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HomeMy WebLinkAboutRS_TIR_230816_V2©2023 D. R. STRONG Consulting Engineers Inc. Kennydale Lots
Technical Information Report Renton, Washington
TECHNICAL INFORMATION REPORT
for
KENNYDALE LOTS
1008 N 33rd Pl, Renton, Washington 98056
8/16/2023
____________________________________________________________________________
DRS Project No. 23015
Renton File No. C23002786
Applicant
Justin Lagers
NW Seattle Builders, LLC
9675 SE 36th Street, Suite 105
Mercer Island, WA 98040
Report Prepared by
D. R. STRONG Consulting Engineers, Inc.
620 7th Avenue
Kirkland, WA 98033
(425) 827-3063
Report Issue Date
August 16, 2023
©2023 D. R. STRONG Consulting Engineers Inc. Kennydale Lots
Technical Information Report Renton, Washington
TECHNICAL INFORMATION REPORT
KENNYDALE LOTS
TABLE OF CONTENTS
SECTION I ...................................................................................................................... 4
Project Overview ......................................................................................................... 4
Predeveloped Site Conditions ..................................................................................... 4
Developed Site Conditions .......................................................................................... 4
Natural Drainage System Functions ............................................................................ 5
SECTION II ................................................................................................................... 16
Conditions and Requirements Summary ................................................................... 16
SECTION III .................................................................................................................. 19
Off-Site Analysis ........................................................................................................ 19
Task 1: Define and Map Study Area ...................................................................... 19
Task 2: Resource Review ...................................................................................... 19
Task 3: Field Inspection ......................................................................................... 27
Task 4: Drainage System Description and Problem Descriptions .......................... 28
Task 5: Mitigation of Existing or Potential Problems .............................................. 28
SECTION IV .................................................................................................................. 30
Flow Control, Low Impact Development (LID) and Water Quality Facility
Analysis and Design .................................................................................................. 30
Existing Site Hydrology .............................................................................................. 30
Developed Site Area Hydrology ................................................................................. 32
Performance Standards ............................................................................................. 34
Flow Control system .................................................................................................. 34
Water Quality Treatment System ............................................................................... 35
SECTION V ................................................................................................................... 36
Conveyance System Analysis and Design ................................................................ 36
SECTION VI .................................................................................................................. 39
Special Reports and Studies ..................................................................................... 39
SECTION VII ................................................................................................................. 40
Other Permits ............................................................................................................ 40
SECTION VIII ................................................................................................................ 41
CSWPPP Analysis and Design (Part A) .................................................................... 41
SWPPP Plan Design (Part B) .................................................................................... 42
SECTION IX .................................................................................................................. 43
Bond Quantities, Facility Summaries, and Declaration of Covenant .......................... 43
DEVELOPMENT ENGINEERING
SAMorman 10/05/2023
©2023 D. R. STRONG Consulting Engineers Inc. Kennydale Lots
Technical Information Report Renton, Washington
SECTION X ................................................................................................................... 44
Operations and Maintenance Manual ........................................................................ 44
APPENDICES ............................................................................................................... 45
Appendix “A” Bond Quantity Worksheet .................................................................... 46
Appendix “B” WWHM Report ..................................................................................... 47
List of Figures
Figure 1 TIR Worksheet .................................................................................................. 6
Figure 2 Vicinity Map ..................................................................................................... 11
Figure 3 Drainage Basins, Subbasins, and Site Characteristics ................................... 12
Figure 4 Soils ................................................................................................................ 13
Figure 5 City of Renton Topography Map ..................................................................... 20
Figure 6 City of Renton Coal Mine Hazard Areas Map.................................................. 21
Figure 7 City of Renton Flood Hazards Map ................................................................. 22
Figure 8 City of Renton Streams and Wetlands Map .................................................... 23
Figure 9 City of Renton Landslide Hazards Map ........................................................... 24
Figure 10 City of Renton Seismic Hazard Areas Map ................................................... 25
Figure 11 FEMA Map .................................................................................................... 26
Figure 12 King County iMap Drainage Complaints Map................................................ 27
Figure 13 Offsite Analysis Downstream Map ................................................................ 29
Figure 14 Predeveloped Area Map…………………………………………………………..31
Figure 15 Developed Area Map…………………………………………………………...…3 3
©2023 D. R. STRONG Consulting Engineers Inc. Page 4 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
SECTION I
PROJECT OVERVIEW
The Site (Tax Parcel No. 334210-2460) is located at 1008 N 33rd Place, in Renton,
Washington 98056. The Project is the proposed frontage improvements for one single-
family parcel and the demolition of the existing house on this parcel within King County
jurisdiction. The Project is subject to Directed Drainage Review. The Project will meet
the drainage requirements of the 2022 City of Renton Surface Water Design Manual
(Manual).
PREDEVELOPED SITE CONDITIONS
The total Site area for Tax Parcel No. 334210 -2460 is approximately 10,806 (0.248
acres). The Parcel is zoned R-8, is located in City of Renton, and currently is developed
with single family residence amd associated walk and driveway. The Site slopes from
northeast to southwest with grades of 4 -9%. The Site is bordered by a single family
residence to the north, west, and east, and N 33 rd Place to the south. There is 2,729 s.f.
of existing impervious area onsite. This area is devided into house roof (2,149 s.f.),
exposed deck (236), asphlat driveway (219 s.f.), and stone walkway (125 s.f.). The
remaining lot area is currenly undeveloped with existing vegetated areas. Currently,
stormwater runoff from the Site sheet flows southwesterly towards the drainage system
in N 33rd Place. Access to the home is from N 33rd Place to the south.
DEVELOPED SITE CONDITIONS
The Site is originally composed of two parcels which the applicant is planning to
establish again once the existing house is demolished. Each parcel has a total area of
5,403 s.f. The Project area will be defined as the existing two parcels that make up th e
current parcel and required improvements in the frontage along N 33 rd Place. Therefore,
the total project area is approximately 12,361 s.f. (0.284 acres).
Per the City of Renton Zoning Code, the maximum impervious surface area for R -8
zone is 65%. Also, there will be a 1.5-feet right-of-way dedication along the frontage.
This means, 6,926 s.f. is assumed to be impervious onsite. An additoinal 1,178 s.f. of
impervious surface will be added to the frontage. A total of 8,104 s.f. of new plus
replaced impervious surface is being added to the Project area. This impervoius area
will consist of the building roofs, driveways, and frontage improvements. The remainder
of the Project area will consist of residential landscaping and other pervious surfaces.
Per Geotechnical Engineering Evaluation the Site is not suitable for infiltration.
However, basic dispersion treaches will be utilized to mitigate at least 10% of
impervious surface area onsite. These BMP’s will be preliminarily designed in this report
and shall be reassessed and fully designed during the building permit(s).
The Site falls within the Peak Rate Flow Control Standard area matching existing Site
conditions. Per Section 1.2.3.1.A., “Exceptions” in the Manual, the projecy is exempt
from flow control facility requirements due to the fact that the developed site conditions
for the project Site will increase the 100 -year peak flow from the existing conditions by
less than 0.15 cfs using 15-minute time steps. See section IV for a more detailed
breakdown of how the Site meeting this exception.
©2023 D. R. STRONG Consulting Engineers Inc. Page 5 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
Total new or replaced Pollution Generating Impervious Surface (PGIS) for the project
will be approximately 1,427 s.f. in the form of two new residential driveways and
frontage improvements along the Site. Per Section 1.2.8 of the Manual, the project is
exempt from providing a water quality facility due to less than 5,000 s.f. of new plus
replaced PGIS is being added and less than ¾ of an acre of new PGPS being added .
NATURAL DRAINAGE SYSTEM FUNCTIONS
A review of the SCS soil map for the area (see Figure 4) indicates the soil type present
on site is Indianola loamy sand material, 5 to 15 percent slopes (InC). Per the Manual,
this soil type is classified as “Outwash” material. The SCS descriptions follow Figure 4.
In evaluating the upstream area, we reviewed the City of Renton GIS Maps as well as
performed a field reconnaissance on March 13, 2023 under rainy conditions. There is
approximately 19,153 s.f. (0.440 acres) of upstream tributary area to the project area
coming from the adjacent parcels to the east. However, all this runoff sheet flows over
residential lawns which facilitate dispersion and eventually infiltration. Nevertheless,
minimal upstream runoff is expected to sh eet flow onsite.
The entire Site has a moderate grade sloping to the southwest. The Site is contained
within one Threshold Discharge Area (TDA) that contains two Natural Discharge Areas
(NDAs). NDA 1 for the Site drains as sheet flow across the western and southern
property lines into adjacent properties to the west and N 33rd Place to the south.
Minimal runoff sheet flows from NDA 2 across the northern property line; however, it
converges back with the NDA 1 runoff within ¼ miles. Stormwater runoff from adjacent
properties to the west eventually drains toward N 33rd Place to the south within ¼ mile
as well. Runoff flows in a westerly direction through a series of catch basins and pipes
along N 33rd Place. The 12-inch storm main along N 33rd Place connects to a Type 2
catch basin along Burnett Ave N, its runoff flows on a 24-inch pipe in a northerly
direction. On Burnett Ave N and N 34 th St, the storm main turns westward and connects
through a series of Type 2 catch basins and eventually connects to the main along Lake
Washington Blvd N, the runoff flows in a southerly direction for approximately 140 feet
and turns west before reaching a Type 1 catch basin across Lake Washington Blvd N
and finally reaching its outfall on Lake Washington approximately ¼ mile from the Site .
©2023 D. R. STRONG Consulting Engineers Inc. Page 6 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
FIGURE 1
TIR WORKSHEET
TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
Part 1 PROJECT OWNER AND
PROJECT ENGINEER Part 2 PROJECT LOCATION AND
DESCRIPTION
Project Owner: NW Seattle Builders, LLC
Phone: (253) 405-5587
Address: 9675 SE 36th Street, Suite 105
Mercer Island, WA 98040
Project Engineer: Yoshio L. Piediscalzi, P.E.
Company: D. R. STRONG Consulting
Engineers Inc.
Phone: (425) 827-3063
Project Name: Kennydale Lots
City Permit#:
Location:
Township: 24 North
Range: 05 East
Section: 32
Site Address: 1008 N 33rd Pl, Renton,
WA 98057
Part 3 TYPE OF PERMIT APPLICATION Part 4 OTHER REVIEWS AND PERMITS
Landuse Services
Subdivision / Short Subdivision / UPD
Building Services: M/F / Commercial / SFR
Clearing and Grading
Right-of-Way
Other:
DFW HPA Shoreline Mngmt
COE 404 Structural
DOE Dam Safety Rockery/Vault
FEMA Floodplain ESA Section 7
COE Wetlands
Other:
Part 5 PLAN AND REPORT INFORMATION
Technical Information Report
Type of Drainage Review
(circle):
Date (include revision dates): August 16, 2023
Date of Final:
Site Improvement Plan (Engr. Plans)
Type (circle one): Full / Modified / :
Small Site
Date (include revision
dates):
Date of Final:
Part 6 SWDM ADJUSTMENT APPROVALS
Type (circle one): Standard / Blanket
Description: (include conditions in TIR Section 2)
None_required_or_provided.____________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
Date of Approval:
☐ Full
☐ Targeted
☐ Simplified
☐ Large Project
☒ Directed
©2023 D. R. STRONG Consulting Engineers Inc. Page 7 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
Part 7 MONITORING REQUIREMENTS
Monitoring Required: Yes / No
Start Date:
Completion Date
Describe:
Re: SWDM Adjustment No. _____________
Part 8 SITE COMMUNITY AND DRAINAGE BASIN
Community Plan: Renton Comprehensive Plan
Special District Overlays: N/A
Drainage Basin: Cedar River Watershed, East Lake Washington Basin, West Kennydale
subbasin
Stormwater Requirements: Exempt
Part 9 ONSITE AND ADJACENT SENSITIVE AREAS
River/ Stream:
Lake
Wetlands
Closed Depression
Floodplain
Other
Steep Slope
Erosion Hazard
Landslide Hazard
Coal Mine Hazard
Seismic Hazard
Habitat Protection
Part 10 SOILS
Soil Type
InC
Slopes
5-15%
Erosion Potential
Low to Moderate
High Groundwater Table Sole Source Aquifer
other Seeps/Springs
Additional Sheets Attached
©2023 D. R. STRONG Consulting Engineers Inc. Page 8 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
Part 11 DRAINAGE DESIGN LIMITATIONS
REFERENCE
Core Requirement #2 – Offsite Analysis
_______
Additional Sheet Attached
LIMITATION / SITE CONSTRAINT
Part 12 TIR SUMMARY SHEET
Threshold Discharge Area: Site comprised of one TDA
(name or description)
Core Requirements (all 9 apply)
Discharge of Natural Location Number of Natural Discharge Locations: 1
Offsite Analysis Level: 1 / 2 / 3 dated: 03/13/2023
Flow Control Standard: Peak Rate Flow Control Standard Areas
(incl. facility summary sheet) or Exemption Number: 1 no more than a 0.15-cfs
increase
On-site BMPS:
Conveyance System Spill containment located at: N/A
Erosion and Sediment Control / CSWPP/CESCL/ESC Site Supervisor: TBD
Construction Stormwater Pollution Contact Phone: TBD
Prevention After Hours Phone: TBD
Maintenance and Operation Responsibility: Private / Public
If Private, Maintenance Log Required: Yes / No
Financial Guarantees and Provided: Yes / No
Liability
Water Quality Type: Basic / Sens Lake / Enhanced Basic / Bog
(include facility summary sheet) or exemption No. 1 Surface Area Exemption
Landscape Management Plan: Yes / No
Special Requirements (as applicable)
Area Specific Drainage Type: CDA / SDO / MDP / BP / LMP / Shared / None
Requirements Name:
Floodplain/Floodway Delineation Type: Major / Minor / Exemption / None
100-year Base Flood Elevation (or range):
Datum:
Flood Protection Facilities Describe: N/A
Source Control Describe Landuse: Residential
(comm. / industrial landuse) Describe any structural controls: N/A
Oil Control High-use Site: Yes / No
©2023 D. R. STRONG Consulting Engineers Inc. Page 9 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
Treatment BMP:
Maintenance Agreement: Yes / No
with whom?
Other Drainage Structures
Describe:
Part 13 EROSION AND SEDIMENT CONTROL REQUIREMENTS
MINIMUM ESC REQUIREMENTS
DURING CONSTRUCTION
Clearing Limits
Cover Measures
Perimeter Protection
Traffic Area Stabilization
Sediment Retention
Surface Water Collection
Dewatering Control
Dust control
Flow Control
Control Pollutants
Protect Existing and Proposed
BMPs/Facilities
Maintain Protective BMPs / Manage
Project
MINIMUM ESC REQUIREMENTS
AFTER CONSTRUCTION
Stabilize Exposed Surfaces
Remove and Restore Temporary ESC
Facilities
Clean and Remove All Silt and
Debris, Ensure Operations of
Permanent BMPs/Facilities, restore
operation of BMPs/Facilities as
necessary
Flag Limits of sensitive areas and open
space Preservation areas
Other
©2023 D. R. STRONG Consulting Engineers Inc. Page 10 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
Part 14 STORMWATER FACILITY DESCRIPTIONS (Note: Include Facility Summary and Sketch
Flow Control Type/Description Water Quality Type/Description
Detention
Infiltration
Regional
Facility
Shared Facility
On-site BMPs
Other
Basic Dispersion
Trenches
Vegetated
Flowpath
Wetpool
Filtration
Oil Control
Spill Control
On-site BMPs
Other
Part 15 EASEMENTS/TRACTS Part 16 STRUCTURAL ANALYSIS
Drainage Easement
Covenant
Native Growth Protection Covenant
Tract
Other:
Cast in Place Vault
Retaining Wall
Rockery > 4’ High
Structural on Steep Slope
Other:
Part 17 SIGNATURE OF PROFESSIONAL ENGINEER
I, or a civil engineer under my supervision, have visited the site. Actual site conditions as observed were incorporated into this worksheet and the attached Technical Information
Report. To the best of my knowledge the information provided here is accurate.
8/11/2023
Signed/Date
©2023 D. R. STRONG Consulting Engineers Inc. Page 11 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
FIGURE 2
VICINITY MAP
SITE
©2023 D. R. STRONG Consulting Engineers Inc. Page 12 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
FIGURE 3
DRAINAGE BASINS, SUBBASINS, AND SITE CHARACTERISTICS
0
GRAPHIC SCALE
302010
1 INCH = 20 FT.
©2023 D. R. STRONG Consulting Engineers Inc. Page 13 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
FIGURE 4
SOILS
©2023 D. R. STRONG Consulting Engineers Inc. Page 14 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
King County Area, Washington
InC – Indianola loamy sand, 5 to 15 percent slopes
Map Unit Setting
• National map unit symbol: 2t635
• Elevation: 0 to 980 feet
• Mean annual precipitation: 30 to 81 inches
• Mean annual air temperature: 48 to 50 degrees F
• Frost-free period: 170 to 210 days
• Farmland classification: Prime farmland if irrigated
Map Unit Composition
• Indianola and similar soils: 85 percent
• Minor components: 15 percent
• Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Indianola
Setting
• Landform: Eskers, kames, terraces
• Landform position (three-dimensional): Riser
• Down-slope shape: Linear
• Across-slope shape: Linear
• Parent material: Sandy glacial outwash
Typical profile
• Oi - 0 to 1 inches: slightly decomposed plant material
• A - 1 to 6 inches: loamy sand
• Bw1 - 6 to 17 inches: loamy sand
• Bw2 - 17 to 27 inches: sand
• BC - 27 to 37 inches: sand
• C - 37 to 60 inches: sand
Properties and qualities
• Slope: 5 to 15 percent
• Depth to restrictive feature: more than 80 inches
• Drainage class: Somewhat excessively drained
• Capacity of the most limiting layer to transmit water (Ksat): High to very high (5.95 to 99.90 in/hr)
• Depth to water table: More than 80 inches
• Frequency of flooding: None
• Frequency of ponding: None
• Available water supply, 0 to 60 inches: Low (about 3.9 inches)
Interpretive groups
• Land capability classification (irrigated): 4e
• Land capability classification (nonirrigated): 4s
• Hydrologic Soil Group: A
• Ecological site: F002XA004WA – Puget Lowlands Forest
• Forage suitability group; Droughty Soils (G002XN402WA), Droughty Soils (G002XS401WA)
• Other vegetative classification: Droughty Soils (G002XN402WA), Droughty Soils (G002XS401WA)
• Hydric soil rating: No
©2023 D. R. STRONG Consulting Engineers Inc. Page 15 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
Minor Components
Alderwood
• Percent of map unit: 8 percent
• Landform: Ridges, hills
• Landform position (two-dimensional): Shoulder
• Landform position (three-dimensional): Nose slope, talf
• Down-slope shape: Linear, convex
• Across-slope shape: Convex
• Hydric soil rating: No
Everett
• Percent of map unit: 5 percent
• Landform: Kames, eskers, moraines
• Landform position (two-dimensional): Shoulder, footslope
• Landform position (three-dimensional): Base slope, crest
• Down-slope shape: Convex
• Across-slope shape: Convex
• Hydric soil rating: No
Norma
• Percent of map unit: 2 percent
• Landform: Depressions, drainageways
• Landform position (three-dimensional): Dip
• Down-slope shape: Concave, linear
• Across-slope shape: Concave
• Hydric soil rating: Yes
©2023 D. R. STRONG Consulting Engineers Inc. Page 16 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
SECTION II
CONDITIONS AND REQUIREMENTS SUMMARY
The Project must comply with the following Core and Special Requirements:
• C.R. #1 – Discharge at the Natural Location : Existing drainage patterns discharge
from the Project Site towards N 33rd Place ultimately. The existing downstream
drainage patterns for the Site will be preserved .
• C.R. #2 – Offsite Analysis: Analysis is included in Section III. The Analysis
describes the Site’s runoff patterns in detail.
• C.R. #3 – Flow Control: The Project is located in a Peak Rate Flow Control
Standrad Area matching existing site conditions 2, 10 and 100-year peak rate runoff.
Per exemption 2 in Section 1.2.3.1.A., “Exceptions”, the facility requirement may be
“…waived for any threshold discharge area of a redevelopment project in which a)
the target surfaces subject to the Peak Rate Flow Control Standard Areas facility
requirement will generate no more than a 0.15 cfs increase (when modeled using
15-minute time steps) in the existing site conditions 100-year peak flow (modeled
using same time step unit (e.g. 15 -minute) used to calculate the developed flow). b)
The increase runoff from the target surfaces will not significantly impact a critical
area, severe flooding problem, or severe erosion pr oblem” This difference between
existing site and developed site conditions is less than the maximum 0.15 cfs using
15 minute time steps. Therefore, the project is exempt from flow control facility
requirements. The results of the WWHM modeling for the pred eveloped and
developed site conditions can be found in Section IV.
• C.R. #4 – Conveyance System: New pipe systems are required to be designed
with sufficient capacity to convey and contain (with minimum 6-inches of freeboard)
the 25-year peak flow, assuming developed conditions for onsite tributary areas and
existing conditions for any offsite tributary areas. Pipe system structures may
overtop for runoff events that exceed the 25 -year design capacity, provided the
overflow from a 100-year runoff event does not create or aggravate a “severe
flooding problem” or “severe erosion problem” as defined in C.R. #2. Any overflow
occurring onsite for runoff events up to and including the 100-year event must
discharge at the natural location for the project site. In residential subdivisions, such
overflow must be contained within an onsite drainage easement, tract, covenant or
public right-of-way. The propsoed conveyance system was analyzed using the
rational method, and is capable of conveying the 100-year peak storm without
overtopping any strucutres or channels.
• C.R. #5 – Erosion and Sediment Control: The Project will provide the thirteen
minimum ESC measures. A temporary erosion and sedimentation control plan been
included with this submittal.
• C.R. #6 – Maintenance and Operations: Maintenance of the proposed storm
drainage facilities will be the responsibility of the City. An Operation and
Maintenance Manual is included in Section X.
©2023 D. R. STRONG Consulting Engineers Inc. Page 17 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
• C.R. #7 – Financial Guarantees: Prior to commencing construction, the Applicant
must post a drainage facilities restoration and site stabilization financial guarantee.
For any constructed or modified drainage facilities to be maintained and operated by
the City, the Applicant must: 1) Post a dra inage defect and maintenance financial
guarantee for a period of two years, and 2) Maintain the drainage facilities during the
two-year period following posting of the drainage defect and maintenance financial
guarantee.
• C.R. #8 – Water Quality: Total pollution generating impervious surface (P.G.I.S.)
will be less than 5,000 s.f. and less than ¾ acre of new pollution generated pervious
surfaces (P.G.P.S.) will be added, therefore a formal water quality treatment facility
is not required per Section 1.2.8 of the Manual.
• C.R. #9 – Flow Control BMPs: The Site is considered a Small Lot since it is less
than 22,000 S.F. A BMP infeasibility criteria breakdown in the order specified by the
2022 Manual is as follows:
Flow Control BMP Evalutation:
o Full Dispersion: Full dispersion is not feasible on this Site due to lack of the
native vegetated path on the project Site.
o Full Infiltration: Per the Geotechnical Report, full infiltration is not feasible for
the project Site.
o Limited Infiltration: Per the Geotechnical Report, limited infiltration is not
feasible for the project Site.
o Bioretention: Per the Geotechnical Report, limited infiltration is not feasible for
the project Site.
o Permeable Pavement: Per the Geotechnical Report, limited infiltration is not
feasible for the project Site.
o Basic Dispersion: Basic dispersion is feasible and will be implemented to
mitigated at least 10% of impervious areas (roof areas) onsite.
o Reduced Impervious Surface Credit: The project meets the BMP requirment
with the selected BMPs above.
o Native Growth Retention Credit: The project meets the BMP requirment with
the selected BMPs above.
o Soil Amendment: it is proposed to be utilized for all distubed pervious areas
onsite.
o Perforated Pipe Connection: it is proposed to the maximum extent feasible
when connecting roof downspout to the local drianage system .
Final design of flow control BMPs will be provided at the time of the building permit
submittals. Runoff generated by the proposed residences on the original two parcels will
discharge to the existing conveyance system within N 33rd Place.
©2023 D. R. STRONG Consulting Engineers Inc. Page 18 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
• S.R. #1 – Other Adopted Area-Specific Requirements: Not applicable for this
Project.
• S.R. #2 – Flood hazard Area Delineation: Not applicable for this Project.
• S.R. #3 – Flood Protection Facilities: Not applicable for this Project.
• S.R. #4 – Source Controls: Not applicable for this Project since the Project does
not propose new or improved commercial, industrial, or multifamily development .
• S.R. #5 – Oil Control: Not applicable for this Project.
• S.R. #6 – Aquifer Protection Areas: The Site is located within Aquifer Protection
Zone 2. This means facilities that allow runoff to have direct contact with soil as well
as open channel conveyance systems may require a liner . The Project will meet this
requirement when proposing any drianage improvements to the Site.
©2023 D. R. STRONG Consulting Engineers Inc. Page 19 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
SECTION III
OFF-SITE ANALYSIS
LEVEL ONE DOWNSTREAM ANALYSIS
TASK 1: DEFINE AND MAP STUDY AREA
This Offsite Analysis was prepared in accordance with Core Requirement #2, Section
1.2.2 of the 2022 City of Renton Surface Water Design Manual (Manual). The Project
Site is located at 1008 N 33rd Place, Renton, Washington and has the Parcel number
334210-2460.
See Figures 5 through 12 for maps of the study area.
TASK 2: RESOURCE REVIEW
• Adopted Basin Plans: None are applicable to this Site.
• Finalized Drainage Studies: Alpine Nursery TIR, Cedar Highlands TIR, Saddlebrook
TIR.
• Basin Reconnaissance Summary Reports: Cedar River Current and Future
Conditions Report (April 1993).
• Comprehensive Plans: Renton’s Comprehensive Plan, adopted on June 22, 2015,
effective July 1, 2015.
• Floodplain/Floodway (FEMA) Map: No floodplains exist on site, See Figure 11.
• Other Offsite Analysis Reports: None
• Sensitive Areas Map Folios, City of Renton GIS: See Figures 6-10. The City’s GIS,
on Figure 8, shows the Site to be on a Zone 2 Wellhead Protection Area and on
Figure 9 shows the Site to be within 500 feet of moderate and high landslide hazard
area. The rest of the Figures does not show the Site be on or near a critical area.
• DNRP Drainage Complaints and Studies: Per King County Water and Land
Resources Division, there are two complaints within the downstream paths, within
approximately one mile from the Site within the last 10 years. See Figure 12.
• USDA King County Soils Survey: See Figure 4
• King County Wetlands Inventory: No wetlands were identified via King County
Wetland Inventory. See Figure 8.
• Migrating River Studies: None are applicable to this Site.
• King County Designated Water Quality Problems: Per the Washi ngton State Water
Quality Assessment 303(d)/305(b) Integrated Report current as of 2012, there are
no water quality problems within 1 mile downstream of the Site.
©2023 D. R. STRONG Consulting Engineers Inc. Page 20 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
FIGURE 5
CITY OF RENTON TOPOGRAPHY MAP
Site
©2023 D. R. STRONG Consulting Engineers Inc. Page 21 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
FIGURE 6
CITY OF RENTON COAL MINE HAZARD AREAS MAP
Site
©2023 D. R. STRONG Consulting Engineers Inc. Page 22 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
FIGURE 7
CITY OF RENTON FLOOD HAZARDS MAP
Site
©2023 D. R. STRONG Consulting Engineers Inc. Page 23 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
FIGURE 8
CITY OF RENTON STREAMS AND WETLANDS MAP
Site
©2023 D. R. STRONG Consulting Engineers Inc. Page 24 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
FIGURE 9
CITY OF RENTON LANDSLIDE HAZARDS MAP
Site
©2023 D. R. STRONG Consulting Engineers Inc. Page 25 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
FIGURE 10
CITY OF RENTON SEISMIC HAZARD AREAS MAP
Site
©2023 D. R. STRONG Consulting Engineers Inc. Page 26 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
FIGURE 11
FEMA MAP
Site
(Approximate)
©2023 D. R. STRONG Consulting Engineers Inc. Page 27 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
FIGURE 12
KING COUNTY IMAP DRAINAGE COMPLAINTS MAP
Location Complaint Year Description
A WQAI 2014
B WQAI 2014
C SKH 2019 Sinkhole on or near KC Parks’ property
TASK 3: FIELD INSPECTION
UPSTREAM TRIBUTARY AREA
There is approximatley 19,153 s.f. (0.440 acres) of upstream tributary area to the
project area coming from the adjacent parcels to the east . However, all this runoff sheet
flows over residential lawns which facilitate dispersion a nd eventually infiltration.
Nevertheless, minimal upstream runoff is expected to sheet flow onsite.
GENERAL ONSITE AND OFFSITE DRAINAGE DESCRIPTIONS
The entire Site has a moderate grade sloping to the southwest. The Site is contained
within one Threshold Discharge Area (TDA) that contains two Natural Discharge Areas
(NDAs). NDA 1 for the Site drains as sheet flow across the western and southern
property lines into adjacent properties to the west and N 33rd Place to the south.
Minimal runoff sheet flows from NDA 2 across the northern property line; however, it
converges back with the NDA 1 runoff within ¼ miles. Stormwater runoff from adjacent
properties to the west eventually drains toward N 33 rd Place to the south within ¼ mile
A
B
C Site
©2023 D. R. STRONG Consulting Engineers Inc. Page 28 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
as well. Runoff flows in a westerly direction through a series of catch basins and pipes
along N 33rd Place. The 12-inch storm main along N 33rd Pl connects to a Type 2 catch
basin along Burnett Ave N, its runoff flows on a 24-inch pipe in a northerly direction. On
Burnett Ave N and N 34th St, the storm main turns westward and connects through a
series of Type 2 catch basins and eventually connects to the main along Lake
Washington Blvd N, the runoff flows in a southerly direction for approximately 140 f eet
and turns west before reaching a Type 1 catch basin across Lake Washington Blvd N
and finally reaching its outfall on Lake Washington approximately ¼ mile from the Site.
TASK 4: DRAINAGE SYSTEM DESCRIPTION AND PROBLEM DESCRIPTIONS
DRAINAGE SYSTEM DESCRIPTION
The downstream analysis is further illustrated and detailed in the Dow nstream Map
Figure 13. The drainage area is located within the East Lake Washington – Renton
Drainage Basin. The drainage area was evaluated by reviewing available resources
described in Task 2, and by conducting a field reconnaissance on March 13, 2023
under rainy conditions.
DOWNSTREAM PATH
The runoff from the Site and its adjacent parcels sheet flows to N 33rd Pl and is
conveyed in a westerly direction through a series of catch basins and pipes along N 33rd
Pl. The 12-inch storm main along N 33rd Pl connects to a Type 2 catch basin along
Burnett Ave N, its runoff flows on a 24-inch pipe in a northerly direction. On Burnett Ave
N and N 34th St, the storm main turns westward and connects through a series of Type
2 catch basins and eventually connects to the main along Lake Washington Blvd N, the
runoff flows in a southerly direction for approximately 140 feet and turns west before
reaching a Type 1 catch basin across Lake Washington Blvd N and finally reaching its
outfall on Lake Washington approximately ¼ mile from the Site.
TASK 5: MITIGATION OF EXISTING OR POTENTIAL PROBLEMS
A review of the King County Water and Land Resources Division – Drainage Services
Section Documented Drainage Complaints within one mile of the downstream flow
paths revealed three complaints within the last ten years that have since been closed.
These complaints can be seen in Figure 12.
The project analyzed conveyance capacity downstream of the Site. It turned out that the
8” PVC the project is connecting to is substandard after the upstream area is fully
developed. This is classified as Conveya nce System Nuisance Problem (Type1) as
specified in Section 1.2.2.1.1 of the Manual. See Section V in this report for a
discussion on the required Drainage Problem Impact Mitigation that is subject to the
requirements of Section 1.2.2.2.
©2023 D. R. STRONG Consulting Engineers Inc. Page 29 Cedars at the Highlands
Level One Downstream Analysis Renton, Washington
FIGURE 13
OFFSITE ANALYSIS DOWNSTREAM MAP
Site
NDA 2
NDA 1
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Technical Information Report Renton, Washington
SECTION IV
FLOW CONTROL, LOW IMPACT DEVELOPMENT (LID) AND WATER QUALITY
FACILITY ANALYSIS AND DESIGN
EXISTING SITE HYDROLOGY
WWHM was used to model the peak runoff from the Site. Per Table 3.2.2.a of the
Manual the soil type is modeled as “Outwash” for the Indianola loamy sand SCS
classification as shown in Figure 4. Soils. The Site is modeled per existing conditions
and the area breakdown is shown below. Results of the WWHM analysis are included in
this section
Input:
Output:
©2023 D. R. STRONG Consulting Engineers Inc. Page 31 Kennydale Lots
Technical Information Report Renton, Washington
FIGURE 14
PREDEVELOPMENT AREA MAP
COPYRIGHT , D.R. STRONG CONSULTING ENGINEERS INC.cGRAPHIC SCALE01020401 INCH = 20 FT.
©2023 D. R. STRONG Consulting Engineers Inc. Page 32 Kennydale Lots
Technical Information Report Renton, Washington
DEVELOPED SITE AREA HYDROLOGY
WWHM was used to model the developed peak runoff from the Site. The soil types are
unchanged from the pre-developed conditions. Results of the WWHM analysis are
included in this section.
The impervious areas for the developed condition were calculated per the project site
zoning (65% of the lot area) with estimated driveway location and size. All pervious
areas were modeled as moderately sloped lawn.
Input:
Output:
©2023 D. R. STRONG Consulting Engineers Inc. Page 33 Kennydale Lots
Technical Information Report Renton, Washington
FIGURE 15
DEVELOPED AREA MAP
COPYRIGHT , D.R. STRONG CONSULTING ENGINEERS INC.cGRAPHIC SCALE01020401 INCH = 20 FT.
©2023 D. R. STRONG Consulting Engineers Inc. Page 34 Kennydale Lots
Technical Information Report Renton, Washington
PERFORMANCE STANDARDS
The project site is located within an Incorporated Area as designated by King County,
but will adhere to Peak Rate Flow Control Standard matching existing conditions 2, 10
and 100-year peak rate runoff according to the location of the site on the City of
Renton’s flow control application map. Per Section 1.2.3.1.A., “Exceptions” in the
Manual, the project is exempt from flow control facility requirements due to the fact that
the developed site conditions for the project Site will increase the 100 -year peak flow
from the predeveloped condition by less than 0.15 cfs using 15 -minute time steps.
The Project meets the Manual’s requirements for the surface area exemption from
water quality control. Per Section 1.2.8 of the Manual, the Project is exempt from
providing a water quality facility due to less than 5,000 s.f. of new plus replaced PGIS
being added and less than ¾ of an acre of new PGIS being added.
FLOW CONTROL SYSTEM
The Site is exempt from the Peak Rate Flow Control Standard. Per Section 1.2.3.1.A.,
“Exceptions”, the facility requirement may be “…waived for any threshold discharge
area of a redevelopment project in which a) the target surfaces subject to the Peak Rate
Flow Control Standard Areas facility requirement will generate no more than a 0.15 cfs
increase (when modeled using 15-minute time steps) in the existing site conditions 100 -
year peak flow (modeled using same time step unit (e.g. 15 -minute) used to calculate
the developed flow). b) The increase runoff from the ta rget surfaces will not significantly
impact a critical area, severe flooding problem, or severe erosion problem.”
WWHM was used to model both the predeveloped and developed conditions utilizing
15-minute time steps. The results in comparison can be seen below.
Modeling Results – Comparison:
As seen per the WWHM modeling, the difference in 100 -year peak flows is less than
0.15 cfs (0.1581 - 0.0984 = 0.0597 cfs). No BMP facility sizing credits were taken into
account for these models.
The Site will implement basic dispersion trenches to dipserse roof runoff for an area of
700 s.f. for each house roof. Thus, a 10 feet trench will be proposed on each parcel in
the back yards. Since the runoff is not generated from PGIS, a liner is not required to
meet the Aquifer Project Areas reqiurements for zone 2. However, it may be provided
anyway for the trench design purposes.
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Technical Information Report Renton, Washington
WATER QUALITY TREATMENT SYSTEM
Total new or replaced Pollution Generating Impervious Surface (PGIS) for the project
will be approximately 1,427 S.F. in the form of one new residential driveway and
frontage improvements of N 33rd Place along the southern property line. Per Section
1.2.8 of the Manual, the project is exempt from providing a water quality facility due to
the fact that less than 5,000 S.F. of new plus replaced PGIS is being added and less
than ¾ of an acre of new PGPS is being added.
©2023 D. R. STRONG Consulting Engineers Inc. Page 36 Kennydale Lots
Technical Information Report Renton, Washington
SECTION V
CONVEYANCE SYSTEM ANALYSIS AND DESIGN
Per Core Requirement #4 of the Manual, the conveyance system must be analyzed and
designed for the existing tributary and developed onsite runoff . Pipe systems shall be
designed to convey the 25-year storm with a minimum of 6-inches of freeboard between
the design water surface and structure grate. Pipe system structures may overtop for
runoff events that exceed the 25-year design capacity, provided the overflow from a
100-year runoff event does not create or aggravate a “severe flooding problem” or
“severe erosion problem” as defined in C.R. #2. The Rational Method was used to
calculate the Q100 for each pipe node.
A conveyance system consisting primarily of pipes and catch basins has been designed
for the Project. Runoff will be collected by the three catch basins. Proposed pipes are
12-inch diameter DI and PVC material while exsisting pipes are 8-inch diameter PVC
material. FlowMaster and Rational Method Calculations are included in this section.
There is approximately 850 feet of half street frontage (north 25 -feet of N 33rd Place) as
well as 13 parcel that would be collected and conveyed through the proposed
conveyance system. The total area is approximately 2.54 acres. Evan with assuming full
buildout of the upstream area, the 100-year flow would be 5.48 cfs. The 12-inch pipe
with a minimum slope of 2.5% would have a capacity of 6.12 cfs. The proposed
conveyance system has adequate capacity to convey the upstream bypass as well as
the proposed project improvements. (See Rational Method and FlowMaster results
below)
Upstream Road Area
Upstream Lot Area
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Technical Information Report Renton, Washington
Rational Method for Upstream Area Including Project Site
FlowMaster Results for 12-inch DI Pipe
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Technical Information Report Renton, Washington
FlowMaster Results for 8-inch PVC Pipe
However, when analyizing the 8-inch PVC pipe that the development is connecting to, it
appears that this existing system is substandard as the 8-inch pipe with a slope of
10.78% would have a capacity of only 4.76 cfs. This was mentioned in Section II o f this
report. This is classified as Conveyance System Nuisance Problem (Type1) as specified
in Section 1.2.2.1.1 of the Manual.
Since the Project Site is qualified for an exception from Core Requirement #3: Flow
Control, the Drainage Problem-Specific Mitigation Requirements have been met as
stated in Section 1.2.2.2 of the M anual. No additional actions is required from this
Project.
©2023 D. R. STRONG Consulting Engineers Inc. Page 39 Kennydale Lots
Technical Information Report Renton, Washington
SECTION VI
SPECIAL REPORTS AND STUDIES
The following report and studies have been provided with this submittal.
Geotechnical Evaluation: Earth Solutions NW LLC, Dated April 11, 2023
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Technical Information Report Renton, Washington
SECTION VII
OTHER PERMITS
None at this time.
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Technical Information Report Renton, Washington
SECTION VIII
CSWPPP ANALYSIS AND DESIGN (PART A)
The Erosion and Sedimentation Control Design will meet the 13 minimum King County
requirements:
1. Clearing Limits: Areas to remain undisturbed shall be delineated with a high
visibility plastic fence prior to any site clearing or grading.
2. Cover Measures: Site disturbed areas shall be covered with mulch and seeded, as
appropriate, for temporary or permanent measures.
3. Perimeter Protection: Silt fences will be provided downslope of all disturbed areas.
4. Traffic Area Stabilization: A stabilized construction entrance will be located at the
point of ingress/egress (i.e. onsite access road).
5. Sediment Retention: A sediment trap will act as a sediment pond for sediment
retention. However, since the site is relatively small, a sediment trap will not be
used.
6. Surface Water Collection: Normally, surface water from disturbed areas will sheet
flow to the temporary sediment trap , or be collected by interceptor swales and
conveyed to the sediment trap. However, since the site is relatively small, a
sediment trap will not be used.
7. Dewatering Control: Not applicable for this site.
8. Dust Control: Dust control shall be provided by spraying exposed soils with water
until wet. This is required when exposed soils are dry to the point that wind transport
is possible, which would impact roadways, drainage ways, surface waters, or
neighboring residences.
9. Flow Control: Runoff will discharge to the natural discharge location for the Site,
through a series of catch basins with inlet protection being installed.
10. Control Pollutants: All pollutants, including waste materials and demolitions debris
that occur on-site, shall be handled and disposed of in a manner that does not cause
contamination of stormwater. Woody debris may be chopped and spread on site.
Cover, containment, and protection from vandalism shall be provided for all
chemicals, liquid products, and non-inert wastes present on the Site (see chapter
173-304 WAS for the definition of inert waste). On -site fueling tanks shall include
secondary containment.
11. Protect Existing and Proposed Flow Control BMPs: All existing, temporary, and
permanent flow control BMPs shall be protected from disturbance during
construction. There are no existing BMPs to remain on site.
12. Maintain BMPs: All BMPs shall be inspected, maintained, and repaired as needed
to assure continued performance of their intended function. The SWPPP shall be
modified whenever there is a significant change in the design, construction,
operation, or maintenance at the construction site that has, or could have, a
significant effect on the discharge of pollutants to waters of the state
13. Manage the Project: The construction project is being phased to the maximum
extent practicable to prevent soil erosion, and to the maximum extent possible, the
transport of sediment from the site during construction. The SWPPP shall be
retained on-site at all times. Make any changes or additions necessary per the city
©2023 D. R. STRONG Consulting Engineers Inc. Page 42 Kennydale Lots
Technical Information Report Renton, Washington
inspector or CSWPP supervisor to ensure accordance with all 13 King County
requirements.
SWPPP PLAN DESIGN (PART B)
Construction activities that could contribute pollutants to surface and storm water
include the following, with applicable BMP’s listed for each item:
1. Storage and use of chemicals: Utilize source control, and soil erosion and
sedimentation control practices, such as using only recommended amounts of
chemical materials applied in the proper manner; neutralizing concrete wash water,
and disposing of excess concrete material only in a reas prepared for concrete
placement, or return to batch plant; disposing of wash -up waters from water-based
paints in sanitary sewer; disposing of wastes from oil-based paints, solvents,
thinners, and mineral spirits only through a licensed waste manageme nt firm, or
treatment, storage, and disposal (TSD) facility.
2. Material delivery and storage: Locate temporary storage areas away from
vehicular traffic, near the construction entrance, and away from storm drains.
Material Safety Data Sheets (MSDS) sho uld be supplied for all materials stored, and
chemicals kept in their original labeled containers. Maintenance, fueling, and repair
of heavy equipment and vehicles shall be conducted using spill prevention and
control measures. Contaminated surfaces shall be cleaned immediately following
any spill incident. Provide cover, containment, and protection from vandalism for all
chemicals, liquid products, petroleum products, and other potentially hazardous
materials.
3. Sawcutting: Slurry and cuttings shall be vacuumed during the activity to prevent
migration offsite and must not remain on permanent concrete or asphalt paving
overnight. Collected slurry and cuttings shall be disposed of in a manner that does
not violate ground water or surface water quality stan dards.
4. Demolition: Protect stormwater drainage system from sediment -laden runoff and
loose particles. To the extent possible, use dikes, berms, or other methods to
protect overland discharge paths from runoff. Street gutter, sidewalks, driveways,
and other paved surfaces in the immediate area of demolition must be swept daily to
collect and properly dispose of loose debris and garbage. Spray the minimum
amount of water to help control windblown fine particles such as concrete, dust, and
paint chips. Avoid excessive spraying so that runoff from the site does not occur, yet
dust control is achieved. Oils must never be used for dust control.
©2023 D. R. STRONG Consulting Engineers Inc. Page 43 Kennydale Lots
Technical Information Report Renton, Washington
SECTION IX
BOND QUANTITIES, FACILITY SUMMARIES, AND DECLARATION OF COVENANT
1. Bond Quantity Worksheet – is located in Appendix A
2. Facility Summary – No facilities proposed.
3. Declaration of Covenant – will be provided prior to final engineering approval.
©2023 D. R. STRONG Consulting Engineers Inc. Page 44 Kennydale Lots
Technical Information Report Renton, Washington
SECTION X
OPERATIONS AND MAINTENANCE MANUAL
Is incldued in this section.
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Technical Information Report Renton, Washington
APPENDICES
©2023 D. R. STRONG Consulting Engineers Inc. Page 46 Kennydale Lots
Technical Information Report Renton, Washington
APPENDIX “A” BOND QUANTITY WORKSHEET
1055 South Grady Way – 6 th Floor | Renton, WA 98057 (425) 430-7200
•
•
Section I: Project Information
•
•
•
Section II: Bond Quantities Worksheets
•
•Section II.a EROSION CONTROL (Stabilization/Erosion Sediment Control (ESC))
•Section II.b TRANSPORTATION (Street and Site Improvements)
•Section II.c DRAINAGE (Drainage and Stormwater Facilities):
•Section II.d WATER - ONLY APPLICABLE IF WATER SERVICE IS PROVIDED BY CITY OF RENTON
•Section II.e SANITARY SEWER - ONLY APPLICABLE IF SEWER SERVICE IS PROVIDED BY CITY OF RENTON
•
•
•
•
•
•
Section III. Bond Worksheet
•This section calculates the required Permit Bond for construction permit issuance as well as the required Maintenance Bond for project close-out
submittals to release the permit bond on a project.
All unit prices include labor, equipment, materials, overhead, profit, and taxes.
Complete the 'Quantity' columns for each of the appropriate section(s). Include existing Right-of-Way (ROW), Future Public Improvements and Private
Improvements.
The 'Quantity Remaining' column is only to be used when a project is under construction. The City allows one (1) bond reduction during the life of the
project with the exception of the maintenance period reduction.
Excel will auto-calculate and auto-populate the relevant fields and subtotals throughout the document. Only the 'Quantity' columns should need
completing.
Additional items not included in the lists can be added under the "write-in" sections. Provide a complete description, cost estimate and unit of measure
for each write-in item.
Note: Private improvements, with the exception of stormwater facilities, are not included in the bond amount calculation, but must be entered on the
form. Stormwater facilities (public and private) are required to be included in the bond amount.
BOND QUANTITY WORKSHEET INSTRUCTIONS
This worksheet is intended to be a "working" copy of the bond quantity worksheet, which will be used throughout all phases of the project, from initial
submittal to project close-out approval.
Submit this workbook, in its entirety, as follows:
The following forms are to be completed by the engineer/developer/applicant as applicable to the project:
The Bond Worksheet form will auto-calculate and auto-populate from the information provided in Section I and Section II.
This section includes all pertinent information for the project
Section II contains a separate spreadsheet TAB for each of the following specialties:
(1) electronic copy (.xlsx format) and (1) hard copy of the entire workbook for civil construction permit submittal. Hard copies are to be included as part
of the Technical Information Report (TIR).
(1) electronic copy (.xlsx format) and (1) hard copy of the entire workbook for final close-out submittal.
This section must be completed in its entirety
Information from this section auto-populates to all other relevant areas of the workbook
Page 1 of 15
Ref 8-H Bond Quantity Worksheet INSTRUCTIONS
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
1055 South Grady Way – 6 th Floor | Renton, WA 98057 (425) 430-7200
Date Prepared:
Name:
PE Registration No:
Firm Name:
Firm Address:
Phone No.
Email Address:
Project Name: Project Owner:
CED Plan # (LUA):Phone:
CED Permit # (C):Address:
Site Address:
Street Intersection:Addt'l Project Owner:
Parcel #(s):Phone:
Address:
Clearing and grading greater than or equal to 5,000 board feet of timber?
Yes/No:NO Water Service Provided by:
If Yes, Provide Forest Practice Permit #:Sewer Service Provided by:
SITE IMPROVEMENT BOND QUANTITY WORKSHEET
PROJECT INFORMATION
CITY OF RENTON
CITY OF RENTON
Engineer Stamp Required
(all cost estimates must have original wet stamp and signature)
Clearing and Grading Utility Providers
N/A
Project Location and Description Project Owner Information
Kennydale Lots
Mercer Island, WA 98040
3342102460
NW Seattle Builders, LLC
##-######253-405-5587
8/16/2023
Prepared by:
FOR APPROVALProject Phase 1
yoshio.piediscalzi@drstrong.com
Yoshio L. Piediscalzi
53232
DR STRONG Onculting Engineers
620 7th Avenue, Kirkland, WA 09033
(425) 827-3063
1008 N 33rd Place
9675 SE 36th Street, Ste 105
Approx. Burenett Ave N & N 33rd Place
C23002786
Abbreviated Legal
Description:
LOTS 41 AND 42, BLOCK 18, C.D.HILLMANS LAKE WASHINGTON
GARDEN OF EDEN ADDITION TO SEATTLE NO. 1, ACCORDING TO THE
PLAT THEREOF RECORDED IN VOLUME 11 OF PLATS, PAGE 63, IN
KING COUNTY, WASHINGTON.
Page 2 of 15
Ref 8-H Bond Quantity Worksheet SECTION I PROJECT INFORMATION
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
10.1%2 All prices include labor, equipment, materials, overhead, profit, and taxes. City of Renton Sales Tax is:
1 Select the current project status/phase from the following options:
For Approval - Preliminary Data Enclosed, pending approval from the City;
For Construction - Estimated Data Enclosed, Plans have been approved for contruction by the City;
Project Closeout - Final Costs and Quantities Enclosed for Project Close-out Submittal
7,861.14$
Total Estimated Construction Costs E
A + B + C + D 64,997.87$
Estimated Civil Construction Permit - Construction Costs2
Stormwater (Drainage)C 16,830.99$
As outlined in City Ordinance No. 4345, 50% of the plan review and inspection fees are to be paid at Permit Submittal. The balance is due at Permit Issuance.
Significant changes or additional review cycles (beyond 3 cycles) during the review process may result in adjustments to the final review fees.
Roadway (Erosion Control + Transportation)D 34,800.74$
Water A 5,505.00$
Wastewater (Sanitary Sewer)B
Page 3 of 15
Ref 8-H Bond Quantity Worksheet SECTION I PROJECT INFORMATION
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
CED Permit #:C23002786
Unit
Reference #Price Unit Quantity Cost
Backfill & compaction-embankment ESC-1 7.50$ CY
Check dams, 4" minus rock ESC-2 SWDM 5.4.6.3 90.00$ Each
Catch Basin Protection ESC-3 145.00$ Each 8 1,160.00
Crushed surfacing 1 1/4" minus ESC-4 WSDOT 9-03.9(3)110.00$ CY
Ditching ESC-5 10.50$ CY
Excavation-bulk ESC-6 2.30$ CY
Fence, silt ESC-7 SWDM 5.4.3.1 5.00$ LF
Fence, Temporary (NGPE)ESC-8 1.75$ LF 203 355.25
Geotextile Fabric ESC-9 3.00$ SY
Hay Bale Silt Trap ESC-10 0.60$ Each
Hydroseeding ESC-11 SWDM 5.4.2.4 0.90$ SY 1200 1,080.00
Interceptor Swale / Dike ESC-12 1.15$ LF
Jute Mesh ESC-13 SWDM 5.4.2.2 4.00$ SY
Level Spreader ESC-14 2.00$ LF
Mulch, by hand, straw, 3" deep ESC-15 SWDM 5.4.2.1 2.90$ SY
Mulch, by machine, straw, 2" deep ESC-16 SWDM 5.4.2.1 2.30$ SY
Piping, temporary, CPP, 6"ESC-17 13.75$ LF
Piping, temporary, CPP, 8"ESC-18 16.00$ LF
Piping, temporary, CPP, 12"ESC-19 20.50$ LF
Plastic covering, 6mm thick, sandbagged ESC-20 SWDM 5.4.2.3 4.60$ SY
Rip Rap, machine placed; slopes ESC-21 WSDOT 9-13.1(2)51.00$ CY
Rock Construction Entrance, 50'x15'x1'ESC-22 SWDM 5.4.4.1 2,050.00$ Each 1 2,050.00
Rock Construction Entrance, 100'x15'x1'ESC-23 SWDM 5.4.4.1 3,675.00$ Each
Sediment pond riser assembly ESC-24 SWDM 5.4.5.2 2,525.00$ Each
Sediment trap, 5' high berm ESC-25 SWDM 5.4.5.1 22.00$ LF
Sed. trap, 5' high, riprapped spillway berm section ESC-26 SWDM 5.4.5.1 80.00$ LF
Seeding, by hand ESC-27 SWDM 5.4.2.4 1.15$ SY
Sodding, 1" deep, level ground ESC-28 SWDM 5.4.2.5 9.20$ SY
Sodding, 1" deep, sloped ground ESC-29 SWDM 5.4.2.5 11.50$ SY
TESC Supervisor ESC-30 125.00$ HR
Water truck, dust control ESC-31 SWDM 5.4.7 160.00$ HR
Unit
Reference #Price Unit Quantity Cost
EROSION/SEDIMENT SUBTOTAL:4,645.25
SALES TAX @ 10.1%469.17
EROSION/SEDIMENT TOTAL:5,114.42
(A)
SITE IMPROVEMENT BOND QUANTITY WORKSHEET
FOR EROSION & SEDIMENT CONTROL
Description No.
(A)
WRITE-IN-ITEMS
Page 4 of 15
Ref 8-H Bond Quantity Worksheet SECTION II.a EROSION_CONTROL
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
CED Permit #:C23002786
Existing Future Public Private
Right-of-Way Improvements Improvements
(D) (E)
Description No. Unit Price Unit Quant.Cost Quant.Cost Quant.Cost Quant.Cost
GENERAL ITEMS
Backfill & Compaction- embankment GI-1 7.00$ CY
Backfill & Compaction- trench GI-2 10.25$ CY 35 358.75
Clear/Remove Brush, by hand (SY)GI-3 1.15$ SY
Bollards - fixed GI-4 275.00$ Each
Bollards - removable GI-5 520.00$ Each
Clearing/Grubbing/Tree Removal GI-6 11,475.00$ Acre 0.248 2,845.80
Excavation - bulk GI-7 2.30$ CY
Excavation - Trench GI-8 5.75$ CY 35 201.25
Fencing, cedar, 6' high GI-9 23.00$ LF
Fencing, chain link, 4'GI-10 44.00$ LF
Fencing, chain link, vinyl coated, 6' high GI-11 23.00$ LF
Fencing, chain link, gate, vinyl coated, 20' GI-12 1,600.00$ Each
Fill & compact - common barrow GI-13 28.75$ CY
Fill & compact - gravel base GI-14 31.00$ CY
Fill & compact - screened topsoil GI-15 44.75$ CY
Gabion, 12" deep, stone filled mesh GI-16 74.50$ SY
Gabion, 18" deep, stone filled mesh GI-17 103.25$ SY
Gabion, 36" deep, stone filled mesh GI-18 172.00$ SY
Grading, fine, by hand GI-19 2.90$ SY
Grading, fine, with grader GI-20 2.30$ SY
Monuments, 3' Long GI-21 1,025.00$ Each
Sensitive Areas Sign GI-22 8.00$ Each
Sodding, 1" deep, sloped ground GI-23 9.25$ SY
Surveying, line & grade GI-24 975.00$ Day
Surveying, lot location/lines GI-25 2,050.00$ Acre
Topsoil Type A (imported)GI-26 32.75$ CY
Traffic control crew ( 2 flaggers )GI-27 137.75$ HR 4 551.00
Trail, 4" chipped wood GI-28 9.15$ SY
Trail, 4" crushed cinder GI-29 10.25$ SY
Trail, 4" top course GI-30 13.75$ SY
Conduit, 2"GI-31 5.75$ LF
Wall, retaining, concrete GI-32 63.00$ SF
Wall, rockery GI-33 17.25$ SF
SUBTOTAL THIS PAGE:1,111.00 2,845.80
(B)(C)(D)(E)
SITE IMPROVEMENT BOND QUANTITY WORKSHEET
FOR STREET AND SITE IMPROVEMENTS
Quantity Remaining
(Bond Reduction)
(B)(C)
Page 5 of 15
Ref 8-H Bond Quantity Worksheet SECTION II.b TRANSPORTATION
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
CED Permit #:C23002786
Existing Future Public Private
Right-of-Way Improvements Improvements
(D) (E)
Description No. Unit Price Unit Quant.Cost Quant.Cost Quant.Cost Quant.Cost
SITE IMPROVEMENT BOND QUANTITY WORKSHEET
FOR STREET AND SITE IMPROVEMENTS
Quantity Remaining
(Bond Reduction)
(B)(C)
ROAD IMPROVEMENT/PAVEMENT/SURFACING
AC Grinding, 4' wide machine < 1000sy RI-1 34.50$ SY 179 6,175.50
AC Grinding, 4' wide machine 1000-2000sy RI-2 18.25$ SY
AC Grinding, 4' wide machine > 2000sy RI-3 11.50$ SY
AC Removal/Disposal RI-4 40.00$ SY 153 6,120.00
Barricade, Type III ( Permanent )RI-5 64.25$ LF
Guard Rail RI-6 34.50$ LF
Curb & Gutter, rolled RI-7 19.50$ LF
Curb & Gutter, vertical RI-8 14.25$ LF 96 1,368.00
Curb and Gutter, demolition and disposal RI-9 20.50$ LF
Curb, extruded asphalt RI-10 6.25$ LF
Curb, extruded concrete RI-11 8.00$ LF
Sawcut, asphalt, 3" depth RI-12 3.00$ LF 201 603.00
Sawcut, concrete, per 1" depth RI-13 5.00$ LF
Sealant, asphalt RI-14 2.25$ LF 42 94.50
Shoulder, gravel, 4" thick RI-15 17.25$ SY
Sidewalk, 4" thick RI-16 43.50$ SY 52 2,262.00
Sidewalk, 4" thick, demolition and disposal RI-17 37.00$ SY
Sidewalk, 5" thick RI-18 47.00$ SY
Sidewalk, 5" thick, demolition and disposal RI-19 46.00$ SY
Sign, Handicap RI-20 97.00$ Each
Striping, per stall RI-21 8.00$ Each
Striping, thermoplastic, ( for crosswalk )RI-22 3.50$ SF
Striping, 4" reflectorized line RI-23 0.55$ LF
Additional 2.5" Crushed Surfacing RI-24 4.15$ SY
HMA 1/2" Overlay 1.5" RI-25 16.00$ SY
HMA 1/2" Overlay 2"RI-26 20.75$ SY 180 3,735.00
HMA Road, 2", 4" rock, First 2500 SY RI-27 32.25$ SY
HMA Road, 2", 4" rock, Qty. over 2500SY RI-28 24.00$ SY
HMA Road, 4", 6" rock, First 2500 SY RI-29 51.75$ SY 39 2,018.25
HMA Road, 4", 6" rock, Qty. over 2500 SY RI-30 42.50$ SY
HMA Road, 4", 4.5" ATB RI-31 43.50$ SY
Gravel Road, 4" rock, First 2500 SY RI-32 17.25$ SY
Gravel Road, 4" rock, Qty. over 2500 SY RI-33 11.50$ SY
Thickened Edge RI-34 10.00$ LF 43 430.00
SUBTOTAL THIS PAGE:22,806.25
(B)(C)(D)(E)
Page 6 of 15
Ref 8-H Bond Quantity Worksheet SECTION II.b TRANSPORTATION
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
CED Permit #:C23002786
Existing Future Public Private
Right-of-Way Improvements Improvements
(D) (E)
Description No. Unit Price Unit Quant.Cost Quant.Cost Quant.Cost Quant.Cost
SITE IMPROVEMENT BOND QUANTITY WORKSHEET
FOR STREET AND SITE IMPROVEMENTS
Quantity Remaining
(Bond Reduction)
(B)(C)
PARKING LOT SURFACING No.
2" AC, 2" top course rock & 4" borrow PL-1 24.00$ SY
2" AC, 1.5" top course & 2.5" base course PL-2 32.00$ SY
4" select borrow PL-3 5.75$ SY
1.5" top course rock & 2.5" base course PL-4 16.00$ SY
SUBTOTAL PARKING LOT SURFACING:
(B)(C)(D)(E)
LANDSCAPING & VEGETATION No.
Street Trees LA-1 200.00$ 1 200.00
Median Landscaping LA-2
Right-of-Way Landscaping LA-3
Wetland Landscaping LA-4
SUBTOTAL LANDSCAPING & VEGETATION:200.00
(B)(C)(D)(E)
TRAFFIC & LIGHTING No.
Signs TR-1 200.00$
Street Light System ( # of Poles)TR-2 3,000.00$
Traffic Signal TR-3
Traffic Signal Modification TR-4
SUBTOTAL TRAFFIC & LIGHTING:
(B)(C)(D)(E)
WRITE-IN-ITEMS
SUBTOTAL WRITE-IN ITEMS:
STREET AND SITE IMPROVEMENTS SUBTOTAL:24,117.25 2,845.80
SALES TAX @ 10.1%2,435.84 287.43
STREET AND SITE IMPROVEMENTS TOTAL:26,553.09 3,133.23
(B)(C)(D)(E)
Page 7 of 15
Ref 8-H Bond Quantity Worksheet SECTION II.b TRANSPORTATION
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
CED Permit #:C23002786
Existing Future Public Private
Right-of-Way Improvements Improvements
(D) (E)
Description No. Unit Price Unit Quant.Cost Quant.Cost Quant.Cost Quant.Cost
DRAINAGE (CPE = Corrugated Polyethylene Pipe, N12 or Equivalent) For Culvert prices, Average of 4' cover was assumed. Assume perforated PVC is same price as solid pipe.)
Access Road, R/D D-1 30.00$ SY
* (CBs include frame and lid)
Beehive D-2 103.00$ Each
Through-curb Inlet Framework D-3 460.00$ Each
CB Type I D-4 1,725.00$ Each 3 5,175.00 2 3,450.00
CB Type IL D-5 2,000.00$ Each
CB Type II, 48" diameter D-6 3,500.00$ Each
for additional depth over 4' D-7 550.00$ FT
CB Type II, 54" diameter D-8 4,075.00$ Each
for additional depth over 4'D-9 570.00$ FT
CB Type II, 60" diameter D-10 4,225.00$ Each
for additional depth over 4'D-11 690.00$ FT
CB Type II, 72" diameter D-12 6,900.00$ Each
for additional depth over 4'D-13 975.00$ FT
CB Type II, 96" diameter D-14 16,000.00$ Each
for additional depth over 4'D-15 1,050.00$ FT
Trash Rack, 12"D-16 400.00$ Each
Trash Rack, 15"D-17 470.00$ Each
Trash Rack, 18"D-18 550.00$ Each
Trash Rack, 21"D-19 630.00$ Each
Cleanout, PVC, 4"D-20 170.00$ Each
Cleanout, PVC, 6"D-21 195.00$ Each 2 390.00
Cleanout, PVC, 8"D-22 230.00$ Each
Culvert, PVC, 4" D-23 11.50$ LF
Culvert, PVC, 6" D-24 15.00$ LF 76 1,140.00
Culvert, PVC, 8" D-25 17.00$ LF
Culvert, PVC, 12" D-26 26.00$ LF 95 2,470.00
Culvert, PVC, 15" D-27 40.00$ LF
Culvert, PVC, 18" D-28 47.00$ LF
Culvert, PVC, 24"D-29 65.00$ LF
Culvert, PVC, 30" D-30 90.00$ LF
Culvert, PVC, 36" D-31 150.00$ LF
Culvert, CMP, 8"D-32 22.00$ LF
Culvert, CMP, 12"D-33 33.00$ LF
SUBTOTAL THIS PAGE:7,645.00 4,980.00
(B)(C)(D)(E)
SITE IMPROVEMENT BOND QUANTITY WORKSHEET
FOR DRAINAGE AND STORMWATER FACILITIES
Quantity Remaining
(Bond Reduction)
(B)(C)
Page 8 of 15
Ref 8-H Bond Quantity Worksheet SECTION II.c DRAINAGE
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
CED Permit #:C23002786
Existing Future Public Private
Right-of-Way Improvements Improvements
(D) (E)
Description No. Unit Price Unit Quant.Cost Quant.Cost Quant.Cost Quant.Cost
SITE IMPROVEMENT BOND QUANTITY WORKSHEET
FOR DRAINAGE AND STORMWATER FACILITIES
Quantity Remaining
(Bond Reduction)
(B)(C)
DRAINAGE (Continued)
Culvert, CMP, 15"D-34 40.00$ LF
Culvert, CMP, 18"D-35 47.00$ LF
Culvert, CMP, 24"D-36 64.00$ LF
Culvert, CMP, 30"D-37 90.00$ LF
Culvert, CMP, 36"D-38 150.00$ LF
Culvert, CMP, 48"D-39 218.00$ LF
Culvert, CMP, 60"D-40 310.00$ LF
Culvert, CMP, 72"D-41 400.00$ LF
Culvert, Concrete, 8"D-42 48.00$ LF
Culvert, Concrete, 12"D-43 55.00$ LF
Culvert, Concrete, 15"D-44 89.00$ LF
Culvert, Concrete, 18"D-45 100.00$ LF
Culvert, Concrete, 24"D-46 120.00$ LF
Culvert, Concrete, 30"D-47 145.00$ LF
Culvert, Concrete, 36"D-48 175.00$ LF
Culvert, Concrete, 42"D-49 200.00$ LF
Culvert, Concrete, 48"D-50 235.00$ LF
Culvert, CPE Triple Wall, 6" D-51 16.00$ LF
Culvert, CPE Triple Wall, 8" D-52 18.00$ LF
Culvert, CPE Triple Wall, 12" D-53 27.00$ LF
Culvert, CPE Triple Wall, 15" D-54 40.00$ LF
Culvert, CPE Triple Wall, 18" D-55 47.00$ LF
Culvert, CPE Triple Wall, 24" D-56 64.00$ LF
Culvert, CPE Triple Wall, 30" D-57 90.00$ LF
Culvert, CPE Triple Wall, 36" D-58 149.00$ LF
Culvert, LCPE, 6"D-59 69.00$ LF
Culvert, LCPE, 8"D-60 83.00$ LF
Culvert, LCPE, 12"D-61 96.00$ LF
Culvert, LCPE, 15"D-62 110.00$ LF
Culvert, LCPE, 18"D-63 124.00$ LF
Culvert, LCPE, 24"D-64 138.00$ LF
Culvert, LCPE, 30"D-65 151.00$ LF
Culvert, LCPE, 36"D-66 165.00$ LF
Culvert, LCPE, 48"D-67 179.00$ LF
Culvert, LCPE, 54"D-68 193.00$ LF
SUBTOTAL THIS PAGE:
(B)(C)(D)(E)
Page 9 of 15
Ref 8-H Bond Quantity Worksheet SECTION II.c DRAINAGE
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
CED Permit #:C23002786
Existing Future Public Private
Right-of-Way Improvements Improvements
(D) (E)
Description No. Unit Price Unit Quant.Cost Quant.Cost Quant.Cost Quant.Cost
SITE IMPROVEMENT BOND QUANTITY WORKSHEET
FOR DRAINAGE AND STORMWATER FACILITIES
Quantity Remaining
(Bond Reduction)
(B)(C)
DRAINAGE (Continued)
Culvert, LCPE, 60"D-69 206.00$ LF
Culvert, LCPE, 72"D-70 220.00$ LF
Culvert, HDPE, 6"D-71 48.00$ LF
Culvert, HDPE, 8"D-72 60.00$ LF
Culvert, HDPE, 12"D-73 85.00$ LF
Culvert, HDPE, 15"D-74 122.00$ LF
Culvert, HDPE, 18"D-75 158.00$ LF
Culvert, HDPE, 24"D-76 254.00$ LF
Culvert, HDPE, 30"D-77 317.00$ LF
Culvert, HDPE, 36"D-78 380.00$ LF
Culvert, HDPE, 48"D-79 443.00$ LF
Culvert, HDPE, 54"D-80 506.00$ LF
Culvert, HDPE, 60"D-81 570.00$ LF
Culvert, HDPE, 72"D-82 632.00$ LF
Pipe, Polypropylene, 6"D-83 96.00$ LF
Pipe, Polypropylene, 8"D-84 100.00$ LF
Pipe, Polypropylene, 12"D-85 100.00$ LF
Pipe, Polypropylene, 15"D-86 103.00$ LF
Pipe, Polypropylene, 18"D-87 106.00$ LF
Pipe, Polypropylene, 24"D-88 119.00$ LF
Pipe, Polypropylene, 30"D-89 136.00$ LF
Pipe, Polypropylene, 36"D-90 185.00$ LF
Pipe, Polypropylene, 48"D-91 260.00$ LF
Pipe, Polypropylene, 54"D-92 381.00$ LF
Pipe, Polypropylene, 60"D-93 504.00$ LF
Pipe, Polypropylene, 72"D-94 625.00$ LF
Culvert, DI, 6"D-95 70.00$ LF
Culvert, DI, 8"D-96 101.00$ LF
Culvert, DI, 12"D-97 121.00$ LF 22 2,662.00
Culvert, DI, 15"D-98 148.00$ LF
Culvert, DI, 18"D-99 175.00$ LF
Culvert, DI, 24"D-100 200.00$ LF
Culvert, DI, 30"D-101 227.00$ LF
Culvert, DI, 36"D-102 252.00$ LF
Culvert, DI, 48"D-103 279.00$ LF
Culvert, DI, 54"D-104 305.00$ LF
Culvert, DI, 60"D-105 331.00$ LF
Culvert, DI, 72"D-106 357.00$ LF
SUBTOTAL THIS PAGE:2,662.00
(B)(C)(D)(E)
Page 10 of 15
Ref 8-H Bond Quantity Worksheet SECTION II.c DRAINAGE
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
CED Permit #:C23002786
Existing Future Public Private
Right-of-Way Improvements Improvements
(D) (E)
Description No. Unit Price Unit Quant.Cost Quant.Cost Quant.Cost Quant.Cost
SITE IMPROVEMENT BOND QUANTITY WORKSHEET
FOR DRAINAGE AND STORMWATER FACILITIES
Quantity Remaining
(Bond Reduction)
(B)(C)
Specialty Drainage Items
Ditching SD-1 10.90$ CY
Flow Dispersal Trench (1,436 base+)SD-3 32.00$ LF
French Drain (3' depth)SD-4 30.00$ LF
Geotextile, laid in trench, polypropylene SD-5 3.40$ SY
Mid-tank Access Riser, 48" dia, 6' deep SD-6 2,300.00$ Each
Pond Overflow Spillway SD-7 18.25$ SY
Restrictor/Oil Separator, 12"SD-8 1,320.00$ Each
Restrictor/Oil Separator, 15"SD-9 1,550.00$ Each
Restrictor/Oil Separator, 18"SD-10 1,950.00$ Each
Riprap, placed SD-11 48.20$ CY
Tank End Reducer (36" diameter)SD-12 1,375.00$ Each
Infiltration pond testing SD-13 143.00$ HR
Permeable Pavement SD-14
Permeable Concrete Sidewalk SD-15
Culvert, Box __ ft x __ ft SD-16
SUBTOTAL SPECIALTY DRAINAGE ITEMS:
(B)(C)(D)(E)
STORMWATER FACILITIES (Include Flow Control and Water Quality Facility Summary Sheet and Sketch)
Detention Pond SF-1 Each
Detention Tank SF-2 Each
Detention Vault SF-3 Each
Infiltration Pond SF-4 Each
Infiltration Tank SF-5 Each
Infiltration Vault SF-6 Each
Infiltration Trenches SF-7 Each
Basic Biofiltration Swale SF-8 Each
Wet Biofiltration Swale SF-9 Each
Wetpond SF-10 Each
Wetvault SF-11 Each
Sand Filter SF-12 Each
Sand Filter Vault SF-13 Each
Linear Sand Filter SF-14 Each
Proprietary Facility SF-15 Each
Bioretention Facility SF-16 Each
SUBTOTAL STORMWATER FACILITIES:
(B)(C)(D)(E)
Page 11 of 15
Ref 8-H Bond Quantity Worksheet SECTION II.c DRAINAGE
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
CED Permit #:C23002786
Existing Future Public Private
Right-of-Way Improvements Improvements
(D) (E)
Description No. Unit Price Unit Quant.Cost Quant.Cost Quant.Cost Quant.Cost
SITE IMPROVEMENT BOND QUANTITY WORKSHEET
FOR DRAINAGE AND STORMWATER FACILITIES
Quantity Remaining
(Bond Reduction)
(B)(C)
WRITE-IN-ITEMS (INCLUDE ON-SITE BMPs)
WI-1
WI-2
WI-3
WI-4
WI-5
WI-6
WI-7
WI-8
WI-9
WI-10
WI-11
WI-12
WI-13
WI-14
WI-15
SUBTOTAL WRITE-IN ITEMS:
DRAINAGE AND STORMWATER FACILITIES SUBTOTAL:10,307.00 4,980.00
SALES TAX @ 10.1%1,041.01 502.98
DRAINAGE AND STORMWATER FACILITIES TOTAL:11,348.01 5,482.98
(B)(C)(D)(E)
Page 12 of 15
Ref 8-H Bond Quantity Worksheet SECTION II.c DRAINAGE
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
CED Permit #:C23002786
Existing Future Public Private
Right-of-Way Improvements Improvements
(D) (E)
Description No. Unit Price Unit Quant.Cost Quant.Cost Quant.Cost Quant.Cost
Connection to Existing Watermain W-1 3,400.00$ Each
Ductile Iron Watermain, CL 52, 4 Inch Diameter W-2 58.00$ LF
Ductile Iron Watermain, CL 52, 6 Inch Diameter W-3 65.00$ LF
Ductile Iron Watermain, CL 52, 8 Inch Diameter W-4 75.00$ LF
Ductile Iron Watermain, CL 52, 10 Inch Diameter W-5 80.00$ LF
Ductile Iron Watermain, CL 52, 12 Inch Diameter W-6 145.00$ LF
Gate Valve, 4 inch Diameter W-7 1,225.00$ Each
Gate Valve, 6 inch Diameter W-8 1,350.00$ Each
Gate Valve, 8 Inch Diameter W-9 1,550.00$ Each
Gate Valve, 10 Inch Diameter W-10 2,100.00$ Each
Gate Valve, 12 Inch Diameter W-11 2,500.00$ Each
Fire Hydrant Assembly W-12 5,000.00$ Each 1 5,000.00
Permanent Blow-Off Assembly W-13 1,950.00$ Each
Air-Vac Assembly, 2-Inch Diameter W-14 3,050.00$ Each
Air-Vac Assembly, 1-Inch Diameter W-15 1,725.00$ Each
Compound Meter Assembly 3-inch Diameter W-16 9,200.00$ Each
Compound Meter Assembly 4-inch Diameter W-17 10,500.00$ Each
Compound Meter Assembly 6-inch Diameter W-18 11,500.00$ Each
Pressure Reducing Valve Station 8-inch to 10-inch W-19 23,000.00$ Each
WATER SUBTOTAL:5,000.00
SALES TAX @ 10.1%505.00
WATER TOTAL:5,505.00
(B)(C)(D)(E)
SITE IMPROVEMENT BOND QUANTITY WORKSHEET
FOR WATER
Quantity Remaining
(Bond Reduction)
(B)(C)
Page 13 of 15
Ref 8-H Bond Quantity Worksheet SECTION II.d WATER
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
CED Permit #:C23002786
Existing Future Public Private
Right-of-Way Improvements Improvements
(D) (E)
Description No. Unit Price Unit Quant.Cost Quant.Cost Quant.Cost Quant.Cost
Clean Outs SS-1 1,150.00$ Each 2 2,300.00
Grease Interceptor, 500 gallon SS-2 9,200.00$ Each
Grease Interceptor, 1000 gallon SS-3 11,500.00$ Each
Grease Interceptor, 1500 gallon SS-4 17,200.00$ Each
Side Sewer Pipe, PVC. 4 Inch Diameter SS-5 92.00$ LF
Side Sewer Pipe, PVC. 6 Inch Diameter SS-6 110.00$ LF 44 4,840.00
Sewer Pipe, PVC, 8 inch Diameter SS-7 120.00$ LF
Sewer Pipe, PVC, 12 Inch Diameter SS-8 144.00$ LF
Sewer Pipe, DI, 8 inch Diameter SS-9 130.00$ LF
Sewer Pipe, DI, 12 Inch Diameter SS-10 150.00$ LF
Manhole, 48 Inch Diameter SS-11 6,900.00$ Each
Manhole, 54 Inch Diameter SS-13 6,800.00$ Each
Manhole, 60 Inch Diameter SS-15 7,600.00$ Each
Manhole, 72 Inch Diameter SS-17 10,600.00$ Each
Manhole, 96 Inch Diameter SS-19 16,000.00$ Each
Pipe, C-900, 12 Inch Diameter SS-21 205.00$ LF
Outside Drop SS-24 1,700.00$ LS
Inside Drop SS-25 1,150.00$ LS
Sewer Pipe, PVC, ____ Inch Diameter SS-26
Lift Station (Entire System)SS-27 LS
SANITARY SEWER SUBTOTAL:7,140.00
SALES TAX @ 10.1%721.14
SANITARY SEWER TOTAL:7,861.14
(B)(C)(D)(E)
SITE IMPROVEMENT BOND QUANTITY WORKSHEET
FOR SANITARY SEWER
Quantity Remaining
(Bond Reduction)
(B)(C)
Page 14 of 15
Ref 8-H Bond Quantity Worksheet SECTION II.e SANITARY SEWER
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
1055 South Grady Way – 6 th Floor | Renton, WA 98057 (425) 430-7200
Date:
Name:Project Name:
PE Registration No:CED Plan # (LUA):
Firm Name:CED Permit # (C):
Firm Address:Site Address:
Phone No.Parcel #(s):
Email Address:Project Phase:
Site Restoration/Erosion Sediment Control Subtotal (a)
Existing Right-of-Way Improvements Subtotal (b)(b)32,058.09$
Future Public Improvements Subtotal (c)-$
Stormwater & Drainage Facilities (Public & Private) Subtotal (d)(d)16,830.99$
(e)
(f)
Site Restoration
Existing Right-of-Way and Storm Drainage Improvements
Maintenance Bond 9,777.82$
Bond Reduction 2
Construction Permit Bond Amount 3
Minimum Bond Amount is $10,000.00
1 Estimate Only - May involve multiple and variable components, which will be established on an individual basis by Development Engineering.
2 The City of Renton allows one request only for bond reduction prior to the maintenance period. Reduction of not more than 70% of the original bond amount, provided that the remaining 30% will
cover all remaining items to be constructed.
3 Required Bond Amounts are subject to review and modification by Development Engineering.
* Note: The word BOND as used in this document means any financial guarantee acceptable to the City of Renton.
** Note: All prices include labor, equipment, materials, overhead, profit, and taxes.
(425) 827-3063
yoshio.piediscalzi@drstrong.com
Kennydale Lots
##-######
1008 N 33rd Place
3342102460
FOR APPROVAL
C23002786
620 7th Avenue, Kirkland, WA 09033
70,032.55$
P
(a) x 100%
SITE IMPROVEMENT BOND QUANTITY WORKSHEET
BOND CALCULATIONS
8/16/2023
Yoshio L. Piediscalzi
53232
DR STRONG Onculting Engineers
R
((b x 150%) + (d x 100%))
S
(e) x 150% + (f) x 100%
Bond Reduction: Existing Right-of-Way Improvements (Quantity
Remaining)2
Bond Reduction: Stormwater & Drainage Facilities (Quantity
Remaining)2
T
(P +R - S)
Prepared by:Project Information
CONSTRUCTION BOND AMOUNT */**
(prior to permit issuance)
EST1
((b) + (c) + (d)) x 20%
-$
MAINTENANCE BOND */**
(after final acceptance of construction)
5,114.42$
32,058.09$
64,918.13$
5,114.42$
-$
16,830.99$
-$
Page 15 of 15
Ref 8-H Bond Quantity Worksheet SECTION III. BOND WORKSHEET
Unit Prices Updated: 01/07/2022
Version: 01/07/2022
Printed 8/16/2023
©2023 D. R. STRONG Consulting Engineers Inc. Page 47 Kennydale Lots
Technical Information Report Renton, Washington
APPENDIX “B” WWHM REPORT
WWHM2012
PROJECT REPORT
Flow Control Exemption 3/27/2023 2:42:53 PM Page 2
General Model Information
WWHM2012 Project Name:Flow Control Exemption
Site Name:Kennydale Lots
Site Address:1008 N 33rd Pl
City:Renton, WA
Report Date:3/27/2023
Gage:Seatac
Data Start:1948/10/01
Data End:2009/09/30
Timestep:15 Minute
Precip Scale:1.000
Version Date:2023/01/27
Version:4.2.19
POC Thresholds
Low Flow Threshold for POC1:50 Percent of the 2 Year
High Flow Threshold for POC1:50 Year
Flow Control Exemption 3/27/2023 2:42:53 PM Page 3
Landuse Basin Data
Predeveloped Land Use
Predev
Bypass:No
GroundWater:No
Pervious Land Use acre
A B, Lawn, Mod 0.197
Pervious Total 0.197
Impervious Land Use acre
ROADS MOD 0.032
ROOF TOPS FLAT 0.055
Impervious Total 0.087
Basin Total 0.284
Flow Control Exemption 3/27/2023 2:42:53 PM Page 4
Mitigated Land Use
Dev
Bypass:No
GroundWater:No
Pervious Land Use acre
A B, Lawn, Mod 0.098
Pervious Total 0.098
Impervious Land Use acre
ROADS MOD 0.033
ROOF TOPS FLAT 0.144
SIDEWALKS MOD 0.009
Impervious Total 0.186
Basin Total 0.284
Flow Control Exemption 3/27/2023 2:42:53 PM Page 5
Routing Elements
Predeveloped Routing
Flow Control Exemption 3/27/2023 2:42:53 PM Page 6
Mitigated Routing
Flow Control Exemption 3/27/2023 2:42:53 PM Page 7
Analysis Results
POC 1
+ Predeveloped x Mitigated
Predeveloped Landuse Totals for POC #1
Total Pervious Area:0.197
Total Impervious Area:0.087
Mitigated Landuse Totals for POC #1
Total Pervious Area:0.098
Total Impervious Area:0.186
Flow Frequency Method:Log Pearson Type III 17B
Flow Frequency Return Periods for Predeveloped. POC #1
Return Period Flow(cfs)
2 year 0.036658
5 year 0.049694
10 year 0.059635
25 year 0.073781
50 year 0.085535
100 year 0.098392
Flow Frequency Return Periods for Mitigated. POC #1
Return Period Flow(cfs)
2 year 0.073799
5 year 0.094335
10 year 0.108706
25 year 0.127787
50 year 0.142695
100 year 0.158217
Annual Peaks
Annual Peaks for Predeveloped and Mitigated. POC #1
Year Predeveloped Mitigated
1949 0.046 0.095
1950 0.058 0.101
1951 0.036 0.062
1952 0.024 0.051
1953 0.027 0.057
1954 0.032 0.061
1955 0.033 0.068
1956 0.033 0.065
1957 0.035 0.074
1958 0.029 0.061
Flow Control Exemption 3/27/2023 2:43:24 PM Page 8
1959 0.031 0.063
1960 0.033 0.062
1961 0.030 0.062
1962 0.026 0.055
1963 0.032 0.064
1964 0.030 0.062
1965 0.038 0.077
1966 0.025 0.051
1967 0.057 0.089
1968 0.051 0.105
1969 0.033 0.069
1970 0.033 0.068
1971 0.039 0.082
1972 0.054 0.089
1973 0.025 0.052
1974 0.036 0.075
1975 0.040 0.085
1976 0.029 0.059
1977 0.030 0.062
1978 0.039 0.080
1979 0.051 0.106
1980 0.048 0.096
1981 0.036 0.075
1982 0.050 0.106
1983 0.041 0.087
1984 0.026 0.054
1985 0.035 0.074
1986 0.031 0.065
1987 0.048 0.101
1988 0.029 0.061
1989 0.041 0.083
1990 0.106 0.150
1991 0.064 0.111
1992 0.025 0.054
1993 0.026 0.051
1994 0.026 0.053
1995 0.032 0.067
1996 0.056 0.082
1997 0.039 0.072
1998 0.034 0.071
1999 0.072 0.146
2000 0.034 0.072
2001 0.039 0.081
2002 0.042 0.090
2003 0.039 0.077
2004 0.067 0.138
2005 0.029 0.061
2006 0.031 0.057
2007 0.108 0.141
2008 0.063 0.105
2009 0.047 0.096
Ranked Annual Peaks
Ranked Annual Peaks for Predeveloped and Mitigated. POC #1
Rank Predeveloped Mitigated
1 0.1084 0.1501
2 0.1056 0.1463
3 0.0718 0.1409
Flow Control Exemption 3/27/2023 2:43:24 PM Page 9
4 0.0666 0.1383
5 0.0639 0.1113
6 0.0633 0.1065
7 0.0581 0.1057
8 0.0568 0.1052
9 0.0559 0.1049
10 0.0535 0.1015
11 0.0510 0.1006
12 0.0509 0.0960
13 0.0504 0.0960
14 0.0479 0.0954
15 0.0476 0.0901
16 0.0467 0.0893
17 0.0465 0.0886
18 0.0422 0.0871
19 0.0414 0.0846
20 0.0413 0.0833
21 0.0401 0.0818
22 0.0393 0.0817
23 0.0392 0.0812
24 0.0392 0.0800
25 0.0391 0.0770
26 0.0391 0.0769
27 0.0377 0.0752
28 0.0359 0.0749
29 0.0355 0.0742
30 0.0355 0.0740
31 0.0350 0.0722
32 0.0348 0.0717
33 0.0342 0.0707
34 0.0336 0.0694
35 0.0330 0.0685
36 0.0329 0.0682
37 0.0329 0.0671
38 0.0327 0.0650
39 0.0325 0.0650
40 0.0318 0.0636
41 0.0317 0.0633
42 0.0315 0.0624
43 0.0313 0.0623
44 0.0306 0.0622
45 0.0306 0.0620
46 0.0302 0.0619
47 0.0298 0.0614
48 0.0296 0.0609
49 0.0292 0.0608
50 0.0290 0.0606
51 0.0289 0.0589
52 0.0286 0.0572
53 0.0274 0.0571
54 0.0263 0.0555
55 0.0263 0.0541
56 0.0257 0.0538
57 0.0256 0.0530
58 0.0254 0.0517
59 0.0249 0.0514
60 0.0246 0.0511
61 0.0240 0.0507
Flow Control Exemption 3/27/2023 2:43:24 PM Page 10
Flow Control Exemption 3/27/2023 2:43:24 PM Page 11
Duration Flows
The Duration Matching Failed
Flow(cfs)Predev Mit Percentage Pass/Fail
0.0183 1469 12536 853 Fail
0.0190 1298 11524 887 Fail
0.0197 1144 10617 928 Fail
0.0204 1014 9811 967 Fail
0.0210 910 9009 989 Fail
0.0217 803 8346 1039 Fail
0.0224 706 7636 1081 Fail
0.0231 644 7020 1090 Fail
0.0238 571 6502 1138 Fail
0.0244 516 6053 1173 Fail
0.0251 470 5604 1192 Fail
0.0258 433 5204 1201 Fail
0.0265 410 4834 1179 Fail
0.0272 382 4494 1176 Fail
0.0278 349 4162 1192 Fail
0.0285 318 3852 1211 Fail
0.0292 289 3585 1240 Fail
0.0299 264 3373 1277 Fail
0.0305 247 3142 1272 Fail
0.0312 223 2939 1317 Fail
0.0319 198 2753 1390 Fail
0.0326 178 2558 1437 Fail
0.0333 163 2381 1460 Fail
0.0339 149 2237 1501 Fail
0.0346 138 2073 1502 Fail
0.0353 131 1942 1482 Fail
0.0360 119 1823 1531 Fail
0.0367 116 1711 1475 Fail
0.0373 107 1612 1506 Fail
0.0380 99 1499 1514 Fail
0.0387 95 1402 1475 Fail
0.0394 85 1313 1544 Fail
0.0401 81 1234 1523 Fail
0.0407 75 1162 1549 Fail
0.0414 72 1095 1520 Fail
0.0421 66 1032 1563 Fail
0.0428 62 964 1554 Fail
0.0434 55 902 1640 Fail
0.0441 52 851 1636 Fail
0.0448 50 814 1628 Fail
0.0455 47 774 1646 Fail
0.0462 47 728 1548 Fail
0.0468 39 679 1741 Fail
0.0475 38 647 1702 Fail
0.0482 33 620 1878 Fail
0.0489 32 590 1843 Fail
0.0496 31 557 1796 Fail
0.0502 31 524 1690 Fail
0.0509 28 493 1760 Fail
0.0516 27 466 1725 Fail
0.0523 27 447 1655 Fail
0.0530 26 425 1634 Fail
0.0536 22 405 1840 Fail
0.0543 22 389 1768 Fail
Flow Control Exemption 3/27/2023 2:43:24 PM Page 12
0.0550 21 380 1809 Fail
0.0557 21 365 1738 Fail
0.0563 20 354 1770 Fail
0.0570 17 337 1982 Fail
0.0577 16 319 1993 Fail
0.0584 14 307 2192 Fail
0.0591 14 285 2035 Fail
0.0597 13 269 2069 Fail
0.0604 13 261 2007 Fail
0.0611 13 246 1892 Fail
0.0618 13 236 1815 Fail
0.0625 12 222 1850 Fail
0.0631 11 208 1890 Fail
0.0638 10 198 1979 Fail
0.0645 8 192 2400 Fail
0.0652 8 183 2287 Fail
0.0658 7 177 2528 Fail
0.0665 7 169 2414 Fail
0.0672 6 163 2716 Fail
0.0679 6 159 2650 Fail
0.0686 6 153 2550 Fail
0.0692 6 144 2400 Fail
0.0699 6 139 2316 Fail
0.0706 5 137 2740 Fail
0.0713 5 130 2600 Fail
0.0720 4 127 3175 Fail
0.0726 4 123 3075 Fail
0.0733 4 119 2975 Fail
0.0740 4 113 2825 Fail
0.0747 4 107 2675 Fail
0.0754 4 100 2500 Fail
0.0760 4 99 2475 Fail
0.0767 4 96 2400 Fail
0.0774 4 92 2300 Fail
0.0781 4 89 2225 Fail
0.0787 4 85 2125 Fail
0.0794 4 84 2100 Fail
0.0801 4 80 2000 Fail
0.0808 4 78 1950 Fail
0.0815 4 72 1800 Fail
0.0821 3 69 2300 Fail
0.0828 3 67 2233 Fail
0.0835 3 64 2133 Fail
0.0842 3 63 2100 Fail
0.0849 3 61 2033 Fail
0.0855 3 59 1966 Fail
The development has an increase in flow durations
from 1/2 Predeveloped 2 year flow to the 2 year flow
or more than a 10% increase from the 2 year to the 50
year flow.
The development has an increase in flow durations for
more than 50% of the flows for the range of the
duration analysis.
Flow Control Exemption 3/27/2023 2:43:24 PM Page 13
Water Quality
Water Quality BMP Flow and Volume for POC #1
On-line facility volume:0 acre-feet
On-line facility target flow:0 cfs.
Adjusted for 15 min:0 cfs.
Off-line facility target flow:0 cfs.
Adjusted for 15 min:0 cfs.
Flow Control Exemption 3/27/2023 2:43:24 PM Page 14
LID Report
Flow Control Exemption 3/27/2023 2:43:45 PM Page 15
Model Default Modifications
Total of 0 changes have been made.
PERLND Changes
No PERLND changes have been made.
IMPLND Changes
No IMPLND changes have been made.
Flow Control Exemption 3/27/2023 2:43:45 PM Page 16
Appendix
Predeveloped Schematic
Flow Control Exemption 3/27/2023 2:43:46 PM Page 17
Mitigated Schematic
Flow Control Exemption 3/27/2023 2:43:47 PM Page 18
Predeveloped UCI File
RUN
GLOBAL
WWHM4 model simulation
START 1948 10 01 END 2009 09 30
RUN INTERP OUTPUT LEVEL 3 0
RESUME 0 RUN 1 UNIT SYSTEM 1
END GLOBAL
FILES
<File> <Un#> <-----------File Name------------------------------>***
<-ID-> ***
WDM 26 Flow Control Exemption.wdm
MESSU 25 PreFlow Control Exemption.MES
27 PreFlow Control Exemption.L61
28 PreFlow Control Exemption.L62
30 POCFlow Control Exemption1.dat
END FILES
OPN SEQUENCE
INGRP INDELT 00:15
PERLND 8
IMPLND 2
IMPLND 4
COPY 501
DISPLY 1
END INGRP
END OPN SEQUENCE
DISPLY
DISPLY-INFO1
# - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND
1 Predev MAX 1 2 30 9
END DISPLY-INFO1
END DISPLY
COPY
TIMESERIES
# - # NPT NMN ***
1 1 1
501 1 1
END TIMESERIES
END COPY
GENER
OPCODE
# # OPCD ***
END OPCODE
PARM
# # K ***
END PARM
END GENER
PERLND
GEN-INFO
<PLS ><-------Name------->NBLKS Unit-systems Printer ***
# - # User t-series Engl Metr ***
in out ***
8 A/B, Lawn, Mod 1 1 1 1 27 0
END GEN-INFO
*** Section PWATER***
ACTIVITY
<PLS > ************* Active Sections *****************************
# - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ***
8 0 0 1 0 0 0 0 0 0 0 0 0
END ACTIVITY
PRINT-INFO
<PLS > ***************** Print-flags ***************************** PIVL PYR
# - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *********
8 0 0 4 0 0 0 0 0 0 0 0 0 1 9
Flow Control Exemption 3/27/2023 2:43:47 PM Page 19
END PRINT-INFO
PWAT-PARM1
<PLS > PWATER variable monthly parameter value flags ***
# - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT ***
8 0 0 0 0 0 0 0 0 0 0 0
END PWAT-PARM1
PWAT-PARM2
<PLS > PWATER input info: Part 2 ***
# - # ***FOREST LZSN INFILT LSUR SLSUR KVARY AGWRC
8 0 5 0.8 400 0.1 0.3 0.996
END PWAT-PARM2
PWAT-PARM3
<PLS > PWATER input info: Part 3 ***
# - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP
8 0 0 2 2 0 0 0
END PWAT-PARM3
PWAT-PARM4
<PLS > PWATER input info: Part 4 ***
# - # CEPSC UZSN NSUR INTFW IRC LZETP ***
8 0.1 0.5 0.25 0 0.7 0.25
END PWAT-PARM4
PWAT-STATE1
<PLS > *** Initial conditions at start of simulation
ran from 1990 to end of 1992 (pat 1-11-95) RUN 21 ***
# - # *** CEPS SURS UZS IFWS LZS AGWS GWVS
8 0 0 0 0 3 1 0
END PWAT-STATE1
END PERLND
IMPLND
GEN-INFO
<PLS ><-------Name-------> Unit-systems Printer ***
# - # User t-series Engl Metr ***
in out ***
2 ROADS/MOD 1 1 1 27 0
4 ROOF TOPS/FLAT 1 1 1 27 0
END GEN-INFO
*** Section IWATER***
ACTIVITY
<PLS > ************* Active Sections *****************************
# - # ATMP SNOW IWAT SLD IWG IQAL ***
2 0 0 1 0 0 0
4 0 0 1 0 0 0
END ACTIVITY
PRINT-INFO
<ILS > ******** Print-flags ******** PIVL PYR
# - # ATMP SNOW IWAT SLD IWG IQAL *********
2 0 0 4 0 0 4 1 9
4 0 0 4 0 0 0 1 9
END PRINT-INFO
IWAT-PARM1
<PLS > IWATER variable monthly parameter value flags ***
# - # CSNO RTOP VRS VNN RTLI ***
2 0 0 0 0 0
4 0 0 0 0 0
END IWAT-PARM1
IWAT-PARM2
<PLS > IWATER input info: Part 2 ***
# - # *** LSUR SLSUR NSUR RETSC
2 400 0.05 0.1 0.08
4 400 0.01 0.1 0.1
Flow Control Exemption 3/27/2023 2:43:47 PM Page 20
END IWAT-PARM2
IWAT-PARM3
<PLS > IWATER input info: Part 3 ***
# - # ***PETMAX PETMIN
2 0 0
4 0 0
END IWAT-PARM3
IWAT-STATE1
<PLS > *** Initial conditions at start of simulation
# - # *** RETS SURS
2 0 0
4 0 0
END IWAT-STATE1
END IMPLND
SCHEMATIC
<-Source-> <--Area--> <-Target-> MBLK ***
<Name> # <-factor-> <Name> # Tbl# ***
Predev***
PERLND 8 0.197 COPY 501 12
PERLND 8 0.197 COPY 501 13
IMPLND 2 0.032 COPY 501 15
IMPLND 4 0.055 COPY 501 15
******Routing******
END SCHEMATIC
NETWORK
<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***
<Name> # <Name> # #<-factor->strg <Name> # # <Name> # # ***
COPY 501 OUTPUT MEAN 1 1 48.4 DISPLY 1 INPUT TIMSER 1
<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***
<Name> # <Name> # #<-factor->strg <Name> # # <Name> # # ***
END NETWORK
RCHRES
GEN-INFO
RCHRES Name Nexits Unit Systems Printer ***
# - #<------------------><---> User T-series Engl Metr LKFG ***
in out ***
END GEN-INFO
*** Section RCHRES***
ACTIVITY
<PLS > ************* Active Sections *****************************
# - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG ***
END ACTIVITY
PRINT-INFO
<PLS > ***************** Print-flags ******************* PIVL PYR
# - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR *********
END PRINT-INFO
HYDR-PARM1
RCHRES Flags for each HYDR Section ***
# - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each
FG FG FG FG possible exit *** possible exit possible exit
* * * * * * * * * * * * * * ***
END HYDR-PARM1
HYDR-PARM2
# - # FTABNO LEN DELTH STCOR KS DB50 ***
<------><--------><--------><--------><--------><--------><--------> ***
END HYDR-PARM2
Flow Control Exemption 3/27/2023 2:43:47 PM Page 21
HYDR-INIT
RCHRES Initial conditions for each HYDR section ***
# - # *** VOL Initial value of COLIND Initial value of OUTDGT
*** ac-ft for each possible exit for each possible exit
<------><--------> <---><---><---><---><---> *** <---><---><---><---><--->
END HYDR-INIT
END RCHRES
SPEC-ACTIONS
END SPEC-ACTIONS
FTABLES
END FTABLES
EXT SOURCES
<-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***
<Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # ***
WDM 2 PREC ENGL 1 PERLND 1 999 EXTNL PREC
WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC
WDM 1 EVAP ENGL 0.76 PERLND 1 999 EXTNL PETINP
WDM 1 EVAP ENGL 0.76 IMPLND 1 999 EXTNL PETINP
END EXT SOURCES
EXT TARGETS
<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd ***
<Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg***
COPY 501 OUTPUT MEAN 1 1 48.4 WDM 501 FLOW ENGL REPL
END EXT TARGETS
MASS-LINK
<Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->***
<Name> <Name> # #<-factor-> <Name> <Name> # #***
MASS-LINK 12
PERLND PWATER SURO 0.083333 COPY INPUT MEAN
END MASS-LINK 12
MASS-LINK 13
PERLND PWATER IFWO 0.083333 COPY INPUT MEAN
END MASS-LINK 13
MASS-LINK 15
IMPLND IWATER SURO 0.083333 COPY INPUT MEAN
END MASS-LINK 15
END MASS-LINK
END RUN
Flow Control Exemption 3/27/2023 2:43:47 PM Page 22
Mitigated UCI File
RUN
GLOBAL
WWHM4 model simulation
START 1948 10 01 END 2009 09 30
RUN INTERP OUTPUT LEVEL 3 0
RESUME 0 RUN 1 UNIT SYSTEM 1
END GLOBAL
FILES
<File> <Un#> <-----------File Name------------------------------>***
<-ID-> ***
WDM 26 Flow Control Exemption.wdm
MESSU 25 MitFlow Control Exemption.MES
27 MitFlow Control Exemption.L61
28 MitFlow Control Exemption.L62
30 POCFlow Control Exemption1.dat
END FILES
OPN SEQUENCE
INGRP INDELT 00:15
PERLND 8
IMPLND 2
IMPLND 4
IMPLND 9
COPY 501
DISPLY 1
END INGRP
END OPN SEQUENCE
DISPLY
DISPLY-INFO1
# - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND
1 Dev MAX 1 2 30 9
END DISPLY-INFO1
END DISPLY
COPY
TIMESERIES
# - # NPT NMN ***
1 1 1
501 1 1
END TIMESERIES
END COPY
GENER
OPCODE
# # OPCD ***
END OPCODE
PARM
# # K ***
END PARM
END GENER
PERLND
GEN-INFO
<PLS ><-------Name------->NBLKS Unit-systems Printer ***
# - # User t-series Engl Metr ***
in out ***
8 A/B, Lawn, Mod 1 1 1 1 27 0
END GEN-INFO
*** Section PWATER***
ACTIVITY
<PLS > ************* Active Sections *****************************
# - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ***
8 0 0 1 0 0 0 0 0 0 0 0 0
END ACTIVITY
PRINT-INFO
<PLS > ***************** Print-flags ***************************** PIVL PYR
# - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *********
Flow Control Exemption 3/27/2023 2:43:47 PM Page 23
8 0 0 4 0 0 0 0 0 0 0 0 0 1 9
END PRINT-INFO
PWAT-PARM1
<PLS > PWATER variable monthly parameter value flags ***
# - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT ***
8 0 0 0 0 0 0 0 0 0 0 0
END PWAT-PARM1
PWAT-PARM2
<PLS > PWATER input info: Part 2 ***
# - # ***FOREST LZSN INFILT LSUR SLSUR KVARY AGWRC
8 0 5 0.8 400 0.1 0.3 0.996
END PWAT-PARM2
PWAT-PARM3
<PLS > PWATER input info: Part 3 ***
# - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP
8 0 0 2 2 0 0 0
END PWAT-PARM3
PWAT-PARM4
<PLS > PWATER input info: Part 4 ***
# - # CEPSC UZSN NSUR INTFW IRC LZETP ***
8 0.1 0.5 0.25 0 0.7 0.25
END PWAT-PARM4
PWAT-STATE1
<PLS > *** Initial conditions at start of simulation
ran from 1990 to end of 1992 (pat 1-11-95) RUN 21 ***
# - # *** CEPS SURS UZS IFWS LZS AGWS GWVS
8 0 0 0 0 3 1 0
END PWAT-STATE1
END PERLND
IMPLND
GEN-INFO
<PLS ><-------Name-------> Unit-systems Printer ***
# - # User t-series Engl Metr ***
in out ***
2 ROADS/MOD 1 1 1 27 0
4 ROOF TOPS/FLAT 1 1 1 27 0
9 SIDEWALKS/MOD 1 1 1 27 0
END GEN-INFO
*** Section IWATER***
ACTIVITY
<PLS > ************* Active Sections *****************************
# - # ATMP SNOW IWAT SLD IWG IQAL ***
2 0 0 1 0 0 0
4 0 0 1 0 0 0
9 0 0 1 0 0 0
END ACTIVITY
PRINT-INFO
<ILS > ******** Print-flags ******** PIVL PYR
# - # ATMP SNOW IWAT SLD IWG IQAL *********
2 0 0 4 0 0 4 1 9
4 0 0 4 0 0 0 1 9
9 0 0 4 0 0 0 1 9
END PRINT-INFO
IWAT-PARM1
<PLS > IWATER variable monthly parameter value flags ***
# - # CSNO RTOP VRS VNN RTLI ***
2 0 0 0 0 0
4 0 0 0 0 0
9 0 0 0 0 0
END IWAT-PARM1
Flow Control Exemption 3/27/2023 2:43:47 PM Page 24
IWAT-PARM2
<PLS > IWATER input info: Part 2 ***
# - # *** LSUR SLSUR NSUR RETSC
2 400 0.05 0.1 0.08
4 400 0.01 0.1 0.1
9 400 0.05 0.1 0.08
END IWAT-PARM2
IWAT-PARM3
<PLS > IWATER input info: Part 3 ***
# - # ***PETMAX PETMIN
2 0 0
4 0 0
9 0 0
END IWAT-PARM3
IWAT-STATE1
<PLS > *** Initial conditions at start of simulation
# - # *** RETS SURS
2 0 0
4 0 0
9 0 0
END IWAT-STATE1
END IMPLND
SCHEMATIC
<-Source-> <--Area--> <-Target-> MBLK ***
<Name> # <-factor-> <Name> # Tbl# ***
Dev***
PERLND 8 0.098 COPY 501 12
PERLND 8 0.098 COPY 501 13
IMPLND 2 0.033 COPY 501 15
IMPLND 4 0.144 COPY 501 15
IMPLND 9 0.009 COPY 501 15
******Routing******
END SCHEMATIC
NETWORK
<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***
<Name> # <Name> # #<-factor->strg <Name> # # <Name> # # ***
COPY 501 OUTPUT MEAN 1 1 48.4 DISPLY 1 INPUT TIMSER 1
<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***
<Name> # <Name> # #<-factor->strg <Name> # # <Name> # # ***
END NETWORK
RCHRES
GEN-INFO
RCHRES Name Nexits Unit Systems Printer ***
# - #<------------------><---> User T-series Engl Metr LKFG ***
in out ***
END GEN-INFO
*** Section RCHRES***
ACTIVITY
<PLS > ************* Active Sections *****************************
# - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG ***
END ACTIVITY
PRINT-INFO
<PLS > ***************** Print-flags ******************* PIVL PYR
# - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR *********
END PRINT-INFO
HYDR-PARM1
RCHRES Flags for each HYDR Section ***
Flow Control Exemption 3/27/2023 2:43:47 PM Page 25
# - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each
FG FG FG FG possible exit *** possible exit possible exit
* * * * * * * * * * * * * * ***
END HYDR-PARM1
HYDR-PARM2
# - # FTABNO LEN DELTH STCOR KS DB50 ***
<------><--------><--------><--------><--------><--------><--------> ***
END HYDR-PARM2
HYDR-INIT
RCHRES Initial conditions for each HYDR section ***
# - # *** VOL Initial value of COLIND Initial value of OUTDGT
*** ac-ft for each possible exit for each possible exit
<------><--------> <---><---><---><---><---> *** <---><---><---><---><--->
END HYDR-INIT
END RCHRES
SPEC-ACTIONS
END SPEC-ACTIONS
FTABLES
END FTABLES
EXT SOURCES
<-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> ***
<Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # ***
WDM 2 PREC ENGL 1 PERLND 1 999 EXTNL PREC
WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC
WDM 1 EVAP ENGL 0.76 PERLND 1 999 EXTNL PETINP
WDM 1 EVAP ENGL 0.76 IMPLND 1 999 EXTNL PETINP
END EXT SOURCES
EXT TARGETS
<-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd ***
<Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg***
COPY 1 OUTPUT MEAN 1 1 48.4 WDM 701 FLOW ENGL REPL
COPY 501 OUTPUT MEAN 1 1 48.4 WDM 801 FLOW ENGL REPL
END EXT TARGETS
MASS-LINK
<Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->***
<Name> <Name> # #<-factor-> <Name> <Name> # #***
MASS-LINK 12
PERLND PWATER SURO 0.083333 COPY INPUT MEAN
END MASS-LINK 12
MASS-LINK 13
PERLND PWATER IFWO 0.083333 COPY INPUT MEAN
END MASS-LINK 13
MASS-LINK 15
IMPLND IWATER SURO 0.083333 COPY INPUT MEAN
END MASS-LINK 15
END MASS-LINK
END RUN
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Predeveloped HSPF Message File
Flow Control Exemption 3/27/2023 2:43:47 PM Page 27
Mitigated HSPF Message File
Flow Control Exemption 3/27/2023 2:43:47 PM Page 28
Disclaimer
Legal Notice
This program and accompanying documentation are provided 'as-is' without warranty of any kind. The
entire risk regarding the performance and results of this program is assumed by End User. Clear
Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either
expressed or implied, including but not limited to implied warranties of program and accompanying
documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever
(including without limitation to damages for loss of business profits, loss of business information,
business interruption, and the like) arising out of the use of, or inability to use this program even
if Clear Creek Solutions Inc. or their authorized representatives have been advised of the
possibility of such damages. Software Copyright © by : Clear Creek Solutions, Inc. 2005-2023; All
Rights Reserved.
Clear Creek Solutions, Inc.
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Olympia, WA. 98501
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