Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
01 TIR
STORM DRAINAGE REPORT For City File #19-101302-00-SU 2200 SW 320th Street Federal Way, 98023 Applicant: Yuan Family Holding 2018 PR 10906 80th Pl NE Kirkland, WA 98034 Engineer: Ted Dimof, PE License No. 36024 Bush, Roed and Hitchings 2009 Minor Avenue E Seattle, WA 98102 (206) 323-4144 Date: February 28th, 2020 Page | 2 Table of Contents 1.0 – PROJECT OVERVIEW ......................................................................................................................... 4 2.0 – CONDITIONS AND REQUIREMENTS SUMMARY ......................................................................... 11 3.0 – OFFSITE ANALYSIS ........................................................................................................................... 13 3.1 – UPSTREAM ANALYSIS ..................................................................................................................................... 13 3.2 – DOWNSTREAM ANALYSIS .............................................................................................................................. 13 4.0 – FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN ............................. 15 4.1 – EXISTING SITE HYDROLOGY (PART A) ........................................................................................................... 15 4.2 – DEVELOPED SITE HYDROLOGY (PART B) ...................................................................................................... 15 4.3 – PERFORMANCE STANDARDS (PART C) ......................................................................................................... 16 4.4 – FLOW CONTROL SYSTEM (PART D) ............................................................................................................... 18 4.5 – WATER QUALITY SYSTEM (PART E) ............................................................................................................... 19 5.0 – CONVEYANCE SYSTEM ANALYSIS AND DESIGN .......................................................................... 20 6.0 – SPECIAL REPORTS AND STUDIES ................................................................................................... 20 7.0 – OTHER PERMITS .............................................................................................................................. 20 8.0 – CSWPP ANALYSIS AND DESIGN ..................................................................................................... 20 9.0 – BOND QUANTITIES, FACILITY SUMMARIES, AND DECLARATION OF COVENANT .................. 20 10.0 – OPERATIONS AND MAINTENANCE MANUAL............................................................................ 20 List of Figures Figure 1.1 TIR Worksheet ......................................................................................................................................... 5 Figure 1.2 Site Location .......................................................................................................................................... 10 Figure 3.1 Downstream Flow Path ......................................................................................................................... 13 Figure 4.1 Flow Control Map .................................................................................................................................. 16 Figure 4.2 Water Quality Map ................................................................................................................................. 17 Page | 3 Appendices Appendix A Stormwater Basin Maps Figure 1 – Pre-Developed Basins and Site Areas Figure 2 – Developed Basins and Site Areas Appendix B Flow Control Calculations Appendix C Water Quality Calculations Appendix D TESC Plan Sheets Appendix E Stormwater Plan Sheets Appendix F Bond Quantities Worksheet Appendix G Operations and Maintenance Manual Page | 4 1.0 – PROJECT OVERVIEW The site address is located at 2200 SW 320th St, Federal Way, in unincorporated King County, parcel numbers 1321039002 and 1321039091. The project proposes to subdivide the existing two parcels into individual, smaller lots for the construction of detached single units. The zoning for this project is RS 5.0. The size of the site is 91,578 SF (2.1 acres). Existing Conditions: The project is located in the Lower Puget Sound Basin. The site is benched, with the south half of the site sitting approximately 15 to 20 feet above the north half of the site. The site is undeveloped with the existing vegetation mostly trees and brushes There are no critical areas within the vicinity of the site. Post-Developed Conditions: The project will clear the entire 2.1 acres of the site, including 0.5 acres of off-site, full-depth disturbance in the right-of-way. The total site after development will be 2.1 acres. See Section 4.0 for a detailed description the drainage basins. The proposed site will be 50% impervious, including roofs, driveways, sidewalks, and roadway. The site will implement two infiltrating stormwater detention facilities to the conservation flow control standard, and water quality to the Enhanced Basic standard. Stormwater discharge will be to the existing pubic stormwater drainage system located in SW 320th Street. Page | 5 Figure 1.1 – Technical Information Report (TIR) Worksheet, page 1 Page | 6 Figure 1.1 – Technical Information Report (TIR) Worksheet, page 2 Page | 7 Figure 1.1– Technical Information Report (TIR) Worksheet, page 3 Page | 8 Figure 1.1 – Technical Information Report (TIR) Worksheet, page 4 Page | 9 Figure 1.1 – Technical Information Report (TIR) Worksheet, page 5 Page | 10 Site Location: The site is located in Federal Way in unincorporated King County at the corner of SW 320th Street and 21st Ave SW. See Figure 1.2 below. Figure 1.2 – Site Location Soils: The project site is approximately 2.1 acres and is completely undeveloped and forested. The north and west sides of the site slope from 15% to 45%; while the rest of the site slopes approximately 5% to 10%. The soils consist of medium dense to dense recessional outwash sands and gravels. Native soils may also be classified chiefly as extremely to very gravelly coarse sand with fines contents ranging from 1.7 to 4.1 percent. The native sands and gravels are considered favorable for the infiltration of onsite stormwater. See the geotechnical report for details. PROJECT SITE Page | 11 2.0 – CONDITIONS AND REQUIREMENTS SUMMARY Stormwater Code and Engineering Standards: The design of the facilities conforms to the King County 2016 Surface Water Manual (KCSWM) and the City of Federal Way Addendum to the 2016 KCSWM. Core Requirements: 1. Discharge at Natural Location: The entirety of the existing sites discharges into the public storm drainage system within the Lower Puget Sound Basin towards Arbor Lake. There are two natural discharge points that converge within 1 mile downstream. All of the site stormwater is proposed to preserve the natural discharge location. 2. Offsite Analysis: A Level 1 Offsite Analysis was conducted. This analysis is detailed in Section 3.0 of this report. 3. Flow Control: The site is located within a conservation flow control area and no downstream problems have been identified. Therefore, the flow control systems have been sized and designed for Level 2 Detention. WWHM12 has been used for calculations. Results and a discussion are presented in Section 4.0 of this report. 4. Conveyance System: The majority of proposed site drainage system collects drainage via catch basin inlets through tight lined pipe and into onsite detention/infiltration systems and water quality media cartridges. Discharge will then be routed to the public drainage system. 5. Erosion and Sediment Control: A TESC plan will be developed to contain sediment and prevent erosion and will be included in this report upon completion. 6. Maintenance and Operations: An operations and maintenance manual for the drainage facilities will be included in Appendix G of this report upon completion. 7. Financial Liability: The project will provide all King County bonding and/or assignment of savings as required for the development’s construction and warranty periods. 8. Water Quality: The project is required to provide enhanced water quality treatment for all new and replaced pollution generating surfaces. Stormwater treatment will be provided pre-detention. Page | 12 Special Requirements: 1. Other Adopted Area-Specific Requirements: No other area specific requirements are in place. 2. Flood Hazard Area Delineation: The project is not within a flood hazard area. 3. Flood Protection Facilities: This project is not within a flood hazard area. 4. Source Control: No source control measures are required. 5. Oil Control: The site is primarily a residential site with no proposed commercial space. Therefore, the site is not considered a high-use site and no oil control is required. Page | 13 3.0 – OFFSITE ANALYSIS 3.1 – UPSTREAM ANALYSIS The upstream sides of the site on SW 320th Street and 21st Ave SW are completely contained within the public streets. 3.2 – DOWNSTREAM ANALYSIS A level 1 downstream analysis was conducted. See Figure 3.1 below. Figure 3.1 – Downstream Flow Path Page | 14 The existing site has two separate drainage basins. Drainage on 21st Ave SW and the eastern portion of the site flow to the north, labeled Threshold Discharge Area 1, while the rest of the site, along with SW 320th St flows to the west, which is labeled Threshold Discharge Area 2. The following narrative refers to Figure 1 in Appendix A. Threshold Discharge Area 1 has one discharge point. The drainage from 21st Ave SW is contained within the right-of-way and flows north along the gutter before eventually entering the public storm drainage system through a catch basin inlet. Examining the records from City of Federal Way for the storm drainage, the drainage flows north along 21st Ave SW, and then goes east towards SW Dash point Rd. From there, the downstream route takes the flow generally west for about 0.6 miles and eventually converges with flows from Threshold Discharge Area #2. Threshold Discharge Area 2 has one basic discharge point. SW 320th St and the western portion of the site drain to catch basins in the gutter of that street, which drain west past the site for 0.2 miles and discharge to a ditch and flow for 0.6 miles where it converges with the flows from Threshold Discharge Area 1. From the point where all of the drainage converges downstream, the drainage then flows to the northwest about 0.5 miles towards the Puget Sound. Both downstream flow paths were walked during a site visit, and there was no visual evidence of drainage overtopping catch basins or erosion from the City’s storm system. King County iMap was used to check for flood issues, sensitive areas, basin maps, etc. The site is not located within a FEMA floodplain or any of the DDES designated sensitive areas. The iMap does list a few drainage complaints along the downstream flow path, but they do not appear to be directly related to the public storm drain system that our discharge flows will travel through. Page | 15 4.0 – FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN 4.1 – EXISTING SITE HYDROLOGY (PART A) The existing site hydrology consists of 1.5 acres of pervious surface (forest) and 0.6 acres of impervious surface (building foundation, wood shed, and pavement), totaling 2.1 acres. Discharge paths are described in Section 3.0. The conservation flow control standard requires the existing site to be modeled to historical standards, which is forested. Therefore, the existing site will be modeled as till forest. 4.2 – DEVELOPED SITE HYDROLOGY (PART B) The proposed site will replace the on-site drainage basins, capturing runoff that was sheet-flowing onto adjacent properties and routing it through the detention systems. A total of 0.33 acres of impervious surface and 0.30 acres of pervious landscaping will be captured in an infiltrating detention pond in basin 1, and a total of 0.70 acres of impervious surface and 0.71 acres of pervious landscaping will be captured in an infiltrating detention pond in basin 2 (See Figure 2 in Appendix A). These ponds then discharge into the public storm drainage system in the right-of-way. Page | 16 4.3 – PERFORMANCE STANDARDS (PART C) Flow Control Requirements: The flow control standard for the site was determined from the City of Federal Way Flow Control Map. As shown in Figure 4.1 below, the site lies within the conservation flow control area. Target areas include all new and replaced impervious and pervious surfaces that are not fully dispersed. Detention shall match historic site condition for duration between 50% of the 2-yr up to the full 50-yr peak flow, as well as matching the historic 2 year and 10 year peaks. Figure 4.1 – Flow Control Map Flow Control BMP Requirements: The site will have greater than 7,000 SF of land disturbing activity, therefore, will be required to mitigate through Flow Control BMPs. The project proposes two open ponds that will infiltrate more than 95% of the site’s stormwater runoff as seen in the WWHM reports in Appendix B. These BMPs will have flow control standpipes to detain stormwater during high flow events. Site Page | 17 Conveyance System Capacity Requirements: The site will have all new piped conveyance system. Per Section 1.2.4.1 of the KCSWM, piped systems must be designed at a minimum to carry the 25-year peak flow, and to ensure that 100-year runoff events do not cause severe flooding or severe erosion problems. Water Quality Treatment Requirements: The site lies within an enhanced basic water quality treatment area, per Figure 4.2 below. Target surfaces include all new and replaced PGIS and PGPS on the proposed site. Figure 4.2 – Water Quality Map Site Page | 18 4.4 – FLOW CONTROL SYSTEM (PART D) The flow control systems were designed using WWHM2012 to the conservation flow control standard. Refer to the tables below for a summary of each detention system. See Figure 2 in Appendix A for impervious surface calculations and Appendix B for detailed WWHM2012 calculations. The conservation flow control standard requires that developed flow durations match the historic flows between 50% of the 2-yeark peak flow up to the full 50-year flow. See Figure 4.3 for the flow duration curve showing compliance with that standard. In addition, the conservation flow control standard requires that peak developed flows do not exceed historical peak flows for the 2-year and 10-year storms. See Table 4.2 & 4.4 below. Table 4.1 – Detention Pond Summary (Basin 1) Contributing Basins Area 1 Overflow H= 3.0 ft D= 8.0 in Historic Conditions 0.63 acres Till Forest Rectangular Notch H= 2.50 ft W= 0.005 in Modelled Developed Conditions 0.33 acres Impervious 0.30 acres Till Grass Orifice H= 0.00 ft D= 0.25 in Facility Dimensions 5’W x 5’L x 4’H Side Slopes 3:1 Infiltration Rate 20 in/hr Table 4.2 – Detention Peak Summary (Basin 1) Historic 2-year Peak Flow 0.019 cfs Historic 10-year Peak Flow 0.054 cfs Developed 2-year Peak Flow 0.016 cfs Developed 10-year Peak Flow 0.046 cfs Table 4.3 – Detention Pond Summary (Basin 2) Contributing Basins Area 2 Overflow H= 4.0 ft D= 8.0 in Historic Conditions 1.41 acres Till Forest Rectangular Notch H= 2.50 ft W= 0.005 in Modelled Developed Conditions 0.70 acres Impervious 0.71 acres Till Grass Orifice H= 0.00 ft D= 0.25 in Facility Dimensions 10’W x 10’L x 5’H Side Slopes 3:1 Infiltration Rate 10 in/hr Page | 19 Table 4.4 – Detention Peak Summary (Basin 2) Historic 2-year Peak Flow 0.042 cfs Historic 10-year Peak Flow 0.121 cfs Developed 2-year Peak Flow 0.016 cfs Developed 10-year Peak Flow 0.092 cfs 4.5 – WATER QUALITY SYSTEM (PART E) The project is required to treat all target PGIS and PGPS surfaces to the enhanced basic standard. A stormwater treatment system will be proposed pre-detention. Basin 1: The standard flow rate calculated from WWHM2012 for 0.16 acres of impervious surface and 0.06 acres of pervious landscaping is 0.0256 cfs. Converting this to gpm gives a flow rate of 11.5 gpm. From the Department of Ecology (TAPE) enhanced treatment list, the MWS-Linear Modular Wetland system was sized at 1 gmp per square foot. Per the manufacturer, the MWS-L-4-4 with 23 SF of wetland media surface area should be sufficient size meet the 11.5 gpm of on-site flow. Basin 2: The standard flow rate calculated from WWHM2012 for 0.29 acres of impervious surface and 0.05 acres of pervious landscaping is 0.0466 cfs. Converting this to gpm gives a flow rate of 20.9 gpm. From the Department of Ecology (TAPE) enhanced treatment list, the MWS-Linear Modular Wetland system was sized at 1 gmp per square foot. Per the manufacturer, the MWS-L-4-4 with 23 SF of wetland media surface area should be sufficient size meet the 20.9 gpm of on-site flow. Full water quality calculations will be provided when completed. Page | 20 5.0 – CONVEYANCE SYSTEM ANALYSIS AND DESIGN Pipe Sizing: The proposed stormwater conveyance system will be designed to contain the 100-year storm. 6.0 – SPECIAL REPORTS AND STUDIES Geotechnical Report: Geotechnical Letter: Earth Solutions NW LLC Earth Solutions NW LLC Project No. ES-6375 Project No. ES-6375.01 December 7th, 2018 February 11th, 2020 7.0 – OTHER PERMITS N/A 8.0 – CSWPP ANALYSIS AND DESIGN ESC measures listed in the 2016 KCSWDM will be evaluated for use on the proposed site and will be included in the report upon completion. 9.0 – BOND QUANTITIES, FACILITY SUMMARIES, AND DECLARATION OF COVENANT A bond quantities worksheet will be provided in Appendix F of this report upon completion. 10.0 – OPERATIONS AND MAINTENANCE MANUAL An operations and maintenance manual for the drainage facilities will be provided in Appendix G of this report upon completion. APPENDIX A Stormwater Basin Maps Figure 1 – Pre-developed Basins and Site Areas Figure 2 – Developed Basins and Site Areas TRESHOLD DISCHARGE AREA 1 0.84 AC FOREST TRESHOLD DISCHARGE AREA 2 1.26 AC FOREST 98102-3513BUSH, ROED & HITCHINGS, INC.2009 MINOR AVE. EASTSEATTLE, WashingtonLAND SURVEYORS & CIVIL ENGINEERSFAX# (206) 323-7135(206) 323-41441-800-935-0508PRE-DEVELOPED BASINS & SITE AREAS2200 SW 320TH ST SKYLINE PROPERTIES INC.FEDERAL WAYKING COUNTYWASHINGTONSCALE IN FEET 0 20 1"=20' 20 10 40 BASIN 1 SITE AREAS:BASIN 2 SITE AREAS:BASIN 2BASIN 198102-3513BUSH, ROED & HITCHINGS, INC.2009 MINOR AVE. EASTSEATTLE, WashingtonLAND SURVEYORS & CIVIL ENGINEERSFAX# (206) 323-7135(206) 323-41441-800-935-0508DEVELOPED BASINS & SITE AREAS2200 SW 320TH ST SKYLINE PROPERTIES INC.FEDERAL WAYKING COUNTYWASHINGTONSCALE IN FEET 0 20 1"=20' 20 10 40 APPENDIX B Flow Control Calculations WWHM2012 PROJECT REPORT 2020-02-07 BASIN 2 POND 2/18/2020 11:51:59 AM Page 2 General Model Information Project Name: Site Name: Site Address: City: Report Date:2/18/2020 Gage:Seatac Data Start:1948/10/01 Data End:2009/09/30 Timestep:15 Minute Precip Scale:1.000 Version Date:2019/09/13 Version:4.2.17 POC Thresholds Low Flow Threshold for POC1:50 Percent of the 2 Year High Flow Threshold for POC1:50 Year 2020-02-07 BASIN 2 POND 2/18/2020 11:51:59 AM Page 3 Landuse Basin Data Predeveloped Land Use Basin 1 Bypass:No GroundWater:No Pervious Land Use acre C, Forest, Mod 0.63 Pervious Total 0.63 Impervious Land Use acre Impervious Total 0 Basin Total 0.63 Element Flows To: Surface Interflow Groundwater 2020-02-07 BASIN 2 POND 2/18/2020 11:51:59 AM Page 4 Mitigated Land Use Basin 1 Bypass:No GroundWater:No Pervious Land Use acre C, Lawn, Flat 0.3 Pervious Total 0.3 Impervious Land Use acre SIDEWALKS FLAT 0.33 Impervious Total 0.33 Basin Total 0.63 Element Flows To: Surface Interflow Groundwater Trapezoidal Pond 1 Trapezoidal Pond 1 2020-02-07 BASIN 2 POND 2/18/2020 11:51:59 AM Page 5 Routing Elements Predeveloped Routing 2020-02-07 BASIN 2 POND 2/18/2020 11:51:59 AM Page 6 Mitigated Routing Trapezoidal Pond 1 Bottom Length:5.00 ft. Bottom Width:5.00 ft. Depth:4 ft. Volume at riser head:0.0156 acre-feet. Infiltration On Infiltration rate:20 Infiltration safety factor:1 Wetted surface area On Total Volume Infiltrated (ac-ft.):72.17 Total Volume Through Riser (ac-ft.):3.308 Total Volume Through Facility (ac-ft.):75.478 Percent Infiltrated:95.62 Total Precip Applied to Facility:0.192 Total Evap From Facility:0.033 Side slope 1:3 To 1 Side slope 2:3 To 1 Side slope 3:3 To 1 Side slope 4:3 To 1 Discharge Structure Riser Height:3 ft. Riser Diameter:8 in. Notch Type:Rectangular Notch Width:0.005 ft. Notch Height:2.500 ft. Orifice 1 Diameter:0.25 in.Elevation:0 ft. Element Flows To: Outlet 1 Outlet 2 Pond Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)Infilt(cfs) 0.0000 0.000574 0.000000 0.000 0.000 0.0444 0.000637 0.000027 0.000 0.012 0.0889 0.000703 0.000057 0.000 0.014 0.1333 0.000772 0.000089 0.000 0.015 0.1778 0.000845 0.000125 0.000 0.017 0.2222 0.000921 0.000165 0.000 0.018 0.2667 0.001000 0.000207 0.000 0.020 0.3111 0.001082 0.000254 0.000 0.021 0.3556 0.001168 0.000304 0.001 0.023 0.4000 0.001257 0.000358 0.001 0.025 0.4444 0.001349 0.000415 0.001 0.027 0.4889 0.001445 0.000478 0.001 0.029 0.5333 0.001544 0.000544 0.001 0.031 0.5778 0.001646 0.000615 0.001 0.033 0.6222 0.001751 0.000690 0.002 0.035 0.6667 0.001860 0.000771 0.002 0.037 0.7111 0.001971 0.000856 0.003 0.039 0.7556 0.002086 0.000946 0.003 0.042 0.8000 0.002205 0.001041 0.004 0.044 0.8444 0.002326 0.001142 0.004 0.046 0.8889 0.002451 0.001248 0.005 0.049 0.9333 0.002579 0.001360 0.006 0.052 2020-02-07 BASIN 2 POND 2/18/2020 11:51:59 AM Page 7 0.9778 0.002711 0.001477 0.006 0.054 1.0222 0.002846 0.001601 0.007 0.057 1.0667 0.002983 0.001730 0.008 0.060 1.1111 0.003125 0.001866 0.008 0.063 1.1556 0.003269 0.002008 0.009 0.065 1.2000 0.003417 0.002157 0.010 0.068 1.2444 0.003568 0.002312 0.011 0.072 1.2889 0.003722 0.002474 0.011 0.075 1.3333 0.003880 0.002643 0.012 0.078 1.3778 0.004041 0.002819 0.013 0.081 1.4222 0.004205 0.003002 0.014 0.084 1.4667 0.004372 0.003193 0.014 0.088 1.5111 0.004542 0.003391 0.015 0.091 1.5556 0.004716 0.003597 0.016 0.095 1.6000 0.004893 0.003810 0.017 0.098 1.6444 0.005074 0.004032 0.018 0.102 1.6889 0.005258 0.004261 0.019 0.106 1.7333 0.005444 0.004499 0.020 0.109 1.7778 0.005635 0.004745 0.021 0.113 1.8222 0.005828 0.005000 0.022 0.117 1.8667 0.006025 0.005263 0.023 0.121 1.9111 0.006225 0.005536 0.031 0.125 1.9556 0.006428 0.005817 0.033 0.129 2.0000 0.006635 0.006107 0.034 0.133 2.0444 0.006844 0.006407 0.036 0.138 2.0889 0.007057 0.006716 0.037 0.142 2.1333 0.007274 0.007034 0.039 0.146 2.1778 0.007493 0.007362 0.040 0.151 2.2222 0.007716 0.007700 0.042 0.155 2.2667 0.007942 0.008048 0.043 0.160 2.3111 0.008172 0.008406 0.045 0.164 2.3556 0.008404 0.008775 0.047 0.169 2.4000 0.008640 0.009153 0.048 0.174 2.4444 0.008879 0.009543 0.050 0.179 2.4889 0.009122 0.009943 0.052 0.184 2.5333 0.009367 0.010353 0.053 0.188 2.5778 0.009616 0.010775 0.055 0.193 2.6222 0.009868 0.011208 0.057 0.199 2.6667 0.010124 0.011653 0.058 0.204 2.7111 0.010383 0.012108 0.060 0.209 2.7556 0.010645 0.012576 0.062 0.214 2.8000 0.010910 0.013055 0.064 0.220 2.8444 0.011179 0.013545 0.066 0.225 2.8889 0.011450 0.014048 0.067 0.230 2.9333 0.011725 0.014563 0.069 0.236 2.9778 0.012004 0.015091 0.071 0.242 3.0222 0.012285 0.015630 0.095 0.247 3.0667 0.012570 0.016183 0.193 0.253 3.1111 0.012858 0.016748 0.327 0.259 3.1556 0.013150 0.017326 0.477 0.265 3.2000 0.013444 0.017917 0.620 0.271 3.2444 0.013742 0.018521 0.738 0.277 3.2889 0.014044 0.019138 0.820 0.283 3.3333 0.014348 0.019769 0.872 0.289 3.3778 0.014656 0.020414 0.933 0.295 3.4222 0.014967 0.021072 0.982 0.301 3.4667 0.015281 0.021744 1.028 0.308 3.5111 0.015599 0.022430 1.073 0.314 2020-02-07 BASIN 2 POND 2/18/2020 11:51:59 AM Page 8 3.5556 0.015919 0.023131 1.116 0.321 3.6000 0.016243 0.023846 1.157 0.327 3.6444 0.016571 0.024575 1.196 0.334 3.6889 0.016901 0.025319 1.234 0.340 3.7333 0.017235 0.026077 1.271 0.347 3.7778 0.017572 0.026851 1.307 0.354 3.8222 0.017913 0.027639 1.342 0.361 3.8667 0.018256 0.028443 1.376 0.368 3.9111 0.018603 0.029262 1.409 0.375 3.9556 0.018953 0.030097 1.441 0.382 4.0000 0.019307 0.030947 1.472 0.389 4.0444 0.019663 0.031813 1.503 0.396 2020-02-07 BASIN 2 POND 2/18/2020 11:51:59 AM Page 9 Analysis Results POC 1 + Predeveloped x Mitigated Predeveloped Landuse Totals for POC #1 Total Pervious Area:0.63 Total Impervious Area:0 Mitigated Landuse Totals for POC #1 Total Pervious Area:0.3 Total Impervious Area:0.33 Flow Frequency Method:Log Pearson Type III 17B Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.018758 5 year 0.030737 10 year 0.038439 25 year 0.047602 50 year 0.053948 100 year 0.059875 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.015622 5 year 0.023105 10 year 0.02909 25 year 0.037947 50 year 0.045569 100 year 0.05414 Annual Peaks Annual Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1949 0.022 0.027 1950 0.026 0.027 1951 0.041 0.016 1952 0.013 0.011 1953 0.010 0.011 1954 0.016 0.012 1955 0.025 0.015 1956 0.021 0.014 1957 0.017 0.017 1958 0.018 0.011 2020-02-07 BASIN 2 POND 2/18/2020 11:52:30 AM Page 10 1959 0.016 0.009 1960 0.028 0.014 1961 0.016 0.014 1962 0.010 0.010 1963 0.013 0.014 1964 0.019 0.014 1965 0.013 0.017 1966 0.012 0.012 1967 0.029 0.021 1968 0.016 0.019 1969 0.016 0.014 1970 0.013 0.013 1971 0.014 0.016 1972 0.031 0.021 1973 0.014 0.009 1974 0.015 0.013 1975 0.021 0.017 1976 0.015 0.012 1977 0.002 0.011 1978 0.013 0.018 1979 0.008 0.017 1980 0.037 0.024 1981 0.011 0.016 1982 0.024 0.037 1983 0.020 0.020 1984 0.012 0.011 1985 0.007 0.016 1986 0.032 0.015 1987 0.028 0.017 1988 0.011 0.012 1989 0.007 0.012 1990 0.068 0.047 1991 0.036 0.039 1992 0.015 0.011 1993 0.014 0.007 1994 0.005 0.008 1995 0.021 0.012 1996 0.048 0.018 1997 0.037 0.017 1998 0.009 0.014 1999 0.040 0.044 2000 0.014 0.016 2001 0.003 0.013 2002 0.017 0.024 2003 0.025 0.014 2004 0.026 0.044 2005 0.020 0.014 2006 0.022 0.012 2007 0.051 0.042 2008 0.063 0.043 2009 0.029 0.019 Ranked Annual Peaks Ranked Annual Peaks for Predeveloped and Mitigated. POC #1 Rank Predeveloped Mitigated 1 0.0679 0.0475 2 0.0626 0.0438 3 0.0513 0.0436 2020-02-07 BASIN 2 POND 2/18/2020 11:52:30 AM Page 11 4 0.0476 0.0434 5 0.0410 0.0420 6 0.0403 0.0389 7 0.0367 0.0367 8 0.0366 0.0269 9 0.0360 0.0265 10 0.0321 0.0238 11 0.0311 0.0237 12 0.0292 0.0213 13 0.0288 0.0211 14 0.0284 0.0195 15 0.0283 0.0191 16 0.0264 0.0188 17 0.0256 0.0184 18 0.0255 0.0177 19 0.0248 0.0175 20 0.0238 0.0174 21 0.0221 0.0172 22 0.0216 0.0169 23 0.0213 0.0165 24 0.0206 0.0165 25 0.0205 0.0163 26 0.0203 0.0162 27 0.0196 0.0162 28 0.0188 0.0161 29 0.0184 0.0157 30 0.0166 0.0155 31 0.0166 0.0152 32 0.0162 0.0144 33 0.0160 0.0143 34 0.0158 0.0142 35 0.0158 0.0142 36 0.0156 0.0141 37 0.0153 0.0141 38 0.0152 0.0141 39 0.0147 0.0138 40 0.0144 0.0136 41 0.0143 0.0133 42 0.0143 0.0132 43 0.0138 0.0127 44 0.0133 0.0124 45 0.0129 0.0119 46 0.0128 0.0119 47 0.0127 0.0119 48 0.0125 0.0117 49 0.0122 0.0117 50 0.0120 0.0115 51 0.0115 0.0115 52 0.0112 0.0113 53 0.0104 0.0111 54 0.0097 0.0110 55 0.0090 0.0110 56 0.0078 0.0109 57 0.0074 0.0105 58 0.0073 0.0092 59 0.0048 0.0091 60 0.0026 0.0083 61 0.0022 0.0069 2020-02-07 BASIN 2 POND 2/18/2020 11:52:30 AM Page 12 2020-02-07 BASIN 2 POND 2/18/2020 11:52:30 AM Page 13 Duration Flows The Facility PASSED Flow(cfs)Predev Mit Percentage Pass/Fail 0.0094 17075 1228 7 Pass 0.0098 15481 1091 7 Pass 0.0103 14093 971 6 Pass 0.0107 12816 876 6 Pass 0.0112 11588 768 6 Pass 0.0116 10540 682 6 Pass 0.0121 9561 604 6 Pass 0.0125 8750 534 6 Pass 0.0130 8031 477 5 Pass 0.0134 7347 423 5 Pass 0.0139 6733 383 5 Pass 0.0143 6190 340 5 Pass 0.0148 5726 310 5 Pass 0.0152 5309 282 5 Pass 0.0157 4924 259 5 Pass 0.0161 4569 242 5 Pass 0.0166 4235 219 5 Pass 0.0170 3951 201 5 Pass 0.0175 3645 189 5 Pass 0.0179 3388 178 5 Pass 0.0184 3133 170 5 Pass 0.0188 2915 157 5 Pass 0.0193 2706 150 5 Pass 0.0197 2490 139 5 Pass 0.0202 2314 130 5 Pass 0.0206 2136 126 5 Pass 0.0211 1973 121 6 Pass 0.0215 1825 110 6 Pass 0.0220 1702 107 6 Pass 0.0224 1577 103 6 Pass 0.0229 1443 100 6 Pass 0.0233 1325 95 7 Pass 0.0238 1232 90 7 Pass 0.0242 1147 87 7 Pass 0.0247 1086 86 7 Pass 0.0251 1020 86 8 Pass 0.0256 947 84 8 Pass 0.0260 887 82 9 Pass 0.0265 825 79 9 Pass 0.0269 761 75 9 Pass 0.0274 725 68 9 Pass 0.0278 675 65 9 Pass 0.0283 623 64 10 Pass 0.0287 589 62 10 Pass 0.0292 549 61 11 Pass 0.0296 506 59 11 Pass 0.0301 469 56 11 Pass 0.0305 427 56 13 Pass 0.0310 388 54 13 Pass 0.0314 356 54 15 Pass 0.0319 328 52 15 Pass 0.0323 298 52 17 Pass 0.0328 270 50 18 Pass 2020-02-07 BASIN 2 POND 2/18/2020 11:52:30 AM Page 14 0.0332 241 50 20 Pass 0.0337 218 46 21 Pass 0.0341 198 42 21 Pass 0.0346 174 40 22 Pass 0.0350 152 38 25 Pass 0.0355 130 36 27 Pass 0.0359 119 32 26 Pass 0.0364 104 27 25 Pass 0.0368 95 26 27 Pass 0.0373 83 25 30 Pass 0.0377 74 24 32 Pass 0.0382 69 23 33 Pass 0.0386 61 19 31 Pass 0.0391 53 16 30 Pass 0.0395 46 15 32 Pass 0.0400 39 14 35 Pass 0.0404 29 13 44 Pass 0.0409 25 13 52 Pass 0.0413 22 13 59 Pass 0.0418 20 13 65 Pass 0.0422 17 10 58 Pass 0.0427 14 10 71 Pass 0.0431 12 8 66 Pass 0.0436 8 5 62 Pass 0.0440 7 2 28 Pass 0.0445 7 2 28 Pass 0.0449 7 2 28 Pass 0.0454 6 2 33 Pass 0.0458 6 2 33 Pass 0.0463 6 2 33 Pass 0.0467 6 2 33 Pass 0.0472 6 2 33 Pass 0.0476 5 0 0 Pass 0.0481 5 0 0 Pass 0.0485 5 0 0 Pass 0.0490 5 0 0 Pass 0.0494 5 0 0 Pass 0.0499 5 0 0 Pass 0.0503 5 0 0 Pass 0.0508 4 0 0 Pass 0.0512 4 0 0 Pass 0.0517 3 0 0 Pass 0.0521 3 0 0 Pass 0.0526 3 0 0 Pass 0.0530 3 0 0 Pass 0.0535 3 0 0 Pass 0.0539 3 0 0 Pass 2020-02-07 BASIN 2 POND 2/18/2020 11:52:30 AM Page 15 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. 2020-02-07 BASIN 2 POND 2/18/2020 11:52:30 AM Page 16 LID Report 2020-02-07 BASIN 2 POND 2/18/2020 11:53:04 AM Page 17 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. 2020-02-07 BASIN 2 POND 2/18/2020 11:53:04 AM Page 18 Appendix Predeveloped Schematic 2020-02-07 BASIN 2 POND 2/18/2020 11:53:05 AM Page 19 Mitigated Schematic 2020-02-07 BASIN 2 POND 2/18/2020 11:53:07 AM Page 20 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 2020-02-07 BASIN 2 POND.wdm MESSU 25 Pre2020-02-07 BASIN 2 POND.MES 27 Pre2020-02-07 BASIN 2 POND.L61 28 Pre2020-02-07 BASIN 2 POND.L62 30 POC2020-02-07 BASIN 2 POND1.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 PERLND 11 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 Basin 1 MAX 1 2 30 9 END DISPLY-INFO1 END DISPLY COPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 END TIMESERIES END COPY GENER OPCODE # # OPCD *** END OPCODE PARM # # K *** END PARM END GENER PERLND GEN-INFO <PLS ><-------Name------->NBLKS Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 11 C, Forest, Mod 1 1 1 1 27 0 END GEN-INFO *** Section PWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *** 11 0 0 1 0 0 0 0 0 0 0 0 0 END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ***************************** PIVL PYR # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ********* 11 0 0 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO 2020-02-07 BASIN 2 POND 2/18/2020 11:53:07 AM Page 21 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 2020-02-07 BASIN 2 POND 2/18/2020 11:53:07 AM Page 22 END IMPLND SCHEMATIC <-Source-> <--Area--> <-Target-> MBLK *** <Name> # <-factor-> <Name> # Tbl# *** Basin 1*** PERLND 11 0.63 COPY 501 12 PERLND 11 0.63 COPY 501 13 ******Routing****** END SCHEMATIC NETWORK <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** COPY 501 OUTPUT MEAN 1 1 48.4 DISPLY 1 INPUT TIMSER 1 <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** END NETWORK RCHRES GEN-INFO RCHRES Name Nexits Unit Systems Printer *** # - #<------------------><---> User T-series Engl Metr LKFG *** in out *** END GEN-INFO *** Section RCHRES*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG *** END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ******************* PIVL PYR # - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR ********* END PRINT-INFO HYDR-PARM1 RCHRES Flags for each HYDR Section *** # - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** END HYDR-PARM1 HYDR-PARM2 # - # FTABNO LEN DELTH STCOR KS DB50 *** <------><--------><--------><--------><--------><--------><--------> *** END HYDR-PARM2 HYDR-INIT RCHRES Initial conditions for each HYDR section *** # - # *** VOL Initial value of COLIND Initial value of OUTDGT *** ac-ft for each possible exit for each possible exit <------><--------> <---><---><---><---><---> *** <---><---><---><---><---> END HYDR-INIT END RCHRES SPEC-ACTIONS END SPEC-ACTIONS FTABLES END FTABLES EXT SOURCES <-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # *** WDM 2 PREC ENGL 1 PERLND 1 999 EXTNL PREC WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC 2020-02-07 BASIN 2 POND 2/18/2020 11:53:07 AM Page 23 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 2020-02-07 BASIN 2 POND 2/18/2020 11:53:07 AM Page 24 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 2020-02-07 BASIN 2 POND.wdm MESSU 25 Mit2020-02-07 BASIN 2 POND.MES 27 Mit2020-02-07 BASIN 2 POND.L61 28 Mit2020-02-07 BASIN 2 POND.L62 30 POC2020-02-07 BASIN 2 POND1.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 PERLND 16 IMPLND 8 RCHRES 1 COPY 1 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 Trapezoidal Pond 1 MAX 1 2 30 9 END DISPLY-INFO1 END DISPLY COPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 END TIMESERIES END COPY GENER OPCODE # # OPCD *** END OPCODE PARM # # K *** END PARM END GENER PERLND GEN-INFO <PLS ><-------Name------->NBLKS Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 16 C, Lawn, Flat 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 *** 16 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 ********* 2020-02-07 BASIN 2 POND 2/18/2020 11:53:07 AM Page 25 16 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 *** 16 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 16 0 4.5 0.03 400 0.05 0.5 0.996 END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 *** # - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP 16 0 0 2 2 0 0 0 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 *** # - # CEPSC UZSN NSUR INTFW IRC LZETP *** 16 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 16 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 *** 8 SIDEWALKS/FLAT 1 1 1 27 0 END GEN-INFO *** Section IWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** 8 0 0 1 0 0 0 END ACTIVITY PRINT-INFO <ILS > ******** Print-flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* 8 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 *** 8 0 0 0 0 0 END IWAT-PARM1 IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC 8 400 0.01 0.1 0.1 END IWAT-PARM2 IWAT-PARM3 <PLS > IWATER input info: Part 3 *** 2020-02-07 BASIN 2 POND 2/18/2020 11:53:07 AM Page 26 # - # ***PETMAX PETMIN 8 0 0 END IWAT-PARM3 IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS 8 0 0 END IWAT-STATE1 END IMPLND SCHEMATIC <-Source-> <--Area--> <-Target-> MBLK *** <Name> # <-factor-> <Name> # Tbl# *** Basin 1*** PERLND 16 0.3 RCHRES 1 2 PERLND 16 0.3 RCHRES 1 3 IMPLND 8 0.33 RCHRES 1 5 ******Routing****** PERLND 16 0.3 COPY 1 12 IMPLND 8 0.33 COPY 1 15 PERLND 16 0.3 COPY 1 13 RCHRES 1 1 COPY 501 17 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 Trapezoidal Pond-005 2 1 1 1 28 0 1 END GEN-INFO *** Section RCHRES*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG *** 1 1 0 0 0 0 0 0 0 0 0 END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ******************* PIVL PYR # - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR ********* 1 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO HYDR-PARM1 RCHRES Flags for each HYDR Section *** # - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** 1 0 1 0 0 4 5 0 0 0 0 0 0 0 0 2 2 2 2 2 END HYDR-PARM1 HYDR-PARM2 # - # FTABNO LEN DELTH STCOR KS DB50 *** <------><--------><--------><--------><--------><--------><--------> *** 2020-02-07 BASIN 2 POND 2/18/2020 11:53:07 AM Page 27 1 1 0.01 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 5.0 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 91 5 Depth Area Volume Outflow1 Outflow2 Velocity Travel Time*** (ft) (acres) (acre-ft) (cfs) (cfs) (ft/sec) (Minutes)*** 0.000000 0.000574 0.000000 0.000000 0.000000 0.044444 0.000637 0.000027 0.000358 0.012842 0.088889 0.000703 0.000057 0.000506 0.014175 0.133333 0.000772 0.000089 0.000619 0.015574 0.177778 0.000845 0.000125 0.000715 0.017039 0.222222 0.000921 0.000165 0.000800 0.018570 0.266667 0.001000 0.000207 0.000876 0.020167 0.311111 0.001082 0.000254 0.000946 0.021829 0.355556 0.001168 0.000304 0.001011 0.023558 0.400000 0.001257 0.000358 0.001073 0.025352 0.444444 0.001349 0.000415 0.001131 0.027212 0.488889 0.001445 0.000478 0.001186 0.029138 0.533333 0.001544 0.000544 0.001339 0.031130 0.577778 0.001646 0.000615 0.001645 0.033187 0.622222 0.001751 0.000690 0.002032 0.035311 0.666667 0.001860 0.000771 0.002480 0.037500 0.711111 0.001971 0.000856 0.002977 0.039755 0.755556 0.002086 0.000946 0.003515 0.042076 0.800000 0.002205 0.001041 0.004089 0.044463 0.844444 0.002326 0.001142 0.004693 0.046916 0.888889 0.002451 0.001248 0.005323 0.049434 0.933333 0.002579 0.001360 0.005976 0.052019 0.977778 0.002711 0.001477 0.006650 0.054669 1.022222 0.002846 0.001601 0.007342 0.057385 1.066667 0.002983 0.001730 0.008049 0.060167 1.111111 0.003125 0.001866 0.008770 0.063014 1.155556 0.003269 0.002008 0.009502 0.065928 1.200000 0.003417 0.002157 0.010244 0.068907 1.244444 0.003568 0.002312 0.010994 0.071953 1.288889 0.003722 0.002474 0.011751 0.075064 1.333333 0.003880 0.002643 0.012514 0.078241 1.377778 0.004041 0.002819 0.013280 0.081484 1.422222 0.004205 0.003002 0.014049 0.084792 1.466667 0.004372 0.003193 0.014819 0.088167 1.511111 0.004542 0.003391 0.015628 0.091607 1.555556 0.004716 0.003597 0.016561 0.095113 1.600000 0.004893 0.003810 0.017513 0.098685 1.644444 0.005074 0.004032 0.018483 0.102323 1.688889 0.005258 0.004261 0.019471 0.106027 1.733333 0.005444 0.004499 0.020477 0.109796 1.777778 0.005635 0.004745 0.021501 0.113632 1.822222 0.005828 0.005000 0.022541 0.117533 1.866667 0.006025 0.005263 0.023599 0.121500 1.911111 0.006225 0.005536 0.031823 0.125533 1.955556 0.006428 0.005817 0.033253 0.129632 2.000000 0.006635 0.006107 0.034705 0.133796 2.044444 0.006844 0.006407 0.036178 0.138027 2.088889 0.007057 0.006716 0.037672 0.142323 2.133333 0.007274 0.007034 0.039186 0.146685 2.177778 0.007493 0.007362 0.040720 0.151113 2.222222 0.007716 0.007700 0.042274 0.155607 2.266667 0.007942 0.008048 0.043847 0.160167 2020-02-07 BASIN 2 POND 2/18/2020 11:53:07 AM Page 28 2.311111 0.008172 0.008406 0.045440 0.164792 2.355556 0.008404 0.008775 0.047052 0.169484 2.400000 0.008640 0.009153 0.048683 0.174241 2.444444 0.008879 0.009543 0.050333 0.179064 2.488889 0.009122 0.009943 0.052001 0.183953 2.533333 0.009367 0.010353 0.053687 0.188907 2.577778 0.009616 0.010775 0.055392 0.193928 2.622222 0.009868 0.011208 0.057114 0.199014 2.666667 0.010124 0.011653 0.058854 0.204167 2.711111 0.010383 0.012108 0.060612 0.209385 2.755556 0.010645 0.012576 0.062386 0.214669 2.800000 0.010910 0.013055 0.064178 0.220019 2.844444 0.011179 0.013545 0.065987 0.225434 2.888889 0.011450 0.014048 0.067813 0.230916 2.933333 0.011725 0.014563 0.069656 0.236463 2.977778 0.012004 0.015091 0.071515 0.242076 3.022222 0.012285 0.015630 0.095882 0.247755 3.066667 0.012570 0.016183 0.193513 0.253500 3.111111 0.012858 0.016748 0.327771 0.259311 3.155556 0.013150 0.017326 0.477158 0.265187 3.200000 0.013444 0.017917 0.620388 0.271130 3.244444 0.013742 0.018521 0.738296 0.277138 3.288889 0.014044 0.019138 0.820150 0.283212 3.333333 0.014348 0.019769 0.872172 0.289352 3.377778 0.014656 0.020414 0.933020 0.295558 3.422222 0.014967 0.021072 0.982244 0.301829 3.466667 0.015281 0.021744 1.028940 0.308167 3.511111 0.015599 0.022430 1.073462 0.314570 3.555556 0.015919 0.023131 1.116087 0.321039 3.600000 0.016243 0.023846 1.157039 0.327574 3.644444 0.016571 0.024575 1.196501 0.334175 3.688889 0.016901 0.025319 1.234624 0.340842 3.733333 0.017235 0.026077 1.271537 0.347574 3.777778 0.017572 0.026851 1.307348 0.354372 3.822222 0.017913 0.027639 1.342150 0.361237 3.866667 0.018256 0.028443 1.376024 0.368167 3.911111 0.018603 0.029262 1.409040 0.375163 3.955556 0.018953 0.030097 1.441261 0.382224 4.000000 0.019307 0.030947 1.472740 0.389352 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 WDM 2 PREC ENGL 1 RCHRES 1 EXTNL PREC WDM 1 EVAP ENGL 0.76 RCHRES 1 EXTNL POTEV END EXT SOURCES EXT TARGETS <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd *** <Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg*** RCHRES 1 HYDR RO 1 1 1 WDM 1000 FLOW ENGL REPL RCHRES 1 HYDR O 1 1 1 WDM 1001 FLOW ENGL REPL RCHRES 1 HYDR O 2 1 1 WDM 1002 FLOW ENGL REPL RCHRES 1 HYDR STAGE 1 1 1 WDM 1003 STAG ENGL REPL COPY 1 OUTPUT MEAN 1 1 48.4 WDM 701 FLOW ENGL REPL COPY 501 OUTPUT MEAN 1 1 48.4 WDM 801 FLOW ENGL REPL END EXT TARGETS MASS-LINK <Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->*** <Name> <Name> # #<-factor-> <Name> <Name> # #*** MASS-LINK 2 PERLND PWATER SURO 0.083333 RCHRES INFLOW IVOL 2020-02-07 BASIN 2 POND 2/18/2020 11:53:07 AM Page 29 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 17 RCHRES OFLOW OVOL 1 COPY INPUT MEAN END MASS-LINK 17 END MASS-LINK END RUN 2020-02-07 BASIN 2 POND 2/18/2020 11:53:07 AM Page 30 Predeveloped HSPF Message File 2020-02-07 BASIN 2 POND 2/18/2020 11:53:07 AM Page 31 Mitigated HSPF Message File 2020-02-07 BASIN 2 POND 2/18/2020 11:53:07 AM Page 32 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. 2005-2020; 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 WWHM2012 PROJECT REPORT 2020-02-11 BASIN 1 POND 2/18/2020 11:47:14 AM Page 2 General Model Information Project Name:2020-02-11 BASIN 1 POND Site Name: Site Address: City: Report Date:2/18/2020 Gage:Seatac Data Start:1948/10/01 Data End:2009/09/30 Timestep:15 Minute Precip Scale:1.000 Version Date:2019/09/13 Version:4.2.17 POC Thresholds Low Flow Threshold for POC1:50 Percent of the 2 Year High Flow Threshold for POC1:50 Year 2020-02-11 BASIN 1 POND 2/18/2020 11:47:14 AM Page 3 Landuse Basin Data Predeveloped Land Use Basin 1 Bypass:No GroundWater:No Pervious Land Use acre C, Forest, Mod 1.41 Pervious Total 1.41 Impervious Land Use acre Impervious Total 0 Basin Total 1.41 Element Flows To: Surface Interflow Groundwater 2020-02-11 BASIN 1 POND 2/18/2020 11:47:14 AM Page 4 Mitigated Land Use Basin 1 Bypass:No GroundWater:No Pervious Land Use acre C, Lawn, Flat 0.71 Pervious Total 0.71 Impervious Land Use acre SIDEWALKS FLAT 0.7 Impervious Total 0.7 Basin Total 1.41 Element Flows To: Surface Interflow Groundwater Trapezoidal Pond 1 Trapezoidal Pond 1 2020-02-11 BASIN 1 POND 2/18/2020 11:47:14 AM Page 5 Routing Elements Predeveloped Routing 2020-02-11 BASIN 1 POND 2/18/2020 11:47:14 AM Page 6 Mitigated Routing Trapezoidal Pond 1 Bottom Length:10.00 ft. Bottom Width:10.00 ft. Depth:5 ft. Volume at riser head:0.0503 acre-feet. Infiltration On Infiltration rate:10 Infiltration safety factor:1 Wetted surface area On Total Volume Infiltrated (ac-ft.):162.357 Total Volume Through Riser (ac-ft.):4.486 Total Volume Through Facility (ac-ft.):166.842 Percent Infiltrated:97.31 Total Precip Applied to Facility:0.748 Total Evap From Facility:0.127 Side slope 1:3 To 1 Side slope 2:3 To 1 Side slope 3:3 To 1 Side slope 4:3 To 1 Discharge Structure Riser Height:4 ft. Riser Diameter:8 in. Notch Type:Rectangular Notch Width:0.005 ft. Notch Height:2.500 ft. Orifice 1 Diameter:0.25 in.Elevation:0 ft. Element Flows To: Outlet 1 Outlet 2 Pond Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)Infilt(cfs) 0.0000 0.002 0.000 0.000 0.000 0.0556 0.002 0.000 0.000 0.024 0.1111 0.002 0.000 0.000 0.026 0.1667 0.002 0.000 0.000 0.028 0.2222 0.002 0.000 0.000 0.029 0.2778 0.003 0.000 0.000 0.031 0.3333 0.003 0.000 0.001 0.033 0.3889 0.003 0.001 0.001 0.035 0.4444 0.003 0.001 0.001 0.037 0.5000 0.003 0.001 0.001 0.039 0.5556 0.004 0.001 0.001 0.041 0.6111 0.004 0.002 0.001 0.043 0.6667 0.004 0.002 0.001 0.045 0.7222 0.004 0.002 0.001 0.047 0.7778 0.004 0.002 0.001 0.049 0.8333 0.005 0.003 0.001 0.052 0.8889 0.005 0.003 0.001 0.054 0.9444 0.005 0.003 0.001 0.056 1.0000 0.005 0.003 0.001 0.059 1.0556 0.006 0.004 0.001 0.061 1.1111 0.006 0.004 0.001 0.064 1.1667 0.006 0.005 0.001 0.066 2020-02-11 BASIN 1 POND 2/18/2020 11:47:14 AM Page 7 1.2222 0.006 0.005 0.001 0.069 1.2778 0.007 0.005 0.001 0.072 1.3333 0.007 0.006 0.002 0.075 1.3889 0.007 0.006 0.002 0.077 1.4444 0.008 0.007 0.002 0.080 1.5000 0.008 0.007 0.002 0.083 1.5556 0.008 0.007 0.002 0.086 1.6111 0.008 0.008 0.002 0.089 1.6667 0.009 0.008 0.003 0.092 1.7222 0.009 0.009 0.003 0.095 1.7778 0.009 0.010 0.004 0.098 1.8333 0.010 0.010 0.005 0.102 1.8889 0.010 0.011 0.006 0.105 1.9444 0.010 0.011 0.006 0.108 2.0000 0.011 0.012 0.007 0.112 2.0556 0.011 0.012 0.008 0.115 2.1111 0.011 0.013 0.009 0.118 2.1667 0.012 0.014 0.010 0.122 2.2222 0.012 0.014 0.011 0.126 2.2778 0.012 0.015 0.012 0.129 2.3333 0.013 0.016 0.013 0.133 2.3889 0.013 0.017 0.014 0.137 2.4444 0.014 0.017 0.015 0.140 2.5000 0.014 0.018 0.016 0.144 2.5556 0.014 0.019 0.017 0.148 2.6111 0.015 0.020 0.018 0.152 2.6667 0.015 0.021 0.019 0.156 2.7222 0.015 0.022 0.020 0.160 2.7778 0.016 0.022 0.022 0.164 2.8333 0.016 0.023 0.023 0.168 2.8889 0.017 0.024 0.024 0.172 2.9444 0.017 0.025 0.033 0.177 3.0000 0.018 0.026 0.035 0.181 3.0556 0.018 0.027 0.037 0.185 3.1111 0.018 0.028 0.039 0.190 3.1667 0.019 0.029 0.040 0.194 3.2222 0.019 0.030 0.042 0.199 3.2778 0.020 0.032 0.044 0.203 3.3333 0.020 0.033 0.046 0.208 3.3889 0.021 0.034 0.048 0.213 3.4444 0.021 0.035 0.050 0.217 3.5000 0.022 0.036 0.052 0.222 3.5556 0.022 0.038 0.055 0.227 3.6111 0.023 0.039 0.057 0.232 3.6667 0.023 0.040 0.059 0.237 3.7222 0.024 0.041 0.061 0.242 3.7778 0.024 0.043 0.063 0.247 3.8333 0.025 0.044 0.066 0.252 3.8889 0.025 0.046 0.068 0.257 3.9444 0.026 0.047 0.070 0.262 4.0000 0.026 0.048 0.072 0.267 4.0556 0.027 0.050 0.165 0.272 4.1111 0.027 0.051 0.328 0.278 4.1667 0.028 0.053 0.514 0.283 4.2222 0.028 0.055 0.683 0.289 4.2778 0.029 0.056 0.803 0.294 4.3333 0.029 0.058 0.872 0.300 4.3889 0.030 0.059 0.946 0.305 2020-02-11 BASIN 1 POND 2/18/2020 11:47:14 AM Page 8 4.4444 0.030 0.061 1.006 0.311 4.5000 0.031 0.063 1.062 0.316 4.5556 0.032 0.065 1.116 0.322 4.6111 0.032 0.066 1.167 0.328 4.6667 0.033 0.068 1.216 0.334 4.7222 0.033 0.070 1.262 0.340 4.7778 0.034 0.072 1.307 0.346 4.8333 0.034 0.074 1.351 0.352 4.8889 0.035 0.076 1.393 0.358 4.9444 0.036 0.078 1.433 0.364 5.0000 0.036 0.080 1.473 0.370 5.0556 0.037 0.082 1.511 0.376 2020-02-11 BASIN 1 POND 2/18/2020 11:47:14 AM Page 9 Analysis Results POC 1 + Predeveloped x Mitigated Predeveloped Landuse Totals for POC #1 Total Pervious Area:1.41 Total Impervious Area:0 Mitigated Landuse Totals for POC #1 Total Pervious Area:0.71 Total Impervious Area:0.7 Flow Frequency Method:Log Pearson Type III 17B Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.041983 5 year 0.068793 10 year 0.086031 25 year 0.106537 50 year 0.12074 100 year 0.134007 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.016248 5 year 0.030936 10 year 0.044874 25 year 0.068583 50 year 0.091605 100 year 0.1201 Annual Peaks Annual Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1949 0.048 0.022 1950 0.057 0.035 1951 0.092 0.022 1952 0.029 0.010 1953 0.023 0.010 1954 0.036 0.011 1955 0.057 0.019 1956 0.046 0.014 1957 0.037 0.023 1958 0.041 0.011 2020-02-11 BASIN 1 POND 2/18/2020 11:47:45 AM Page 10 1959 0.035 0.009 1960 0.063 0.020 1961 0.035 0.014 1962 0.022 0.006 1963 0.030 0.010 1964 0.042 0.015 1965 0.028 0.013 1966 0.027 0.011 1967 0.064 0.023 1968 0.036 0.017 1969 0.035 0.015 1970 0.028 0.013 1971 0.032 0.013 1972 0.070 0.037 1973 0.031 0.009 1974 0.034 0.011 1975 0.048 0.021 1976 0.034 0.011 1977 0.005 0.009 1978 0.029 0.023 1979 0.017 0.012 1980 0.082 0.023 1981 0.026 0.018 1982 0.053 0.047 1983 0.045 0.022 1984 0.027 0.007 1985 0.016 0.015 1986 0.072 0.030 1987 0.064 0.027 1988 0.025 0.008 1989 0.017 0.006 1990 0.152 0.159 1991 0.081 0.057 1992 0.033 0.013 1993 0.032 0.004 1994 0.011 0.005 1995 0.046 0.012 1996 0.106 0.035 1997 0.082 0.022 1998 0.020 0.010 1999 0.090 0.047 2000 0.032 0.021 2001 0.006 0.009 2002 0.037 0.035 2003 0.055 0.009 2004 0.059 0.095 2005 0.044 0.021 2006 0.049 0.013 2007 0.115 0.060 2008 0.140 0.071 2009 0.065 0.036 Ranked Annual Peaks Ranked Annual Peaks for Predeveloped and Mitigated. POC #1 Rank Predeveloped Mitigated 1 0.1520 0.1590 2 0.1401 0.0945 3 0.1149 0.0706 2020-02-11 BASIN 1 POND 2/18/2020 11:47:45 AM Page 11 4 0.1065 0.0595 5 0.0917 0.0573 6 0.0901 0.0475 7 0.0822 0.0472 8 0.0820 0.0368 9 0.0806 0.0361 10 0.0719 0.0350 11 0.0696 0.0346 12 0.0653 0.0345 13 0.0645 0.0302 14 0.0635 0.0271 15 0.0633 0.0231 16 0.0592 0.0229 17 0.0574 0.0228 18 0.0571 0.0226 19 0.0554 0.0223 20 0.0532 0.0222 21 0.0494 0.0222 22 0.0483 0.0221 23 0.0476 0.0214 24 0.0461 0.0210 25 0.0460 0.0208 26 0.0455 0.0197 27 0.0439 0.0191 28 0.0422 0.0178 29 0.0412 0.0171 30 0.0371 0.0155 31 0.0371 0.0151 32 0.0363 0.0145 33 0.0357 0.0143 34 0.0353 0.0138 35 0.0353 0.0135 36 0.0348 0.0130 37 0.0342 0.0128 38 0.0340 0.0127 39 0.0329 0.0125 40 0.0321 0.0120 41 0.0320 0.0116 42 0.0320 0.0112 43 0.0309 0.0112 44 0.0297 0.0111 45 0.0288 0.0107 46 0.0288 0.0106 47 0.0283 0.0103 48 0.0280 0.0101 49 0.0274 0.0101 50 0.0269 0.0098 51 0.0257 0.0092 52 0.0251 0.0090 53 0.0233 0.0089 54 0.0217 0.0088 55 0.0201 0.0087 56 0.0174 0.0077 57 0.0166 0.0065 58 0.0163 0.0061 59 0.0108 0.0055 60 0.0057 0.0048 61 0.0050 0.0045 2020-02-11 BASIN 1 POND 2/18/2020 11:47:45 AM Page 12 2020-02-11 BASIN 1 POND 2/18/2020 11:47:45 AM Page 13 Duration Flows The Facility PASSED Flow(cfs)Predev Mit Percentage Pass/Fail 0.0210 17077 359 2 Pass 0.0220 15496 315 2 Pass 0.0230 14072 272 1 Pass 0.0240 12799 255 1 Pass 0.0250 11567 238 2 Pass 0.0260 10523 235 2 Pass 0.0270 9567 227 2 Pass 0.0280 8752 223 2 Pass 0.0291 8031 217 2 Pass 0.0301 7349 206 2 Pass 0.0311 6737 198 2 Pass 0.0321 6192 194 3 Pass 0.0331 5726 191 3 Pass 0.0341 5309 188 3 Pass 0.0351 4924 179 3 Pass 0.0361 4569 174 3 Pass 0.0371 4235 168 3 Pass 0.0381 3951 167 4 Pass 0.0391 3645 161 4 Pass 0.0401 3388 151 4 Pass 0.0411 3133 148 4 Pass 0.0422 2915 146 5 Pass 0.0432 2706 140 5 Pass 0.0442 2490 132 5 Pass 0.0452 2314 123 5 Pass 0.0462 2136 118 5 Pass 0.0472 1973 112 5 Pass 0.0482 1824 107 5 Pass 0.0492 1702 101 5 Pass 0.0502 1577 95 6 Pass 0.0512 1443 92 6 Pass 0.0522 1325 86 6 Pass 0.0532 1232 81 6 Pass 0.0542 1147 77 6 Pass 0.0552 1086 73 6 Pass 0.0563 1020 66 6 Pass 0.0573 947 59 6 Pass 0.0583 885 55 6 Pass 0.0593 824 53 6 Pass 0.0603 760 47 6 Pass 0.0613 725 45 6 Pass 0.0623 674 40 5 Pass 0.0633 623 39 6 Pass 0.0643 589 35 5 Pass 0.0653 549 31 5 Pass 0.0663 506 25 4 Pass 0.0673 469 23 4 Pass 0.0683 427 20 4 Pass 0.0694 388 18 4 Pass 0.0704 356 12 3 Pass 0.0714 328 8 2 Pass 0.0724 297 7 2 Pass 0.0734 270 6 2 Pass 2020-02-11 BASIN 1 POND 2/18/2020 11:47:45 AM Page 14 0.0744 241 6 2 Pass 0.0754 218 6 2 Pass 0.0764 198 6 3 Pass 0.0774 173 6 3 Pass 0.0784 152 5 3 Pass 0.0794 130 5 3 Pass 0.0804 119 5 4 Pass 0.0814 104 5 4 Pass 0.0825 95 5 5 Pass 0.0835 83 5 6 Pass 0.0845 74 5 6 Pass 0.0855 69 5 7 Pass 0.0865 61 5 8 Pass 0.0875 53 4 7 Pass 0.0885 46 4 8 Pass 0.0895 39 4 10 Pass 0.0905 29 4 13 Pass 0.0915 25 4 16 Pass 0.0925 22 4 18 Pass 0.0935 20 4 20 Pass 0.0945 17 4 23 Pass 0.0956 14 3 21 Pass 0.0966 12 3 25 Pass 0.0976 8 3 37 Pass 0.0986 7 3 42 Pass 0.0996 7 3 42 Pass 0.1006 7 3 42 Pass 0.1016 6 3 50 Pass 0.1026 6 3 50 Pass 0.1036 6 3 50 Pass 0.1046 6 3 50 Pass 0.1056 6 3 50 Pass 0.1066 5 3 60 Pass 0.1076 5 2 40 Pass 0.1086 5 2 40 Pass 0.1097 5 2 40 Pass 0.1107 5 2 40 Pass 0.1117 5 2 40 Pass 0.1127 5 2 40 Pass 0.1137 4 2 50 Pass 0.1147 4 2 50 Pass 0.1157 3 2 66 Pass 0.1167 3 2 66 Pass 0.1177 3 2 66 Pass 0.1187 3 2 66 Pass 0.1197 3 2 66 Pass 0.1207 3 2 66 Pass 2020-02-11 BASIN 1 POND 2/18/2020 11:47:45 AM Page 15 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. 2020-02-11 BASIN 1 POND 2/18/2020 11:47:45 AM Page 16 LID Report 2020-02-11 BASIN 1 POND 2/18/2020 11:48:08 AM Page 17 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. 2020-02-11 BASIN 1 POND 2/18/2020 11:48:08 AM Page 18 Appendix Predeveloped Schematic 2020-02-11 BASIN 1 POND 2/18/2020 11:48:09 AM Page 19 Mitigated Schematic 2020-02-11 BASIN 1 POND 2/18/2020 11:48:11 AM Page 20 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 2020-02-11 BASIN 1 POND.wdm MESSU 25 Pre2020-02-11 BASIN 1 POND.MES 27 Pre2020-02-11 BASIN 1 POND.L61 28 Pre2020-02-11 BASIN 1 POND.L62 30 POC2020-02-11 BASIN 1 POND1.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 PERLND 11 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 Basin 1 MAX 1 2 30 9 END DISPLY-INFO1 END DISPLY COPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 END TIMESERIES END COPY GENER OPCODE # # OPCD *** END OPCODE PARM # # K *** END PARM END GENER PERLND GEN-INFO <PLS ><-------Name------->NBLKS Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 11 C, Forest, Mod 1 1 1 1 27 0 END GEN-INFO *** Section PWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *** 11 0 0 1 0 0 0 0 0 0 0 0 0 END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ***************************** PIVL PYR # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ********* 11 0 0 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO 2020-02-11 BASIN 1 POND 2/18/2020 11:48:11 AM Page 21 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 2020-02-11 BASIN 1 POND 2/18/2020 11:48:11 AM Page 22 END IMPLND SCHEMATIC <-Source-> <--Area--> <-Target-> MBLK *** <Name> # <-factor-> <Name> # Tbl# *** Basin 1*** PERLND 11 1.41 COPY 501 12 PERLND 11 1.41 COPY 501 13 ******Routing****** END SCHEMATIC NETWORK <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** COPY 501 OUTPUT MEAN 1 1 48.4 DISPLY 1 INPUT TIMSER 1 <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** END NETWORK RCHRES GEN-INFO RCHRES Name Nexits Unit Systems Printer *** # - #<------------------><---> User T-series Engl Metr LKFG *** in out *** END GEN-INFO *** Section RCHRES*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG *** END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ******************* PIVL PYR # - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR ********* END PRINT-INFO HYDR-PARM1 RCHRES Flags for each HYDR Section *** # - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** END HYDR-PARM1 HYDR-PARM2 # - # FTABNO LEN DELTH STCOR KS DB50 *** <------><--------><--------><--------><--------><--------><--------> *** END HYDR-PARM2 HYDR-INIT RCHRES Initial conditions for each HYDR section *** # - # *** VOL Initial value of COLIND Initial value of OUTDGT *** ac-ft for each possible exit for each possible exit <------><--------> <---><---><---><---><---> *** <---><---><---><---><---> END HYDR-INIT END RCHRES SPEC-ACTIONS END SPEC-ACTIONS FTABLES END FTABLES EXT SOURCES <-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # *** WDM 2 PREC ENGL 1 PERLND 1 999 EXTNL PREC WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC 2020-02-11 BASIN 1 POND 2/18/2020 11:48:11 AM Page 23 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 2020-02-11 BASIN 1 POND 2/18/2020 11:48:11 AM Page 24 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 2020-02-11 BASIN 1 POND.wdm MESSU 25 Mit2020-02-11 BASIN 1 POND.MES 27 Mit2020-02-11 BASIN 1 POND.L61 28 Mit2020-02-11 BASIN 1 POND.L62 30 POC2020-02-11 BASIN 1 POND1.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 PERLND 16 IMPLND 8 RCHRES 1 COPY 1 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 Trapezoidal Pond 1 MAX 1 2 30 9 END DISPLY-INFO1 END DISPLY COPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 END TIMESERIES END COPY GENER OPCODE # # OPCD *** END OPCODE PARM # # K *** END PARM END GENER PERLND GEN-INFO <PLS ><-------Name------->NBLKS Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 16 C, Lawn, Flat 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 *** 16 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 ********* 2020-02-11 BASIN 1 POND 2/18/2020 11:48:11 AM Page 25 16 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 *** 16 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 16 0 4.5 0.03 400 0.05 0.5 0.996 END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 *** # - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP 16 0 0 2 2 0 0 0 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 *** # - # CEPSC UZSN NSUR INTFW IRC LZETP *** 16 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 16 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 *** 8 SIDEWALKS/FLAT 1 1 1 27 0 END GEN-INFO *** Section IWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** 8 0 0 1 0 0 0 END ACTIVITY PRINT-INFO <ILS > ******** Print-flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* 8 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 *** 8 0 0 0 0 0 END IWAT-PARM1 IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC 8 400 0.01 0.1 0.1 END IWAT-PARM2 IWAT-PARM3 <PLS > IWATER input info: Part 3 *** 2020-02-11 BASIN 1 POND 2/18/2020 11:48:11 AM Page 26 # - # ***PETMAX PETMIN 8 0 0 END IWAT-PARM3 IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS 8 0 0 END IWAT-STATE1 END IMPLND SCHEMATIC <-Source-> <--Area--> <-Target-> MBLK *** <Name> # <-factor-> <Name> # Tbl# *** Basin 1*** PERLND 16 0.71 RCHRES 1 2 PERLND 16 0.71 RCHRES 1 3 IMPLND 8 0.7 RCHRES 1 5 ******Routing****** PERLND 16 0.71 COPY 1 12 IMPLND 8 0.7 COPY 1 15 PERLND 16 0.71 COPY 1 13 RCHRES 1 1 COPY 501 17 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 Trapezoidal Pond-005 2 1 1 1 28 0 1 END GEN-INFO *** Section RCHRES*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG *** 1 1 0 0 0 0 0 0 0 0 0 END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ******************* PIVL PYR # - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR ********* 1 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO HYDR-PARM1 RCHRES Flags for each HYDR Section *** # - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** 1 0 1 0 0 4 5 0 0 0 0 0 0 0 0 2 2 2 2 2 END HYDR-PARM1 HYDR-PARM2 # - # FTABNO LEN DELTH STCOR KS DB50 *** <------><--------><--------><--------><--------><--------><--------> *** 2020-02-11 BASIN 1 POND 2/18/2020 11:48:11 AM Page 27 1 1 0.01 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 5.0 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 91 5 Depth Area Volume Outflow1 Outflow2 Velocity Travel Time*** (ft) (acres) (acre-ft) (cfs) (cfs) (ft/sec) (Minutes)*** 0.000000 0.002296 0.000000 0.000000 0.000000 0.055556 0.002451 0.000132 0.000400 0.024717 0.111111 0.002612 0.000273 0.000565 0.026337 0.166667 0.002778 0.000422 0.000692 0.028009 0.222222 0.002949 0.000581 0.000800 0.029733 0.277778 0.003125 0.000750 0.000894 0.031507 0.333333 0.003306 0.000929 0.000979 0.033333 0.388889 0.003492 0.001117 0.001058 0.035211 0.444444 0.003683 0.001317 0.001131 0.037140 0.500000 0.003880 0.001527 0.001199 0.039120 0.555556 0.004081 0.001748 0.001264 0.041152 0.611111 0.004288 0.001980 0.001326 0.043236 0.666667 0.004500 0.002225 0.001385 0.045370 0.722222 0.004716 0.002481 0.001441 0.047557 0.777778 0.004938 0.002749 0.001496 0.049794 0.833333 0.005165 0.003029 0.001548 0.052083 0.888889 0.005397 0.003323 0.001599 0.054424 0.944444 0.005635 0.003629 0.001648 0.056816 1.000000 0.005877 0.003949 0.001696 0.059259 1.055556 0.006124 0.004282 0.001743 0.061754 1.111111 0.006377 0.004630 0.001788 0.064300 1.166667 0.006635 0.004991 0.001832 0.066898 1.222222 0.006897 0.005367 0.001875 0.069547 1.277778 0.007165 0.005758 0.001917 0.072248 1.333333 0.007438 0.006163 0.001958 0.075000 1.388889 0.007716 0.006584 0.001999 0.077803 1.444444 0.007999 0.007021 0.002038 0.080658 1.500000 0.008287 0.007473 0.002077 0.083565 1.555556 0.008581 0.007942 0.002331 0.086523 1.611111 0.008879 0.008427 0.002756 0.089532 1.666667 0.009183 0.008928 0.003285 0.092593 1.722222 0.009491 0.009447 0.003892 0.095705 1.777778 0.009805 0.009983 0.004564 0.098868 1.833333 0.010124 0.010537 0.005287 0.102083 1.888889 0.010448 0.011108 0.006055 0.105350 1.944444 0.010777 0.011698 0.006860 0.108668 2.000000 0.011111 0.012306 0.007697 0.112037 2.055556 0.011450 0.012932 0.008560 0.115458 2.111111 0.011795 0.013578 0.009446 0.118930 2.166667 0.012144 0.014243 0.010351 0.122454 2.222222 0.012499 0.014928 0.011271 0.126029 2.277778 0.012858 0.015632 0.012204 0.129655 2.333333 0.013223 0.016356 0.013146 0.133333 2.388889 0.013593 0.017101 0.014094 0.137063 2.444444 0.013968 0.017867 0.015047 0.140844 2.500000 0.014348 0.018653 0.016002 0.144676 2.555556 0.014733 0.019461 0.017157 0.148560 2.611111 0.015123 0.020291 0.018341 0.152495 2.666667 0.015519 0.021142 0.019555 0.156481 2.722222 0.015919 0.022015 0.020797 0.160520 2.777778 0.016325 0.022911 0.022066 0.164609 2.833333 0.016736 0.023829 0.023362 0.168750 2020-02-11 BASIN 1 POND 2/18/2020 11:48:11 AM Page 28 2.888889 0.017151 0.024770 0.024685 0.172942 2.944444 0.017572 0.025735 0.033439 0.177186 3.000000 0.017998 0.026723 0.035244 0.181481 3.055556 0.018429 0.027735 0.037083 0.185828 3.111111 0.018865 0.028771 0.038953 0.190226 3.166667 0.019307 0.029831 0.040856 0.194676 3.222222 0.019753 0.030916 0.042790 0.199177 3.277778 0.020205 0.032026 0.044755 0.203729 3.333333 0.020661 0.033161 0.046750 0.208333 3.388889 0.021123 0.034322 0.048775 0.212989 3.444444 0.021590 0.035508 0.050829 0.217695 3.500000 0.022062 0.036721 0.052912 0.222454 3.555556 0.022539 0.037960 0.055024 0.227263 3.611111 0.023021 0.039225 0.057164 0.232124 3.666667 0.023508 0.040518 0.059332 0.237037 3.722222 0.024000 0.041837 0.061528 0.242001 3.777778 0.024498 0.043185 0.063750 0.247016 3.833333 0.025000 0.044560 0.065999 0.252083 3.888889 0.025508 0.045963 0.068275 0.257202 3.944444 0.026020 0.047394 0.070577 0.262371 4.000000 0.026538 0.048854 0.072905 0.267593 4.055556 0.027061 0.050343 0.165208 0.272865 4.111111 0.027589 0.051861 0.328218 0.278189 4.166667 0.028122 0.053408 0.514810 0.283565 4.222222 0.028660 0.054986 0.683907 0.288992 4.277778 0.029204 0.056593 0.803543 0.294470 4.333333 0.029752 0.058231 0.872606 0.300000 4.388889 0.030306 0.059899 0.946017 0.305581 4.444444 0.030864 0.061598 1.006312 0.311214 4.500000 0.031428 0.063328 1.062944 0.316898 4.555556 0.031997 0.065090 1.116509 0.322634 4.611111 0.032571 0.066884 1.167457 0.328421 4.666667 0.033150 0.068709 1.216138 0.334259 4.722222 0.033734 0.070567 1.262830 0.340149 4.777778 0.034323 0.072458 1.307759 0.346091 4.833333 0.034917 0.074381 1.351111 0.352083 4.888889 0.035517 0.076337 1.393041 0.358128 4.944444 0.036121 0.078327 1.433680 0.364223 5.000000 0.036731 0.080351 1.473141 0.370370 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 WDM 2 PREC ENGL 1 RCHRES 1 EXTNL PREC WDM 1 EVAP ENGL 0.76 RCHRES 1 EXTNL POTEV END EXT SOURCES EXT TARGETS <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd *** <Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg*** RCHRES 1 HYDR RO 1 1 1 WDM 1000 FLOW ENGL REPL RCHRES 1 HYDR O 1 1 1 WDM 1001 FLOW ENGL REPL RCHRES 1 HYDR O 2 1 1 WDM 1002 FLOW ENGL REPL RCHRES 1 HYDR STAGE 1 1 1 WDM 1003 STAG ENGL REPL COPY 1 OUTPUT MEAN 1 1 48.4 WDM 701 FLOW ENGL REPL COPY 501 OUTPUT MEAN 1 1 48.4 WDM 801 FLOW ENGL REPL END EXT TARGETS MASS-LINK <Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->*** <Name> <Name> # #<-factor-> <Name> <Name> # #*** MASS-LINK 2 PERLND PWATER SURO 0.083333 RCHRES INFLOW IVOL 2020-02-11 BASIN 1 POND 2/18/2020 11:48:11 AM Page 29 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 17 RCHRES OFLOW OVOL 1 COPY INPUT MEAN END MASS-LINK 17 END MASS-LINK END RUN 2020-02-11 BASIN 1 POND 2/18/2020 11:48:11 AM Page 30 Predeveloped HSPF Message File 2020-02-11 BASIN 1 POND 2/18/2020 11:48:11 AM Page 31 Mitigated HSPF Message File 2020-02-11 BASIN 1 POND 2/18/2020 11:48:11 AM Page 32 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. 2005-2020; 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 APPENDIX C Water Quality Calculations Will be provided upon completion APPENDIX D TESC Plan Sheets Will be provided upon completion APPENDIX E Stormwater Plan Sheets See Preliminary Plat for storm drainage details APPENDIX F Bond Quantities Worksheet Will be provided upon completion APPENDIX G Operations and Maintenance Manual Will be provided upon completion