 10 FALCON RIDGE 2471 SE 8th Street 2 4 15 ^ 3 1800 100 101 WW MTD * Yes Yes 230/460 IIIHIGHGATE 1733 NE 20th Street 2 4 ' 3 1 1170 100 35 WW MTD I Yes Yes 240/120 12?HONEY CREEK 3501 NE 17th Place 2 4 7.5 1 1750 100 58 WW MTD No Yes 240/120 13 LAKE WASHINGTON BEACH1201 Lake Washington Blvd 2 4 3 3 900 125 25 WW/DW Yes Yes 240/120 Coulon Park Parking Lot 14 LAKE WASHINGTON FLUSH 2727 Mountain View Avenue N 1 8 1.5 L 3 1150 400 6.5 SUBMERS. Yes Yes 240/120 North End of Coulon Park 15LAKE WASHINGTON NO.2 3901 Lake Washington Blvd N 2 4 7.51 3 1750 385 35 SUBMERS. Yes Yes 230/460 16 LIND AVE. 1801 Lind Avenue S 3 ' 8 5 3 865 780 13 WW/DW Yes Yes 230/460 17 MISTY COVE 5025 Ripley Lane N 2 4 2 1 1150 175 18 WW MTD Yes Yes 240/120 18 STONEGATE 5610 NE 26th Street 2 4 20 3 1800 140 125 WW MTD , Yes Yes 230/460 19 SUMMERWIND 5214 NE 23rd Court 2 6 25 L 3 1800 375 133 WW MTD Yes Yes 230/460 20 TALBOT CREST 2515 Talbot Crest Drive S 2 4 5 L 3 1750 50 96.6 PE Yes Yes 240/120 ............... 21*WESTVIEW 1149 Monterey Avenue NE 2 3 2 * 1 3450 SUB/GRIND Yes Yes 240/120 so N I:. t . I. .t L li E I t t. t t i i t ii, . 1 F i i Ike III 6110 •,. t III , ,.. L - CHAPTER VI 44'' 4.444'.444:4.° .."-- ill RECOMMENDED ii. IMPROVEMENTS its ..c.N. PLA b. • lio 4 . °,Th '„• "44,4115V _-:- _ 9/.4.4...... :-..... od d- .1 I 0.0.......--. . 441/1"....44... ,... MAN%--- ' ,. 0 • -,-- 4C .1 – .....--- aill taaB r N -4 0 0 41 D / N 6. ..... e n ...., ..4.4.....—• k, ".'9.---.1' OPIN •L.A.^...--* ....•;'. ow._ 1,-. -.=-'" • ...%........ --...-- am —.----- ....,_ ...... --"------------- 4i "o— ak. IP eis be +rr CHAPTER VI RECOMMENDED IMPROVEMENTS am A. INTRODUCTION err This chapter presents the proposed improvements to the Renton sewer system that are necessary to correct existing deficiencies, replace existing deteriorated facilities 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 wig facilities that are at risk and planning corrective measures must continue. B. CIP RANKINGS IWO 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, and Environmental Protection. Each category was further divided into four or more kinds of improvements or standards. Each of these sub-categorize 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 sub-category, 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 4n 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. The results of the systematic ranking are presented in TABLE VI-1. r WO OW OW 05/17/99 6-1 trip • CHAPTER SIX or TABLE VI-1:RANKING SUMMARY OF PROPOSED IMPROVEMENTS killi PROJECT PROPOSED SUBSTANDARD SYSTEM ENVIRONMENTAL TOTAL NUMBER CAPITAL IMPROVEMENTS FACILITIES EFFICIENCY PROTECTION RANKING SYSTEM WIDE - - -- - WI 1.01 Miscellaneous Sewer Replacement 6 1 4.5 11.5 1.02 Lift Station Electrical Rehabilitation 6 2 0 8 1.03 Sanitary Sewer Grouting and Rehabilitation 3 2 2.5 7.5 illi - -- ------------------- - 1.04 GIS Database and Conversion 1 2 0 3 1.05 Long-Range Wastewater Management Plan 0 1 0 1 WEST CEDAR RIVER BASIN iiii 2.01 Windsor Hill Sewer Replacement 3 2 2.5 7.5 2.02 Falcon Ridge Lift Station Elimination 1 2 2 5 2.03 Cottonwood Lift Station Rehabilitation 2 1 0 3 - -- ■iii 2.04 Falcon Ridge Lift Station Rehabilitation 2 1 0 3 EAST CEDAR RIVER BASIN _ 3.01 East Cedar River Collection System 3 0 5 8 3.02 Central Plateau Interceptor 3 0 5 8 ari 3.03 East Plateau Interceptor 3 0 5 8 LAKE WASHINGTON EAST BASIN 4.01 North Highlands Sewer Replacement 4 2 3 9 viiii 4.02 Ridgecrest Sewer Replacement 6 1 2 9 4.03 South Highlands Sewer Replacement 4 2 3 9 4.04 North Renton Sewer Replacement Phase I 4 2 2 8 4.05 Kennydale Lakefront Sewer Replacement 4 1 3 8 ii 4.06 Presidents Park Sewer Replacement Ph I 4 2 2 8 4.07 Highgate Lift Station Elimination 3 1 3 7 iii 4.08 North Renton Sewer Replacement Phase II 3 2 2 7 4.09 Honeydew Sewer Replacement 2 1 3 6 4.10 Aberdeen Ave NE Sewer Main Ext. (12th to 24th) 0 0 6 6 art 4.11 Duvall Ave NE Sewer Main Extension 0 0 6 6 4.12 Union Ave NE Sewer Main Extension 0 0 6 6 4.13 Sierra Heights Collection Sewers Phase II 1 0 5 6j 4.14 Presidents Park Sewer Replacement Ph II 2 1 2 5 4.15 Sunset NE Sewer Replacement(N 4th to Park PI) 2 1 2.5 5.5 4.16 North Renton Interceptor Replacement 4 0 1 5 rrr 4.17 Honey Creek Interceptor Phase IV 2 1 1 4 4.18 Devil's Elbow Lift Station Elimination 2 2 1 5 4.19 Lake Washington Blvd. Sewer(2900 Block) 3 0 0 3to 4.20 Summerwind Lift Station Rehabilitation 1 1 0 2 4.21 Lake Washington Beach Lift Station Rehabilitation 2 1 0 3 4.22 Lake Washington No 2 Lift Station Rehabilitation 2 1 0 3 sio II II 6-2 05/17/99 Oil OW W RECOMMENDED IMPROVEMENTS ow TABLE VI-1:RANKING SUMMARY OF PROPOSED IMPROVEMENTS PROJECT PROPOSED SUBSTANDARD SYSTEM ENVIRONMENTAL TOTAL NUMBER CAPITAL IMPROVEMENTS FACILITIES EFFICIENCY PROTECTION RANKING ,_ BLACK RIVER BASIN 5.01 Oakesdale Avenue Connections 0 0 0 0 5.02 South Renton Sewer Replacement Phase II 5 2 2 9 6105.03 Renton Hill Sewer Replacement 4 2 2 8 5.04 Talbot Hill Sewer Replacement 3 2 2 7 5.05 Talbot Crest Lift Station Replacement 3 2 1 6 ow5.06 Thunder Hill Interceptor Replacement 4 1 1 6 5.07 East Valley Lift Station Rehabilitation 2 1 0 . 3 5.08 Benson Road Interceptor 1 1 1 3 5.09 SW 34th Street Interceptor Replacement 2 0 0 2 ow 5.10 Talbot Road Interceptor Replacement 2 0 0 2 5.11 Lind Avenue Lift Station Rehabilitation 2 1 0 3 LAKE WASHINGTON WEST BASIN so 6.01 CBD Sewer Replacement Phase IV 5 2 2 9 6.02 Earlington Lift Station Elimination 5 2 2 9 6.03 Earlington Lift Station Replacement 5 . 2 2 9 OW 6.04 Earlington Hill Sewer Replacement 4 2 2 8 6.05 West Hill Sewer Replacement 3 2 2 7 6.06 Renton Avenue Interceptor 2 1 3 6 or 6.07 North Earlington Collection System 1 0 5 6 6.08 Airport Lift Station Rehabilitation 2 2 0 4 MAY VALLEY BASIN OW 8.01 Misty Cove/Baxter Lift Station Replacement 4 2 2 8 8.02 Denny's Lift Station Rehabilitation 2 1 1 4 8.03 May Valley Interceptor Phase II 2 1 1 4 ow ow +rr or ow ow ow 05/17/99 6-3 nwr a CHAPTER SIX 1. SUBSTANDARD FACILITY r 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: a POINTS: 1-2 Reduces or eliminates hydraulic capacity problems. 1-2 Replaces a deteriorating facility or corrects a structural problem. it 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, tui 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. rr 1-2 Involves the elimination of a lift station. ou 1-2 Reduces infiltration and inflow. 1-2 Improves understanding and planning of sewer system. Maximum Number of Points: 8 ea a a a a a 6-4 05/17/99 a +rr "` RECOMMENDED IMPROVEMENTS 3. ENVIRONMENTAL PROTECTION WIMP 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: r 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). WIMP 2 Helps protect Zone 1 of Aquifer Protection Area. 1 Helps protect Zone 2 of Aquifer Protection Area. IMO Maximum Number of Points:8 air WIMP WIrr OW WIN WIMP WIMP 05/17/99 6-5 too • CHAPTER SIX TABLE VI-2:PROPOSED IMPROVEMENTS PRIORITY SUMMARY wili PROJECT PROPOSED TOTAL NUMBER CAPITAL IMPROVEMENTS RANKING PRIORITY COMMENTS 1.01 Miscellaneous Sewer Replacement 11.5 A Iii 5.02 South Renton Sewer Replacement Phase II 9 A 6.03 Earlington Lift Station Replacement 9 A Alternate to Projects 6.02&part of Project 6.06 1.02 Lift Station Electrical Rehabilitation 8 A III 4.05 Kennydale Lakefront Sewer Replacement 8 A __ •8.01 Misty Cove/Baxter Lift Station Replacement 8 A 4.07 Highgate Lift Station Elimination 7 A S 5.05 Talbot Crest Lift Station Replacement 6 A 1.04 GIS Database and Conversion 3 A Coordinate with Technical Services 5.01 Oakesdale Avenue Connections 0 A Coordinate with Road Project irYi 4.01 North Highlands Sewer Replacement 9 B 4.02 Ridgecrest Sewer Replacement 9 B 4.03 South Highlands Sewer Replacement 9 B iii 3.01 East Cedar River Collection System 8 B 3.02 Central Plateau Interceptor 8 B 3.03 East Plateau Interceptor 8 B iii 4.06 Presidents Park Sewer Replacement Ph I 8 B 1.03 Sanitary Sewer Grouting and Rehabilitation 7.5 B 2.01 Windsor Hill Sewer Replacement 7.5 B MI 6.06 Renton Avenue Interceptor 6 B 4.19 Lake Washington Blvd.Sewer(2900 Block) 3 B 5.07 East Valley Lift Station Rehabilitation 3 B goo 1.05 Long-Range Wastewater Management Plan 1 B Required to coordinate with DOE and King Co. 6.01 CBD Sewer Replacement Phase IV 9 C 6.02 Earlington Lift Station Elimination 9 C Dependent on Proj.6.06 4.04 North Renton Sewer Replacement Phase I 8 C sii 5.03 Renton Hill Sewer Replacement 8 C 6.04 Earlington Hill Sewer Replacement 8 C 4.08 North Renton Sewer Replacement Phase II 7 C oil 5.04 Talbot Hill Sewer Replacement 7 C 6.07 North Earlington Collection System 6 C 8.02 Denny's Lift Station Rehabilitation 4 C r 2.04 Falcon Ridge Lift Station Rehabilitation 3 • C 6.05 West Hill Sewer Replacement 7 D 4.09 Honeydew Sewer Replacement 6 D IS 4.11 Duvall Ave NE Sewer Main Extension 6 D 4.13 Sierra Heights Collection Sewers Phase II 6 D 5.06 Thunder Hill Interceptor Replacement 6 D Nib 6.08 Airport Lift Station Rehabilitation 4 D 4.21 Lake Washington Beach Lift Station Rehabilitation 3 D 5.11 Lind Avenue Lift Station Rehabilitation 3 D Ili 4.20 Summerwind Lift Station Rehabilitation 2 D irii 6-6 05/17/99 illy +rr vrr RECOMMENDED IMPROVEMENTS TABLE VI-2:PROPOSED IMPROVEMENTS PRIORITY SUMMARY PROJECT PROPOSED TOTAL NUMBER CAPITAL IMPROVEMENTS RANKING PRIORITY COMMENTS 4.10 Aberdeen Ave NE Sewer Main Ext. (12th to 24th) 6 E 4.12 Union Ave NE Sewer Main Extension 6 E 4.15 Sunset NE Sewer Replacement(N 4th to Park PI) 5.5 E 2.02 Falcon Ridge Lift Station Elimination 5 E 4.14 Presidents Park Sewer Replacement Ph II 5 E 4.16 North Renton Interceptor Replacement 5 E wr 2.03 Cottonwood Lift Station Rehabilitation 3 E 4.22 Lake Washington No 2 Lift Station Rehabilitation 3 E 5.08 Benson Road Interceptor 3 E rrr 5.10 Talbot Road Interceptor Replacement 2 E 4.18 Devil's Elbow Lift Station Elimination 5 F Dependent on Proj.8.03&4.17 4.17 Honey Creek Interceptor Phase IV 4 F Dependent on Proj.8.03 8.03 May Valley Interceptor Phase II 4 F 5.09 SW 34th Street Interceptor Replacement 2 F +rr weo OP Ile NMI �rrr +rr rrrr err rw 05/17/99 6-7 w CHAPTER SIX "ti 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 ranking and the project priority. C. CAPITAL IMPROVEMENT DESCRIPTIONS A list of all the proposed capital improvements, organized by drainage basin, follows. A brief description s 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-2). oat • A summary of improvements by project type(TABLE VI-3). • A summary of the estimated project costs and a schedule for implementation. (TABLE VI- 4A&VI-4B). • A summary of funding sources for each proposed improvement(TABLE VI-5A&VI-5B) In addition,the recommended improvements are shown in plan view in FIGURE 8. r 4. ei us 6-8 05/17/99 1 NOV RECOMMENDED IMPROVEMENTS 1. SYSTEM WIDE IMPROVEMENTS Miscellaneous Sewer Projects and Emergency Repairs System Deficiency: This project is to perform small repairs, replacements, or installations of sewers that are not scheduled in the CIP but become a priority due to unexpected problems, failure, or coordination with other projects. Improvement: Identify and perform non-scheduled work as necessary. CIP Project No. 1.01 Cost: $1,500,000 Priority:A Beginning: 1998 Completion: 2018 rr Lift Station Electrical Rehabilitation System Deficiency:Many of our lift stations were built prior to the existing electrical codes. There so are components in these stations that do not meet the new code requirements. Among other code conditions not met, some of our lift stations do not meet requirements for 'lock out / tag out'. These stations present a hazard to the maintenance workers improvement: Bring Lift Stations up to code for electrical requirements. CIP Project No. 1.02 Cost: $25,000 Priority A 3eginning: 1998 Completion: 1998 Sanitary Sewer Grouting and Rehabilitation 2ystem Deficiency: Old sewers contribute to excessive infiltration into the sanitary sewer system. In order to fulfill KING County's requirements for reducing infiltration and inflow(I&I), the City identifies areas of high concentration and grouts or rehabilitates the sewers. If a specific sewer system is replaced,I&I will be reduced and KING County's requirements will be met. If a system is not scheduled for replacement or a replacement is delayed, the City may have to perform grouting or rehabilitation on the mains to meet KING County's requirements. INN Improvement: Grout or rehabilitate existing sewers. CIP Project No. 1.03 Cost: $1,000,000 Priority:D sip Beginning: 2000 Completion: 2019 +r. rrr NW 05/17/99 6-9 .r. CHAPTER SIX firo GIS Database and conversion System Deficiency: The City is creating a computer GIS database of the City to include utility, building, and planning information. The Wastewater Utility needs to convert the sections existing `paper information' to a computerized GIS database. Improvement: Create GIS database for wastewater data. CIP Project No. 1.04 Cost: $120,000 Priority: A Beginning: 1998 Completion: 2010 ow SI so wI a SI SI SI SI so SI SI 6-10 05/17/99 W 11. "" RECOMMENDED IMPROVEMENTS 2. WEST CEDAR RIVER BASIN er Windsor Hill Sewer Replacement sr System Deficiency: These existing sewers are approximately 55 years old. Large portions of the Windsor Hills Sewers are 6" pipes, which does not meet current standard for minimum size for mains. Part of these sewers are within Zone 2 of the Aquifer Protection Area. This project u involves the replacement of approximately 7900 lineal feet of existing 6 inch and 8-inch gravity sewer in the Windsor Hills Neighborhood. esImprovement: Replace or rehabilitate old sewers in conjunction with the reconstruction of the roads in Windsor Hills. >rMP CIP Project No.2.01 Cost: $1,600,000 Priority B Beginning: 1999 Completion: 2002 1 1 m ��'o�'el72 ^/` C �� I FIE 6tn 1 I '\ \1- 41,,, 1 ff ,_ Q i j I 1 NE ow l' \\ si` 6111 St., z� i .a 11 > r� I I a J o 2.01' /�� v NE 5th Ct., I j it; D we 2 ? �o/i' Edmonds r( I I o N.- Ct.Vs. w Z .0.-% Fer le t\ 4tn1 law N 4th JI. r i `�� / _-\ 11= _:�t`�J ,',,,,<i ,y ,IL C m , ,7 I 7 - / / i/ i 1111N LE -N� � II 11 � ES !_ 1 o / / I moi" >1 i Q 1 l ^' —7/ / L--- / a,5 , roc47 0 CA.err ico r— // i /�/ -./ IL NE .r n J \P-V ----____<„,f, � \N-_____, — v�e\�� f WIMP MO WIMP SO 05/17/99 6-11 ear r CHAPTER SIX 'o Falcon Ridge Lift Station Elimination so System Deficiency: This project involves the construction of approximately 2200 lineal feet of 8- inch and 12-inch gravity sewer from the existing lift station to KING County's Cedar River Interceptor. This project will most likely be done in conjunction with the development of the NI property between the lift station and the Cedar River. Improvement: Construct the gravity sewer from the lift station to the King County Interceptor. ori Disassemble and remove the lift station after completion of the gravity sewers in this area. CIP Project No.2.02 Cost: $700,000 Priority F iii Beginning: 2019 Completion: 2020 ,,,,,,S 13:n 71 5 , = ' tH :n" ;t,II i i lY1 I, + �' —, a �lei , --:-' 1,, --1,/ , t P ,Lig , 1 um �� -t i 1i — it eUF �,rilff diIS<LI (El � IL- - -/ `'c--- ,4111.141H=', :iLLI) 4 1 \ 41'.� -c_ SI _ Si if,t ,2 �i , sin -7---ir , BM 4 �� FAL__ LIFT STATION CON RIDGE a � BI, , -----s\-7-44 ._.�f 7 �'Naas --'rte_ MI8h� I .\\',,e a \�, I8h h�� . \`37 E'.I 1t� ,.- 1I_ k I - <IVI I :, //A\� g; ;,,! R a al a a a 6-12 05/17/99 a VW 41" RECOMMENDED IMPROVEMENTS Cottonwood Lift Station Rehabilitation imp System Deficiency: The Cottonwood Lift Station was reconstructed in its entirety in 1994. This is a permanent station. The expected life of a sewage pump station is 25 years. Cottonwood will be r 25 years old in 2019. Renton should plan to rehabilitate the station in 2019. Improvement: Rehabilitate the existing lift station. op CIP Project No. 2.03 Cost: $150,000 Priority F Beginning: 2019 Completion: 2019 ow `,,,, , , Ik 9��i`Tta , )'*.til\Q-y/ /�� _._-- 1E liti ; ___if ;b_ sm,s, 11 LLL��JJJ r I`i�al}t J III `I �" 4': � X11 ( m' ,,_ iL i so S 8 C �� f� COl10NWW� �y� IC s-I .\ '-'n111------��''--��II� 1; 1 --1; -I LIR STATION � `' `^ . "� �` F1�•' J ?Ili 1I Y.US SE>Ih SI T. J I�' � � -- }�,.h� Tl �� I SI L_JI__ llt1. _, �® �" 51h '9 ii�_: 17 sslh 1 EL91R �� woy...1"---:---:_ 111 °i v- hill ----'''----')ti�\ — s Renter Ydlage Fl loe%1;..,_151_...../..} 51CJVVV '''l % T 9 fiiIS Dr Sr C C r 4'' 161,I s! 7 -h ` //) 16�h= k rw� �J,yq,,, 1 . I'(��I� — ,f,&r / SE�('ti�U PI _0 Cy; �'+Sf ��'n f--------\ -_� ��`11 1, II Y'tc I71h Si I� � �r1\s /� i u y�� fQ�,�3$�^9� "1� I 11,1_ 71� yt `c \N//s`-IBU " meg. �o 'F �M ,Q'� 1 I I atIol1;\ \� /� ti^ tiro -_II SW.91hs1��i19;h1�_+,J_� � �,1 \ QI "2/4% \�^ ^I 1 ,-17I \VP(_____:iii. . II 11 �i \� ixis_Ncr 1 ,-; -= lir IIIN VW UN ill W. 05/17/99 6-13 lair CHAPTER SIX ■r Falcon Ridge Lift Station Rehabilitation a System Deficiency: The Falcon Ridge Lift Station was built in 1981. The expected life of a sewage pump station is 25 years. Falcon Ridge will be 25 years old in 2006. Renton should evaluate the need to replace this station in 2006. The Falcon Ridge Lift Station is scheduled for. di elimination in conjunction with the development of the property between the lift station and the. Cedar River.(see project 2.02) Depending on when this property is developed,this project may not be necessary. iiii Improvement: Rehabilitate the existing lift station. a CIP Project No. 2.04 Cost: $150,000 Priority C Beginning: 2006 Completion: 2006 ow * 5,}$n,g 5 1-,/ I L_J 5 Tobin$t C'--'7 _ V'`- I L'I moo) , • -_._----_� I1 iiii 134th L �'� < Ii `� �if �� €II^ SI r =1 it ii, J I I_ 4`)f/€ 4�__L�7LtJL+:; 1� ^QL.L1 � I1 c�ky' I f�a F '-\____:1% z ,\ IILf�L n J ow ST 7th$t h I 1 I�/ ^• lN9n �L ,. 4 . �_ I 1 5_ 1d _ ' p�i. rALcoe eoor I (/ - � ¢� V' �, a I I SW�ct/ i \ \ -_:.-,,,\ \ g�\,� 1rJ IS 'Q 2i ! §) '¢ o 1 ( y\Hall G 1� ` ' , V' k°,se Oil 11,sn si� /�t � --j ` a� j `�i g�-°r'-5 �r`��'Z;� �1'\. 1 --__--. / 1 a'I _J- 1 \�\„,/^\S/ S/ L 51�I_; H 4 �• // 1 /l I ,A / 1 } I ,L_ "E `,I 9/b I/ri l lF/ice I \'''4:''',. ` 7 ~ . ' fj \y 1 ! - $, '2' a,_s,e;n -I ` 3 \ sr ,z'��/� I�`f� o. .F. i^ (/�� \\ iii =_J, SW,9:h St L QS 19th S1 1 \ti1�-;,---i e.1 4\\\'l it v!J� `i^ - �g i r / i r— 1--ter--� � 4aa, __ r.� t-11 ct .9' my a a ea a 6-14 05/17/99 WO MI RECOMMENDED IMPROVEMENTS 3. EAST CEDAR RIVER BASIN No East Cedar River Collection Sewers N System Deficiency: The completion of the East Renton Interceptor in 1994 allows for the extension of collection mains into the East Cedar River Basin. Except for a couple of parcels along the City Limits and a temporary connection to the Maplewood Heights Elementary School, the basin is - unserved. Construction of the collection system will most likely be through Local Improvement District or developer extension. There is approximately 255,000 feet of collection sewer necessary to provide service to this basin. Two interceptor projects providing service to this basin are a described below as projects 3.02 and 3.03. There are also some facilities proposed in the basin that, while acting as local collector facilities, may need to be larger for conveyance purposes. The City typically participates in the `oversizing' costs of these lines. sig Improvement: Install collection system in the East Cedar River Basin. CIP Number: 3.01 Cost: $34,000,000 Priority:B r. Beginning: 2000 Completion: 2029 til " faf 5,, �4F tug, .,,,„. , III! s'�_� =„,,,„ II ----- � -H--1- 7"-- p il :iritrill-- .\ice n�H---us,-,:. --11,—- ,{ i -- -ll \74 — fril- i'jl .:7,..,...„----.. x ' I Rw <� I� �_, _Y____, I I SII S.�t i°�r LiJ ��1 ci\-A 1r w-.-,<1 .-iwtt-,^ J\ .. ., . �� L _ _ SL E1 1B l fjI7 iL , \nIT-- ., 1� ,ai BVIesii I L --------in -----_-_,==, i_ L�L.J \ I ,f--till$ s"x MI _N---\-----------A:„_,,„ 17�j cis 3 1 tlI�� i[4r-----, '-. liE 6 ril ' 16L ''' 11 ' , Tyr--5 c tii 41 _I ' 7 _ , L 6• I_�\a �JH �' F.. L, ' 'ter-�—==; I� iI », s it L_JL , �' LI ._-a a f) ''ma y , � p , "le 3.01 For proposed system improvements in the East Cedar River Basin, refer to Volume 2 of this Long-Range Wastewater Management Plan. NW till 05/17/99 6-15 No is CHAPTER SIXwig Central Plateau Interceptor en System Deficiency: Service of the Central Plateau Subbasin will require an interceptor or conveyance facility to move the sewage from the subbasin to the King County system. The most logical gravity route would appear to be down the 154' Street corridor, crossing the Elliott Bridge 1111 utilizing the casing that is to be installed by King County as part of the bridge project. For alternative consideration, a pump station that would move the flows to the North Plateau Subbasin could be built in lieu of the Central Plateau Interceptor. The East Renton Interceptor was sized for in this contingency. There is approximately 5000 feet of 18" sewer necessary to provide service to this basin. w Improvement: Install Central Plateau Interceptor. CIP Number: 3.02 Cost: $1,700,000 Priority: B on Beginning: 2004 Completion: 2005 1 I I ',.:11 III II I I §I�,,,,,,!_,,,r,(i �I C=_li L I 1 6I Vj III IISSE134th St. �I! � I36t_ �; l'ILEC_-'_I •-� _ II ill 1 -tSIIS2nd Pl �E I361h 51 ii a�� 'E 7-'S'h� i_.J� ,---i'-----2;,� -�I fi�r—/—/�) SE 1.161h St 1L _ -i1 iI_ 11 ! I �i j S 1 � II 1 Ii SE ISI,•.,P_I -�1 - —=�:_i IS�EIhIL I1 fi f--� E S ; E.I:vly � bi�n Ili ii---- 410 l n` SE iJeln PI f N ii'13B1h PI. Lone J < '''-__JL:I eriiiiiiia �/-/\ SE 139th PI /\\ 139th PI. 1 a ITS 139th P. -' a 4141514 f irr 1 IgIIDtn%.1 'I ill 01 c ^I� I —� SE 142nd St �i —I` 1� I) - 1 p` ,„, 1 <I "' �I 5E 142nd SJ ) 1 tltl 'i ast J SE ,3ed P,, � , f—_ =_-�JL J _ I << � �dr Y 1 sr <Ih c,. lam m. ��s-1�,�\/\ �l�� o,.L 7 t``;E 35Th P� E I • �/ �1✓/. ” r / C�``�-F'°`ALJ lu k� l L z 9y, 1 ,� .....,1 f `/ 49th 5 SE 749th 1 1 �� f '�`RMta_ LI N-41011' `+c .//\3/.02) �� i ` M � NeY HwY L_c, \/ Yn�I `�� VVV��I \ I JE.June 3d_/ /�0,6 1 .`&E Renta \ � -U 5 lr i a a 6-16 05/17/99 a so is RECOMMENDED IMPROVEMENTS East Plateau Interceptor is System Deficiency: Service of the East Plateau Subbasin will require an interceptor or conveyance facility to move the sewage from the subbasin to the King County system. The potential exists for - a gravity route projecting south from 180th Avenue South. This and other gravity routes may be considered. There would be concerns about working in and around the Cedar River to cross to Maple Valley Highway. Alternate methods of pipe installation, such as boring or micro tunneling o may mitigate impacts involved with a river crossing. A gravity alternative would also be dependent upon a facility to move the flows from the discharge point of this trunk at approximately 177`" to the existing King County Cedar River Trunk at 154th. For alternative consideration, a pump station rm that would move the flows to either the North Plateau Subbasin or East Renton Subbasin could be built in lieu of the East Plateau Interceptor. The East Renton Interceptor was sized and the Central Plateau Interceptor is planned for this contingency. There is approximately 3000 feet of 18" sewer ,, necessary to provide service to this basin. Improvement: Install East Plateau Interceptor. WO CIP Number: 3.03 Cost: $1,700,000 Priority: B Beginning: 2018 Completion: 2019 MN �� ✓+! I �,sre Pl __--�I � _"I� i a lau1 s `ll I L__A_, E.7L—_mu )-10---.15, 13 51 J sE IlAlh , , \a C i t%I 1 I � 1�� U61hII51 �SE 1l'.�t -__�� f I �v-"'��'\ J/ <I I Ij lig M I II — --� I--- c�_ _JL_II—_=ig IM°n J� I�Lj�sE_.N_h=� ;$E1t 3E1�p `I it l'r ` T �I-�._ I �� /�(^\\ 7 / `L9;h FI•� TI SI Ui y 1 I E�\ �Csr 1 W q.J I � lig' !l3tn R. I 4 I f I a 5'((,/ �/ t II u—��{(�— I;Lj'i iye;� E7 n(�.li ;II 'j. li u—. u`�iiJ` I.1Th s, Y1 yil lul f Ili jl `II SII <16lI inr' �i_ 1E d_1• p 1,,24n2___3 �r�., ;I I� s1. /I 1 k---__JLC _L nd sl -f ?� /I ,iI / ¢Zt,m a W RItSnFl �—�_ - 1 1 �� i MO \` J i z1IE �, II j 1 �� -- �c,, �I�Fg�2._/f �I�A HiH H1 :II r�uilnr' is yAKE vw Th,.441;.'..v ./ .. 3I .y'FL't1h it �-✓ �(/-NRI '/�q Y H b• /" AH SE JE b.z_Re -- �-- ) r--7 ,ey�Jf/'n�/- Aro i am s �,, uI/ll CvV —� ---z-.S-,, U� 1 Ate,e,. �: us _ s4 ______i Fl s . VW iVW vim 05/17/99 6-17 as iii i CHAPTER SIX 4. LAKE WASHINGTON EAST BASIN a North Highlands Sewer Collection System Replacement System Deficiency: The existing collection system within the North Highland subbasin was siii constructed in the early 1940s and is comprised of 8-inch, 10-inch, and 12-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 56,800 lineal feet of existing gravity oil sewer. Improvement: Replace existing collection system between NE 7th Street, NE 21st Street, ,, Aberdeen Avenue NE,and Queen Avenue NE. CIP Number: 4.01 Cost: $11,400,000 Priority:B tal Beginning: 1999 Completion: 2010 li 1 - t c �,�,�.,,,� t t--. -�hE'2n INE i2_d PL°i I ( c; t �..�.>r uJ �1� d_1 NE 23rd St 1) - � j I I"!;s11 (u� Si ' 21st St 4� `A a \� �J 22n I /� a \ o'Uc IIic I 'N 1j[15-E. �_J Q ( tiEitstP NE 20th t. I�� j�_ NE 20th �� 4 1iF1 aL_ s i (—� �N 21st i \\ Ir' ( y!Tr- il ;/�1. \� L I 1 '_ tlla l ENE=L'LI' 19th \t \ �I II f�I `� 8 zII P.t�7 L�_ '2:2'2-Lc , �I2 `f t31h St i.`�r-_- -M_ Iz ' �� _ s � NE 1 L-11>rj �� - I, o r� NE 77th p a I-- (/__C/ NE'8TH SI ? :it j��. JLJ4thSI Ir.E 17th <'L_ L J rE l7l r271h PIAi th lu oL_ L✓ i Y (- - a l NE 12th St I hl '�'1 , r� ..�;�-� I T� I � ��- 11111 PI ®^ _g. I�`�` C�I U il�. v �� NE Iltn1, ,.. lth _u NL 11th 4 U r.y �?i I 1' �`� �/'P I< r / Ig NE 10th �"% .2'3 INE � �.1�1 �� PI. �5��j� 1 h Cf 1 drlNE 1Ch PI uia I� 1 �E Mth_.-- `4 4Cti�� j 1 NE 10th t� ,F,„`_J,NE, :C'.h St�� NE 10TH St lei . \� N'-'4.\\\ 41f4C-4 -Pi-----1 I 9 �1 �.f uE=_ 9th St3A- E—_ �\2 \ Sl ^ Pi. �, I (o t �Iti - SE 116thm�/WJE 6; p I I NEmoil i I I�� IR �s � INE �� 9th CE I3 � r'l N 6th SL __\< y'I A'i;_ ) I ¢ o IJ$ I t-��O�`SNE 6:h Ct. I I _ f—�- , th r� 1 I j f NE 5ih St. I Ii�f J - ,� !-. e NE Bin St. l!�_ li,.i➢ NE 7th 5l. I✓ '_]�� L lU ' Si. I( � hSE 12Is1 f1 r�!I ®'lih I INE 7th `` %��. i E C CI�h- 6!h Pi�`�� I-l— y\V--' 4.,.n ' q'71 .I ,. II„!:e II v�1-7-0-,-11-- J'^`Ii glIz!i r-----."-, til illi ali a al 6-18 05/17/99 a MO NO RECOMMENDED IMPROVEMENTS Ridgecrest Sewer Replacement WO System Deficiency: The existing collection system within the Ridgecrest Development was constructed in the early 1964 and is comprised of 8-inch concrete sewers which are approaching the mg end of their useful life and need to be replaced before structural failures occur. The majority of the sewer is located in an easement behind the houses. Proper access for maintenance is practically impossible. There is also at least one very large tree intruding on the easement that is imperiling go the sewer. This project involves the replacement of approximately 400 lineal feet of existing gravity sewer. NM Improvement: Replace existing collection system for the Ridgecrest development. CIP Number: 4.02 Cost: $100,000 Priority: B um Beginning: 1999 Completion: 1999 IN Z \ \ I `f J 8\h St. NE 7th St. J �� is \ �� a (_��i�S. �l ----1(-ft ,L, NE VE 7th I x c 1i r— � O N m 1 = c.:,,, \,, u 6 I NE 7th P� y ¢ ib ?-,. / NI 'E 6th 1-' c 0 4-�. 3\ :.47:111, f �c NE 6th �. r�-�i Z. g ENE 6ir ��—j NO —i 1 I1I 4fre I soh Q� � o NE aF1 j 6ih—J I St. "' as,_.:, JIf Q I F E 6 a1 _ / n U F z ✓ � '� ��l m � 'o � U��-1 l NE 5_!h St till St. - E'I NF 5th Ct.: f __ .e Ste- �F.J ;_dmo CL�-lI III6`-� ,, n as vt 8t�5oC �o j v ,y�'I a�/�9L1 , IItlI I I _ sPd'' (Femda!e�N�5 x 1 Atex''' ,1 rg-'� II I I N 4th St. ( r—��_'_� 1 I I( ` "1 \NE 4th StJ 11110 \ it E 4th �i. I I 2 z rip I__, - -/7//// n, ( NE 4th St 1 ,s I jNE 3rd 17 1 JJ NE3t it NE 2nd st r i,/ I i –i v No (2flEJ II SE1st F �_ I SSE 2nd ill IF II Mt NO MI UN 05/17/99 6-19 VIM iiii CHAPTER SIXiiii South Highlands Sewer Collection System Replacement a 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 a involves the replacement of approximately 13,700 lineal feet of existing gravity sewer. Improvement: Replace existing collection system between NE 3rd Street,NE 7th Street, Monroe a Avenue NE,and Sunset Boulevard NE. CIP Number: 4.03 Cost: $2,760,000 Priority: B iiii Beginning: 2000 Completion: 2005 ani \c y\ 1 //��1�, ,t ;J LJ L;t'I Y 9,r� ] 1 �-h ,,,,,,� ''_ \ m// , E-,,,--7,1-11-c, r1 j i l t �hE 9th Ct. 1 C3 N8'hSt. � � \ L \n' _< PI' �' o ¢ Li II / `' I�� _U_L_ 119 -NE 8th Ct I1,.`� —1r.---- � -- �� 1 of o �u� ��< NE 8th St IIF �Iz E I S.. '...„--...:-...---_-7NEj , �� - i NE 8\hi �`' 7th Si ,i� �--,I - . �_ -__-- - z NE ;thJI f .Ig INL 7th Q Q 7 j VE 6th Pt , `II _!1 G\�°o NE6th I I�7.'I> IINE 't^1i=� OA 'l l ; gi I a, a,-P1 NF \ -1 " ' �-. (N�6th i j 11 s: i 1 \\J---) q�e�1l h'�Q� v 'o a �NE <' I 61_1___I� St �1 o�i`�!I ji /! �� 1� ?I _lli �l-_ < ,��1 !i�r�i� 5th St. � / EI r NE Slh Cl, m 1 III��`��I I I 'U JJ ~I N=Jih St pz� �° J Edmonds w� 4.03 I ;fl_, i(— 1 - ', \µ;d"%/ F 2.. . x • 7 it ___;LL N 9tr;St. i r -J✓'_\ I t Ct�) E 4th St. I I --� NE 4th ttt - i N z �� Hill �%,./ // I - zI 1: t LSI`__ U SE i-------- _.. ------1 ¢ NE 3r8 P 1 !! iiiiii Il, 11;10( - rco N j`j� o I i' —_�i l 1li 1, 1 �_�— zl L� NE 2nd st ,ni i---. az n '1 1-- \Nani al mil aii at iiii 6-20 05/17/99 ii es "" RECOMMENDED IMPROVEMENTS North Renton Sewer Replacement.Phase I SUP System Deficiency: The existing gravity sewers are old and deteriorating. Further, these sewers 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. Phase I would be those sewers prioritized as being in the worst condition and needing the most maintenance. This aim project would also evaluate redirecting flow from the 24" interceptor in NE 6th Street to the 24" interceptor in NE 4th Street. ,, Improvement: The replacement of approximately 3,100 lineal feet of existing 8-inch gravity sewer between N 6th Street,N 4th Street,Wells Avenue N,and Park Avenue N. CEP Project No. 4.04 Cost: $620,000 Priority C MIN Beginning: 2001 Completion: 2002 1 r 1 ? I N 8th St. 1 L_ —_ \\ "c LJ L 1I'd i 'I L�✓ i Ft�— I zl II o LL 1pirr, . " 1 \ MJ '-' Y ,i;--' h Q I is' \ I I \ 1d.•1 / E 64 St. - N 5th St. 9 � i�`-.� 5!a I1 1 1 c d I i ;}� I 40* C•C;-,:.---2\L.i�Pdnnr�s �; w mf 7 • ' /1 1I I I � I N 4th St._ /�/ ( ' _ '-'1'----7'-..._,J-`� I ��, / "�"� I I rEl i v .__, I T II \ I + , r r� }ti > 5` it Airport Wa _ — L�Tip L _TL- / \1_3tJ Y �/ E� r°1"--211—i' obi°S F-_ J r--, ._-. `— � I n,� ria v c ii .) , si j 1 ow mi ON al 05/17/99 6-21 a CHAPTER SIX a Kennydale Lakefront Sewer System Improvements c 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 threat to both the environment and the property owners adjacent to this system if it is not maintainable. A study would examine and evaluate alternatives to improve the operation of this sewer system and the improvements would be constructed. iiiii,,, Improvement: Examine and evaluate alternatives for improving system operation in this area and make the improvements. CIP Project No.4.05 Cost: $1,575,000 Priority C Beginning: 1998 Completion: 2001 tin Oil I I` 4 ' '',E),,,,,,,1( °- ;E lams / rJ=(f � sE 7nh al. _'� �/W AE ' r Ir''—W_ I — f _/�-. Dtr� Iib I I I , fiC!h __ � I_S_60th S L SE --- 1------j—T-7,6—W> - i� iii W> a iI (IL :E 431n�i ,^- �I �_ „ a IV \if �I qqN aom Sl _�'I IJ7 �I 4 ANE 401h St m c i I I I Y / q 1 i� � u�\-i1 � i� 3os l , ,I ; \�,, `,,\ / / N]6th St jnj ULC , 1/ SE 6/�' 1 1�1N36tl I ,__3'Z.1 J SE 661E St I �� lis. JL. 4th5t7 r1. \ / I� SE 66!h a/ E- I J� S '711----1l N 33rd Pi Y Ijn < NE 37rd S; _ I SE 91st SI N 32nd Stj SE Nem,I�N 32ntl St I !r- r-11-- / �ia7wl --1NYRE 3�st s: _NJ612L1� N?0 h StSt ` — - ,�. e�1Na01N61 e tW V.� N 29th SI - � P �� --\\--':----- ---- _` 7 jl i N 26th St —In SI \.',10,...17_, ' 95th Woy "' � ��I NE 271h St. �-,-,\., 4SHINGTON "76th 6t < n i—u I� F a a a WI 6-22 05/17/99 l MS W. RECOMMENDED IMPROVEMENTS Presidents Park Sewer Replacement Phase I ow System Deficiency: The existing collection system within the Westerly Portion of the Presidents Park subbasin was constructed in the early 1940s 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 the replacement of approximately 10,000 lineal feet of existing gravity sewer. W Improvement: Replace existing collection system between NE 6th Street,NE 10th Street,Monroe Avenue NE,and Harrington Avenue NE. r CIP Project No.4.06 Cost: $2,000,000 Priority B Beginning:2005 Completion: 2008 MO JLI iI i; Jr 1; �� -, z ;, '''-'' '--------__1-5�„ i I NE 12th St. 11 / vI I=I I � JL lir �� w �� _� � �_ a NE t2th St z ,C-- -.: a I o c-i 1i`,lh ?i.J[-----II P�gih 31� �� 'J Jl1 o fl S y� 1 1I, 3' o o ,' 11 ILNE IitlJo,. , 11tho NEx c"� cy ,i i 1 ' SIt r— � Jl_ � J 3 I ,p '112 ' i �; ;INE 1CIh,�PI. YE,t ; �J`-—- '. I E IOth ^ .�' UOI1r5 I `9 I �� 1 j I 1 ii Cth Ct. NECt.� a NE 1^uth ?i , \` ` a ( NE 10th \a-Wile v z NE EDth St \\ --� , 4,4,.. Y I 1, 1 -- 1Dth En� r� ir —� NE 4th ��(h �`� NE iOth .l�i� � �q:-.7. ;j_ 9th Sl. , �► 11 NEbthPI. J ao „ P�-i _ o i o NE 9y' \\\ \ c ? (((�� 1 ,-,1 — Q NE 9th Ct. ° �I�I ' ' II �` J 1'1s `J� I NE 8th Ct. —_—� J NE 7th � f— NE 5th �w' o u ' � NE 8lh St. z St '� ? NE E+Ih .i7__NE 7'h St ✓ _jib'Qui l O s� _ ®1 l �I 4.06 IF �� 3 � NE 7.h NE 7th SJ °� "IE 7ik �. - 5, Q E 6. Pi f °qJ / NE 5th i 1 L SFJ o CNE 6th m °3° °�e I (' l NE 6;h z T v Y� AyP 6(b �� 54�St. �I� 1 1�_ NF J t—fits_ILI! St. ”' —o z '",�E f Z E r 4 - o I B l;'EK—n 'JE 5th Si ! EL *� 1 LS ",i-' / ,-6-' ' ''' r 3.0 ti Edmonds I w `F / r, I=fd� ( --1 1,..., �<Y'" cso< �o l`pct. Jz �J/ 1 a 1' I I 411 WO MN NI SW Wa 05/17/99 6-23 Nr a CHAPTER SIX a Highgate Lift Station Elimination imi System Deficiency: The Highgate Lift Station can be eliminated with the construction of approximately 1000 lineal feet of 12-inch gravity sewer back to the West Kennydale Interceptor system. The construction of this gravity sewer will require easements across private property to the em north of this lift station. This project was begun in 1996. Construction is planned for 1999. Improvement: Disassemble and remove existing lift station through the construction of a gravity ori collection sewer. CIP Project No.4.07 Cost: $300,000 Priority A iii Beginning: 1996 Completion: 1999 i I� x CJI IINE 24l'n St. li INE 24th -t \ "�t �- L---� CCCJJJ \ A o N 24th~ II—i Z� :�I z� It`--i NE 23rd PI A o+ SE \ Z NE [ rd St <' S_ 102nd \ j �iI �i ��d 31`� ® to f iii ail o ! n �I! I�— NE 21st St 4\\_'' m o I NE 7�r. 100 \\ 1 >I aQ\ ml I �� o IL NE loth SL ` ` jUll o _ NE 20th o° 'l 2 \\\ I J is : I,-____.2 ^ ea � � � A� \ 6 al� Q• —a '-a' NE ) \ m�� o, , �� ( NE 17thp7 ,�YNE 16th;SfU ) P r� E 17th ' f oii 1 14thJ - a r,Y 4, cid . N Y �' l7Y \IH—t1-1— )I1 � `iI _ "I .,- Q NE 14th`St / U S� rjr. u 5� of is-tl� �\� NE 12th SL al c.,!L I— --� �L v/—/T--7 �o�� _ / _ NE 12th `� I NE ',lth 11 st. z a,t 11th z i 5 t Ili l �� `�o 1 NE 10th 117.NE tt r j r 1 E NE 101n j , 4" r Ct. NE to o v -�pi_ I I 1,,,,, ;, ^ I i�idE 'h Ct. ct o -� C� J rnc i U 4q a NE 10t� ,-- i, NE �E 10th n. Si I^E 9Ih 704 1 1 NE ICth ,r— Iiii St hili lit a 6-24 05/17/99 Ii WO WI RECOMMENDED IMPROVEMENTS North Renton Sewer Replacement,Phase II w System Deficiency: The existing gravity sewers are old and deteriorating. Further, these sewers were constructed with an inadequate slope which does not allow self-flushing of the sewer lines. IIID Consequently, maintenance crews are required to flush these sewer lines approximately once a month. In addition, their condition has deteriorated and requires replacements. Phase II would be those sewers not replaced in Phase I.This project would also evaluate redirecting flow from the 24" 1110 interceptor in NE 6th Street to the 24"interceptor in NE 4th Street. Improvement: The replacement of approximately 2900 lineal feet of existing 8-inch gravity sewer a between N 6th Street,N 4th Street,Wells Avenue N,and Burnett Avenue N. CIP Project No.4.08 Cost: $580,000 Priority C at Beginning: 2002 Completion: 2002 z iI z L Nath Sit l \ ��I Juai S.,, IIrtlr I \, __ NE 7th Ii aI� �! \ JI cIr iitS z- _` I l - oI ....,,, ii V[ h St. I y ' a °' J`1, --- ,„. .Th a' Ili 0 1 o c �II I,.._. � `o N6thSi. —J114.08N6lhSt. I j J m o�, q�4,� A7F67h Q� I_i 6th St. -- , r— I: of (" (� r1 Q /1 11� NW Slh 5l. 1) M L N 5th St. o o EI Itdr ds C�I HID 2 r� 0: Oc i �;,�t" Spm �, El G �` 9 ds I,- � _ c ^r lr oc I J p_i_[_ J'� N 4th St.— -yl � IJ I I In INTI�� z;Il \ J I I z �I FII aiL / I ,�d j\ o I(I; 1I �,\ I! J Eil �y d Airport Way L N __, NIeN;�.oIt I / � - — ( -1r1,► Wit Tobin St I ' ;L I , Wit J ��^\ •••,z ow .I� a > \:,•,•` os�A• 6 1 farQ Q � I /I S 2nd St o S(I c ' I J__ 2nd lit )'I I \ i IS 1N 00 05/17/99 6-25 ..D M CHAPTER SIX iii Honeydew Sanitary Sewer Replacement i System Deficiency: The existing gravity sewers are approximately 35 years old. Further, these concrete sewers have experienced severe corrosion. The City did some spot rehabilitation in this area to resolve I & I problems. Those pipe runs may not need to be replaced. The rest of the vii system,however,is structurally compromised. Improvement: The replacement of approximately 7100 lineal feet of existing 8-inch gravity sewer di between NE 10th Street, Sunset Boulevard,Union Avenue NE,and Hoquiam Avenue NE. CIP Project No.4.09 Cost: $1,420,000 Priority F di Beginning: 2014 Completion: 2017 vai- ' I --+ ' -c,tNE , -!I:(2:19- St I 1/I fl ' ry l i 104+1 --_`J — ?,— NE 18TH I L �' NE 17th p i+ 1 St/ .-� + i \Nhttman,i-4 r—— N( ' :� a 1 1?th i I_r� S 107th PI — ) / i � 7'\-----Pr' NI o Q uI Z 7.-- 4----Er 1 -�� a I fwd I 9\ -_� 14l Sl6. v'+jin5��?� ass� NE SJ�S al' i'Q i� lig _ sII ' I NE 12th St_� I t , I I �� (�'' (tlth FI _ ----'-- 'A� J �I, �i 4.09 v -'-:-SC__. SE 1 3th - in ice` ilto S� Uh o NE `�L7/ ' v;l - NE Cth1L• `E+; 5r[0,:::\,-, 1, -, ,1_� SE 11.490, St iiii I— mac. � o <' s I I i NE y' (� ' NE 10th PI r I+ n I� ` 4�I St J N1 Ij a I i �� tiE C h � +�.� � NE 10th St _ �09 E 10TH St _i i_ Nt IO;h-iL ct I1 �r a —i __...,____=, ___._- . .-._-------_- 5 +C_NE JIB Stn Sf 1` vi_ _ S. 117th St E i i �_I y ,? 7� .. SE 118th I St S 1 —1� $ o � NE 9 C � -I r NE 9th Ct. I= a a II' < ii.,.-., JNE 51h Ct. I'° jfg 1, NE 8th St. I I L n z _._I �� )./1---r- --1 SE NE Ph St. - 'J z NE 7 h1 /L-r- �I `SE 1121st St111- I — 3 NE 7th Q,. -12. Q iv----16; -1 NE stn PI 11 _1 NE 5!h� (\_,,,,0 -111;:-, ^^thf I s + L 1 I NE aIi 6th i 11 I 11 . �� et so tiii go 6-26 05/17/99 0 OM AM RECOMMENDED IMPROVEMENTS Aberdeen Avenue NE Sewer Main Extension aro System Deficiency: There is not currently an existing sewer main in Aberdeen Avenue NE, between NE 12th Street and NE 27th Street. After the Completion of the East Kennydale ap Interceptor, a collection line can be constructed in Aberdeen to serve the properties along that street that are presently only served by on-site systems. „r, Improvement: Extend approximately 4400 feet of sewer main in Aberdeen Avenue NE between NE 12th St. and NE 24th St. CIP Project No.4.10 Cost: $880,000 Priority F al Beginning:2019 Completion:2019 qvao `,r (/�NP f�l N 32nd / 1 r-ml� N 3S1 S; NE 31st 51 I ..z41,..-1 4k, YrI N SOIh S: N 30th 51 ��_'-y £ SE e� e Qi t^ � r l r \\ �I N25,--,7—R, I �s` Nt �� N 5E 55th Wav a • 95th`, #t NFC.I.P. Me N 28th St �+--th SI / SE 95th khy 9E 959'PI \\'4 u 1 _ __--'---------T _ \ fk I ':31 NE-8"------,---- 27th S-t. \y � r ` i N 16R St. a U 1- §31!'- Ih stry 1.1_,—-I r - 4.101 €� u�� 994 .� �. NE 26111 71 x T\%•� 1 NE 25th cl iii _( _j. NE 24th Str ILE=4th SI \\\J� ��coOI f) \ \ N 14th Ind LJ NE 23rd P; W SE 101st S; NE 741 \ f RI g,. ,:I V�tl d �� ✓� B A .�1 12nd .n x[2 L \ s" I<1 �. _ NE 23rd St 1t S Ma CI t TS tA, IOW \ . -1 NE 20th SL ' t o_JI NE 20th 1 f7 ,,, !NE flat St I S j�, """1J1VJJ \ _ // n \ ;� v�- c `\� I , -1; I y%NE 20. �^ a u .,� \1 L a;, NE 19th Si J' I NE 1 'r+l SII m E C �, 75;. S NE 17thy an Tf' w u:.�1� r NIP "I� NE I6lh t. W /(� Ni 17 n IE ^ 1 d h r s 5, v I :I „1, I NE 141`h�ct NW NE 12th 51. JI L__-_I�I J i — r. I �r r_�E,''� NE 12th St + / I" �i� IIinR��' l��i I� J �• ®' �I i Ii INE 11tJln Illh _ uC P, titn 45` yid J I� SNE r, PI. r IllllSSS��lll �� l NE 10th % — u N[+h ---\\\\. li 1 '. 1 \ ..,_, PI. �1 fl ` 1�..ILl th 'c 1 NE''ti-2;52151.--) 0th PI -s Nf IOlh 1_$[. 1 �'ry`. II � NE 10th in Ln NE 110th 51 ',� R '--Stn /h 1`r It± L !Olh\ St ,E--0n— ti. �- i 1W► WWF lilt UM 05/17/99 6-27 tr. a1 CHAPTER SIX Duvall Avenue NE Sewer Main Extension ini System Deficiency: The Sewer Main in this portion of Duvall Avenue NE is along the west side of the road. Because this road is considered a major arterial,the City does not allow property owners to cut across from the east side parcels with side sewers. A sewer main along the east side of • Duvall is required to allow the properties along that side to connect to the sewer without crossing the roadway. nii Improvement: Install approximately 1300 feet of sewer main along the east side of Duvall, between NE 17th Street and NE 21st Street. a CEP Project No.4.11 Cost: $260,000 Priority F Beginning: 2012 Completion:2012 viii C ,,, SE95hWo E95th' y -�� SE mQY UetleY Rd ) Ili �SE 95th P1 9S. ! z � �_ �E i � - — - 1 .. 9atn st i-- / J +Ilii INE25thP! NE 28th ( 3 ( NE 2bth Ct� --------'\u, ``1 SE 1001 St _? �� i, --I 1`A SE 1Clst Sf �E 24t_�J NE 241 SE tOUth PI n I- t —_ �� __NE 27n VE 23rd z� — nd I J v v 102nd INE 22nd �' 2 J E 102nd,i �N 1 z o V N E2n3S _drE 22r,� % e(NE—E222insdt 3PI i rvE 21st 1Q r �! �\n > It l1 .(NE21stSi. �l ��? PI NE 21st �� P � N iii 1�_ NE 20 1' INE 19th I E 240th �� o'er cx ——. ISE 124th $t, 'JE 19th SI J /r‘.__NE 1 ��z .J f Z SE 'C4n �iNE 17th p7 ) r z JNE 18 I �l y Itili II Rh;imon P' a.1 t — __ < NE� ;17 h I1L—_._ � ��{107th PI ,_ J- (l�-z^ tii zr,..._, ol1 < `g��a I �1 e�� NE 14th St I a� S�.Z� 1ssP9�ah R d z 5,,,,5 a' rQ I 4,- I W QL NE 12th St_I - NPIl II a 11I� �I Ai I L ) 11tH PI. L�4: n ✓ z SE 112tH PI - -- __ 1 11n,` II I' [-NF 11th 1i CI II' =I 11th 1^�� I it Ila z I it- SE 113thISt_ �'H a al MI to 6-28 05/17/99 ow o" RECOMMENDED IMPROVEMENTS Union Avenue NE Sewer Main Extension um System Deficiency: There is a stretch of Union Avenue NE, between NE 2nd Street and NE 6th Place that does not have a sewer main installed. There are three sections of sewer in this stretch that need to be installed to provide service to properties in this area that are undeveloped or on septic tank. + ► Improvement: Install approximately 2200 feet of sewer main in Union Avenue NE,between NE 2nd Street and NE 6th Place. ,,,i, CIP Project No.4.12 Cost: $440,000 Priority F Beginning: 2017 Completion: 2017 ow —� .tom y I ; ,t r — .I 1 —J \� ,yf. 'VI I NE Il)th lo ll n —C_"�I t0''�St�'�`� '"^I_ NE mai St �I 1 ,7,.:-1 NC 9th 7074 S7 `r-�J� �, YF t S St ci Lir t r--�-_�� I 'S Nc __914 St. }� I L$I17ih St -. J��J I \,‘, ,..u, gib Iiii_ �� 1IIINE 9 C.[` �� I — �� Ir 'o' — �� I �N k a 171 �/�i rlE 9th Ct. I3 r!r�<!U1� ,_(—'_, I:�NE 8ih Ct. ! I �I 1 !I`--IIlh SE. v 0. NE 61n SL I g �.m --__ --JI _. 2c.-13 ,--1 NE 721.S1.___�1 2, r".-7 f _l,,� oIi . l� 1, 'Ito y\. 11---,,,--11,1L7-;-,: NE 7iJI�� -iI�(-�l SES ti'sl 5! �i I I[� 6 dC 6 CI -__- I � IAV// � f- INE 7th pt � hE 6 r P! �y NE eth` r ,Lz ,J H �r-1 is _ Nt 6th 1 > & N_6th 1 h 73 VII ! e ?-- 1.f,, ,_2= --),-) A 'a' 074 6. 517NE a'I 6th I St. �' Mg z L �� ; '� �'•�'a �. ® — ( a SE Oath SI �f nloir— 0 0� NE 5th S---= .___-_,H�iu I i .. I ^ �h fTh___J,, Ct 4.121 I i QII I`.� I - �_ —.'- NE uh St.J NE 4th ISI. �,L---. `_ 1 \\.)✓ _--—_ ----�_�I NE atn st 77 l_ I SE 128th St �l �"Ii /� w �r NF 4th 5l � ---i SE 128th Sl_ ES I i Ir—= =;J-- — `W I _tl� a i NE 3rd P - ,..i + I i I _I Nc 2nd St ' it ,. _--ii _ t 9 r ��.� i sEl t32_�I ,I SE 1,. NES/s7 .I I N 1 IrS i II �1 N 4 (Cl I �I , ,I 2, jl 71 c�_,1 +I I I I de LJ SE ter `-- . (� II v-„- -,..--\ L_ ._ =�SE 136th Vit_.._ � � II cc,, IIW 111111 OW i W 05/17/99 6-29 arr CHAPTER SIX Sierra Heights Sewer System Construction tial System Deficiency: Parts of the Sierra Heights have not had sewers installed. A large portion of this area has been declared an area of concern due to the potential of failure the King County Health Department has seen in the septic systems in the area. The majority of the unserved area is not a currently within the Renton City Limits. • Improvement: Construct sanitary sewers in developed areas to allow transfer of residential sewer ari disposal from private septic systems to a public sewer system. CIP Project No.4.13 Cost: $1,820,000 Priority F en Beginning: 2012 Completion: 2014 v QI�_NE SSrd St -1` SE 51st St f/ to , \�J/ ry=„it., \� iiiLL l _ JSE 92nd$ I \ C-- NE 31s:SI �� / `\ "� v...„ , es `I $E rd � �,e el('mss � Q IL Mryry4 pv£ //d SE 95th W° 95th 1 `-% o SE NAY Volley Rd NF Ih St L�� a SE 95th PI 41s9J7 ---\--. __- _. l / $E 95th Way n 1 44, -\�-_ �E 27th Sto, L r ili 1----u----— 4 SE-964 „� C 95th z_ —I _— � " o� E �7 1 a NE 25th PI NE 26th C bC'x s j NE 24tn Sf ` NE 24th t \I-NI . ISE 100th _,S1_ o E 2Fth Ct a XDI rl NE 23rd PI sNE 24th —— __ L N�'2t I isf. ES101st St SE 100th Po -iL4� J NE 23rd Sl R Ill _ 12nd NE 22nd • .0 NE 23rd '' �/ z Wal ll u� NE 22nd PI �\ 11.44t ,., ,� II E 21st St �a� } +3cr— 1NE 22nd NE 21 s1 /� I N�_j_y Z�} I �L 21st St II ` e. 19 NE 2ts P',N 21st I^ NE 20th St. �,_ NE 20th (� —1 /1 _ ` • E i —t-1 I _ J� ��1 1-" = .73 - 1 w I NE 1202. EN�9th 3I ''E 20th( ___�J (I_ ZI e �Q 6- NE 19th St z W $E 10< L a� � '_ �_._NE 1 ��' zAn=o I 1 — I '/ NE I7tn p i r�—1 .f'zNE 16tH$t y �/ .I V IIWnitmttnQ r- ch _ ' _IStlL�_= t 1aV7 S 107th 7I Io ri 14th s L a rfl<El IilltE ,r---,�=r .—,�,�I__-�`1I NE t2tn St i ow a litt il ar 6-30 05/17/99 OW Mr RECOMMENDED IMPROVEMENTS Presidents Park Sewer Replacement Phase II .. System Deficiency: The existing collection system within the Easterly Portion of the Presidents Park subbasin was constructed in the Early 1950's and is comprised of 8-inch concrete sewers ow 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 32,000 lineal feet of existing gravity sewer. ow Improvement: Replace existing collection system between NE 6th Street,NE 10th Street,Monroe Avenue NE,and Harrington Avenue NE. ON CIP Project No.4.14 Cost: $6,400,000 Priority F Beginning:2015 Completion: 2021 kI 11,_____a_5.1 1LJL 16m si. LJt I > \ ;----I �� v r—z( y �g wmrl -21. _‘"j"-- '. 1 I m a NF'SIr�51 47 I, )11 I NC 12th$t _t�— L=I- .. `Iz .W LSI. N_121h St_ I ` ell 0 i__ I Itlh PI 1 3 r. pp a 900 3I �_� S NE 11t �`i,�I� >IL G�li NE Iilh I II EI I 3 ��W ;NE 10th PI,tI _J� (12�--lo II Q uE!o /" IA NE 10th _ I NEI �h CI � °�- " I lel I SU( `� Z iE PI. I '�4 ' z\��NE IOIh$t�l -'I \' NE 10th Sc I ,yF, � N� IG. ln.� �r� ��_ NE IDI}i 5�. 11� r mo < INE_ stn 0!S --1 �� \ 1 h ! y �� St. � I N I rW it(�____� 1_� �'? 9th St. J ) bS g • "L�-��■ qt PI. I g 'NE 9 C C -5 SE X11-6th. st I ' m € 8th PI. '-' __ N(//�Io S 5 - ;NE 5P Ct. i.7 IIf1 .'� In 3th S��_ a` ��o _le Ill \ U IMP _, NE Ith NE 6 SNE?lh C. f Ti � = NE Blh A L NE 7 e EY iT ---------'(t,--JL . °o 4, A, r NE 6lh 'I. i taw I SEP 1 ell ^Att> F6lh 6 d�.I� a - 5i St. I tg k< z t- 3 I I I G��_)(� N'Sln�St I Ih 5!. Y 3 E E N th[c�% ? _ _,L,__,.4„.1, I�„1! c �=J Et.. end`�, In..c '-� n i! —o s (T _N nth St_ _ ( NE 4th SLIIIII it NE 41h st, _ jI NE 4th St 1 1 _I Y tl li\ �!/ / n � �I � Ir— Ii`I 4ti:S I1 ._—._1 — !—_ �C—:: -- --5 .II OW INN OW 05/17/99 6-31 1 tit CHAPTER SIXiii Sunset NE Sewer Replacement(N 4th to Park Pl.) ini System Deficiency: The sewer mains in Sunset NE,between N 4th Street and NE 7th Street, were installed in 1942. The sewer mains in Sunset NE, between NE 7th Street and Park Place, were installed in 1959.These concrete sewers are approaching the end of their useful life and need to be a replaced before structural failures occur. This project involves the replacement of approximately 7,900 lineal feet of existing gravity sewer. at Improvement: Replace existing sewer main in Sunset Blvd. NE, between N 4th Street and Park Place NE. el CEP Project No.4.15 Cost: $1,580,000 Priority F .11:41‘-'' Beginning: 2018 Completion:2019 , :� `� "�'� NE 14thUSI \:�� x� II II //:r1 / \ y. t ttl NE 17th SI. � 4LJ /1U1J '1 ��/ al= n ', I \ I /,„ -NL -i','11 �_ V; I11thP11— �� 1 z /!'�` U8/ `S \/� �FNE 11th ct,I � a?r11774\11Ih \, �I j1 NE- ' 11th I. a /NE 10 II� ''12 ILE Mth ILD Q3 f. � 1:--�11J/�--�o L 1 d _ ••� INf 10_- f s ,1_, \ NE 1Uth I�i 4�� M � I1 V '��1 A\m�. l N. "Utn SI f 7• ��VII NE Utn J I -- -�—r� NE 10iH Ipms 4EI �� 'oh ']J�—�� NE 16th 1`_St—J L__ v Z = u IUI ' 1.1 1_NE I, 9th St. AI ,...�.� —` t — P. I I' o�14 SNE r IIc �� SE IIBIh 51 ,, \ I�-� 12!.,:/ ---"-%"-:1'I� 11;' Iv�Iv� �` NSE 3,c C.t IIS' Nam s.l +) s iI�I �_LIE III I— , yv, Nf 7tF �o .... ,V / ,g L_N.6th C' I c_ 1 NE9lh51. �--'' _ g ` s NE Bth St.St. /�h NE 7th St. _I 3 INE%h Imo. �/L '^ SE _2 1 < .� - `* NE 6th �� 1NE 7th Qt. i• 4 �I `gg--1IE . PI l ) N stn st. I — q I'1' N N n 1 di _.IL =_; — \ a,!Ai r sl.'=�1 _J bin_ st= ...517-_---in 1 = i 1 a N Slh Si 0� 3 tw%-,c,n a it � �.�I , ''JJ 1/4_ tt L NE Sth �r ei U �iL Ji— <<� �®..: 9_I N 41h-t. ( 4c n!h SI NE ath '�E'1I(��7'�l L / ' NC 41h sl--j�— � --�—N NE lry Pill — ,E, 1 0,_ _..____,--1,--------..i.' cE =1,1 r i °[tJTfill41 ' %mm n I NE 2nd S I (i a ,y a 467 itil 6-32 05/17/99 a so Ile RECOMMENDED IMPROVEMENTS North Renton Interceptor Replacement imp System Deficiency The North Renton Interceptor handles the majority of the flows coming from the Lake Washington East Basin. This line has experienced capacity problems. The City has been completing small projects to reroute flows or minimize impacts on this interceptor. The City eventually needs to increase the carrying capacity of this trunk line. y,, Improvement: Replace existing North Renton Interceptor. CIP Project No.4.16 Cost: $1,000,000 Priority F us Beginning: 2017 Completion:2018 W/ / / YI NE 12th St. AI 11 Jii_ !LL' OP / 131 '0 fi------71-----:i._----c— / CI> v ! �Yo / ri I 1— ,r_ , ' — A 1 ' o�I LE ma. ��. 9�0 L i 1Z yy .Ya i.. _.-, NE 10th J 1 �, 4.� o v r—�PL_L� o,��°� .5. < NE 10th —1 Y iTg(1 C's m � )„ 9t, , NC 915 1 NF 9th vF'��h S Il \I' zy •�I� ice' I'�[ CLIP '; 9,r , !F ysci NE 6fh PI. in.J=1� v z N Bth SL(, \ i I' _. __-._ .. .I a1 NE 7th DTII `o�L___III ' ,�1 To ' J yE ,/� c I ; ¢' 715! f— Do r - i v o y J �1 7 J I -__�I� c \ I C:g4� z��INE oth1 �l/j Ili --\_3' 'Po, q�N PI1 _ '� N oth S:_J� N 5th St. A� �� f (A Q, � n E ¢.\\ St./N!L4,hSt Z. ,r-,/ kJ, dJt I n w. OP itr UN w1r 05/17/99 6-33 w.r a CHAPTER SIX el Honey Creek Interceptor,Phase IV a System Deficiency: Phases I through III of the Honey Creek Interceptor were completed in 1986. The Devil's Elbow Lift Station and force main are scheduled to be replaced in 1998. Reliability concerns, proximity of a lift station to the creek, and susceptibility to vandalism make it advisable aii to consider a gravity sewer to provide service to 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, iii 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. a Improvement: Complete construction of the Honey Creek Interceptor in order to eliminate the Devil's Elbow Lift Station. a CEP Project No.4.17 Cost: $1,000,000 Priority G Beginning: After 2020 Completion: After 2020 Ili Iy I U v sF , , � St '''.:� �NE 33rd St w �A/ of 9; _ �_ SE 91 s! Si � �, NI SE it 1 SE 92ndi °- �� t^'e�c ��'E NE 31st St �� '-_ ",-.•-• -SEE cri:eek, 1 _ ��t � SE 9 rd �6 _ 4-..-::'. "s- - SE 95th\Vo ___---- SE 95th 'I n a SE 95th PI a 5t if" 95th tt s - , 71 ---\----- _�I SNE 27th St.�i I I 7 o I t� —� !a. s E 98tn St :c I_ I 1 -''L E !0 - i_�, __3 ¢ _NE 25th__. Y m NE 24th St. INE 24th t SE t00t St = �, W.. > €r —7 I NE 2 rd PI SE 101st St z c-- J zr pi�' o I � s II L "t a''SE 102nd NE 22nd 'I _d \E 23rd St �� N I ( I ` t J' n o �i --'�[NE 21st St Q�� I al NE 22nd St NE 22nd WO o NE 20th St. ¢ ;I o —J NE 20tH i�� ooa\ ` —J/NE 21st St_1 E.V 1 E--�17E---1 1:-_-_--)1 (�i�� I `U Ir 1of a iili Ili ii 6-34 05/17/99 a lir we RECOMMENDED IMPROVEMENTS Devil's Elbow Lift Station Elimination 'rr 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 err 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 ow Interceptor. CIP Project No.4.18 Cost: $50,000 Priority G ow Beginning: After 2020 Completion:After 2020 4th 57 ) ILS �_— I SE_ 901Sl J MI NE 33rd Sl SE 91st Si v �� c .4... t 90�h 2^ nd.SJ SE 92nd St) ---�(f �, \ Gey (t ^\ 'E_ NE 31st St ,� �/ \� r' \ 4 ti _c J INV to st ' ;-1�"'��, � sE s rd� -el(' IllE�--:\n ��e y. Piz_ SE 95th`ND E 95'h Nita th SI it Nth St __--_-_-.7---------Ra 95th PI 9S� it OW -- —r— <iY _J 3E 95.1 Wry / tn 6 J NE 27th St N �`' j t, (s,,,, - a U .8th St z�j -� +7� sI I F 1{1 d i L_ 1 a NE 25th PI NE 26th C J`1 • xl I NE 24th St. N�2 that \ DEVI \L sit\)\s 1 CE Ic00t1 St =I .16€NE ^4[2:,±11._ HirNE LIFT STATION 4: [ !h 24th i 1 r (�r�[--] NE 23rd PI t ';in, �E 'Olsi St 72nd --` ' iy — a NE 23rd St `18 f` ^ � q ¢SSE 102nd tNt 2md lNE ae I L9n !�E=_� 1.1:41 � dI NE SNEI NE21ct St �� zm'� o .L[ ST �, (n of I NE 5' NE 20th St I 11 _I-1 t NE 20t ��w \— ' !NE 21st St g a- ' w —IJ _I— ��J t ar 1 i NE20 NE tut I I I 1 I z i s , ( vl z ae �� LTh NE Lr a NE 1,1� z 1 I11? I l 11 !I I I(/�t1 ,6,,:,,, I',1, 71,p7 i j Oilman Qg`� r E 1 I OW IIIW WI Ole iill IVO 05/17/99 6-35 a CHAPTER SIX a Lake Washington Blvd.N Sewer(2900 Block) a System Deficiency: in early 1997, the sanitary sewer main in the 2900 block of Lake Washington Blvd. N was damaged by private construction. The sewer main was patched and put back into service. The repair is temporary in nature as it creates a reduction in capacity, impacts flow • characteristics, and prevents proper cleaning. To properly re-establish the sewer system in the area the City needs to replace and relocate approximately 300 feet of sewer main. oil Improvement: Replace the damaged section of sewer pipe, relocating the main to eliminate the conflict with the adjacent utility(s). rii CIP Project No.4.19 Cost: $70,000 Priority B Beginning: 2005 Completion: 2005 NI / d N 35th St ( 1 i' CI N 34th St N 34th St / :� , N 33rd PI - �� G I a NE 33rd St / li, N �3 J S, , //N 32,,J cE N 32nd St I N 32nd St L 1\\ II S -1.) i it-rid \iK_NE31stSt / � 3ETtl� I N 30th St N 30th St� � ��" • \ L9ih I N 29th St H 1 1 9 — --_N 28th St ! I Ai �� M€ th St Ili z - `.„_ NE._________:_21L2, \ 5fh St. <� i i { \ CU -Eh i nr I .. C^ \ ,_ ..:12i,, f �I_ ^� °'+ m L____.!L---_-,t NE 24th St� a I. 111 f► ilki Oli 6-36 05/17/99 VW I"' RECOMMENDED IMPROVEMENTS Summerwind Lift Station Rehabilitation err System Deficiency: The Summerwind Lift Station was constructed in 1987. This is a permanent station. The expected life of a sewage pump station is 25 years. Summerwind will be 25 years old U in 2012. Renton should plan to rehabilitate the station in 2012. Improvement: Rehabilitate the existing lift station. +r. No.4.20 Cost: $200,000 Priority D we Beginning: 2012 Completion: 2012 IIIIP _J y.l z / Q Q NE 25Th Pi NE 26th C err .s I gt} ,(S� � 2�th Ct i� 6.J ILL_�;�- -1(� ta.zo l i NE 24th N 2, . SSE 101st- r--- -�-i r-- 1tif i SE 100thsP� -111 j �, ` \ r�E 2J NE 23rd 1_nd `; rt -- c�3rd A 1 102ndli INE 22nd --� — _ -----22nd ------ - -SNE 22 0 ` 1 �//r 22nd P1� NE 21st 1, r I NE 21st St--JI o &�i o 1 N� 21st PI!NE 21 f �1 „---,,--1L!SE II 7 y .3 E4 / NE 19th - c_ L .04th t, > 16 NE 19ih St m I ^ J z z. SE 104t1i n.-, f NE Ally_ ,�'��/-7- "-, ? ,.J� , wK4N �,,, I .. �, J NE 18TH StI"�¢ z ,I 4,-),..7i 76 I' VVhitmcn > a NE 17th _�.o a 17th zI! ti' -- �- S� 107[;1 Pi 1.---\ x�l gm No taw ow arr Mit Ill 05/17/99 6-37 rrr a CHAPTER SIX Lake Washington Beach Lift Station Rehabilitation e System Deficiency: The Lake Washington Beach Lift Station was constructed in 1968. This is a permanent station. The expected life of a sewage pump station is 25 years. While Lake Washington Beach is over 25 years old, it only receives seasonal usage from Coulon Beach Park +in and thus will last longer than 25 years. Renton should plan to rehabilitate the station in 2012 when the station is 44 years old. a Improvement: Rehabilitate the existing lift station. Project No.4.21 Cost: $150,000 Priority D inf Beginning: 2011 Completion: 2011 r \i„,1\ I I 5i --• iIN.7tst St , 'Vtr'lA °L_.t- ,NE 2-51i'jFit �E IDth St ,_ �NE i^M "h 1 LN.LS��, S� l�"�� -;',11 ® \ i ,rIk 'i- Ail iiii �I ' / 51 a 3111 NE 17thI� II r� II ,17t 9 -II- 719-I-'="17111 a ---,/ ✓ 61 j Y K?/mist \, tj u<E w�SN.XEICk 1 NL 17th SI L___Fd ILL :r ST�710N � _ -- !1E 1';h s! 31h L tI z �./ z '—'lI '1_1 Y 'lh N. { a U �� I tllh PI Ir-11175'J F .�`�I I qh r 1l � 1 Et INE 111h 1SI Jl tt_f y C4 ! NE I^,IE�II't,` li £ Y¢ I NE I0th I r 3 -- ,' �W11 I EICth �.�' S F i `7 � �U/`�,C n { ///� CI. I.� LN- th'SI ,'1 ,, i ` 9 NE 10th PI. �'/✓F ` "�� NE ICN l� L r. is1 i s N 9th 7C7 V I�^J�JI� Ds $ 1`'J03 ' �Ji sth st. /rL'.',' —11- 0: _- {{ I -`\\ [9`P ,,,,--Li—,—;,IlN` C I Iai - D I fi $ I k �. 3 c' I, N doh 6t _ _ � , II l l f —NE 91n SI ,Q SS 17� s I I� 7! -_� �\^� c NE 8th SE , /��I0 NE 7th SI lU �,,,rtt _ LNCw 7th 1llh l �' I = NE ! I, ��;1 �L Jll I `g,1.—,\,..i� t, , fr, Iq I,,, 7th \..,5\%>1!ip 7NyE ,fi t N 6th$r, I I `1 ti1h 51 J i , P Z NE 61n z , ilifit Ny, 6th Sl. _, J N' '\yrn��r�{ i.. ,`; .J. I' NE c L_- _1I_St JI? � � I �I 1E SIh I(_, �LFS LN�!"ilsl. � o 6'2\ t_ ( A i l E'r1i � 1 i a r I a I e qs aP t s g an \ / . IL N In St !� ® � �►4/\ !�� NF<:h:I I !I ill a iifi .a lie a 6-38 05/17/99 a OW ON RECOMMENDED IMPROVEMENTS Lake Washington No. 2 Lift Station Rehabilitation we System Deficiency: The Lake Washington No. 2 Lift Station was rebuilt from scratch in 1994. This is a permanent station. The expected life of a sewage pump station is 25 years. Lake tor Washington No. 2 will be 25 years old in 2019. Renton should plan to rehabilitate the station in 2019. off Improvement: Rehabilitate the existing lift station. Project No.4.22 Cost: $150,000 Priority F r. Beginning: 2019 Completion: 2019 iiir /j/NE 48�fi-St. �SE 76thrSt. '1,. /iL� y ,,,,_ ., L11(/ „ 7/ ff---( / „,1)I c_____dSE 76th Fl.i ti 2t e' SE 77th PI r--- _ c IIIN NF 4 i I ir� s_�_ :`h Ai J' r � SE 80th Sl.j_�� SE��'r))t n_ Sr NE 43th •i — I \ iii l\ �I �2 Z as \ ,, i LAKE' . -'# a > �1 LIFTST:ill ON N 40th St o -- 0)1 -7 ; ' _I NE 40th St f L___—,'I_-___i L ..if-� ;r if � H N 38th l st E) �Z`J I -3.i 1� I' c sE 86th II II cY pN 37th /T4 1 I I IN_____,___ _____]1___S,r____,88t$,I 1 I=--I. N 35 5t - -1 I E 36thI �St /d L_ N 35th St ) 1 \p '�, zV__:-.7 SSE 89thf ISI---- - 1I N 34th St Pt zn,;, c, < ¢w -- r , -—i I~ /fi ear sw live tiw UN OW 05/17/99 6-39 r • CHAPTER SIX et 5. BLACK RIVER BASIN a Oakesdale Avenue Sewer Stubs System Deficiency: There are not sewers installed to the undeveloped parcels along the Oakesdale r corridor. The Transportation is planning to construct Oakesdale beginning in 1998. The City needs to stub mains off of the King County interceptor prior to the construction of Oakesdale to allow future connections without cutting into the new roadway. Improvement: Install sewer main stubs off of the King County interceptor. a CIP Project No. 5.01 Cost: $100,000 Priority A Beginning: 1998 Completion: 1998 a 1 \ (/ II F y I j'h 10\S__ i SYI Clany jip_ \ `^ o .0 III II nl I . �%.51. –II_-p�l_61J �S�l__i -5 1` iii 1,/' I I 1 �< v,l� . ,T BI SE t61h P1_ '\ I �I I 8 i1II51i1h SI F ASI r I^In //� `'f •. li I , sl`S 16th 4 lit .;„ ) SW 19th St'"JOS lit^Sf1�,I In� 1111111 i o ::L Ratn 410 ® 'di �SW 21st SI l I '4 I ?si 521st 51 5 -- ----, f :11 .N _� 11. I I SE I SF I. 51 ç �IWt 1 1 ( S 251n SII 6% SW 271n St ' 1 WII 1 6� 1� 5 lIm cl J_ 16t1n_51 I, 1 —11 s2 to 1, s 4..y- I r-, a �S Av/ ii II 'Il 19th Si, II SE tti61h1 $ ill A ,, s 1 Q. ! ill 2 52nd 5: _ M Yi gII 531n - un�n ena I SW___________341h st _�I�_ sr��In sJ iid/ iI �i 1� I a 1r-7i / rl; nl "a�'!I CrI r r--\C- r a a ..., a a a 6-40 05/17/99 a ■r r. RECOMMENDED IMPROVEMENTS South Renton Sewer Replacement.Phase II Ili System Deficiency: The existing sewers in this area are old and in poor condition. The flat grade of these lines makes them high maintenance. Replacement of these sanitary sewer pipelines would or improve sewer service to this residential area. Improvement: Replacement of approximately 11,000 lineal feet of gravity sewer. r. CEP Project No. 5.02 Cost: $2,000,000 Priority A or Beginning: 1998 Completion: 2001 "� -ii NW 2nd ji t i ---/ ��1�LN11L'�di l It 1 ul L1J / ,9„ S 132nd St 1 % lobir, St Flit) a �J ' 11 °\p Ave i_'r________ ____. ,3,,_.,�s;34,6 --�`_ -; J ; i! / =:11-1.iii 1 a _ �i a 1!JJ OW ----------'*-- --------.1L-77,:—.1 1 Imo'—St S nd I` i,J ----7JLJL S 3rd StI1 :41__C,___V I�� II H _ F/yr,,,, 3, S 3rd ?I .1 i. AT I �_�\ `OSI`ti ®I Lr " , -, ,;/, \\,, '''''.` .4,22:-J''' ' ' ',iiiiiiii '' N't I----. Q. 516 F \- � —4. •IJILI[LJ __—IC a'� 4 f lig — -,E — — — SW 7th�t�L� N !._ �� Y ow ��s.o21 f- d�_L� ,,,„ , I SE ,r„,___,T $i 9rh ! I 8th Oc -. -, t OW a c,66,i '2Jc�' �_ / -W501nS� SwG u J tie mit ow Ole ill rr 05/17/99 6-41 or ii CHAPTER SIX s Renton(Scenic)Hill Sewer Collection a 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 al structural failures occur. This project involves replacement of approximately 15,000 lineal feet of existing gravity sewer. vii Improvement: Replace existing collection system within the Renton Scenic Hill area. CIP Number: 5.03 Cost: $3,000,000 Priority: D r Beginning: 2010 Completion: 2013 Ej4 / _ ` S3rd S_1! � a L yIi !�JiII`�/V \ so �o�� T__Ard1_21___III [- e p�PLo�i ,,, �I GIL_JI yea to Ti '''„ 41 z., -..kto t Cbl ) I :, l 4 :r L 7 Nth L�L1 .2-h �S_-, gr ,,,,,R\ ��_ �� IEP21 �1 f rr SW 7th St L / _JIL W7HESI- ITIJtit 42, 4_11 0 - --- 0 lig 8thll>itSE1lia .)_. -) v �_ _____ 13th Itrl I AI ® S� 1101 S�1 r°d1 °y i 1. U �_ v S Renton Vill°ge PI St i�' E :_i sk vli al \ -.'o 1 N 16th St S Isth_St_ul�i , iii 1\ -„ l�,l L--',1---,\\ , ,) ,,",� II in ais a en 6-42 05/17/99 I err r RECOMMENDED IMPROVEMENTS Talbot Hill Sewer Collection System Replacement trip 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 will be up approaching the end of their useful life and need to be replaced before structural failures occur. This project involves replacement of approximately 18,200 lineal feet of existing gravity sewer. im,, Improvement: Replace existing collection system between Lake Avenue S, S 14th Street, State Route 515,and S 23rd Street. r CIP Number: 5.04 Cost: $3,640,000 Priority: D Beginning: 2010 Completion: 2014 S Rentcn Viloge PI 1 ( (r/"// S✓ / t� St_- : -1 \ c tl 15 l'I 1 c" — L- SW 18th I��1 S 15thSl ,--;,- ` e ,,,, 1 I �o e S 7 SET./J., 16th P1 Je Q S 17th St o \ ,gf�St .1 = s' m S 18th O S 18thcp, ________I `) : ___ . SW 19th St LL' LOIS 19th St'. --- /if i \ \ o Rollln _ 'n ®n _ \\\\ PU MP > SW 21st St I `" 7- 0IS 21st St ( `�2l Dr )i�-- `r ,o t Il JJ N J SW 23rd Si j y--ir rd LSt�1 > SII t cn o ! 1� N �SE 1:2 . St s S 25th ST = J �VW 75, U 1 _� � \ --- SE 154th St Nirk611/F1114 )�— SW 27th St 1 \�l/ I S 27th St 1I��1— 6111 WI IS ill iiir 05/17/99 6-43 rr a CHAPTER SIX lig Talbot Crest Lift Station Rehabilitation a 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. This lift station is the only one of a its kind in the City. Improvement: Rebuild the existing lift station. CIP Project No. 5.05 Cost: $250,000 Priority A viii Beginning: 1998 Completion: 2000 EandY ylay ti i I //(y// --91-1 �� v �y t0 s' � Iii 5 Rentor Village PI i 12th St CC 4 y o 51I � 1 Z1 3 O� Ili 1____ sw ;6th sl S 15th S' �_ N 11 l ` �t6lh (4)••____: ,,, bh N, �° Si 161n PI ' G� SE . : II ! 5 17th S \ S/ I (j _ �'t e q c?^ 01'' `1 g V SE 16th Il L 7y 3 12-178th S 16th/ po n /e_ 11 ittii;% n i l Sw 19u s ms 19thst, .� s�� 6 'F, 4"�r- � fioll'in '�1 n ��F� i� fialy4.- _ sE 20, sw 21st sl SII = ?( s 21st.S I —�_or JrtibJ ' �� 1E 161st St _� �`�s . J I II r --=------7 SE 161st 51 SC 60th St i SW 23rd 51 I I J�( /��J 5 2_'rtl St I IN i ��I �I I I N 1 \ Sc Iti2r 51 I I� \ N TALBOT MIT i 1 c''' II 1 ` � �� _ a s 'ur;sunq 5 25th SY\\ nfi I —;67rd St-1; i I ` 1 s I �� I Pal it 5.0 ' /�// __ SE 164th St _=.1 �J l ;NI .;,I..-! i Pih q`--, SW 27th St JI 1 -� 6, m h IIri i' s 27th S1 ��--' �( S`15"h St ' ��/ IrI t 2'h ,�o ll Bir r- I II -s ti- _��SE 165th St —1 19th S1 II Ili W� 1 iI '\ ,.t t-\.... ' _Ifi61h R''S, II 1'41 �a `a a�� ?�J y- 4 S4.30th St (I �'I !I L_� In 1 __ 1 SE i66:n St� ��5E:fidlh St 1 -1 -- JL' S 32nd S1 ' tXli b;I - — a i 1 0 5 O PI 'V 'II !'l I SE 159th St P. \W .\� IT�-�r SO till Ili Ili Iliii Si 6-44 05/17/99 so "' RECOMMENDED IMPROVEMENTS Thunder Hill Interceptor Replacement ow System Deficiency: The Thunderhill Interceptor was installed in 1964 and is comprised of 10-inch, 12-inch, and 18-inch concrete sewers, which will be approaching the end of their useful life and SW need to be replaced before structural failures occur. This project involves replacement of approximately 11,000 lineal feet of existing gravity sewer. wo Improvement:Replace existing Thunderhill Interceptor. CIP Project No. 5.06 Cost: $2,200,000 Priority D imr Beginning: 2013 Completion: 2015 " / 'l$ / i\ --.1[121L11 V�u L U rya P C p/ ii il�� 5 E4 . a - Y S:h SI P qou_s_v p!, Li - .:_...\ _I...., L_ w,st / aII1 I B Lir 0 l SE dtr 9 Nmiv ! Ir , o16LStn , IMP Z `iI / f JLtHt SW I SW;,adyW°y 1 L-- (-e an nage PI 1 St ISt– le SW 12th St cs 2t� �'ww5 Dr sl IF Id Is' st. I�SJ� SI�,► 5151h 1 5 0 16th S yWn I N �o� S( Y 16th P. Q s w0' sF d I S 17th Sl l e(A S( ,11111;(1L,, S4 ((\\f - S 1 ian 1 5:161h � �b {"(. I L''''\___,___ S'w!9:h St S 191h St v. < Alp -15'7 �cc� aL st s1 l _ S. 4. - S'W 2.kd St bd St ` '" h __ L r— Y!6i;t 51 —� �� $E 6Dih 5; . 1 1 \ ..�/ ! fes � M—71i --1(_-1c-Ji� up NO tie Of NW err 05/17/99 6-45 a CHAPTER SIX oil East Valley Lift Station Rehabilitation aun System Deficiency: The East Valley Lift Station was constructed in 1977. The expected life of a sewage pump station is 25 years. East Valley will be 25 years old in 2002. This 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 were to fail, the lift station would not operate. In addition, the above grade electrical structures have lei experienced vandalism. Improvement: The lift station requires rehabilitation and major modifications to improve Ili reliability and in order to be upgraded to a permanent lift station. CIP Project No. 5.07 Cost: $150,000 Priority D iii Beginning: 2002 Completion: 2003 I CN, I � \ j SE 21st 51-1, 4_2( I' aL SW 23rd St l' JI l ! 2}d St 61st SI —� _ a'rj a I� ;\\SE IE 44 St yt s zso-.st <I I I W 1\il% Sc_F 1111 SW 27th SI n SE I64U SI ,____________________=______,_____, � AP 27th St � L 5 27th 51 I SE IE 2 h 9`F , y WI B j a —_1 fS29IhSl ' NI c� kl 2 Lt1 S, I $ < ` C �^ SW 30!h SI c 151.1 ``f' _ [ C �---s ® I SE 166tH St \1 S=2�.1-jst b --- < I d PII I < <i I SE Mtn St 5.�7 I Ifii S .L6 1I uj = g �-D I , WO < S! ___________.r r ST VA E ---=-J---1,-=lJ l Sw 34th sit 3<ts st R STA o r--- 3 a I tr �I j s -. SY�,79Ih St SW 39th Sty I r7?ale Seth 1 bl ` }X IEl ,-.. 1f X21 — — PefrovIs4,Rd SE I In I --- --r--, SW 41st SI. SW 61st sl I I '� i�- 1 1 � <i ai1 a YIjEw rar l illi J >179th c` _ - _/re�_____ SW 4Ad St. l sW 43rd SI. sw 43rd St ( / I it ` ^ ^ - VA / ttt s 4 d sl // �, � � s(�[y 130th PI I / 1 i'''' 1.___ •vii fili iii • 6-46 05/17/99 1i UP Or RECOMMENDED IMPROVEMENTS *it Benson Road Interceptor i• System Deficiency: The Benson Road Interceptor was installed in 1979 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 replacement of approximately 5,500 lineal feet of existing gravity sewer. Improvement:Replace existing Benson Road Interceptor. sr CIP Project No. 5.08 Cost: $1,100,000 Priority E or Beginning: 2015 /// Completion: 2016 4 ow �"I <l Ill i ��V / u 1�u'ln � 6th a 'a € sw wm s _is* efir wor \1 i J i y S fission Yiusge I9 - _ sr r__� � �o61 ac4 _��5rG7� St ��` .. l I �I � gan _ ';16th St. $t 5 I lh )) _�,' c�.p/ y, 16th 5 t Yom Sig 44, N / SE 16th PI d' 11- s S'er4 22 1 c s s E.4 c SY y' Fes. 141 _ is lit stern `,t,, s .ib SW 1915 SI§ S IL i j 1 I g �` - I �� • QY5191h$1 �� I ' fa I sw 21st St I r°r'-'s 21st 4 —_'�L��'� �"A r' tIILj PP4 s I — I Q� \�1 SE 21 t ' -i �\\9��1` SW 23rd SI JJ 11] 5 2.Irol _j�_�^U VW —�._I �l'.. 161st St �. �r� ell ' \ \ �l(i- �j \1 SE 1:2.St��If ��I I� 25th Sr LLL` , l `II II ii < 3 _ K163rd St I S ([}�} � � ' $E 1641h St ?I� ' f :� SW 27th St $W 27th S; W) s 'Q61 r13� \4 i 5 27,h$t —,—1------11 --�� _ SE 164tH 51 jul.__ —�_� ur_ Sly 11tH e 2:tn h (5W29th,5 rI ■ $ / \ 1. _I _ 56-5(16S6t---- 167th 516,351h St VI I I IR 168—tn St'D 51 ill Yll S 32 _ I a11 Iss Ir " . ,. )nr- err rr tor 05/17/99 6-47 ter e CHAPTER SIX et SW 34th Street Interceptor Replacement oil System Deficiency: This project involves the replacement of approximately 3,500 lineal feet of existing 8-inch gravity sewer. These existing sewers were undersized to accommodate the area that can be potentially served with this interceptor. The new interceptor would be 12-inch. e Improvement: Replace existing sewers that are undersized to serve this area. iiii CIP Project No. 5.09 Cost: $700,000 Priority H Beginning: After 2020 Completion:After 2020 • /7 11 ' v Y >1i11 I a((,.// I i I \SEt t--- �j �I $15ih 5i _ \\ \ I `\,2 �t \/ _SE 164th St riri I SW 17th S; J/ Su 27th St 41 1 'i �`—4(�„ i 271h 5l r �--__ ,i o I( 2 to %S �i iit‘\! : N (7.. (SW 291h Sy 1 {I i'''' e `uA'S z 1 J n\ \C vii c ( I) u_iiI i lie, s ams sl M --� N 67 �i -�J� g \C jl SW 34th St ___SW 141h 5 1 I `L ..„...S! 172nd sl sii P j,„ //4; S 9thStSWh 1 11 t fli i ( w I)!1 SW 41st St. I 7 SW /41st St i * l -1.---- ) \ ..... x i'lQ + I a ` — s [-1( U IP 0 d I S 1791h 5 --Jl\I -- w 4x41 St. cLSdSt. ) IS � - -- IBIS! SW 4Ss SI S 4•u 51 I l _��.. S "('''44;'-'40, pi , —�— _SE 191s't1 SI- —1� _Tema {l 1 I SE 182nd st —� 2 -`/ r `I I i ' ;11----- , .spa ! �� ! II a iiii a NO a vil 6-48 05/17/99 di IMO +` RECOMMENDED IMPROVEMENTS Talbot Road Interceptor Replacement it 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 +rmr involves the replacement approximately 4,000 lineal feet of existing gravity sewer. Improvement: Replace the undersized interceptor with a larger interceptor to better serve this Ole area. CLP Project No. 5.10 Cost: $800,000 Priority E tor Beginning: 2017 Completion: 2018 1 / `' <II a( � I ' LN I NSF MILL_ UN `\ N". I I 5th 5T \ j=.-J 5W 27th$t I W f' n GI ^� $E I641h$t 111 iW 27th$t •--11 --33.3, 2 I $27th$t 14, 8 �2 to 3' i 9j S g T a `�`*/$If — I`W 29th 51 „ 1 S \. ✓ 2�44'S \-€ _ v♦1 .J a C' /! bS ♦ SW 30th 5t)I �I �,.J�Y] �'♦ II C� S 32nd SI �7 "N 6X Ye' iir SW 34th St $W 34th St 5.1. Ai k:sr ci� I �I 'Ir Lb t —I :, ` 172nd 51 52 i y5 J61h I. Tr `lir `, 51��191h St SW 391h SI ,38th I al !1)/) ( li -- �;r' \� PetroMlsk rL I SW 41st 5L 5W 41 s!51 N1 _T i I I LI__.li'\ L r SW 43rd 51. SW/3rd SL / SW 43rd 5t ® 5 a d$1 S 2 _ O 1 l�II91sl � I____� r !! �¢ SE 181 td 51 $ US2nd ' IF SE 162n� St 1 attn Pi !!!! II If 1 SO 3/ �i <d .�eD li I II ill. Irl iiii Ur IMP 05/17/99 6-49 MP i CHAPTER SIX NM Lind Avenue Lift Station Rehabilitation lei System Deficiency:The Lind Avenue Lift Station was constructed in 1978. The station was rebuilt as part of a local improvement district in 1983. The expected life of a sewage pump station is 25 years. Lind Avenue will be 25 years old in 2008. This station is considered a permanent lift station, oil 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 were to fail, the lift station would not iv operate. In addition,the above grade electrical structures have experienced vandalism. Improvement: The lift station requires rehabilitation and major modifications to improve so reliability and in order to be upgraded to a permanent lift station. CIP Project No. 5.11 Cost: $150,000 Priority D on Beginning: 2012 Completion: 2012 ��t y g I Ei1 tJ d Was) / , la (( `� L i"_' -� S Rent_r.Village PI I 1 \. V s \ I r' ,_--,__,J,�- gtaY �� v .:! ,\ �,oY /� I� r C $W 12th St ''------ / wiitd I ,,,i '(6) S!�161h St. ,L SW' 15tr; St jI lam S 151h St ( P6¢ \ L''. 11 >72. a < s nm sl s, - x •o � I � �� 9 L LIND AVENUE ( > �' g i S 16�hJ i p , \ _ ,I UFT STATION L SW 19th S J 0 S 19th Sl 1 I / j 11I,-- ¢I 11 1tI Z 1 ,J ' Tli I I `JF 181 SW 21st _At ` j e rj1S21sSt J23d[ h :i \ �11 Ali ;'ll " N .. I z!! S 25th ST % I Lsw2711St I — �1 `S� n c -- t SW nm St �j I =� 6t Sti`° /,c, s 27t1 : I ii 1I nS2th ,kp%) a� s,�. ilii MI t ilit iii rl 6-50 05/17/99 Ilii or taw RECOMMENDED IMPROVEMENTS 6. LAKE WASHINGTON WEST BASIN to Renton CBD Sewer Replacement.Phase IV IleSystem Deficiency: Existing sewers are old and in poor condition. Replacement of these sanitary sewer pipelines would improve sewer service to this residential area. Improvement: Replacement of approximately 11,000 lineal feet of 8-inch gravity sewer between iisr S 2nd Street and Houser Way. CIP Project No.6.01 Cost: $2,200,000 Priority C er Beginning:2006 Completion: 2009 too end st \c--------��♦ X/ I� uw znd �� r� a�l1glib—� � c+E ieth SI !� R�I�S 1J2nd St 8 I c • S Tobin 51 _ j��'j ;`A. `* Aro •�l m V'11 F`U{•o Q' I V ILD ill, \,^1�`/�// S /fes/ (`� 1, ` \� 341h Si �-�1 :I 5nail_ I�SofI11 ' "' . � J._ S �•. � 11 II IIJ1 liAl I `on;, sy`,,w- � �, it ,r-, y'J c acme ,,„, AQ pimil ,AttlS lah 'riz ,1-- II SW Sin p/ I I•oh E ---V- LSW 7th SI D�.,ii[E 0 , ,ti ! 41!_., O c �,- �� yz, � ;i 1 8th g \ o N Y t 11 :-L„,4 SE 6th �i ,'\`I' o. 5 Gcody•'" �_ L c s SW ,f c/ � S Renton Yiloge P: I i kr° Analvolo ___S��t6th Si. SW 16th St �J\ �n�_� ` P�/ J/ 5, " 4516th S Lk CC l� ow wo wo to air 05/17/99 6-51 yr a CHAPTER SIX Earlington Lift Station Elimination a System Deficiency: The Earlington Lift Station currently serves the Earlington School near the intersection of S 132nd Street and S Langston Street. This lift station does not have the capacity to provide service to the North Earlington Subbasin. Also, flow from this lift station is causing viii 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. If the lift station is not iii eliminated through the construction of the Renton Avenue Interceptor, the station should be replaced(project 6.03). a Improvement: Disassemble and remove existing lift station after completion of the Renton Avenue Interceptor. wit CIP Project No. 6.02 Cost: $50,000 Priority D Beginning: 2006 Completion:2006 11110 21_ 132nd 51 \�1-------- / NII `-r___,,—, —P?Ar ;Nw _ , lI II �' .27;j01) > N,, ,191 IJJ1W�I 5 13jrC St_____.\ —� p 3 132nd SI 1I .1 ve ]135 h Sj TSTA IO A ��' rI I / ori �/ ,.,,,s'346 S1 CT `°I QitIl- •. c 1 i L._ S 2nd St I �� - �- — I W A01111 - 5�3 J — IJnJn��_� �_ Ili __ -//, �4p2h SI S it Cliar \ LIL(`I I /�if :illowr G l- / icbP, ic nta�J l I 1 I G SW glA 2 P r pi r—� I 'i v+ a _ 'sCe R p \• -_.II!R LGI I- I I1 _a\\ �`\ I _ SW 7th St _ Tiff / _ \ " i J 3 '3) I— // IanIiii lio o sw c+oav war i� i c� 1 f 5 Rc+:en Uleg!P \ c St \ ` u�r woY E_____,,.-. S\ —,, SW 12th Stum .... 11' - Sj1Sth St. SW L6ih St 6. 5 151h Sln �I _ it �,`�1 li 11 \1` <it,..,. 1\ S.§12_ a a a a 6-52 05/17/99 a IMO INN RECOMMENDED IMPROVEMENTS Earlington Lift Station Replacement to System Deficiency: The Earlington Lift Station currently serves the Earlington School near the intersection of S 132nd Street and S Langston Street. This lift station does not have the capacity to VW provide service to the North Earlington Subbasin. Also, flow from this lift station is causing capacity problems in the sewer interceptor along W Sunset Boulevard. The elimination of this lift station could be possible after the completion of a Renton Avenue Interceptor. If the lift station is srnot eliminated through the construction of the Renton Avenue Interceptor, the station should be replaced. Improvement: Replace the Earlington Lift Station with a station designed to provide service to er the subbasin yr CIP Project No. 6.03 Cost: $250,000 Priority B Beginning: 1998 Completion:2001 �y "-S i„'�m St —h L_-_-1-±32- 4,___A 5I_._._-��Vii/ I NW 2nd 0 L) ��Wa \ ) i(.14 k i1 Ld1 'i I.0 L11` S i'---- --------:9' 3____,_ `e.J 8.03' Reye_ 5 132nd St s _< Liam E_____11 — ` �' J4-77,4, s 1'sth sL 9'i RuST6Op - \ AVe Ar \Jun �I \ e I �� 1 �� I 27"\s.\ IMP o �J., I LJ LILL �_—�aor L c 4.,,, w ` s>ast :o = IIII E/ 0. --im h. ,---uolumiLgiEr wiltijr-7?, ! , ,----- , - /�y � � Jfsw >" Llbe 5f� ill k er Rd 5 `� I ) !I—._ _ — — — _— jgi UI1 It .� -7 fI� d ��^" ;rte - ,L � '—, 'MN \ lt s o NII I l �✓ �\v II ii ti f i --4 \ � N JJ �1 95 € Sw 100 St iW Caed )L �� .,/ Y.I Lt,I', 1, \\ I+, g �I�/� S Rentcro Village P, I ®� S` up \ ��,We( ® S� . I 1 \ Sfl 12th 5t. �� i6D�51. _�� 5W i6th (Sl�1 ,'n1�51tt\-h-5t�)t�� OW / I —�r iI 0�1 �I I� \`„iy.Z. SE 16th P OP OW IMO Ill 05/17/99 6-53 +r > r CHAPTER SIX r Earlington Hill Sewer Replacement a System Deficiency: The existing collection system in the Earlington Hill area 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 oni replacement of approximately 19,200 lineal feet of existing gravity sewer. Improvement: Replace existing collection system between S 134th Street, 80th Avenue S, and emi SW Sunset Boulevard. CIP Number: 6.04 Cost $3,840,000 Priority: C to Beginning: 2006 Completion: 2011 'J s'32ed s_ \ �II — Ai arf We a I I __1_, � L_________V____f/ �1� NWind,j1V �- --�� V V ILLN'i lit_Jl ®. i ort _S- `3rd SI _- /� \llm,�--, ' ______s_2,,_,4„/„.___, !`= „, s 132nd 51 s "`�� s ,stSI__t�� yam `�tI I IL�� 4 5 135th St , `h Ir m ' _ a ISI n M. \ t o f to St I g L JH t� S 2nd sl mit_-_3r tom ._ _`� -' s Sm St < `L �_J=/J/ //�-- 3-4--�t \60�, h\0-7 `� 3rd PI g e �JI I s I / %.. 1\.=--"-- ia it sir" ,q, d---i , .5, ---------,,..„, ) [1' \ 5 aiiiiripF1 --:1' -,:_ N__ L--_ sW 7th 5l / 73'. 101/[1].r/ 1 1 LI_ I ° ---li - -1 f--2 i V 11:: 11 :ill— i ,,,R \ C ,, ef ii , L. S 9...."L'`/ ..4 Iiii `� / \\1s. - s �y CtadY WaY s Icy' -� o V S Renton Village Pt \ \ \''' WcAS aol`_ ® 4 � a1 viii 3 SW 12th sl. a� 7 \ .�1 1 ` Il `` V/ ill, '411111. l— "i s 155th sl I3 C 5,,6111 sl jL sW 16th ,St 1 _ - �i 1( 1 u1, In i \ ,.S < . \ 5E 18th P iiii li WI Ii ili iiii 6-54 05/17/99 di ow I. RECOMMENDED IMPROVEMENTS West Hill Sewer Replacement um System Deficiency: The existing collection system on the West Hill (between NW 2nd, NW 7th, Rainier, and 84th Ave) was constructed in 1962 and is comprised of 6-inch and 8-inch concrete orsewers,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 25,000 lineal feet of ,. . existing gravity sewer. ow Improvement: Replace existing collection system between S 134th Street, 80th Avenue S, and SW Sunset Boulevard. ow CIP Number: 6.05 Cost $4,920,000 Priority: E Beginning: 2012 Completion: 2016 um ,,__\,,, -----,, U rtM l,` < lnsl iO®©u� I 'E:-.1mau our. . I= 1 11\ lIR)1�� k',,4a�U i '-- iliirL114-' =mac it SI •q t• S R )1 LI r//��I 'noir gm 5 11f1 Nein St. 1[e J a i i E=ci isw AN.N s i 1 a1, �� g YE.s st. a74t % Q��n�'�i EMI%. Ii 1\ `i.\\\��YYJJIIV� : < 1 SSP § QUI I ar ry® t Btn0 \ N Stn St. N 6U SL ,1_ y - -.--?[v. <[v I i r,s��5� s Int I - i- "la r�FFJ�� Nsln n. � tirrosq ., ��,z___„_ rIH,�,..„ Fifi � 8� jor,,,---- ... ag 5 Illb St .qvl.,,, rS� ��7y'7� _t lila st -�� 51,1x1 s1 ►+Q� 4 Sall enLAJ ` I1.>/* *'''' `�� ` ✓/s sa St p-P . €��I ®� �. ItiliAtYr ------ ).N1' NW q L � .�'.��ail; (1 SE 5111 SI 111111110111 SR 711,St ilakiF /1 11-11A- \\ \ 1 c-1 el E( II I! yx ..e1 _r,c simp OW WO OW OW 05/17/99 6-55 tie 11. CHAPTER SIX iii Renton Avenue Interceptor a 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 Iiii Interceptor would require approximately 5,500 lineal feet of 12-inch gravity sewer. Improvement: Service of the North Earlington Subbasin should be provided through the construction of a new sewer interceptor along Renton Avenue S,west of Rainier Avenue N. in CIP Project No. 6.06 Cost: $1,500,000 Priority D a Beginning: 2005 Completion: 2007 �!�� ` � `,p I�I�;'I{ I\ .,1/1,CM 5!'11xE 3t� �V1 --L-----i xr Qi. 1,!1;51 —_J`J,_]M `!s \s z\ �r ��\ Jfl tel s,, n �� 'r-11 st. 1�taoo i I g ( xeMs'i \\ i 1" I .,, 1 Ji],l, ,,,.?y, ,7 1 nsc sig 7z St "nn s'rii5 CA 10 .`1 \ 1 % 11Z0 „2-00,r SOIII. �' r `E_i ,r'�LLPp' ivw,` „,,,,s,. J x 6U SLii \�'T9 `fI�„ I�xi�_ St25M cl. IJpy{Ir�_I (��p�� 'lY 9 t /�1 s:6M 9� M pC rll t �l _��.j - S. I 1,` r��.�Jl_IS' `�'e•'a'IL/VC% us 6._,Z, 1---.-,-' ,-_,c ., . 4--=1.' ' -;,-"--ir Miliril i_iirh_s_24:/i ".:_--,.._______:::::2 1 rTEPIN- ,,,,,'' , e:' a�, ['� ,`I ,��Jf� ilii ;A� s Ils!M1 sl g M a. s �� f% a,�,N.. \-',:-.1 '4.,,,,k, ------------------as.. , '.'' ,./ S ' / --�--;—� ` � �/�LI A IUIJ iiii ...Wv D ' .O 6111Niiho.i N, S4 eMq �� ® ,, 1'- SN]M St jilinill: LI3lLTJ:l I_ L �, F (\1, ' - Y 1) ILII' '�� °tt ettlylig ell elli a Ili a 6-56 05/17/99 til IMO - RECOMMENDED IMPROVEMENTS North Earlington Collection System do System Deficiency: Most of the North Earlington Subbasin is currently unsewered. After construction of the Renton Avenue Interceptor or replacement of the Earlington School Lift Station, am a collection system to serve the North Earlington Subbasin may be completed. Service of the North Earlington Subbasin would require approximately 21,000 lineal feet of 8-inch gravity sewer. NO Improvement: Construct the North Earlington Collection System. or a?Project No. 6.07 Cost: $4,120,000 Priority D Beginning: 2006 Completion: 2012re ,:\----v // \ �� '"��i sl 1 5�Ivan;Liu IP= .sl ei �u®i, ‘ Xl. : —'� k f 4 \-1---- tJQ[c73�r ` ' : g �lmQn+F'4��13' 'f YF m tl y� "�R I i i —in 91 . sr shs Ovier3 L s Q / N91n5L I 3■ a rI _ +a9 N ®� ° {'�S BMI3 slLn�. =I - K �� i,J� so © :ma stl�sl. JPI /11„k`" uz Lvxes1111:, s,. N%ss C$`� \Lry^y'�'��II/ L it u QJI}SCR 111ISC1 Pl $I . �.ti� '[9u' 'I Q' £ 11CM15�® \ ,91251. N9Uhst �(�'*[\��\ G' �tIT y r '6, 611 SI. R �4 a��4. 1 1 I i 9 /'' VM ©51 '^ TIisY,� NM SM'-+ gotr:Is,. .: A��J,r' `'., 6.• •0 :2 ,N AN Y.oC q�a N,L,� T _ N„Nsl. /411.111P'®sr ,1 100 la $IJEM 51 NNjiT[Vinit i =j Avnnrl ip litlikill .ALb * ' , Nl' � % NIT; M/ip.ic -,„....,,,, 7.., , a A _....._ SE Sli,5!II'Y ::: ' . \,i'.01 m l k : - - \ . .., \\' 8 1„ �tI I i-_ 11�-I�c�' 9 1 c,—sw 1� 9m2 • sr N I On r 05/17/99 6-57 MO iii CHAPTER SIX a Airport Lift Station Rehabilitation a System Deficiency: System Deficiency:The Airport Lift Station was rebuilt from scratch in 1986. This is a permanent station. The expected life of a sewage pump station is 25 years. Airport will be 25 years old in 2011. Renton should plan to rehabilitate the station in 2011. iii Improvement: Rehabilitate the existing lift station. 0 CIP Project No. 6.08 Cost: $150,000 Priority E Beginning: 2011 Completion: 2011 nil ii[.'11ti;fl //�n NE ahP' _ S 1[1["�OlhSt �S �'112ii01ih1�i+ L z \rz'z,,,, o z I N 8th SL -'�'l . 122nd SJR 122nd St. z s 12151 sMS v g z Sj1123rd St I ,23rd St `; I a ¢— op C I S 123rd Pi 123rd PI. � 3 1241h_Sr ,lath t N 6th St. N 6th St. J " ' � m Ili Av �T NW 6th Sl. y mI S\5th St.� �(� L� �\ NW 5th St. s�oe =fitl .�i a' -- mI U :____t " AIRPORT lir' N 5th SL9oy� •LIFT STATION o I Gr °So° o nI\ r / s cl 'L _ _ N 4th SL iii �q� z z re,, ----g OD Zril • 5 130th Sl c I <' 3 WLI ¢' ' g ¢ ¢' 1�L�1 1\ \ s c g S o € I I of ¢I/ \ Ell o1.rir.:i Sl y `- Airport W°v NW 2nd -- °t -- . ... j Reo2�S L2nd St 5 i V 5 To— ,xag I I I�° ® • _ Axa ki, *Ave �C L_ a I �I�J r� ¢ ¢ `2iii i L/i Q7,.......„,,t, —_=_J, ,_L-_ S 2nd Sl y �,l ' �� iii ' ' I11 5 nd w ri a iii la 6-58 05/17/99 ®lid RECOMMENDED IMPROVEMENTS 7. DUWAMISH ESTUARY BASIN DUWAMISH ESTUARY BASIN No Proposed Improvements re sir rrr rr rrr am `.r irr 05/17/99 6-59 irr iii CHAPTER SIX tii 8. MAY VALLEY BASIN iii Misty Cove and Baxter Lift Station Rehabilitation System Deficiency: Misty Cove Lift Station currently pumps into the Baxter Lift Station which pumps into the King County 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. The City should also investigate pumping each station independently to the King County sewer. Improvement: Rehabilitate the existing lift stations to improve operation, safety, and reliability of dj these lift stations. CIP Project No. 8.01 Cost: $250,000 Priority A ail Beginning: 1998 Completion: 1999 / /r-1 rN SE 72na St i 1 11 Q-11 �SE 72nd St t S� SE '3rd St I'KTY OVEP t •P ., 16 "/ 7SE 76th/SL I °' I ''' Sr if C5 l(� 1� /.'.---- h a Ifs // :AXTER ® Ia l-- SE 76th PI;I Qt, m� ° Li\_h(Sl J t IFT STATION ( I gr>>thFl l y J= �t�SE 77th I I o i `� r ;-----____L--_/- NF h J 80th �y f 4. I. (ice E_,ths ii i , _f�SE 80th St : _2`1'f$, �` +I 1' i NE 43th •I iI (_Sc__ 1 11 '‘:;1 Vst-.89,,,a 0\JD I 1 Q I � 4I I i I Q �,t � l I ' - / ii \\ it_1-gY's'\ N 40th St " —I' Q' .NE 40th St _�I J`-" a n- m / N 38th St Q Q\JI I, 11 ` �� z �' I S U / v� I I ��c% SSE 85th I I \ F6-/v V �\ 9h / ,� / c ?N 37th �I i1 1 _ 1 AZ ' 11 1 ') I /�V A A, _ iii iii Ai a 6-60 05/17/99 4 VW V" RECOMMENDED IMPROVEMENTS Denny's Lift Station Rehabilitation w System Deficiency: The Denny's Lift Station was built in 1983. This is a permanent station. The expected life of a sewage pump station is 25 years. The Denny's Lift Station will be 25 years old in - 2008. Renton should plan to rehabilitate the station in 2008. Improvement: Rehabilitate the existing lift station. to CIP Project No. 8.02 Cost: $150,000 Priority D Beginning: 2009 Completion: 2009 f to ajr- I i j�sE 70; s, a �1v ,i Ir•,,I;oIH SE72ndSt. 4',=—Lj I •,=/ SE 72nd St II I ni SE 73rd St SE. 2n /� v a NW LN St. _ a' I \--- 1 �ENNYS N I \ '�S A ' I / LIFT STATION_ SE 76th PI. Q \\°U \ 75t VW 8.0 _ SE 77th P!. —te• t •1 f,4 SE 7 t si �( 02. o ft. / III .) SE 50th St. — cE o h C _ N ) 110 I: NE 43ih L-- I- I— SEB.th �l ,,, _ , ..„ 0' ` a I i T-i, I 'vi tie N40thSt > a' Iy t __ NE doh7 /? flhl th/% �51h ll c! a I� �c N. IrL/ 360h St Ii 1 SE 65thl[St li )/' \\ ... ....... W WO WIN VW lie 1W 05/17/99 6-61 .I. till CHAPTER SIXriii May Valley Interceptor,Phase II r 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. Phase II would extend south along Jones Avenue NE which parallels May Creek to Honey Creek and east to Coal Creek Parkway. Construction of Phase II of the May Valley Interceptor is necessary to complete the Honey Creek Interceptor and eliminate the need for the Devil's Elbow tiii Lift Station. The May Valley Interceptor, Phase II, would require approximately 13,500 lineal feet of 24-inch gravity sewer. oi Improvement:Construct gravity sewer interceptor in the May Creek Basin. CIP Project No. 8.03 Cost: $3,100,000 Priority H r Beginning: After 2020 Completion: 2020 J J f_Ne sag?t. Iu76ihi st. li `j' - �, $� /`' �\ l/ IXi \ " A B f4F.N illi ,, - I c� SE:th3, �c EO!h e76. \ \�'/,7 Sf I97d 4 i —1 _' � SE 9C-_ _ SEz ,01E. 01 __ �1 1 :591r�Av�_c� NE 431h'fl 1= I ; IN 1 SE:rhtla :zI a' SIIIaC.�9<1 a II40.St _ Imo_ L— 1\`�4�'\ 6 W j N,,,,-)10 ) ' \\ ( N 39th St=I ; ; ,,i Ni?' i/ \\ m I S� '� a RN thii I i y I '--" II k9� ` r�/ \ mi. N MIh 5! 1`—tl E J6t -5 J`�.�— l X�BE,Ih 51 41 N 35th 51 I 1 I 'i! \ / 1 's'99,1 s .3.3q J (----:1' / o n Iille �/Q+I N Jath 51 N 3alh 51'iI 3 6I v�� 3E 90 j ��/ / �'\'4 /!f11 e N 33rd M f==1 I 6 �,� /P*I it t��NE 3hd 5( SE 9!st 51 g M \' � 11 I � SE 9lnd sl � � L'ea,,. •'-�J I N= N 32nd St y-3�5'1 ai Ea3 0i)---"21 Y L .F a rgi�t� Ct..5l r—� E Sist 5! c\� E 1 l ''. N 30th S! ILN 30!h$L k 4' ;CIL -°C A. 1? I N 291,s! �� / a Ar - 95th Na ^`LSE 95th. \ .SII Y s ` SE�( v ¢ Imo-. 7.`� z,4 f 4oY Yaile. �r— �N 2E!hJ��l __S--- In 5! I �y 1`/ SE 95th Wu .-SE 95th FI „,I1�� 'PJ�,7 „ F -- N�E277�th'-St� �, �1- 'N75th Si. II ( 1 - T S:th St4,3 y ,.,I�.-_.J .i I l'I( I '� -\ k\,_,\[,..- a hE ISh:� YE 15:h � _I b lI 1 �I`s_il_INE 2at,51�11 NCI'10 t 1u0. St `irU1 .v � 4 I—pr,- 11,__.; 1<;y i rl� i ��1nn-i u: un PI lk T.) i :�! \ _...,..-,IL—SNE 2/!f 1�N. SI SE 1Mth t illi a la Oil 6-62 05/17/99 a err RECOMMENDED IMPROVEMENTS D. PROPOSED IMPROVEMENTS BY PRIORITY so TABLE VI-2 provides a summary of all proposed projects divided by their priorities. It is our recommendation that these projects begin in the following schedule: A- 1998 and Prior B- 1999-2004 C-2005-2009 D-2010-2014 E-2015-2019 F-Future E. PROPOSED IMPROVEMENT BY PROJECT TYPE tro TABLE VI-3 provides a summary of all the proposed projects divided by their project type. The various typed of projects are listed below: Lift Station Replacement/Rehabilitation Lift Station Elimination Existing Sanitary Sewer Replacement vie Proposed Sewer System Additions Miscellaneous Improvements Nis F. PROPOSED CAPITAL IMPROVEMENT PLAN SCHEDULE AND CASH FLOW gig TABLE VI-4 provides an implementation schedule and a cash flow analysis for each proposed improvement. TABLE VI-5 provides an estimate of the funding from various revenue sources. These sources included the following: tip City of Renton rates(standard replacement projects) City of Renton Assessment District (new lines providing benefit to future development where the OW City expects to recoup costs through Special Assessment Districts) Local Improvement Districts(LID)/Developers ++� KING COUNTY aro OW 05/17/99 6-63 rr Ilii iii CHAPTER SIX TABLE VI-3:SUMMARY OF PROPOSED IMPROVEMENTS BY PROJECT TYPE la PROJECT PROPOSED NUMBER CAPITAL IMPROVEMENTS RANKING PRIORITY COMMENTS EXISTING SANITARY SEWER REPLACEMENT 11111 5.02 South Renton Sewer Replacement Phase II 9 A 4.05 Kennydale Lakefront Sewer Replacement 8 A 4.01 North Highlands Sewer Replacement 9 B ail 4.02 Ridgecrest Sewer Replacement 9 B 4.03 South Highlands Sewer Replacement 9 B __ 4.06 Presidents Park Sewer Replacement Ph I 8 B : a 2.01 Windsor Hill Sewer Replacement 7.5 B '' . - 4.19 Lake Washington Blvd.Sewer(2900 Block) 3 B 6.01 CBD Sewer Replacement Phase IV 9 C ' 4.04 North Renton Sewer Replacement Phase I • 8 C 6.04 ,.Earlington Hill Sewer Replacement 8 C 5.03 Renton Hill Sewer Replacement 8 C iii 4.08 North Renton Sewer Replacement Phase II 7 C 5.04 Talbot Hill Sewer Replacement 7 C 6.05 West Hill Sewer Replacement 7 D tl 5.06 Thunder Hill Interceptor Replacement 6 D 4.09 Honeydew Sewer Replacement 6 D 4.15 Sunset NE Sewer Replacement(N 4th to Park PI) 5.5 E WI 4.14 Presidents Park Sewer Replacement Ph II 5 E 4.16 North Renton Interceptor Replacement 5 E 5.08 Benson Road Interceptor 3 E ill 5.10 Talbot Road Interceptor Replacement 2 E 5.09 SW 34th Street Interceptor Replacement 2 F LIFT STATION REPLACEMENT/REHABILITATION 6.03 Earlington Lift Station Replacement 9 A Alternate to Projects 6.02&part of Project 6.06 a 8.01 Misty Cove/Baxter Lift Station Replacement 8 A 5.05 Talbot Crest Lift Station Replacement 6 A 5.07 East Valley Lift Station Rehabilitation 3 B a 8.02 Denny's Lift Station Rehabilitation 4 C 2.04 Falcon Ridge Lift Station Rehabilitation 3 C 6.08 Airport Lift Station Rehabilitation 4 D lit 4.21 Lake Washington Beach Lift Station Rehabilitation 3 D 5.11 Lind Avenue Lift Station Rehabilitation 3 D 4.20 Summerwind Lift Station Rehabilitation 2. D ail 2.03 Cottonwood Lift Station Rehabilitation 3 E 4.22 Lake Washington No 2 Lift Station Rehabilitation 3 E 11111 ilk a 6_64 05/17/99 la wr RECOMMENDED IMPROVEMENTS irr TABLE VI-3:SUMMARY OF PROPOSED IMPROVEMENTS BY PROJECT TYPE PROJECT PROPOSED NUMBER CAPITAL IMPROVEMENTS RANKING PRIORITY COMMENTS rrr LIFT STATION ELIMINATION 4.07 Highgate Lift Station Elimination 7 A 6.02 Earlington Lift Station Elimination 9 C Dependent on Proj.6.06 wr 2.02 Falcon Ridge Lift Station Elimination 5 _ E 4.18 Devil's Elbow Lift Station Elimination 5 F Dependent on Proj.6.03 8 4.17 PROPOSED SANITARY SEWER ADDITIONS ""O 5.01 Oakesdale Avenue Connections 0 A Coordinate with Road Project 3.01 East Cedar River Collection System 8 B 3.02 Central Plateau Interceptor 8 B VW 3.03 East Plateau Interceptor 8 • B - 6.06 Renton Avenue Interceptor 6 B 6.07 North Earlington Collection System 6 C err• 4.13 Sierra Heights Collection Sewers Phase II 6' D 4.11 Duvall Ave NE Sewer Main Extension 6 D 4.10 Aberdeen Ave NE Sewer Main Ext.(12th to 24th) 6 E - 4.12 Union Ave NE Sewer Main Extension 6 E 4.17 Honey Creek Interceptor Phase IV 4 F Dependent on Proj.6.03 8.03 May Valley Interceptor Phase II 4 F tow MISCELLANEOUS IMPROVEMENTS 1.01 Miscellaneous Sewer Replacement 11.5 A 1.02 Lift Station Electrical Rehabilitation 8 A 1.04 GIS Database and Conversion 3 A Coordinate with Technical Services 1.03 Sanitary Sewer Grouting and Rehabilitation 7.5 B 1.05 Long-Range Wastewater Management Plan 1 B Required to coordinate with DOE and King Co. rrr ima ese +rr 4111 ar 05/17/99 6-65 °` TABLE VI-4:COST BREAKDOWN FOR PROPOSED IMPROVEMENTS ON PROJECT PROPOSED CARRY 1999 2000 I 2001 I 2002 I 2003 I 2004 FUTURE 0., NUMBER CAPITAL IMPROVEMENTS FORWARD Note:Project Cost Estimates are In 1998 dollars. TOTALS b SYSTEM WIDE ..__ ly 1.01 Miscellaneous Sewer Replacement $100,000 $100,000 $100,000 $100,000 $100,000 $100,000 $600,000 ;y 1.02 Lift Station Electrical Rehabilitation $25,000 $25,000 _ , 1.03 Sanitary Sewer Grouting and Rehabilitation $100,000 $100,000 $100,000 $100,000 $1,500,000 $1,900,000 >C 1.04 GIS Database and Conversion $30,000 $20,000 $20,000 $5,000 $5,000 $5,000 $5,000 $30,000 $120,000 1.05 Long-Range Wastewater Management Plan $100,000 $100,000 WEST CEDAR RIVER BASIN 2.01 Windsor Hill Sewer Replacement $630,000 $620,000 $350,000 $1,600,000 2.02 Falcon Ridge Lift Station Elimination $700,000 $700,000 2.03 Cottonwood Lift Station Rehabilitation $150,000 $150,000 2.04 Falcon Ridge Lift Station Rehabilitation $150,000 $150,000 EAST CEDAR RIVER BASIN 3.01 East Cedar River Collection System $1,000,000 $1,000,000 $1,000,000 $1,000,000 $500,000 $29,500,000 $34,000,000 3.02 Central Plateau Interceptor $200,000 $1,500,000 $1,700,000 3.03 East Plateau Interceptor $1,700,000 $1,700,000 LAKE WASHINGTON EAST BASIN 4.01 North Highlands Sewer Replacement $100,000 $500,000 $500,000 $1,400,000 $1,200,000 $7,700,000 $11,400,000 4.02 Ridgecrest Sewer Replacement $100,000 $100,000 4.03 South Highlands Sewer Replacement $100,000 $500,000 $800,000 $800,000 $560,000 $2,760,000_ 4.04 North Renton Sewer Replacement Phase I $300,000 $320,000 $620,000 4.05 Kennydale Lakefront Sewer Replacement $75,000 $1,500,000 $1,575,000 4.06 Presidents Park Sewer Replacement Ph I $2,000,000 $2,000,000 4.07 Highgate Lift Station Elimination $300,000 $300,000 4.08 'North Renton Sewer Replacement Phase II $580,000 $580,000 4.09 Honeydew Sewer Replacement $1,420,000 $1,420,000 4.10 Aberdeen Ave NE Sewer Main Ext.(12th to 24t 1 $880,000 $880,000 4.11 Duvall Ave NE Sewer Main Extension $260,000 $260,000 4.12 Union Ave NE Sewer Main Extension $440,000 $440,000 4.13 Sierra Heights Collection Sewers Phase II $1,820,000 $1,820,000 4.14 Presidents Park Sewer Replacement Ph II $6,400,000 $6,400,000 _4.15 Sunset NE Sewer Replacement(N 4th to Park P $1,580,000 $1,580,000 4.16 North Renton Interceptor Replacement $1,000,000 $1,000,000 4.17 Honey Creek Interceptor Phase IV $1,000,000 $1,000,000 4.18 Devil's Elbow Lift Station Elimination $50,000 $50,000 0 4.19 Lake Washington Blvd.Sewer(2900 Block) $70,000 $70,000 4.20 Summerwind Lift Station Rehabilitation $200,000 $200,000 J 4.21 Lake Washington Beach Lift Station Rehabilitat $150,000 $150,000 4.22 Lake Washington No 2 Lift Station Rehabilitatio 1 $150,000 $150,000 5/13/9913:03 PM It t IL It IL II I I. I I I II II t:. I. , IL II;,, ! I I I I I I I I I I I I I I I I o TABLE VI-4:COST BREAKDOWN FOR PROPOSED IMPROVEMENTS J PROJECT PROPOSED CARRY 1999 2000 I 2001 I 2002 I 2003 I 2004 FUTURE NUMBER CAPITAL IMPROVEMENTS FORWARD Note:Project Cost Estimates are In 1998 dollars. TOTALS BLACK RIVER BASIN 5.01 Oakesdale Avenue Connections $100,000 _ _ $100,000 5.02 South Renton Sewer Replacement Phase II $1,400,000 $600,000 $2,000,000 5.03 Renton Hill Sewer Replacement $3,000,000 $3,000,000 5.04 Talbot Hill Sewer Replacement $3,640,000 $3,640,000 5.05 Talbot Crest Lift Station Replacement $50,000 $200,000 $250,000 5.06 Thunder Hill Interceptor Replacement $2,200,000 $2,200,000 5.07 East Valley Lift Station Rehabilitation $50,000 $100,000 $150,000 5.08 Benson Road Interceptor $1,100,000 $1,100,000 5.09 SW 34th Street Interceptor Replacement $700,000 $700,000 5.10 Talbot Road Interceptor Replacement $800,000 $800,000 5.11 Lind Avenue Lift Station Rehabilitation $150,000 $150,000 LAKE WASHINGTON WEST BASIN 6.01 CBD Sewer Replacement Phase IV $2,200,000 $2,200,000 6.02 Earlington Lift Station Elimination $50,000 $50,000 6.03 Earlington Lift Station Replacement $50,000 $200,000 $250,000 6.04 Earlington Hill Sewer Replacement $3,840,000 $3,840,000 6.05 West Hill Sewer Replacement $4,920,000 $4,920,000 6.06 Renton Avenue Interceptor $1,500,000 $1,500,000 6.07 North Earlington Collection System $4,120,000 $4,120,000 6.08 Airport Lift Station Rehabilitation $150,000 $150,000 MAY VALLEY BASIN 8.01 Misty Cove/Baxter Lift Station Replacement $50,000 $200,000 $250,000 8.02 Denny's Lift Station Rehabilitation _ _ _ $150,000 $150,000 8.03 May Valley Interceptor Phase II _ $3,100,000 $3,100,000 0 ITOTALANNUALCOST $1,880,000 $1,450,000 $2,720,000 $3,425,000 $3,505,000 $3,505,000 $3,005,000 $92,630,000 $112,120,000 FUNDING SOURCE BREAKDOWN BY YEAR (See table VI-5 for funding source breakdown by project) City Share(Rates) $1,880,000 $1,450,000 $1,720,000 $2,425,000 $2,505,000 $2,505,000 $2,305,000 $47,110,000 $61,900,000 City Share(Assessment Districts) $200,000 $6,280,000 $6,480,000 b Local Improvement Districts/Developer Extens $1,000,000 $1,000,000 $1,000,000 $1,000,000 $500,000 $36,140,000 $40,640,000 ti King County $3,100,000 $3,100,000 ►S Total I $1,880,000 $1,450,000 $2,720,000 $3,425,000 $3,505,000 $3,505,000 $3,005,000 $92,630,000 $112,120,000 ,31 O LZ7 CT S ON J WI 5/13/99/3.03 PM � TABLE VI-5:FUNDING SOURCES FOR PROPOSED IMPROVEMENTS (Note:Project Cost Estimates are in 1998 dollars.) n O0 PROJECT PROPOSED CITY SHARE CITY SHARE NUMBER CAPITAL IMPROVEMENTS (RATES) (ASSESS DIST) LID/DEVELOPER KING COUNTY TOTALS ti SYSTEM WIDE >0 1.01 Miscellaneous Sewer Replacement $600,000 $600,000 t� 1.02 Lift Station Electrical Rehabilitation $25,000 $25,000 hG 1.03 Sanitary Sewer Grouting and Rehabilitation $1,900,000 $1,900,000 1.04 GIS Database and Conversion $120,000 $120,000 1.05 Long-Range Wastewater Management Plan $100,000 $100,000 WEST CEDAR RIVER BASIN 2.01 Windsor Hill Sewer Replacement $1,600,000 $1,600,000 2.02 Falcon Ridge Lift Station Elimination $700,000 $700,000 2.03 Cottonwood Lift Station Rehabilitation $150,000 $150,000 2.04 Falcon Ridge Lift Station Rehabilitation $150,000 $150,000 _ EAST CEDAR RIVER BASIN 3.01 East Cedar River Collection System $34,000,000 $34,000,000 3.02 Central Plateau Interceptor $1,700,000 $1,700,000 3.03 East Plateau Interceptor $1,700,000 $1,700,000 LAKE WASHINGTON EAST BASIN 4.01 North Highlands Sewer Replacement $11,400,000 $11,400,000 4.02 Ridgecrest Sewer Replacement $100,000 $100,000 4.03 South Highlands Sewer Replacement $2,760,000 $2,760,000 4.04 North Renton Sewer Replacement Phase I $620,000 $620,000 4.05 Kennydale Lakefront Sewer Replacement $1,575,000 $1,575,000 4.06 Presidents Park Sewer Replacement Ph I $2,000,000 $2,000,000 4.07 Highgate Lift Station Elimination $300,000 $300,000 4.08 North Renton Sewer Replacement Phase II $580,000 $580,000 4.09 Honeydew Sewer Replacement $1,420,000 $1,420,000 4.10 Aberdeen Ave NE Sewer Main Ext.(12th to 24th) $880,000 $880,000 _ 4.11 Duvall Ave NE Sewer Main Extension $260,000 $260,000 4.12 Union Ave NE Sewer Main Extension $440,000 $440,000 4.13 Sierra Heights Collection Sewers Phase II $1,820,000 $1,820,000 4.14 Presidents Park Sewer Replacement Ph II $6,400,000 $6,400,000 4.15 Sunset NE Sewer Replacement(N 4th to Park PI) $1,580,000 $1,580,000 4.16 North Renton Interceptor Replacement $1,000,000 $1,000,000 4.17 Honey Creek Interceptor Phase IV $1,000,000 $1,000,000 c 4.18 Devil's Elbow Lift Station Elimination $50,000 $50,000 `" 4.19 Lake Washington Blvd.Sewer(2900 Block) $70,000 $70,000 No 4.20 Summerwind Lift Station Rehabilitation $200,000 $200,000 NO 4.21 Lake Washington Beach Uft Station Rehabilitation $150,000 $150,000 4.22 Lake Washington No 2 Uft Station Rehabilitation $150,000 $150,000 5113/99/3:02 PM :,. t t. 1 . ., L_ . , 1 t.. ; I t i : t t t. t , , U-4 I, ,.,.', t,. . te4.,. I I I I I I I I I I I I I I I I 1 I I o� TABLE VI-5:FUNDING SOURCES FOR PROPOSED IMPROVEMENTS (Note:Project Cost Estimates are in 1998 dollars.) 1:—.1 PROJECT PROPOSED CITY SHARE CITY SHARE e NUMBER CAPITAL IMPROVEMENTS (RATES) (ASSESS DIST) LID/DEVELOPER KING COUNTY TOTALS BLACK RIVER BASIN 5.01 Oakesdale Avenue Connections $100,000 $100,000 5.02 South Renton Sewer Replacement Phase II $2,000,000 $2,000,000 5.03 Renton Hill Sewer Replacement $3,000,000 $3,000,000 5.04 Talbot Hill Sewer Replacement $3,640,000 $3,640,000 5.05 Talbot Crest Lift Station Replacement $250,000 $250,000 5.06 Thunder Hill Interceptor Replacement $2,200,000 $2,200,000 5.07 East Valley Lift Station Rehabilitation $150,000 $150,000 5.08 Benson Road Interceptor $1,100,000 $1,100,000 5.09 SW 34th Street Interceptor Replacement $700,000 $700,000 5.10 Talbot Road Interceptor Replacement $800,000 $800,000 5.11 Lind Avenue Lift Station Rehabilitation $150,000 $150,000 LAKE WASHINGTON WEST BASIN 6.01 CBD Sewer Replacement Phase IV $2,200,000 $2,200,000 6.02 Earlington Lift Station Elimination $50,000 $50,000 6.03 Earlington Lift Station Replacement $250,000 $250,000 6.04 Earlington Hill Sewer Replacement $3,840,000 $3,840,000 6.05 West Hill Sewer Replacement $4,920,000 $4,920,000 6.06 Renton Avenue Interceptor $1,500,000 $1,500,000 6.07 North Earlington Collection System $4,120,000 $4,120,000 6.08 Airport Lift Station Rehabilitation $150,000 $150,000 MAY VALLEY BASIN 8.01 Misty Cove/Baxter Lift Station Replacement $250,000 $250,000 8.02 Denny's Lift Station Rehabilitation $150,000 $150,000 _ O 8.03 May Valley Interceptor Phase II $3,100,000 $3,100,000 5 ITOTAL ANNUAL COST $61,900,000 $6,480,000 $40,640,000 $3,100,000 $112,120,000 ,5' SOb oS m O L CA eLTI 5/13/99/3:02 PM I -_—__- - --- -_-_----- _ - -- -----_- --_ --- a �ff%ff54th M a 6 -___- ___ ____----------- f-.' ---------------_ _ ��1 N .}y�� qo 1 ------------------ 61hgf t ___--------------- __ -_____ —___ _— ____—_ _—__ ___ ______ ______ _= E h SE 56th St o ----____--_------=-- - c ---—_-_-_----_-- _ --------------- -------------------_--__- �a S th t h try v� v D __-- —_-_ _ ----_ - _—_-_ _ —_- a i\ SE 59th St _—_____ _ _ _—___ _-__= SE 0 t Q S 6 SE 60th St fBgthSf y — - — - _ - = --- — - __ - _ - _ _ - v �1�� J SE 60th St D - _ _ E 61st t N N h St SE 61st St -------- - --- _--_ --------_- ` a -- ------ - a Sf S - _-_---_---_- _-__-_-_------- ; SE61stS 9? __ _-_-----__ -- 61s St -- - - - - - - - - - - - - - - - ---_-_-_ _-_- _- -_-_-_ _-_- - - -_-_-_- - S 6ynd M _n ------------_----_- ----- ``Y £ 9'10 --------------- - St g u ¢ N n =__--__--__________— ___________-___� m`o SE 62nd St m _ __ ________ __ __ ¢' o °'----_-_------_-_--_--_-- -_-_-- ------ _-- _ -- - ---------_ -- --_-----_ 6th St ----- S€64th St SE 64th St S _ ------- - - - -- SE thPl J — _ _ _ _ _- —_ _—__ _ - _ ___ _ ___ ___________ _ _ - —_ _ __ _� it kir it kir" CH�?�'TER VII OPERATION ... MAINTENANCE Ur j� _ ll *1111„..1:11,, ,. 51 ililli'' '''''"7:( ' DtreKI • /r '' � � , D i I % ///4�' '� y � , k•, , - Iran, IV 1.\i• . ,i, _ , ._ gi a W e � �` Ai,r /__ mu. , y ill / r ',/i, _•-,--='----->'''-i• uiP i 1 L all be N44N, 40'...."-,' / c I Jill d -i---. 1 III IP r --- —�' rr +.r rr CHAPTER VII OPERATION AND MAINTENANCE A. SANITARY SEWER SYSTEM OPERATION The City's comprehensive maintenance program allows optimization 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 "" Duties involved with running the Wastewater Utility are divided into operation and maintenance programs. These programs are discussed in the following sections. 1. OPERATIONS a. ROUTINE OPERATIONS Routine operation of the sanitary sewer utility is a combination of interaction between the Wastewater Utility Section (located in City Hall) and the Wastewater Operation and Maintenance „r Section (located in the City Shop Facility). Routine operations involve the analysis, formulation, and implementation of procedures to ensure w that the sanitary sewer facilities are functioning efficiently. The utility's maintenance procedures o work well.Repairs are 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 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. b. EMERGENCY OPERATIONS Emergency operations are the unplanned and unscheduled tasks needed to keep the system in operation. This would include responding to sewer blockages, pipes broken by construction, and damage to the system by acts of nature. All of the maintenance staffs are also available to aid any of the other sections with additional manpower or equipment. The Wastewater Maintenance staff also has the responsibility to keep the system operating when there are power or mechanical failures at lift stations. Renton's telemetry system allows for 24-hour IOW remote monitoring and access to the system by the crew. With this access, they can be alerted to a problem and correct it remotely, determine that it can wait until the next shift, or mobilize the necessary manpower and equipment. 1111111 05/17/99 7-1 ar CHAPTER SEVEN c. ORGANIZATIONAL STRUCTURE U The sewer utility operates under the direction of the Administrator of Planning, Building and Public Works. The Wastewater Maintenance Supervisor reports to the Maintenance Services Director. The Wastewater Utility Engineering Supervisor reports to the Utility Systems Director. The Utility Systems Director and the Maintenance Services Director report to the Administrator of Planning, Building and Public Works. wr The Wastewater Maintenance staff is responsible for the upkeep of both the sanitary sewer and storm water systems. The Wastewater Maintenance Supervisor evenly divides his duties, overseeing the operation and maintenance of both systems. There are five Maintenance Services workers responsible for the operation of the sanitary sewer system. The primary responsibility of two of these workers is lift stations. w The Wastewater Utility staff is responsible for design and management of capital improvement projects, coordination of developer extensions of the sewer system, and long range planning for the Utility. The Wastewater Utility Supervisor oversees the Wastewater Utility staff. The Wastewater so Utility staff consists of two engineering project managers. All three members of the Wastewater Utility are involved in project management and coordination. d. TRAINING 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 up (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 must be continued. so 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. mo 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 with pay commensurate to the category. It is essential that the promotional program continue to be closely linked with the training program, not only because it promotes efficient operation, but also because mandatory certification of wastewater utility workers is required by the state. The State Department of Health stipulates qualifications and training requirements for obtaining and maintaining certification. The City Council and Administration have approved expenditures for training with the result of maintaining proficiency levels in the last five years. U 7-2 05/17/99 U 1110 flill OPERATION AND MAINTENANCE e. 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 4910 Cellular Telephones Electronic Pagers Regularly kept work logs Regular inspection reports Daily work assignment meetings 411110 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 II. facility operation and maintenance manuals are available for staff reference. City staff has 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. f. EQUIPMENT AVAILABILITY Sewer maintenance staff is equipped primarily with City-owned 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-1 with a description of their primary use in the department. A description of each vehicle and its uses oi• 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. 05/17/99 7-3 vie CHAPTER SEVEN Table VII- 1: Wastewater Utility Department Equipment (1998) ROLLING STOCK 0111 Vehicle# Year Vehicle Description C-75 1976 Utility TV inspection unit D-84 1987 Lift station utility truck D-82 1987 Manhole and line service truck E-93 1986 Vac-Con high velocity sewer jet and vacuum .ire S-165 1976 NYghanical rodding OTHER EQUIPMENT Amount Equipment Description 3 Emergency generators 2 Wacker compactors 1 3-inch trash pump 4 Trash diaphragm pumps 1 Chain saw 1 Set of emergency lighting frio Utilities TV Inspection Unit(Equipment#C-75) This unit is a self propelled closed-circuit color TV system used for inspecting 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 TV van is an important part of the maintenance program to help WO determine priority areas that require further attention and maintenance. Lift Station Utility Truck(Equipment#D-84) The lift station crew uses this vehicle for inspection, maintenance and repair of sewer pump stations. It is equipped with a crane used for lifting pumps and equipment as needed ands+ utility compartments for parts,tools, etc. This vehicle is also used to transport the emergency generator(s) and to assist with other maintenance and emergency procedures as needed. lie Manhole and Line Service Truck(Equipment#D-82) The line crew uses this vehicle for inspection and repair of manholes and lines. It carries do 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. This vehicle can also be used to transport the mechanical rodder and emergency generator(s). 7-4 05/17/99 w 1110 OPERATION AND MAINTENANCE Vac-Con High Velocity Sewer Jet and Vacuum Unit Equipment(Equipment#E-93) The Vac-Con 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, and dirt) from the lines that IMP 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 Vac-Con to flush water through these particular lines periodically to prevent those conditions from occurring. The Vac-Con is the primary equipment used for emergency blockages in the lines and is used to assist TV inspection by setting cables when needed. 1101 Mechanical Rodding Machine(Equipment#S-165) 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. ww These particular lines are rodded periodically to ensure there is no interruption of flow. g. RECORDS sow 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, 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. 11. 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 CAD map of the sanitary sewer system that is useful to the operations and maintenance staff. These utility maps,printed in 1"=400' books and 1"=800' wall maps, show the sanitary sewer size and location, manhole location and number, cleanout location and number, and lift station and INF force main locations. The City has also developed a database inventory of the sewer system that links the CAD maps and the as-built drawings. As-built drawings of much of the existing sanitary sewer system and private side sewers are kept on file in the Utility Systems Division at City Hall. This information is available in both hard copy and as scanned images available to be viewed on a computer. The operation and maintenance staff uses this data to provide location information for sanitary sewer lines and service connections. Plat maps .. or construction drawings for new sanitary sewer extensions within the distribution system should continue to be kept for the sanitary sewer system and added to both the CAD and database systems. WO • 10/ 05/17/99 7-5 eer CHAPTER SEVEN 2. MAINTENANCE a. PREVENTIVE MAINTENANCE Preventive maintenance uses planned and scheduled activities to ensure smooth, continuous operations of equipment and facilities. Maintenance schedules that meet or exceed manufacturer's recommendations should be established for all critical components in the sanitary sewer system. The City's new sewer telemetry system provides automated data collection and record keeping of lift station functions. Physical inspections of the stations are still an important tool in maintaining the system. b. CORRECTIVE MAINTENANCE Corrective maintenance is that which improves the performance of existing equipment, facilities and infrastructure. c. SUGGESTED MAINTENANCE SCHEDULE S The following schedule should be used as a minimum for preventive and corrective maintenance: Sewage Lift Stations Daily: Check system set points and levels; check radio telemetry for failures; program stations as necessary. 410 Weekly: Check security; log and record pump motor hours; check motor noise, temperature, and vibration. Monthly: Change all filters; clean electrodes; exercise all valves; run all emergency generators. Semiannually: Change motor oil; observe and record motor current draw; check packing. Annually: Check pump bearings and seals; infrared testing of the system; test entire electrical system at each station As Needed: Recoat structures and piping; maintain electrical and hydraulic controls. Wet Well Facilities Weekly: Check security: Check float settings and operation. Monthly: Wash down each wet well; check interior condition, ladder,hatches, etc., so in wet well. Annually: Pump down and clean all wet wells As Needed: Recoat interior as needed in wet well (estimated 10- to 15-year frequency). S 7-6 05/17/99 OPERATION AND MAINTENANCE 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 a. 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). b. Tools As Needed: Clean after each use; lubricate and maintain as necessary. ii" C. STAFFING The preventive maintenance procedures, corrective maintenance procedures, routing operations, and 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 described in section B of this chapter. There are at present 5.5 full time employees, including supervisory personnel and maintenance workers, who operate and maintain the „i, sanitary sewer system. The tasks that are performed by sewer utility staff include inspection, testing, installation and repair of system facilities and preventive maintenance, corrective maintenance, record keeping, administrative tasks,training,and response to emergencies. The hours of work required to adequately maintain the sanitary sewer system are shown in TABLE VII-2. For preventive and corrective maintenance, the annual hours total 8,842. The hours of work required for operational tasks for the sanitary sewer system are shown in TABLE VII-3. For operational tasks, the annual hours total 2,627. For adequate maintenance of the sanitary sewer system, the City would need a total of approximately 11,469 hours worked per year. NO SO NO 05/17/99 7-7 i CHAPTER SEVENiii Table VII-2; STAFFING TIME FOR PREVENTIVE MAINTENANCE" iiii FACILITY FREQUENCY OF TIME REQUIRED OR EQUIPMENT MAINTENANCE QUANTITY PER YEAR vii Lift station inspection Twice per week 21 L.S. 1,092 hours Lift station maintenance Annually 21 L.S. 1,575 hours No Sewage pump and motor maintenance Annually 42 pumps 1,428 hours Manhole inspection om and maintenance Semiannually 3750 manholes 1,625 hours Video inspection Annually 24,000 LF. 256 hours ow Root cutting Semiannually 19,200 LF. 410 hours Grease removal Annually 24,000 LF 349 hours stilimill a Hydraulic line cleaning Annually 100,000 LF 1,067 hours Repair sewers and clear plugs Annually 30 repairs 240 hours "' Easement& road maintenance Annually 24,000 LF 800 hours TOTAL FOR PREVENTIVE MAINTENANCE 8,842 hours TABLE VII-3: STAFFING TIME FOR OPERATION TASKS FACILITY OR TASK TIME REQUIRED EQUIPMENT FREQUENCY TIME PER ACTIVITY PER YEAR Administrative duties Daily 5 Manhours/Day 1,300 hours Tool and equipment cleaning Once per week 5 Manhours/Week 260 hours Staff meetings l and cleanup Daily .05 Manhour/FTE 715 hours Training and conferences Annually 8 Days/FTE 352 hours TOTAL FOR OPERATIONS 2,627 hours a au r 7-8 05/17/99 ii ■r OPERATION AND MAINTENANCE If due consideration is given to the hours involved in vacation,holiday, and illness, then the total number 110 of hours actually available for performing the work of operation and maintenance diminishes to a level of approximately 1,750 hours per year per crew member. At this rate, a full-time maintenance staff of 6.5 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 Division 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 diminished levels of service for all maintenance programs. 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 deferred. When routine, regular preventive maintenance tasks are reduced, ,,,, breakdowns result, increasing both breakdown maintenance and excessive reliance on expensive standby equipment and contracted services required to resolve emergencies. Regular performance of all necessary work in the Wastewater Utility Operation and Maintenance si 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 five to six maintenance workers to meet today's requirements while continuing to share the supervisor position with Surface Water Maintenance. This addition to the staff will create the adequate number of crew hours necessary to carry the full workload of the Utility without neglecting preventive maintenance, emergency preparedness, or safety precautions. Further staff increases should be tied to the actual growth of the sewer system. 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 NIP The current engineering staff organization is described in section B of this chapter. Currently the Wastewater Utility has 3 full-time employees (FTE's) involved in engineering tasks. 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-4. The number of hours required for each task is not easily defined; therefore, workloads have been estimated based on a full-time employee(FTE). Administrative tasks require approximately 1.15 FTE's. rrr 05/17/99 7-9 a CHAPTER SEVEN TABLE VII-4 also shows the capital improvement projects that are proposed for 1999. These projects require approximately 1.7 FTE's. The total time required to perform all the tasks that the City is currently performing is approximately 2.85 FTE's. With consideration given to time lost to holidays, vacation, illness, and training,the current staffing level of 3 FTE's is adequate to complete current tasks. Most of the capital improvement projects identified in the 1992 Comprehensive Sewer Plan were completed. The primary reason for the City's ability to carry out a capital improvement program is the a current engineering staff provided to design and manage the projects. 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 1.0 FTE's. This rr will bring the total staffing requirements for both administrative tasks and capital improvement projects up to 4.0 FTE's. 3. DEPARTMENTAL COORDINATION The Wastewater Utility utilizes the expertise in other City departments, according to inter-departmental agreements, to augment the Wastewater Utility's expertise. The Finance and Information Services Department is responsible for customer billing, payment collection, project cost reporting, fund activity reporting, and basic computer needs. The Human Resources and Risk Management Department is responsible for employee records, union labor negotiations, salary schedules, and risk management evaluation. Within the Planning / Building / Public Works Department, the Wastewater Utility also utilizes the services of the Development Services and Technical service Divisions. Development Services provides plan review, permit issuance and inspection for developer extensions. They also provide inspection service for the Utility's Capital Improvement Projects. Technical Services provides support to Wastewater through Mapping and Property Services. This includes CAD mapping, development of the City's geographic information system, surveys,and property management. a a a a 7-10 05/17/99 OPERATION AND MAINTENANCE ■ TABLE 4: WASTEWATER UTILITY ENGINEERING STAFF TIME ENGINEERING TASKS 1111 Section Supervision 0.20 FTE's ar Latecomer's Agreement Administration 0.10 FTE's Plan Review Support 0.30 FTE's Comprehensive Sewer Plan Update 0.20 FTE's Customer Service Support 0.10 FTE's Support to Other Divisions/Departments/Agencies 0.25 FTE's TOTAL ADMINISTRATIVE TINE 1.15 FTE'S MAJOR CAPITAL IMPROVEMENT PROJECTS Kennydale Lake Line 0.30 FTE's Windsor Hills Sewer Replacement 0.30 FTE's Highgate Lift Station Elimination 0.20 FTE's Misty Cove/Baxter Lift Station Replacements 0.20 FTE's South&North Highlands Sewer Replacements 0.30 FTE's Ridgecrest Sewer Replacement 0.20 FTE's Infiltration and Inflow Program 0.20 FTE's TOTAL CIP TIME 1.70 FTE'S TOTAL.ENGINEERING TIME 2.85 "1'E'S FTE's=Full Time Employees WO MO 05/17/99 7-11 ill r_ 1111 CHAPTER VIII . ,...,.,...„,..,:.,,,,,,,„:„.„„,,,t,...„:„................ . FINANCIAL ANALYSIS is iii . , .. 66 . ... . . _.. ... .., . . „ . . . ,., ..... ,..... .. , . . .. ... . . ,rr,..., .. ,,. ii .. , .. . .., ,. ._ ..... . , ..., ., ........ .,,,.,..,„:., .„.. ......, ,..: . . , . f ..,... - , . . . . , . .. _ . . . . ,„ . . „. . . . . . .,, . . , . , ... _,.. ail ._„ ..... ..,...., , . ___ ... ,.. :... __.:. . _._ ill ..... . _ ._.......... tr. ... ii. lis k ism ill 1st Ole CHAPTER VIII FINANCIAL ANALYSIS A. INTRODUCTION INNThis 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 AIM Chapter 4 and the service needs that will result from anticipated growth. This chapter also presents a financial analysis of the wastewater utility that identifies its historical and projected future expenses and compares them to available and projected revenues in order to determine the necessary rate adjustments. 4111" A utility rate model that evaluated the operation of the 401 and 421 funds and made specific rate recommendations was completed as part of the 1992 Long-Range Wastewater Management plan. This model was based upon a 1989 rate study (Water and Wastewater Rates Management Analysis, RH2 Engineering P.S.). The model was updated as part of the rate study adopted in 1994 (Comprehensive Rate Study, Water, Wastewater, and Surface Water Utilities, Economic and Engineering Services, Inc., January 1994). In this chapter two sets of numbers are used. Current 1998 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 3%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 KING COUNTY 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 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 must forecast future levels of 1) inflation, 2) customer service increases, 3) KING COUNTY 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 KING COUNTY 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 05/17/99 8-1 CHAPTER EIGHT FIGURE 10 that the majority of the operating costs are a direct result of KING COUNTY charges. The Wastewater Utility rate increase necessary to cover the operating costs is presented in TABLE VIII-1. 1. KING COUNTY CHARGES vat KING COUNTY charges for wastewater treatment and disposal. As part of its service contract with KING COUNTY, the City collects that charge from its customers through the utility billing division and passes it on to KING COUNTY. KING COUNTY has held its rates over the last three years. It is esi expected, however, that they will increase their rates slightly as King County implements its Regional Wastewater Services Plan over the next 20 years. KING COUNTY treatment services are forecast to increase at an average annual rate of 3%. 2. CITY OF RENTON OPERATIONS AND MAINTENANCE so a. COSTS The estimated costs to operate the wastewater utility include salary costs for the operation, ori maintenance, engineering and administration of services, taxes, office supplies,debt service, and consulting fees. The number of staff and the additional staff positions for Wastewater have been identified in Chapter VII. For purposes of this financial analysis, recommended staffing levels for operating the wastewater utility were predicted to be reached within this plan's six-year period in order to keep pace with anticipated growth. Inflation for labor is estimated to be 3% annually. Other • expenses are anticipated to increase at the estimated inflation rate of 3%. 1 err me a 8-2 05/17/99 a FINANCIAL ANALYSIS CITY'S REVENUE BREAKDOWN SUMMARY FIGURE 9 $5.0 ode • $4.0 ""' $3.0 REVENUE 2.50 2.51 2.51 2.51 (MILLIONS) 1.80 1.55 $2.0 $1.0 1.45 1.49 1.53 1.58 1.62 eft $0.0 1999 2000 2001 2002 2003 2004 YEARS ■City Operations I3 City Proposed CIP Revenue projection requirements based on proposed capital "w" improvements and operation and maintenance. 05/17/99 8-3 CHAPTER EIGHT TOTAL REVENUE REQUIREMENT SUMMARY "'' FIGURE 10 err $12.0 $11.0 $10.0 2.51 2.5'I $9.0 mr�- 2.50 2.51 $8.0 - 1.55 1.80 ® 1.58 1.62 $7.0 • REVENUE $6.0 ® 1.45 (MILLIONS) $5.0 $4.0 F 'stop $3.0a �� _ $2.0 $1.0y;ye T= r$0.0 ' 1999 2000 2001 2002 2003 2004 YEARS so 0 King Co. Revenues ■City Operations 0 City Proposed CIP .�r Revenue projection requirements based on proposed capital improvements and operation and maintenance. TABLE VIII-1: PROJECTED SANITARY SEWER RATE INCREASES FOR A SINGLE FAMILY RESIDENCE BASED UPON PROPOSED RECOMMENDATIONS IN THIS PLAN Year 1999 2000 2001 2002 2003 2004 Projected City Rate Increase 0.0% 0.0% 5.0% 7.5% 6.5% 5.5% City Charge $ 12.29 $ 12.29 $ 12.90 $ 13.87 $ 14.77 $ 15.58 Projected King Co. Rate Increase 0.0% 2.1% 3.5% 4.3% 3.5% 2.5% wrr King Co. Charge $ 19.10 $ 19.50 $ 20.19 $ 21.05 $ 21.79 $ 22.34 Total Projected mo Rate Increase 0.0% 1.3% 4.1% 5.5% 4.7% 3.7% Total Billing $ 31.39 $ 31.79 $ 33.09 $ 34.92 $ 36.56 $ 37.92 8-4 05/17/99 ■ii sw to FINANCIAL ANALYSIS N" CIP FINANCIAL ANALYSIS SUMMARY FIGURE 11 IWO ell Ft,$3.5 $3.0 2.5 I ow CIP COSTS $2.0 I $2.5 $2.5 $2.5 $2.5 (MILLIONS) $1.5 $1.8 .r $1.0 Total (Current Cost) -r $0.0Air/ / City Share(Current Cost) 1999 2000 2001 2002 2003 2004 w YEARS it rr Ili TABLE VIII-2: COMPREHENSIVE PLAN CIP COST COMPARISON 41110CURRENT COSTS INFLATED COSTS City's Share Total Project City's Share Total Project of CIP Costs Costs From of CIP Costs Costs From Year From This Plan This Plan From This Plan This Plan 1999 $ 1,545,000 $ 2,545,000 $ 1,591,350 $ 2,621,350 2000 $ 1,795,000 $ 2,795,000 $ 1,902,700 $ 2,962,700 we 2001 $ 2,500,000 $ 3,500,000 $ 2,725,000 $ 3,815,000 2002 $ 2,505,000 $ 3,505,000 $ 2,805,600 $ 3,925,600 2003 $ 2,505,000 $ 3,505,000 $ 2,805,600 $ 4,030,750 INN 2004 $ 2,505,000 $ 3,505,000 $ 2,880,750 $ 4,135,900 Current Costs= 1998 Dollars Inflated Dollars=Assume 3% annually low 05/17/99 8-5 err CHAPTER EIGHT ow b. REVENUE REQUIREMENTS For purposes of the financial analysis, the estimated revenue requirements for the next six years (1998 to 2004)were based on the 1997 operating budget 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 six-year CIP recommended in this Plan. up 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). FIGURE 11 graphically presents the information provided 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 ,ice 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 that 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. Renton also utilizes Public Works Trust Fund Loans from the State as a source of funds. These loan agreements also require that the City meet similar rate standards as described above for bonding. 8-6 05/17/99 err FINANCIAL ANALYSIS 2. REVENUE SOURCES FOR CIP NW 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 r determine the rate adjustments necessary to accomplish the CIP. Those costs will be recovered from customers based on their specific degree of benefit. ,W 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. rr 1) Revenue Bonds Revenue bonds are issued and sold by the City when large amounts of money are needed Yrr 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 IMP 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." 2) General Obligation Bonds The City has the authority to levy a tax (subject to a vote of the people) that could be SW 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. rr IMP err 05/17/99 8-7 tor oro TABLE VIII-3:COST BREAKDOWN FOR PROPOSED IMPROVEMENTS C�7,, PROJECT PROPOSED CARRY 1999 2000 I 2001 I 2002 I 2003 ( 2004 FUTURE NUMBER CAPITAL IMPROVEMENTS FORWARD Note:Project Cost Estimates are In 1998 dollars. TOTALS 'b ti PRIORTY A PROJECTS Lx1 1.01 Miscellaneous Sewer Replacement $100,000 $100,000 $100,000 $100,000 $100,000 $100,000 $600,000tti 1.02 Lift Station Electrical Rehabilitation $25,000 $25,000 Li 1 1.04 GIS Database and Conversion $30,000 $20,000 $20,000 $5,000 $5,000 $5,000 $5,000 $30,000 $120,000 x 4.05 Kennydale Lakefront Sewer Replacement $75,000 $1,500,000 $1,575,000 y 4.07 Highgate Lift Station Elimination $300,000 $300,000 5.01 Oakesdale Avenue Connections $100,000 $100,000 5.02 South Renton Sewer Replacement Phase II $1,400,000 $600,000 _ $2,000,000 5.05 Talbot Crest Lift Station Replacement $50,000 $200,000 $250,000 6.03 Earlington Lift Station Replacement $50,000 $200,000 $250,000 8.01 Misty Cove/Baxter Lift Station Replacement $50,000 $200,000 $250,000 PRIORTY B PROJECTS 1.03 Sanitary Sewer Grouting and Rehabilitation $100,000 $100,000 $100,000 $100,000 $1,500,000 $1,900,000 1.05 Long-Range Wastewater Management Plan $100,000 $100,000 2.01 Windsor Hill Sewer Replacement $630,000 $620,000 $350,000 $1,600,000 3.01 East Cedar River Collection System $1,000,000 $1,000,000 $1,000,000 $1,000,000 $500,000 $29,500,000 $34,000,000 3.02 Central Plateau Interceptor $200,000 $1,500,000 $1,700,000 3.03 East Plateau Interceptor $1,700,000 $1,700,000 4.01 North Highlands Sewer Replacement $100,000 $500,000 $500,000 $1,400,000 $1,200,000 $7,700,000 $11,400,000 4.02 Ridgecrest Sewer Replacement $100,000 $100,000 4.03 South Highlands Sewer Replacement $100,000 $500,000 $800,000 $800,000 $580,000 $2,760,000 4.06 Presidents Park Sewer Replacement Ph I $2,000,000 $2,000,000 4.19 Lake Washington Blvd.Sewer(2900 Block) $70,000 $70,000 5.07 East Valley Lift Station Rehabilitation $50,000 $100,000 $150,000 6.06 Renton Avenue Interceptor $1,500,000 $1,500,000 PRIORTY C PROJECTS 2.04 Falcon Ridge Lift Station Rehabilitation $150,000 $150,000 4.04 North Renton Sewer Replacement Phase I $300,000 $320,000 $620,000 4.08 North Renton Sewer Replacement Phase II $580,000 $580,000 5.03 Renton Hill Sewer Replacement $3,000,000 $3,000,000 5.04 Talbot Hill Sewer Replacement $3,640,000 $3,640,000 6.01 CBD Sewer Replacement Phase IV $2,200,000 $2,200,000 6.02 Earlington Lift Station Elimination $50,000 $50,000 6.04 Earlington Hill Sewer Replacement $3,840,000 $3,840,000 c 6.07 North Earlington Collection System $4,120,000 $4,120,000 j 8.02 Denny's Lift Station Rehabilitation $150,000 $150,000 J_ 1 '1919919:43 AM II . t t 1 t,, t I I t 1 i I t IL t 1. t t 1 I I 1 4 ' 0 TABLE VIII-3:COST BREAKDOWN FOR PROPOSED IMPROVEMENTS v PROJECT PROPOSED CARRY 1999 2000 I 2001 I 2002 I 2003 I 2004 FUTURE NUMBER CAPITAL IMPROVEMENTS FORWARD Note:Project Cost Estimates are in 1998 dollars. TOTALS PRIORTY D PROJECTS 4.09 Honeydew Sewer Replacement $1,420,000 $1,420,000 4.11 Duvall Ave NE Sewer Main Extension $260,000 $260,000 4.13 Sierra Heights Collection Sewers Phase II $1,820,000 $1,820,000 4.20 Summerwind Lift Station Rehabilitation $200,000 $200,000 4.21 Lake Washington Beach Lift Station Rehabilitat $150,000 $150,000 5.06 Thunder Hill Interceptor Replacement $2,200,000 $2,200,000 5.11 Lind Avenue Lift Station Rehabilitation $150,000 $150,000 6.05 West Hill Sewer Replacement $4,920,000 $4,920,000 6.08 Airport Lift Station Rehabilitation $150,000 $150,000 PRIORTY E PROJECTS 2.02 Falcon Ridge Lift Station Elimination $700,000 $700,000 2.03 Cottonwood Lift Station Rehabilitation $150,000 $150,000 4.10 Aberdeen Ave NE Sewer Main Ext.(12th to 24ti $880,000 $880,000 4.12 Union Ave NE Sewer Main Extension $440,000 $440,000 4.14 Presidents Park Sewer Replacement Phil $6,400,000 $6,400,000 4.15 Sunset NE Sewer Replacement(N 4th to Park P $1,580,000 $1,580,000 4.16 North Renton Interceptor Replacement $1,000,000 $1,000,000 4.22 Lake Washington No 2 Lift Station Rehabilitatio i _ $150,000 $150,000 5.08 Benson Road Interceptor $1,100,000 $1,100,000 5.10 Talbot Road Interceptor Replacement $800,000 $800,000 PRIORTY F PROJECTS 4.17 Honey Creek Interceptor Phase IV $1,000,000 $1,000,000 4.18 Devil's Elbow Lift Station Elimination $50,000 $50,000 5.09 SW 34th Street Interceptor Replacement $700,000 $700,000 8.03 May Valley Interceptor Phase II $3,100,000 $3,100,000 'TOTAL ANNUAL COST I $1,880,000 $1,450,000 $2,720,000 $3,425,000 $3,505,000 $3,505,000 $3,005,000 $92,630,000 I$112,120,000 FUNDING SOURCE BREAKDOWN BY YEAR (See table VI-5 for funding source breakdown by project) City Share(Rates) $1,880,000 $1,450,000 $1,720,000 $2,425,000 $2,505,000 $2,505,000 $2,505,000 $50,310,000 $65,300,000 City Share(Assessment Districts) $3,080,000 $3,080,000 Local Improvement Districts/Developer Extens $1,000,000 $1,000,000 $1,000,000 $1,000,000 $500,000 $36,140,000 $40,640,000 King County $3,100,000 $3,100,000 Total ' $1,880,000 $1,450,000 $2,720,000 $3,425,000 $3,505,000 $3,505,000 $3,005,000 $92,630,000 $112,120,000 00 ,03 ti 19/99/9:41 AM CHAPTER EIGHT 3) Public Works Trust Fund Loans tki 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 to 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's service area. This includes areas that are currently developed on private septic systems. b. OTHER REVENUE SOURCES FOR CIP This section presents the anticipated funding for the CIP from sources other than rate 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 for projects that meet its criterion. ++ 2) King County KING COUNTY funds are available for the construction of interceptors and local service extensions if the investment can be justified. Currently KING COUNTY limits its investment to projects where the amortized capital cost of the project can be recovered through KING COUNTY fees collected from the residential customer, or equivalent, that are served by the extension at the time of project completion. Based on this policy, KING COUNTY could construct the May Valley Interceptor and other di improvements. Oki 3) LID(Local Improvement District)Assessments LID assessment income is paid to the City from assessments levied against specific properties that have benefited 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 8-10 05/17/99 't' FINANCIAL ANALYSIS sufficient number of signatures on petitions, a local improvement 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 benefited properties 100 percent of the cost of the improvements plus the general facilities and sewer connection charges. Wr. 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 M■ until a later date when the area needs or desires it. b) Improvements of Regional Interest These projects 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. wr 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,where such agreements exist. 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 Wastewater Utility sii Engineer. .ir 05/17/99 8-11 imi CHAPTER EIGHT 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. a 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 a 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. 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 the implementation of the CIP that these funds are 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 approximately 40% of the total wastewater utility budget; KING COUNTY 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. These 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 24.5%over the next six years. This is equivalent to an average annual rate increase a of approximately 4.1%per year. a 8-12 05/17/99 a FINANCIAL ANALYSIS The rate increases depend on several factors that 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 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. • 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 WV 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. WN INN 05/17/99 8-13 Appendix A Sewage Lift Station Data Sheets ul kis lj ui j L L L tam +�• SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Airport LOCATION 500 West Perimeter Road/Airport CONSTRUCTED 1986 STATUS Active REHABILITATED PROJECT WWP-27-1688 PUMP AND MOTOR DATA PUMP NUMBER 1 2 MANUFACTURER S & L S & L MODEL NUMBER 4B2B 4B2B +�+ FLOW RATE (GPM) 100 100 T.D.H (FEET) 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 rrr LENGTH 195 LF SIZE 4" DI LIFT STATION CONSTRUCTION DESCRIPTION Wet well mounted lift station (Smith & Loveless Design) with fiberglass enclosure SN 15-2445 +r. EMERGENCY POWER CONNECTION Yes HEATING Yes CONTROL Transducer / Floats NIP VENTILATION Yes TELEMETRY Yes E:\COMP_96_LS_LIST.DOC I MAB(10/29/98) rrr eit SEWAGE LIFT STATION DATA SHEET "'ii LIFT STATION NAME Azalea Lane iii LOCATION 2310 Aberdeen Ave NE CONSTRUCTED 1979 STATUS Active wri REHABILITATED PROJECT WWP-27-1687 iii PUMP AND MOTOR DATA PUMP NUMBER 1 2 MANUFACTURER S & L S & L "W MODEL NUMBER 4B2B 4B2B FLOW RATE (GPM) 251 251 Si T.D.H (FEET) 44 44 ski MOTOR NUMBER 1 2 iti MANUFACTURER S & L S & L MODEL NUMBER 11954-XX2978 11954-XX2978 Ili HORSE POWER 7.5 7.5 VOLTAGE 120/208 120/208 R.P.M/PHASE 1800/3 1800/3 " ` FORCE MAIN DATA iiii LENGTH 1250 LF SIZE 6" PVC LIFT STATION CONSTRUCTION liiiiiiiii.*: DESCRIPTION Wet well mounted lift station (Smith & Loveless design) with fiberglass enclosure EMERGENCY POWER CONNECTION Yes HEATING Yes CONTROL Transducers / Float VENTILATION Yes TELEMETRY Yes E:\COMP_96_LS_LIST.DOC I MAB(10/29/98) 2 Ia +rr ++■ SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Baxter LOCATION 5015 Lake Washington Blvd. North CONSTRUCTED 1974 STATUS Active IWO REHABILITATED PROJECT WWP-27-0163 ""` PUMP AND MOTOR DATA PUMP NUMBER 1 2 MANUFACTURER A & C A& C MODEL NUMBER NSWV NSWV FLOW RATE (GPM) 400 400 T.D.H (FEET) 23 23 .rr MOTOR NUMBER 1 2 MANUFACTURER A & C A & C MODEL NUMBER 400 400 HORSE POWER 3 3 VOLTAGE 230/460 230/460 'i" R.P.M/PHASE 865/3 865/3 FORCE MAIN DATA r LENGTH 168 LF SIZE 8" CI LIFT STATION CONSTRUCTION DESCRIPTION Recessed wet well mounted lift station Stacked wells EMERGENCY POWER CONNECTION Yes HEATING No CONTROL Transducer / Floats taw VENTILATION Yes TELEMETRY Yes OW IMO E:ICOMP_96_LS_LIST.DOC I MAB(10/29/98) 3 wr SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Boeing No LOCATION 800 Park Ave N CONSTRUCTED 1997 STATUS Active REHABILITATED PROJECT WWP-27-2221 PUMP AND MOTOR DATA lit PUMP NUMBER 1 2 MANUFACTURER Flight Flight MODEL NUMBER CP-3085x-434 CP-3085x-434 FLOW RATE (GPM) 325 325 T.D.H (FEET) 20 20 MOTOR NUMBER 1 2 MANUFACTURER Flight Flight ei MODEL NUMBER CP-3085x-434 CP-3085x-434 HORSE POWER 3 3 VOLTAGE 230/460 230/460 R.P.M/PHASE 860/3 860/3 FORCE MAIN DATA LENGTH SIZE 6" DI LIFT STATION CONSTRUCTION DESCRIPTION Submersible orti EMERGENCY POWER CONNECTION Yes oil HEATING No CONTROL Transducer / Floats VENTILATION Yes TELEMETRY Yes 1110 E:\COMP_96_LS_LIST.DOC MAB(10/29/98) 4 ar SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Cottonwood IMO LOCATION 2003 Maple Valley Highway CONSTRUCTED 1994 STATUS Active REHABILITATED PROJECT WWP-27-0510 PUMP AND MOTOR DATA PUMP NUMBER 1 2 MANUFACTURER Hydromatic Hydromatic MODEL NUMBER S-13838 S-13838 r FLOW RATE (GPM) 230 230 T.D.H (FEET) 32.5 32.5 MOTOR NUMBER 1 2 MANUFACTURER Hydromatic Hydromatic MODEL NUMBER S 4 NX 500 JC S 4 NX 500 JC HORSE POWER 5 5 VOLTAGE 230/460 230/460 R.P.M/PHASE 1750/3 1750/3 FORCE MAIN DATA LENGTH 100 SIZE 6" LIFT STATION CONSTRUCTION DESCRIPTION Submersible " Fiberglass wet well EMERGENCY POWER CONNECTION Yes HEATING No CONTROL Transducer / Floats �.. VENTILATION Yes TELEMETRY Yes 91.0 E:\COMP 96_LS_LIST.DOCIMAB(10/29/98) 5 a SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Denny's a LOCATION 4750 Lake Washington Blvd. CONSTRUCTED 1983 STATUS Active REHABILITATED PROJECT WWP-27-0339 PUMP AND MOTOR DATA PUMP NUMBER 1 2 MANUFACTURER Paco Paco MODEL NUMBER 470 470 FLOW RATE (GPM) 100 100 vrr T.D.H (FEET) 35 35 MOTOR NUMBER 1 2 MANUFACTURER Cascade Cascade a MODEL NUMBER 5K184DL20239A 5K184DL20239A HORSE POWER 5 5 VOLTAGE 230/460 230/460 R.P.M/PHASE 1735/3 1735/3 FORCE MAIN DATA LENGTH 485 LF SIZE 4" PVC to LIFT STATION CONSTRUCTION DESCRIPTION Wet well mounted lift station (Smith and Loveless Design) with fiberglass enclosure EMERGENCY POWER CONNECTION Yes a HEATING Yes CONTROL Transucer / Floats VENTILATION Yes TELEMETRY Yes S S E:\COMP_96 LS_LIST.DOCIMAB(10/29/98) 6 a rr �•. SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Devil's Elbow LOCATION 3001 NE 27th Street SW CONSTRUCTED 1985 STATUS Active REHABILITATED PROJECT WWP-27-1431 'r' PUMP AND MOTOR DATA PUMP NUMBER 1 2 MANUFACTURER Clow-Yeomans Clow-Yeomans MODEL NUMBER 4312-6260 4312-6260 �•+ FLOW RATE (GPM) 400 400 T.D.H (FEET) 157 157 "rr MOTOR NUMBER 1 2 MANUFACTURER Baldor Baldor MODEL NUMBER CM2539T CM2539T HORSE POWER 40 40 VOLTAGE 230/460 230/460 "I" R.P.M/PHASE 1760/3 1760/3 FORCE MAIN DATA wr LENGTH 2150 LF SIZE 8" PVC LIFT STATION CONSTRUCTION DESCRIPTION Wet well mounted lift station with fiberglass walk-in building `•• Force main is abandoned water main EMERGENCY POWER CONNECTION Yes err HEATING Yes CONTROL Transducer / Floats VENTILATION Yes TELEMETRY Yes Wr "r E:\COMP_96_LS_LIST.DOC(MAB(10/29/98) 7 til SEWAGE LIFT STATION DATA SHEET ao LIFT STATION NAME Earlington School LOCATION 8055 South Langston CONSTRUCTED 1969 STATUS Active REHABILITATED PROJECT WWP-27-0137 PUMP AND MOTOR DATA PUMP NUMBER 1 2 MANUFACTURER S & L S & L 'r' MODEL NUMBER 4B3 4B3 FLOW RATE (GPM) 150 150 T.D.H (FEET) 30 30 ado MOTOR NUMBER 1 2 MANUFACTURER S & L S & L MODEL NUMBER 3Y226041A1 CU 3Y226041A2 CU HORSE POWER 5 5 to VOLTAGE 230/460 230/460 R.P.M/PHASE 860/3 860/3 FORCE MAIN DATA LENGTH 637 LF SIZE 6" CI 1111 LIFT STATION CONSTRUCTION DESCRIPTION Wet well/dry well lift station(Smith & Loveless Design) Oil with overflow bypass EMERGENCY POWER CONNECTION No HEATING No CONTROL Transducer VENTILATION Yes TELEMETRY Yes 11111 E:\COMP_96_LS_LIST.DOC I MAB(10/29/98) 8 tit rr SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME East Valley LOCATION 3400 East Valley Road CONSTRUCTED 1977 STATUS Active REHABILITATED PROJECT WWP-27-0200 PUMP AND MOTOR DATA PUMP NUMBER 1 2 tog MANUFACTURER Cornell Cornell MODEL NUMBER 4NNTRHVM5-6 4NNTRHVM5-6 FLOW RATE (GPM) 350 350 T.D.H (FEET) 22 22 tiii MOTOR NUMBER 1 2 MANUFACTURER GE GE MODEL NUMBER 5K6227XH2004A _5K6227XH2004A HORSE POWER 5 5 VOLTAGE 120/240 _ 120/240 rw R.P.M/PHASE 1150/3 1150/3 FORCE MAIN DATA LENGTH 80 LF SIZE 8" PVC .r LIFT STATION CONSTRUCTION DESCRIPTION Wet well/dry well lift station Electrical panel updated in 1996 EMERGENCY POWER CONNECTION Yes HEATING No CONTROL Transducer / Floats ■ VENTILATION Yes TELEMETRY Yes E:\COMP_96 LS_LIST.DOCIMAB(10/29/98) 9 SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Falcon Ridge a LOCATION 2471 SE 8th Street CONSTRUCTED 1981 STATUS Active a REHABILITATED PROJECT WWP-27-1453 PUMP AND MOTOR DATA a PUMP NUMBER 1 2 MANUFACTURER S & L S & L MODEL NUMBER 4B2B 4B2B FLOW RATE (GPM) 100 100 vii T.D.H (FEET) 101 101 MOTOR NUMBER 1 2 MANUFACTURER S & L S & L MODEL NUMBER 16055-XX2980 16055-XX2980 HORSE POWER 15 15 a VOLTAGE 230/460 230/460 R.P.M/PHASE 1800 1800/3 so FORCE MAIN DATA LENGTH 3217 LF SIZE 4" PVC a LIFT STATION CONSTRUCTION DESCRIPTION Wet well mounted lift station (Smith & Loveless Design) with fiberglass enclosure a EMERGENCY POWER CONNECTION Yes HEATING Yes CONTROL Transducer / Floats VENTILATION Yes TELEMETRY Yes a sir E:\COMP_96_LS_LIST.DOC I MAB(10/29/98) 10 a 41. SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Highgate to LOCATION 1733 NE 20th Street CONSTRUCTED 1979 STATUS Active REHABILITATED PROJECT WWP-27-0249 PUMP AND MOTOR DATA PUMP NUMBER 1 2 MANUFACTURER S & L S & L MODEL NUMBER 4B2B 4B2B FLOW RATE (GPM) 100 100 T.D.H (FEET) 35 35 MOTOR NUMBER 1 2 stv MANUFACTURER Marathon Marathon MODEL NUMBER JA-215TBDR7092BD- JA-215TBDR7092BD- �r WCW WCW HORSE POWER 3 3 .r. VOLTAGE 240/120 240/120 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 Transducer / Floats VENTILATION Yes TELEMETRY Yes E:\COMP_96_LS_LIST.DOC I MAB(10/29/98) 11 fits SEWAGE LIFT STATION DATA SHEET rr LIFT STATION NAME Honey Creek LOCATION 3501 NE 17th Place CONSTRUCTED 1969 STATUS Standby me REHABILITATED PROJECT WWP-27-0113 PUMP AND MOTOR DATA eao PUMP NUMBER 1 2 MANUFACTURER Paco MODEL NUMBER FLOW RATE (GPM) 100 rr T.D.H (FEET) 58 a 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 so Station is out of service EMERGENCY POWER CONNECTION No so HEATING No CONTROL Floats VENTILATION No TELEMETRY No so E:\COMP_96_LS_LIST.DOC I MAB(10/29/98) 12 w SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Lake Washington Beach LOCATION 1201 Lake Washington Blvd. North CONSTRUCTED STATUS Active REHABILITATED PROJECT WWP-27-0314 PUMP AND MOTOR DATA PUMP NUMBER 1 2 +w MANUFACTURER S & L S & L MODEL NUMBER 4B2B 4B2B FLOW RATE (GPM) 125 125 T.D.H (FEET) 25 25 err MOTOR NUMBER 1 2 MANUFACTURER S & L S & L MODEL NUMBER 4B2A 4B2A HORSE POWER 3 3 VOLTAGE 240/120 240/120 R.P.M/PHASE 900/3 900/3 FORCE MAIN DATA tip LENGTH SIZE 4" LIFT STATION CONSTRUCTION DESCRIPTION Wet well/dry well lift station (Smith & Loveless Design) EMERGENCY POWER CONNECTION Yes rw HEATING No CONTROL Transducer / Bubbler VENTILATION Yes TELEMETRY Yes �rw E:\COMP_96_LS_LIST.DOC MAB(10/29/98) 13 SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Lake Washington Flush Station LOCATION 2727 Mountain View Avenue North CONSTRUCTED 1972 STATUS Active REHABILITATED PROJECT WWP-27-0158 PUMP AND MOTOR DATA '1°l PUMP NUMBER 1 MANUFACTURER Paco MODEL NUMBER 470-11 so FLOW RATE (GPM) 400 T.D.H (FEET) 6.5 MOTOR NUMBER 1 MANUFACTURER Paco MODEL NUMBER HORSE POWER 1.5 VOLTAGE 240/120 R.P.M/PHASE 1150/3 FORCE MAIN DATA LENGTH SIZE 8" CI LIFT STATION CONSTRUCTION +rir DESCRIPTION Submersible non-clogging pump to pump lake water into gravity sewer for flushing purposes EMERGENCY POWER CONNECTION Yes HEATING No CONTROL Timer VENTILATION No TELEMETRY Yes • E:\COMP_96_LS_LIST.DOC I MAB(10/29/98) 14 a SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Lake Washington No. 2 LOCATION 3901 Lake Washington Blvd. North CONSTRUCTED 1972 STATUS Active tep REHABILITATED 1994 PROJECT WWP-27-2063 PUMP AND MOTOR DATA PUMP NUMBER 1 2 .. MANUFACTURER Hydromatic Hydromatic MODEL NUMBER S-13839 S-13840 FLOW RATE (GPM) 385 385 T.D.H (FEET) 35 35 to MOTOR NUMBER 1 2 MANUFACTURER Hydromatic Hydromatic MODEL NUMBER S 4 NX 500 JC S 4 NX 500 JC "'' HORSE POWER 7.5 7.5 VOLTAGE 230/460 230/460 R.P.M/PHASE 1750/3 1750/3 FORCE MAIN DATA ern LENGTH 192 LF SIZE 4" PVC 41111 LIFT STATION CONSTRUCTION DESCRIPTION Wet well mounted lift station(Smith & Loveless Design) with fiberglass enclosure EMERGENCY POWER CONNECTION Yes alp HEATING Yes CONTROL Transducers / Floats • VENTILATION Yes TELEMETRY Yes E:\COMP_96_LS_LIST.DOC I MAB(10/29/98) 1 5 law SEWAGE LIFT STATION DATA SHEET w LIFT STATION NAME Lind Avenue LOCATION 1801 Lind Avenue South CONSTRUCTED 1978 STATUS Active ea REHABILITATED 1983 PROJECT WWP-27-1999 PUMP AND MOTOR DATA PUMP NUMBER 1 2 3 MANUFACTURER Hydromatic Hydromatic Hydromatic sii MODEL NUMBER RV-6A RV-6A LV-6A FLOW RATE (GPM) 780 780 780 rr T.D.H (FEET) 13 13 13 gii 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 loro LENGTH SIZE 8" LIFT STATION CONSTRUCTION DESCRIPTION Wet well/dry well lift station (Hydronix Design) roo EMERGENCY POWER CONNECTION Yes w HEATING Yes CONTROL Transducers / Floats VENTILATION Yes TELEMETRY Yes WIN arr E:\COMP_96_LS_LIST.DOC MAB(10/29/98) 16 rrAi err SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Misty Cove eir LOCATION 5025 Ripley Lane North CONSTRUCTED 1974 STATUS Active REHABILITATED PROJECT WWP-27-0163 `. PUMP AND MOTOR DATA PUMP NUMBER 1 2 MANUFACTURER A & C A & C MODEL NUMBER NSWV NSWV ay FLOW RATE (GPM) 75 75 T.D.H (FEET) 10 10 4111 MOTOR NUMBER 1 2 ''p MANUFACTURER A & C A & C MODEL NUMBER 400 400 HORSE POWER 2 2 VOLTAGE 240/120 240/120 Ile R.P.M/PHASE 1150/3 1150/3 FORCE MAIN DATA 411. LENGTH 3 LF SIZE 4" CI LIFT STATION CONSTRUCTION DESCRIPTION Recessed wet well mounted lift station- stacked wells "" Electrical Panel Upgraded in 1997 EMERGENCY POWER CONNECTION Yes HEATING No CONTROL Transducers / Floats ,r. VENTILATION Yes TELEMETRY Yes E:\COMP_96 LS_LIST.DOC IMAB(10/29/98) 17 yr w SEWAGE LIFT STATION DATA SHEET rr LIFT STATION NAME Stonegate S LOCATION 5610 NE 26th Street CONSTRUCTED 1996 STATUS Active S REHABILITATED PROJECT WWP-27-2202 PUMP AND MOTOR DATA PUMP NUMBER 1 2 MANUFACTURER S & L S & L MODEL NUMBER 950809 950810 FLOW RATE (GPM) 140 140 T.D.H (FEET) 125 125 ■r MOTOR NUMBER 1 2 MANUFACTURER S & L S & L N' SERIAL NUMBER 954046A-2 954046A-3 MODEL NUMBER 02000-1WAW-0022 02000-1HAN-0022 HORSE POWER 20 20 VOLTAGE 230/460 230/460 so R.P.M/PHASE 1800/3 1800/3 FORCE MAIN DATA LENGTH 1300' SIZE 4" LIFT STATION CONSTRUCTION No DESCRIPTION Wet well mounted lift station w/ fiberglass enclosure S EMERGENCY POWER CONNECTION Yes HEATING Yes CONTROL Transducers / Floats VENTILATION Yes TELEMETRY Yes S E:\COMP_96_LS_LIST.DOC I MAB(10/29/98) 18 a SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Summerwind LOCATION 5214 NE 23rd Court CONSTRUCTED 1987 STATUS Active REHABILITATED PROJECT WWP-27-1949 +++ PUMP AND MOTOR DATA PUMP NUMBER 1 2 um MANUFACTURER S & L S & L MODEL NUMBER 4C3B 4C3B „r„ FLOW RATE (GPM) 375 375 T.D.H (FEET) 133 133 MOTOR NUMBER 1 2 11• 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) w/ fiberglass "' enclosure. Power panel & emergency plug moved to top of driveway. EMERGENCY POWER CONNECTION Yes low HEATING Yes CONTROL Transducer / Floats VENTILATION Yes TELEMETRY Yes E:\COMP_96_LS_LIST.DOC MAB(10/29/98) 19 rrr SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Talbot Crest LOCATION 2515 Talbot Crest Drive South CONSTRUCTED 1965 STATUS Active REHABILITATED PROJECT WWP-27-0085 PUMP AND MOTOR DATA PUMP NUMBER 1 2 MANUFACTURER S & L S & L MODEL NUMBER FLOW RATE (GPM) 50 50 T.D.H (FEET) 96.6 96.6 ori MOTOR NUMBER 1 2 MANUFACTURER Quincy Quincy MODEL NUMBER 240-10 240-10 HORSE POWER 5 5 VOLTAGE 240/120 240/120 R.P.M/PHASE 1800/3 1800/3 FORCE MAIN DATA e LENGTH 525 LF SIZE 4" mio LIFT STATION CONSTRUCTION DESCRIPTION Duel pneumatic ejectors lift station (Smith and Loveless Design) with 8" overflow bypass EMERGENCY POWER CONNECTION Yes HEATING Yes CONTROL Electrodes / Pressure Sensor VENTILATION Yes TELEMETRY Yes +r E:\COMP_96_LS_LIST.DOC MAB(10/29/98) 20 a SEWAGE LIFT STATION DATA SHEET LIFT STATION NAME Westview LOCATION 1149 Monterey Avenue NE CONSTRUCTED 1996 STATUS Active REHABILITATED PROJECT WWP-27-2188 +�. PUMP AND MOTOR DATA PUMP NUMBER 1 2 ,m, MANUFACTURER Barnes Barnes MODEL NUMBER FLOW RATE (GPM) T.D.H (FEET) MOTOR NUMBER MANUFACTURER Barnes Barnes MODEL NUMBER HORSE POWER 2 2 VOLTAGE 240/120 240/120 r R.P.M/PHASE 3450/1 3450/1 FORCE MAIN DATA LENGTH 250' SIZE 3" LIFT STATION CONSTRUCTION DESCRIPTION Submersible grinder pumps EMERGENCY POWER CONNECTION Yes HEATING No CONTROL Floats „I, VENTILATION Yes TELEMETRY Yes er. E:\COMP_96 LS_LIST.DOCIMAB(10/29/98) 21 1111 Appendix B Agreements ter +� Agreements A. Cascade Sewer District Agreement(Resolution 1234) B. Cascade Sewer District Agreement(CAG 039-74) C. Soos Creek Water and Sewer District Boundary Agreement(CAG 083-91) D. Soos Creek Water and Sewer District Boundary Agreement(CAG 97-164) E. Skyway Water and Sewer District Boundary Agreement(CAG 94-065) F. Apollo Elementary School Service Agreement(CAG 1636-70) WO G. Water District No. 107 Joint Use Agreement(CAG 035-75) +`r H. Renton Franchise to Water District No. 107 I. Coal Creek Utility District Boundary Agreement(pending) J. City of Kent Joint Use Agreement(Resolution 2413) r K. King County Franchise 620 L. King County Franchise 8757 M. King County Franchise 12267 N. Cedar River Water and Sewer District Boundary Agreement(CAG 99-014) wr rrr CMP-AGMT.DOC\ +rr RESOLUTION HO. 1�3 7 ww 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 ow 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 ow the sewer system of the Municipality of Metropolitan Seattle, and WHEREAS it is deemed advisable and of public benefit to provide for the connection ow and hookup of properties located within the CITY to said interceptor sewer to be constructed at the sole cost and expense of DISTRICT, and ow 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 ow 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 ow 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, ow NCM THEREFORE, BE IT RESOLVED BY THE MAYOR AND THE CITY COUNCIL OF THE CITY OF RENTON AS FOLLCXJS: ww SECTION I: All the aforesaid recitals and findings are hereby determined to be true and correct in all respects. ow 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 sr 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— ow 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— um s- " ':---hent 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 air owners of property located within the CITY and abutting upon said interceptor sewer line hereinabove referred to. OW PASSED BY THE CITY COUNCIL this 2nd day of March, 1964.mos �J Helmie Nelson, City Clerk APPROVED BY THE MAYOR this 2nd day of March, 1964. ,- APPROVED AS TO FORM: �-� J 1 • /'Frank Aliment, Mayor wo "M.. .eeel1an, City Attorney or : . c1.n0...,7. 1" of thi ... ... .»... el I E t•o. AG REL• ME ,IT mi AG - 76'1- -641 THIS AGREEMENT, made and entered into this 27th day of March, 1964, by and between CASCADE SEER DISTRICT, a municipal corporation of the State of .lashington, hereinafter called "DISTRICT", and the CITY OF RENTON, a municipal corporation of the State of :;ashington, hereinafter called "CITY", fi WITNESSET 1I: THAT .!UEREAS, the District and the City are situated contiguously in Ni King County, State of Washington, and :IIIEREAS, the District has prepared construction plans and called for mi 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 MO through certain portions of the City to collection trunk sewer lines constructed by the Municipality of Metropolitan Seattle, and di '.JIIEREAS, certain areas hereinafter described situated within the boundaries of the City may also be served byuse of said interceptor line, thereby eliminating mi the necessity of the City constructing such trunk facilities, and !I1EREAS, 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. Ni NOW THEREFORE, IT IS HEREBY MUTUALLY COVENANTED AND AGREED by and between the parties hereto, as follows: 1. That the entire construction cost of said intercentor line, according to the engineering plans therefor, heretofore prepared by the District and approved by the City, shall be paid by the District. di 2. That said line shall be constructed through and across certain areas within the City of Renton, King County, Washington, described as follows: di The following description located in Ung County, lJashington, 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: mi Beginning at the intersection of the North line of the NE 1/4 of Section 21, Township 23 North, Range S East :I.M., and the Northwesterly margin • of the City of Seattle's Mercer Island pipeline R/;J, said intersection also being North 89000'24" West 1112.45 feet from the Northeast corner of said Sec. 21; thence South 28023'541 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; alsomi being existing Metro M.N. R-10-33; -1- a di so (1) Thence South 28°23'54" West 913.00 feet; (2) Thence South 87°04'09" tlest 84.50 feet; (3) Thence North 32°01'11" West 133.00 feet; (4) Thence North 80°15'03" West 1,213.76 feet; (5) Thence South 14°13'42" Jest 321.90 feet; (6) Thence South 36°27'57" :lest 428.92 feet; (7) Thence South 40°52144" West 195.69 feet; (8) Thence South 72°39'42" West 282.20 feet; (9) Thence South 48°08'23" jest 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" jest 603.91 feet; (14) Thence South 11°03'08" ;'lest 104.00 feet. ow 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: moo City of Renton streets; The most Southwesterly 105.00 feet of Course (9); All of Course (10) ; ow The most Northwesterly 37.49 feet of Course (11). The City shall grant to the District a permit for the construction, operation ow 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 ow 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 ow 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 war other for the privilege of such use, other than as hereinafter set forth herein for reimbursement of construction costs, maintenance and repairs. ■r 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 ow City of Renton, King County, Washington, described as follows: That portion of Sec. 21, Township 23 North, Range 5 East U.N. lying South of the Cedar River and North 'w 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; ow Also, that portion of the Easterly 1/2 of Sec. 20, Township 23 North, Range 5 East N.N. from which the sanitary sewage is carried Easterly or Southeasterly in the future across 116th Ave. S.E. and into said Sec. 21 ,ow or into Sec. 28, Township 23 North, Range 5 East U.N. under such terms and conditions as the City may establish for making such connec- OM 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- ow 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 a 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 inteFCe,tot 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 rig removed, such unauthorized tap, hookup, or connection, and all connecting tile or pine located in the facility right-of-way, and dispose of unauthorized materials ail so removed, without any liability whatsoever to any party, It is ecpressly understood that the aforesaid minimum charge per square foot, (based on the provisions of R.C. J. 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, S 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. lig 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 mid 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 OP 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 ori connect to said interceptor sewer trunk line. No interest shall be charged the City upon such sum, or any other sum, by the 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- rll woo 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 i1w by the Distfict bears .e 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 ow of either these parties, their agents or assigns, shall be repaired by the responsible party. woo 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 woo the present bonded indebtedness of the District or subsequent bonded indebtedness incurred for the purpose of refinancing thereof shall have been paid in full, wwr 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- wr 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 ww maintenance thereof continued upon the same proportionate basis as hereinabove set forth. we 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, we which it is contemplated would then be available as lines necessarily constructed in development of said properties to such extent. or IN WITNESS WEEREOF, the parties hereto have set their hands and seals this 27th day of March, 1964. ow CASCADE SE" R.DISTRICT - By:k —Ciairman By: l ' Ce;" Secretary Wrr CITY OF ENTON By: owMayo r Attest: •-•-/V2647(--<- 72/414:4-41A,...,1 City Clerk -4- STATE OF WASHINGTON ) MO ss. COUNTY OF KINGMi ) 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 LOWELL V. LECKENBY and CHARLES W. BAYLESS, to me known to be the Chairman and Secretary, respectively, of CASCADE SEER DISTRICT, a municipal corporation of the State of Washington, the corporationMi 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 MO seal of said corporation. WITNESS my hand and official seal hereto affixed the day and year in this certificate above written. ai Notary Public in and for the State Ali of Washington, residing at Renton STATE OF WASHINGTON ) ss. COUNTY OF KING -774 ) ani On this ,// day of 4a ch;'l964, before me, the undersigned, a Notary Public in and for the plle ashi gton, duly commissioned and AH sworn, personally appeared I ALIII f and IIELMIE NELSON, to me known 11 i 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 and year in this certificate above written. , Notary-public in and for the State 0641, of Washington, residing at Renton al el di S a -5- a ow. um RATIFICATION OF AGREEMENT um The undersigned, being the principal owners of properties hereinabove described, situated within the boundaries of the City of ow Renton, in consideration and recognition of the obligations incurred by the City of Renton under the terms and conditions of the foregoing am Agreement, do hereby ratify and acknowledge the obligations thereof to the extent that said Agreement affects our real property hereinabove described. mw ./e do hereby acknowledge upon behalf of ourselves, our heirs, executors and assigns that none of our said properties may be um connected to the sewer trunk main being constructed by Cascade Sewer District until payment has been made to the City of Renton of such ow 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 40 hereinabove described. mw DATED this ,,,77;e6 day of March, 1964. VIKING INVESTMENT Cs: ORATION - By: I - Al • Ar Presi Mr B /i/� �" easu er ow E c-)j_ ARNE G. GOEDECKE, ind 'd lly.and as Attorney-in-Fact for Louise M. Goedecke, his wife um ■r arr OW -6- mw STATE OF WASHHINGTON ) 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'.•!ICK, JR. and ROBERT C. DETRICH, to me known to be the President and Treasurer, respectively, of VIKINGMO 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 S in this certificate above written. VI Notary Pu.lic in :n. or t - rate ; of Washington, r-•iding at • a STATE OF WASHINGTON ) ss. COUNTY OF KING ) a 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 ei - 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. al WITNESS my hand and official seal hereto affixed the day and year in this certificate above written. di • Notary Public in a d £or th / te ori of Washington, res ing at�� ; V* Mi it -7- de e - o " CAG 039-74 '1 • .w 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 IMO to the areas defined. I. t DEFINITIONS AND TERMINOLOGY • • our (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. "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. .rr (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 ow eight inch (8") sewer pipe and six manholes in Springbrook Road extending approximately S70 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 18-2S. • (5.) . "The Springbrook Line" is the sewer line constructed 0110 pursuant to the Safecare-Careage Contract. (6.) "Scott's Terrace" is the property, the plat of which ai is recorded as the plat of Scott's Terrace in Volume 72 of Plats , pages 39 and 40, of the records of King County. err (7.) "The Radovich Property' is the entire parcel of land bounded on the south and east by Carr Road, on the north by the ar -1 • - ut south line of Scott's Terrace, and on the west by the Talbot mill Road. (8.) "The Talbot Road" and the "Springbrook Road" are in ui effect a single street, the northerly portion of which is com- monly known as Talbot Road, and the southerly portion of which a is commonly known as the Springbrook Road. (9.) "So. 180th Street" is a street intersecting Talbott s 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- ai tends easterly from its intersection with the Talbot and Spring- brook Roads, it is known as Carr Road. mt (10.) "The existing crossing" is a short main extension of the Springbrook Line crossing the Talbor Road from manhole No. 2 ut 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 e . 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. ut (12.) "U.L.I.D. 11" is a Utility Local Improvement District, numbered 11, being formed by Cascade Sewer District, and includes es 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 of410 the westerly boundary of Lots 17 and 18 of Scott's Terrace. (13.) "METRO" is the Municiplaity of Metropolitan Seattle, ut (14.) "The METRO Line" is a sewer trunk built, owned and maintained by METRO, into which the Springbrook Line empties it at approximately the intersection of Talbot Road and South 177th Street. The METRO Line continues generally easterly along South et 177th Street, then continues generally southeasterly along 98th Avenue South, and then continues easterly. ui II. Illi 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 oi ow defined. .r ; (2.) Said contract provided for reimbursement to Safecare- Careage, subject to the laws and ordinances of the City of Renton, ow by the owner of real estate who did not contribute to the orig- inal cost of the improvement and who subsequently wished to tap ow into or hook onto or use the facilities. (34 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 a" 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 o and rate of said charges for said properties, have already been determined in accordance with Ordinance No. 2847 of the City of r Renton. . Of the properties involved in this Agreement, they are the properties, sewer service to which is to be provided by the 4111 City and not by the District under this Agreement. (S.) The City is presently providing sewer service to Lots p„ 1 and ,2 of Scott's Terrace by means of the existing crossing. (6.) No formal agreement for the provision of sewer service ow in the subject area has been entered into between the City and ,the District. ow The City also proposes to provide sewer service to Lots 4 and S 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. ow (9,•) Although all of Scott's Terrace and the Radovich Property are within the Cascade Sewer District and are outside the limits ow of the City, each party recognizes that sewer service to Lots 1, 2, 3, 4, S, 6, ; 7, 8 and 16 of Scott's Terrace and to that portion ow -3- el of the Radovich property which lies to the west of the ui southerly prolongation of the westerly boundary of Lots 17 and 18 of Scott's Terrace can be provided by the City through art 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- 01 termined pursuant to said Ordinance No. 2847 has and will pro- vide the funds for reimbursement of Safecare-Careage under the 0 contract. (10.) The District proposes to serve the properties within mu 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 ai 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 toou various properties referred to above, the parties hereto' do desire by this Agreement to formalize their mutual responsibil- mu ities and rights in the area. e III. MUTUAL COVENANTS AND AGREEMENTS ue 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- tut 11 OW OW 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 us prolongation of the westerly boundary of Lots 17 and 18 of Scott's Terrace and for Lots 1, 2, 3, 4, S, 6, 7, 8 and 16 of u Scott's Terrace, and the District will not attempt to provide sewer service for said areas. u s (2.) The City will authorize an extension of or addition to the Springbrook Line by permitting the construction of the OW proposed crossing hereinabove defined. Said crossing must be in accordance with the standards and requirements of the City s" as to design and construction. The cost of the construction of said proposed crossing will be borne by the District or us 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 or transferred to the City and will be available for the use of the City to provide sewer service to those lots in Scott's us Terrace for which the City is to make sewer service available under this Agreement. err (4.) Other than the properties described in Paragraph (1.) of Section III of this Agreement, the District will make us sewer service available for all other properties within its boundaries in the area of U.L.I.D. 11. ,,, (S.) The City agrees that the District may, without pay- ment of any area connection charges, connection fees, latecomer us 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, ON provided that the design and construction of the District's -S- e re 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. Thees ,District will also cause a manhole to be constructed at the easterly end of the proposed crossing, and each of said manholes, ei 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. 110 (7.) Unless it has the prior consent of the City, the District will not attempt to make sewer service available to el 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- el 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 themo 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- or oo claims made against the City and will protect the City from ,,r any liabilities in connection with any of the work to be done by the District. mo (12.) Nothing in this Agreement as to which party shall pro- vide sewer service to particular properties shall be construed or as to require the provision of such service except in accord- ance with the Ordinances or Resolutions of the party, and .rr upon payment to the party of all proper charges by the property owner. oo 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. oro DATED this /Q day of /yc9vFML3t= , 1974. oo CITY OF RENTON A municipal corp ration • ire By //�� ayor BY /��'1L t,?17_,er( or CASCA E SEWER ISTRICT OWBy .�-� L -- am . -. CA: esiden ,Commissioner BY L✓:u / ow ommissioner Bye7>t 4-c 4�.- '��z ✓J---�� or Secretary Commissioner or • oo • oo 7 CAG-083-91 CITY OF RENTON & SOOS CREEK WATER AND SEWER DISTRICT AGREEMENT FOR THE TRANSFER OF FACILITIES AND FOR 01" THE ESTABLISHMENT OF SERVICE BOUNDARIES THIS AGREEMENT, made and entered into thisbA, day of dj %%� ., , 19,V, by and between SOOS CREEK WATER AND SEWER DISTRICT, acWashington 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 so of Washington, • No 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 go 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 vie 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, 4-7:0400400g.001 Page 1 of 11 {SAY 2 3 19 • ..r IT IS HEREBY AGREED by and between the parties hereto as follows: 141 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 11110 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 equalto the remaining amount to be depreciated. W. 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 . 4-7:0400400g.001 Page 2 of 11 Ali 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. S 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 too 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 so 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: so Soos Creek (Cascade) Manhole Run (Will As-Built Include Upstream Length Diameter Page No. Manhole) (Feet) (Inches) Street S 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. rto a) Latecomers: None due. b) General Facilities Charge: None due. c) Portion of Monthly Service Charge to Cover Bond Indebtedness S 4-7:0400400g.001 Page 3 of 11 • S S 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 ow 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 a,, 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. aim 4-7:0400400g.001 Page 4 of 11 ui is Soos Creek Manhole Run (Cascade) (Will Include Length Diameter As-Built No. Upstream Manhole) (Feet) (Inches) Street S 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. S 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. a K-37 No. 34-6 to 34-7 400.0 8 PVC 96th Ave. S. illi 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 iii K-37 No. 34-14 to 34-15 288.0 12 PVC Easement so 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. II K-38 No. 34-9 to 34-10 400.0 8 PVC 97th Ave. S. K-38 No. 34-10 to 34-1 1 400.0 8 PVC 97th Ave. S. uoi K-40 No. 34-17 to 34-26 179.0 8 PVC 96th Ave. S. ai a) Latecomers (From U.L.I.D. No. 34) Property 062205-9002 440 L.F. @ $35.89 per Lineal Foot so 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 NO RENTON and paid through to THE DISTRICT at the time of connection. Property 793100-0120 is now RENTON property. However, it is in the no "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 mi 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. "' lip 4-7:0400400g.001 Page 5 of 11 S a 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 IWO 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 r 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) 4a:0400400g.001 Page 6 of 11 } tei Present Value of 12 Years of Repayment: 16 Connections x $59.598 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 ai 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. a 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. emo 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 rr • 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 ere 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. law 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 are 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 the system 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) +ww S. 192nd Street, at and below 1500 600 0 MH 34-3 41. 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 tr MH 80-14 West of MH 80-14 3900 1500 400 a No connections, by either party, will be allowed between Manhole 34-OA and Manhole 80-15 except by mutual agreement. tio 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 .i 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 go 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. Ito 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 4-7:0400400g.001 Page 9 of 11 a tor '1°" 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 r„ 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 vir 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 4day of a‘G ! , 19r Approved by Ordinance No. of the City Council of the City of RENTON, Washington, at its regular meeting held on day of , 19_. CIT'rOF`RENTON By: (-\) .111.k Title: Mayor ATTEST: /) 4lA1 #' 4" Ci �'' erk 0666-S lat 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 Apr•1 , 1991. fmio SO•S CEE • ATER AND 'I AlliVadWAt Patrick .1 ' .zil , Presid- �t Title: Board of Commissioners 4-7:0400400g.001 Page 11 of 11 iii CAG-97-164 (r) wr CITY OF RENTON and SOOS CREEK WATER AND SEWER DISTRICT INTERLOCAL AGREEMENT FOR THE ESTABLISHMENT OF SERVICE BOUNDARIES THIS AGREEMENT, made and entered into this /0114". day of Q2(, , 19 9 7 ,by and between the CITY OF RENTON, a Washington municipal corporation, hereinafter referred to as "the City", and SOOS CREEK WATER AND SEWER DISTRICT, a Washington municipal corporation, hereinafter referred to as tr. "the District", both being duly organized and existing under and by virtue of the laws of the State of Washington, WITNESSETH: WHEREAS, both the City and the District are public agencies authorized by law and v" qualified to engage in furnishing water service and sanitary sewer service within their prescribed areas;and WHEREAS, it is in the public interest for the parties herein to amend the boundaries previously agreed to under the 1991 Interlocal Agreement to provide for the efficient planning and development of water and sewer services in areas which may be served by either, or both, is` of the parties herein. NOW, THEREFORE: OSP IT IS HEREBY AGREED by and between the parties hereto as follows: 1. Water Service Boundary. The parties have agreed on a revision to the permanent water service area boundary between them. The revised boundary is legally described in Exhibit "A",which is attached hereto,and by this reference incorporated herein. The boundary is graphically depicted on the map attached hereto as Exhibit "B", which is by reference incorporated herein. IMO 2. Sewer Service Boundary. The parties have agreed on a revision to the permanent sewer service area boundary between them. The revised boundary is legally described in °" Exhibit"C",which is attached hereto,and by this reference incorporated herein. The boundary is graphically depicted on the map attached hereto as Exhibit "D", which is by reference incorporated herein. .. Renton/Soos Creek Interlocal Agreement for the Establishment of Service Area Boundaries - 1 a +rri 3. Transfer of Service Area. The City shall assume responsibility to provide service to the area(s) on the City's side of the respective service area boundaries as revised by this agreement, whether or not annexed to the City. The District shall assume responsibility to provide service to the area(s) on the District's side of the respective service area boundaries as revised by this agreement, whether or not annexed to the City. As part of this agreement, the sewer facilities installed under District ULID 11 shall be transferred to the City as described in the November 19, 1974 interlocal agreement notwithstanding that the properties served by these sewers have not been annexed to the City. 4. Governmental Approvals. The parties may give notice of the adoption of this Agreement to Metropolitan/King County, to the Department of Ecology,to the Department of Health, and to any other agency with jurisdiction or mission relevant to the terms hereof, and shall cooperate and assist in all reasonable manner in procuring any necessary approvals hereof by those agencies. we 5. Sanctity of Agreement. This agreement constitutes the entire agreement of the parties regarding the subject matter hereof, and there are no other representations or oral agreements other than those listed herein,which vary the terms of this agreement. Future agreements may ■w occur between the parties to transfer additional, or future service areas by mutual agreement. 6. Obligations Intact. Nothing herein shall be construed to alter the rights, responsibilities, liabilities, or obligations of either the City or the District pursuant to the AGREEMENT FOR THE TRANSFER OF FACILITIES AND FOR THE ESTABLISHMENT OF SERVICE BOUNDARIES, previously executed by the parties, except as specifically set forth herein. Approved byResolution No. pp 3 a8� of the City of Renton, Washington, at its regular meeting held on the (1`* day of 00(b , , 199 '1 . CITY OF RENTON um By: Jess anner Title: 111,01.3 0 Ir Attest: 497NPAA9A01 es City Clcrk Brenda Fritsvold Deputy City Clerk a Renton/Soos Creek Interlocal Agreement for the Establishment of Service Area Boundaries - 2 a a or vYr Approved by Resolution No. 1611-C of Soos Creek Water and Sewer District of King County, Washington, at its regular meeting held on the 21st day of May, 1997. SOOS CREEATER AND (WER DISTRICT uw / / By: Al/f Sandeli ' ►. •ent of B•and By: Philip Sul' • •, Secretary of Board OW WO WO WO WO Renton/Soos Creek Interlocal Agreement for the Establishment of Service Area Boundaries - 3 CAG-94-065 AGREEMENT FOR ESTABLISHMENT OF SEWER SERVICE BOUNDARIES BETWEEN SKYWAY WATER AND SEWER DISTRICT AND CITY OF RENTON THIS AGREEMENT is made this 9,f , day of Agw , a 1994, by and between Skyway Water and Sewer D' 'rict, a Washington municipal corporation (hereinafter "Skyway" ) and the City of Renton, a Washington municipal corporation (hereinafter a "Renton") . RECITALS A. Skyway is qualified to provide water and sewer service in its service area. es B. Renton is qualified to provide utility services including water and sewer within its service area. a C. Skyway provides sewer service in an area adjacent to Renton' s corporate boundaries and it is in the best interests of both parties to enter into an agreement relating to sewer service boundaries in order to promote efficient planning and development of future sewer services . D. Skyway (previously known as Water District No. 128) and Renton entered into an agreement relating to sewer service its boundaries between the two jurisdictions dated September 16 , 1985, which agreement should be rescinded. a NOW THEREFORE, in consideration of the conditions and covenants contained herein, the parties agree as follows: 1. Sewer Service Area Boundary Between Skyway and Renton. a The attached legal description, Exhibit A, describes the boundary line separating the Skyway sewer service area from the Renton sewer service area. Skyway shall provide sewer service within the area marked as "Existing Sewer Service Area" and "Future owl Sewer Service Area. " Renton may provide sewer service to the area outside the Renton city limits that is not included in a Skyway' s "Existing Sewer Service Area" or "Future Sewer Service Area. " Exhibit B is a map depicting the revised sewer service boundary and Skyway' s "Existing Sewer Service Area" and "Future Sewer Service Area. " . ■iii 117977-4/skyagr.924 ■r 2 . Rescission. The Agreement between Skyway and Renton relating to sewer service boundaries dated September 16, 1985 is hereby rescinded. • 3 . Entire Agreement. This Agreement constitutes the entire agreement of the parties and there are no representations or oral agreements other than those contained herein. 4 . Authority. The parties signing on behalf of Renton and Skyway warrant that they have the authority to sign. Approved by C-�RRe' lvalution e. No. 3063 Approved by Resolution of the City Council of the No.94-03-197of the Board of City of Renton, WA, at a Commissioners of Skyway Water regular meeting held on and Sewer District of King May 23, 1994 County, Washington, adopted at its regular meeting held on February 14 , 1994 CITY OF RENTON SKYWAY WATER & SEWER DISTRICT lk By: - ► By: ` / t{ Gl�p ut c% Ear Clymer, Mayo t Albert Blanchard, President err ATTEST: Alp ATT T: (/,----. Marilyn r rsen, City Clerk Don orenson, Secretary APPROVED AS TO FORM: del iitA?-mvegft. Larry Warren, City Attorney rr err 1n977-4/skyagr.924 2 r • ) -- - ` AGREEMENTii • • v. . % ‘1.1117Iii:j • 111. 1 • 04° et,S R-,A . TIH1.; AGREEMENT made and entered into this 0000tday of Vii;. .2_uaw4my, 1970 by and between the City of Renton, hereinafter referred to as "City", Issaquah School District 0411, hereinafter referred to ., = as "School District" and King County Water District 090, hereinafter • referred to as "Water District"; Y • ` w ITN ESS E r H: WHEREAS School District is contemplating the construction of a certain elementary school located within the present boundaries of Water District and , WHEREAS both such Districts have petitioned the City " ^ t of Renton to provide for the instillation, construction and hookup 1 to the city's existing newer system as herein below set forth and WHEREAS all of the parties are agreeable to accomplish ' the foregoing subject to the terms and conditions herein below set forth, NOW THEREFORE, IT IS HEREBY AGREED AND COVENANTED BY ° AND BETWEEN THE AFORESAID PARTIES AS FOLLOWS: 1. The Water District is hereby given permission by City to build, construct and install a certain B inch sewer line over, ° f. _ j. unto and across the following described property, a distance of app. I 2C0 feet to-wit: On S.E. 116th Street, from approximately 195 feet t:ast of 140th Ave. S.E. to existing manhole located 5 foot, more or less. went of 140th Ave. S.E. # • and to hook up said line to the City's existing sewer installation lo- \ cated as follows: I 5 Existing 141 on S.E. 116th Street approximately 5' west of 140th Avenue S.E. i :g �x ei 0 i d .. •• 4 V� x 4 xcn rh - " ' t a . S .� ' +'t 'F"..?'":.•451.,•.- -.4‘.,-,,;:4 • r;..4, �: •,e` ,.v s a 1 - i'4 t >i• ,::i z" t. 1 .• "1• '` :•1•'•• • s > *`. y. s' • a .,xr 2 f>, 4„ z< • -• , + y i': . � Si., .. • •• • 2. It is expressly understood and agreed that said ,`' sewer installation, service and maintenance thereof shall be limited , to • and for the purpose of servicing the proposed elementary school to . be built by School District in the vicinity of Southeast 116th Street • :14a44- N and 148th Avenue Southeast, and for no other purpose. 7 ! "• `-' ':°: «., 3. All ' such work, whether for labor, material, secure- ,. p :4 ,. 4a • �' mant of easements and other right of way, shall be at the sole cost and - expense of the parties other than City and City shall be hold harmless 4 t .:. 3(+ i' -?,,. 4 from any liability or cost•in connection therewith whatsoever. ' r' - 4. All expenses and costs for the maintenance, replace- • . + ," men: and servicing of said sewer line, when so installed and connected, � .t shall be at the sole cost of Water District. ; . �. S. Water, District further agrees to pay unto the City • Lf,''- a c ' . ' 1.,,;.. „-as, the regular sewer charges as provided for by the City's ordinance for a t. . '' ,)t quasi-municipal corporations and located outside the City limits, to- , 'fir• . . .igether with any and all charges imposed or assessed by the Municipality ` ' i=. '.. +0 ,•`V of Metropolitan Seattle, known as'Ketro" .t ' '''''- '; : `� E 6. In further consideration of City entering into this •M6 —• '�-•••• ' Agreement, School District agrees, at its cost and expense, to enlarge = A .,' . ', that certain wet well for the existing city lift station located at Sunset Boulevard East and Union Avenue'N. E. in order to adequately ,r.'4,-., .1.' 1 s ;,n -- accommodate the additional sewage volume anticipated from said School • * _ t:'k pi.strict's elementary school. 7. School District shall deed unto the City by Bill of Sala and/or Qu' ••:m Deed that certain section of gravity system to be II -€ is s :, , constructed a: .ae westerly end of the proposed extention, and all as • • „• u ,, more particularly shown on the attached exhibit, labeled "Exhibit A", Y w :1'14":•'-';' . ;:4 which is incorporated herein and made a part hereof which said Exhibit _ , +` shall altogovern the location and construction of subject sewer line. . _ , f Such tr*..i1 r and conveyance shall be made without cost unto City. bt, •ti: �' '"1-4-',:',''' • �° -2- .14.''',,i4`1%,,,,,,.;°::Sf: 5 y+y -'-sl��. i • ^ ;Y`• •+ , - • • Kyr � X e ~ 'A,..l.i t ,-fi' —...°"F m. 4"�y0.e fftf` ^'0. ir' ,.w..s.,7,- ,,,,r," .'- ^,x x --:r .� f e , t.. 6 • a `r• _ - 1111111111111111111111111111116111"111• s • 111111111M 1 :- 3 kP ,! ,ew��i ,7��6+��:.: ', `'.-.,•'.'-- ' ` ....7.'"-.".:-..-fri1 ".- 4:::„'.4+� ,� - gra � 4 y 1• 4 ✓.r 3� �.:4 a i b .• tt 7 .t„ ?e' • .,,,,, het v` ., , ' . fie°[',F , . f', • �' I ti .•, " 8. All of the plans, specifications, and terms of such °" w*" i • construction project shall be submitted unto City and "Metro" for their - `� 4 , , f ' prior written approval and no work shall bs undertaken until such approval 1 t• 4 has been secured. • 9. Water District, provided it is responsible for the in- ; :' e • .,1 atallation of said sewer line, shall retain ownership thereof; but in �� k. , > ; 1 n.,:,,,,-"A+ 1,:°: • , • the event the area containing said sewer extension, or any portion °t . r ' thereof, is hereafter annexod unto the City of Renton as provided by # � - V t fid' t law, then Water District shall promptly and timely convey such sewer i` 4, , r \`"- a:*• .= line unto the City of Renton, without cost or expense to City, and K �1 �Y Water District shall thereupon promptly execute and deliver unto the ..t" ' . City its Bill of sale therefor. ) I'-.•,�r , ''-'i* ;,1•1, ,- 10. This Agreement shall be in etfect for a term of 10 i. i'"•‘;1•-•'• >�. „ � years or until such time as Water District has developed and constructed ' #'x. its own trunk sewer system to service the property of School District • -,''...:•„1.". � ' _+ 7+• 1'' at which time the City will discontinue its service to the School ,-,s 4; District and Water District shall promptly pay all charges and expenses 1 ;�5``. up to the effective data of such termina sone Water District shall give _ at least ninety (90) days prior written notice unto City prior to the . �: •,.... 1 ,.� 'effective date of its service unto the School District. In the event, , M,Fx� -cr ''� '"'x• however, that Water District has not constructed and put into use its , 1 k A a _ own trunk sewer line upon the expiration of this initial term, then '_ 4. both districts shall have the right•to renew such term for a further $ ''' 4'k period of 10 years upon such terms and conditions as the parties hereto , may agree on. • 11 , a • 11. All construction • shall be performed in Compliance with • , • 2„s `•, ' '— - ; all applicable building codes and upon approval,in addition to the City '' • '''. ' '?; . ,.•• " as hereinabove stated, of all governmental agencies having or claiming f ''. ,, jurisdiction thereover. -ka:r • ' , ,ft ..3_ +:. taw a f *, 'f �'a af 4m gyp` rF"X---,-4;44`4,: 4 .. i * ,- t f t ', Xg-" ;`.„--,:„1.-••"'� ', ,?1.1"4.,•'4,Yw ' ,. �` �� " • P•,' G<`� t,et � � t ' �� ; t ,4 ' Wx • ' e. „•+ :ry e as} g� .�-�,..ww� av'+kae.%� 'ik � wwk v t ._ .. � ♦ ' ...,:,-,,t4 ,: x ,4•-,,t-,-•••••,..:-. •;• '-',....,...: • •• . saw^r} • -.4:::--''''1,-:-;?' '-'"-:;'1:-.- ":' r+• ro +f. • t ra x y 4 . ' "*.-12. School District and Water District, severally and ,. . jointly, hereby agree and covenant to hold the City harmless from any = `j. , i� , I .° liability, cost or expense in connection with the aforespecified rani ted '. tary sewer project, its construction, maintenance and replacement, ; , whether to person or persons or damage to property or both. In 4:-..-A..,.; .-.'"'• .}��, . • the event City is joined as a party defendant in any litigation or claim .♦�, ` ` arising out of or in connection with the aforesaid sanitary sewer pro- "• ,t' ` -' ject, then both Districts agree to promptly and timely defend such , }� 4«c ,�• . ` • e- matter or such claim on•behalt of the City of Renton without cost or7`` ' expense to the latter. . w .r , • ''It. IN WITNESS WHEREOF, the parties hereto have hereunto set y �' their • hands and seals the day and year in this instrument first above ��; ' 1 ' • '-. written. CITY Or RENTON ' KING COUNTY WATER DISTRICT ISO . " 1 =...,7- 4-4,t, . : 1,: t* (.4,1/1/12,_ • / A ' ' c/ / • • � d, '%.23 bei ISSAQUAH SCHOOL DISTRICT Val . ' 4 . 4 f-kms. r . ,,, ,.-. STATE OF WASHINGTON ) + : ,-."t. ' COUNTY OF KING ) se ' On this Vint day of�4-«✓� , 1970, before as, the undersigned, a Notary II 1:-3� ',..:•';'*, Public in and for the State of Washingtoqn� duly commissioned and sworn rsonally appeared 1)«w- and7V.�+•ui�. +. to me known to be the ir ° e� respectively, of the City of Renton, q, . ,, ?, ` k,, •;a a is pal corporat1 n that •Tecutedpthe forelping instrument, and acknow• E_ c .• • ledged the said instrument to be the free and voluntary act and deed of said ..-.,0•4.21,,,,,;.;;. t"''''W' rper tion, for the uses and purposes therein mentioned, and on oath stated + that • authorized to execute the said instrument and that the seal atlixs is the'orporate seal of said corporation. � '',''" WIT:NESS•ey hand and official seal hereto affixed the day and year in this S '' certificate above written. r �� ,, « , , . )o u s n and for the State . v,+ ;max 44• �` �s of ashington, residing at Renton . *y _ " / Fep • am 'a w °` �, .s" t` • ' .. � ,=« , :,'rx + ,,,,2-' ,7,., w`.* «p . it 4 ', s -k„ as s4g , w F -, . k ,` ' ' ..xs"'�� ;43 rl �., `„ . - $ at'$ . • -4 .•+ . (al • CAG 035-75 AGREEMENT • THIS AGREEMENT, made and entered into this / 91 ' day of Cd Y1 ca , 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 andaries 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 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; I 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. 11 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 1 • wrr 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. r 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- em stood that vouchers for payment of monthly District liabllitiet 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 mor 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 um 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 me 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 um 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. ww 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 um 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. ow 9. Title and ownership of said line, upon completion and acceptance thereof, err mi • shall be in the Citmiiy 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 atf 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 II line forthe gallonage per day to which each party is herein limited. Whichever of the parties causes said line to exceed its total gallonage wO 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. mil 11. It is further anticipated that the total cost of said construction to be borne by District, as herein above set forth, aft 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 - .i 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 Citymil as hereinabove set forth. A portion of all governmental grant funds received by City crr' 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 rri 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 a against District' s liabilities hereunder until exhausted. If application of such credit results in an overpayment by District, iii 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, al whenever reasonably necessary, appropriate permits, easements and like documents, and to co-operate with the other to assist in ail 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. ai 13. The duration of this Agreement shall be perpetual until aa - 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/i day of Yfal. , 1975. for KING COUNTY AT.R DIS T NO. 107 CITY OF RENTON, WASHINGTON By , 1 13116:11,1-0.4.1 Chairman . . / . By BY .6_64,, Secretary/pRoTEm City Clerk 1110 OW t ' OW OW 1110 • OW OW I i mil EXHIBIT "A" I Ili, • 1 ani A , , f The following description located in King County, Washington described v di to centerline route of the proposed Interceptor Sewer from its point of ' 1 discharge into the Trunk Sewers of the Municipality of Metropolitan Seattle to the northerly terminus of the proposed interceptor sewer. sto 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 to Metro Manhole. mg 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 to 5. Thence North 0°47' 18" E 700.00 feet mi , a ir a 4 et 1 i 1 i II I Is \ V. k /1 1 L , ! /� 1. 14 AIIIS) 1416 , t: '. 117 '• • Me ilsl •----4 'I/ , / l9•a 19.7 x 147 l 1)i I 1 I • WM ilk C..- •D• i•-i 1 i....I- Niii:Vrsi . • . . : . • UN 1 7 b �� ST , 1 , / 1 . ••• •. .. • • I I 1 1e7 IL7 1.4 . IS Ne • 1)S 1)L• •.`s•::;::. , :;,�`.A..i�:�'1 Ci' '. 4:.. .?. . ..r.1 ;.:•F 7...t:i.: i'•,1 u .11 iii • ear NI' -----:\%L . •.. • • /:` , • \ ` , • 145 170 140 1)4 I 1)) I • i N. P ", OJE T LIMLLS - € . / t.\\ .0 V T. p �� _ • // �\ mi 1 JOUNLLRY�` 'D• 61 lib �\ ) i 1 ,< • �• i G ) e1r • `., v •f i ; J ,. � S ! • 1 • ,� 10 ! 10 ow • \ Mill'Mill . • .. . al ir. ,d1 III k ) ` ) I ) 4 ) I,: ire , ,I)$ `. :. , 1 1).1 l .g S •\T- . ...:. . ra.. . • 1.. ,, 6 r Iii ,. •�`© .Y. `.•,,...„....,., . ,- • . �'• 17. • 111 HI • aim ., �. III Allo I CI r� 5 : . •� • ; .� .;:-....4.••. '1• 1I le , 70 •71 •q• .. ,y• , fir. . F.n•.i'V;i'• ;;' ©© 7971 r. •1: • • ,y. 1• • 7) •r.7L • Iti • « Y '• ••')G! ■ Df.G' ' •• •57Z.:1 �—OC • • OTlis 117 i ..•'`i.r:.i: 4'`tiI%4.:�i-ii!''I.ii;T:::.1%.1 r, .. �� $7) ) )7c • • .403 "--(..)N3.gEb 111:111 EXHIBIT "B" I+Otr 1: 2 01 : :i X61 C:Y UTILITY FRANCHISE '. ••~" THIS UTILITY FRANCHISE is given this ,( dray of 1987, by the City of Renton, King County, Washington, a municipal corporation ( "Renton" or "Grantor" ) to King 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 w utility franchise to install , construct, maintain and G operate sewer lines, including mains, lateral , appurtenances UD and side sewers along, under and across such city roads, .4 streets , avenues, boulevards , alleys and public places 41.4 hereinafter called "rights-of-way", within the District' s .4 service area. to QD 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. , 0249a, dulylie and regularly enacted by its Council on the ' 4 day of 1987, hereby grants to the district and to its successors and assigns, for the term of twenty-five (25) a 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 w within the City of Renton' s present rights-of-way as referenced in paragraph 1. 01 above. a CITY3: 50/10/28/87 c:7!11• '1a #:'7229 R,_=::Cr F 1::•.GCS CASHSL *•+:•+:13.00 11 1 i 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 of 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, / either public or private, which may hold a franchise to O maintain and operate similar facilities in, upon , under, over, ,. across and along any of the public rights-of-way, or portions 1.4 thereof , within the area specified . ..4 (d) Other Governing Body. The term "other 0. governing body" shall be understood to mean such public 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 otherobligations 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 . ego 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 1.16 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 A,,,, herein , and this franchise shall in no way prohibit or prevent -2- • • 00 Ni the public from using any such rights-of-way or affect the jurisdiction of Renton over such rights-of-way or any part 00 thereof , or its power to make all necessary improvements , repairs or changes therein. 3. 04 Jurisdiction. This document shall not bedi 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. la 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. C04 3. 06 Vacation. If at any time the City shall vacate any City road , rights-of-way or other City property which is OD subject to rights granted by this franchise , the City shall not be liable for any damages or loss to the Grantee by reason of w4 such vacation. r* 3. 07 Responsibility for Damages . The Grantee agrees .r OD 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. a 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 00 plans , blueprints , cross-sections or such further detail of the a -3- 00 • ■r 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 allmonuments 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 +r p' not be disturbed during the Grantee ' s operation under the (1j permit . The method 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 GO markers disturbed during construction shall be made as v4 expeditiously as conditions permit and as directed by the director. The cost of monuments or other markers lost , tio r4 destroyed or disturbed and the expense of replacement by W) 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 WI be responsible for the cost of any required "as-built" drawings . A copy of these "as-built" drawings shall be provided to the City.tar 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- 7 a1 shall fail to restore the City roads or rights-of-way to the condition that pre-existed such work to the satisfaction of the oil 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 , thedi 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 sucheil 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 a Ch with the provisions above set forth so that the location and CI elevation of such line or facility shall conform to the new grade and location of the right-of-way. Grantee shall e O likewise , at its own expense, upon demand of the director, OD relocate any line or facility which shall interfere with a w4 reasonably located driveway giving access to abutting 4 property. The City shall in no event be held liable for any Ili D. damages to said Grantee that may occur by reason of the City' s co 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 a 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 : No a ati -5- a • err 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 ; VIIPart 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. P1985 ; OWashington Administrative Code Section 173-240, 0 "Submission of Plans and Reports for Construction 1.4of Wastewater Facilities" (DOE) ; MI 1.4 All other applicable state and federal (ti regulations and statutes regarding sewage works , GO 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. Ville 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- • err •. of 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 Ili rights-of-way acquired by the City after the date of execution of this document . If, upon expiration of this franchise , Grantee shall not a 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, Ili and such as are reasonably necessary to remove for the 01 installation of lines and/or facilities of other franchise N holders. Grantee shall be liable for the costs incurred in such removal including the cost of labor and equipment ; iii CD provided that such removal is affected with two (2) years from OD the expiration date hereof. '4 3. 15 Right to Amend . The City reserves for itselfi t* right at any time upon ninetyen noti ce to the OD Grantee, to so change, amend, modify or amplify anyof the 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 iii terminated at any time if the Grantee's lines and facilities are not operated or maintained in accordance with such statutes or regulations. ii 3. 16 Environmental Compliance. Grantee must conform to the Washington State Environmental Policy Act and any amendments sio thereto. 3. 17 No Discrimination in Employment . In connection with the performance of any work by the District or its agents r addressed herein , the District and its agents shall comply with all federal , state and local codes, statutes and ordinances prohibiting discrimination. ii 3. 18 Penalty for Violation of Conditions . If the Grantee shall violate or fail to comply with any of the terms , fig conditions or responsibilities of this franchise through neglect or failure to heed or comply with any notice given the , r -7- • +irr ' • • rr 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. out 3 .19 Franchise Fee. The Grantee shall annually pay to the City a franchise fee of five cents ($.05) per linealfoot 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 imp NO franchise, or its application is determined to be invalid by court of law, then the remaining provisions of the franchise GO shall continue and be valid unless the dominant purpose of ri the franchise or the public interest herein is thwarted " r♦ thereby. wq 3 . 21 Recording. This agreement shall be recorded with'OD the King County Office of Records and Elections immediately upon its execution by the parties herein. rr 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. ilit SECTION 5: RESERVATION OF RIGHTS; COMPREHENSIVE PLAN APPROVAL WIN 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. +w. CITY OF RENTON ( "Renton" ) RING COUNTY WATER DISTR T NO. 107 ( $ct" ) BYIIS�� £ L allp.0 IQ By "Di - Its N: .,or Its f i ?4g..t'r r ATTEST: m. ei22.07 8 rl + r� PYlf The undersigned hereby accepts all the rights and g privileges of the above granted franchise subject to all the terms, conditions, stipulations and obligations contained herein. wi RING COUNTY WATER DIST -CT NO 107 71,41rit:)By rrri Its Dated this ," day of November, 1987. CITY3:51/10/30/87 04 0 OD t4 e wq i. La a • • A Intentionally Left Blank a. IMP 11111 err OW OW Coal Creek Utility District Boundary Agreement- Pending so Si imp vi. Intentionally Left Blank err Wit OW O OW OW OW litt IWO Wit WW • • CITY OF RENTON, WASHINGTON • RESOLUTION NO. 2413 WHEREAS the City of Kent has within its municipal boundaries a portion of land bordering S. 180th, also known as MO S.W. 43rd, which area is not presently served by sewers, and WHEREAS the City of Kent does not have at present the MO 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 WI City of Renton to serve previously described land with the City of Renton's sanitary sewer, and Oi 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 40 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 00 shall have the right to charge one and one-half times the normal sewer service rate plus its normal connection charges, System ei Development Charges, tap-in charges, and Community Facility Charges as are applicable, now therefore ON THE CITY COUNCIL OF THE CITY OF RENTON, WASHINGTON, DO RESCUE AS FOLLOWS: a 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 Interlocal Agzeement 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. Oi e ores A. Mea, Gty Clerk 10 MO OW rr OW APPROVED BY THE MAYOR this 3rd day of August, 1981. — Bar ara . S in oc , ayor we Approved as to form; tri Lawrence J. Warren, City—Attorney irr or or war rrr rr ow Ito sir err 17 - ----_ 1 11 ji.;9.7e' - IMO t1.iit N%'d744.0 / . �a 20./!' SO I • • d- I P i IT Hesolution No. 2413 VS = oA $. Exhibit N/'l7 4f.A X.o7' O J. IN I_ is k 72 'DAVENUE SOUTH w Er •1T0, Ili O V 1e III I I Nl_,,J:_l_i 6 1 . ', 411111 20.36 t -}- LI C, ,I A 2 "1 •. I o glei IN 0 tl1/4 1 vaiiO irn o g 4 a • p N/ 7f k 10. a 30 -P..413,0' w o;1 1. 1 �; ■d � l3 I N -.1 P {u wr ' P • b s + W � 111 c a .* I Nil o illi 1 • • 0 fili -1 — 4,0' t5' ,,' 30' 25' ea . Ik ? toI tui JAN-07-'92 TUE 10:25 ID:KING CO REAL PROP TEL NO:206 296-0196 #?24 P02 ---�' • In the mater of the applicat' -- (ID �� to day own,construct, maintu .. `�' �t4C ► gand operate a sewer system. Q '' tA ipOr RANCIII8R NO. 4,24 WI UNION Jam-, y KING COUNTY, WASHINGTON, granting franchise rights to C13? for sewer system installation, maihten- ance and operation: muoimu The application of _ CITY OF N m„Grantee, for a franchise` o lay down, construct, maintain and operate a sewer system along, under and across county roads, streets, avenues, boulevards, alleys and public plaos, hereinaft described, having come regularly to be heard on this 3at.- day of , 19 , and it having been mad `-to appear to the King County Coun , ere na ter Tilled the "Council" that al of the said streets, avenues, boulevards , alleys, public places and public roe and highways lie outside the limits of any incorporated town or city, and that u'due and legal notice of said application and of the hearing thereon has been given by posting and publication, and in the manner and as required by law; and said Counoil having considered said application, and being advised in the u+premises : NOW, THEREFORE, King County, Washington, pursuant t ..duly and regularly enacted by its Council on the eow day of 19 , hereby grants to said p J hereinafter called the Grantee, an o s successorsan ass gns, su eo o all the terms and conditions, hereof; for the term of o?5 ''from the date hereof, the right, privilege, authority and fra ise or itself its successors and assigns, to lay down, construct, maintain and operate a seg► system along, under and across the following county roads, streets, avenues, • boulevards, alleys, public places and public roads , together with all necesear equipment of every sort necessary. sks The location and nature of the franchise being more particularly describe as follows : im (See attached description) +r. • • JAN-07-'92 TUE 10:26 ID:KIN6 CO REAL PROP TEL NO:206 2yb-b1'*b 1:4r24 i• — -w•+'-1, ,' at �� . 60 . . . • All those portions of Sections 3 and 4, Township 23 North, Range 5 East, W.M. described as follows : a • Beginning at a point on the north line of the Plat of Glencoe, according to the Plat recorded in Volume 84 of Plats, Pages 87 & 88, records of King 00 County, Washington 150 feet easterly of the easterly margin of Union Avenue Northeast (132nd Avenue Southeast) ; thence northerly along a line 150 feet easterly of and parallel with said easterly margin a distance of 1 ,350 feet, e0 more or less , to an intersection with the easterly production of the northerly line of the Plat of Sierra Heights, according to the Plat recorded in Volume . 54 of Plats,. Page 3, records of King County, Washington; thence westerly along said easterly extension a distance of 210 feet to the westerly margin of 132nd ow Avenue Southeast; thence northerly along said westerly margin a distance of 821 .24 feet to the north line of the south one-half of the northeast one-quarter of the northeast one-quarter of Section 4, Township 23 North, Range 5 East, W.M.; ei thence westerly along said north line a distance of 1 ,286.11 feet to the wester- ly line of the northeast one-quarter of the northeast one-quarter of said Section 4; thence southerly along said westerly line a distance of 490.71 feet „i to the north line of the south 1 ,320. feet of the east one-half of the northeast one quarter of said Section 4; thence easterly along said north line to a point 400 feet westerly of the east line of said Section 4; thence southerly along a el line 400feet westerly of and parallel with said east line a distance of•180 feet, more or less , to a point 150 feet northerly of the northerly line of the Plat of said Sierra Heights; thence westerly along a line 150 feet northerly of and parallel with said north plat line a distance of 400 feet to a point 150 feet • '* northerly and 150 feet westerly of the northwest corner of Block 1 , Plat of Sierra Heights; thence southerly along a line drawn 800 feet westerly of and ;J` parallel with the east line of said Section 4 a distance of 320 feet to north- ow west corner of Lot 4, Block 4, Sierra Heights; thence easterly along the north line of said Lot 4 a distance of 75 feet to the northeast corner thereof; thence southerly along the easterly line of said Lot 4 a distance of 171 .87 feet_ to the o southeast corner thereof; thence southeasterly to the northwest corner of Lot 5, Block 3, said Sierra Heights; thence southerly along the westerly line of said Lot 5 a distance of 130.76 feet to the southwest corner thereof, also the south so line of said Block 3; thence easterly along the south line of said Block 3 a distance of 529.32 feet to a point 150 feet westerly of the westerly margin of 132nd Avenue Southeast; thence southerly along a line 150 feet westerly of and parallel to the westerly margin 04 132nd Avenue Southeast a distance of 120.00 lii feet to the northerly margin of southeast 103rd Street; thence southeasterly to the northwest corner of Lott 2 , Sierra Heights Division No. 2according to the Plat recorded in Volume 59 of Plats , page 55,. records of King County, Washington; 00 thence southerly along the westerly line of Lots 22 and 52, said Subdivision a distance of 239.81 feet to the southeast corner of said Lot 52, and the norther- ly margin of Southeast 104th Street; thence southwesterly to a point on the southerly margin of Southeast 104th Street 150 feet westerly of the westerly • • 974- l',( • . • :ASO --- -. JAN-07-'92 TUE 10:27 ID:KING CO REAL PROP TEL NU:20b 2yb-01b r4(d4 1-'04 _ • ..! . • . • wr • .. . 2. • ' • V margin of 132nd Avenue Southeast; thence southerly along a line 150 feet , westerly of and parallel with the westerly margin of 132nd Avenue Southeast . 6' . (Union Avenue Northeast) a distance of 640 feet, more or less, to the . northerly margin of Northeast 19th Street (formerly Southeast 106th Street) ; . • thence easterly alongsaid northerly margin a distance of 150 feet to the westerly margin of'said Union Avenue Northeast (132nd Avenue .Southeast) ; thence northerly along said westerly line a distance of 312 feet, more or less, to an intersection With the westerly production of the northerly line of the Mat of Glencoe; thence easterly along said westerly production and the northerly line of the Plat of Glencoe a distance of 210 feet to' the true point of beginning. L LESS that portion of the above described area lying within Lots 2 to 7, • . Block 1 , Lots 2 to 6, Block 2, Sierra Heights, and that portion of Southeast . 101 St. Street adjoining. L • The City of Renton hereby requests .a Franchise for operation of 8" Sanitary Sewer Mains within the following King County Approximi. Streets Named From To _. Distance r ii 132nd Ave. S .E. S.E. 106th St. S .E. 102nd St. 1200 L.F. • S .E. 102nd Si. ' 132nd Ave. S .E. • 130th Ave. S .E. • • • 630 L.F. i it. 130th Ave. S .E. S .E. 102nd St. S .E. 101st St. 300 L.F. i,,, Langston Rd. Existing City 78th Ave. S .E. 1200 L.F. ' Limits of Renton .. Ciiiiiiii'4 • 875 '7 re iii to FRANCHISE NO. el In the matter of the application for a franchise to operate, maintain, repair, and construct SEWER mains and service lines, and appurtenances in, over, along, and under county roads and rights-of-way in King County, Washington. ' llii ry The application of the CITY OF RENTON for a franchise to operate, maintain, repair and construct sewer mains and service lines, and appurtenances in, over, along, and under County roads r and rights-of-way located within the area describ d in attached Exhibit "A" has been heard on this 14-. day of , 19411/ . All of the property described in Exhibit ' " li s outside the limits of any incorporated town or city. Legal notice of the franchise application and of the hearing tri has been given as is required by law. ego The King County Council, having considered the interests proposed and advanced, and finding that the granting of this franchise is in the public interest, ORDERS that a franchise be to granted to the CITY OF RENTON, the Grantee . This franchise grants the right, privilege, authority and franchise to operate, maintain, repair and construct main (s) and service lines and appurtenances ow as a part of its transmission and distribution system in, over, along, and under County roads and rights-of-way located within the area described in Exhibit "A" . rii s e ait Wil 8 75 7 This franchise is granted subject to all of lthp terms and conditions contained within, and shall expire on <I / 11 .2017 Dated this day of •` 6/*yY72yc ' , 19419-, KING COUNTY, WASHINGTON 1r B144,11 imp TITLEDLfcc+71 4h j, , The undersigned accepts all the rights, privileges, and duties of this franchise subject to all terms, conditions, stipulations, and obligations contained within. • CI Y OF RENTON G' EE l‘t BY • TITLE Mayor ATTEST: N QQ n) Nan y J. M is Deputy 4ty Clerk Dated this day of ,a. . Q , • igo 2 8757 Exhibit "A" That portion of Section 4, Township 23 North, Range 5 East, W.M. , King County, Washington being more particularly described as follows : BEGINNING at the northeast corner of the northwest quarter of the southeast quarter of said Section 4; thence southerly along the east line of the northwest quarter of the southeast quarter of said Section 4, a distance of 100 feet more or less to an intersection with the easterly extension of the south line of Lot 6 of theplat of Sierra Heights Division No. 3, according to the plat thereof recorded in Volume 61 of Plats, page 53, records of King County, Washington; thence westerly along said easterly extension and said southerly lot line of Lot 6 to an intersection with the easterly right-of-way margin of 126th Avenue SE; thence continuing westerly along the westerly extension of the south line of said Lot 6 to an um intersection with the southeast corner of Lot 7 of said plat, said point also lying on the westerly right-of-way margin of 126th Avenue SE; thence continuing westerly along the south lot line of Lot 7 said plat of Sierra Heights Division No. 3 to an intersection 44 with the east line of Lot 9 said plat; thence southerly along said easterly lot line to the southeast corner of said Lot 9; thence westerly along the south line of Lots 9 and 10 said plat of Sierra Heights Division No. 3 to the southwest corner of said lot 10; thence northerly along ,the west line of said Lot 10 to the northwest corner thereof; thence continuing northerly along the northerly extension of the westerly lot line of said lot 10, a distance of 30 feet more or less to an intersection with the south line of the northeast quarter of said Section 4; thence easterly along said south line to an intersection with the southerly „o extension of the west line of lot 7, block E of the plat of Albert Balchs Sierra Heights Division No . 5 as recorded in Volume 65 of plats, pages 30 and 31, records of King County, Washington; thence mi northerly along said southerly extension and the west line of lot 7 said plat, said west lot line also being the easterly right-of- way of 125th Ave . SE, to a point lying 24 feet north of, as measured parallel to, the north line of said lot 7; thence easterly along a line lying 24 feet north of and parallel to said north line of lot 7 to an intersection with the east line of said plat; thence southerly along said east line to an intersection with the tit northwest corner of lot 9, block 5 of plat of Albert Balchs Sierra Heights Division No. 4 as recorded in Volume 61, page 18, records of King County, Washington; thence easterly along the north line of said lot 9 to an intersection with the westerly right-of-way margin of 126th Avenue Southeast; thence southerly along said westerly margin to an intersection with the westerly extension of the north line of lot 11, block 2 said plat of Albert Balchs Sierra Heights Division No. 4; thence easterly along said westerly extension of the north line of lot 11 and continuing along said north line and its extension easterly to a point of intersection with the west 3 r r - 8757 line of lot 19, block 2, said plat; thence northerly along said westerly line to the northwest corner of lot 12, block 2 said plat; thence easterly along the north line of said lot 12 to the - northeast corner thereof, said point also lying on the westerly right-of way margin of 128th Avenue SE; thence northerly along the westerly right-of-way margin of 128th Avenue SE to a point of intersection with the westerly extension of the north line of block 4 of the plat of Sierra Heights as recorded in Volume 54 of plats, page 3, Records of King County, Washington; thence easterly along said westerly extension and the north line of said block 4 to the ti•` northeast corner of lot 5, block 4 said plat; thence southerly along the east line of said lot 5, block 4, and its southerly extension to an intersection with the south line of block 3 said plat; thence westerly along said south line to the southeast corner of lot 1, block 3 said plat; thence north along the east line of lot 1 said plat to the northeast corner thereof, said point also lying on the southerly right-of-way margin of SE 102nd Street; IOW thence westerly along the north line of said lot 1, and said southerly right-of-way margin, to the northwest corner thereof, said point also being a point on the east line of lot 6 of plat of 'a' Sierra Heights Division No. 2 as recorded in volume 59 of plats page 55; thence northerly along said east lot line of lot 6 to the northeast corner thereof; thence westerly along the north lines of t„ lots 4, 5 and 6, said Division No.2, to an intersection with the easterly right-of-way margin of 128th Avenue SE; thence southerly along said easterly right,-of-way margin to a intersection with the north line of the southeast quarter of said Section 4; thence oir westerly 30 feet more of less to the POINT OF BEGINNING. OW • WO r ' wr +rr 4 ea, • April 25, 1996 FRANCHISE NO.122 6 7 In the matter of the application for a limited franchise to operate, maintain, repair and construct sewer mains and service lines and appurtenances in, over, along and under County roads and rights-of • - way in King County, Washington. . +wr The application of the CITY OF RENTON for a franchise for the sole purpose and use of operating, maintaining, repairing and constructing a pumped two and one-half inch (2 1/2") sewer service line, and appurtenances to serve the Maplewood Heights Elementary School in, over, along and under County roads and gr' hts-of-way located within the area described in attached Exhibit "A" has been heard on this f.3 day of hi[ 19 17 . All of the property described in Exhibit"A" lies outside the limits of any inrporated Town or City. ii • Legal notice of the franchise application and of the hearing has been given as is required by law. • 5 S The King County Council, having considered the interests proposed and advanced, and finding . that the granting of this franchise is in the public interest, ORDERS that a limited franchise be granted to the CITY OF RENTON,the Grantee. This limited franchise grants the right, privilege,authority and franchise to operate, maintain, repair and construct only the following: a pumped two and one-half inch(2 1/2")sewer service line to serve the Maplewood Heights Elementary School and appurtenances only in, over, along and under County roads and rights-of-way located within the area described in Exhibit"A". Connections in this line by parties other than the Maplewood Heights Elementary School �rw are not permitted. This limited franchise is granted subject to all of the terms and conditions contained within, and shall expire upon the earlier to occur of May.3. , 2021 or the provision of permanent sewer service to the Maplewood Heights Elementary School by the permanent sewer service provider. Permanent sewer extension fees and special facility charges shall be paid to the authority providing permanent service according to its applicable rules and regulations. S S w ' 12267 MP • 5/13/96 clerk vim Nothing in this limited franchise shall be construed to be in derogation of or otherwise affect any rights granted in Motion No. 2188, granted October 6, 1975 granting a Franchise to King County Water District No. 90, including especially the Water District's rights to provide permanent sewer service to the Maplewood Heights Elementary School or any other properties within the boundaries of said franchise. NO r DATED this day of , 1996. , , G COUNTY, WASHINGTON By • Title The undersigned accepts all the rights, privileges, and duties of this franchise subject to all terms, conditions, stipulations, and obligations contained within. qam • CITY OF RENTON GRANTEE B MIN Y sse Tanner Title :.mayor Dated this // moi, day of 440. At/ , 1996. 410 • ATTEST./ v, A Marilyn . dtersen, City Clerk a 12267 a EXHIBIT A City of Renton Sewer Franchise Legal Description Beginning at corporate boundary of the City of Renton also known as that portion of Southeast 128th Street located in the southeast quarter of Section 10,Township 23, Range 5 east and the northeast quarter of Section 15,Township 23, Range 5 East ,extending to a point where it intersect with the east margin of 144th Avenue Southeast located in said Sections 10 and 15, thence south along said street to its intersection with the north margin of Southeast 136th Street all being located in the northeast quarter of Section 15,Township 23,Range 5 East.. a a S a a a w a roo :s{ a r: 41) CAG-99-014 CITY OF RENTON & CEDAR RIVER WATER AND SEWER DISTRICT FOR THE ESTABLISHMENT OF SERVICE BOUNDARIES THIS AGREEMENT is entered into this 8th day of February 19 99, by and between CEDAR RIVER WATER AND SEWER DISTRICT, a Washington municipal corporation, hereinafter referred to as "CRWSD", and the CITY OF RENTON, a Washington municipal corporation, hereinafter referred to as "RENTON". WITNESSETH: WHEREAS, CRWSD 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 areas; and WHERE, 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, IT IS HEREBY AGREED by and between the parties hereto as follows: O 1. Water Service Area Boundary Between RENTON and CRWSD. The attached Figure "A" illustrates the line separating the RENTON water service area from CRWSD water service area. RENTON shall provide service for the area generally North and West of the line illustrated. CRWSD shall provide service for the area generally South and East of the line illustrated. Any new construction, upgrading, or replacements within the RENTON City Limits by CRWSD for water service shall be in compliance with RENTON design and construction standards then in effect or CRWSD design and construction standards, whichever are the higher design and construction standards including: materials, techniques, and fire flow. 2. Sewer Service Area Boundary Between RENTON and CRWSD. The attached Figure "B" illustrates the line separating the RENTON sewer service area from CRWSD sewer service area. RENTON shall provide service for the area aip generally North and West of the line illustrated. CRWSD shall provide service for the area generally South and East of the line illustrated. Any new construction, upgrading, or replacements within the RENTON City Limits by CRWSD for sewer service shall be in compliance with RENTON design and constructions standards then in effect, or CRWSD design and construction standards, whichever are the higher design and construction standards including: materials and techniques. 3. Maintenance of Existing Facilities: CRWSD and RENTON will each maintain their own facilities, according to industry standards. 4. DISTRICT Comprehensive Water and Sewer Planning. CRWSD will submit, to RENTON, all future Comprehensive Water and Sewerage Plans and amendments thereto involving area and/or improvements within RENTON City Limits. Said submission of the CRWSD Plan(s) is to assure consistency withvoi adopted city plans, policies, and land use controls, assist in the review of new development proposals and right-of-way construction permits, and to fulfill the ego responsibilities set forth in RCW 57 and King County Title 13. As new facilities are planned, constructed, maintained, and/or replaced within RENTON, they shall comply with RENTON design and construction standards then in effect, or CRWSD design and construction standards, whichever are the higher design and construction standards. 5. Extension of Utilities Across Properties. RENTON and CRWSD agree that they will require property owners who must extend facilities to service their property in a comprehensive fashion up to and including extending said facilities to the far side of the property, when appropriate, to provide a connection point for the future (or existing) facilities of the next property. 6. Franchise Agreement. Upon RENTON annexing property within the CRWSD service area, RENTON shall grant CRWSD, for the purposes of continuing use of rights-of-way, a temporary franchise for utility facilities within the annexed territory. This franchise shall have the same provisions as stated in the franchise between King County and CRWSD and have a term not to exceed 3 (three) years. RENTON and CRWSD will immediately begin negotiations for a new franchise for the purposes of rights-of-way use for CRWSD service area within RENTON. The new franchise shall be negotiated within three years. Upon any subsequent annexations by RENTON within the CRWSD service area, RENTON shall amend the franchise to include the annexed area, in order to maintain one franchise agreement. The franchise shall maintain the remaining balance of the term of the franchise. The franchise should include any updated provisions as approved by RENTON and agreed to by CRWSD. Any franchise agreement issued hereunder shall be consistent with the ,, respective comprehensive plans of the parties and State law. 7. Governmental Approvals. The parties will give notice of the adoption of this Agreement to Metropolitan King County, to the Department of Ecology, to the Department of Health, and to any other agency with jurisdiction, and shall cooperate and assist in any reasonable manner in procuring any necessary approvals hereof by those agencies. 8. Sanctity of Agreement. This Agreement constitutes the entire agreement of the parties, concerning the subject matter herein, 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 identify, agree upon, or transfer service areas and/or facilities. This Agreement shall have a term of 25 (twenty-five) years. 9. Obligations Intact. Nothing herein shall be construed to alter the rights, responsibilities, liabilities, or obligations of either CRWSD 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 8th day of February , 199 9 . Authorized by Resolution No. P5,71 of the City Council of the City of Renton, Washington, at its regular meeting held on 8th day of February 199 9. OF RENTON sse Tanner, Mayor Dat •TTEST: Marilyn J. et- n, City Clerk Dat• APPROVE TO LE �M'j 0A,ti,ArmeF,P Lawrence J. Warren, City Attorney Approved by Resolution No. 3740 / of the Board of Commissioners of CEDAR RIVER WATER AND SEWER DISTRICT of King County, Washington, adopted at its regular meeting held on 19th day of January , 199 9 . CEDAR RIVER WATER AND SEWER DISTRICT am By: Title: VIM OW eat r -. . ... : ____. /2„,. � \� ';1.� h10 I amu- r ' ' ,/,,; ,,,,.., 0 1 , +i-�-- r_ ----, „,, ....,,,,.._ , „,,,, / S' j `\\\. \ �\\\�� '`,'‘:-...";\.\�` . F^^� \\\\\\`\\\\\\ \- \=ate�,`. .......ti .\, yr`. \.,c, k-:,,'-Ns `\ \\\�\\ \\\ \�\ \\\ GRAPHIC SCALE Fr-,---2, -.,;07. ` ,.\"..,.,,,` . \\\ `\\~\\ \\ \\ \ � \\\\\ 2000 0 2000 4000 __-k :. ,\�t�ti� ;i's\\\ �\ • \\ \\�\. \ \ \\ I. NM= Millinli �•` c; \,c\�=��\ \\\\��\`~`4 \ \ \\ ( IN FEET ) i---7,---;--_-- \\ti, \ \\,j ., , •,,, S'%. \\�, \. \�. N. \• LEGEND -b. �\ , ,.�\.\ ��\�\ .,,�,\ \�\�� ;\ t��C�� \ 1 j j \ �. WATER SERVICE AREA BOUNDARY `\� '\`�`+.J�laa \` \\\\` � ''. \l�c'A��•\ RENTON CURRENT CITY LIMITS (IN PART) '1:7----7---------=--- 7?' 1 . s I _ \� ? \\ KING COUNTY URBAN GROWTH BOUNDARY e =;= \\\\\� (INPART) `i T, .k --- � Cis ,x, '•..iA-�d- m i�ria � i /� 7.7.-- ---: \ �g CRWSD WATER SERVICE AREA • � i � 1-...Bon_efdacY=, - __5K _ ';, .•:',..:;‹..' _. \ v. �\\\\ _ _. �:a arrc 1�—mac, � _ I , C 4- —Fa1.;,\::.,,,X,...\ \ti\�\\\\ \ \ \\ pia.`.E3=iF- •...z.J::.._y gip'.`;` 4`` \\\ !•� _ ^`` i 's CRWSD / RENTON r. \ �,:::::.---.1:,-_-..---_,�� _ \ \ \ MAN RIVEN r.ra•scscs ti-, , i \ INTERLOCAL AGREEMENT T'�� '7 � - .na...nn• -- f1Wti y / 0iks Pl.nntne __\ar \ A_-,1:-''',2-1- L PejKb(� '""'n WATER SERVICE 1 —— — I PenheUegon Associates Conaulling Engineers. Inc. `\\ }�.1;;..:!//> ..',::..� - r•”"Si', n..vein ww...w»i Iwl w-s. i {�-_i !�' ti�'J --- = FIGURE A 1 I I I I I I I I I I 1 I I I I I t • /�/ /�/ - rcr .- .� _. � ' ^.l__'T .� / jjj� il , //,',X,'1''/• ./ i/// for 4r4- 200002000 \\ , 4000 �' :_ �` \fit \ \!;�\ ' __i• I I a_ .. - • %�\��`\e�� `:� Cedar ;,- - Lx.� ` �\\\ � \-,- _:,..„,‘`\\\\ \\`\\�\\ • 1 1 'Water =1EEcE IN FEET ) 4 N%--,. ti\\\�I0:--:-,\�:� 1- -` r Ditr_'icti LEGEND 14 j 1 = - \ �\ "� • \ �� `�• • SEWER SERVICE AREA BOUNDARY \��\�\�„� \\t� ��„t - ylr', � V/��G RENTON CURRENT CITY LIMITS (IN PART) j j' IS, \•• 2 - �\ a—_,_,..:4-.. �� F__ = �� ........ KIN URBAN GROWTH BOUNDARY — —y I saA: C COUNTY �I INT!!' !4. •* •••.4 r' ''''`.'• •ai •r i=!1 , ,EE'i �j I'I;---Hz, ,,,;_ ��•'R_�Fss4g,;• ”, • _• �.-- � -fit i N \�� CRWSD SEWER SERVICE AREA (IN PART) _/�\\ mq• '.,M a, , :.r'"•. mule \\ • iFzI7 �'" "e •ft4�ae, :errs�—. \\�1\., si -4 Oink �...1:7,..... ��•• S:':.. `�_ •nmol •�.- -r•�.-..•w-r.�:�.- . JOtL`d N/ll� ::A. 'R,' _ ;�.3 �{--- '�-�ca-1 �e\y \ �.HfgJ nll rA _� -" !� sto \ \ k CRWSD / RENTON �. —, ,=. ` CED 1•W�,. OCAL J rte..:. —1 �r IN TERLT < :� ;, r; AGREEMENT rJ I, I .1 1!RT -j Penhsl •ogon Associates Consulting Engineers. Inc• \\\\ /,.' { r { = 4 _ �. r�t:� L. .••son.,et o......... t..,«. 1. y� SEWER SERVICE ` — FIGURE B r 1--- i i L Appendix C SEPA Checklist L L L L L L L 60' ow .` ; 0 q"" t ` t CITY OF RENTON 't , V 6, ' f G 1i s.Sr. i a ax x ,r," :t va x a a3 x, x �, a• 3 Yy k ;i' DEVELOPMENT SERVICES D1VIS(ON - N# > mos r ,, �,. -a x�. a` ��t ria e1 4 4 .,, , x r ut a xx>, ''''' , ,-: :'''';' ,:-IE,I.N;i, 11• ® sT M NTLC1I CKL1ST �+�£ 'k i .'�3"{ 7 zap �$A. g R s ti P es t � O ? ,',541e0--,5 a o• 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 probable significant adverse impacts on the ow 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. up 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. to 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 impact. wr USE OF CHECKLIST FOR NONPROJECT PROPOSALS: Complete this checklist for nonproject proposals, even though questions may be answered "does not ■r apply." IN ADDITION, complete the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (part D). For nonproject actions (actions involving decisions on policies, plans and programs), the references in the • checklist to the words "project," "applicant," and "property or site" should be read as "proposal," "proposer,"and "affected geographic area," respectively. es 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist A. BACKGROUND 1. Name of proposed project, if applicable: City of Renton 1998 Long-Range Wastewater Management Plan 2. Name of applicant: City of Renton -Wastewater Utility 3. Address and phone number of applicant and contact person: 1055 South Grady Way Contact: Mike Benoit-(425)430-7206 Renton,WA 98055 4. Date checklist prepared: ori October 20,1998 5. Agency requesting checklist: City of Renton 6. Proposed timing or schedule (including phasing, if applicable): The 1998 Long-Range Wastewater Management 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 Long-Range Wastewater Management Plan will be adopted in early 1999. It will be further supplemented or updated on a regular basis or more often if needed. 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. Yes, the City plans to supplement or update the Long-Range Wastewater Management Plan on a regular basis or more often if needed. This study recommends that the plan be updated in 2004. ool 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. el The City of Renton has completed, for its Comprehensive Plan, a DEIS (1992), an FEIS (1993), and an SEIS (1995). In 1998, King County Water District 90 prepared an environmental checklist for their proposed 1998 Comprehensive Sewer System Plan. Each of the projects identified by this plan is subject to SEPA regulations. Depending on the scope of project, each will have its own environmental checklist and determination which would be completed as specific projects are proposed for construction. ++ 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. King County Water District # 90 has prepared a Draft 1998 Comprehensive E:\96comp\SEPA98.doc\MAB -2- a virit 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist Sewer Plan. With this plan they are proposing to become a Sewer service provider within Renton's Urban Growth Area. This area is included in the Renton plan as an area we intend to provide sewer service to. imp 10. List any governmental approvals or permits that will be needed for your proposal, if known. The 1998 Long-Range Wastewater Management Plan will need to be approved by the °"r Renton City Council and the Washington State Department of Ecology. The King County Utilities Technical Review Committee (UTRC) will review the plan and make recommendations to the Executive and County Council as to the consistency of such items with adopted county policies and codes. King County will review and approve franchises to allow the construction of sewer facilities in county rights-of-way. 11. Give brief, complete description of your proposal, including the proposed uses and the size of the project and site. The 1998 Long-Range Wastewater Management Plan addresses policies, criteria, assumptions and recommendations for the City's planning area. The major purpose of the Plan is to provide a long range plan for facility improvements necessary to serve the estimated population at saturation. The Plan addresses facility reliability, public health, groundwater and environmental protection, operation and maintenance, and financing issues. The plan also addresses the need to expand Renton's sewer service area into its Urban Growth Area as the appropriate provider of the urban service per the King County Countywide Planning Policies. This checklist does not address the specific projects addressed in the five year capital improvement program. This is a programmatic checklist and does not address any site specific conditions. These conditions as well as the associated impacts will be discussed in the SEPA reviews of each 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 topographic 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. IMO The area covered by this comprehensive sewer system plan is the sewer service area as shown in Figure 6. Renton has entered into boundary agreements with most of the sewer service providers adjacent to the City. These service boundaries are established and are not generally altered by annexations. Per the Countywide Planning Policies, Renton intends to provide sewer service to the portion of our Potential Annexation Area that receives water service from Water District#90. B. ENVIRONMENTAL ELEMENTS 1. EARTH a. General description of the site (circle one); flat, rolling, hilly, steep slopes, mountainous, ar other The forces of glaciation during the last million years fundamentally shaped the geologic characteristics of the proposed service area's natural landscape. As the E:\96comp\SEPA98.doc\MAB -3- tit 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist 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 flood plain of the Green River Valley, and determined the original routes of the Cedar River,Green River,and May Creek. The modern result is several water courses with narrow to wide flood plains adjacent to steep banks up to rolling hilly plateaus. ri b. What is the steepest slope on the site(approximate percent slope?) The proposed service area contains numerous slopes within the ranges 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, clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, 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 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. ors Many of the major valleys and shoreline bluffs in the proposed service area are bordered by steeply sloping unconsolidated glacial deposits that are highly susceptible tom gravity sliding. e. Describe the purpose, type, and approximate quantities of any filling or grading proposed. Indicate source of fill. tri 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 an appropriate quality, we will import backfill from an approved source. Any imported 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. a Minor erosion may result during construction of program projects. Standard erosion control measures will minimize any impact from the minor erosion. a 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. a E:\96comp\SEPA98.doc\MAB -4- Igo 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist 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 set forth in the City's adoption of the King County Surface Water Manual, King County Erosion Standards, 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 or odor that may affect your proposal? If so, generally describe. art Potential vehicular emissions may result during the ongoing maintenance functions of the system by City staff. All City vehicles must meet Sate 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 Long-Range Wastewater Management Plan, the construction of those projects will meet all City or County codes including emissions control. 3. WATER a. Surface Water: �.r 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. There are several streams and rivers in the area. In the northern portion of the proposed service area there is May Creek, a Class 2 stream (with salmonids) which flows into Lake Washington. There are several unclassified streams that flow into May Creek. Maplewood Creek flows from the East Renton Plateau to the Cedar River. The lower portion of Maplewood Creek is a Class 2 stream (with salmonids). The upper portions are unclassified. A short run of Madsen Creek, a Class 2 stream (with salmonids), enters the proposed service area prior to entering the Cedar River. E:\96comp\SEPA98.doc\MAB -5- 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist The Cedar River is a class 1 stream that flows through the Middle of the proposed ei service area and discharges into Lake Washington. In addition to the class 2 streams mentioned above, there are several unclassified streams that flow into the Cedar from the East Plateau portion of the the service area. Panther Creek is a Class 2 stream (with salmonids). There are a couple of unclassified streams that flow into it in the service area. Panther creek is a tributary to Springbrook Creek Springbrook Creek is a Class 2 stream (with salmonids) as it flows north through Renton. As it crosses north under Grady Way it becomes a class 1 stream. Springbrook is pumped into the Green River, which eventually flows into Puget Sound. • According to King County Sensitive Areas Map Folio (1990) and City of Renton Critical Areas Inventory (Jones & Stokes Associates — June 1991), there are approximately 50 wetlands in the proposed service area. Wetlands that are 20 acres or larger that are identified within the study area are: Name Type Springbrook Palustrine forested wetland S Panther Creek Palustrine forested wetland/ Palustrine emergent wetland Black River Riparian Palustrine forested wetland Black River Tract C Palustrine forested wetland/ Palustrine scrub-shrub wetland East Valley B Palustrine emergent wetland/ Palustrine scrub-shrub wetland East Valley F Palustrine emergent wetland 1 Palustrine scrub-shrub wetland o Renton Palustrine emergent wetland Long Acres Palustrine emergent wetland ,r W-24 Palustrine forested wetland I (report lists as 10 acres—Map Palustrine scrub-shrub wetland shows much larger) May Creek 5 Palustrine emergent wetland I (small portion in service area) Palustrine scrub-shrub wetland yak Lower Cedar River 150 Palustrine forested wetland S May Creek 5 Palustrine emergent wetland/ (small portion in service area) Palustrine scrub-shrub wetland to E.\96comp\SEPA98.doc\MAB -6- 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist For the smaller wetlands in the proposed service area please reference the above mentioned documents. 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 the issue in the SEPA and Shoreline Permit Review of the individual project. All City or County 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 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. NMIAny 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 or County codes, as well as any outside agency requirements, will be met as provided in the SEPA finding. err 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 t"' waters in the event a failure occurs. 5) Does the proposal lie within a 100-year flood plain? If so, note location on the site plan. wir Within the proposed service area there are 100-year flood plains along several streams, including but not limited to Cedar River, May Creek, and Springbrook Creek. Portions of specific projects may be located within a 100-year flood plain. These projects will address this issue in the SEPA review of the individual projects. All City or County codes, as well as any outside agency requirements, will be met as provided in the SEPA finding. 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 or County codes, as well as any Witoutside agency requirements,will be met as provided in the SEPA finding. 0110 E:\96comp\SEPA98.doc\MAB -7- rr rei 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist b. Ground Water: 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 failure of Renton's sewer system, and allowing for 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 or County 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 improvement projects will be subject to City or County 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. ow 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 the SEPA review of the individual project. All City or County codes, as well as any outside agency requirements, will be met as provided in the SEPA finding. E:\96comp\SEPA98.doc\MAB -8- 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist +■ 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 rr X shrubs X grass X_ pasture crop or grain X wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other or X water plants: water lily, eel grass, milfoil, other 41110 X other types of vegetation b. What kind and amount of vegetation will be removed or altered? imp 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 IMP individual project. All City or County codes will be followed and any necessary removal will be mitigated at the time of application. ,,,W 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. rr d. Proposed landscaping, use of native plants, or other measures 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. r .w E:\96comp\SEPA98.doc\MAB -9- +00 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist 5. ANIMALS siP 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: es 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: et Threatened or endangered species will be avoided, relocated or replaced wherever possible. tei Birds: hawk, heron, eagle, songbirds, other Mammals: deer, bear, elk, beaver, other Fish: bass, salmon, trout, herring, shellfish, other b. List any threatened or endangered species known to be on or near the site. up 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 ar 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. iri 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". As identified in the May Creek Current and Future Conditions Report (August 1995), May Creek and some of it tributaries support five species of salmonids, "re including Chinook, Coho,Sockeye, Steelhead,and Cutthroat Trout. The entire State of Washington is included within the Pacific flyway migration r,ri 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 or County codes, as well as any el outside agency requirements,will be met as provided in the SEPA finding. E:\96comp\SEPA98.doc\MAB -10- 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist 411110 6. ENERGY AND NATURAL RESOURCES a. What kinds of energy (electric, natural gas, oil, wood stove, solar)will be used to meet the ego 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 gas powered emergency generators to power stations in case of an electrical failure. srrr 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 N„ 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 wr of fire and explosion, spill, or hazardous waste, that could occur as a 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 +r. 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. 1) Describe special emergency services that might be required. The Wastewater Utility's Maintenance Division and City's Emergency Services Departments are on call, 24 hour a day, to address any emergencies that may occur. OM Ole E:\96comp\SEPA98.doc\MAB -I i- 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist 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 station, and design loading or design period of our sewer +r facilities, intended to reduce this possibility to the absolute minimum. b. Noise 1) What types of noise exist in the area 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 or County codes including those regulating noise. 8. LAND AND SHORELINE USE a. What is the current use of the site and adjacent properties? rir Current land uses within the area of this study vary from heavy industrial to single family residential to vacant. w 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 or County codes, as well as any outside agency requirements, will be met as provided in the SEPA finding. ` c. Describe any structures on the site. oat Structures vary throughout the project are from residential to industrial. This includes single family, multi-family, commercial, retail, office, light manufacturing and heavy manufacturing. lei r E:\96comp\SEPA98.doc\MAB -12- r 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist d. Will any structures be demolished? If so,what? When eliminating or replacing a lift station, the structure housing the station may be demolished. Demolition of any other structures for or during the construction of any 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 or County 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 1995 City of Renton Comprehensive Plan (as ammended) designates land use within the City limits. The remainder of the program planning area, which is in +ti. unincorporated King County, uses the 1994 King County Comprehensive Plan (as ammended) to designate land use. All of the study area in unincorporated King County is designate "urban". Three Community Plans, New Castle (1988), Soos Creek (1991), and West Hill (1994) were used as additional information in the County areas. g. If applicable, what is the current shoreline master program designation of the site? rr 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 or County codes, as well as any outside agency requirements,will be met as provided in the SEPA finding. i"" h. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. .r 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 by such resources as the King County Sensitive Areas Map Folio (1990) and City of Renton Critical Areas Inventory (Jones & Stokes Associates [1991], GeoEngineers [1991],and David Evans &Associates [1992]). These projects will be addressed in the SEPA review of the individual project to "W" determine the alternative with the least environmental impact. All City or County codes, as well as any outside agency requirements, will be met as provided in the SEPA finding. rrr Approximately how many people would reside or work in the completed project? Presently,the City of Renton Sanitary Sewer System services approximately 11,000 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 +�r E:\96comp\SEPA98.doc\MAB -13- rrr 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist use) and the necessary sewer system is in place, we project approximately 20,000 a 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: es This proposed Comprehensive Sewer System Plan was prepared to be consistent with the City's and County's Comprehensive Land Use Plans and with the comprehensive sewer system plans of each adjacent municipality. The Wastewater Utility will maintain coordination with the City's 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 (1995) City Land Use Plan. Any housing units constructed concurrently or subsequently to projects identified in this study will be per adopted City of Renton Land Use Plans and Polices. 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 el or any subsequent projects. c. Proposed measures to reduce or control housing impacts, if any: a 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 er E:\96comp\SEPA98.doc\MAB -14- 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist 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. b. What views in the immediate vicinity would be altered or obstructed? 410 Views of project areas would be altered during construction due to clearing, excavation and staging activities. It is not anticipated that any public views would be permanently blocked. +r�r 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 or County codes, as well as any outside agency requirements,will be met as provided in the SEPA finding. 11. LIGHT AND GLARE a. What type of light or glare will the proposal produce? What time of day would it mainly occur? 00 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. 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 Y. any lighting over 300 watts is used, it will be shielded to prevent light and glare impacts on the adjacent residents. 12. RECREATION wr 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 center, and the Maplewood Golf Course), King County (such as parks and trails), the Renton School District (play fields), Issaquah School District (play fields),and private parties(beaches and docks). b. Would the proposed project displace any existing recreational uses? If so, describe. E:\96comp\SEPA98.doc\MAB -15- vs 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist We do not anticipate any permanent impacts to existing recreational usage. 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. tir, 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 or County 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 rr existing street system. Show on site plans, if any. The Transportation System within the study area consists of major transportation corridors, arterials, City streets, County streets and local access roads. The major transportation corridors include Interstate 405, State Route 167 (Valley Freeway), State Route 169 (Maple Valley Highway), State Route 900 (Sunset Highway), and State Route 515 (old 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. There are currently over twenty public transit routes interlacing the proposed service area. Some portions of the area are well supported by bus routes. Other areas do not have transit support in close proximity. ail E:\96comp\SEPA98.doc\MAB -16- 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist c. How many parking spaces would the completed project have? How many would the project eliminate? gia 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 or County 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 or County codes, as well as any outside agency requirements,will be met as provided in the SEPA finding. 16. UTILITIES IMOa. Circle utilities currently available at the site: electricity, natural gas, water, refuse service,telephone, sanitary sewer, septic system, other: cable Oil E:\96comp\SEPA98.doc\MAB -17- v�r NO 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist 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 bes - y knowledge the above information is true and complete. It is understood •- .. le-. agency ay withdraw any declaration of non-significance that it might issue in r- '-nce upo is checkf:t ould there be any willful misrepresentation or willful lack of full dis o - - on 'art. Proponent: _ Asir Name Printed: David M. Christe sen Date: , G 0 rrY Oil a a E:\96comp\SEPA98.doc\MAB -18- a 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist D. SUPPLEMENTAL SHEET FOR NON-PROJECT ACTIONS (This sheet should only be used for actions involving decision 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? rrr This Comprehensive Sewer Plan is a long range proposal and documentation of operation policy, design criteria, and recommended facility improvements. It will i, 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. A sewer system that is properly designed, constructed, and maintained should have, during it's useful life, a minimal likelihood to discharge to water; emissions to air; production, storage, or release of toxic or hazardous substances. While we can not eliminate natural disaster or human error impacts to the system, following proper engineering, construction and maintenance practices, as identified in this plan,should minimize the potential of impacts. If there is a spill or discharge, the City will follow Department of Ecology cleanup and reporting guidelines. Proposed measure to avoid or reduce such increases are: 16 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 in Sections B.4 and B.5 of this checklist. Proposed measure 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 issued in the SEPA review of the individual project. till E:\96comp\SEPA98.doc\MAB -19- IMP 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist 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 or County 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 or County 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, die 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 environmentally 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 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. a E:\96comp\SEPA98.doc\MAB -20- r1 VW 1998 City of Renton Long-Range Wastewater Management Plan Environmental Checklist 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 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. 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 r is expected to continue providing as the City develops. This Plan addresses the ii 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 than 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: wr This Plan addresses the increased demand put on the sewer utility by development in and around the City and what is foreseen as development 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. 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 I- -•. cy may withdraw any declaration of non-significance that it might issue in r- e u•• this ch- kli ,� hould there be any willful misrepresentation or willful lack of full di • os re o i y part. / Proponent: Name Printed: David M. C iste se Date: E:\96comp\SEPA98.doc\MAB -21- iii CITY OF RENTON ii DETERMINATION OF NON-SIGNIFICANCE Ili i APPLICATION NUMBER: LUA-99-002,ECF ori APPLICANT: City of Renton WasteWater Utility (David Christensen) PROJECT NAME: City of Renton 1998 Long Range WasteWater Management Plan DESCRIPTION OF PROPOSAL: City of Renton proposes to adopt a Long Range Wastewater Management Plan which addresses policies, criteria and recommendations needed to construct, maintain and manage the City's Wastewater Utility for full build-out under the current Comprehensive Land Use Plans. The proposal is a non-project ta action. Individual projects under the Wastewater Plan would be subject to environmental review. LOCATION OF PROPOSAL: City Wide wo LEAD AGENCY: City of Renton Department of Planning/Building/Public Works Development Planning Section iii This Determination of Non-Significance is issued under WAC 197-11-340. Because other agencies of jurisdiction may be involved,the lead agency will not act on this proposal for fourteen (14) days. iii Appeals of the environmental determination must be filed in writing on or before 5:00 PM March 1, 1999. Appeals must be filed in writing together with the required $75.00 application fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98055. Appeals to the Examiner are governed by City of Renton Municipal Code Section 4-8-11 B. Additional information regarding the appeal process may be obtained from the Renton City Clerk's Office, (425)-430-6510. - do PUBLICATION DATE: February 15, 1999 iiii DATE OF DECISION: February 09, 1999 SIGNATURES: isi 0 21611fme an, AdministratorDAT / 9ct IliDepartmt f Planning/Building/Public Works c;21775, inn Shepherd, Admi istr for DAT I Community Services Departmentiii i i ' , / e ( Z/9/P7 Lee Wheeler, Fire hief� DAT Renton Fire Departmen r ei 1 1 1 I 1 1 1 I I 1 1 I I 1 I I I I I AFFIDAVIT OF PUBLICATION Charlotte Ann Kassens first duly sworn on oath states that he/she is the Legal Clerk of the SOUTH COUNTY JOURNAL 600 S. Washington Avenue,Kent,Washington 98032 NOTICE.OF ENVIRONMENTAL DETERMINATION ENVIRONMENTAL REVIEW COMMITTEE a daily newspaper published seven (7)times a week. Said newspaper is a legal RENTON,WASHINGTON newspaper of general publication and is now and has been for more than six months The Environmental Review i Committee Non- prior to the date of publication, referred to, printed and published in the English language (ERC)caace issued following pr ject under continually as a daily newspaper in Kent, King County, Washington. The South County the authority of the Renton Municipal Journal has been approved as a legal newspaper byorder of the Superior Court of the cod9' g p P 1998 WASTEWATER MANAGEMENT State of Washington for King County. PLAN The notice in the exact form attached,was published in the South County LUA-99 00 ton p City of Renton proposes to adopt a Long Journal(and not in supplemental form)which was regularly distributed to the subscribers Range Wastewater Management Plan during the below stated period. The annexed notice, a which addresses policies,criteria and rec- ommendations needed to construct,main- tain and manage the City's Wastewater 1998 Wastewater Mgt Plan Utility for full build-out under the current Comprehensive Land Use Plans. Location: City Wide. • as published on: 2/15/99 Appeals of the environmental determina- tion must be filed in writing on or before The full amount of the fee charged for said foregoing publication is the sum of$51.75 5:00d inPMarch 1, then Appeals qut ed filed in writing together with the required Legal Number 5731 $75:00 application fee with:.'Hearing Examiner, City of'Renton, 1055 South . Grady Way,Renton,WA'98055.Appeals to the Examiner are governed by, City of /r , , / �.. 1._ _ �:�_ ,_ :i Renton Municipal CodeeSection'4-8-118: Legal Clerk, SOUL CountyJournal Additional information regardiogIhe appeal 9 process May bfobt l ied frbrirtPft Renton City Clerk a ice (425)-430-6510 Subscribed and sworn before me on this S of �1 .8 5 5 bruars n:d. the South Cofmt�Journal day 19 Februarg5ar_999 5731 C�+O�tiSii?PPPl; NI . ora eta ra. F��ri,.o� ► '_. LIA.... L0. .. i1 :::,.....-P�• -�*'•'J `�'-i •��' Notary Public of the State of Washington :.-. .T:`=. Teo T a n,y " residing in Renton __6� = King County, Washington P,: FC LNC'o�.o ire L Appendix Bibliography ON CITY OF RENTON 1998 LONG-RANGE WASTEWATER MANAGEMENT PLAN +rr BIBLIOGRAPHY ari CITY OF RENTON LONG-RANGE WASTEWATER MANAGEMENT PLAN. RH2 Engineering, P.S. (1992) COMPREHENSIVE SEWER PLAN, King County Water District Number 107. Yoshida, Inc. (October 1988) wr SEWER COMPREHENSIVE PLAN, King County Water District No. 90. Hedges and Roth Engineering, Inc. (1998) 1991 SEWER SYSTEM COMPREHENSIVE PLAN, Cedar River Water and Sewer District. Hugh G. Goldsmith& Associates, Inc. (November 1991) COMPREHENSIVE SEWAGE PLAN, Soos Creek Water and Sewer District. Hedges and Roth Engineering, Inc. (1996) WASTEWATER FACILITIES PLAN, City of Kent. URS Company(March 1977) COMPREHENSIVE SEWER PLAN,City of Tukwila. Horton Dennis & Associates (1991) wir COMPREHENSIVE SEWAGE SYSTEM PLAN, Skyway Water and Sewer District. Richard Carothers Associates, Ltd. (January 1994) +rr "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,Grower, 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 r D.M. Hadley(1986) WATER AND WASTEWATER RATES MANAGEMENT ANALYSIS. RH2 Engineering, P.S. (November 1989) COMPREHENSIVE RATE STUDY, WATER, WASTEWATER, AND SURFACE WATER UTILITIES. Economic and Engineering Services, Inc., (January 1994) NO KING COUNTY REGIONAL WASTEWATER SERVICES FINANCING PLAN. Gibson Economics, Inc. (April 1998) CITY OF RENTON INFILTRATION/INFLOW PROGRAM Brown and Caldwell (March 1995) tos BIBLIOG.DOC\ 16 \< 44,041 4 *.o 03 Long-Range Wastewater Management Plan A Comprehensive Sewer System Plan - 1998 Volume - 2 East Cedar River Basin. Sewer Collection Report - 1999. RH2 Engineering, Inc. rr +tir W.r wr .rr •rr ‘rni'l 41 NO • (ED 1111 ir► Volume - 2 East Cedar River Basin Sewer Collection Report — 1999 Prepared by: RH2 Engineering, Inc. May 1999 Includes Chapter 2 revisions dated October 1999 lilt 'VY o� Table of Contents ) CHAPTER ONE-SUMMARY 3 PROJECT OVERVIEW 3 or Project Objectives 3 Project History 3 Figure 1: Vicinity Map 4 STUDY APPROACH 5 Figure 2: Existing Collection System and Sanitary Sewage Basins Map 6 Study Boundaries 7 Assumptions/Methodologies 8 We Figure 3: Total Length of Pipe for Options A-E 9 Sewer System Option Development 10 Option A 10 Option B 11 Option C 11 Figure 4: Comparison of Peak Capacity for Major Lift Stations in Options B-E 11 Figure 5: Comparison of Area for Each Basin for Options A,B,&C versus Options D&E 12 Option D 13 Option E 13 Figure 6: Comparison of Peak Flows Assigned to Each Basin for Options A,B,&C versus Options D&E 13 �w SUMMARY 13 Figure 7: Comparison of the Total Costs for Options A-E 14 Table 1-1: Option Ratings 15 RECOMMENDATIONS 15 CHAPTER TWO-ANALYSIS AND STUDY CRITERIA 17 SYSTEM COMPONENTS 17 WASTEWATER FLOW COMPONENTS 18 air Domestic Wastes 18 Commercial/Industrial Wastes 19 Infiltration 19 Inflow 19 Peaking 20 GRAVITY SEWER DESIGN CRITERIA 20 Gravity Sewer Sizing 21 +rr Gravity Sewer Performance 21 Table 2-1: Gravity Sanitary Sewer Sizing Criteria 21 Gravity Sewer Construction 21 LIFT STATION DESIGN CRITERIA 22 Lift Station Sizing 22 Lift Station Performance 22 COST/FINANCING 22 OW Capital Costs 22 Operation and Maintenance Costs 22 ENVIRONMENTAL IMPACTS 23 CHAPTER THREE-DESCRIPTION OF OPTIONS 24 RENTON'S CURRENT SEWER SYSTEM 24 OPTION A 24 Description 24 tor Wastewater Quantity 25 Pipe Lengths/Type 25 Figure 8: Length of Each Size Sewer Pipe Used in Option A 25 .ir Lift Stations 26 Figure 9: Sanitary Sewer Option A Map 27 OPTION B 28 rr East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 1 w IM. otif Y on Table of Contents AIX Description 28 Wastewater Quantity 28 Pipe Lengths/Type 28 Figure 11: Sanitary Sewer Option B Map 29 Lift Stations 30 Figure 10: Length of Each Size Sewer Pipe Used in Option B 30 OPTION C 31 Description 31 Wastewater Quantity 31 Pipe Lengths/Type 31 "r" Figure 13: Sanitary Sewer Option C Map 32 Figure 12: Length of Each Size Sewer Pipe Used in Option C 33 Lift Stations 33 use OPTION D 34 Description 34 Wastewater Quantity 34 Figure 15: Sanitary Sewer Option D Map 35 '"o Pipe Lengths/Type 36 Figure 14: Length of Each Size Sewer Pipe Used in Option D 36 Lift Stations 36 IRV OPTION E 37 Description 37 Wastewater Quantity 38 4111111 Figure 16:Length of Each Size Sewer Pipe Used in Option E 38 Pipe Lengths/Type 38 Lift Stations 39 Figure 17: Sanitary Sewer Option E Map 40 EAST PLATEAU INTERCEPTOR 41 CHAPTER FOUR-COST COMPARISON 42 INTRODUCTION 42 irlr EXPLANATION OF COSTS FOR EACH OPTION 42 Option A 42 Figure 18: Cost Breakdown of Option A 43 Option B 43 ow Figure 19: Cost Breakdown of Option B 44 Option C 44 Figure 20: Cost Breakdown of Option C 45 Option D 45 Figure 21: Cost Breakdown of Option D 46 Option E 47 INVFigure 22: Cost Breakdown of Option E 47 COST COMPARISON FOR ALL THE OPTIONS 48 Capital Costs 48 Figure 23: Total Pipe Costs for Options A-E 48 "ol" Table 4-1: Sizing and Cost Estimates for Lift Stations for Options A-E 49 Operation and Maintenance Costs 49 Table 4-2: Estimates of Annual Power Costs for Lift Stations for Options A-E 49 wr Table 4-3: Total Staff Time and Cost Estimates for Options A-E 50 Table 4-4: Comparison of Costs and Present Value for Options A-E 50 Figure 24: Comparison of Total Costs for Options A-E 51 APPENDIX AP-1 air ABBREVIATIONS A-1 GLOSSARY OF TERMS G-1 BIBLIOGRAPHY B-1 er East Cedar River Basin Sewer Collection Report RI-I2 Engineering,Inc. 05/20/99 Page 2 +ter Chapter One IMP SUMMARY PROJECT OVERVIEW 411" The City of Renton's (City) most recently adopted Urban Growth Boundary (UGB) extends east from the city limits almost to Lake Kathleen (see Figure 2: Existing Collection System and Sanitary Sewer Basins). Accommodating projected growth in this area requires expanded sewer service, consistent with the State Growth Management Act (GMA). This report complements the 1998 Long-Range Wastewater Management Plan by evaluating alternate sewer service alignments and sizing options. Project Objectives .. This study evaluates options for providing sanitary sewer service to the growing East Renton Plateau area of the Urban Growth Projrr1 rrP, Area. The location and limits of the .;,��,rfior for.<rivrr ennirr whir, . sL '' _ - � � study area are shown on Figure 1 t+idr r-aii r�r\4�rr pe )r8 clt► ` v (Vicinity Map). The study presents • dra r' o serue=ltenton's Urban Grov,11-1 conceptual layouts of sewer -` collection systems within the study pre rrducr, crrtemirriris in 11 eAguifer Protection Area area that could flow mostly by term rdverse environmental impacts gravity to the existing King County (METRO) sewer interceptor in SR- e Minimize II-. b : t of improving the sewer system 169 or to lift station(s) at various r fibinimizr. _h afuture cost of connecting to the sewer system locations. The report also compares OW costs for each option, including s' capital, financing and operation and maintenance costs. Construction of the projects described in the report would provide sanitary sewer service to accommodate growth consistent with GMA plans and policies. Project History In 1989, the City of Renton's Planning Division notified the Renton Public Works Division that several housing developments were proposed for the East Cedar River Basin. The Public Works +r• Division asked RH2 Engineering to determine the proposed developments' impact on the sanitary sewer system. The subsequent report identified a need for additional sewer system capacity and four possible alignments for a sewer interceptor to provide the needed capacity. After receiving public comment, the City Council eliminated one alignment(designated the Ravine alignment) from further consideration. The Renton City Council adopted Resolution 2764 on July ow 17, 1989, imposing a temporary moratorium on new sewer connections in this area of the city. East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 3 ow EAST CEDAR RIVER BASIN 4SEWER COLLECTION REPORT Ifilkirentl, FIGURE 1 ,VII VICINITY MAP M vi' +� ■� 0 2000 4000 Ill II li �� SCALE IN FEET NailSI111111.10t4 YENGfNEEMPLANNE1ISCIENTISt" , �� +�■ 1 STUDY AREA BOUNDARY ii,_nLL" yEm IP � i ..: S OU gr,,� — CITY LIMITS �� "� URBAN GROWTH BOUNDARY 11 ••••••••••••% Eito. IlliiiiiiMillimulii.=pr M.".",.......=' kiiiiiilANom_dainBEETT-11,11"1„,:m_inalt,_1.,%.1.11,,II__111111 �- . STUDY AREA �rniJiI !It ' rellitil '..119-- ----- --: 10i _:i NI '1 �1111� OM 1IL.11111 ..sr 9 - aIIIuVIII II"// ' ,, ,1,:=, n 16 tilLkV 401M ni��' 0.- woe- , _, musky tri 0 I II 1 . , „-_-_ 1 gill hil I , -17-Atlit• •"11 3---m---:,,, ___1 "um , 1 07 in diNim ,.,, „I 1_6 1.--- , _ . . II. '' ,T- # — )-- A4-i1/4 4 iii 1tva! i ,Ai tIN s/ate '`�`� 0 „.______. ipiitrAl ,�I S 4Z��y wvte vNiir�na�r ! Vasil". -. .ff_admamlimarig r1iMtiiI1 .Mil Iiim I= pm 40 110-0-. fmi, v , ,-,, \ren\199-015\SSCS—F1 I OOP circ ot Chapter One R \J To • The moratorium resolution Four (rigrn 11ni:r..f orpi:Gf Afiemei:( also directed the for Pilaff,' fewer G:Farity to the E �t Fenton Plc eau Atea Planning/Building/Public Works Department to solve The Map(r_v,rood Cedar Fiver) 1terceptor the sewer capacity problems in the study area. RH2 r The Ravine (Wien-AO-Jr a series of reports • and studies over the next several years including a Pre- p' Th oufl; irir_rreplor design Report and Draft, Final and Addendum r The\ww_�1 Mrpirv,'ord inferGeplor Environmental Impact Statements addressing this objective. On March 8, 1993, the Renton City Council selected a preferred sewer interceptor alignment that combined aspects of Maplewood Heights interceptor alternatives. This interceptor has been constructed and is currently providing the capacity that was needed to serve the growth projected at the time of its design. After the City had selected and begun construction of the East Maplewood sewer interceptor goo alignment, the Renton City — • Council adopted a new Urban Growth Boundary (UGB) and rte' f. RE'rilon Fief eau r IMOLand Use Map for this area on 'r Froce r February 20, 1995. The new UGB changed and expanded the h` basin boundaries for the city's Xx future sewer service area a resulting in the need for this } Co u,lIr & - Drfrr 11s: s 1:5 -•‘"3.6P FW1IJctr report to identify options to rn^n' . F.•fiiiilrr it d -k crrcrrtuel i t ,,�.�, � arirr.. I�t�irnrr data rtr p, adequately serve the new , subbasins and basins. Figure 2, (Existing Collection System and Sanitary Sewer Basins) shows the limits of the new East - sip Cedar River basin, its relation to the existing sewer basins in Renton, and boundaries of the study area for this report. STUDY APPROACH Development of this report followed a relatively straightforward process beginning with the review of existing data, reports, and records. This existing data was used to define many of the physical constraints for the study. rrr East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 5 ■r I / / ..1 t • , op e Tr......,,,_,/ \ !filo I ._ , I j gr--. vi i _-: : - :-- . ----,,_ A .. //I * . • ..1 <..j < •,- li - , ghil , .L-%rj:. • d k. II I 0 \ SE 106t1L_ . 11 11 3 - 'NE 14th!st 1.1.`" i ,,e, ., ./ li 4• - '11q I .. SE 108th St • c .41•.., i r 7., 7, &I.../ , cip, ,,,1 ... N. t \ / 1 /4. .._..:. 14-.......... .:7 NE 12th St. ' ;1 ±,.... I .....-t,.. - - Ago k,.....-..4. - . .: 1- T I < !I r--401 1 1 p s : , . ,...1 WE.' i; • — I \ N•4/,\ \ i th 4....\, ilf44 . .`' ' • 1' 41..,,Y. ' i iy_ti-Tut PI illit z. E , . ...4.• I re, ,.,,„ .T;, las_ , ...k.k .\\I-Ass.')4-t.' i I i ,, i t ' l' "fc.,!° „•-t 12 1 al i)--S-) ! sE 113th MC I I 1 SE 114th St la< • i eq Alibb ., - ,toe ' r h : 1 l' • . Ai ..„. ,,_,.,,,....„_• •,._t,:4101 1.11 NE 'Ots LhAi 'I !11 I IT. LEW!" ., .... , 1-7—PimpaiN..th , NE To— st - ____ _ I _____.: 660 1320 • • I . •••- 4.. "" 1 \ ... 0 _tii..stawa. .41 : 1 1 .. .5'4 pi I r NE acruc ,,,__ ___r __. , _,._ ._, 1.-g''NE 13C4-•--,# ..,---A,1 , , _ , ,.....br , is,117th$t 0q] ---- _ SCALE IN FEET Ar ..irmur - .....i ....„--...,_ ' ri IF-- . . 1 , Illipp li . I j ,.....-••••, „. Allit,_---- .61;41t. •c' § II :.' l'. • E 8th ti --________ .....--- Mm. 1 r --.13 ,---......‘......,... ..--rigit! i 1 s I G. Ni-ith-s-t- 'i , 1,c,- '.. A \ 1 EXISTING SEWER I 1 .1 i \I --7------4111/4...' --' i se athio - i . ...... „..._ . , , NE 7th St _'5,""------.1,,, ,\.-7 i • , '\ 1 S tat, = NE ...**- 1,.. . l' 11.1 ''.•:1 \fa....ami 1 1 — — — , STUDY AREA BOUNDARY ENE 7IW•-• 0. 'r.g ZUE 1....'11111111 I ••••• 4.01", 0nm *mime 1 EXISTING BASIN BOUNDARY rl i lv, . \ ;, ::4•: •‘ -...v.......,,— ‘,..... :, ;------1/4),". - ; 8,NE 6th,,---, _ _ ! • 1 ' r "Ntri:juy4.4 n 4' ff.. PIS21k-4.1. 5 h St • . ..._I "... •.54, CITY LIMITS i ',..-1- • fj .. E40 , 1;A „0.._ --. ; ! „...._._...! SE 124th St -._-_, \,,____ 1 ,,,/ r...1 x 54.---.1 a:, 4/ . _,..,.. ei tri , . ammommi-= URBAN GROWTH BOUNDARY 1 '1 • 711...,--. 1........-.Luis. • 1111:/ (401 ___.....0" •••• '' .et 1 ,/ 1.__ °' #/ '4 1 .-1'.• 'I4 / t--4 ----N— - i•.-4th ' ' i NE 4Th t i•--, / •E g 8 A 1-21: )-.--. b-- . k..,N._ __ --y--• SE 128th St , --•-• . 4000 1 g / 1 I ' I Z' : .M.-/_ VI . '',;:j •0"..6t - Zi' _il +;.;NE 3*d PI I P .0" I 134th St 71 prr-H1,4 -;TF:ii--- ,„. " ., 8, 1 LJ7 '11111 - Z sE_ggitt ..--/. liai Ili 1 1 a / .14t1.1°g' lj ;3 :_: NE 2nd St li "."t il Le ' . ----ilt' .117-. •: 1 _ iiic 1.3. L 1 kX i \...z..... i XI / SE 132nd Si Z i Z ! ill" 1 SE 132nd St. i SE 1/1/ SE 11 d St 1 I i!.,.e! r•Niok, „ i*: s--• i ' i( :WAIF i s 1 5 v\ -1 eq 133nd St ,' I. i • \\I- ti ' *Ali 1....r" '"), , i I i ei al I, I ,.11 !E 136th S! b4 $ 1 bi l_iL_n 11SE 134t St. .1c 1 •, nd St .;- I non limn 11 all 1 PI% tid 3 1 111111 ,,, ,,,,. I \1 lip- ..f.1 .c I -----,--=...„---- I SE 135th t -,AK _ I"ii 2nocl at, 1 1 A i s f_______,,_ Milir7r.:, ist 1 I 4*" - -$ --44111 kik ----) ,.---,.-- -.,..-r...- Ill ...-- ,, l' 1 L. ..,-"._sc., , 1,[71 SE 13t3th St. / .- . S plAILH1 P 1 1= -----__11.__ 136th St LI111. iLiberty , • 136th St .„._ /1 ili 'C::::111111641.1111 1 II 11 / 1 1----- SE 138th Ptil _ 0,SE 138t Pt 17;;;---1 tIl A bs A 1 I 1 \ '7':,,>,, -'1%. .00' -grAllip, sE 5:^ '5; j _ •r- 8118111D SE 139th Pi 11119M 1 Sirt?th PEAgill CEZAR S 1 V < < 6 6 R g < ''4 1 I •-•,,, l ..•\ 11 A \ ''--- 'N..!'•-.••••••''''.'''..-:-----".--!.-...'''-'--.4 1 11\ii.L,-.'-.-----4 .1 I I 114 p-------..' I ? dioriovwstst 4,14 SE 1 I N. S RIVE BASIN i - ?'''. = SE : •11 . , '\--- i .-. ' '`.. / i', ':N -•eug.,..'"...., , I 11 . 1 \ tiolisommolool , ..-11a.Air...., §iii 4— 142nd St ^ ,... ... .1 ALI 1`.F. ,..--4, s\7•144%-/Ahlillb ("‘'`- .*F ..,,,,,y k .2.si 1 . , 414 let ,, 2 EL, --.. RIVER BASIN ' Ti---77144P- .. \ / • r — — SE 5h PI \,Q 144th St.li ! a, ____1 • LI__ t 1 •'- ' AY 1) t1t A 'IPIET11 ‘5,,, ../..7 ----- ---"----- 1 SI4 '4th IOW al .... ..... \„,....,.... .,,, ., , •h - 0.1.1 I • N ' 4. • ' -- . , .0,11"41\41 ...,. \ ; p.__ ' limo 7-- -••••, -- /i '•• >• ............_ 1 Th St ..r, i \ . t ._.-• N . C‘%Id SE 149th St 41k SE Lil 111114 . i ) \,. • etkit. •.,„ ,..1. ,-11,56 \\VIII,. ''''''''.•••••••••/. /1 I\19 g'* 14 7 St Rent *\\*'''"R. i% 6 # / 4,,,,vile At.,..., 1111"141. I \> ..1...,:).. ... ..........„ ttw,. 4 ,:,\,'16th Sw".•* Y0,,,s w '\ 't It -; .1', ......... • Nor SE Jones R. ___..--- SE 16th Pr • t--ft *."7.,,\R,:c." : :,..;?- \ \7, N. , 7 //, p ,Ave SE , .g I NS'N '' 4111'1& •"'",5\• 7 '11' -ck-,,% N v--- • - - '1/4, _., \REN\199-015\SSCS-F2 NII SE 18tn ' 4-1111111r iiji ilyst Re„t,_ , r? • . V C) EAST CEDAR RIVER BASIN 41616...._ I 0 , % I //:--• I RolIin• / . _ •. Ai ‘... 1. rrt j ss, > 8k.S.„.E2Ot . LI y ( 1 -.1".". =,,,i''.1"."11- . -----I -.--- ----(;---'' SEWER COLLECTION REPORT ..... , t _...4_,, 11,3 / (-11111111 r---. '',1 8''-' ..... -7-7 4, '-") .._._ LOWER CL-1*' 7 ..,-...0..--.N\ •1.''1 Ile .SE 21st St I).:-- .\\ '-71:::::) 15es'• tic. 71 RIVER '--. 1 \ I FIGURE 2 i. SE 161st St SE 160th \ 5E159th 1 \ 1 14\,..... ) 1E-7 IN I li v(..r..-.7-f_.,,--, \\•\„.../ • I./ SE 160th PI i \ im EXISTING COLLECTION SE 1; \ / SYSTEM AND SANITARY I V'-: I Cr lAvo, c, Zil I63rd St d 81 .1--41 i T FM SE I63rd St 1 1.1:?-"-\\*7%•, n ---' 4\S- ,••• •••76,45.1, ,ziS- AY 7..SE SE I62nd PI % SEWER BASINS Chapter One i� .®• vTo� ion Two critical physical constraints were the location of basin boundaries and existing "dry sewers" within subdivisions in unincorporated King County. These constraints defined the layout of the +ir' initial gravity sewer system that formed the foundation for all of the subsequent options and evaluations. Study Boundaries The study area, commonly known as the East Renton Plateau, includes the Heather Downs, Honeydew, and Highlands's neighborhoods in the northeast portions of incorporated Renton. The bulk of the study area however, encompasses property outside of current Renton city limits, but within the latest adopted UGB northeast of the City. The study boundaries lie west of 184th Avenue SE, north of the Renton-Maple Valley Highway (SR-169), east of 136th Avenue SE, and south of SE 120th Street generally (see Figure 1,Vicinity Map). The East Renton Plateau study area lies to the east of two current sewer basins: the Lake Washington East and West Cedar River Basins. The Lake Washington East boundary generally follows May Creek on the north, 148th Avenue SE on the east,NE 6th Street to the south, and Lake Washington on the west. The West Cedar River Basin is bounded by NE 6th Street on the north, 142nd Avenue SE on the east, SE Petrovitsky Road to the south, and follows a northwest line from SE 170th Street to the Cedar • River on the west. The study FaGforn f h r is Fir-r: 'bed area boundary is similar to the ._ludy Options;r current East Cedar River Basin 1.0 boundary (see Figure 2, Existing Collection System PJ Iyrtr-rE Frrtufrif and Sanitary Sewer Basins). Condrat " ror'=lr;eraaJrts - Existing land use in the E idinr "dry"rev; rs Urban Growth s J Bary planning area is a mixture of Steep southernI It ff Development iim g low and medium density residential (Urban Residential 4- Ceder River rrresing Anne alio° f Incarpration 12) with a very small x commercial area. The majority w.� p J t3' �� of the area has a King County zoning designation of residential with four units per acre (R-4). However, under King County's land use, the potential for a zoning increase to 8 units (R-8) or 12 units (R-12) per acre exists. The potential densities associated with King County's current zoning designations are comparable to those under Renton's adopted land use designations for the area. According to the City of Renton's Comprehensive Land Use Plan, adopted August 17, 1998, the land use designation for the study area is a combination of "Residential Single Family", "Residential Rural"as well as "Residential Options." Residential single family areas are described as areas that "protect and enhance the character of single family neighborhoods, improve opportunities for better public transportation, and make more efficient use of urban services and East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 7 Chapter One • Ti rr infrastructure." Common zoning designations in these areas are five and eight units per acre. Most of the study area is designated Residential Single Family. Residential rural areas are intended to "preserve open space and natural resources and protect environmentally sensitive areas by limiting residential development in critical areas..." One and five units per acre are common zoning designations within this category. The northern and southern edges of the study area are classified as Residential Rural. Residential option areas are for the creation of"new residential neighborhoods...in a `traditional neighborhood' development style while at the same time supporting affordable housing, infill development, transit service, and the efficient use of urban services and infrastructure." Eight and ten dwelling units are common in these areas, though multi-family dwelling units up to twenty- four units per acre may be allowed. A small portion of the northwest corner of the study area is designated Residential Options. Assumptions/Methodologies Both physical and regulatory considerations defined the outlines of this study. One of the most overriding physical considerations is the existence of a steep bluff running along the entire southern portion of the study area. This significant topographic feature defines the edge of the �.. plateau that dominates the study area. It also limits options for serving the area with sewers. The natural flow for sewers in the study area is from the north towards this bluff. However, it is desirable to limit the number of times sewer lines descend the bluff for both environmental and air cost reasons. Only relatively few feasible corridors exist for installing a sewer line down the bluff from the plateau to the valley. This fact, together with the location of existing "dry" or unused sewers, played an important part in shaping the sewer system layouts in this report. MB From the inception of the study, consideration of existing "dry" or unused sewers influenced the work. Dry sewers are sanitary sewers installed in a new development but not connected to either the homes or the regional sewer system. The intent of installing dry sewers is that eventually the homes in the project that are initially served by septic drainfields would be connected to the sanitary sewer system. At the outset of the study, the existence of dry sewers in the study area was mostly anecdotal. In order to confirm whether dry sewers existed in the study area, RH2 reviewed King County plat tracings, franchise records, and other information to map the location and, if possible, the size, slope, and materials of existing sanitary sewers within the East Cedar River Basin. Field studies to corroborate the location of the dry sewers were also conducted. Crossing the Cedar River to access the King County (METRO) sewer system was a final consideration in the layout of the sewer system options. The existing King County (METRO) interceptor lies south of the Cedar River. Conveying wastewater to this facility requires crossing u the river. Two existing sewer conduits exit via the East Renton Interceptor and through sewer lines located in the Maplewood Golf courses. However, if a gravity option were pursued, new crossings of the Cedar River would be required. East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 8 for OW o`�Y o� Chapter One ♦ CD illM Regulatory considerations also substantially influence the configuration of the options in this report. Based upon the UGB adopted by King County, the City adopted, as part of their 1995 No Comprehensive Plan, the area east of the City Limits and within the UGB as part of Renton's Potential Annexation Area (PAA). Per the Countywide Planning Policies, the City is responsible for providing sanitary sewer service, either directly or by contract, for their PAA. In other portions SID of the City's PAA, adjacent districts provide existing sewer service and Renton has or is negotiating with those districts for the provision of service. In the East Cedar River Basin, there is not an existing provider of sewer service. Renton has chosen to be the sewer service provider to lir this portion of their PAA and has expanded the proposed service area to include the Urban Growth Area. is Future land use patterns planned by King County and the City of Renton are similar and will result in comparable densities and wastewater flows. However, since this area represented an expansion of the service area, flow projection data and analysis contained in the East Renton Interceptor EIS its and Pre-design Report required updating. The timing of development affected the evolution of the sewer options in this report in two ways. op First, significant portions of the study area are already developed with subdivisions and related support activities. As alluded to above, some of these subdivisions already have sewer lines in the streets. Most of the Figure 3: Total Length of Pipe for Options A-E homes and subdivisions in the study area do not .r.JpO n 273,403 I 272 ft have dry sewer lines but are served by on-site ,,,. , sewage disposal 267 400 ft systems. However, the x703 ft street patterns set by this 260 900 ft existing development prescribes the options "o°°°" for extending sanitary sewer service. ss5nm a Other considerations that �.. impacted thinking I during the development of study options were ;45p0 R Opt=A OPt..B opo oho Optaosa the need to provide sewer service to school facilities and several proposed new developments in the area. The Issaquah School District has several schools in the basin that have been in need of pubic sewer service for several years. These ea include Liberty High School, Briarwood Elementary, and Maywood Middle School. In addition, the Renton School District recently rebuilt its Maplewood Heights Elementary School. This school utilizes a temporary pump station since gravity service is not available. While the need is to not as high as for the Issaquah Schools, it would benefit the Renton School District to obtain gravity service. is East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 9 (r r.r of o� Chapter One a •1111 Proposed new developments are pursuing extension of sewers. These developer extensions will bring sewers into the basin in the near future, allowing the potential for service to properties in the vicinity of these extensions. To the best ability possible, the development of the sewer system in the East Cedar River Basin should be guided by the ability to serve the greatest area possible for the least cost. However, the needs and wants of the property owners in the area will strongly influence the option(s) and phasing chosen. IMO Sewer System Option Development tip Project goals and physical and regulatory factors set the framework for the initial option to serve the study area. The initial objective was to create an all gravity option for the study area. Careful analysis of topography revealed that two small areas (one on the western edge of the study area and one along the western edge of Jones Road) could only be served with lift stations. These two small lift stations became common elements to all options. They were labeled: ' ,fn i(Ji r it o r i - ci ri(' • SE 135th Street Lift Station dirig development of_ewerinr rpfirri ~` • SE Jones Road Lift Station ,,, vow Option A became the "all gravity" -iOJ, Basins alternative for this study. While it does include the two small lift stations described above, all other wastewater would be conveyed by gravity via three main routes. Sewage is directed more f ilore Force "' Bigger Smaller out of the study area through the Gait (`Rains Sub-oasins Sub-basins r southern end of Basin Three out to Maple Valley Highway. Sewage will also flow out the southwestern corner of Basin Two, also to the Maple Valley Highway. Finally, sewage will be directed through the western side of Basin One along SE 128th Street (see Figure 9, Sanitary Sewer Option A). Relying on gravity to move sewage allows a minimum amount of lift stations and force main, reducing the cost of this option. Option A consists of about 260,000 �. feet of gravity sewer pipe and about 1,100 feet of force main pipe through four sewage basins of roughly the same size Wr Using Option A as a starting point, permutation of options began. These options were limited by the physical and regulatory consideration discussed above. Therefore, since Option A represented the "most" gravity dependent option, only options that included more force mains (and lift stations) presented themselves. Options B and C present two variations on the theme of increasing the amount of force mains to serve the study area. Option B assumes that sewage cannot be directed out the southwest corner of Basin Two. This requires that sewage be pumped up to Basin One, where a gravity system can then transport ikv East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 10 Yr MO G'SY 0 Chapter One ®• �Fvzo� ow sewage out of the study area. This increases the costs, both capital and operating, of this option as compared with Option A. The rest of the sewage is still conveyed by gravity as in Option A. This to option consists of 259,000 feet of gravity pipe and 8,300 feet of force main pipe that convey sewage through the same four basins as above (see Figure 3, Total Length of Pipe for Options A-E). In addition to the two lift stations mentioned above, a third lift station will be located at the i' end of SE 141st Street(see Figure 11, Sanitary Sewer Option B). Option C relies more heavily on the use of lift stations to convey sewage. Sewage would still be ill pumped uphill into Basin One as was proposed in Option B, but Option C would now convey sewage in Basin Three by gravity to a southerly point. Sewage would then be pumped uphill it through Basin Two, and eventually into Basin One. The additional pumping equipment further raises the costs of this Figure 4: Comparison of Peak Capacity for Major Lift Stations in Options B-E* option. 900 gm { 3.. 1' I V 1 This option consists of roughly the same amount of is 2,500 gravity pipe as Option B, t I but contains 13,400 feet of ^ 2000-V1 19W8� ; force main pipe as opposed or ' to 8,300 feet in B. (See i Figure 3, Total Length of ; i. 1.410 Bpm 1,400 BPm I Pipe for Options A-E). A al y I. I fourth lift station is also included in this option on 154th Place SE (near the SE us, - 450 gm 450 gpm 500Jones Road station). (See 2211 Bpm :210 gimp i Figure 13, Sanitary Sewer Option C) This option is • Option B Option° OP=D °P°°°E the second most expensive 'op."'A 4.....4....",..?"go... ®SE 135th Street&164th Ave OSE 141st Street ❑154th Place SE of the options due to the amount of force main pipes and lift stations used. so The fundamental difference among Options A, B, and C is the increasing amount of force main and numbers of lift stations. This represents the first permutation of service options to the study area. IVO Figure 4 (Comparison of Peak Capacity for Major Lift Stations in Options B-E) illustrates the differences in size and location of lift stations for these three options (as well as Options D and E). up Remember that all options have the two small lift stations at SE 135th Street and SE Jones Road. Options D and E would require the largest lift stations. This is due to the fact that these two options must pump more sewage uphill than in Options A, B, or C. The second array of permutation factors used in the development of options relates to the configuration of the subbasins served by sewers. Modifying the limits of the subbasins is possible err because sewers can be laid at various depths. This permits installation of relatively deep sections of al East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 11 — �.tY o Chapter One +c C� NT— so sewer pipe under undulating topography and still maintains adequate gravity flow. In the case of this study,the timing of development was also a factor in the basin configuration as well. us For Options D and E, it was assumed that the area covered by Basin Three would develop more quickly than the other basins in the study area. This led to the alteration of the size of each sewage WO basin. In this configuration, Basin Three becomes the largest basin, by adding portions of Basins Two and Four (in the previous alternatives). The size of Basin Two is reduced to minimize the necessary workload on the SE 141st Lift Station. Sewage is no longer pumped up to Basin One. 111' Sewage would now be pumped into Basin Three and then be conveyed by gravity down to the Maple Valley Highway. or As shown in Figure 5, (Comparison of Area for Each Basin for Options A, B, & C versus Options D & E) Options A, B, and C contain the same amount of area for Basins One through Four. In each of these proposed options, Basin Four is the largest proposed sewage basin. Basin Four also contains the largest area of Figure 5: Comparison of Area for Each Basin for Options A,B,&C versus Options D&E residential units and 1,15:1 Ike population total. .,,.- Therefore in Options us A, B, and C, Basin Four will have the largest dry weather imp capacities, peak dry Z. 717 weather capacities, 5 inflow and infiltration, I600 s<< „1,c. 5,4� la and average capacity. 1 6 Basin One has the a smallest dry weather 4°� ' art capacities, peak dry ' weather capacities, and 2.-/' 152 a` ` average capacity 1111 - despite the fact that a Basin Two contains the Buml Bum= Bui°3 Basal smallest area of es residential population of all the basins (see Figure 2, Existing Collection System and Sanitary Sewer Basins). "o Options D and E on the other hand, would almost double the residential area of Basin Three, while reducing the area of Basin Two by three quarters. Basin One and Basin Four remain relatively the same size (see Figure 5, Comparison of Area for Each Basin for Options A, B, & C versus .. Options D & E). Basin Three will now produce the largest dry weather capacities, peak dry weather capacities, inflow and infiltration, and average capacity (see Figure 6, Comparison of „ , Peak Flows Assigned to Each Basin for Options A,B, & C versus Options D & E). No East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 12 Ur r. ob, Chapter One • S. r Option D consists of 259,000 feet of gravity sewer pipe, but requires less force main than Options B and C, requiring 4,700 feet (see Figure 3, Total Length of Pipe for Options A-E). In +■ addition to these changes, this option has four lift stations: 1. the SE Jones Road, 2. the SE 141st Street, '" 3. the SE 135th Street station, and 4. a new lift station located at the intersection of 164th Avenue SE and SE 135th Street .le Option E contains many of the same assumptions as Option C, but with the "new" sewage basin structure. Sewage is pumped uphill by means of two large lift stations into Basin One. As with Option D, Basin Three expands by adding portions of Basins Two and Four in the previous wo alternatives. Sewage in Basin Three is conveyed by gravity to a southerly point, and then pumped into Basin One. Figure 6: Comparison of Peak Flows Assigned to Each Basin for au Options A,B,&C versus Options D&E This option consists of 2095 259,000 feet of gravity 3.°°° r pipe, but has the most 4408... force main of all the 'a zzo options requiring 14,200 NO feet of pipe (see Figure 3, zo. 1..� Total Length of Pipe for l Options A-E). The basin " 1.�� 7 6 rrrr 1�B° boundaries for this option a 1,187 ppm 1.1V g are the same as in Option h D. Five lift stations are .. 'p°°' 'w included in this option, �,�- `'" t ; the same four as in Option 5.-, D, and the fifth at the Mt owMk intersection of 164th Avenue SE and SE 135th Bum I B'®' Buo3 Street. Option E includes "' the most and largest lift stations. OSUMMARY This study used a significant amount of data analysis common to all five options. The analysis for ow wastewater flow, pipe lengths, pipe cost, unit costs, sizing and cost estimates for the lift stations, and annual power costs was the same for each option. ill The pipe lengths for Options A through E represent a key consideration of cost comparison. Options A through E contain similar amounts of gravity line, roughly 259,000 feet of various size pipes. The difference between the options regarding pipe length lies in the amount of force main ow each option requires. Option E requires the most force main pipe with 14,200 feet. Option A contains the least with 1,100 required feet(see Figure 3, Total Length of Pipe for Options A-E). ill East Cedar River Basin Sewer Collection Report RI-I2 Engineering,Inc. 05/20/99 Page 13 a r.r cti'CY ot Chapter One All of the options presented in this chapter will meet the project goals. The cost of the options range from $52,439,000 for Option A to $61,144,000 for Option E (see Figure 7, Comparison of the Total Costs for Options A-E). Planned growth in the study area mandates careful planning regarding sewers to assure adequate capacity and compliance with the City's Growth Management a. objectives. The following chapters describe each of the options in a detailed manner and describe the cost comparisons between the options in detail as well. When evaluating options, Figure 7: Comparison of the Total Costs for Options A-E factors in addition to cost must also be considered. At $62.300.000- so,.1� "" the beginning of this chapter some of those factors were ,O0/ SW M°°° outlined, including: 0 Adequate capacity to 557.5. serve the UGA /55.941,00 0 Preventing groundwater contamination "'°°°�°� 0 Minimizing 439 COO environmental impacts $ 0 Minimizing total costs 0 Minimizing connection =50 OW costs Cost — both initial capital as B Optaan C Opoon Opm°E well as ongoing maintenance — must be considered. Figure 7 (Comparison of the Total Costs for Options A-E) graphically compares total costs of each option. However, estimates of total costs may not reveal the entire picture. The ease of phasing project elements to accommodate the unpredictable timing and location of or development constitutes another important factor. If an option depends on a key component that has no flexibility as to the timing of its installation, the option may not be as desirable as one that may be more expensive. In addition, obstacles to building an option should be considered. The constructability of each option represents an assessment of the difficulty of overcoming obstacles to construction. These vo obstacles may be physical — such as descending the southern bluff or crossing the Cedar River. Obstacles may also be regulatory or political — such as restrictions on certain practices or Aft community opposition. tar East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 14 irr o' ot o� Chapter One • �F,,cod or Table 1-1, Option Ratings, illustrates the relative ranking of each of the five sewer system options for this study. While no option dominates the ratings, Option D narrowly scores higher than the .. — others. More detailed T, i ri 1-I r p i ion Feting: descriptions and analysis of the basis for these ratings are u` Conslrucfa.,Irfy"" P asing Cost contained in Chapters Three and Four. Option A • • • • • • imi RECOMMENDATIONS Option B ♦ ♦ ♦ • • to Option C ♦ • • • • * .} ' Follow-up to this study lies in two main areas: phasing Option D • •• ♦ ♦ ♦ ♦ ♦ ♦ and funding. Much of the ■r desirability and feasibility of ix, Option E ♦ ♦ • • �£ any of the options depends r' on the phasing of sewer r. '. _ improvements in the study area. The phasing of the required elements of the system is affected by many elements (most of which are unpredictable and beyond control) nevertheless,three primary arenas of effort stand out. imp The first phasing consideration is provision for a sewer interceptor on the proposed new Elliott Bridge. The most reliable and cost effective options for carrying wastewater out of the study area IMO would bring flows by gravity south down 154 Avenue and across the Cedar River. Crossing the Cedar on a bridge would be the most prudent type of crossing involving the least complicated permitting process and environmental impacts. The City has worked with both King County and ow King County Water District 90 to assure provisions for a sewer interceptor on the Elliot Bridge. The bridge design is nowI complete and contains the East Cedar River . .r t wrrr Coifsdiol i Scrjdy provision for utility casing construction for such an interceptor. It is anticipated ant Endre Infero-pfor .r that once sewer service is Phasing Bnarl-iills dr'sewer= extended to the area, this interceptor will become part Temporary ldir.fahon siting sr of Renton's sewer system in F ' accordance with State Law. frntr-nni,-I Clean�WrrtnrFund Wr Public Work::Tnisf Fund The second phasing Funding consideration is the dry Developer Eyfenrion sewer system in the plats of , oralInprvr-,gentCisrrid Briar Hills and Briarwood ," ,k Lane. The precise size, location, condition, and slope of the sewer systems will dramatically shape the selection process for providing sewer service to the study area. Therefore, it would be most 1 East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 15 I G1cYon Chapter One •0. "PoNTo� prudent to initiate a detailed survey and inventory of these facilities to determine their physical state. The final phasing consideration is the location of temporary lift stations. It is highly unlikely that a comprehensive regional and local wastewater collection system would be installed all at once within the study area. Therefore, it will most likely be necessary to site and design temporary lift stations that would serve on an interim basis until interceptors or permanent lift stations could be built. A more detailed plan for the timing, sizing, and locations for these temporary lift stations should be prepared. Funding will be one of the major obstacles to implementing the concepts outlined in this report. Therefore, it would be wise (probably after completion of the phasing studies discussed above) to develop a plan to fund the improvement needed to provide sewers to this Urban Growth Area. This plan should consider, at a minimum, sources such as Centennial Clean Water Fund, Public Works Trust Fund, Developer Extensions, and Local Improvement Districts. uso �nrr IS East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 16 trrr it Chapter Two II* ANALYSIS DESIGN AND STUDY CRITERIA This chapter describes the basic design criteria that were used to produce the five East Cedar River Basin sewer collection system options. Required wastewater system components, flow constituents, design criteria for gravity sewer systems and lift stations, cost, and environmental impacts drove the development of the options for this project. The sections below discuss how each of these criteria were used during the completion of this ana dr- Gneri!o r-rorr„od lc-lirN;: report. frr _' 7, t"n ii �� .� .rti IJj/ rarrtririrr edrruetr--_vrirrity end depth in i if it<'- SYSTEM COMPONENTS fir-Ayer pipe IN Sanitary sewers convey wastewater from its source to a me d rvr refeE lo prevent her.I'-rlpE point of treatment. Wastewater UP Mrd ovrrlirj\l✓ flows vary considerably and there is seldom any control over the volume of wastewater that must be conveyed at any particular time. For this reason, sanitary sewer system designs must accommodate both low flows and peak flows. The sanitary sewer system must transport all the constituents of the wastewater stream. In most circumstances, floating materials are carried along with the wastewater stream. However, unless UN the flows maintain minimum velocities, suspended solids have a tendency to settle out *It:tGViral car nzliti snts of the wastewater stream. This reality mandates that sanitary sewers be constructed 'f .s,Iti,r_rdrd tirfids with a minimum slope to maintain a gravity flow velocity that will continuously carry the �"' suspended solids portion of the wastewater stream. Conversely, gravity sewer systems experience major spikes or peaks in flow a4 c during different times of the day (high flows �> in the morning and evening and low flows in float-able c-rlidh liquid cons ittirrt the late night and early morning). In addition, storms exacerbate high flows in sewers because of leaks or inflow of storm water to the sanitary system. These peak flows must be accommodated without overflowing the system or causing wastewater to back-up into homes and businesses. East Cedar River Engineering,Inc.River Basin Sewer Collection Report 10/18/99 Page 17 WI c.)l �SY oChapter Two •me 11�'VT�� Gravity sewer systems convey wastewater the best. A gravity sewer system contains two main components: "collector sewers" which, as their name implies, collect the wastewater .im from the various sources; and "interceptor sewers" which are larger pipes that convey it to the point of treatment. . '' Another major sewer component, "'m l'r\rr y `Srv'/r S I:rl i i and typically the most vulnerable one, is the sewage lift station. A lift station is needed when the sanitary sewer system must d overcome topography that makes ""• it impossible or financially FOCUS unfeasible to construct a gravity _ �� rvr,recr_ Codec � sewer. Lift stations typically -- `,' i r�r9rrri Sewer- r\rr�r " have multiple pumps to provide Rrrf reliability and meet peak flow conditions. Many times lift a` stations are located underground for reasons. up WASTEWATER FLOW COMPONENTS Wastewater is composed of four major components: domestic wastes, commercial/indutrial wastes, inflow, and infiltration. Each of these components produce a given volume of wastewater flow, as ato shown in Table 2-1 (see Page 21), and is subject to a peaking factor that influences the sizing of sewer system elements. ow Domestic Wastes Domestic wastewater flows usually equal the winter water consumption of a residence. This water consumption is driven by the number of people living in a unit and therefore results in flow that may be expressed on a per capita basis. The average domestic wastewater flow used for this study L is 100 gallons per day per person(gpdpp). Household size varies between single-family and multi- family units (see Table 2-1). Therefore, domestic wastewater generated by single-family and multi-family development is different. This variation in flow rates is resolved by creating a Istandardized unit of measurement called an Equivalent Residential Unit (ERU). An ERU represents the volume of domestic wastewater generated by one typical or "average" ii, single-family household. Multiplying the average single-family household size (2.7 persons) by the per capita domestic flows (100 gdcpd) generates the value of an ERU. The product of this equation is 270 gallons per day per unit. Fewer people typically live in a multi-family unit (1.9 persons), therefore; a multi-family unit is a fraction of an ERU. Use of the ERU concept allows easy conversion of residential land uses to East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 10/18/99 Page 18 I ..r o Chapter Two jato +tr �v�o� sewage flows for study purposes. In this case, each projected multifamily unit will generate about two-thirds the domestic flow that a single-family unit would generate. In other words, the flow generated from 100 multi-family units would, on average, be the equivalent (e.g. ERU) of 66 single-family units. Commercial/Industrial Wastes 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 ear generated by employees of the industry, which is considered domestic waste and irl~ Itt,frilar F frit/r excluded from this category. Since the " n 'contains. Y o study area does not contain any proposed A . commercial/industrial development or domestic wastes sites, consideration of these flows has been excluded from the study. 1 commercial/industrial wastewater Infiltration xF ;ntlow Infiltration describes the seepage of groundwater into the sewer system through infiltration cracks, pores, breaks, and defective joints in the sewer-piping network. Additional infiltration may also result when stormwater leaks through manhole covers. The quantity of water Olt infiltrating into a 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. Infiltration can be substantially reduced by sufficiently designing a sewer system and by adequately inspecting them during construction. The average infiltration flow used in this report for sizing facilities is 700 gallons per acre per day (gpad). Inflow Inflow refers to direct flows of stormwater into sewer systems through hookups from stormwater collection facilities and illegal connections. Illegal connections are primary contributors of inflow. ` The enforcement of regulations banning such connections, along with continued efforts to identify and correct previously unauthorized connections, minimizes stormwater inflow. The average rr inflow used in this report for sizing facilities is 600 gpad. Note: Renton recognizes King County's standard limiting Inflow and Infiltration (I/I) to less than 1100 gpad. Renton considers 1100 gpad the maximum allowable I/I for our system and actively participates in programs and projects to idents and eliminate I/I in the existing system. The criteria Renton specifies for the materials and techniques used in new construction are based upon current industry standards that minimize I/I and, as such, would not exceed the King County criteria of 1100 gpad. For design purposes, Renton uses the criteria of 1300 gpad for I/I when sizing new mains and when determining the need to upsize existing mains. East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 10/18/99 Page 19 ow o`�Y o� Chapter Two - Peaking Wastewater does not flow at even rates. Flow rates vary according to the time of day and weather imp conditions. Wastewater flows rise during the morning and evening hours, which corresponds to a typical household routine of preparing for work or school, meal preparation, bathing, washing, etc. Conversely, domestic wastewater flows are lowest during the very early morning hours. Because ow of infiltration and inflow, wastewater flows also rise during rainstorms. Together these factors create flows that are highest during a heavy evening rainstorm. Sewage facilities must be designed to accommodate such peaks; otherwise overflows and backups will occur. For this report, a ow peaking factor of 2.0 times the average total flows (domestic plus commercial/industrial) is used. GRAVITY SEWER DESIGN CRITERIA sw The City of Renton prefers gravity sewers for two main reasons. First, they are more reliable. Force mains rely on mechanical and electronic systems. Any such system will periodically fail or 1 ill malfunction. Gravity sewers are not mechanical and rely solely on the laws of gravity to operate. GivrTy r,.J A J \fV1E { Def. �' eria ..„ t ., r;. .. paration I\/I eningrr_t/Il/ Sewer �roofU�lo jrPi;� Nlarlholos : From Water Rougi iri.ss Sizing IiIui rials �.� r 1 i� lairi r ffl i rirJ I\/Iu:,r carry peck rOiyvinyl I\/I�:00: rr rr E. �r.r, tlohws Chloride r er horizontal — (PVC) sp<c ink i ! i �� rrero0.01;7J 1 ' minimum 1 3-inon I t diarnerer Reinrorced Minirriurn veriical Lined JI/CI r0.11f2 MOconcrete '::i" diameter 2 neer per ,1 HDP;--- 0.01 I �econd Cernerrr-lined MMinirnurn minimum ductile iron 23" opening] i � ` WI iI vetoci1y I i > High densiy ci urnurn ;..15 depth ro I polyethylene I depth 20 iiii f diameter ratio r--,et I Second, they are less expensive. The electricity to operate lift stations and the staff to inspect and ''` maintain the stations costs money. While gravity sewers must also be inspected and maintained, 16 they almost always take less time and require less maintenance. The following criteria outline the sizing, performance and construction design criteria that a gravity sewer system must meet. tifir 1 East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 10/18/99 Page 20 I IMP Ol�Y o� Chapter Two • fiie Gravity Sewer Sizing Wastewater flows are composed of domestic wastes, commercial/industrial wastes, and infiltration and stormwater inflow. Sanitary sewer systems must be capable of conveying the ultimate peak flows from these wastewater sources. No overflows are permitted. Gravity sewers are sized to provide capacity for peak, wet-weather flows. The smallest allowable diameter for gravity lines is 8 inches. The Manning equation is used to design and analyze wastewater flow characteristics of sanitary sewers. The Manning roughness constant [n] varies depending on the pipe material. Gravity Sewer Performance All sewers must be laid on a grade to produce a mean velocity, when flowing half-full, of at least 2 feet per second (fps). The maximum allowable inflow and infiltration is 1100 gpd. The life expectancy for new sanitary sewers, using current design practices, is in excess of 50 years. Gravity Sewer Construction Table 2-1: Gravity Sanitary Sewer Sizing Criteria Allowable sewer pipe must be ductile iron, HDPE, PVC, or Average Domestic Sewage Flow 1: 100 gals/day/person concrete. For normal depth, PVC 2.7 persons/dwelling is generally preferable because it unit(single-family) Population Density has longer laying lengths, which 1.9 persons/dwelling result in fewer joints, reducing the unit(multi-family) potential for infiltration. Commercial and Industrial Sewage Manholes must be at least 48 Flows: inches in diameter and spaced at ++� Commercial 2,800 gpad4 intervals not to exceed 400 feet on Office 2,800 gpad4 sewer lines that are 15 inches in diameter or less, and 500 feet on .r Public Uses: 600 gpad4 sewer lines 18 inches in diameter or School-with Showers and Cafeteria2 16 gallons/student/day larger. The North American Vertical Datum (NAVD) 1988 is 4110„, School-w/o Showers,with Cafeteria2 10 gallons/student/day the common datum used within the Inflow and Infiltration City for design and construction of Peak Inflow/Infiltration(for sizing) 1300 gpad4 sewer facilities. The maximum Peak Inflow/Infiltration(performance)3 1100 gpad4 preferred depth of a gravity sewer line is 20 feet. Peaking Factor 2.0 "”' The Department of Ecology Depth/Diameter Ratio: .85 requires separation of water and 'Washington State Office of Financial Management,1992 sewer facilities for health reasons. Z DOE Criteria for Sewage Works Design, Therefore, sanitary and storm sewer 1998 3 King County METRO facilities must meet separation `moons per acre per day requirements. A minimum horizontal separation of 5 feet between sanitary and other facilities must be maintained. Wherever possible, a horizontal separation of 7 feet is desirable. These distances are measured edge-to-edge. IOW East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 10/18/99 Page 21 tow vow O<SY 0 Chapter Two kr• VIP LIFT STATION DESIGN CRITERIA Lift Station Sizing Lift stations must contain 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, 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 must be capable of passing spheres of at least 3 inches in diameter. Each lift station must be provided with either an on-site or portable power backup. A lift station designed for portable power backup must be provided with sufficient wet-well storage to allow adequate time for City maintenance personnel to transport, set up, and provide the necessary backup during a power outage. Wet-well storage must be designed on the basis of peak wet- weather flows. Lift Station Performance When all pumps are operating together, the force main must have a maximum velocity of 10 feet per second. Regardless of the velocity criteria, minimum size must be 3 inches in diameter. The design period for lift stations must 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 20 years for the facility and 10 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 customers to pay for the facilities. 111. COST/FINANCING Cost and financing become intertwined during the evaluation of a project. Essentially, the cost is eir what you pay and the financing is how you pay for a project. In evaluating the East Cedar River Basin Collection options, the following cost factors were considered: capital cost and operation and maintenance costs. A brief description of each category follows. A more substantive analysis is presented in Chapter 4. Capital Costs • .r Evaluation of capital costs considers total cost, life cycle cost, present value, and cost per ERU. These evaluations were performed for comparable time frames for each option. Operation and Maintenance Costs Evaluation of operation and maintenance costs should consider: • labor costs, • power costs, and • equipment costs. Via East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 10/18/99 Page 22 IMP GtiTY oChapter Two ) WO ENVIRONMENTAL IMPACTS Wastewater facility construction projects create two types of environmental impacts: direct and VW secondary. Direct impacts are caused by the actual construction of the option. For example, digging trenches requires erosion and sedimentation controls. Most projects will have fairly standard direct impacts that are mitigated by proper construction techniques. tuf The exception to this would be the potential that the City may have to provide for the installation of sewer main(s) that cross the Cedar River or other watercourses. The City has experience oar identifying and mitigating the environmental impacts associated with construction in and around the Cedar and other watercourses. Alternative methods of pipe installation, such as boring or micro tunneling may mitigate impacts involved with a watercourse crossing. Another - consideration would be the elimination of the crossing of a major watercourse (Cedar River) by utilizing a lift station. Indirect impacts result from the increased development that typically happens after sewer service has been extended to a new area. For example, there could be a long-term traffic congestion that results from increased development. For this study, indirect environmental impacts similar to "` those outlined in the East Renton Interceptor Project Final EIS; November 1992 will be used. Environmental impacts unique to this report have also been considered in the study options. This document itself will not create any direct or indirect adverse environmental impacts. As sewer on facilities expand as described in this report, projects will be reviewed according to the latest environmental review criteria. OW OW wr OOP ONO East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 10/18/99 Page 23 err �r. Chapter Three DESCRIPTION OF OPTIONS ,r, The majority of the East Cedar River Basin is located outside Renton City Limits. Currently most of this basin is without a sewer system. Sewage for the small portion of the basin that is served flows either through the new Safeway site or the 12-inch main in Duvall Avenue, both of which rrr flow into the East Renton Interceptor. Options were developed in response to the City's request to study options for providing efficient sanitary sewer service to the East Renton Plateau area (see Chapter 1). The purpose of this chapter is to describe each of the five options in detail. All of the taw options are based on the design criteria discussed in Chapter 2. A detailed description of the cost comparisons described in this chapter can be found in Chapter 4. 'g'' RENTON'S CURRENT SEWER SYSTEM The City serves an area of about 16 square miles and is divided into six main sewage basins. Ninety-four percent of Renton's population is currently served by a sanitary sewer system. Those not served by sewers (a portion of whom are currently in the East Cedar River Basin study area) ple rely on septic tank/drainfield dy of ' O systems. The City's current sewer system operates 23 sewage lift e ni O ri D.Martlsh may stations. rv�lcr Esitxry OW* '/35inr, The City's gravity sewer system relies mainly on 8-inch diameter Lake. King lower sanitary sewers. The system Wcztrrport 4. cacti vetMEAT0t INElf currently contains about 3,700 manholes. A complete breakdown 1Prof the different sewer sizes and \4(i fG elad� lace pipe materials used can be seen in ImpT� ail i��I�i '', ' washin1on Volume One, Table II-1: Summary of Sanitary Sewer JIrrii Sizes and Pipe Material. All five options will increase the size of the current system and expand the City's sewer service Si area. While all five options will increase the amount of the system's gravity sewer similarly, the number of lift stations, force mains, and pumps would vary by option. OPTION A Description Option A provides sanitary sewer service to the entire East Cedar River Basin study area by adding a total of 260,000 feet of gravity sewer line and 1,100 feet of force main to the current system. East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 24 IW .CY oti 04% Chapter Three This addition will create a 32% increase in gravity sewer for the City. This option covers an area of four proposed sewage basins. Of these, Basin 4 is the largest containing 905 acres (see Figure 5, Comparison of Area for Each Basin for Options A, B, & C versus Options D & E). All four basins combined cover an area of 2,647 acres. This option features two new lift stations, one located at the intersection of SE Jones Road and 149th Avenue SE and one on SE 135th Street. Two pumps will be located at each lift station, resulting in a total of four more pumps to the current system. Due to the small amount of force main and lift stations needed for this option, it is the least expensive of all options. The total cost for this option is $52 million. This cost includes all operating and maintenance cost estimates as well as capital costs. A detailed cost breakdown will be discussed in Chapter 4. Wastewater Quantity Option A serves a proposed area of 2,647 acres including Basin 1 containing 511 acres, Basin 2 containing 514 acres, Basin 3 containing 717 acres, and Basin 4 containing 905 acres. This area is comprised entirely of residential units and four schools. The projected average flow quantity for the study area is calculated to be 3,318,650 gallons per day. This number is based on the average domestic sewage flow being 100 gpd per person. The peak factor for this area is 2.0, so the peak quantity will be 6,637,300 gpd. Infiltration and inflow is estimated to be 2,236,720 gpd, resulting in a total peak day quantity of 8,874,020 gpd for the East Cedar River Basin study area. The sewer system proposed in Option A will meet these peak quantity requirements (see Figure 6, Comparison of Peak Flows Assigned to Each Basin for Options A, B, & C versus Options D & E). Pipe Lengths/Type The topography of Figure 8: Length of Each Size Sewer Pipe Used in the area generally Option A slopes from the L 8,000 B northeast to the 13.600 ff southwest. For this 10,100 ft reason, a gravity `r � ;,<;F " � } ' 0 a r• sewer system will be y t.�oo used to meet the peak �� 8,700 ft 6 quantity demands of ' - 1,100 ft the East Cedar River Basin study area. Two types of pipes will be used, gravity sewer and force main. Gravity sewer, as the name implies, uses 210.500 a gravity to transport sewage. Force mains are connected to lift lel 4"(force) •8" o 8"(dry) ■io" ®12" ❑15" ®15"(t1>ia) II 18"(trens)1 stations which pump sewage uphill. Option A contains gravity sewer and force mains with various East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 25 c),t Chapter Three yipr • diameters from 4 inches up to 18 inches. As seen in Figure 8 (Length of Each Size Sewer Pipe Used in Option A), 8-inch gravity sewer is the predominant diameter used in this option with 210,500 feet estimated. ow This option requires a total of 260,000 feet of gravity sewer. The smallest allowable diameter for gravity sewers is 8 inches. The sewer must maintain a minimum velocity, when wastewater flows half full, of 2 feet per second. PVC will be used for sewer lines in this option. This allows for long layinglengths with fewer pipe joints in the system, ultimately reducing infiltration. �wr For this option a total of only 1,100 feet of force main is needed. Since all of the options will need roughly the same amount of gravity sewer, the difference between the options regarding pipe lengths lie in the amount of force main needed. Option A proposed the least amount of force main. The proposed 4-inch diameter force main is also the smallest diameter of force main options. Force main must be capable of maintaining a minimum velocity of 2 feet per second. The force main must have a maximum velocity of 10 feet per second when pumps of a lift station are working together. The proposed force main will be located in two areas: (1) running in an east/west direction on SE Jones Road from the lift station, and (2)running in an east/west direction on SE 135th Street from that lift station (see Figure 9, Sanitary Sewer Option A). err The estimated pipe costs for Option A, $36,645,000, is the least of all the options. This cost estimate includes unit costs for each size pipe including side sewer, materials, manholes, err trenching, backfill,paving, and traffic control costs. Lift Stations Option A contains two proposed lift stations, the SE Jones Road station and the SE 135th Street station. Having only two lift stations is an important factor in this option due to the venerability of lift stations and high operation and maintenance costs. For example, the operation and maintenance costs for both lift stations is $80,800 per year (see Table 4-3, Total Staff Time and Cost Estimates for Options A-E). The lift station at SE Jones Road is estimated to have a peak hour quantity of 100 gpm and an average quantity of 50 gpm. The beginning elevation of the force main is 88 feet, ending at 100 feet. The length of force main required for this section is approximately 720 feet. This station contains two pumps each with a capacity of 100 gpm and is estimated to run 4,380 hours per year. The SE 135t1i Street station has a smaller capacity than the Jones Road station. It is designed to handle a peak hour quantity of 20 gpm and an average quantity of 10 gpm. This station moves sewage from a beginning elevation of 370 feet to 375 feet. The estimated force main required for this lift station is 400 feet of 4-inch PVC. Two pumps will be housed at this station, each with a r capacity of 20 gpm. This station is also expected to run 4,380 hours per year. w East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page e 26 UN 41 11.,--4 i•—•41 •--....di •,....-.41 ir......41 •........A E-. ii ....... e. _ ,,... ii-... ,..1> ) )1\I ---- .. / . 7.--- -'''..--•-•--1 '_ __ U 1. 1 I r I ; 11 --- !IliMIPrile 1! I/ • II I .... .r, 7' ItaliNA /(es ' i- 1 • '-4':1 A c... a 111 EA- -lic I * I /7 /// --____ 444‘ .1. Olen Ave •F T.3 'I I / ' *4/ --- - E 1[ 7 1 s /7 7111PH 1•1 .- ----- ' • '''/ , 1 rili '3‘ 1 1--rni . ' 06ke". \\ _ • , i , _Li , . . ll 1 __ -- t..-... - ,,,...._....._ , . .\, , 11 :•./ At , 136th : • .E remerton \ I \\ \• ,f, \' .--- .--- \,\ I / /- ‘• ---„, - __ _ 138th Ave . _ -- - -_-=-- V.•6 /A ,......._, 1-- zr— 140th Ave SE - — ----- 0 --- I -.- 0 1 illi 1111 1424_Ave-S717 ill 1' a A 142nd Ave . ....„...-) — I ,i,•• 143rd Ave SF..2,3 ---14'3rct Ave SE -- 143ril' ' gi 144th ....ve SE Ir/ri_ .z- a '-‘-=-----= 144th ,,.... ___ _Ave At ..._._ 1 I mini-, 7 i - (4, 14re Ave SE 1./2 1 .-. ir 1 If _ ID I — { -...,,,---- 17, ,H, L____ _ (.0 -±- r . ___,_ 1 .1 149th ;ve SE -'. • Plc') -_-_-- L148_,th_j i %..4. \ A.? ( c-. )m . ,... __ --. --i------ w m _ _ . 0 _ . - tC6 •-• -17 11 '4'.-..• • _:-.). _._ Li '--ti i 152nd Ave. SE ;C/3 I/31 - C/1 150th WI 144' . -....; 150th Ave SE 4. ,, , ,:-,---1 • ' 14"...,-,<-5;. , 7.1,.--.......7: \i_ c,',7 E-11-9 0 : CI 30 156th PI_SE ( (j -15-- / / ''''''''°\* I::: __ ___ _ _ != w ----1 co;th._.....,..........pve SV--_ L4-....) w_r_ 17 '.156th Ave. SE (4 m m 1,__1_575.,_ Ave SE Z.:I:I -I 03 11,5 /— ,qm 2 X• n- t. 158th 1, ,33 Cl) i 1 .cr. _ . 155th Av• S I ivri w ,--- Loll 158th Ave. SE mil _- . 36,......6••••••••_.... __. • _ • --• /V 156 th A Ve ,.^:' — -41111111111111, I.- 1 -.- li rIMMIM 0- C.0 — lin --. ---3 tx )'-'--) c —.,_-_ 160th Ave. SE 11 giac" I L _ 1 -h--- 0th Ave SE /711P,, ,.. :),./.)._i I iii z - _,..K) I 162nd SE . 1641h Nve-•;-. I__, 1 i&:-' 1.P..1•_ 1 v.i, l'- . — 162nd Ave. SE ; F I 0 C.- IL • 1 1 g-- I 164th Ave SF OM 1 i li Ln ---r "qiiir--- il 164nd Ave. St. ;-=-_,.a ,. .._._ L6C::: j 7,11 K2, 1 . _ .....4- Int ! I( MaN.P.' ,64_4' '? 1- • rn 11_1651h-P1 SE --e);? r±-' I,,.- --- •11 t 1 1. ---•- q ,--T, 0 c.r) 1 166th PI SE 1 1 • & / .___167th P1SE ...._ '(-7.--. '""•) C' 9s II 1 .1 _ __1§8th AveAg -----;----_L-,--_, - ______. r 2 i • CL 0 \O.. gnm, ,.. t. i.t: H ' ) •li I k. f C4 f • 4W • I 1 • .• lir l=111111=1111 .401 I • 1 , t \171st Ave 1 I 3 1, 171st Ave a 1, l' 1 • I . I 1 ' „. , -- _ ......-1111 "),,.,/---1 172nd Ave SE . ....,. K..„, ...... 4 / ro I cli: ; rt: CO c) C.64 1 II 11 , j....... 7.:6--.7 i'_175th Ave SE cocatim 0 .....r-‘, ._.• -n z r- it i , ---,--„, -, . ,... ••••--- ,t3 ,. _ _ 177111-Ave-SE .___ ,, 11 Aveil.E ,,--- \\> CV' ‘:. A \s,,\ ,01”- 1 ,......,,,_,... ,,,,\....,' <,),.. k. .7 \?. 1 11 pil 1 180th Ave SE ,._.. .--; ,....... .V11Ave SE ; m I OD 0 0 m > * M XI -< M XI XI 11/41 i ! c E N.e.-_, .--- - 1, 1-6. z i •,,,,,-;._, 11'410' K1 1, 0 / .. )1> CO . ,..,,..,1-• 1,,P, 183rd Ave SE / Xl 1 ( 14 I' l m I ....-\ . 11 3 - - \ i Ave II 184th Ave SE , u;) 11 T ...1 frI \ r • • . — .--- --..-__-.---i .,..----- . 3,.. ...... c) c.) .,.., a , 27- C -I 33 M XI - uaa14111)\ 0 -‹ mpg CI Da -I Z u) ,AJ — < .\,6-vo >, m m 0 rn t ,_, ___ _. -,, * z xp .,-. ''') , M DO 03 1 „/„.7, __. C. All 33 co M 3:. , , -1:1 co ta ( ) ,.. 4 ea„.., xi = \---, „-----'' b I c)1,cY 0 Chapter Three r OPTION B Description Option B will provide sanitary sewer service to the entire East Cedar River Basin study area by adding a total of 259,000 feet of gravity sewer line and 8,300 feet of force main to the current system. This addition will create a 32% increase in gravity sewer for the City. This option serves p• the same four proposed sewage basins as described in Option A. Again, Basin 4 is the largest containing 905 acres (see Figure 11, Sanitary Sewer Option B). All four basins combined cover an area of 2,647 acres. rp• This option features the same two lift stations, one located at the intersection of SE Jones Road and 149th Avenue SE and one on SE 135th Street, that were presented in Option A. Two pumps will be located at each lift station. In addition to these lift stations, a third will be added at the end of SE 141St Street. This lift station will house three pumps, thus adding a total of seven pumps to the current system. Nip Wastewater Quantity Option B serves a proposed area of 2,647 acres with Basin 1 containing 511 acres, Basin 2 containing 514 acres, Basin 3 containing 717 acres, and Basin 4 containing 905 acres. This area is comprised entirely of residential units and four schools. The projected average quantity for the study area is calculated to be 3,318,650 gallons per day. This number is based on the average domestic sewage flow of 100 gpd per person. The peak factor for this area is 2.0 so the peak quantity will be 6,637,300 gpd. Infiltration and inflow is estimated to be 2,236,720 gpd, resulting in a total peak day quantity of 8,874,020 gpd for the study area. The sewer system proposed in Option B will meet these peak quantity requirements (see Figure 6, Comparison of Peak Flows Assigned to Each Basin for Options A,B, & C versus Options D & E). Pipe Lengths/Type The topography of the area generally slopes from the northeast to the southwest. For this reason, a gravity sewer system will be used to meet the peak quantity demands of the East Cedar River Basin study area. Two types of pipes will be used, gravity sewer and force main. Gravity sewer, as the name implies, uses gravity to transport sewage. Force mains are connected to lift stations �. which pump sewage uphill. Option B contains sewer and force mains with various diameters from 4-inch to 24-inch pipes. As seen in Figure 10 (Length of Each Size Sewer Pipe Used in Option B), 8-inch gravity sewer is the predominant diameter used in this option with an estimated 208,800 feet. A total of 259,000 feet of gravity sewer will be required for this option. The smallest allowable diameter for gravity sewers is 8 inches. The sewer must maintain a minimum velocity, when flowing half full, of 2 feet per second. PVC will be used for sewer lines in this option, which allows for long laying lengths, which helps reduce joints in the system, ultimately reducing infiltration. ppm East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 28 V `–.-1 C a[ !;0th St ''l I�I LEJLI _____ L.... �� SE 117th St � ler .. L; A - i �� 111 g N • • S�1 �_ 1 I �, I L o 660 1320 Sao id 10 i • SCALE IN FEET �� j j i ISE 124th St -.)-11 \ r , i■ ( BASIN ONE , 1111 • S— .: EXISTING SEWER I1 " I5,1 -- PROPOSED SEWER ilall 1 a o � - ^� BASIN BOUNDARY 1 _ _ �_ i •i — -• CITY LIMITS i' _fi 4,n St o SE 12fl St ! • "0"0".00 URBAN GROWTH BOUNDARY ti ( 11 VE 3rd PI wij°� _� 1 w I --— ti "II „-- —_��' II .I ¢ a SE 130th St.r • �°LSt ,' I, SE�131st St.k` I} v' j_j - G i_ SE, '32nd S 1 - - 0� i I 1 i �r SE 132nd St. 1 'I II a ; I'll /o� J '� SE 132nd St�' • r i '� J iti ISE 13 ndii_ t I .- • a_ �� I�r• ^j vji1 � s v� }i �! 1tt' `"' _. ? 2 5 132nd StDa c_ >� — v"��i II umumwum00Di�Rr t . .- _, r� - � �SE133rdt c SE134th St. iJj i ! -'moi h �� , naeir �Q ¢ — ;_SE 134thSf2' lailit—'imgm--, i a aoaa�* (( v i SE33rdP'1C1-2.1 ' SE-2nd Pi c IIitalj St. a�``�`"'a�lin"`tlilm .a�c �'� `t ,`-- — SE 11361,St SE / �� taP� _,, -� Ni - -- 136th SL ��""_ �1 - �� 85 a � �_� St SE h- BASIN rwoIMI _ _. I,SE S� a I SE h " --.. Z\�: I _ .....____r_ S 136th St `, Lber ! _ lvE 4\h P�>� lS '38t� PI, a' ``� t!•OMICH in I. -:- ls�� I j ysSE 138th P LLare •aaa J / 1�_�' SE 139,h -�" �� o Lc, N • '. y; a , ` x ill - ) t __ _______J ,L_ \S�39t^ I. SE 139th Pi. 'I.511 $ a 1 1 I a ,� � { BASIN FOUR �� SF 141st S� II` !L_ SE 14�F v c - �# •A ^ I !' //Nil _ ;i SE 140th St , 11; - BASINLT,....., . SE 142nd St W / If li { ; C _ �`. It ��_ _ __ y �'� 'i_� 142nd st. THREE 11 (�`v / 1....... .:" --N , " ¢�� a'ArJ �r �� -. �� 4L�dP\. II ` I I 142^dSi ji °D I gi'1 > aIAIF 11 i� r ��— 1\�� `I JL •.;.)1 [:_� 1 LES 43rd PIir �` S� E 143r`d�LSt i z j� I - i� � � S h PI. i. 144th St.I �_ �� i� �� \ -, m� .. t I —\� -�5�,45 cam! e\ ""�`r +- -�._.. i I SE 144th J� /{ ,o„..", '6" fi 1��IIJ _ gyp• ' l, ,01 n w 7 �v ��` / / .. •i -,,,,. t 1'; N.\;\V ••, / :,:%;__,E2____,____,___._' , r;3.4. , \ji t\ 4 `C \SE 146th P • • P//,,i,:i #,SF , 4 • -� -.� �_�./- -----` E 148th St ` S 47_h,Lt `� 4,.,,,,...--. NI •4 .h ,_,„,-- i • Al SF � � _SE 149th St 11 /1 • _�� • SE ��, es Rd • 49tJLSt��i��, r�+�" ) .;.4"----"" irS Renton _ *PieI i �� `7 ' ' it , I `,•� �lLf��r ��9nes P„ Vm+V9n-ms\SScs-Fe \ 4 / nolle H c Nimiemr ,wE. SE Jones Rd /1/ EAST CEDAR RIVER BASIN �— Ave sE / SEWER COLLECTION REPORT 1 ^ N ft S£Renton ' nes Rd � '� SF M�p oe , ) 1 FIGURE 11 ____ —� „�,,,,,,, SANITARY SEWER '-- _1`---,,-----\q- / 11 � ; — _�, OPTION B Ice'CY o� Chapter Three L $50, For this option a total of 8,300 feet of force main is needed. Since all of the options will need I roughly the same amount of gravity sewer, the difference between the options regarding pipe lengths lie in the amount of force main needed. Option B falls in the middle of the options in terms of proposed force main lengths. Force main must be capable of maintaining a minimum I velocity of 2 feet per second as well. The force main must have a maximum velocity of 10 feet per second when pumps of a lift station are working together. The proposed force main will be located in three locations: (1) running in an east/west direction on SE Jones Road from the lift Istation, (2) running in an east/west direction on SE 135th Street from the lift station, and (3) running generally east/west on SE 141st Street (see Figure 11,Sanitary Sewer Option B). IFigure 10: Length of Each Size Sewer Pipe Used in The estimated pipe Option B costs for Option B, Zoo$ 8.000& $37,153,000, is in the k 4 '.-4-,-- 13,200-..„ e middle of option costs. s.4' a This cost estimate -y M �... 4.fQ includes unit costs for ,� ,-,„4,}i�. i 1 s ow& I . 1: tam 1 111, each size pipe 9.600& `% `��v�Y,.-.;�.. � � �.. �'� 1.3008 including side sewer, . 1.1 00& I ,;, materials, manholes, rs trenching, backfill, paving, and traffic P , , , � - control costs. .4> Lift Stations LOption B contains 208.300& three proposed lift stations, the SE Jones ' L _____. 0 4"(force) ■8" 0 8"(force) ❑8"(dry) ■10" 012" ❑15" 01s"(trans) 018" ■18"(trans) ❑241_ Road station, the SE 135th Street station, and a new one on SE 141st Street. Having three lift stations increases the venerability of the system i and increases the operation and maintenance costs. For example, the operation and maintenance '" costs for all three lift stations will be $84,900 per year (see Table 4-3, Total Staff Time and Cost Estimates for Options A-E). The lift station at SE Jones Road is estimated to have a peak hour Lquantity of 100 gpm and an average quantity of 50 gpm. The beginning elevation of the force main is 88 feet and ends at 100 feet. The length of force main required for this section is approximately 720 feet. This station contains two pumps each with a capacity of 100 gpm and is ILestimated to run 4,380 hours per year. The SE 135th Street station has a smaller capacity than the Jones Road station, designed to handle a san peak hour quantity of 20 gpm and an average quantity of 10 gpm. This station moves sewage from a beginning elevation of 370 feet to 375 feet. The force main required for this lift station is an estimated 400 feet of 4-inch PVC. Two pumps will be housed at this station, each with a capacity ,,, of 20 gpm. This station is expected to run 4,380 hours per year. P East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. ar 05/20/99 Page 30 r ell ��Y o Chapter Three ,eivToO' The SE 141st Street station has a significantly larger peak and average quantities than the other two lift stations because it will serve a larger area. The peak quantity for this station is estimated to be 1,400 gpm, and the average quantity will be 500 gpm. Due to the high peak quantity estimates, a third pump has been added to this station. All three pumps must accommodate this peak quantity estimate individually. These pumps will move sewage from an elevation of 310 feet to 395 feet. The estimated length of the force main required for this station is err 7,150 feet. OPTION C Description ,,, Option C will provide sanitary sewer service to the entire East Cedar River Basin study area by adding a total of 259,000 feet of gravity sewer line and 13,400 feet of force main to the current system. This addition will create a 32% increase in gravity sewer for the City. This option serves the same four proposed sewage basins as described above with Basin 4 as the largest, containing 905 acres (see Figure 13, Sanitary Sewer Option C). All four basins combined cover an area of 2,647 acres. This option features the same three lift stations described in Option B, one located at the intersection of SE Jones Road and 149th Avenue SE, the second at SE 135th Street, a third at the end of SE 141st Street, and a new station added at 154th Place SE. This lift station will house three pumps, thus adding a total of 10 pumps to the current system. Wastewater Quantity Option C serves the same proposed area of 2,647 acres including Basin 1 containing 511 acres, Basin 2 containing 514 acres, Basin 3 containing 717 acres, and Basin 4 containing 905 acres. ire This area is comprised entirely of residential units and four schools. The projected average quantity for the study area is calculated to be 3,318,650 gallons per day. This number is based on the average domestic sewage quantity being 100 gpd per person. The peak factor for this area is UN 2.0 so the peak quantity will be 6,637,300 gpd. Infiltration and inflow is estimated to be 2,236,720 gpd, resulting in a total peak day quantity of 8,874,020 gpd for the East Renton Plateau area. The sewer system proposed in Option C meets these peak quantity requirements (see Figure 6, Comparison of Peak Flows Assigned to Each Basin for Options A, B, & C versus Options D & E). lie Pipe Lengths/Type The topography of the area generally slopes from the northeast to the southwest. For this reason, a as gravity sewer system will be used to meet the peak quantity demands of the East Cedar River Basin study area. Two types of pipes will be used, gravity sewer and force main. Gravity sewer, as the name implies, uses gravity to transport sewage. Force mains are connected to lift stations which pump sewage uphill. Option C contains sewer and force mains with various diameters from 4-inch to 24-inch pipes. As seen in Figure 12 (Length of Each Size Sewer Pipe Used in Option C), 8-inch gravity sewer is the predominant diameter used in this option with 211,600 feet estimated. East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 31 �! 3G ibth 5t �� J1�� 1� St ^ N. / 1 17th S -- le, + ,----..,, _,__Ii -----R f� W N v - -lakIa j T I .: all ��'' �. - '" J 0 660 1320 2640 1Ij' i i SCALE IN FEET?" I I W j �12atn St SE 124th S A. EXISTING SEWER BASIN ONE' `i�, Q; I ��I ' I PROPOSED SEWER t �i ct- Lel a � BASIN BOUNDARY �� _ —__►� _ — �� r/• — — CITY LIMITS a n St , , — sr 12e, s; esismssiso . �» URBAN GROWTH BOUNDARY I NE 3rd PI W I I��I I, ___, I i \ I IIf 0 j 130th Stir \il • St j �! SE r I{ l� �'� NI ^ _ SE 132nd S •, I �I SE 132nd St. ' I! 7 1 a' �o� 414--- T7�1 SE 132nd Si�) i =I -IP I �^I t-T , ^ SE 133rd SCHOOL 2 aE 132nd Stl t St [:13 • 4th�f ISE 133rd Pi\\V il-1 �I r. at��rrw ; I� tul � 1---- .-__?' ca:-` �--�"Ia'I t , E 2nd I r CO ' aOSt_Si - !�r-- - __— !_-1 SE 136 St---- SSE 136th St. ^ 111111111111111 �—yf 's \ -- _ !_ 1.1 i Y "'-r St ' / i.,..L.1....,, II' < P t r „ - 1 E i1 1 \� SE 135t. _ SF .d \S \ \\ .11' I BASIN TWO , I 1 .T37411 — Ih SE 136th II '�\�l 1I� / isE PI �- ^ !�S 136.h St __ ��nth \ ,, ! I 14_1 - �=-y-a.� �.�_ l l> c, �\ //�5/ P\ / ! I N 1 • Liber I 1�_ r r---c= 15�� /" ( SE 138th Pi. 1, L ane-a LWHOM ENIN HMI i =�i r \ v'J — U _ 138th PL �' SE 139th PI ``� �' c M • >l 'k l I. �_ _„ . ..E....139th PI.' • a a. SE 139th P!. a BASIN FOUR ' \ ./) E 14151 s:._...,__77 II- �L SE 1497--Pi. : v �� -1_ M (J `E .., N ^ BASIN N (`Tl(_ ii1 SE 140th St75 'I SE 142nd .i " I I 1 .0 — ' H �'~� L'_ CJI �'l 11 142nd St. THREE L, r `� ¢ z -� ^,7177 R2hd _ - 142nd St 1 - °��° i r' > /\ �� c\ a i �., SE 143rdt S� t• h � 1. v ' Ili I � 43rd PI, ``r� �r--------")- 1 �� L' t I - I.- 4 NQS \1j�I 144th SLI + �� ^o 1�� sE--14§tn PI. ii _ ! _, _ � QUI �_ r "-1 l �``'' �� I_ SE t44thh�t ;tJ�� II \ )�'t q5 ,,( n I , 7E 145th St I 1� cv �'"1 �\ CEDAR RIV • C1 \ -�• v� `r, V• 1 Mie j � �� 1> - - \e' L.-, m ¢ \ $ �. A`i 0 \'\\�% / 1 L St" 146th P 1.- M• w.rn000 MooieN �' N. 1 S 14.t. X hyo • E 148th St S h . I j )'YJ. kg • �!,‘ 4 f '4,:i( v S' l �� I w `� .....00"1- f/ Jo ma nolle HJ 4 � `� �\nes Rr \ao+\ie9-ms\sscs-n �� , ;Jones Rd EAST CEDAR RIVER BASIN \ / • A � SEWER COLLECTION REPORT 74 1. 11..\,.._,‘,; �fh ��. -- Sf Renton nes RdFIGURE 13 oySeii �0P ° /ir-r - - -� ! -� �i SANITARY SEWER • ..... OPTION C I o� o,t Chapter Three r This option requires a total of 259,000 feet of gravity sewer. The smallest allowable diameter for gravity sewers is 8 inches. The sewer must maintain a minimum velocity of 2 feet per second we when flowing half full. PVC will be used for sewer lines in this option, which allows for long laying lengths,which helps reduce joints in the system,ultimately reducing infiltration. um This option needs a total of 13,400 feet of force main. Option C contains the second largest amount of proposed force main length of all the options. Force main must be capable of maintaining a minimum velocity of 2 feet per second as well. The force main must have a maximum velocity of 10 feet per second when pumps of a lift station are working together. The proposed force main will be located in four locations: 1. running in an east/west direction on SE Jones Road from the lift station, 2. running in an east/west direction on SE 135th Street from the lift station, 3. running generally east/west on SE 141st Street, and 4. running generally to the northwest on 154th Place SE (See Figure 13, Sanitary Sewer Option C). The estimated pipe costs for Figure 12: Length of Each Size Sewer Pipe Used in Option C, $37,481,000, is Option C among the highest of the 3.300 ft 8 000 r• n aoo options. This cost estimate 9.200fl includes unit costs for each 9.0008 m �z size pipe including side 4'30e sewer, materials, manholes, '36, 8 e 6,000 e 3300 8 trenching, backfill, paving, ''meg and traffic control costs. Lift Stations Option C contains four 4 proposed lift stations, the SE Jones Road station, the SE 211,6008 135th Street station, the SE 140 Street station, and a _LI3 4"(force)■r®r(force)°r(dry)■10.012"012"(force)o 15"®us"(Iron)o Ir■18"(trams)024"l Si new station located on 154th Place SE. Having four lift stations increases the venerability of the system and increases the operation and maintenance costs. For example, the operation and maintenance costs for the four lift stations in this option will be $89,200 per year (see Table 4-3, Total Staff Time and Cost Estimates for Options A-E). The lift station at SE Jones Road is estimated to have a peak hour quantity of 100 gpm and an average quantity of 50 gpm. The beginning elevation of the force main is 88 feet and ends at 100 feet. The length of force main required for this section is approximately 720 feet. This station contains two pumps each with a capacity of 100 gpm. This station is estimated to run 4,380 hours per year. Collection Report RI-12 Engineering,Inc East Cedar River Basin SewerPo Page 33 05/20/99 r o` 0 Chapter Three The SE 135th Street station has a smaller capacity than the Jones Road station. It is designed to handle a peak hour quantity of 20 gpm and an average quantity of 10 gpm. This station moves sewage from a beginning elevation of 370 feet to 375 feet. The force main required for this lift station is an estimated 400 feet of 4-inch PVC. Two pumps will be housed at this station, each with a capacity of 20 gpm. This station is expected to run 4,380 hours per year. The SE 141St Street station has significantly larger peak and average quantities than the other two lift stations because it will serve a larger area. The peak quantity for this station is estimated to be MB 1,400 gpm, and the average quantity will be 500 gpm. Due to the high peak quantity estimates, a third pump has been added to this station. All three pumps must accommodate this peak quantity estimate individually. These pumps will move sewage from an elevation of 310 feet to 395 feet. The estimated length of the force main required for this station is 7,150 feet. The 154th Place Lift Station has the largest peak and average quantities of the four lift stations ,,• described in this option. The peak quantity for this station is 1,900 gpm, and the average quantity is 600 gpm. This station will house three pumps to accommodate the large peak quantities pumping sewage from a beginning elevation of 193 feet to 395 feet. The estimated length of the .. force main required to do this is 9,030 feet. OPTION D Description .. Option D provides sanitary sewer service to the entire East Cedar River Basin study area by adding a total of 259,000 feet of gravity sewer line and 4,700 feet of force main to the current system. This addition will create a 32% increase in gravity sewer for the City. This option serves the same four proposed sewage basins as described above. However, a new configuration of these basins is introduced in this option. Basin 4 is no longer the largest basin. In this option, Basin 3 is made the dominant sewage basin, and Basin 2 is significantly reduced (see Figure 15, Sanitary Sewer um Option D). All four basins combined still cover an area of 2,647 acres. This option features the same three lift stations described in Option B, one located at the intersection of SE Jones Road and 149th Avenue SE, one on SE 135th Street, and a third at the end of SE 141St Street. A new lift station is introduced also on SE 135th Street in the northeast corner of the study area. This lift station will house two pumps because of its small service area. A total i• of 8 pumps will be added to the current system in this option. Wastewater Quantity Option D serves the same amount of proposed area as the other options, but with a different alignment: Basin 1 containing 511 acres; Basin 2 containing only 152 acres; Basin 3 containing an .. expanded 1,158 acres; and Basin 4 containing 826 acres. This area is comprised entirely of residential units and four schools. The projected average quantity will remain the same as in Options A-C. The average quantity is based on the domestic sewage flow average being 100 gpd ,mp per person. The peak factor for this area is still 2.0, and the peak quantity will remain 6,637,300 gpd. Infiltration and inflow is estimated to be 2,236,720 gpd, resulting in a total East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 34 ._. 4 II 1 �� i otn St LI�� J_ —_ SE 117th St \�% �� 1C — f_11_-1 MI t ,v ailia w a �r`~ MI Li �� -'t 0-4 0 660 1320 2640 � � flif I _ �' SCALE IN FEET �� SE 124th St S 24f S� ! � i� BASIN ONE N Q, EXISTING. SEWER 1 ' '' I ( !,11P1 PROPOSED SEWER r II s Q BASIN BOUNDARY I _! E` no — — CITY LIMITS 4 h St i ' — SE_'_26 St URBAN GROWTH BOUNDARY ,----H 'NP 3rd PIS E I MI I o,� I I11 A 1 SE 130th St.w. \ St It r I w \ i N I SE 131st St.I ' N .�! !_ SE 132nd S } — r I _._ , SE 132nd St. ....---....1 I ¢ ¢ �ofq f �'jr41111" w �, 1.1 SE 132ndIl t =� 1. J 33nd St. .- ___ �� i'-' .* o 1 ¢I i11 �� < Al W°N' 4, N' r- mis000 _. _ ? 2 . SE 132nd S. ^� 1 r c� > N N II • clammy ISE �33�d S w r---" -- \ �SE 133rd F SCHOOL t +----r-- , \ I : µ �/j fi �� r a IISE 134th I St. a i 1 (--�`�' ('=`; =� \ ^"7 I �,� . u a ( — �G _S€ 134th-t I i SE 133rd PI l r n [SE 135th St. i <c s=f��L MI �. < ¢ t S+ t 3 SE 2nd Pi �i V O _-- • �_ _ __ ' SE 136,St I ilk _, ---`0-4 "� —` --- SSE 136th St ' s/� S..t�\' `y, LO4I _ 4i, SE 136th St c r:cII�__ i S�� \� aSE 1 7 h I Ni 1 = � iUi1 ..136th St BASIN THREE 42 —_ hih i>� SE 13 Liberte ' I •1 —� LT SE�- �* j-_ 8th P!. 38th Pl. a Lane oo"i°� cN NI `�` N,,,.,„ s / \ I _____,__s_____-: ��-�' SE 139th PI ; • a < { , M , • �� — — SE 1 9t• PI. a. SE 139th Pi.oLi 5 _rd ?' BASIN FOUR r Si I ,_ 11 -c -0 COC_BAST O 5-�4ti5 �,— iI J 7SE 140th PI. - i� tl )/'JI �I w 1_ _:; — i I SE 140th St 1.0' L r�� SE 142nd St `:1I 'I. a al < / tv' a, - _AN_ II J 142nd St. Ilj;k _ �v t < i t• t .. l -.-.17-4------, -- 1„,,„0\. i _ v�`'i I 142nd St co > \ ��.i c'. c ' N v!1 1 SE 143rd St. '�) — •c------r 4 � �� 1L 1 _� ! S� 43rd PI �ii f��—� {� 1t �s i \ S 145th PI. `►,� 144th St. _--�+— !� 28/t. I , ! / CO°° \ ` \` — \�`-JIS�r \—___+ + — I —°- Is_ _11_ SE 144th t i ��`�1 CEDAR Rlv, d �� C�� `\\ � `"\�I , S. A S��\1\, i l /� ='c �' .!,S 6th P "" uo°u �� tJ: ` r �, (i(11/1s �SF/a , ',.,,L-,-..,, r�� E 1�h St /J S �th ,t • < E''i.,--- ��/h\„„ _ ` -,7'., \i� , / SE .'-), � • ,� SE 149th St ` I ./ A ¢ SE PRd , • 4gtJLStP` =fir— ..�� Renton , i` a11 . es 7 � � ,. .� SE NI- Maple \j N I — \/1�� /`° es a,., Vmr\199-ms\sscs-re tte Hw -c ♦�1 _I' �--- Ave SE SE Jones Rd ! j EAST CEDAR RIVER BASIN I / N SEWER COLLECTION REPORT ',rot, Sf Renton .-- nes Rd .� oySFM�p ae °� FIGURE 15 I f �� _ —� 1 O� �� SANITARY SEWER ��—\C' OPTION D ti'VY o Chapter Three �FVTo� INSERT FIGURE 15, SANITARY SEWER OPTION D 1 ' East Cedar River Basin Sewer Collection Report RI-12 Engineering,Inc. 05/20/99 Page 35 L 6 o`�Y o-t Chapter Three peak day quantity of 8,874,020 gpd for the study area. The sewer system proposed in Option D meets these peak quantity requirements (see Figure 6, Comparison of Peak Flows IAssigned to Each Basin for Options A,B, & C versus Options D & E). Pipe Lengths/Type liThe topography of the area generally slopes from the northeast to the southwest. For this reason, a gravity sewer system will be used to meet the peak quantity demands of the East Cedar River I Basin study area. Option D contains sewer and force mains with various diameters from 4-inch to 18-inch pipes. As seen in Figure 14 (Length of Each Size Sewer Pipe Used in Option D), 8- inch gravity sewer is the predominant diameter used in this option with 210,500 feet estimated. A I total of 259,000 feet of gravity sewer will be required for this option. The smallest allowable diameter for gravity sewers is eight inches. PVC will be used for sewer lines in this option allowing for long-laying lengths, which helps reduce joints in the system, ultimately reducing Iinfiltration. Figure 14: Length of Each Size Sewer Pipe Used in For this option, a total of I Option D only 4,700 feet of force 8,0001E main is needed. Option D 14,600k contains the second I - 6.400 8; smallest amount of F4o.000 a Z � proposed force main length ,�� '�'�' ;°a00 B of all the options. The « ° ` " J..: 1 goon proposed force main is I . ..._.<'�"......-- 2.600 @. located in four locations: (1) running in an east/west I direction on SE Jones Road from the lift station, (2) running in an east/west Idirection on SE 135th Street 210.500& in the west side of the study I Loarea, (3) running generally a^(force) II �> ��■s^ ❑r(dry)IIto^ tr ❑ts• ®ts^(Iran)❑ts^■ts^(trans east/west on SE 141st Street, and (4) running west on SE 135th Street in the northeast corner of the study area (see Figure 15, Sanitary Sewer Option D). I The estimated pipe costs for Option D are the second lowest between the options, due to the small amount of force main needed. The estimated pipe costs are $36,782,000. This cost estimate includes unit costs for each size pipe including side sewer, materials, manholes, trenching, I backfill,paving, and traffic control costs. Lift Stations IOption D contains four proposed lift stations, the SE Jones Road station, the SE 135th Street station, the SE 141st Street station, and a new station located on SE 135th Street in the northeast corner of the study area as well. Having four lift stations maintains the same level of venerability IEast Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 36 aim Gl.CY o� Chapter Three i of the system as compared to Option C. The operating and maintenance costs will remain similar to Option C. For example, the operation and maintenance costs for the four lift stations in this option will be $88,700 per year (see Table 4-3, Total Staff Time and Cost Estimates for Options A-E). The lift station at SE Jones Road is estimated to have a peak hour quantity of 100 gpm and an average quantity of 50 gpm. The beginning elevation of the force main is 88 feet and ends at 100 feet. The length of force main required for this section is approximately 720 feet. This station contains two pumps each with a capacity of 100 gpm and is estimated to run 4,380 hours per year. The SE 135th Street station has a smaller capacity than the Jones Road station. It is designed to �,. handle a peak hour quantity of 20 gpm and will have an average quantity of 10 gpm. This station moves sewage from a beginning elevation of 370 feet to 375 feet. The force main required for this lift station is an estimated 400 feet of 4-inch PVC. Two pumps will be housed at this station, each with a capacity of 20 gpm. This station is expected to run 4,380 hours per year. The SE 141st Street station has a significantly larger peak and average quantities than the other two • lift stations because it will serve a larger area. The peak quantity for this station is estimated to be 450 gpm, and the average quantity is 100 gpm. Though the peak quantity estimates are higher for this lift station, two pumps will be adequate for this lift station. Both pumps must accommodate this increased peak quantity estimate individually. These pumps move sewage from an elevation of 310 feet to 395 feet. An estimated 2,759 feet of 6-inch force main will be required for this station. rr The second lift station located on SE 135th Street has similar peak and average quantity rates as the SE 141St Street Lift Station. This lift station has an approximate peak quantity rate of 220 gpm, us and an average quantity rate of 110 gpm. This station contains two pumps, as it is below the recommended peak rate quantity required for three or more pumps (Criteria for Sewage Works Design, DOE, Section 3.12). The pumps at this station move sewage from a beginning elevation of 434 feet to an elevation of 475 feet. The estimated length of force main required for this lift station is 815 feet. This station is expected to run 4,380 hours per year. 01. OPTION E Description The final option, Option E, provides sanitary sewer service to the entire East Cedar River Basin study area by adding a total of 259,000 feet of gravity sewer line and 14,200 feet of force main to VIP the current system. This addition will create a 32% increase in gravity sewer for the City. Option E serves the same four proposed sewage basins as described above in Option D. This option uses the same layout of basins as in Option D. In Option E, Basin 3 remains the dominant sewage basin, and Basin 2 is still a reduced size (see Figure 17, Sanitary Sewer Option E). All four basins combined still cover an area of 2,647 acres. Option E features the same four lift stations described in Option D, (1) at SE Jones Road and 149th Avenue SE, (2) on SE 135th Street, (3) at the end of SE 140 Street, (4) on SE 135th Street, but in es East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 37 um OW GTY o� Chapter Three ®• 'P..NT— ue the northeast corner of the study area, and (5) the reintroduction of the same lift station on 154th Place SE. This option represents the largest of all the options, featuring five lift stations, kand 11 pumps. Wastewater Quantity Option E serves the same basin configuration as in Option D including Basin 1 containing 511 acres, Basin 2 containing only 152 acres, Basin 3 containing 1,158 acres, and Basin 4 containing 826 acres. This area is i i„ comprised entirely of Figure 16: Length of Each Size Sewer Pipe Used in residential units and four Option E schools. The projected 8,0008 16,000 8 r average quantity remains .1•.0 g the same as in Options Ate . `' `�, At e i , 0.x,4_,. 7 40 a Ethrough D. The average „! Ti o 2•2��e quantity is based on the �,� 'I= ,��""� ,.,008 �• �•- I _ r„im' 3.300 8 domestic sewage quantity : 1,9008 ^^-"""".� '"'n 3,300 8 average being 100 gpd per ...wk.,- -,4,4o..4 ' } A person. The peak factors a for this area is 2.0, and the � .. peak quantity will remain "' 6,637,300 gpd. Infiltration and inflow is I estimated to be 2,236,720 208,500 8 gpd, resulting in a total peak day quantity of �o IM� �� 6^( �)MIs"❑s"(dry)III tz"©ir(force)❑is ®is"(ate.)o to II (trios)❑2at L 8,874,020 gpd for the East Cedar River Basin study area. The sewer system proposed in Option E will meet these peak I quantity requirements (see Figure 6, Comparison of Peak Flows Assigned to Each Basin for Options A, B, & C versus Options D & E). Pipe Lengths/Type Option E contains sewer and force mains with various diameters from 4-inch to 24-inch pipes. As seen in Figure 16 (Length of Each Size Sewer Pipe Used in Option E), 8-inch gravity sewer is Lthe predominant diameter used in this option with 208,500 feet estimated. A total of 259,000 feet of gravity sewer will be required for this option. The smallest allowable I diameter for gravity sewers is 8 inches. The sewer must maintain a minimum velocity when flowing half-full of 2 feet per second. PVC will be used for sewer lines in this option allowing for long-laying lengths, which helps reduce joints in the system,ultimately reducing infiltration. For this option a total of 14,200 feet of force main is needed. Option E contains the largest amount of proposed force main length of all the options. The proposed force main will be located in five Ilocations: (1) running in an east/west direction on SE Jones Road from the lift station, (2) running in an east/west direction on SE 135th Street in the west side of the study area, (3) running generally east/west on SE 141st Street, (4) running west on SE 135th Street in the northeast corner of the East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 38 f L 1 o�Y o� Chapter Three NT— study area, and running generally to the northwest on 154th Place SE (see Figure 17, Sanitary Sewer Option E). The estimated pipe costs for Option E are the highest among the options due to the large amount of force main needed. The estimated pipe costs are $37,507,000. This cost estimate includes unit U costs for each size pipe including side sewer, materials, manholes, trenching, backfill, paving, and traffic control costs. Lift Stations Option E contains five proposed lift stations: the SE Jones Road station, the SE 135th Street station, the SE 141st Street station, on SE 135th Street in the northeast corner of the study area, and the 154th Place SE station again. Having five lift stations makes this the most venerable sewer system proposal. The operating and maintenance costs will be the highest of all the options. For example, the operation and maintenance costs for the five lift stations in this option will be $93,100 per year(see Table 4-3, Total Staff Time and Cost Estimates for Options A-E). The lift station at SE Jones Road is estimated to have a peak hour quantity of 100 gpm and an average quantity of 50 gpm. The beginning elevation of the force main is 88 feet and ends at 100 ' feet. The length of force main required for this section is approximately 720 feet. This station contains two pumps each with a capacity of 100 gpm and is estimated to run 4,380 hours per year. ' The SE 135th Street station has a smaller capacity than the Jones Road station. It is designed to handle a peak hour quantity of 20 gpm and have an average quantity of 10 gpm. This station moves sewage from a beginning elevation of 370 feet to 375 feet. The force main required for this lift station is an estimated 400 feet of 4-inch PVC. Two pumps will also be housed at this station, each with a capacity of 20 gpm. This station is also expected to run 4,380 hours per year. 1111 The SE 141st Street station has a significantly larger peak and average quantities than the other two lift stations because it will serve a larger area. The peak quantity for this station is estimated to be 450 gpm, and the average quantity will be 100 gpm. Two pumps will be housed at this station as well. Both pumps must accommodate this increased peak quantity estimate individually. The pumps move sewage from an elevation of 310 feet to 395 feet. The estimated length of force main required for this station is 7,150 feet. ' The second lift station located on SE 135th Street has similar peak and average quantity rates as the SE 14et Street Lift Station. This lift station has an approximate peak quantity rate of 220 gpm, ' and an average quantity rate of 110 gpm. This station contains two pumps, as it is below the recommended peak rate quantity required for three or more pumps (Criteria for Sewage Works Design, DOE, Section 3.12). The pumps at this station move sewage from a beginning elevation of 434 feet to an elevation of 475 feet. The estimated length of force main required for this lift station is 815 feet and the station is expected to run 4,380 hours per year. P ■r East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 39 L •----3 11 i x otn 5t — l \ ISE 117th St ,• I _ �� W 1 f j Plill .Fc crH ' I 1.o —ifiilia,, I � } ! • 0 660 1320 2640 SE 124th St SE v3 LE IN FEET iii-r- BASIN ONE I iI _�`F T-SI <�` �I ING SEWER i 11 _� 1 — SED SEWER 11� _ I _ I .1 ; f – IMITS `–' 1 — • N GROWTH BOUNDARY *-fin t . — — SE zal St ' NE 3rd PI l' 1 I - 7anizi:ii N l• 0�P• ^� II a' • SE 30th St. �rSt c j SE131st St.�' `'- SE 132nd S _' ` > q SE 132nd St. I ¢ ¢ �o�•IL ! l SE 132nd St�jt�1 c- SE 133nd St. -. ._ ° a v > ` �'i > N N " _i' 1 2 .i........._ SE 132nd S; ^� mr -� Iit,-.--0 1 I "' `�I, N a. t I SE 133rd F i_ �j• - 1 !I a <��f �A — �1 I34��SE 2nd PI II �_� h St� o ---_ # �� 1 '. __ -I \ I u i d p\, N+ ,_; `�) ! SE i35t W I �� II SE 136fn, rte== _=_� iE` 5; \\ \� J Q SEI `� �1 �_ 111........ .=: � � �� I SSE 136th St 5 p\ - w Liberf Lane~! SCHOOL '£}f' t—BASIN THREES�41h y= tp �� '_SE 138th Pl. I SE138th PI. L uran wa -- I u�, SE 139th PI �� I ` •• SE 139th PI.r L i;+`- 1 G \�-- - a• SE 139cP1. �� BASIN FOUR [[ ) II1 BASI O sE T 1 ::,-- sE 140tn PI. , LL�� `----�St :_�1'` j1 O 4hH!142fld c_ I SE 140th t - J SE 142nd St •�' St. I :i j � T �� R2 ", 142nd St 1 1 \ �� t 1, �I - I_ ( +I �` t Sl E 121.4 St. r F ; _...,.. .....-_ ,......„,.-..„•[i- c (7 �� _.� _ L. r� _HI 43rd PI l,�r ��. �I� El I i �' + `'I 144th St.) _ 1 _,�� L _,7 Mit 145th PI. -4.'1, �- f II J� �_ •�jam�: ii 1 SE 144th t [ ��` i � \ � CEDAR RIVE. M \ � � �`��i'/ �'�` �� h� �,- 1 t ail _ 'Iv, / ifo 'l • A •,�.�b�1 / 1� -� Q i SE 146th P � a",r -!� yy 12 i.' 14.t �l P �I # „� Q\� �� J�` E 148th St '; I S � • ¢ { �.,%`-✓�` �4 S th 4�/ • • I� SF // SES 149th St1 -�- O _�� , :2 0,( en ton _ Mop/e V° irroV♦ \� �k 94-4 � ,�' \��Zr �-�°"es Ri Vm+\items\sscs-Fe Volt. HW ♦ „- � • y 'tom, SE Jones Rd EAST CEDAR RIVER BASIN / _ _ N Ave• ali, SE SEWER COLLECTION REPORT ,A0fh* SE Renton _ .n Rd ��.J *ay M ° °� FIGURE 17 co o �; SANITARY SEWER I mow/ OPTION E cctiy Chapter Three r ,,ti zoo The 154th Place Lift Station has the largest peak and average quantities of the five lift stations described in this option. The peak quantity for this station is 2,900 gpm, and the average quantity will be 1,000 gpm. This station houses three pumps to accommodate the large peak quantities. The pumps will pump sewage from a beginning elevation of 193 feet to 395 feet. The estimated 6 length of the force main required to do this is 9,030 feet. EAST PLATEAU INTERCEPTOR For the purpose of this study, we have shown Basin 4 being served by a sewer interceptor (East Plateau Interceptor) from 180th Avenue SE to the Maple Valley Highway. It is understood that construction of this interceptor would be in and around sensitive areas, including but not limited to the Cedar River and steep slopes. The route shown, as well as other gravity routes may be considered. Alternate methods of pipe installation, such as boring or micro tunneling may mitigate impacts to the slope or river. A gravity alternative would also be dependent upon a facility to move the flows from the discharge point of the trunk at approximately 177th Avenue SE to the existing King County Cedar River Trunk at 154th Place SE. For alternative consideration, a pump station that would move the flows to either the North Plateau or the East Renton Sub-basins could be built in lieu of the gravity interceptor. When the East Plateau Interceptor project is ready for design, a study to determine the type of sewer and routing will be performed. Due to the complexities of a gravity interceptor in this area, it is anticipated that a lift station would be of equal or lesser cost. The gravity interceptor, as shown, has been chosen to represent the project. The decision to construct this facility as either gravity or pump station is independent of the ' options described in this study and would not have a major impact on any of those options. East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 41 L Chapter Four COST COMPARISON INTRODUCTION This chapter evaluates the costs of the East Cedar River Collection options according to the financial criteria presented in Chapter 2. Two types of costs — 1) capital and 2) operation and maintenance will be discussed in this chapter. Costs for each option are discussed separately, then a cost comparison follows. The general cost discussions presented at the end of this chapter apply to all five options. Applying common unit cost factors to each element of the options generated costs for each of the options. For instance, a standard cost for each foot pipe was multiplied by the estimated number of feet of that pipe for a particular option. Costs were varied by size (e.g. larger pipes cost more per foot than smaller; or larger lift stations cost more per unit than smaller) and other relevant factors. Other relevant cost factors may include depth (it costs more to install a deep pipe than a shallow one) or whether a line is a force main or a gravity line. All capital costs have been updated to the March 1997 ENR cost index. Operation and maintenance costs also derive from the application of constants to the variable for each option. Constants considered in the cost calculations detailed below include such things as the cost of electricity and staffing hourly costs. The units of operation for each of the options to produce projected operation and maintenance costs multiplied these factors. EXPLANATION OF COSTS FOR EACH OPTION ' Option A Capital Costs The capital costs for this option is estimated to be $37,175,000. This cost can be broken into three parts: gravity line, $36,590,000; force main, $55,000; and lift station costs, $530,000. Capital costs for the sewer lines include materials, trenching, backfill, paving, side sewers, and traffic control. The Appendix includes tables of cost factors used in calculating capital costs. Operation and Maintenance Costs ' The total annual operating and maintenance (0 & M) costs for Option A is $ 80,910. This figure includes the estimated $110 power costs for the lift stations, and total number of man-hours required to maintain and operate the system (see Table 4-4: Comparison of Costs and Present Value for Options A-E). Operating costs for the lift stations are reached by multiplying the annual running time by the cost per kilowatt-hour($.05/kW*hr). East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 42 sal o` 'f 0 Chapter Four ilir .„..,„ k Work that falls under the maintenance category includes: • lift station, sewage pump, and motor maintenance; • checking the wet wells, I • cutting roots, and • grease removal. IWork that can be categorized under operating hours includes: • inspections, I • work logs, • staff meetings, and • cleaning. The estimated man-hours required to operate and maintain Option A is 2,531. The cost per man- hour is estimated to be $23.91. The lift station life is approximately 25 years, but the collection ii system's life is approximately 50 years, so the 0 & M costs are multiplied by 50 years to find the overall 0 & M costs for this option. j Figure 18 (Cost Breakdown of Option A) shows the costs of Option A and shows them in present value. An interest rate of 5.7% is used with an inflation rate of 3.2%. The real rate of Figure 18: Cost Breakdown of Option A interest used was 2.4%. $848 000 59,373.000 The total cost for Option A of$52.4 million dollars was derived using these L , q„i 4'a numbers. a '� {�,� � '� ;''�` $3,224 000 Option B - - \ \\. \\ $2.349 000 ~ h .\\ � �, Capital Costs j; �. � The estimated capital cost 11 for this option is estimated �' 4� to be $38,683,000. This ` • ..ti ;, x � A cost can be broken into 1 � �� the same three parts as in Option A: gravity line, 0 0 8,M Costs(50 Yea life) force main, and lift station 536,645 000 IN costs.SystemThe cost for the 0 Ltd Stations 0 Design gravity line construction I ■Saks Tax of this option is $36,594,000 which is slightly less than in Option A. However, the cost for the force main is $559,000, more than ten times the cost in Option A. Finally, the capital cost for the three lift I stations is $1,530,000. Capital costs for the sewer lines include materials, trenching, backfill, paving, side sewers, and traffic control. IEast Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 43 I 'w Gti-cY o4\ Chapter Four 11,7 re o w "w Operation and Maintenance Costs The total annual 0 & M costs for Option B is $104,780. This figure includes the estimated $19,880 power costs for the lift stations, and total number of man-hours required to maintain and operate the system. Operating costs for the lift Figure 19: Cost Breakdown of Option B stations is reached by 52,448,000 59.900 000 multiplying the annual running time by the cost per kilowatt-hour - "",',.,4'-': r53,406,000 ($.05/kW*hr). �. ,;',1:-: \ J � z p,, �o\, 53 042.000 ow Work that falls under F z \ maintenance includes: ; g Aim a v x C • lift station, sewage ,- n'T �4 lir pump, and motor P' ,� 3zz ' maintenance; , µ = w ..� , �� T I • checking the wet wells, • cutting roots, and (30&M Costs(50 Year Lite) I 537.153 000 ■Collection System D Lift • grease removal. Stations •Dem Work that can be •Sales Tax I categorized under operating hours includes: • inspections, I • work logs, • staff meetings, and • cleaning. The estimated man-hours required to operate and maintain this option is 2,704. The cost per man- hour is estimated to be $23.91. The overall 0 & M costs were found the same way as described Lunder Option A. Figure 19 (Cost Breakdown of Option B.) breaks down the costs of Option B and shows them in I present value. An interest rate of 5.7% is used with an inflation rate of 3.2%. The real rate of interest used was 2.4%. The total cost for Option B of$55.9 million dollars was derived using these numbers. ilii Option C ICapital Costs The capital cost for this option is estimated to be $40,211,000. This cost can be broken into the same three parts as above: gravity line, force main, and lift station costs. The cost for the gravity IEast Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 44 so o`�Y o� Chapter Four J r line construction of this option is $36,565,000. This is slightly less than Options A and B. In this u s option the capital cost of the force main is roughly $916,000 and the capital cost for the three lift stations is $2,730,000. The cost for these lift stations is the highest among the options due to the fact that there are two large lift stations required. Capital costs for the sewer lines include o• materials, trenching, backfill, paving, side sewers, and traffic control. Operation and Maintenance Costs - The total annual 0 & M costs for Option C is $131,600. This figure includes the estimated $42,400 power costs for the lift stations, and total number of man-hours required to maintain and operate the system. Operating costs for the lift stations is reached by multiplying the annual - running time by the cost per kilowatt-hour($.05/kW*hr). Figure 20: Cost Breakdown of Option C Work that falls under the am $10,462,000 maintenance category so,368,000 includes: hi , "�• • lift station, sewage pump, y,F E k` \ $3.599,000 and motor maintenance; - \\\,,,\ • checking the wet wells, I \ $3.821 000 • cutting roots, and • grease removal. I Work that can be categorized under operating hours includes: I • inspections, t O&M Cosh(50 Year life) • work logs, Sr 4810 00 E •Collection System • staff meetings, and CIt�Stations Ell Design • cleaning. ■Sales Tax The estimated man-hours required to operate and maintain this option is 2,884. The cost per man- hour is estimated to be $23.91. I Figure 20 (Cost Breakdown of Option C) breaks down the costs of Option C and shows them in present value. An interest rate of 5.7% is used with an inflation rate of 3.2%. The real rate of interest used was 2.4%. The total cost for Option C of$59.7 million dollars was derived using these numbers. Option D ii Capital Costs The capital cost for this option is estimated to be $38,282,000. The cost for gravity line k construction of this option is $36,519,000, which is the least expensive of all the options for gravity sewer construction. In this option, the capital cost of the force main is roughly $263,000. Finally the capital cost for the three lift stations is $1,500,000 which is among the lowest between IEast Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 45 G��Y (:),,\ Chapter Four • • r the options. Capital costs for the sewer lines include materials, trenching, backfill, paving, side sewers, and traffic control. r Operation and Maintenance Costs • The total annual 0 & M costs for Option D is Figure 21: Cost Breakdown of Option D $90,910 which includes 59796.000 SII52.400,000 the estimated $2,210 power costs for the lift stations, and total .^ a.t »a- S3,370,000 •• number of man hours I- °: � required to maintain and i"�' N` �`\‘ s2 63900° operate the system. Operation costs for the 's«n 4 lift stations is reached by a multiplying the annual , - ;100P- running time by the cost ",.,... ., ' per kilowatt-hour his ($.05/kW*hr). Do&M Costs(SO Year Life) I Work that falls under the maintenance category 536,782,000 •Cogect on System °Iifstsbons ®Design includes: ■Sales Tax I • lift station, sewage pump, and motor maintenance; • checking the wet wells, • cutting roots, and • grease removal. hi Work that can be categorized under operating hours includes: • inspections, II • work logs, • staff meetings, and • cleaning. IThe estimated man-hours required to operate and maintain this option is 2,867. The cost per man- hour is estimated to be $23.91. iii Figure 21 (Cost Breakdown of Option D) above, breaks down the costs of Option D and shows them in present value. An interest rate of 5.7% is used with an inflation rate of 3.2%. The real L rate of interest used was 2.4%. The total cost for Option D of$55.0 million dollars was derived using these numbers. IIIEast Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 46 ,CY 0 Chapter Four Option E Capital Costs The capital cost for this option is estimated to be $40,707,000. The cost for gravity line eig construction of this option is higher than in Option D, $36,584,000, which is the third most expensive of all the options for gravity sewer construction. In this option the capital cost of the force main is roughly $923,000. Finally the capital cost for the three lift stations is $3,200,000,the highest of the options. Capital costs for the sewer lines include materials, trenching, backfill, paving, side sewers, and traffic control. Operation and Maintenance Costs The total annual 0 & M Figure 22: Cost Breakdown of Option E costs for Option E is ,� $�°,657.°°° $144,450. This figure 55.120,000 includes the estimated $51,350 power costs for x3,666°°° the lift stations, and total number of man-hours 54.194000 required to maintain and operate the system. * .: Operating costs for the lift 1 t < stations is reached by multiplying the annual running time by the cost ' per kilowatt-hour ($.05/kW*hr). Option E has the highest total D 0&M Costs(5O Yew Wife) 537.507.°°° ■ Collection Sysiem annual cost due to the ° S amount of electricity, the ■ Design IN Saes Tax amount of maintenance, and the total number of man-hours needed to operate five lift stations. Work that falls under the maintenance category includes: • lift station, sewage pump, and motor maintenance; ' • checking the wet wells, • cutting roots, and • grease removal. Work that can be categorized under operating hours includes: • inspections, • work logs, • staff meetings, and • cleaning. East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 47 me o`�Y °t Chapter Four AIX i „e The estimated man-hours required to operate and maintain this option is 3,047. The cost per man- hour is estimated to be $23.91. .. Figure 22 (Cost Breakdown of Option E) shows the costs of Option E and shows them in present value. An interest rate of 5.7% is used with an inflation rate of 3.2%. The real rate of interest used was 2.4%. The total cost for Option E of$61.1 million dollars was derived using UP these numbers. COST COMPARISON FOR ALL THE OPTIONS Capital Costs Evaluation of capital costs considers total cost (including construction costs), life cycle cost, present value, and cost per ERU. These evaluations were performed for comparable time frames for each option. Figure 23: Total Pipe Costs for Options A-E The main capital cost ,3„ _ / / associated with all five IV options is the pipe costs. As $37 MGM much as 70% of the total cost is a result of these pipe costs. As can be seen in Figure 23, $37 000.000 ss16pa) 5923,000g (Total Pipe Costs for a / °°° Options A-E), Option A is : ..,. t4'`' e the least expensive, in terms _,:t7.-'7 a� =' 1263a0 of pipe costs, of these three .`` koptions. Option A requires less 18-inch gravity pipe thanSR ®� $36 9:01330 �.� 05 $s 9 93.BCC does Options B and C. It =- 6 also requires less force main than does Options B and C. ' AOra=B Opsm C Op„op Optvon E ii, Again, these three options o a o Force Men are grouped together due to similar basin sizes. The pipe costs for Option D are less than for Option E. Overall, the pipe costs I for Option A are the least of all the options. A second important factor to consider when figuring capital costs in these options is the cost of lift I stations. All five options vary in the number of lift stations required, ranging from two in Option A, to five in Option E. The number and size of the required lift stations contributed significantly to the variances in costs among the five options. Lift station life cycle costs include power and maintenance elements. East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 48 SNP cj� Y��°.n Chapter Four • Table 4-1, (Sizing and Table 4-1: Sizing and Cost Estimates for Lift Stations for Options A-E Cost Estimates for Lift Approx Est WI Peak Hour End Length Head Total Stations for Options A- Lift Station Flow Begin Elev Elev of FM Loss Head Cost E), estimates the capital Location (gpm) (ft) (ft) (ft) (ft) Rey(ft) Estimate cost for all of the Option A SE Jones Road 100 88 100 720 5 17 $ 310,000 ~ SE 135th Street 20 370 375 409 0.15 5.15 $ 220,000 proposed lift stations m Option B SE Jones Road 100 88 100 720 5 17 $ 310,000 options A through E. The SE 135th Street 20 370 375 409 0.15 5.15 $ 220,000 table shows the SE 141st Street 1400 310 395 7,158 250 335 $ 1,000.000 mg Option C SE Jones Road 100 88 100 720 5 17 $ 310,000 approximate peak hour SE 135th Street 20 370 375 409 0.15 5.15 $ 220,000 capacities in gpm for each SE 141st Street 1400 310 395 7,158 215 300 $ 1,000,000 154th Place SE 1900 193 395 9,036 145 347 $ 1,200,000 ON lift station. This peak Option D SE Jones Road 100 88 100 720 5 17 $ 310,000 capacity is then used to SE 135th Street 20 370 375 409 0.15 5.15 $ 220,000 SE calculate the cost for each 166 13 Street& 14th AveA220 434 475 815 35 76 $ 370,000 - lift station. The cost SE 141st Street 450 310 359 2,759 45 94 $ 600,000 estimates are based on Option E SE Jones Road 100 88 100 720 5 17 $ 310,000 SE 135th Street 20 370 375 409 0.15 5.15 $ 220,000 two different size lift SE 135th Street& stations: (1) a large lift164th Ave 220 434 475 815 35 76 $ 370,000 SE 141st Street 450 310 395 7,158 155 240 $ 600,000 station which has a peak 154th Place SE 2900 193 395 9.036 200 402 $ 1,700.000 capacity of greater than Note:Cost estimates assume open site conditions,limited dewatering/environmental siting issues. Cost estimates also do not include force main costs. These costs are included under pipe costs. to 1000 gpm, and (2) a small lift station with a peak capacity of less than 1000 gpm. The large lift station contains three or more hi pumps, whereas the smaller lift station has less than three pumps. In this study, Option A only requires two small lift stations. Option B requires two small and one large lift station. Option C would require two small and two large lift stations. Option D would only require four small lift Istations. Finally, Option E would require four small lift stations and one large station. 1 Table 4-2: Estimates of Annual Power Costs for Lift Stations for Options A-E Operation and Approx Total Approximate Annual Cost for Maintenance Costs Avg Flow Head Flow In Flow Out Running Time Power (gpm) Req(ft) (cfs) (cfs) Factor HP kW per Year(hrs) (rounded) Another relevant factor when I Option A 50 17 0.11 0.22 2.8 0.6 0.46 4,380 $100 estimatingcosts are operation 10 5.15 0.02 0.04 0.8 0.04 0.03 4,380 $10 P Option B 50 17 0.11 0.22 2.8 0.6 0.46 4,380 $100 and maintenance costs. 10 5.15 0.02 0.04 0.8 0.04 0.03 4,380 $10 500 335 1.11 3.12 54.3 169.4 126.30 3,130 $19,770 Evaluation of operation and I Option C 50 17 0.11 0.22 2.8 0.6 0.46 4,380 $100 10 5.15 0.02 0.04 0.8 0.04 0.03 4,380 $10 maintenance costs should 500 300 1.11 3.12 48.6 151.7 113.11 3,130 $17.700 considerower, labor, and 600 347 1.34 4.23 56.2 238.1 177.55 2,770 $24,590 1� Option D 50 17 0.11 0.22 2.8 0.6 0.46 4,380 $100 equipment costs. I105.15 0.02 0.04 0.8 0.04 0.03 4,380 $10 110 76 0.25 0.49 12.3 6.0 4.50 4,380 $990 100 94 0.22 1.00 15.2 15.3 11.39 1,950 $1,110 Option E 50 17 0.11 0.22 2.8 0.6 0.46 4,380 $100 Table 4-2, (Estimates of 10 5.15 0.02 0.04 0.8 0.04 0.03 4,380 $10 Annual Power Costs for Lift I11076 0.25 0.49 12.3 6.0 4.50 4,380 $990 100 zoo 0.22 1.00 38.9 39.0 29.08 1,950 $2,840 Stations for Options A-E) 1000 402 223 6.46 65.2 421.0 313.95 3,020 $47,410 Pump efficiency= 0.7 Cycles per day= 4.59 uses estimates of average flow Max Holding time(min)= 10 Cost per kWlir= $0.05 in gallons per minute for each Ilift station to calculate the annual power costs. The approximate annual running time and amount of power needed to run the pumps is multiplied to determine the kW/hr for each lift station. This number is then multiplied by $.05 to determine the annual power costs for the lift stations. Option ill East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 49 MI c�T" o, Chapter Four .P,vT-e w A has the lowest annual power costs because it only needs to supply power for two small lift stations. Option E has the highest annual power costs due to the power needed to run four small N W and one large lift station. In addition to the sizing and annual power costs, staff time to maintain the lift station must also be UP considered. The Table 4-3: Total Staff Time and Cost Estimates for Options A-E estimates of staff Cost/Man Hour°23.91 time and cost are u• added to the Option A Option B Option C Option D Option E Total Annual Hrs. 2,531 2,704 2,884 2,867 3,047 annual power Labor Cost $60,523 $64,662 $68,962 $68,539 $72,859 costs for the lift Line Flushing $20,264 $20,210 $20,218 $20,202 $20,218 stations to Total Annual O&M $80,800 $84,900 $89,200 $88,700 $93,100 determine the total - operation and maintenance costs for Options A through E. Option A was estimated to need a total of 2,533 man-hours per year for operation and maintenance ur (0 & M). An estimated 3,047 man-hours per year would be needed to operate and maintain Option E. Again, this is due to the fact that Option A would only have two lift stations to maintain, whereas Option E would have five. This translates into Option A having a total 0 & M M• cost of$80,800 annually and Option E a total of$93,100 annually (plus power costs). These two options are singled out because they represent the least and most expensive annual 0 & M costs (see Table 4-3, Total Staff Time and Cost Estimates for Options A-E). b All the costs described above are then used to determine a total option cost. This cost needs to be Iprojected over the life cycle of the sewer system and then be converted into a present dollar value. Table 4-4: Comparison of Costs and Present Value for Options A-E To find the total Option A Option B Option C Option D Option E Annual Power $110 $19,880cost of the options, P$42,400 $2 210 $51,350 the present value of Annual Staff Time $80,800 $84,900 $89,200 $88,700 $93,100 capital costs Total Annual Cost $80,910 $104,780 $131,600 $90,910 $144,450 (Collection System Collection System $36,645,000 $37,153,000 $37,481,000 $36,782,000 $37,507,000 and Lift Stations), 0 Lift Stations $530,000 $1,530,000 $2,730,000 $1,500,000 $3,200,000 & M costs (over 50 I 0&M Costs(50 Year Life) $2,349,000 $3,042,000 $3,821,000 $2,639,000 $4,194,000 years), surveying Collection System $36,645,000 $37,153,000 $37,481,000 $36,782,000 $37,507,000 and engineering Lift Stations $848,000 $2,448,000 $4,368,000 $2,400,000 $5,120,000 Design $9,373,000 $9,900,000 $10,462,000 $9,796,000 $10,657,000 costs (Design), and I Sales Tax $3,224,000 $3,406,000 $3,599,000 $3,370,000 $3,666,000 Washington State $52,439,000 $55,949,000 $59,731,000 $54,987,000 $61,144,000 sales tax are added Lift station cost assumes partial replacement of lift station components after 25 years as a complete rebuild is typically not necessary. together. Lift • Collection System Life(years)=50 interest=5.7% inflation=3.2% station costs are Lift Station Life(years)=25 real rate of interest=2.4% calculated assuming that after 25 years, L 60% of the lift station components will need to be replaced. These calculations are based on an interest rate of 5.7%, and inflation rate of 3.2%, and a real rate of interest of 2.4%. These cost estimates reflect the design life of the system being 50 years. Although present value of costs are LEast Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page 50 MP C."" 4, Chapter Four Figure 24: Comparison of Total Costs for Options A-E included under the --- __— - I capital costs heading, °°°°° Table 4-4, (Comparison of Costs °°°-°°a c" ` and Present Value for Options A-E), is placed MOM--"7" at the end of the chapter . ,,,,,"?' Li because it summarizes „... the total costs for all of the options. a �.� /� / p H • � „ „„„ ,‘,./, ///. ,/,A /, Mt ❑Saks Taa $15,x,000 ❑DenD IA Stats V ' : O&M Costs(50 Year am) E10.00,000dr ,„..,Ala 0CoO—Syst— .._,., Option A Optima Option C OptionD Option I I I I I I I I I I East Cedar River Basin Sewer Collection Report 05/20/99 [L?REngineering,Inc. Page 51 I APPENDIX I 1 1 1 1 i . 1 1 1 1 1 1 i r al 0 °1 Appendix ea Ns so Table A-1: Pipe Cost Breakdown by Size Gravity Force Main am Diam. (inches) Cost Diam. (inches) Cost 8"PVC $140/foot 4" $50/foot 10"PVC $140/foot 6" $60/foot ma 12"PVC $150/foot 8" $70/foot 15"PVC $160/foot 12" $70/foot 15"Transmission $130/foot 18"PVC $170/foot ar 18"Transmission $140/foot 24"PVC $160/foot r. 'rr Table A-2: Estimates of Sewer Pipe Lengths for Options A-E am Lengths of Pipe(feet) Pipe Diam Option A Option B Option C Option D Option E Gravity F.M. Gravity F.M. Gravity F.M. Gravity F.M. Gravity F.M. 4 0 1,100 0 1,100 0 1,100 0 1,900 0 1,900 me 6 0 0 0 0 0 0 0 2,800 0 3,300 8 210,500 0 208,800 7,200 211,600 3,300 210,500 0 208,500 0 8(dry) 8,000 0 8,000 0 8,000 0 8,000 0 8,000 0 10 13,800 0 13,200 0 11,400 0 14,600 0 16,000 0 air 12 10,100 0 8,400 0 8,200 9,000 6,400 0 4,400 9,000 15 6,800 0 4,400 0 4,800 0 8,000 0 7,400 0 15(Trans) 1,900 0 1,000 0 3,600 0 2,200 0 2,200 0 18 0 0 4,400 0 2,300 0 1,900 0 2,000 0 iie 18(Trans) 8,700 0 9,600 0 6,000 0 7,400 0 7,400 0 24 0 0 1,300 0 3,300 0 0 0 3,300 0 Total 259,800 1,100 259,100 8,300 259,200 13,400 259,000 4,700 259,200 14,200 NW VW VW Yr rr East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 5/20/99 AP-1 to err ;`kt Appendix AAA. S is Table A-3: Estimate of Pipe Costs for Options A, B, & C NO Pipe Diam Option A Option B Option C (inches) Gravity Force Main Gravity Force Main Gravity Force Main 4 $55,000 $55,000 $55,000 ow 8 $29,470,000 $29,232,000 $504,000 $29,624,000 $231,000 8(dry) $1,120,000 $1,120,000 $1,120,000 10 $1,932,000 $1,848,000 $1,596,000 12 $1,515,000 $1,260,000 $1,230,000 $630,000 aro 15 $1,088,000 $704,000 $768,000 15(trans) $247,000 $130,000 $468,000 18 $0 $748,000 $391,000 me 18(trans) $1,218,000 $1,344,000 $840,000 24 $0 $208,000 $528,000 Total $36,590,000 $55,000 $36,594,000 $559,000 $36,565,000 $916,000 WO MI - Table A-4: Estimate of Pipe Costs for Options D & E Pipe Diam Option D Option E IN (inches) , Gravity Force Main Gravity Force Main 4 $95,000 $95,000 6 $168,000 $198,000 go 8 $29,470,000 $29,190,000 8(dry) $1,120,000 $1,120,000 10 $2,044,000 $2,240,000 "" 12 $960,000 $660,000 $630,000 15 $1,280,000 $1,184,000 15 (trans) $286,000 $286,000 W' 18 $323,000 $340,000 18(trans) $1,036,000 $1,036,000 24 $0 $528,000 +o Total $36,519,000 $263,000 $36,584,000 $923,000 it a ow East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 5/20/99 AP-2 amp -1 Appendix ..rr lir Table A-5: Estimates of Staff Time for Options A-E err Existing System Option A Option B Option C Option D Option E Gravity(miles) 154 49 49 49 49 49 rr' Gravity(feet) 813,120 259,800 259,100 259,200 259,000 259,200 Increase in Gravity 32% 32% 32% 32% 32% Lift Stations 21 2 3 4 4 5 or Pumps 42 4 7 10 8 11 Manholes 3700 650 648 648 648 648 Maintenance Man Hours ow Man hrs/unit/year Option A Option B Option C Option D Option E Lift Station Maintenance 16 32 48 64 64 80 Sewage Pump and " Motor Maintenance 8 32 56 80 64 88 Check Wet Wells 17 35 52 69 69 87 Root Cutting 0.04 245 245 245 245 245 WA Grease Removal 0.02 33 33 33 33 33 Total 377 434 491 475 533 Operation Man Hours No Existing System Option A Option B Option C Option D Option E Lift Station Inspection 2,555 243 365 487 487 608 Video Inspection 1,560 498 497 497 497 497 rr Work Logs 2,600 831 828 829 828 829 Vehicle Inspection 650 208 207 207 207 207 Staff Meetings 910 291 290 290 290 290 Tool and m' Equipment Cleansing 260 83 83 83 83 83 Total 8,535 . 2,154 2,271 2,393 2,391 2,515 ow yip r "r iir 40 East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 5/20/99 AP-3 0.s�Y 04, Abbreviations cfs- cubic feet per second cy- cubic yards DWF- Dry Weather Flow EIS- Environmental Impact Statement rr ERU- Equivalent Residential Unit fps- feet per second GMA- Growth Management Act gpad- gallons per acre per day gpd- gallons per day gpm- gallons per minute r. HDPE- High Density Polyethylene I&I- Infiltration and Inflow O &M- Operating& Maintenance (costs) irr PVC- Polyvinyl Chloride UGB- Urban Growth Boundary dr Or • NMI MEI East Cedar River Basin Sewer Collection Report RI-12 Engineering,Inc. 05/20/99 Page A-1 O��Y orL� Glossary of Terms illr Building Sewer- In plumbing,the extension from the building drain to the public sewer rr, or other place of disposal. Also called house connection,private side sewer, or lateral. - Capacity Problems- When flow rates exceed what the facility is designed to convey. Collector Sewer- A sewer that discharges into a trunk or interceptor sewer and has no .rr other common sewer tributary to it, only building or lateral sewers. Combined Sewer- A sewer intended to receive both wastewater and storm or surface — water. Domestic Sewage- Residential,business, commercial, and industrial sewage. 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 0.85 which is OW then used in the Manning's equation. Infiltration- Infiltration is the entrance of groundwater into the sanitary sewer ismo system through cracks,pores,breaks,and defective joints in the sewer- piping network. tom 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 collector or trunk sewers, or force mains and conveys 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. ni 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. +rr Main or Trunk Sewer- The principal sewer to which collector sewers are tributary; sewer that receives many collector branches and serves a subbasin. 10 Manning Equation- The Manning equation is used to design and analyze wastewater flow characteristics of sanitary sewers. OS East Cedar River Basin Sewer Collection Report RH2 Engineering Inc. 05/20/99 Page G-1 0li °It Glossary of Terms Sanitary Sewer- A gravity 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. rr Sewage- See wastewater. �• Side Sewer- See building sewer. Storm Sewer- A sewer that carries 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. Wastewater Collection System- The delivery of wastewater from its origin to place of treatment;also .r includes all accessory facilities such as collectors, trunk and interceptor lines, force mains,lift stations, treatment plants and the like. eie VW VW WWI East Cedar River Basin Sewer Collection Report RI-I2 Engineering Inc. 05/20/99 Page G-2 Bibliography 41-krq City of Renton Comprehensive Plan, City of Renton (February 1995). Criteria for Sewage Works Design,Washington State Department of Ecology (December 1998). East Renton Interceptor Project- Final Environmental Impact Statement,RH2 Engineering (November 1992). East Renton Interceptor Project-Addendum Environmental Impact Statement, RH2 Engineering (April 1993). King County Comprehensive Plan,King County Department of Development and Environmental Services (November 1994). Q.,, Long Range Wastewater Management Plan (Comprehensive Sewer Plan) - City of Renton,RH2 Engineering(March 1992). .r wag East Cedar River Basin Sewer Collection Report RH2 Engineering,Inc. 05/20/99 Page B-1 irr