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REVIEWED BLD2021-0235+Geotechnical_Report+3.18.2021_11.53.43_AM+2099618TECH NICA INFORMA REPORT RECEIVED BLD2021-0235 Mar 30 2021 CITY OF EDMONDS DEVELOPMENT SERVICES DEPARTMENT REVIEWED BY CITY OF EDMONDS TRANG RESIDENCE 23139 7ST" PLACE WEST; EDMONDS, WA 98026 DocuSign Envelope ID: A800D1 FC-05131-4D7A-8D93-B733592CA1AE Technical Information Report 23139 — 75'h Place West Edmonds, WA 98026 1 certify that this technical information report and all attachments were prepared either by me or my technical staff working directly under my supervision. ��,','92AA4134C9. ned by: ' /� �W, ,, .. REVISIONS Feb 3. 2021 1 Lot 2 — Building Permit TABLE OF CONTENTS MR 1 — PREPARATION OF STORMWATER SITE PLAN...........................................................................................2 PROJECTOVERVIEW...........................................................................................................................................2 SITEINFORMATION.............................................................................................................................................2 SOILSINFORMATION...........................................................................................................................................2 EXISTINGCONDITIONS.......................................................................................................................................3 DEVELOPEDCONDITIONS...................................................................................................................................3 THRESHOLD DETERMINATION............................................................................................................................3 MR2 — CSWPPP...................................................................................................................................................4 CONSTRUCTION SEQUENCE AND PROCEDURE....................................................................................................5 TRAPPINGSEDIMENT..........................................................................................................................................5 MR3 — SOURCE CONTROL OF POLLUTION...........................................................................................................6 MR4 — PRESERVATION OF NATURAL DRAINAGE SYSTEMS & OUTFALLS..........................................................6 MR5 — ON -SITE STORM WATER MANAGEMENT..................................................................................................6 Appendices • Appendix A: Soil Data • Appendix B: Drainage Calculations (WWHM Reports) • Appendix C: Civil Plans Lot 2 - Trang Residence Feb 2021 MR 1 — PREPARATION OF STORMWATER SITE PLAN Project Overview The property is located at 23139 — 75th Place West in the City of Edmonds, Washington. The project proposes to construct a single-family structure, driveway and associated utilities on the newly short platted lot. This Technical Information Report and attached Stormwater Site Plan submittal is required for the approval of the building permit for the above referenced subject property. The Stormwater Site Plan has been prepared in accordance the City of Edmonds 2017 Stormwater Addendum to Ecology's 2014 Stormwater Management Manual for Western Washington. Site Information Address: 23135 — 75th Place West; Edmonds, WA City, County, State: Edmonds, Snohomish County, Washington Governing Agency: City of Edmonds =c botheIL\nest svBtier—��V-12Nh St _1—.11 se �x5 23775 75th PI W ' ` s � m Kenmore em.. Lke FocsY P,k m lI! r1 , hz ncI { {I Figure 1 — Vicinity Map / Site Location Not -to -Scale Soils Information Soils Survey The Soils Conservation Service (SCS) mapped the soils information in the buildable project area as Alderwood/Urban Land (5/6). Refer to Figure 2 below and Appendix A for the detailed soil map. The Concept Group Page 2 Lot 2 - Trang Residence Feb 2021 Figure 2 — Soils Map Not -to -Scale Existing Conditions Lot 2 of the parent short plat is currently vacant. The general topography of the site slopes from west to east. Elevations on the site vary from a high point of 302 feet at the western o portion of the property to 296 feet at the eastern property line. Developed Conditions The project proposes to construct a single-family structure, driveway and associated utilities. Table 2 details the proposed impervious surface areas. Table 2 — Impervious Surface (SF) Roof 2,404 Permeable Pavement Driveway (PGIS) 950 Permeable Pavers Patio 210 Total 3,564 Threshold Determination The City of Edmonds 2017 Stormwater Addendum to Ecology's 2014 Stormwater Management Manual for Western Washington sets forth the drainage requirements for this project. Based on the flowchart of Figure 3.1, "Flow Chart for Determining Requirements for Development," Minimum Requirements (MR) 1 through 9 will apply to the new and replaced impervious surfaces and converted pervious surfaces. The Concept Group Page 3 Lot 2 - Trang Residence Feb 2021 Does the project result is 2,000 square feet, or greater, of new plus replaced hard surface area'. OR Does the land disturbing activitytatal 7,-000 square feet or Nceater' V lm NO hiLnimum Requu'eu:en,m No. 1 du*ugh 5 apply I Muumum Requirement No. 3 apnes Nest Q ae srtiayi 9z or Does the project add 5,000 square feat or more ofaww pLus replaced )lard surfaces DR ConVert 0.75 acres Or more 6f TeEetatLOU tD lawn or landscaped areas' DR Convert 2.5 acres or more of native vegetation to pastoJ-e me yes �3 Is this a road belated project? e A' I '% nimum Requirements app_yto .he ne-pr ;a ad replaced 7es hard sicfaces and converted Vegetation areas. All MiLaimmu Requirements appl-• to the aeW hard surfaces and con47li�--d eaetation areas. MR 2 - CSWPPP Does the proiect ad,a 5:000 squab feet or more of new bald surfaces' Yes Do new ]Bard surfaces add 50% or more to the e.uStiUE hard surfaces rhitbin t=e project limits? NQ Edmonds Stormwater Addendum, Figure 3.1 me No No additional requirements. A Construction Stormwater Pollution Prevention Plan (CSWPPP) has been prepared for this project under a separate cover. The project will comply with the thirteen (13) SWPPP elements during construction. All erosion and sediment control measures shall be governed by the requirements of the City of Edmonds. The Concept Group Page 4 Lot 2 - Trang Residence Feb 2021 Construction Sequence and Procedure Prior to the start of any grading activity upon the site, all erosion control measures, including installation of a stabilized construction entrance, shall be installed in accordance with the construction documents. The best construction practice will be employed to properly clear and grade the site and to schedule construction activities. The planned construction sequence for the construction of the site is as follows: 1. Flag or fence clearing limits. 2. Install catch basin protection if required. 3. Grade and install construction entrance(s). 4. Install perimeter protection (silt fence, brush barrier, etc.). 5. Construct sediment ponds and traps. 6. Grade and stabilize construction roads. 7. Construct surface water controls (interceptor dikes, pipe slope drains, etc.) simultaneously with clearing and grading for project development. 8. Maintain erosion control measures in accordance with City of Edmonds standards and manufacturer's recommendations. 9. Relocate erosion control measures or install new measures so that as site conditions change the erosion and sediment control is always in accordance with the City of Edmonds Erosion and Sediment Control Standards. 10. Cover all areas that will be unworked for more than seven days during the dry season or two days during the wet season with straw, wood fiber mulch, compost, plastic sheeting or equivalent. 11.Stabilize all areas that reach final grade within seven days. 12.Seed or sod any areas to remain unworked for more than 30 days. 13. Upon completion of the project, all disturbed areas must be stabilized and BMPs removed if appropriate. Trapping Sediment Structural control measures will be used to reduce erosion and retain sediment on the construction site. The control measures will be selected to fit specific site and seasonal conditions. The following items will be used to control erosion and sedimentation processes: • Temporary gravel construction entrance • Filter fabric fences (Silt fences) • Ground cover measures such as straw cover and/or hydroseeding • Inlet protection Vehicle tracking of mud off -site shall be avoided. Installation of a gravel construction entrance will be installed at a location to enter the site. The entrances are a minimum requirement and may be supplemented if tracking of mud onto public streets becomes excessive. The Concept Group Page 5 Lot 2 - Trang Residence Feb 2021 MR3 - SOURCE CONTROL OF POLLUTION BMPs for mobile fueling of vehicles and heavy equipment and for concrete handling will is included in the CSWPPP, prepared under a separate cover. MR4 - PRESERVATION OF NATURAL DRAINAGE SYSTEMS & OUTFALLS The property is located within the Hall Creek basin which drains to Lake Ballinger. The entire project site currently drains to this one basin. In the developed condition, stormwater will continue to drain to Lake Washington. MR5 - ON -SITE STORM WATER MANAGEMENT The Project utilizes Better Site Design by generally matching existing grades. Existing trees and other vegetation around the Site perimeter will be preserved where possible to help minimize disturbance to the hydrologic cycle. Native soils in all disturbed pervious areas will be amended with compost. Roof Surface 1. Full dispersion of runoff from impervious surfaces is not feasible due to the lack of native vegetation on the site. 2. Full infiltration of runoff from impervious surfaces is feasible because on -site infiltration test yielded measured infiltration rates of 20.0 inches per hour. No other BMPs are required to be evaluated. The continuous simulation model, the Western Washington Hydrology Model (WWHM) version 2012 was used to size the required infiltration trenches. Results from the WWHM model are included with this memorandum. The following parameters were used to model the facility: • Measured Infiltration rate = 20 inch/hour • Correction factor (per infiltration memorandum) = 0.225 • Design Infiltration rate = 4.5 inch/hour Infiltration trenches area proposed to mitigate onsite runoff, infiltrating 100% of the 25-year developed flow, with an overflow release rate of 0.00 cfs. Refer to Table 3 for the trench dimensions. Table 3 - Infiltration Trench Design Impervious Roof Required Trench Provided Trench Lot 2:2,404SF 94SFx3'D 20LFx5'Wx3'D = 100SFx3'D Infiltration trenches are to be constructed with a 5-ft setback from all property lines and lo- ft setback from building foundations and utility lines. If the 10 feet setback cannot be met, then the bottom of the trench needs to be lined. If the proposed location of the trench is under the construction entrance, over excavation may be required to avoid impact from construction traffic. A geotechnical engineer will need to approve the subsurface grade to ensure design infiltration rates are met before rock layers are installed during the building permit phase of the project. The Concept Group Page 6 Lot 2 - Trang Residence Feb 2021 Driveway/Sidewalk Surface 1. Runoff from the proposed driveway for Lot 2 is mitigated with permeable pavement surfaces to infiltrate stormwater runoff. 2. Runoff from the proposed patio is mitigated with permeable pavement surfaces to infiltrate stormwater runoff. Lawn and Landscape Area Soil Management Plan 1. Within the limits of site disturbance, duff and topsoil will be retained in an undisturbed state and stockpiled for later use to stabilize and amend soils throughout the Site. Postconstruction soil amendment will meet the requirements of BMP T5.13 Post -Construction Soil Quality and Depth. Operation and Maintenance The owner or operator of the project shall be responsible for maintaining the stormwater facilities. Proper maintenance is important for adequate functioning of the stormwater facilities. If it is unclear whether a problem exists, contact a Professional Engineer. At a minimum, infiltration trenches must be maintained as follows: • Trenches must be inspected annually and after major storm events to identify and repair any physical defects. Maintenance and operation of the system should focus on ensuring the system's viability by preventing sediment -laden flows from entering the device. Excessive sedimentation will result in a plugged or nonfunctioning facility. • If the trench has a catch basin or yard drain, sediment accumulation must be removed on a yearly basis or more frequently if necessary. Prolonged ponding around or atop a device may indicate a plugged facility. • If the device becomes plugged, it must be replaced. • Keeping the areas that drain to infiltration and dispersion devices well swept and clean will enhance the longevity of these devices. • For roofs, frequent cleaning of gutters will reduce sediment loads to these devices. At a minimum, permeable pavement must be maintained as follows: • The area covered by permeable pavement must be maintained as permeable pavement and may not be changed without written approval the City of Edmonds. Permeable pavements must be inspected after one major storm each year to make sure it is working properly. Prolonged ponding or standing water on the pavement surface is a sign that the system is defective and may need to be replaced. A typical permeable pavement system has a life expectancy of approximately 25-years. To help extend the useful life of the system, the surface of the permeable pavement should be kept clean and free of leaves, debris, and sediment through regular sweeping or vacuum sweeping. The owner is responsible for the repair of all ruts, deformation, and/or broken paving units. The Concept Group Page 7 Trang Short Plat -Technical Information Report Appendix A Soils Data The Concept Group Appendices MEMORANDUM 4701 SW Admiral Way, Ste 353 • Seattle, WA 98116 • T 206.446.1291 • www.ConceptBusinessGroup.com Date: March 8, 2018 To: City of Edmonds Public Works Department From: Anna Nguyen, P.E. Subject: Drainage Calculations & Subsurface Report Project Address: 23135 75" Place W igned b- ' D9363A2AA4134C9... Geologic Setting The Web Soil Survey, provided by the USDA Natural Resources Conservation Service was referenced for the geologic and soil conditions of the project site. According to this publication, the surficial soil unit at the project site and its immediate vicinity is mapped as Alderwood/Urban Land (5/6). Figure 1 — Geologic Map (Not -to -Scale) A NEW DIMENSION OF DESIGN PERCEPTION 23135 711 Place West Page 2 of 4 Small Scale Pilot Infiltration Test On March 7, 2018, we performed a field infiltration test. The test pit location is shown in Figure 2. The small-scale infiltration test was performed in accordance with the specifications provided in the 2014 DOE Stormwater Management Manual for Western Washington. The test consists of excavating a test pit to the design bottom of the proposed infiltration facility (5 feet deep) with a minimum of 12 square feet bottom area. The test pit is then pre-soaked with at least 12 inches of water above the bottom for a period of 6 hours. At the end of pre-soak period, the pit is filled with 12 inches of water and a constant head is maintained for the constant head testing period of one hour. The volume of water per time unit needed to maintain 12 inches of constant head is recorded. The field infiltration rate is then calculated based on the final measured volume per time unit and the surface area of the hole. In addition, at the end of the constant head test, we shut the water off and measured the falling head infiltration rate by recording the drop in water level between regular time intervals. An additional test pit was excavated to a depth of 7 feet below the existing grade to verify the any presence of groundwater and soil conditions. Based on the surface area of the test hole, and the measured volume of water per hour needed to maintain the constant head, we calculated a field infiltration rate of 20 inches per hour. Groundwater/ Hydraulic Restrictive Layer This test was conducted during the wet -season. The test pit was excavated to a total depth of 7 FT. The subsurface exploration did not encounter a restrictive/hardpan clay layer or groundwater. H-LT I E - FEV. F r' � N89'28'54"E .. -- 206.42'IE 6 � 1 �� f F.F 7- i •. ......:I.E 1 { �6 Infiltration test pit fDz� .., ,¢ location �F TH L- E Lam= T H E Jj + F. F.305.26'� ! i T = I--------- .. N83'10'OS'E �T i Figure 2 - Soils Test Pit Location (Not -to -Scale) THE CONCEPT GROUP 23135 711 Place West Page 3 of 4 Depth (FT) Sample USCS Graphic Description 0.0 0.5 top soil 1.0-- 1.5 compact gray soil with some gravel, no 2.0 2 SP mottling or water seepage 2'5 3.0 3 SM f medium brown moist soil with some rocks, no mottling or water seepage 3.5 4.0 4.5 5.0 4 OL OZZE" clay mixed with medium brown moist soil 5.5 6.0 6.5 iiL 7.0 Figure 3 - Soils Log (Not -to -Scale) Correction Factor The correction factor was calculated based on Table B.1 of the 2017 City of Edmonds Stormwater Manual. The test was conducted during the wet -season in the vicinity of the proposed stormwater BMP; therefore, the minimum correction factor is recommended for this site. Design Infiltration Rate = Measured Infiltration Rate x CFv + CFT + Urn Where: CFv =0.50 CFT=0.50 CFm =0.90 Design Infiltration Rate = 20.0 x 0.50 x 0.50 x 0.90 = 4.5 inches/hour Table B.I. Correction Factors to be Used With In -Situ Saturated Hydraulic Conductivity Measurements to Estimate Design Rates. Issue Partial Correction Factor Site variability and number of locations tested (CF.;) CFv = 0.33 to 10 Test Method (CFT) CFT: • Large-scale PIT • CFr = 0.75 for Large-scale PIT • Small-scale PIT • CFr = 0.5 for Small-scale PIT • Other small-scale (e.g., Double ring, falling head) • CFr = 0.4 for other small-scale test • Grain Size Method • CFr = 0.4 for Grain Size Method Degree of influent control to prevent siltation and bio- buildu CF.,,, = 0.9 Figure 4 — Table B.1 (2017 Edmonds Stormwater Addendum) THE CONCEPT GROUP 23135 711 Place West Page 4 of 4 Recommendations Based on our infiltration testing on the site, it is our opinion infiltration of the development storm water on the site is feasible. Limitations The conclusions and recommendations contained in this report are based on site conditions as they existed at the time of our exploration and assume that the soil and groundwater conditions encountered in the test pits are representative of subsurface conditions on the site. If the subsurface conditions encountered during construction are significantly different from those observed in our explorations, we should be advised at once so that we can review these conditions and reconsider our recommendations where necessary. Unanticipated soil conditions are commonly encountered on construction sites and cannot be fully anticipated by merely taking soil samples in test pits. Subsurface conditions can also vary between exploration locations. Such unexpected conditions frequently require making additional expenditures to attain a properly constructed project. This report has been prepared for the exclusive use of property owners and its representatives for specific application to this project and site. Our recommendations and conclusions are based on observed site materials and engineering analyses. Our conclusions and recommendations are professional opinions derived in accordance with current standards of practice within the scope of our services and within budget and time constraints. No warranty is expressed or implied. The scope of our services does not include services related to construction safety precautions, and our recommendations are not intended to direct the contractor's methods, techniques, sequences, or procedures, except as specifically described in our report for consideration in stormwater design. THE CONCEPT GROUP Trang Short Plat -Technical Information Report Appendix B Drainage Calculations (WWHM Reports) The Concept Group Appendices WWH? PROJECT General Model Information Project Name: 23135 75th PI W - Lot 2 Site Name: Lot 2 Site Address: 23135 75th PI W City: Edmonds Report Date: 1 /27/2021 Gage: Everett Data Start: 1948/10/01 00:00 Data End: 2009/09/30 00:00 Timestep: Hourly Precip Scale: 1.000 Version Date: 2019/09/13 Version: 4.2.17 POC Thresholds Low Flow Threshold for POC1: 50 Percent of the 2 Year High Flow Threshold for POC1: 50 Year 23135 75th PI W - Lot 2 1/27/2021 3:56:50 PM Page 2 Landuse Basin Data Predeveloped Land Use Basin 1 Bypass: No GroundWater: No Pervious Land Use acre C, Forest, Flat 0.0552 Pervious Total 0.0552 Impervious Land Use acre Impervious Total 0 Basin Total 0.0552 Element Flows To: Surface Interflow Groundwater 23135 75th PI W - Lot 2 1/27/2021 3:56:50 PM Page 3 Mitigated Land Use Basin 1 Bypass: No GroundWater: No Pervious Land Use acre Pervious Total 0 Impervious Land Use acre ROOF TOPS FLAT 0.0552 Impervious Total 0.0552 Basin Total 0.0552 Element Flows To: Surface Interflow Groundwater Gravel Trench Bed 1 Gravel Trench Bed 1 23135 75th PI W - Lot 2 1/27/2021 3:56:50 PM Page 4 Routing Elements Predeveloped Routing 23135 75th PI W - Lot 2 1/27/2021 3:56:50 PM Page 5 Mitigated Routing Gravel Trench Bed 1 Bottom Length: Bottom Width: Trench bottom slope 1: Trench Left side slope 0: Trench right side slope 2: Material thickness of first layer: Pour Space of material for first layer: Material thickness of second layer: Pour Space of material for second layer Material thickness of third layer: Pour Space of material for third layer: Infiltration On Infiltration rate: Infiltration safety factor: Total Volume Infiltrated (ac-ft.): Total Volume Through Riser (ac-ft.): Total Volume Through Facility (ac-ft.): Percent Infiltrated: Total Precip Applied to Facility: Total Evap From Facility: Discharge Structure Riser Height: 0 ft. Riser Diameter: 0 in. Element Flows To: Outlet 1 Outlet 2 22.51 ft. 4.17 ft. 0 To 1 0 To 1 0 To 1 3 0.3 0 0 0 0 20 0.225 7.722 0 7.722 100 0 0 Gravel Trench Bed Hydraulic Table Stage(feet) Area(ac.) Volume(ac-%) Discharge(cfs) Infilt(cfs) 0.0000 0.002154 0.000000 0.000 0.000 0.0333 0.002154 0.000022 0.000 0.009 0.0667 0.002154 0.000043 0.000 0.009 0.1000 0.002154 0.000065 0.000 0.009 0.1333 0.002154 0.000086 0.000 0.009 0.1667 0.002154 0.000108 0.000 0.009 0.2000 0.002154 0.000129 0.000 0.009 0.2333 0.002154 0.000151 0.000 0.009 0.2667 0.002154 0.000172 0.000 0.009 0.3000 0.002154 0.000194 0.000 0.009 0.3333 0.002154 0.000215 0.000 0.009 0.3667 0.002154 0.000237 0.000 0.009 0.4000 0.002154 0.000259 0.000 0.009 0.4333 0.002154 0.000280 0.000 0.009 0.4667 0.002154 0.000302 0.000 0.009 0.5000 0.002154 0.000323 0.000 0.009 0.5333 0.002154 0.000345 0.000 0.009 0.5667 0.002154 0.000366 0.000 0.009 0.6000 0.002154 0.000388 0.000 0.009 0.6333 0.002154 0.000409 0.000 0.009 0.6667 0.002154 0.000431 0.000 0.009 0.7000 0.002154 0.000452 0.000 0.009 0.7333 0.002154 0.000474 0.000 0.009 0.7667 0.002154 0.000495 0.000 0.009 23135 75th PI W - Lot 2 1/27/2021 3:56:50 PM Page 6 0.8000 0.002154 0.000517 0.000 0.009 0.8333 0.002154 0.000539 0.000 0.009 0.8667 0.002154 0.000560 0.000 0.009 0.9000 0.002154 0.000582 0.000 0.009 0.9333 0.002154 0.000603 0.000 0.009 0.9667 0.002154 0.000625 0.000 0.009 1.0000 0.002154 0.000646 0.000 0.009 1.0333 0.002154 0.000668 0.000 0.009 1.0667 0.002154 0.000689 0.000 0.009 1.1000 0.002154 0.000711 0.000 0.009 1.1333 0.002154 0.000732 0.000 0.009 1.1667 0.002154 0.000754 0.000 0.009 1.2000 0.002154 0.000776 0.000 0.009 1.2333 0.002154 0.000797 0.000 0.009 1.2667 0.002154 0.000819 0.000 0.009 1.3000 0.002154 0.000840 0.000 0.009 1.3333 0.002154 0.000862 0.000 0.009 1.3667 0.002154 0.000883 0.000 0.009 1.4000 0.002154 0.000905 0.000 0.009 1.4333 0.002154 0.000926 0.000 0.009 1.4667 0.002154 0.000948 0.000 0.009 1.5000 0.002154 0.000969 0.000 0.009 1.5333 0.002154 0.000991 0.000 0.009 1.5667 0.002154 0.001013 0.000 0.009 1.6000 0.002154 0.001034 0.000 0.009 1.6333 0.002154 0.001056 0.000 0.009 1.6667 0.002154 0.001077 0.000 0.009 1.7000 0.002154 0.001099 0.000 0.009 1.7333 0.002154 0.001120 0.000 0.009 1.7667 0.002154 0.001142 0.000 0.009 1.8000 0.002154 0.001163 0.000 0.009 1.8333 0.002154 0.001185 0.000 0.009 1.8667 0.002154 0.001206 0.000 0.009 1.9000 0.002154 0.001228 0.000 0.009 1.9333 0.002154 0.001250 0.000 0.009 1.9667 0.002154 0.001271 0.000 0.009 2.0000 0.002154 0.001293 0.000 0.009 2.0333 0.002154 0.001314 0.000 0.009 2.0667 0.002154 0.001336 0.000 0.009 2.1000 0.002154 0.001357 0.000 0.009 2.1333 0.002154 0.001379 0.000 0.009 2.1667 0.002154 0.001400 0.000 0.009 2.2000 0.002154 0.001422 0.000 0.009 2.2333 0.002154 0.001443 0.000 0.009 2.2667 0.002154 0.001465 0.000 0.009 2.3000 0.002154 0.001486 0.000 0.009 2.3333 0.002154 0.001508 0.000 0.009 2.3667 0.002154 0.001530 0.000 0.009 2.4000 0.002154 0.001551 0.000 0.009 2.4333 0.002154 0.001573 0.000 0.009 2.4667 0.002154 0.001594 0.000 0.009 2.5000 0.002154 0.001616 0.000 0.009 2.5333 0.002154 0.001637 0.000 0.009 2.5667 0.002154 0.001659 0.000 0.009 2.6000 0.002154 0.001680 0.000 0.009 2.6333 0.002154 0.001702 0.000 0.009 2.6667 0.002154 0.001723 0.000 0.009 2.7000 0.002154 0.001745 0.000 0.009 23135 75th PI W - Lot 2 1/27/2021 3:56:50 PM Page 7 2.7333 0.002154 0.001767 0.000 0.009 2.7667 0.002154 0.001788 0.000 0.009 2.8000 0.002154 0.001810 0.000 0.009 2.8333 0.002154 0.001831 0.000 0.009 2.8667 0.002154 0.001853 0.000 0.009 2.9000 0.002154 0.001874 0.000 0.009 2.9333 0.002154 0.001896 0.000 0.009 2.9667 0.002154 0.001917 0.000 0.009 3.0000 0.002154 0.001939 0.000 0.009 23135 75th PI W - Lot 2 1/27/2021 3:56:50 PM Page 8 Analysis Results POC 1 U 0.00 0.00 a J 000 — Cumulative Pro6a6ility T — 10E-3 10E2 10E 1 1 10 100 0 000, o 000, Percent Time Exce edi-g 1 U.5 1 2 5 10 20 30 50 70 90 90 95 99 99 9�.5 1 U + Predeveloped x Mitigated Predeveloped Landuse Totals for POC #1 Total Pervious Area: 0.0552 Total Impervious Area: 0 Mitigated Landuse Totals for POC #1 Total Pervious Area: 0 Total Impervious Area: 0.0552 Flow Frequency Method: Log Pearson Type III 17B Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.001026 5 year 0.001531 10 year 0.00192 25 year 0.002479 50 year 0.002946 100 year 0.003459 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0 5 year 0 10 year 0 25 year 0 50 year 0 100 year 0 Annual Peaks Annual Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1949 0.000 0.000 1950 0.001 0.000 1951 0.001 0.000 1952 0.001 0.000 1953 0.001 0.000 1954 0.001 0.000 1955 0.002 0.000 1956 0.001 0.000 1957 0.002 0.000 1958 0.001 0.000 23135 75th PI W - Lot 2 1/27/2021 3:56:50 PM Page 9 1959 0.001 0.000 1960 0.001 0.000 1961 0.001 0.000 1962 0.001 0.000 1963 0.002 0.000 1964 0.001 0.000 1965 0.001 0.000 1966 0.001 0.000 1967 0.001 0.000 1968 0.001 0.000 1969 0.001 0.000 1970 0.001 0.000 1971 0.001 0.000 1972 0.001 0.000 1973 0.001 0.000 1974 0.001 0.000 1975 0.001 0.000 1976 0.001 0.000 1977 0.001 0.000 1978 0.001 0.000 1979 0.002 0.000 1980 0.001 0.000 1981 0.001 0.000 1982 0.001 0.000 1983 0.001 0.000 1984 0.001 0.000 1985 0.001 0.000 1986 0.004 0.000 1987 0.001 0.000 1988 0.001 0.000 1989 0.001 0.000 1990 0.001 0.000 1991 0.001 0.000 1992 0.001 0.000 1993 0.001 0.000 1994 0.000 0.000 1995 0.001 0.000 1996 0.002 0.000 1997 0.004 0.000 Ranked Annual Peaks Ranked Annual Peaks for Predeveloped and Rank Predeveloped Mitigated 1 0.0042 0.0000 2 0.0035 0.0000 3 0.0023 0.0000 4 0.0019 0.0000 5 0.0019 0.0000 6 0.0017 0.0000 7 0.0017 0.0000 8 0.0015 0.0000 9 0.0015 0.0000 10 0.0014 0.0000 11 0.0014 0.0000 12 0.0014 0.0000 13 0.0013 0.0000 14 0.0013 0.0000 15 0.0013 0.0000 Mitigated. POC #1 23135 75th PI W - Lot 2 1/27/2021 3:57:01 PM Page 10 16 0.0012 0.0000 17 0.0011 0.0000 18 0.0011 0.0000 19 0.0011 0.0000 20 0.0011 0.0000 21 0.0011 0.0000 22 0.0010 0.0000 23 0.0010 0.0000 24 0.0010 0.0000 25 0.0010 0.0000 26 0.0010 0.0000 27 0.0010 0.0000 28 0.0010 0.0000 29 0.0010 0.0000 30 0.0009 0.0000 31 0.0009 0.0000 32 0.0009 0.0000 33 0.0009 0.0000 34 0.0008 0.0000 35 0.0008 0.0000 36 0.0008 0.0000 37 0.0008 0.0000 38 0.0008 0.0000 39 0.0008 0.0000 40 0.0008 0.0000 41 0.0008 0.0000 42 0.0008 0.0000 43 0.0007 0.0000 44 0.0007 0.0000 45 0.0006 0.0000 46 0.0005 0.0000 47 0.0005 0.0000 48 0.0004 0.0000 49 0.0004 0.0000 23135 75th PI W - Lot 2 1/27/2021 3:57:01 PM Page 11 Duration Flows The Facility PASSED Flow(cfs) Predev Mit Percentage Pass/Fail 0.0005 4656 0 0 Pass 0.0005 4211 0 0 Pass 0.0006 3813 0 0 Pass 0.0006 3461 0 0 Pass 0.0006 3118 0 0 Pass 0.0006 2810 0 0 Pass 0.0007 2533 0 0 Pass 0.0007 2283 0 0 Pass 0.0007 2067 0 0 Pass 0.0007 1865 0 0 Pass 0.0008 1681 0 0 Pass 0.0008 1495 0 0 Pass 0.0008 1333 0 0 Pass 0.0008 1209 0 0 Pass 0.0009 1098 0 0 Pass 0.0009 1003 0 0 Pass 0.0009 910 0 0 Pass 0.0009 819 0 0 Pass 0.0010 738 0 0 Pass 0.0010 664 0 0 Pass 0.0010 583 0 0 Pass 0.0010 523 0 0 Pass 0.0011 477 0 0 Pass 0.0011 431 0 0 Pass 0.0011 393 0 0 Pass 0.0011 361 0 0 Pass 0.0012 343 0 0 Pass 0.0012 316 0 0 Pass 0.0012 291 0 0 Pass 0.0012 270 0 0 Pass 0.0013 254 0 0 Pass 0.0013 239 0 0 Pass 0.0013 227 0 0 Pass 0.0013 217 0 0 Pass 0.0013 200 0 0 Pass 0.0014 185 0 0 Pass 0.0014 178 0 0 Pass 0.0014 165 0 0 Pass 0.0014 156 0 0 Pass 0.0015 152 0 0 Pass 0.0015 144 0 0 Pass 0.0015 139 0 0 Pass 0.0015 135 0 0 Pass 0.0016 128 0 0 Pass 0.0016 124 0 0 Pass 0.0016 121 0 0 Pass 0.0016 118 0 0 Pass 0.0017 115 0 0 Pass 0.0017 113 0 0 Pass 0.0017 110 0 0 Pass 0.0017 108 0 0 Pass 0.0018 105 0 0 Pass 0.0018 105 0 0 Pass 23135 75th PI W - Lot 2 1/27/2021 3:57:01 PM Page 12 0.0018 102 0 0 Pass 0.0018 101 0 0 Pass 0.0019 97 0 0 Pass 0.0019 94 0 0 Pass 0.0019 90 0 0 Pass 0.0019 86 0 0 Pass 0.0020 83 0 0 Pass 0.0020 82 0 0 Pass 0.0020 78 0 0 Pass 0.0020 75 0 0 Pass 0.0021 75 0 0 Pass 0.0021 73 0 0 Pass 0.0021 72 0 0 Pass 0.0021 71 0 0 Pass 0.0022 70 0 0 Pass 0.0022 70 0 0 Pass 0.0022 68 0 0 Pass 0.0022 67 0 0 Pass 0.0023 67 0 0 Pass 0.0023 63 0 0 Pass 0.0023 61 0 0 Pass 0.0023 60 0 0 Pass 0.0024 58 0 0 Pass 0.0024 57 0 0 Pass 0.0024 55 0 0 Pass 0.0024 54 0 0 Pass 0.0025 54 0 0 Pass 0.0025 52 0 0 Pass 0.0025 52 0 0 Pass 0.0025 51 0 0 Pass 0.0026 49 0 0 Pass 0.0026 49 0 0 Pass 0.0026 48 0 0 Pass 0.0026 45 0 0 Pass 0.0027 45 0 0 Pass 0.0027 43 0 0 Pass 0.0027 42 0 0 Pass 0.0027 41 0 0 Pass 0.0027 40 0 0 Pass 0.0028 39 0 0 Pass 0.0028 37 0 0 Pass 0.0028 37 0 0 Pass 0.0028 35 0 0 Pass 0.0029 34 0 0 Pass 0.0029 34 0 0 Pass 0.0029 33 0 0 Pass 0.0029 32 0 0 Pass 23135 75th PI W - Lot 2 1/27/2021 3:57:01 PM Page 13 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. 23135 75th PI W - Lot 2 1/27/2021 3:57:01 PM Page 14 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 Gravel Trench Bed 1 PDC ❑ 7.68 ❑ 100.00 Total Volume Infiltrated 7.68 0.00 0.00 100.00 0.00 0% No Treat. Credit Duration Compliance with LID Analysis Standard B% oft-yrto 50% of Result = yr Passed 23135 75th PI W - Lot 2 1/27/2021 3:57:01 PM Page 15 POC 2 POC #2 was not reported because POC must exist in both scenarios and both scenarios must have been run. 23135 75th PI W - Lot 2 1/27/2021 3:57:05 PM Page 16 Model Default Modifications Total of 2 changes have been made. PERLND Changes Name Property Original Changed A/B; Forest; Flat SLSUR 0.05 0.02 IMPLND Changes Name Property Original Changed ROADS/FLAT SLSUR 0.01 0.02 23135 75th PI W - Lot 2 1/27/2021 3:57:05 PM Page 17 Appendix Predeveloped Schematic Basin 1 0.06ac LAi 23135 75th PI W - Lot 2 1/27/2021 3:57:05 PM Page 18 Mitigated Schematic 23135 75th PI W - Lot 2 1/27/2021 3:57:05 PM Page 19 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 2009 09 30 UNIT SYSTEM FILES <File> <Un#> END FILES OPN SEQUENCE 1 <----------- File Name---------- -------------------->*** *** INGRP INDELT 00:60 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 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 20 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 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 21 END IMPLND SCHEMATIC <-Source-> <Name> # Basin 1*** PERLND 10 PERLND 10 ******Routing****** END SCHEMATIC <--Area--> <-Target-> MBLK <-factor-> <Name> # Tbl# 0.0552 COPY 501 12 0.0552 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 12.1 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 SUM PERLND 1 999 EXTNL PREC WDM 2 PREC ENGL 1 SUM IMPLND 1 999 EXTNL PREC 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 22 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 12.1 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 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 23 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 2009 09 30 UNIT SYSTEM FILES <File> <Un#> END FILES OPN SEQUENCE 1 <----------- File Name---------- -------------------->*** *** INGRP INDELT 00:60 IMPLND 4 RCHRES 1 COPY 1 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<---------- Title ----------- >***TRAN PIVL DIG1 FIL1 1 Gravel Trench Bed 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 *** END GEN-INFO *** Section PWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *** END ACTIVITY PRINT -INFO <PLS > ***************** Print -flags ***************************** PIVL PYR # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ********* END PRINT -INFO PWAT-PARM1 23135 75th PI W -Lot 2 1/27/2021 3:57:06 PM Page 24 <PLS > PWATER variable monthly parameter value flags *** # - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT *** END PWAT-PARM1 PWAT-PARM2 <PLS > PWATER input info: Part 2 *** # - # ***FOREST LZSN INFILT LSUR SLSUR KVARY END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 # - # ***PETMAX PETMIN INFEXP END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 # - # CEPSC UZSN NSUR END PWAT-PARM4 AGWRC *** INFILD DEEPFR BASETP AGWETP *** INTFW IRC LZETP *** 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 END PWAT-STATEI END PERLND IMPLND GEN-INFO <PLS ><------- Name ------- > 4 ROOF TOPS/FLAT END GEN-INFO *** Section IWATER*** Unit -systems Printer *** User t-series Engl Metr *** in out *** 1 1 1 27 0 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 0 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 END IWAT-PARM3 IWAT-STATEI <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS 4 0 0 END IWAT-STATEI GWVS 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 25 END IMPLND SCHEMATIC <-Source-> <Name> # Basin 1*** IMPLND 4 ******Routing****** IMPLND 4 RCHRES 1 END SCHEMATIC <--Area--> <-Target-> MBLK <-factor-> <Name> # Tbl# 0.0552 RCHRES 1 5 0.0552 COPY 1 15 1 COPY 501 17 NETWORK <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** COPY 501 OUTPUT MEAN 1 1 12.1 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 # - #<------------------ >< --- > User T-series in out 1 Gravel Trench Be-008 2 1 1 1 END GEN-INFO *** Section RCHRES*** Printer Engl Metr LKFG 28 0 1 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 Al A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** 1 0 1 0 0 4 5 0 0 0 0 0 0 0 0 2 2 2 2 2 END HYDR-PARM1 HYDR-PARM2 # - # FTABNO LEN DELTH STCOR KS DB50 *** <------ ><-------->< -------- ><-------- >< -------- ><-------- ><-------- > *** 1 1 0.01 0.0 0.0 0.5 0.0 END HYDR-PARM2 HYDR-INIT RCHRES Initial conditions for each HYDR section *** # - # *** VOL Initial value of COLIND Initial value of OUTDGT *** ac-ft for each possible exit for each possible exit <------><-------- > <--- ><--- ><--- >< --- ><---> *** <--- ><--- ><--- ><--- ><---> 1 0 4.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 END HYDR-INIT END RCHRES SPEC -ACTIONS END SPEC -ACTIONS 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 26 FTABLES FTABLE 1 92 5 Depth Area Volume Outflowl Outflow2 (ft) (acres) (acre-ft) (cfs) (cfs) 0.000000 0.002154 0.000000 0.000000 0.000000 0.033333 0.002154 0.000022 0.000000 0.009775 0.066667 0.002154 0.000043 0.000000 0.009775 0.100000 0.002154 0.000065 0.000000 0.009775 0.133333 0.002154 0.000086 0.000000 0.009775 0.166667 0.002154 0.000108 0.000000 0.009775 0.200000 0.002154 0.000129 0.000000 0.009775 0.233333 0.002154 0.000151 0.000000 0.009775 0.266667 0.002154 0.000172 0.000000 0.009775 0.300000 0.002154 0.000194 0.000000 0.009775 0.333333 0.002154 0.000215 0.000000 0.009775 0.366667 0.002154 0.000237 0.000000 0.009775 0.400000 0.002154 0.000259 0.000000 0.009775 0.433333 0.002154 0.000280 0.000000 0.009775 0.466667 0.002154 0.000302 0.000000 0.009775 0.500000 0.002154 0.000323 0.000000 0.009775 0.533333 0.002154 0.000345 0.000000 0.009775 0.566667 0.002154 0.000366 0.000000 0.009775 0.600000 0.002154 0.000388 0.000000 0.009775 0.633333 0.002154 0.000409 0.000000 0.009775 0.666667 0.002154 0.000431 0.000000 0.009775 0.700000 0.002154 0.000452 0.000000 0.009775 0.733333 0.002154 0.000474 0.000000 0.009775 0.766667 0.002154 0.000495 0.000000 0.009775 0.800000 0.002154 0.000517 0.000000 0.009775 0.833333 0.002154 0.000539 0.000000 0.009775 0.866667 0.002154 0.000560 0.000000 0.009775 0.900000 0.002154 0.000582 0.000000 0.009775 0.933333 0.002154 0.000603 0.000000 0.009775 0.966667 0.002154 0.000625 0.000000 0.009775 1.000000 0.002154 0.000646 0.000000 0.009775 1.033333 0.002154 0.000668 0.000000 0.009775 1.066667 0.002154 0.000689 0.000000 0.009775 1.100000 0.002154 0.000711 0.000000 0.009775 1.133333 0.002154 0.000732 0.000000 0.009775 1.166667 0.002154 0.000754 0.000000 0.009775 1.200000 0.002154 0.000776 0.000000 0.009775 1.233333 0.002154 0.000797 0.000000 0.009775 1.266667 0.002154 0.000819 0.000000 0.009775 1.300000 0.002154 0.000840 0.000000 0.009775 1.333333 0.002154 0.000862 0.000000 0.009775 1.366667 0.002154 0.000883 0.000000 0.009775 1.400000 0.002154 0.000905 0.000000 0.009775 1.433333 0.002154 0.000926 0.000000 0.009775 1.466667 0.002154 0.000948 0.000000 0.009775 1.500000 0.002154 0.000969 0.000000 0.009775 1.533333 0.002154 0.000991 0.000000 0.009775 1.566667 0.002154 0.001013 0.000000 0.009775 1.600000 0.002154 0.001034 0.000000 0.009775 1.633333 0.002154 0.001056 0.000000 0.009775 1.666667 0.002154 0.001077 0.000000 0.009775 1.700000 0.002154 0.001099 0.000000 0.009775 1.733333 0.002154 0.001120 0.000000 0.009775 1.766667 0.002154 0.001142 0.000000 0.009775 1.800000 0.002154 0.001163 0.000000 0.009775 1.833333 0.002154 0.001185 0.000000 0.009775 1.866667 0.002154 0.001206 0.000000 0.009775 1.900000 0.002154 0.001228 0.000000 0.009775 1.933333 0.002154 0.001250 0.000000 0.009775 1.966667 0.002154 0.001271 0.000000 0.009775 2.000000 0.002154 0.001293 0.000000 0.009775 2.033333 0.002154 0.001314 0.000000 0.009775 2.066667 0.002154 0.001336 0.000000 0.009775 2.100000 0.002154 0.001357 0.000000 0.009775 2.133333 0.002154 0.001379 0.000000 0.009775 Velocity Travel Time*** (ft/sec) (Minutes)*** 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 27 2.166667 0.002154 0.001400 0.000000 0.009775 2.200000 0.002154 0.001422 0.000000 0.009775 2.233333 0.002154 0.001443 0.000000 0.009775 2.266667 0.002154 0.001465 0.000000 0.009775 2.300000 0.002154 0.001486 0.000000 0.009775 2.333333 0.002154 0.001508 0.000000 0.009775 2.366667 0.002154 0.001530 0.000000 0.009775 2.400000 0.002154 0.001551 0.000000 0.009775 2.433333 0.002154 0.001573 0.000000 0.009775 2.466667 0.002154 0.001594 0.000000 0.009775 2.500000 0.002154 0.001616 0.000000 0.009775 2.533333 0.002154 0.001637 0.000000 0.009775 2.566667 0.002154 0.001659 0.000000 0.009775 2.600000 0.002154 0.001680 0.000000 0.009775 2.633333 0.002154 0.001702 0.000000 0.009775 2.666667 0.002154 0.001723 0.000000 0.009775 2.700000 0.002154 0.001745 0.000000 0.009775 2.733333 0.002154 0.001767 0.000000 0.009775 2.766667 0.002154 0.001788 0.000000 0.009775 2.800000 0.002154 0.001810 0.000000 0.009775 2.833333 0.002154 0.001831 0.000000 0.009775 2.866667 0.002154 0.001853 0.000000 0.009775 2.900000 0.002154 0.001874 0.000000 0.009775 2.933333 0.002154 0.001896 0.000000 0.009775 2.966667 0.002154 0.001917 0.000000 0.009775 3.000000 0.002154 0.001939 0.000000 0.009775 3.033333 0.002154 0.002011 0.000000 0.009775 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 SUM PERLND 1 999 EXTNL PREC WDM 2 PREC ENGL 1 SUM 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 0 1 1 1 WDM 1001 FLOW ENGL REPL RCHRES 1 HYDR 0 2 1 1 WDM 1002 FLOW ENGL REPL RCHRES 1 HYDR STAGE 1 1 1 WDM 1003 STAG ENGL REPL COPY 1 OUTPUT MEAN 1 1 12.1 WDM 701 FLOW ENGL REPL COPY 501 OUTPUT MEAN 1 1 12.1 WDM 801 FLOW ENGL REPL END EXT TARGETS MASS -LINK <Volume> <-Grp> <Name> MASS -LINK IMPLND IWATER END MASS -LINK <-Member-><--Mult--> <Name> # #<-factor-> 5 SURO 0.083333 5 MASS -LINK 15 IMPLND IWATER SURO END MASS -LINK 15 MASS -LINK 17 RCHRES OFLOW OVOL END MASS -LINK 17 END MASS -LINK END RUN <Target> <Name> RCHRES 0.083333 COPY COPY <-Grp> <-Member->*** <Name> # #*** INFLOW IVOL INPUT MEAN INPUT MEAN 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 28 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 29 Predeveloped HSPF Message File 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 30 Mitigated HSPF Message File ERROR/WARNING ID: 341 6 DATE/TIME: 1958/ 5/31 19: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 84.463 87.599 148.98 ERROR/WARNING ID: 341 5 DATE/TIME: 1958/ 5/31 19: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -3.860E+03 20.571 2.0571E+01 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1958/ 5/31 20: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 8.4463E+01 87.599 144.00 ERROR/WARNING ID: 341 5 DATE/TIME: 1958/ 5/31 20: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -3.562E+03 18.984 1.8984E+01 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1958/ 5/31 21: 0 RCHRES: 1 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 31 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 8.4463E+01 87.599 120.29 ERROR/WARNING ID: 341 5 DATE/TIME: 1958/ 5/31 21: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -2.144E+03 11.425 1.1425E+01 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1958/ 5/31 22: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 8.4463E+01 87.599 93.239 ERROR/WARNING ID: 341 5 DATE/TIME: 1958/ 5/31 22: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66-525.11 2.7983 2.7983 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1960/10/23 10: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 84.463 87.599 1.1326E+02 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 32 ERROR/WARNING ID: 341 5 DATE/TIME: 1960/10/23 10: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -1.723E+03 9.1831 9.1830E+00 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1960/10/23 11: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 8.4463E+01 87.599 167.85 ERROR/WARNING ID: 341 5 DATE/TIME: 1960/10/23 11: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -4.989E+03 26.587 2.6587E+01 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1960/10/23 12: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 8.4463E+01 87.599 180.98 ERROR/WARNING ID: 341 5 DATE/TIME: 1960/10/23 12: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 33 Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -5.775E+03 30.774 3.0774E+01 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1960/10/23 13: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 8.4463E+01 87.599 162.21 ERROR/WARNING ID: 341 5 DATE/TIME: 1960/10/23 13: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -4.652E+03 24.790 2.4790E+01 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1960/10/23 14: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 8.4463E+01 87.599 134.74 ERROR/WARNING ID: 341 5 DATE/TIME: 1960/10/23 14: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -3.008E+03 16.031 1.6031E+01 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1960/10/23 15: 0 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 34 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 8.4463E+01 87.599 104.16 ERROR/WARNING ID: 341 5 DATE/TIME: 1960/10/23 15: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -1.179E+03 6.2816 6.2816E+00 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1967/ 9/10 15: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 8.4463E+01 87.599 114.95 ERROR/WARNING ID: 341 5 DATE/TIME: 1967/ 9/10 15: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -1.824E+03 9.7210 9.7210E+00 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1967/ 9/10 16: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 35 NROWS V1 V2 VOL 92 8.4463E+01 87.599 121.40 ERROR/WARNING ID: 341 5 DATE/TIME: 1967/ 9/10 16: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -2.210E+03 11.778 1.1778E+01 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1967/ 9/10 17: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 8.4463E+01 87.599 99.817 ERROR/WARNING ID: 341 5 DATE/TIME: 1967/ 9/10 17: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66-918.70 4.8956 4.8956 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1972/ 9/22 21: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 84.463 87.599 125.97 ERROR/WARNING ID: 341 5 DATE/TIME: 1972/ 9/22 21: 0 RCHRES: 1 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 36 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -2.484E+03 13.235 1.3235E+01 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1972/ 9/22 22: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 8.4463E+01 87.599 1.1436E+02 ERROR/WARNING ID: 341 5 DATE/TIME: 1972/ 9/22 22: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -1.789E+03 9.5325 9.5325E+00 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1972/ 9/22 23: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 8.4463E+01 87.599 8.7988E+01 ERROR/WARNING ID: 341 5 DATE/TIME: 1972/ 9/22 23: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66-210.90 1.1239 1.1239 2 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 37 ERROR/WARNING ID: 341 6 DATE/TIME: 1978/11/ 3 22: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 84.463 87.599 102.29 ERROR/WARNING ID: 341 5 DATE/TIME: 1978/11/ 3 22: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -1.066E+03 5.6831 5.6831E+00 2 ERROR/WARNING ID: 341 6 DATE/TIME: 1978/11/ 3 23: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 8.4463E+01 87.599 97.995 ERROR/WARNING ID: 341 5 DATE/TIME: 1978/11/ 3 23: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66-809.67 4.3146 4.3146E+00 2 ERROR/WARNING ID: 341 6 DATE/TIME: 2004/ 8/ 6 16: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 38 simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 8.4463E+01 87.599 102.33 ERROR/WARNING ID: 341 5 DATE/TIME: 2004/ 8/ 6 16: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66 -1.069E+03 5.6976 5.6976 2 ERROR/WARNING ID: 341 6 DATE/TIME: 2004/ 8/ 6 17: 0 RCHRES: 1 The volume of water in this reach/mixed reservoir is greater than the value in the "volume" column of the last row of RCHTAB(). To continue the simulation the table has been extrapolated, based on information contained in the last two rows. This will usually result in some loss of accuracy. If depth is being calculated it will also cause an error condition. Relevant data are: NROWS V1 V2 VOL 92 84.463 87.599 93.825 The count for the WARNING printed above has reached its maximum. If the condition is encountered again the message will not be repeated. ERROR/WARNING ID: 341 5 DATE/TIME: 2004/ 8/ 6 17: 0 RCHRES: 1 Calculation of relative depth, using Newton's method of successive approximations, converged to an invalid value (not in range 0.0 to 1.0). Probably ftable was extrapolated. If extrapolation was small, no problem. Remedy; extend ftable. Relevant data are: A B C RDEP1 RDEP2 COUNT 0.0000E+00 187.66-560.15 2.9850 2.9850E+00 2 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 39 Disclaimer Legal Notice This program and accompanying documentation are provided 'as -is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright © by: Clear Creek Solutions, Inc. 2005-2021; All Rights Reserved. Clear Creek Solutions, Inc. 6200 Capitol Blvd. Ste F Olympia, WA. 98501 Toll Free 1(866)943-0304 Local (360)943-0304 www.clearcreeksolutions.com 23135 75th PI W - Lot 2 1/27/2021 3:57:06 PM Page 40 Trang Short Plat -Technical Information Report Appendix C Civil Plan Set The Concept Group Appendices 0 T 0 I cn I 0 ry ry w n CD 0 m / 0 0 0 Q i 0 n O Cn w Q Ln Ln N I 0 rY c 0 m NW 1/4, SEC. 32, T. 27 N., R. 4 E., W.M. A 9 Nk REFERENCE SHEET SHEET NO. 1 C1 OF 4 SHEETS ,-'INSTALL CONSTRUCTION ENTRANCE pNP Lij " g8' PER DETAIL ON SHEET EC2 IC9/ x Z O O I = /xCD / M 1 MAILBOX ASPHALT DRIVEWAY \ N 0 P ` _ --� - N8902854"E 108.29' �' x l - - - - - - - - - - - - - - - LU - - - - - - - - --1 - - - ' 108 9' c� 2 x r i O NP 4 O x M 1 , 306 o 1 o 0) N Q pNP W U G a a a a a a a a a 1 � `V , , pNP , a a a a a a a a a ,� x N 0 0 N 20ROW G // W o a a a o a a , GCo co a x 20RO G IM=307.15' G IE=302.85'(MID) , ° x DRIVE LOT'2 / . `L , `�' `� � `L � ' ASPHALT DRIVE CONC. GARAGE pNP N �/ �+/� RIM=296.10' ' 1 ; F.F.304.51' � `� �' ' (8,468 SO. FT� EX. TREE IE=290.60'(MID) ° l 6 TO BE REMOVED (TYP) _30 MAILBOX W W , O a / H. A W = x pF WASFj W WM ' �O O /�I�i W 1 ----' a x wI ./ oa� o 0 / z-10-2 zl - ` 42815 SS SS x ADO ��'GI STER�'� SS SS SS :. �' / ��S Gt� SS SS �� '6 x SIONAL E� \41DECID. \j,- ° l QJ 1 13� o r CONC. i ' fa W / U A x � 23135 75TH PLACE W 1 STORY HOME 6 a � CD F.F.305.26' �l% ,2� A z / U ru DECID. ,° o ' 00 C � co ' �� ° ° 20�0 oo 1E�°r ° ° _ R a / o N o ° 0,08„E 114.11 v o al n cn H �n 54 o — N83 1 CLEARING LIMIT N83°10'08"E 89 _ — — �° ,— 0 8,468 SF = 0.19 ACRE) / I/ w ' a TBM=3 4.79' V / �/ < C) Z Z STOCK PILE' co/rq 2 2 INSTALL SILT FENCE (TYP) INSTALL PLASTIC COVER re =2 5.47' uj 2 /x CO o Z Z a a PER DETAIL ON SHEET EC2 PER DETAIL ON SHEET EC2 CD � �S"E 1 ' �a �/N83°ti00 SOIL AMENDMENT AREA o �� O SEE NOTE 2 x o CABLE 00 TELEPHON _ - - - - " / m U z _ O � m / ( z Y x _ I 0 0 U 0- o D o / x FH 1 D — _ _— - o c I a co U U) LU 0 z 0 cn w NjnTFS- 1. INSTALL AND MAINTAIN ALL TESC MEASURES ACCORDING TO APPROVED PLANS, CITY OF EDMONDS STANDARD DETAILS. CONTRACTOR IS RESPONSIBLE TO MAINTAIN, REVISE AND / OR ADJUST ESC MEASURES AS NEEDED THROUGHOUT CONSTRUCTION AND UNTIL PERMANENT STABILIZATION IS IMPLEMENTED. 2. ALL DISTURBED AREAS TO BE COMPOST AMENDED PER 2014 SWMMWW BMP T5.13. SEE DETAIL ON SHEET EC2 Know what's below. Cal before you dig. ME HORIZONTAL GRAPHIC SCALEUj 10 5 0 5 10 Q 0 1 inch = 10 ft. p z 0 T O J CD z 0 T J N U I I 0 w w w 0 z 0 J m co C L 0 0 Q 0 n L 0 U) o� 0 w U Q J w Ln r- Ln N I 0 r ry 1-1 CD 0 w c 0 0- I N 0 N N O n N w _LS A TH IN DE FULL WIDTH GRESS/EGRESS DETAIL NOTES: THE MINIMUM LENGTH SHALL BE EXTENDED AS NECESSARY TO ENSURE MATERIAL IS NOT TRACKED OFF SITE AND/OR INTO THE PUBLIC RIGHT—OF—WAY. a2 ATB DRIVEWAY RAMP AND/OR SITE ACCESS ROAD 15' WIDE MIN, SEE TABLE BELOW FOR REQUIRED LENGTH. NOTES: 1. SURFACE WATER — ALL SURFACE WATER FLOWING OR DIVERTED TOWARD CONSTRUCTION ENTRANCES SHALL BE PIPED ACROSS THE ENTRANCE. IF PIPING IS IMPRACTICAL, A MOUNTABLE BERM WITH 5:1 SLOPES WILL BE PERMTTT'ED. 2. MAINTENANCE — THE ENTRANCE SHALL BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING OR FLOWING OF SEDIMENT OFF SITE AND/OR ONTO PUBLIC RIGHT—OF—WAY. THIS MAY REQUIRE PERIODIC TOP DRESSING WITH ADDITIONAL QUARRY SPALLS AS CONDITIONS DEMAND AND REPAIR AND/OR CLEANOUT OF ANY MEASURES USED TO TRAP SEDIMENT, ALL SEDIMENT SPILLED, DROPPED, WASHED OR TRACKED OFF SITE AND/OR ONTO PUBLIC RIGHT—OF—WAY MUST BE REMOVED IMMEDIATELY. 3. WHEELS SHALL BE CLEANED TO REMOVE SEDIMENT PRIOR TO LEAVING THE SITE. WHEN WASHING IS USED, IT SHALL BE DONE ON AN AREA STABILIZED WITH QUARRY SPALLS AND WHICH DRAINS INTO AN APPROVED SEDIMENT TRAPPING DEVICE. 4. INSPECTION AND NEEDED MAINTENANCE SHALL BE PROVIDED AFTER EACH RAIN. PROJECT SIZE MIN LENGTH OF (FEET) QUARRY SPALLS* [ 1/4 ACRE 30 [ 1 ACRE 50 [ 3 ACRE 100 3 ACRE 100 + PROVIDE ATB OR ASPHALT TRANSITION WHERE FRONTAGE ROAD IS AN ARTERIAL. LENGTH TO BE DETERMINED BY CITY INSPECTOR. CITY OF EDMONDS PUBLIC WORKS DEPARTMENT CITY INSPECTION REQUIRED ON ALL EROSION CONTROL METHODS BEFORE OTHER WORK CAN BEGIN STABILIZED CONSTRUCTION ENTRANCE APPROVED BY: R. ENGLISH REVISION DATE JANUARY 2018 STAN DAR D D ETAI L ER-901 2' x 2' WOOD/STEEL FILTER FABRIC SECURED TO 2" x 2' 14 GA WIRE FABRIC EQUAL NATIVE BACKFILL MATERIAL u c 1►[*111�� 8" FILTER FABRIC MATERIAL IN CONTINOUS ROLLS USE STAPLES OR WIRE RINGS TO ATTACH FABRIC TO WIRE 2" x 2" W000/STEEL POSTS 1. CONTRACTOR/DEVELOPER SHALL MAINTAIN AND ENSURE PROPER EROSION CONTROL THROUGHOUT PROJECT. 21 SILT FENCE TO BE PLACED DOWNSLOPE OF CONSTRUCTION ACTIVITY. CITY OF EDMONDS PUBLIC WORKS DEPARTMENT CITY INSPECTION REQUIRED ON ALL EROSION CONTROL METHODS BEFORE OTHER WORK CAN BEGIN FILTER FABRIC FENCE FILTRATION SYSTEMS APPROVED BY: R. ENGLISH REVISION DATE JANUARY 2018 STANDARD D ETAI L ER-900 Anchor in 6" x 6" min. trench and staple at 12" intervals Min. 2" overlap Min. 6" overlap Staple overlaps max. 5" spacing I I I I I I i i Bring material down to a level area, turn the end under 4" and staple at 12" intervals Notes: 1. Slope surface shall be smooth before placement for proper soil contact. 2. Stapling pattern as per manufacturer's recommendations. 3. Do not stretch blanketsfmattings tight - allow the rolls to mold to any irregularities. 4. For slopes less than 3H:1V, rolls may be placed in horizontal strips. 5. If there is a berm at the top of the slope, anchor upslope of the berm. 6. Lime, fertilize, and seed before installation. Planting of shrubs, trees, etc. should occur after installation. NOT TO SCALE Figure II-4.1.4 Slope Installation DEPARTMENT OF Revised June2015 ECOLOGY Please see http.l)Www.ecy.wa.gov1copyright.htm1 for copyright notice including permissions, State of VVashington limitation of liability, and disclaimer. REFERENCE SHEET SHEET NO. 2 C2OF L 4 SHEETS W ��0 VJ W / 00 Q Z U) �Nz 0 U 1 C� N p W 1--1--1 d 42815 os� ��GI STEg�'� �s8IONAL ro U) c 0 U C L Qi LU UNDISTURBED PLANTS UNDISTURBED TURF (LAWN) % W U 03 (SEE NOTE 1) AREAS (SEE NOTE 1) UNDISTURBED � 00 00 �� UNDISTURBED P11ltrll!11�lf61'Pl?T' 0' TURF/LAWN/LANDSCAPE NATIVE VEGETATION s v 0 N CD v UNDISTURBED NATIVE SOIL UNDISTURBED NATIVE SOIL C3 I.— 1I T N rAw 2" ORGANIC MULCH 3" OF COMPOST INCORPORATED INTO S" OF SITE SOIL (TOTAL AMENDED DEPTH OF 9.5", FOR A SETTLED DEPTH OF B") SUBSOIL SCARIFIED 4' BELOW COMPOST AMENDED LAYER (12' BELOW SOIL SURFACE) 2" ORGANIC MULCH 6" IMPORTED TOPSOIL MIX (COMPACTED DEPTH) SUBSOIL IS SCARIFIED 6' BELOW IMPORTED TOPSOIL MIX OPTION 1 — NO DISTURBANCE PLANTING BEDS TURF (LAWN) AREAS 0" 8" GRASS: SEED OR SOD 1.75" OF COMPOST INCORPORATED NTO 6.25" OF SITE SOIL (TOTAL AMENDED DEPTH OF 9.5% FOR A SETTLED DEPTH OF 8') SUBSOIL SCARIFIED 4' BELOW COMPOST AMENDED LAYER (12' BELOW SOIL SURFACE) OPTION 2 — AMEND IN PLACE OR STOCKPILE AND AMEND GENERAL NOTES, PLANTING BEDS TURF (LAWN) AREAS 1. AREAS OF NO DISTURBANCE SHALNG BE FENCED AND GRASS: SEED VEGEfTATION AND SOIL SHALLBE OR SOD PROTECTED FROM CONSTRUCTION — — = IMPACTS. fi" IMPORTED 2. TO MEASURE SETTLED DEPTH, WATER SOIL SUFFICIENTLY TO — TOPSOIL MIX FULLY SATURATE WITHOUT (COMPACTED CAUSING EROSION. 5" I I DEPTH) _ _ _I 3. COMPOST SHALL MEET SPEC. REQUIREMENTS IN THE 2017 1- i1— L EDMONDS STORMWATER ALL SUBSO]L IS ADDENDUM (CHECKLIST 7). 12' OPTION 3 — IMPORT TOPSOIL CITY OF EDMONDS PUBLIC WORKS DEPARTMENT SCARIFIED 6 BELOW 4. COMPACTION OF TOPSOIL (WHERE IMPORTED REQUIRED) TO BE TO 85% (MAX) TOPSOIL MIX OF THE MAXIMUM DRY DENSITY PER MODIFIED PROCTOR TEST (ASTM D1557). REVISION DATE POST CONSTRUCTION SOIL DECEMBER 2017 QUALITY AND DEPTH APPROVED' HY: STANDARD DETAIL SD-642 W --I H- N 0 o � O Z Z Q 2 Q 2 N T2 i T2 i O O co m m O TM a: LU CO Z o CD z Y U LU O LU 2 tY Z O 1— U U) LU Z O U) LU IY R n PF P O Z 0 T 0 J O z 0 U I cn I 0 ry ry W n CD z 0 J m 0 0 0 Q 0 w El- n Fl- In N I 0 i c 0 i 0 n E N 0 �i I N 0 N 0 T NW 114, SEC. 32, T. 27 N., R. 4 E., W.M. EX. OVERHEAD POWER LINE / I TO BE REMOVED oNP ~ w '2 CO UNDERGROUND Nam, I w FOOTING DRAIN ELECTRICAL o PO ER OLE x / Q I E=295.50 ONP / w N89°2854"E 108.29' ' � x l I WOOD FENCE -- --- — -- — fi— --- x I ''11` \ DSO_ RD RD - - RD RD S 0 FTDR FTDR- FTDR FTDR FTDR .S� BSBL 1 i a - o 1 1 I P - x N 1 I 0 - I - � X 1 1 1 I � - I - x u.: / - N 1 I P / I N I x 0 1 - / I 1 I I I - I / / I I .f I a x ARA E=2 7. l G G 9 00 1 1 - W . �.:'. -/ _ T MATCH S W U H XI TING 1 .. ...:.:.... I ROOF P 1 N 1 I , 0 - - x 1 I 1 I I I I I - G- 6. OVERHANG ~' � �• I C 1 I - I T.: / 1 I L T O 2 _ I NP m E. Yn I -- ;E o o _a=2.y ::.:...:...... 5 PVT. SE ER 51' n � (8,468 SG. FT) I Aso 0o .MIr�,� /EASE E / � 1 11 - I W ti I / :..,:.. It EX. ES WEIR N o CIS, PROPOSED SFR TO BE AB DON D & CAPPED AT PRO RTY INE 1 = FFE=298.00 9 o EX. 6' S LATERAL x / SEE SE ER LATERA 'NO E 4" SSCO 11 J / ; � i x ;, I E=294.00�7�> �� /S —F— SS — SS. <:' a SSCb / O u , I ) / SSCO If x 1 301.00 3 I I J FTDR FTDR FTDR / DS RD RD RD I 4 x i0ss� co END6"S = / I 1 I / 7 BEGI 4" SS x x I JUT SS / I JUT SS AR/nE,S xI T 1 I ]UT 1 ---- -, ROvv SS "V v, V x U 00D FENCE 6" SSCO AR/ S / W 114.11' IE=291.90 &0 o ROW = x N83°10'08"E o --" -° x 6" SSCO � I E=296.76 m o / m m EX. 18" CI x/ jj PROVIDE 6" VERTICAL CLEARAN E SEPARATION SEWER MAIN co o TB =2. '7' BETWEEN WATER SERVICE / DR UTILITIES / / EX. 24" C NC. o / & 6" SIDE SEWER CROSSING -< EWER AIN I/ I x / ' o / / o NOTES: 1 1 INSTALL 1" WATER METER & SERVICE LINE 11 INSTALL 12 LF 6" PVC SDR 35 2.00% MIN. @ 1: 1 PER COE STD DETAIL WA-130 ON SHEET DT3 \ BY CITY OF EDMONDS O 12 ROOF / FOOTING INFILTRATION TRENCH r':.:'::f..p::'. 1 (5'W x 201 x 3'D) PER DETAIL 2 ON SHEET C4 INSTALL 150 LF 1.5" WATER SERVICE LINE INSTALL 22 LF 4" PVC SDR 35 \ FH INSTALL 42 LF 4" PVC SDR 35 SIDE SEWER STUB @ 2.00% MIN. 0 SIDE SEWER @ 2.00% MIN. WITH 4" SSCO \ ® INSTALL 98 LF 6" PVC SDR 35 14 CONSTRUCT ASPHALT DRIVEWAY APPROACH SIDE SEWER @ 7.00% (4" HMA CL %" (PG 64-22 WITH 2 LIFTS) OVER 6" CSBC \ \ O5 INSTALL 190 LF (TOTAL) 41 PVC SDR 35 ROOF DRAIN 1 © CONSTRUCT DRIVEWAY, WALKWAY, PATIO ?, I \ COLLECTOR @ 1.00% MIN. (PAVER OR PERVIOUS CONCRETE) CD 1 IUD INSTALL CB -TYPE 1 WITH SOLID LID PER DETAILS ON SHEET C4 Im RIM=296.50 I \o I � \ o IE (W, S)=294.50 \ IE (NE)=294.40 , 1 10' WIDE x 18' LONG VEGETATED 'I \ OVERFLOW FLOWPATH ` \ ® INSTALL 6 LF 4" SOLID PVC SDR 35 FOOTING DRAIN COLLECTOR @ 1.00% MIN. MAILBOV \ O9 INSTALL 10 LF 6" PVC SDR 35 SIDE SEWER STUB RIM=303.58' @ 2.00% MIN. \ 10 6" SSCO PER COE STD DETAIL SS-200 Ej\ CD 1N SHEET C4 1 ` EETO BEADEIL TERMINED IN THE FIELD LEGEND PROPERTY LINE BSBL - - - - - - RIGHT OF WAY LINE — — RIGHT OF WAY CENTERLINE ADJACENT PROPERTY LINE - — — — — — — — — — — — - EASEMENT LINE ROOF OVERHANG LINE W PROPOSED WATER SERVICE LINE SD PROPOSED STORM DRAIN LINE SS PROPOSED SIDE SEWER LINE JUT wT PROPOSED JOINT USE TRENCH (CABLE & TELEPHONE) ALL UTILITY EASEMENTS SHOWN ON THIS PLAN IS UNDER SNOHOMISH COUNTY REC. #202012215009 REFERENCE SHEET SHEET NO. 3 C3 OF 4 SHEETS W U z 2: (0 W Q W L U � Q I..L T i - (V n W / W ZC) ti Q U D:f 0-) Z N 0 Q N W NMI �Z N _ Q w O J A 42815 4 \O� I STER�'� cv�' �SSIONAL � � In +- c 0 U 0) c Q) c w > N U O z�00 1 � � N 5>aN LL > N > 0 CD I L 1 r J Lfi cn H ,--� I N �� QQ coo M I N ASPHALT PAVEMENT e Dn > ° ° CONCRETE PAVEMENT ° O z 00 m PERMEABLE PAVEMENT m 0 z .. ......,....:... (PAVER & PERVIOUS CONCRETE) z Y cn � LU � w 0 0 = U 0- z O U cn w 0 z O w ® 0 LU HORIZONTAL GRAPHIC SCALE Know what's below. 10 5 0 5 10 0 Call before you dig. 1 inch = 10 ft. O z 0 ry w CD z 0 J m 0 0 0 Q U 0 Un 0 w U Q J Ln r- Ln r0 N 0 r 0 RESIDENCE 1 1 2' ' CLEANOUT (MAX) (TYP) W z z a w 0 CLEANOUT a- sn WITH 45' BEND AND CAP NOT TO EXCEED 100' BETWEEN CLEANOUTS CLEANOUT (WYE WITH CAP AND CLEANOUT COVER) AND CONCRETE LEVELING COLLAR 12" t r FINISHED GRADE "—WATER TIGHT CAP 45' RISER 45' 4" OR 6" SIDE SEWER GENERAL CLEANOUT DETAIL 12' LOCKING COVER 3 z Mm SEE NOTE 3 LEVELING COLLAR Wp o SEE NOTE 4 W a 0 r ASPHALT SURFACE 12" t 1 FOOT TANG 12' PVC SLEEVE 6' RISER \-END OF PIPE GRIPPER PLUG (CHERNE 270261 OR APPROVED EQUAL) TYPICAL CLEANOUT j g\ z Of p 12" LOCKING COVER SEE NOTE 3 END OF PIPER GRIPPER PLUG Q (CHERNE 27061 OR APPROVED EQUAL) � U LEVELING COLLAR - SEE NOTE 4 12" PVC SLEEVE-' 6" RISER WYE AND 4-5' BEND r 6" CITY STUB 4 4" OR 6" 51dE SEWER CLEANOUT DETAIL AT PROPERTY UNE%CITY EASEMENT NOTES: 1. SEWER PIPE SHALL BE SDR--35 AND JOINTS SHALL BE GASKETED. 2. PIPE SLOPE TO BE 2% MIN AND UP TO 50% MAX. 3. SEWER CLEANOUT COVER TO BE EAST JORDAN IRON WORKS PRODUCT #00366102 STAR PIPE COSP4aL OR APPROVED EQUAL. 4. LEVELING COLLAR SHALL BE CONSTRUCTED AS FOLLOWS: ■ IN ROADWAYS PER COE STD DWG GU-424 • IN SIDEWALK/LANDSCAPED AREAS, EITHER 24"x24"x6" DEEP CONCRETE COLLAR OR 24" DIAMETER x 6" DEEP CONCRETE COLLAR --'� CITY OF EDMONDS SEWER CLEANOUT DETAILS PUBLIC WORKS DEPARTMENT 1g9 rr DEPARTMENT OF ECOLOGY State of VVashington APPROVED BY: R. ENGLISH ncTneQ lgregate in openings Concrete paver REVISION DATE JANUARY 2018 STANDARD D ETAI L SS-200 1" washed sand or 0.5" washed crushed stone for base material 6" open -graded base material, Y4" - 2" crushed -washed Subgrade, determine compaction based on design requirements 1►[��r��YHGI�� Figure V-5.3.5 Example of a Permeable Paver Section Revised January 2016 Please see htfp./lwww.ecy.wa.goVlcopyiight.htmffor copyright notice including permissions, limitation of liability, and disclaimer. 4" 000 (MIN) ❑ 4 p k. (MIN) 6" (MIN) 1' (MIN) ABOVE SEASONAL HIGH GROUNDWATER TABLE ,�!\ OR HYDRAULICALLY RESTRICTIVE LAYER PERVIOUS CONCRETE, SEE NOTE 1 PERMEABLE BALLAST, SEE NOTES 2 & 3 RUNOFF TREATMENT LAYER (IF REQUIRED PER EDMONDS STORMWATER CODE), SEE NOTE 4 SUBGRADE, SEE NOTE 5 GENERAL NOTES: 1. REFER TO THE 2017 CITY OF EDMONDS STORMWATER ADDENDUM FOR SETBACK (CHECKLIST 11) AND INFEASIBILITY REQUIREMENTS. 2. THE MINIMUM THICKNESS SHOWN ABOVE MAY NOT BE SUFFICIENT FOR ALL APPLICATIONS. A PROJECT SPECIFIC PAVEMENT DESIGN SHALL BE PREPARED BY A PROFESSIONAL ENGINEER LICENSED IN THE STATE OF WASHINGTON IN CIVIL ENGINEERING TO: 2.1. SUPPORT THE ANTICIPATED LOADING (E.G. PAVEMENT DESIGN LIFE, INITIAL AND TERMINAL SERVICEABILITY, RELIABILITY, ETC.) AND 2.2. TO SATISFY THE HYDROLOGIC REQUIREMENTS OF THE CITY OF EDMONDS STORMWATER CODE (I.E., CODE MAY WARRANT A THICKER PAVEMENT SECTION THAN THE MINIMUM STRUCTURAL SECTION REQUIRED). 3. FOR SUBGRADE SLOPES 3% OR GREATER, SUBSURFACE CHECK DAMS OR OTHER METHODS TO PROMOTE SUBSURFACE PONDING ARE REQUIRED. 4. GEOTEXTILE SHALL NOT BE USED IN PAVEMENT SECTION UNLESS REQUIRED BY GEOTECHNICAL ENGINEER. IF REQUIRED, GEOTEXTILE SHALL CONFORM TO WSDOT 9.33.2(1) GEOTEXTILE FOR SEPARATION, WOVEN TYPE. 5. REFER TO WSDOT LOCAL AGENCY GSPs DIVISIONS 2-9 FOR APWA GSPs. NOTLS: 1. PERVIOUS CONCRETE SHALL CONFORM TO REQUIREMENTS OF APWA GSP 5-065A. SURFACE SLOPE SHALL BE BETWEEN 0.5% AND 10%, 2. PERMEABLE BALLAST SHALL CONFORM TO THE REQUIREMENTS OF APWA GSP 4-04.2(9-03.9(2)).OPT1. 3. PAVEMENT BASE SHALL BE INSTALLED PER APWA GSP 4-04.3(5) SHAPING AND COMPACTION, 4. RUNOFF TREATMENT LAYER SHALL MEET THE REQUIREMENTS OF 2017 CITY OF EDMONDS STORMWATER ADDENDUM. 5. PREPARE AND PROTECT SUBGRADE PER APWA GSP 2-06.3(3) SUBGRADE FOR PERMEABLE PAVEMENTS. ft CITY OF EDMONDS PUBLIC WORKS - DEPARTMENT Fst. 1894 TYPICAL PERVIOUS CONCRETE PAVEMENT APPROVED BY- R. ENGLISH REVISION DATE DECEMBER 2017 STAND ARD DETAIL SD-622 �L 20' 6" RIGID PERFORATED PIPE @ 0.0% A INFILTRATION TRENCH A� 5' MIN. 6" SOLID ADS N 12 @ 0.00% PLAN VIEW 5' MIN. CATCH BASIN TYPE 1 NTS ROOF DRAIN ROOF DOWN SPOUT WITH WASHED ROCK 3/4" - 1 1/2" OVERFLOW WYE AND SPLASH BLOCK 6" RIGID PERFORATED PIPE @ 0.0% EXISTING GROUND FINE MESH SCREEN ELEVATION VIEW NTS DRIVEWAY SECTION I E=295.00 I E=294.00 N FINISH GROUND ELEV=297.00 CO o W �y > II ROOF DRAIN 4" SOLID PIPE WRAP WASHED ROCK ENTIRELY WITH FILTER FABRIC (TYP) 6" RIGID PERFORATED PVC PIPE LAID LEVEL (TYP) 51 WASHED ROCK 3/4" - 1 1/2" (TYP) PROPOSED SFR INFILTRATION TRENCH DETAIL n SCALE: NONE REFERENCE SHEET NO. C4 LU U Z W N M C) UJI > U-1 Q V Z 07 Q ti 0 (g) Z CN O CIO G CV CV 0 LLJ O J SHEET 4 OF 4 SHEETS 0 42815 o,�, I STEg�'� L` IONAL E��1 Ln C ro Ln 0 U 0) L .0) C LU > U zru ra 00 _1 -1 N �M E a°' LL > O0 N "a ro CD ��N L1 JLn (n Co j Q H W 0 W H ,-� Uj N 0 o U) o Cn Q Q O O Z co 00 co COO T.-o IX :z m Z o Y z 75 LU 0 = U u� 0- Z O H U C0 W z O cn > LU n r