Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
RS_Drainage_Technical_Information_Report_170817_v1
Prepared for: Craig Krueger 15506 NE 103rd Way Redmond, WA 98052 Prepared by: CPH Consultants Jamie Schroeder, PE Colton Darden, EIT 11431 Willows RD NE, Suite 120 Redmond, WA 98052 June X, 2017 Technical Information Report Moorman Short Plat CPH Project No. 0100-16-107 Renton, WA CP H CONSULTANTS 11431 WILLOWS ROAD NE, SUITE 120 REDMOND, WA 98052 P: (425) 285-2390 | F: (425) 285-2389 www.cphconsultants.com Site Planning Civil Engineering Project Management Land Development Consulting MOORMAN SHORT PLAT RENTON, WASHINGTON TECHNICAL INFORMATION REPORT July 19, 2017 Prepared For: Bill and Claudia Moorman 8238 118th Ave Se Renton, WA 98056 Prepared By: CPH Consultants Jamie B. Schroeder, PE Colton Darden, EIT CPH Project No. 0100-16-107 Site Planning Civil Engineering Project Management Land Development Consulting FINAL TECHNICAL INFORMATION REPORT MOORMAN SHORT PLAT CITY OF RENTON, WA TABLE OF CONTENTS SECTION 1 – PROJECT OVERVIEW 3 FIGURE 1 – VICINITY MAP FIGURE 2 – TIR WORKSHEET SECTION 2 – CONDITIONS AND REQUIREMENTS SUMMARY 9 SECTION 3 – OFFSITE ANALYSIS 11 SECTION 4 – FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN 13 SECTION 5 – CONVEYANCE SYSTEM ANALYSIS AND DESIGN 17 SECTION 6 – SPECIAL REPORTS AND STUDIES 18 SECTION 7 – OTHER PERMIT 19 SECTION 8 – CSWPPP ANALYSIS AND DESIGN 20 SECTION 9 – BOND QUANTITIES, FACILITY SUMMARIES, AND DECLARATION OF COVENANT 22 SECTION 10 – OPERATIONS AND MAINTENANCE MANUAL 23 FIGURES FIGURE 3 – EXISTING SITE CONDITIONS FIGURE 4 – DEVELOPED SITE CONDITIONS FIGURE 5 – DRAINAGE BASINS APPENDICES APPENDIX A – GEOTECHNICAL REPORT & NRCS SOILS REPORT APPENDIX B – WWHM REPORT APPENDIX C – STORMFILTER DETAILS APPENDIX D – LAND USE SUMMARIES APPENDIX E – CONVEYANCE BACKWATER ANALYSIS APPENDIX F – OFFSITE ANALYSIS Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 3 SECTION 1 – PROJECT OVERVIEW This preliminary Technical Information Report (TIR) is provided to describe the stormwater conditions and proposed drainage improvements for Moorman Short Plat in Renton. The project proposes to subdivide one existing property into three (3) individual single-family residential parcels, private access road, and a landscape tract within the City of Renton. This report is provided to identify the applicable storm drainage standards and to summarize the analyses and design provisions proposed for the project to comply with the City’s surface water standards. The information provided within this TIR represents the basis of design for the storm drainage systems and surface water conditions for the project. The project is located in the southern portion of the City of Renton. The vicinity map provided below as Figure 1 illustrates the general location of the property. The street address of the project site is 2004 Shattuck Ave S (King County tax parcel no. 7222000382). Single family residential developments run along the northern, southern, and eastern edges of the site, with Shattuck Ave South located to the west of the project site. More generally, the site is located in the SE ¼ of the SE ¼ of Section 19 of Township 23 North, Range 5 East, in King County, Washington (see Vicinity Map below). Figure 1– Location/Vicinity Map Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 4 The project site is comprised of one parcel with an area of approximately 0.52 acres. One single-family home, outbuildings and a gravel driveway exist on the site, as well as several trees of varying type, age, and health condition. Figure 3 displays the existing site conditions. The proposed short plat will create a total of three (3) single-family residential lots. In addition, the project will construct half street frontage improvements along Shattuck Ave S including pavement widening, concrete curb, gutter, and sidewalk along with right-of-way dedication. The existing residence and associated privately maintained driveway will be removed with the project. Total site impervious coverage for proposed individual lots is limited to 65% by the zoning designation. The proposed site plan is shown in Figure 4. The developed site is required to provide Basic Water Quality treatment in addition to meeting the Flow Control Duration Standard (Forested Conditions) per current City of Renton surface water standards. Water quality storm volumes are proposed to be treated with a Contech Stormfilter prior to entering the on-site detention vault. A series of catch basin inlets and underground pipes will collect and convey surface water runoff easterly within proposed private access road to a detention vault for flow control. Release rates will be controlled by a three orifice control riser, and discharged to the existing stormwater system located west of the site, on the east side of Shattuck Ave S right-of-way. Storm drainage controls for this project are proposed in accordance with the 2016 City of Renton Surface Water Design Manual (CORSWDM), which is based on the 2016 King County Surface Water Design Manual (KCSWDM) with some modifications to reflect City of Renton specific requirements. On-site Soil Conditions The soils of the area are characterized generally by the Natural Resource Conservation Services (NCRS) as Beausite gravelly sandy loam (BeC). A Geotechnical Report was prepared by Terra Associates, Inc on June 2nd, 2017. As indicated by the EPA Falling Head Percolation test results in the report, infiltration is not a viable option for the site. The report has been provided in Appendix A of this report along with the NRCS soils summary. Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 5 Figure 2 – Technical Information Report (TIR) Worksheet, 2017 Surface Water Design Manual Part 1 PROJECT OWNER AND PROJECT ENGINEER Part 2 PROJECT LOCATION AND DESCRIPTION Project Owner: Bill and Claudia Moorman Project Name: Moorman Short Plat, Renton Phone: (425)478-3267 DDES Permit #: ______________________ Address: 8238 118th Ave SE Redmond, WA 98056 Location: Township: 23 N Range: 5 E Project Engineer: Jamie Schroeder Section: 19 Phone: (425) 285-2390 Site Address: 2004 Shattuck Ave S Renton, WA 98055 Part 3 TYPE OF PERMIT APPLICATION Part 4 OTHER REVIEWS AND PERMITS ■ Landuse Services DFW HPA Shoreline Subdivision / Short Subd. / UPD COE 404 Management Building Services DOE Dam Safety Structural M/F / Commercial / SFR FEMA Floodplain Rockery/Vault/ ____ Clearing and Grading COE Wetlands ESA Section 7 Right-of-Way Use Other _______________________________ Other: Part 5 PLAN AND REPORT INFORMATION Technical Information Report Site Improvement Plan (Engr. Plans) Type of Drainage Full / Targeted / Type (circle one): Full / Modified / Review (circle): Large Site Small Site Date (include revision Date (include revision dates): 7/19/2017 dates): 7/19/2017 Date of Final: Date of Final: Part 6 ADJUSTMENT APPROVALS Type (circle one): Standard / Complex / Preapplication / Experimental / Blanket Description: (include conditions in TIR Section 2) Date of Approval: _____________________________ Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 6 Figure 2 – Technical Information Report (TIR) Worksheet, 2017 Surface Water Design Manual (cont’d.) Part 7 MONITORING REQUIREMENTS Monitoring Required: Yes / No Describe: Start Date: Completion Date: Part 8 SITE COMMUNITY AND DRAINAGE BASIN Community Plan: None Special District Overlays: None Drainage Basin: Black River Stormwater Requirements: Basic Water Quality, Level 2 Flow Control Part 9 ONSITE AND ADJACENT SENSITIVE AREAS River/Stream Steep Slope Lake Erosion Hazard Wetlands Landslide Hazard Closed Depression Coal Mine Hazard Floodplain Seismic Hazard Other Habitat Protection Part 10 SOILS Soil Type Slopes Erosion Potential BeC 8% - 15% Yes High Groundwater Table (within 5 feet) Sole Source Aquifer Other __________________ Seeps/Springs Additional Sheets Attached Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 7 Figure 2 – Technical Information Report (TIR) Worksheet, 2017 Surface Water Design Manual (cont’d.) Part 11 DRAINAGE DESIGN LIMITATIONS REFERENCE LIMITATION / SITE CONSTRAINT Core 2 – Offsite Analysis Sensitive/Critical Areas SEPA Other Additional Sheets Attached Part 12 TIR SUMMARY SHEET (provide one TIR Summary Sheet per Threshold Discharge Area) Threshold Discharge Area: (name or description) Existing ditch located southwest of project site Core Requirements (all 8 apply) Discharge at Natural Location Number of Natural Discharge Locations: 1 Offsite Analysis Level: 1 / 2 / 3 Dated: 06/19/17 Flow Control Level: 1 / 2 / 3 or Exemption Number: (include a facility summary sheet) Small Site BMP’s: _TBD_____________________ Conveyance System Spill containment located at: Erosion and Sediment Control ESC Site Supervisor: TBD Contact Phone: After Hours Phone: Maintenance and Operation Responsibility: Private / Public If Private, Maintenance Log Required: Yes / No Financial Guarantees and Liability Provided: Yes / No Water Quality Type: Basic / Sens. Lake / Enhanced Basic / Bog (include facility summary sheet) or Exemption No. _______________________ Landscape Management Plan: Yes / No Special Requirements (as applicable) Area Specific Drainage Type: CDA / SDO / MDP / BP / LMP / Shared Fac / None Requirements Name: ________________________________ Floodplain/Floodway Delineation Type: Major / Minor / Exemption / None 100-year Base Flood Elevation (or range): _______________ Datum: Flood Protection Facilities Description: Source Control Describe landuse: Residential (comm./industrial landuse) Describe any structural controls: Oil Control High-use Site: Yes / No Treatment BMP: __________________________________ Maintenance Agreement: Yes / No with whom?: Other Drainage Structures Describe: Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 9 SECTION 2 – CONDITIONS AND REQUIREMENTS SUMMARY Compliance with Project Drainage Requirements The storm drainage and temporary erosion control standards for the project are established by the 2017 City of Renton Surface Water Design Manual (CORSWDM). The project requires Full Drainage Review as it exceeds the impervious threshold for Small Site Review and proposes more than 2,000 square feet of new impervious surface coverage. The CORSWDM specifies nine core and six special requirements that are to be met for this project. Compliance and/or applicability of each of these design standards are summarized below: CORSWDM Core Requirements 1. Discharge at Natural Location: The project site currently slopes and drains northwesterly towards the frontage and road. On-site storm water will maintain this existing drainage pattern and ultimate downstream discharge in accordance with current flow control standards. 2. Offsite Analysis: Summarized in Section 3 – Off-site Analysis. 3. Flow Control: The project requires compliance with the Flow Control Duration Standard (Forested Conditions) according to the COR Flow Control Map. Flow control will be provided by a dentention vault located beneath the proposed private access road in Tract A. 4. Conveyance System: The project proposes to collect on-site runoff and convey it to the proposed on- site detention vault beneath the new private access road in Tract A. These improvements are shown in Figures 4 and 5 and are described further in Section 5 – Conveyance System Analysis and Design. 5. Construction Stormwater Pollution Prevention: Temporary controls are as described in Section 8 – CSWPPP Analysis and Design. 6. Maintenance and Operations: The on-site storm drainage facilities are proposed to be publicly maintained. Refer to Appendix A of the King County Surface Water Design Manual for the Maintenance Requirements. 7. Financial Guarantees and Liability: A Bond Quantity Worksheet will be prepared for this project prior to the final engineering package. Approval and all financial guarantees will be provided by the developer. 8. Water Quality: Basic Water Quality treatment is required for the proposed project. This treatment level is to be achieved by means of a Contech Stormfilter as shown on Figures 4 and 5 and as described in Section 4 – Flow Control and Water Quality Facility Analysis and Design. 9. On-site BMPS: On-site BMPs are required for the proposed project. This is described further in Section 4. CORSWDM Special Requirements 1. Other Adopted Area-Specific Requirements: No area-specific requirements apply to this project site. Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 10 2. Flood Hazard Area Delineation: The limits of this project are not located within or in proximity to a 100-year floodplain. 3. Flood Protection Facilities: Not applicable. 4. Source Control: No additional source control is proposed. 5. Oil Control: The project is not considered a high-use area and no special oil control provisions are required. 6. Aquifer Protection Area: The limits of this project are not located within an Aquifer Protection Area (AFA). Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 11 SECTION 3 – OFF-SITE ANALYSIS Task 1: Study Area Definition and Maps The proposed project site is located at 2004 Shattuck Ave S in Renton, WA and is currently developed with one single-family home, outbuildings, and a gravel driveway. Existing ground cover consists mostly of grass with various trees of varying age and health. The existing site topography consists of slopes ranging from 0% to 15%. The existing site conditions are shown in Figure 3. Task 2: Resource Review King County iMAP and the City of Renton (COR) Maps and GIS Data were reviewed to identify any potential sensitive areas in the proximity of the project site. • Wetlands: iMap does not identify any wetlands on the project site. • Streams and 100-year Floodplain: The project site is not located in the 100-year floodplain. • Erosion Hazard Areas: COR Maps identifies no erosion hazard areas on the project site. • Seismic Hazard Areas: COR Maps identifies no seismic hazard areas on the project site. • Landslide Hazard Areas: COR Maps identifies a moderate landslide hazard area at the southwest corner of the project site. • Coal Mine Hazard Areas: COR Maps identifies a moderate coal mine hazard area along the southern border of the project site. • Critical Aquifer Recharge Area: The project site is not located within a critical aquifer recharge area per iMAP records • Basin Condition: iMap does not indicate any basin conditions. • Areas Susceptible to Groundwater Contamination: iMap does not show the project site as being susceptible to groundwater contamination. King County iMAP was also reviewed for downstream drainage complaints. No relevant complaints were identified. Task 3: Field Inspection A field inspection was performed on June 19th, 2017 on a cloudy day with a temperature of approximately 65 degrees. Onsite Drainage Basin The existing topography of the site has slopes ranging from 0% to 15%. The project site is comprised of a single drainage basin with surface runoff traveling primarily as sheet flow over pervious areas towards the northwest corner of the site. The drainage basin is comprised mostly of grass along with a few trees and one single-family home and a gravel driveway. Based on visual inspection during the site visit and survey contour data there are no low points where runoff can collect on site. Task 4: Drainage System Description Downstream Basin Runoff from the project site sheet flows northwesterly before entering existing stormwater infrastructure via an off-site catch basin on the east side of Shattuck Ave S. The catch basin connects to the storm main located on the west side of Shattuck Ave S and flows north. Approximately 350 feet downstream of the site at the Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 12 intersection of Shattuck Ave S and S 19th St the main turns to the west and runs down S 19th St. Past the end of S 19th St., 900 feet downstream from the site, collected runoff is released from the main through an outfall into a stream to the west that flows into Rolling Hills Creek past the quarter mile mark. Rolling Hills Creek flows westerly until it eventually joins with the Duwamish River. A downstream map and photos are attached in Appendix E. Upstream Basin The project site is bordered by single-family residences to the north, east, and south, and Shattuck Ave S to the west. Surface flow from Shattuck Ave S and the residences to the south flows north along the edge of the road towards the site, entering the existing storm system on the east and west side of Shattuck Ave S. Similarly, surface flows from S 20th Place located to the west of Shattuck Ave S flow east and enter the storm main on the west side of Shattuck Ave S. Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 13 SECTION 4 – FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN The hydrologic analysis of the runoff conditions for this project is based on drainage characteristics such as basin area, soil type, and land use (i.e., pervious vs. impervious) in accordance with the City of Renton Surface Water Design Manual. The Western Washington Hydraulic Model (WWHM) software was used to evaluate the storm water runoff conditions for the project site and to design the on-site flow control facilities. The following is a summary of the results of the analysis and the proposed drainage facility improvements for this project. Existing Site Hydrology The existing site conditions are shown in Figure 3 and summarized in Table 4.1 below. Table 4.1 – Land Use Cover, Existing Site Conditions (prior to development) Basin ID Total Area (AC) Land Cover (AC) Impervious Till Forest Pasture Site Basin 0.52 0.02 0.00 0.50 The Western Washington Hydraulic Model (WWHM) software was used to model the existing site hydrology and calculate runoff peak rates. The results of the existing site runoff analysis are provided in Appendix B. Existing site conditions were modeled as historic site (i.e., fully forested) conditions in the analysis of the pre- developed conditions for all on-site targeted developed surfaces in accordance with CORSWDM standards for Flow Control. The existing land use conditions are summarized in Table 4.2. Table 4.2 – Land Use Cover, Pre-Developed Site Conditions Basin ID Total Area (AC) Land Cover (AC) Impervious Till Forest Till Grass Site Basin 0.50 0 0.50 0 Bypass Basin 0.06 0 0.06 0 Total (minus Bypass Basin) 0.50 0 0.50 0 The site basin area totals 0.50 acres. 0.02 acres were required to be given up as right-of-way dedication as per the city’s request. The area along the frontage including street widening, concrete curb, gutter, and sidewalk along the right-of-way can not be conveyed to the detention vault and was classified as a Bypass Basin that flows to the north away from the project site. Any area of widening or improvements within the right-of-way were modeled as forested for existing conditions. Input and output parameters for this model are provided in Appendix B of this report. Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 14 Developed Site Hydrology The site is planned to be improved with roadway, storm drainage, and utility infrastructure in support of three (3) new single-family residences. Frontage improvements on Shattuck Ave S will be completed in accordance with city road standards as conditions with the preliminary plat approval. These improvements include approximately four feet of road widening, planter strip, and sidewalk. The developed site drainage is contained within one basin. The developed conditions of the site were modeled using the WWHM modeling software. The majority of the roadway, building roof drains, on-site paved surfaces and most landscape areas on the site are collected and directed to the on-site detention vault. Runoff from the bypass basin is collected in the right-of-way is to be bypassed and sent downstream to the north of the site within the existing storm system. Fully developed conditions were modeled assuming 65% impervious coverage for the lots per maximum allowed per zoning code for R-8 zoning. The impervious and pervious areas for all other areas were calculated directly by measuring the new roadways and sidewalks as impervious, and grass areas as pervious. The results of the developed site runoff analysis for the project site are summarized in Table 4.3 and more detailed results are provided in Appendix C. Table 4.3 – Land Use Cover, Developed Conditions Basin ID Total Area (AC) Land Cover (AC) Impervious Till Forest Till Grass Site Basin 0.50 0.25 0 0.25 Bypass Basin 0.06 0.04 0 0.02 Total (minus bypass basin) 0.50 0.25 0 0.25 On-Site BMPs Core requirement #9 requires that all proposed projects provide on-site BMPs to mitigate the hydrologic impacts generated by new impervious and pervious surface, existing impervious surfaces, and replaced impervious surface. The on-site BMPs are methods to disperse, infiltrate, or otherwise reduce or prevent development related increases in runoff at or near the sources of those increases. On-site BMPs shall be incorporated to the maximum extent feasible per the CORSWDM. The feasibility and applicability of full dispersion must be evaluated for all target impervious surfaces. Full dispersion has been determined to be unfeasible due to insufficient flow paths on-site. Where full dispersion of target impervious areas is not feasible or applicable, or will cause flooding or erosion impacts, the feasibility and applicability of full infiltration must be evaluated. Full infiltration has been determined to be unfeasible due to poor soil infiltration characteristics as noted in the Geotechnical Report prepared by Geo Group Northwest, Inc (see Appendix A). All target impervious surfaces not mitigated by full dispersion or full infiltration must be mitigated to the maximum extent feasible using one or more BMPs from the following: limited infiltration, rain gardens, bioretention, and permeable pavement. Each of the above has been determined to be unfeasible due to poor soil infiltration characteristics (see above). On-site infiltration testing was performed by the Geotechnical Engineer in accordance with the CORSWDM and is discussed in the geotechnical report prepared by Geo Group Northwest, Inc. Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 15 All target impervious surfaces not mitigated by an aforementioned BMP must be mitigated to the maximum extent feasible using the Basic Dispersion BMP. Basic dispersion has been determined to be unfeasible for the remainder of the lots due to site topography and limited flow paths. BMPs must be implemented, at minimum, for an impervious area equal to at least 10% of the lot for lot sizes up to 11,000 square feet and at least 20% of the lot for lot sizes between 11,000 and 22,000 square feet. If these minimum areas are not mitigated using feasible BMPs from above, one or more BMPs from the following list are required to be implemented to achieve compliance: Reduced Impervious Surface Credit, Native Growth Retention Credit and Tree Retention Credit. The Reduced Impervious Surface Credit cannot be evaluated at this time; however, this credit may be applied at a later point when housing products have been finalized by the developer during building permitting. Native Growth Retention Credit has been determined to be unfeasible for the project due to existing site topography and lack of potential donor areas. Tree Retention Credit has been determined to be unfeasible for the project due to no trees meeting the minimum design requirements. The soil moisture holding capacity of new pervious surfaces shall be protected in accordance with the soil amendment standards as detailed in Section C.2.13 of the CORSWDM. Any proposed connection of roof downspouts to the local drainage system shall be via a perforated pipe connection as detailed in Section C.2.11 of the CORSWDM. Both of these BMPs will be implemented with the final construction plans for the project. Flow Control Compliance with the Flow Control Duration Standard (Forested Conditions) is proposed for this project. The on- site detention vault has been designed to detain and release controlled flows through a typical flow control riser. A three orifice flow control riser is proposed for the outlet control structure to achieve conformance with the release to downstream systems. The sizes of the orifices on this riser have been designed to control the release durations to match the historic, pre-developed site conditions from 50% of the 2-year event to the 50- year event and to match the peak flows from the 2-year and 10-year event as closely as possible. Table 4.4 shows the pre-developed and post-developed peak flows for 50% of the 2-year, 50-year, and 100-year storm events and account for the bypass areas. Table 4.4 – Peak Flow Summary Structure Land-Use Condition Peak Flow Rates at Point of Compliance (cfs) 2-year 10-year Detention Vault Pre-Developed 0.017 0.028 Developed 0.024 0.072 The full WWHM results are provided in Appendix B. Table 4.5 below lists the design parameters for the detention pond design parameters Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 16 Table 4.5 – WWHM Detention Vault Results Detention Pond Information Detention Volume (Live) 7,920 cf Riser Height 6.00 ft Riser Diam. 12 in Orifice 1 Diam., Elev: 0.00 ft 0.31 in Orifice 2 Diam., Elev: 3.65 ft 0.32 in Orifice 3 Diam., Elev: 4.30 ft 0.58 in Water Quality Design The CORSWDM requires that all proposed projects assess the requirement to provide water quality facilities to treat runoff of pollution-generating impervious surfaces. Storm drainage runoff from pollution generating impervious surfaces (PGIS) will require Basic Water Quality treatment prior to discharge to the downstream, off-site system. This treatment level is proposed to be achieved with a StormFilter located in the northwest corner of the site upstream of the detention vault. Basic treatment facilities are required with the developed project site. Runoff from the private access road, driveways, and on-site pervious surfaces will be collected and treated using a StormFilter prior to entering the detention vault. The StormFilter system is a flow-through stormwater filtration system comprised of a vault that contains a cartridge with ZPG media. Stormwater fills the vault via a catch basin lid, as the water begins to fill the vault it is forced through the ZPG media before being collected and released through the outlet pipe. Appendix C provides additional detail and analysis of this proposed system. Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 17 SECTION 5 – CONVEYANCE SYSTEM ANALYSIS AND DESIGN Surface water collection and conveyance for the project is proposed by means of grading, grated inlets, and below grade pipes. The majority of the roads, building roof drains, on-site paved surfaces and most landscape areas on the site are collected and directed to the on-site detention vault. Stormwater from the vault will enter a flow control structure with a three orifice riser before discharging to the existing catch basin on the west side of Shattuck Ave S. Conveyance analysis for the project will be performed in accordance with Chapter 4 of the CORSWDM which requires that new and existing pipe systems be designed with sufficient capacity to convey and contain at minimum the 25 year peak flow. The design flow rate for conveyance/backwater analysis is based on peak flow rates calculated using WWHM. Developed conditions for improved tributary areas and existing conditions for any off-site tributary areas were used for input parameters. The storm drainage conveyance systems are illustrated in Figure 4. Conveyance backwater analysis will be provided with final engineering. Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 18 SECTION 6 – SPECIAL REPORTS AND STUDIES Geotechnical Report, by Geo Group Northwest , Inc., May 23, 2017 Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 19 SECTION 7 – OTHER PERMITS Construction and Grading Permits will be obtained from the City of Renton for roadway, storm drainage, and sanitary sewer improvements proposed for the infrastructure serving the subdivision. Preliminary Short Plat Approval will be obtained from the City of Renton to establish the layout of the land division and to ensure the proposed plat is in accordance with COR adopted standards. A Construction Permit will be required to construct the access and utility infrastructure to serve the development. Individual building permits will be required for individual home structures. Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 20 SECTION 8 – CSWPPP ANALYSIS AND DESIGN Site specific details and provisions for the temporary erosion and sediment control (ESC) facilities are provided with the improvement plans that accompany this TIR. The proposed facilities have been selected and sized in accordance with the recommendations provided in the CORSWDM standards. In addition to the site-specific ESC measures, the following general Best Management Practices (BMPs) for sediment control shall also be implemented in accordance with the provisions of the CORSWDM: 1. Clearing Limits Construction clearing limits fence or silt fence will be installed by the contractor along the entire project corridor to prevent disturbance of project areas not designated for construction. These fences will be installed prior to clearing and grading activities where appropriate. 2. Cover Measures Temporary and permanent cover measures will be provided by the contractor to protect disturbed areas. Disturbed areas will be seeded and mulched to provide permanent cover measure and to reduce erosion within seven days, if those areas not scheduled for immediate work. 3. Perimeter Protection The contractor will install silt fences as indicated on the drawings prior to any up slope clearing, grading and trenching activities in order to reduce the transport of sediment offsite. 4. Traffic Area Stabilization Stabilized pads of quarry spalls will be installed by the contractor at all egress points from the project site as required to reduce the amount of sediment transported onto paved roads or other offsite areas by motor vehicles. 5. Sediment Retention Sediment retention will be provided by silt fencing and catch basin inlet protection at the locations and dimensions shown on the project drawings. 6. Surface Water Control Surface water control will include ditches, temporary culverts, check dams, and/or other inlet and outlet protection at the locations and dimensions shown on the drawings. 7. Dust Control Water and/or street sweeping equipment will be used by the contractor to control dust emissions during construction operations. 8. Wet Season Requirements If soils are exposed during the period of October 1 to March 31, the contractor will mulch and seed or otherwise cover as much disturbed area as possible by the first week of October, in order to provide protective ground cover for the wet season. The contractor will also conform to the following wet season special provisions: A. Apply cover measures to disturbed areas that are to remain unworked for more than two days. Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 21 B. Protect stockpiles that are to remain unworked for more than 12 hours. No area is to be left uncovered/denuded longer than 12 hours during the winter months. C. Provide onsite stockpiles of cover materials sufficient to cover all disturbed areas. D. Seed all areas that are to be unworked during the wet season by the end of the first week of October. E. Apply mulch to all seeded areas for protection. F. Provide onsite storage of 50 linear feet of silt fence (and the necessary stakes) for every acre of disturbed area. Straw bales are to be stockpiled onsite for use in an emergency. G. Provide construction road and parking lot stabilization areas for all sites. H. Provide additional sediment retention as required by the City of Renton Engineer. I. Provide additional surface water controls as required by the City of Renton Engineer. J. Implement construction phasing and more conservative BMPs for construction activity near surface waters (to be evaluated). K. Review and maintain TESC measures on a weekly basis and within 24-hours after any runoff-producing event. 9. Sensitive Areas Restrictions No sensitive areas are located on-site. 10. Maintenance Requirements All ESC measures will be maintained and reviewed on a regular basis following the standard maintenance requirements identified in the project drawings. An ESC supervisor will be designated by the contractor and the name, address and phone number of the ESC supervisor will be given to the City prior to the start of construction. A sign will be posted at the primary entrance to the project site identifying the ESC supervisor and his/her phone number. The ESC supervisor will inspect the site at least once a month during the dry season, weekly during the wet season, and within 24 hours of each runoff-producing storm. A standard ESC maintenance report will be used as a written record of all maintenance. The contractor will be responsible for phasing of erosion and sediment controls during construction so that they are coordinated with construction activities. The contractor will also be responsible for maintenance of temporary controls during construction, including removal of accumulated sediment, and for the removal of the controls and remaining accumulated sediment at the completion of construction. 11. Final Stabilization Prior to obtaining final construction approval, the site shall be stabilized, the structural ESC measures removed and drainage facilities cleaned. To obtain final construction approval, the following conditions must be met: • All disturbed areas of the site should be vegetated or otherwise permanently stabilized in accordance with project BMPs. At a minimum, disturbed areas should be seeded and mulched to provide a high likelihood that sufficient cover will develop shortly after final approval. The plans include erosion control notes and specifications for hydro-seeding and mulching disturbed areas. • Structural measures such as silt fences, pipe slope drains, storm drain inlet protection and sediment traps and ponds shall be removed once the proposed improvements are complete and vegetated areas are stabilized. All permanent surface water facilities shall be cleaned completely and restored to working order prior to removal of ESC facilities. Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 22 SECTION 9 – BOND QUANTITIES, FACILITY SUMMARIES, AND DECLARATION OF COVENANT All required bonds, facility summaries, and covenants will be provided prior to final approval. Moorman Short Plat Preliminary Technical Information Report CPH Project No. 0100-16-107 July 19, 2017 CP|H CONSULTANTS Page 23 SECTION 10 – OPERATIONS AND MAINTENANCE MANUAL The on-site storm drainage conveyance facilities for this project will be publicly maintained by the City of Renton. The required BMP facilities will be privately maintained and designed in accordance with CORSWDM. A site specific maintenance manual for the private BMPs will be completed prior to final recording. Site Planning Civil Engineering Project Management Land Development Consulting FIGURES 20TH PLACE S SHATTUCK AVENUE SIN FEETPLAN 0 N 20 40 SEC. 19, TWP 23 N, R5E W.M. Copyright © 2017 CPH Consultants, LLC. All Rights Reserved. CP H O N S U L T A N T S 11431 Willows Rd. NE, Suite 120 Redmond, WA 98052 Phone: (425) 285-2390 | FAX: (425) 285-2389 www.cphconsultants.com Site Planning • Civil Engineering Land Use Consulting • Project Management CITY OF RENTON KING COUNTY, WASHINGTON MOORMAN SHORT PLAT FIGURE 3 - EXISTING SITE CONDITIONS 20TH PLACE S SHATTUCK AVENUE S1 2 3 TRACT L1 TRACT A SF100 IN FEETPLAN 0 N 20 40 SEC. 19, TWP 23 N, R5E W.M. Copyright © 2017 CPH Consultants, LLC. All Rights Reserved. CP H O N S U L T A N T S 11431 Willows Rd. NE, Suite 120 Redmond, WA 98052 Phone: (425) 285-2390 | FAX: (425) 285-2389 www.cphconsultants.com Site Planning • Civil Engineering Land Use Consulting • Project Management CITY OF RENTON KING COUNTY, WASHINGTON MOORMAN SHORT PLAT FIGURE 4 - DEVELOPED SITE CONDITIONS 20TH PLACE S SHATTUCK AVENUE S1 2 3 TRACT L1 TRACT A BYPASS BASIN SITE BASIN IN FEETPLAN 0 N 20 40 SEC. 19, TWP 23 N, R5E W.M. Copyright © 2017 CPH Consultants, LLC. All Rights Reserved. CP H O N S U L T A N T S 11431 Willows Rd. NE, Suite 120 Redmond, WA 98052 Phone: (425) 285-2390 | FAX: (425) 285-2389 www.cphconsultants.com Site Planning • Civil Engineering Land Use Consulting • Project Management CITY OF RENTON KING COUNTY, WASHINGTON MOORMAN SHORT PLAT FIGURE 5 - DRAINAGE BASINS PRE-DEVELOPED SITE CONDITIONS DEVELOPED SITE CONDITIONS Site Planning Civil Engineering Project Management Land Development Consulting APPENDIX A GEOTECHNICAL REPORT AND NRCS DATA United States Department of Agriculture A product of the National Cooperative Soil Survey, a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local participants Custom Soil Resource Report for King County Area, Washington Natural Resources Conservation Service June 14, 2017 Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http://www.nrcs.usda.gov/wps/ portal/nrcs/main/soils/health/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (https://offices.sc.egov.usda.gov/locator/app?agency=nrcs) or your NRCS State Soil Scientist (http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/contactus/? cid=nrcs142p2_053951). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey, the site for official soil survey information. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require 2 alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and employer. 3 Contents Preface....................................................................................................................2 How Soil Surveys Are Made..................................................................................5 Soil Map.................................................................................................................. 8 Soil Map................................................................................................................9 Legend................................................................................................................10 Map Unit Legend................................................................................................ 11 Map Unit Descriptions.........................................................................................11 King County Area, Washington.......................................................................13 BeC—Beausite gravelly sandy loam, 6 to 15 percent slopes......................13 References............................................................................................................15 4 How Soil Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area. They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses. Soil scientists observed the steepness, length, and shape of the slopes; the general pattern of drainage; the kinds of crops and native plants; and the kinds of bedrock. They observed and described many soil profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity. Currently, soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate, water resources, soils, biological resources, and land uses (USDA, 2006). Soil survey areas typically consist of parts of one or more MLRA. The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform. By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform, a soil scientist develops a concept, or model, of how they were formed. Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape. Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils. They can observe only a limited number of soil profiles. Nevertheless, these observations, supplemented by an understanding of the soil-vegetation-landscape relationship, are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries. Soil scientists recorded the characteristics of the soil profiles that they studied. They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils. After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes (units). Taxonomic classes are concepts. Each taxonomic class has a set of soil characteristics with precisely defined limits. The classes are used as a basis for comparison to classify soils systematically. Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile. After the soil 5 scientists classified and named the soils in the survey area, they compared the individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research. The objective of soil mapping is not to delineate pure map unit components; the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions. Some components may be highly contrasting to the other components of the map unit. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas. Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units, complexity of the landscape, and experience of the soil scientist. Observations are made to test and refine the soil-landscape model and predictions and to verify the classification of the soils at specific locations. Once the soil-landscape model is refined, a significantly smaller number of measurements of individual soil properties are made and recorded. These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand, silt, clay, salt, and other components. Properties of each soil typically vary from one point to another across the landscape. Observations for map unit components are aggregated to develop ranges of characteristics for the components. The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit component. Values for some properties are estimated from combinations of other properties. While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests. Soil scientists interpret the data from these analyses and tests as well as the field-observed characteristics and the soil properties to determine the expected behavior of the soils under different uses. Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management. Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists. For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil. Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date. After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and Custom Soil Resource Report 6 identified each as a specific map unit. Aerial photographs show trees, buildings, fields, roads, and rivers, all of which help in locating boundaries accurately. Custom Soil Resource Report 7 Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. 8 9 Custom Soil Resource Report Soil Map 5256740525675052567605256770525678052567905256800525681052567405256750525676052567705256780525679052568005256810559340 559350 559360 559370 559380 559390 559400 559410 559420 559430 559440 559450 559340 559350 559360 559370 559380 559390 559400 559410 559420 559430 559440 559450 47° 27' 43'' N 122° 12' 45'' W47° 27' 43'' N122° 12' 40'' W47° 27' 40'' N 122° 12' 45'' W47° 27' 40'' N 122° 12' 40'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 10N WGS84 0 25 50 100 150 Feet 0 5 10 20 30 Meters Map Scale: 1:567 if printed on A landscape (11" x 8.5") sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: King County Area, Washington Survey Area Data: Version 12, Sep 8, 2016 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Aug 31, 2013—Oct 6, 2013 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Custom Soil Resource Report 10 Map Unit Legend King County Area, Washington (WA633) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI BeC Beausite gravelly sandy loam, 6 to 15 percent slopes 0.5 100.0% Totals for Area of Interest 0.5 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, Custom Soil Resource Report 11 onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha-Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. Custom Soil Resource Report 12 King County Area, Washington BeC—Beausite gravelly sandy loam, 6 to 15 percent slopes Map Unit Setting National map unit symbol: 1hmss Elevation: 0 to 1,500 feet Mean annual precipitation: 30 to 50 inches Mean annual air temperature: 48 to 52 degrees F Frost-free period: 160 to 220 days Farmland classification: Not prime farmland Map Unit Composition Beausite and similar soils: 95 percent Minor components: 5 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Beausite Setting Parent material: Till over residuum from sandstone Typical profile H1 - 0 to 6 inches: gravelly ashy sandy loam H2 - 6 to 19 inches: gravelly ashy sandy loam H3 - 19 to 38 inches: very gravelly sandy loam H4 - 38 to 42 inches: bedrock Properties and qualities Slope: 6 to 15 percent Depth to restrictive feature: 24 to 40 inches to lithic bedrock Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Low (about 3.5 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4s Hydrologic Soil Group: C Other vegetative classification: Droughty Soils (G002XF403WA) Hydric soil rating: No Minor Components Norma Percent of map unit: 3 percent Landform: Depressions Hydric soil rating: Yes Seattle Percent of map unit: 2 percent Landform: Depressions Custom Soil Resource Report 13 Hydric soil rating: Yes Custom Soil Resource Report 14 References American Association of State Highway and Transportation Officials (AASHTO). 2004. Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487-00. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service FWS/OBS-79/31. Federal Register. July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils in the United States. National Research Council. 1995. Wetlands: Characteristics and boundaries. Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. http://www.nrcs.usda.gov/wps/portal/ nrcs/detail/national/soils/?cid=nrcs142p2_054262 Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, U.S. Department of Agriculture Handbook 436. http:// www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053577 Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. http:// www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053580 Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y-87-1. United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ home/?cid=nrcs142p2_053374 United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.nrcs.usda.gov/wps/portal/nrcs/ detail/national/landuse/rangepasture/?cid=stelprdb1043084 15 United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. http://www.nrcs.usda.gov/wps/portal/ nrcs/detail/soils/scientists/?cid=nrcs142p2_054242 United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/? cid=nrcs142p2_053624 United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. http:// www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf Custom Soil Resource Report 16 Site Planning Civil Engineering Project Management Land Development Consulting APPENDIX B WWHM REPORT WWHM2012 PROJECT REPORT Moorman Property 6/21/2017 8:57:54 AM Page 2 General Model Information Project Name:Moorman Property Site Name:Moorman Property, Renton Site Address:2004 Shattuck Ave City:Renton Report Date:6/21/2017 Gage:Seatac Data Start:1948/10/01 Data End:2009/09/30 Timestep:15 Minute Precip Scale:0.000 (adjusted) 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 Moorman Property 6/21/2017 8:57:54 AM Page 3 Landuse Basin Data Predeveloped Land Use SITE BASIN Bypass:No GroundWater:No Pervious Land Use acre C, Forest, Mod 0.498 Pervious Total 0 Impervious Land Use acre Impervious Total 0 Basin Total 0 Element Flows To: Surface Interflow Groundwater Moorman Property 6/21/2017 8:57:54 AM Page 4 BYPASS BASIN Bypass:No GroundWater:No Pervious Land Use acre C, Forest, Mod 0.06 Pervious Total 0 Impervious Land Use acre Impervious Total 0 Basin Total 0 Element Flows To: Surface Interflow Groundwater Moorman Property 6/21/2017 8:57:54 AM Page 5 Mitigated Land Use SITE BASIN Bypass:No GroundWater:No Pervious Land Use acre C, Lawn, Mod 0.252 Pervious Total 0 Impervious Land Use acre DRIVEWAYS MOD 0.246 Impervious Total 0 Basin Total 0 Element Flows To: Surface Interflow Groundwater ONSITE VAULT ONSITE VAULT Moorman Property 6/21/2017 8:57:54 AM Page 6 BYPASS BASIN Bypass:Yes GroundWater:No Pervious Land Use acre C, Lawn, Mod 0.017 Pervious Total 0 Impervious Land Use acre DRIVEWAYS MOD 0.043 Impervious Total 0 Basin Total 0 Element Flows To: Surface Interflow Groundwater Moorman Property 6/21/2017 8:57:54 AM Page 7 Routing Elements Predeveloped Routing Moorman Property 6/21/2017 8:57:54 AM Page 8 Mitigated Routing ONSITE VAULT Width:15 ft. Length:88 ft. Depth:6.5 ft. Discharge Structure Riser Height:6 ft. Riser Diameter:18 in. Orifice 1 Diameter:0.3125 in.Elevation:0 ft. Orifice 2 Diameter:0.323 in.Elevation:3.65 ft. Orifice 3 Diameter:0.5781 in.Elevation:4.3 ft. Element Flows To: Outlet 1 Outlet 2 Vault Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)Infilt(cfs) 0.0000 0.030 0.000 0.000 0.000 0.0722 0.030 0.002 0.000 0.000 0.1444 0.030 0.004 0.001 0.000 0.2167 0.030 0.006 0.001 0.000 0.2889 0.030 0.008 0.001 0.000 0.3611 0.030 0.010 0.001 0.000 0.4333 0.030 0.013 0.001 0.000 0.5056 0.030 0.015 0.001 0.000 0.5778 0.030 0.017 0.002 0.000 0.6500 0.030 0.019 0.002 0.000 0.7222 0.030 0.021 0.002 0.000 0.7944 0.030 0.024 0.002 0.000 0.8667 0.030 0.026 0.002 0.000 0.9389 0.030 0.028 0.002 0.000 1.0111 0.030 0.030 0.002 0.000 1.0833 0.030 0.032 0.002 0.000 1.1556 0.030 0.035 0.002 0.000 1.2278 0.030 0.037 0.002 0.000 1.3000 0.030 0.039 0.003 0.000 1.3722 0.030 0.041 0.003 0.000 1.4444 0.030 0.043 0.003 0.000 1.5167 0.030 0.046 0.003 0.000 1.5889 0.030 0.048 0.003 0.000 1.6611 0.030 0.050 0.003 0.000 1.7333 0.030 0.052 0.003 0.000 1.8056 0.030 0.054 0.003 0.000 1.8778 0.030 0.056 0.003 0.000 1.9500 0.030 0.059 0.003 0.000 2.0222 0.030 0.061 0.003 0.000 2.0944 0.030 0.063 0.003 0.000 2.1667 0.030 0.065 0.003 0.000 2.2389 0.030 0.067 0.004 0.000 2.3111 0.030 0.070 0.004 0.000 2.3833 0.030 0.072 0.004 0.000 2.4556 0.030 0.074 0.004 0.000 2.5278 0.030 0.076 0.004 0.000 2.6000 0.030 0.078 0.004 0.000 2.6722 0.030 0.081 0.004 0.000 Moorman Property 6/21/2017 8:57:54 AM Page 9 2.7444 0.030 0.083 0.004 0.000 2.8167 0.030 0.085 0.004 0.000 2.8889 0.030 0.087 0.004 0.000 2.9611 0.030 0.089 0.004 0.000 3.0333 0.030 0.091 0.004 0.000 3.1056 0.030 0.094 0.004 0.000 3.1778 0.030 0.096 0.004 0.000 3.2500 0.030 0.098 0.004 0.000 3.3222 0.030 0.100 0.004 0.000 3.3944 0.030 0.102 0.004 0.000 3.4667 0.030 0.105 0.004 0.000 3.5389 0.030 0.107 0.005 0.000 3.6111 0.030 0.109 0.005 0.000 3.6833 0.030 0.111 0.005 0.000 3.7556 0.030 0.113 0.006 0.000 3.8278 0.030 0.116 0.006 0.000 3.9000 0.030 0.118 0.006 0.000 3.9722 0.030 0.120 0.006 0.000 4.0444 0.030 0.122 0.007 0.000 4.1167 0.030 0.124 0.007 0.000 4.1889 0.030 0.126 0.007 0.000 4.2611 0.030 0.129 0.007 0.000 4.3333 0.030 0.131 0.009 0.000 4.4056 0.030 0.133 0.011 0.000 4.4778 0.030 0.135 0.012 0.000 4.5500 0.030 0.137 0.012 0.000 4.6222 0.030 0.140 0.013 0.000 4.6944 0.030 0.142 0.014 0.000 4.7667 0.030 0.144 0.015 0.000 4.8389 0.030 0.146 0.015 0.000 4.9111 0.030 0.148 0.016 0.000 4.9833 0.030 0.151 0.016 0.000 5.0556 0.030 0.153 0.017 0.000 5.1278 0.030 0.155 0.017 0.000 5.2000 0.030 0.157 0.018 0.000 5.2722 0.030 0.159 0.018 0.000 5.3444 0.030 0.162 0.019 0.000 5.4167 0.030 0.164 0.019 0.000 5.4889 0.030 0.166 0.019 0.000 5.5611 0.030 0.168 0.020 0.000 5.6333 0.030 0.170 0.020 0.000 5.7056 0.030 0.172 0.021 0.000 5.7778 0.030 0.175 0.021 0.000 5.8500 0.030 0.177 0.021 0.000 5.9222 0.030 0.179 0.022 0.000 5.9944 0.030 0.181 0.022 0.000 6.0667 0.030 0.183 0.296 0.000 6.1389 0.030 0.186 0.843 0.000 6.2111 0.030 0.188 1.543 0.000 6.2833 0.030 0.190 2.335 0.000 6.3556 0.030 0.192 3.160 0.000 6.4278 0.030 0.194 3.955 0.000 6.5000 0.030 0.197 4.664 0.000 6.5722 0.030 0.199 5.243 0.000 6.6444 0.000 0.000 5.675 0.000 Moorman Property 6/21/2017 8:57:54 AM Page 10 Analysis Results POC 1 + Predeveloped x Mitigated Predeveloped Landuse Totals for POC #1 Total Pervious Area:0.558 Total Impervious Area:0 Mitigated Landuse Totals for POC #1 Total Pervious Area:0.269 Total Impervious Area:0.289 Flow Frequency Method:Log Pearson Type III 17B Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.016615 5 year 0.027224 10 year 0.034046 25 year 0.042161 50 year 0.047782 100 year 0.053033 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.024327 5 year 0.031079 10 year 0.035612 25 year 0.041435 50 year 0.045852 100 year 0.050345 Annual Peaks Annual Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1949 0.019 0.030 1950 0.023 0.028 1951 0.036 0.031 1952 0.011 0.015 1953 0.009 0.018 1954 0.014 0.020 1955 0.023 0.022 1956 0.018 0.027 1957 0.015 0.023 1958 0.016 0.019 Moorman Property 6/21/2017 8:58:50 AM Page 11 1959 0.014 0.019 1960 0.025 0.024 1961 0.014 0.024 1962 0.009 0.016 1963 0.012 0.022 1964 0.017 0.019 1965 0.011 0.023 1966 0.011 0.019 1967 0.026 0.029 1968 0.014 0.034 1969 0.014 0.021 1970 0.011 0.021 1971 0.013 0.025 1972 0.028 0.030 1973 0.012 0.015 1974 0.014 0.026 1975 0.019 0.024 1976 0.013 0.021 1977 0.002 0.019 1978 0.011 0.025 1979 0.007 0.030 1980 0.032 0.037 1981 0.010 0.023 1982 0.021 0.033 1983 0.018 0.025 1984 0.011 0.018 1985 0.006 0.021 1986 0.028 0.021 1987 0.025 0.028 1988 0.010 0.017 1989 0.007 0.027 1990 0.060 0.042 1991 0.032 0.038 1992 0.013 0.019 1993 0.013 0.019 1994 0.004 0.016 1995 0.018 0.020 1996 0.042 0.039 1997 0.033 0.036 1998 0.008 0.022 1999 0.036 0.044 2000 0.013 0.023 2001 0.002 0.025 2002 0.015 0.028 2003 0.022 0.029 2004 0.023 0.044 2005 0.017 0.019 2006 0.020 0.025 2007 0.045 0.047 2008 0.055 0.035 2009 0.026 0.029 Ranked Annual Peaks Ranked Annual Peaks for Predeveloped and Mitigated. POC #1 Rank Predeveloped Mitigated 1 0.0602 0.0471 2 0.0554 0.0444 3 0.0455 0.0442 Moorman Property 6/21/2017 8:58:50 AM Page 12 4 0.0421 0.0421 5 0.0363 0.0386 6 0.0357 0.0379 7 0.0325 0.0373 8 0.0324 0.0362 9 0.0319 0.0350 10 0.0285 0.0335 11 0.0276 0.0331 12 0.0258 0.0309 13 0.0255 0.0303 14 0.0251 0.0302 15 0.0250 0.0300 16 0.0234 0.0290 17 0.0227 0.0288 18 0.0226 0.0285 19 0.0219 0.0285 20 0.0210 0.0278 21 0.0196 0.0276 22 0.0191 0.0269 23 0.0188 0.0266 24 0.0182 0.0256 25 0.0182 0.0255 26 0.0180 0.0249 27 0.0174 0.0247 28 0.0167 0.0247 29 0.0163 0.0246 30 0.0147 0.0244 31 0.0147 0.0236 32 0.0144 0.0235 33 0.0141 0.0234 34 0.0140 0.0232 35 0.0140 0.0231 36 0.0138 0.0227 37 0.0135 0.0222 38 0.0135 0.0221 39 0.0130 0.0218 40 0.0127 0.0212 41 0.0127 0.0212 42 0.0127 0.0211 43 0.0122 0.0208 44 0.0118 0.0208 45 0.0114 0.0204 46 0.0114 0.0201 47 0.0112 0.0193 48 0.0111 0.0193 49 0.0108 0.0190 50 0.0107 0.0189 51 0.0102 0.0187 52 0.0099 0.0187 53 0.0092 0.0186 54 0.0086 0.0186 55 0.0080 0.0176 56 0.0069 0.0175 57 0.0066 0.0171 58 0.0064 0.0164 59 0.0043 0.0163 60 0.0023 0.0153 61 0.0020 0.0150 Moorman Property 6/21/2017 8:58:50 AM Page 13 Moorman Property 6/21/2017 8:58:50 AM Page 14 Duration Flows The Facility PASSED Flow(cfs)Predev Mit Percentage Pass/Fail 0.0083 17075 17139 100 Pass 0.0087 15481 14917 96 Pass 0.0091 14067 13075 92 Pass 0.0095 12797 11601 90 Pass 0.0099 11565 10320 89 Pass 0.0103 10515 9287 88 Pass 0.0107 9591 8369 87 Pass 0.0111 8765 7589 86 Pass 0.0115 8049 6891 85 Pass 0.0119 7356 6293 85 Pass 0.0123 6740 5764 85 Pass 0.0127 6192 5251 84 Pass 0.0131 5730 4817 84 Pass 0.0135 5309 4415 83 Pass 0.0139 4928 4057 82 Pass 0.0143 4571 3668 80 Pass 0.0147 4241 3382 79 Pass 0.0151 3955 3106 78 Pass 0.0155 3645 2860 78 Pass 0.0159 3390 2577 76 Pass 0.0163 3133 2336 74 Pass 0.0167 2915 2084 71 Pass 0.0171 2710 1866 68 Pass 0.0175 2490 1680 67 Pass 0.0179 2319 1491 64 Pass 0.0183 2136 1342 62 Pass 0.0187 1973 1218 61 Pass 0.0191 1825 1109 60 Pass 0.0195 1702 1003 58 Pass 0.0199 1577 898 56 Pass 0.0203 1443 796 55 Pass 0.0207 1327 699 52 Pass 0.0211 1233 602 48 Pass 0.0215 1147 506 44 Pass 0.0219 1086 433 39 Pass 0.0223 1020 369 36 Pass 0.0227 947 312 32 Pass 0.0231 885 279 31 Pass 0.0235 826 257 31 Pass 0.0239 761 234 30 Pass 0.0243 725 217 29 Pass 0.0247 675 199 29 Pass 0.0251 623 181 29 Pass 0.0255 589 165 28 Pass 0.0259 549 152 27 Pass 0.0263 506 136 26 Pass 0.0266 469 116 24 Pass 0.0270 427 107 25 Pass 0.0274 388 95 24 Pass 0.0278 356 83 23 Pass 0.0282 328 74 22 Pass 0.0286 297 66 22 Pass 0.0290 270 55 20 Pass Moorman Property 6/21/2017 8:58:50 AM Page 15 0.0294 241 49 20 Pass 0.0298 218 46 21 Pass 0.0302 198 42 21 Pass 0.0306 174 38 21 Pass 0.0310 152 34 22 Pass 0.0314 130 31 23 Pass 0.0318 119 29 24 Pass 0.0322 104 29 27 Pass 0.0326 95 24 25 Pass 0.0330 84 24 28 Pass 0.0334 74 22 29 Pass 0.0338 69 20 28 Pass 0.0342 61 20 32 Pass 0.0346 53 17 32 Pass 0.0350 46 16 34 Pass 0.0354 39 16 41 Pass 0.0358 29 16 55 Pass 0.0362 25 14 56 Pass 0.0366 22 12 54 Pass 0.0370 20 12 60 Pass 0.0374 17 10 58 Pass 0.0378 14 10 71 Pass 0.0382 12 9 75 Pass 0.0386 8 8 100 Pass 0.0390 7 7 100 Pass 0.0394 7 7 100 Pass 0.0398 7 7 100 Pass 0.0402 6 6 100 Pass 0.0406 6 6 100 Pass 0.0410 6 6 100 Pass 0.0414 6 6 100 Pass 0.0418 6 6 100 Pass 0.0422 5 4 80 Pass 0.0426 5 3 60 Pass 0.0430 5 3 60 Pass 0.0434 5 3 60 Pass 0.0438 5 3 60 Pass 0.0442 5 2 40 Pass 0.0446 5 1 20 Pass 0.0450 4 1 25 Pass 0.0454 4 1 25 Pass 0.0458 3 1 33 Pass 0.0462 3 1 33 Pass 0.0466 3 1 33 Pass 0.0470 3 1 33 Pass 0.0474 3 0 0 Pass 0.0478 3 0 0 Pass Moorman Property 6/21/2017 8:58:51 AM Page 16 Water Quality Water Quality BMP Flow and Volume for POC #1 On-line facility volume:0 acre-feet On-line facility target flow:0 cfs. Adjusted for 15 min:0 cfs. Off-line facility target flow:0 cfs. Adjusted for 15 min:0 cfs. Moorman Property 6/21/2017 8:58:51 AM Page 17 LID Report Moorman Property 6/21/2017 8:59:34 AM Page 18 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. Moorman Property 6/21/2017 8:59:34 AM Page 19 Appendix Predeveloped Schematic Moorman Property 6/21/2017 8:59:34 AM Page 20 Mitigated Schematic Moorman Property 6/21/2017 8:59:34 AM Page 21 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 Moorman Property.wdm MESSU 25 PreMoorman Property.MES 27 PreMoorman Property.L61 28 PreMoorman Property.L62 30 POCMoorman Property1.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 SITE BASIN 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 Moorman Property 6/21/2017 8:59:34 AM Page 22 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 Moorman Property 6/21/2017 8:59:34 AM Page 23 END IMPLND SCHEMATIC <-Source-> <--Area--> <-Target-> MBLK *** <Name> # <-factor-> <Name> # Tbl# *** SITE BASIN*** PERLND 11 0.498 COPY 501 12 PERLND 11 0.498 COPY 501 13 BYPASS BASIN*** PERLND 11 0.06 COPY 501 12 PERLND 11 0.06 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-> *** Moorman Property 6/21/2017 8:59:34 AM Page 24 <Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # *** WDM 2 PREC ENGL 1 PERLND 1 999 EXTNL PREC WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC WDM 1 EVAP ENGL 0.76 PERLND 1 999 EXTNL PETINP WDM 1 EVAP ENGL 0.76 IMPLND 1 999 EXTNL PETINP END EXT SOURCES EXT TARGETS <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd *** <Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg*** COPY 501 OUTPUT MEAN 1 1 48.4 WDM 501 FLOW ENGL REPL END EXT TARGETS MASS-LINK <Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->*** <Name> <Name> # #<-factor-> <Name> <Name> # #*** MASS-LINK 12 PERLND PWATER SURO 0.083333 COPY INPUT MEAN END MASS-LINK 12 MASS-LINK 13 PERLND PWATER IFWO 0.083333 COPY INPUT MEAN END MASS-LINK 13 END MASS-LINK END RUN Moorman Property 6/21/2017 8:59:34 AM Page 25 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 Moorman Property.wdm MESSU 25 MitMoorman Property.MES 27 MitMoorman Property.L61 28 MitMoorman Property.L62 30 POCMoorman Property1.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 PERLND 17 IMPLND 6 RCHRES 1 COPY 1 COPY 501 COPY 601 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 ONSITE VAULT MAX 1 2 30 9 END DISPLY-INFO1 END DISPLY COPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 601 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 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 END ACTIVITY PRINT-INFO Moorman Property 6/21/2017 8:59:34 AM Page 26 <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 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 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 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 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 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 END PWAT-STATE1 END PERLND IMPLND GEN-INFO <PLS ><-------Name-------> Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 6 DRIVEWAYS/MOD 1 1 1 27 0 END GEN-INFO *** Section IWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** 6 0 0 1 0 0 0 END ACTIVITY PRINT-INFO <ILS > ******** Print-flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* 6 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 *** 6 0 0 0 0 0 END IWAT-PARM1 IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC 6 400 0.05 0.1 0.08 END IWAT-PARM2 Moorman Property 6/21/2017 8:59:34 AM Page 27 IWAT-PARM3 <PLS > IWATER input info: Part 3 *** # - # ***PETMAX PETMIN 6 0 0 END IWAT-PARM3 IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS 6 0 0 END IWAT-STATE1 END IMPLND SCHEMATIC <-Source-> <--Area--> <-Target-> MBLK *** <Name> # <-factor-> <Name> # Tbl# *** SITE BASIN*** PERLND 17 0.252 RCHRES 1 2 PERLND 17 0.252 RCHRES 1 3 IMPLND 6 0.246 RCHRES 1 5 BYPASS BASIN*** PERLND 17 0.017 COPY 501 12 PERLND 17 0.017 COPY 601 12 PERLND 17 0.017 COPY 501 13 PERLND 17 0.017 COPY 601 13 IMPLND 6 0.043 COPY 501 15 IMPLND 6 0.043 COPY 601 15 ******Routing****** PERLND 17 0.252 COPY 1 12 IMPLND 6 0.246 COPY 1 15 PERLND 17 0.252 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 RCHRES GEN-INFO RCHRES Name Nexits Unit Systems Printer *** # - #<------------------><---> User T-series Engl Metr LKFG *** in out *** 1 ONSITE VAULT 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 *** Moorman Property 6/21/2017 8:59:34 AM Page 28 # - # 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 0.02 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 0.030303 0.000000 0.000000 0.072222 0.030303 0.002189 0.000712 0.144444 0.030303 0.004377 0.001007 0.216667 0.030303 0.006566 0.001234 0.288889 0.030303 0.008754 0.001424 0.361111 0.030303 0.010943 0.001592 0.433333 0.030303 0.013131 0.001744 0.505556 0.030303 0.015320 0.001884 0.577778 0.030303 0.017508 0.002014 0.650000 0.030303 0.019697 0.002137 0.722222 0.030303 0.021886 0.002252 0.794444 0.030303 0.024074 0.002362 0.866667 0.030303 0.026263 0.002467 0.938889 0.030303 0.028451 0.002568 1.011111 0.030303 0.030640 0.002665 1.083333 0.030303 0.032828 0.002758 1.155556 0.030303 0.035017 0.002849 1.227778 0.030303 0.037205 0.002936 1.300000 0.030303 0.039394 0.003022 1.372222 0.030303 0.041582 0.003104 1.444444 0.030303 0.043771 0.003185 1.516667 0.030303 0.045960 0.003264 1.588889 0.030303 0.048148 0.003340 1.661111 0.030303 0.050337 0.003416 1.733333 0.030303 0.052525 0.003489 1.805556 0.030303 0.054714 0.003561 1.877778 0.030303 0.056902 0.003631 1.950000 0.030303 0.059091 0.003701 2.022222 0.030303 0.061279 0.003769 2.094444 0.030303 0.063468 0.003835 2.166667 0.030303 0.065657 0.003901 2.238889 0.030303 0.067845 0.003965 2.311111 0.030303 0.070034 0.004029 2.383333 0.030303 0.072222 0.004091 2.455556 0.030303 0.074411 0.004153 2.527778 0.030303 0.076599 0.004213 2.600000 0.030303 0.078788 0.004273 2.672222 0.030303 0.080976 0.004332 2.744444 0.030303 0.083165 0.004390 2.816667 0.030303 0.085354 0.004448 2.888889 0.030303 0.087542 0.004504 2.961111 0.030303 0.089731 0.004560 3.033333 0.030303 0.091919 0.004616 Moorman Property 6/21/2017 8:59:34 AM Page 29 3.105556 0.030303 0.094108 0.004670 3.177778 0.030303 0.096296 0.004724 3.250000 0.030303 0.098485 0.004777 3.322222 0.030303 0.100673 0.004830 3.394444 0.030303 0.102862 0.004883 3.466667 0.030303 0.105051 0.004934 3.538889 0.030303 0.107239 0.004985 3.611111 0.030303 0.109428 0.005036 3.683333 0.030303 0.111616 0.005603 3.755556 0.030303 0.113805 0.006055 3.827778 0.030303 0.115993 0.006379 3.900000 0.030303 0.118182 0.006649 3.972222 0.030303 0.120370 0.006889 4.044444 0.030303 0.122559 0.007108 4.116667 0.030303 0.124747 0.007311 4.188889 0.030303 0.126936 0.007502 4.261111 0.030303 0.129125 0.007684 4.333333 0.030303 0.131313 0.009513 4.405556 0.030303 0.133502 0.010970 4.477778 0.030303 0.135690 0.012007 4.550000 0.030303 0.137879 0.012873 4.622222 0.030303 0.140067 0.013637 4.694444 0.030303 0.142256 0.014331 4.766667 0.030303 0.144444 0.014973 4.838889 0.030303 0.146633 0.015574 4.911111 0.030303 0.148822 0.016142 4.983333 0.030303 0.151010 0.016682 5.055556 0.030303 0.153199 0.017198 5.127778 0.030303 0.155387 0.017694 5.200000 0.030303 0.157576 0.018172 5.272222 0.030303 0.159764 0.018633 5.344444 0.030303 0.161953 0.019080 5.416667 0.030303 0.164141 0.019514 5.488889 0.030303 0.166330 0.019937 5.561111 0.030303 0.168519 0.020348 5.633333 0.030303 0.170707 0.020749 5.705556 0.030303 0.172896 0.021141 5.777778 0.030303 0.175084 0.021525 5.850000 0.030303 0.177273 0.021900 5.922222 0.030303 0.179461 0.022268 5.994444 0.030303 0.181650 0.022629 6.066667 0.030303 0.183838 0.296678 6.138889 0.030303 0.186027 0.843109 6.211111 0.030303 0.188215 1.543284 6.283333 0.030303 0.190404 2.335694 6.355556 0.030303 0.192593 3.160144 6.427778 0.030303 0.194781 3.955266 6.500000 0.030303 0.196970 4.664080 6.572222 0.030303 0.199158 5.243283 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*** 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 COPY 601 OUTPUT MEAN 1 1 48.4 WDM 901 FLOW ENGL REPL RCHRES 1 HYDR RO 1 1 1 WDM 1000 FLOW ENGL REPL RCHRES 1 HYDR STAGE 1 1 1 WDM 1001 STAG ENGL REPL Moorman Property 6/21/2017 8:59:34 AM Page 30 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 Moorman Property 6/21/2017 8:59:34 AM Page 31 Predeveloped HSPF Message File Moorman Property 6/21/2017 8:59:34 AM Page 32 Mitigated HSPF Message File ERROR/WARNING ID: 238 1 The continuity error reported below is greater than 1 part in 1000 and is therefore considered high. Did you specify any "special actions"? If so, they could account for it. Relevant data are: DATE/TIME: 1999/ 9/30 24: 0 RCHRES : 1 RELERR STORS STOR MATIN MATDIF -2.836E-03 0.00000 0.0000E+00 0.00000 -2.745E-08 Where: RELERR is the relative error (ERROR/REFVAL). ERROR is (STOR-STORS) - MATDIF. REFVAL is the reference value (STORS+MATIN). STOR is the storage of material in the processing unit (land-segment or reach/reservior) at the end of the present interval. STORS is the storage of material in the pu at the start of the present printout reporting period. MATIN is the total inflow of material to the pu during the present printout reporting period. MATDIF is the net inflow (inflow-outflow) of material to the pu during the present printout reporting period. ERROR/WARNING ID: 238 1 The continuity error reported below is greater than 1 part in 1000 and is therefore considered high. Did you specify any "special actions"? If so, they could account for it. Relevant data are: DATE/TIME: 2002/ 8/31 24: 0 RCHRES : 1 RELERR STORS STOR MATIN MATDIF -2.466E-02 0.00000 0.0000E+00 0.00000 -3.084E-09 Where: RELERR is the relative error (ERROR/REFVAL). ERROR is (STOR-STORS) - MATDIF. REFVAL is the reference value (STORS+MATIN). STOR is the storage of material in the processing unit (land-segment or reach/reservior) at the end of the present interval. STORS is the storage of material in the pu at the start of the present printout reporting period. MATIN is the total inflow of material to the pu during the present printout reporting period. MATDIF is the net inflow (inflow-outflow) of material to the pu during the present printout reporting period. ERROR/WARNING ID: 238 1 The continuity error reported below is greater than 1 part in 1000 and is therefore considered high. Did you specify any "special actions"? If so, they could account for it. Relevant data are: Moorman Property 6/21/2017 8:59:35 AM Page 33 DATE/TIME: 2006/ 7/31 24: 0 RCHRES : 1 RELERR STORS STOR MATIN MATDIF -8.678E-03 0.00000 0.0000E+00 0.00000 -8.786E-09 Where: RELERR is the relative error (ERROR/REFVAL). ERROR is (STOR-STORS) - MATDIF. REFVAL is the reference value (STORS+MATIN). STOR is the storage of material in the processing unit (land-segment or reach/reservior) at the end of the present interval. STORS is the storage of material in the pu at the start of the present printout reporting period. MATIN is the total inflow of material to the pu during the present printout reporting period. MATDIF is the net inflow (inflow-outflow) of material to the pu during the present printout reporting period. Moorman Property 6/21/2017 8:59:35 AM Page 34 Disclaimer Legal Notice This program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright © by : Clear Creek Solutions, Inc. 2005-2017; All Rights Reserved. Clear Creek Solutions, Inc. 6200 Capitol Blvd. Ste F Olympia, WA. 98501 Toll Free 1(866)943-0304 Local (360)943-0304 www.clearcreeksolutions.com Site Planning Civil Engineering Project Management Land Development Consulting APPENDIX C STORMFILTER DETAILS Size and Cost Estimate 11835 NE Glenn Widing Dr., Portland OR 97220 Toll-free: 800.548.4667 Fax: 800.561.1271 ©2012 Contech Engineered Solutions LLC www.conteches.com Page 1 of 1 TS-P027 Prepared by Mike Gillette on June 20, 2017 Moorman Property – Stormwater Treatment System Renton, WA Information provided: • Presiding agency = City of Renton Structure ID SFCB Water Quality Flow Rate (cfs) 0.019 Peak Flow Rate (cfs) 0.194 Number of cartridges 1 Cartridge flow rate (gpm) 11.25 Media type ZPG Structure size Steel Catch Basin Approximate Price $7,000 Assumptions: • Media = ZPG cartridges • Cartridge flow rate = 11.25 gpm • Drop required from inlet to outlet = 3.05’ minimum Size and cost estimates: The StormFilter is a flow-based system, and is therefore sized by calculating the peak water quality flow rate associated with the design storm. The water quality flow rate was calculated by the consulting engineer using WWHM and was provided to Contech Engineered Solutions LLC for the purposes of developing this estimate. The StormFilter for this site was sized based on the above water quality flow rate. To accommodate this flow rate, Contech Engineered Solutions recommends using a (1) – 27” cartridge catch basin StormFilter. The estimated cost of this system is shown in the above table; this estimate includes a complete system delivered to the job site. The final system cost will depend on the actual depth of the units and whether extras like doors rather than castings are specified. The contractor is responsible for setting the catch basin StormFilter and all external plumbing. Typically the catch basin StormFilter has an internal bypass capacity of 1.0 cfs. Since the peak discharge is not expected to exceed this rate, a high-flow bypass upstream of the StormFilter system is not required. CONTECH Stormwater Solutions Inc. Engineer:MSG Date 6/20/2017 Site Information SFCB Project Name Moorman Property Project State Washington Project Location Renton Drainage Area, Ad 0.37 ac Impervious Area, Ai 0.10 ac Pervious Area, Ap 0.27 % Impervious 27% Runoff Coefficient, Rc 0.29 Water quality flow 0.019 cfs Peak storm flow 0.194 cfs Filter System Filtration brand StormFilter Cartridge height 27 in Specific Flow Rate 1.00 gpm/ft2 Flow rate per cartridge 11.25 gpm SUMMARY Number of Cartridges 1 Determining Number of Cartridges for Flow Based Systems ©2006 CONTECH Stormwater Solutions contechstormwater.com 1 of 1 Site Planning Civil Engineering Project Management Land Development Consulting APPENDIX D LAND USE SUMMARIES Site Impervious 49.3% Lot Total Area (SF) Assumed % Impervious Imp. Coverage (SF) Till Grass Coverage (SF) Lot 1 5486 65% 3565.9 1920 Lot 2 5088 65% 3307.2 1781 Lot 3 8138 65% 5289.7 2848 Tract A 2111 ‐ 2111 0 Landscape Tract 891 ‐ 0 891 Total 21714 10707.9 11006 Area Total Area (SF) Assumed % Impervious Imp. Coverage (SF) Till Grass Coverage (SF) Bypass Basin 2602 1870 732 Total 2602 1870 732 Land Use Worksheet Project: Moorman Property, Renton Site Planning Civil Engineering Project Management Land Development Consulting APPENDIX E CONVEYANCE CALCULATIONS Site Planning Civil Engineering Project Management Land Development Consulting APPENDIX F OFFSITE ANALYSIS Site Planning Civil Engineering Project Management Land Development Consulting Figure 6 – Offsite Drainage Map OFF-SITE ANALYSIS DRAINAGE SYSTEM TABLE SURFACE WATER DESIGN MANUAL, CORE REQUIREMENT #2 Basin: Black River Subbasin Name: Duwamish – Green River Subbasin Number: Symbol Drainage Component Type, Name, and Size Drainage Component Description Slope Distance from site discharge Existing Problems Potential Problems Observations of field inspector, resource reviewer, or resident see map Type: sheet flow, swale, stream, channel, pipe, pond; Size: diameter, surface area drainage basin, vegetation, cover, depth, type of sensitive area, volume % ¼ ml = 1,320 ft. constrictions, under capacity, ponding, overtopping, flooding, habitat or organism destruction, scouring, bank sloughing, sedimentation, incision, other erosion tributary area, likelihood of problem, overflow pathways, potential impacts A Sheet Flow Vegetated Surface 0-15% 0ft-13ft None Observed None Observed - B 12” CPEP Pipe Existing SD System 5.8% 13ft-29ft None Observed None Observed - C 18” CPEP Pipe Existing SD System 0.04% 29ft-80ft None Observed None Observed - D 18” CPEP Pipe Existing SD System 0.6% 80ft-295ft +ft None Observed None Observed - E 18” CPEP Pipe Existing SD System 1.1% 295ft-344ft None Observed None Observed - F Existing Pipe Existing SD System - 344ft-399ft None Observed None Observed No more pipe data available. S 19th Street slopes steeply to the West. G Existing Pipe Existing SD System - 399ft-649ft None Observed None Observed See above. H Existing Pipe Existing SD System - 649ft-759ft None Observed None Observed See above. I Existing Pipe Existing SD System - 759ft-879ft None Observed None Observed See above. J Existing Pipe Existing SD System - 879ft-978ft None Observed None Observed See above. K Stream Via Outfall - 978ft-+1320ft None Observed None Observed Stream flows into Rolling Hills Creek past the quarter mile marker. 1/1/05 Site Planning Civil Engineering Project Management Land Development Consulting Photo #1: Looking southeast from Shattuck Ave S at the northwest corner of the project site where runoff leaves the site and enters a catch basin on the east side of Shattuck Ave S. Photo #2: Looking north along Shattuck Ave S where runoff enters the underground storm main along the west side of Shattuck Ave S. Site Planning Civil Engineering Project Management Land Development Consulting Photo #3: Looking east down S 19th St where it intersects Shattuck Ave where the storm main redirects the flow to the east. Photo #4: Looking east down S 19th St. The Storm main continues towards the end of S 19th St. Site Planning Civil Engineering Project Management Land Development Consulting Photo #5: Looking past the end of S 19th St. The storm main continues towards the outfall and Rolling Hills Creek.