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HomeMy WebLinkAboutWPO202000043 Calculations 2021-05-14 LINE I GRADE CIVIL ENGINEERING STORMWATER ENGINEERING ANALYSIS AND CALCULATIONS AIRPORT ROAD SHEETZ O�`y�pLTH oPA DANI •CL O v HY ic• 4559 P Prepared for: i _ 1 <-1u{• � Airport Auto Investments, LLC L. 'S��NAL ENG` 600 East Water Street, Suite H Charlottesville,VA 22902 Contact: Andrew Baldwin (434)422-5050 andrew@corecville.com Prepared By: Line and Grade Civil Engineering 113 4th Street NE;Suite 100 APPROVED Charlottesville VA 22902 by the Albemarle County Community Development Department Contact: Date S�'�r j / ,( Daniel Hyer, PE File_ W pv 20 2 O nODN� (434) 262-0169 dhyer@line-grade.com Submitted to: Albemarle County Department of Community Development 401 McIntire Road Charlottesville,VA 22902 1-YEAR DESIGN STORM HYDROGRAPHS AND ROUTING CALCULATIONS 3-21 MODEL SCHEMATIC 3 1-YEAR SUMMARY REPORT 4 1-YEAR INDIVIDUAL HYDROGRAPHS AND POND REPORTS 5-20 RAINFALL PRECIPITATION(ALL DESIGN STORMS) 21 2-YEAR DESIGN STORM HYDROGRAPHS AND ROUTING CALCULATIONS 22-39 2-YEAR SUMMARY REPORT 23 2-YEAR INDIVIDUAL HYDROGRAPHS AND POND REPORTS 24-39 10-YEAR DESIGN STORM HYDROGRAPHS AND ROUTING CALCULATIONS 40-57 10-YEAR SUMMARY REPORT 41 10-YEAR INDIVIDUAL HYDROGRAPHS AND POND REPORTS 42-57 APPENDIX A: USDA SOILS REPORT 58-80 1-YEAR DESIGN STORM HYDROGRAPHS AND ROUTING CALCULATIONS MODEL SCHEMATIC 1-YEAR SUMMARY REPORT 1-YEAR INDIVIDUAL HYDROGRAPHS AND POND REPORTS RAINFALL PRECIPITATION(ALL DESIGN STORMS) 3 Watershed Model Sc h e i n at I CHydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc v2019 2 2-TO BMP,8-TO X-3(UNCGINTAJCIMEDB 1 - A-1 (PRE) ED ED SWM C 6-TO POA-1 (UNCONTROLLED) CJ 411 BM 8-TOTAL 111L10113 Milir10-TOTAL TO SWM C •1 -SWMC 4011 illin 12-POA-1 Project. Pre-Post Analysis gpw Friday, 11 / 20/ 2020 4 Hydrograph Summary Report Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph No. type flow interval Peak volume hyd(s) elevation strge used Description (origin) (cfs) (min) (min) (cult) (ft) (cuft) 1 SCS Runoff 5 951 1 718 11,952 ----- POA-1 (PRE) 2 SCS Runoff 0 772 1 718 1,584 ---- — TO BMP A 3 SCS Runoff 0 426 1 718 873 ----- TO X-3(UNCONTROLLED) 4 SCS Runoff 2 289 1 717 4,776 ---- TO BMP B 5 SCS Runoff 2 968 1 717 6,193 -- — TO SWM C 6 SCS Runoff 1 574 1 717 3,283 --- TO POA-1 (UNCONTROLLED) 7 Reservoir 0 555 1 722 1,225 2 544 81 442 BMP A 8 Combine 0 872 1 721 2,098 3,7 ----- -- TOTAL FROM DA A 9 Reservoir 2 237 1 718 4,186 4 538 65 801 BMP B 10 Combine 5 195 1 718 10,379 5,9 TOTAL TO SWM C 11 Reservoir 1 489 1 726 10,376 10 532 93 3,157 SWM C 12 Combine 3 443 1 721 15,757 6,8, 11 ---- -- POA-1 Pre-Post Analysis.gpw Return Period 1 Year Friday, 11 /20/2020 5 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 1 POA-1 (PRE) Hydrograph type = SCS Runoff Peak discharge = 5.951 cfs Storm frequency = 1 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 11,952 cuft Drainage area = 2.670 ac Curve number = 79 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 3.01 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 POA-1 (PRE) Q (cfs) Hyd No 1 -- 1 Year Q (cfs) 6 00 6 00 5 00 5.00 4 00 4 00 3.00 3.00 2 00 2 00 1.00 - 1 00 0.00 - 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No 1 6 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 2 TO BMP A Hydrograph type = SCS Runoff Peak discharge = 0.772 cfs Storm frequency = 1 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 1,584 cuft Drainage area = 0.490 ac Curve number = 73 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 3.01 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO BMP A Q (cfs) Hyd. No. 2 -- 1 Year Q (cfs) 1 00 1 00 090 090 080 080 0 70 0.70 0.60 - 0 60 050 050 0.40 0.40 0 30 0.30 0 20 0.20 I . 0 10 0 10 0.00 - - 0 00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No 2 7 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 3 TO X-3 (UNCONTROLLED) Hydrograph type = SCS Runoff Peak discharge = 0.426 cfs Storm frequency = 1 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 873 cuft Drainage area = 0.270 ac Curve number = 73 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 3.01 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO X-3 (UNCONTROLLED) Q (cfs) Hyd No 3 -- 1 Year Q (cfs) 0 50 0 50 0 45 0 45 0.40 0.40 0.35 0 35 0 30 0 30 025 025 0 20 0.20 0.15 0.15 0 10 0 10 0 05 0.05 0 00 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Hyd No. 3 Time (hrs) 8 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 4 TO BMP B Hydrograph type = SCS Runoff Peak discharge = 2.289 cfs Storm frequency = 1 yrs Time to peak = 11.95 hrs Time interval = 1 min Hyd. volume = 4,776 cuft Drainage area = 0.640 ac Curve number = 90 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 3.01 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO BMP B Q (cfs) Hyd No 4 -- 1 Year Q (cfs) 3 00 3.00 2.00 2.00 1.00 1 00 0.00 — ...---*/ (-- - 000 00 20 40 60 80 100 12.0 140 160 18.0 20.0 22.0 Hyd No 4 Time (hrs) 9 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 5 TO SWM C Hydrograph type = SCS Runoff Peak discharge = 2.968 cfs Storm frequency = 1 yrs Time to peak = 11.95 hrs Time interval = 1 min Hyd. volume = 6,193 cuft Drainage area = 0.830 ac Curve number = 90 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 3.01 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO SWM C Q (cfs) Q (cfs) Hyd No 5 -- 1 Year 300 300 2 00 2 00 1 00 1.00 000 - 000 0.0 2.0 40 60 80 100 120 140 160 18.0 20.0 22.0 Hyd No 5 Time (hrs) 10 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 6 TO POA-1 (UNCONTROLLED) Hydrograph type = SCS Runoff Peak discharge = 1.574 cfs Storm frequency = 1 yrs Time to peak = 11.95 hrs Time interval = 1 min Hyd. volume = 3,283 cuft Drainage area = 0.440 ac Curve number = 90 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 3.01 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO POA-1 (UNCONTROLLED) Q (cfs) Hyd No 6 -- 1 Year Q (cfs) 2.00 2 00 1.00 1 00 0.00 — 0 00 00 20 40 6.0 80 100 120 140 160 18.0 200 220 Time (hrs) Hyd No. 6 11 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 7 BMP A Hydrograph type = Reservoir Peak discharge = 0.555 cfs Storm frequency = 1 yrs Time to peak = 12.03 hrs Time interval = 1 min Hyd. volume = 1,225 cuft Inflow hyd. No. = 2 - TO BMP A Max. Elevation = 544.81 ft Reservoir name = BMP A Max. Storage = 442 cuft Storage Indication method used BMP A Q (cfs) Hyd No 7-- 1 Year Q (cfs) 1 00 1 00 0.90 - 0 90 0 80 -- - 0.80 0 70 0.70 0 60 0 60 0 50 0 50 0 40 0 40 0 30 0.30 0.20 0 20 0.10 0 10 0 00 - — - 0 00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No. 7 Hyd No 2 II 1 1 1 1 I >I Total storage used = 442 cuft Pond Report 12 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Pond No. 1 - BMP A Pond Data Contours-User-defined contour areas Average end area method used for volume calculation Begining Elevation=544 25 ft Stage/Storage Table Stage(ft) Elevation(ft) Contour area(sqft) Incr.Storage(cuft) Total storage(cuft) 0 00 544 25 672 0 0 0 75 545 00 922 598 598 1 75 546 00 1,347 1,135 1,732 Culvert/Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise(in) = 15 00 0 00 0 00 0 00 Crest Len(ft) = 11 30 0 00 0 00 0 00 Span(in) = 15 00 0 00 0 00 0 00 Crest El.(ft) = 544 75 0.00 0 00 0 00 No.Barrels = 1 0 0 0 Weir Coeff. = 3 33 3 33 3 33 3 33 Invert El.(ft) = 539 82 0 00 0 00 0 00 Weir Type = 1 --- --- --- Length(ft) = 61 00 0 00 0 00 0 00 Multi-Stage = Yes No No No Slope(%) = 0 60 0 00 0 00 n/a N-Value = 010 013 013 n/a Orifice Coeff. = 0 60 0.60 0.60 0 60 Exfil.(in/hr) = 0 000(by Wet area) Multi-Stage = n/a No No No TW Elev.(ft) = 0 00 Note Culvert/Onfice outflows are analyzed under inlet 0c)and outlet(oc)control Weir risers checked for orifice conditions(ic)and submergence(s) Stage/Storage/ Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0 00 0 544 25 0.00 --- --- --- 0 00 --- --- --- --- --- 0 000 0 08 60 544 33 11 52 lc --- --- --- 0 00 --- --- --- --- 0 000 0 15 120 544 40 11 52 lc --- --- --- 0 00 --- --- --- --- --- 0 000 0 22 179 544 47 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 30 239 544 55 11.52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 38 299 544 63 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 45 359 544 70 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 52 418 544 78 11 52 is --- --- --- 0 15 --- --- --- --- --- 0 150 0 60 478 544 85 11 52 lc --- --- --- 1 19 --- --- --- --- --- 1 192 0 68 538 544 93 11 52 lc --- --- --- 2 76 --- --- --- --- --- 2 757 0 75 598 545.00 11 52 is --- --- --- 4 70 --- --- --- --- --- 4 704 0 85 711 545 10 11 52 lc --- --- --- 7 79 --- --- --- --- --- 7 791 0 95 825 545 20 11 52 is --- --- --- 11 36 --- --- --- --- --- 11 36 1 05 938 545 30 12 67 ic --- --- --- 12 67 s --- --- --- --- --- 12 67 1 15 1,052 545 40 12 94 lc --- --- --- 12 94 s --- --- --- --- --- 12 94 1 25 1,165 545 50 13.15 is --- --- --- 13 14 s --- --- --- --- --- 13 14 1 35 1,278 545 60 13 32 lc --- --- --- 13 31 s --- --- --- --- --- 13 31 1 45 1,392 545 70 13 47 ic --- --- --- 13 46 s --- --- --- --- --- 13 46 1 55 1,505 545 80 13 62 is --- --- --- 13 61 s --- --- --- --- --- 13 61 1 65 1,619 545 90 13 76 ic --- --- --- 13 75 s --- --- --- --- --- 13 75 1 75 1,732 546 00 13 89 lc --- --- --- 13 88 s --- --- --- --- --- 13 88 13 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 8 TOTAL FROM DA. A Hydrograph type = Combine Peak discharge = 0.872 cfs Storm frequency = 1 yrs Time to peak = 12.02 hrs Time interval = 1 min Hyd. volume = 2,098 cuft Inflow hyds. = 3, 7 Contrib. drain. area = 0.270 ac TOTAL FROM DA. A Q (cfs) Hyd. No. 8-- 1 Year Q (cfs) 1 00 1 00 0.90 0 90 080 080 070 070 0.60 060 0.50 0 50 0.40 0 40 0 30 0 30 0 20 0 20 0.10 0 10 0.00 - J 0 00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No. 8 Hyd No 3 Hyd No. 7 14 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 9 BMP B Hydrograph type = Reservoir Peak discharge = 2.237 cfs Storm frequency = 1 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 4,186 cuft Inflow hyd. No. = 4 - TO BMP B Max. Elevation = 538.65 ft Reservoir name = BMP B Max. Storage = 801 cuft Storage Indication method used BMP B Q (cfs) Hyd No 9-- 1 Year Q (cfs) 300 300 2.00 2 00 1.00 1.00 0 00 0 00 00 20 4.0 6.0 8.0 100 120 140 160 180 200 220 Time (hrs) Hyd No. 9 Hyd No 4 II 1 1 1 1 1 1 Total storage used = 801 cuft Pond Report 15 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Pond No. 2 - BMP B Pond Data Contours-User-defined contour areas Average end area method used for volume calculation Begining Elevation=538 00 ft Stage/Storage Table Stage(ft) Elevation(ft) Contour area(sqft) Incr.Storage(cuft) Total storage(cuft) 0 00 538 00 1,077 0 0 0 50 538 50 1,282 590 590 1 00 539 00 1,501 696 1,286 1 50 539 50 1,734 809 2,094 Culvert/Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise(in) = 15 00 0 00 0 00 0 00 Crest Len(ft) = 11 30 0 00 0 00 0 00 Span(in) = 15 00 0 00 0 00 0 00 Crest El.(ft) = 538 50 0 00 0 00 0 00 No.Barrels = 1 0 0 0 Weir Coeff. = 3 33 3 33 3 33 3 33 Invert El.(ft) = 533 57 0.00 0 00 0 00 Weir Type = 1 --- --- --- Length(ft) = 15 00 0 00 0 00 0 00 Multi-Stage = Yes No No No Slope(%) = 0 60 0 00 0 00 n/a N-Value = 010 013 013 n/a Orifice Coeff. = 0 60 0 60 0 60 0 60 Exfil.(in/hr) = 0 000(by Wet area) Multi-Stage = n/a No No No TW Elev.(ft) = 0 00 Note Culvert/Onfice outflows are analyzed under inlet(lc)and outlet(oc)control Weir risers checked for orifice conditions(ic)and submergence(s) Stage/Storage I Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0 00 0 538 00 0 00 --- --- --- 0 00 --- --- --- --- --- 0 000 0 05 59 538 05 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 10 118 538 10 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 15 177 538 15 11 52 lc --- --- --- 0 00 --- --- --- --- --- 0 000 0 20 236 538 20 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 25 295 538 25 11 52 lc --- --- --- 0 00 --- --- --- --- --- 0 000 0 30 354 538 30 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 35 413 538 35 11 52 lc --- --- --- 0 00 --- --- --- --- --- 0 000 0 40 472 538 40 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 45 531 538 45 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 50 590 538 50 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 55 659 538 55 11 52 ic --- --- --- 0 42 --- --- --- --- --- 0 421 0 60 729 538 60 11 52 ic --- --- --- 1 19 --- --- --- --- --- 1 189 0 65 798 538 65 11 52 ic --- --- --- 2 19 --- --- --- --- --- 2 187 0 70 868 538 70 11 52 is --- --- --- 3 37 --- --- --- --- --- 3 366 0 75 938 538 75 11 52 is --- --- --- 4 70 --- --- --- --- --- 4 700 0 80 1,007 538 80 11 52 is --- --- --- 6 18 --- --- --- --- --- 6 181 0 85 1,077 538 85 11 52 is --- --- --- 7 79 --- --- --- --- --- 7 789 0 90 1,146 538 90 11 52 is --- --- --- 9 52 --- --- --- --- --- 9 516 0 95 1,216 538 95 11 52 lc --- --- --- 11 35 --- --- --- --- --- 11 35 1 00 1,286 539 00 12 46 lc --- --- --- 12 46 s --- --- --- --- --- 12 46 1 05 1,366 539 05 12 67 ic --- --- --- 12 67 s --- --- --- --- --- 12 67 1 10 1,447 539 10 12 82 ic --- --- --- 12 82 s --- --- --- --- --- 12 82 1 15 1,528 539 15 12 94 ic --- --- --- 12 94 s --- --- --- --- --- 12 94 1 20 1,609 539 20 13.05 ic --- --- --- 13 05 s --- --- --- --- --- 13 05 1 25 1,690 539 25 13 15 tc --- --- --- 13 14 s --- --- --- --- --- 13 14 1 30 1,771 539 30 13 24 ic --- --- --- 13 23 s --- --- --- --- --- 13 23 1 35 1,852 539 35 13 32 ic --- --- --- 13 31 s --- --- --- --- --- 13 31 1 40 1,933 539 40 13 40 ic --- --- --- 13 39 s --- --- --- --- --- 13 39 1 45 2,013 539 45 13 47 ic --- --- --- 13 47 s --- --- --- --- --- 13 47 1 50 2,094 539 50 13 55 ic --- --- --- 13 54 s --- --- --- --- --- 13 54 16 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 10 TOTAL TO SWM C Hydrograph type = Combine Peak discharge = 5.195 cfs Storm frequency = 1 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 10,379 cuft Inflow hyds. = 5, 9 Contrib. drain. area = 0.830 ac TOTAL TO SWM C Q (cfs) Hyd No 10 -- 1 Year Q (cfs) 6 00 6 00 500 - 500 4 00 4 00 3 00 3 00 2.00 2 00 1 00 1 00 000 - `- 000 00 20 40 60 80 100 120 140 160 18.0 20.0 220 Time (hrs) Hyd No 10 Hyd No 5 Hyd No. 9 17 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 I 20/2020 Hyd. No. 11 SWM C Hydrograph type = Reservoir Peak discharge = 1.489 cfs Storm frequency = 1 yrs Time to peak = 12.10 hrs Time interval = 1 min Hyd. volume = 10,376 cuft Inflow hyd. No. = 10 - TOTAL TO SWM C Max. Elevation = 532.93 ft Reservoir name = SWM C Max. Storage = 3,157 cuft Storage Indication method used SWM C Q (cfs) Hyd No 11 -- 1 Year Q (cfs) 6 00 6 00 5 00 5.00 4 00 4 00 3 00 3 00 2 00 2.00 1 00 1 00 000 - - — _ 000 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No 11 Hyd No 10 li 1.1.1 LLB Total storage used = 3,157 cuft Pond Report 18 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Pond No. 3 - SWM C Pond Data UG Chambers-Invert elev =531 00 ft, Rise x Span=5 00 x 18 00 ft, Barrel Len=71 25 ft, No Barrels= 1, Slope=0 00%, Headers=No Encasement-Invert elev =530 00 ft, Width=20 00 ft, Height=7 00 ft, Voids=40 00% Stage/Storage Table Stage(ft) Elevation(ft) Contour area(sqft) Incr.Storage(cuft) Total storage(cuft) 0 00 530 00 n/a 0 0 0 70 530 70 n/a 399 399 1 40 531 40 n/a 707 1,106 2 10 532 10 n/a 938 2,044 2 80 532 80 n/a 938 2,982 3 50 533 50 n/a 938 3,920 4 20 534 20 n/a 938 4,857 4 90 534 90 n/a 938 5,795 5 60 535 60 n/a 938 6,733 6 30 536 30 n/a 707 7,440 7 00 537 00 n/a 399 7,839 Culvert I Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise(in) = 18 00 6 00 0 00 0 00 Crest Len(ft) = 4 00 0 00 0 00 0 00 Span(in) = 18 00 6 00 0 00 0 00 Crest El.(ft) = 534 25 0.00 0 00 0 00 No. Barrels = 1 1 0 0 Weir Coeff. = 3 33 3 33 3 33 3 33 Invert El.(ft) = 529 90 530 00 0 00 0 00 Weir Type = Rect --- --- --- Length(ft) = 45 27 0 00 0 00 0 00 Multi-Stage = Yes No No No Slope(%) = 1 26 0 00 0 00 n/a N-Value = 013 013 013 n/a Orifice Coeff. = 0 60 0 60 0 60 0 60 Exfil.(in/hr) = 0 000(by Contour) Multi-Stage = n/a Yes No No TW Elev.(ft) = 0 00 Note Culvert/Orifice outflows are analyzed under inlet(ic)and outlet(oc)control Weir risers checked for orifice conditions(ic)and submergence(s) Stage/Storage/Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0 00 0 530 00 0 00 0 00 --- --- 0 00 --- --- --- --- --- 0 000 0 07 40 530 07 0 06 lc 0 02 ic --- --- 0 00 --- --- --- --- --- 0 015 0 14 80 530 14 0 06 lc 0 06 lc --- --- 0 00 --- --- --- --- --- 0 057 0 21 120 530 21 0 13 ic 0 12 ic --- --- 0 00 --- --- --- --- --- 0 123 0 28 160 530 28 0 22 ic 0 21 ic --- --- 0 00 --- --- --- --- --- 0 205 0 35 200 530 35 0 31 ic 0 30 ic --- --- 0 00 --- --- --- --- --- 0 298 0 42 239 530 42 0 41 ic 0 39 ic --- --- 0 00 --- --- --- --- --- 0 389 0 49 279 530 49 0 47 ic 0 47 lc --- --- 0 00 --- --- --- --- --- 0 466 0 56 319 530 56 0 53 is 0 53 is --- --- 0 00 --- --- --- --- --- 0.526 0 63 359 530 63 0 58 is 0 58 ic --- --- 0 00 --- --- --- --- --- 0 583 0 70 399 530 70 0.65 ic 0 63 ic --- --- 0 00 --- --- --- --- --- 0 634 0 77 470 530 77 0 69 lc 0 68 lc --- --- 0 00 --- --- --- --- --- 0 676 0 84 540 530 84 0 72 lc 0 71 lc --- --- 0 00 --- --- --- --- --- 0 715 0 91 611 530 91 0.76 ic 0 75 ic --- --- 0 00 --- --- --- --- --- 0 751 0 98 682 530 98 0 80 is 0 79 lc --- --- 0 00 --- --- --- --- --- 0 786 1 05 753 531 05 0 84 lc 0 82 lc --- --- 0 00 --- --- --- --- --- 0 819 1 12 823 531 12 0.85 is 0 85 is --- --- 0 00 --- --- --- --- --- 0 851 1 19 894 531 19 0 89 lc 0 89 is --- --- 0 00 --- --- --- --- --- 0 886 1 26 965 531 26 0 93 lc 0 92 lc --- --- 0 00 --- --- --- --- --- 0 916 1 33 1,035 531 33 0 97 is 0 94 is --- --- 0 00 --- --- --- --- --- 0 945 1 40 1,106 531 40 0 98 lc 0 98 lc --- --- 0 00 --- --- --- --- --- 0 975 1 47 1,200 531 47 1 02 lc 1 00 lc --- --- 0 00 --- --- --- --- --- 1 004 1 54 1,294 531 54 1 06 is 1 03 lc --- --- 0 00 --- --- --- --- --- 1 030 1 61 1,387 531 61 1 06 is 1 06 is --- --- 0 00 --- --- --- --- --- 1 060 1 68 1,481 531 68 1 11 is 1 08 lc --- --- 0 00 --- --- --- --- --- 1 085 1 75 1,575 531 75 1 11 is 1 11 lc --- --- 000 --- --- --- --- --- 1 112 1 82 1,669 531 82 1 16 lc 1 14 lc --- --- 0 00 --- --- --- --- --- 1 137 1 89 1,763 531 89 1 16 is 1 16 is --- --- 0 00 --- --- --- --- --- 1 163 1 96 1,856 531 96 1 21 lc 1 19 lc --- --- 0 00 --- --- --- --- --- 1 186 2 03 1,950 532 03 1 21 ic 1 21 lc --- --- 0 00 --- --- --- --- --- 1 212 2 10 2,044 532 10 1 26 lc 1 23 lc --- --- 0 00 --- --- --- --- --- 1 234 2 17 2,138 532 17 1 26 is 1 26 lc --- --- 0 00 --- --- --- --- --- 1 259 Continues on next page 19 SWM C Stage/Storage/ Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 2 24 2,231 532 24 1 31 is 1 28 is --- --- 0 00 --- --- --- --- --- 1 280 2 31 2,325 532 31 1 31 is 1 30 is --- --- 0 00 --- --- --- --- 1.304 2 38 2,419 532.38 1 32 is 1 32 is --- --- 0 00 --- --- --- --- 1 325 2 45 2,513 532.45 1 37 ic 1 35 is --- --- 0 00 --- --- --- --- --- 1 347 2 52 2,607 532 52 1 37 is 1 37 is --- --- 0 00 --- --- --- --- --- 1 370 2 59 2,700 532 59 1 42 is 1 39 is --- --- 0 00 --- --- --- --- --- 1 389 2 66 2,794 532 66 1 42 is 1 41 is --- --- 0 00 --- --- --- --- --- 1 412 2 73 2,888 532 73 1 43 is 1 43 is --- --- 0 00 --- --- --- --- --- 1 431 2 80 2,982 532 80 1 48 is 1 45 is --- --- 0 00 --- --- --- --- --- 1 452 2 87 3,075 532 87 1 48 is 1 47 is --- --- 0 00 --- --- --- --- --- 1 473 2 94 3,169 532 94 1 49 is 1 49 is --- --- 0 00 --- --- --- --- --- 1 491 3 01 3,263 533 01 1 53 is 1 51 is --- --- 0 00 --- --- --- --- --- 1 512 3 08 3,357 533 08 1 53 is 1 53 ic --- --- 0 00 --- --- --- --- --- 1 532 3 15 3,451 533 15 1 55 is 1 55 is --- --- 0 00 --- --- --- --- --- 1 550 3 22 3,544 533 22 1 59 is 1 57 is --- --- 0 00 --- --- --- --- --- 1 569 3 29 3,638 533 29 1 59 ic 1 59 is --- --- 0 00 --- --- --- --- --- 1 589 3 36 3,732 533 36 1 61 Ic 1 61 is --- --- 0 00 --- --- --- --- --- 1 606 3 43 3,826 533 43 1 65 ic 1 63 lc --- --- 0 00 --- --- --- --- --- 1 625 3 50 3,920 533 50 1 65 lc 1 64 is --- --- 0 00 --- --- --- --- --- 1 644 3 57 4,013 533 57 1 66 lc 1 66 is --- --- 0 00 --- --- --- --- --- 1 661 3 64 4,107 533 64 1 71 Ic 1 68 is --- --- 0 00 --- --- --- --- --- 1 679 3 71 4,201 533 71 1 71 lc 1 70 is --- --- 0 00 --- --- --- --- --- 1 697 3 78 4,295 533 78 1 72 is 1 72 lc --- --- 0 00 --- --- --- --- --- 1 715 3 85 4,388 533.85 1 77 is 1 73 is --- --- 0 00 --- --- --- --- --- 1 731 3 92 4,482 533 92 1 77 is 1 75 is --- --- 0 00 --- --- --- --- --- 1 749 3 99 4,576 533 99 1 77 is 1 77 Ic --- --- 0 00 --- --- --- --- --- 1 767 4 06 4,670 534 06 1 78 lc 1 78 is --- --- 0 00 --- --- --- --- --- 1 783 4 13 4,764 534 13 1 84 is 1 80 is --- --- 0 00 --- --- --- --- --- 1 799 4 20 4,857 534 20 1 84 lC 1 82 ic --- --- 0 00 --- --- --- --- --- 1 816 4 27 4,951 534 27 1 90 lc 1 83 lc --- --- 0 04 --- --- --- --- --- 1 868 4 34 5,045 534 34 2 23 is 1 83 ic --- --- 0 36 --- --- --- --- --- 2 193 4 41 5,139 534 41 2 73 Ic 1 83 is --- --- 0 85 --- --- --- --- --- 2 682 4 48 5,233 534 48 3 33 ic 1 82 Ic --- --- 1 47 --- --- --- --- --- 3 293 4 55 5,326 534 55 4 03 is 1 82 is --- --- 2 19 --- --- --- --- --- 4 005 4 62 5,420 534 62 4 80 is 1 81 is --- --- 3 00 --- --- --- --- --- 4 804 4 69 5,514 534 69 5 70 lc 1 79 is --- --- 3 89 --- --- --- --- --- 5.680 4 76 5,608 534 76 6 62 ic 1 77 ic --- --- 4 85 --- --- --- --- --- 6 624 4 83 5,701 534 83 7 61 oc 1 73 is --- --- 5 88 --- --- --- --- --- 7 611 4 90 5,795 534 90 8 67 oc 1 69 is --- --- 6 98 --- --- --- --- --- 8 673 4 97 5,889 534 97 9 77 ic 1 64 ic --- --- 8 14 --- --- --- --- --- 9 775 5 04 5,983 535 04 10 92 is 1 57 is --- --- 9 35 --- --- --- --- --- 10 92 5 11 6,077 535 11 12 10 is 1 48 lc --- --- 10 62 --- --- --- --- --- 12 10 5 18 6,170 535 18 13 31 lc 1 36 lc --- --- 11 95 --- --- --- --- --- 13 31 5 25 6,264 535 25 14 55 is 1 22 is --- --- 13 32 --- --- --- --- --- 14 55 5 32 6,358 535 32 15 79 is 1 05 is --- --- 14 75 --- --- --- --- --- 15 79 5 39 6,452 535 39 16 61 is 0 91 is --- --- 15 70 s --- --- --- --- --- 16 61 5 46 6,545 535 46 17 06 is 0 84 is --- --- 16 22 s --- --- --- --- --- 17 06 5 53 6,639 535 53 17 43 lc 0 78 ic --- --- 16 65 s --- --- --- --- --- 17 43 5 60 6,733 535 60 17 74 lc 0 73 lc --- --- 17 01 s --- --- --- --- --- 17 74 5 67 6,804 535 67 18 02 is 0 69 is --- --- 17 33 s --- --- --- --- --- 18 02 5 74 6,874 535 74 18 28 lc 0 65 is --- --- 17 63 s --- --- --- --- --- 18 28 5 81 6,945 535 81 18 51 iC 0 62 lc --- --- 17 89 s --- --- --- --- --- 18 51 5 88 7,016 535 88 18 73 lc 0 59 lc --- --- 18 14 s --- --- --- --- --- 18 73 5 95 7,087 535 95 18 93 lc 0 56 is --- --- 18 37 s --- --- --- --- --- 18 93 6 02 7,157 536 02 19.12 lc 0 53 is --- --- 18 59 s --- --- --- --- --- 19 12 6 09 7,228 536 09 19 31 lc 0 51 ic --- --- 18 80 s --- --- --- --- --- 19 30 6 16 7,299 536 16 19 48 ic 0 49 is --- --- 18 99 s --- --- --- --- --- 19 48 6 23 7,369 536 23 19 65 lc 0 47 lc --- --- 19 18 s --- --- --- --- --- 19 65 6 30 7,440 536 30 19 81 lc 0 45 ic --- --- 19 36 s --- --- --- --- --- 19 81 6 37 7,480 536 37 19 97 lc 0 43 is --- --- 19 54 s --- --- --- --- --- 19 97 6 44 7,520 536 44 20 12 lc 0 42 is --- --- 19 70 s --- --- --- --- --- 20 12 6 51 7,560 536 51 20 27 is 0 40 is --- --- 19 87 s --- --- --- --- --- 20 27 6 58 7,600 536 58 20 42 is 0 39 is --- --- 20 03 s --- --- --- --- --- 20 42 6 65 7,640 536 65 20 56 ic 0 38 lc --- --- 20 18 s --- --- --- --- --- 20 56 6 72 7,679 536 72 20 70 lc 0 36 is --- --- 20 34 s --- --- --- --- --- 20 70 6 79 7,719 536 79 20 84 Ic 0 35 is --- --- 20 49 s --- --- --- --- --- 20 84 6 86 7,759 536 86 20 98 Ic 0 34 is --- --- 20 63 s --- --- --- --- --- 20 98 6 93 7,799 536 93 21 11 lC 0 33 lc --- --- 20 78 s --- --- --- --- --- 21 11 7 00 7,839 537 00 21 24 is 0 32 is --- --- 20 92 s --- --- --- --- --- 21 24 End 20 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 12 POA-1 Hydrograph type = Combine Peak discharge = 3.443 cfs Storm frequency = 1 yrs Time to peak = 12.02 hrs Time interval = 1 min Hyd. volume = 15,757 cuft Inflow hyds. = 6, 8, 11 Contrib. drain. area = 0.440 ac POA-1 Q (cfs) Q (cfs) Hyd. No. 12 -- 1 Year 4 00 4 00 3 00 3.00 2 00 2 00 1 00 1 00 0 00 — 0 00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No. 12 Hyd No 6 Hyd No 8 Hyd No 11 21 Hydraflow Rainfall Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Return Intensity-Duration-Frequency Equation Coefficients(FHA) Period (Yrs) B D E (N/A) 1 0 0000 0 0000 0 0000 ------ 2 49 0200 10 5000 0 8200 3 0 0000 0 0000 0 0000 ------- 5 55 7100 11 5000 0 8000 ------ 10 46 9500 9 5000 0 7300 ----- 25 40 1100 7 7500 0 6600 ------ 50 35 6800 6 5000 0 6100 ---- 100 31 0900 5 0000 0 5500 File name Albemarle and Charlottesville IDF Intensity= B/(Tc + D)AE Return Intensity Values(in/hr) Period (Yrs) 5 min 10 15 20 25 30 35 40 45 50 55 60 1 000 000 000 000 000 000 000 000 000 000 000 000 2 5 18 4 12 3 44 2 97 2 63 2 36 2 14 1 97 1 82 1 70 1 59 1 50 3 000 000 000 000 000 000 000 000 000 000 000 000 5 591 479 405 353 313 283 258 238 221 206 194 183 10 667 537 455 397 354 321 294 272 254 238 224 212 25 748 601 510 447 401 365 336 313 293 276 261 248 50 8 04 6 45 5 49 4 83 4 35 3 98 3 68 3 43 3 22 3 05 2 89 2 76 100 876 701 598 1 529 479 440 409 383 362 343 327 313 Tc=time in minutes Values may exceed 60 ropbox(Line+Gradel\04 Resources\Stormwater\HYDRAflow\Precj Data\Albemarle North(Free Union, NOAA)pcp Rainfall Precipitation Table (in) Storm Distribution ! 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr SCS 24-hour 3 01 3 65 0 00 4 65 5 50 6 75 7 82 1 9 00 SCS 6-Hr 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 Huff-1st 000 000 000 000 000 000 000 000 Huff-2nd 000 000 000 000 000 000 000 000 Huff-3rd 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 Huff-4th 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 Huff-Indy 000 000 000 000 000 000 000 000 Custom 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0.00 2-YEAR DESIGN STORM HYDROGRAPHS AND ROUTING CALCULATIONS 2-YEAR SUMMARY REPORT 2-YEAR INDIVIDUAL HYDROGRAPHS AND POND REPORTS 23 Hydrograph Summary Report ydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph No. type flow interval Peak volume hyd(s) elevation strge used Description (origin) (cfs) (min) (mm) (cuft) (ft) (cuft) 1 SCS Runoff 8 363 1 718 16,825 ---- --- POA-1 (PRE) 2 SCS Runoff 1 166 1 718 2,351 ---- TO BMP A 3 SCS Runoff 0 643 1 718 1,295 TO X-3(UNCONTROLLED) 4 SCS Runoff 2 932 1 717 6,202 TO BMP B 5 SCS Runoff 3 803 1 717 8,043 TO SWM C 6 SCS Runoff 2 016 1 717 4,264 ----- TO POA-1 (UNCONTROLLED) 7 Reservoir 1 130 1 719 1,992 2 544 85 475 BMP A 8 Combine 1 748 1 719 3,287 3,7 ----- --- TOTAL FROM DA A 9 Reservoir 2 882 1 718 5,612 4 538 68 840 BMP B 10 Combine 6 662 1 718 13,655 5,9 TOTAL TO SWM C 11 Reservoir 1 726 1 726 13,653 10 533 83 4,360 SWM C 12 Combine 5 218 1 718 21,203 6,8, 11 POA-1 Pre-Post Analysis.gpw Return Period 2 Year Friday, 11 /20/2020 24 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 1 POA-1 (PRE) Hydrograph type = SCS Runoff Peak discharge = 8.363 cfs Storm frequency = 2 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 16,825 cuft Drainage area = 2.670 ac Curve number = 79 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 3.65 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 POA-1 (PRE) Q (cfs) Hyd No 1 --2 Year Q (cfs) 10 00 10.00 8.00 8 00 600 600 4.00 4.00 2 00 - 2 00 J*. . 0.00 — 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Hyd No 1 Time (hrs) 25 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 2 TO BMP A Hydrograph type = SCS Runoff Peak discharge = 1.166 cfs Storm frequency = 2 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 2,351 cuft Drainage area = 0.490 ac Curve number = 73 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 3.65 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO BMP A Q (cfs) Hyd No 2 --2 Year Q (cfs) 2 00 2 00 1 00 1 00 000 -- 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Hyd No 2 Time (hrs) 26 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 3 TO X-3 (UNCONTROLLED) Hydrograph type = SCS Runoff Peak discharge = 0.643 cfs Storm frequency = 2 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 1,295 cuft Drainage area = 0.270 ac Curve number = 73 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 3.65 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO X-3 (UNCONTROLLED) Q (cfs) Hyd. No. 3--2 Year Q (cfs) 1 00 1 00 0 90 0.90 0 80 0 80 0.70 0 70 0 60 0 60 050 050 0 40 0 40 0 30 0 30 0.20 0 20 0 10 0 10 0 00 - 0 00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Hyd No. 3 Time (hrs) 27 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 4 TO BMP B Hydrograph type = SCS Runoff Peak discharge = 2.932 cfs Storm frequency = 2 yrs Time to peak = 11.95 hrs Time interval = 1 min Hyd. volume = 6,202 cuft Drainage area = 0.640 ac Curve number = 90 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 3.65 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO BMP B Q (cfs) Hyd No 4 --2 Year Q (cfs) 3 00 3 00 2 00 2 00 1 00 1 00 000 - 000 0.0 20 40 60 80 100 120 140 160 180 200 220 Hyd No 4 Time (hrs) 28 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 5 TO SWM C Hydrograph type = SCS Runoff Peak discharge = 3.803 cfs Storm frequency = 2 yrs Time to peak = 11.95 hrs Time interval = 1 min Hyd. volume = 8,043 cuft Drainage area = 0 830 ac Curve number = 90 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 3.65 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO SWM C Q (cfs) Hyd No 5 --2 Year 0 (cfs) 4.00 4 00 3.00 3.00 2 00 2 00 1 00 1 00 0.00 0 00 0.0 2.0 4.0 60 80 100 120 140 160 18.0 20.0 22.0 Hyd No. 5 Time (hrs) 29 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 6 TO POA-1 (UNCONTROLLED) Hydrograph type = SCS Runoff Peak discharge = 2.016 cfs Storm frequency = 2 yrs Time to peak = 11.95 hrs Time interval = 1 min Hyd. volume = 4,264 cuft Drainage area = 0.440 ac Curve number = 90 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 3.65 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO POA-1 (UNCONTROLLED) Q (cfs) Hyd. No. 6--2 Year Q (cfs) 300 300 2 00 2 00 1.00 1 00 0.00 - 0.00 00 20 40 6.0 8.0 100 120 140 160 18.0 200 220 Hyd No 6 Time (hrs) 30 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 7 BMP A Hydrograph type = Reservoir Peak discharge = 1.130 cfs Storm frequency = 2 yrs Time to peak = 11.98 hrs Time interval = 1 min Hyd. volume = 1,992 cuft Inflow hyd. No. = 2 - TO BMP A Max. Elevation = 544.85 ft Reservoir name = BMP A Max. Storage = 475 cuft Storage Indication method used BMP A Q (cfs) Hyd No 7--2 Year Q (cfs) 2.00 2 00 1 00 1.00 0.00 - 0 00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No 7 Hyd No 2 II 1 I I I I 1 Total storage used =475 cuft Pond Report 31 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Pond No. 1 - BMP A Pond Data Contours-User-defined contour areas Average end area method used for volume calculation Begining Elevation=544 25 ft Stage/Storage Table Stage(ft) Elevation(ft) Contour area(sqft) Incr.Storage(cuft) Total storage(cuft) 0 00 544 25 672 0 0 0 75 545 00 922 598 598 1 75 546 00 1,347 1,135 1,732 Culvert I Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise(in) = 15 00 0 00 0 00 0 00 Crest Len(ft) = 11 30 0 00 0 00 0 00 Span(in) = 15 00 0 00 0 00 0 00 Crest El.(ft) = 544 75 0 00 0 00 0 00 No.Barrels = 1 0 0 0 Weir Coeff. = 3 33 3 33 3 33 3 33 Invert El.(ft) = 539 82 0 00 0 00 0 00 Weir Type = 1 --- --- --- Length(ft) = 61 00 0 00 0 00 0 00 Multi-Stage = Yes No No No Slope(%) = 0 60 0 00 0 00 n/a N-Value = 010 013 013 n/a Orifice Coeff. = 0 60 0 60 0 60 0 60 Exfil.(in/hr) = 0 000(by Wet area) Multi-Stage = n/a No No No TW Elev.(ft) = 0 00 Note Culvert/Orifice outflows are analyzed under inlet(ic)and outlet(oc)control Weir risers checked for orifice conditions(ic)and submergence(s) Stage/Storage/ Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0 00 0 544 25 0 00 --- --- --- 0 00 --- --- --- --- --- 0 000 0 08 60 544 33 11 52 lc --- --- --- 0 00 --- --- --- --- --- 0 000 0 15 120 544 40 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 22 179 544 47 11 52 lc --- --- --- 0 00 --- --- --- --- --- 0 000 0 30 239 544 55 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 38 299 544 63 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 45 359 544 70 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 52 418 544 78 11 52 ic --- --- --- 0 15 --- --- --- --- --- 0 150 0 60 478 544 85 11 52 ic --- --- --- 1 19 --- --- --- --- --- 1 192 0 68 538 544 93 11 52 is --- --- --- 2 76 --- --- --- --- --- 2 757 0 75 598 545 00 11 52 ic --- --- --- 4 70 --- --- --- --- --- 4 704 0 85 711 545 10 11 52 ic --- --- --- 7 79 --- --- --- --- --- 7 791 0 95 825 545 20 11 52 lc --- --- --- 11 36 --- --- --- --- --- 11 36 1 05 938 545 30 12 67 ic --- --- --- 12 67 s --- --- --- --- --- 12 67 1 15 1,052 545 40 12 94 is --- --- --- 12 94 s --- --- --- --- --- 12 94 1 25 1,165 545 50 13 15 is --- --- --- 13 14 s --- --- --- --- --- 13 14 1 35 1,278 545 60 13 32 is --- --- --- 13 31 s --- --- --- --- --- 13 31 1 45 1,392 545 70 13 47 ic --- --- --- 13 46 s --- --- --- --- --- 13 46 1 55 1,505 545 80 13 62 ic --- --- --- 13 61 s --- --- --- --- --- 13 61 1 65 1,619 545 90 13 76 ic --- --- --- 13 75 s --- --- --- --- --- 13 75 1 75 1,732 546 00 13 89 is --- --- --- 13 88 s --- --- --- --- --- 13 88 32 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 8 TOTAL FROM DA. A Hydrograph type = Combine Peak discharge = 1.748 cfs Storm frequency = 2 yrs Time to peak = 11.98 hrs Time interval = 1 min Hyd. volume = 3,287 cuft Inflow hyds = 3, 7 Contrib. drain. area = 0.270 ac TOTAL FROM DA. A Q (cfs) Hyd No 8 --2 Year Q (cfs) 200 - 2.00 1 00 1.00 0 00 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No. 8 Hyd No. 3 Hyd No. 7 33 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 9 BMP B Hydrograph type = Reservoir Peak discharge = 2.882 cfs Storm frequency = 2 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 5,612 cuft Inflow hyd. No. = 4 - TO BMP B Max. Elevation = 538.68 ft Reservoir name = BMP B Max. Storage = 840 cuft Storage Indication method used BMP B Q (cfs) Hyd No 9--2 Year Q (cfs) 3.00 3 00 2 00 2.00 ......... ..... 1.00 1.00 000 0.00 0.0 20 4.0 60 80 100 120 140 160 180 200 220 Time (hrs) Hyd No 9 Hyd No 4 II I I I I I Total storage used = 840 cuft Pond Report 34 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Pond No. 2 - BMP B Pond Data Contours-User-defined contour areas Average end area method used for volume calculation Begining Elevation=538 00 ft Stage/Storage Table Stage(ft) Elevation(ft) Contour area(sqft) Incr.Storage(cuft) Total storage(cuft) 0 00 538 00 1,077 0 0 0 50 538 50 1,282 590 590 1 00 539 00 1,501 696 1,286 1 50 539 50 1,734 809 2,094 Culvert/Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise(in) = 15 00 0 00 0 00 0 00 Crest Len(ft) = 11 30 0 00 0 00 0 00 Span(in) = 15 00 0 00 0 00 0 00 Crest El.(ft) = 538 50 0 00 0 00 0 00 No.Barrels = 1 0 0 0 Weir Coeff. = 3 33 3 33 3 33 3 33 Invert El.(ft) = 533 57 0 00 0 00 0 00 Weir Type = 1 --- --- --- Length(ft) = 15 00 0 00 0 00 0 00 Multi-Stage = Yes No No No Slope(%) = 0 60 0 00 0 00 n/a N-Value = 010 013 013 n/a Orifice Coeff. = 0 60 0 60 0.60 0 60 Exfil.(in/hr) = 0 000(by Wet area) Multi-Stage = n/a No No No TW Elev.(ft) = 0 00 Note Culvert/Onfice outflows are analyzed under inlet(ic)and outlet(oc)control Weir risers checked for orifice conditions(ic)and submergence(s) Stage/Storage/ Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0 00 0 538 00 0 00 --- --- --- 0 00 --- --- --- --- --- 0 000 0 05 59 538 05 11 52 lc --- --- --- 0 00 --- --- --- --- --- 0 000 0 10 118 538 10 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 15 177 538 15 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 20 236 538 20 11 52 lc --- --- --- 0 00 --- --- --- --- --- 0 000 0 25 295 538 25 11 52 lc --- --- --- 0 00 --- --- --- --- --- 0 000 0 30 354 538 30 11 52 lc --- --- --- 0 00 --- --- --- --- --- 0 000 0 35 413 538 35 11 52 lc --- --- --- 0 00 --- --- --- --- --- 0 000 0 40 472 538 40 11 52 lc --- --- --- 0 00 --- --- --- --- --- 0 000 0 45 531 538 45 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0.000 0 50 590 538 50 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 55 659 538 55 11 52 ic --- --- --- 0 42 --- --- --- --- --- 0 421 0 60 729 538 60 11 52 lc --- --- --- 1 19 --- --- --- --- --- 1 189 0 65 798 538 65 11 52 lc --- --- --- 2 19 --- --- --- --- --- 2 187 0 70 868 538 70 11 52 ic --- --- --- 3 37 --- --- --- --- --- 3 366 0 75 938 538 75 11 52 ic --- --- --- 4 70 --- --- --- --- --- 4 700 0 80 1,007 538 80 11 52 is --- --- --- 6 18 --- --- --- --- --- 6 181 0 85 1,077 538 85 11 52 lc --- --- --- 7 79 --- --- --- --- --- 7 789 0 90 1,146 538 90 11 52 lc --- --- --- 9 52 --- --- --- --- --- 9 516 0 95 1,216 538 95 11 52 lc --- --- --- 11 35 --- --- --- --- --- 11 35 1 00 1,286 539 00 12 46 lc --- --- --- 12 46 s --- --- --- --- --- 12 46 1.05 1,366 539 05 12 67 lc --- --- --- 12 67 s --- --- --- --- --- 12 67 1 10 1,447 539 10 1282 lc --- --- --- 12 82 s --- --- --- --- --- 12 82 1 15 1,528 539 15 12 94 ic --- --- --- 12 94 s --- --- --- --- --- 12 94 1 20 1,609 539 20 13 05 ic --- --- --- 13 05 s --- --- --- --- --- 13 05 1 25 1,690 539 25 13 15 is --- --- --- 13 14 s --- --- --- --- --- 13 14 1 30 1,771 539 30 13 24 ic --- --- --- 13 23 s --- --- --- --- --- 13 23 1 35 1,852 539 35 13 32 is --- --- --- 13 31 s --- --- --- --- --- 13 31 1 40 1,933 539.40 13 40 is --- --- --- 13 39 s --- --- --- --- --- 13 39 1 45 2,013 539 45 13 47 is --- --- --- 13 47 s --- --- --- --- --- 13 47 1 50 2,094 539 50 13 55 ic --- --- --- 13 54 s --- --- --- --- --- 13 54 35 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 10 TOTAL TO SWM C Hydrograph type = Combine Peak discharge = 6.662 cfs Storm frequency = 2 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 13,655 cuft Inflow hyds. = 5, 9 Contrib. drain. area = 0.830 ac TOTAL TO SWM C Q (cfs) Hyd. No. 10--2 Year Q (cfs) 7 00 I 7.00 6 00 6 00 5 00 5 00 4.00 - 4 00 3.00 3 00 2 00 2 00 1 00 1.00 0 00 - 0 00 00 20 40 60 8.0 10.0 120 140 160 180 20.0 22.0 Time (hrs) Hyd No 10 Hyd No. 5 Hyd No 9 36 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 11 SWM C Hydrograph type = Reservoir Peak discharge = 1.726 cfs Storm frequency = 2 yrs Time to peak = 12.10 hrs Time interval = 1 min Hyd. volume = 13,653 cuft Inflow hyd. No. = 10 - TOTAL TO SWM C Max. Elevation = 533 83 ft Reservoir name = SWM C Max. Storage = 4,360 cuft Storage Indication method used SWM C Q (cfs) Q (cfs) Hyd No 11 --2 Year 7 00 I 7.00 6 00 6 00 5.00 5.00 4.00 4.00 3 00 3 00 2.00 2 00 1.00 1.00 0.00 000 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No 11 Hyd No 10 11111111 Total storage used = 4,360 cuft Pond Report 37 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Pond No. 3 - SWM C Pond Data UG Chambers-Invert elev =531 00 ft, Rise x Span=5 00 x 18 00 ft, Barrel Len=71 25 ft, No Barrels= 1, Slope=0 00%, Headers=No Encasement-Invert elev =530 00 ft, Width=20 00 ft, Height=7 00 ft, Voids=40 00% Stage/Storage Table Stage(ft) Elevation(ft) Contour area(sqft) Incr.Storage(cuft) Total storage(cuft) 0 00 530 00 n/a 0 0 0 70 530 70 n/a 399 399 1 40 531 40 n/a 707 1,106 2 10 532 10 n/a 938 2,044 2 80 532 80 n/a 938 2,982 3 50 533 50 n/a 938 3,920 4 20 534 20 n/a 938 4,857 4 90 534 90 n/a 938 5,795 5 60 535 60 n/a 938 6,733 6 30 536 30 n/a 707 7,440 7 00 537 00 n/a 399 7,839 Culvert/Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise(in) = 18 00 6 00 0.00 0 00 Crest Len(ft) = 4 00 0 00 0 00 0 00 Span(in) = 18 00 6 00 0 00 0 00 Crest El.(ft) = 534 25 0 00 0 00 0 00 No.Barrels = 1 1 0 0 Weir Coeff. = 3 33 3 33 3 33 3 33 Invert El.(ft) = 529 90 530 00 0 00 0 00 Weir Type = Rect --- --- --- Length(ft) = 45 27 0 00 0 00 0 00 Multi-Stage = Yes No No No Slope(%) = 1 26 0 00 0 00 n/a N-Value = 013 013 013 n/a Orifice Coeff. = 0 60 0 60 0 60 0 60 Exfil.(in/hr) = 0 000(by Contour) Multi-Stage = n/a Yes No No TW Elev.(ft) = 0 00 Note Culvert/Onfice outflows are analyzed under inlet(ic)and outlet(oc)control Weir risers checked for orifice conditions(ic)and submergence(s) Stage I Storage/ Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0 00 0 530 00 0 00 0 00 --- --- 0 00 --- --- --- --- --- 0 000 0 07 40 530 07 0 06 Ic 0 02 ic --- --- 0 00 --- --- --- --- --- 0 015 0 14 80 530 14 0 06 is 0 06 is --- --- 0 00 --- --- --- --- --- 0 057 0 21 120 530 21 0 13 Ic 0 12 ic --- --- 0 00 --- --- --- --- --- 0 123 0 28 160 530 28 0 22 Ic 0 21 Ic --- --- 0 00 --- --- --- --- --- 0 205 0 35 200 530 35 0 31 is 0 30 Ic --- --- 0 00 --- --- --- --- 0 298 0 42 239 530 42 0 41 is 0 39 is --- --- 0 00 --- --- --- --- --- 0 389 0 49 279 530 49 0 47 is 0 47 IC --- --- 0 00 --- --- --- --- --- 0 466 0 56 319 530 56 0 53 Ic 0 53 Ic --- --- 0 00 --- --- --- --- --- 0 526 0.63 359 530 63 0 58 Ic 0 58 Ic --- --- 0 00 --- --- --- --- --- 0 583 0 70 399 530 70 0 65 Ic 0 63 Ic --- --- 0 00 --- --- --- --- --- 0 634 0 77 470 530 77 0 69 ic 0 68 Ic --- --- 0 00 --- --- --- --- --- 0 676 0 84 540 530 84 0 72 is 0 71 Ic --- --- 0 00 --- --- --- --- --- 0 715 0 91 611 530 91 0 76 Ic 0 75 Ic --- --- 0 00 --- --- --- --- --- 0 751 0 98 682 530.98 0.80 Ic 0 79 Ic --- --- 0 00 --- --- --- --- --- 0 786 1 05 753 531 05 0 84 Ic 0 82 Ic --- --- 0 00 --- --- --- --- --- 0 819 1 12 823 531 12 0 85 is 0 85 Ic --- --- 0 00 --- --- --- --- --- 0 851 1 19 894 531 19 0 89 Ic 0 89 ic --- --- 0 00 --- --- --- --- --- 0 886 1 26 965 531 26 0 93 Ic 0 92 Ic --- --- 0 00 --- --- --- --- --- 0 916 1 33 1,035 531 33 0 97 Ic 0 94 is --- --- 0 00 --- --- --- --- --- 0 945 1 40 1,106 531 40 0 98 Ic 0 98 is --- --- 0 00 --- --- --- --- --- 0 975 1 47 1,200 531 47 1 02 Ic 1 00 Ic --- --- 0 00 --- --- --- --- --- 1 004 1 54 1,294 531 54 1 06 Ic 1 03 is --- --- 0 00 --- --- --- --- --- 1 030 1 61 1,387 531 61 1 06 ic 1 06 Ic --- --- 0 00 --- --- --- --- --- 1 060 1 68 1,481 531 68 1 11 Ic 1 08 Ic --- --- 0 00 --- --- --- --- --- 1 085 1 75 1,575 531 75 1 11 Ic 1 11 Ic --- --- 0 00 --- --- --- --- --- 1 112 1 82 1,669 531 82 1 16 Ic 1 14 Ic --- --- 0 00 --- --- --- --- --- 1 137 1 89 1,763 531.89 1 16 Ic 1 16 Ic --- --- 0 00 --- --- --- --- --- 1 163 1 96 1,856 531 96 1 21 ic 1 19 Ic --- --- 0 00 --- --- --- --- --- 1 186 2 03 1,950 532 03 1 21 Ic 1 21 Ic --- --- 0 00 --- --- --- --- --- 1 212 2 10 2,044 532 10 1 26 Ic 1 23 Ic --- --- 0 00 --- --- --- --- --- 1 234 2 17 2,138 532 17 1 26 Ic 1 26 Ic --- --- 0 00 --- --- --- --- --- 1 259 Continues on next page 38 SWM C Stage/Storage I Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 2 24 2,231 532 24 1 31 is 1 28 is --- --- 0 00 --- --- --- --- --- 1 280 2 31 2,325 532 31 1 31 is 1 30 is --- --- 0 00 --- --- --- --- --- 1 304 2 38 2,419 532 38 1 32 is 1 32 is --- --- 0 00 --- --- --- --- --- 1 325 2 45 2,513 532 45 1 37 is 1 35 is --- --- 0 00 --- --- --- --- --- 1 347 2 52 2,607 532 52 1 37 is 1 37 is --- --- 0 00 --- --- --- --- --- 1 370 2 59 2,700 532 59 1 42 is 1 39 is --- --- 0 00 --- --- --- --- --- 1 389 2.66 2,794 532 66 1 42 is 1 41 is --- --- 0 00 --- --- --- --- --- 1 412 2 73 2,888 532 73 1 43 is 1 43 is --- --- 0 00 --- --- --- --- --- 1 431 2 80 2,982 532 80 1 48 is 1 45 is --- --- 0 00 --- --- --- --- --- 1 452 2 87 3,075 532 87 1 48 is 1 47 lc --- --- 0 00 --- --- --- --- --- 1 473 2 94 3,169 532.94 1 49 is 1 49 is --- --- 0 00 --- --- --- --- --- 1 491 3 01 3,263 533 01 1 53 is 1 51 is --- --- 0 00 --- --- --- --- --- 1 512 3 08 3,357 533 08 1 53 is 1 53 is --- --- 0 00 --- --- --- --- 1 532 3 15 3,451 533.15 1.55 is 1 55 is --- --- 0 00 --- --- --- --- --- 1 550 3 22 3,544 533 22 1 59 ic 1 57 is --- --- 0 00 --- --- --- --- --- 1 569 3 29 3,638 533.29 1 59 is 1 59 is --- --- 0 00 --- --- --- --- --- 1 589 3 36 3,732 533 36 1 61 is 1 61 is --- --- 0 00 --- --- --- --- --- 1 606 3 43 3,826 533 43 1 65 is 1 63 is --- --- 0 00 --- --- --- --- --- 1 625 3 50 3,920 533 50 1 65 is 1 64 is --- --- 0 00 --- --- --- --- --- 1 644 3 57 4,013 533 57 1 66 is 1 66 is --- --- 0 00 --- --- --- --- --- 1 661 3 64 4,107 533 64 1 71 is 1 68 is --- --- 0 00 --- --- --- --- --- 1 679 3 71 4,201 533 71 1 71 is 1 70 is --- --- 0 00 --- --- --- --- --- 1 697 3 78 4,295 533 78 1 72 is 1 72 is --- --- 0 00 --- --- --- --- --- 1 715 3 85 4,388 533 85 1 77 is 1 73 Ic --- --- 0 00 --- --- --- --- --- 1 731 3 92 4,482 533 92 1 77 is 1 75 is --- --- 0 00 --- --- --- --- --- 1 749 3 99 4,576 533 99 1 77 is 1 77 is --- --- 0 00 --- --- --- --- --- 1 767 4 06 4,670 534 06 1 78 lc 1 78 is --- --- 0 00 --- --- --- --- --- 1 783 4 13 4,764 534 13 1 84 is 1 80 is --- --- 0 00 --- --- --- --- --- 1 799 4 20 4,857 534 20 1 84 is 1 82 is --- --- 0 00 --- --- --- --- --- 1 816 4 27 4,951 534 27 1.90 Ic 1 83 is --- --- 0 04 --- --- --- --- --- 1 868 4 34 5,045 534 34 2 23 lc 1 83 is --- --- 0 36 --- --- --- --- --- 2 193 4 41 5,139 534 41 2 73 lc 1 83 is --- --- 0 85 --- --- --- --- --- 2 682 4 48 5,233 534 48 3 33 ic 1 82 is --- --- 1 47 --- --- --- --- --- 3 293 4 55 5,326 534 55 4 03 is 1 82 is --- --- 2 19 --- --- --- --- --- 4 005 4 62 5,420 534.62 4.80 lc 1 81 is --- --- 3 00 --- --- --- --- --- 4 804 4 69 5,514 534 69 5 70 lc 1 79 is --- --- 3 89 --- --- --- --- --- 5 680 4 76 5,608 534 76 6 62 is 1 77 is --- --- 4 85 --- --- --- --- --- 6 624 4 83 5,701 534 83 7 61 oc 1 73 is --- --- 5 88 --- --- --- --- --- 7 611 4 90 5,795 534 90 8 67 oc 1 69 is --- --- 6 98 --- --- --- --- --- 8 673 4 97 5,889 534 97 9 77 is 1 64 is --- --- 8 14 --- --- --- --- --- 9 775 5 04 5,983 535 04 10 92 is 1 57 lc --- --- 9 35 --- --- --- --- --- 10 92 5 11 6,077 535 11 12 10 is 1 48 is --- --- 10 62 --- --- --- --- --- 12 10 5 18 6,170 535 18 13 31 is 1 36 is --- --- 11 95 --- --- --- --- --- 13 31 5 25 6,264 535 25 14 55 is 1 22 lc --- --- 13 32 --- --- --- --- --- 14 55 5 32 6,358 535 32 15 79 is 1 05 lc --- --- 14 75 --- --- --- --- --- 15 79 5 39 6,452 535 39 16 61 lc 0 91 is --- --- 15 70 s --- --- --- --- --- 16 61 5 46 6,545 535 46 17 06 is 0 84 is --- --- 16 22 s --- --- --- --- --- 17 06 5 53 6,639 535 53 17 43 is 0 78 is --- --- 16 65 s --- --- --- --- --- 17 43 5 60 6,733 535 60 17 74 is 0 73 lc --- --- 17 01 s --- --- --- --- --- 17 74 5 67 6,804 535 67 18 02 is 0 69 is --- --- 17 33 s --- --- --- --- --- 18 02 5 74 6,874 535 74 18.28 is 0 65 is --- --- 17 63 s --- --- --- --- --- 18 28 5 81 6,945 535 81 18 51 is 0 62 is --- --- 17 89 s --- --- --- --- --- 18 51 5 88 7,016 535 88 18 73 is 0 59 lc --- --- 18 14 s --- --- --- --- --- 18 73 5 95 7,087 535 95 18 93 Ic 0 56 is --- --- 18 37 s --- --- --- --- --- 18 93 6 02 7,157 536.02 19 12 is 0 53 is --- --- 18 59 s --- --- --- --- --- 19 12 6 09 7,228 536 09 19 31 Ic 0 51 is --- --- 18 80 s --- --- --- --- --- 19 30 6 16 7,299 536 16 19 48 is 0 49 is --- --- 18 99 s --- --- --- --- --- 19 48 6.23 7,369 536 23 19 65 is 0 47 is --- --- 19 18 s --- --- --- --- --- 19 65 6 30 7,440 536 30 19 81 is 0 45 lc --- --- 19 36 s --- --- --- --- --- 19 81 6 37 7,480 536 37 19 97 is 0 43 Ic --- --- 19 54 s --- --- --- --- --- 19 97 6 44 7,520 536 44 20 12 is 0 42 is --- --- 19 70 s --- --- --- --- --- 20 12 6 51 7,560 536 51 20 27 lc 0 40 lc --- --- 19 87 s --- --- --- --- --- 20.27 6 58 7,600 536 58 20 42 is 0 39 is --- --- 20 03 s --- --- --- --- --- 20 42 6 65 7,640 536 65 20 56 is 0 38 is --- --- 20 18 s --- --- --- --- --- 20 56 6 72 7,679 536 72 20 70 is 0 36 is --- --- 20 34 s --- --- --- --- --- 20 70 6 79 7,719 536 79 20 84 is 0 35 is --- --- 20 49 s --- --- --- --- --- 20 84 6 86 7,759 536 86 20 98 is 0 34 is --- --- 20 63 s --- --- --- --- --- 20 98 6 93 7,799 536 93 21 11 is 0 33 is --- --- 20 78 s --- --- --- --- --- 21 11 7 00 7,839 537 00 21 24 is 0 32 is --- --- 20 92 s --- --- --- --- --- 21 24 End 39 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 12 POA-1 Hydrograph type = Combine Peak discharge = 5.218 cfs Storm frequency = 2 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 21,203 cuft Inflow hyds. = 6, 8, 11 Contrib. drain area = 0.440 ac POA-1 Q (cfs) Q (cfs) Hyd. No. 12 --2 Year 6 00 6 00 5 00 5 00 400 400 3.00 3 00 200 200 100 100 000 -- 000 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No 12 Hyd No 6 Hyd No. 8 Hyd No 11 10-YEAR DESIGN STORM HYDROGRAPHS AND ROUTING CALCULATIONS 10-YEAR SUMMARY REPORT 10-YEAR INDIVIDUAL HYDROGRAPHS AND POND REPORTS 41 Hydrograph Summary Report Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 1Hyd. Hydrograph Peak Time Time to 'Hyd. Inflow Maximum Total Hydrograph No. type flow interval Peak volume hyd(s) elevation strge used Description (origin) (cfs) (min) (min) (cuft) (ft) (cuft) 1 SCS Runoff 15 76 1 718 32,350 POA-1 (PRE) 2 SCS Runoff 2 513 1 718 5,079 ----- TO BMP A 3 SCS Runoff 1 385 1 718 2,799 ---- --- TO X-3(UNCONTROLLED) 4 SCS Runoff 4 783 1 717 10,445 ----- ---- — TO BMP B 5 SCS Runoff 6 202 1 717 13,546 TO SWM C 6 SCS Runoff 3 288 1 717 7,181 --- TO POA-1 (UNCONTROLLED) 7 Reservoir 2 494 1 718 4,720 2 544 91 528 BMP A 8 Combine 3 879 1 718 7,519 3,7 — ------ TOTAL FROM DA A 9 Reservoir 4 722 1 718 9,856 4 538 75 939 BMP B 10 Combine 10 86 1 718 23,402 5,9 --- TOTAL TO SWM C 11 Reservoir 9 025 1 720 23,399 10 534 93 5,825 SWM C 12 Combine 15 28 1 720 38,100 6,8, 11 --- POA-1 Pre-Post Analysls.gpw Return Period 10 Year Friday, 11 /20/2020 42 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 1 POA-1 (PRE) Hydrograph type = SCS Runoff Peak discharge = 15.76 cfs Storm frequency = 10 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 32,350 cuft Drainage area = 2 670 ac Curve number = 79 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 5.50 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 POA-1 (PRE) Q (cfs) Hyd No 1 -- 10 Year Q (cfs) 18 00 18.00 15 00 15 00 12 00 12 00 9.00 9 00 6.00 6.00 300 300 0.00 0 00 0 2 4 6 8 10 12 14 16 18 20 22 24 Hyd No 1 Time (hrs) 43 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 2 TO BMP A Hydrograph type = SCS Runoff Peak discharge = 2.513 cfs Storm frequency = 10 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 5,079 cuft Drainage area = 0.490 ac Curve number = 74 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 5.50 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO BMP A Q (cfs) Hyd No 2-- 10 Year Q (cfs) 3 00 3 00 2 00 _ 2 00 1 00 1 00 0 00 — - 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Hyd No. 2 Time (hrs) 44 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 3 TO X-3 (UNCONTROLLED) Hydrograph type = SCS Runoff Peak discharge = 1.385 cfs Storm frequency = 10 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 2,799 cuft Drainage area = 0.270 ac Curve number = 74 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 5.50 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO X-3 (UNCONTROLLED) Q (cfs) Hyd No 3-- 10 Year Q (cfs) 2 00 2 00 1 00 1 00 000 - - 000 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No 3 45 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 4 TO BMP B Hydrograph type = SCS Runoff Peak discharge = 4.783 cfs Storm frequency = 10 yrs Time to peak = 11.95 hrs Time interval = 1 min Hyd. volume = 10,445 cuft Drainage area = 0.640 ac Curve number = 90 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 5.50 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO BMP B Q (cfs) Hyd No 4-- 10 Year Q (cfs) 5 00 5.00 400 400 300 300 2.00 2.00 1 00 1.00 0.00 - 0 00 0.0 20 40 60 80 100 12.0 140 160 180 200 Time (hrs) Hyd No. 4 46 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk,Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 5 TO SWM C Hydrograph type = SCS Runoff Peak discharge = 6.202 cfs Storm frequency = 10 yrs Time to peak = 11.95 hrs Time interval = 1 min Hyd. volume = 13,546 cuft Drainage area = 0.830 ac Curve number = 90 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 5.50 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO SWM C Q (cfs) Hyd No 5-- 10 Year Q (cfs) 7.00 7 00 6 00 6 00 5 00 5 00 4 00 4 00 3 00 3 00 2.00 2 00 1 00 1 00 0.00 J ' 0 00 00 20 40 6.0 8.0 100 120 140 16.0 180 200 Time (hrs) Hyd No 5 47 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 6 TO POA-1 (UNCONTROLLED) Hydrograph type = SCS Runoff Peak discharge = 3.288 cfs Storm frequency = 10 yrs Time to peak = 11.95 hrs Time interval = 1 min Hyd. volume = 7,181 cuft Drainage area = 0.440 ac Curve number = 90 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 5.50 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 TO POA-1 (UNCONTROLLED) Q (cfs) Hyd. No. 6 -- 10 Year Q (cfs) 4 00 4.00 3 00 3 00 2 00 2.00 1 00 1 00 0 00 0.00 00 2.0 4.0 60 80 100 120 140 160 180 200 Time (hrs) Hyd No 6 48 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 7 BMP A Hydrograph type = Reservoir Peak discharge = 2.494 cfs Storm frequency = 10 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 4,720 cuft Inflow hyd. No. = 2 - TO BMP A Max. Elevation = 544.91 ft Reservoir name = BMP A Max. Storage = 528 cuft Storage Indication method used BMP A Q (cfs) Hyd No 7-- 10 Year 0 (cfs) 3 00 3.00 200 2.00 1 00 I 1.00 000 - -- 000 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No. 7 Hyd No 2 II I l l l l ➢ Total storage used = 528 cuft Pond Report 49 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Pond No. 1 - BMP A Pond Data Contours-User-defined contour areas Average end area method used for volume calculation Begining Elevation=544 25 ft Stage/Storage Table Stage(ft) Elevation(ft) Contour area(sqft) Incr.Storage(cuft) Total storage(cuft) 0 00 544 25 672 0 0 0 75 545 00 922 598 598 1 75 546 00 1,347 1,135 1,732 Culvert I Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise(in) = 15 00 0 00 0 00 0 00 Crest Len(ft) = 11 30 0 00 0 00 0 00 Span(in) = 15 00 0 00 0 00 0 00 Crest El.(ft) = 544 75 0 00 0 00 0 00 No.Barrels = 1 0 0 0 Weir Coeff. = 3 33 3 33 3 33 3 33 Invert El.(ft) = 539 82 0 00 0 00 0 00 Weir Type = 1 --- --- --- Length(ft) = 61 00 0 00 0 00 0 00 Multi-Stage = Yes No No No Slope(%) = 0 60 0 00 0 00 n/a N-Value = 010 013 013 n/a Orifice Coeff. = 0 60 0 60 0 60 0 60 Exfil.(in/hr) = 0 000(by Wet area) Multi-Stage = n/a No No No TW Elev (ft) = 0 00 Note Culvert/Orifice outflows are analyzed under inlet(ic)and outlet(oc)control Weir risers checked for orifice conditions(ic)and submergence(s) Stage/Storage/ Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0 00 0 544 25 0 00 --- --- --- 0 00 --- --- --- --- --- 0 000 0 08 60 544 33 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 15 120 544 40 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 22 179 544 47 11 52 is --- --- --- 0.00 --- --- --- --- --- 0 000 0 30 239 544 55 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 38 299 544 63 11 52 lc --- --- --- 0 00 --- --- --- --- --- 0 000 0 45 359 544 70 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 52 418 544 78 11 52 ic --- --- --- 0 15 --- --- --- --- --- 0 150 0 60 478 544 85 11 52 is --- --- --- 1 19 --- --- --- --- --- 1 192 0 68 538 544 93 11 52 lc --- --- --- 2 76 --- --- --- --- --- 2 757 0 75 598 545 00 11 52 is --- --- --- 4 70 --- --- --- --- --- 4 704 0 85 711 545 10 11 52 is --- --- --- 7 79 --- --- --- --- --- 7 791 0 95 825 545 20 11 52 lc --- --- --- 11 36 --- --- --- --- --- 11 36 1 05 938 545 30 12 67 lc --- --- --- 12 67 s --- --- --- --- --- 12 67 1 15 1,052 545 40 12 94 ic --- --- --- 12 94 s --- --- --- --- --- 12 94 1 25 1,165 545 50 13 15 is --- --- --- 1314 s --- --- --- --- --- 13 14 1 35 1,278 545 60 13 32 lc --- --- --- 13 31 s --- --- --- --- --- 13 31 1 45 1,392 545 70 13 47 ic --- --- --- 13 46 s --- --- --- --- --- 13 46 1 55 1,505 545 80 13 62 is --- --- --- 13 61 s --- --- --- --- --- 13 61 1 65 1,619 545 90 13 76 lc --- --- --- 13 75 s --- --- --- --- --- 13 75 1 75 1,732 546 00 13 89 ic --- --- --- 13 88 s --- --- --- --- --- 13 88 50 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 8 TOTAL FROM DA. A Hydrograph type = Combine Peak discharge = 3.879 cfs Storm frequency = 10 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 7,519 cuft Inflow hyds. = 3, 7 Contrib. drain. area = 0.270 ac TOTAL FROM DA. A Q (cfs) Q (cfs) Hyd. No 8-- 10 Year 400 400 300 300 2 00 2.00 1 00 1 00 000 000 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No 8 Hyd No 3 Hyd No 7 51 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 9 BMP B Hydrograph type = Reservoir Peak discharge = 4.722 cfs Storm frequency = 10 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 9,856 cuft Inflow hyd. No. = 4 - TO BMP B Max. Elevation = 538.75 ft Reservoir name = BMP B Max. Storage = 939 cuft Storage Indication method used BMP B Q (cfs) Hyd No 9 -- 10 Year Q (cfs) 5 00 1 5 00 4 00 4 00 I 3 00 3 00 2.00 2 00 1 00 1 00 0 00 "'"* 0 00 00 20 4.0 6.0 8.0 100 120 140 160 18.0 20.0 Time (hrs) Hyd No. 9 Hyd No 4 11111111 Total storage used = 939 cuft Pond Report 52 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Pond No. 2 - BMP B Pond Data Contours-User-defined contour areas Average end area method used for volume calculation Begining Elevation=538 00 ft Stage/Storage Table Stage(ft) Elevation(ft) Contour area(sqft) Incr.Storage(cuft) Total storage(cuft) 0 00 538 00 1,077 0 0 0 50 538 50 1,282 590 590 1 00 539 00 1,501 696 1,286 1 50 539 50 1,734 809 2,094 Culvert/Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise(in) = 15 00 0 00 0 00 0 00 Crest Len(ft) = 11 30 0 00 0 00 0 00 Span(in) = 15 00 0 00 0 00 0 00 Crest El.(ft) = 538 50 0 00 0 00 0 00 No.Barrels = 1 0 0 0 Weir Coeff. = 3 33 3 33 3 33 3 33 Invert El.(ft) = 533 57 0 00 0 00 0 00 Weir Type = 1 --- --- --- Length(ft) = 15 00 0 00 0 00 0 00 Multi-Stage = Yes No No No Slope(%) = 0 60 0 00 0 00 n/a N-Value = 010 013 013 n/a Orifice Coeff. = 0 60 0 60 0 60 0 60 Exfil.(in/hr) = 0 000(by Wet area) Multi-Stage = n/a No No No TW Elev.(ft) = 0 00 Note Culvert/Orifice outflows are analyzed under inlet(ic)and outlet(oc)control Weir risers checked for orifice conditions(ic)and submergence(s) Stage/Storage I Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0 00 0 538 00 0 00 --- --- --- 0 00 --- --- --- --- --- 0 000 0 05 59 538 05 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 10 118 538 10 11 52 is --- --- --- 0 00 --- --- --- --- --- 0.000 0 15 177 538 15 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 20 236 538 20 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 25 295 538 25 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 30 354 538 30 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 35 413 538 35 11 52 is --- --- --- 0 00 --- --- --- --- --- 0 000 0 40 472 538 40 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 45 531 538 45 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 50 590 538 50 11 52 ic --- --- --- 0 00 --- --- --- --- --- 0 000 0 55 659 538 55 11 52 ic --- --- --- 0 42 --- --- --- --- --- 0 421 0 60 729 538 60 11 52 ic --- --- --- 1 19 --- --- --- --- --- 1 189 0 65 798 538 65 11 52 is --- --- --- 2 19 --- --- --- --- --- 2 187 0 70 868 538 70 11 52 ic --- --- --- 3 37 --- --- --- --- --- 3 366 0 75 938 538 75 11 52 is --- --- --- 4 70 --- --- --- --- --- 4 700 0 80 1,007 538 80 11 52 is --- --- --- 6 18 --- --- --- --- --- 6 181 0 85 1,077 538 85 11 52 is --- --- --- 7 79 --- --- --- --- --- 7 789 0 90 1,146 538 90 11 52 is --- --- --- 9 52 --- --- --- --- --- 9 516 0 95 1,216 538 95 11 52 is --- --- --- 11 35 --- --- --- --- --- 11 35 1 00 1,286 539 00 12.46 is --- --- --- 12.46 s --- --- --- --- --- 12.46 1 05 1,366 539 05 12 67 is --- --- --- 12 67 s --- --- --- --- --- 12 67 1 10 1,447 539 10 12 82 is --- --- --- 12 82 s --- --- --- --- --- 12 82 1 15 1,528 539 15 12 94 is --- --- --- 12 94 s --- --- --- --- --- 12 94 1 20 1,609 539 20 13 05 is --- --- --- 13 05 s --- --- --- --- --- 13 05 1 25 1,690 539 25 13 15 is --- --- --- 13 14 s --- --- --- --- --- 13 14 1 30 1,771 539 30 13.24 ic --- --- --- 13 23 s --- --- --- --- --- 13 23 1 35 1,852 539 35 13 32 is --- --- --- 13 31 s --- --- --- --- --- 13 31 1 40 1,933 539 40 13 40 is --- --- --- 13 39 s --- --- --- --- --- 13 39 1 45 2,013 539 45 13 47 ic --- --- --- 13 47 s --- --- --- --- --- 13 47 1 50 2,094 539 50 13.55 is --- --- --- 13 54 s --- --- --- --- --- 13 54 53 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 10 TOTAL TO SWM C Hydrograph type = Combine Peak discharge = 10.86 cfs Storm frequency = 10 yrs Time to peak = 11.97 hrs Time interval = 1 min Hyd. volume = 23,402 cuft Inflow hyds. = 5, 9 Contrib. drain. area = 0.830 ac TOTAL TO SWM C Q (cfs) Hyd. No. 10-- 10 Year Q (cfs) 12.00 12 00 10.00 10 00 8 00 8.00 6 00 — 6 00 4 00 - / 4 00 2 00 2.00 0 00 - — " 19 — 0.00 00 20 40 60 80 100 120 140 160 180 200 Time (hrs) Hyd No 10 Hyd No. 5 Hyd No. 9 54 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 11 SWM C Hydrograph type = Reservoir Peak discharge = 9.025 cfs Storm frequency = 10 yrs Time to peak = 12.00 hrs Time interval = 1 min Hyd. volume = 23,399 cuft Inflow hyd. No. = 10 - TOTAL TO SWM C Max. Elevation = 534.93 ft Reservoir name = SWM C Max. Storage = 5,825 cuft Storage Indication method used SWM C o (cfs) Hyd No 11 -- 10 Year Q (cfs) 12 00 12 00 10.00 10 00 8 00 - 8 00 6 00 6 00 4 00 4.00 2.00 2.00 000 . 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No 11 Hyd No 10 11111111 Total storage used = 5,825 cult Pond Report 55 Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk, Inc v2019 2 Friday, 11 /20/2020 Pond No. 3 - SWM C Pond Data UG Chambers-Invert elev =531 00 ft, Rise x Span=5 00 x 18 00 ft, Barrel Len=71 25 ft, No Barrels=1, Slope=0 00%, Headers=No Encasement-Invert elev =530 00 ft, Width=20 00 ft, Height=7 00 ft, Voids=40 00% Stage/Storage Table Stage(ft) Elevation(ft) Contour area(sqft) Incr.Storage(cuft) Total storage(cuft) 0 00 530 00 n/a 0 0 0 70 530 70 n/a 399 399 1 40 531 40 n/a 707 1,106 2 10 532 10 n/a 938 2,044 2 80 532 80 n/a 938 2,982 3 50 533 50 n/a 938 3,920 4 20 534 20 n/a 938 4,857 4 90 534 90 n/a 938 5,795 5 60 535 60 n/a 938 6,733 6 30 536 30 n/a 707 7,440 7 00 537 00 n/a 399 7,839 Culvert/Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise(in) = 18 00 6 00 0 00 0 00 Crest Len(ft) = 4 00 0 00 0 00 0 00 Span(in) = 18 00 6 00 0 00 0 00 Crest El.(ft) = 534 25 0 00 0 00 0 00 No.Barrels = 1 1 0 0 Weir Coeff. = 3 33 3.33 3 33 3 33 Invert El.(ft) = 529 90 530 00 0 00 0 00 Weir Type = Rect --- --- --- Length(ft) = 45 27 0 00 0 00 0 00 Multi-Stage = Yes No No No Slope(%) = 1 26 0 00 0 00 n/a N-Value = 013 013 013 n/a Orifice Coeff. = 0 60 0 60 0 60 0 60 Exfil.(in/hr) = 0 000(by Contour) Multi-Stage = n/a Yes No No TW Elev.(ft) = 0 00 Note Culvert/Onfice outflows are analyzed under inlet(ic)and outlet(oc)control Weir risers checked for orifice conditions(ic)and submergence(s) Stage I Storage/ Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0 00 0 530 00 0 00 0 00 --- --- 0 00 --- --- --- --- --- 0 000 0 07 40 530 07 0 06 is 0 02 lc --- --- 0 00 --- --- --- --- --- 0 015 0 14 80 530 14 0 06 lc 0 06 ic --- --- 0 00 --- --- --- --- --- 0 057 0 21 120 530 21 0 13 ic 0 12 ic --- --- 0 00 --- --- --- --- --- 0 123 0 28 160 530 28 0 22 ic 0 21 lc --- --- 0 00 --- --- --- --- --- 0 205 0 35 200 530 35 0 31 ic 0 30 lc --- --- 0 00 --- --- --- --- --- 0 298 0 42 239 530 42 0 41 ic 0 39 lc --- --- 0 00 --- --- --- --- --- 0 389 0 49 279 530 49 0 47 lc 0 47 ic --- --- 0 00 --- --- --- --- --- 0 466 0 56 319 530 56 0 53 lc 0 53 ic --- --- 0 00 --- --- --- --- --- 0 526 0 63 359 530.63 0 58 lc 0 58 is --- --- 0 00 --- --- --- --- --- 0 583 0 70 399 530 70 0 65 lc 0 63 ic --- --- 0 00 --- --- --- --- --- 0 634 0 77 470 530 77 0 69 lc 0 68 ic --- --- 0 00 --- --- --- --- --- 0 676 0 84 540 530 84 0 72 lc 0 71 lc --- --- 0 00 --- --- --- --- --- 0 715 0 91 611 530 91 0 76 ic 0 75 lc --- --- 0 00 --- --- --- --- --- 0 751 0 98 682 530 98 0 80 ic 0 79 ic --- --- 0 00 --- --- --- --- --- 0 786 1 05 753 531 05 0 84 lc 0 82 lc --- --- 0 00 --- --- --- --- --- 0 819 1 12 823 531 12 0 85 ic 0 85 ic --- --- 0 00 --- --- --- --- --- 0 851 1 19 894 531 19 0 89 lc 0 89 ic --- --- 0 00 --- --- --- --- --- 0 886 1 26 965 531 26 0 93 ic 0 92 ic --- --- 0 00 --- --- --- --- --- 0 916 1 33 1,035 531 33 0 97 ic 0 94 ic --- --- 0 00 --- --- --- --- --- 0 945 1 40 1,106 531 40 0 98 ic 0 98 ic --- --- 0 00 --- --- --- --- --- 0 975 1 47 1,200 531 47 1.02 lc 1 00 lc --- --- 0 00 --- --- --- --- --- 1 004 1 54 1,294 531 54 1 06 lc 1 03 ic --- --- 0 00 --- --- --- --- --- 1 030 1 61 1,387 531 61 1.06 ic 1 06 ic --- --- 0 00 --- --- --- --- --- 1 060 1 68 1,481 531 68 1 11 ic 1 08 lc --- --- 0 00 --- --- --- --- --- 1 085 1 75 1,575 531 75 1 11 ic 1 11 lc --- --- 000 --- --- --- --- --- 1 112 1 82 1,669 531 82 1 16 ic 1 14 lc --- --- 0 00 --- --- --- --- --- 1 137 1 89 1,763 531 89 1 16 ic 1 16 lc --- --- 0 00 --- --- --- --- --- 1 163 1 96 1,856 531 96 1 21 lc 1 19 ic --- --- 0 00 --- --- --- --- --- 1 186 2 03 1,950 532 03 1 21 lc 1 21 lc --- --- 0 00 --- --- --- --- --- 1 212 2 10 2,044 532 10 1 26 ic 1 23 ic --- --- 0 00 --- --- --- --- --- 1 234 2 17 2,138 532 17 1 26 lc 1.26 ic --- --- 0 00 --- --- --- --- --- 1 259 Continues on next page 56 SWM C Stage/Storage/ Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 2 24 2,231 532 24 1 31 is 1 28 is --- --- 0 00 --- --- --- --- --- 1 280 2 31 2,325 532 31 1 31 is 1 30 is --- --- 0 00 --- --- --- --- --- 1 304 2 38 2,419 532 38 1 32 is 1 32 is --- --- 0 00 --- --- --- --- --- 1 325 2 45 2,513 532 45 1 37 is 1 35 is --- --- 0 00 --- --- --- --- --- 1 347 2 52 2,607 532 52 1 37 is 1 37 is --- --- 0 00 --- --- --- --- --- 1 370 2 59 2,700 532 59 1 42 is 1 39 is --- --- 0 00 --- --- --- --- --- 1 389 2 66 2,794 532 66 1 42 is 1 41 is --- --- 0 00 --- --- --- --- --- 1 412 2 73 2,888 532 73 1 43 is 1 43 is --- --- 0 00 --- --- --- --- --- 1 431 2 80 2,982 532 80 1 48 is 1 45 is --- --- 0 00 --- --- --- --- --- 1 452 2 87 3,075 532 87 1 48 is 1 47 is --- --- 0 00 --- --- --- --- --- 1 473 2 94 3,169 532 94 1 49 is 1 49 is --- --- 0 00 --- --- --- --- --- 1 491 3 01 3,263 533 01 1 53 is 1 51 is --- --- 0 00 --- --- --- --- --- 1 512 3 08 3,357 533 08 1 53 is 1 53 is --- --- 0 00 --- --- --- --- --- 1 532 3 15 3,451 533 15 1 55 is 1 55 is --- --- 0 00 --- --- --- --- --- 1 550 3 22 3,544 533 22 1 59 is 1 57 is --- --- 0.00 --- --- --- --- --- 1 569 3 29 3,638 533 29 1 59 is 1 59 is --- --- 0 00 --- --- --- --- --- 1 589 3 36 3,732 533 36 1 61 is 1 61 is --- --- 0 00 --- --- --- --- --- 1 606 3 43 3,826 533.43 1 65 is 1 63 is --- --- 0 00 --- --- --- --- --- 1 625 3 50 3,920 533 50 1 65 is 1 64 is --- --- 0 00 --- --- --- --- --- 1 644 3 57 4,013 533 57 1 66 is 1 66 is --- --- 0 00 --- --- --- --- --- 1 661 3 64 4,107 533 64 1 71 is 1 68 is --- --- 0 00 --- --- --- --- --- 1 679 3 71 4,201 533 71 1 71 is 1 70 is --- --- 0 00 --- --- --- --- --- 1.697 3 78 4,295 533 78 1 72 is 1 72 is --- --- 0 00 --- --- --- --- --- 1 715 3 85 4,388 533 85 1 77 is 1 73 is --- --- 0 00 --- --- --- --- --- 1 731 3 92 4,482 533 92 1 77 is 1 75 is --- --- 0 00 --- --- --- --- --- 1 749 3 99 4,576 533 99 1 77 is 1 77 is --- --- 0 00 --- --- --- --- --- 1 767 4 06 4,670 534 06 1 78 is 1 78 is --- --- 0 00 --- --- --- --- --- 1 783 4 13 4,764 534 13 1 84 is 1 80 is --- --- 0 00 --- --- --- --- --- 1 799 4 20 4,857 534 20 1 84 is 1 82 is --- --- 0 00 --- --- --- --- --- 1 816 4 27 4,951 534 27 1 90 is 1 83 is --- --- 0 04 --- --- --- --- --- 1 868 4 34 5,045 534 34 2 23 is 1 83 is --- --- 0 36 --- --- --- --- --- 2 193 4 41 5,139 534 41 2 73 is 1 83 is --- --- 0 85 --- --- --- --- --- 2 682 4 48 5,233 534 48 3 33 is 1 82 is --- --- 1 47 --- --- --- --- --- 3 293 4 55 5,326 534 55 4 03 is 1 82 is --- --- 2 19 --- --- --- --- --- 4 005 4 62 5,420 534 62 4 80 is 1 81 is --- --- 3 00 --- --- --- --- --- 4.804 4 69 5,514 534 69 5 70 is 1 79 is --- --- 3 89 --- --- --- --- --- 5 680 4 76 5,608 534 76 6 62 ic 1 77 is --- --- 4 85 --- --- --- --- --- 6 624 4 83 5,701 534 83 7 61 oc 1 73 is --- --- 5 88 --- --- --- --- --- 7 611 4 90 5,795 534 90 8 67 oc 1 69 is --- --- 6 98 --- --- --- --- --- 8 673 4 97 5,889 534 97 9 77 ic 1 64 is --- --- 8 14 --- --- --- --- --- 9 775 5 04 5,983 535 04 10 92 is 1 57 is --- --- 9 35 --- --- --- --- --- 10 92 5 11 6,077 535 11 12 10 is 1 48 is --- --- 10 62 --- --- --- --- --- 12 10 5 18 6,170 535 18 13 31 lc 1 36 is --- --- 11 95 --- --- --- --- --- 13 31 5 25 6,264 535 25 14 55 is 1 22 is --- --- 13 32 --- --- --- --- --- 14 55 5 32 6,358 535 32 15 79 is 1 05 lc --- --- 14 75 --- --- --- --- --- 15 79 5 39 6,452 535 39 16 61 is 0 91 is --- --- 15 70 s --- --- --- --- --- 16 61 5 46 6,545 535 46 17 06 is 0 84 lc --- --- 16 22 s --- --- --- --- --- 17 06 5 53 6,639 535 53 17 43 lc 0 78 is --- --- 16 65 s --- --- --- --- --- 17 43 5 60 6,733 535.60 17.74 is 0 73 is --- --- 17 01 s --- --- --- --- --- 17 74 5 67 6,804 535 67 18 02 lc 0 69 is --- --- 17 33 s --- --- --- --- --- 18 02 5 74 6,874 535 74 18 28 ic 0 65 lc --- --- 17 63 s --- --- --- --- --- 18 28 5 81 6,945 535.81 18 51 lc 0 62 is --- --- 17 89 s --- --- --- --- --- 18 51 5 88 7,016 535 88 18 73 is 0 59 lc --- --- 18 14 s --- --- --- --- --- 18 73 5 95 7,087 535 95 18 93 ic 0 56 lc --- --- 18 37 s --- --- --- --- --- 18 93 6 02 7,157 536.02 19.12 lc 0 53 is --- --- 18 59 s --- --- --- --- --- 19 12 6 09 7,228 536 09 19 31 lc 0 51 is --- --- 18.80 s --- --- --- --- --- 19 30 6 16 7,299 536 16 19 48 lc 0 49 is --- --- 18 99 s --- --- --- --- --- 19 48 6 23 7,369 536 23 19 65 is 0 47 is --- --- 19 18 s --- --- --- --- --- 19.65 6 30 7,440 536 30 19 81 is 0 45 is --- --- 19 36 s --- --- --- --- --- 19 81 6 37 7,480 536 37 19 97 is 0 43 lc --- --- 19 54 s --- --- --- --- --- 19 97 6 44 7,520 536 44 20 12 ic 0 42 lc --- --- 19 70 s --- --- --- --- --- 20 12 6 51 7,560 536.51 20.27 is 0 40 is --- --- 19 87 s --- --- --- --- --- 20 27 6 58 7,600 536 58 20 42 is 0 39 is --- --- 20 03 s --- --- --- --- --- 20 42 6 65 7,640 536 65 20 56 lc 0 38 lc --- --- 20 18 s --- --- --- --- --- 20 56 6 72 7,679 536 72 20 70 is 0 36 is --- --- 20 34 s --- --- --- --- --- 20 70 6 79 7,719 536 79 20 84 is 0 35 is --- --- 20 49 s --- --- --- --- --- 20 84 6 86 7,759 536 86 20 98 ic 0 34 is --- --- 20 63 s --- --- --- --- --- 20 98 6 93 7,799 536.93 21 11 lc 0 33 is --- --- 20 78 s --- --- --- --- --- 21 11 7 00 7,839 537 00 21 24 is 0 32 is --- --- 20 92 s --- --- --- --- --- 21 24 End 57 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk®Civil 3D®2019 by Autodesk. Inc v2019 2 Friday, 11 /20/2020 Hyd. No. 12 POA-1 Hydrograph type = Combine Peak discharge = 15.28 cfs Storm frequency = 10 yrs Time to peak = 12.00 hrs Time interval = 1 min Hyd. volume = 38,100 cuft Inflow hyds. = 6, 8, 11 Contrib. drain. area = 0.440 ac POA-1 Q (cfs) Hyd No 12-- 10 Year Q (cfs) 18 00 18 00 15 00 15 00 12 00 12 00 9.00 9 00 6 00 6 00 3 00 3 00 0 00 - — 0 00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No 12 Hyd No 6 Hyd No 8 Hyd No 11 APPENDIX A: USDA SOILS REPORT USDA United States A product of the National Custom Soil Resource Department of Cooperative Soil Survey, Agriculture a joint effort of the United Report for N RCS States Department of Agriculture and other A I be m a rl e Federal agencies, State Natural agencies including the Resources Agricultural Experiment County, Vi rg i n i a Conservation Stations, and local Service participants Airport Road Sheetz irii 4 41146 tk % -.. ... ti ° /it .. 14,41. , •At - `I . , ' 1i•s ♦ w 0. ` t - * 1t .. .1 irl4 • /7/1:‘ �f N•z,N., ilia 4.‘;!r •• Ai- ''' -' -'.. 11111 • Ao •s A • , y ■■ il b ! 0■ ..■m■■■100 ftIS. 411 /7 May 20, 2020 Preface Soil surveys contain information that affects land use planning in survey areas They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http.//www.nres.usda.gov/wps/ portal/nrcs/main/soils/health/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (https.//offices.sc.egov.usda.gov/locator/app7agency=nres) or your NRCS State Soil Scientist(http.//www.nres.usda.gov/wps/portal/nres/detail/soils/contactus/9 cid=nres142p2_053951) Great differences in soil properties can occur within short distances Some soils are seasonally wet or subject to flooding Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey, the site for official soil survey information. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require 2 alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at(202) 720-2600 (voice and TDD) To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S W, Washington, D C 20250-9410 or call (800) 795-3272 (voice) or(202) 720-6382 (TDD) USDA is an equal opportunity provider and employer 3 Contents Preface 2 How Soil Surveys Are Made 5 Soil Map 8 Soil Map 9 Legend 10 Map Unit Legend 11 Map Unit Descriptions... . .. ... . . . 11 Albemarle County, Virginia 13 21 B—Culpeper fine sandy loam, 2 to 7 percent slopes 13 27B—Elioak loam, 2 to 7 percent slopes ..... . . . . . . . . . ... . .. 14 88—Udorthents, loamy, 2 to 25 percent slopes. 15 Soil Information for All Uses 16 Soil Properties and Qualities 16 Soil Qualities and Features .16 Hydrologic Soil Group (Airport Road Sheetz) 16 References 21 4 How Soil Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area. They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses. Soil scientists observed the steepness, length, and shape of the slopes, the general pattern of drainage; the kinds of crops and native plants; and the kinds of bedrock They observed and described many soil profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity Currently, soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate, water resources, soils, biological resources, and land uses (USDA, 2006). Soil survey areas typically consist of parts of one or more MLRA. The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform, a soil scientist develops a concept, or model, of how they were formed. Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape. Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils. They can observe only a limited number of soil profiles. Nevertheless, these observations, supplemented by an understanding of the soil-vegetation-landscape relationship, are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries. Soil scientists recorded the characteristics of the soil profiles that they studied They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils. After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes (units). Taxonomic classes are concepts Each taxonomic class has a set of soil characteristics with precisely defined limits. The classes are used as a basis for comparison to classify soils systematically Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile. After the soil 5 Custom Soil Resource Report scientists classified and named the soils in the survey area, they compared the individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research. The objective of soil mapping is not to delineate pure map unit components, the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions. Some components may be highly contrasting to the other components of the map unit. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas. Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units, complexity of the landscape, and experience of the soil scientist Observations are made to test and refine the soil-landscape model and predictions and to verify the classification of the soils at specific locations. Once the soil-landscape model is refined, a significantly smaller number of measurements of individual soil properties are made and recorded These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand, silt, clay, salt, and other components Properties of each soil typically vary from one point to another across the landscape. Observations for map unit components are aggregated to develop ranges of characteristics for the components. The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit component. Values for some properties are estimated from combinations of other properties. While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests. Soil scientists interpret the data from these analyses and tests as well as the field-observed characteristics and the soil properties to determine the expected behavior of the soils under different uses. Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists. For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date. After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and 6 Custom Soil Resource Report identified each as a specific map unit Aerial photographs show trees, buildings, fields, roads, and rivers, all of which help in locating boundaries accurately. 7 Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit 8 Custom Soil Resource Report Soil Map k . � ::. 72.•a 724700 72.720 724740 24,47 724780 724 724820 72^:,a 38°8'1"N - 38°8'1'N 1111, t . A' • II 1 •iir VP 21B , aiiii �► e 41 � di ,,• --_ __ _ �„� i'1t� _ I, Ile , . • � F ill 16 /1111 +� /5 � - ' / 1 Al 0, Ilic t * ` h VV _i o s i NitilliSizse '14. l'...:N.,-•,,, .. J / (s- /i if 9' i,. o' tfffQ if `.mob ' , h ! «««'' r � ',Jilt. of F Soil Mao 7KnlOOttf dEOBC7�4Canbwi� `F M t 38°T56'N _ 1 38°7 56"N 724680 724680 724700 724720 724740 724762 -24-82 724800 724820 724840 3 3 v N Map Scale:1:940 if punted on A landscape(11"x 8.5")sheet. 0 Meters N 0 10 20 40 6o Feet A 0 45 90 180 270 Map projection:Web Mercator Comer coordinates WGS84 Edge tics:UThI Zone 17N WGS84 9 Custom Soil Resource Report MAP LEGEND MAP INFORMATION Area of Interest(AOI) Spoil Area The soil surveys that comprise your AOI were mapped at Area of Interest(AOI) StonySpot 1 15,800 Q Soils Very Stony Spot Soil Map Unit Polygons Warning Soil Map may not be valid at this scale. ,.., Wet Spot ~e Soil Map Unit Lines Enlargement of maps beyond the scale of mapping can cause t:] Other misunderstandingof the detail of mapping and accuracyof soil • Soil Map Unit Points PP 9 .� Special Line Features line placement.The maps do not show the small areas of Special Point Features contrasting soils that could have been shown at a more detailed V Blowout Water Features scale. Streams and Canals 031 Borrow Pit Transportation Please rely on the bar scale on each map sheet for map x Clay Spot i-i-+ Rails measurements. Closed Depression oiwI Interstate Highways Source of Map Natural Resources Conservation Service Gravel Pit US Routes Web Soil Survey URL Gravelly Spot Major Roads Coordinate System Web Mercator(EPSG 3857) O Landfill Local Roads Maps from the Web Soil Survey are based on the Web Mercator A. Lava Flow Background projection,which preserves direction and shape but distorts distance and area.A projection that preserves area,such as the 4 Marsh or swamp . Aerial Photography Albers equal-area conic projection, should be used if more It Mine or Quarry accurate calculations of distance or area are required. o Miscellaneous Water This product is generated from the USDA-NRCS certified data as 0 Perennial Water of the version date(s)listed below v Rock Outcrop Soil Survey Area Albemarle County,Virginia 4. Saline Spot Survey Area Data Version 13,Sep 17,2019 •• : Sandy Spot Soil map units are labeled(as space allows)for map scales Severely Eroded Spot 1 50,000 or larger. • Sinkhole Date(s)aerial images were photographed May 20,2019—Aug 0 Slide or Slip 1,2019 oe Sodic Spot The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps As a result, some minor shifting of map unit boundaries may be evident 10 Custom Soil Resource Report Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 21 B Culpeper fine sandy loam,2 to 0 2 6 8% 7 percent slopes 27B Elioak loam,2 to 7 percent 1.3 57 3% slopes 88 Udorthents,loamy,2 to 25 0 8 35 8% percent slopes Totals for Area of Interest 2.3 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or 11 Custom Soil Resource Report landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series Some map units are made up of two or more major soils or miscellaneous areas These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha-Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. 12 Custom Soil Resource Report Albemarle County, Virginia 21B—Culpeper fine sandy loam, 2 to 7 percent slopes Map Unit Setting National map unit symbol. kb8k Mean annual precipitation. 25 to 65 inches Mean annual air temperature. 54 to 59 degrees F Frost-free period. 195 to 231 days Farmland classification All areas are prime farmland Map Unit Composition Culpeper and similar soils 80 percent Estimates are based on observations, descriptions, and transects of the mapunit Description of Culpeper Setting Landform. Hillslopes Landform position (two-dimensional). Summit Landform position (three-dimensional). Interfluve Down-slope shape. Convex Across-slope shape. Convex Parent material: Residuum weathered from meta-arkosic sandstone and quartzite Typical profile HI - 0 to 8 inches. fine sandy loam H2- 8 to 30 inches. clay H3-30 to 37 inches. sandy clay loam H4 -37 to 45 inches fine sandy loam H5- 45 to 50 inches bedrock H6- 50 to 79 inches bedrock Properties and qualities Slope 2 to 7 percent Depth to restrictive feature: 40 to 79 inches to lithic bedrock; 40 to 79 inches to paralithic bedrock Natural drainage class Well drained Runoff class Medium Capacity of the most limiting layer to transmit water(Ksat). Very low to high (0.00 to 1.98 in/hr) Depth to water table More than 80 inches Frequency of flooding. None Frequency of ponding. None Available water storage in profile Moderate (about 6.6 inches) Interpretive groups Land capability classification (irrigated). None specified Land capability classification (nonirngated)• 2e Hydrologic Soil Group B Hydnc soil rating. No 13 Custom Soil Resource Report 27B—Elioak loam, 2 to 7 percent slopes Map Unit Setting National map unit symbol kb8y Mean annual precipitation 25 to 65 inches Mean annual air temperature. 54 to 59 degrees F Frost-free penod 195 to 231 days Farmland classification All areas are prime farmland Map Unit Composition Elioak and similar soils. 80 percent Estimates are based on observations, descriptions, and transects of the mapunit Description of Elioak Setting Landform Hillslopes Landform position (two-dimensional). Summit Landform position (three-dimensional). Interfluve Down-slope shape Convex Across-slope shape Convex Parent material Residuum weathered from mica schist Typical profile H1 - 0 to 8 inches loam H2- 8 to 39 inches silty clay H3- 39 to 79 inches silt loam Properties and qualities Slope 2 to 7 percent Depth to restrictive feature. More than 80 inches Natural drainage class Well drained Runoff class Medium Capacity of the most limiting layer to transmit water(Ksat) Moderately high to high (0.20 to 1.98 in/hr) Depth to water table More than 80 inches Frequency of flooding. None Frequency of ponding• None Available water storage in profile Moderate (about 6.6 inches) Interpretive groups Land capability classification (irrigated) None specified Land capability classification (nonirngated). 2e Hydrologic Soil Group- B Hydnc soil rating No 14 Custom Soil Resource Report 88—Udorthents, loamy, 2 to 25 percent slopes Map Unit Setting National map unit symbol 2xxz3 Elevation 360 to 1,540 feet Mean annual precipitation 25 to 65 inches Mean annual air temperature 54 to 59 degrees F Frost-free period. 195 to 231 days Farmland classification Not prime farmland Map Unit Composition Udorthents and similar soils. 85 percent Minor components- 5 percent Estimates are based on observations, descriptions, and transects of the mapunit Description of Udorthents Setting Landform Interfluves Landform position (two-dimensional) Summit Landform position (three-dimensional) Interfluve Down-slope shape Convex Across-slope shape Convex Parent material Residuum weathered from granite and gneiss Properties and qualities Slope 2 to 25 percent Depth to restrictive feature. More than 80 inches Depth to water table. More than 80 inches Frequency of flooding. None Frequency of ponding None Minor Components Hatboro, occasionally flooded Percent of map unit. 5 percent Landform Flood plains Down-slope shape. Linear Across-slope shape. Linear Hydnc soil rating Yes 15 Soil Information for All Uses Soil Properties and Qualities The Soil Properties and Qualities section includes various soil properties and qualities displayed as thematic maps with a summary table for the soil map units in the selected area of interest A single value or rating for each map unit is generated by aggregating the interpretive ratings of individual map unit components This aggregation process is defined for each property or quality. Soil Qualities and Features Soil qualities are behavior and performance attributes that are not directly measured, but are inferred from observations of dynamic conditions and from soil properties. Example soil qualities include natural drainage, and frost action Soil features are attributes that are not directly part of the soil. Example soil features include slope and depth to restrictive layer These features can greatly impact the use and management of the soil Hydrologic Soil Group (Airport Road Sheetz) Hydrologic soil groups are based on estimates of runoff potential Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms The soils in the United States are assigned to four groups (A, B, C, and D) and three 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 thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. 16 Custom Soil Resource Report Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at 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 (ND, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. 17 Custom Soil Resource Report Map—Hydrologic Soil Group (Airport Road Sheetz) 72•••, 72•;;' 72•;:a 72.7W0 724720 724740 724760 7247E0 724820 724820 724840 38°8'1"N & • , l 38"Er1"N ill % a , •ram, � s i II 1 a k., * 4 * µ j 1 I b ''''j. 4 ' ( li A* • t Mr Ailk . . . 1 I k i N0,4410i , *el' 1 IL I** ._. i �. '‘\ Notit IIIMIKIL o F if F Soil Map fiETi9 MORN; �8C1 F]4�8P N. r r 38°7 56 N • Y 38-7 56 N 724660 724680 724700 724720 724740 7247E0 724787 724 724820 724840 3 Map Scale.1.940 if pnnted on A landscape(11"x 8 5")sheet. N Meters N 0 10 20 40 eo Feet 0 4s so 180 z7o AMap projection.Web Mer�tor Comer coordinates WGS84 Edge tics.UTM Zone 17N WC�S84 18 Custom Soil Resource Report MAP LEGEND MAP INFORMATION Area of Interest(A01) ■ C The soil surveys that comprise your AOI were mapped at U Area of Interest(AOI) ■ C/D 1 15,800 Soils D Soil Rating Polygons • Warning Soil Map may not be valid at this scale Li A o Not rated or not available Enlargement of maps beyond the scale of mapping can cause 0 A/D Water Features misunderstanding of the detail of mapping and accuracy of soil Streams and Canals line placement The maps do not show the small areas of • B contrastingsoils that could have been shown at a more detailed Transportation BID 4-4-4 Rails scale C ti Interstate Highways Please rely on the bar scale on each map sheet for map C/D US Routes measurements 0 D Major Roads Source of Map Natural Resources Conservation Service 0 Not rated or not available Local Roads Web Soil Survey URL Soil Rating Lines Background Coordinate System Web Mercator(EPSG 3857) so A III Aerial Photography Maps from the Web Soil Survey are based on the Web Mercator A/D projection,which preserves direction and shape but distorts g distance and area A projection that preserves area,such as the Albers equal-area conic projection,should be used if more ,y BID accurate calculations of distance or area are required N C This product is generated from the USDA-NRCS certified data as .,� C/D of the version date(s)listed below. ti D Soil Survey Area Albemarle County,Virginia . r Not rated or not available Survey Area Data Version 13,Sep 17,2019 Soil Rating Points • A Soil map units are labeled(as space allows)for map scales 1 50,000 or larger • A/D • B Date(s)aerial images were photographed May 20,2019—Aug 1,2019 ■ B/D The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps As a result, some minor shifting of map unit boundaries may be evident 19 Custom Soil Resource Report Table—Hydrologic Soil Group (Airport Road Sheetz) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 21B Culpeper fine sandy B 0-2 6 8% loam,2 to 7 percent slopes 27B El[oak loam,2 to 7 B 1 3 57 3% percent slopes 88 Udorthents,loamy,2 to 0 8 35 8 25 percent slopes Totals for Area of Interest 2.3 100.0% Rating Options—Hydrologic Soil Group (Airport Road Sheetz) Aggregation Method: Dominant Condition Component Percent Cutoff None Specified Tie-break Rule Higher 20 References American Association of State Highway and Transportation Officials (AASHTO). 2004 Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes ASTM Standard D2487-00. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service FWS/OBS-79/31. Federal Register July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006 Field indicators of hydric soils in the United States. National Research Council 1995 Wetlands. Characteristics and boundaries. Soil Survey Division Staff. 1993. Soil survey manual Soil Conservation Service. U.S. Department of Agriculture Handbook 18 http://www.nres.usda.gov/wps/portal/ nres/detail/national/soils/?cid=nres142p2_054262 Soil Survey Staff. 1999. Soil taxonomy. A basic system of soil classification for making and interpreting soil surveys 2nd edition. Natural Resources Conservation Service, U.S. Department of Agriculture Handbook 436. http.// www.nres.usda.gov/wps/portal/nres/detail/national/soils/7cid=nres 142p2_053577 Soil Survey Staff. 2010. Keys to soil taxonomy 11th edition U S Department of Agriculture, Natural Resources Conservation Service http:// www.nres.usda.gov/wps/portal/nres/detail/national/soils/acid=nres142p2_053580 Tiner, R.W., Jr. 1985. Wetlands of Delaware U S Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y-87-1. United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http://www.nres.usda.gov/wps/portal/nres/detail/soils/ home/?cid=nres142p2_053374 United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.nres.usda.gov/wps/portal/nres/ detail/national/landuse/rangepasture/7cid=stelprdb1043084 21 Custom Soil Resource Report United States Department of Agriculture, Natural Resources Conservation Service National soil survey handbook, title 430-VI http//www nrcs.usda.gov/wps/portal/ nres/detail/soils/scientists/?cid=nres142p2_054242 United States Department of Agriculture, Natural Resources Conservation Service. 2006 Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296 http//www.nres.usda.gov/wps/portal/nres/detail/national/soils/? cid=nres142p2_053624 United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. http.// www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf 22