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Home My WebLink AboutTIRTCE 548 Front Street South, Issaquah, WA 98027 Renton Restaurant Addition 17630 108th Avenue SE Renton, WA Technical Information Report December 2016 Revised December 11, 2016 Prepared by Shailesh Tatu, PE, PM, M. Tech. Tatu Consulting Engineers 548 Front Street South Suite 100 Issaquah, WA 98027 TCE Renton Restaurant Addition Page 2 of 13 Table of Contents Section 1 – Project Overview Section 2 – Conditions and Requirements Summary Section 3 – Off-site Analysis Section 4 – Flow Control and Water Quality Facility Analysis and Design Section 5 – Conveyance System Analysis and Design Section 6 – Special Reports and Studies Section 7 – Other Permits Section 8 – ESC Analysis and Design Section 9 – Bond Quantities Section 10 – Operations and Maintenance Manual Appendix 1 TIR Worksheet Appendix 2 Vicinity Map Appendix 3 NRCS Soils Map Appendix 4 Existing Site Conditions Appendix 5 Developed Site Conditions Appendix 6 Contributing Basins Maps Appendix 7A WWHM 2012, Detention Vault Printout Appendix 7B WWHM 2012, Water Quality Flow Printout Appendix 7C WWHM 2012 Pre and post Development Flows Appendix 8 Bond Quantities Appendix 9 Operation & Maintenance Manual TCE Renton Restaurant Addition Page 3 of 13 FIGURE 1 - TECHNICAL INFORMATION REPORT (TIR) WORKSHEET PART 1 PROJECT OWNER AND PROJECT ENGINEER PART 2 PROJECT LOCATION AND DESCRIPTION Project Owner: Wen Tian Address 2605 82nd Avenue NE, Medina, WA Contact Telephone 425-615-6108 Project Engineer: Shailesh Tatu, PE Project Name: Renton Restaurant Addition Location: 17630 108th Ave SE, Renton, WA Township: 23N Range: 05E Section: NE ¼ 32 PART 3 TYPE OF PERMIT APPLICATION PART 4 OTHER REVIEWS AND PERMITS Subdivision Short Plat Grading Commercial Other DFW HPA COE 404 DOE Dam Safety FEMA Floodplain COE Wetlands Shoreline Management Rockery Structural Vaults Other PART 5 SITE COMMUNITY AND DRAINAGE BASIN Community Soos Creek Drainage Basin Black River PART 6 SITE CHARACTERISTICS River ------------------------------------------------------------- Stream Critical Stream Reach Depressions/Swales Lake ------------------------------------------------------------ Steep Slopes --------------------------------------------------- Floodplain ---------------------------------------------------------------- Wetlands Category II buffer Seeps/Springs High Groundwater Table Groundwater Recharge Other --------------------------------------------------------------------- PART 7 SOILS Soil Type Slopes Erosion Potential Erosive Velocities Alderwood AgB 0 to 6 % Slight 3 FPS Additional Sheets Attached TCE Renton Restaurant Addition Page 4 of 13 FIGURE 1 - TECHNICAL INFORMATION REPORT (TIR) WORKSHEET PART 8 DEVELOPMENT LIMITATIONS REFERENCE LIMITATION/SITE CONSTRAINT Additional Sheets Attached PART 9 ESC REQUIREMENTS MINIMUM ESC REQUIREMENTS DURING CONSTRUCTION Sedimentation Facilities Stabilized Construction Entrance Perimeter Runoff Control Clearing & Grading Restrictions Cover Practices Construction Sequence Other Tree Protection MINIMUM ESC REQUIREMENTS AFTER CONSTRUCTION Stabilize Exposed Surface Remove and Restore Temporary ESC Facilities Clean and Remove All Silt & Debris Ensure Operation of Permanent Facilities Flag Limits of SAO and Open Space Preservation Areas Other PART 10 SURFACE WATER SYSTEM Grass Lined Channel Pipe System Open Channel Dry Pond Wet Pond Tank Vault Energy Dissipater Wetland Stream Infiltration Depression Flow Dispersal Waiver Regional Detention Brief Description of System Operation: Surface flow will continue to be collected in existing catch basins and pipe then Conveyed to an existing detention tank. Facility Related Site Limitations Reference Facility Limitation PART 11 STRUCTURAL ANALYSIS PART 12 EASEMENTS/TRACTS Cast in Place Vault Retaining Wall Rockery > 4' High Structural on Steep Slope Retaining Wall Drainage Easement Access Easement Native Growth Protection Easement Tract Other Part 13 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 attachments. To the best of my knowledge the information provided here is accurate. December 11, 2016 Signed/Date TCE Renton Restaurant Addition Page 5 of 13 Section 1 – Project Overview The project consists of remodel of and addition to an existing restaurant located at 17930 108th Avenue SE. The existing KC parcel (#252604-9019) is approximately 37,197 square feet (0.85 acres) in size and contains an existing restaurant building with about 5,000 square feet roof along with walkways, asphalt pavement and parking. Please refer to Existing Conditions included in the Appendix. The site is considered flat with average gentle slopes (about 3%). The parcel is zoned C, and is located in the NE Quarter of Section 31, Township 23 N, Range 5 E, W.M. King County, Washington. The project site location is shown in the vicinity map. The addition around the existing restaurant will make the roof area about 9,000 square feet. The outer edges of the asphalt pavement will be expanded. All of the asphalt paving would be permeable asphalt, existing and proposed. An existing drainage system consisting of catch basins and drains will be modified to allow pavement runoff sheet flow to a detention vault via a water quality vault and by overflow from a flow splitter. The roof runoff would be conveyed to the detention vault by means of roof drains, bypassing the water quality vault. An existing detention tank will be removed. The proposed vaults will receive the developed runoff and treat it for both flow control and water quality before controlled discharge to the existing storm sewer system in 108th Avenue SE right of way. Existing trees along the east property line will be preserved and a couple of interior ornamental trees will be relocated on site. Existing trees along the west property line will be preserved. The Existing soils on the site are mapped by the NRCS as being type AgB – Alderwood Gravelly Sandy Loam. Please refer to the NRCS Soils Map included in the Appendix. The Hydrologic Group of AgB is B. However, these soils are underlain with relatively less permeable soils, similar to hydrologic group C. Therefore, hydrologic group C is used in WWHM 2012 analysis. TCE Renton Restaurant Addition Page 6 of 13 Section 2 – Conditions and Requirements Summary The following summary describes how this project will meet the eight “Core Requirements” and the “Special Requirements” that apply: Core Requirements 1. Discharge at the natural location: This site currently sheet flows to the west and collects in existing catch basins. From these catch basins the surface water is conveyed by 8” drains to an existing detention tank located along the west property line. The discharge from the detention tank is to the City drainage system located within 108th Avenue SE right of way. The proposed drainage system for this project will collect the surface water runoff at the west edge of the parking, treated in the new vaults, and then continue to discharge to the same existing City drainage system located within 108th Avenue SE right of way. No change in the existing discharge location is proposed. 2. Off-site Analysis: A Level 1 off-site analysis was completed for this project and is included in Section 3 of this Technical Information Report. No significant downstream drainage problems were found. 3. Flow control: The proposed method of flow control is to utilize the new vaults located west of the building to provide both the flow control and water quality treatment. Please refer to Section 4 of this report. 4. Conveyance system: Flows will be conveyed by means of overland sheet flow runoff to the proposed catch basins and via 8” culverts to the treatment vaults. Discharge from the vaults will be conveyed by 12” culvert to the existing storm system within 108th Avenue SE. 5. Erosion and sedimentation control: A Temporary Erosion and Sedimentation Control plan, notes and details are included with this engineering submittal. 6. Maintenance and Operations: The proposed storm drainage collection system on the property will continue to be privately owned and maintained. The new vaults will be privately owned and maintained. Please refer to Section 10 of this report. 7. Financial guarantees and liability: The owner/contractor will be required to post construction performance and one year maintenance bonds for the redevelopment work associated with this project. A bond quantities spreadsheet for the proposed development will be prepared as required upon initial City review of the engineering plans. TCE Renton Restaurant Addition Page 7 of 13 8. Water Quality: Water quality treatment for the developed runoff is provided by the offline water quality vault that precedes the detention vault. A water quality area is proposed within the combined vault, consisting of water quality dead pool adequate in size to provide water quality treatment prior to discharge to the detention vault. Computer program WWHM2012 was utilized to split the water quality volume and flow to arrive at the require size of the water quality dead pool. Adequate dead storage is available within this water quality pool. Please see the WWHM2012 water quality printout included in the Appendix. Special Requirements 1. Other adopted area-specific requirements: Enhanced Flow Control 2. Floodplain/Floodway delineation: Not applicable. 3. Flood protection facilities: Not applicable. 4. Source controls: No storage of hazardous substances exposed to elements. 5. Oil Control: Not a high use site. TCE Renton Restaurant Addition Page 8 of 13 Section 3 – Off-site Analysis This Level 1 Downstream Analysis is submitted as required by Core Requirement #2, Section 1.2.2, of the 2009 KCSWDM. Core Requirement #2 requires a qualitative analysis of upstream and downstream drainage conditions with an initial project submittal. Task 1: Study Area Definition and Maps: See Section-1 Project Overview of this report for a detailed Study Area Definition. Task 2: Resource Review: Resources reviewed include the site survey, iMap, and King County Road Services map vault. It appears that the downstream system is a part of the 24” bypass system through the shopping center across the street from the project site. The pipe downstream is 24” CMP discharging to a 30” CMP on the south side of Carr Road. The quarter mile point appears to be at the intersection of 105th Place SE and SE Carr Road. A sensitive areas review shows no critical areas on or near the project site. There were numerous official drainage complaint records on file with King County that are surrounding this property. It appears most of these are very old complaints and have been closed for quite a while. They relate to annexation of the area and new municipal code requirements regarding water quality issues noticed during inspections by jurisdiction staff. The complaint in the subject property was closed on 9/29/04. Task 3: Field Inspection: A field observation of the site and downstream analysis were performed on March 18, 2016 and again on July 8. The weather was overcast during the first visit and clear on the second. None of the downstream system beyond the second catch basin downstream shown on the survey is visible. The pipe diameters, however, seem adequate to convey the discharge anticipated even at a 100 year storm event from the site. Task 4: Drainage System Description and Problem Descriptions: Upstream: There are no upstream drainage conditions, because the drainage system within 109th Avenue SE has its drainage system that cuts the drainage away from the site. The slope on the properties to the north and south is parallel to the project site and they do not transfer any runoff on to this project site. Downstream: TCE Renton Restaurant Addition Page 9 of 13 The downstream drainage system is the 24”concrete City drainage system in 108th Avenue SE flowing south for a distance of about 160 feet. Another 24” concrete pipe to the west conveys the drainage to the above mentioned 24” bypass system. All pipes in the bypass system are 24” CMP pipes. The final leg of the downstream system to the quarter mile point in 105th Place SE is 36” CMP. At quarter mile point the downstream connects to a 30” CMP. The downstream drainage system is substantial in size and at reasonable slopes. Please see the figure depicting the downstream system. Task 5 – Mitigation of Existing or Potential Problems: Existing capacity in the downstream system is deemed to be adequate to provide conveyance for the discharge from this project. TCE Renton Restaurant Addition Page 10 of 13 Section 4 – Proposed Site Conditions and Design Parameters Flow Control Analysis and Design In the existing conditions the flow control for this project is provided by an existing detention tank located along the west property line. This detention system will be removed and new water quality and detention vaults will be installed to receive and treat the runoff from the developed site for flow control as well as water quality. Please see sheet C-3.1 of the civil drawings. The plan, profile, and section depict the proposed water quality and detention vaults located on the west side of the building. Following is the manner in which the drainage analysis of the project site was conducted. Please see the drainage basin maps included in the Appendix. The entire site is considered forested to develop the flow series under existing condition. Although the soils are mapped as Alderwood AgB, these are underlain by soils resembling Alderwood AgC. Therefore, hydrologic group C was used in the program for analysis. In proposed conditions, the site is divided into components such as roof tops, sidewalks, and parking totaling to 0.61 acre impervious area and 0.23 acre landscaped area. WWHM2012 program was used to conduct the drainage analysis. The program controls the discharge to that required for enhanced flow control. The areas summary and the drainage basins map are included in the Appendix. The permeable pavement was considered 50% impervious. The pavements runoff sheet flows to collection catch basins at the west edge of the parking west of the building. The roof runoff is conveyed to the detention vaults by the roof drains The program calculates the volume for the storage of runoff. The proposed detention vault required is 83’ long, 23’ wide, with the storage depth of 6’. The discharge control device with three discharge orifices was chosen. The detention vault and the discharge control device have been detailed in drawings. The WWHM2012 detention vault printout is attached in the Appendix. Please see the Areas Summary on C-0 of the drawings and the one included within this report in the Appendix. TCE Renton Restaurant Addition Page 11 of 13 Water Quality Analysis and Design The water quality treatment vault that precedes the detention vault provides water quality treatment. WWHM2012 program was run to analyze the runoff from only the pavements. A water quality flow splitter was used to divert the volume and flow for the design of the water quality vault. The overflow beyond the water quality flow was conveyed directly to the detention vault, bypassing the water quality treatment vault The resulting water quality vault is about 43’ long, 10’ wide, with a depth of 6’. The wet pool storage provided in the vault is adequate to provide the required water quality treatment. The WWHM2012 water quality flow printout is included in the Appendix. TCE Renton Restaurant Addition Page 12 of 13 Section 5 – Conveyance System Analysis and Design The existing conveyance system on site is being modified to allow sheetflow of the runoff over pavement into the proposed catch basin located at the west edge of the parking lot. The developed runoff is then conveyed to the treatment vaults by means of 8” pipes. The peak rate of flow expected at the 100 year 24 hour storm event is less than 0.4 cfs. The capacity of the 8” corrugated metal pipe at 0.5% can be calculated to be 0.93 cfs. The capacity of the 12” concrete discharge pipe from the control structure at 0.3% is 2.1 cfs. Therefore in our opinion the existing conveyance system is adequate to service the proposed development too. Section 6 – Special Reports and Studies A geotechnical investigations report is attached in the Appendix, however, we decided not to use the infiltration at this time. An infiltration rate of 0.31 inch per hour was recommended. Section 7 – Other Permits City of Renton Building Permit Soos Creek Water & Sewer District water, sewer, fire, and irrigation services approval. Section 8 – ESC Analysis and Design Standard erosion and sedimentation control BMPs are proposed. Drawing sheet C-1 is dedicated to show clearing limits, construction entrance, dust control, inlet protection, matting & mulching, silt fence, and tree protection. Prior to beginning any work these BMPs will be installed and operational. Upon completion of earthwork and stabilization of worked areas, these BMPs will be removed. Section 9 – Financial Guarantees The project proposes to add new dining area around the shell of the existing building. Additional asphalt is proposed to facilitate expansion of parking on site. The work in the right of way consists of replacing the existing driveway entrance with a driveway entrance to current standards. Our understanding is that at this time the right of way will be dedicated. The work in the right of way will be limited to that associated with the installation of the new driveway entrance. The bond quantities consisting of pavements and vaults are submitted for your review. Section 10 – Operations and Maintenance Manual The operation and maintenance manual consisting of detention tank is being submitted. TCE Renton Restaurant Addition Page 13 of 13 King County Vicinity iMap Date: 1/27/2016 Notes: ±The information included on this map has been compiled by King County staff from a variety of sources and is subject to change without notice. King County makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness,or rights to the use of such information. This document is not intended for use as a survey product. King County shall not be liable for any general, special, indirect, incidental, or consequential damages including, but not limited to, lost revenues or lost profits resulting from the use or misuse of the information contained on this map. Any sale of this map or information on this map is prohibited except by written permission of King County. Site SR 167 S Carr Rd 108th Ave SE Hydrologic Soil Group—King County Area, Washington(Tenton Restaurant Addition)Natural ResourcesConservation ServiceWeb Soil SurveyNational Cooperative Soil Survey3/22/2016Page 1 of 45254780525479052548005254810525482052548305254840525478052547905254800525481052548205254830525484056056056057056058056059056060056061056062056063056064056065056056056057056058056059056060056061056062056063056064056065047° 26' 39'' N122° 11' 48'' W47° 26' 39'' N122° 11' 43'' W47° 26' 37'' N122° 11' 48'' W47° 26' 37'' N122° 11' 43'' WNMap projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 10N WGS840 20 40 80 120Feet0 5 10 20 30MetersMap Scale: 1:458 if printed on A landscape (11" x 8.5") sheet. MAP LEGENDMAP INFORMATIONArea of Interest (AOI)Area of Interest (AOI)SoilsSoil Rating PolygonsAA/DBB/DCC/DDNot rated or not availableSoil Rating LinesAA/DBB/DCC/DDNot rated or not availableSoil Rating PointsAA/DBB/DCC/DDNot rated or not availableWater FeaturesStreams and CanalsTransportationRailsInterstate HighwaysUS RoutesMajor RoadsLocal RoadsBackgroundAerial PhotographyThe 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 causemisunderstanding of the detail of mapping and accuracy of soil lineplacement. The maps do not show the small areas of contrastingsoils that could have been shown at a more detailed scale.Please rely on the bar scale on each map sheet for mapmeasurements.Source of Map: Natural Resources Conservation ServiceWeb Soil Survey URL: http://websoilsurvey.nrcs.usda.govCoordinate System: Web Mercator (EPSG:3857)Maps from the Web Soil Survey are based on the Web Mercatorprojection, which preserves direction and shape but distortsdistance and area. A projection that preserves area, such as theAlbers equal-area conic projection, should be used if more accuratecalculations of distance or area are required.This product is generated from the USDA-NRCS certified data as ofthe version date(s) listed below.Soil Survey Area: King County Area, WashingtonSurvey Area Data: Version 11, Sep 14, 2015Soil map units are labeled (as space allows) for map scales 1:50,000or larger.Date(s) aerial images were photographed: Aug 31, 2013—Oct 6,2013The orthophoto or other base map on which the soil lines werecompiled and digitized probably differs from the backgroundimagery displayed on these maps. As a result, some minor shiftingof map unit boundaries may be evident.Hydrologic Soil Group—King County Area, Washington(Tenton Restaurant Addition)Natural ResourcesConservation ServiceWeb Soil SurveyNational Cooperative Soil Survey3/22/2016Page 2 of 4 Hydrologic Soil GroupHydrologic Soil Group— Summary by Map Unit — King County Area, Washington (WA633)Map unit symbolMap unit nameRatingAcres in AOIPercent of AOIAgBAlderwood gravellysandy loam, 0 to 8percent slopesB0.785.3%AgCAlderwood gravellysandy loam, 8 to 15percent slopesB0.114.7%Totals for Area of Interest0.8100.0%DescriptionHydrologic soil groups are based on estimates of runoff potential. Soils areassigned to one of four groups according to the rate of water infiltration when thesoils are not protected by vegetation, are thoroughly wet, and receive precipitationfrom long-duration storms.The soils in the United States are assigned to four groups (A, B, C, and D) andthree dual classes (A/D, B/D, and C/D). The groups are defined as follows:Group A. Soils having a high infiltration rate (low runoff potential) when thoroughlywet. These consist mainly of deep, well drained to excessively drained sands orgravelly sands. These soils have a high rate of water transmission.Group B. Soils having a moderate infiltration rate when thoroughly wet. Theseconsist chiefly of moderately deep or deep, moderately well drained or well drainedsoils that have moderately fine texture to moderately coarse texture. These soilshave a moderate rate of water transmission.Group C. Soils having a slow infiltration rate when thoroughly wet. These consistchiefly of soils having a layer that impedes the downward movement of water orsoils of moderately fine texture or fine texture. These soils have a slow rate of watertransmission.Group D. Soils having a very slow infiltration rate (high runoff potential) whenthoroughly wet. These consist chiefly of clays that have a high shrink-swellpotential, soils that have a high water table, soils that have a claypan or clay layerat or near the surface, and soils that are shallow over nearly impervious material.These soils have a very slow rate of water transmission.If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter isfor drained areas and the second is for undrained areas. Only the soils that in theirnatural condition are in group D are assigned to dual classes.Hydrologic Soil Group—King County Area, WashingtonTenton Restaurant AdditionNatural ResourcesConservation ServiceWeb Soil SurveyNational Cooperative Soil Survey3/22/2016Page 3 of 4 Rating OptionsAggregation Method: Dominant ConditionComponent Percent Cutoff: None SpecifiedTie-break Rule: HigherHydrologic Soil Group—King County Area, WashingtonTenton Restaurant AdditionNatural ResourcesConservation ServiceWeb Soil SurveyNational Cooperative Soil Survey3/22/2016Page 4 of 4 EXISTING DRAINAGE BASINS EXISTING CONDITIONS MAP 1,636.8 ft 139.2 ft 185.8 ft185.8 ft 306.4 ft306.4 ft 120.4 ft120.4 ft 182.5 ft182.5 ft145.1 ft145.1 ft 145.1 ft145.1 ft 0.7 ft King County, Pictometry International Corp., King County King County iMap-Downstream Drainage Route Date: 7/11/2016 ±The information included on this map has been compiled by King County staff from a variety of sources and is subject to changewithout notice. King County makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness,or rights to the use of such information. This document is not intended for use as a survey product. King County shall not be liablefor any general, special, indirect, incidental, or consequential damages including, but not limited to, lost revenues or lost profitsresulting from the use or misuse of the information contained on this map. Any sale of this map or information on this map isprohibited except by written permission of King County. Appx. 24" CMP Bypass System 36" CMP 24" conc PROPOSED DRAINAGE BASINSROOF9,033 SFSIDEWALK 1,559 SFASPHALT 15,615 SFLANDSCAPE 10,134 SF PROPOSED CONDITIONS MAP Site area 37197 Offsite Driveway 698 Total Development Area 37895 Restaurant Bldg Roof 5011 Exposed Walkways (non-pollution generating) 1399 Existing Asphalt Pavement (pollution generating) 19616 Total impervious area 26026 Total pervious area 11869 Prop. Restaurant Roof 9033 Prop. Exposed Walkways (non-pollution generating) 1559 Replaced impervious Pavement (pollution generating) 1554 Prop. Permeable Parking (pollution generating) 15615 Landscape 10134 Total Hardscape area 27761 Total pervious area 10134 New/Replaced Impervious area 17169 New/Replaced water Quality area 17169 Drainage Areas Summary (Square Feet) Existing Conditions Proposed Conditions WWHM2012 PROJECT REPORT Det WQ Vault 12/10/2016 5:33:20 AM Page 2 General Model Information Project Name: Det WQ Vault Site Name: Renton Restaurant Site Address: 17630 108th Ave SE City: Renton, WA Report Date: 12/10/2016 Gage: Seatac Data Start: 1948/10/01 Data End: 2009/09/30 Timestep: 15 Minute Precip Scale: 1.00 Version Date: 2015/11/05 Version: 4.2.11 POC Thresholds Low Flow Threshold for POC1: 50 Percent of the 2 Year High Flow Threshold for POC1: 50 Year Det WQ Vault 12/10/2016 5:33:20 AM Page 3 Landuse Basin Data Predeveloped Land Use Site Bypass: No GroundWater: No Pervious Land Use acre C, Forest, Mod 0.87 Pervious Total 0.87 Impervious Land Use acre Impervious Total 0 Basin Total 0.87 Element Flows To: Surface Interflow Groundwater Det WQ Vault 12/10/2016 5:33:21 AM Page 4 Mitigated Land Use At Grade Surfaces Bypass: No GroundWater: No Pervious Land Use acre C, Lawn, Flat 0.4 Pervious Total 0.4 Impervious Land Use acre SIDEWALKS FLAT 0.04 PARKING FLAT 0.22 Impervious Total 0.26 Basin Total 0.66 Element Flows To: Surface Interflow Groundwater At Grade Runoff Flow Splitter 1At Grade Runoff Flow Splitter 1 Det WQ Vault 12/10/2016 5:33:21 AM Page 5 Roof Bypass: No GroundWater: No Pervious Land Use acre Pervious Total 0 Impervious Land Use acre ROADS FLAT 0.21 Impervious Total 0.21 Basin Total 0.21 Element Flows To: Surface Interflow Groundwater Detention Vault Detention Vault Det WQ Vault 12/10/2016 5:33:21 AM Page 6 Routing Elements Predeveloped Routing Det WQ Vault 12/10/2016 5:33:21 AM Page 7 Mitigated Routing Detention Vault Width: 21.67 ft. Length: 82.67 ft. Depth: 7 ft. Discharge Structure Riser Height: 6 ft. Riser Diameter: 18 in. Orifice 1 Diameter: 0.51 in. Elevation:0 ft. Orifice 2 Diameter: 0.8 in. Elevation:4.002 ft. Orifice 3 Diameter: 0.49 in. Elevation:4.5 ft. Element Flows To: Outlet 1 Outlet 2 Vault Hydraulic Table Stage(feet) Area(ac.) Volume(ac-ft.) Discharge(cfs) Infilt(cfs) 0.0000 0.041 0.000 0.000 0.000 0.0778 0.041 0.003 0.002 0.000 0.1556 0.041 0.006 0.002 0.000 0.2333 0.041 0.009 0.003 0.000 0.3111 0.041 0.012 0.003 0.000 0.3889 0.041 0.016 0.004 0.000 0.4667 0.041 0.019 0.004 0.000 0.5444 0.041 0.022 0.005 0.000 0.6222 0.041 0.025 0.005 0.000 0.7000 0.041 0.028 0.005 0.000 0.7778 0.041 0.032 0.006 0.000 0.8556 0.041 0.035 0.006 0.000 0.9333 0.041 0.038 0.006 0.000 1.0111 0.041 0.041 0.007 0.000 1.0889 0.041 0.044 0.007 0.000 1.1667 0.041 0.048 0.007 0.000 1.2444 0.041 0.051 0.007 0.000 1.3222 0.041 0.054 0.008 0.000 1.4000 0.041 0.057 0.008 0.000 1.4778 0.041 0.060 0.008 0.000 1.5556 0.041 0.064 0.008 0.000 1.6333 0.041 0.067 0.009 0.000 1.7111 0.041 0.070 0.009 0.000 1.7889 0.041 0.073 0.009 0.000 1.8667 0.041 0.076 0.009 0.000 1.9444 0.041 0.080 0.009 0.000 2.0222 0.041 0.083 0.010 0.000 2.1000 0.041 0.086 0.010 0.000 2.1778 0.041 0.089 0.010 0.000 2.2556 0.041 0.092 0.010 0.000 2.3333 0.041 0.096 0.010 0.000 2.4111 0.041 0.099 0.011 0.000 2.4889 0.041 0.102 0.011 0.000 2.5667 0.041 0.105 0.011 0.000 2.6444 0.041 0.108 0.011 0.000 2.7222 0.041 0.112 0.011 0.000 2.8000 0.041 0.115 0.011 0.000 2.8778 0.041 0.118 0.012 0.000 Det WQ Vault 12/10/2016 5:33:21 AM Page 8 2.9556 0.041 0.121 0.012 0.000 3.0333 0.041 0.124 0.012 0.000 3.1111 0.041 0.127 0.012 0.000 3.1889 0.041 0.131 0.012 0.000 3.2667 0.041 0.134 0.012 0.000 3.3444 0.041 0.137 0.012 0.000 3.4222 0.041 0.140 0.013 0.000 3.5000 0.041 0.143 0.013 0.000 3.5778 0.041 0.147 0.013 0.000 3.6556 0.041 0.150 0.013 0.000 3.7333 0.041 0.153 0.013 0.000 3.8111 0.041 0.156 0.013 0.000 3.8889 0.041 0.159 0.013 0.000 3.9667 0.041 0.163 0.014 0.000 4.0444 0.041 0.166 0.017 0.000 4.1222 0.041 0.169 0.020 0.000 4.2000 0.041 0.172 0.022 0.000 4.2778 0.041 0.175 0.023 0.000 4.3556 0.041 0.179 0.025 0.000 4.4333 0.041 0.182 0.026 0.000 4.5111 0.041 0.185 0.028 0.000 4.5889 0.041 0.188 0.030 0.000 4.6667 0.041 0.191 0.032 0.000 4.7444 0.041 0.195 0.033 0.000 4.8222 0.041 0.198 0.034 0.000 4.9000 0.041 0.201 0.036 0.000 4.9778 0.041 0.204 0.037 0.000 5.0556 0.041 0.207 0.038 0.000 5.1333 0.041 0.211 0.039 0.000 5.2111 0.041 0.214 0.040 0.000 5.2889 0.041 0.217 0.041 0.000 5.3667 0.041 0.220 0.042 0.000 5.4444 0.041 0.223 0.043 0.000 5.5222 0.041 0.227 0.044 0.000 5.6000 0.041 0.230 0.045 0.000 5.6778 0.041 0.233 0.046 0.000 5.7556 0.041 0.236 0.047 0.000 5.8333 0.041 0.239 0.048 0.000 5.9111 0.041 0.243 0.048 0.000 5.9889 0.041 0.246 0.049 0.000 6.0667 0.041 0.249 0.324 0.000 6.1444 0.041 0.252 0.920 0.000 6.2222 0.041 0.255 1.689 0.000 6.3000 0.041 0.259 2.554 0.000 6.3778 0.041 0.262 3.439 0.000 6.4556 0.041 0.265 4.270 0.000 6.5333 0.041 0.268 4.979 0.000 6.6111 0.041 0.271 5.524 0.000 6.6889 0.041 0.275 5.905 0.000 6.7667 0.041 0.278 6.262 0.000 6.8444 0.041 0.281 6.569 0.000 6.9222 0.041 0.284 6.863 0.000 7.0000 0.041 0.287 7.145 0.000 7.0778 0.041 0.291 7.416 0.000 7.1556 0.000 0.000 7.678 0.000 Det WQ Vault 12/10/2016 5:33:21 AM Page 9 At Grade Runoff Flow Splitter 1 Bottom Length: 7.50 ft. Bottom Length: 7.50 ft. Depth: 0.25 ft. Side slope 1: 0 To 1 Side slope 2: 0 To 1 Side slope 3: 0 To 1 Side slope 4: 0 To 1 Control Structure Splitter Hydraulic Table Stage(feet) Area(ac.) Volume(ac-ft.) Primary(cfs) Secondary(cfs) 0.000 0.001 0.000 0.000 0.000 0.002 0.001 0.000 0.002 0.000 0.005 0.001 0.000 0.003 0.000 0.008 0.001 0.000 0.004 0.000 0.011 0.001 0.000 0.005 0.000 0.013 0.001 0.000 0.005 0.000 0.016 0.001 0.000 0.006 0.000 0.019 0.001 0.000 0.006 0.000 0.022 0.001 0.000 0.007 0.000 0.025 0.001 0.000 0.007 0.002 0.027 0.001 0.000 0.007 0.004 0.030 0.001 0.000 0.008 0.007 0.033 0.001 0.000 0.008 0.010 0.036 0.001 0.000 0.009 0.014 0.038 0.001 0.000 0.009 0.017 0.041 0.001 0.000 0.009 0.022 0.044 0.001 0.000 0.010 0.026 0.047 0.001 0.000 0.010 0.031 0.050 0.001 0.000 0.010 0.036 0.052 0.001 0.000 0.010 0.041 0.055 0.001 0.000 0.011 0.046 0.058 0.001 0.000 0.011 0.052 0.061 0.001 0.000 0.011 0.058 0.063 0.001 0.000 0.012 0.064 0.066 0.001 0.000 0.012 0.070 0.069 0.001 0.000 0.012 0.076 0.072 0.001 0.000 0.012 0.083 0.075 0.001 0.000 0.012 0.090 0.077 0.001 0.000 0.013 0.097 0.080 0.001 0.000 0.013 0.104 0.083 0.001 0.000 0.013 0.111 0.086 0.001 0.000 0.013 0.118 0.088 0.001 0.000 0.014 0.126 0.091 0.001 0.000 0.014 0.133 0.094 0.001 0.000 0.014 0.141 0.097 0.001 0.000 0.014 0.149 0.100 0.001 0.000 0.015 0.157 0.102 0.001 0.000 0.015 0.165 0.105 0.001 0.000 0.015 0.174 0.108 0.001 0.000 0.015 0.182 0.111 0.001 0.000 0.015 0.190 0.113 0.001 0.000 0.016 0.199 0.116 0.001 0.000 0.016 0.208 0.119 0.001 0.000 0.016 0.216 0.122 0.001 0.000 0.016 0.225 0.125 0.001 0.000 0.016 0.234 0.127 0.001 0.000 0.016 0.243 Det WQ Vault 12/10/2016 5:33:21 AM Page 10 0.130 0.001 0.000 0.017 0.252 0.133 0.001 0.000 0.017 0.261 0.136 0.001 0.000 0.017 0.270 0.138 0.001 0.000 0.017 0.279 0.141 0.001 0.000 0.017 0.289 0.144 0.001 0.000 0.018 0.298 0.147 0.001 0.000 0.018 0.307 0.150 0.001 0.000 0.018 0.317 0.152 0.001 0.000 0.018 0.326 0.155 0.001 0.000 0.018 0.335 0.158 0.001 0.000 0.018 0.345 0.161 0.001 0.000 0.019 0.354 0.163 0.001 0.000 0.019 0.364 0.166 0.001 0.000 0.019 0.373 0.169 0.001 0.000 0.019 0.383 0.172 0.001 0.000 0.019 0.392 0.175 0.001 0.000 0.019 0.401 0.177 0.001 0.000 0.019 0.411 0.180 0.001 0.000 0.020 0.420 0.183 0.001 0.000 0.020 0.429 0.186 0.001 0.000 0.020 0.439 0.188 0.001 0.000 0.020 0.448 0.191 0.001 0.000 0.020 0.457 0.194 0.001 0.000 0.020 0.466 0.197 0.001 0.000 0.021 0.475 0.200 0.001 0.000 0.021 0.484 0.202 0.001 0.000 0.021 0.493 0.205 0.001 0.000 0.021 0.502 0.208 0.001 0.000 0.021 0.511 0.211 0.001 0.000 0.021 0.519 0.213 0.001 0.000 0.021 0.528 0.216 0.001 0.000 0.022 0.536 0.219 0.001 0.000 0.022 0.545 0.222 0.001 0.000 0.022 0.553 0.225 0.001 0.000 0.022 0.561 0.227 0.001 0.000 0.022 0.569 0.230 0.001 0.000 0.022 0.577 0.233 0.001 0.000 0.022 0.585 0.236 0.001 0.000 0.023 0.593 0.238 0.001 0.000 0.023 0.601 0.241 0.001 0.000 0.023 0.608 0.244 0.001 0.000 0.023 0.616 0.247 0.001 0.000 0.023 0.623 0.250 0.001 0.000 0.023 0.630 0.252 0.001 0.000 0.023 0.637 Discharge Structure Riser Height: 1 ft. Riser Diameter: 8 in. Orifice 1 Diameter: 1.32 in. Elevation:0 ft. Element Flows To: Outlet 1 Outlet 2 WQ Vault Detention Vault Det WQ Vault 12/10/2016 5:33:21 AM Page 11 WQ Vault Width: 10.33 ft. Length: 43.33 ft. Depth: 7 ft. Discharge Structure Riser Height: 6 ft. Riser Diameter: 12 in. Element Flows To: Outlet 1 Outlet 2 Detention Vault Vault Hydraulic Table Stage(feet) Area(ac.) Volume(ac-ft.) Discharge(cfs) Infilt(cfs) 0.0000 0.010 0.000 0.000 0.000 0.0778 0.010 0.000 0.000 0.000 0.1556 0.010 0.001 0.000 0.000 0.2333 0.010 0.002 0.000 0.000 0.3111 0.010 0.003 0.000 0.000 0.3889 0.010 0.004 0.000 0.000 0.4667 0.010 0.004 0.000 0.000 0.5444 0.010 0.005 0.000 0.000 0.6222 0.010 0.006 0.000 0.000 0.7000 0.010 0.007 0.000 0.000 0.7778 0.010 0.008 0.000 0.000 0.8556 0.010 0.008 0.000 0.000 0.9333 0.010 0.009 0.000 0.000 1.0111 0.010 0.010 0.000 0.000 1.0889 0.010 0.011 0.000 0.000 1.1667 0.010 0.012 0.000 0.000 1.2444 0.010 0.012 0.000 0.000 1.3222 0.010 0.013 0.000 0.000 1.4000 0.010 0.014 0.000 0.000 1.4778 0.010 0.015 0.000 0.000 1.5556 0.010 0.016 0.000 0.000 1.6333 0.010 0.016 0.000 0.000 1.7111 0.010 0.017 0.000 0.000 1.7889 0.010 0.018 0.000 0.000 1.8667 0.010 0.019 0.000 0.000 1.9444 0.010 0.020 0.000 0.000 2.0222 0.010 0.020 0.000 0.000 2.1000 0.010 0.021 0.000 0.000 2.1778 0.010 0.022 0.000 0.000 2.2556 0.010 0.023 0.000 0.000 2.3333 0.010 0.024 0.000 0.000 2.4111 0.010 0.024 0.000 0.000 2.4889 0.010 0.025 0.000 0.000 2.5667 0.010 0.026 0.000 0.000 2.6444 0.010 0.027 0.000 0.000 2.7222 0.010 0.028 0.000 0.000 2.8000 0.010 0.028 0.000 0.000 2.8778 0.010 0.029 0.000 0.000 2.9556 0.010 0.030 0.000 0.000 3.0333 0.010 0.031 0.000 0.000 3.1111 0.010 0.032 0.000 0.000 3.1889 0.010 0.032 0.000 0.000 3.2667 0.010 0.033 0.000 0.000 Det WQ Vault 12/10/2016 5:33:21 AM Page 12 3.3444 0.010 0.034 0.000 0.000 3.4222 0.010 0.035 0.000 0.000 3.5000 0.010 0.036 0.000 0.000 3.5778 0.010 0.036 0.000 0.000 3.6556 0.010 0.037 0.000 0.000 3.7333 0.010 0.038 0.000 0.000 3.8111 0.010 0.039 0.000 0.000 3.8889 0.010 0.040 0.000 0.000 3.9667 0.010 0.040 0.000 0.000 4.0444 0.010 0.041 0.000 0.000 4.1222 0.010 0.042 0.000 0.000 4.2000 0.010 0.043 0.000 0.000 4.2778 0.010 0.044 0.000 0.000 4.3556 0.010 0.044 0.000 0.000 4.4333 0.010 0.045 0.000 0.000 4.5111 0.010 0.046 0.000 0.000 4.5889 0.010 0.047 0.000 0.000 4.6667 0.010 0.048 0.000 0.000 4.7444 0.010 0.048 0.000 0.000 4.8222 0.010 0.049 0.000 0.000 4.9000 0.010 0.050 0.000 0.000 4.9778 0.010 0.051 0.000 0.000 5.0556 0.010 0.051 0.000 0.000 5.1333 0.010 0.052 0.000 0.000 5.2111 0.010 0.053 0.000 0.000 5.2889 0.010 0.054 0.000 0.000 5.3667 0.010 0.055 0.000 0.000 5.4444 0.010 0.055 0.000 0.000 5.5222 0.010 0.056 0.000 0.000 5.6000 0.010 0.057 0.000 0.000 5.6778 0.010 0.058 0.000 0.000 5.7556 0.010 0.059 0.000 0.000 5.8333 0.010 0.059 0.000 0.000 5.9111 0.010 0.060 0.000 0.000 5.9889 0.010 0.061 0.000 0.000 6.0667 0.010 0.062 0.182 0.000 6.1444 0.010 0.063 0.572 0.000 6.2222 0.010 0.063 1.046 0.000 6.3000 0.010 0.064 1.509 0.000 6.3778 0.010 0.065 1.879 0.000 6.4556 0.010 0.066 2.114 0.000 6.5333 0.010 0.067 2.300 0.000 6.6111 0.010 0.067 2.462 0.000 6.6889 0.010 0.068 2.614 0.000 6.7667 0.010 0.069 2.757 0.000 6.8444 0.010 0.070 2.894 0.000 6.9222 0.010 0.071 3.024 0.000 7.0000 0.010 0.071 3.149 0.000 7.0778 0.010 0.072 3.269 0.000 7.1556 0.000 0.000 3.385 0.000 Det WQ Vault 12/10/2016 5:33:21 AM Page 13 Analysis Results POC 1 + Predeveloped x Mitigated Predeveloped Landuse Totals for POC #1 Total Pervious Area: 0.87 Total Impervious Area: 0 Mitigated Landuse Totals for POC #1 Total Pervious Area: 0.4 Total Impervious Area: 0.47 Flow Frequency Method: Log Pearson Type III 17B Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.025904 5 year 0.042447 10 year 0.053083 25 year 0.065735 50 year 0.074499 100 year 0.082685 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.01528 5 year 0.024095 10 year 0.031501 25 year 0.042918 50 year 0.053105 100 year 0.064898 Annual Peaks Annual Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1949 0.030 0.011 1950 0.035 0.014 1951 0.057 0.043 1952 0.018 0.010 1953 0.014 0.012 1954 0.022 0.012 1955 0.035 0.012 1956 0.028 0.024 1957 0.023 0.012 1958 0.025 0.013 Det WQ Vault 12/10/2016 5:34:27 AM Page 14 1959 0.022 0.011 1960 0.039 0.036 1961 0.021 0.014 1962 0.013 0.010 1963 0.018 0.013 1964 0.026 0.013 1965 0.017 0.021 1966 0.017 0.012 1967 0.040 0.013 1968 0.022 0.012 1969 0.022 0.012 1970 0.017 0.013 1971 0.020 0.013 1972 0.043 0.036 1973 0.019 0.021 1974 0.021 0.013 1975 0.029 0.011 1976 0.021 0.012 1977 0.003 0.010 1978 0.018 0.013 1979 0.011 0.009 1980 0.051 0.038 1981 0.016 0.012 1982 0.033 0.024 1983 0.028 0.013 1984 0.017 0.010 1985 0.010 0.011 1986 0.044 0.014 1987 0.039 0.029 1988 0.015 0.011 1989 0.010 0.010 1990 0.094 0.038 1991 0.050 0.031 1992 0.020 0.014 1993 0.020 0.010 1994 0.007 0.009 1995 0.028 0.014 1996 0.066 0.042 1997 0.051 0.042 1998 0.012 0.010 1999 0.056 0.033 2000 0.020 0.013 2001 0.004 0.008 2002 0.023 0.020 2003 0.034 0.012 2004 0.037 0.039 2005 0.027 0.012 2006 0.030 0.023 2007 0.071 0.050 2008 0.086 0.040 2009 0.040 0.018 Ranked Annual Peaks Ranked Annual Peaks for Predeveloped and Mitigated. POC #1 Rank Predeveloped Mitigated 1 0.0938 0.0496 2 0.0864 0.0428 3 0.0709 0.0424 Det WQ Vault 12/10/2016 5:34:27 AM Page 15 4 0.0657 0.0421 5 0.0566 0.0403 6 0.0556 0.0389 7 0.0507 0.0383 8 0.0506 0.0375 9 0.0498 0.0363 10 0.0444 0.0357 11 0.0430 0.0332 12 0.0403 0.0312 13 0.0398 0.0290 14 0.0392 0.0238 15 0.0390 0.0237 16 0.0365 0.0225 17 0.0354 0.0214 18 0.0352 0.0212 19 0.0342 0.0200 20 0.0328 0.0181 21 0.0305 0.0139 22 0.0298 0.0138 23 0.0294 0.0138 24 0.0284 0.0136 25 0.0284 0.0136 26 0.0281 0.0133 27 0.0271 0.0132 28 0.0260 0.0131 29 0.0254 0.0131 30 0.0229 0.0130 31 0.0229 0.0129 32 0.0224 0.0128 33 0.0220 0.0127 34 0.0218 0.0126 35 0.0218 0.0126 36 0.0215 0.0124 37 0.0211 0.0124 38 0.0210 0.0123 39 0.0203 0.0123 40 0.0198 0.0123 41 0.0197 0.0122 42 0.0197 0.0120 43 0.0190 0.0119 44 0.0183 0.0118 45 0.0178 0.0118 46 0.0177 0.0117 47 0.0175 0.0114 48 0.0173 0.0110 49 0.0169 0.0110 50 0.0166 0.0108 51 0.0159 0.0106 52 0.0155 0.0104 53 0.0144 0.0102 54 0.0134 0.0101 55 0.0124 0.0101 56 0.0107 0.0099 57 0.0102 0.0097 58 0.0100 0.0096 59 0.0067 0.0092 60 0.0035 0.0089 61 0.0031 0.0081 Det WQ Vault 12/10/2016 5:34:27 AM Page 16 Det WQ Vault 12/10/2016 5:34:27 AM Page 17 Duration Flows The Facility PASSED Flow(cfs) Predev Mit Percentage Pass/Fail 0.0130 17079 14786 86 Pass 0.0136 15490 9668 62 Pass 0.0142 14076 5781 41 Pass 0.0148 12808 5546 43 Pass 0.0154 11580 5294 45 Pass 0.0161 10515 5058 48 Pass 0.0167 9563 4870 50 Pass 0.0173 8752 4691 53 Pass 0.0179 8040 4492 55 Pass 0.0185 7353 4273 58 Pass 0.0192 6742 4055 60 Pass 0.0198 6190 3863 62 Pass 0.0204 5728 3709 64 Pass 0.0210 5309 3506 66 Pass 0.0217 4924 3302 67 Pass 0.0223 4571 3136 68 Pass 0.0229 4239 2969 70 Pass 0.0235 3951 2821 71 Pass 0.0241 3643 2665 73 Pass 0.0248 3388 2515 74 Pass 0.0254 3133 2361 75 Pass 0.0260 2917 2190 75 Pass 0.0266 2706 2056 75 Pass 0.0273 2488 1955 78 Pass 0.0279 2314 1856 80 Pass 0.0285 2136 1748 81 Pass 0.0291 1973 1637 82 Pass 0.0297 1826 1567 85 Pass 0.0304 1704 1504 88 Pass 0.0310 1577 1413 89 Pass 0.0316 1442 1316 91 Pass 0.0322 1325 1239 93 Pass 0.0328 1232 1155 93 Pass 0.0335 1147 1083 94 Pass 0.0341 1086 1025 94 Pass 0.0347 1020 967 94 Pass 0.0353 947 893 94 Pass 0.0360 886 806 90 Pass 0.0366 824 726 88 Pass 0.0372 760 657 86 Pass 0.0378 725 560 77 Pass 0.0384 674 465 68 Pass 0.0391 623 358 57 Pass 0.0397 589 293 49 Pass 0.0403 549 246 44 Pass 0.0409 506 220 43 Pass 0.0415 469 193 41 Pass 0.0422 427 157 36 Pass 0.0428 388 127 32 Pass 0.0434 356 120 33 Pass 0.0440 328 116 35 Pass 0.0447 298 111 37 Pass 0.0453 270 106 39 Pass Det WQ Vault 12/10/2016 5:34:27 AM Page 18 0.0459 241 99 41 Pass 0.0465 218 82 37 Pass 0.0471 198 66 33 Pass 0.0478 173 55 31 Pass 0.0484 152 44 28 Pass 0.0490 130 32 24 Pass 0.0496 119 0 0 Pass 0.0503 104 0 0 Pass 0.0509 95 0 0 Pass 0.0515 83 0 0 Pass 0.0521 74 0 0 Pass 0.0527 69 0 0 Pass 0.0534 61 0 0 Pass 0.0540 53 0 0 Pass 0.0546 46 0 0 Pass 0.0552 39 0 0 Pass 0.0558 29 0 0 Pass 0.0565 25 0 0 Pass 0.0571 22 0 0 Pass 0.0577 20 0 0 Pass 0.0583 17 0 0 Pass 0.0590 14 0 0 Pass 0.0596 12 0 0 Pass 0.0602 8 0 0 Pass 0.0608 7 0 0 Pass 0.0614 7 0 0 Pass 0.0621 7 0 0 Pass 0.0627 6 0 0 Pass 0.0633 6 0 0 Pass 0.0639 6 0 0 Pass 0.0646 6 0 0 Pass 0.0652 6 0 0 Pass 0.0658 5 0 0 Pass 0.0664 5 0 0 Pass 0.0670 5 0 0 Pass 0.0677 5 0 0 Pass 0.0683 5 0 0 Pass 0.0689 5 0 0 Pass 0.0695 5 0 0 Pass 0.0701 4 0 0 Pass 0.0708 4 0 0 Pass 0.0714 3 0 0 Pass 0.0720 3 0 0 Pass 0.0726 3 0 0 Pass 0.0733 3 0 0 Pass 0.0739 3 0 0 Pass 0.0745 3 0 0 Pass Det WQ Vault 12/10/2016 5:34:27 AM Page 19 Water Quality Water Quality BMP Flow and Volume for POC #1 On-line facility volume: 0.0697 acre-feet On-line facility target flow: 0.0754 cfs. Adjusted for 15 min: 0.0754 cfs. Off-line facility target flow: 0.042 cfs. Adjusted for 15 min: 0.042 cfs. Det WQ Vault 12/10/2016 5:34:27 AM Page 20 LID Report Det WQ Vault 12/10/2016 5:35:46 AM Page 21 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. Det WQ Vault 12/10/2016 5:35:46 AM Page 22 Appendix Predeveloped Schematic Det WQ Vault 12/10/2016 5:35:46 AM Page 23 Mitigated Schematic Det WQ Vault 12/10/2016 5:35:47 AM Page 24 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 Det WQ Vault.wdm MESSU 25 PreDet WQ Vault.MES 27 PreDet WQ Vault.L61 28 PreDet WQ Vault.L62 30 POCDet WQ Vault1.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 PERLND 11 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 Site MAX 1 2 30 9 END DISPLY-INFO1 END DISPLY COPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 END TIMESERIES END COPY GENER OPCODE # # OPCD *** END OPCODE PARM # # K *** END PARM END GENER PERLND GEN-INFO <PLS ><-------Name------->NBLKS Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 11 C, Forest, Mod 1 1 1 1 27 0 END GEN-INFO *** Section PWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *** 11 0 0 1 0 0 0 0 0 0 0 0 0 END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ***************************** PIVL PYR # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ********* 11 0 0 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO Det WQ Vault 12/10/2016 5:35:47 AM Page 25 PWAT-PARM1 <PLS > PWATER variable monthly parameter value flags *** # - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT *** 11 0 0 0 0 0 0 0 0 0 0 0 END PWAT-PARM1 PWAT-PARM2 <PLS > PWATER input info: Part 2 *** # - # ***FOREST LZSN INFILT LSUR SLSUR KVARY AGWRC 11 0 4.5 0.08 400 0.1 0.5 0.996 END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 *** # - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP 11 0 0 2 2 0 0 0 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 *** # - # CEPSC UZSN NSUR INTFW IRC LZETP *** 11 0.2 0.5 0.35 6 0.5 0.7 END PWAT-PARM4 PWAT-STATE1 <PLS > *** Initial conditions at start of simulation ran from 1990 to end of 1992 (pat 1-11-95) RUN 21 *** # - # *** CEPS SURS UZS IFWS LZS AGWS GWVS 11 0 0 0 0 2.5 1 0 END PWAT-STATE1 END PERLND IMPLND GEN-INFO <PLS ><-------Name-------> Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** END GEN-INFO *** Section IWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** END ACTIVITY PRINT-INFO <ILS > ******** Print-flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* END PRINT-INFO IWAT-PARM1 <PLS > IWATER variable monthly parameter value flags *** # - # CSNO RTOP VRS VNN RTLI *** END IWAT-PARM1 IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC END IWAT-PARM2 IWAT-PARM3 <PLS > IWATER input info: Part 3 *** # - # ***PETMAX PETMIN END IWAT-PARM3 IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS END IWAT-STATE1 Det WQ Vault 12/10/2016 5:35:47 AM Page 26 END IMPLND SCHEMATIC <-Source-> <--Area--> <-Target-> MBLK *** <Name> # <-factor-> <Name> # Tbl# *** Site*** PERLND 11 0.87 COPY 501 12 PERLND 11 0.87 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 Det WQ Vault 12/10/2016 5:35:47 AM Page 27 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 Det WQ Vault 12/10/2016 5:35:47 AM Page 28 Mitigated UCI File RUN GLOBAL auto START 1948 10 01 END 2009 09 30 RUN INTERP OUTPUT LEVEL 0 0 RESUME 0 RUN 1 UNIT SYSTEM 1 END GLOBAL FILES <File> <Un#> <-----------File Name------------------------------>*** <-ID-> *** WDM 26 Det WQ Vault.wdm MESSU 25 MitDet WQ Vault.MES 27 MitDet WQ Vault.L61 28 MitDet WQ Vault.L62 30 DURDet WQ Vault1.dat 31 DURDet WQ Vault2.dat 32 DURDet WQ Vault3.dat 33 DURDet WQ Vault4.dat 34 DURDet WQ Vault5.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 RCHRES 1 DURANL 1 DURANL 2 DURANL 3 DURANL 4 DURANL 5 END INGRP END OPN SEQUENCE DURANL GEN-DURDATA 1 DURANL OF FLOW D1 1 20 1 30 2 DURANL OF FLOW D2 1 20 1 31 3 DURANL OF FLOW D3 1 20 1 32 4 DURANL OF FLOW D4 1 20 1 33 5 DURANL OF FLOW D5 1 20 1 34 END GEN-DURDATA DURATIONS 1 5 1 END DURATIONS LEVELS 1 12.9513.5714.1914.8115.4316.0616.6817.3017.9218.5419.1619.7920.4121.03 1 21.6522.2722.8923.5224.1424.76 2 25.3826.0026.6227.2527.8728.4929.1129.7330.3530.9831.6032.2232.8433.46 2 34.0834.7135.3335.9536.5737.19 3 37.8138.4439.0639.6840.3040.9241.5442.1742.7943.4144.0344.6545.2745.90 3 46.5247.1447.7648.3849.0049.63 4 50.2550.8751.4952.1152.7353.3653.9854.6055.2255.8456.4757.0957.7158.33 4 58.9559.5760.2060.8261.4462.06 5 62.6863.3063.9364.5565.1765.7966.4167.0367.6668.2868.9069.5270.1470.76 5 71.3972.0172.6373.2573.8774.49 END LEVELS END DURANL COPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 END TIMESERIES END COPY NETWORK RCHRES 1 HYDR RO 1 1 1000 DURANL 1 INPUT TIMSER 1 RCHRES 1 HYDR RO 1 1 1000 DURANL 2 INPUT TIMSER 1 RCHRES 1 HYDR RO 1 1 1000 DURANL 3 INPUT TIMSER 1 Det WQ Vault 12/10/2016 5:35:47 AM Page 29 RCHRES 1 HYDR RO 1 1 1000 DURANL 4 INPUT TIMSER 1 RCHRES 1 HYDR RO 1 1 1000 DURANL 5 INPUT TIMSER 1 END NETWORK RCHRES GEN-INFO 1 RCHRES 1 1 1 1 28 0 1 END GEN-INFO ACTIVITY 1 1 0 0 0 0 0 0 0 0 0 END ACTIVITY PRINT-INFO 1 6 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO HYDR-PARM1 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 1 1 0.12 0.0 0.0 0.5 0.0 END HYDR-PARM2 HYDR-INIT 1 0 4.0 END HYDR-INIT END RCHRES FTABLES FTABLE 1 92 4 0.000000 0.040655 0.000000 0.000000 0.077778 0.040655 0.003162 0.001968 0.155556 0.040655 0.006324 0.002784 0.233333 0.040655 0.009486 0.003409 0.311111 0.040655 0.012648 0.003937 0.388889 0.040655 0.015810 0.004402 0.466667 0.040655 0.018972 0.004822 0.544444 0.040655 0.022134 0.005208 0.622222 0.040655 0.025297 0.005568 0.700000 0.040655 0.028459 0.005905 0.777778 0.040655 0.031621 0.006225 0.855556 0.040655 0.034783 0.006529 0.933333 0.040655 0.037945 0.006819 1.011111 0.040655 0.041107 0.007097 1.088889 0.040655 0.044269 0.007365 1.166667 0.040655 0.047431 0.007624 1.244444 0.040655 0.050593 0.007874 1.322222 0.040655 0.053755 0.008116 1.400000 0.040655 0.056917 0.008351 1.477778 0.040655 0.060079 0.008580 1.555556 0.040655 0.063241 0.008803 1.633333 0.040655 0.066403 0.009021 1.711111 0.040655 0.069565 0.009233 1.788889 0.040655 0.072728 0.009440 1.866667 0.040655 0.075890 0.009643 1.944444 0.040655 0.079052 0.009842 2.022222 0.040655 0.082214 0.010037 2.100000 0.040655 0.085376 0.010228 2.177778 0.040655 0.088538 0.010416 2.255556 0.040655 0.091700 0.010600 2.333333 0.040655 0.094862 0.010782 2.411111 0.040655 0.098024 0.010960 2.488889 0.040655 0.101186 0.011135 2.566667 0.040655 0.104348 0.011308 2.644444 0.040655 0.107510 0.011478 2.722222 0.040655 0.110672 0.011646 2.800000 0.040655 0.113834 0.011811 2.877778 0.040655 0.116996 0.011974 2.955556 0.040655 0.120159 0.012134 3.033333 0.040655 0.123321 0.012293 3.111111 0.040655 0.126483 0.012450 3.188889 0.040655 0.129645 0.012604 3.266667 0.040655 0.132807 0.012757 Det WQ Vault 12/10/2016 5:35:47 AM Page 30 3.344444 0.040655 0.135969 0.012908 3.422222 0.040655 0.139131 0.013057 3.500000 0.040655 0.142293 0.013205 3.577778 0.040655 0.145455 0.013351 3.655556 0.040655 0.148617 0.013495 3.733333 0.040655 0.151779 0.013638 3.811111 0.040655 0.154941 0.013779 3.888889 0.040655 0.158103 0.013919 3.966667 0.040655 0.161265 0.014058 4.044444 0.040655 0.164427 0.017773 4.122222 0.040655 0.167590 0.020352 4.200000 0.040655 0.170752 0.022193 4.277778 0.040655 0.173914 0.023719 4.355556 0.040655 0.177076 0.025057 4.433333 0.040655 0.180238 0.026268 4.511111 0.040655 0.183400 0.028070 4.588889 0.040655 0.186562 0.030368 4.666667 0.040655 0.189724 0.032067 4.744444 0.040655 0.192886 0.033560 4.822222 0.040655 0.196048 0.034927 4.900000 0.040655 0.199210 0.036203 4.977778 0.040655 0.202372 0.037407 5.055556 0.040655 0.205534 0.038553 5.133333 0.040655 0.208696 0.039650 5.211111 0.040655 0.211859 0.040704 5.288889 0.040655 0.215021 0.041721 5.366667 0.040655 0.218183 0.042706 5.444444 0.040655 0.221345 0.043660 5.522222 0.040655 0.224507 0.044588 5.600000 0.040655 0.227669 0.045491 5.677778 0.040655 0.230831 0.046372 5.755556 0.040655 0.233993 0.047233 5.833333 0.040655 0.237155 0.048074 5.911111 0.040655 0.240317 0.048897 5.988889 0.040655 0.243479 0.049704 6.066667 0.040655 0.246641 0.324191 6.144444 0.040655 0.249803 0.920263 6.222222 0.040655 0.252965 1.688980 6.300000 0.040655 0.256127 2.554047 6.377778 0.040655 0.259290 3.439807 6.455556 0.040655 0.262452 4.270340 6.533333 0.040655 0.265614 4.979161 6.611111 0.040655 0.268776 5.524010 6.688889 0.040655 0.271938 5.905157 6.766667 0.040655 0.275100 6.262099 6.844444 0.040655 0.278262 6.569921 6.922222 0.040655 0.281424 6.863887 7.000000 0.040655 0.284586 7.145715 7.077778 0.040655 0.287748 7.416798 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 701 FLOW ENGL 0.0206612 RCHRES 1 EXTNL IVOL WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC END EXT SOURCES MASS-LINK <Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->*** <Name> <Name> # #<-factor-> <Name> <Name> # #*** END MASS-LINK END RUN Det WQ Vault 12/10/2016 5:35:47 AM Page 31 Predeveloped HSPF Message File Det WQ Vault 12/10/2016 5:35:47 AM Page 32 Mitigated HSPF Message File Det WQ Vault 12/10/2016 5:35:47 AM Page 33 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. 2005-2016; All Rights Reserved. Clear Creek Solutions, Inc. 6200 Capitol Blvd. Ste F Olympia, WA. 98501 Toll Free 1(866)943-0304 Local (360)943-0304 www.clearcreeksolutions.com WWHM2012 PROJECT REPORT Det WQ Vault 12/10/2016 2:47:31 AM Page 2 General Model Information Project Name: Det WQ Vault Site Name: Renton Restaurant Site Address: 17630 108th Ave SE City: Renton, WA Report Date: 12/10/2016 Gage: Seatac Data Start: 1948/10/01 Data End: 2009/09/30 Timestep: 15 Minute Precip Scale: 1.00 Version Date: 2015/11/05 Version: 4.2.11 POC Thresholds Low Flow Threshold for POC1: 50 Percent of the 2 Year High Flow Threshold for POC1: 50 Year Det WQ Vault 12/10/2016 2:47:31 AM Page 3 Landuse Basin Data Predeveloped Land Use Basin 1 Bypass: No GroundWater: No Pervious Land Use acre C, Forest, Mod 0.66 Pervious Total 0.66 Impervious Land Use acre Impervious Total 0 Basin Total 0.66 Element Flows To: Surface Interflow Groundwater Det WQ Vault 12/10/2016 2:47:31 AM Page 4 Mitigated Land Use Basin 1 Bypass: No GroundWater: No Pervious Land Use acre C, Lawn, Flat 0.4 Pervious Total 0.4 Impervious Land Use acre SIDEWALKS FLAT 0.04 PARKING FLAT 0.22 Impervious Total 0.26 Basin Total 0.66 Element Flows To: Surface Interflow Groundwater Vault 1 Vault 1 Det WQ Vault 12/10/2016 2:47:31 AM Page 5 Routing Elements Predeveloped Routing Det WQ Vault 12/10/2016 2:47:31 AM Page 6 Mitigated Routing Vault 1 Width: 21.67 ft. Length: 81.67 ft. Depth: 7 ft. Discharge Structure Riser Height: 6 ft. Riser Diameter: 18 in. Orifice 1 Diameter: 0.51 in. Elevation:0 ft. Orifice 2 Diameter: 0.8 in. Elevation:4.002 ft. Orifice 3 Diameter: 0.49 in. Elevation:4.5 ft. Element Flows To: Outlet 1 Outlet 2 Vault Hydraulic Table Stage(feet) Area(ac.) Volume(ac-ft.) Discharge(cfs) Infilt(cfs) 0.0000 0.040 0.000 0.000 0.000 0.0778 0.040 0.003 0.002 0.000 0.1556 0.040 0.006 0.002 0.000 0.2333 0.040 0.009 0.003 0.000 0.3111 0.040 0.012 0.003 0.000 0.3889 0.040 0.015 0.004 0.000 0.4667 0.040 0.019 0.004 0.000 0.5444 0.040 0.022 0.005 0.000 0.6222 0.040 0.025 0.005 0.000 0.7000 0.040 0.028 0.005 0.000 0.7778 0.040 0.031 0.006 0.000 0.8556 0.040 0.034 0.006 0.000 0.9333 0.040 0.037 0.006 0.000 1.0111 0.040 0.041 0.007 0.000 1.0889 0.040 0.044 0.007 0.000 1.1667 0.040 0.047 0.007 0.000 1.2444 0.040 0.050 0.007 0.000 1.3222 0.040 0.053 0.008 0.000 1.4000 0.040 0.056 0.008 0.000 1.4778 0.040 0.060 0.008 0.000 1.5556 0.040 0.063 0.008 0.000 1.6333 0.040 0.066 0.009 0.000 1.7111 0.040 0.069 0.009 0.000 1.7889 0.040 0.072 0.009 0.000 1.8667 0.040 0.075 0.009 0.000 1.9444 0.040 0.079 0.009 0.000 2.0222 0.040 0.082 0.010 0.000 2.1000 0.040 0.085 0.010 0.000 2.1778 0.040 0.088 0.010 0.000 2.2556 0.040 0.091 0.010 0.000 2.3333 0.040 0.094 0.010 0.000 2.4111 0.040 0.098 0.011 0.000 2.4889 0.040 0.101 0.011 0.000 2.5667 0.040 0.104 0.011 0.000 2.6444 0.040 0.107 0.011 0.000 2.7222 0.040 0.110 0.011 0.000 2.8000 0.040 0.113 0.011 0.000 2.8778 0.040 0.116 0.012 0.000 Det WQ Vault 12/10/2016 2:47:31 AM Page 7 2.9556 0.040 0.120 0.012 0.000 3.0333 0.040 0.123 0.012 0.000 3.1111 0.040 0.126 0.012 0.000 3.1889 0.040 0.129 0.012 0.000 3.2667 0.040 0.132 0.012 0.000 3.3444 0.040 0.135 0.012 0.000 3.4222 0.040 0.139 0.013 0.000 3.5000 0.040 0.142 0.013 0.000 3.5778 0.040 0.145 0.013 0.000 3.6556 0.040 0.148 0.013 0.000 3.7333 0.040 0.151 0.013 0.000 3.8111 0.040 0.154 0.013 0.000 3.8889 0.040 0.158 0.013 0.000 3.9667 0.040 0.161 0.014 0.000 4.0444 0.040 0.164 0.017 0.000 4.1222 0.040 0.167 0.020 0.000 4.2000 0.040 0.170 0.022 0.000 4.2778 0.040 0.173 0.023 0.000 4.3556 0.040 0.177 0.025 0.000 4.4333 0.040 0.180 0.026 0.000 4.5111 0.040 0.183 0.028 0.000 4.5889 0.040 0.186 0.030 0.000 4.6667 0.040 0.189 0.032 0.000 4.7444 0.040 0.192 0.033 0.000 4.8222 0.040 0.195 0.034 0.000 4.9000 0.040 0.199 0.036 0.000 4.9778 0.040 0.202 0.037 0.000 5.0556 0.040 0.205 0.038 0.000 5.1333 0.040 0.208 0.039 0.000 5.2111 0.040 0.211 0.040 0.000 5.2889 0.040 0.214 0.041 0.000 5.3667 0.040 0.218 0.042 0.000 5.4444 0.040 0.221 0.043 0.000 5.5222 0.040 0.224 0.044 0.000 5.6000 0.040 0.227 0.045 0.000 5.6778 0.040 0.230 0.046 0.000 5.7556 0.040 0.233 0.047 0.000 5.8333 0.040 0.237 0.048 0.000 5.9111 0.040 0.240 0.048 0.000 5.9889 0.040 0.243 0.049 0.000 6.0667 0.040 0.246 0.324 0.000 6.1444 0.040 0.249 0.920 0.000 6.2222 0.040 0.252 1.689 0.000 6.3000 0.040 0.256 2.554 0.000 6.3778 0.040 0.259 3.439 0.000 6.4556 0.040 0.262 4.270 0.000 6.5333 0.040 0.265 4.979 0.000 6.6111 0.040 0.268 5.524 0.000 6.6889 0.040 0.271 5.905 0.000 6.7667 0.040 0.274 6.262 0.000 6.8444 0.040 0.278 6.569 0.000 6.9222 0.040 0.281 6.863 0.000 7.0000 0.040 0.284 7.145 0.000 7.0778 0.040 0.287 7.416 0.000 7.1556 0.000 0.000 7.678 0.000 Det WQ Vault 12/10/2016 2:47:31 AM Page 8 Analysis Results POC 1 + Predeveloped x Mitigated Predeveloped Landuse Totals for POC #1 Total Pervious Area: 0.66 Total Impervious Area: 0 Mitigated Landuse Totals for POC #1 Total Pervious Area: 0.4 Total Impervious Area: 0.26 Flow Frequency Method: Log Pearson Type III 17B Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.019652 5 year 0.032201 10 year 0.04027 25 year 0.049868 50 year 0.056517 100 year 0.062727 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.010347 5 year 0.013729 10 year 0.016265 25 year 0.019824 50 year 0.022744 100 year 0.025906 Annual Peaks Annual Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1949 0.023 0.009 1950 0.027 0.011 1951 0.043 0.023 1952 0.013 0.008 1953 0.011 0.009 1954 0.017 0.010 1955 0.027 0.010 1956 0.022 0.012 1957 0.017 0.010 1958 0.019 0.010 Det WQ Vault 12/10/2016 2:48:41 AM Page 9 1959 0.017 0.009 1960 0.030 0.014 1961 0.016 0.011 1962 0.010 0.007 1963 0.014 0.010 1964 0.020 0.010 1965 0.013 0.011 1966 0.013 0.009 1967 0.030 0.010 1968 0.017 0.009 1969 0.017 0.009 1970 0.013 0.010 1971 0.015 0.010 1972 0.033 0.013 1973 0.014 0.011 1974 0.016 0.010 1975 0.022 0.009 1976 0.016 0.010 1977 0.002 0.007 1978 0.013 0.011 1979 0.008 0.007 1980 0.038 0.020 1981 0.012 0.010 1982 0.025 0.012 1983 0.021 0.010 1984 0.013 0.008 1985 0.008 0.008 1986 0.034 0.011 1987 0.030 0.013 1988 0.012 0.008 1989 0.008 0.008 1990 0.071 0.013 1991 0.038 0.013 1992 0.015 0.011 1993 0.015 0.008 1994 0.005 0.007 1995 0.022 0.011 1996 0.050 0.018 1997 0.038 0.031 1998 0.009 0.008 1999 0.042 0.013 2000 0.015 0.010 2001 0.003 0.006 2002 0.017 0.012 2003 0.026 0.009 2004 0.028 0.014 2005 0.021 0.010 2006 0.023 0.012 2007 0.054 0.026 2008 0.066 0.020 2009 0.031 0.012 Ranked Annual Peaks Ranked Annual Peaks for Predeveloped and Mitigated. POC #1 Rank Predeveloped Mitigated 1 0.0712 0.0305 2 0.0656 0.0260 3 0.0538 0.0230 Det WQ Vault 12/10/2016 2:48:41 AM Page 10 4 0.0498 0.0201 5 0.0429 0.0196 6 0.0422 0.0181 7 0.0385 0.0140 8 0.0384 0.0137 9 0.0377 0.0135 10 0.0337 0.0133 11 0.0326 0.0132 12 0.0306 0.0130 13 0.0302 0.0126 14 0.0297 0.0122 15 0.0296 0.0118 16 0.0277 0.0116 17 0.0268 0.0116 18 0.0267 0.0115 19 0.0259 0.0115 20 0.0249 0.0115 21 0.0231 0.0114 22 0.0226 0.0110 23 0.0223 0.0109 24 0.0216 0.0108 25 0.0215 0.0107 26 0.0213 0.0106 27 0.0206 0.0104 28 0.0197 0.0104 29 0.0193 0.0104 30 0.0174 0.0103 31 0.0174 0.0102 32 0.0170 0.0102 33 0.0167 0.0101 34 0.0165 0.0100 35 0.0165 0.0100 36 0.0163 0.0100 37 0.0160 0.0100 38 0.0159 0.0099 39 0.0154 0.0098 40 0.0150 0.0096 41 0.0150 0.0095 42 0.0150 0.0094 43 0.0144 0.0094 44 0.0139 0.0093 45 0.0135 0.0092 46 0.0135 0.0091 47 0.0133 0.0090 48 0.0131 0.0086 49 0.0128 0.0086 50 0.0126 0.0082 51 0.0120 0.0081 52 0.0117 0.0081 53 0.0109 0.0081 54 0.0101 0.0080 55 0.0094 0.0079 56 0.0081 0.0076 57 0.0078 0.0073 58 0.0076 0.0071 59 0.0051 0.0069 60 0.0027 0.0068 61 0.0023 0.0060 Det WQ Vault 12/10/2016 2:48:41 AM Page 11 Det WQ Vault 12/10/2016 2:48:41 AM Page 12 Duration Flows Flow(cfs) Predev Mit Percentage Pass/Fail 0.0098 60509 229716 379 Fail 0.0103 57365 213674 372 Fail 0.0108 54328 198146 364 Fail 0.0112 51526 183366 355 Fail 0.0117 48852 169677 347 Fail 0.0122 46371 157956 340 Fail 0.0127 43975 146984 334 Fail 0.0131 41836 135947 324 Fail 0.0136 39783 126429 317 Fail 0.0141 37815 117318 310 Fail 0.0145 35912 108505 302 Fail 0.0150 34179 99886 292 Fail 0.0155 32511 92528 284 Fail 0.0160 30950 85341 275 Fail 0.0164 29410 78433 266 Fail 0.0169 28019 72251 257 Fail 0.0174 26715 66263 248 Fail 0.0178 25474 59418 233 Fail 0.0183 24319 54071 222 Fail 0.0188 23250 49045 210 Fail 0.0193 22266 44660 200 Fail 0.0197 21340 40575 190 Fail 0.0202 20441 36618 179 Fail 0.0207 19571 32939 168 Fail 0.0211 18690 29132 155 Fail 0.0216 17922 26501 147 Fail 0.0221 17233 24169 140 Fail 0.0226 16568 21774 131 Fail 0.0230 15969 19603 122 Fail 0.0235 15413 17541 113 Fail 0.0240 14891 15930 106 Pass 0.0244 14341 14570 101 Pass 0.0249 13854 13310 96 Pass 0.0254 13344 12055 90 Pass 0.0259 12882 10765 83 Pass 0.0263 12401 9379 75 Pass 0.0268 11956 7995 66 Pass 0.0273 11499 7411 64 Pass 0.0277 11105 6870 61 Pass 0.0282 10703 6198 57 Pass 0.0287 10331 5570 53 Pass 0.0292 9967 5118 51 Pass 0.0296 9636 4626 48 Pass 0.0301 9306 4297 46 Pass 0.0306 8994 3906 43 Pass 0.0310 8710 3371 38 Pass 0.0315 8457 2870 33 Pass 0.0320 8166 2385 29 Pass 0.0325 7897 2015 25 Pass 0.0329 7642 1561 20 Pass 0.0334 7388 1221 16 Pass 0.0339 7155 1167 16 Pass 0.0344 6921 1150 16 Pass 0.0348 6708 1133 16 Pass Det WQ Vault 12/10/2016 2:48:41 AM Page 13 0.0353 6483 1112 17 Pass 0.0358 6275 1096 17 Pass 0.0362 6092 1081 17 Pass 0.0367 5916 1068 18 Pass 0.0372 5756 1053 18 Pass 0.0377 5597 1038 18 Pass 0.0381 5420 1019 18 Pass 0.0386 5283 1002 18 Pass 0.0391 5116 983 19 Pass 0.0395 4977 962 19 Pass 0.0400 4840 943 19 Pass 0.0405 4712 922 19 Pass 0.0410 4584 900 19 Pass 0.0414 4457 878 19 Pass 0.0419 4325 858 19 Pass 0.0424 4211 839 19 Pass 0.0428 4102 812 19 Pass 0.0433 3985 787 19 Pass 0.0438 3880 746 19 Pass 0.0443 3779 697 18 Pass 0.0447 3647 679 18 Pass 0.0452 3557 663 18 Pass 0.0457 3459 640 18 Pass 0.0461 3364 616 18 Pass 0.0466 3260 599 18 Pass 0.0471 3172 574 18 Pass 0.0476 3082 547 17 Pass 0.0480 3001 530 17 Pass 0.0485 2920 505 17 Pass 0.0490 2838 488 17 Pass 0.0494 2757 452 16 Pass 0.0499 2671 430 16 Pass 0.0504 2584 419 16 Pass 0.0509 2511 405 16 Pass 0.0513 2443 351 14 Pass 0.0518 2381 336 14 Pass 0.0523 2314 327 14 Pass 0.0527 2233 314 14 Pass 0.0532 2175 299 13 Pass 0.0537 2119 290 13 Pass 0.0542 2052 284 13 Pass 0.0546 1997 276 13 Pass 0.0551 1932 269 13 Pass 0.0556 1874 261 13 Pass 0.0560 1822 250 13 Pass 0.0565 1775 241 13 Pass The development has an increase in flow durations from 1/2 Predeveloped 2 year flow to the 2 year flow or more than a 10% increase from the 2 year to the 50 year flow. Det WQ Vault 12/10/2016 2:48:41 AM Page 14 Water Quality Water Quality BMP Flow and Volume for POC #1 On-line facility volume: 0.0455 acre-feet On-line facility target flow: 0.0428 cfs. Adjusted for 15 min: 0.0428 cfs. Off-line facility target flow: 0.0236 cfs. Adjusted for 15 min: 0.0236 cfs. Det WQ Vault 12/10/2016 2:48:41 AM Page 15 LID Report Det WQ Vault 12/10/2016 2:49:32 AM Page 16 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. Det WQ Vault 12/10/2016 2:49:32 AM Page 17 Appendix Predeveloped Schematic Det WQ Vault 12/10/2016 2:49:32 AM Page 18 Mitigated Schematic Det WQ Vault 12/10/2016 2:49:33 AM Page 19 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 Det WQ Vault.wdm MESSU 25 PreDet WQ Vault.MES 27 PreDet WQ Vault.L61 28 PreDet WQ Vault.L62 30 POCDet WQ Vault1.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 PERLND 11 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 Basin 1 MAX 1 2 30 9 END DISPLY-INFO1 END DISPLY COPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 END TIMESERIES END COPY GENER OPCODE # # OPCD *** END OPCODE PARM # # K *** END PARM END GENER PERLND GEN-INFO <PLS ><-------Name------->NBLKS Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 11 C, Forest, Mod 1 1 1 1 27 0 END GEN-INFO *** Section PWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *** 11 0 0 1 0 0 0 0 0 0 0 0 0 END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ***************************** PIVL PYR # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ********* 11 0 0 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO Det WQ Vault 12/10/2016 2:49:33 AM Page 20 PWAT-PARM1 <PLS > PWATER variable monthly parameter value flags *** # - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT *** 11 0 0 0 0 0 0 0 0 0 0 0 END PWAT-PARM1 PWAT-PARM2 <PLS > PWATER input info: Part 2 *** # - # ***FOREST LZSN INFILT LSUR SLSUR KVARY AGWRC 11 0 4.5 0.08 400 0.1 0.5 0.996 END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 *** # - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP 11 0 0 2 2 0 0 0 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 *** # - # CEPSC UZSN NSUR INTFW IRC LZETP *** 11 0.2 0.5 0.35 6 0.5 0.7 END PWAT-PARM4 PWAT-STATE1 <PLS > *** Initial conditions at start of simulation ran from 1990 to end of 1992 (pat 1-11-95) RUN 21 *** # - # *** CEPS SURS UZS IFWS LZS AGWS GWVS 11 0 0 0 0 2.5 1 0 END PWAT-STATE1 END PERLND IMPLND GEN-INFO <PLS ><-------Name-------> Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** END GEN-INFO *** Section IWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** END ACTIVITY PRINT-INFO <ILS > ******** Print-flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* END PRINT-INFO IWAT-PARM1 <PLS > IWATER variable monthly parameter value flags *** # - # CSNO RTOP VRS VNN RTLI *** END IWAT-PARM1 IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC END IWAT-PARM2 IWAT-PARM3 <PLS > IWATER input info: Part 3 *** # - # ***PETMAX PETMIN END IWAT-PARM3 IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS END IWAT-STATE1 Det WQ Vault 12/10/2016 2:49:33 AM Page 21 END IMPLND SCHEMATIC <-Source-> <--Area--> <-Target-> MBLK *** <Name> # <-factor-> <Name> # Tbl# *** Basin 1*** PERLND 11 0.66 COPY 501 12 PERLND 11 0.66 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 Det WQ Vault 12/10/2016 2:49:33 AM 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 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 Det WQ Vault 12/10/2016 2:49:33 AM Page 23 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 Det WQ Vault.wdm MESSU 25 MitDet WQ Vault.MES 27 MitDet WQ Vault.L61 28 MitDet WQ Vault.L62 30 POCDet WQ Vault1.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 PERLND 16 IMPLND 8 IMPLND 11 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 PRINT-INFO <PLS > ***************** Print-flags ***************************** PIVL PYR Det WQ Vault 12/10/2016 2:49:33 AM Page 24 # - # 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 *** 8 SIDEWALKS/FLAT 1 1 1 27 0 11 PARKING/FLAT 1 1 1 27 0 END GEN-INFO *** Section IWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** 8 0 0 1 0 0 0 11 0 0 1 0 0 0 END ACTIVITY PRINT-INFO <ILS > ******** Print-flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* 8 0 0 4 0 0 0 1 9 11 0 0 4 0 0 0 1 9 END PRINT-INFO IWAT-PARM1 <PLS > IWATER variable monthly parameter value flags *** # - # CSNO RTOP VRS VNN RTLI *** 8 0 0 0 0 0 11 0 0 0 0 0 END IWAT-PARM1 IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC Det WQ Vault 12/10/2016 2:49:33 AM Page 25 8 400 0.01 0.1 0.1 11 400 0.01 0.1 0.1 END IWAT-PARM2 IWAT-PARM3 <PLS > IWATER input info: Part 3 *** # - # ***PETMAX PETMIN 8 0 0 11 0 0 END IWAT-PARM3 IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS 8 0 0 11 0 0 END IWAT-STATE1 END IMPLND SCHEMATIC <-Source-> <--Area--> <-Target-> MBLK *** <Name> # <-factor-> <Name> # Tbl# *** Basin 1*** PERLND 16 0.4 RCHRES 1 2 PERLND 16 0.4 RCHRES 1 3 IMPLND 8 0.04 RCHRES 1 5 IMPLND 11 0.22 RCHRES 1 5 ******Routing****** PERLND 16 0.4 COPY 1 12 IMPLND 8 0.04 COPY 1 15 IMPLND 11 0.22 COPY 1 15 PERLND 16 0.4 COPY 1 13 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 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 Det WQ Vault 12/10/2016 2:49:33 AM Page 26 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 0.02 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 0.040629 0.000000 0.000000 0.077778 0.040629 0.003160 0.001968 0.155556 0.040629 0.006320 0.002784 0.233333 0.040629 0.009480 0.003409 0.311111 0.040629 0.012640 0.003937 0.388889 0.040629 0.015800 0.004402 0.466667 0.040629 0.018960 0.004822 0.544444 0.040629 0.022120 0.005208 0.622222 0.040629 0.025280 0.005568 0.700000 0.040629 0.028440 0.005905 0.777778 0.040629 0.031600 0.006225 0.855556 0.040629 0.034760 0.006529 0.933333 0.040629 0.037920 0.006819 1.011111 0.040629 0.041080 0.007097 1.088889 0.040629 0.044240 0.007365 1.166667 0.040629 0.047400 0.007624 1.244444 0.040629 0.050560 0.007874 1.322222 0.040629 0.053720 0.008116 1.400000 0.040629 0.056880 0.008351 1.477778 0.040629 0.060040 0.008580 1.555556 0.040629 0.063200 0.008803 1.633333 0.040629 0.066360 0.009021 1.711111 0.040629 0.069520 0.009233 1.788889 0.040629 0.072680 0.009440 1.866667 0.040629 0.075840 0.009643 1.944444 0.040629 0.079000 0.009842 2.022222 0.040629 0.082160 0.010037 2.100000 0.040629 0.085320 0.010228 2.177778 0.040629 0.088480 0.010416 2.255556 0.040629 0.091640 0.010600 2.333333 0.040629 0.094800 0.010782 2.411111 0.040629 0.097960 0.010960 2.488889 0.040629 0.101120 0.011135 2.566667 0.040629 0.104280 0.011308 2.644444 0.040629 0.107441 0.011478 2.722222 0.040629 0.110601 0.011646 2.800000 0.040629 0.113761 0.011811 2.877778 0.040629 0.116921 0.011974 2.955556 0.040629 0.120081 0.012134 3.033333 0.040629 0.123241 0.012293 3.111111 0.040629 0.126401 0.012450 3.188889 0.040629 0.129561 0.012604 Det WQ Vault 12/10/2016 2:49:33 AM Page 27 3.266667 0.040629 0.132721 0.012757 3.344444 0.040629 0.135881 0.012908 3.422222 0.040629 0.139041 0.013057 3.500000 0.040629 0.142201 0.013205 3.577778 0.040629 0.145361 0.013351 3.655556 0.040629 0.148521 0.013495 3.733333 0.040629 0.151681 0.013638 3.811111 0.040629 0.154841 0.013779 3.888889 0.040629 0.158001 0.013919 3.966667 0.040629 0.161161 0.014058 4.044444 0.040629 0.164321 0.017773 4.122222 0.040629 0.167481 0.020352 4.200000 0.040629 0.170641 0.022193 4.277778 0.040629 0.173801 0.023719 4.355556 0.040629 0.176961 0.025057 4.433333 0.040629 0.180121 0.026268 4.511111 0.040629 0.183281 0.028070 4.588889 0.040629 0.186441 0.030368 4.666667 0.040629 0.189601 0.032067 4.744444 0.040629 0.192761 0.033560 4.822222 0.040629 0.195921 0.034927 4.900000 0.040629 0.199081 0.036203 4.977778 0.040629 0.202241 0.037407 5.055556 0.040629 0.205401 0.038553 5.133333 0.040629 0.208561 0.039650 5.211111 0.040629 0.211721 0.040704 5.288889 0.040629 0.214881 0.041721 5.366667 0.040629 0.218041 0.042706 5.444444 0.040629 0.221201 0.043660 5.522222 0.040629 0.224361 0.044588 5.600000 0.040629 0.227521 0.045491 5.677778 0.040629 0.230681 0.046372 5.755556 0.040629 0.233841 0.047233 5.833333 0.040629 0.237001 0.048074 5.911111 0.040629 0.240161 0.048897 5.988889 0.040629 0.243321 0.049704 6.066667 0.040629 0.246481 0.324191 6.144444 0.040629 0.249641 0.920263 6.222222 0.040629 0.252801 1.688980 6.300000 0.040629 0.255961 2.554047 6.377778 0.040629 0.259121 3.439807 6.455556 0.040629 0.262281 4.270340 6.533333 0.040629 0.265441 4.979161 6.611111 0.040629 0.268601 5.524010 6.688889 0.040629 0.271761 5.905157 6.766667 0.040629 0.274921 6.262099 6.844444 0.040629 0.278081 6.569921 6.922222 0.040629 0.281241 6.863887 7.000000 0.040629 0.284401 7.145715 7.077778 0.040629 0.287561 7.416798 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 1003 STAG ENGL REPL COPY 1 OUTPUT MEAN 1 1 48.4 WDM 701 FLOW ENGL REPL COPY 501 OUTPUT MEAN 1 1 48.4 WDM 801 FLOW ENGL REPL Det WQ Vault 12/10/2016 2:49:33 AM Page 28 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 Det WQ Vault 12/10/2016 2:49:33 AM Page 29 Predeveloped HSPF Message File Det WQ Vault 12/10/2016 2:49:33 AM Page 30 Mitigated HSPF Message File Det WQ Vault 12/10/2016 2:49:33 AM Page 31 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. 2005-2016; 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 Site Improvement Bond Quantity WorksheetWeb date: 12/02/2008Original bond computations prepared by:Name:Date:PE Registration Number:Tel. #:Firm Name:Address:Project No: Stabilization/Erosion Sediment Control (ESC) (A)Existing Right-of-Way Improvements (B)Future Public Right of Way & Drainage Facilities (C)Private Improvements(D)Calculated Quantity Completed(E)Total Right-of Way and/or Site Restoration Bond*/** (A+B)(First $7,500 of bond* shall be cash.)Performance Bond* Amount (A+B+C+D) = TOTAL (T)T x 0.30 ORMinimum bond* amount is $2000.Reduced Performance Bond* Total *** Use larger of Tx30% or (T-E)Maintenance/Defect Bond* TotalNAME OF PERSON PREPARING BOND* REDUCTION:Date:* NOTE:The word "bond" as used in this document means a financial guarantee acceptable to King County.** NOTE: KCC 27A authorizes right of way and site restoration bonds to be combined when both are required. The restoration requirement shall include the total cost for all TESC as a minimum, not a maximum. In addition, corrective work, both on- and off-site needs to be included. Quantities shall reflect worse case scenarios not just minimum requirements. For example, if a salmonid stream may be damaged, some estimated costs for restoration needs to be reflected in this amount. The 30% contingency and mobilization costs are computed in this quantity.*** NOTE: Per KCC 27A, total bond amounts remaining after reduction shall not be less than 30% of the original amount (T) or as revised by major design changes.REQUIRED BOND* AMOUNTS ARE SUBJECT TO REVIEW AND MODIFICATION BY DDES-$ 5,921.1$ 354,743.9$ 5,346.4$ (T-E)19,622.9$ 4,061.4$ 106,423.2$ (B+C) x 0.25 =24,969.3$ 325,713.2$ 354,743.9$ ROAD IMPROVEMENTS & DRAINAGE FACILITIES FINANCIAL GUARANTEE REQUIREMENTSPUBLIC ROAD & DRAINAGE MAINTENANCE/DEFECT BOND*PERFORMANCE BOND*AMOUNTBOND* AMOUNT REQUIRED AT RECORDING ORTEMPORARY OCCUPANCY ***Page 9 of 9li-wks-sbq-xls_16Jul11Check out the DDES Web site at www.kingcounty.gov/permitsUnit prices updated: 02/12/02Version: 11/26/08Report Date: 12/11/2016 APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES 1/9/2009 2009 Surface Water Design Manual – Appendix A A-2 NO. 1 – DETENTION PONDS Maintenance Component Defect or Problem Conditions When Maintenance Is Needed Results Expected When Maintenance Is Performed Trash and debris Any trash and debris which exceed 1 cubic foot per 1,000 square feet (this is about equal to the amount of trash it would take to fill up one standard size office garbage can). In general, there should be no visual evidence of dumping. Trash and debris cleared from site. Noxious weeds Any noxious or nuisance vegetation which may constitute a hazard to County personnel or the public. Noxious and nuisance vegetation removed according to applicable regulations. No danger of noxious vegetation where County personnel or the public might normally be. Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Site Grass/groundcover Grass or groundcover exceeds 18 inches in height. Grass or groundcover mowed to a height no greater than 6 inches. Rodent holes Any evidence of rodent holes if facility is acting as a dam or berm, or any evidence of water piping through dam or berm via rodent holes. Rodents removed or destroyed and dam or berm repaired. Tree growth Tree growth threatens integrity of slopes, does not allow maintenance access, or interferes with maintenance activity. If trees are not a threat or not interfering with access or maintenance, they do not need to be removed. Trees do not hinder facility performance or maintenance activities. Erosion Eroded damage over 2 inches deep where cause of damage is still present or where there is potential for continued erosion. Any erosion observed on a compacted slope. Slopes stabilized using appropriate erosion control measures. If erosion is occurring on compacted slope, a licensed civil engineer should be consulted to resolve source of erosion. Top or Side Slopes of Dam, Berm or Embankment Settlement Any part of a dam, berm or embankment that has settled 4 inches lower than the design elevation. Top or side slope restored to design dimensions. If settlement is significant, a licensed civil engineer should be consulted to determine the cause of the settlement. Sediment accumulation Accumulated sediment that exceeds 10% of the designed pond depth. Sediment cleaned out to designed pond shape and depth; pond reseeded if necessary to control erosion. Storage Area Liner damaged (If Applicable) Liner is visible or pond does not hold water as designed. Liner repaired or replaced. Sediment accumulation Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment. Trash and debris Trash and debris accumulated in inlet/outlet pipes (includes floatables and non-floatables). No trash or debris in pipes. Inlet/Outlet Pipe. Damaged Cracks wider than ½-inch at the joint of the inlet/outlet pipes or any evidence of soil entering at the joints of the inlet/outlet pipes. No cracks more than ¼-inch wide at the joint of the inlet/outlet pipe. Tree growth Tree growth impedes flow or threatens stability of spillway. Trees removed. Emergency Overflow/Spillway Rock missing Only one layer of rock exists above native soil in area five square feet or larger or any exposure of native soil on the spillway. Spillway restored to design standards. APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES 2009 Surface Water Design Manual – Appendix A 1/9/2009 A-3 NO. 2 – INFILTRATION FACILITIES Maintenance Component Defect or Problem Conditions When Maintenance Is Needed Results Expected When Maintenance Is Performed Trash and debris Any trash and debris which exceed 1 cubic foot per 1,000 square feet (this is about equal to the amount of trash it would take to fill up one standard size office garbage can). In general, there should be no visual evidence of dumping. Trash and debris cleared from site. Noxious weeds Any noxious or nuisance vegetation which may constitute a hazard to County personnel or the public. Noxious and nuisance vegetation removed according to applicable regulations. No danger of noxious vegetation where County personnel or the public might normally be. Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Site Grass/groundcover Grass or groundcover exceeds 18 inches in height. Grass or groundcover mowed to a height no greater than 6 inches. Rodent holes Any evidence of rodent holes if facility is acting as a dam or berm, or any evidence of water piping through dam or berm via rodent holes. Rodents removed or destroyed and dam or berm repaired. Tree growth Tree growth threatens integrity of dams, berms or slopes, does not allow maintenance access, or interferes with maintenance activity. If trees are not a threat to dam, berm, or embankment integrity or not interfering with access or maintenance, they do not need to be removed. Trees do not hinder facility performance or maintenance activities. Erosion Eroded damage over 2 inches deep where cause of damage is still present or where there is potential for continued erosion. Any erosion observed on a compacted slope. Slopes stabilized using appropriate erosion control measures. If erosion is occurring on compacted slope, a licensed civil engineer should be consulted to resolve source of erosion. Infiltration Pond, Top or Side Slopes of Dam, Berm or Embankment Settlement Any part of a dam, berm or embankment that has settled 4 inches lower than the design elevation. Top or side slope restored to design dimensions. If settlement is significant, a licensed civil engineer should be consulted to determine the cause of the settlement. Infiltration Pond, Tank, Vault, Trench, or Small Basin Storage Area Sediment accumulation If two inches or more sediment is present or a percolation test indicates facility is working at or less than 90% of design. Facility infiltrates as designed. Plugged air vent Any blockage of the vent. Tank or vault freely vents. Tank bent out of shape Any part of tank/pipe is bent out of shape more than 10% of its design shape. Tank repaired or replaced to design. Infiltration Tank Structure Gaps between sections, damaged joints or cracks or tears in wall A gap wider than ½-inch at the joint of any tank sections or any evidence of soil particles entering the tank at a joint or through a wall. No water or soil entering tank through joints or walls. Infiltration Vault Structure Damage to wall, frame, bottom, and/or top slab Cracks wider than ½-inch, any evidence of soil entering the structure through cracks or qualified inspection personnel determines that the vault is not structurally sound. Vault is sealed and structurally sound. APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES 1/9/2009 2009 Surface Water Design Manual – Appendix A A-4 NO. 2 – INFILTRATION FACILITIES Maintenance Component Defect or Problem Conditions When Maintenance Is Needed Results Expected When Maintenance Is Performed Sediment accumulation Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment. Trash and debris Trash and debris accumulated in inlet/outlet pipes (includes floatables and non-floatables). No trash or debris in pipes. Inlet/Outlet Pipes Damaged Cracks wider than ½-inch at the joint of the inlet/outlet pipes or any evidence of soil entering at the joints of the inlet/outlet pipes. No cracks more than ¼-inch wide at the joint of the inlet/outlet pipe. Cover/lid not in place Cover/lid is missing or only partially in place. Any open manhole requires immediate maintenance. Manhole access covered. Locking mechanism not working Mechanism cannot be opened by one maintenance person with proper tools. Bolts cannot be seated. Self-locking cover/lid does not work. Mechanism opens with proper tools. Cover/lid difficult to remove One maintenance person cannot remove cover/lid after applying 80 lbs of lift. Cover/lid can be removed and reinstalled by one maintenance person. Access Manhole Ladder rungs unsafe Missing rungs, misalignment, rust, or cracks. Ladder meets design standards. Allows maintenance person safe access. Damaged or difficult to open Large access doors or plates cannot be opened/removed using normal equipment. Replace or repair access door so it can opened as designed. Gaps, doesn't cover completely Large access doors not flat and/or access opening not completely covered. Doors close flat and covers access opening completely. Large access doors/plate Lifting Rings missing, rusted Lifting rings not capable of lifting weight of door or plate. Lifting rings sufficient to lift or remove door or plate. Infiltration Pond, Tank, Vault, Trench, or Small Basin Filter Bags Plugged Filter bag more than 1/2 full. Replace filter bag or redesign system. Infiltration Pond, Tank, Vault, Trench, or Small Basin Pre- settling Ponds and Vaults Sediment accumulation 6" or more of sediment has accumulated. Pre-settling occurs as designed Infiltration Pond, Rock Filter Plugged High water level on upstream side of filter remains for extended period of time or little or no water flows through filter during heavy rain storms. Rock filter replaced evaluate need for filter and remove if not necessary. Rock missing Only one layer of rock exists above native soil in area five square feet or larger, or any exposure of native soil at the top of out flow path of spillway. Rip-rap on inside slopes need not be replaced. Spillway restored to design standards. Infiltration Pond Emergency Overflow Spillway Tree growth Tree growth impedes flow or threatens stability of spillway. Trees removed. APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES 2009 Surface Water Design Manual – Appendix A 1/9/2009 A-5 NO. 3 – DETENTION TANKS AND VAULTS Maintenance Component Defect or Problem Conditions When Maintenance is Needed Results Expected When Maintenance is Performed Trash and debris Any trash and debris which exceed 1 cubic foot per 1,000 square feet (this is about equal to the amount of trash it would take to fill up one standard size office garbage can). In general, there should be no visual evidence of dumping. Trash and debris cleared from site. Noxious weeds Any noxious or nuisance vegetation which may constitute a hazard to County personnel or the public. Noxious and nuisance vegetation removed according to applicable regulations. No danger of noxious vegetation where County personnel or the public might normally be. Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Site Grass/groundcover Grass or groundcover exceeds 18 inches in height. Grass or groundcover mowed to a height no greater than 6 inches. Trash and debris Any trash and debris accumulated in vault or tank (includes floatables and non-floatables). No trash or debris in vault. Tank or Vault Storage Area Sediment accumulation Accumulated sediment depth exceeds 10% of the diameter of the storage area for ½ length of storage vault or any point depth exceeds 15% of diameter. Example: 72-inch storage tank would require cleaning when sediment reaches depth of 7 inches for more than ½ length of tank. All sediment removed from storage area. Plugged air vent Any blockage of the vent. Tank or vault freely vents. Tank bent out of shape Any part of tank/pipe is bent out of shape more than 10% of its design shape. Tank repaired or replaced to design. Tank Structure Gaps between sections, damaged joints or cracks or tears in wall A gap wider than ½-inch at the joint of any tank sections or any evidence of soil particles entering the tank at a joint or through a wall. No water or soil entering tank through joints or walls. Vault Structure Damage to wall, frame, bottom, and/or top slab Cracks wider than ½-inch, any evidence of soil entering the structure through cracks or qualified inspection personnel determines that the vault is not structurally sound. Vault is sealed and structurally sound. Sediment accumulation Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment. Trash and debris Trash and debris accumulated in inlet/outlet pipes (includes floatables and non-floatables). No trash or debris in pipes. Inlet/Outlet Pipes Damaged Cracks wider than ½-inch at the joint of the inlet/outlet pipes or any evidence of soil entering at the joints of the inlet/outlet pipes. No cracks more than ¼-inch wide at the joint of the inlet/outlet pipe. APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES 1/9/2009 2009 Surface Water Design Manual – Appendix A A-6 NO. 3 – DETENTION TANKS AND VAULTS Maintenance Component Defect or Problem Conditions When Maintenance is Needed Results Expected When Maintenance is Performed Cover/lid not in place Cover/lid is missing or only partially in place. Any open manhole requires immediate maintenance. Manhole access covered. Locking mechanism not working Mechanism cannot be opened by one maintenance person with proper tools. Bolts cannot be seated. Self-locking cover/lid does not work. Mechanism opens with proper tools. Cover/lid difficult to remove One maintenance person cannot remove cover/lid after applying 80 lbs of lift. Cover/lid can be removed and reinstalled by one maintenance person. Access Manhole Ladder rungs unsafe Missing rungs, misalignment, rust, or cracks. Ladder meets design standards. Allows maintenance person safe access. Damaged or difficult to open Large access doors or plates cannot be opened/removed using normal equipment. Replace or repair access door so it can opened as designed. Gaps, doesn't cover completely Large access doors not flat and/or access opening not completely covered. Doors close flat and covers access opening completely. Large access doors/plate Lifting Rings missing, rusted Lifting rings not capable of lifting weight of door or plate. Lifting rings sufficient to lift or remove door or plate. APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES 2009 Surface Water Design Manual – Appendix A 1/9/2009 A-7 NO. 4 – CONTROL STRUCTURE/FLOW RESTRICTOR Maintenance Component Defect or Problem Condition When Maintenance is Needed Results Expected When Maintenance is Performed Trash or debris of more than ½ cubic foot which is located immediately in front of the structure opening or is blocking capacity of the structure by more than 10%. No Trash or debris blocking or potentially blocking entrance to structure. Trash or debris in the structure that exceeds 1/3 the depth from the bottom of basin to invert the lowest pipe into or out of the basin. No trash or debris in the structure. Trash and debris Deposits of garbage exceeding 1 cubic foot in volume. No condition present which would attract or support the breeding of insects or rodents. Sediment Sediment exceeds 60% of the depth from the bottom of the structure to the invert of the lowest pipe into or out of the structure or the bottom of the FROP-T section or is within 6 inches of the invert of the lowest pipe into or out of the structure or the bottom of the FROP-T section. Sump of structure contains no sediment. Corner of frame extends more than ¾ inch past curb face into the street (If applicable). Frame is even with curb. Top slab has holes larger than 2 square inches or cracks wider than ¼ inch. Top slab is free of holes and cracks. Damage to frame and/or top slab Frame not sitting flush on top slab, i.e., separation of more than ¾ inch of the frame from the top slab. Frame is sitting flush on top slab. Cracks wider than ½ inch and longer than 3 feet, any evidence of soil particles entering structure through cracks, or maintenance person judges that structure is unsound. Structure is sealed and structurally sound. Cracks in walls or bottom Cracks wider than ½ inch and longer than 1 foot at the joint of any inlet/outlet pipe or any evidence of soil particles entering structure through cracks. No cracks more than 1/4 inch wide at the joint of inlet/outlet pipe. Settlement/ misalignment Structure has settled more than 1 inch or has rotated more than 2 inches out of alignment. Basin replaced or repaired to design standards. Damaged pipe joints Cracks wider than ½-inch at the joint of the inlet/outlet pipes or any evidence of soil entering the structure at the joint of the inlet/outlet pipes. No cracks more than ¼-inch wide at the joint of inlet/outlet pipes. Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Structure Ladder rungs missing or unsafe Ladder is unsafe due to missing rungs, misalignment, rust, cracks, or sharp edges. Ladder meets design standards and allows maintenance person safe access. T section is not securely attached to structure wall and outlet pipe structure should support at least 1,000 lbs of up or down pressure. T section securely attached to wall and outlet pipe. Structure is not in upright position (allow up to 10% from plumb). Structure in correct position. Connections to outlet pipe are not watertight or show signs of deteriorated grout. Connections to outlet pipe are water tight; structure repaired or replaced and works as designed. FROP-T Section Damage Any holes—other than designed holes—in the structure. Structure has no holes other than designed holes. Cleanout Gate Damaged or missing Cleanout gate is missing. Replace cleanout gate. APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES 1/9/2009 2009 Surface Water Design Manual – Appendix A A-8 NO. 4 – CONTROL STRUCTURE/FLOW RESTRICTOR Maintenance Component Defect or Problem Condition When Maintenance is Needed Results Expected When Maintenance is Performed Cleanout gate is not watertight. Gate is watertight and works as designed. Gate cannot be moved up and down by one maintenance person. Gate moves up and down easily and is watertight. Chain/rod leading to gate is missing or damaged. Chain is in place and works as designed. Damaged or missing Control device is not working properly due to missing, out of place, or bent orifice plate. Plate is in place and works as designed. Orifice Plate Obstructions Any trash, debris, sediment, or vegetation blocking the plate. Plate is free of all obstructions and works as designed. Obstructions Any trash or debris blocking (or having the potential of blocking) the overflow pipe. Pipe is free of all obstructions and works as designed. Overflow Pipe Deformed or damaged lip Lip of overflow pipe is bent or deformed. Overflow pipe does not allow overflow at an elevation lower than design Sediment accumulation Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment. Trash and debris Trash and debris accumulated in inlet/outlet pipes (includes floatables and non-floatables). No trash or debris in pipes. Inlet/Outlet Pipe Damaged Cracks wider than ½-inch at the joint of the inlet/outlet pipes or any evidence of soil entering at the joints of the inlet/outlet pipes. No cracks more than ¼-inch wide at the joint of the inlet/outlet pipe. Unsafe grate opening Grate with opening wider than 7/8 inch. Grate opening meets design standards. Trash and debris Trash and debris that is blocking more than 20% of grate surface. Grate free of trash and debris. footnote to guidelines for disposal Metal Grates (If Applicable) Damaged or missing Grate missing or broken member(s) of the grate. Grate is in place and meets design standards. Cover/lid not in place Cover/lid is missing or only partially in place. Any open structure requires urgent maintenance. Cover/lid protects opening to structure. Locking mechanism Not Working Mechanism cannot be opened by one maintenance person with proper tools. Bolts cannot be seated. Self-locking cover/lid does not work. Mechanism opens with proper tools. Manhole Cover/Lid Cover/lid difficult to Remove One maintenance person cannot remove cover/lid after applying 80 lbs. of lift. Cover/lid can be removed and reinstalled by one maintenance person. APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES 2009 Surface Water Design Manual – Appendix A 1/9/2009 A-9 NO. 5 – CATCH BASINS AND MANHOLES Maintenance Component Defect or Problem Condition When Maintenance is Needed Results Expected When Maintenance is Performed Sediment Sediment exceeds 60% of the depth from the bottom of the catch basin to the invert of the lowest pipe into or out of the catch basin or is within 6 inches of the invert of the lowest pipe into or out of the catch basin. Sump of catch basin contains no sediment. Trash or debris of more than ½ cubic foot which is located immediately in front of the catch basin opening or is blocking capacity of the catch basin by more than 10%. No Trash or debris blocking or potentially blocking entrance to catch basin. Trash or debris in the catch basin that exceeds 1/3 the depth from the bottom of basin to invert the lowest pipe into or out of the basin. No trash or debris in the catch basin. Dead animals or vegetation that could generate odors that could cause complaints or dangerous gases (e.g., methane). No dead animals or vegetation present within catch basin. Trash and debris Deposits of garbage exceeding 1 cubic foot in volume. No condition present which would attract or support the breeding of insects or rodents. Corner of frame extends more than ¾ inch past curb face into the street (If applicable). Frame is even with curb. Top slab has holes larger than 2 square inches or cracks wider than ¼ inch. Top slab is free of holes and cracks. Damage to frame and/or top slab Frame not sitting flush on top slab, i.e., separation of more than ¾ inch of the frame from the top slab. Frame is sitting flush on top slab. Cracks wider than ½ inch and longer than 3 feet, any evidence of soil particles entering catch basin through cracks, or maintenance person judges that catch basin is unsound. Catch basin is sealed and structurally sound. Cracks in walls or bottom Cracks wider than ½ inch and longer than 1 foot at the joint of any inlet/outlet pipe or any evidence of soil particles entering catch basin through cracks. No cracks more than 1/4 inch wide at the joint of inlet/outlet pipe. Settlement/ misalignment Catch basin has settled more than 1 inch or has rotated more than 2 inches out of alignment. Basin replaced or repaired to design standards. Damaged pipe joints Cracks wider than ½-inch at the joint of the inlet/outlet pipes or any evidence of soil entering the catch basin at the joint of the inlet/outlet pipes. No cracks more than ¼-inch wide at the joint of inlet/outlet pipes. Structure Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Sediment accumulation Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment. Trash and debris Trash and debris accumulated in inlet/outlet pipes (includes floatables and non-floatables). No trash or debris in pipes. Inlet/Outlet Pipe Damaged Cracks wider than ½-inch at the joint of the inlet/outlet pipes or any evidence of soil entering at the joints of the inlet/outlet pipes. No cracks more than ¼-inch wide at the joint of the inlet/outlet pipe. APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES 1/9/2009 2009 Surface Water Design Manual – Appendix A A-10 NO. 5 – CATCH BASINS AND MANHOLES Maintenance Component Defect or Problem Condition When Maintenance is Needed Results Expected When Maintenance is Performed Unsafe grate opening Grate with opening wider than 7/8 inch. Grate opening meets design standards. Trash and debris Trash and debris that is blocking more than 20% of grate surface. Grate free of trash and debris. footnote to guidelines for disposal Metal Grates (Catch Basins) Damaged or missing Grate missing or broken member(s) of the grate. Any open structure requires urgent maintenance. Grate is in place and meets design standards. Cover/lid not in place Cover/lid is missing or only partially in place. Any open structure requires urgent maintenance. Cover/lid protects opening to structure. Locking mechanism Not Working Mechanism cannot be opened by one maintenance person with proper tools. Bolts cannot be seated. Self-locking cover/lid does not work. Mechanism opens with proper tools. Manhole Cover/Lid Cover/lid difficult to Remove One maintenance person cannot remove cover/lid after applying 80 lbs. of lift. Cover/lid can be removed and reinstalled by one maintenance person.