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23-100364-Preliminary TIR-02.28.2023PRELIMINARY TECHNICAL INFORMATION REPORT Bilovil Short Plat 36XXX 61h Avenue SW Federal Way, WA 98023 Prepared For: Mykhaylo Bilovil 506 SW 3661hSt Federal Way, WA 98023 {aN-5 M. F 6 X 4=4 O I 1/20/23 Date: January 20, 2023 m � 4625 — 126`h Avenue East, Edgewood, WA98372 (206) 450-5096 TK q3 J O/ \�Cr www.tebaldiengineering.com �NGINee� TABLE OF CONTENTS 1.0 PROJECT OVERVIEW Figure 1—Technical Information Report (TIR)Worksheet Figure 2 — Vicinity Map 2.0 CONDITIONS AND REQUIREMENTS SUMMARY 2.1 Analysis of the Core Requirements 2.2 Analysis of the Special Requirements 3.0 OFF -SITE ANALYSIS Figure 3 — Downstream Map 4.0 FLOW CONTROL, LOW IMPACT DEVELOPMENT (LID) AND WATER QUALITY FACILITY ANALYSIS AND DESIGN A. Existing Site Hydrology Figure 4 — Soils B. Developed Site Hydrology C. Performance Standards D. Flow Co ntro I Syste m E. Water Quality System 5.0 CONVEYANCE SYSTEM ANALYSIS AND DESIGN 6.0 SPECIAL REPORTS AND STUDIES 7.0 OTHER PERMITS 8.0 CSWPPANALYSIS AND DESIGN 9.0 BOND QUANTITIES, FACILITY SUMMARIES, AND DECLARATION OF COVENANT 10.0 OPERATIONS AND MAINTENANCE MANUAL AppendixA - Soils Evaluation prepared by Westside Septic dated December 10, 2018 AppendixB- WWHM Calculations 1.0 PROJECT OVERVIEW The project is located in the City of Federal Way at 35XXX 6th Avenue SW, Federal Way, WA on tax parcel number3021049155. Mores pecifica I ly, the project is located in Section 31, Township 21 North, Range 4 East, Willamette Meridian, King County, Washington. The project proposes subdivide the existing parcels into 2 total lots. An area table has been provided below in this section. The 0.73 -acre property is bound by single-family residences to the north and east with SW 366th Street to the south and 6thAveue SW to the west. The existing topography varies from approximately 0 to 40 percent and the site generally falls from northwest to southeast. The vegetation on the project site consists of existing forest with some pasture. In the existing condition, runoff from the project area sheet flows to the southeast to the existing storm system in SW 366th Street. Runoff in the developed condition will be handled through the use of infiltration to the maximum extentfeasible. Where infiltration is infeasible, dispersion will be utilized. There are no known critical areas on the subject property. Area Summary Pre -Developed Developed Parcel Area 31,986 SF 31,986 SF Project Area (clearing limits) 30,083 SF 30,083 SF Pervious 28,406 SF 13,031 SF On -site approx. Clearing - 14,000 SF Driveway(PGIS)—Onsite* - 2,000 SF Roof* * - 6,000 SF Total Onsite Impervious - 8,000 SF Frontage Improvements 1,677 SF 9,052 SF Total Offsite Impervious 1,677 SF 9,052 SF Total Impervious 1,677 SF 17,052 SF *Assumes 1,000 SF per lot * *Assumes 4,000 SF per lot max. to dispersion « ct ' « «' a &. w Ku a Ln a� \ k, < dro \� / » \ / k 4 \ am- ® _ % \ \ g21 w My 3 m Q . / &K / Two O$ e . dam & . %V ay k ±'75 & SWae3d : I— \ \ : NORTH . sag} / D \ t / « § 563 rd .m :$ Hyl@bos ' L�> Wed an Ll s SW 368th a $w KhSZ \ / � _ r '§ u. I. o � .. •I . � FOR: JOB# TEBALD|ENGINEERING, LLC B|LOVI L SHORT PLAT 4625 —126TH AVENUE EAST EDGEWOOD,WAg8372 TITLE: VICINITY MAP KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 1 PROJECT OWNER AND PROJECT ENGINEER Project Owner Mykhaylo Bllovll Phone Address 506 SW 366th St Federal Way, WA 98023 Project Engineer Chris Tebaldi, P.E. Company Tebaldi Engineering, LLC Phone 206-450-5096 Part 3 TYPE OF PERMIT APPLICATION ® Landuse (e.g.,Subdivision / Short Subd. / UPD) ❑ Building (e.g.,M/F / Commercial / SFR) ❑ Clearing and Grading ❑ Right -of -Way Use ❑ Other Part 2 PROJECT LOCATION AND DESCRIPTION Project Name Bilovil Short Plat DPER Permit # Location Township Range Section Site Address 35XXX 6th Ave SW Federal Way, WA 98023 Part 4 OTHER REVIEWS AND PERMITS ❑ DFW HPA ❑ Shoreline ❑ ❑ ❑ ❑ COE 404 DOE Dam Safety FEMA Floodplain COE Wetlands Management ❑ Structural Rockery/Vault/ ❑ ESA Section 7 ❑ Other Part 5 PLAN AND REPORT INFORMATION Technical Information Report Site Improvement Plan (Engr. Plans) ® Full Type of Drainage Review ❑ Targeted Plan Type (check ® ❑ Full (check one): ❑ Simplified one): Modified ❑ Large Project ❑ Simplified Date (include revision ❑ Directed 1 /20/23 Date (include revision 1/20/23 dates): dates): Date of Final: Date of Final: Part 6 SWDM ADJUSTMENT APPROVALS Type (circle one): Standard / Experimental / Blanket Description: (include conditions in TIR Section 2) Approved Adjustment No. Date of Approval: 2016 Surface Water Design Manual 4/24/2016 1 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 7 MONITORING REQUIREMENTS Monitoring Required: Yes / No Start Date: Completion Date: Describe: Re: KCSWDM Adjustment No. Part 8 SITE COMMUNITY AND DRAINAGE BASIN Community Plan : Special District Overlays: Drainage Basin: Stormwater Requirements: Part 9 ONSITE AND ADJACENT SENSITIVE AREAS ❑ River/Stream ❑ Lake ❑ Wetlands ❑ Closed Depression ❑ Floodplain ❑ Other Part 10 SOILS Soil Type ALDERWOOD Slopes 0-6% ❑ High Groundwater Table (within 5 feet) ❑ Other ❑ Additional Sheets Attached ❑ Steep Slope ❑ Erosion Hazard ❑ Landslide Hazard ❑ Coal Mine Hazard ❑ Seismic Hazard ❑ Habitat Protection Ll ❑ Sole Source Aquifer ❑ Seeps/Springs Erosion Potential 2016 Surface Water Design Manual 4/24/2016 2 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 11 DRAINAGE DESIGN LIMITATIONS REFERENCE LIMITATION / SITE CONSTRAINT ❑ Core 2 — Offsite Analysis ❑ Sensitive/Critical Areas ❑ SEPA ❑ LID Infeasibility ❑ Other Ll ❑ Additional Sheets Attached Part 12 TIR SUMMARY SHEET (provide one TIR Summary Sheet per Threshold Discharge Area) Threshold Discharge Area: (name or description) Bilovil Core Requirements (all 8 apply): Discharge at Natural Location Number of Natural Discharge Locations: 1 Offsite Analysis Level: 10/ 2 / 3 dated: Flow Control (include facility Level: 1 / Q/ 3 or Exemption Number summary sheet) Flow Control BMPs Infiltration/Dispersion Conveyance System Spill containment located at: Sediment Control Structure Erosion and Sediment Control / CSWPP/CESCL/ESC Site Supervisor: Construction Stormwater Contact Phone: Pollution Prevention After Hours Phone: Maintenance and Operation Responsibility (circle one): <Erivat / Public If Private, Maintenance Log Required: Yes / No Financial Guarantees and Provided: Yes KS) Liability Water Quality (include facility Type (circle one): Basic / Sens. Lake / Enhanced Basic / Bog summary sheet) or Exemption No. Landscape Management Plan: Yes / No Special Requirements (as applicable): Area Specific Drainage Type: CDA / SDO / MDP / BP / LMP / Shared Fac. / None Requirements Name: Flood plain/Floodway Delineation Type (circle one): Major / Minor / Exemption / None 100-year Base Flood Elevation (or range): Datum: Flood Protection Facilities Describe: 2016 Surface Water Design Manual 4/24/2016 3 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 12 TIR SUMMARY SHEET (provide one TIR Summary Sheet per Threshold Discharge Area) Source Control Describe land use: (commercial / industrial land use) Describe any structural controls: Oil Control High -use Site: Yes / No Treatment BMP: Maintenance Agreement: Yes / No with whom? Other Drainage Structures Describe: Part 13 EROSION AND SEDIMENT CONTROL REQUIREMENTS MINIMUM ESC REQUIREMENTS MINIMUM ESC REQUIREMENTS DURING CONSTRUCTION AFTER CONSTRUCTION ® Clearing Limits ® Stabilize exposed surfaces ® Cover Measures ❑ Remove and restore Temporary ESC Facilities ® Perimeter Protection ® Clean and remove all silt and debris, ensure ® Traffic Area Stabilization operation of Permanent Facilities, restore ❑ Sediment Retention operation of Flow Control BMP Facilities as necessary ❑ Surface Water Collection ❑ Flag limits of SAO and open space preservation ❑ Dewatering Control areas ❑ Dust Control ❑ Other ❑ Flow Control ❑ Protection of Flow Control BMP Facilities (existing and proposed) ® Maintain BMPs / Manage Project Part 14 STORMWATER FACILITY DESCRIPTIONS (Note: Include Facility Summary and Sketch) Flow Control Type/Description Water Quality Type/Description ❑ Detention ® Infiltration ❑ Regional Facility ❑ Shared Facility ❑ Flow Control BMPs ❑ Other ❑ Vegetated Flowpath ❑ Wetpool ❑ Filtration ❑ Oil Control ❑ Spill Control ❑ Flow Control BMPs ❑ Other 2016 Surface Water Design Manual 4/24/2016 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 15 EASEMENTS/TRACTS Part 16 STRUCTURAL ANALYSIS ❑ Drainage Easement ❑ Cast in Place Vault ❑ Covenant ❑ Retaining Wall ❑ Native Growth Protection Covenant ❑ Rockery > 4' High ❑ Tract ❑ Structural on Steep Slope ❑ Other ❑ Other I Part 17 SIGNATURE OF PROFESSIONAL ENGINEER I I, or a civil engineer under my supervision, have visited the site. Actual site conditions as observed were incorporated into this worksheet and the attached Technical Information Report. To the best of my knowledge the information provided here is accurate. w 1 /20/23 Signed/Date 2016 Surface Water Design Manual 4/24/2016 2.0 CONDITIONS AND REQUIREMENTS SUMMARY 2.1 Analysis of the Core Requirements Core Requirement No.1: Discharge at the Natural Location. Response: The existing site currently sheet flows to the east to the storm drainage system in SW 366tn Street. Runoff in the developed condition will be infiltrated and/or dispersed to the existing storm drainage system. Core Requirement No.2: Off -Site Analysis. Response: A downstream analysis has been completed. See section 3.0 of this report. Core Requirement No.3: Flow Control. Response: Flow control requirement thresholds have not been exceeded in accordance with the 2021 King County Surface Water Design Manual(KCSWDM). See section4.0. Core Requirement No.4: Conveyance System. Response: The proposed conveyance system has been designed to convey the 100-year design storm. Please referto Section 5.0 for calculations. Core Requirement No. 5: Construction Stormwater Pollution Prevention. Response: Temporary erosion control measures forthis project include stabilized construction entrance, perimeter runoff control; cover practices of the disturbed areas and construction sequence. Core Requirement No. 6: Maintenance and Operations. Response: The drainage facilities for this project will be privately maintained and have been designed in accordance with the 2021 KCSWDM requirements. Core Requirement No.7: Financial Guarantees and Liability. Response: No financial guarantees are anticipated as apart of this proposal. Core Requirement No.8: Water Quality. Response: Water quality treatment is not required as the pollution generating impervious surface is less than 5,000 square feet. Core Requirement No.9: Flow Control BMPs Response: The proposed project will utilize the list approach to the flow control BMP requirement. See section 4.0 of this report. 2.2 Analysis of the Special Requirements Special Requirement No.1: Other Adopted Area -Specific Requirements. Response: This special requirement does not apply to this project. Special Requirement No. 2: Flood Hazard Area Delineation. Response: The project is not located in a flood plain orfloodway. Special Requirement No.3: Flood Protection Facilities. Response: This requirement does not apply. Special Requirement No.4: Source Control. Response: This requirement does not apply. Special Requirement No.5: Oil Control. Response: This requirement does not apply. 3.0 OFF -SITE ANALYSIS Th e p roj e ct site cu rre ntly s h e et f lows to th e so uthe ast. Runoff fromthesiteflows westtotheSW366tn Street drainage system which consists of ditches and culverts. Runoff travels east for approximately 1,800 feet where it is discharged into the Hylebos Wetlands. Runoff then flows east in the Hylebos Wetlands for approximately 1,200 feet to Hylebos Creek. Runoff continues generally south and west ultimately discharging into the Puget Sound. See Downstream Map in this section. DOWNSTREAM DRAINAGE MAP F's Wmin I�i '. MGM! HIMM M 11 Y r NF�im SITE � F III .9 A� 1 6- r 1V I 0A f r ? J The information included on this map has been compiled by King County staff from a variety of sources and is subject to change without notice. King County makes no representations or warranties, express or implied, as to accuracy, Date: 1/22/2023 N completeness, timeliness, or rights to the use of such information. This document is not intended for use as asurvey product. King County shall not be liable for any general, special, indirect, incidental, or consequential damages including, but not limited to, lost revenues or lost profits resulting from the use or misuse of the information contained on this map. Notes: Any sale of this map or information on this map is prohibited except by written permission of King County. King County 4.0 FLOW CONTROL, LOW IMPACT DEVELOPMENT (LID) AND WATER QUALITY FACILITY ANALYSIS AND DESIGN A. Existing Site Hydrology The existing project area consists of an existing forest with some pasture. On -site soils consist of Alderwood till soils according to the NRCS soil survey. Runoff in the existing condition sheet flows to the southeast. An area summary of the predeveloped condition has been included in section 1.0. B. Developed Site Hydrology The developed site consists of 2 new single-family residences and associated driveway and landscaping. The site is currently forest with some pasture. Stormwater runoff from the proposed surfaces will be handled through a combination of dispersion and infiltration if possible. Infiltration is feasible for shallow systems with testing and/or comparison of the original soil testing during the building permit phase with site layouts determined. Infiltration is proposed to the maximum extent feasible in accordance with the septic/soils recommendations of utilizing sandy loam as determined in the field. The driveways will utilize permeable pavement. WWHM calculations have been prepared to demonstrate that up to 3,000 SF of rooftop could be dispersed and still meet the flow control standards such that a detention system would not be required. C. Performance Standards The project is located within the City of Federal Way. The project site lies within the Level 2 flow control standards. The project does not exceed the thresholds requiring a flow control facility. The project is resulting in an increase of less than 0.15 cfs in the developed condition above the existing predeveloped condition. Calculations have been completed to demonstrate that up to 3,000 SF of rooftop per lot could be dispersed and still meet the flow control standards such that a detention system would not be required. See calculations in Appendix B. As a part of the Flow Control BMPs and minimum requirement#9, the proposed project is choosing the list approach for minimum requirement#9. The BMP Requirements have been summarized below for feasibility: Full Dispersion: This BMP is infeasible due to lack of available flow path and native vegetation. Full Infiltration: This BMP is infeasible as the site does not contain outwash soils and does not meet groundwater indicator separation requirements. Limited Infiltration: This BMP is feasible and will be utilized to the maximum extentfeasible through infiltration trenches sized for 21 lineal feet oftrench per 1,000 square foot of tributary area. Bioretention: This BMP is not applicable as limited infiltration is proposed. Permeable Pavement:This BMP is feasible and will be utilized forthis project. Basic Dispersion: This BMP is feasible for portions of the development and will be utilized where infiltration is infeasible. Soil Amendment: All disturbed soils will be amended in accordance with the City of Federal Way and KCSWDM requirements. Perforated Pipe Connection: Not applicable. D. Flow Control System The proposed project will utilize a combination of infiltration and dispersion to handle runoff in accordance with the performance standards identified above. The driveways will be handled by infiltration or sheetf low dispersion. The proposed rooftops will be handled via infiltration or dispersion where infiltration is infeasible. E. Water Quality System Water quality is not required forthis project as the pollution generating impervious surface is less than 5,000 square feet. M sou Map ar Sr W54h St I. T� .t . 3V.62 r St 4M ..� 5.0 CONVEYANCE SYSTEM ANALYSIS AND DESIGN The conveyance system will be adequate lysize d during the final engineering phase. 6.0 SPECIAL REPORTS AND STUDIES Soils Report: Soils testing was completed by Westside Septic dated December 10, 2018. The report has been included in Appendix A. 7.0 OTHER PERMITS Other permits necessary forth is project include: • ROW permit 8.0 CSWPP ANALYSIS AND DESIGN The site will utilize Appendix D of the 2021 KCSWDM and the standard design details from the 2019 Stormwater Management Manual for Western Washington for the erosion and sedimentation control design. Refer tothe approved TESC plan. Below is a breakdown of how each require element is addressed: 1. Clearing Limits Clearing limits will be established in the field. Clearing limits will be clearly marked forfenced. 2. Cover Measures Disturbed areas will be covered through temporary or permanent means. Any soils unworked for more than 7 days during the dry season (May 1 to September 30) or 2 days during the wet season (October 1 to April 30) will have erosion control nets/blankets, plastic sheeting and temporary or permanent seeding. 3. Perimeter Protection Perimeter protection is proposed forthe downslope areas as shown on the approved plans. Perimeter protection shall be used in the form of silt fence. 4. Traffic Area Stabilization A temporary construction entrance is proposed atthe entryto the site. 5. Sediment Retention Sediment retention is proposed in the form of catch basin inlet protection as downstream catch basins from the subject project area. 6. Surface Water Collection Surface waterwill be intercepted bythe silt fence. Any runoff that leaves the proposed site will be intercepted in downstream storm drainage systems. 7. Dewatering Controls No dewatering is anticipated as a part of this project. 8. Dust Control Dust control will be achieved by watering any exposed soils. 9. Flow Control Additional flow control measures are not required as part of this project. 10. Control Pollutants The only anticipated potential source of pollutants associated with the projectwould be from mobile fueling of construction equipment as necessary. If necessary, mobile fueling shall be done in accordance with BMP A-48 from the 2021 King County Stormwater Pollution Prevention Manual. 11. Protect Existing and Proposed Flow Control BM Ps Thereare noexistingor proposed BMPs on or immediately downstream of the project site. The perimeter protection measures along with catch basin inlet protection will aid in the protection of any downstream storm drainage systems. 12. Maintain BMPs All BMPs will be maintained and repaired in accordance with BMP specifications. 13. Manage the Project The projectwill be managed to ensure that all applicable and installed BMPs are adequately maintained and functioning. In addition, any necessary modifications or repairsto the erosion control BMPs will be done immediatelyto avoid impact to downstream properties and storm systems. 9.0 BOND QUANTITIES, FACILITY SUMMARIES, AND DECLARATION OF COVENANT Maintenance covenants will be prepared, reviewed, and recorded priorto plan approval if required. All bond quantityforms and required bonds will be secured priorto permit issuance. 10.0 OPERATIONS AND MAINTENANCE MANUAL A separate maintenance exhibit will be prepared fore ach of the single family residences at the time of building permit if required. 11a9a►I�]I I1 � 1 ;% WESTSIDE SEPTIC DESIGN, LLC " THE SEPTIC DESIGN SPECIALIS7^ SITE EVALUATION LETTER To: MIKE BILOVO Phone: 253-350-9063 Email: Mike Bilovol mbilovol@gmail.com Date: 12-10-2018 Project Description Septic Feasibility for 3 bedroom (450 gpd) single family residence septic system meeting King County Health Standards King County Parcel # 302104-9154 (east property) and 302104-9155 (west property) Site Address: 506 SW 366TH ST, Federal Way, 98023 Acres - 0.74 acres (32,184 sq ft) and 0.83 acres (36,070 sq ft) Water — Proposed public, no water availability letter at this time Critical Areas — May impact proposed site Dear Mike, As per your request, on 12-06-18 sixteen test holes were dug over the two parcels. The soils and site conditions were evaluated in regards to an on -site septic system on the above referenced property to determine the feasibility of obtaining an approved septic design from King County Health Department. The soil log descriptions are below. As the properties are under 5 acres, King County Health requires a minimum of 18" of permeable soil above the High Winter Water Table. The site is slightly sloping downward (+/- 7') from the west portion of the property to the east portion of the property. Based upon my site observations and soil logs I believe that the east property can achieve a pre-treatment shallow pressure or shallow pressure system without having to go through a High Winter Water Review process. In my opinion, the West lot will have to go through a High Winter Water Review process prior to proceeding with a septic design. This letter is based upon the King County Health Code (Title 13) and my understanding of the requirements thereof. If you require any further information, please do not hesitate to ask. Thank you. Si�}cerely, 1 �� e th Pelzel Westside Septic Design, LLC P.O. Box 731069 Puyallup, WA 98373 253-208-9078 keith@westsideseptic.com Professional On -Site Wastewater Treatment System Designer #5100365 Excellence in Design with Communication WESTSIDE SEPTIC DESIGN, LLC. PO Box 731069, Puyallup, WA 98373 Keith Pelzel PH: 253-208-9078; Email: Keith@westsideseptic.com Brian Potucek PH: 253-732-3792; Email: Brian@westsideseptic.com Page 1 of 3 APPENDIX B WWH? PROJECT General Model Information TRUST Project Name: default[2] Site Name: Bilovil Site Address: City: Report Date: 1 /22/2023 Gage: Seatac Data Start: 1948/10/01 Data End: 2009/09/30 Timestep: 15 Minute Precip Scale: 1.000 Version Date: 2022/07/07 Version: 4.2.18 POC Thresholds Low Flow Threshold for POC1: 50 Percent of the 2 Year High Flow Threshold for POC1: 50 Year default[2] 1/22/2023 8:15:26 PM Page 2 Landuse Basin Data Predeveloped Land Use Basin 1 Bypass: No GroundWater: No Pervious Land Use acre C, Forest, Flat 0.32 Pervious Total 0.32 Impervious Land Use acre Impervious Total 0 Basin Total 0.32 default[2] 1/22/2023 8:15:26 PM Page 3 Mitigated Land Use Basin 1 Bypass: No GroundWater: No Pervious Land Use acre C, Lawn, Flat 0.13 Pervious Total 0.13 Impervious Land Use acre ROOF TOPS FLAT 0.14 Impervious Total 0.14 Basin Total 0.27 default[2] 1/22/2023 8:15:26 PM Page 4 Routing Elements Predeveloped Routing default[2] 1/22/2023 8:15:26 PM Page 5 Mitigated Routing default[2] 1/22/2023 8:15:26 PM Page 6 Analysis Results POC 1 Percent Time Exce edirig + Predeveloped Predeveloped Landuse Totals for POC #1 Total Pervious Area: 0.32 Total Impervious Area: 0 Mitigated Landuse Totals for POC #1 Total Pervious Area: 0.13 Total Impervious Area: 0.14 Cumulative Pro6a6ility ol 00 � o, O..01 0.00, �5 1 2 6 ID 20 30 b0 70 M M 96 99 49 pgs , 0 x Mitigated Flow Frequency Method: Log Pearson Type III 17B Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.009408 5 year 0.014776 10 year 0.017818 25 year 0.021041 50 year 0.023035 100 year 0.024731 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.062041 5 year 0.082258 10 year 0.096515 25 year 0.115559 50 year 0.130514 100 year 0.146144 Annual Peaks Annual Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1949 0.009 0.088 1950 0.012 0.081 1951 0.021 0.055 1952 0.007 0.040 1953 0.005 0.043 1954 0.008 0.050 1955 0.013 0.055 1956 0.010 0.055 1957 0.008 0.067 1958 0.009 0.049 default[2] 1/22/2023 8:15:26 PM Page 7 1959 0.008 0.045 1960 0.014 0.057 1961 0.008 0.056 1962 0.005 0.044 1963 0.007 0.054 1964 0.009 0.050 1965 0.006 0.071 1966 0.006 0.042 1967 0.013 0.082 1968 0.008 0.085 1969 0.008 0.064 1970 0.006 0.058 1971 0.007 0.069 1972 0.015 0.082 1973 0.007 0.037 1974 0.008 0.066 1975 0.010 0.068 1976 0.007 0.051 1977 0.001 0.048 1978 0.007 0.060 1979 0.004 0.078 1980 0.015 0.094 1981 0.006 0.063 1982 0.011 0.098 1983 0.010 0.069 1984 0.006 0.046 1985 0.004 0.064 1986 0.016 0.055 1987 0.014 0.079 1988 0.006 0.045 1989 0.004 0.056 1990 0.030 0.144 1991 0.018 0.107 1992 0.007 0.046 1993 0.007 0.037 1994 0.002 0.038 1995 0.010 0.055 1996 0.022 0.068 1997 0.018 0.064 1998 0.004 0.056 1999 0.017 0.132 2000 0.007 0.062 2001 0.001 0.060 2002 0.008 0.087 2003 0.010 0.068 2004 0.013 0.121 2005 0.009 0.056 2006 0.011 0.051 2007 0.022 0.129 2008 0.029 0.104 2009 0.014 0.069 Ranked Annual Peaks Ranked Annual Peaks for Predeveloped and Mitigated. POC #1 Rank Predeveloped Mitigated 1 0.0302 0.1440 2 0.0289 0.1319 3 0.0224 0.1295 default[2] 1/22/2023 8:15:58 PM Page 8 4 0.0220 0.1214 5 0.0207 0.1065 6 0.0184 0.1045 7 0.0182 0.0979 8 0.0173 0.0942 9 0.0163 0.0880 10 0.0154 0.0872 11 0.0146 0.0854 12 0.0144 0.0821 13 0.0142 0.0820 14 0.0140 0.0814 15 0.0132 0.0786 16 0.0129 0.0784 17 0.0128 0.0707 18 0.0115 0.0693 19 0.0112 0.0691 20 0.0111 0.0687 21 0.0105 0.0684 22 0.0103 0.0683 23 0.0103 0.0678 24 0.0102 0.0674 25 0.0101 0.0657 26 0.0094 0.0641 27 0.0094 0.0638 28 0.0092 0.0637 29 0.0089 0.0633 30 0.0083 0.0623 31 0.0081 0.0605 32 0.0080 0.0597 33 0.0080 0.0578 34 0.0080 0.0570 35 0.0079 0.0565 36 0.0078 0.0560 37 0.0076 0.0560 38 0.0075 0.0560 39 0.0073 0.0553 40 0.0073 0.0552 41 0.0070 0.0551 42 0.0070 0.0548 43 0.0069 0.0546 44 0.0068 0.0543 45 0.0065 0.0512 46 0.0065 0.0507 47 0.0064 0.0504 48 0.0064 0.0498 49 0.0062 0.0489 50 0.0061 0.0481 51 0.0058 0.0465 52 0.0057 0.0461 53 0.0053 0.0453 54 0.0049 0.0452 55 0.0042 0.0437 56 0.0040 0.0431 57 0.0037 0.0424 58 0.0037 0.0399 59 0.0025 0.0377 60 0.0013 0.0375 61 0.0009 0.0373 default[2] 1/22/2023 8:15:58 PM Page 9 default[2] 1/22/2023 8:15:58 PM Page 10 Duration Flows The Duration Matching Failed Flow(cfs) Predev Mit Percentage Pass/Fail 0.0047 17547 87694 499 Fail 0.0049 16164 84079 520 Fail 0.0051 14966 80679 539 Fail 0.0053 13851 77492 559 Fail 0.0054 12814 74454 581 Fail 0.0056 11811 71524 605 Fail 0.0058 10900 68872 631 Fail 0.0060 10119 66263 654 Fail 0.0062 9383 63717 679 Fail 0.0064 8731 61364 702 Fail 0.0066 8145 59054 725 Fail 0.0067 7593 56937 749 Fail 0.0069 7060 54819 776 Fail 0.0071 6588 52895 802 Fail 0.0073 6145 50991 829 Fail 0.0075 5777 49237 852 Fail 0.0077 5431 47462 873 Fail 0.0079 5097 45772 898 Fail 0.0080 4808 44146 918 Fail 0.0082 4522 42542 940 Fail 0.0084 4252 41131 967 Fail 0.0086 4017 39698 988 Fail 0.0088 3782 38350 1014 Fail 0.0090 3546 37110 1046 Fail 0.0091 3337 35848 1074 Fail 0.0093 3138 34607 1102 Fail 0.0095 2950 33495 1135 Fail 0.0097 2785 32383 1162 Fail 0.0099 2599 31313 1204 Fail 0.0101 2449 30287 1236 Fail 0.0103 2312 29345 1269 Fail 0.0104 2162 28383 1312 Fail 0.0106 2032 27485 1352 Fail 0.0108 1901 26586 1398 Fail 0.0110 1793 25731 1435 Fail 0.0112 1689 24875 1472 Fail 0.0114 1594 24105 1512 Fail 0.0116 1483 23271 1569 Fail 0.0117 1379 22565 1636 Fail 0.0119 1293 21902 1693 Fail 0.0121 1217 21177 1740 Fail 0.0123 1155 20503 1775 Fail 0.0125 1098 19845 1807 Fail 0.0127 1049 19241 1834 Fail 0.0129 997 18664 1872 Fail 0.0130 930 18138 1950 Fail 0.0132 883 17573 1990 Fail 0.0134 839 17030 2029 Fail 0.0136 789 16521 2093 Fail 0.0138 743 16016 2155 Fail 0.0140 713 15556 2181 Fail 0.0141 671 15152 2258 Fail 0.0143 631 14679 2326 Fail 0.0145 596 14266 2393 Fail default[2] 1/22/2023 8:15:58 PM Page 11 0.0147 566 13826 2442 Fail 0.0149 540 13473 2495 Fail 0.0151 497 13058 2627 Fail 0.0153 473 12705 2686 Fail 0.0154 435 12318 2831 Fail 0.0156 401 11978 2987 Fail 0.0158 368 11599 3151 Fail 0.0160 348 11289 3243 Fail 0.0162 323 10957 3392 Fail 0.0164 296 10673 3605 Fail 0.0166 272 10399 3823 Fail 0.0167 257 10102 3930 Fail 0.0169 235 9837 4185 Fail 0.0171 218 9578 4393 Fail 0.0173 197 9302 4721 Fail 0.0175 180 9024 5013 Fail 0.0177 158 8808 5574 Fail 0.0179 145 8577 5915 Fail 0.0180 129 8382 6497 Fail 0.0182 119 8158 6855 Fail 0.0184 109 7965 7307 Fail 0.0186 97 7749 7988 Fail 0.0188 91 7535 8280 Fail 0.0190 82 7345 8957 Fail 0.0191 76 7178 9444 Fail 0.0193 69 6990 10130 Fail 0.0195 61 6817 11175 Fail 0.0197 54 6598 12218 Fail 0.0199 48 6419 13372 Fail 0.0201 41 6228 15190 Fail 0.0203 38 6081 16002 Fail 0.0204 33 5910 17909 Fail 0.0206 27 5760 21333 Fail 0.0208 22 5595 25431 Fail 0.0210 21 5448 25942 Fail 0.0212 20 5298 26490 Fail 0.0214 19 5178 27252 Fail 0.0216 17 5046 29682 Fail 0.0217 14 4932 35228 Fail 0.0219 12 4819 40158 Fail 0.0221 9 4686 52066 Fail 0.0223 4 4556 113900 Fail 0.0225 3 4455 148500 Fail 0.0227 3 4338 144600 Fail 0.0228 3 4244 141466 Fail 0.0230 3 4128 137600 Fail The development has an increase in flow durations from 1 /2 Predeveloped 2 year flow to the 2 year flow or more than a 10% increase from the 2 year to the 50 year flow. The development has an increase in flow durations for more than 50% of the flows for the range of the duration analysis. default[2] 1/22/2023 8:15:58 PM Page 12 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. default[2] 1/22/2023 8:15:58 PM Page 13 LID Report LID Technique Used for Total Volume Volume Infiltration Cumulative Percent Waterfluality Percent Comment Treatment? Needs Through Volume Volume Volume Water Quality Treatment Facility (ac-ft) Infiltration Infiltrated Treated (ac-ft) (ac-ft) Credit Total Volume Infiltrated 0.00 0.00 0.00 0.00 0.00 0% No Treat. Credit ❑uration Compliance with LID Analysis Standard 0% of2-yrto 50% of Result = 2 yr Failed default[2] 1/22/2023 8:15:58 PM Page 14 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. default[2] 1/22/2023 8:16:29 PM Page 15 Appendix Predeveloped Schematic Basin 1 0.32ac default[2] 1/22/2023 8:16:29 PM Page 16 Mitigated Schematic E Basin 0.27ac default[2] 1/22/2023 8:16:30 PM Page 17 Predeveloped UC/ File RUN GLOBAL WWHM4 model simulation START 1948 10 01 END RUN INTERP OUTPUT LEVEL 3 0 RESUME 0 RUN 1 END GLOBAL FILES <File> <Un#> END FILES OPN SEQUENCE 2009 09 30 UNIT SYSTEM 1 <-----------File Name ------------------------------>*** *** INGRP INDELT 00:15 PERLND 10 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<---------- Title ----------- >***TRAN PIVL DIG1 FIL1 1 Basin 1 MAX 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 PYR DIG2 FIL2 YRND 1 2 30 9 <PLS ><------- Name ------- >NBLKS Unit -systems Printer *** # - # User t-series Engl Metr *** in out *** 10 C, 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 *** 10 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 ********* 10 0 0 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT -INFO default[2] 1/22/2023 8:16:32 PM Page 18 PWAT-PARM1 <PLS > PWATER variable monthly parameter value flags *** # - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT *** 10 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 10 0 4.5 0.08 400 0.05 0.5 END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 # - # ***PETMAX PETMIN INFEXP 10 0 0 2 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 # - # CEPSC UZSN NSUR 10 0.2 0.5 0.35 END PWAT-PARM4 AGWRC 0.996 *** INFILD DEEPFR BASETP AGWETP 2 0 0 0 *** INTFW IRC LZETP *** 6 0.5 0.7 PWAT-STATEI <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 10 0 0 0 0 2.5 1 END PWAT-STATEI END PERLND IMPLND GEN-INFO <PLS ><------- Name ------- > END GEN-INFO *** Section IWATER*** Unit -systems Printer *** User t-series Engl Metr *** in out *** 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-STATEI <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS END IWAT-STATEI GWVS 0 default[2] 1/22/2023 8:16:32 PM Page 19 END IMPLND SCHEMATIC <-Source-> <Name> # Basin 1*** PERLND 10 PERLND 10 ******Routing****** END SCHEMATIC <--Area--> <-Target-> MBLK <-factor-> <Name> # Tbl# 0.32 COPY 501 12 0.32 COPY 501 13 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 Al A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** END HYDR-PARMl 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 default[2] 1/22/2023 8:16:32 PM Page 20 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 default[2] 1/22/2023 8:16:32 PM Page 21 Mitigated UC/ File RUN GLOBAL WWHM4 model simulation START 1948 10 01 END RUN INTERP OUTPUT LEVEL 3 0 RESUME 0 RUN 1 END GLOBAL FILES <File> <Un#> END FILES OPN SEQUENCE 2009 09 30 UNIT SYSTEM 1 <-----------File Name ------------------------------>*** *** INGRP INDELT 00:15 PERLND 16 IMPLND 4 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INF01 # - #<---------- Title ----------- >***TRAN PIVL DIG1 FIL1 1 Basin 1 MAX END DISPLY-INF01 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 PYR DIG2 FIL2 YRND 1 2 30 9 <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 ********* 16 0 0 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT -INFO default[2] 1/22/2023 8:16:32 PM Page 22 PWAT-PARMl <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 16 0 4.5 0.03 400 0.05 0.5 END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 # - # ***PETMAX PETMIN INFEXP 16 0 0 2 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 # - # CEPSC UZSN NSUR 16 0.1 0.25 0.25 END PWAT-PARM4 AGWRC 0.996 *** INFILD DEEPFR BASETP AGWETP 2 0 0 0 *** INTFW IRC LZETP *** 6 0.5 0.25 PWAT-STATEI <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-STATEI END PERLND IMPLND GEN-INFO <PLS ><------- Name ------- > Unit -systems Printer *** # - # User t-series Engl Metr *** in out *** 4 ROOF TOPS/FLAT 1 1 1 27 0 END GEN-INFO *** Section IWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** 4 0 0 1 0 0 0 END ACTIVITY PRINT -INFO <ILS > ******** Print -flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* 4 0 0 4 0 0 4 1 9 END PRINT -INFO IWAT-PARM1 <PLS > IWATER variable monthly parameter value flags *** # - # CSNO RTOP VRS VNN RTLI *** 4 0 0 0 0 0 END IWAT-PARM1 IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC 4 400 0.01 0.1 0.1 END IWAT-PARM2 IWAT-PARM3 <PLS > IWATER input info: Part 3 *** # - # ***PETMAX PETMIN 4 0 0 default[2] 1/22/2023 8:16:32 PM Page 23 END IWAT-PARM3 IWAT-STATEI <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS 4 0 0 END IWAT-STATEI END IMPLND SCHEMATIC <-Source-> <Name> # Basin 1*** PERLND 16 PERLND 16 IMPLND 4 ******Routing****** END SCHEMATIC <--Area--> <-Target-> MBLK <-factor-> <Name> # Tbl# 0.13 COPY 501 12 0.13 COPY 501 13 0.14 COPY 501 15 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 Al A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** END HYDR-PARMl 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 default[2] 1/22/2023 8:16:32 PM Page 24 END SPEC -ACTIONS FTABLES END FTABLES EXT SOURCES <-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # *** WDM 2 PREC ENGL 1 PERLND 1 999 EXTNL PREC WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC WDM 1 EVAP ENGL 0.76 PERLND 1 999 EXTNL PETINP WDM 1 EVAP ENGL 0.76 IMPLND 1 999 EXTNL PETINP END EXT SOURCES EXT TARGETS <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd *** <Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg*** COPY 1 OUTPUT MEAN 1 1 48.4 WDM 701 FLOW ENGL REPL COPY 501 OUTPUT MEAN 1 1 48.4 WDM 801 FLOW ENGL REPL END EXT TARGETS MASS -LINK <Volume> <-Grp> <-Member-><--Mult--> <Target> <Name> <Name> # #<-factor-> <Name> MASS -LINK 12 PERLND PWATER SURO 0.083333 COPY END MASS -LINK 12 MASS -LINK 13 PERLND PWATER IFWO 0.083333 COPY END MASS -LINK 13 MASS -LINK 15 IMPLND IWATER SURO 0.083333 COPY END MASS -LINK 15 END MASS -LINK END RUN <-Grp> <-Member->*** <Name> # #*** INPUT MEAN INPUT MEAN INPUT MEAN default[2] 1/22/2023 8:16:32 PM Page 25 Predeveloped HSPF Message File default[2] 1/22/2023 8:16:32 PM Page 26 Mitigated HSPF Message File default[2] 1/22/2023 8:16:32 PM Page 27 Disclaimer Legal Notice This program and accompanying documentation is provided 'as -is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by the user. Clear Creek Solutions, Inc. disclaims 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. has been advised of the possibility of such damages. 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 default[2] 1/22/2023 8:16:32 PM Page 28