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Railway Road Prelim TIR Prepared for: Blue Fern 18300 Redmond Way, Suite 120 Redmond, WA 98052 Approved by: Prepared by: Holli Heavrin, P.E. Katie Lane, E.I.T. Date: February 15, 2023 Core No: 22205 Preliminary Storm Drainage Report FOR RAILWAY ROAD YELM, WASHINGTON 02/15/2023 Core Design, Inc. RAILWAY ROAD Page i Table of Contents 1. Project Overview ................................................................................................................................. 1-1 2. Conditions and Requirement Summary .............................................................................................. 2-1 2.1 MR1: Erosion and Sediment Control .................................................................................. 2-1 2.2 MR2: Preservation of Natural Drainage Systems ............................................................... 2-1 2.3 MR3: Source Control of Pollution ...................................................................................... 2-1 2.4 MR4: Runoff Treatment BMPs ........................................................................................... 2-1 2.5 MR5: Streambank Erosion Control .................................................................................... 2-1 2.6 MR6: Wetlands................................................................................................................... 2-1 2.7 MR7: Water Quality Sensitive Areas .................................................................................. 2-1 2.8 MR8: Off-Site Analysis and Mitigation ............................................................................... 2-2 2.9 MR9: Basin Planning .......................................................................................................... 2-2 2.10 MR10: Operation and Maintenance .............................................................................. 2-2 2.11 MR11: Financial Liability ................................................................................................ 2-2 3. Off-Site Analysis ................................................................................................................................... 3-1 3.1 Resource Review ................................................................................................................ 3-1 3.2 Downstream Field Investigation ............................................................................................. 3-1 4. Flow Control and Water Quality Facility Analysis and Design ............................................................. 4-1 4.1 Design Standards................................................................................................................ 4-1 4.1.1 Existing Conditions ..................................................................................................... 4-1 4.1.2 Developed Conditions ................................................................................................ 4-1 4.2 Stormwater BMP Sizing and LID Performance Standard. ....................................................... 4-2 5. Conveyance System and Analysis and Design ..................................................................................... 5-1 6. Special Reports and Studies ................................................................................................................ 6-1 7. Other Permits ...................................................................................................................................... 7-1 8. Erosion and Sedimentation Control Analysis and Design ................................................................... 8-1 9. Bond Quantities, Facility Summaries and Declaration of Covenant ................................................... 9-1 10. Operations and Maintenance Manual .............................................................................................. 10-1 Appendix Appendix A. WWHM Report Core Design, Inc. RAILWAY ROAD Page 1-1 1. Project Overview The Railway Road project is a proposed residential development consisting of 90 single-family units. The project is located in Yelm, Washington in Thurston County at 16330 Railway Road SE (see Vicinity Map). The project property totals 14.92 acres and is bordered by residential areas to the east and south, the Yelm Railroad to the north, and land owned by Puget Sound electric to the west. Access to the site will be provided from Railway Rd SE. See Table 1-1 below for a summary of the parcel information relevant to this project. Table 1-1 Parcel Information Thurston County Parcel # Site Area (AC) 64300700501 4.92 64300700400 10.00 The existing site is currently developed with two single-family residences with associated outbuildings and access. The property is generally flat and existing vegetation consists of grass and a small number of trees surrounding the residences. Proposed development of the site will include demolition of all structures on the property, and construction of 90 single-family homes on 90 lots, along with associated roads and utilities. Flow control and water quality for the proposed development will be provided through the use of a bioretention facility. Stormwater facilities for the project will be designed in accordance with the 2019 Washington State Department of Ecology (DOE) Stormwater Management Manual for Western Washington (SMMWW) and the City of Yelm Municipal Code (YMC). Core Design, Inc. RAILWAY ROAD Page 2-1 2. Conditions and Requirement Summary This project is subject to the 2019 SMMWW, and is classified as a new development which will add more than 5,000 square feet of impervious surfaces; therefore, Minimum Requirements (MRs) 1 through 11, as detailed in the YMC Chapter 13.16.070. B(3) through B(13). 2.1 MR1: Erosion and Sediment Control The proposed project will include land disturbing activities of greater than one acre. As such, development will comply with erosion and sediment control requirements 1 through 14 as detailed in the YMC. This Minimum Requirement will be addressed at final design. 2.2 MR2: Preservation of Natural Drainage Systems The project proposes to infiltrate all stormwater runoff, so there will be no drainage from the site in the developed condition. There are no natural drainage systems or outfalls to preserve. 2.3 MR3: Source Control of Pollution The proposed project is a single-family development which is not subject to source control. 2.4 MR4: Runoff Treatment BMPs The project proposes to utilize a bioretention facility to treat all stormwater runoff prior to infiltration to the ground. See Section 4 for a discussion of the sizing of this facility. 2.5 MR5: Streambank Erosion Control This requirement applies only to projects whose stormwater discharges into a stream, either directly or indirectly. This site does not discharge into a stream, either directly or indirectly, and, as such, is not subject to this minimum requirement. 2.6 MR6: Wetlands This requirement applies only to projects whose stormwater discharges into a wetland, either directly or indirectly through a conveyance system. This site does not discharge into a wetland, either directly or indirectly, and, as such, is not subject to this minimum requirement. 2.7 MR7: Water Quality Sensitive Areas The project site is not within a water quality sensitive area, therefore basic water quality treatment as discussed under Minimum Requirement 4 will be the extent of the proposed water treatment. Core Design, Inc. RAILWAY ROAD Page 2-2 2.8 MR8: Off-Site Analysis and Mitigation The onsite soils of the project site are highly infiltrative. It is understood that all runoff from the site is infiltrated prior to leaving the property. The proposed stormwater management is to mimic this natural drainage pattern by infiltrating all runoff. As such, there should be no adverse impacts to the downstream system, and there is no downstream path to analyze. See Section 3 for a discussion of the existing and proposed project site. 2.9 MR9: Basin Planning No relevant basin plans were found for the project site. 2.10 MR10: Operation and Maintenance This Minimum Requirement will be addressed at final design. 2.11 MR11: Financial Liability This Minimum Requirement will be addressed at final design. Core Design, Inc. RAILWAY ROAD Page 3-1 3. Off-Site Analysis 3.1 Resource Review FEMA – Flood Insurance rate Map (FIRM #53067C0353E and #53067C0354E) The project site is reported to be in Zone X, with no flood areas identified on or near the site. Critical Aquifer Recharge Area Per the City of Yelm Web Map, the project site is within a critical aquifer recharge area with a recharge rate of extreme. Wetlands There are no wetland indicators onsite per the City of Yelm Web Map. 3.2 Downstream Field Investigation The onsite soils of the project site are highly infiltrative. It is understood that all runoff from the site is infiltrated prior to leaving the property. As such, there should be no adverse impacts to the downstream system, and there is no downstream path to analyze. Core Design, Inc. RAILWAY ROAD Page 4-1 4. Flow Control and Water Quality Facility Analysis and Design 4.1 Design Standards The flow control and water quality treatment facility will be designed per the 2019 SMMWW in accordance with CYM 13.16.060. The drainage analysis for flow control was modeled using the 2012 Western Washington Hydrologic Model (WWHM), as allowed per Volume III, Section 2.2 of the 2019 SMMWW. This project proposes to utilize infiltration through a bioretention facility to fully meet the flow control and water quality requirements detailed in Section 2 of this report. 4.1.1 Existing Conditions On site soils, as investigated by Terra Associates, Inc., and detailed in the Geotechnical Engineering Report, dated September 12, 2022, include “overlying native outwash deposits comprised predominantly of medium dense to very dense gravel and sand with varying silt and cobble contents” which is noted as recessional outwash gravel (Qgog). The geotechnical investigation included a small- scale Pilot Infiltration Test (PIT) which resulted in a preliminary long term design infiltration rate of 15 inches per hour. The site is currently developed with two single-family residences, and vegetation consists mostly of grass with some small trees near the residences. Despite existing grass cover, the site will be modeled as forested to match the historic condition as required to meet the LID performance standard. Refer to Table 4-1 for a breakdown of the site areas used for modeling in the existing condition. An exhibit of the existing condition is also included at the end of this section for reference. Table 4-1 Predeveloped Areas Land Cover Area (acres) A/B Forest, Flat 14.92 Total Area 14.92 4.1.2 Developed Conditions The project proposes to build 90 single-family lots with associated roads, utilities, and open spaces across the two parcels, as well as frontage improvements. The project has elected to meet the LID Performance Standard with the use of a bioretention facility to infiltrate stormwater runoff. Table 4-2 below offers a breakdown of areas for the developed condition as used in WWHM to size the bioretention facility. Note that due to how the WWHM bioretention element included precipitation and evaporation for the surface area of the facility, the bioretention facility basin area does not equal the project site area, despite being designed to serve the entire area. Land Coverage Assumptions  All proposed single family lots were assumed to be 50 percent impervious. This accounts for both the structure (maximum 40 percent coverage based on the building setbacks) as well as Core Design, Inc. RAILWAY ROAD Page 4-2 the lot driveway and any walkways (assumed to be equal to or less than 10 percent of the lot area).  The Right-of-Way areas were assumed to be 80 percent impervious.  All pervious areas will be subject to BMP T5.13, Post-Construction Soil Quality and Depth, and, as such, will be modeled as pasture. Table 4-2 Developed Areas Land Cover Area (acres) A/B Pasture, Flat 6.38 Roofs. Flat 4.63 Roads, Flat 3.46 Bioretention Basin Area 14.47 Bioretention Facility Area 0.45 Total Area 14.92 4.2 Stormwater BMP Sizing and LID Performance Standard. In order to manage onsite stormwater runoff, the project has elected to meet the LID Performance Standard by fulling infiltrating all runoff. This will be accomplished through the use of a bioretention facility and implementation of BMP T5.13 Post-Construction Soil Quality and Depth. The bioretention facility proposed for this site was sized using WWHM and the basin areas detailed in Tables 4-1 and 4-2 in Section 4.1 of this Report. Infiltration to native soils beneath the bioretention soil mix was also included in the model. While the Geotechnical Engineering Report designated the design infiltration rate for onsite soils as 15 inches per hour, the model will utilize a native infiltration rate of 12 inches per hour to remain conservative and match the infiltration rate associated with the bioretention soil mix. Using this design native infiltration rate of 12 inches per hour and a ponding depth of 3 feet, it was determined that the required bottom dimensions of the bioretention facility are 148’ by 72’ with 3:1 side slopes. The bioretention facility has been designed in accordance with the 2019 SMMWW using 3 inches of mulch over 18 inches of the new DOE approved bioretention soil mix with an infiltration rate of 12 inches per hour. All soil data which was input to WWHM for the purposes of sizing is detailed in the WWHM provided Bioretention documentation. Since the project site proposes to direct runoff from greater than 5,000 square feet of impervious surface, a safety factor of 4 was selected for the bioretention soil mix and mulch layer. Table 4-3 and a screenshot of the WWHM input are included below, as well as the full WWHM report in Appendix A, detailing the provided bioretention storage area. Table 4-3 Bioretention Facility Summary Pervious Area (ac) Impervious Area (ac) Design Native Infiltration Rate (in/hr) Percent Infiltrated Percent Treated Storage Volume Provided (cf) 6.38 8.09 12.0 100 100 59,242 Core Design, Inc. RAILWAY ROAD Page 4-3 Based on WWHM, the proposed bioretention facility will fully treat and infiltrate 100 percent of runoff from the site, and meets the LID Performance Standard. See the WWHM LID Report included below for reference. FLUME LANE (NOT OPEN) RAILWAY ROAD SE (PUBLIC R-O-W)MACKIE PARCELHUTCHESON PARCELDESIGN12100 NE 195th St, Suite 300 Bothell, Washington 98011 425.885.7877CIVIL ENGINEERINGLANDSCAPE ARCHITECTUREPLANNINGSURVEYING22205EXISTING CONDITIONSRAILWAY ROAD 231729698123456712910111413158584908988878674738172797776756768706371646566ROW835046364335423441334032393138303744TRACT A55525651485749584759606162TRACT C535428TRACT E272625242022211819TRACT D1645788280TRACT BFLUME LANE (NOT OPEN) RAILWAY ROAD SE (PUBLIC R-O-W)DESIGN12100 NE 195th St, Suite 300 Bothell, Washington 98011 425.885.7877CIVIL ENGINEERINGLANDSCAPE ARCHITECTUREPLANNINGSURVEYING22205DEVELOPED CONDITIONSRAILWAY ROAD Core Design, Inc. RAILWAY ROAD Page 5-1 5. Conveyance System and Analysis and Design Conveyance analysis of the proposed system will be completed at final design. Core Design, Inc. RAILWAY ROAD Page 6-1 6. Special Reports and Studies The following reports have been submitted under separate cover. The following reports and assessments are provided for reference and informational purposes only. Core Design takes no responsibility or liability for these reports, assessments or designs as they were not completed under the direct supervision of Core Design. · Geotechnical Report prepared by Terra Associates, Inc. dated September 12, 2022 Core Design, Inc. RAILWAY ROAD Page 7-1 7. Other Permits There are no other permits at this time. Core Design, Inc. RAILWAY ROAD Page 8-1 8. Erosion and Sedimentation Control Analysis and Design In accordance with the City of Yelm Minimum Requirement #1, all fifteen erosion and sediment control requirements will be designed for and met. This design will be completed at final design. Core Design, Inc. RAILWAY ROAD Page 9-1 9. Bond Quantities, Facility Summaries and Declaration of Covenant Any relevant bond quantities, facility summaries, and declarations of covenant will be provided at final design. Core Design, Inc. RAILWAY ROAD Page 10-1 10. Operations and Maintenance Manual An Operations and Maintenance manual for the proposed stormwater facilities will be included at final design. Appendix A WWHM Report WWHM2012 PROJECT REPORT 22205 Bioretention 2/15/2023 2:46:37 PM Page 2 General Model Information Project Name:22205 Bioretention Site Name:Railway Road (Yelm) Site Address: City:Yelm Report Date:2/15/2023 Gage:Lake Lawrence Data Start:1955/10/01 Data End:2008/09/30 Timestep:15 Minute Precip Scale:0.857 Version Date:2021/08/18 Version:4.2.18 POC Thresholds Low Flow Threshold for POC1:50 Percent of the 2 Year High Flow Threshold for POC1:50 Year 22205 Bioretention 2/15/2023 2:46:37 PM Page 3 Landuse Basin Data Predeveloped Land Use Basin 1 Bypass:No GroundWater:No Pervious Land Use acre A B, Forest, Flat 14.92 Pervious Total 14.92 Impervious Land Use acre Impervious Total 0 Basin Total 14.92 Element Flows To: Surface Interflow Groundwater 22205 Bioretention 2/15/2023 2:46:37 PM Page 4 Mitigated Land Use Basin 1 Bypass:No GroundWater:No Pervious Land Use acre A B, Pasture, Flat 6.38 Pervious Total 6.38 Impervious Land Use acre ROADS FLAT 3.46 ROOF TOPS FLAT 4.63 Impervious Total 8.09 Basin Total 14.47 Element Flows To: Surface Interflow Groundwater Surface Bioretention Surface Bioretention 22205 Bioretention 2/15/2023 2:46:37 PM Page 5 Routing Elements Predeveloped Routing 22205 Bioretention 2/15/2023 2:46:37 PM Page 6 Mitigated Routing Bioretention Bottom Length: 148.00 ft. Bottom Width: 72.00 ft. Material thickness of first layer: 0.25 Material type for first layer: ASTM 100 Material thickness of second layer: 1.5 Material type for second layer: SMMWW 12 in/hr Material thickness of third layer: 0 Material type for third layer: SMMWW Infiltration On Infiltration rate:12 Infiltration safety factor:1 Wetted surface area On Total Volume Infiltrated (ac-ft.):1452.119 Total Volume Through Riser (ac-ft.):0 Total Volume Through Facility (ac-ft.):1452.119 Percent Infiltrated:100 Total Precip Applied to Facility:46.643 Total Evap From Facility:16.682 Underdrain not used Discharge Structure Riser Height:3 ft. Riser Diameter:24 in. Element Flows To: Outlet 1 Outlet 2 Bioretention Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)Infilt(cfs) 0.0000 0.3002 0.0000 0.0000 0.0000 0.0577 0.2996 0.0036 0.0000 0.0000 0.1154 0.2976 0.0072 0.0000 0.0000 0.1731 0.2957 0.0108 0.0000 0.0000 0.2308 0.2938 0.0145 0.0000 0.0000 0.2885 0.2919 0.0178 0.0000 0.0057 0.3462 0.2901 0.0211 0.0000 0.0101 0.4038 0.2882 0.0245 0.0000 0.0162 0.4615 0.2863 0.0279 0.0000 0.0243 0.5192 0.2844 0.0314 0.0000 0.0345 0.5769 0.2826 0.0348 0.0000 0.0471 0.6346 0.2807 0.0383 0.0000 0.0624 0.6923 0.2788 0.0418 0.0000 0.0804 0.7500 0.2770 0.0453 0.0000 0.1015 0.8077 0.2751 0.0488 0.0000 0.1257 0.8654 0.2733 0.0524 0.0000 0.1533 0.9231 0.2715 0.0560 0.0000 0.1845 0.9808 0.2696 0.0596 0.0000 0.2194 1.0385 0.2678 0.0633 0.0000 0.2582 1.0962 0.2660 0.0669 0.0000 0.3012 1.1538 0.2642 0.0706 0.0000 0.3484 1.2115 0.2624 0.0743 0.0000 0.4001 1.2692 0.2606 0.0781 0.0000 0.4564 1.3269 0.2588 0.0818 0.0000 0.5176 1.3846 0.2570 0.0856 0.0000 0.5837 22205 Bioretention 2/15/2023 2:46:37 PM Page 7 1.4423 0.2552 0.0894 0.0000 0.6549 1.5000 0.2534 0.0933 0.0000 0.7312 1.5577 0.2517 0.0971 0.0000 0.8126 1.6154 0.2499 0.1010 0.0000 0.8946 1.6731 0.2481 0.1049 0.0000 0.9004 1.7308 0.2464 0.1089 0.0000 0.9061 1.7500 0.2446 0.1102 0.0000 2.8756 Bioretention Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)To Amended(cfs)Infilt(cfs) 1.7500 0.3002 0.1102 0.0000 0.8918 0.0232 1.8077 0.3021 0.1276 0.0000 0.8918 0.0465 1.8654 0.3040 0.1451 0.0000 0.9203 0.0698 1.9231 0.3060 0.1627 0.0000 0.9487 0.0932 1.9808 0.3079 0.1804 0.0000 0.9772 0.1167 2.0385 0.3098 0.1982 0.0000 1.0056 0.1402 2.0962 0.3118 0.2161 0.0000 1.0341 0.1638 2.1538 0.3137 0.2342 0.0000 1.0626 0.1875 2.2115 0.3157 0.2523 0.0000 1.0910 0.2113 2.2692 0.3176 0.2706 0.0000 1.1195 0.2351 2.3269 0.3196 0.2890 0.0000 1.1479 0.2589 2.3846 0.3216 0.3075 0.0000 1.1764 0.2829 2.4423 0.3236 0.3261 0.0000 1.2049 0.3069 2.5000 0.3256 0.3448 0.0000 1.2333 0.3309 2.5577 0.3275 0.3636 0.0000 1.2618 0.3551 2.6154 0.3295 0.3826 0.0000 1.2903 0.3793 2.6731 0.3315 0.4017 0.0000 1.3187 0.4036 2.7308 0.3335 0.4208 0.0000 1.3472 0.4279 2.7885 0.3356 0.4401 0.0000 1.3756 0.4523 2.8462 0.3376 0.4596 0.0000 1.4041 0.4768 2.9038 0.3396 0.4791 0.0000 1.4326 0.5013 2.9615 0.3416 0.4987 0.0000 1.4610 0.5259 3.0192 0.3437 0.5185 0.0000 1.4895 0.5506 3.0769 0.3457 0.5384 0.0000 1.5179 0.5753 3.1346 0.3477 0.5584 0.0000 1.5464 0.6001 3.1923 0.3498 0.5785 0.0000 1.5749 0.6250 3.2500 0.3518 0.5988 0.0000 1.6033 0.6499 3.3077 0.3539 0.6191 0.0000 1.6318 0.6749 3.3654 0.3560 0.6396 0.0000 1.6603 0.7000 3.4231 0.3580 0.6602 0.0000 1.6887 0.7251 3.4808 0.3601 0.6809 0.0000 1.7172 0.7504 3.5385 0.3622 0.7017 0.0000 1.7456 0.7756 3.5962 0.3643 0.7227 0.0000 1.7741 0.8010 3.6538 0.3664 0.7438 0.0000 1.8026 0.8264 3.7115 0.3685 0.7650 0.0000 1.8310 0.8518 3.7692 0.3706 0.7863 0.0000 1.8595 0.8774 3.8269 0.3727 0.8077 0.0000 1.8880 0.9030 3.8846 0.3748 0.8293 0.0000 1.9164 0.9286 3.9423 0.3769 0.8510 0.0000 1.9449 0.9544 4.0000 0.3791 0.8728 0.0000 1.9733 0.9802 4.0577 0.3812 0.8947 0.0000 2.0018 1.0060 4.1154 0.3833 0.9168 0.0000 2.0303 1.0320 4.1731 0.3855 0.9390 0.0000 2.0587 1.0580 4.2308 0.3876 0.9613 0.0000 2.0872 1.0841 4.2885 0.3898 0.9837 0.0000 2.1156 1.1102 4.3462 0.3919 1.0062 0.0000 2.1441 1.1364 4.4038 0.3941 1.0289 0.0000 2.1726 1.1627 4.4615 0.3963 1.0517 0.0000 2.2010 1.1890 22205 Bioretention 2/15/2023 2:46:37 PM Page 8 4.5192 0.3985 1.0746 0.0000 2.2295 1.2154 4.5769 0.4006 1.0977 0.0000 2.2580 1.2419 4.6346 0.4028 1.1209 0.0000 2.2864 1.2684 4.6923 0.4050 1.1442 0.0000 2.3149 1.2950 4.7500 0.4072 1.1676 0.0000 2.3433 1.3217 4.8077 0.4094 1.1911 0.2940 2.3718 1.3484 4.8654 0.4116 1.2148 0.8304 2.4003 1.3752 4.9231 0.4138 1.2386 1.5217 2.4287 1.4021 4.9808 0.4161 1.2626 2.3316 2.4572 1.4290 5.0385 0.4183 1.2866 3.2324 2.4856 1.4560 5.0962 0.4205 1.3108 4.1981 2.5141 1.4831 5.1538 0.4228 1.3352 5.2022 2.5426 1.5102 5.2115 0.4250 1.3596 6.2177 2.5710 1.5283 5.2500 0.4265 1.3760 7.2173 2.5900 2.6042 22205 Bioretention 2/15/2023 2:46:37 PM Page 9 Surface Bioretention Element Flows To: Outlet 1 Outlet 2 Bioretention 22205 Bioretention 2/15/2023 2:46:37 PM Page 10 Analysis Results POC 1 + Predeveloped x Mitigated Predeveloped Landuse Totals for POC #1 Total Pervious Area:14.92 Total Impervious Area:0 Mitigated Landuse Totals for POC #1 Total Pervious Area:6.38 Total Impervious Area:8.09 Flow Frequency Method:Log Pearson Type III 17B Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.021949 5 year 0.060907 10 year 0.112291 25 year 0.229313 50 year 0.376525 100 year 0.602282 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0 5 year 0 10 year 0 25 year 0 50 year 0 100 year 0 Annual Peaks 22205 Bioretention 2/15/2023 2:48:44 PM Page 11 Annual Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1956 0.072 0.000 1957 0.016 0.000 1958 0.012 0.000 1959 0.012 0.000 1960 0.012 0.000 1961 0.052 0.000 1962 0.010 0.000 1963 0.012 0.000 1964 0.012 0.000 1965 0.011 0.000 1966 0.012 0.000 1967 0.019 0.000 1968 0.012 0.000 1969 0.012 0.000 1970 0.012 0.000 1971 0.095 0.000 1972 0.153 0.000 1973 0.011 0.000 1974 0.040 0.000 1975 0.011 0.000 1976 0.016 0.000 1977 0.011 0.000 1978 0.016 0.000 1979 0.011 0.000 1980 0.012 0.000 1981 0.027 0.000 1982 0.030 0.000 1983 0.012 0.000 1984 0.012 0.000 1985 0.011 0.000 1986 0.027 0.000 1987 0.025 0.000 1988 0.011 0.000 1989 0.011 0.000 1990 0.083 0.000 1991 0.125 0.000 1992 0.011 0.000 1993 0.011 0.000 1994 0.011 0.000 1995 0.072 0.000 1996 0.175 0.000 1997 0.115 0.000 1998 0.028 0.000 1999 0.011 0.000 2000 0.012 0.000 2001 0.010 0.000 2002 0.074 0.000 2003 0.011 0.000 2004 0.733 0.000 2005 0.118 0.000 2006 0.527 0.000 2007 0.227 0.000 2008 0.012 0.000 Ranked Annual Peaks Ranked Annual Peaks for Predeveloped and Mitigated. POC #1 22205 Bioretention 2/15/2023 2:48:44 PM Page 12 Rank Predeveloped Mitigated 1 0.7326 0.0000 2 0.5267 0.0000 3 0.2272 0.0000 4 0.1746 0.0000 5 0.1534 0.0000 6 0.1249 0.0000 7 0.1181 0.0000 8 0.1154 0.0000 9 0.0947 0.0000 10 0.0827 0.0000 11 0.0743 0.0000 12 0.0719 0.0000 13 0.0719 0.0000 14 0.0518 0.0000 15 0.0400 0.0000 16 0.0297 0.0000 17 0.0275 0.0000 18 0.0270 0.0000 19 0.0268 0.0000 20 0.0250 0.0000 21 0.0188 0.0000 22 0.0162 0.0000 23 0.0161 0.0000 24 0.0159 0.0000 25 0.0117 0.0000 26 0.0117 0.0000 27 0.0117 0.0000 28 0.0117 0.0000 29 0.0117 0.0000 30 0.0117 0.0000 31 0.0116 0.0000 32 0.0116 0.0000 33 0.0116 0.0000 34 0.0116 0.0000 35 0.0116 0.0000 36 0.0116 0.0000 37 0.0115 0.0000 38 0.0115 0.0000 39 0.0115 0.0000 40 0.0115 0.0000 41 0.0114 0.0000 42 0.0114 0.0000 43 0.0114 0.0000 44 0.0113 0.0000 45 0.0113 0.0000 46 0.0113 0.0000 47 0.0113 0.0000 48 0.0113 0.0000 49 0.0112 0.0000 50 0.0111 0.0000 51 0.0111 0.0000 52 0.0105 0.0000 53 0.0103 0.0000 22205 Bioretention 2/15/2023 2:48:44 PM Page 13 LID Duration Flows The Facility PASSED Flow(cfs)Predev Mit Percentage Pass/Fail 0.0018 24253 0 0 Pass 0.0018 23342 0 0 Pass 0.0019 22487 0 0 Pass 0.0020 21725 0 0 Pass 0.0021 20963 0 0 Pass 0.0022 20276 0 0 Pass 0.0023 19681 0 0 Pass 0.0024 19105 0 0 Pass 0.0025 18518 0 0 Pass 0.0026 17997 0 0 Pass 0.0027 17481 0 0 Pass 0.0028 16996 0 0 Pass 0.0029 16503 0 0 Pass 0.0030 16026 0 0 Pass 0.0031 15583 0 0 Pass 0.0032 15217 0 0 Pass 0.0032 14784 0 0 Pass 0.0033 14385 0 0 Pass 0.0034 13953 0 0 Pass 0.0035 13522 0 0 Pass 0.0036 13180 0 0 Pass 0.0037 12838 0 0 Pass 0.0038 12467 0 0 Pass 0.0039 12166 0 0 Pass 0.0040 11811 0 0 Pass 0.0041 11504 0 0 Pass 0.0042 11210 0 0 Pass 0.0043 10935 0 0 Pass 0.0044 10656 0 0 Pass 0.0045 10402 0 0 Pass 0.0045 10145 0 0 Pass 0.0046 9904 0 0 Pass 0.0047 9657 0 0 Pass 0.0048 9395 0 0 Pass 0.0049 9186 0 0 Pass 0.0050 8989 0 0 Pass 0.0051 8752 0 0 Pass 0.0052 8532 0 0 Pass 0.0053 8305 0 0 Pass 0.0054 8103 0 0 Pass 0.0055 7913 0 0 Pass 0.0056 7722 0 0 Pass 0.0057 7532 0 0 Pass 0.0058 7324 0 0 Pass 0.0059 7150 0 0 Pass 0.0059 6982 0 0 Pass 0.0060 6817 0 0 Pass 0.0061 6653 0 0 Pass 0.0062 6508 0 0 Pass 0.0063 6350 0 0 Pass 0.0064 6189 0 0 Pass 0.0065 5992 0 0 Pass 0.0066 5843 0 0 Pass 22205 Bioretention 2/15/2023 2:48:44 PM Page 14 0.0067 5676 0 0 Pass 0.0068 5507 0 0 Pass 0.0069 5351 0 0 Pass 0.0070 5204 0 0 Pass 0.0071 5077 0 0 Pass 0.0072 4942 0 0 Pass 0.0072 4786 0 0 Pass 0.0073 4650 0 0 Pass 0.0074 4501 0 0 Pass 0.0075 4380 0 0 Pass 0.0076 4241 0 0 Pass 0.0077 4107 0 0 Pass 0.0078 3960 0 0 Pass 0.0079 3841 0 0 Pass 0.0080 3713 0 0 Pass 0.0081 3579 0 0 Pass 0.0082 3457 0 0 Pass 0.0083 3340 0 0 Pass 0.0084 3211 0 0 Pass 0.0085 3104 0 0 Pass 0.0086 3001 0 0 Pass 0.0086 2892 0 0 Pass 0.0087 2793 0 0 Pass 0.0088 2700 0 0 Pass 0.0089 2596 0 0 Pass 0.0090 2503 0 0 Pass 0.0091 2423 0 0 Pass 0.0092 2323 0 0 Pass 0.0093 2225 0 0 Pass 0.0094 2121 0 0 Pass 0.0095 2016 0 0 Pass 0.0096 1922 0 0 Pass 0.0097 1845 0 0 Pass 0.0098 1758 0 0 Pass 0.0099 1670 0 0 Pass 0.0100 1578 0 0 Pass 0.0100 1494 0 0 Pass 0.0101 1404 0 0 Pass 0.0102 1315 0 0 Pass 0.0103 1227 0 0 Pass 0.0104 1142 0 0 Pass 0.0105 1062 0 0 Pass 0.0106 969 0 0 Pass 0.0107 894 0 0 Pass 0.0108 826 0 0 Pass 0.0109 745 0 0 Pass 0.0110 688 0 0 Pass 22205 Bioretention 2/15/2023 2:49:07 PM Page 15 Duration Flows The Facility PASSED Flow(cfs)Predev Mit Percentage Pass/Fail 0.0110 1535 0 0 Pass 0.0147 155 0 0 Pass 0.0184 121 0 0 Pass 0.0221 98 0 0 Pass 0.0257 81 0 0 Pass 0.0294 61 0 0 Pass 0.0331 52 0 0 Pass 0.0368 49 0 0 Pass 0.0405 45 0 0 Pass 0.0442 38 0 0 Pass 0.0479 37 0 0 Pass 0.0516 34 0 0 Pass 0.0553 32 0 0 Pass 0.0590 30 0 0 Pass 0.0627 29 0 0 Pass 0.0664 27 0 0 Pass 0.0701 26 0 0 Pass 0.0737 23 0 0 Pass 0.0774 19 0 0 Pass 0.0811 18 0 0 Pass 0.0848 16 0 0 Pass 0.0885 16 0 0 Pass 0.0922 15 0 0 Pass 0.0959 13 0 0 Pass 0.0996 11 0 0 Pass 0.1033 9 0 0 Pass 0.1070 9 0 0 Pass 0.1107 9 0 0 Pass 0.1144 9 0 0 Pass 0.1181 8 0 0 Pass 0.1217 6 0 0 Pass 0.1254 5 0 0 Pass 0.1291 5 0 0 Pass 0.1328 5 0 0 Pass 0.1365 5 0 0 Pass 0.1402 5 0 0 Pass 0.1439 5 0 0 Pass 0.1476 5 0 0 Pass 0.1513 5 0 0 Pass 0.1550 4 0 0 Pass 0.1587 4 0 0 Pass 0.1624 4 0 0 Pass 0.1661 4 0 0 Pass 0.1697 4 0 0 Pass 0.1734 4 0 0 Pass 0.1771 3 0 0 Pass 0.1808 3 0 0 Pass 0.1845 3 0 0 Pass 0.1882 3 0 0 Pass 0.1919 3 0 0 Pass 0.1956 3 0 0 Pass 0.1993 3 0 0 Pass 0.2030 3 0 0 Pass 22205 Bioretention 2/15/2023 2:49:07 PM Page 16 0.2067 3 0 0 Pass 0.2104 3 0 0 Pass 0.2141 3 0 0 Pass 0.2178 3 0 0 Pass 0.2214 3 0 0 Pass 0.2251 3 0 0 Pass 0.2288 2 0 0 Pass 0.2325 2 0 0 Pass 0.2362 2 0 0 Pass 0.2399 2 0 0 Pass 0.2436 2 0 0 Pass 0.2473 2 0 0 Pass 0.2510 2 0 0 Pass 0.2547 2 0 0 Pass 0.2584 2 0 0 Pass 0.2621 2 0 0 Pass 0.2658 2 0 0 Pass 0.2694 2 0 0 Pass 0.2731 2 0 0 Pass 0.2768 2 0 0 Pass 0.2805 2 0 0 Pass 0.2842 2 0 0 Pass 0.2879 2 0 0 Pass 0.2916 2 0 0 Pass 0.2953 2 0 0 Pass 0.2990 2 0 0 Pass 0.3027 2 0 0 Pass 0.3064 2 0 0 Pass 0.3101 2 0 0 Pass 0.3138 2 0 0 Pass 0.3174 2 0 0 Pass 0.3211 2 0 0 Pass 0.3248 2 0 0 Pass 0.3285 2 0 0 Pass 0.3322 2 0 0 Pass 0.3359 2 0 0 Pass 0.3396 2 0 0 Pass 0.3433 2 0 0 Pass 0.3470 2 0 0 Pass 0.3507 2 0 0 Pass 0.3544 2 0 0 Pass 0.3581 2 0 0 Pass 0.3618 2 0 0 Pass 0.3654 2 0 0 Pass 0.3691 2 0 0 Pass 0.3728 2 0 0 Pass 0.3765 2 0 0 Pass 22205 Bioretention 2/15/2023 2:49:07 PM Page 17 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. 22205 Bioretention 2/15/2023 2:49:07 PM Page 18 LID Report 22205 Bioretention 2/15/2023 2:49:21 PM Page 19 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. 22205 Bioretention 2/15/2023 2:49:21 PM Page 20 Appendix Predeveloped Schematic 22205 Bioretention 2/15/2023 2:49:22 PM Page 21 Mitigated Schematic 22205 Bioretention 2/15/2023 2:49:24 PM Page 22 Predeveloped UCI File RUN GLOBAL WWHM4 model simulation START 1955 10 01 END 2008 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 22205 Bioretention.wdm MESSU 25 Pre22205 Bioretention.MES 27 Pre22205 Bioretention.L61 28 Pre22205 Bioretention.L62 30 POC22205 Bioretention1.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 PERLND 1 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 *** 1 A/B, Forest, 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 *** 1 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 ********* 1 0 0 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO 22205 Bioretention 2/15/2023 2:49:24 PM Page 23 PWAT-PARM1 <PLS > PWATER variable monthly parameter value flags *** # - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT *** 1 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 1 0 5 2 400 0.05 0.3 0.996 END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 *** # - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP 1 0 0 2 2 0 0 0 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 *** # - # CEPSC UZSN NSUR INTFW IRC LZETP *** 1 0.2 0.5 0.35 0 0.7 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 1 0 0 0 0 3 1 0 END PWAT-STATE1 END PERLND IMPLND GEN-INFO <PLS ><-------Name-------> Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 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 22205 Bioretention 2/15/2023 2:49:24 PM Page 24 END IMPLND SCHEMATIC <-Source-> <--Area--> <-Target-> MBLK *** <Name> # <-factor-> <Name> # Tbl# *** Basin 1*** PERLND 1 14.47 COPY 501 12 PERLND 1 14.47 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 0.857 PERLND 1 999 EXTNL PREC WDM 2 PREC ENGL 0.857 IMPLND 1 999 EXTNL PREC 22205 Bioretention 2/15/2023 2:49:24 PM Page 25 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 22205 Bioretention 2/15/2023 2:49:24 PM Page 26 Mitigated UCI File RUN GLOBAL WWHM4 model simulation START 1955 10 01 END 2008 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 22205 Bioretention.wdm MESSU 25 Mit22205 Bioretention.MES 27 Mit22205 Bioretention.L61 28 Mit22205 Bioretention.L62 30 POC22205 Bioretention1.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 PERLND 4 IMPLND 1 IMPLND 4 GENER 2 RCHRES 1 RCHRES 2 COPY 1 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 Surface Bioretention 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 *** 2 24 END OPCODE PARM # # K *** 2 0. END PARM END GENER PERLND GEN-INFO <PLS ><-------Name------->NBLKS Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 4 A/B, Pasture, 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 *** 4 0 0 1 0 0 0 0 0 0 0 0 0 22205 Bioretention 2/15/2023 2:49:24 PM Page 27 END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ***************************** PIVL PYR # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ********* 4 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 *** 4 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 4 0 5 1.5 400 0.05 0.3 0.996 END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 *** # - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP 4 0 0 2 2 0 0 0 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 *** # - # CEPSC UZSN NSUR INTFW IRC LZETP *** 4 0.15 0.5 0.3 0 0.7 0.4 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 4 0 0 0 0 3 1 0 END PWAT-STATE1 END PERLND IMPLND GEN-INFO <PLS ><-------Name-------> Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 1 ROADS/FLAT 1 1 1 27 0 4 ROOF TOPS/FLAT 1 1 1 27 0 END GEN-INFO *** Section IWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** 1 0 0 1 0 0 0 4 0 0 1 0 0 0 END ACTIVITY PRINT-INFO <ILS > ******** Print-flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* 1 0 0 4 0 0 0 1 9 4 0 0 4 0 0 0 1 9 END PRINT-INFO IWAT-PARM1 <PLS > IWATER variable monthly parameter value flags *** # - # CSNO RTOP VRS VNN RTLI *** 1 0 0 0 0 0 4 0 0 0 0 0 END IWAT-PARM1 22205 Bioretention 2/15/2023 2:49:24 PM Page 28 IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC 1 400 0.01 0.1 0.1 4 400 0.01 0.1 0.1 END IWAT-PARM2 IWAT-PARM3 <PLS > IWATER input info: Part 3 *** # - # ***PETMAX PETMIN 1 0 0 4 0 0 END IWAT-PARM3 IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS 1 0 0 4 0 0 END IWAT-STATE1 END IMPLND SCHEMATIC <-Source-> <--Area--> <-Target-> MBLK *** <Name> # <-factor-> <Name> # Tbl# *** Basin 1*** PERLND 4 6.38 RCHRES 1 2 PERLND 4 6.38 RCHRES 1 3 IMPLND 1 3.46 RCHRES 1 5 IMPLND 4 4.63 RCHRES 1 5 ******Routing****** PERLND 4 6.38 COPY 1 12 IMPLND 1 3.46 COPY 1 15 IMPLND 4 4.63 COPY 1 15 PERLND 4 6.38 COPY 1 13 RCHRES 1 1 RCHRES 2 8 RCHRES 2 1 COPY 501 17 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 GENER 2 OUTPUT TIMSER .0011111 RCHRES 1 EXTNL OUTDGT 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 Surface Bioreten-009 3 1 1 1 28 0 1 2 Bioretention 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 2 1 0 0 0 0 0 0 0 0 0 22205 Bioretention 2/15/2023 2:49:24 PM Page 29 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 2 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 6 0 0 0 1 0 0 0 2 1 2 2 2 2 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 *** <------><--------><--------><--------><--------><--------><--------> *** 1 1 0.01 0.0 0.0 0.0 0.0 2 2 0.03 0.0 0.0 0.0 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 6.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2 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 *** User-Defined Variable Quantity Lines *** addr *** <------> *** kwd varnam optyp opn vari s1 s2 s3 tp multiply lc ls ac as agfn *** <****> <----> <----> <-> <----><-><-><-><-><--------> <><-> <><-> <--> *** UVQUAN vol2 RCHRES 2 VOL 4 UVQUAN v2m2 GLOBAL WORKSP 1 3 UVQUAN vpo2 GLOBAL WORKSP 2 3 UVQUAN v2d2 GENER 2 K 1 3 *** User-Defined Target Variable Names *** addr or addr or *** <------> <------> *** kwd varnam ct vari s1 s2 s3 frac oper vari s1 s2 s3 frac oper <****> <----><-> <----><-><-><-> <---> <--> <----><-><-><-> <---> <--> UVNAME v2m2 1 WORKSP 1 1.0 QUAN UVNAME vpo2 1 WORKSP 2 1.0 QUAN UVNAME v2d2 1 K 1 1.0 QUAN *** opt foplop dcdts yr mo dy hr mn d t vnam s1 s2 s3 ac quantity tc ts rp <****><-><--><><-><--> <> <> <> <><><> <----><-><-><-><-><--------> <> <-><-> GENER 2 v2m2 = 7388.24 *** Compute remaining available pore space GENER 2 vpo2 = v2m2 GENER 2 vpo2 -= vol2 *** Check to see if VPORA goes negative; if so set VPORA = 0.0 IF (vpo2 < 0.0) THEN GENER 2 vpo2 = 0.0 END IF *** Infiltration volume GENER 2 v2d2 = vpo2 END SPEC-ACTIONS FTABLES FTABLE 2 32 5 Depth Area Volume Outflow1 Outflow2 Velocity Travel Time*** (ft) (acres) (acre-ft) (cfs) (cfs) (ft/sec) (Minutes)*** 22205 Bioretention 2/15/2023 2:49:24 PM Page 30 0.000000 0.300189 0.000000 0.000000 0.000000 0.057692 0.299551 0.003576 0.000000 0.000000 0.115385 0.297641 0.007178 0.000000 0.000000 0.173077 0.295736 0.010806 0.000000 0.000000 0.230769 0.293836 0.014459 0.000000 0.000000 0.288462 0.291942 0.017790 0.000000 0.005697 0.346154 0.290054 0.021145 0.000000 0.010079 0.403846 0.288171 0.024524 0.000000 0.016184 0.461538 0.286293 0.027926 0.000000 0.024250 0.519231 0.284421 0.031351 0.000000 0.034499 0.576923 0.282554 0.034801 0.000000 0.047144 0.634615 0.280693 0.038274 0.000000 0.062389 0.692308 0.278838 0.041771 0.000000 0.080433 0.750000 0.276988 0.045292 0.000000 0.101472 0.807692 0.275143 0.048837 0.000000 0.125697 0.865385 0.273304 0.052406 0.000000 0.153298 0.923077 0.271471 0.055999 0.000000 0.184460 0.980769 0.269643 0.059616 0.000000 0.219369 1.038462 0.267820 0.063258 0.000000 0.258208 1.096154 0.266003 0.066924 0.000000 0.301158 1.153846 0.264192 0.070614 0.000000 0.348398 1.211538 0.262386 0.074329 0.000000 0.400104 1.269231 0.260585 0.078069 0.000000 0.456448 1.326923 0.258790 0.081833 0.000000 0.517594 1.384615 0.257001 0.085622 0.000000 0.583695 1.442308 0.255217 0.089436 0.000000 0.654879 1.500000 0.253438 0.093275 0.000000 0.731213 1.557692 0.251665 0.097138 0.000000 0.812567 1.615385 0.249898 0.101027 0.000000 0.894601 1.673077 0.248136 0.104941 0.000000 0.900363 1.730769 0.246379 0.108880 0.000000 0.906143 1.750000 0.244628 0.169611 0.000000 2.875564 END FTABLE 2 FTABLE 1 62 6 Depth Area Volume Outflow1 Outflow2 Outflow3 Velocity Travel Time*** (ft) (acres) (acre-ft) (cfs) (cfs) (cfs) (ft/sec) (Minutes)*** 0.000000 0.244628 0.000000 0.000000 0.000000 0.023206 0.057692 0.302107 0.017374 0.000000 0.891796 0.023206 0.115385 0.304031 0.034859 0.000000 0.920257 0.046479 0.173077 0.305960 0.052455 0.000000 0.948719 0.069819 0.230769 0.307894 0.070162 0.000000 0.977180 0.093225 0.288462 0.309834 0.087981 0.000000 1.005642 0.116697 0.346154 0.311779 0.105912 0.000000 1.034103 0.140237 0.403846 0.313730 0.123956 0.000000 1.062565 0.163842 0.461538 0.315686 0.142112 0.000000 1.091027 0.187515 0.519231 0.317648 0.160381 0.000000 1.119488 0.211254 0.576923 0.319616 0.178764 0.000000 1.147950 0.235059 0.634615 0.321589 0.197260 0.000000 1.176411 0.258931 0.692308 0.323567 0.215870 0.000000 1.204873 0.282870 0.750000 0.325551 0.234595 0.000000 1.233334 0.306875 0.807692 0.327540 0.253434 0.000000 1.261796 0.330947 0.865385 0.329535 0.272388 0.000000 1.290257 0.355085 0.923077 0.331536 0.291458 0.000000 1.318719 0.379290 0.980769 0.333542 0.310642 0.000000 1.347181 0.403561 1.038462 0.335553 0.329943 0.000000 1.375642 0.427899 1.096154 0.337570 0.349360 0.000000 1.404104 0.452304 1.153846 0.339592 0.368894 0.000000 1.432565 0.476775 1.211538 0.341620 0.388544 0.000000 1.461027 0.501313 1.269231 0.343654 0.408312 0.000000 1.489488 0.525917 1.326923 0.345693 0.428197 0.000000 1.517950 0.550588 1.384615 0.347737 0.448199 0.000000 1.546411 0.575325 1.442308 0.349787 0.468320 0.000000 1.574873 0.600129 1.500000 0.351842 0.488560 0.000000 1.603335 0.625000 1.557692 0.353903 0.508918 0.000000 1.631796 0.649937 1.615385 0.355970 0.529395 0.000000 1.660258 0.674941 1.673077 0.358042 0.549991 0.000000 1.688719 0.700011 1.730769 0.360119 0.570707 0.000000 1.717181 0.725148 22205 Bioretention 2/15/2023 2:49:24 PM Page 31 1.788462 0.362202 0.591544 0.000000 1.745642 0.750351 1.846154 0.364290 0.612500 0.000000 1.774104 0.775621 1.903846 0.366384 0.633577 0.000000 1.802566 0.800958 1.961538 0.368484 0.654775 0.000000 1.831027 0.826361 2.019231 0.370589 0.676095 0.000000 1.859489 0.851831 2.076923 0.372699 0.697536 0.000000 1.887950 0.877367 2.134615 0.374815 0.719099 0.000000 1.916412 0.902970 2.192308 0.376936 0.740784 0.000000 1.944873 0.928639 2.250000 0.379063 0.762591 0.000000 1.973335 0.954375 2.307692 0.381196 0.784522 0.000000 2.001796 0.980178 2.365385 0.383334 0.806576 0.000000 2.030258 1.006047 2.423077 0.385477 0.828753 0.000000 2.058720 1.031982 2.480769 0.387626 0.851054 0.000000 2.087181 1.057984 2.538462 0.389781 0.873479 0.000000 2.115643 1.084053 2.596154 0.391941 0.896029 0.000000 2.144104 1.110189 2.653846 0.394106 0.918703 0.000000 2.172566 1.136391 2.711538 0.396277 0.941503 0.000000 2.201027 1.162659 2.769231 0.398453 0.964428 0.000000 2.229489 1.188994 2.826923 0.400635 0.987478 0.000000 2.257951 1.215396 2.884615 0.402823 1.010655 0.000000 2.286412 1.241864 2.942308 0.405016 1.033958 0.000000 2.314874 1.268399 3.000000 0.407214 1.057388 0.000000 2.343335 1.295000 3.057692 0.409418 1.080944 0.293964 2.371797 1.321668 3.115385 0.411628 1.104628 0.830375 2.400258 1.348402 3.173077 0.413843 1.128440 1.521709 2.428720 1.375203 3.230769 0.416063 1.152380 2.331616 2.457181 1.402071 3.288462 0.418289 1.176448 3.232411 2.485643 1.429005 3.346154 0.420520 1.200644 4.198067 2.514105 1.456006 3.403846 0.422757 1.224969 5.202190 2.542566 1.483073 3.461538 0.425000 1.249424 6.217696 2.571028 1.510207 3.500000 0.426498 1.265799 7.217303 2.590002 1.528333 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 0.857 PERLND 1 999 EXTNL PREC WDM 2 PREC ENGL 0.857 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 0.857 RCHRES 1 EXTNL PREC WDM 1 EVAP ENGL 0.5 RCHRES 1 EXTNL POTEV WDM 1 EVAP ENGL 0.76 RCHRES 2 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 2 HYDR RO 1 1 1 WDM 1004 FLOW ENGL REPL RCHRES 2 HYDR O 1 1 1 WDM 1008 FLOW ENGL REPL RCHRES 2 HYDR O 2 1 1 WDM 1009 FLOW ENGL REPL RCHRES 2 HYDR STAGE 1 1 1 WDM 1005 STAG ENGL REPL RCHRES 1 HYDR STAGE 1 1 1 WDM 1006 STAG ENGL REPL RCHRES 1 HYDR O 1 1 1 WDM 1007 FLOW ENGL REPL COPY 1 OUTPUT MEAN 1 1 48.4 WDM 701 FLOW ENGL REPL COPY 501 OUTPUT MEAN 1 1 48.4 WDM 801 FLOW ENGL REPL END EXT TARGETS MASS-LINK <Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->*** <Name> <Name> # #<-factor-> <Name> <Name> # #*** MASS-LINK 2 PERLND PWATER SURO 0.083333 RCHRES INFLOW IVOL END MASS-LINK 2 MASS-LINK 3 PERLND PWATER IFWO 0.083333 RCHRES INFLOW IVOL END MASS-LINK 3 22205 Bioretention 2/15/2023 2:49:24 PM Page 32 MASS-LINK 5 IMPLND IWATER SURO 0.083333 RCHRES INFLOW IVOL END MASS-LINK 5 MASS-LINK 8 RCHRES OFLOW OVOL 2 RCHRES INFLOW IVOL END MASS-LINK 8 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 22205 Bioretention 2/15/2023 2:49:24 PM Page 33 Predeveloped HSPF Message File 22205 Bioretention 2/15/2023 2:49:24 PM Page 34 Mitigated HSPF Message File ERROR/WARNING ID: 341 5 DATE/TIME: 1985/ 1/ 4 6:15 RCHRES: 2 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT -8.250E+01 2.5599E+04 -2.905E-05 -0.00081 -9.466E-10 2 22205 Bioretention 2/15/2023 2:49:24 PM Page 35 Disclaimer Legal Notice This program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright © by : Clear Creek Solutions, Inc. 2005-2023; All Rights Reserved. Clear Creek Solutions, Inc. 6200 Capitol Blvd. Ste F Olympia, WA. 98501 Toll Free 1(866)943-0304 Local (360)943-0304 www.clearcreeksolutions.com