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Technical Information Report (TIR)
Renton Senior Housing
RJ Development
Preliminary
January 2018
SCJ Alliance January 2017
Technical Information Report
Project Information
Project: Renton Senior Housing
Prepared for: RJ Development
Reviewing Agency
Jurisdiction: City of Renton
Project Representative
Prepared by: SCJ Alliance
8730 Tallon Lane NE, Suite 200
Lacey, WA 98516
360.352.1465
scjalliance.com
Contact: Whitney Holm, PE
Project Reference: SCJ #2386.03
Path: N:\Projects\2386 RJ Development\2386.03 Renton Senior
Housing\Phase Number\Design\Storm\Technical Information Report.docx
Renton Senior Housing Technical Information Report
SCJ Alliance January 2017
Page i
TABLE OF CONTENTS
1. Project Overview ........................................................................................................ 2
1.1 Project Overview ................................................................................................................... 2
1.2 Predeveloped Site Conditions ............................................................................................... 3
1.3 Soils ........................................................................................................................................ 3
2. Conditions and Requirements Summary ..................................................................... 3
3. Offsite Analysis .......................................................................................................... 5
3.1 Downstream Analysis ............................................................................................................ 5
3.2 Upstream Analysis ................................................................................................................. 6
3.3 Resource Review ................................................................................................................... 6
3.4 Field investigation ................................................................................................................. 6
3.5 Drainage System Description and Problem Descriptions ...................................................... 6
4. Flow Control, Low Impact Development (LID) and Water Quality Facility Analysis and
Design ................................................................................................................................ 6
4.1 Existing Site Hydrology .......................................................................................................... 6
4.2 Developed Site Hydrology ..................................................................................................... 6
4.3 Performance Standards ......................................................................................................... 7
4.4 On-Site BMPs ......................................................................................................................... 7
4.5 Flow Control System .............................................................................................................. 7
4.6 Water Quality System ............................................................................................................ 8
5. Conveyance System Analysis and Design ..................................................................... 8
6. Special Reports and Studies ........................................................................................ 8
7. Other Permits ............................................................................................................. 8
8. CSWPP Analysis and Design ........................................................................................ 8
8.1 ESC Plan Analysis and Design ................................................................................................ 8
8.2 SWPPS Plan Design .............................................................................................................. 10
9. Bond Quantities, Facility Summaries, and Declaration of Covenant ........................... 10
10. Operations and Maintenance Manual ....................................................................... 10
Renton Senior Housing Technical Information Report
SCJ Alliance January 2017
Page ii
LIST OF APPENDICES
Appendix A: Vicinity Map
Appendix B: Stormwater Basin Exhibits and Maps
Appendix C: TIR Worksheet and Report Flow Chart
Appendix D: Calculations
Appendix E: Stormwater Plans
Appendix F: Geotechnical Report
Appendix G: Construction Stormwater Pollution Prevention Plan
Appendix H: Operations and Maintenance Manual
Appendix I: Declaration of Covenant
Renton Senior Housing 2 of 10 Technical Information Report
1. PROJECT OVERVIEW
The following report was prepared for the proposed Senior Housing Facility and parking lot in Renton. This report
was prepared to comply with the minimum technical standards and requirements that are set forth in the 2016
City of Renton Surface Water Design Manual (Manual).
1.1 PROJECT OVERVIEW
Project Proponent: RJ Development, LLC
Parcel Numbers: 312305-9067, 312305-9094
Total Parcel Area:4.75 acres
Current Zoning:Commercial
Required Permits:Utility, building, grading, paving, etc.
Site Address: (Unknown) xxx Talbot Road SE
The proposed Renton Senior Housing Facility site is located on two parcels adding up to 4.75 acres. The
project is located east of the intersection between Talbot Road South and South 45th Place in Renton,
Washington. The site is bordered to the north and south by existing commercial and residential
development, to the east by undeveloped land, and to the west by Talbot Road South. A site vicinity
map of the proposed project location is enclosed herein as Appendix A. The proposed construction
includes the Senior Housing Facility building and pool house as well as the associated parking, utilities,
frontage improvements, and stormwater improvements, disturbing approximately 3.55 acres.
Specifically, the proposed site improvements/construction activities for this project include the
following:
Site preparation, grading, and erosion control activities
Construction of Senior Housing Facility and associated parking
Construction/installation of on-site water quality and flow control facilities
Extension of available utilities (i.e., water, sewer, etc.)
Table 1 describes the land use of the proposed drainage basin. See the Existing and Proposed Drainage
Basin Exhibits in Appendix B.
Renton Senior Housing 3 of 10 Technical Information Report
Table 1: On-site Land Type Designations Summary Section
LAND TYPE DESIGNATIONS AREA (ACRES)% OF TOTAL AREA
Total Site Area 4.75 100
Existing Pervious Surface 4.75 100
Existing Impervious Surface 0 0
Drainage Basin Areas 4.75 100
Proposed Pervious Surface 0.89 18.7
Undisturbed Pervious 1.20 25.3
Proposed Pavement Surface 1.22 25.7
Proposed Roof Surface 0.99 20.8
Proposed Sidewalk Surface 0.45 9.5
A TIR worksheet is included in Appendix C.
1.2 PREDEVELOPED SITE CONDITIONS
The site is heavily forested. A single-family residence once occupied a small portion of the site area but
appears to have been demolished and removed from the property. The existing access road, however,
still remains. Topography generally ascends gently to the east. The eastern site area maintains a general
gradient of 30 percent while the central and western site area maintains a flatter gradient, on the order
of approximately 10 percent. There are no current drainage flow control facilities on the site.
1.3 SOILS
According to the Geotechnical Study completed by Earth Solutions NW LLC (ESNW) in August 2017, the
soils on-site contain topsoil in the upper 12 to 18 inches and the native soil below consists of silty sand.
A geologic map that is referenced in the study identifies Ground Moraine Deposits across the site and
surrounding areas. Groundwater seepage was identified in a few test pits two feet below existing grade
when they were dug in November 2017. It is believed groundwater is likely to be encountered during
construction activities. They also determined, in general, the native soil they encountered is not suitable
for infiltration.
2. CONDITIONS AND REQUIREMENTS SUMMARY
A Full Drainage Review is required for the project, according to the Flow Chart for Determining Type of
Drainage Review Required. The flow chart is attached in Appendix C. According to the Manual, a project
that requires a Full Drainage Review is also required to address all nine core requirements and all six
special requirements.
Renton Senior Housing 4 of 10 Technical Information Report
Summary of Compliance On-Site
The stormwater design complies with all nine core requirements and all six special requirements as
follows:
Core Requirement #1 – Discharge at the Natural Location – On-site generated stormwater runoff will be
detained and released to the City’s stormwater conveyance system. Currently, the runoff either
infiltrates on-site or sheet flows to the City’s stormwater system along Talbot Road.
Core Requirement #2 – Offsite Analysis – A Level 1 upstream and downstream analysis has been
completed and can be found in Section 3 of this Report.
Core Requirement #3 – Flow Control – A stormwater detention vault will be constructed as a part of this
project. On-site stormwater will be released at the predeveloped flow rates.
Core Requirement #4 – Conveyance System – The on-site stormwater conveyance system will be
designed to route the 25-year peak flow event.
Core Requirement #5 – Erosion and Sediment Control – A Construction Stormwater Pollution Prevention
(CSWPP) Plan has been completed and can be found in Section 8.
Core Requirement #6 – Maintenance and Operations – An Operation and Maintenance Manual can be
found in Section 10 of the Report. The owner is aware they are responsible for operating and
maintaining the stormwater system on-site.
Core Requirement #7 – Financial Guarantees and Liability – The owner will maintain liability insurance
and post with the City of Renton a bond, assignment of funds, or certified check.
Core Requirement #8 – Water Quality – A Modular Wetland System will be used to fulfill the enhance
treatment requirement.
Core Requirement #9 – On-site BMPs – BMPs will be used where feasible. Due to steep slopes and
minimal to no infiltration, many of the BMPs are not feasible. See Section 4.4 of this report for further
discussion.
Special Requirement #1 – Other Adopted Area-Specific Requirements – No additional requirements are
known at this time.
Special Requirement #2 – Flood Hazard Area Delineation – The proposed project is not located in or
adjacent to a flood hazard area. See the FEMA flood map attached in Appendix B. This Special
Requirement is not applicable.
Special Requirement #3 – Flood Protection Facilities – The proposed project does not rely on an existing
flood protection facility. This Special Requirement is not applicable.
Special Requirement #4 – Source Control – Water quality source controls will be installed in accordance
with the King County Stormwater Pollution Prevent Manual.
Renton Senior Housing 5 of 10 Technical Information Report
Special Requirement #5 – Oil Control – The project is not considered a high-use site; therefore, oil
control is not required.
Special Requirement #6 – Aquifer Protection Area – The project is not located in an Aquifer Protection
Area. See the Groundwater Protection Areas Map in Appendix B.
3. OFFSITE ANALYSIS
3.1 DOWNSTREAM ANALYSIS
A Level 1 Analysis was completed for this project. Stormwater from the project site will be detained
and released at the predeveloped rate to an existing stormwater system on Talbot Road. The existing
system conveys the water to the northwest into Panther Creek. The existing system conveys the water
down Talbot Road, west on South 43rd Street, through the Valley Medical Center Complex, and then is
discharged into Panther Creek. The map below shows the downstream path and the location where it
is discharged. Panther Creek is considered the natural discharge location and adverse effects are not
anticipated. No improvements to the conveyance system in Talbot Road are anticipated. Offsite
drainage courses will not be altered. Stormwater will be released at its predeveloped rates at the
natural discharge location. Consequently, downstream impacts are not anticipated. Additional site
maps with contours can be found in Appendix E.
Figure 1: Downstream Analysis
Renton Senior Housing 6 of 10 Technical Information Report
3.2 UPSTREAM ANALYSIS
There is no foreseen offsite run-on from the adjacent roadway or parcels that will be tributary to the
proposed stormwater system.
3.3 RESOURCE REVIEW
Flood Hazard Zone
The flood hazard areas within this portion of Renton, Washington, are delineated on the Federal
Emergency Mapping Agency (FEMA) National Flood Insurance Program – Flood Insurance Rate Map
(FIRM) No 53033C0979F, revised May 16, 1995. The project site does not lie in a Flood Zone. See
Appendix B for a copy of the FEMA map.
Critical Areas
According to City of Renton’s GIS site, there are critical areas on the eastern portion of the site. There is
high erosion hazard, steep slopes, landslide potential, and regulated slopes. The critical areas located on
the project parcels will remain undeveloped.
The closest wetland to the site is upstream about 700 feet away.
3.4 FIELD INVESTIGATION
An in-depth Inspection will be completed prior to the final submittal.
3.5 DRAINAGE SYSTEM DESCRIPTION AND PROBLEM DESCRIPTIONS
An Offsite Analysis Drainage System Table is attached in Appendix C.
4. FLOW CONTROL, LOW IMPACT DEVELOPMENT (LID) AND WATER
QUALITY FACILITY ANALYSIS AND DESIGN
4.1 EXISTING SITE HYDROLOGY
Currently, on-site generated stormwater that does not infiltrate directly in the soils flows offsite towards
Talbot Road. There are no current drainage flow control facilities on the site. The geotechnical report
classified the site soils as type C.
See attached Existing Drainage Basin Exhibit in Appendix B.
4.2 DEVELOPED SITE HYDROLOGY
The developed site hydrology was modeled using the areas in Table 1 of this report. Refer to Appendix E
for the stormwater plan sheets and the full proposed stormwater design.
Renton Senior Housing 7 of 10 Technical Information Report
4.3 PERFORMANCE STANDARDS
According to Section 1.2.3.1 in the Manual and the City of Renton Flow Control Application Map,
attached in Appendix B, the site must meet the Flow Control Duration Standard – Matching Forested
requirements. From Table 1.2.3.A the project must apply the Flow Control Duration Standard, which
matched the flow duration of predeveloped rates for forested site conditions over the range of flows
extending from 50% of two years up to the full 50-year flow and matches peaks for the two- and ten-
year return periods. See Section 4.4 of this section for the design of the flow control system.
According to Section 1.2.4.1 of the Manual, this project requires the new pipe systems to be able to
convey and contain the 25-year peak flows. See Section 5 for the conveyance system analysis.
The project is a commercial site and according to Section 1.2.8.1.A of the Manual enhanced treatment is
required. No additional source control or oil control is required. See part 4.5 of this section for the
design of the water quality system.
4.4 ON-SITE BMPS
Using Appendix C of the Manual, specific BMPs were determined feasible or infeasible for this project. A
geotechnical report was completed in August 2017. It was determined in the report that the site is not
suitable for infiltration. Groundwater seepage was also encountered in areas two feet below existing
ground.
Section C.1.3.2 of the Manual lays out Large Lot BMP Requirements. Full dispersion as well as full
infiltration of roof runoff are infeasible due to the inability to infiltrate on-site. Bioretention facilities and
permeable pavement were not used because of the high groundwater on the site.
BMP 2.13 Soil Amendment will be used on-site. All the areas that are being preserved will be protected
from compaction during construction. All additional requirements under section C.2.13.1 will also be
met.
4.5 FLOW CONTROL SYSTEM
One (1) on-site detention vault will be constructed as a part of the site improvements for this project. The
stormwater detention vault will be built using StormCapture units. The total area of units needed is
11,136 sf. Each module is 8 ft by 16 ft by 8 ft deep. The amount of storage is limited to 7 ft by 15 ft by 7
ft. The modules can be placed in any configuration. See the stormwater plans in Appendix E. The vault has
been designed to release stormwater off-site at the predeveloped flow rates of 50% of the two-year peak
flow up to the 50-year peak flow and matches peaks for the two- and ten-year return periods. (See
Appendix D for predeveloped and post developed flow rates). WWHM2012 was used to model the flow
control for the proposed stormwater system. WWHM is an approved continuous flow simulation method.
The vault will be constructed with a flow control structure, which will include a 1.2-inch orifice at the
bottom of the structure and a rectangular notch at six feet, which allows one foot of freeboard.
Renton Senior Housing 8 of 10 Technical Information Report
4.6 WATER QUALITY SYSTEM
A Modular Wetland System will be used to treat the roadway and parking runoff. Using WWHM, an off-
line flow of 0.12 cfs needs to be treated. The MWS-L-4-13 can treat up to 0.144 cfs. The modular
wetland has an internal bypass structure, so no additional structure is required to be able to use the off-
line flow rate. The Modular Wetland is placed upstream of the underground vault. See the stormwater
plans in Appendix E.
5. CONVEYANCE SYSTEM ANALYSIS AND DESIGN
The total runoff for all of the pollution-generating impervious surfaces on site is 1.11 cfs during the 100-
year storm. The capacity of a 12-inch PVC pipe sloped at 0.5% is 3.27 cfs. Because the roof area does not
need to be treated, it will be collected through downspouts and discharged directly into the vault. See
Appendix E for design calculations.
6. SPECIAL REPORTS AND STUDIES
A geotechnical report was finalized by ESNW on August 3, 2017, and is enclosed herein as Appendix F. A
SEPA checklist will be submitted by the Applicant.
7. OTHER PERMITS
Utility, grading, and building permits may need to be secured prior to beginning construction activities.
Construction Stormwater General Permit (NPDES) from the Department of Ecology (DOE) is also
required.
8. CSWPP ANALYSIS AND DESIGN
8.1 ESC PLAN ANALYSIS AND DESIGN
The site was designed with the Erosion and Sediment Control Standards in mind. Each measure is
described below and how the project will address the issue.
1. Clearing Limits: Prior to site clearing or grading, areas to remain undisturbed during project
construction will be delineated on the project’s ESC plan and physically marked on the project site.
2. Cover Measures: Temporary and permanent cover measures shall be provided when necessary to
protect disturbed areas.
3. Perimeter Protection: Perimeter protection to filter sediment from sheet flow shall be provided
downstream of all disturbed areas prior to upslope grading.
Renton Senior Housing 9 of 10 Technical Information Report
4. Traffic Area Stabilization: Unsurfaced entrances, roads, and parking areas used by construction traffic
shall be stabilized to minimize erosion and tracking of sediment offsite.
5. Sediment Retention: Surface water collected from all disturbed areas of the site shall be routed
through a sediment pond or trap prior to release from the site, except those areas at the perimeter of
the site small enough to be treated solely with perimeter protection. Sediment retention facilities shall
be installed prior to grading any contributing area.
6. Surface Water Collection: Surface water collection measures (e.g., ditches, berms, etc.) shall be
installed to intercept all surface water from disturbed areas, convey it to a sediment pond or trap, and
discharge it downstream of any disturbed areas. Areas at the perimeter of the site, which are small
enough to be treated solely with perimeter protection, do not require surface water collection.
Significant sources of upstream surface water that drain onto disturbed areas shall be intercepted and
conveyed to a stabilized discharge point downstream of the disturbed areas. Surface water collection
measures shall be installed concurrently with or immediately following rough grading and shall be
designed, constructed, and stabilized as needed to minimize erosion.
7. Dewatering Control: The water resulting from construction site dewatering activities must be treated
prior to discharge or disposed of as specified.
8. Dust Control: Preventative measures to minimize wind transport of soil shall be implemented when a
traffic hazard may be created or when sediment transported by wind is likely to be deposited in water
resources.
9. Flow Control: Surface water from disturbed areas must be routed through the project’s onsite flow
control facility or other provisions must be made to prevent increases in the existing site conditions two-
year and ten-year runoff peaks discharging from the project site during construction (flow control
facility, runoff treatment facility, and on-site BMP areas [existing or proposed] shall not be used for this
purpose).
10. Control Pollutants: Stormwater pollution prevention (SWPPS) measures are required to prevent,
reduce, or eliminate the discharge of pollutants to onsite or adjacent stormwater systems or
watercourses from construction-related activities such as materials delivery and storage, on-site
equipment fueling and maintenance, demolition of existing buildings and disposition of demolition
materials and other waste, and concrete handling, washout and disposal. Section D.2.2 of the Manual
describes BMPs specific to this purpose; additionally, several of the ESC BMPs described herein are
applicable.
11. Protect Existing and Proposed Stormwater Facilities and On-site BMPs: Sedimentation and soil
compaction reduce the infiltration capacity of native and engineered soils. Protection measures shall be
applied/installed and maintained so as to prevent adverse impacts to existing stormwater facilities and
on-site BMPs and areas of proposed stormwater facilities and on-site BMPs for the project. Adverse
impacts can prompt the requirement to restore or replace affected stormwater facilities and on-site
BMPs.
12. Maintain Protective BMPs: Protection measures shall be maintained to ensure continued
performance of their intended function, to prevent adverse impacts to existing BMPs/facilities and areas
of proposed BMPs/facilities, and protect other disturbed areas of the project.
Renton Senior Housing 10 of 10 Technical Information Report
13. Manage the Project: Coordination and timing of site development activities relative to ESC concerns
and timely inspection, maintenance, and update of protective measures are necessary to effectively
manage the project and ensure the success of protective ESC and SWPPS design and implementation.
See Appendix D of the Manual for further discussion of Erosion and Sediment Control.
The steep slopes on site will remain undisturbed. Where retaining walls are constructed, footing drains
will be installed to help reduce erosion problems.
8.2 SWPPS PLAN DESIGN
A site-specific Construction Stormwater Pollution Prevention Plan is enclosed herein as Appendix G.
9. BOND QUANTITIES, FACILITY SUMMARIES, AND DECLARATION OF
COVENANT
A Bond Quantities Worksheet, facility summaries, and declaration of covenant(s) for privately
maintained flow control facilities is enclosed herein as Appendix H.
10. OPERATIONS AND MAINTENANCE MANUAL
A site-specific Operations and Maintenance Manual is enclosed herein as Appendix I.
APPENDIX A
DETERMINATION OF MINIMUM REQUIREMENTS
WORKSEETS
APPENDIX B
SITE VICINITY MAP
APPENDIX C
BASIN MAP EXHIBIT
TALBOT ROAD S.PROPOSED STORMWATER BASINEXISTING STORMWATER BASINSP-01W, HOLM2SCALE IN FEET03060SEC. 31, T23N., R5E., W.M.JOB NO:DRAWING FILE NO:DATE:DESIGNER:BYDATEREVISIONSDRAWN BY:SHEET TITLE:OFDRAWING NO:SHEET NO:PROJECT NAME:SEAL:APPROVED BY:RENTON SENIOR HOUSINGRENTON, WAK. MELVINR. JARVISNOVEMBER, 20172386.0328730 TALLON LANE NE, SUITE 200, LACEY, WA 98516P: 360-352-1465 F: 360-352-1509SCJALLIANCE.COMCALL BEFORE YOU DIGSITE INFORMATION
TALBOT ROAD S.TALBOT ROAD SECCCCCCCPROPOSED STORMWATER BASINPROPOSED STORMWATER BASINSP-01W, HOLM2SCALE IN FEET03060SEC. 31, T23N., R5E., W.M.JOB NO:DRAWING FILE NO:DATE:DESIGNER:BYDATEREVISIONSDRAWN BY:SHEET TITLE:OFDRAWING NO:SHEET NO:PROJECT NAME:SEAL:APPROVED BY:RENTON SENIOR HOUSINGRENTON, WAK. MELVINR. JARVISNOVEMBER, 20172386.0328730 TALLON LANE NE, SUITE 200, LACEY, WA 98516P: 360-352-1465 F: 360-352-1509SCJALLIANCE.COMCALL BEFORE YOU DIGSITE INFORMATION
APPENDIX D
OFF-SITE ANALYSIS
APPENDIX E
DESIGN CALCULATIONS & COMPUTATIONS
WWHM2012
PROJECT REPORT
Flow Control-Test 1/4/2018 8:39:45 AM Page 2
General Model Information
Project Name:Flow Control-Test
Site Name:Renton Senior Housing
Site Address:
City:
Report Date:1/4/2018
Gage:Seatac
Data Start:1948/10/01
Data End:2009/09/30
Timestep:15 Minute
Precip Scale:1.000
Version Date:2017/04/14
Version:4.2.13
POC Thresholds
Low Flow Threshold for POC1:50 Percent of the 2 Year
High Flow Threshold for POC1:50 Year
Flow Control-Test 1/4/2018 8:39:45 AM Page 3
Landuse Basin Data
Predeveloped Land Use
Basin 1
Bypass:No
GroundWater:No
Pervious Land Use acre
C, Forest, Mod 4.75
Pervious Total 4.75
Impervious Land Use acre
Impervious Total 0
Basin Total 4.75
Element Flows To:
Surface Interflow Groundwater
Flow Control-Test 1/4/2018 8:39:45 AM Page 4
Mitigated Land Use
Basin 1
Bypass:No
GroundWater:No
Pervious Land Use acre
C, Lawn, Mod 0.89
C, Forest, Steep 1.2
Pervious Total 2.09
Impervious Land Use acre
ROADS MOD 1.22
ROOF TOPS FLAT 0.99
SIDEWALKS MOD 0.45
Impervious Total 2.66
Basin Total 4.75
Element Flows To:
Surface Interflow Groundwater
Storm Capture 3 Storm Capture 3
Flow Control-Test 1/4/2018 8:39:45 AM Page 5
Routing Elements
Predeveloped Routing
Flow Control-Test 1/4/2018 8:39:45 AM Page 6
Mitigated Routing
Storm Capture 3
Dimensions
Depth:7 ft.
Length:1305 ft.
Width:7 ft.
Discharge Structure
Riser Height:6 ft.
Riser Diameter:18 in.
Notch Type:Rectangular
Notch Width:0.013 ft.
Notch Height:2.861 ft.
Orifice 1 Diameter:1.212 in.Elevation:0 ft.
Element Flows To:
Outlet 1 Outlet 2
SCapture Hydraulic Table
Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)Infilt(cfs)
0.0000 0.209 0.000 0.000 0.000
0.0778 0.209 0.016 0.011 0.000
0.1556 0.209 0.032 0.015 0.000
0.2333 0.209 0.048 0.019 0.000
0.3111 0.209 0.065 0.022 0.000
0.3889 0.209 0.081 0.024 0.000
0.4667 0.209 0.097 0.027 0.000
0.5444 0.209 0.114 0.029 0.000
0.6222 0.209 0.130 0.031 0.000
0.7000 0.209 0.146 0.033 0.000
0.7778 0.209 0.163 0.035 0.000
0.8556 0.209 0.179 0.036 0.000
0.9333 0.209 0.195 0.038 0.000
1.0111 0.209 0.212 0.040 0.000
1.0889 0.209 0.228 0.041 0.000
1.1667 0.209 0.244 0.043 0.000
1.2444 0.209 0.261 0.044 0.000
1.3222 0.209 0.277 0.045 0.000
1.4000 0.209 0.293 0.047 0.000
1.4778 0.209 0.309 0.048 0.000
1.5556 0.209 0.326 0.049 0.000
1.6333 0.209 0.342 0.050 0.000
1.7111 0.209 0.358 0.052 0.000
1.7889 0.209 0.375 0.053 0.000
1.8667 0.209 0.391 0.054 0.000
1.9444 0.209 0.407 0.055 0.000
2.0222 0.209 0.424 0.056 0.000
2.1000 0.209 0.440 0.057 0.000
2.1778 0.209 0.456 0.058 0.000
2.2556 0.209 0.473 0.059 0.000
2.3333 0.209 0.489 0.060 0.000
2.4111 0.209 0.505 0.061 0.000
2.4889 0.209 0.521 0.062 0.000
2.5667 0.209 0.538 0.063 0.000
2.6444 0.209 0.554 0.064 0.000
2.7222 0.209 0.570 0.065 0.000
Flow Control-Test 1/4/2018 8:39:45 AM Page 7
2.8000 0.209 0.587 0.066 0.000
2.8778 0.209 0.603 0.067 0.000
2.9556 0.209 0.619 0.068 0.000
3.0333 0.209 0.636 0.069 0.000
3.1111 0.209 0.652 0.070 0.000
3.1889 0.209 0.668 0.071 0.000
3.2667 0.209 0.685 0.073 0.000
3.3444 0.209 0.701 0.076 0.000
3.4222 0.209 0.717 0.079 0.000
3.5000 0.209 0.734 0.083 0.000
3.5778 0.209 0.750 0.086 0.000
3.6556 0.209 0.766 0.090 0.000
3.7333 0.209 0.782 0.094 0.000
3.8111 0.209 0.799 0.098 0.000
3.8889 0.209 0.815 0.102 0.000
3.9667 0.209 0.831 0.106 0.000
4.0444 0.209 0.848 0.110 0.000
4.1222 0.209 0.864 0.114 0.000
4.2000 0.209 0.880 0.119 0.000
4.2778 0.209 0.897 0.124 0.000
4.3556 0.209 0.913 0.129 0.000
4.4333 0.209 0.929 0.134 0.000
4.5111 0.209 0.946 0.139 0.000
4.5889 0.209 0.962 0.164 0.000
4.6667 0.209 0.978 0.171 0.000
4.7444 0.209 0.995 0.178 0.000
4.8222 0.209 1.011 0.186 0.000
4.9000 0.209 1.027 0.193 0.000
4.9778 0.209 1.043 0.201 0.000
5.0556 0.209 1.060 0.209 0.000
5.1333 0.209 1.076 0.217 0.000
5.2111 0.209 1.092 0.225 0.000
5.2889 0.209 1.109 0.234 0.000
5.3667 0.209 1.125 0.242 0.000
5.4444 0.209 1.141 0.251 0.000
5.5222 0.209 1.158 0.259 0.000
5.6000 0.209 1.174 0.268 0.000
5.6778 0.209 1.190 0.277 0.000
5.7556 0.209 1.207 0.286 0.000
5.8333 0.209 1.223 0.296 0.000
5.9111 0.209 1.239 0.305 0.000
5.9889 0.209 1.255 0.314 0.000
6.0667 0.209 1.272 0.590 0.000
6.1444 0.209 1.288 1.186 0.000
6.2222 0.209 1.304 1.954 0.000
6.3000 0.209 1.321 2.819 0.000
6.3778 0.209 1.337 3.705 0.000
6.4556 0.209 1.353 4.535 0.000
6.5333 0.209 1.370 5.244 0.000
6.6111 0.209 1.386 5.789 0.000
6.6889 0.209 1.402 6.170 0.000
6.7667 0.209 1.419 6.527 0.000
6.8444 0.209 1.435 6.835 0.000
6.9222 0.209 1.451 7.128 0.000
7.0000 0.209 1.468 7.410 0.000
Flow Control-Test 1/4/2018 8:39:45 AM Page 8
Analysis Results
POC 1
+ Predeveloped x Mitigated
Predeveloped Landuse Totals for POC #1
Total Pervious Area:4.75
Total Impervious Area:0
Mitigated Landuse Totals for POC #1
Total Pervious Area:2.09
Total Impervious Area:2.66
Flow Frequency Method:Log Pearson Type III 17B
Flow Frequency Return Periods for Predeveloped. POC #1
Return Period Flow(cfs)
2 year 0.089097
5 year 0.143292
10 year 0.18952
25 year 0.261691
50 year 0.326799
100 year 0.402851
Flow Frequency Return Periods for Mitigated. POC #1
Return Period Flow(cfs)
2 year 0.089097
5 year 0.143292
10 year 0.18952
25 year 0.261691
50 year 0.326799
100 year 0.402851
Annual Peaks
Annual Peaks for Predeveloped and Mitigated. POC #1
Year Predeveloped Mitigated
1949 0.062 0.062
1950 0.098 0.098
1951 0.278 0.278
1952 0.055 0.055
1953 0.067 0.067
1954 0.071 0.071
1955 0.071 0.071
1956 0.116 0.116
1957 0.070 0.070
1958 0.082 0.082
Flow Control-Test 1/4/2018 8:39:47 AM Page 9
1959 0.063 0.063
1960 0.210 0.210
1961 0.086 0.086
1962 0.052 0.052
1963 0.071 0.071
1964 0.071 0.071
1965 0.105 0.105
1966 0.066 0.066
1967 0.080 0.080
1968 0.068 0.068
1969 0.065 0.065
1970 0.069 0.069
1971 0.077 0.077
1972 0.190 0.190
1973 0.100 0.100
1974 0.081 0.081
1975 0.067 0.067
1976 0.073 0.073
1977 0.056 0.056
1978 0.086 0.086
1979 0.052 0.052
1980 0.210 0.210
1981 0.068 0.068
1982 0.130 0.130
1983 0.075 0.075
1984 0.058 0.058
1985 0.059 0.059
1986 0.113 0.113
1987 0.182 0.182
1988 0.059 0.059
1989 0.057 0.057
1990 0.224 0.224
1991 0.210 0.210
1992 0.088 0.088
1993 0.059 0.059
1994 0.050 0.050
1995 0.091 0.091
1996 0.275 0.275
1997 0.240 0.240
1998 0.059 0.059
1999 0.181 0.181
2000 0.074 0.074
2001 0.048 0.048
2002 0.109 0.109
2003 0.063 0.063
2004 0.244 0.244
2005 0.075 0.075
2006 0.106 0.106
2007 0.358 0.358
2008 0.261 0.261
2009 0.120 0.120
Ranked Annual Peaks
Ranked Annual Peaks for Predeveloped and Mitigated. POC #1
Rank Predeveloped Mitigated
1 0.3581 0.3581
2 0.2780 0.2780
3 0.2751 0.2751
Flow Control-Test 1/4/2018 8:39:47 AM Page 10
4 0.2614 0.2614
5 0.2440 0.2440
6 0.2403 0.2403
7 0.2237 0.2237
8 0.2100 0.2100
9 0.2100 0.2100
10 0.2099 0.2099
11 0.1898 0.1898
12 0.1816 0.1816
13 0.1814 0.1814
14 0.1305 0.1305
15 0.1195 0.1195
16 0.1161 0.1161
17 0.1128 0.1128
18 0.1095 0.1095
19 0.1056 0.1056
20 0.1047 0.1047
21 0.0998 0.0998
22 0.0980 0.0980
23 0.0914 0.0914
24 0.0881 0.0881
25 0.0862 0.0862
26 0.0855 0.0855
27 0.0818 0.0818
28 0.0807 0.0807
29 0.0802 0.0802
30 0.0768 0.0768
31 0.0751 0.0751
32 0.0751 0.0751
33 0.0743 0.0743
34 0.0727 0.0727
35 0.0714 0.0714
36 0.0713 0.0713
37 0.0709 0.0709
38 0.0707 0.0707
39 0.0701 0.0701
40 0.0685 0.0685
41 0.0684 0.0684
42 0.0678 0.0678
43 0.0672 0.0672
44 0.0672 0.0672
45 0.0657 0.0657
46 0.0646 0.0646
47 0.0633 0.0633
48 0.0631 0.0631
49 0.0618 0.0618
50 0.0593 0.0593
51 0.0590 0.0590
52 0.0588 0.0588
53 0.0586 0.0586
54 0.0582 0.0582
55 0.0571 0.0571
56 0.0563 0.0563
57 0.0552 0.0552
58 0.0525 0.0525
59 0.0523 0.0523
60 0.0501 0.0501
61 0.0484 0.0484
Flow Control-Test 1/4/2018 8:39:47 AM Page 11
Flow Control-Test 1/4/2018 8:39:47 AM Page 12
Duration Flows
The Facility PASSED
Flow(cfs)Predev Mit Percentage Pass/Fail
0.0445 17477 14078 80 Pass
0.0474 15524 8872 57 Pass
0.0503 14264 5514 38 Pass
0.0531 13107 4864 37 Pass
0.0560 11668 4575 39 Pass
0.0588 10705 4365 40 Pass
0.0617 9589 4147 43 Pass
0.0645 8864 3980 44 Pass
0.0674 8226 3839 46 Pass
0.0702 7394 3692 49 Pass
0.0731 6857 3602 52 Pass
0.0759 6192 3474 56 Pass
0.0788 5788 3324 57 Pass
0.0816 5405 3193 59 Pass
0.0845 4943 3067 62 Pass
0.0873 4635 2969 64 Pass
0.0902 4237 2789 65 Pass
0.0930 3978 2686 67 Pass
0.0959 3720 2554 68 Pass
0.0987 3403 2400 70 Pass
0.1016 3178 2280 71 Pass
0.1044 2982 2182 73 Pass
0.1073 2725 2056 75 Pass
0.1101 2526 1964 77 Pass
0.1130 2327 1801 77 Pass
0.1158 2165 1691 78 Pass
0.1187 2019 1576 78 Pass
0.1215 1839 1436 78 Pass
0.1244 1731 1371 79 Pass
0.1272 1581 1278 80 Pass
0.1301 1460 1217 83 Pass
0.1329 1352 1171 86 Pass
0.1358 1243 1119 90 Pass
0.1386 1167 1079 92 Pass
0.1415 1086 1017 93 Pass
0.1443 1026 956 93 Pass
0.1472 973 894 91 Pass
0.1500 890 812 91 Pass
0.1529 840 741 88 Pass
0.1557 763 653 85 Pass
0.1586 727 593 81 Pass
0.1614 685 540 78 Pass
0.1643 629 474 75 Pass
0.1671 596 432 72 Pass
0.1700 549 368 67 Pass
0.1728 509 330 64 Pass
0.1757 476 290 60 Pass
0.1785 429 229 53 Pass
0.1814 391 197 50 Pass
0.1842 356 162 45 Pass
0.1871 329 140 42 Pass
0.1900 305 120 39 Pass
0.1928 272 83 30 Pass
Flow Control-Test 1/4/2018 8:39:47 AM Page 13
0.1957 246 62 25 Pass
0.1985 218 52 23 Pass
0.2014 200 45 22 Pass
0.2042 179 38 21 Pass
0.2071 153 29 18 Pass
0.2099 133 16 12 Pass
0.2128 122 15 12 Pass
0.2156 106 15 14 Pass
0.2185 97 14 14 Pass
0.2213 84 14 16 Pass
0.2242 77 14 18 Pass
0.2270 69 14 20 Pass
0.2299 61 12 19 Pass
0.2327 54 12 22 Pass
0.2356 46 12 26 Pass
0.2384 41 12 29 Pass
0.2413 32 12 37 Pass
0.2441 25 11 44 Pass
0.2470 22 11 50 Pass
0.2498 20 11 55 Pass
0.2527 18 10 55 Pass
0.2555 14 10 71 Pass
0.2584 12 9 75 Pass
0.2612 10 8 80 Pass
0.2641 7 7 100 Pass
0.2669 7 6 85 Pass
0.2698 7 5 71 Pass
0.2726 6 5 83 Pass
0.2755 6 5 83 Pass
0.2783 6 3 50 Pass
0.2812 6 1 16 Pass
0.2840 6 1 16 Pass
0.2869 5 0 0 Pass
0.2897 5 0 0 Pass
0.2926 5 0 0 Pass
0.2954 5 0 0 Pass
0.2983 5 0 0 Pass
0.3011 5 0 0 Pass
0.3040 5 0 0 Pass
0.3068 5 0 0 Pass
0.3097 4 0 0 Pass
0.3125 3 0 0 Pass
0.3154 3 0 0 Pass
0.3182 3 0 0 Pass
0.3211 3 0 0 Pass
0.3239 3 0 0 Pass
0.3268 3 0 0 Pass
Flow Control-Test 1/4/2018 8:39:47 AM Page 14
Water Quality
Water Quality BMP Flow and Volume for POC #1
On-line facility volume:0.1524 acre-feet
On-line facility target flow:0.2285 cfs.
Adjusted for 15 min:0.2285 cfs.
Off-line facility target flow:0.1288 cfs.
Adjusted for 15 min:0.1288 cfs.
Flow Control-Test 1/4/2018 8:39:47 AM Page 15
LID Report
Flow Control-Test 1/4/2018 8:39:47 AM Page 16
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-Test 1/4/2018 8:39:48 AM Page 17
Appendix
Predeveloped Schematic
Flow Control-Test 1/4/2018 8:39:48 AM Page 18
Mitigated Schematic
Flow Control-Test 1/4/2018 8:39:48 AM Page 19
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-Test.wdm
MESSU 25 PreFlow Control-Test.MES
27 PreFlow Control-Test.L61
28 PreFlow Control-Test.L62
30 POCFlow Control-Test1.dat
END FILES
OPN SEQUENCE
INGRP INDELT 00:15
PERLND 11
COPY 501
DISPLY 1
END INGRP
END OPN SEQUENCE
DISPLY
DISPLY-INFO1
# - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND
1 Basin 1 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 ***
11 C, Forest, 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 ***
11 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 *********
11 0 0 4 0 0 0 0 0 0 0 0 0 1 9
END PRINT-INFO
Flow Control-Test 1/4/2018 8:39:48 AM Page 20
PWAT-PARM1
<PLS > PWATER variable monthly parameter value flags ***
# - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT ***
11 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
11 0 4.5 0.08 400 0.1 0.5 0.996
END PWAT-PARM2
PWAT-PARM3
<PLS > PWATER input info: Part 3 ***
# - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP
11 0 0 2 2 0 0 0
END PWAT-PARM3
PWAT-PARM4
<PLS > PWATER input info: Part 4 ***
# - # CEPSC UZSN NSUR INTFW IRC LZETP ***
11 0.2 0.5 0.35 6 0.5 0.7
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
11 0 0 0 0 2.5 1 0
END PWAT-STATE1
END PERLND
IMPLND
GEN-INFO
<PLS ><-------Name-------> Unit-systems Printer ***
# - # User t-series Engl Metr ***
in out ***
END GEN-INFO
*** Section IWATER***
ACTIVITY
<PLS > ************* Active Sections *****************************
# - # ATMP SNOW IWAT SLD IWG IQAL ***
END ACTIVITY
PRINT-INFO
<ILS > ******** Print-flags ******** PIVL PYR
# - # ATMP SNOW IWAT SLD IWG IQAL *********
END PRINT-INFO
IWAT-PARM1
<PLS > IWATER variable monthly parameter value flags ***
# - # CSNO RTOP VRS VNN RTLI ***
END IWAT-PARM1
IWAT-PARM2
<PLS > IWATER input info: Part 2 ***
# - # *** LSUR SLSUR NSUR RETSC
END IWAT-PARM2
IWAT-PARM3
<PLS > IWATER input info: Part 3 ***
# - # ***PETMAX PETMIN
END IWAT-PARM3
IWAT-STATE1
<PLS > *** Initial conditions at start of simulation
# - # *** RETS SURS
END IWAT-STATE1
Flow Control-Test 1/4/2018 8:39:48 AM Page 21
END IMPLND
SCHEMATIC
<-Source-> <--Area--> <-Target-> MBLK ***
<Name> # <-factor-> <Name> # Tbl# ***
Basin 1***
PERLND 11 4.75 COPY 501 12
PERLND 11 4.75 COPY 501 13
******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
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
Flow Control-Test 1/4/2018 8:39:48 AM Page 22
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
END MASS-LINK
END RUN
Flow Control-Test 1/4/2018 8:39:48 AM Page 23
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-Test.wdm
MESSU 25 MitFlow Control-Test.MES
27 MitFlow Control-Test.L61
28 MitFlow Control-Test.L62
30 POCFlow Control-Test1.dat
END FILES
OPN SEQUENCE
INGRP INDELT 00:15
PERLND 17
PERLND 12
IMPLND 2
IMPLND 4
IMPLND 9
RCHRES 1
COPY 1
COPY 501
DISPLY 1
END INGRP
END OPN SEQUENCE
DISPLY
DISPLY-INFO1
# - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND
1 Storm Capture 3 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 ***
17 C, Lawn, Mod 1 1 1 1 27 0
12 C, Forest, Steep 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 ***
17 0 0 1 0 0 0 0 0 0 0 0 0
12 0 0 1 0 0 0 0 0 0 0 0 0
Flow Control-Test 1/4/2018 8:39:48 AM Page 24
END ACTIVITY
PRINT-INFO
<PLS > ***************** Print-flags ***************************** PIVL PYR
# - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *********
17 0 0 4 0 0 0 0 0 0 0 0 0 1 9
12 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 ***
17 0 0 0 0 0 0 0 0 0 0 0
12 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
17 0 4.5 0.03 400 0.1 0.5 0.996
12 0 4.5 0.08 400 0.15 0.5 0.996
END PWAT-PARM2
PWAT-PARM3
<PLS > PWATER input info: Part 3 ***
# - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP
17 0 0 2 2 0 0 0
12 0 0 2 2 0 0 0
END PWAT-PARM3
PWAT-PARM4
<PLS > PWATER input info: Part 4 ***
# - # CEPSC UZSN NSUR INTFW IRC LZETP ***
17 0.1 0.25 0.25 6 0.5 0.25
12 0.2 0.3 0.35 6 0.3 0.7
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
17 0 0 0 0 2.5 1 0
12 0 0 0 0 2.5 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 0 1 9
4 0 0 4 0 0 0 1 9
Flow Control-Test 1/4/2018 8:39:48 AM Page 25
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
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# ***
Basin 1***
PERLND 17 0.89 RCHRES 1 2
PERLND 17 0.89 RCHRES 1 3
PERLND 12 1.2 RCHRES 1 2
PERLND 12 1.2 RCHRES 1 3
IMPLND 2 1.22 RCHRES 1 5
IMPLND 4 0.99 RCHRES 1 5
IMPLND 9 0.45 RCHRES 1 5
******Routing******
PERLND 17 0.89 COPY 1 12
PERLND 12 1.2 COPY 1 12
IMPLND 2 1.22 COPY 1 15
IMPLND 4 0.99 COPY 1 15
IMPLND 9 0.45 COPY 1 15
PERLND 17 0.89 COPY 1 13
PERLND 12 1.2 COPY 1 13
RCHRES 1 1 COPY 501 16
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
Flow Control-Test 1/4/2018 8:39:48 AM Page 26
RCHRES
GEN-INFO
RCHRES Name Nexits Unit Systems Printer ***
# - #<------------------><---> User T-series Engl Metr LKFG ***
in out ***
1 Storm Capture 3-009 1 1 1 1 28 0 1
END GEN-INFO
*** Section RCHRES***
ACTIVITY
<PLS > ************* Active Sections *****************************
# - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG ***
1 1 0 0 0 0 0 0 0 0 0
END ACTIVITY
PRINT-INFO
<PLS > ***************** Print-flags ******************* PIVL PYR
# - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR *********
1 4 0 0 0 0 0 0 0 0 0 1 9
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
* * * * * * * * * * * * * * ***
1 0 1 0 0 4 0 0 0 0 0 0 0 0 0 2 2 2 2 2
END HYDR-PARM1
HYDR-PARM2
# - # FTABNO LEN DELTH STCOR KS DB50 ***
<------><--------><--------><--------><--------><--------><--------> ***
1 1 0.25 0.0 0.0 0.5 0.0
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
<------><--------> <---><---><---><---><---> *** <---><---><---><---><--->
1 0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
END HYDR-INIT
END RCHRES
SPEC-ACTIONS
END SPEC-ACTIONS
FTABLES
FTABLE 1
92 4
Depth Area Volume Outflow1 Velocity Travel Time***
(ft) (acres) (acre-ft) (cfs) (ft/sec) (Minutes)***
0.000000 0.209119 0.000000 0.000000
0.077778 0.209119 0.017043 0.011117
0.155556 0.209119 0.033463 0.015722
0.233333 0.209119 0.049728 0.019255
0.311111 0.209119 0.065993 0.022234
0.388889 0.209119 0.082258 0.024859
0.466667 0.209119 0.098523 0.027231
0.544444 0.209119 0.114788 0.029413
0.622222 0.209119 0.131052 0.031444
0.700000 0.209119 0.147317 0.033351
0.777778 0.209119 0.163582 0.035155
0.855556 0.209119 0.179847 0.036871
0.933333 0.209119 0.196112 0.038511
1.011111 0.209119 0.212376 0.040083
1.088889 0.209119 0.228641 0.041596
1.166667 0.209119 0.244906 0.043056
1.244444 0.209119 0.261171 0.044468
1.322222 0.209119 0.277436 0.045837
1.400000 0.209119 0.293701 0.047166
Flow Control-Test 1/4/2018 8:39:48 AM Page 27
1.477778 0.209119 0.309965 0.048458
1.555556 0.209119 0.326230 0.049717
1.633333 0.209119 0.342495 0.050945
1.711111 0.209119 0.358760 0.052144
1.788889 0.209119 0.375025 0.053316
1.866667 0.209119 0.391290 0.054462
1.944444 0.209119 0.407554 0.055586
2.022222 0.209119 0.423819 0.056686
2.100000 0.209119 0.440084 0.057766
2.177778 0.209119 0.456349 0.058826
2.255556 0.209119 0.472614 0.059867
2.333333 0.209119 0.488878 0.060891
2.411111 0.209119 0.505143 0.061897
2.488889 0.209119 0.521408 0.062888
2.566667 0.209119 0.537673 0.063863
2.644444 0.209119 0.553938 0.064823
2.722222 0.209119 0.570203 0.065770
2.800000 0.209119 0.586467 0.066703
2.877778 0.209119 0.602732 0.067623
2.955556 0.209119 0.618997 0.068530
3.033333 0.209119 0.635262 0.069426
3.111111 0.209119 0.651527 0.070311
3.188889 0.209119 0.667792 0.071657
3.266667 0.209119 0.684056 0.073950
3.344444 0.209119 0.700321 0.076720
3.422222 0.209119 0.716586 0.079825
3.500000 0.209119 0.732851 0.083184
3.577778 0.209119 0.749116 0.086740
3.655556 0.209119 0.765380 0.090453
3.733333 0.209119 0.781645 0.094288
3.811111 0.209119 0.797910 0.098217
3.888889 0.209119 0.814175 0.102216
3.966667 0.209119 0.830440 0.106263
4.044444 0.209119 0.846705 0.110339
4.122222 0.209119 0.862969 0.114428
4.200000 0.209119 0.879234 0.119083
4.277778 0.209119 0.895499 0.124022
4.355556 0.209119 0.911764 0.129099
4.433333 0.209119 0.928029 0.134310
4.511111 0.209119 0.944293 0.139651
4.588889 0.209119 0.960558 0.164244
4.666667 0.209119 0.976823 0.171394
4.744444 0.209119 0.993088 0.178703
4.822222 0.209119 1.009353 0.186168
4.900000 0.209119 1.025618 0.193786
4.977778 0.209119 1.041882 0.201552
5.055556 0.209119 1.058147 0.209464
5.133333 0.209119 1.074412 0.217519
5.211111 0.209119 1.090677 0.225713
5.288889 0.209119 1.106942 0.234045
5.366667 0.209119 1.123207 0.242512
5.444444 0.209119 1.139471 0.251111
5.522222 0.209119 1.155736 0.259840
5.600000 0.209119 1.172001 0.268698
5.677778 0.209119 1.188266 0.277681
5.755556 0.209119 1.204531 0.286789
5.833333 0.209119 1.220795 0.296019
5.911111 0.209119 1.237060 0.305370
5.988889 0.209119 1.253325 0.314839
6.066667 0.209119 1.269590 0.590438
6.144444 0.209119 1.285855 1.186361
6.222222 0.209119 1.302120 1.954938
6.300000 0.209119 1.318384 2.819874
6.377778 0.209119 1.334649 3.705512
6.455556 0.209119 1.350914 4.535932
6.533333 0.209119 1.367179 5.244646
6.611111 0.209119 1.383444 5.789395
6.688889 0.209119 1.399709 6.170449
6.766667 0.209119 1.415973 6.527303
6.844444 0.209119 1.432238 6.835044
Flow Control-Test 1/4/2018 8:39:48 AM Page 28
6.922222 0.209119 1.448503 7.128934
7.000000 0.209119 1.464768 7.410692
7.077778 0.209119 1.481033 7.681709
END FTABLE 1
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***
RCHRES 1 HYDR RO 1 1 1 WDM 1000 FLOW ENGL REPL
RCHRES 1 HYDR STAGE 1 1 1 WDM 1001 STAG ENGL REPL
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 2
PERLND PWATER SURO 0.083333 RCHRES INFLOW IVOL
END MASS-LINK 2
MASS-LINK 3
PERLND PWATER IFWO 0.083333 RCHRES INFLOW IVOL
END MASS-LINK 3
MASS-LINK 5
IMPLND IWATER SURO 0.083333 RCHRES INFLOW IVOL
END MASS-LINK 5
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
MASS-LINK 16
RCHRES ROFLOW COPY INPUT MEAN
END MASS-LINK 16
END MASS-LINK
END RUN
Renton Senior housing WWHM Modeling
For Treatment
APPENDIX F
STORMWATER PLAN SHEETS
TALBOT ROAD S.LEGENDSEC. 31, T23N., R5E., W.M.JOB NO:DRAWING FILE NO:DATE:DESIGNER:BYDATEREVISIONSDRAWN BY:SHEET TITLE:OFDRAWING NO:SHEET NO:PROJECT NAME:SEAL:APPROVED BY:RENTON SENIOR HOUSINGRENTON, WAK. MELVINR. JARVISDECEMBER, 20172386.0368730 TALLON LANE NE, SUITE 200, LACEY, WA 98516P: 360-352-1465 F: 360-352-1509SCJALLIANCE.COMCALL BEFORE YOU DIGSENNIOALF EP R ON D43668IGERSERETSSTATEOFWASHIGINEERG T O NROSS D. JARVIS12/22/2017STORM DRAINAGE PLAN2386.03 SD-01SD-01DRAWN BY4SCALE IN FEET03060FFE:164.0FFE:176.0
APPENDIX G
GEOTECHNICAL REPORT
EarthSolutionsNWLLC
EarthSolutions
NW LLC
Geotechnical Engineering
Geology
Environmental Scientists
Construction Monitoring
1805 -136th Place N.E.,Suite 201 Bellevue,WA 98005
(425)449-4704 Fax (425)449-4711
www.earthsolutionsnw.com
GEOTECHNICAL ENGINEERING STUDY
PROPOSED COMMERCIAL DEVELOPMENT
TALBOT ROAD SOUTH
AND SOUTH 45th PLACE
RENTON,WASHINGTON
ES-0895.03
Drwn.CAM
Checked CGH Date July 2017
Date 07/20/2017 Proj.No.0895.03
Plate 1
Earth Solutions NWLLC
Geotechnical Engineering,Construction Monitoring
EarthSolutionsNWLLC
EarthSolutions
NW LLC and Environmental Sciences
Vicinity Map
Talbot Commercial
Renton,Washington
Reference:
King County,Washington
Map 686
By The Thomas Guide
Rand McNally
32nd Edition
NORTH
NOTE:This plate may contain areas of color.ESNW cannot be
responsible for any subsequent misinterpretation of the information
resulting from black &white reproductions of this plate.
SITE
Plate
Proj.No.
Date
Checked By
Drwn.ByEarthSolutionsNWLLCGeotechnicalEngineering,ConstructionMonitoringandEnvironmentalSciencesEarthSolutionsNWLLCEarthSolutionsNWLLCtalbotrd.s.160
160
170
170
180
180 190 200 210 220
230
240
240230220210200190
TP-1
TP-2
TP-3
TP-4TP-5
TP-6
TP-1
TP-2
TP-3
TP-4
TP-5
NOTE:This plate may contain areas of color.ESNW cannot be
responsible for any subsequent misinterpretation of the information
resulting from black &white reproductions of this plate.
NOTE:The graphics shown on this plate are not intended for design
purposes or precise scale measurements,but only to illustrate the
approximate test locations relative to the approximate locations of
existing and /or proposed site features.The information illustrated
is largely based on data provided by the client at the time of our
study.ESNW cannot be responsible for subsequent design changes
or interpretation of the data by others.
LEGEND
Approximate Location of
ESNW Test Pit,Proj.No.
ES-0895,May 2007
Approximate Location of
ESNW Test Pit,Proj.No.
ES-0690,Nov.2006
Subject Site
TP-1
NORTH
0 4 0 8 0 1 6 0
Scale in Feet1"=8 0 '
TP-1
CAM
CGH
07/20/2017
0895.03
2TestPitLocationPlanTalbotCommercial Renton,Washington
Drwn.CAM
Checked CGH Date July 2017
Date 07/20/2017 Proj.No.0895.03
Plate 3
Earth Solutions NWLLC
Geotechnical Engineering,Construction Monitoring
and Environmental Sciences
EarthSolutionsNWLLC
EarthSolutions
NW LLC
RETAINING WALL DRAINAGE DETAIL
Talbot Commercial
Renton,Washington
NOTES:
Free Draining Backfill should consist
of soil having less than 5 percent fines.
Percent passing #4 should be 25 to
75 percent.
Sheet Drain may be feasible in lieu
of Free Draining Backfill,per ESNW
recommendations.
Drain Pipe should consist of perforated,
rigid PVC Pipe surrounded with 1"
Drain Rock.
LEGEND:
Free Draining Structural Backfill
1 inch Drain Rock
18"Min.
Structural
Fill
Perforated Drain Pipe
(Surround In Drain Rock)
SCHEMATIC ONLY -NOT TO SCALE
NOT A CONSTRUCTION DRAWING
Drwn.CAM
Checked CGH Date July 2017
Date 07/20/2017 Proj.No.0895.03
Plate 4
Earth Solutions NWLLC
Geotechnical Engineering,Construction Monitoring
and Environmental Sciences
EarthSolutionsNWLLC
EarthSolutions
NW LLC
FOOTING DRAIN DETAIL
Talbot Commercial
Renton,Washington
Slope
Perforated Rigid Drain Pipe
(Surround with 1"Rock)
18"(Min.)
NOTES:
Do NOT tie roof downspouts
to Footing Drain.
Surface Seal to consist of
12"of less permeable,suitable
soil.Slope away from building.
LEGEND:
Surface Seal;native soil or
other low permeability material.
1"Drain Rock
SCHEMATIC ONLY -NOT TO SCALE
NOT A CONSTRUCTION DRAW ING
APPENDIX H
CONSTRUCTION SWPPP
APPENDIX I
WORKSHEETS
CED Permit #:########UnitReference #PriceUnitQuantity CostBackfill & compaction-embankmentESC-16.50$ CY Check dams, 4" minus rockESC-2SWDM 5.4.6.380.00$ Each Catch Basin ProtectionESC-335.50$ Each16568.00Crushed surfacing 1 1/4" minusESC-4WSDOT 9-03.9(3)95.00$ CY DitchingESC-59.00$ CY Excavation-bulkESC-62.00$ CY Fence, siltESC-7SWDM 5.4.3.11.50$ LF16802,520.00Fence, Temporary (NGPE)ESC-81.50$ LF Geotextile FabricESC-92.50$ SY25006,250.00Hay Bale Silt TrapESC-100.50$ Each HydroseedingESC-11SWDM 5.4.2.40.80$ SY46003,680.00Interceptor Swale / DikeESC-121.00$ LF Jute MeshESC-13SWDM 5.4.2.23.50$ SY Level SpreaderESC-141.75$ LF Mulch, by hand, straw, 3" deepESC-15SWDM 5.4.2.12.50$ SY Mulch, by machine, straw, 2" deepESC-16SWDM 5.4.2.12.00$ SY Piping, temporary, CPP, 6"ESC-1712.00$ LF Piping, temporary, CPP, 8"ESC-1814.00$ LF Piping, temporary, CPP, 12"ESC-1918.00$ LF Plastic covering, 6mm thick, sandbaggedESC-20SWDM 5.4.2.34.00$ SY Rip Rap, machine placed; slopesESC-21WSDOT 9-13.1(2)45.00$ CY Rock Construction Entrance, 50'x15'x1'ESC-22SWDM 5.4.4.11,800.00$ Each Rock Construction Entrance, 100'x15'x1'ESC-23SWDM 5.4.4.13,200.00$ Each13,200.00Sediment pond riser assemblyESC-24SWDM 5.4.5.22,200.00$ Each Sediment trap, 5' high berm ESC-25SWDM 5.4.5.119.00$ LF Sed. trap, 5' high, riprapped spillway berm section ESC-26SWDM 5.4.5.170.00$ LF Seeding, by handESC-27SWDM 5.4.2.41.00$ SY Sodding, 1" deep, level groundESC-28SWDM 5.4.2.58.00$ SY Sodding, 1" deep, sloped groundESC-29SWDM 5.4.2.510.00$ SY TESC SupervisorESC-30110.00$ HR Water truck, dust controlESC-31SWDM 5.4.7140.00$ HR UnitReference #PriceUnitQuantity Cost EROSION/SEDIMENT SUBTOTAL:16,218.00SALES TAX @ 10%1,621.80EROSION/SEDIMENT TOTAL:17,839.80(A)SITE IMPROVEMENT BOND QUANTITY WORKSHEETFOR EROSION & SEDIMENT CONTROLDescription No.(A)WRITE-IN-ITEMS Page 3 of 14Ref 8-H Bond Quantity WorksheetSECTION II.a EROSION_CONTROLUnit Prices Updated: 06/14/2016Version: 04/26/2017Printed 12/20/2017
CED Permit #:########ExistingFuture PublicPrivateRight-of-WayImprovementsImprovements(D) (E)DescriptionNo. Unit PriceUnitQuant.CostQuant.CostQuant.CostQuant.CostGENERAL ITEMS Backfill & Compaction- embankmentGI-16.00$ CYBackfill & Compaction- trenchGI-29.00$ CYClear/Remove Brush, by hand (SY)GI-31.00$ SYBollards - fixedGI-4240.74$ EachBollards - removableGI-5452.34$ EachClearing/Grubbing/Tree RemovalGI-610,000.00$ AcreExcavation - bulkGI-72.00$ CYExcavation - TrenchGI-85.00$ CYFencing, cedar, 6' highGI-920.00$ LFFencing, chain link, 4'GI-1038.31$ LFFencing, chain link, vinyl coated, 6' highGI-1120.00$ LFFencing, chain link, gate, vinyl coated, 20' GI-121,400.00$ EachFill & compact - common barrowGI-1325.00$ CYFill & compact - gravel baseGI-1427.00$ CYFill & compact - screened topsoilGI-1539.00$ CYGabion, 12" deep, stone filled mesh GI-1665.00$ SYGabion, 18" deep, stone filled mesh GI-1790.00$ SYGabion, 36" deep, stone filled meshGI-18150.00$ SYGrading, fine, by handGI-192.50$ SYGrading, fine, with graderGI-202.00$ SYMonuments, 3' LongGI-21250.00$ EachSensitive Areas SignGI-227.00$ EachSodding, 1" deep, sloped groundGI-238.00$ SYSurveying, line & gradeGI-24850.00$ DaySurveying, lot location/linesGI-251,800.00$ AcreTopsoil Type A (imported)GI-2628.50$ CYTraffic control crew ( 2 flaggers )GI-27120.00$ HRTrail, 4" chipped woodGI-288.00$ SYTrail, 4" crushed cinderGI-299.00$ SYTrail, 4" top courseGI-3012.00$ SYConduit, 2"GI-315.00$ LFWall, retaining, concreteGI-3255.00$ SFWall, rockeryGI-3315.00$ SFSUBTOTAL THIS PAGE:(B)(C)(D)(E)SITE IMPROVEMENT BOND QUANTITY WORKSHEETFOR STREET AND SITE IMPROVEMENTSQuantity Remaining (Bond Reduction) (B)(C)Page 4 of 14Ref 8-H Bond Quantity WorksheetSECTION II.b TRANSPORTATIONUnit Prices Updated: 06/14/2016Version: 04/26/2017Printed 12/20/2017
CED Permit #:########ExistingFuture PublicPrivateRight-of-WayImprovementsImprovements(D) (E)DescriptionNo. Unit PriceUnitQuant.CostQuant.CostQuant.CostQuant.CostSITE IMPROVEMENT BOND QUANTITY WORKSHEETFOR STREET AND SITE IMPROVEMENTSQuantity Remaining (Bond Reduction) (B)(C)ROAD IMPROVEMENT/PAVEMENT/SURFACINGAC Grinding, 4' wide machine < 1000syRI-130.00$ SYAC Grinding, 4' wide machine 1000-2000syRI-216.00$ SYAC Grinding, 4' wide machine > 2000syRI-310.00$ SYAC Removal/DisposalRI-435.00$ SYBarricade, Type III ( Permanent )RI-556.00$ LFGuard RailRI-630.00$ LFCurb & Gutter, rolledRI-717.00$ LFCurb & Gutter, verticalRI-812.50$ LFCurb and Gutter, demolition and disposalRI-918.00$ LFCurb, extruded asphaltRI-105.50$ LFCurb, extruded concreteRI-117.00$ LFSawcut, asphalt, 3" depthRI-121.85$ LFSawcut, concrete, per 1" depthRI-133.00$ LFSealant, asphaltRI-142.00$ LFShoulder, gravel, 4" thickRI-1515.00$ SYSidewalk, 4" thickRI-1638.00$ SYSidewalk, 4" thick, demolition and disposalRI-1732.00$ SYSidewalk, 5" thickRI-1841.00$ SYSidewalk, 5" thick, demolition and disposalRI-1940.00$ SYSign, Handicap RI-2085.00$ EachStriping, per stallRI-217.00$ EachStriping, thermoplastic, ( for crosswalk )RI-223.00$ SFStriping, 4" reflectorized lineRI-230.50$ LFAdditional 2.5" Crushed SurfacingRI-243.60$ SYHMA 1/2" Overlay 1.5" RI-2514.00$ SYHMA 1/2" Overlay 2"RI-2618.00$ SYHMA Road, 2", 4" rock, First 2500 SYRI-2728.00$ SYHMA Road, 2", 4" rock, Qty. over 2500SYRI-2821.00$ SYHMA Road, 4", 6" rock, First 2500 SYRI-2945.00$ SYHMA Road, 4", 6" rock, Qty. over 2500 SYRI-3037.00$ SYHMA Road, 4", 4.5" ATBRI-3138.00$ SYGravel Road, 4" rock, First 2500 SYRI-3215.00$ SYGravel Road, 4" rock, Qty. over 2500 SYRI-3310.00$ SYThickened EdgeRI-348.60$ LFSUBTOTAL THIS PAGE:(B)(C)(D)(E)Page 5 of 14Ref 8-H Bond Quantity WorksheetSECTION II.b TRANSPORTATIONUnit Prices Updated: 06/14/2016Version: 04/26/2017Printed 12/20/2017
CED Permit #:########ExistingFuture PublicPrivateRight-of-WayImprovementsImprovements(D) (E)DescriptionNo. Unit PriceUnitQuant.CostQuant.CostQuant.CostQuant.CostSITE IMPROVEMENT BOND QUANTITY WORKSHEETFOR STREET AND SITE IMPROVEMENTSQuantity Remaining (Bond Reduction) (B)(C)PARKING LOT SURFACINGNo.2" AC, 2" top course rock & 4" borrowPL-121.00$ SY2" AC, 1.5" top course & 2.5" base coursePL-228.00$ SY852,380.001764,928.005555155,540.004" select borrowPL-35.00$ SY1.5" top course rock & 2.5" base coursePL-414.00$ SYSUBTOTAL PARKING LOT SURFACING:2,380.004,928.00155,540.00(B)(C)(D)(E)LANDSCAPING & VEGETATIONNo.Street TreesLA-1Median LandscapingLA-2Right-of-Way LandscapingLA-3Wetland LandscapingLA-4SUBTOTAL LANDSCAPING & VEGETATION:(B)(C)(D)(E)TRAFFIC & LIGHTINGNo.SignsTR-1Street Light System ( # of Poles)TR-2Traffic SignalTR-3Traffic Signal ModificationTR-4SUBTOTAL TRAFFIC & LIGHTING:(B)(C)(D)(E)WRITE-IN-ITEMSSUBTOTAL WRITE-IN ITEMS:STREET AND SITE IMPROVEMENTS SUBTOTAL:2,380.004,928.00155,540.00SALES TAX @ 10%238.00492.8015,554.00STREET AND SITE IMPROVEMENTS TOTAL:2,618.005,420.80171,094.00(B)(C)(D)(E)Page 6 of 14Ref 8-H Bond Quantity WorksheetSECTION II.b TRANSPORTATIONUnit Prices Updated: 06/14/2016Version: 04/26/2017Printed 12/20/2017
CED Permit #:########ExistingFuture PublicPrivateRight-of-WayImprovementsImprovements(D) (E)DescriptionNo. Unit PriceUnitQuant.CostQuant.CostQuant.CostQuant.CostDRAINAGE (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/DD-126.00$ SY* (CBs include frame and lid)BeehiveD-290.00$ EachThrough-curb Inlet FrameworkD-3400.00$ EachCB Type ID-41,500.00$ Each11,500.0011,500.001015,000.00CB Type ILD-51,750.00$ EachCB Type II, 48" diameterD-62,300.00$ Each for additional depth over 4' D-7480.00$ FTCB Type II, 54" diameterD-82,500.00$ Each for additional depth over 4'D-9495.00$ FTCB Type II, 60" diameterD-102,800.00$ Each for additional depth over 4'D-11600.00$ FTCB Type II, 72" diameterD-126,000.00$ Each for additional depth over 4'D-13850.00$ FTCB Type II, 96" diameterD-1414,000.00$ Each for additional depth over 4'D-15925.00$ FTTrash Rack, 12"D-16350.00$ EachTrash Rack, 15"D-17410.00$ EachTrash Rack, 18"D-18480.00$ EachTrash Rack, 21"D-19550.00$ EachCleanout, PVC, 4"D-20150.00$ EachCleanout, PVC, 6"D-21170.00$ EachCleanout, PVC, 8"D-22200.00$ EachCulvert, PVC, 4" D-2310.00$ LFCulvert, PVC, 6" D-2413.00$ LFCulvert, PVC, 8" D-2515.00$ LFCulvert, PVC, 12" D-2623.00$ LF15345.0066015,180.00Culvert, PVC, 15" D-2735.00$ LFCulvert, PVC, 18" D-2841.00$ LFCulvert, PVC, 24"D-2956.00$ LFCulvert, PVC, 30" D-3078.00$ LFCulvert, PVC, 36" D-31130.00$ LFCulvert, CMP, 8"D-3219.00$ LFCulvert, CMP, 12"D-3329.00$ LFSUBTOTAL THIS PAGE:1,500.001,845.0030,180.00(B)(C)(D)(E)Quantity Remaining (Bond Reduction) (B)(C)SITE IMPROVEMENT BOND QUANTITY WORKSHEETFOR DRAINAGE AND STORMWATER FACILITIESPage 7 of 14Ref 8-H Bond Quantity WorksheetSECTION II.c DRAINAGEUnit Prices Updated: 06/14/2016Version: 04/26/2017Printed 12/20/2017
CED Permit #:########ExistingFuture PublicPrivateRight-of-WayImprovementsImprovements(D) (E)DescriptionNo. Unit PriceUnitQuant.CostQuant.CostQuant.CostQuant.CostQuantity Remaining (Bond Reduction) (B)(C)SITE IMPROVEMENT BOND QUANTITY WORKSHEETFOR DRAINAGE AND STORMWATER FACILITIESDRAINAGE (Continued)Culvert, CMP, 15"D-3435.00$ LFCulvert, CMP, 18"D-3541.00$ LFCulvert, CMP, 24"D-3656.00$ LFCulvert, CMP, 30"D-3778.00$ LFCulvert, CMP, 36"D-38130.00$ LFCulvert, CMP, 48"D-39190.00$ LFCulvert, CMP, 60"D-40270.00$ LFCulvert, CMP, 72"D-41350.00$ LFCulvert, Concrete, 8"D-4242.00$ LFCulvert, Concrete, 12"D-4348.00$ LFCulvert, Concrete, 15"D-4478.00$ LFCulvert, Concrete, 18"D-4548.00$ LFCulvert, Concrete, 24"D-4678.00$ LFCulvert, Concrete, 30"D-47125.00$ LFCulvert, Concrete, 36"D-48150.00$ LFCulvert, Concrete, 42"D-49175.00$ LFCulvert, Concrete, 48"D-50205.00$ LFCulvert, CPE Triple Wall, 6" D-5114.00$ LFCulvert, CPE Triple Wall, 8" D-5216.00$ LFCulvert, CPE Triple Wall, 12" D-5324.00$ LFCulvert, CPE Triple Wall, 15" D-5435.00$ LFCulvert, CPE Triple Wall, 18" D-5541.00$ LFCulvert, CPE Triple Wall, 24" D-5656.00$ LFCulvert, CPE Triple Wall, 30" D-5778.00$ LFCulvert, CPE Triple Wall, 36" D-58130.00$ LFCulvert, LCPE, 6"D-5960.00$ LFCulvert, LCPE, 8"D-6072.00$ LFCulvert, LCPE, 12"D-6184.00$ LFCulvert, LCPE, 15"D-6296.00$ LFCulvert, LCPE, 18"D-63108.00$ LFCulvert, LCPE, 24"D-64120.00$ LFCulvert, LCPE, 30"D-65132.00$ LFCulvert, LCPE, 36"D-66144.00$ LFCulvert, LCPE, 48"D-67156.00$ LFCulvert, LCPE, 54"D-68168.00$ LFSUBTOTAL THIS PAGE:(B)(C)(D)(E)Page 8 of 14Ref 8-H Bond Quantity WorksheetSECTION II.c DRAINAGEUnit Prices Updated: 06/14/2016Version: 04/26/2017Printed 12/20/2017
CED Permit #:########ExistingFuture PublicPrivateRight-of-WayImprovementsImprovements(D) (E)DescriptionNo. Unit PriceUnitQuant.CostQuant.CostQuant.CostQuant.CostQuantity Remaining (Bond Reduction) (B)(C)SITE IMPROVEMENT BOND QUANTITY WORKSHEETFOR DRAINAGE AND STORMWATER FACILITIESDRAINAGE (Continued)Culvert, LCPE, 60"D-69180.00$ LFCulvert, LCPE, 72"D-70192.00$ LFCulvert, HDPE, 6"D-7142.00$ LFCulvert, HDPE, 8"D-7242.00$ LFCulvert, HDPE, 12"D-7374.00$ LF17012,580.00Culvert, HDPE, 15"D-74106.00$ LFCulvert, HDPE, 18"D-75138.00$ LFCulvert, HDPE, 24"D-76221.00$ LFCulvert, HDPE, 30"D-77276.00$ LFCulvert, HDPE, 36"D-78331.00$ LFCulvert, HDPE, 48"D-79386.00$ LFCulvert, HDPE, 54"D-80441.00$ LFCulvert, HDPE, 60"D-81496.00$ LFCulvert, HDPE, 72"D-82551.00$ LFPipe, Polypropylene, 6"D-8384.00$ LFPipe, Polypropylene, 8"D-8489.00$ LFPipe, Polypropylene, 12"D-8595.00$ LFPipe, Polypropylene, 15"D-86100.00$ LFPipe, Polypropylene, 18"D-87106.00$ LFPipe, Polypropylene, 24"D-88111.00$ LFPipe, Polypropylene, 30"D-89119.00$ LFPipe, Polypropylene, 36"D-90154.00$ LFPipe, Polypropylene, 48"D-91226.00$ LFPipe, Polypropylene, 54"D-92332.00$ LFPipe, Polypropylene, 60"D-93439.00$ LFPipe, Polypropylene, 72"D-94545.00$ LFCulvert, DI, 6"D-9561.00$ LFCulvert, DI, 8"D-9684.00$ LFCulvert, DI, 12"D-97106.00$ LFCulvert, DI, 15"D-98129.00$ LFCulvert, DI, 18"D-99152.00$ LFCulvert, DI, 24"D-100175.00$ LFCulvert, DI, 30"D-101198.00$ LFCulvert, DI, 36"D-102220.00$ LFCulvert, DI, 48"D-103243.00$ LFCulvert, DI, 54"D-104266.00$ LFCulvert, DI, 60"D-105289.00$ LFCulvert, DI, 72"D-106311.00$ LFSUBTOTAL THIS PAGE:12,580.00(B)(C)(D)(E)Page 9 of 14Ref 8-H Bond Quantity WorksheetSECTION II.c DRAINAGEUnit Prices Updated: 06/14/2016Version: 04/26/2017Printed 12/20/2017
CED Permit #:########ExistingFuture PublicPrivateRight-of-WayImprovementsImprovements(D) (E)DescriptionNo. Unit PriceUnitQuant.CostQuant.CostQuant.CostQuant.CostQuantity Remaining (Bond Reduction) (B)(C)SITE IMPROVEMENT BOND QUANTITY WORKSHEETFOR DRAINAGE AND STORMWATER FACILITIESSpecialty Drainage ItemsDitching SD-19.50$ CYFlow Dispersal Trench (1,436 base+)SD-328.00$ LF French Drain (3' depth)SD-426.00$ LFGeotextile, laid in trench, polypropyleneSD-53.00$ SYMid-tank Access Riser, 48" dia, 6' deepSD-62,000.00$ Each12,000.00Pond Overflow SpillwaySD-716.00$ SYRestrictor/Oil Separator, 12"SD-81,150.00$ EachRestrictor/Oil Separator, 15"SD-91,350.00$ EachRestrictor/Oil Separator, 18"SD-101,700.00$ EachRiprap, placedSD-1142.00$ CYTank End Reducer (36" diameter)SD-121,200.00$ EachInfiltration pond testingSD-13125.00$ HRPermeable PavementSD-14Permeable Concrete SidewalkSD-15Culvert, Box __ ft x __ ftSD-16SUBTOTAL SPECIALTY DRAINAGE ITEMS:2,000.00(B)(C)(D)(E)STORMWATER FACILITIES (Include Flow Control and Water Quality Facility Summary Sheet and Sketch)Detention PondSF-1Each Detention TankSF-2Each Detention VaultSF-375,000.00$ Each 175,000.00Infiltration PondSF-4Each Infiltration TankSF-5Each Infiltration VaultSF-6Each Infiltration TrenchesSF-7Each Basic Biofiltration SwaleSF-8Each Wet Biofiltration SwaleSF-9Each WetpondSF-10Each WetvaultSF-11Each Sand FilterSF-12Each Sand Filter VaultSF-13Each Linear Sand FilterSF-14Each Proprietary FacilitySF-15Each Bioretention FacilitySF-16Each SUBTOTAL STORMWATER FACILITIES:75,000.00(B)(C)(D)(E)Page 10 of 14Ref 8-H Bond Quantity WorksheetSECTION II.c DRAINAGEUnit Prices Updated: 06/14/2016Version: 04/26/2017Printed 12/20/2017
CED Permit #:########ExistingFuture PublicPrivateRight-of-WayImprovementsImprovements(D) (E)DescriptionNo. Unit PriceUnitQuant.CostQuant.CostQuant.CostQuant.CostQuantity Remaining (Bond Reduction) (B)(C)SITE IMPROVEMENT BOND QUANTITY WORKSHEETFOR DRAINAGE AND STORMWATER FACILITIESWRITE-IN-ITEMS (INCLUDE ON-SITE BMPs)WI-1WI-2WI-3WI-4WI-5WI-6WI-7WI-8WI-9WI-10WI-11WI-12WI-13WI-14WI-15SUBTOTAL WRITE-IN ITEMS:DRAINAGE AND STORMWATER FACILITIES SUBTOTAL:1,500.001,845.00119,760.00SALES TAX @ 10%150.00184.5011,976.00DRAINAGE AND STORMWATER FACILITIES TOTAL:1,650.002,029.50131,736.00(B) (C) (D) (E)Page 11 of 14Ref 8-H Bond Quantity WorksheetSECTION II.c DRAINAGEUnit Prices Updated: 06/14/2016Version: 04/26/2017Printed 12/20/2017
CED Permit #:########ExistingFuture PublicPrivateRight-of-WayImprovementsImprovements(D) (E)DescriptionNo. Unit PriceUnitQuant.CostQuant.CostQuant.CostQuant.CostConnection to Existing WatermainW-12,000.00$ Each24,000.00Ductile Iron Watermain, CL 52, 4 Inch DiameterW-250.00$ LFDuctile Iron Watermain, CL 52, 6 Inch DiameterW-356.00$ LFDuctile Iron Watermain, CL 52, 8 Inch DiameterW-460.00$ LF27516,500.00Ductile Iron Watermain, CL 52, 10 Inch DiameterW-570.00$ LF95066,500.00Ductile Iron Watermain, CL 52, 12 Inch DiameterW-680.00$ LFGate Valve, 4 inch DiameterW-7500.00$ EachGate Valve, 6 inch DiameterW-8700.00$ EachGate Valve, 8 Inch DiameterW-9800.00$ EachGate Valve, 10 Inch DiameterW-101,000.00$ Each33,000.00Gate Valve, 12 Inch DiameterW-111,200.00$ EachFire Hydrant AssemblyW-124,000.00$ Each520,000.00Permanent Blow-Off AssemblyW-131,800.00$ EachAir-Vac Assembly, 2-Inch DiameterW-142,000.00$ EachAir-Vac Assembly, 1-Inch DiameterW-151,500.00$ EachCompound Meter Assembly 3-inch DiameterW-168,000.00$ Each18,000.00Compound Meter Assembly 4-inch DiameterW-179,000.00$ EachCompound Meter Assembly 6-inch DiameterW-1810,000.00$ EachPressure Reducing Valve Station 8-inch to 10-inchW-1920,000.00$ Each120,000.00WATER SUBTOTAL:138,000.00SALES TAX @ 10%13,800.00WATER TOTAL:151,800.00(B) (C) (D) (E)SITE IMPROVEMENT BOND QUANTITY WORKSHEETFOR WATERQuantity Remaining (Bond Reduction) (B)(C)Page 12 of 14Ref 8-H Bond Quantity WorksheetSECTION II.d WATERUnit Prices Updated: 06/14/2016Version: 04/26/2017Printed 12/20/2017
CED Permit #:########ExistingFuture PublicPrivateRight-of-WayImprovementsImprovements(D) (E)DescriptionNo. Unit PriceUnitQuant.CostQuant.CostQuant.CostQuant.CostClean OutsSS-11,000.00$ Each33,000.00Grease Interceptor, 500 gallonSS-28,000.00$ EachGrease Interceptor, 1000 gallonSS-310,000.00$ Each110,000.00Grease Interceptor, 1500 gallonSS-415,000.00$ EachSide Sewer Pipe, PVC. 4 Inch DiameterSS-580.00$ LFSide Sewer Pipe, PVC. 6 Inch DiameterSS-695.00$ LF15014,250.00Sewer Pipe, PVC, 8 inch DiameterSS-7105.00$ LF87591,875.00Sewer Pipe, PVC, 12 Inch DiameterSS-8120.00$ LFSewer Pipe, DI, 8 inch DiameterSS-9115.00$ LFSewer Pipe, DI, 12 Inch DiameterSS-10130.00$ LFManhole, 48 Inch DiameterSS-116,000.00$ Each424,000.00Manhole, 54 Inch DiameterSS-136,500.00$ EachManhole, 60 Inch DiameterSS-157,500.00$ EachManhole, 72 Inch DiameterSS-178,500.00$ EachManhole, 96 Inch DiameterSS-1914,000.00$ EachPipe, C-900, 12 Inch DiameterSS-21180.00$ LFOutside DropSS-241,500.00$ LSInside DropSS-251,000.00$ LSSewer Pipe, PVC, ____ Inch DiameterSS-26Lift Station (Entire System)SS-27LSSANITARY SEWER SUBTOTAL:143,125.00SALES TAX @ 10%14,312.50SANITARY SEWER TOTAL:157,437.50(B) (C) (D) (E)SITE IMPROVEMENT BOND QUANTITY WORKSHEETFOR SANITARY SEWERQuantity Remaining (Bond Reduction) (B)(C)Page 13 of 14Ref 8-H Bond Quantity WorksheetSECTION II.e SANITARY SEWERUnit Prices Updated: 06/14/2016Version: 04/26/2017Printed 12/20/2017
Planning Division |1055 South Grady Way – 6th Floor | Renton, WA 98057 (425) 430-7200Date:Name:Project Name: PE Registration No:CED Plan # (LUA):Firm Name:CED Permit # (U):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)2,618.00$ Future Public Improvements Subtotal(c)5,420.80$ Stormwater & Drainage Facilities (Public & Private) Subtotal(d)(d)135,415.50$ (e)(f)Site RestorationCivil Construction PermitMaintenance Bond28,690.86$ Bond Reduction2Construction Permit Bond Amount 3Minimum Bond Amount is $10,000.001 Estimate Only - May involve multiple and variable components, which will be established on an individual basis by Development Engineering.2 The City of Renton allows one request only for bond reduction prior to the maintenance period. Reduction of not more than 70% of the original bond amount, provided that the remaining 30% willcover all remaining items to be constructed. 3 Required Bond Amounts are subject to review and modification by Development Engineering.* Note: The word BOND as used in this document means any financial guarantee acceptable to the City of Renton.** Note: All prices include labor, equipment, materials, overhead and profit. EST1((b) + (c) + (d)) x 20%-$ MAINTENANCE BOND */**(after final acceptance of construction)17,839.80$ 2,618.00$ 139,342.50$ 17,839.80$ -$ 135,415.50$ -$ 157,182.30$ P (a) x 100%SITE IMPROVEMENT BOND QUANTITY WORKSHEET BOND CALCULATIONS12/20/2017Whitney Holm48811SCJ AllianceR((b x 150%) + (d x 100%))S(e) x 150% + (f) x 100%Bond Reduction: Existing Right-of-Way Improvements (Quantity Remaining)2Bond Reduction: Stormwater & Drainage Facilities (Quantity Remaining)2T(P +R - S)Prepared by:Project InformationCONSTRUCTION BOND AMOUNT */**(prior to permit issuance)360.352.1465whitney.holm@scjalliance.comRenton Senior Housing##-######(Unknown) XXX Talbot Road SE312305-9067, 312305-9094FOR APPROVAL########8730 Tallon Lane NE, Suite 200 Lacey WA 98516Page 14 of 14Ref 8-H Bond Quantity WorksheetSECTION III. BOND WORKSHEETUnit Prices Updated: 06/14/2016Version: 04/26/2017Printed 12/20/2017
APPENDIX J
OPERATIONS AND MAINTENANCE MANUAL
Renton Senior Housing Maintenance Plan
Maintenance Program
Cover Sheet
Inspection Period:
Number of Sheets Attached:
Date Inspected:
Inspector’s Signature:
The following pages contain maintenance needs for most of the components that are part of your
drainage system, as well as for some components that you may not have. Let the City know if there are
any components that are missing from these pages. Ignore the requirements that do not apply to your
system. You should plan to complete a checklist for all system components on the following schedule:
(M) Monthly from October (or November) through April
(A) Once in late summer (preferably September)
(C) Once in mid summer (late July or early August)
(S) After any major storm (use 1 inch in 24 hours as a guideline)
(B) Biannually (twice per year - refer to individual checklist for timing)
(Q) Quarterly
Use photocopies of these pages and check off the problems you looked for each time you did an
inspection. Add comments on problems found and actions taken. Keep these “checked" sheets in your
files, as they will be used to write your annual report. Some items do not need to be looked at every
time an inspection is done.
The facility - specific maintenance standards contained in this section are intended to be conditions for
determining if maintenance actions are required as identified through inspection. They are not intended
to be measures of the facility's required condition at all times between inspections. In other words,
exceedance of these conditions at any time between inspections and/or maintenance does not
automatically constitute a violation of these standards. However, based upon inspection observations,
the inspection and maintenance schedules shall be adjusted to minimize the length of time that a facility
is in a condition that requires a maintenance action.
A TESC certified professional will be designated prior to construction and will conduct inspections as well
as identify a maintenance program for any erosion control measures.
Renton Senior Housing Maintenance Plan
Maintenance covenants shall include the maintenance standards specified by Appendix A in 2017 City of
Renton Surface Water Design Manual. Included is a list of maintenance activities and proposed
inspection intervals for each element of the private stormwater system, and a guarantee that any
maintenance necessary for any element of the stormwater system will be performed to the standards
specified by the Manual and within the following schedule:
1. Within one year for wet pool facilities and retention/detention ponds;
2. Within six months for typical maintenance;
3. Within nine months for maintenance requiring re-vegetation;
4. Within two years for maintenance that requires capital construction of less than $25,000.
APPENDIX A MAINTENANCE REQUIREMENTS FOR STORMWATER FACILITIES AND ON-SITE BMPS
12/12/2016 2017 City of Renton Surface Water Design Manual
A-6
NO. 3 – DETENTION TANKS AND VAULTS
MAINTENANCE
COMPONENT
DEFECT OR
PROBLEM
CONDITIONS WHEN
MAINTENANCE IS NEEDED
RESULTS EXPECTED WHEN
MAINTENANCE IS PERFORMED
Site Trash and debris Any trash and debris which exceed 1 cubic
foot per 1,000 square feet (this is about
equal to the amount of trash it would take
to fill up one standard size office garbage
can). In general, there should be no visual
evidence of dumping.
Trash and debris cleared from site.
Noxious weeds Any noxious or nuisance vegetation which
may constitute a hazard to City personnel
or the public.
Noxious and nuisance vegetation removed
according to applicable regulations. No
danger of noxious vegetation where City
personnel or the public might normally be.
Contaminants and
pollution
Any evidence of contaminants or pollution
such as oil, gasoline, concrete slurries or
paint.
Materials removed and disposed of
according to applicable regulations. Source
control BMPs implemented if appropriate.
No contaminants present other than a
surface oil film.
Excessive growth of
grass/groundcover
Grass or groundcover exceeds 18 inches
in height.
Grass or groundcover mowed to a height
no greater than 6 inches.
Tank or Vault
Storage Area
Trash and debris Any trash and debris accumulated in vault
or tank (includes floatables and non-
floatables).
No trash or debris in vault.
Sediment
accumulation
Accumulated sediment depth exceeds
10% of the diameter of the storage area for
½ length of storage vault or any point
depth exceeds 15% of diameter. Example:
72-inch storage tank would require
cleaning when sediment reaches depth of
7 inches for more than ½ length of tank.
All sediment removed from storage area.
Tank Structure Plugged air vent Any blockage of the vent. Tank or vault freely vents.
Tank bent out of
shape
Any part of tank/pipe is bent out of shape
more than 10% of its design shape.
Tank repaired or replaced to design.
Gaps between
sections, damaged
joints or cracks or
tears in wall
A gap wider than ½-inch at the joint of any
tank sections or any evidence of soil
particles entering the tank at a joint or
through a wall.
No water or soil entering tank through
joints or walls.
Vault Structure Damage to wall,
frame, bottom, and/or
top slab
Cracks wider than ½-inch, any evidence of
soil entering the structure through cracks
or qualified inspection personnel
determines that the vault is not structurally
sound.
Vault is sealed and structurally sound.
Inlet/Outlet Pipes Sediment
accumulation
Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment.
Trash and debris Trash and debris accumulated in
inlet/outlet pipes (includes floatables and
non-floatables).
No trash or debris in pipes.
Damaged inlet/outlet
pipes
Cracks wider than ½-inch at the joint of the
inlet/outlet pipes or any evidence of soil
entering at the joints of the inlet/outlet
pipes.
No cracks more than ¼-inch wide at the
joint of the inlet/outlet pipe.
Access Manhole Cover/lid not in place Cover/lid is missing or only partially in
place. Any open manhole requires
immediate maintenance.
Manhole access covered.
APPENDIX A MAINTENANCE REQUIREMENTS FOR STORMWATER FACILITIES AND ON-SITE BMPS
2017 City of Renton Surface Water Design Manual 12/12/2016
A-7
NO. 3 – DETENTION TANKS AND VAULTS
MAINTENANCE
COMPONENT
DEFECT OR
PROBLEM
CONDITIONS WHEN
MAINTENANCE IS NEEDED
RESULTS EXPECTED WHEN
MAINTENANCE IS PERFORMED
Access Manhole
(cont.)
Locking mechanism
not working
Mechanism cannot be opened by one
maintenance person with proper tools.
Bolts cannot be seated. Self-locking
cover/lid does not work.
Mechanism opens with proper tools.
Cover/lid difficult to
remove
One maintenance person cannot remove
cover/lid after applying 80 lbs of lift.
Cover/lid can be removed and reinstalled
by one maintenance person.
Ladder rungs unsafe Missing rungs, misalignment, rust, or
cracks.
Ladder meets design standards. Allows
maintenance person safe access.
Large access
doors/plate
Damaged or difficult
to open
Large access doors or plates cannot be
opened/removed using normal equipment.
Replace or repair access door so it can
opened as designed.
Gaps, doesn't cover
completely
Large access doors not flat and/or access
opening not completely covered.
Doors close flat; covers access opening
completely.
Lifting rings missing,
rusted
Lifting rings not capable of lifting weight of
door or plate.
Lifting rings sufficient to lift or remove door
or plate.
APPENDIX A MAINTENANCE REQUIREMENTS FOR STORMWATER FACILITIES AND ON-SITE BMPS
12/12/2016 2017 City of Renton Surface Water Design Manual
A-8
NO. 4 – CONTROL STRUCTURE/FLOW RESTRICTOR
MAINTENANCE
COMPONENT
DEFECT OR
PROBLEM
CONDITION WHEN MAINTENANCE
IS NEEDED
RESULTS EXPECTED WHEN
MAINTENANCE IS PERFORMED
Structure Trash and debris Trash or debris of more than ½ cubic foot
which is located immediately in front of the
structure opening or is blocking capacity of
the structure by more than 10%.
No Trash or debris blocking or potentially
blocking entrance to structure.
Trash or debris in the structure that
exceeds 1/3 the depth from the bottom of
basin to invert the lowest pipe into or out of
the basin.
No trash or debris in the structure.
Deposits of garbage exceeding 1 cubic
foot in volume.
No condition present which would attract or
support the breeding of insects or rodents.
Sediment
accumulation
Sediment exceeds 60% of the depth from
the bottom of the structure to the invert of
the lowest pipe into or out of the structure
or the bottom of the FROP-T section or is
within 6 inches of the invert of the lowest
pipe into or out of the structure or the
bottom of the FROP-T section.
Sump of structure contains no sediment.
Damage to frame
and/or top slab
Corner of frame extends more than ¾ inch
past curb face into the street (If
applicable).
Frame is even with curb.
Top slab has holes larger than 2 square
inches or cracks wider than ¼ inch.
Top slab is free of holes and cracks.
Frame not sitting flush on top slab, i.e.,
separation of more than ¾ inch of the
frame from the top slab.
Frame is sitting flush on top slab.
Cracks in walls or
bottom
Cracks wider than ½ inch and longer than
3 feet, any evidence of soil particles
entering structure through cracks, or
maintenance person judges that structure
is unsound.
Structure is sealed and structurally sound.
Cracks wider than ½ inch and longer than
1 foot at the joint of any inlet/outlet pipe or
any evidence of soil particles entering
structure through cracks.
No cracks more than 1/4 inch wide at the
joint of inlet/outlet pipe.
Settlement/
misalignment
Structure has settled more than 1 inch or
has rotated more than 2 inches out of
alignment.
Basin replaced or repaired to design
standards.
Damaged pipe joints Cracks wider than ½-inch at the joint of the
inlet/outlet pipes or any evidence of soil
entering the structure at the joint of the
inlet/outlet pipes.
No cracks more than ¼-inch wide at the
joint of inlet/outlet pipes.
Contaminants and
pollution
Any evidence of contaminants or pollution
such as oil, gasoline, concrete slurries or
paint.
Materials removed and disposed of
according to applicable regulations. Source
control BMPs implemented if appropriate.
No contaminants present other than a
surface oil film.
Ladder rungs missing
or unsafe
Ladder is unsafe due to missing rungs,
misalignment, rust, cracks, or sharp edges.
Ladder meets design standards and allows
maintenance person safe access.
FROP-T Section Damaged FROP-T T section is not securely attached to
structure wall and outlet pipe structure
should support at least 1,000 lbs of up or
down pressure.
T section securely attached to wall and
outlet pipe.
Structure is not in upright position (allow up
to 10% from plumb).
Structure in correct position.
APPENDIX A MAINTENANCE REQUIREMENTS FOR STORMWATER FACILITIES AND ON-SITE BMPS
2017 City of Renton Surface Water Design Manual 12/12/2016
A-9
NO. 4 – CONTROL STRUCTURE/FLOW RESTRICTOR
MAINTENANCE
COMPONENT
DEFECT OR
PROBLEM
CONDITION WHEN MAINTENANCE
IS NEEDED
RESULTS EXPECTED WHEN
MAINTENANCE IS PERFORMED
FROP-T Section
(cont.)
Damaged FROP-T
(cont.)
Connections to outlet pipe are not
watertight or show signs of deteriorated
grout.
Connections to outlet pipe are water tight;
structure repaired or replaced and works
as designed.
Any holes—other than designed holes—in
the structure.
Structure has no holes other than designed
holes.
Cleanout Gate Damaged or missing
cleanout gate
Cleanout gate is missing. Replace cleanout gate.
Cleanout gate is not watertight. Gate is watertight and works as designed.
Gate cannot be moved up and down by
one maintenance person.
Gate moves up and down easily and is
watertight.
Chain/rod leading to gate is missing or
damaged.
Chain is in place and works as designed.
Orifice Plate Damaged or missing
orifice plate
Control device is not working properly due
to missing, out of place, or bent orifice
plate.
Plate is in place and works as designed.
Obstructions to orifice
plate
Any trash, debris, sediment, or vegetation
blocking the plate.
Plate is free of all obstructions and works
as designed.
Overflow Pipe Obstructions to
overflow pipe
Any trash or debris blocking (or having the
potential of blocking) the overflow pipe.
Pipe is free of all obstructions and works
as designed.
Deformed or
damaged lip of
overflow pipe
Lip of overflow pipe is bent or deformed. Overflow pipe does not allow overflow at
an elevation lower than design
Inlet/Outlet Pipe Sediment
accumulation
Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment.
Trash and debris Trash and debris accumulated in
inlet/outlet pipes (includes floatables and
non-floatables).
No trash or debris in pipes.
Damaged inlet/outlet
pipe
Cracks wider than ½-inch at the joint of the
inlet/outlet pipes or any evidence of soil
entering at the joints of the inlet/outlet
pipes.
No cracks more than ¼-inch wide at the
joint of the inlet/outlet pipe.
Metal Grates
(If applicable)
Unsafe grate opening Grate with opening wider than 7/8 inch. Grate opening meets design standards.
Trash and debris Trash and debris that is blocking more
than 20% of grate surface.
Grate free of trash and debris. footnote to
guidelines for disposal
Damaged or missing
grate
Grate missing or broken member(s) of the
grate.
Grate is in place and meets design
standards.
Manhole Cover/Lid Cover/lid not in place Cover/lid is missing or only partially in
place. Any open structure requires
urgent maintenance.
Cover/lid protects opening to structure.
Locking mechanism
not working
Mechanism cannot be opened by one
maintenance person with proper tools.
Bolts cannot be seated. Self-locking
cover/lid does not work.
Mechanism opens with proper tools.
Cover/lid difficult to
remove
One maintenance person cannot remove
cover/lid after applying 80 lbs. of lift.
Cover/lid can be removed and reinstalled
by one maintenance person.
APPENDIX A MAINTENANCE REQUIREMENTS FOR STORMWATER FACILITIES AND ON-SITE BMPS
12/12/2016 2017 City of Renton Surface Water Design Manual
A-10
NO. 5 – CATCH BASINS AND MANHOLES
MAINTENANCE
COMPONENT
DEFECT OR
PROBLEM
CONDITION WHEN MAINTENANCE
IS NEEDED
RESULTS EXPECTED WHEN
MAINTENANCE IS PERFORMED
Structure Sediment
accumulation
Sediment exceeds 60% of the depth from
the bottom of the catch basin to the invert
of the lowest pipe into or out of the catch
basin or is within 6 inches of the invert of
the lowest pipe into or out of the catch
basin.
Sump of catch basin contains no sediment.
Trash and debris Trash or debris of more than ½ cubic foot
which is located immediately in front of the
catch basin opening or is blocking capacity
of the catch basin by more than 10%.
No Trash or debris blocking or potentially
blocking entrance to catch basin.
Trash or debris in the catch basin that
exceeds 1/3 the depth from the bottom of
basin to invert the lowest pipe into or out of
the basin.
No trash or debris in the catch basin.
Dead animals or vegetation that could
generate odors that could cause
complaints or dangerous gases (e.g.,
methane).
No dead animals or vegetation present
within catch basin.
Deposits of garbage exceeding 1 cubic
foot in volume.
No condition present which would attract or
support the breeding of insects or rodents.
Damage to frame
and/or top slab
Corner of frame extends more than ¾ inch
past curb face into the street (If
applicable).
Frame is even with curb.
Top slab has holes larger than 2 square
inches or cracks wider than ¼ inch.
Top slab is free of holes and cracks.
Frame not sitting flush on top slab, i.e.,
separation of more than ¾ inch of the
frame from the top slab.
Frame is sitting flush on top slab.
Cracks in walls or
bottom
Cracks wider than ½ inch and longer than
3 feet, any evidence of soil particles
entering catch basin through cracks, or
maintenance person judges that catch
basin is unsound.
Catch basin is sealed and is structurally
sound.
Cracks wider than ½ inch and longer than
1 foot at the joint of any inlet/outlet pipe or
any evidence of soil particles entering
catch basin through cracks.
No cracks more than 1/4 inch wide at the
joint of inlet/outlet pipe.
Settlement/
misalignment
Catch basin has settled more than 1 inch
or has rotated more than 2 inches out of
alignment.
Basin replaced or repaired to design
standards.
Damaged pipe joints Cracks wider than ½-inch at the joint of the
inlet/outlet pipes or any evidence of soil
entering the catch basin at the joint of the
inlet/outlet pipes.
No cracks more than ¼-inch wide at the
joint of inlet/outlet pipes.
Contaminants and
pollution
Any evidence of contaminants or pollution
such as oil, gasoline, concrete slurries or
paint.
Materials removed and disposed of
according to applicable regulations. Source
control BMPs implemented if appropriate.
No contaminants present other than a
surface oil film.
Inlet/Outlet Pipe Sediment
accumulation
Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment.
Trash and debris Trash and debris accumulated in
inlet/outlet pipes (includes floatables and
non-floatables).
No trash or debris in pipes.
APPENDIX A MAINTENANCE REQUIREMENTS FOR STORMWATER FACILITIES AND ON-SITE BMPS
2017 City of Renton Surface Water Design Manual 12/12/2016
A-11
NO. 5 – CATCH BASINS AND MANHOLES
MAINTENANCE
COMPONENT
DEFECT OR
PROBLEM
CONDITION WHEN MAINTENANCE
IS NEEDED
RESULTS EXPECTED WHEN
MAINTENANCE IS PERFORMED
Inlet/Outlet Pipe
(cont.)
Damaged inlet/outlet
pipe
Cracks wider than ½-inch at the joint of the
inlet/outlet pipes or any evidence of soil
entering at the joints of the inlet/outlet
pipes.
No cracks more than ¼-inch wide at the
joint of the inlet/outlet pipe.
Metal Grates
(Catch Basins)
Unsafe grate opening Grate with opening wider than 7/8 inch. Grate opening meets design standards.
Trash and debris Trash and debris that is blocking more
than 20% of grate surface.
Grate free of trash and debris. footnote to
guidelines for disposal
Damaged or missing
grate
Grate missing or broken member(s) of the
grate. Any open structure requires
urgent maintenance.
Grate is in place and meets design
standards.
Manhole Cover/Lid Cover/lid not in place Cover/lid is missing or only partially in
place. Any open structure requires
urgent maintenance.
Cover/lid protects opening to structure.
Locking mechanism
not working
Mechanism cannot be opened by one
maintenance person with proper tools.
Bolts cannot be seated. Self-locking
cover/lid does not work.
Mechanism opens with proper tools.
Cover/lid difficult to
remove
One maintenance person cannot remove
cover/lid after applying 80 lbs. of lift.
Cover/lid can be removed and reinstalled
by one maintenance person.
APPENDIX A MAINTENANCE REQUIREMENTS FOR STORMWATER FACILITIES AND ON-SITE BMPS
12/12/2016 2017 City of Renton Surface Water Design Manual
A-12
NO. 6 – CONVEYANCE PIPES AND DITCHES
MAINTENANCE
COMPONENT
DEFECT OR
PROBLEM
CONDITIONS WHEN
MAINTENANCE IS NEEDED
RESULTS EXPECTED WHEN
MAINTENANCE IS PERFORMED
Pipes Sediment & debris
accumulation
Accumulated sediment or debris that
exceeds 20% of the diameter of the pipe.
Water flows freely through pipes.
Vegetation/root
growth in pipe
Vegetation/roots that reduce free
movement of water through pipes.
Water flows freely through pipes.
Contaminants and
pollution
Any evidence of contaminants or pollution
such as oil, gasoline, concrete slurries or
paint.
Materials removed and disposed of
according to applicable regulations. Source
control BMPs implemented if appropriate.
No contaminants present other than a
surface oil film.
Damage to protective
coating or corrosion
Protective coating is damaged; rust or
corrosion is weakening the structural
integrity of any part of pipe.
Pipe repaired or replaced.
Damaged pipes Any dent that decreases the cross section
area of pipe by more than 20% or is
determined to have weakened structural
integrity of the pipe.
Pipe repaired or replaced.
Ditches Trash and debris Trash and debris exceeds 1 cubic foot per
1,000 square feet of ditch and slopes.
Trash and debris cleared from ditches.
Sediment
accumulation
Accumulated sediment that exceeds 20%
of the design depth.
Ditch cleaned/flushed of all sediment and
debris so that it matches design.
Noxious weeds Any noxious or nuisance vegetation which
may constitute a hazard to City personnel
or the public.
Noxious and nuisance vegetation removed
according to applicable regulations. No
danger of noxious vegetation where City
personnel or the public might normally be.
Contaminants and
pollution
Any evidence of contaminants or pollution
such as oil, gasoline, concrete slurries or
paint.
Materials removed and disposed of
according to applicable regulations. Source
control BMPs implemented if appropriate.
No contaminants present other than a
surface oil film.
Excessive vegetation
growth
Vegetation that reduces free movement of
water through ditches.
Water flows freely through ditches.
Erosion damage to
slopes
Any erosion observed on a ditch slope. Slopes are not eroding.
Rock lining out of
place or missing (If
applicable)
One layer or less of rock exists above
native soil area 5 square feet or more, any
exposed native soil.
Replace rocks to design standards.
APPENDIX A MAINTENANCE REQUIREMENTS FOR STORMWATER FACILITIES AND ON-SITE BMPS
2017 City of Renton Surface Water Design Manual 12/12/2016
A-15
NO. 9 – FENCING
MAINTENANCE
COMPONENT
DEFECT OR
PROBLEM
CONDITIONS WHEN
MAINTENANCE IS NEEDED
RESULTS EXPECTED WHEN
MAINTENANCE IS PERFORMED
Site Erosion or holes
under fence
Erosion or holes more than 4 inches high
and 12-18 inches wide permitting access
through an opening under a fence.
No access under the fence.
Wood Posts, Boards
and Cross Members
Missing or damaged
parts
Missing or broken boards, post out of
plumb by more than 6 inches or cross
members broken
No gaps on fence due to missing or broken
boards, post plumb to within 1½ inches,
cross members sound.
Weakened by rotting
or insects
Any part showing structural deterioration
due to rotting or insect damage
All parts of fence are structurally sound.
Damaged or failed
post foundation
Concrete or metal attachments
deteriorated or unable to support posts.
Post foundation capable of supporting
posts even in strong wind.
Metal Posts, Rails
and Fabric
Damaged parts Post out of plumb more than 6 inches. Post plumb to within 1½ inches.
Top rails bent more than 6 inches. Top rail free of bends greater than
1 inch.
Any part of fence (including post, top rails,
and fabric) more than 1 foot out of design
alignment.
Fence is aligned and meets design
standards.
Missing or loose tension wire. Tension wire in place and holding fabric.
Deteriorated paint or
protective coating
Part or parts that have a rusting or scaling
condition that has affected structural
adequacy.
Structurally adequate posts or parts with a
uniform protective coating.
Openings in fabric Openings in fabric are such that an 8-inch
diameter ball could fit through.
Fabric mesh openings within 50% of grid
size.
APPENDIX A MAINTENANCE REQUIREMENTS FOR STORMWATER FACILITIES AND ON-SITE BMPS
12/12/2016 2017 City of Renton Surface Water Design Manual
A-16
NO. 10 – GATES/BOLLARDS/ACCESS BARRIERS
MAINTENANCE
COMPONENT
DEFECT OR
PROBLEM
CONDITIONS WHEN
MAINTENANCE IS NEEDED
RESULTS EXPECTED WHEN
MAINTENANCE IS PERFORMED
Chain Link Fencing
Gate
Damaged or missing
members
Missing gate. Gates in place.
Broken or missing hinges such that gate
cannot be easily opened and closed by a
maintenance person.
Hinges intact and lubed. Gate is working
freely.
Gate is out of plumb more than 6 inches
and more than 1 foot out of design
alignment.
Gate is aligned and vertical.
Missing stretcher bar, stretcher bands, and
ties.
Stretcher bar, bands, and ties in place.
Locking mechanism
does not lock gate
Locking device missing, no-functioning or
does not link to all parts.
Locking mechanism prevents opening of
gate.
Openings in fabric Openings in fabric are such that an 8-inch
diameter ball could fit through.
Fabric mesh openings within 50% of grid
size.
Bar Gate Damaged or missing
cross bar
Cross bar does not swing open or closed,
is missing or is bent to where it does not
prevent vehicle access.
Cross bar swings fully open and closed
and prevents vehicle access.
Locking mechanism
does not lock gate
Locking device missing, no-functioning or
does not link to all parts.
Locking mechanism prevents opening of
gate.
Support post
damaged
Support post does not hold cross bar up. Cross bar held up preventing vehicle
access into facility.
Bollards Damaged or missing
bollards
Bollard broken, missing, does not fit into
support hole or hinge broken or missing.
No access for motorized vehicles to get
into facility.
Bollards do not lock Locking assembly or lock missing or
cannot be attached to lock bollard in place.
No access for motorized vehicles to get
into facility.
Boulders Dislodged boulders Boulders not located to prevent motorized
vehicle access.
No access for motorized vehicles to get
into facility.
Evidence of vehicles
circumventing
boulders
Motorized vehicles going around or
between boulders.
No access for motorized vehicles to get
into facility.
APPENDIX A MAINTENANCE REQUIREMENTS FOR STORMWATER FACILITIES AND ON-SITE BMPS
2017 City of Renton Surface Water Design Manual 12/12/2016
A-17
NO. 11 – GROUNDS (LANDSCAPING)
MAINTENANCE
COMPONENT
DEFECT OR
PROBLEM
CONDITIONS WHEN
MAINTENANCE IS NEEDED
RESULTS EXPECTED WHEN
MAINTENANCE IS PERFORMED
Site Trash and debris Any trash and debris which exceed 1 cubic
foot per 1,000 square feet (this is about
equal to the amount of trash it would take
to fill up one standard size office garbage
can). In general, there should be no visual
evidence of dumping.
Trash and debris cleared from site.
Noxious weeds Any noxious or nuisance vegetation which
may constitute a hazard to City personnel
or the public.
Noxious and nuisance vegetation removed
according to applicable regulations. No
danger of noxious vegetation where City
personnel or the public might normally be.
Contaminants and
pollution
Any evidence of contaminants or pollution
such as oil, gasoline, concrete slurries or
paint.
Materials removed and disposed of
according to applicable regulations. Source
control BMPs implemented if appropriate.
No contaminants present other than a
surface oil film.
Excessive growth of
grass/groundcover
Grass or groundcover exceeds 18 inches
in height.
Grass or groundcover mowed to a height
no greater than 6 inches.
Trees and Shrubs Hazard tree identified Any tree or limb of a tree identified as
having a potential to fall and cause
property damage or threaten human life. A
hazard tree identified by a qualified
arborist must be removed as soon as
possible.
No hazard trees in facility.
Damaged tree or
shrub identified
Limbs or parts of trees or shrubs that are
split or broken which affect more than 25%
of the total foliage of the tree or shrub.
Trees and shrubs with less than 5% of total
foliage with split or broken limbs.
Trees or shrubs that have been blown
down or knocked over.
No blown down vegetation or knocked over
vegetation. Trees or shrubs free of injury.
Trees or shrubs which are not adequately
supported or are leaning over, causing
exposure of the roots.
Tree or shrub in place and adequately
supported; dead or diseased trees
removed.
APPENDIX A MAINTENANCE REQUIREMENTS FOR STORMWATER FACILITIES AND ON-SITE BMPS
12/12/2016 2017 City of Renton Surface Water Design Manual
A-18
NO. 12 – ACCESS ROADS
MAINTENANCE
COMPONENT
DEFECT OR
PROBLEM
CONDITION WHEN MAINTENANCE
IS NEEDED
RESULTS EXPECTED WHEN
MAINTENANCE IS PERFORMED
Site Trash and debris Trash and debris exceeds 1 cubic foot per
1,000 square feet (i.e., trash and debris
would fill up one standards size garbage
can).
Roadway drivable by maintenance
vehicles.
Debris which could damage vehicle tires or
prohibit use of road.
Roadway drivable by maintenance
vehicles.
Contaminants and
pollution
Any evidence of contaminants or pollution
such as oil, gasoline, concrete slurries or
paint.
Materials removed and disposed of
according to applicable regulations. Source
control BMPs implemented if appropriate.
No contaminants present other than a
surface oil film.
Blocked roadway Any obstruction which reduces clearance
above road surface to less than 14 feet.
Roadway overhead clear to 14 feet high.
Any obstruction restricting the access to a
10- to 12 foot width for a distance of more
than 12 feet or any point restricting access
to less than a 10 foot width.
At least 12-foot of width on access road.
Road Surface Erosion, settlement,
potholes, soft spots,
ruts
Any surface defect which hinders or
prevents maintenance access.
Road drivable by maintenance vehicles.
Vegetation on road
surface
Trees or other vegetation prevent access
to facility by maintenance vehicles.
Maintenance vehicles can access facility.
Shoulders and
Ditches
Erosion Erosion within 1 foot of the roadway more
than 8 inches wide and 6 inches deep.
Shoulder free of erosion and matching the
surrounding road.
Weeds and brush Weeds and brush exceed 18 inches in
height or hinder maintenance access.
Weeds and brush cut to 2 inches in height
or cleared in such a way as to allow
maintenance access.
Modular Grid
Pavement
Contaminants and
pollution
Any evidence of contaminants or pollution
such as oil, gasoline, concrete slurries or
paint.
Materials removed and disposed of
according to applicable regulations. Source
control BMPs implemented if appropriate.
No contaminants present other than a
surface oil film.
Damaged or missing
blocks/grids
Access surface compacted because of
broken on missing modular block.
Access road surface restored so road
infiltrates.
APPENDIX A MAINTENANCE REQUIREMENTS FOR STORMWATER FACILITIES AND ON-SITE BMPS
2017 City of Renton Surface Water Design Manual 12/12/2016
A-31
NO. 21 – PROPRIETARY FACILITY CARTRIDGE FILTER SYSTEMS
MAINTENANCE
COMPONENT
DEFECT OR
PROBLEM
CONDITION WHEN MAINTENANCE
IS NEEDED
RESULTS EXPECTED WHEN
MAINTENANCE IS PERFORMED
In addition to the specific maintenance criteria provided below, all manufacturers’ requirements shall be followed.
Facility Documentation Update facility inspection record after each
inspection.
Maintenance records are up to date.
Provide certification of replaced filter
media.
Filter media is certified to meet
manufacturer specifications.
Site Trash and debris Any trash or debris which impairs the
function of the facility.
Trash and debris removed from facility.
Contaminants and
pollution
Any evidence of contaminants or pollution
such as oils, gasoline, concrete slurries or
paint.
Materials removed and disposed of
according to applicable regulations. Source
control BMPs implemented if appropriate.
No contaminants present other than a
surface oil film.
Life cycle Once per year. Facility is re-inspected and any needed
maintenance performed.
Vault Treatment
Area
Sediment on vault
floor
Varies – Refer to manufacturer’s
requirements.
Vault is free of sediment.
Sediment on top of
cartridges
Varies – Refer to manufacturer’s
requirements.
Vault is free of sediment.
Multiple scum lines
above top of
cartridges
Thick or multiple scum lines above top of
cartridges. Probably due to plugged
canisters or underdrain manifold.
Cause of plugging corrected, canisters
replaced if necessary.
Vault Structure Damage to wall,
frame, bottom, and/or
top slab
Cracks wider than ½-inch and any
evidence of soil particles entering the
structure through the cracks, or qualified
inspection personnel determines the vault
is not structurally sound.
Vault replaced or repaired to design
specifications.
Baffles damaged Baffles corroding, cracking warping, and/or
showing signs of failure as determined by
maintenance/inspection person.
Repair or replace baffles to specification.
Filter Media Standing water in
vault
Varies – Refer to manufacturer’s
requirements.
No standing water in vault 24 hours after a
rain event.
Short circuiting Flows do not properly enter filter
cartridges.
Flows go through filter media.
Underdrains and
Clean-Outs
Sediment and debris Underdrains or clean-outs partially plugged
or filled with sediment and/or debris.
Underdrains and clean-outs free of
sediment and debris.
Inlet/Outlet Pipe Sediment
accumulation
Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment.
Trash and debris Trash and debris accumulated in
inlet/outlet pipes (includes floatables and
non-floatables).
No trash or debris in pipes.
Damaged inlet/outlet
pipe
Cracks wider than ½-inch at the joint of the
inlet/outlet pipes or any evidence of soil
entering at the joints of the inlet/outlet
pipes.
No cracks more than ¼-inch wide at the
joint of the inlet/outlet pipe.
APPENDIX A MAINTENANCE REQUIREMENTS FOR STORMWATER FACILITIES AND ON-SITE BMPS
12/12/2016 2017 City of Renton Surface Water Design Manual
A-32
NO. 21 – PROPRIETARY FACILITY CARTRIDGE FILTER SYSTEMS
MAINTENANCE
COMPONENT
DEFECT OR
PROBLEM
CONDITION WHEN MAINTENANCE
IS NEEDED
RESULTS EXPECTED WHEN
MAINTENANCE IS PERFORMED
Access Manhole Cover/lid not in place Cover/lid is missing or only partially in
place. Any open manhole requires
immediate maintenance.
Manhole access covered.
Locking mechanism
not working
Mechanism cannot be opened by one
maintenance person with proper tools.
Bolts cannot be seated. Self-locking
cover/lid does not work.
Mechanism opens with proper tools.
Cover/lid difficult to
remove
One maintenance person cannot remove
cover/lid after applying 80 lbs of lift.
Cover/lid can be removed and reinstalled
by one maintenance person.
Ladder rungs unsafe Missing rungs, misalignment, rust, or
cracks.
Ladder meets design standards. Allows
maintenance person safe access.
Large Access
Doors/Plate
Damaged or difficult
to open
Large access doors or plates cannot be
opened/removed using normal equipment.
Replace or repair access door so it can
opened as designed.
Gaps, doesn't cover
completely
Large access doors not flat and/or access
opening not completely covered.
Doors close flat and cover access opening
completely.
Lifting Rings missing,
rusted
Lifting rings not capable of lifting weight of
door or plate.
Lifting rings sufficient to lift or remove door
or plate.
APPENDIX K
DECLARATION OF COVENANT