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HomeMy WebLinkAboutDrainage Report 11-02-18 STORMWATER TECHNICALREPORT For: ONYXSUITES Address: 10239 Commerce Drive, Carmel, IN 46032 Part of NE/4, Section 07, Township 17 North, Range 3 East, Clay Township, Hamilton County, IN Project #W180330 Prepared For: Mr. David B. Klain DB Klain Construction, LLC 2159 Glebe Street, Suite 200 Carmel, IN 46032 Phone: (317) 846-9992 david@dbklain.com Prepared By: Russell Webster, EIT CheckedBy: Mark Thorpe, RLA Certified By:Steven Scott Rucker, PE Date: September 21, 2018 Revised: 10505 North College Avenue |Indianapolis, IN 46280 |.www.weihe.net |(317) 846-6611 |(800) 452-6408 |Fax: (317) 843-0546 Allan H. Weihe, P.E., L.S., - Founder Report Prepared For: Commerce Suites Carmel, IN Project #W180330 TABLE OF CONTENTS 1.Project Narrative Existing Conditions Proposed Conditions Water Quality discussion Location Maps 2.Pre-Developed Conditions Basin Map Supporting Calculations 3.Post-Developed Calculations Basin Map Supporting Calculations 4.Pipe Sizing Calculations Basin Map Supporting Calculations Pipe Design Calculations 5.Water Quality Calculations Water Quality Calculations Details PROFESSIONAL CERTIFICATION The following report and accompanying computations have been developed by me or under my direct supervision. LOCATION MAP–NO SCALE DENOTES PROJECT LOCATION Onyx Suites Project: Time of Concentration September 10, 2018 Date: w180330 Job No: SSR Checked By: RLW Prepared By: BASIN:EX-1 Sheet Flow(Applicable to T only)Segment ID c 1. Surface Description …………………Grass Dense 2. Manning's roughness coeff., n ………..0.24 3. Flow length, L (total L < 300 ft) ………. ft150 …………….. 4. Two-yr 24-hr rainfall, Pin2.64 2 5. Land slope, s ………………………ft/ft0.08 0.8 6. T = 0.007 (nL)Compute T … hr0.2080=0.2080 tt 0.50.4 P s 2 Shallow Concentrated FlowSegment ID 7. Surface Description (paved or unpaved) … 8. Flow length, L ……………………….ft 9. Watercourse slope, s ………………..ft/ft 10. Average velocity, V ………………….ft/s 11. T = LCompute T … hr=0.0000 tt 3600 V Segment ID Channel Flow 2 ft 12. Cross sectional flow area, a ………….. 13. Wetted Perimeter, p ………………… ft w 14. Hydraulic radius, r = a/pCompute r …ft w 15. Channel slope, s …………………….ft/ft 16. Manning's roughness coeff., n ………… 2/31/2 17. V = (1.49 r s) / n Compute V …ft/s 18. Flow length, L ……………………….ft 19. T = LCompute T … hr=0.0000 tt 3600 V or T (add T in steps 6, 11, and 19) ……………………… 20. Watershed or subarea T hr0.2080 ctt min12.48 Onyx Suites Project: Pre Developed Runoff Calculations September 5, 2018 Date: w180330 Job No: SSR Checked By: RLW Prepared By: BASIN:EX-2 Soil GroupCover typeCNArea (SF)Area (Ac.) DOpen Space8448780.11 Impervious Areas9881280.19 TOTAL=93130060.30 BASIN:EX-1 Soil GroupCover typeCNArea (SF)Area (Ac.) DOpen Space841065372.45 0.00 TOTAL=841065372.45 Watershed Model Schematic Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5 1 - EX-1 2 - EX-2 Project: H:\\2018\\W180330\\Engineering\\design\\drainage\\pond modeling\\W180330 ex1 ex2.gpwMonday, 09 / 10 / 2018 Hydrograph Return Period Recap Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5 Hyd.HydrographInflowPeak Outflow (cfs)Hydrograph No.typehyd(s)Description (origin)1-yr2-yr3-yr5-yr10-yr25-yr50-yr100-yr 1SCS Runoff------0.4014.376--------------7.849--------------16.00EX-1 2SCS Runoff------0.2290.936--------------1.440--------------2.554EX-2 Proj. file: H:\\2018\\W180330\\Engineering\\design\\drainage\\pond modeling\\W180330 ex1 ex2.gpwMonday, 09 / 10 / 2018 Hydrograph Summary Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5 Hyd.HydrographPeakTimeTime toHyd.InflowMaximumTotalHydrograph No.typeflowintervalPeakvolumehyd(s)elevationstrge usedDescription (origin)(cfs)(min)(min)(cuft)(ft)(cuft) 1SCS Runoff0.40127221,392------------------EX-1 2SCS Runoff0.2292718460------------------EX-2 H:\\2018\\W180330\\Engineering\\design\\drainage\\pond modeling\\W180330 ex1 ex2.gpwReturn Period: 1 YearMonday, 09 / 10 / 2018 Hydrograph Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5Monday, 09 / 10 / 2018 Hyd. No. 1 EX-1 Hydrograph type= SCS RunoffPeak discharge= 0.401 cfs Storm frequency= 1 yrsTime to peak= 722 min Time interval= 2 minHyd. volume= 1,392 cuft Drainage area= 2.450 acCurve number= 84 Basin Slope= 0.0 %Hydraulic length= 0 ft Tc method= UserTime of conc. (Tc)= 12.00 min Total precip.= 1.00 inDistribution= Type II Storm duration= 24 hrsShape factor= 484 EX-1 Q (cfs)Q (cfs) Hyd. No. 1 -- 1 Year 0.500.50 0.450.45 0.400.40 0.350.35 0.300.30 0.250.25 0.200.20 0.150.15 0.100.10 0.050.05 0.000.00 012024036048060072084096010801200132014401560 Time (min) Hyd No. 1 Hydrograph Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5Monday, 09 / 10 / 2018 Hyd. No. 2 EX-2 Hydrograph type= SCS RunoffPeak discharge= 0.229 cfs Storm frequency= 1 yrsTime to peak= 718 min Time interval= 2 minHyd. volume= 460 cuft Drainage area= 0.300 acCurve number= 93 Basin Slope= 0.0 %Hydraulic length= 0 ft Tc method= UserTime of conc. (Tc)= 5.00 min Total precip.= 1.00 inDistribution= Type II Storm duration= 24 hrsShape factor= 484 EX-2 Q (cfs)Q (cfs) Hyd. No. 2 -- 1 Year 0.500.50 0.450.45 0.400.40 0.350.35 0.300.30 0.250.25 0.200.20 0.150.15 0.100.10 0.050.05 0.000.00 012024036048060072084096010801200132014401560 Time (min) Hyd No. 2 Hydrograph Summary Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5 Hyd.HydrographPeakTimeTime toHyd.InflowMaximumTotalHydrograph No.typeflowintervalPeakvolumehyd(s)elevationstrge usedDescription (origin)(cfs)(min)(min)(cuft)(ft)(cuft) 1SCS Runoff4.376272011,386------------------EX-1 2SCS Runoff0.93627161,971------------------EX-2 H:\\2018\\W180330\\Engineering\\design\\drainage\\pond modeling\\W180330 ex1 ex2.gpwReturn Period: 2 YearMonday, 09 / 10 / 2018 Hydrograph Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5Monday, 09 / 10 / 2018 Hyd. No. 1 EX-1 Hydrograph type= SCS RunoffPeak discharge= 4.376 cfs Storm frequency= 2 yrsTime to peak= 720 min Time interval= 2 minHyd. volume= 11,386 cuft Drainage area= 2.450 acCurve number= 84 Basin Slope= 0.0 %Hydraulic length= 0 ft Tc method= UserTime of conc. (Tc)= 12.00 min Total precip.= 2.66 inDistribution= Type II Storm duration= 24 hrsShape factor= 484 EX-1 Q (cfs)Q (cfs) Hyd. No. 1 -- 2 Year 5.005.00 4.004.00 3.003.00 2.002.00 1.001.00 0.000.00 012024036048060072084096010801200132014401560 Time (min) Hyd No. 1 Hydrograph Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5Monday, 09 / 10 / 2018 Hyd. No. 2 EX-2 Hydrograph type= SCS RunoffPeak discharge= 0.936 cfs Storm frequency= 2 yrsTime to peak= 716 min Time interval= 2 minHyd. volume= 1,971 cuft Drainage area= 0.300 acCurve number= 93 Basin Slope= 0.0 %Hydraulic length= 0 ft Tc method= UserTime of conc. (Tc)= 5.00 min Total precip.= 2.66 inDistribution= Type II Storm duration= 24 hrsShape factor= 484 EX-2 Q (cfs)Q (cfs) Hyd. No. 2 -- 2 Year 1.001.00 0.900.90 0.800.80 0.700.70 0.600.60 0.500.50 0.400.40 0.300.30 0.200.20 0.100.10 0.000.00 012024036048060072084096010801200 Time (min) Hyd No. 2 Hydrograph Summary Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5 Hyd.HydrographPeakTimeTime toHyd.InflowMaximumTotalHydrograph No.typeflowintervalPeakvolumehyd(s)elevationstrge usedDescription (origin)(cfs)(min)(min)(cuft)(ft)(cuft) 1SCS Runoff7.849272020,379------------------EX-1 2SCS Runoff1.44027163,119------------------EX-2 H:\\2018\\W180330\\Engineering\\design\\drainage\\pond modeling\\W180330 ex1 ex2.gpwReturn Period: 10 YearMonday, 09 / 10 / 2018 Hydrograph Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5Monday, 09 / 10 / 2018 Hyd. No. 1 EX-1 Hydrograph type= SCS RunoffPeak discharge= 7.849 cfs Storm frequency= 10 yrsTime to peak= 720 min Time interval= 2 minHyd. volume= 20,379 cuft Drainage area= 2.450 acCurve number= 84 Basin Slope= 0.0 %Hydraulic length= 0 ft Tc method= UserTime of conc. (Tc)= 12.00 min Total precip.= 3.83 inDistribution= Type II Storm duration= 24 hrsShape factor= 484 EX-1 Q (cfs)Q (cfs) Hyd. No. 1 -- 10 Year 8.008.00 6.006.00 4.004.00 2.002.00 0.000.00 012024036048060072084096010801200132014401560 Time (min) Hyd No. 1 Hydrograph Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5Monday, 09 / 10 / 2018 Hyd. No. 2 EX-2 Hydrograph type= SCS RunoffPeak discharge= 1.440 cfs Storm frequency= 10 yrsTime to peak= 716 min Time interval= 2 minHyd. volume= 3,119 cuft Drainage area= 0.300 acCurve number= 93 Basin Slope= 0.0 %Hydraulic length= 0 ft Tc method= UserTime of conc. (Tc)= 5.00 min Total precip.= 3.83 inDistribution= Type II Storm duration= 24 hrsShape factor= 484 EX-2 Q (cfs)Q (cfs) Hyd. No. 2 -- 10 Year 2.002.00 1.001.00 0.000.00 012024036048060072084096010801200 Time (min) Hyd No. 2 Hydrograph Summary Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5 Hyd.HydrographPeakTimeTime toHyd.InflowMaximumTotalHydrograph No.typeflowintervalPeakvolumehyd(s)elevationstrge usedDescription (origin)(cfs)(min)(min)(cuft)(ft)(cuft) 1SCS Runoff16.00272042,452------------------EX-1 2SCS Runoff2.55427165,755------------------EX-2 H:\\2018\\W180330\\Engineering\\design\\drainage\\pond modeling\\W180330 ex1 ex2.gpwReturn Period: 100 YearMonday, 09 / 10 / 2018 Hydrograph Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5Monday, 09 / 10 / 2018 Hyd. No. 1 EX-1 Hydrograph type= SCS RunoffPeak discharge= 16.00 cfs Storm frequency= 100 yrsTime to peak= 720 min Time interval= 2 minHyd. volume= 42,452 cuft Drainage area= 2.450 acCurve number= 84 Basin Slope= 0.0 %Hydraulic length= 0 ft Tc method= UserTime of conc. (Tc)= 12.00 min Total precip.= 6.46 inDistribution= Type II Storm duration= 24 hrsShape factor= 484 EX-1 Q (cfs)Q (cfs) Hyd. No. 1 -- 100 Year 18.0018.00 15.0015.00 12.0012.00 9.009.00 6.006.00 3.003.00 0.000.00 012024036048060072084096010801200132014401560 Time (min) Hyd No. 1 Hydrograph Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5Monday, 09 / 10 / 2018 Hyd. No. 2 EX-2 Hydrograph type= SCS RunoffPeak discharge= 2.554 cfs Storm frequency= 100 yrsTime to peak= 716 min Time interval= 2 minHyd. volume= 5,755 cuft Drainage area= 0.300 acCurve number= 93 Basin Slope= 0.0 %Hydraulic length= 0 ft Tc method= UserTime of conc. (Tc)= 5.00 min Total precip.= 6.46 inDistribution= Type II Storm duration= 24 hrsShape factor= 484 EX-2 Q (cfs)Q (cfs) Hyd. No. 2 -- 100 Year 3.003.00 2.002.00 1.001.00 0.000.00 012024036048060072084096010801200 Time (min) Hyd No. 2 Onyx Suites Project: Post Developed Runoff Calculations Date:September 19, 2018 w180330 Job No: SSR Checked By: RLW Prepared By: BASIN:206 Cover typeArea (SF)Area (Ac.)C Impervious, Pavement77200.180.85 Impervious, Roof 00.000.90 Pervious, Grass66690.150.25 TOTAL=143890.330.57 BASIN:205 Cover type Area (SF)Area (Ac.)C Impervious, Pavement 89520.210.85 Impervious, Roof00.000.90 Pervious, Grass25960.060.25 TOTAL=115480.270.72 BASIN:204 Cover typeArea (SF)Area (Ac.)C Impervious, Pavement119440.270.85 Impervious, Roof79770.180.90 Pervious, Grass25790.060.25 TOTAL=225000.520.80 BASIN:203 Cover typeArea (SF)Area (Ac.)C Impervious, Pavement238720.550.85 Impervious, Roof00.000.90 Pervious, Grass27710.060.25 TOTAL=266430.610.79 City of Indianapolis Stormwater Quality Unit (SQU) Selection Guide (Check http://www.indy.gov/eGov/City/DPW/Business/Specs/Pages/UpdatedStormWaterManual.aspx for current Selection Guide) Table 1 Rate Based SQUs Performance Matrix for Manufactured SQUs that remove 80% or more of Test Particles PLEASE NOTE: All SQUs shall be configured as off-line units unless approved for on-line use. On-line units must document the peak 10-year flow (per the Stormwater Design and Construction Specification Manual) is less than the approved maximum10-yr flow rate. Table 1 Max Max 10-yr Treatment On-Line Manufactured SQU System Model Flow Flow Rate SQU (cfs) (cfs) STC 450 0.37 N/A STC 900 0.83 N/A STC1200 0.83 N/A STC 1800 0.83 N/A STC 2400 1.38 N/A Stormceptor® STC 3600 1.38 N/A 2,3 STC 4800 2.30 N/A STC 6000 2.30 N/A STC 7200 3.22 N/A STC 11000 4.59 N/A STC 13000 4.59 N/A STC 16000 6.43 N/A 4 Foot Diameter 1.3 N/A 6 Foot Diameter 3.58 N/A Downstream 2 Defender® 8 Foot Diameter 7.35 N/A 10 Foot Diameter 12.85 N/A VS30 0.28 N/A VS40 0.58 N/A VS50 1.01 N/A 2,3 VortSentry® VS60 1.60 N/A VS70 2.35 N/A VS80 3.28 N/A 1000 0.49 N/A 2,3 Vortechs® 2000 1.00 N/A 3000 1.75 N/A Pg. 1 7/12/18 Version 12.2 City of Indianapolis Stormwater Quality Unit (SQU) Selection Guide Max Max 10-yr Treatment On-Line Manufactured SQU System Model Flow Flow Rate SQU (cfs) (cfs) 4000 2.76 N/A 5000 4.05 N/A 7000 5.66 N/A 9000 7.59 N/A 11000 9.88 N/A 16000 15.59 N/A PC1319 or 1319 CIP 19.04 N/A PC1421 or 1421 CIP 22.92 N/A 1522 CIP 27.23 N/A 1624 CIP 32.00 N/A 1726 CIP 37.24 N/A 1827 CIP 42.96 N/A 1929 CIP 49.17 N/A 2030 CIP 55.90 N/A 2131 CIP 63.15 N/A 2233 CIP 70.94 N/A 2334 CIP 79.28 N/A 2436 CIP 88.18 N/A 2538 CIP 97.66 N/A 2639 CIP 107.72 N/A 2740 CIP 118.37 N/A 2842 CIP 129.64 N/A 2943 CIP 141.53 N/A 3045 CIP 154.05 N/A 3146 CIP 167.21 N/A 3349 CIP 195.49 N/A 3958 CIP 296.83 N/A 4060 CIP 316.23 N/A AS-2 0.26 N/A AS-3 0.50 N/A AS-4 0.98 N/A AS-5 1.47 N/A ASAS--66 2.322.32 N/AN/A AS-7 3.40 N/A Aqua- 2,3 AS-8 4.75 N/A AS-9 6.38 N/A AS-10 8.30 N/A AS-11 10.54 N/A AS-12 13.10 N/A AS-13 16.00 N/A Pg. 2 7/12/18 Version 12.2 Watershed Model Schematic Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5 2 - PR-2 1 - PR-1 Project: W180330 pr1 pr2.gpwSunday, 09 / 9 / 2018 Hydrograph Return Period Recap Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5 Hyd.HydrographInflowPeak Outflow (cfs)Hydrograph No.typehyd(s)Description (origin)1-yr2-yr3-yr5-yr10-yr25-yr50-yr100-yr 1SCS Runoff------1.6245.727--------------8.579--------------14.89PR-1 2SCS Runoff------0.3201.934--------------3.209--------------6.087PR-2 Proj. file: W180330 pr1 pr2.gpwSunday, 09 / 9 / 2018 Hydrograph Summary Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5 Hyd.HydrographPeakTimeTime toHyd.InflowMaximumTotalHydrograph No.typeflowintervalPeakvolumehyd(s)elevationstrge usedDescription (origin)(cfs)(min)(min)(cuft)(ft)(cuft) 1SCS Runoff1.62427163,298------------------PR-1 2SCS Runoff0.3202718654------------------PR-2 W180330 pr1 pr2.gpwReturn Period: 1 YearSunday, 09 / 9 / 2018 Hydrograph Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2016 by Autodesk, Inc. v10.5Sunday, 09 / 9 / 2018 Hyd. No. 1 PR-1 Hydrograph type= SCS RunoffPeak discharge= 1.624 cfs Storm frequency= 1 yrsTime to peak= 716 min Time interval= 2 minHyd. volume= 3,298 cuft Drainage area= 1.720 acCurve number= 95 Basin Slope= 0.0 %Hydraulic length= 0 ft Tc method= UserTime of conc. (Tc)= 5.00 min Total precip.= 1.00 inDistribution= Type II Storm duration= 24 hrsShape factor= 484 PR-1 Q (cfs)Q (cfs) Hyd. No. 1 -- 1 Year 2.002.00 1.001.00 0.000.00 01202403604806007208409601080120013201440 Time (min) Hyd No. 1 City of Indianapolis Stormwater Quality Unit (SQU) Selection Guide (Check http://www.indy.gov/eGov/City/DPW/Business/Specs/Pages/UpdatedStormWaterManual.aspx for current Selection Guide) Table 1 Rate Based SQUs Performance Matrix for Manufactured SQUs that remove 80% or more of Test Particles PLEASE NOTE: All SQUs shall be configured as off-line units unless approved for on-line use. On-line units must document the peak 10-year flow (per the Stormwater Design and Construction Specification Manual) is less than the approved maximum10-yr flow rate. Table 1 Max Max 10-yr Treatment On-Line Manufactured SQU System Model Flow Flow Rate SQU (cfs) (cfs) STC 450 0.37 N/A STC 900 0.83 N/A STC1200 0.83 N/A STC 1800 0.83 N/A STC 2400 1.38 N/A Stormceptor® STC 3600 1.38 N/A 2,3 STC 4800 2.30 N/A STC 6000 2.30 N/A STC 7200 3.22 N/A STC 11000 4.59 N/A STC 13000 4.59 N/A STC 16000 6.43 N/A 4 Foot Diameter 1.3 N/A 6 Foot Diameter 3.58 N/A Downstream 2 Defender® 8 Foot Diameter 7.35 N/A 10 Foot Diameter 12.85 N/A VS30 0.28 N/A VS40 0.58 N/A VS50 1.01 N/A 2,3 VortSentry® VS60 1.60 N/A VS70 2.35 N/A VS80 3.28 N/A 1000 0.49 N/A 2,3 Vortechs® 2000 1.00 N/A 3000 1.75 N/A Pg. 1 7/12/18 Version 12.2 City of Indianapolis Stormwater Quality Unit (SQU) Selection Guide Max Max 10-yr Treatment On-Line Manufactured SQU System Model Flow Flow Rate SQU (cfs) (cfs) 4000 2.76 N/A 5000 4.05 N/A 7000 5.66 N/A 9000 7.59 N/A 11000 9.88 N/A 16000 15.59 N/A PC1319 or 1319 CIP 19.04 N/A PC1421 or 1421 CIP 22.92 N/A 1522 CIP 27.23 N/A 1624 CIP 32.00 N/A 1726 CIP 37.24 N/A 1827 CIP 42.96 N/A 1929 CIP 49.17 N/A 2030 CIP 55.90 N/A 2131 CIP 63.15 N/A 2233 CIP 70.94 N/A 2334 CIP 79.28 N/A 2436 CIP 88.18 N/A 2538 CIP 97.66 N/A 2639 CIP 107.72 N/A 2740 CIP 118.37 N/A 2842 CIP 129.64 N/A 2943 CIP 141.53 N/A 3045 CIP 154.05 N/A 3146 CIP 167.21 N/A 3349 CIP 195.49 N/A 3958 CIP 296.83 N/A 4060 CIP 316.23 N/A AS-2 0.26 N/A AS-3 0.50 N/A AS-4 0.98 N/A AS-5 1.47 N/A AS-6 2.32 N/A AS-7 3.40 N/A Aqua- 2,3 AS-8 4.75 N/A AS-9 6.38 N/A AS-10 8.30 N/A AS-11 10.54 N/A AS-12 13.10 N/A AS-13 16.00 N/A Pg. 2 7/12/18 Version 12.2 City of Indianapolis Stormwater Quality Unit (SQU) Selection Guide Max Max 10-yr Treatment On-Line Manufactured SQU System Model Flow Flow Rate SQU (cfs) (cfs) 3 CDS4 1.10 N/A , 2 s CDS5 1.10 N/A e i e g n S CDS6 3.85 N/A o i l l D f o f CDS7 4.49 N/A C n O h cCDS8 6.60 N/A e T CDS10 16.02 N/A 3620WQB 0.7 N/A 3640WQB 1.6 N/A 4220WQB 0.86 N/A ADS / Hancor 4240WQB 1.83 N/A Stormwater 4820WQB 1.13 N/A 2 Quality Units 4840WQB 2.39 N/A 6020WQB 1.47 N/A 6040WQB 3.12 N/A DVS -36 0.24 N/A DVS -48 0.50 N/A DVS -60 0.87 N/A KriStar DVS -72 1.38 N/A 2 FloGard DVS -96 2.83 N/A DVS -120 4.94 N/A DVS -144 7.79 N/A 0.5K 0.22 N/A 1K 0.28 N/A 2 Baysaver3K 0.92 N/A 5K 1.90 N/A 10K 3.43 N/A SSWQ-2x4 0.36 N/A SSWQ-3x6 0.80 N/A SSWQ-3x8 1.07 N/A 2 StormTrap® SSWQ-4x8 1.43 N/A SSWQ-4x9 1.61 N/A SSWQ-5x10 2.23 N/A SSWQ-5x12 2.68 N/A SSWQ-6x12 3.21 N/A STWQ-2 3.52 N/A STWQ-3 5.29 N/A STWQ-4 7.05 N/A STWQ-5 9.03 N/A StormTrap®STWQ-6a 10.80 N/A STWQ-6b 10.76 N/A STWQ-7a 12.78 N/A STWQ-7b 12.89 N/A STWQ-8 15.10 N/A STWQ-9 16.86 N/A STWQ-10 19.00 N/A Pg. 3 7/12/18 Version 12.2 City of Indianapolis Stormwater Quality Unit (SQU) Selection Guide Max Max 10-yr Treatment On-Line Manufactured SQU System Model Flow Flow Rate SQU (cfs) (cfs) STWQ-12 22.97 N/A STWQ-55 109.57 N/A STWQ-105 211.16 N/A STWQ-153 308.99 N/A STWQ-200 403.80 N/A STWQ-I 4.12 N/A STWQ-II 1.95 N/A STWQ-III 3.93 N/A STWQ-IV 1.85 N/A STWQ-V 1.85 N/A STWQ-VI 3.75 N/A STWQ-VII 1.76 N/A WQU3620 0.6 N/A WQU3640 1.28 N/A WQU4220 0.70 N/A WQU4240 1.49 N/A 2 Prinsco WQU4820 0.92 N/A WQU4840 1.95 N/A WQU6020 1.18 N/A WQU6040 2.51 N/A 4 Foot Diameter 0.70 N/A First Defense 2,3 6 Foot Diameter 2.00 N/A SWQU 36X20-B 0.75 N/A SWQU 36X40-B 1.5 N/A SWQU 42X20-B 0.8 N/A SWQU 42X40-B 1.8 N/A 2 Haviland SWQU 48X20-B 1.1 N/A SWQU 48X40-B 2.4 N/A SWQU 60X20-B 1.4 N/A SWQU 60X40-B 3.1 N/A 3 Foot Diameter 0.73 N/A 4 Foot Diameter 1.50 N/A First Defense 5 Foot Diameter 2.62 N/A High 6 Foot Diameter 4.13 N/A 1,2,3 Capacity 7 Foot Diameter 6.07 N/A 8 Foot Diameter 8.49 N/A 2-4 0.49 2.12 Suntree 3-6 1.35 5.83 Nutrient 3-8 1.93 8.34 Separating 4-8 2.77 11.97 Baffle Box 5-10 4.84 20.91 Hydro- 6-12 7.64 33.00 Variant 6-13.75 9.1 39.31 Technology 7-14 11.2 48.38 (NSBB-HVT) 7-15 12.2 52.70 Pg. 4 7/12/18 Version 12.2 City of Indianapolis Stormwater Quality Unit (SQU) Selection Guide Max Max 10-yr Treatment On-Line Manufactured SQU System Model Flow Flow Rate SQU (cfs) (cfs) 8-14 13.3 57.46 8-16 15.7 67.82 9-18 21.0 90.72 10-17 22.4 96.77 10-20 27.4 118.37 12-21 36.6 158.11 12-24 43.2 186.62 1 Temporary Approval 2 Off-line use only 3 Not Approved for use with an open grate top (i.e. an inlet) Volume Based SQUs* Table 2 Max Manufactured Treatment SQU System Model SQU Flow (cfs) 2 Stormvault®N/A N/A* *Storage volume to be calculated per Chapter 700, Section 701.04 Pg. 5 7/12/18 Version 12.2