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Home My WebLink AboutNEW_RS_Preliminary TIR_Tran Short Plat_240620_v2 PRELIMINARY TECHNICAL INFORMATION REPORT ______________________________________________________________ Tran Short Plat 16654 113th Avenue SE Renton, WA 98055 Prepared For: Sang Tran 16654 113th Avenue SE Renton, WA 98055 4/8/24 Revised: April 8, 2024 Revised: October 22, 2023 Date: January 5, 2023 ______________________________________________________________ P.O. Box 121, Sumner, WA 98390 (206) 450-5096 www.tebaldiengineering.com 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 Control System E. Water Quality System 5.0 CONVEYANCE SYSTEM ANALYSIS AND DESIGN 6.0 SPECIAL REPORTS AND STUDIES 7.0 OTHER PERMITS 8.0 CSWPP ANALYSIS AND DESIGN 9.0 BOND QUANTITIES, FACILITY SUMMARIES, AND DECLARATION OF COVENANT 10.0 OPERATIONS AND MAINTENANCE MANUAL Appendix A - Geotechnical Engineering Report prepared by the Migizi Group dated March 31, 2020 Appendix B - WWHM Calculations 1.0 PROJECT OVERVIEW The project is located in the City of Renton at 16654 113th Avenue SE, Renton, WA on tax parcel number 0088000930. More specifically, the project is located in Section 29, Township 23 North, Range 5 East, Willamette Meridian, King County, Washington. The project proposes subdivide the existing parcels into 3 total lots. An area table has been provided below in this section. The 0.47-acre property is bound by single-family residences to the north and east, 113th Avenue SE to the west and SE 168th Street to the south. The existing topography varies from approximately 0 to 10 percent and the site generally falls from north to south. The vegetation on the project site consists of existing landscaping and pasture area. In the existing condition, runoff from the project area sheet flows to the south to the existing storm system in SE 168th Street. Runoff in the developed condition will be collected and routed through an on-site detention system prior to the downstream storm drainage system. There are no known critical areas on the subject property. Area Summary Pre-Developed Developed Parcel Area 20,412 SF 20,412 SF Project Area (clearing limits) - 24,300 SF Existing Buildings 1,724 SF - Existing Driveway/Walk 645 SF - New Pervious - 11,639 SF Proposed Drive/Walk (PGIS) – Onsite ** - 1,200 SF Proposed Access Easement (PGIS) - Onsite - 2,070 SF Proposed Roof* - 6,000 SF Offsite Sidewalk - 2,288 SF Offsite Pavement - 379 SF Total Impervious - 9,130 SF *Total between the 3 new lots. **Assumes 400 square feet of driveway per lot. KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 1 PROJECT OWNER AND PROJECT ENGINEER Part 2 PROJECT LOCATION AND DESCRIPTION Project Owner ___________________________ Phone _________________________________ Address _______________________________ _______________________________________ Project Engineer _________________________ Company ______________________________ Phone _________________________________ Project Name _________________________ DPER Permit # ________________________ Location Township ______________ Range ________________ Section ________________ Site Address __________________________ _____________________________________ Part 3 TYPE OF PERMIT APPLICATION Part 4 OTHER REVIEWS AND PERMITS  Landuse (e.g.,Subdivision / Short Subd. / UPD)  Building (e.g.,M/F / Commercial / SFR)  Clearing and Grading  Right-of-Way Use  Other _______________________  DFW HPA  COE 404  DOE Dam Safety  FEMA Floodplain  COE Wetlands  Other ________  Shoreline Management  Structural Rockery/Vault/_____  ESA Section 7 Part 5 PLAN AND REPORT INFORMATION Technical Information Report Site Improvement Plan (Engr. Plans) Type of Drainage Review (check one): Date (include revision dates): Date of Final:  Full  Targeted  Simplified  Large Project  Directed ____________________________________ __________________ Plan Type (check one): Date (include revision dates): Date of Final:  Full  Modified  Simplified ____________________________________ __________________ 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 Sang Tran 16654 113th Avenue SE Renton, WA 98055 Chris Tebaldi, P.E. 206-450-5096 Tran Short Plat 10/22/2023 10/22/2023 Tebaldi Engineering, LLC 16654 113th Avenue SE Renton, WA 98055 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 _______________________________ _______________________________  Steep Slope __________________________  Erosion Hazard _______________________  Landslide Hazard ______________________  Coal Mine Hazard ______________________  Seismic Hazard _______________________  Habitat Protection ______________________  _____________________________________ Part 10 SOILS Soil Type _________________ _________________ _________________ _________________ Slopes _________________ _________________ _________________ _________________ Erosion Potential _________________ _________________ _________________ _________________  High Groundwater Table (within 5 feet)  Other ________________________________  Sole Source Aquifer  Seeps/Springs  Additional Sheets Attached 2016 Surface Water Design Manual 4/24/2016 2 ALDERWOOD 0-6% KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 11 DRAINAGE DESIGN LIMITATIONS REFERENCE  Core 2 – Offsite Analysis_________________  Sensitive/Critical Areas__________________  SEPA________________________________  LID Infeasibility________________________  Other________________________________  _____________________________________ LIMITATION / SITE CONSTRAINT _______________________________________ _______________________________________ _______________________________________ _______________________________________ _______________________________________ _______________________________________  Additional Sheets Attached Part 12 TIR SUMMARY SHEET (provide one TIR Summary Sheet per Threshold Discharge Area) Threshold Discharge Area: (name or description) Core Requirements (all 8 apply): Discharge at Natural Location Number of Natural Discharge Locations: Offsite Analysis Level: 1 / 2 / 3 dated:__________________ Flow Control (include facility summary sheet) Level: 1 / 2 / 3 or Exemption Number ____________ Flow Control BMPs _______________________________ Conveyance System Spill containment located at: _________________________ Erosion and Sediment Control / Construction Stormwater Pollution Prevention CSWPP/CESCL/ESC Site Supervisor: _____________________ Contact Phone: _________________________ After Hours Phone: _________________________ Maintenance and Operation Responsibility (circle one): Private / Public If Private, Maintenance Log Required: Yes / No Financial Guarantees and Liability Provided: Yes / No Water Quality (include facility summary sheet) Type (circle one): Basic / Sens. Lake / Enhanced Basic / Bog or Exemption No. ______________________ Landscape Management Plan: Yes / No Special Requirements (as applicable): Area Specific Drainage Requirements Type: CDA / SDO / MDP / BP / LMP / Shared Fac. / None Name: ________________________ Floodplain/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 Tran 1 Detention Vault Catch basin Not applicable (<5,000 SF) 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 (commercial / industrial land use) Describe 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 DURING CONSTRUCTION  Clearing Limits  Cover Measures  Perimeter Protection  Traffic Area Stabilization  Sediment Retention  Surface Water Collection  Dewatering Control  Dust Control  Flow Control  Protection of Flow Control BMP Facilities (existing and proposed)  Maintain BMPs / Manage Project MINIMUM ESC REQUIREMENTS AFTER CONSTRUCTION  Stabilize exposed surfaces  Remove and restore Temporary ESC Facilities  Clean and remove all silt and debris, ensure operation of Permanent Facilities, restore operation of Flow Control BMP Facilities as necessary  Flag limits of SAO and open space preservation areas  Other ______________________ 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 4 X Detention Vault KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 15 EASEMENTS/TRACTS Part 16 STRUCTURAL ANALYSIS  Drainage Easement  Covenant  Native Growth Protection Covenant  Tract  Other ___________________________  Cast in Place Vault  Retaining Wall  Rockery > 4’ High  Structural on Steep Slope  Other ______________________________ Part 17 SIGNATURE OF PROFESSIONAL ENGINEER 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. Signed/Date 2016 Surface Water Design Manual 4/24/2016 5 10/22/2023 X 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 south to the existing storm drainage system in SE 168th Street. Runoff in the developed condition will be connected to the existing storm system or infiltrated. 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 will be met through the use of a detention system in accordance with the 2022 City of Renton Surface Water Design Manual. See section 4.0. Core Requirement No. 4: Conveyance System. Response: The proposed conveyance system has been designed to convey the 100-year design storm. Please refer to Section 5.0 for calculations. Core Requirement No. 5: Construction Stormwater Pollution Prevention. Response: Temporary erosion control measures for this 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 2022 City of Renton Surface Water Design Manual. Core Requirement No. 7: Financial Guarantees and Liability. Response: No financial guarantees are anticipated as a part 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 floodplain or floodway. 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 An off-site and downstream analysis was performed by Casey Lowe with the Migizi Group in 2020. From the site, stormwater runoff sheetflows south and immediately enters the City of Renton storm system through a type 1 catch basin. Runover travels west to a local low point approximately 450 feet west of the site. Runoff then flows south into a large wetland complex that feeds Soos Creek. Runoff travels through this wetland approximately 2,500 feet and then enters Soos Creek at the south end of the wetland. Runoff travels in the creek over 1 mile to the southeast. Migizi Group was unable to follow the flow path on the ground after 450 feet where it enters the wetland onto private property. It is not anticipated that the additional follow from the subject property will create or exacerbate any flooding or erosion risks. During the off-site analysis, there were no potential problems found. The analysis includes the following: - Capacity Problems: All runoff will be directed connected or infiltrated through permeable pavement for each lot at the time of building permits. NO capacity problems exist due to the large amount open space. - Flooding: The site does not have a history of flooding and is mapped outside of the 100 year floodplain. - Upland Erosion/Landslide Hazards: The site is relatively level with low erosion risk. - Channel Erosion/Outfall Location: No issues noted. - Violations of surface water quality standards: None identified. - No drainage systems were noted nearby other than roadside ditches. No known capacity or other problems exist at this time. - There are no stream inlets or outlets in the project area. - No groundwater was encountered during explorations. The development will not affect groundwater levels in the area. See Downstream Map in this section. 9,0281505 Downstream Drainage Map This map is a user generated static output from an Internet mapping site and is for reference only. Data layers that appear on this map may or may not be accurate, current, or otherwise reliable. THIS MAP IS NOT TO BE USED FOR NAVIGATIONWGS_1984_Web_Mercator_Auxiliary_Sphere Notes None 01/25/2023 Legend 1023 0 512 1023Feet Information Technology - GIS RentonMapSupport@Rentonwa.gov City and County Labels Parcels City and County Boundary <all other values> Renton 5' Primary 5' Intermediate Water Gravity Pipe Water Main Water Main - Other System Pump Station Discharge Point Surface Water Main Culvert Open Drains Facility Outline Private Pump Station Private Discharge Point Private Pipe Private Culvert Private Open Drains Private Facility Outline Facility Transfer Lift Station Wastewater Pressurized Main Renton Private Wastewater Gravity Main Renton Private KC Pressurized Main KC Gravity Main SITE 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 residence along with the associated driveway, landscaping and trees. On-site soils consist of glacial till according to the Geotechnical Engineering Report. Runoff in the existing condition sheet flows to the south. An area summary of the predeveloped condition has been included in section 1.0. B. Developed Site Hydrology The developed site consists of 3 new single-family residences and associated driveway and landscaping. The proposed project will propose to limit the on-site impervious to each lot to 2,000 square feet of rooftop and 400 square feet of driveway to minimize the size of the proposed detention facility. The runoff from the proposed driveways, access, rooftops and a portion of the proposed and existing roadway will be routed to the proposed detention facility located in the southern portion of the property. WWHM models show that the project complies with minimum requirement #3 with the use of the detention facility. C. Performance Standards The project is located within the City of Renton. The project site lies within the Level 2 flow control standards. The project exceeds the thresholds requiring a flow control facility. The project increases the runoff from the project by more than 0.15 cfs in the developed condition above the existing predeveloped (forested) condition. In verifying whether or not flow control facilities are required, the project must model and mitigate for the following target surfaces: - New impervious surfaces - New pervious surfaces - Existing impervious surfaces - Replaced impervious surfaces All pervious and impervious surfaces have been included as target impervious surfaces for modeling purposes. As a part of the proposed development, frontage sidewalks are required to the west and south. The southern proposed sidewalk along SE 168th is at an elevation that is not feasible to route to the proposed detention vault. As allowed as a part of Core Requirement #3, the proposed project will collect a portion of the existing pavement in 113th Avenue SE that is greater than the proposed sidewalk area that is not being detained. The existing pavement along with the new widening on 113th Avenue SE flows to a proposed catch basin in the NE corner of the intersection. The collection and detention of the additional existing pavement will provide more detention than is required for the proposed project. See WWHM 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 infeasible as the site does not meet groundwater indicator separation requirements. Bioretention: This BMP is infeasible as the site does not meet groundwater indicator separation requirements. Permeable Pavement: This BMP is infeasible as the site does not meet groundwater indicator separation requirements. Basic Dispersion: This BMP is infeasible as there is not adequate flowpath on the subject property after development. Soil Amendment: All disturbed soils will be amended in accordance with the 2022 City of Renton Surface Water Design Manual. Perforated Pipe Connection: Not applicable. D. Flow Control System The proposed project will utilize a detention facility to handle runoff in accordance with the performance standards identified above. The driveways will be handled by collecting runoff and routing to the detention facility. The proposed rooftops will be routed to the detention facility. E. Water Quality System Water quality is not required for this project as the pollution generating impervious surface is less than 5,000 square feet. Soil Map—King County Area, Washington Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 1/25/2023 Page 1 of 3 52 5 5 7 6 4 52 5 5 7 7 3 52 5 5 7 8 2 52 5 5 7 9 1 52 5 5 8 0 0 52 5 5 8 0 9 52 5 5 8 1 8 52 5 5 7 6 4 52 5 5 7 7 3 52 5 5 7 8 2 52 5 5 7 9 1 52 5 5 8 0 0 52 5 5 8 0 9 52 5 5 8 1 8 561066 561075 561084 561093 561102 561111 561120 561129 561138 561147 561066 561075 561084 561093 561102 561111 561120 561129 561138 561147 47° 27' 10'' N 12 2 ° 1 1 ' 2 3 ' ' W 47° 27' 10'' N 12 2 ° 1 1 ' 1 9 ' ' W 47° 27' 8'' N 12 2 ° 1 1 ' 2 3 ' ' W 47° 27' 8'' N 12 2 ° 1 1 ' 1 9 ' ' W N Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 10N WGS84 0 15 30 60 90 Feet 0 5 10 20 30 Meters Map Scale: 1:405 if printed on A landscape (11" x 8.5") sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: King County Area, Washington Survey Area Data: Version 18, Sep 8, 2022 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jul 31, 2022—Aug 8, 2022 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Soil Map—King County Area, Washington Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 1/25/2023 Page 2 of 3 Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI AgC Alderwood gravelly sandy loam, 8 to 15 percent slopes 0.6 100.0% Totals for Area of Interest 0.6 100.0% Soil Map—King County Area, Washington Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 1/25/2023 Page 3 of 3 5.0 CONVEYANCE SYSTEM ANALYSIS AND DESIGN The conveyance system will be adequately sized during the final engineering phase. 6.0 SPECIAL REPORTS AND STUDIES Soils Report: Geotechnical Engineering Report was completed by the Migizi Group dated March 31, 2020. The report has been included in Appendix A. 7.0 OTHER PERMITS Other permits necessary for this 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 to the 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 for fenced. 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 for the 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 at the entry to 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 water will be intercepted by the 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 a part of this project. 10. Control Pollutants The only anticipated potential source of pollutants associated with the project would 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 BMPs There are no existing or 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 project will be managed to ensure that all applicable and installed BMPs are adequately maintained and functioning. In addition, any necessary modifications or repairs to the erosion control BMPs will be done immediately to 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 prior to plan approval if required. All bond quantity forms and required bonds will be secured prior to permit issuance. 10.0 OPERATIONS AND MAINTENANCE MANUAL A separate operations and maintenance manual will be provided during the final engineering phase. APPENDIX A APPENDIX B WWHM2012 PROJECT REPORT T-UPDATE 4/8/2024 1:46:14 PM Page 2 General Model Information WWHM2012 Project Name:T-UPDATE Site Name:Tran Site Address: City: Report Date:4/8/2024 Gage:Seatac Data Start:1948/10/01 Data End:2009/09/30 Timestep:15 Minute Precip Scale:1.000 Version Date:2023/03/31 Version:4.2.19 POC Thresholds Low Flow Threshold for POC1:50 Percent of the 2 Year High Flow Threshold for POC1:50 Year T-UPDATE 4/8/2024 1:46:14 PM Page 3 Landuse Basin Data Predeveloped Land Use PRE Bypass:No GroundWater:No Pervious Land Use acre C, Forest, Flat 0.53 Pervious Total 0.53 Impervious Land Use acre Impervious Total 0 Basin Total 0.53 T-UPDATE 4/8/2024 1:46:14 PM Page 4 Mitigated Land Use D1 Bypass:No GroundWater:No Pervious Land Use acre C, Lawn, Flat 0.263 Pervious Total 0.263 Impervious Land Use acre ROOF TOPS FLAT 0.138 DRIVEWAYS FLAT 0.075 SIDEWALKS FLAT 0.022 Impervious Total 0.235 Basin Total 0.498 T-UPDATE 4/8/2024 1:46:14 PM Page 5 D3-TRADE Bypass:No GroundWater:No Pervious Land Use acre Pervious Total 0 Impervious Land Use acre ROADS FLAT 0.032 Impervious Total 0.032 Basin Total 0.032 T-UPDATE 4/8/2024 1:46:14 PM Page 6 Routing Elements Predeveloped Routing T-UPDATE 4/8/2024 1:46:14 PM Page 7 Mitigated Routing Vault 1 Width:39 ft. Length:38 ft. Depth:6 ft. Discharge Structure Riser Height:5 ft. Riser Diameter:18 in. Orifice 1 Diameter:0.406 in.Elevation:0 ft. Orifice 2 Diameter:0.875 in.Elevation:3.265 ft. Orifice 3 Diameter:0.500 in.Elevation:4.3 ft. Element Flows To: Outlet 1 Outlet 2 Vault Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)Infilt(cfs) 0.0000 0.034 0.000 0.000 0.000 0.0667 0.034 0.002 0.001 0.000 0.1333 0.034 0.004 0.001 0.000 0.2000 0.034 0.006 0.002 0.000 0.2667 0.034 0.009 0.002 0.000 0.3333 0.034 0.011 0.002 0.000 0.4000 0.034 0.013 0.002 0.000 0.4667 0.034 0.015 0.003 0.000 0.5333 0.034 0.018 0.003 0.000 0.6000 0.034 0.020 0.003 0.000 0.6667 0.034 0.022 0.003 0.000 0.7333 0.034 0.024 0.003 0.000 0.8000 0.034 0.027 0.004 0.000 0.8667 0.034 0.029 0.004 0.000 0.9333 0.034 0.031 0.004 0.000 1.0000 0.034 0.034 0.004 0.000 1.0667 0.034 0.036 0.004 0.000 1.1333 0.034 0.038 0.004 0.000 1.2000 0.034 0.040 0.004 0.000 1.2667 0.034 0.043 0.005 0.000 1.3333 0.034 0.045 0.005 0.000 1.4000 0.034 0.047 0.005 0.000 1.4667 0.034 0.049 0.005 0.000 1.5333 0.034 0.052 0.005 0.000 1.6000 0.034 0.054 0.005 0.000 1.6667 0.034 0.056 0.005 0.000 1.7333 0.034 0.059 0.005 0.000 1.8000 0.034 0.061 0.006 0.000 1.8667 0.034 0.063 0.006 0.000 1.9333 0.034 0.065 0.006 0.000 2.0000 0.034 0.068 0.006 0.000 2.0667 0.034 0.070 0.006 0.000 2.1333 0.034 0.072 0.006 0.000 2.2000 0.034 0.074 0.006 0.000 2.2667 0.034 0.077 0.006 0.000 2.3333 0.034 0.079 0.006 0.000 2.4000 0.034 0.081 0.006 0.000 2.4667 0.034 0.083 0.007 0.000 T-UPDATE 4/8/2024 1:46:14 PM Page 8 2.5333 0.034 0.086 0.007 0.000 2.6000 0.034 0.088 0.007 0.000 2.6667 0.034 0.090 0.007 0.000 2.7333 0.034 0.093 0.007 0.000 2.8000 0.034 0.095 0.007 0.000 2.8667 0.034 0.097 0.007 0.000 2.9333 0.034 0.099 0.007 0.000 3.0000 0.034 0.102 0.007 0.000 3.0667 0.034 0.104 0.007 0.000 3.1333 0.034 0.106 0.007 0.000 3.2000 0.034 0.108 0.008 0.000 3.2667 0.034 0.111 0.008 0.000 3.3333 0.034 0.113 0.013 0.000 3.4000 0.034 0.115 0.015 0.000 3.4667 0.034 0.117 0.017 0.000 3.5333 0.034 0.120 0.019 0.000 3.6000 0.034 0.122 0.020 0.000 3.6667 0.034 0.124 0.021 0.000 3.7333 0.034 0.127 0.022 0.000 3.8000 0.034 0.129 0.023 0.000 3.8667 0.034 0.131 0.024 0.000 3.9333 0.034 0.133 0.025 0.000 4.0000 0.034 0.136 0.026 0.000 4.0667 0.034 0.138 0.027 0.000 4.1333 0.034 0.140 0.028 0.000 4.2000 0.034 0.142 0.029 0.000 4.2667 0.034 0.145 0.030 0.000 4.3333 0.034 0.147 0.032 0.000 4.4000 0.034 0.149 0.033 0.000 4.4667 0.034 0.152 0.035 0.000 4.5333 0.034 0.154 0.036 0.000 4.6000 0.034 0.156 0.037 0.000 4.6667 0.034 0.158 0.038 0.000 4.7333 0.034 0.161 0.039 0.000 4.8000 0.034 0.163 0.040 0.000 4.8667 0.034 0.165 0.041 0.000 4.9333 0.034 0.167 0.042 0.000 5.0000 0.034 0.170 0.043 0.000 5.0667 0.034 0.172 0.317 0.000 5.1333 0.034 0.174 0.816 0.000 5.2000 0.034 0.176 1.450 0.000 5.2667 0.034 0.179 2.170 0.000 5.3333 0.034 0.181 2.929 0.000 5.4000 0.034 0.183 3.680 0.000 5.4667 0.034 0.186 4.374 0.000 5.5333 0.034 0.188 4.973 0.000 5.6000 0.034 0.190 5.451 0.000 5.6667 0.034 0.192 5.805 0.000 5.7333 0.034 0.195 6.065 0.000 5.8000 0.034 0.197 6.390 0.000 5.8667 0.034 0.199 6.650 0.000 5.9333 0.034 0.201 6.899 0.000 6.0000 0.034 0.204 7.140 0.000 6.0667 0.034 0.206 7.373 0.000 6.1333 0.000 0.000 7.599 0.000 T-UPDATE 4/8/2024 1:46:14 PM Page 9 Analysis Results POC 1 + Predeveloped x Mitigated Predeveloped Landuse Totals for POC #1 Total Pervious Area:0.53 Total Impervious Area:0 Mitigated Landuse Totals for POC #1 Total Pervious Area:0.263 Total Impervious Area:0.267 Flow Frequency Method:Log Pearson Type III 17B Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.015582 5 year 0.024473 10 year 0.029511 25 year 0.034849 50 year 0.038152 100 year 0.040961 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.008769 5 year 0.014561 10 year 0.019625 25 year 0.027694 50 year 0.035106 100 year 0.043891 Annual Peaks Annual Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1949 0.015 0.006 1950 0.019 0.008 1951 0.034 0.028 1952 0.011 0.006 1953 0.009 0.007 1954 0.013 0.007 1955 0.021 0.007 1956 0.017 0.017 1957 0.014 0.007 1958 0.015 0.007 T-UPDATE 4/8/2024 1:46:39 PM Page 10 1959 0.013 0.006 1960 0.023 0.022 1961 0.013 0.008 1962 0.008 0.006 1963 0.011 0.007 1964 0.015 0.007 1965 0.011 0.012 1966 0.010 0.007 1967 0.021 0.008 1968 0.013 0.007 1969 0.013 0.007 1970 0.011 0.007 1971 0.011 0.007 1972 0.026 0.025 1973 0.012 0.014 1974 0.013 0.007 1975 0.017 0.006 1976 0.012 0.007 1977 0.001 0.005 1978 0.011 0.007 1979 0.007 0.005 1980 0.024 0.025 1981 0.010 0.007 1982 0.019 0.014 1983 0.017 0.007 1984 0.010 0.006 1985 0.006 0.006 1986 0.027 0.008 1987 0.024 0.017 1988 0.009 0.006 1989 0.006 0.006 1990 0.050 0.023 1991 0.030 0.019 1992 0.012 0.008 1993 0.012 0.006 1994 0.004 0.005 1995 0.017 0.008 1996 0.037 0.028 1997 0.031 0.027 1998 0.007 0.006 1999 0.029 0.021 2000 0.012 0.007 2001 0.002 0.004 2002 0.013 0.008 2003 0.017 0.007 2004 0.022 0.024 2005 0.016 0.007 2006 0.018 0.016 2007 0.037 0.034 2008 0.048 0.025 2009 0.023 0.008 Ranked Annual Peaks Ranked Annual Peaks for Predeveloped and Mitigated. POC #1 Rank Predeveloped Mitigated 1 0.0500 0.0339 2 0.0478 0.0280 3 0.0371 0.0275 T-UPDATE 4/8/2024 1:46:39 PM Page 11 4 0.0365 0.0267 5 0.0343 0.0250 6 0.0305 0.0249 7 0.0301 0.0248 8 0.0286 0.0235 9 0.0270 0.0234 10 0.0256 0.0218 11 0.0242 0.0209 12 0.0239 0.0192 13 0.0235 0.0174 14 0.0232 0.0169 15 0.0218 0.0162 16 0.0214 0.0143 17 0.0212 0.0137 18 0.0191 0.0118 19 0.0186 0.0081 20 0.0184 0.0080 21 0.0173 0.0078 22 0.0171 0.0078 23 0.0170 0.0077 24 0.0168 0.0077 25 0.0167 0.0077 26 0.0156 0.0075 27 0.0155 0.0075 28 0.0153 0.0075 29 0.0147 0.0073 30 0.0138 0.0072 31 0.0134 0.0072 32 0.0133 0.0072 33 0.0132 0.0072 34 0.0132 0.0072 35 0.0131 0.0071 36 0.0129 0.0071 37 0.0126 0.0070 38 0.0123 0.0069 39 0.0121 0.0069 40 0.0120 0.0068 41 0.0116 0.0068 42 0.0116 0.0068 43 0.0114 0.0068 44 0.0112 0.0068 45 0.0108 0.0066 46 0.0108 0.0065 47 0.0107 0.0063 48 0.0105 0.0063 49 0.0103 0.0063 50 0.0101 0.0061 51 0.0097 0.0058 52 0.0094 0.0057 53 0.0087 0.0057 54 0.0081 0.0056 55 0.0069 0.0056 56 0.0065 0.0056 57 0.0062 0.0055 58 0.0061 0.0052 59 0.0041 0.0051 60 0.0022 0.0049 61 0.0015 0.0043 T-UPDATE 4/8/2024 1:46:39 PM Page 12 T-UPDATE 4/8/2024 1:46:39 PM Page 13 Duration Flows The Facility PASSED Flow(cfs)Predev Mit Percentage Pass/Fail 0.0078 17547 8656 49 Pass 0.0081 16164 5499 34 Pass 0.0084 14964 5029 33 Pass 0.0087 13849 4504 32 Pass 0.0090 12814 4042 31 Pass 0.0093 11809 3923 33 Pass 0.0096 10898 3792 34 Pass 0.0099 10119 3677 36 Pass 0.0102 9394 3568 37 Pass 0.0106 8731 3482 39 Pass 0.0109 8162 3401 41 Pass 0.0112 7602 3326 43 Pass 0.0115 7060 3255 46 Pass 0.0118 6594 3174 48 Pass 0.0121 6151 3093 50 Pass 0.0124 5777 3020 52 Pass 0.0127 5437 2967 54 Pass 0.0130 5103 2905 56 Pass 0.0133 4808 2853 59 Pass 0.0136 4530 2806 61 Pass 0.0139 4254 2714 63 Pass 0.0142 4017 2633 65 Pass 0.0145 3790 2554 67 Pass 0.0148 3551 2473 69 Pass 0.0152 3337 2389 71 Pass 0.0155 3138 2310 73 Pass 0.0158 2954 2239 75 Pass 0.0161 2785 2162 77 Pass 0.0164 2601 2075 79 Pass 0.0167 2449 1995 81 Pass 0.0170 2304 1909 82 Pass 0.0173 2162 1837 84 Pass 0.0176 2027 1767 87 Pass 0.0179 1898 1671 88 Pass 0.0182 1790 1607 89 Pass 0.0185 1689 1539 91 Pass 0.0188 1585 1467 92 Pass 0.0191 1483 1401 94 Pass 0.0194 1381 1328 96 Pass 0.0198 1292 1270 98 Pass 0.0201 1222 1187 97 Pass 0.0204 1155 1138 98 Pass 0.0207 1098 1082 98 Pass 0.0210 1049 1010 96 Pass 0.0213 997 969 97 Pass 0.0216 930 920 98 Pass 0.0219 884 869 98 Pass 0.0222 838 829 98 Pass 0.0225 789 789 100 Pass 0.0228 743 733 98 Pass 0.0231 713 668 93 Pass 0.0234 668 568 85 Pass 0.0237 633 506 79 Pass T-UPDATE 4/8/2024 1:46:39 PM Page 14 0.0240 596 438 73 Pass 0.0244 565 390 69 Pass 0.0247 539 330 61 Pass 0.0250 497 282 56 Pass 0.0253 473 262 55 Pass 0.0256 435 240 55 Pass 0.0259 400 222 55 Pass 0.0262 366 207 56 Pass 0.0265 348 186 53 Pass 0.0268 323 167 51 Pass 0.0271 296 153 51 Pass 0.0274 273 137 50 Pass 0.0277 256 120 46 Pass 0.0280 235 103 43 Pass 0.0283 217 94 43 Pass 0.0286 195 87 44 Pass 0.0290 180 79 43 Pass 0.0293 158 67 42 Pass 0.0296 145 61 42 Pass 0.0299 129 54 41 Pass 0.0302 119 50 42 Pass 0.0305 109 48 44 Pass 0.0308 97 45 46 Pass 0.0311 91 42 46 Pass 0.0314 82 41 50 Pass 0.0317 76 39 51 Pass 0.0320 69 37 53 Pass 0.0323 61 35 57 Pass 0.0326 54 32 59 Pass 0.0329 48 29 60 Pass 0.0332 41 20 48 Pass 0.0336 38 13 34 Pass 0.0339 33 6 18 Pass 0.0342 27 0 0 Pass 0.0345 22 0 0 Pass 0.0348 21 0 0 Pass 0.0351 20 0 0 Pass 0.0354 19 0 0 Pass 0.0357 17 0 0 Pass 0.0360 14 0 0 Pass 0.0363 12 0 0 Pass 0.0366 9 0 0 Pass 0.0369 4 0 0 Pass 0.0372 3 0 0 Pass 0.0375 3 0 0 Pass 0.0378 3 0 0 Pass 0.0382 3 0 0 Pass T-UPDATE 4/8/2024 1:46:39 PM Page 15 Water Quality Water Quality BMP Flow and Volume for POC #1 On-line facility volume:0 acre-feet On-line facility target flow:0 cfs. Adjusted for 15 min:0 cfs. Off-line facility target flow:0 cfs. Adjusted for 15 min:0 cfs. T-UPDATE 4/8/2024 1:46:39 PM Page 16 LID Report T-UPDATE 4/8/2024 1:46:47 PM Page 17 Model Default Modifications Total of 0 changes have been made. PERLND Changes No PERLND changes have been made. IMPLND Changes No IMPLND changes have been made. T-UPDATE 4/8/2024 1:46:47 PM Page 18 Appendix Predeveloped Schematic T-UPDATE 4/8/2024 1:46:48 PM Page 19 Mitigated Schematic T-UPDATE 4/8/2024 1:46:48 PM Page 20 Predeveloped UCI File RUN GLOBAL WWHM4 model simulation START 1948 10 01 END 2009 09 30 RUN INTERP OUTPUT LEVEL 3 0 RESUME 0 RUN 1 UNIT SYSTEM 1 END GLOBAL FILES <File> <Un#> <-----------File Name------------------------------>*** <-ID-> *** WDM 26 T-UPDATE.wdm MESSU 25 PreT-UPDATE.MES 27 PreT-UPDATE.L61 28 PreT-UPDATE.L62 30 POCT-UPDATE1.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 PERLND 10 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 PRE 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 *** 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 T-UPDATE 4/8/2024 1:46:48 PM Page 21 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 AGWRC 10 0 4.5 0.08 400 0.05 0.5 0.996 END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 *** # - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP 10 0 0 2 2 0 0 0 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 *** # - # CEPSC UZSN NSUR INTFW IRC LZETP *** 10 0.2 0.5 0.35 6 0.5 0.7 END PWAT-PARM4 PWAT-STATE1 <PLS > *** Initial conditions at start of simulation ran from 1990 to end of 1992 (pat 1-11-95) RUN 21 *** # - # *** CEPS SURS UZS IFWS LZS AGWS GWVS 10 0 0 0 0 2.5 1 0 END PWAT-STATE1 END PERLND IMPLND GEN-INFO <PLS ><-------Name-------> Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** END GEN-INFO *** Section IWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** END ACTIVITY PRINT-INFO <ILS > ******** Print-flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* END PRINT-INFO IWAT-PARM1 <PLS > IWATER variable monthly parameter value flags *** # - # CSNO RTOP VRS VNN RTLI *** END IWAT-PARM1 IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC END IWAT-PARM2 IWAT-PARM3 <PLS > IWATER input info: Part 3 *** # - # ***PETMAX PETMIN END IWAT-PARM3 IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS END IWAT-STATE1 T-UPDATE 4/8/2024 1:46:48 PM Page 22 END IMPLND SCHEMATIC <-Source-> <--Area--> <-Target-> MBLK *** <Name> # <-factor-> <Name> # Tbl# *** PRE*** PERLND 10 0.53 COPY 501 12 PERLND 10 0.53 COPY 501 13 ******Routing****** END SCHEMATIC NETWORK <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** COPY 501 OUTPUT MEAN 1 1 48.4 DISPLY 1 INPUT TIMSER 1 <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** END NETWORK RCHRES GEN-INFO RCHRES Name Nexits Unit Systems Printer *** # - #<------------------><---> User T-series Engl Metr LKFG *** in out *** END GEN-INFO *** Section RCHRES*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG *** END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ******************* PIVL PYR # - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR ********* END PRINT-INFO HYDR-PARM1 RCHRES Flags for each HYDR Section *** # - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** END HYDR-PARM1 HYDR-PARM2 # - # FTABNO LEN DELTH STCOR KS DB50 *** <------><--------><--------><--------><--------><--------><--------> *** END HYDR-PARM2 HYDR-INIT RCHRES Initial conditions for each HYDR section *** # - # *** VOL Initial value of COLIND Initial value of OUTDGT *** ac-ft for each possible exit for each possible exit <------><--------> <---><---><---><---><---> *** <---><---><---><---><---> END HYDR-INIT END RCHRES SPEC-ACTIONS END SPEC-ACTIONS FTABLES END FTABLES EXT SOURCES <-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # *** WDM 2 PREC ENGL 1 PERLND 1 999 EXTNL PREC WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC T-UPDATE 4/8/2024 1:46:48 PM Page 23 WDM 1 EVAP ENGL 0.76 PERLND 1 999 EXTNL PETINP WDM 1 EVAP ENGL 0.76 IMPLND 1 999 EXTNL PETINP END EXT SOURCES EXT TARGETS <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd *** <Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg*** COPY 501 OUTPUT MEAN 1 1 48.4 WDM 501 FLOW ENGL REPL END EXT TARGETS MASS-LINK <Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->*** <Name> <Name> # #<-factor-> <Name> <Name> # #*** MASS-LINK 12 PERLND PWATER SURO 0.083333 COPY INPUT MEAN END MASS-LINK 12 MASS-LINK 13 PERLND PWATER IFWO 0.083333 COPY INPUT MEAN END MASS-LINK 13 END MASS-LINK END RUN T-UPDATE 4/8/2024 1:46:48 PM Page 24 Mitigated UCI File RUN GLOBAL WWHM4 model simulation START 1948 10 01 END 2009 09 30 RUN INTERP OUTPUT LEVEL 3 0 RESUME 0 RUN 1 UNIT SYSTEM 1 END GLOBAL FILES <File> <Un#> <-----------File Name------------------------------>*** <-ID-> *** WDM 26 T-UPDATE.wdm MESSU 25 MitT-UPDATE.MES 27 MitT-UPDATE.L61 28 MitT-UPDATE.L62 30 POCT-UPDATE1.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 PERLND 16 IMPLND 4 IMPLND 5 IMPLND 8 IMPLND 1 RCHRES 1 COPY 1 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 Vault 1 MAX 1 2 30 9 END DISPLY-INFO1 END DISPLY COPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 END TIMESERIES END COPY GENER OPCODE # # OPCD *** END OPCODE PARM # # K *** END PARM END GENER PERLND GEN-INFO <PLS ><-------Name------->NBLKS Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 16 C, Lawn, Flat 1 1 1 1 27 0 END GEN-INFO *** Section PWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *** 16 0 0 1 0 0 0 0 0 0 0 0 0 END ACTIVITY T-UPDATE 4/8/2024 1:46:48 PM Page 25 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 PWAT-PARM1 <PLS > PWATER variable monthly parameter value flags *** # - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT *** 16 0 0 0 0 0 0 0 0 0 0 0 END PWAT-PARM1 PWAT-PARM2 <PLS > PWATER input info: Part 2 *** # - # ***FOREST LZSN INFILT LSUR SLSUR KVARY AGWRC 16 0 4.5 0.03 400 0.05 0.5 0.996 END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 *** # - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP 16 0 0 2 2 0 0 0 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 *** # - # CEPSC UZSN NSUR INTFW IRC LZETP *** 16 0.1 0.25 0.25 6 0.5 0.25 END PWAT-PARM4 PWAT-STATE1 <PLS > *** Initial conditions at start of simulation ran from 1990 to end of 1992 (pat 1-11-95) RUN 21 *** # - # *** CEPS SURS UZS IFWS LZS AGWS GWVS 16 0 0 0 0 2.5 1 0 END PWAT-STATE1 END PERLND IMPLND GEN-INFO <PLS ><-------Name-------> Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 4 ROOF TOPS/FLAT 1 1 1 27 0 5 DRIVEWAYS/FLAT 1 1 1 27 0 8 SIDEWALKS/FLAT 1 1 1 27 0 1 ROADS/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 5 0 0 1 0 0 0 8 0 0 1 0 0 0 1 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 5 0 0 4 0 0 0 1 9 8 0 0 4 0 0 0 1 9 1 0 0 4 0 0 0 1 9 END PRINT-INFO IWAT-PARM1 <PLS > IWATER variable monthly parameter value flags *** T-UPDATE 4/8/2024 1:46:48 PM Page 26 # - # CSNO RTOP VRS VNN RTLI *** 4 0 0 0 0 0 5 0 0 0 0 0 8 0 0 0 0 0 1 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 5 400 0.01 0.1 0.1 8 400 0.01 0.1 0.1 1 400 0.01 0.1 0.1 END IWAT-PARM2 IWAT-PARM3 <PLS > IWATER input info: Part 3 *** # - # ***PETMAX PETMIN 4 0 0 5 0 0 8 0 0 1 0 0 END IWAT-PARM3 IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS 4 0 0 5 0 0 8 0 0 1 0 0 END IWAT-STATE1 END IMPLND SCHEMATIC <-Source-> <--Area--> <-Target-> MBLK *** <Name> # <-factor-> <Name> # Tbl# *** D1*** PERLND 16 0.263 RCHRES 1 2 PERLND 16 0.263 RCHRES 1 3 IMPLND 4 0.138 RCHRES 1 5 IMPLND 5 0.075 RCHRES 1 5 IMPLND 8 0.022 RCHRES 1 5 D3-TRADE*** IMPLND 1 0.032 RCHRES 1 5 ******Routing****** PERLND 16 0.263 COPY 1 12 IMPLND 4 0.138 COPY 1 15 IMPLND 5 0.075 COPY 1 15 IMPLND 8 0.022 COPY 1 15 PERLND 16 0.263 COPY 1 13 IMPLND 1 0.032 COPY 1 15 RCHRES 1 1 COPY 501 16 END SCHEMATIC NETWORK <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** COPY 501 OUTPUT MEAN 1 1 48.4 DISPLY 1 INPUT TIMSER 1 <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** END NETWORK RCHRES T-UPDATE 4/8/2024 1:46:48 PM Page 27 GEN-INFO RCHRES Name Nexits Unit Systems Printer *** # - #<------------------><---> User T-series Engl Metr LKFG *** in out *** 1 Vault 1 1 1 1 1 28 0 1 END GEN-INFO *** Section RCHRES*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG *** 1 1 0 0 0 0 0 0 0 0 0 END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ******************* PIVL PYR # - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR ********* 1 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO HYDR-PARM1 RCHRES Flags for each HYDR Section *** # - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** 1 0 1 0 0 4 0 0 0 0 0 0 0 0 0 2 2 2 2 2 END HYDR-PARM1 HYDR-PARM2 # - # FTABNO LEN DELTH STCOR KS DB50 *** <------><--------><--------><--------><--------><--------><--------> *** 1 1 0.01 0.0 0.0 0.5 0.0 END HYDR-PARM2 HYDR-INIT RCHRES Initial conditions for each HYDR section *** # - # *** VOL Initial value of COLIND Initial value of OUTDGT *** ac-ft for each possible exit for each possible exit <------><--------> <---><---><---><---><---> *** <---><---><---><---><---> 1 0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 END HYDR-INIT END RCHRES SPEC-ACTIONS END SPEC-ACTIONS FTABLES FTABLE 1 92 4 Depth Area Volume Outflow1 Velocity Travel Time*** (ft) (acres) (acre-ft) (cfs) (ft/sec) (Minutes)*** 0.000000 0.034022 0.000000 0.000000 0.066667 0.034022 0.002268 0.001155 0.133333 0.034022 0.004536 0.001633 0.200000 0.034022 0.006804 0.002000 0.266667 0.034022 0.009073 0.002310 0.333333 0.034022 0.011341 0.002583 0.400000 0.034022 0.013609 0.002829 0.466667 0.034022 0.015877 0.003056 0.533333 0.034022 0.018145 0.003267 0.600000 0.034022 0.020413 0.003465 0.666667 0.034022 0.022681 0.003652 0.733333 0.034022 0.024949 0.003831 0.800000 0.034022 0.027218 0.004001 0.866667 0.034022 0.029486 0.004164 0.933333 0.034022 0.031754 0.004321 1.000000 0.034022 0.034022 0.004473 1.066667 0.034022 0.036290 0.004620 1.133333 0.034022 0.038558 0.004762 1.200000 0.034022 0.040826 0.004900 1.266667 0.034022 0.043095 0.005034 1.333333 0.034022 0.045363 0.005165 T-UPDATE 4/8/2024 1:46:48 PM Page 28 1.400000 0.034022 0.047631 0.005293 1.466667 0.034022 0.049899 0.005417 1.533333 0.034022 0.052167 0.005539 1.600000 0.034022 0.054435 0.005658 1.666667 0.034022 0.056703 0.005775 1.733333 0.034022 0.058972 0.005889 1.800000 0.034022 0.061240 0.006001 1.866667 0.034022 0.063508 0.006111 1.933333 0.034022 0.065776 0.006220 2.000000 0.034022 0.068044 0.006326 2.066667 0.034022 0.070312 0.006431 2.133333 0.034022 0.072580 0.006533 2.200000 0.034022 0.074848 0.006635 2.266667 0.034022 0.077117 0.006734 2.333333 0.034022 0.079385 0.006833 2.400000 0.034022 0.081653 0.006930 2.466667 0.034022 0.083921 0.007025 2.533333 0.034022 0.086189 0.007120 2.600000 0.034022 0.088457 0.007213 2.666667 0.034022 0.090725 0.007305 2.733333 0.034022 0.092994 0.007395 2.800000 0.034022 0.095262 0.007485 2.866667 0.034022 0.097530 0.007574 2.933333 0.034022 0.099798 0.007661 3.000000 0.034022 0.102066 0.007748 3.066667 0.034022 0.104334 0.007833 3.133333 0.034022 0.106602 0.007918 3.200000 0.034022 0.108871 0.008002 3.266667 0.034022 0.111139 0.008933 3.333333 0.034022 0.113407 0.013598 3.400000 0.034022 0.115675 0.015882 3.466667 0.034022 0.117943 0.017659 3.533333 0.034022 0.120211 0.019171 3.600000 0.034022 0.122479 0.020512 3.666667 0.034022 0.124747 0.021733 3.733333 0.034022 0.127016 0.022861 3.800000 0.034022 0.129284 0.023917 3.866667 0.034022 0.131552 0.024912 3.933333 0.034022 0.133820 0.025857 4.000000 0.034022 0.136088 0.026758 4.066667 0.034022 0.138356 0.027623 4.133333 0.034022 0.140624 0.028455 4.200000 0.034022 0.142893 0.029257 4.266667 0.034022 0.145161 0.030034 4.333333 0.034022 0.147429 0.032025 4.400000 0.034022 0.149697 0.033663 4.466667 0.034022 0.151965 0.034999 4.533333 0.034022 0.154233 0.036200 4.600000 0.034022 0.156501 0.037315 4.666667 0.034022 0.158770 0.038369 4.733333 0.034022 0.161038 0.039374 4.800000 0.034022 0.163306 0.040338 4.866667 0.034022 0.165574 0.041269 4.933333 0.034022 0.167842 0.042170 5.000000 0.034022 0.170110 0.043045 5.066667 0.034022 0.172378 0.317592 5.133333 0.034022 0.174646 0.816192 5.200000 0.034022 0.176915 1.450002 5.266667 0.034022 0.179183 2.170154 5.333333 0.034022 0.181451 2.929626 5.400000 0.034022 0.183719 3.680069 5.466667 0.034022 0.185987 4.374641 5.533333 0.034022 0.188255 4.973545 5.600000 0.034022 0.190523 5.451289 5.666667 0.034022 0.192792 5.805272 5.733333 0.034022 0.195060 6.065464 5.800000 0.034022 0.197328 6.390670 5.866667 0.034022 0.199596 6.650166 5.933333 0.034022 0.201864 6.899876 6.000000 0.034022 0.204132 7.140830 T-UPDATE 4/8/2024 1:46:48 PM Page 29 6.066667 0.034022 0.206400 7.373890 END FTABLE 1 END FTABLES EXT SOURCES <-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # *** WDM 2 PREC ENGL 1 PERLND 1 999 EXTNL PREC WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC WDM 1 EVAP ENGL 0.76 PERLND 1 999 EXTNL PETINP WDM 1 EVAP ENGL 0.76 IMPLND 1 999 EXTNL PETINP END EXT SOURCES EXT TARGETS <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd *** <Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg*** RCHRES 1 HYDR RO 1 1 1 WDM 1000 FLOW ENGL REPL RCHRES 1 HYDR STAGE 1 1 1 WDM 1001 STAG ENGL REPL COPY 1 OUTPUT MEAN 1 1 48.4 WDM 701 FLOW ENGL REPL COPY 501 OUTPUT MEAN 1 1 48.4 WDM 801 FLOW ENGL REPL END EXT TARGETS MASS-LINK <Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->*** <Name> <Name> # #<-factor-> <Name> <Name> # #*** MASS-LINK 2 PERLND PWATER SURO 0.083333 RCHRES INFLOW IVOL END MASS-LINK 2 MASS-LINK 3 PERLND PWATER IFWO 0.083333 RCHRES INFLOW IVOL END MASS-LINK 3 MASS-LINK 5 IMPLND IWATER SURO 0.083333 RCHRES INFLOW IVOL END MASS-LINK 5 MASS-LINK 12 PERLND PWATER SURO 0.083333 COPY INPUT MEAN END MASS-LINK 12 MASS-LINK 13 PERLND PWATER IFWO 0.083333 COPY INPUT MEAN END MASS-LINK 13 MASS-LINK 15 IMPLND IWATER SURO 0.083333 COPY INPUT MEAN END MASS-LINK 15 MASS-LINK 16 RCHRES ROFLOW COPY INPUT MEAN END MASS-LINK 16 END MASS-LINK END RUN T-UPDATE 4/8/2024 1:46:48 PM Page 30 Predeveloped HSPF Message File T-UPDATE 4/8/2024 1:46:48 PM Page 31 Mitigated HSPF Message File T-UPDATE 4/8/2024 1:46:48 PM Page 32 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