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HomeMy WebLinkAboutSP-23-004 - Supplemental - 1200 Airport Drive (3)Sc 1A Existing to CB3 Sc 1B Existing to CB 4 Sc 1C Post SN-1 Sc 1D Post SN-1 Sc 2A Post SN-2 Sc 2B Post SN-2 Sc 3 EG Outside 3 Sc 4 Towards HTA RON 1CB CB1 1A P Proposed Infiltration 2CB CB2 2P Existing Infiltration3CB CB3 3P Existing Infiltration 4CB CB4 5CB CB5 IR CB6 SN 1 SN 1 SN 2 SN 2 SN 3 HTA's Permit Routing Diagram for POST-Development - FinalPrepared by {enter your company name here}, Printed 3/22/2022 HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 2HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Rainfall Events Listing Event# Event Name Storm Type Curve Mode Duration (hours) B/B Depth (inches) AMC 1 1-Year NRCC 24-hr A Default 24.00 1 1.90 2 2 2-Year NRCC 24-hr A Default 24.00 1 2.24 2 3 5-Year NRCC 24-hr A Default 24.00 1 2.80 2 4 10-Year NRCC 24-hr A Default 24.00 1 3.26 2 5 25-Year NRCC 24-hr A Default 24.00 1 3.89 2 6 50-Year NRCC 24-hr A Default 24.00 1 4.37 2 7 100-Year NRCC 24-hr A Default 24.00 1 4.87 2 POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 3HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres) CN Description (subcatchment-numbers) 2.424 39 >75% Grass cover, Good, HSG A (Sc 1A, Sc 1B, Sc 1C, Sc 1D, Sc 2B) 2.275 39 Pasture/Grassland/Range, Good HSG A (Sc 2A) 7.488 98 Paved parking, HSG A (Sc 1B, Sc 1C, Sc 1D, Sc 2A, Sc 2B, Sc 4) 0.168 98 Water Surface, HSG A (Sc 1A) 12.355 76 TOTAL AREA POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 4HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers 12.355 HSG A Sc 1A, Sc 1B, Sc 1C, Sc 1D, Sc 2A, Sc 2B, Sc 4 0.000 HSG B 0.000 HSG C 0.000 HSG D 0.000 Other 12.355 TOTAL AREA POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 5HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Ground Covers (all nodes) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 2.424 0.000 0.000 0.000 0.000 2.424 >75% Grass cover, Good S c 1 A , S c 1 B , S c 1 C , S c 1 D , S c 2 B 2.275 0.000 0.000 0.000 0.000 2.275 Pasture/Grassland/Range, Good S c 2 A 7.488 0.000 0.000 0.000 0.000 7.488 Paved parking S c 1 B , S c 1 C , S c 1 D , S c 2 POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 6HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.168 0.000 0.000 0.000 0.000 0.168 Water Surface S c 1 A 12.355 0.000 0.000 0.000 0.000 12.355 TOTAL AREA POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 7HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pipe Listing (all nodes) Line# Node Number In-Invert (feet) Out-Invert (feet) Length (feet) Slope (ft/ft) n Width (inches) Diam/Height (inches) Inside-Fill (inches) 1 1 324.60 323.20 297.2 0.0047 0.012 0.0 18.0 0.0 2 2 323.10 321.80 305.2 0.0043 0.012 0.0 18.0 0.0 3 2P 322.98 322.15 75.0 0.0111 0.012 0.0 24.0 0.0 4 3 321.70 321.00 228.0 0.0031 0.012 0.0 36.0 0.0 5 3P 323.20 323.10 18.0 0.0056 0.012 0.0 15.0 0.0 6 4 322.20 321.80 47.0 0.0085 0.012 0.0 15.0 0.0 7 5 324.88 324.70 37.0 0.0049 0.012 0.0 12.0 0.0 NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 8HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Time span=1.00-72.00 hrs, dt=0.05 hrs, 1421 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=0.198 ac 84.85% Impervious Runoff Depth=0.95"Subcatchment Sc 1A: Existing to CB3 Flow Length=156' Tc=2.4 min CN=89 Runoff=0.33 cfs 0.016 af Runoff Area=1.888 ac 64.35% Impervious Runoff Depth=0.40"Subcatchment Sc 1B: Existing to CB 4 Flow Length=269' Tc=4.6 min CN=77 Runoff=1.05 cfs 0.062 af Runoff Area=2.986 ac 66.68% Impervious Runoff Depth=0.43"Subcatchment Sc 1C: Post SN-1 Flow Length=404' Tc=9.4 min CN=78 Runoff=1.52 cfs 0.107 af Runoff Area=1.843 ac 73.09% Impervious Runoff Depth=0.58"Subcatchment Sc 1D: Post SN-1 Flow Length=398' Tc=8.3 min CN=82 Runoff=1.46 cfs 0.090 af Runoff Area=4.123 ac 44.82% Impervious Runoff Depth=0.11"Subcatchment Sc 2A: Post SN-2 Flow Length=342' Tc=44.5 min CN=65 Runoff=0.12 cfs 0.037 af Runoff Area=0.812 ac 71.67% Impervious Runoff Depth=0.54"Subcatchment Sc 2B: Post SN-2 Flow Length=219' Tc=4.3 min CN=81 Runoff=0.68 cfs 0.037 af Subcatchment Sc 3: EG Outside 3 Runoff=0.00 cfs 0.000 af Runoff Area=21,977 sf 100.00% Impervious Runoff Depth=1.68"Subcatchment Sc 4: Towards HTA RON Flow Length=134' Slope=0.0024 '/' Tc=4.3 min CN=98 Runoff=1.21 cfs 0.070 af Peak Elev=325.22' Inflow=1.46 cfs 0.090 afPond 1: CB1 18.0" Round Culvert n=0.012 L=297.2' S=0.0047 '/' Outflow=1.46 cfs 0.090 af Peak Elev=324.20' Storage=276 cf Inflow=1.44 cfs 0.059 afPond 1A P: Proposed Infiltration Discarded=0.96 cfs 0.059 af Secondary=0.00 cfs 0.000 af Outflow=0.96 cfs 0.059 af Peak Elev=323.72' Inflow=1.46 cfs 0.090 afPond 2: CB2 18.0" Round Culvert n=0.012 L=305.2' S=0.0043 '/' Outflow=1.46 cfs 0.090 af Peak Elev=319.80' Storage=0.000 af Inflow=0.12 cfs 0.037 afPond 2P: Existing Infiltration Discarded=0.12 cfs 0.037 af Secondary=0.00 cfs 0.000 af Outflow=0.12 cfs 0.037 af Peak Elev=322.42' Inflow=2.64 cfs 0.167 afPond 3: CB3 36.0" Round Culvert n=0.012 L=228.0' S=0.0031 '/' Outflow=2.64 cfs 0.167 af Peak Elev=321.10' Storage=0.000 af Inflow=0.00 cfs 0.000 afPond 3P: Existing Infiltration 15.0" Round Culvert n=0.012 L=18.0' S=0.0056 '/' Outflow=0.00 cfs 0.000 af Peak Elev=322.76' Inflow=1.05 cfs 0.062 afPond 4: CB4 15.0" Round Culvert n=0.012 L=47.0' S=0.0085 '/' Outflow=1.05 cfs 0.062 af Peak Elev=325.68' Inflow=1.46 cfs 0.090 afPond 5: CB5 12.0" Round Culvert n=0.012 L=37.0' S=0.0049 '/' Outflow=1.46 cfs 0.090 af NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 9HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Peak Elev=326.60' Storage=0.005 af Inflow=1.52 cfs 0.107 afPond IR: CB6 Discarded=0.06 cfs 0.048 af Primary=1.44 cfs 0.059 af Outflow=1.49 cfs 0.107 af Inflow=2.64 cfs 0.167 afLink SN 1: SN 1 Primary=2.64 cfs 0.167 af Inflow=0.68 cfs 0.037 afLink SN 2: SN 2 Primary=0.68 cfs 0.037 af Inflow=1.21 cfs 0.070 afLink SN 3: HTA's Permit Primary=1.21 cfs 0.070 af Total Runoff Area = 12.355 ac Runoff Volume = 0.419 af Average Runoff Depth = 0.41" 38.03% Pervious = 4.699 ac 61.97% Impervious = 7.656 ac NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 10HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1A: Existing to CB3 Runoff = 0.33 cfs @ 12.09 hrs, Volume= 0.016 af, Depth= 0.95" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 1-Year Rainfall=1.90" Area (ac) CN Description 0.030 39 >75% Grass cover, Good, HSG A 0.168 98 Water Surface, HSG A 0.198 89 Weighted Average 0.030 15.15% Pervious Area 0.168 84.85% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.0 123 0.0127 1.00 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.4 33 0.0485 1.54 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 2.4 156 Total Subcatchment Sc 1A: Existing to CB3 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 NRCC 24-hr A 1-Year Rainfall=1.90" Runoff Area=0.198 ac Runoff Volume=0.016 af Runoff Depth=0.95" Flow Length=156' Tc=2.4 min CN=89 0.33 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 11HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1B: Existing to CB 4 Runoff = 1.05 cfs @ 12.13 hrs, Volume= 0.062 af, Depth= 0.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 1-Year Rainfall=1.90" Area (ac) CN Description 0.673 39 >75% Grass cover, Good, HSG A 1.215 98 Paved parking, HSG A 1.888 77 Weighted Average 0.673 35.65% Pervious Area 1.215 64.35% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.3 66 0.0105 0.82 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 3.3 203 0.0212 1.02 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 4.6 269 Total Subcatchment Sc 1B: Existing to CB 4 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 1-Year Rainfall=1.90" Runoff Area=1.888 ac Runoff Volume=0.062 af Runoff Depth=0.40" Flow Length=269' Tc=4.6 min CN=77 1.05 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 12HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1C: Post SN-1 Runoff = 1.52 cfs @ 12.19 hrs, Volume= 0.107 af, Depth= 0.43" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 1-Year Rainfall=1.90" Area (ac) CN Description 0.995 39 >75% Grass cover, Good, HSG A 1.991 98 Paved parking, HSG A 2.986 78 Weighted Average 0.995 33.32% Pervious Area 1.991 66.68% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 219 0.0054 0.80 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.3 24 0.0046 1.38 Shallow Concentrated Flow, B-C Paved Kv= 20.3 fps 4.5 161 0.0074 0.60 Shallow Concentrated Flow, C-D Short Grass Pasture Kv= 7.0 fps 9.4 404 Total Subcatchment Sc 1C: Post SN-1 Runoff Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 1-Year Rainfall=1.90" Runoff Area=2.986 ac Runoff Volume=0.107 af Runoff Depth=0.43" Flow Length=404' Tc=9.4 min CN=78 1.52 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 13HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1D: Post SN-1 Runoff = 1.46 cfs @ 12.16 hrs, Volume= 0.090 af, Depth= 0.58" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 1-Year Rainfall=1.90" Area (ac) CN Description 0.496 39 >75% Grass cover, Good, HSG A 1.347 98 Paved parking, HSG A 1.843 82 Weighted Average 0.496 26.91% Pervious Area 1.347 73.09% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 226 0.0055 0.81 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.2 23 0.0109 2.12 Shallow Concentrated Flow, B-C Paved Kv= 20.3 fps 3.5 149 0.0104 0.71 Shallow Concentrated Flow, C-D Short Grass Pasture Kv= 7.0 fps 8.3 398 Total Subcatchment Sc 1D: Post SN-1 Runoff Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 1-Year Rainfall=1.90" Runoff Area=1.843 ac Runoff Volume=0.090 af Runoff Depth=0.58" Flow Length=398' Tc=8.3 min CN=82 1.46 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 14HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 2A: Post SN-2 Runoff = 0.12 cfs @ 13.07 hrs, Volume= 0.037 af, Depth= 0.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 1-Year Rainfall=1.90" Area (ac) CN Description * 2.275 39 Pasture/Grassland/Range, Good HSG A 1.848 98 Paved parking, HSG A 4.123 65 Weighted Average 2.275 55.18% Pervious Area 1.848 44.82% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 27.5 94 0.0156 0.06 Sheet Flow, A-B Grass: Bermuda n= 0.410 P2= 2.25" 17.0 248 0.0012 0.24 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 44.5 342 Total Subcatchment Sc 2A: Post SN-2 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)0.135 0.13 0.125 0.12 0.115 0.11 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 NRCC 24-hr A 1-Year Rainfall=1.90" Runoff Area=4.123 ac Runoff Volume=0.037 af Runoff Depth=0.11" Flow Length=342' Tc=44.5 min CN=65 0.12 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 15HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 2B: Post SN-2 Runoff = 0.68 cfs @ 12.11 hrs, Volume= 0.037 af, Depth= 0.54" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 1-Year Rainfall=1.90" Area (ac) CN Description 0.230 39 >75% Grass cover, Good, HSG A 0.582 98 Paved parking, HSG A 0.812 81 Weighted Average 0.230 28.33% Pervious Area 0.582 71.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.8 46 0.0165 0.91 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 3.5 173 0.0142 0.83 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 4.3 219 Total Subcatchment Sc 2B: Post SN-2 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 NRCC 24-hr A 1-Year Rainfall=1.90" Runoff Area=0.812 ac Runoff Volume=0.037 af Runoff Depth=0.54" Flow Length=219' Tc=4.3 min CN=81 0.68 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 16HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 3: EG Outside 3 Runoff = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 1-Year Rainfall=1.90" Subcatchment Sc 3: EG Outside 3 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 1-Year Rainfall=1.90" 0.00 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 17HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 4: Towards HTA RON Runoff = 1.21 cfs @ 12.10 hrs, Volume= 0.070 af, Depth= 1.68" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 1-Year Rainfall=1.90" Area (sf) CN Description 0 39 >75% Grass cover, Good, HSG A 21,977 98 Paved parking, HSG A 21,977 98 Weighted Average 21,977 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.3 134 0.0024 0.52 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" Subcatchment Sc 4: Towards HTA RON Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 1-Year Rainfall=1.90" Runoff Area=21,977 sf Runoff Volume=0.070 af Runoff Depth=1.68" Flow Length=134' Slope=0.0024 '/' Tc=4.3 min CN=98 1.21 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 18HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1: CB1 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 0.58" for 1-Year event Inflow = 1.46 cfs @ 12.16 hrs, Volume= 0.090 af Outflow = 1.46 cfs @ 12.16 hrs, Volume= 0.090 af, Atten= 0%, Lag= 0.0 min Primary = 1.46 cfs @ 12.16 hrs, Volume= 0.090 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 325.22' @ 12.16 hrs Flood Elev= 329.76' Device Routing Invert Outlet Devices #1 Primary 324.60'18.0" Round RCP_Round 18" L= 297.2' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 324.60' / 323.20' S= 0.0047 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf Primary OutFlow Max=1.41 cfs @ 12.16 hrs HW=325.21' (Free Discharge) 1=RCP_Round 18" (Inlet Controls 1.41 cfs @ 2.10 fps) Pond 1: CB1 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Inflow Area=1.843 ac Peak Elev=325.22' 18.0" Round Culvert n=0.012 L=297.2' S=0.0047 '/' 1.46 cfs1.46 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 19HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1A P: Proposed Infiltration Inflow Area = 2.986 ac, 66.68% Impervious, Inflow Depth = 0.24" for 1-Year event Inflow = 1.44 cfs @ 12.18 hrs, Volume= 0.059 af Outflow = 0.96 cfs @ 12.15 hrs, Volume= 0.059 af, Atten= 33%, Lag= 0.0 min Discarded = 0.96 cfs @ 12.15 hrs, Volume= 0.059 af Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 324.20' @ 12.30 hrs Surf.Area= 3,016 sf Storage= 276 cf Plug-Flow detention time= 2.3 min calculated for 0.059 af (100% of inflow) Center-of-Mass det. time= 2.3 min ( 764.8 - 762.5 ) Volume Invert Avail.Storage Storage Description #1A 323.97' 2,125 cf 44.83'W x 67.28'L x 2.33'H Field A 7,038 cf Overall - 1,725 cf Embedded = 5,313 cf x 40.0% Voids #2A 324.47' 1,725 cf ADS_StormTech SC-310 +Cap x 117 Inside #1 Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap 117 Chambers in 13 Rows #3 324.47' 57 cf 4.00'D x 4.50'H Vertical Cone/Cylinder #4 328.90' 1,666 cf Custom Stage Data (Prismatic) Listed below (Recalc) 5,572 cf Total Available Storage Storage Group A created with Chamber Wizard Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 328.90 74 0 0 329.00 321 20 20 329.10 764 54 74 329.50 7,194 1,592 1,666 Device Routing Invert Outlet Devices #1 Discarded 323.97'13.730 in/hr Exfiltration over Horizontal area #2 Secondary 329.15'9.7" x 2.0" Horiz. Orifice/Grate X 2.00 columns X 10 rows C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.96 cfs @ 12.15 hrs HW=324.06' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.96 cfs) Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=323.97' (Free Discharge) 2=Orifice/Grate ( Controls 0.00 cfs) NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 20HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 1A P: Proposed Infiltration - Chamber Wizard Field A Chamber Model = ADS_StormTech SC-310 +Cap (ADS StormTech® SC-310 with cap length) Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap 34.0" Wide + 6.0" Spacing = 40.0" C-C Row Spacing 9 Chambers/Row x 7.12' Long +0.60' Cap Length x 2 = 65.28' Row Length +12.0" End Stone x 2 = 67.28' Base Length 13 Rows x 34.0" Wide + 6.0" Spacing x 12 + 12.0" Side Stone x 2 = 44.83' Base Width 6.0" Stone Base + 16.0" Chamber Height + 6.0" Stone Cover = 2.33' Field Height 117 Chambers x 14.7 cf = 1,724.8 cf Chamber Storage 7,038.2 cf Field - 1,724.8 cf Chambers = 5,313.4 cf Stone x 40.0% Voids = 2,125.4 cf Stone Storage Chamber Storage + Stone Storage = 3,850.2 cf = 0.088 af Overall Storage Efficiency = 54.7% Overall System Size = 67.28' x 44.83' x 2.33' 117 Chambers 260.7 cy Field 196.8 cy Stone NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 21HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 1A P: Proposed Infiltration Inflow Outflow Discarded Secondary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Inflow Area=2.986 ac Peak Elev=324.20' Storage=276 cf 1.44 cfs 0.96 cfs0.96 cfs 0.00 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 22HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2: CB2 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 0.58" for 1-Year event Inflow = 1.46 cfs @ 12.16 hrs, Volume= 0.090 af Outflow = 1.46 cfs @ 12.16 hrs, Volume= 0.090 af, Atten= 0%, Lag= 0.0 min Primary = 1.46 cfs @ 12.16 hrs, Volume= 0.090 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 323.72' @ 12.16 hrs Flood Elev= 331.03' Device Routing Invert Outlet Devices #1 Primary 323.10'18.0" Round RCP_Round 18" L= 305.2' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 323.10' / 321.80' S= 0.0043 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf Primary OutFlow Max=1.41 cfs @ 12.16 hrs HW=323.71' (Free Discharge) 1=RCP_Round 18" (Inlet Controls 1.41 cfs @ 2.10 fps) Pond 2: CB2 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Inflow Area=1.843 ac Peak Elev=323.72' 18.0" Round Culvert n=0.012 L=305.2' S=0.0043 '/' 1.46 cfs1.46 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 23HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2P: Existing Infiltration Inflow Area = 4.123 ac, 44.82% Impervious, Inflow Depth = 0.11" for 1-Year event Inflow = 0.12 cfs @ 13.07 hrs, Volume= 0.037 af Outflow = 0.12 cfs @ 13.07 hrs, Volume= 0.037 af, Atten= 0%, Lag= 0.0 min Discarded = 0.12 cfs @ 13.07 hrs, Volume= 0.037 af Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 319.80' @ 13.07 hrs Surf.Area= 0.000 ac Storage= 0.000 af Flood Elev= 327.97' Storage= 0.087 af Plug-Flow detention time= 0.0 min calculated for 0.037 af (100% of inflow) Center-of-Mass det. time= 0.0 min ( 989.1 - 989.1 ) Volume Invert Avail.Storage Storage Description #1 320.00' 0.050 af 24.0" Round CMP_Round 24" x 18 L= 38.2' #2 319.90' 0.020 af 24.0" Round CMP_Round 24" L= 270.7' #3 319.80' 0.018 af 24.0" Round CMP_Round 24" L= 246.0' 0.087 af Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 319.80'13.24 cfs Exfiltration when above 319.80' #2 Secondary 322.98'24.0" Round RCP_Round 24" L= 75.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 322.98' / 322.15' S= 0.0111 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 3.14 sf Discarded OutFlow Max=13.24 cfs @ 13.07 hrs HW=319.80' (Free Discharge) 1=Exfiltration (Exfiltration Controls 13.24 cfs) Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=319.80' (Free Discharge) 2=RCP_Round 24" ( Controls 0.00 cfs) NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 24HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 2P: Existing Infiltration Inflow Outflow Discarded Secondary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)0.135 0.13 0.125 0.12 0.115 0.11 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Inflow Area=4.123 ac Peak Elev=319.80' Storage=0.000 af 0.12 cfs0.12 cfs0.12 cfs 0.00 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 25HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3: CB3 Inflow Area = 3.929 ac, 69.48% Impervious, Inflow Depth = 0.51" for 1-Year event Inflow = 2.64 cfs @ 12.14 hrs, Volume= 0.167 af Outflow = 2.64 cfs @ 12.14 hrs, Volume= 0.167 af, Atten= 0%, Lag= 0.0 min Primary = 2.64 cfs @ 12.14 hrs, Volume= 0.167 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 322.42' @ 12.14 hrs Flood Elev= 329.13' Device Routing Invert Outlet Devices #1 Primary 321.70'36.0" Round RCP_Round 36" L= 228.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 321.70' / 321.00' S= 0.0031 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 7.07 sf Primary OutFlow Max=2.58 cfs @ 12.14 hrs HW=322.41' (Free Discharge) 1=RCP_Round 36" (Barrel Controls 2.58 cfs @ 3.02 fps) Pond 3: CB3 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 Inflow Area=3.929 ac Peak Elev=322.42' 36.0" Round Culvert n=0.012 L=228.0' S=0.0031 '/' 2.64 cfs2.64 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 26HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3P: Existing Infiltration Inflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 321.10' @ 1.00 hrs Storage= 0.000 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no inflow) Volume Invert Avail.Storage Storage Description #1 321.10' 0.099 af 36.0" Round CMP_Round 36" x 3 L= 203.0' Device Routing Invert Outlet Devices #1 Secondary 323.20'15.0" Round CMP_Round 15" L= 18.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 323.20' / 323.10' S= 0.0056 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=321.10' (Free Discharge) 1=CMP_Round 15" ( Controls 0.00 cfs) Pond 3P: Existing Infiltration Inflow Secondary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Peak Elev=321.10' Storage=0.000 af 15.0" Round Culvert n=0.012 L=18.0' S=0.0056 '/' 0.00 cfs0.00 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 27HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 4: CB4 Inflow Area = 1.888 ac, 64.35% Impervious, Inflow Depth = 0.40" for 1-Year event Inflow = 1.05 cfs @ 12.13 hrs, Volume= 0.062 af Outflow = 1.05 cfs @ 12.13 hrs, Volume= 0.062 af, Atten= 0%, Lag= 0.0 min Primary = 1.05 cfs @ 12.13 hrs, Volume= 0.062 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 322.76' @ 12.13 hrs Flood Elev= 328.47' Device Routing Invert Outlet Devices #1 Primary 322.20'15.0" Round RCP_Round 15" L= 47.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 322.20' / 321.80' S= 0.0085 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Primary OutFlow Max=1.00 cfs @ 12.13 hrs HW=322.74' (Free Discharge) 1=RCP_Round 15" (Inlet Controls 1.00 cfs @ 1.98 fps) Pond 4: CB4 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Inflow Area=1.888 ac Peak Elev=322.76' 15.0" Round Culvert n=0.012 L=47.0' S=0.0085 '/' 1.05 cfs1.05 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 28HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 5: CB5 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 0.58" for 1-Year event Inflow = 1.46 cfs @ 12.16 hrs, Volume= 0.090 af Outflow = 1.46 cfs @ 12.16 hrs, Volume= 0.090 af, Atten= 0%, Lag= 0.0 min Primary = 1.46 cfs @ 12.16 hrs, Volume= 0.090 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 325.68' @ 12.16 hrs Device Routing Invert Outlet Devices #1 Primary 324.88'12.0" Round RCP_Round 12" L= 37.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 324.88' / 324.70' S= 0.0049 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf Primary OutFlow Max=1.41 cfs @ 12.16 hrs HW=325.66' (Free Discharge) 1=RCP_Round 12" (Barrel Controls 1.41 cfs @ 2.95 fps) Pond 5: CB5 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Inflow Area=1.843 ac Peak Elev=325.68' 12.0" Round Culvert n=0.012 L=37.0' S=0.0049 '/' 1.46 cfs1.46 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 29HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond IR: CB6 Inflow Area = 2.986 ac, 66.68% Impervious, Inflow Depth = 0.43" for 1-Year event Inflow = 1.52 cfs @ 12.19 hrs, Volume= 0.107 af Outflow = 1.49 cfs @ 12.18 hrs, Volume= 0.107 af, Atten= 2%, Lag= 0.0 min Discarded = 0.06 cfs @ 16.35 hrs, Volume= 0.048 af Primary = 1.44 cfs @ 12.18 hrs, Volume= 0.059 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 326.60' @ 12.18 hrs Surf.Area= 0.001 ac Storage= 0.005 af Flood Elev= 330.00' Storage= 0.005 af Plug-Flow detention time= 16.9 min calculated for 0.107 af (100% of inflow) Center-of-Mass det. time= 16.9 min ( 885.5 - 868.6 ) Volume Invert Avail.Storage Storage Description #1 324.85' 0.005 af 18.0" Round RCP_Round 18" L= 117.2' S= 0.0050 '/' Device Routing Invert Outlet Devices #1 Discarded 324.85'13.730 in/hr Exfiltration over Horizontal area #2 Primary 326.35'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.06 cfs @ 16.35 hrs HW=326.35' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.06 cfs) Primary OutFlow Max=1.41 cfs @ 12.18 hrs HW=326.60' (Free Discharge) 2=Broad-Crested Rectangular Weir (Weir Controls 1.41 cfs @ 1.41 fps) NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 30HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond IR: CB6 Inflow Outflow Discarded Primary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Inflow Area=2.986 ac Peak Elev=326.60' Storage=0.005 af 1.52 cfs1.49 cfs 0.06 cfs 1.44 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 31HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 1: SN 1 Inflow Area = 3.929 ac, 69.48% Impervious, Inflow Depth = 0.51" for 1-Year event Inflow = 2.64 cfs @ 12.14 hrs, Volume= 0.167 af Primary = 2.64 cfs @ 12.14 hrs, Volume= 0.167 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 1: SN 1 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 Inflow Area=3.929 ac 2.64 cfs2.64 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 32HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 2: SN 2 Inflow Area = 0.812 ac, 71.67% Impervious, Inflow Depth = 0.54" for 1-Year event Inflow = 0.68 cfs @ 12.11 hrs, Volume= 0.037 af Primary = 0.68 cfs @ 12.11 hrs, Volume= 0.037 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 2: SN 2 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.812 ac 0.68 cfs0.68 cfs NRCC 24-hr A 1-Year Rainfall=1.90"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 33HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 3: HTA's Permit Inflow Area = 0.505 ac,100.00% Impervious, Inflow Depth = 1.68" for 1-Year event Inflow = 1.21 cfs @ 12.10 hrs, Volume= 0.070 af Primary = 1.21 cfs @ 12.10 hrs, Volume= 0.070 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 3: HTA's Permit InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Inflow Area=0.505 ac 1.21 cfs1.21 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 34HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Time span=1.00-72.00 hrs, dt=0.05 hrs, 1421 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=0.198 ac 84.85% Impervious Runoff Depth=1.23"Subcatchment Sc 1A: Existing to CB3 Flow Length=156' Tc=2.4 min CN=89 Runoff=0.43 cfs 0.020 af Runoff Area=1.888 ac 64.35% Impervious Runoff Depth=0.58"Subcatchment Sc 1B: Existing to CB 4 Flow Length=269' Tc=4.6 min CN=77 Runoff=1.65 cfs 0.092 af Runoff Area=2.986 ac 66.68% Impervious Runoff Depth=0.62"Subcatchment Sc 1C: Post SN-1 Flow Length=404' Tc=9.4 min CN=78 Runoff=2.34 cfs 0.155 af Runoff Area=1.843 ac 73.09% Impervious Runoff Depth=0.81"Subcatchment Sc 1D: Post SN-1 Flow Length=398' Tc=8.3 min CN=82 Runoff=2.07 cfs 0.125 af Runoff Area=4.123 ac 44.82% Impervious Runoff Depth=0.21"Subcatchment Sc 2A: Post SN-2 Flow Length=342' Tc=44.5 min CN=65 Runoff=0.31 cfs 0.071 af Runoff Area=0.812 ac 71.67% Impervious Runoff Depth=0.76"Subcatchment Sc 2B: Post SN-2 Flow Length=219' Tc=4.3 min CN=81 Runoff=0.98 cfs 0.052 af Subcatchment Sc 3: EG Outside 3 Runoff=0.00 cfs 0.000 af Runoff Area=21,977 sf 100.00% Impervious Runoff Depth=2.01"Subcatchment Sc 4: Towards HTA RON Flow Length=134' Slope=0.0024 '/' Tc=4.3 min CN=98 Runoff=1.44 cfs 0.085 af Peak Elev=325.35' Inflow=2.07 cfs 0.125 afPond 1: CB1 18.0" Round Culvert n=0.012 L=297.2' S=0.0047 '/' Outflow=2.07 cfs 0.125 af Peak Elev=324.59' Storage=884 cf Inflow=2.33 cfs 0.101 afPond 1A P: Proposed Infiltration Discarded=0.96 cfs 0.101 af Secondary=0.00 cfs 0.000 af Outflow=0.96 cfs 0.101 af Peak Elev=323.85' Inflow=2.07 cfs 0.125 afPond 2: CB2 18.0" Round Culvert n=0.012 L=305.2' S=0.0043 '/' Outflow=2.07 cfs 0.125 af Peak Elev=319.80' Storage=0.000 af Inflow=0.31 cfs 0.071 afPond 2P: Existing Infiltration Discarded=0.31 cfs 0.071 af Secondary=0.00 cfs 0.000 af Outflow=0.31 cfs 0.071 af Peak Elev=322.58' Inflow=3.87 cfs 0.237 afPond 3: CB3 36.0" Round Culvert n=0.012 L=228.0' S=0.0031 '/' Outflow=3.87 cfs 0.237 af Peak Elev=321.10' Storage=0.000 af Inflow=0.00 cfs 0.000 afPond 3P: Existing Infiltration 15.0" Round Culvert n=0.012 L=18.0' S=0.0056 '/' Outflow=0.00 cfs 0.000 af Peak Elev=322.92' Inflow=1.65 cfs 0.092 afPond 4: CB4 15.0" Round Culvert n=0.012 L=47.0' S=0.0085 '/' Outflow=1.65 cfs 0.092 af Peak Elev=325.89' Inflow=2.07 cfs 0.125 afPond 5: CB5 12.0" Round Culvert n=0.012 L=37.0' S=0.0049 '/' Outflow=2.07 cfs 0.125 af NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 35HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Peak Elev=326.69' Storage=0.005 af Inflow=2.34 cfs 0.155 afPond IR: CB6 Discarded=0.06 cfs 0.055 af Primary=2.33 cfs 0.101 af Outflow=2.39 cfs 0.155 af Inflow=3.87 cfs 0.237 afLink SN 1: SN 1 Primary=3.87 cfs 0.237 af Inflow=0.98 cfs 0.052 afLink SN 2: SN 2 Primary=0.98 cfs 0.052 af Inflow=1.44 cfs 0.085 afLink SN 3: HTA's Permit Primary=1.44 cfs 0.085 af Total Runoff Area = 12.355 ac Runoff Volume = 0.599 af Average Runoff Depth = 0.58" 38.03% Pervious = 4.699 ac 61.97% Impervious = 7.656 ac NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 36HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1A: Existing to CB3 Runoff = 0.43 cfs @ 12.09 hrs, Volume= 0.020 af, Depth= 1.23" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 2-Year Rainfall=2.24" Area (ac) CN Description 0.030 39 >75% Grass cover, Good, HSG A 0.168 98 Water Surface, HSG A 0.198 89 Weighted Average 0.030 15.15% Pervious Area 0.168 84.85% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.0 123 0.0127 1.00 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.4 33 0.0485 1.54 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 2.4 156 Total Subcatchment Sc 1A: Existing to CB3 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)0.46 0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 NRCC 24-hr A 2-Year Rainfall=2.24" Runoff Area=0.198 ac Runoff Volume=0.020 af Runoff Depth=1.23" Flow Length=156' Tc=2.4 min CN=89 0.43 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 37HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1B: Existing to CB 4 Runoff = 1.65 cfs @ 12.12 hrs, Volume= 0.092 af, Depth= 0.58" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 2-Year Rainfall=2.24" Area (ac) CN Description 0.673 39 >75% Grass cover, Good, HSG A 1.215 98 Paved parking, HSG A 1.888 77 Weighted Average 0.673 35.65% Pervious Area 1.215 64.35% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.3 66 0.0105 0.82 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 3.3 203 0.0212 1.02 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 4.6 269 Total Subcatchment Sc 1B: Existing to CB 4 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 2-Year Rainfall=2.24" Runoff Area=1.888 ac Runoff Volume=0.092 af Runoff Depth=0.58" Flow Length=269' Tc=4.6 min CN=77 1.65 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 38HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1C: Post SN-1 Runoff = 2.34 cfs @ 12.18 hrs, Volume= 0.155 af, Depth= 0.62" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 2-Year Rainfall=2.24" Area (ac) CN Description 0.995 39 >75% Grass cover, Good, HSG A 1.991 98 Paved parking, HSG A 2.986 78 Weighted Average 0.995 33.32% Pervious Area 1.991 66.68% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 219 0.0054 0.80 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.3 24 0.0046 1.38 Shallow Concentrated Flow, B-C Paved Kv= 20.3 fps 4.5 161 0.0074 0.60 Shallow Concentrated Flow, C-D Short Grass Pasture Kv= 7.0 fps 9.4 404 Total Subcatchment Sc 1C: Post SN-1 Runoff Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 NRCC 24-hr A 2-Year Rainfall=2.24" Runoff Area=2.986 ac Runoff Volume=0.155 af Runoff Depth=0.62" Flow Length=404' Tc=9.4 min CN=78 2.34 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 39HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1D: Post SN-1 Runoff = 2.07 cfs @ 12.16 hrs, Volume= 0.125 af, Depth= 0.81" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 2-Year Rainfall=2.24" Area (ac) CN Description 0.496 39 >75% Grass cover, Good, HSG A 1.347 98 Paved parking, HSG A 1.843 82 Weighted Average 0.496 26.91% Pervious Area 1.347 73.09% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 226 0.0055 0.81 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.2 23 0.0109 2.12 Shallow Concentrated Flow, B-C Paved Kv= 20.3 fps 3.5 149 0.0104 0.71 Shallow Concentrated Flow, C-D Short Grass Pasture Kv= 7.0 fps 8.3 398 Total Subcatchment Sc 1D: Post SN-1 Runoff Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 NRCC 24-hr A 2-Year Rainfall=2.24" Runoff Area=1.843 ac Runoff Volume=0.125 af Runoff Depth=0.81" Flow Length=398' Tc=8.3 min CN=82 2.07 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 40HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 2A: Post SN-2 Runoff = 0.31 cfs @ 12.88 hrs, Volume= 0.071 af, Depth= 0.21" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 2-Year Rainfall=2.24" Area (ac) CN Description * 2.275 39 Pasture/Grassland/Range, Good HSG A 1.848 98 Paved parking, HSG A 4.123 65 Weighted Average 2.275 55.18% Pervious Area 1.848 44.82% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 27.5 94 0.0156 0.06 Sheet Flow, A-B Grass: Bermuda n= 0.410 P2= 2.25" 17.0 248 0.0012 0.24 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 44.5 342 Total Subcatchment Sc 2A: Post SN-2 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 NRCC 24-hr A 2-Year Rainfall=2.24" Runoff Area=4.123 ac Runoff Volume=0.071 af Runoff Depth=0.21" Flow Length=342' Tc=44.5 min CN=65 0.31 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 41HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 2B: Post SN-2 Runoff = 0.98 cfs @ 12.11 hrs, Volume= 0.052 af, Depth= 0.76" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 2-Year Rainfall=2.24" Area (ac) CN Description 0.230 39 >75% Grass cover, Good, HSG A 0.582 98 Paved parking, HSG A 0.812 81 Weighted Average 0.230 28.33% Pervious Area 0.582 71.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.8 46 0.0165 0.91 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 3.5 173 0.0142 0.83 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 4.3 219 Total Subcatchment Sc 2B: Post SN-2 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 2-Year Rainfall=2.24" Runoff Area=0.812 ac Runoff Volume=0.052 af Runoff Depth=0.76" Flow Length=219' Tc=4.3 min CN=81 0.98 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 42HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 3: EG Outside 3 Runoff = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 2-Year Rainfall=2.24" Subcatchment Sc 3: EG Outside 3 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 2-Year Rainfall=2.24" 0.00 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 43HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 4: Towards HTA RON Runoff = 1.44 cfs @ 12.10 hrs, Volume= 0.085 af, Depth= 2.01" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 2-Year Rainfall=2.24" Area (sf) CN Description 0 39 >75% Grass cover, Good, HSG A 21,977 98 Paved parking, HSG A 21,977 98 Weighted Average 21,977 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.3 134 0.0024 0.52 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" Subcatchment Sc 4: Towards HTA RON Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 2-Year Rainfall=2.24" Runoff Area=21,977 sf Runoff Volume=0.085 af Runoff Depth=2.01" Flow Length=134' Slope=0.0024 '/' Tc=4.3 min CN=98 1.44 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 44HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1: CB1 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 0.81" for 2-Year event Inflow = 2.07 cfs @ 12.16 hrs, Volume= 0.125 af Outflow = 2.07 cfs @ 12.16 hrs, Volume= 0.125 af, Atten= 0%, Lag= 0.0 min Primary = 2.07 cfs @ 12.16 hrs, Volume= 0.125 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 325.35' @ 12.16 hrs Flood Elev= 329.76' Device Routing Invert Outlet Devices #1 Primary 324.60'18.0" Round RCP_Round 18" L= 297.2' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 324.60' / 323.20' S= 0.0047 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf Primary OutFlow Max=2.01 cfs @ 12.16 hrs HW=325.34' (Free Discharge) 1=RCP_Round 18" (Inlet Controls 2.01 cfs @ 2.31 fps) Pond 1: CB1 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 Inflow Area=1.843 ac Peak Elev=325.35' 18.0" Round Culvert n=0.012 L=297.2' S=0.0047 '/' 2.07 cfs2.07 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 45HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1A P: Proposed Infiltration Inflow Area = 2.986 ac, 66.68% Impervious, Inflow Depth = 0.40" for 2-Year event Inflow = 2.33 cfs @ 12.17 hrs, Volume= 0.101 af Outflow = 0.96 cfs @ 12.25 hrs, Volume= 0.101 af, Atten= 59%, Lag= 4.7 min Discarded = 0.96 cfs @ 12.25 hrs, Volume= 0.101 af Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 324.59' @ 12.40 hrs Surf.Area= 3,029 sf Storage= 884 cf Plug-Flow detention time= 7.1 min calculated for 0.100 af (100% of inflow) Center-of-Mass det. time= 7.1 min ( 775.6 - 768.5 ) Volume Invert Avail.Storage Storage Description #1A 323.97' 2,125 cf 44.83'W x 67.28'L x 2.33'H Field A 7,038 cf Overall - 1,725 cf Embedded = 5,313 cf x 40.0% Voids #2A 324.47' 1,725 cf ADS_StormTech SC-310 +Cap x 117 Inside #1 Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap 117 Chambers in 13 Rows #3 324.47' 57 cf 4.00'D x 4.50'H Vertical Cone/Cylinder #4 328.90' 1,666 cf Custom Stage Data (Prismatic) Listed below (Recalc) 5,572 cf Total Available Storage Storage Group A created with Chamber Wizard Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 328.90 74 0 0 329.00 321 20 20 329.10 764 54 74 329.50 7,194 1,592 1,666 Device Routing Invert Outlet Devices #1 Discarded 323.97'13.730 in/hr Exfiltration over Horizontal area #2 Secondary 329.15'9.7" x 2.0" Horiz. Orifice/Grate X 2.00 columns X 10 rows C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.96 cfs @ 12.25 hrs HW=324.51' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.96 cfs) Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=323.97' (Free Discharge) 2=Orifice/Grate ( Controls 0.00 cfs) NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 46HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 1A P: Proposed Infiltration - Chamber Wizard Field A Chamber Model = ADS_StormTech SC-310 +Cap (ADS StormTech® SC-310 with cap length) Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap 34.0" Wide + 6.0" Spacing = 40.0" C-C Row Spacing 9 Chambers/Row x 7.12' Long +0.60' Cap Length x 2 = 65.28' Row Length +12.0" End Stone x 2 = 67.28' Base Length 13 Rows x 34.0" Wide + 6.0" Spacing x 12 + 12.0" Side Stone x 2 = 44.83' Base Width 6.0" Stone Base + 16.0" Chamber Height + 6.0" Stone Cover = 2.33' Field Height 117 Chambers x 14.7 cf = 1,724.8 cf Chamber Storage 7,038.2 cf Field - 1,724.8 cf Chambers = 5,313.4 cf Stone x 40.0% Voids = 2,125.4 cf Stone Storage Chamber Storage + Stone Storage = 3,850.2 cf = 0.088 af Overall Storage Efficiency = 54.7% Overall System Size = 67.28' x 44.83' x 2.33' 117 Chambers 260.7 cy Field 196.8 cy Stone NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 47HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 1A P: Proposed Infiltration Inflow Outflow Discarded Secondary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 Inflow Area=2.986 ac Peak Elev=324.59' Storage=884 cf 2.33 cfs 0.96 cfs0.96 cfs 0.00 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 48HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2: CB2 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 0.81" for 2-Year event Inflow = 2.07 cfs @ 12.16 hrs, Volume= 0.125 af Outflow = 2.07 cfs @ 12.16 hrs, Volume= 0.125 af, Atten= 0%, Lag= 0.0 min Primary = 2.07 cfs @ 12.16 hrs, Volume= 0.125 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 323.85' @ 12.16 hrs Flood Elev= 331.03' Device Routing Invert Outlet Devices #1 Primary 323.10'18.0" Round RCP_Round 18" L= 305.2' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 323.10' / 321.80' S= 0.0043 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf Primary OutFlow Max=2.01 cfs @ 12.16 hrs HW=323.84' (Free Discharge) 1=RCP_Round 18" (Inlet Controls 2.01 cfs @ 2.31 fps) Pond 2: CB2 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 Inflow Area=1.843 ac Peak Elev=323.85' 18.0" Round Culvert n=0.012 L=305.2' S=0.0043 '/' 2.07 cfs2.07 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 49HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2P: Existing Infiltration Inflow Area = 4.123 ac, 44.82% Impervious, Inflow Depth = 0.21" for 2-Year event Inflow = 0.31 cfs @ 12.88 hrs, Volume= 0.071 af Outflow = 0.31 cfs @ 12.88 hrs, Volume= 0.071 af, Atten= 0%, Lag= 0.0 min Discarded = 0.31 cfs @ 12.88 hrs, Volume= 0.071 af Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 319.80' @ 12.88 hrs Surf.Area= 0.001 ac Storage= 0.000 af Flood Elev= 327.97' Storage= 0.087 af Plug-Flow detention time= 0.0 min calculated for 0.071 af (100% of inflow) Center-of-Mass det. time= 0.0 min ( 955.0 - 955.0 ) Volume Invert Avail.Storage Storage Description #1 320.00' 0.050 af 24.0" Round CMP_Round 24" x 18 L= 38.2' #2 319.90' 0.020 af 24.0" Round CMP_Round 24" L= 270.7' #3 319.80' 0.018 af 24.0" Round CMP_Round 24" L= 246.0' 0.087 af Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 319.80'13.24 cfs Exfiltration when above 319.80' #2 Secondary 322.98'24.0" Round RCP_Round 24" L= 75.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 322.98' / 322.15' S= 0.0111 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 3.14 sf Discarded OutFlow Max=13.24 cfs @ 12.88 hrs HW=319.80' (Free Discharge) 1=Exfiltration (Exfiltration Controls 13.24 cfs) Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=319.80' (Free Discharge) 2=RCP_Round 24" ( Controls 0.00 cfs) NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 50HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 2P: Existing Infiltration Inflow Outflow Discarded Secondary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=4.123 ac Peak Elev=319.80' Storage=0.000 af 0.31 cfs0.31 cfs0.31 cfs 0.00 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 51HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3: CB3 Inflow Area = 3.929 ac, 69.48% Impervious, Inflow Depth = 0.72" for 2-Year event Inflow = 3.87 cfs @ 12.14 hrs, Volume= 0.237 af Outflow = 3.87 cfs @ 12.14 hrs, Volume= 0.237 af, Atten= 0%, Lag= 0.0 min Primary = 3.87 cfs @ 12.14 hrs, Volume= 0.237 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 322.58' @ 12.14 hrs Flood Elev= 329.13' Device Routing Invert Outlet Devices #1 Primary 321.70'36.0" Round RCP_Round 36" L= 228.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 321.70' / 321.00' S= 0.0031 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 7.07 sf Primary OutFlow Max=3.75 cfs @ 12.14 hrs HW=322.56' (Free Discharge) 1=RCP_Round 36" (Barrel Controls 3.75 cfs @ 3.34 fps) Pond 3: CB3 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 Inflow Area=3.929 ac Peak Elev=322.58' 36.0" Round Culvert n=0.012 L=228.0' S=0.0031 '/' 3.87 cfs3.87 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 52HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3P: Existing Infiltration Inflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 321.10' @ 1.00 hrs Storage= 0.000 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no inflow) Volume Invert Avail.Storage Storage Description #1 321.10' 0.099 af 36.0" Round CMP_Round 36" x 3 L= 203.0' Device Routing Invert Outlet Devices #1 Secondary 323.20'15.0" Round CMP_Round 15" L= 18.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 323.20' / 323.10' S= 0.0056 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=321.10' (Free Discharge) 1=CMP_Round 15" ( Controls 0.00 cfs) Pond 3P: Existing Infiltration Inflow Secondary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Peak Elev=321.10' Storage=0.000 af 15.0" Round Culvert n=0.012 L=18.0' S=0.0056 '/' 0.00 cfs0.00 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 53HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 4: CB4 Inflow Area = 1.888 ac, 64.35% Impervious, Inflow Depth = 0.58" for 2-Year event Inflow = 1.65 cfs @ 12.12 hrs, Volume= 0.092 af Outflow = 1.65 cfs @ 12.12 hrs, Volume= 0.092 af, Atten= 0%, Lag= 0.0 min Primary = 1.65 cfs @ 12.12 hrs, Volume= 0.092 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 322.92' @ 12.12 hrs Flood Elev= 328.47' Device Routing Invert Outlet Devices #1 Primary 322.20'15.0" Round RCP_Round 15" L= 47.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 322.20' / 321.80' S= 0.0085 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Primary OutFlow Max=1.57 cfs @ 12.12 hrs HW=322.89' (Free Discharge) 1=RCP_Round 15" (Inlet Controls 1.57 cfs @ 2.24 fps) Pond 4: CB4 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Inflow Area=1.888 ac Peak Elev=322.92' 15.0" Round Culvert n=0.012 L=47.0' S=0.0085 '/' 1.65 cfs1.65 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 54HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 5: CB5 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 0.81" for 2-Year event Inflow = 2.07 cfs @ 12.16 hrs, Volume= 0.125 af Outflow = 2.07 cfs @ 12.16 hrs, Volume= 0.125 af, Atten= 0%, Lag= 0.0 min Primary = 2.07 cfs @ 12.16 hrs, Volume= 0.125 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 325.89' @ 12.16 hrs Device Routing Invert Outlet Devices #1 Primary 324.88'12.0" Round RCP_Round 12" L= 37.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 324.88' / 324.70' S= 0.0049 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf Primary OutFlow Max=2.01 cfs @ 12.16 hrs HW=325.87' (Free Discharge) 1=RCP_Round 12" (Barrel Controls 2.01 cfs @ 3.21 fps) Pond 5: CB5 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 Inflow Area=1.843 ac Peak Elev=325.89' 12.0" Round Culvert n=0.012 L=37.0' S=0.0049 '/' 2.07 cfs2.07 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 55HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond IR: CB6 Inflow Area = 2.986 ac, 66.68% Impervious, Inflow Depth = 0.62" for 2-Year event Inflow = 2.34 cfs @ 12.18 hrs, Volume= 0.155 af Outflow = 2.39 cfs @ 12.17 hrs, Volume= 0.155 af, Atten= 0%, Lag= 0.0 min Discarded = 0.06 cfs @ 17.80 hrs, Volume= 0.055 af Primary = 2.33 cfs @ 12.17 hrs, Volume= 0.101 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 326.69' @ 12.17 hrs Surf.Area= 0.001 ac Storage= 0.005 af Flood Elev= 330.00' Storage= 0.005 af Plug-Flow detention time= 15.0 min calculated for 0.155 af (100% of inflow) Center-of-Mass det. time= 15.0 min ( 872.3 - 857.3 ) Volume Invert Avail.Storage Storage Description #1 324.85' 0.005 af 18.0" Round RCP_Round 18" L= 117.2' S= 0.0050 '/' Device Routing Invert Outlet Devices #1 Discarded 324.85'13.730 in/hr Exfiltration over Horizontal area #2 Primary 326.35'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.06 cfs @ 17.80 hrs HW=326.35' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.06 cfs) Primary OutFlow Max=2.21 cfs @ 12.17 hrs HW=326.68' (Free Discharge) 2=Broad-Crested Rectangular Weir (Weir Controls 2.21 cfs @ 1.66 fps) NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 56HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond IR: CB6 Inflow Outflow Discarded Primary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 Inflow Area=2.986 ac Peak Elev=326.69' Storage=0.005 af 2.34 cfs2.39 cfs 0.06 cfs 2.33 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 57HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 1: SN 1 Inflow Area = 3.929 ac, 69.48% Impervious, Inflow Depth = 0.72" for 2-Year event Inflow = 3.87 cfs @ 12.14 hrs, Volume= 0.237 af Primary = 3.87 cfs @ 12.14 hrs, Volume= 0.237 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 1: SN 1 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 Inflow Area=3.929 ac 3.87 cfs3.87 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 58HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 2: SN 2 Inflow Area = 0.812 ac, 71.67% Impervious, Inflow Depth = 0.76" for 2-Year event Inflow = 0.98 cfs @ 12.11 hrs, Volume= 0.052 af Primary = 0.98 cfs @ 12.11 hrs, Volume= 0.052 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 2: SN 2 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Inflow Area=0.812 ac 0.98 cfs0.98 cfs NRCC 24-hr A 2-Year Rainfall=2.24"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 59HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 3: HTA's Permit Inflow Area = 0.505 ac,100.00% Impervious, Inflow Depth = 2.01" for 2-Year event Inflow = 1.44 cfs @ 12.10 hrs, Volume= 0.085 af Primary = 1.44 cfs @ 12.10 hrs, Volume= 0.085 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 3: HTA's Permit InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Inflow Area=0.505 ac 1.44 cfs1.44 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 60HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Time span=1.00-72.00 hrs, dt=0.05 hrs, 1421 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=0.198 ac 84.85% Impervious Runoff Depth=1.72"Subcatchment Sc 1A: Existing to CB3 Flow Length=156' Tc=2.4 min CN=89 Runoff=0.59 cfs 0.028 af Runoff Area=1.888 ac 64.35% Impervious Runoff Depth=0.93"Subcatchment Sc 1B: Existing to CB 4 Flow Length=269' Tc=4.6 min CN=77 Runoff=2.75 cfs 0.147 af Runoff Area=2.986 ac 66.68% Impervious Runoff Depth=0.99"Subcatchment Sc 1C: Post SN-1 Flow Length=404' Tc=9.4 min CN=78 Runoff=3.83 cfs 0.246 af Runoff Area=1.843 ac 73.09% Impervious Runoff Depth=1.22"Subcatchment Sc 1D: Post SN-1 Flow Length=398' Tc=8.3 min CN=82 Runoff=3.16 cfs 0.188 af Runoff Area=4.123 ac 44.82% Impervious Runoff Depth=0.42"Subcatchment Sc 2A: Post SN-2 Flow Length=342' Tc=44.5 min CN=65 Runoff=0.80 cfs 0.144 af Runoff Area=0.812 ac 71.67% Impervious Runoff Depth=1.16"Subcatchment Sc 2B: Post SN-2 Flow Length=219' Tc=4.3 min CN=81 Runoff=1.52 cfs 0.079 af Subcatchment Sc 3: EG Outside 3 Runoff=0.00 cfs 0.000 af Runoff Area=21,977 sf 100.00% Impervious Runoff Depth=2.57"Subcatchment Sc 4: Towards HTA RON Flow Length=134' Slope=0.0024 '/' Tc=4.3 min CN=98 Runoff=1.82 cfs 0.108 af Peak Elev=325.56' Inflow=3.16 cfs 0.188 afPond 1: CB1 18.0" Round Culvert n=0.012 L=297.2' S=0.0047 '/' Outflow=3.16 cfs 0.188 af Peak Elev=325.29' Storage=2,447 cf Inflow=3.81 cfs 0.184 afPond 1A P: Proposed Infiltration Discarded=0.96 cfs 0.184 af Secondary=0.00 cfs 0.000 af Outflow=0.96 cfs 0.184 af Peak Elev=324.06' Inflow=3.16 cfs 0.188 afPond 2: CB2 18.0" Round Culvert n=0.012 L=305.2' S=0.0043 '/' Outflow=3.16 cfs 0.188 af Peak Elev=319.80' Storage=0.000 af Inflow=0.80 cfs 0.144 afPond 2P: Existing Infiltration Discarded=0.80 cfs 0.144 af Secondary=0.00 cfs 0.000 af Outflow=0.80 cfs 0.144 af Peak Elev=322.82' Inflow=6.08 cfs 0.363 afPond 3: CB3 36.0" Round Culvert n=0.012 L=228.0' S=0.0031 '/' Outflow=6.08 cfs 0.363 af Peak Elev=321.10' Storage=0.000 af Inflow=0.00 cfs 0.000 afPond 3P: Existing Infiltration 15.0" Round Culvert n=0.012 L=18.0' S=0.0056 '/' Outflow=0.00 cfs 0.000 af Peak Elev=323.18' Inflow=2.75 cfs 0.147 afPond 4: CB4 15.0" Round Culvert n=0.012 L=47.0' S=0.0085 '/' Outflow=2.75 cfs 0.147 af Peak Elev=326.50' Inflow=3.16 cfs 0.188 afPond 5: CB5 12.0" Round Culvert n=0.012 L=37.0' S=0.0049 '/' Outflow=3.16 cfs 0.188 af NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 61HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Peak Elev=326.82' Storage=0.005 af Inflow=3.83 cfs 0.246 afPond IR: CB6 Discarded=0.06 cfs 0.062 af Primary=3.81 cfs 0.184 af Outflow=3.87 cfs 0.246 af Inflow=6.08 cfs 0.363 afLink SN 1: SN 1 Primary=6.08 cfs 0.363 af Inflow=1.52 cfs 0.079 afLink SN 2: SN 2 Primary=1.52 cfs 0.079 af Inflow=1.82 cfs 0.108 afLink SN 3: HTA's Permit Primary=1.82 cfs 0.108 af Total Runoff Area = 12.355 ac Runoff Volume = 0.940 af Average Runoff Depth = 0.91" 38.03% Pervious = 4.699 ac 61.97% Impervious = 7.656 ac NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 62HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1A: Existing to CB3 Runoff = 0.59 cfs @ 12.09 hrs, Volume= 0.028 af, Depth= 1.72" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 5-Year Rainfall=2.80" Area (ac) CN Description 0.030 39 >75% Grass cover, Good, HSG A 0.168 98 Water Surface, HSG A 0.198 89 Weighted Average 0.030 15.15% Pervious Area 0.168 84.85% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.0 123 0.0127 1.00 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.4 33 0.0485 1.54 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 2.4 156 Total Subcatchment Sc 1A: Existing to CB3 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 NRCC 24-hr A 5-Year Rainfall=2.80" Runoff Area=0.198 ac Runoff Volume=0.028 af Runoff Depth=1.72" Flow Length=156' Tc=2.4 min CN=89 0.59 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 63HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1B: Existing to CB 4 Runoff = 2.75 cfs @ 12.12 hrs, Volume= 0.147 af, Depth= 0.93" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 5-Year Rainfall=2.80" Area (ac) CN Description 0.673 39 >75% Grass cover, Good, HSG A 1.215 98 Paved parking, HSG A 1.888 77 Weighted Average 0.673 35.65% Pervious Area 1.215 64.35% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.3 66 0.0105 0.82 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 3.3 203 0.0212 1.02 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 4.6 269 Total Subcatchment Sc 1B: Existing to CB 4 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)3 2 1 0 NRCC 24-hr A 5-Year Rainfall=2.80" Runoff Area=1.888 ac Runoff Volume=0.147 af Runoff Depth=0.93" Flow Length=269' Tc=4.6 min CN=77 2.75 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 64HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1C: Post SN-1 Runoff = 3.83 cfs @ 12.18 hrs, Volume= 0.246 af, Depth= 0.99" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 5-Year Rainfall=2.80" Area (ac) CN Description 0.995 39 >75% Grass cover, Good, HSG A 1.991 98 Paved parking, HSG A 2.986 78 Weighted Average 0.995 33.32% Pervious Area 1.991 66.68% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 219 0.0054 0.80 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.3 24 0.0046 1.38 Shallow Concentrated Flow, B-C Paved Kv= 20.3 fps 4.5 161 0.0074 0.60 Shallow Concentrated Flow, C-D Short Grass Pasture Kv= 7.0 fps 9.4 404 Total Subcatchment Sc 1C: Post SN-1 Runoff Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 NRCC 24-hr A 5-Year Rainfall=2.80" Runoff Area=2.986 ac Runoff Volume=0.246 af Runoff Depth=0.99" Flow Length=404' Tc=9.4 min CN=78 3.83 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 65HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1D: Post SN-1 Runoff = 3.16 cfs @ 12.16 hrs, Volume= 0.188 af, Depth= 1.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 5-Year Rainfall=2.80" Area (ac) CN Description 0.496 39 >75% Grass cover, Good, HSG A 1.347 98 Paved parking, HSG A 1.843 82 Weighted Average 0.496 26.91% Pervious Area 1.347 73.09% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 226 0.0055 0.81 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.2 23 0.0109 2.12 Shallow Concentrated Flow, B-C Paved Kv= 20.3 fps 3.5 149 0.0104 0.71 Shallow Concentrated Flow, C-D Short Grass Pasture Kv= 7.0 fps 8.3 398 Total Subcatchment Sc 1D: Post SN-1 Runoff Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)3 2 1 0 NRCC 24-hr A 5-Year Rainfall=2.80" Runoff Area=1.843 ac Runoff Volume=0.188 af Runoff Depth=1.22" Flow Length=398' Tc=8.3 min CN=82 3.16 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 66HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 2A: Post SN-2 Runoff = 0.80 cfs @ 12.78 hrs, Volume= 0.144 af, Depth= 0.42" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 5-Year Rainfall=2.80" Area (ac) CN Description * 2.275 39 Pasture/Grassland/Range, Good HSG A 1.848 98 Paved parking, HSG A 4.123 65 Weighted Average 2.275 55.18% Pervious Area 1.848 44.82% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 27.5 94 0.0156 0.06 Sheet Flow, A-B Grass: Bermuda n= 0.410 P2= 2.25" 17.0 248 0.0012 0.24 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 44.5 342 Total Subcatchment Sc 2A: Post SN-2 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 NRCC 24-hr A 5-Year Rainfall=2.80" Runoff Area=4.123 ac Runoff Volume=0.144 af Runoff Depth=0.42" Flow Length=342' Tc=44.5 min CN=65 0.80 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 67HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 2B: Post SN-2 Runoff = 1.52 cfs @ 12.11 hrs, Volume= 0.079 af, Depth= 1.16" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 5-Year Rainfall=2.80" Area (ac) CN Description 0.230 39 >75% Grass cover, Good, HSG A 0.582 98 Paved parking, HSG A 0.812 81 Weighted Average 0.230 28.33% Pervious Area 0.582 71.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.8 46 0.0165 0.91 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 3.5 173 0.0142 0.83 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 4.3 219 Total Subcatchment Sc 2B: Post SN-2 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 5-Year Rainfall=2.80" Runoff Area=0.812 ac Runoff Volume=0.079 af Runoff Depth=1.16" Flow Length=219' Tc=4.3 min CN=81 1.52 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 68HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 3: EG Outside 3 Runoff = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 5-Year Rainfall=2.80" Subcatchment Sc 3: EG Outside 3 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 5-Year Rainfall=2.80" 0.00 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 69HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 4: Towards HTA RON Runoff = 1.82 cfs @ 12.10 hrs, Volume= 0.108 af, Depth= 2.57" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 5-Year Rainfall=2.80" Area (sf) CN Description 0 39 >75% Grass cover, Good, HSG A 21,977 98 Paved parking, HSG A 21,977 98 Weighted Average 21,977 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.3 134 0.0024 0.52 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" Subcatchment Sc 4: Towards HTA RON Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 NRCC 24-hr A 5-Year Rainfall=2.80" Runoff Area=21,977 sf Runoff Volume=0.108 af Runoff Depth=2.57" Flow Length=134' Slope=0.0024 '/' Tc=4.3 min CN=98 1.82 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 70HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1: CB1 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 1.22" for 5-Year event Inflow = 3.16 cfs @ 12.16 hrs, Volume= 0.188 af Outflow = 3.16 cfs @ 12.16 hrs, Volume= 0.188 af, Atten= 0%, Lag= 0.0 min Primary = 3.16 cfs @ 12.16 hrs, Volume= 0.188 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 325.56' @ 12.16 hrs Flood Elev= 329.76' Device Routing Invert Outlet Devices #1 Primary 324.60'18.0" Round RCP_Round 18" L= 297.2' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 324.60' / 323.20' S= 0.0047 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf Primary OutFlow Max=3.09 cfs @ 12.16 hrs HW=325.55' (Free Discharge) 1=RCP_Round 18" (Inlet Controls 3.09 cfs @ 2.62 fps) Pond 1: CB1 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)3 2 1 0 Inflow Area=1.843 ac Peak Elev=325.56' 18.0" Round Culvert n=0.012 L=297.2' S=0.0047 '/' 3.16 cfs3.16 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 71HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1A P: Proposed Infiltration Inflow Area = 2.986 ac, 66.68% Impervious, Inflow Depth = 0.74" for 5-Year event Inflow = 3.81 cfs @ 12.17 hrs, Volume= 0.184 af Outflow = 0.96 cfs @ 12.15 hrs, Volume= 0.184 af, Atten= 75%, Lag= 0.0 min Discarded = 0.96 cfs @ 12.15 hrs, Volume= 0.184 af Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 325.29' @ 12.58 hrs Surf.Area= 3,029 sf Storage= 2,447 cf Plug-Flow detention time= 20.5 min calculated for 0.184 af (100% of inflow) Center-of-Mass det. time= 20.4 min ( 800.4 - 779.9 ) Volume Invert Avail.Storage Storage Description #1A 323.97' 2,125 cf 44.83'W x 67.28'L x 2.33'H Field A 7,038 cf Overall - 1,725 cf Embedded = 5,313 cf x 40.0% Voids #2A 324.47' 1,725 cf ADS_StormTech SC-310 +Cap x 117 Inside #1 Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap 117 Chambers in 13 Rows #3 324.47' 57 cf 4.00'D x 4.50'H Vertical Cone/Cylinder #4 328.90' 1,666 cf Custom Stage Data (Prismatic) Listed below (Recalc) 5,572 cf Total Available Storage Storage Group A created with Chamber Wizard Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 328.90 74 0 0 329.00 321 20 20 329.10 764 54 74 329.50 7,194 1,592 1,666 Device Routing Invert Outlet Devices #1 Discarded 323.97'13.730 in/hr Exfiltration over Horizontal area #2 Secondary 329.15'9.7" x 2.0" Horiz. Orifice/Grate X 2.00 columns X 10 rows C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.96 cfs @ 12.15 hrs HW=324.55' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.96 cfs) Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=323.97' (Free Discharge) 2=Orifice/Grate ( Controls 0.00 cfs) NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 72HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 1A P: Proposed Infiltration - Chamber Wizard Field A Chamber Model = ADS_StormTech SC-310 +Cap (ADS StormTech® SC-310 with cap length) Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap 34.0" Wide + 6.0" Spacing = 40.0" C-C Row Spacing 9 Chambers/Row x 7.12' Long +0.60' Cap Length x 2 = 65.28' Row Length +12.0" End Stone x 2 = 67.28' Base Length 13 Rows x 34.0" Wide + 6.0" Spacing x 12 + 12.0" Side Stone x 2 = 44.83' Base Width 6.0" Stone Base + 16.0" Chamber Height + 6.0" Stone Cover = 2.33' Field Height 117 Chambers x 14.7 cf = 1,724.8 cf Chamber Storage 7,038.2 cf Field - 1,724.8 cf Chambers = 5,313.4 cf Stone x 40.0% Voids = 2,125.4 cf Stone Storage Chamber Storage + Stone Storage = 3,850.2 cf = 0.088 af Overall Storage Efficiency = 54.7% Overall System Size = 67.28' x 44.83' x 2.33' 117 Chambers 260.7 cy Field 196.8 cy Stone NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 73HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 1A P: Proposed Infiltration Inflow Outflow Discarded Secondary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 Inflow Area=2.986 ac Peak Elev=325.29' Storage=2,447 cf 3.81 cfs 0.96 cfs0.96 cfs 0.00 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 74HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2: CB2 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 1.22" for 5-Year event Inflow = 3.16 cfs @ 12.16 hrs, Volume= 0.188 af Outflow = 3.16 cfs @ 12.16 hrs, Volume= 0.188 af, Atten= 0%, Lag= 0.0 min Primary = 3.16 cfs @ 12.16 hrs, Volume= 0.188 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 324.06' @ 12.16 hrs Flood Elev= 331.03' Device Routing Invert Outlet Devices #1 Primary 323.10'18.0" Round RCP_Round 18" L= 305.2' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 323.10' / 321.80' S= 0.0043 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf Primary OutFlow Max=3.09 cfs @ 12.16 hrs HW=324.05' (Free Discharge) 1=RCP_Round 18" (Inlet Controls 3.09 cfs @ 2.62 fps) Pond 2: CB2 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)3 2 1 0 Inflow Area=1.843 ac Peak Elev=324.06' 18.0" Round Culvert n=0.012 L=305.2' S=0.0043 '/' 3.16 cfs3.16 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 75HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2P: Existing Infiltration Inflow Area = 4.123 ac, 44.82% Impervious, Inflow Depth = 0.42" for 5-Year event Inflow = 0.80 cfs @ 12.78 hrs, Volume= 0.144 af Outflow = 0.80 cfs @ 12.78 hrs, Volume= 0.144 af, Atten= 0%, Lag= 0.0 min Discarded = 0.80 cfs @ 12.78 hrs, Volume= 0.144 af Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 319.80' @ 12.78 hrs Surf.Area= 0.001 ac Storage= 0.000 af Flood Elev= 327.97' Storage= 0.087 af Plug-Flow detention time= 0.0 min calculated for 0.143 af (100% of inflow) Center-of-Mass det. time= 0.0 min ( 924.6 - 924.6 ) Volume Invert Avail.Storage Storage Description #1 320.00' 0.050 af 24.0" Round CMP_Round 24" x 18 L= 38.2' #2 319.90' 0.020 af 24.0" Round CMP_Round 24" L= 270.7' #3 319.80' 0.018 af 24.0" Round CMP_Round 24" L= 246.0' 0.087 af Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 319.80'13.24 cfs Exfiltration when above 319.80' #2 Secondary 322.98'24.0" Round RCP_Round 24" L= 75.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 322.98' / 322.15' S= 0.0111 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 3.14 sf Discarded OutFlow Max=13.24 cfs @ 12.78 hrs HW=319.80' (Free Discharge) 1=Exfiltration (Exfiltration Controls 13.24 cfs) Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=319.80' (Free Discharge) 2=RCP_Round 24" ( Controls 0.00 cfs) NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 76HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 2P: Existing Infiltration Inflow Outflow Discarded Secondary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=4.123 ac Peak Elev=319.80' Storage=0.000 af 0.80 cfs0.80 cfs0.80 cfs 0.00 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 77HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3: CB3 Inflow Area = 3.929 ac, 69.48% Impervious, Inflow Depth = 1.11" for 5-Year event Inflow = 6.08 cfs @ 12.13 hrs, Volume= 0.363 af Outflow = 6.08 cfs @ 12.13 hrs, Volume= 0.363 af, Atten= 0%, Lag= 0.0 min Primary = 6.08 cfs @ 12.13 hrs, Volume= 0.363 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 322.82' @ 12.13 hrs Flood Elev= 329.13' Device Routing Invert Outlet Devices #1 Primary 321.70'36.0" Round RCP_Round 36" L= 228.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 321.70' / 321.00' S= 0.0031 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 7.07 sf Primary OutFlow Max=5.89 cfs @ 12.13 hrs HW=322.80' (Free Discharge) 1=RCP_Round 36" (Barrel Controls 5.89 cfs @ 3.74 fps) Pond 3: CB3 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)6 5 4 3 2 1 0 Inflow Area=3.929 ac Peak Elev=322.82' 36.0" Round Culvert n=0.012 L=228.0' S=0.0031 '/' 6.08 cfs6.08 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 78HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3P: Existing Infiltration Inflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 321.10' @ 1.00 hrs Storage= 0.000 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no inflow) Volume Invert Avail.Storage Storage Description #1 321.10' 0.099 af 36.0" Round CMP_Round 36" x 3 L= 203.0' Device Routing Invert Outlet Devices #1 Secondary 323.20'15.0" Round CMP_Round 15" L= 18.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 323.20' / 323.10' S= 0.0056 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=321.10' (Free Discharge) 1=CMP_Round 15" ( Controls 0.00 cfs) Pond 3P: Existing Infiltration Inflow Secondary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Peak Elev=321.10' Storage=0.000 af 15.0" Round Culvert n=0.012 L=18.0' S=0.0056 '/' 0.00 cfs0.00 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 79HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 4: CB4 Inflow Area = 1.888 ac, 64.35% Impervious, Inflow Depth = 0.93" for 5-Year event Inflow = 2.75 cfs @ 12.12 hrs, Volume= 0.147 af Outflow = 2.75 cfs @ 12.12 hrs, Volume= 0.147 af, Atten= 0%, Lag= 0.0 min Primary = 2.75 cfs @ 12.12 hrs, Volume= 0.147 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 323.18' @ 12.12 hrs Flood Elev= 328.47' Device Routing Invert Outlet Devices #1 Primary 322.20'15.0" Round RCP_Round 15" L= 47.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 322.20' / 321.80' S= 0.0085 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Primary OutFlow Max=2.63 cfs @ 12.12 hrs HW=323.15' (Free Discharge) 1=RCP_Round 15" (Inlet Controls 2.63 cfs @ 2.62 fps) Pond 4: CB4 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)3 2 1 0 Inflow Area=1.888 ac Peak Elev=323.18' 15.0" Round Culvert n=0.012 L=47.0' S=0.0085 '/' 2.75 cfs2.75 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 80HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 5: CB5 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 1.22" for 5-Year event Inflow = 3.16 cfs @ 12.16 hrs, Volume= 0.188 af Outflow = 3.16 cfs @ 12.16 hrs, Volume= 0.188 af, Atten= 0%, Lag= 0.0 min Primary = 3.16 cfs @ 12.16 hrs, Volume= 0.188 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 326.50' @ 12.16 hrs Device Routing Invert Outlet Devices #1 Primary 324.88'12.0" Round RCP_Round 12" L= 37.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 324.88' / 324.70' S= 0.0049 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf Primary OutFlow Max=3.10 cfs @ 12.16 hrs HW=326.45' (Free Discharge) 1=RCP_Round 12" (Inlet Controls 3.10 cfs @ 3.94 fps) Pond 5: CB5 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)3 2 1 0 Inflow Area=1.843 ac Peak Elev=326.50' 12.0" Round Culvert n=0.012 L=37.0' S=0.0049 '/' 3.16 cfs3.16 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 81HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond IR: CB6 Inflow Area = 2.986 ac, 66.68% Impervious, Inflow Depth = 0.99" for 5-Year event Inflow = 3.83 cfs @ 12.18 hrs, Volume= 0.246 af Outflow = 3.87 cfs @ 12.17 hrs, Volume= 0.246 af, Atten= 0%, Lag= 0.0 min Discarded = 0.06 cfs @ 12.10 hrs, Volume= 0.062 af Primary = 3.81 cfs @ 12.17 hrs, Volume= 0.184 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 326.82' @ 12.17 hrs Surf.Area= 0.000 ac Storage= 0.005 af Flood Elev= 330.00' Storage= 0.005 af Plug-Flow detention time= 12.7 min calculated for 0.246 af (100% of inflow) Center-of-Mass det. time= 12.8 min ( 857.4 - 844.7 ) Volume Invert Avail.Storage Storage Description #1 324.85' 0.005 af 18.0" Round RCP_Round 18" L= 117.2' S= 0.0050 '/' Device Routing Invert Outlet Devices #1 Discarded 324.85'13.730 in/hr Exfiltration over Horizontal area #2 Primary 326.35'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.06 cfs @ 12.10 hrs HW=326.72' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.06 cfs) Primary OutFlow Max=3.68 cfs @ 12.17 hrs HW=326.81' (Free Discharge) 2=Broad-Crested Rectangular Weir (Weir Controls 3.68 cfs @ 2.01 fps) NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 82HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond IR: CB6 Inflow Outflow Discarded Primary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 Inflow Area=2.986 ac Peak Elev=326.82' Storage=0.005 af 3.83 cfs3.87 cfs 0.06 cfs 3.81 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 83HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 1: SN 1 Inflow Area = 3.929 ac, 69.48% Impervious, Inflow Depth = 1.11" for 5-Year event Inflow = 6.08 cfs @ 12.13 hrs, Volume= 0.363 af Primary = 6.08 cfs @ 12.13 hrs, Volume= 0.363 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 1: SN 1 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)6 5 4 3 2 1 0 Inflow Area=3.929 ac 6.08 cfs6.08 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 84HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 2: SN 2 Inflow Area = 0.812 ac, 71.67% Impervious, Inflow Depth = 1.16" for 5-Year event Inflow = 1.52 cfs @ 12.11 hrs, Volume= 0.079 af Primary = 1.52 cfs @ 12.11 hrs, Volume= 0.079 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 2: SN 2 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Inflow Area=0.812 ac 1.52 cfs1.52 cfs NRCC 24-hr A 5-Year Rainfall=2.80"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 85HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 3: HTA's Permit Inflow Area = 0.505 ac,100.00% Impervious, Inflow Depth = 2.57" for 5-Year event Inflow = 1.82 cfs @ 12.10 hrs, Volume= 0.108 af Primary = 1.82 cfs @ 12.10 hrs, Volume= 0.108 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 3: HTA's Permit InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 Inflow Area=0.505 ac 1.82 cfs1.82 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 86HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Time span=1.00-72.00 hrs, dt=0.05 hrs, 1421 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=0.198 ac 84.85% Impervious Runoff Depth=2.14"Subcatchment Sc 1A: Existing to CB3 Flow Length=156' Tc=2.4 min CN=89 Runoff=0.73 cfs 0.035 af Runoff Area=1.888 ac 64.35% Impervious Runoff Depth=1.25"Subcatchment Sc 1B: Existing to CB 4 Flow Length=269' Tc=4.6 min CN=77 Runoff=3.74 cfs 0.197 af Runoff Area=2.986 ac 66.68% Impervious Runoff Depth=1.32"Subcatchment Sc 1C: Post SN-1 Flow Length=404' Tc=9.4 min CN=78 Runoff=5.21 cfs 0.328 af Runoff Area=1.843 ac 73.09% Impervious Runoff Depth=1.59"Subcatchment Sc 1D: Post SN-1 Flow Length=398' Tc=8.3 min CN=82 Runoff=4.11 cfs 0.244 af Runoff Area=4.123 ac 44.82% Impervious Runoff Depth=0.63"Subcatchment Sc 2A: Post SN-2 Flow Length=342' Tc=44.5 min CN=65 Runoff=1.34 cfs 0.216 af Runoff Area=0.812 ac 71.67% Impervious Runoff Depth=1.52"Subcatchment Sc 2B: Post SN-2 Flow Length=219' Tc=4.3 min CN=81 Runoff=1.99 cfs 0.103 af Subcatchment Sc 3: EG Outside 3 Runoff=0.00 cfs 0.000 af Runoff Area=21,977 sf 100.00% Impervious Runoff Depth=3.03"Subcatchment Sc 4: Towards HTA RON Flow Length=134' Slope=0.0024 '/' Tc=4.3 min CN=98 Runoff=2.12 cfs 0.127 af Peak Elev=325.74' Inflow=4.11 cfs 0.244 afPond 1: CB1 18.0" Round Culvert n=0.012 L=297.2' S=0.0047 '/' Outflow=4.11 cfs 0.244 af Peak Elev=329.11' Storage=3,992 cf Inflow=5.16 cfs 0.263 afPond 1A P: Proposed Infiltration Discarded=1.28 cfs 0.263 af Secondary=0.00 cfs 0.000 af Outflow=1.28 cfs 0.263 af Peak Elev=324.24' Inflow=4.11 cfs 0.244 afPond 2: CB2 18.0" Round Culvert n=0.012 L=305.2' S=0.0043 '/' Outflow=4.11 cfs 0.244 af Peak Elev=319.81' Storage=0.000 af Inflow=1.34 cfs 0.216 afPond 2P: Existing Infiltration Discarded=1.34 cfs 0.216 af Secondary=0.00 cfs 0.000 af Outflow=1.34 cfs 0.216 af Peak Elev=323.00' Inflow=8.03 cfs 0.476 afPond 3: CB3 36.0" Round Culvert n=0.012 L=228.0' S=0.0031 '/' Outflow=8.03 cfs 0.476 af Peak Elev=321.10' Storage=0.000 af Inflow=0.00 cfs 0.000 afPond 3P: Existing Infiltration 15.0" Round Culvert n=0.012 L=18.0' S=0.0056 '/' Outflow=0.00 cfs 0.000 af Peak Elev=323.46' Inflow=3.74 cfs 0.197 afPond 4: CB4 15.0" Round Culvert n=0.012 L=47.0' S=0.0085 '/' Outflow=3.74 cfs 0.197 af Peak Elev=327.27' Inflow=4.11 cfs 0.244 afPond 5: CB5 12.0" Round Culvert n=0.012 L=37.0' S=0.0049 '/' Outflow=4.11 cfs 0.244 af NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 87HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Peak Elev=326.91' Storage=0.005 af Inflow=5.21 cfs 0.328 afPond IR: CB6 Discarded=0.06 cfs 0.065 af Primary=5.16 cfs 0.263 af Outflow=5.22 cfs 0.328 af Inflow=8.03 cfs 0.476 afLink SN 1: SN 1 Primary=8.03 cfs 0.476 af Inflow=1.99 cfs 0.103 afLink SN 2: SN 2 Primary=1.99 cfs 0.103 af Inflow=2.12 cfs 0.127 afLink SN 3: HTA's Permit Primary=2.12 cfs 0.127 af Total Runoff Area = 12.355 ac Runoff Volume = 1.250 af Average Runoff Depth = 1.21" 38.03% Pervious = 4.699 ac 61.97% Impervious = 7.656 ac NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 88HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1A: Existing to CB3 Runoff = 0.73 cfs @ 12.09 hrs, Volume= 0.035 af, Depth= 2.14" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 10-Year Rainfall=3.26" Area (ac) CN Description 0.030 39 >75% Grass cover, Good, HSG A 0.168 98 Water Surface, HSG A 0.198 89 Weighted Average 0.030 15.15% Pervious Area 0.168 84.85% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.0 123 0.0127 1.00 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.4 33 0.0485 1.54 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 2.4 156 Total Subcatchment Sc 1A: Existing to CB3 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 NRCC 24-hr A 10-Year Rainfall=3.26" Runoff Area=0.198 ac Runoff Volume=0.035 af Runoff Depth=2.14" Flow Length=156' Tc=2.4 min CN=89 0.73 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 89HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1B: Existing to CB 4 Runoff = 3.74 cfs @ 12.12 hrs, Volume= 0.197 af, Depth= 1.25" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 10-Year Rainfall=3.26" Area (ac) CN Description 0.673 39 >75% Grass cover, Good, HSG A 1.215 98 Paved parking, HSG A 1.888 77 Weighted Average 0.673 35.65% Pervious Area 1.215 64.35% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.3 66 0.0105 0.82 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 3.3 203 0.0212 1.02 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 4.6 269 Total Subcatchment Sc 1B: Existing to CB 4 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 NRCC 24-hr A 10-Year Rainfall=3.26" Runoff Area=1.888 ac Runoff Volume=0.197 af Runoff Depth=1.25" Flow Length=269' Tc=4.6 min CN=77 3.74 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 90HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1C: Post SN-1 Runoff = 5.21 cfs @ 12.17 hrs, Volume= 0.328 af, Depth= 1.32" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 10-Year Rainfall=3.26" Area (ac) CN Description 0.995 39 >75% Grass cover, Good, HSG A 1.991 98 Paved parking, HSG A 2.986 78 Weighted Average 0.995 33.32% Pervious Area 1.991 66.68% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 219 0.0054 0.80 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.3 24 0.0046 1.38 Shallow Concentrated Flow, B-C Paved Kv= 20.3 fps 4.5 161 0.0074 0.60 Shallow Concentrated Flow, C-D Short Grass Pasture Kv= 7.0 fps 9.4 404 Total Subcatchment Sc 1C: Post SN-1 Runoff Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)5 4 3 2 1 0 NRCC 24-hr A 10-Year Rainfall=3.26" Runoff Area=2.986 ac Runoff Volume=0.328 af Runoff Depth=1.32" Flow Length=404' Tc=9.4 min CN=78 5.21 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 91HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1D: Post SN-1 Runoff = 4.11 cfs @ 12.16 hrs, Volume= 0.244 af, Depth= 1.59" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 10-Year Rainfall=3.26" Area (ac) CN Description 0.496 39 >75% Grass cover, Good, HSG A 1.347 98 Paved parking, HSG A 1.843 82 Weighted Average 0.496 26.91% Pervious Area 1.347 73.09% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 226 0.0055 0.81 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.2 23 0.0109 2.12 Shallow Concentrated Flow, B-C Paved Kv= 20.3 fps 3.5 149 0.0104 0.71 Shallow Concentrated Flow, C-D Short Grass Pasture Kv= 7.0 fps 8.3 398 Total Subcatchment Sc 1D: Post SN-1 Runoff Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 NRCC 24-hr A 10-Year Rainfall=3.26" Runoff Area=1.843 ac Runoff Volume=0.244 af Runoff Depth=1.59" Flow Length=398' Tc=8.3 min CN=82 4.11 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 92HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 2A: Post SN-2 Runoff = 1.34 cfs @ 12.73 hrs, Volume= 0.216 af, Depth= 0.63" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 10-Year Rainfall=3.26" Area (ac) CN Description * 2.275 39 Pasture/Grassland/Range, Good HSG A 1.848 98 Paved parking, HSG A 4.123 65 Weighted Average 2.275 55.18% Pervious Area 1.848 44.82% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 27.5 94 0.0156 0.06 Sheet Flow, A-B Grass: Bermuda n= 0.410 P2= 2.25" 17.0 248 0.0012 0.24 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 44.5 342 Total Subcatchment Sc 2A: Post SN-2 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 10-Year Rainfall=3.26" Runoff Area=4.123 ac Runoff Volume=0.216 af Runoff Depth=0.63" Flow Length=342' Tc=44.5 min CN=65 1.34 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 93HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 2B: Post SN-2 Runoff = 1.99 cfs @ 12.11 hrs, Volume= 0.103 af, Depth= 1.52" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 10-Year Rainfall=3.26" Area (ac) CN Description 0.230 39 >75% Grass cover, Good, HSG A 0.582 98 Paved parking, HSG A 0.812 81 Weighted Average 0.230 28.33% Pervious Area 0.582 71.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.8 46 0.0165 0.91 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 3.5 173 0.0142 0.83 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 4.3 219 Total Subcatchment Sc 2B: Post SN-2 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 NRCC 24-hr A 10-Year Rainfall=3.26" Runoff Area=0.812 ac Runoff Volume=0.103 af Runoff Depth=1.52" Flow Length=219' Tc=4.3 min CN=81 1.99 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 94HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 3: EG Outside 3 Runoff = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 10-Year Rainfall=3.26" Subcatchment Sc 3: EG Outside 3 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 10-Year Rainfall=3.26" 0.00 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 95HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 4: Towards HTA RON Runoff = 2.12 cfs @ 12.10 hrs, Volume= 0.127 af, Depth= 3.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 10-Year Rainfall=3.26" Area (sf) CN Description 0 39 >75% Grass cover, Good, HSG A 21,977 98 Paved parking, HSG A 21,977 98 Weighted Average 21,977 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.3 134 0.0024 0.52 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" Subcatchment Sc 4: Towards HTA RON Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 NRCC 24-hr A 10-Year Rainfall=3.26" Runoff Area=21,977 sf Runoff Volume=0.127 af Runoff Depth=3.03" Flow Length=134' Slope=0.0024 '/' Tc=4.3 min CN=98 2.12 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 96HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1: CB1 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 1.59" for 10-Year event Inflow = 4.11 cfs @ 12.16 hrs, Volume= 0.244 af Outflow = 4.11 cfs @ 12.16 hrs, Volume= 0.244 af, Atten= 0%, Lag= 0.0 min Primary = 4.11 cfs @ 12.16 hrs, Volume= 0.244 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 325.74' @ 12.16 hrs Flood Elev= 329.76' Device Routing Invert Outlet Devices #1 Primary 324.60'18.0" Round RCP_Round 18" L= 297.2' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 324.60' / 323.20' S= 0.0047 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf Primary OutFlow Max=4.03 cfs @ 12.16 hrs HW=325.72' (Free Discharge) 1=RCP_Round 18" (Inlet Controls 4.03 cfs @ 2.85 fps) Pond 1: CB1 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 Inflow Area=1.843 ac Peak Elev=325.74' 18.0" Round Culvert n=0.012 L=297.2' S=0.0047 '/' 4.11 cfs4.11 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 97HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1A P: Proposed Infiltration Inflow Area = 2.986 ac, 66.68% Impervious, Inflow Depth = 1.06" for 10-Year event Inflow = 5.16 cfs @ 12.17 hrs, Volume= 0.263 af Outflow = 1.28 cfs @ 12.57 hrs, Volume= 0.263 af, Atten= 75%, Lag= 24.1 min Discarded = 1.28 cfs @ 12.57 hrs, Volume= 0.263 af Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 329.11' @ 12.55 hrs Surf.Area= 3,998 sf Storage= 3,992 cf Plug-Flow detention time= 32.9 min calculated for 0.263 af (100% of inflow) Center-of-Mass det. time= 32.9 min ( 822.6 - 789.6 ) Volume Invert Avail.Storage Storage Description #1A 323.97' 2,125 cf 44.83'W x 67.28'L x 2.33'H Field A 7,038 cf Overall - 1,725 cf Embedded = 5,313 cf x 40.0% Voids #2A 324.47' 1,725 cf ADS_StormTech SC-310 +Cap x 117 Inside #1 Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap 117 Chambers in 13 Rows #3 324.47' 57 cf 4.00'D x 4.50'H Vertical Cone/Cylinder #4 328.90' 1,666 cf Custom Stage Data (Prismatic) Listed below (Recalc) 5,572 cf Total Available Storage Storage Group A created with Chamber Wizard Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 328.90 74 0 0 329.00 321 20 20 329.10 764 54 74 329.50 7,194 1,592 1,666 Device Routing Invert Outlet Devices #1 Discarded 323.97'13.730 in/hr Exfiltration over Horizontal area #2 Secondary 329.15'9.7" x 2.0" Horiz. Orifice/Grate X 2.00 columns X 10 rows C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=1.27 cfs @ 12.57 hrs HW=329.11' (Free Discharge) 1=Exfiltration (Exfiltration Controls 1.27 cfs) Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=323.97' (Free Discharge) 2=Orifice/Grate ( Controls 0.00 cfs) NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 98HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 1A P: Proposed Infiltration - Chamber Wizard Field A Chamber Model = ADS_StormTech SC-310 +Cap (ADS StormTech® SC-310 with cap length) Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap 34.0" Wide + 6.0" Spacing = 40.0" C-C Row Spacing 9 Chambers/Row x 7.12' Long +0.60' Cap Length x 2 = 65.28' Row Length +12.0" End Stone x 2 = 67.28' Base Length 13 Rows x 34.0" Wide + 6.0" Spacing x 12 + 12.0" Side Stone x 2 = 44.83' Base Width 6.0" Stone Base + 16.0" Chamber Height + 6.0" Stone Cover = 2.33' Field Height 117 Chambers x 14.7 cf = 1,724.8 cf Chamber Storage 7,038.2 cf Field - 1,724.8 cf Chambers = 5,313.4 cf Stone x 40.0% Voids = 2,125.4 cf Stone Storage Chamber Storage + Stone Storage = 3,850.2 cf = 0.088 af Overall Storage Efficiency = 54.7% Overall System Size = 67.28' x 44.83' x 2.33' 117 Chambers 260.7 cy Field 196.8 cy Stone NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 99HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 1A P: Proposed Infiltration Inflow Outflow Discarded Secondary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)5 4 3 2 1 0 Inflow Area=2.986 ac Peak Elev=329.11' Storage=3,992 cf 5.16 cfs 1.28 cfs1.28 cfs 0.00 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 100HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2: CB2 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 1.59" for 10-Year event Inflow = 4.11 cfs @ 12.16 hrs, Volume= 0.244 af Outflow = 4.11 cfs @ 12.16 hrs, Volume= 0.244 af, Atten= 0%, Lag= 0.0 min Primary = 4.11 cfs @ 12.16 hrs, Volume= 0.244 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 324.24' @ 12.16 hrs Flood Elev= 331.03' Device Routing Invert Outlet Devices #1 Primary 323.10'18.0" Round RCP_Round 18" L= 305.2' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 323.10' / 321.80' S= 0.0043 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf Primary OutFlow Max=4.03 cfs @ 12.16 hrs HW=324.22' (Free Discharge) 1=RCP_Round 18" (Inlet Controls 4.03 cfs @ 2.85 fps) Pond 2: CB2 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 Inflow Area=1.843 ac Peak Elev=324.24' 18.0" Round Culvert n=0.012 L=305.2' S=0.0043 '/' 4.11 cfs4.11 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 101HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2P: Existing Infiltration Inflow Area = 4.123 ac, 44.82% Impervious, Inflow Depth = 0.63" for 10-Year event Inflow = 1.34 cfs @ 12.73 hrs, Volume= 0.216 af Outflow = 1.34 cfs @ 12.73 hrs, Volume= 0.216 af, Atten= 0%, Lag= 0.0 min Discarded = 1.34 cfs @ 12.73 hrs, Volume= 0.216 af Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 319.81' @ 12.73 hrs Surf.Area= 0.001 ac Storage= 0.000 af Flood Elev= 327.97' Storage= 0.087 af Plug-Flow detention time= 0.0 min calculated for 0.216 af (100% of inflow) Center-of-Mass det. time= 0.0 min ( 909.8 - 909.8 ) Volume Invert Avail.Storage Storage Description #1 320.00' 0.050 af 24.0" Round CMP_Round 24" x 18 L= 38.2' #2 319.90' 0.020 af 24.0" Round CMP_Round 24" L= 270.7' #3 319.80' 0.018 af 24.0" Round CMP_Round 24" L= 246.0' 0.087 af Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 319.80'13.24 cfs Exfiltration when above 319.80' #2 Secondary 322.98'24.0" Round RCP_Round 24" L= 75.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 322.98' / 322.15' S= 0.0111 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 3.14 sf Discarded OutFlow Max=13.24 cfs @ 12.73 hrs HW=319.81' (Free Discharge) 1=Exfiltration (Exfiltration Controls 13.24 cfs) Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=319.80' (Free Discharge) 2=RCP_Round 24" ( Controls 0.00 cfs) NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 102HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 2P: Existing Infiltration Inflow Outflow Discarded Secondary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Inflow Area=4.123 ac Peak Elev=319.81' Storage=0.000 af 1.34 cfs1.34 cfs1.34 cfs 0.00 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 103HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3: CB3 Inflow Area = 3.929 ac, 69.48% Impervious, Inflow Depth = 1.45" for 10-Year event Inflow = 8.03 cfs @ 12.13 hrs, Volume= 0.476 af Outflow = 8.03 cfs @ 12.13 hrs, Volume= 0.476 af, Atten= 0%, Lag= 0.0 min Primary = 8.03 cfs @ 12.13 hrs, Volume= 0.476 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 323.00' @ 12.13 hrs Flood Elev= 329.13' Device Routing Invert Outlet Devices #1 Primary 321.70'36.0" Round RCP_Round 36" L= 228.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 321.70' / 321.00' S= 0.0031 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 7.07 sf Primary OutFlow Max=7.77 cfs @ 12.13 hrs HW=322.98' (Free Discharge) 1=RCP_Round 36" (Barrel Controls 7.77 cfs @ 4.00 fps) Pond 3: CB3 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=3.929 ac Peak Elev=323.00' 36.0" Round Culvert n=0.012 L=228.0' S=0.0031 '/' 8.03 cfs8.03 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 104HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3P: Existing Infiltration Inflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 321.10' @ 1.00 hrs Storage= 0.000 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no inflow) Volume Invert Avail.Storage Storage Description #1 321.10' 0.099 af 36.0" Round CMP_Round 36" x 3 L= 203.0' Device Routing Invert Outlet Devices #1 Secondary 323.20'15.0" Round CMP_Round 15" L= 18.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 323.20' / 323.10' S= 0.0056 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=321.10' (Free Discharge) 1=CMP_Round 15" ( Controls 0.00 cfs) Pond 3P: Existing Infiltration Inflow Secondary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Peak Elev=321.10' Storage=0.000 af 15.0" Round Culvert n=0.012 L=18.0' S=0.0056 '/' 0.00 cfs0.00 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 105HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 4: CB4 Inflow Area = 1.888 ac, 64.35% Impervious, Inflow Depth = 1.25" for 10-Year event Inflow = 3.74 cfs @ 12.12 hrs, Volume= 0.197 af Outflow = 3.74 cfs @ 12.12 hrs, Volume= 0.197 af, Atten= 0%, Lag= 0.0 min Primary = 3.74 cfs @ 12.12 hrs, Volume= 0.197 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 323.46' @ 12.11 hrs Flood Elev= 328.47' Device Routing Invert Outlet Devices #1 Primary 322.20'15.0" Round RCP_Round 15" L= 47.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 322.20' / 321.80' S= 0.0085 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Primary OutFlow Max=3.60 cfs @ 12.12 hrs HW=323.41' (Free Discharge) 1=RCP_Round 15" (Inlet Controls 3.60 cfs @ 2.96 fps) Pond 4: CB4 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 Inflow Area=1.888 ac Peak Elev=323.46' 15.0" Round Culvert n=0.012 L=47.0' S=0.0085 '/' 3.74 cfs3.74 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 106HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 5: CB5 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 1.59" for 10-Year event Inflow = 4.11 cfs @ 12.16 hrs, Volume= 0.244 af Outflow = 4.11 cfs @ 12.16 hrs, Volume= 0.244 af, Atten= 0%, Lag= 0.0 min Primary = 4.11 cfs @ 12.16 hrs, Volume= 0.244 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 327.27' @ 12.16 hrs Device Routing Invert Outlet Devices #1 Primary 324.88'12.0" Round RCP_Round 12" L= 37.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 324.88' / 324.70' S= 0.0049 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf Primary OutFlow Max=4.03 cfs @ 12.16 hrs HW=327.21' (Free Discharge) 1=RCP_Round 12" (Inlet Controls 4.03 cfs @ 5.14 fps) Pond 5: CB5 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 Inflow Area=1.843 ac Peak Elev=327.27' 12.0" Round Culvert n=0.012 L=37.0' S=0.0049 '/' 4.11 cfs4.11 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 107HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond IR: CB6 Inflow Area = 2.986 ac, 66.68% Impervious, Inflow Depth = 1.32" for 10-Year event Inflow = 5.21 cfs @ 12.17 hrs, Volume= 0.328 af Outflow = 5.22 cfs @ 12.17 hrs, Volume= 0.328 af, Atten= 0%, Lag= 0.0 min Discarded = 0.06 cfs @ 12.05 hrs, Volume= 0.065 af Primary = 5.16 cfs @ 12.17 hrs, Volume= 0.263 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 326.91' @ 12.17 hrs Surf.Area= 0.000 ac Storage= 0.005 af Flood Elev= 330.00' Storage= 0.005 af Plug-Flow detention time= 10.0 min calculated for 0.328 af (100% of inflow) Center-of-Mass det. time= 10.1 min ( 847.3 - 837.2 ) Volume Invert Avail.Storage Storage Description #1 324.85' 0.005 af 18.0" Round RCP_Round 18" L= 117.2' S= 0.0050 '/' Device Routing Invert Outlet Devices #1 Discarded 324.85'13.730 in/hr Exfiltration over Horizontal area #2 Primary 326.35'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.06 cfs @ 12.05 hrs HW=326.71' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.06 cfs) Primary OutFlow Max=4.99 cfs @ 12.17 hrs HW=326.90' (Free Discharge) 2=Broad-Crested Rectangular Weir (Weir Controls 4.99 cfs @ 2.26 fps) NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 108HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond IR: CB6 Inflow Outflow Discarded Primary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)5 4 3 2 1 0 Inflow Area=2.986 ac Peak Elev=326.91' Storage=0.005 af 5.21 cfs5.22 cfs 0.06 cfs 5.16 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 109HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 1: SN 1 Inflow Area = 3.929 ac, 69.48% Impervious, Inflow Depth = 1.45" for 10-Year event Inflow = 8.03 cfs @ 12.13 hrs, Volume= 0.476 af Primary = 8.03 cfs @ 12.13 hrs, Volume= 0.476 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 1: SN 1 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=3.929 ac 8.03 cfs8.03 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 110HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 2: SN 2 Inflow Area = 0.812 ac, 71.67% Impervious, Inflow Depth = 1.52" for 10-Year event Inflow = 1.99 cfs @ 12.11 hrs, Volume= 0.103 af Primary = 1.99 cfs @ 12.11 hrs, Volume= 0.103 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 2: SN 2 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 Inflow Area=0.812 ac 1.99 cfs1.99 cfs NRCC 24-hr A 10-Year Rainfall=3.26"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 111HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 3: HTA's Permit Inflow Area = 0.505 ac,100.00% Impervious, Inflow Depth = 3.03" for 10-Year event Inflow = 2.12 cfs @ 12.10 hrs, Volume= 0.127 af Primary = 2.12 cfs @ 12.10 hrs, Volume= 0.127 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 3: HTA's Permit InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 Inflow Area=0.505 ac 2.12 cfs2.12 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 112HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Time span=1.00-72.00 hrs, dt=0.05 hrs, 1421 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=0.198 ac 84.85% Impervious Runoff Depth=2.72"Subcatchment Sc 1A: Existing to CB3 Flow Length=156' Tc=2.4 min CN=89 Runoff=0.91 cfs 0.045 af Runoff Area=1.888 ac 64.35% Impervious Runoff Depth=1.73"Subcatchment Sc 1B: Existing to CB 4 Flow Length=269' Tc=4.6 min CN=77 Runoff=5.17 cfs 0.272 af Runoff Area=2.986 ac 66.68% Impervious Runoff Depth=1.80"Subcatchment Sc 1C: Post SN-1 Flow Length=404' Tc=9.4 min CN=78 Runoff=7.17 cfs 0.448 af Runoff Area=1.843 ac 73.09% Impervious Runoff Depth=2.11"Subcatchment Sc 1D: Post SN-1 Flow Length=398' Tc=8.3 min CN=82 Runoff=5.45 cfs 0.324 af Runoff Area=4.123 ac 44.82% Impervious Runoff Depth=0.97"Subcatchment Sc 2A: Post SN-2 Flow Length=342' Tc=44.5 min CN=65 Runoff=2.23 cfs 0.332 af Runoff Area=0.812 ac 71.67% Impervious Runoff Depth=2.03"Subcatchment Sc 2B: Post SN-2 Flow Length=219' Tc=4.3 min CN=81 Runoff=2.65 cfs 0.137 af Subcatchment Sc 3: EG Outside 3 Runoff=0.00 cfs 0.000 af Runoff Area=21,977 sf 100.00% Impervious Runoff Depth=3.66"Subcatchment Sc 4: Towards HTA RON Flow Length=134' Slope=0.0024 '/' Tc=4.3 min CN=98 Runoff=2.54 cfs 0.154 af Peak Elev=326.00' Inflow=5.45 cfs 0.324 afPond 1: CB1 18.0" Round Culvert n=0.012 L=297.2' S=0.0047 '/' Outflow=5.45 cfs 0.324 af Peak Elev=329.23' Storage=4,229 cf Inflow=7.11 cfs 0.381 afPond 1A P: Proposed Infiltration Discarded=1.89 cfs 0.342 af Secondary=2.97 cfs 0.038 af Outflow=4.87 cfs 0.381 af Peak Elev=324.50' Inflow=5.45 cfs 0.324 afPond 2: CB2 18.0" Round Culvert n=0.012 L=305.2' S=0.0043 '/' Outflow=5.45 cfs 0.324 af Peak Elev=319.81' Storage=0.000 af Inflow=2.23 cfs 0.332 afPond 2P: Existing Infiltration Discarded=2.23 cfs 0.332 af Secondary=0.00 cfs 0.000 af Outflow=2.23 cfs 0.332 af Peak Elev=323.23' Inflow=10.82 cfs 0.679 afPond 3: CB3 36.0" Round Culvert n=0.012 L=228.0' S=0.0031 '/' Outflow=10.82 cfs 0.679 af Peak Elev=321.10' Storage=0.000 af Inflow=0.00 cfs 0.000 afPond 3P: Existing Infiltration 15.0" Round Culvert n=0.012 L=18.0' S=0.0056 '/' Outflow=0.00 cfs 0.000 af Peak Elev=324.05' Inflow=5.17 cfs 0.310 afPond 4: CB4 15.0" Round Culvert n=0.012 L=47.0' S=0.0085 '/' Outflow=5.17 cfs 0.310 af Peak Elev=328.71' Inflow=5.45 cfs 0.324 afPond 5: CB5 12.0" Round Culvert n=0.012 L=37.0' S=0.0049 '/' Outflow=5.45 cfs 0.324 af NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 113HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Peak Elev=327.03' Storage=0.005 af Inflow=7.17 cfs 0.448 afPond IR: CB6 Discarded=0.06 cfs 0.067 af Primary=7.11 cfs 0.381 af Outflow=7.17 cfs 0.448 af Inflow=10.82 cfs 0.679 afLink SN 1: SN 1 Primary=10.82 cfs 0.679 af Inflow=2.65 cfs 0.137 afLink SN 2: SN 2 Primary=2.65 cfs 0.137 af Inflow=2.54 cfs 0.154 afLink SN 3: HTA's Permit Primary=2.54 cfs 0.154 af Total Runoff Area = 12.355 ac Runoff Volume = 1.711 af Average Runoff Depth = 1.66" 38.03% Pervious = 4.699 ac 61.97% Impervious = 7.656 ac NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 114HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1A: Existing to CB3 Runoff = 0.91 cfs @ 12.08 hrs, Volume= 0.045 af, Depth= 2.72" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 25-Year Rainfall=3.89" Area (ac) CN Description 0.030 39 >75% Grass cover, Good, HSG A 0.168 98 Water Surface, HSG A 0.198 89 Weighted Average 0.030 15.15% Pervious Area 0.168 84.85% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.0 123 0.0127 1.00 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.4 33 0.0485 1.54 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 2.4 156 Total Subcatchment Sc 1A: Existing to CB3 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 25-Year Rainfall=3.89" Runoff Area=0.198 ac Runoff Volume=0.045 af Runoff Depth=2.72" Flow Length=156' Tc=2.4 min CN=89 0.91 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 115HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1B: Existing to CB 4 Runoff = 5.17 cfs @ 12.11 hrs, Volume= 0.272 af, Depth= 1.73" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 25-Year Rainfall=3.89" Area (ac) CN Description 0.673 39 >75% Grass cover, Good, HSG A 1.215 98 Paved parking, HSG A 1.888 77 Weighted Average 0.673 35.65% Pervious Area 1.215 64.35% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.3 66 0.0105 0.82 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 3.3 203 0.0212 1.02 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 4.6 269 Total Subcatchment Sc 1B: Existing to CB 4 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)5 4 3 2 1 0 NRCC 24-hr A 25-Year Rainfall=3.89" Runoff Area=1.888 ac Runoff Volume=0.272 af Runoff Depth=1.73" Flow Length=269' Tc=4.6 min CN=77 5.17 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 116HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1C: Post SN-1 Runoff = 7.17 cfs @ 12.17 hrs, Volume= 0.448 af, Depth= 1.80" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 25-Year Rainfall=3.89" Area (ac) CN Description 0.995 39 >75% Grass cover, Good, HSG A 1.991 98 Paved parking, HSG A 2.986 78 Weighted Average 0.995 33.32% Pervious Area 1.991 66.68% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 219 0.0054 0.80 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.3 24 0.0046 1.38 Shallow Concentrated Flow, B-C Paved Kv= 20.3 fps 4.5 161 0.0074 0.60 Shallow Concentrated Flow, C-D Short Grass Pasture Kv= 7.0 fps 9.4 404 Total Subcatchment Sc 1C: Post SN-1 Runoff Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)8 7 6 5 4 3 2 1 0 NRCC 24-hr A 25-Year Rainfall=3.89" Runoff Area=2.986 ac Runoff Volume=0.448 af Runoff Depth=1.80" Flow Length=404' Tc=9.4 min CN=78 7.17 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 117HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1D: Post SN-1 Runoff = 5.45 cfs @ 12.16 hrs, Volume= 0.324 af, Depth= 2.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 25-Year Rainfall=3.89" Area (ac) CN Description 0.496 39 >75% Grass cover, Good, HSG A 1.347 98 Paved parking, HSG A 1.843 82 Weighted Average 0.496 26.91% Pervious Area 1.347 73.09% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 226 0.0055 0.81 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.2 23 0.0109 2.12 Shallow Concentrated Flow, B-C Paved Kv= 20.3 fps 3.5 149 0.0104 0.71 Shallow Concentrated Flow, C-D Short Grass Pasture Kv= 7.0 fps 8.3 398 Total Subcatchment Sc 1D: Post SN-1 Runoff Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)6 5 4 3 2 1 0 NRCC 24-hr A 25-Year Rainfall=3.89" Runoff Area=1.843 ac Runoff Volume=0.324 af Runoff Depth=2.11" Flow Length=398' Tc=8.3 min CN=82 5.45 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 118HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 2A: Post SN-2 Runoff = 2.23 cfs @ 12.70 hrs, Volume= 0.332 af, Depth= 0.97" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 25-Year Rainfall=3.89" Area (ac) CN Description * 2.275 39 Pasture/Grassland/Range, Good HSG A 1.848 98 Paved parking, HSG A 4.123 65 Weighted Average 2.275 55.18% Pervious Area 1.848 44.82% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 27.5 94 0.0156 0.06 Sheet Flow, A-B Grass: Bermuda n= 0.410 P2= 2.25" 17.0 248 0.0012 0.24 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 44.5 342 Total Subcatchment Sc 2A: Post SN-2 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 NRCC 24-hr A 25-Year Rainfall=3.89" Runoff Area=4.123 ac Runoff Volume=0.332 af Runoff Depth=0.97" Flow Length=342' Tc=44.5 min CN=65 2.23 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 119HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 2B: Post SN-2 Runoff = 2.65 cfs @ 12.11 hrs, Volume= 0.137 af, Depth= 2.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 25-Year Rainfall=3.89" Area (ac) CN Description 0.230 39 >75% Grass cover, Good, HSG A 0.582 98 Paved parking, HSG A 0.812 81 Weighted Average 0.230 28.33% Pervious Area 0.582 71.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.8 46 0.0165 0.91 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 3.5 173 0.0142 0.83 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 4.3 219 Total Subcatchment Sc 2B: Post SN-2 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 NRCC 24-hr A 25-Year Rainfall=3.89" Runoff Area=0.812 ac Runoff Volume=0.137 af Runoff Depth=2.03" Flow Length=219' Tc=4.3 min CN=81 2.65 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 120HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 3: EG Outside 3 Runoff = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 25-Year Rainfall=3.89" Subcatchment Sc 3: EG Outside 3 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 25-Year Rainfall=3.89" 0.00 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 121HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 4: Towards HTA RON Runoff = 2.54 cfs @ 12.10 hrs, Volume= 0.154 af, Depth= 3.66" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 25-Year Rainfall=3.89" Area (sf) CN Description 0 39 >75% Grass cover, Good, HSG A 21,977 98 Paved parking, HSG A 21,977 98 Weighted Average 21,977 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.3 134 0.0024 0.52 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" Subcatchment Sc 4: Towards HTA RON Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 NRCC 24-hr A 25-Year Rainfall=3.89" Runoff Area=21,977 sf Runoff Volume=0.154 af Runoff Depth=3.66" Flow Length=134' Slope=0.0024 '/' Tc=4.3 min CN=98 2.54 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 122HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1: CB1 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 2.11" for 25-Year event Inflow = 5.45 cfs @ 12.16 hrs, Volume= 0.324 af Outflow = 5.45 cfs @ 12.16 hrs, Volume= 0.324 af, Atten= 0%, Lag= 0.0 min Primary = 5.45 cfs @ 12.16 hrs, Volume= 0.324 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 326.00' @ 12.16 hrs Flood Elev= 329.76' Device Routing Invert Outlet Devices #1 Primary 324.60'18.0" Round RCP_Round 18" L= 297.2' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 324.60' / 323.20' S= 0.0047 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf Primary OutFlow Max=5.37 cfs @ 12.16 hrs HW=325.98' (Free Discharge) 1=RCP_Round 18" (Inlet Controls 5.37 cfs @ 3.16 fps) Pond 1: CB1 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)6 5 4 3 2 1 0 Inflow Area=1.843 ac Peak Elev=326.00' 18.0" Round Culvert n=0.012 L=297.2' S=0.0047 '/' 5.45 cfs5.45 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 123HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1A P: Proposed Infiltration Inflow Area = 2.986 ac, 66.68% Impervious, Inflow Depth = 1.53" for 25-Year event Inflow = 7.11 cfs @ 12.17 hrs, Volume= 0.381 af Outflow = 4.87 cfs @ 12.30 hrs, Volume= 0.381 af, Atten= 32%, Lag= 7.5 min Discarded = 1.89 cfs @ 12.30 hrs, Volume= 0.342 af Secondary = 2.97 cfs @ 12.30 hrs, Volume= 0.038 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 329.23' @ 12.30 hrs Surf.Area= 5,957 sf Storage= 4,229 cf Plug-Flow detention time= 28.0 min calculated for 0.380 af (100% of inflow) Center-of-Mass det. time= 28.0 min ( 824.6 - 796.6 ) Volume Invert Avail.Storage Storage Description #1A 323.97' 2,125 cf 44.83'W x 67.28'L x 2.33'H Field A 7,038 cf Overall - 1,725 cf Embedded = 5,313 cf x 40.0% Voids #2A 324.47' 1,725 cf ADS_StormTech SC-310 +Cap x 117 Inside #1 Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap 117 Chambers in 13 Rows #3 324.47' 57 cf 4.00'D x 4.50'H Vertical Cone/Cylinder #4 328.90' 1,666 cf Custom Stage Data (Prismatic) Listed below (Recalc) 5,572 cf Total Available Storage Storage Group A created with Chamber Wizard Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 328.90 74 0 0 329.00 321 20 20 329.10 764 54 74 329.50 7,194 1,592 1,666 Device Routing Invert Outlet Devices #1 Discarded 323.97'13.730 in/hr Exfiltration over Horizontal area #2 Secondary 329.15'9.7" x 2.0" Horiz. Orifice/Grate X 2.00 columns X 10 rows C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=1.88 cfs @ 12.30 hrs HW=329.23' (Free Discharge) 1=Exfiltration (Exfiltration Controls 1.88 cfs) Secondary OutFlow Max=3.04 cfs @ 12.30 hrs HW=329.23' (Free Discharge) 2=Orifice/Grate (Weir Controls 3.04 cfs @ 0.94 fps) NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 124HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 1A P: Proposed Infiltration - Chamber Wizard Field A Chamber Model = ADS_StormTech SC-310 +Cap (ADS StormTech® SC-310 with cap length) Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap 34.0" Wide + 6.0" Spacing = 40.0" C-C Row Spacing 9 Chambers/Row x 7.12' Long +0.60' Cap Length x 2 = 65.28' Row Length +12.0" End Stone x 2 = 67.28' Base Length 13 Rows x 34.0" Wide + 6.0" Spacing x 12 + 12.0" Side Stone x 2 = 44.83' Base Width 6.0" Stone Base + 16.0" Chamber Height + 6.0" Stone Cover = 2.33' Field Height 117 Chambers x 14.7 cf = 1,724.8 cf Chamber Storage 7,038.2 cf Field - 1,724.8 cf Chambers = 5,313.4 cf Stone x 40.0% Voids = 2,125.4 cf Stone Storage Chamber Storage + Stone Storage = 3,850.2 cf = 0.088 af Overall Storage Efficiency = 54.7% Overall System Size = 67.28' x 44.83' x 2.33' 117 Chambers 260.7 cy Field 196.8 cy Stone NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 125HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 1A P: Proposed Infiltration Inflow Outflow Discarded Secondary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=2.986 ac Peak Elev=329.23' Storage=4,229 cf 7.11 cfs 4.87 cfs 1.89 cfs 2.97 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 126HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2: CB2 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 2.11" for 25-Year event Inflow = 5.45 cfs @ 12.16 hrs, Volume= 0.324 af Outflow = 5.45 cfs @ 12.16 hrs, Volume= 0.324 af, Atten= 0%, Lag= 0.0 min Primary = 5.45 cfs @ 12.16 hrs, Volume= 0.324 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 324.50' @ 12.16 hrs Flood Elev= 331.03' Device Routing Invert Outlet Devices #1 Primary 323.10'18.0" Round RCP_Round 18" L= 305.2' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 323.10' / 321.80' S= 0.0043 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf Primary OutFlow Max=5.38 cfs @ 12.16 hrs HW=324.48' (Free Discharge) 1=RCP_Round 18" (Inlet Controls 5.38 cfs @ 3.16 fps) Pond 2: CB2 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)6 5 4 3 2 1 0 Inflow Area=1.843 ac Peak Elev=324.50' 18.0" Round Culvert n=0.012 L=305.2' S=0.0043 '/' 5.45 cfs5.45 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 127HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2P: Existing Infiltration Inflow Area = 4.123 ac, 44.82% Impervious, Inflow Depth = 0.97" for 25-Year event Inflow = 2.23 cfs @ 12.70 hrs, Volume= 0.332 af Outflow = 2.23 cfs @ 12.70 hrs, Volume= 0.332 af, Atten= 0%, Lag= 0.0 min Discarded = 2.23 cfs @ 12.70 hrs, Volume= 0.332 af Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 319.81' @ 12.70 hrs Surf.Area= 0.002 ac Storage= 0.000 af Flood Elev= 327.97' Storage= 0.087 af Plug-Flow detention time= 0.0 min calculated for 0.331 af (100% of inflow) Center-of-Mass det. time= 0.0 min ( 896.1 - 896.1 ) Volume Invert Avail.Storage Storage Description #1 320.00' 0.050 af 24.0" Round CMP_Round 24" x 18 L= 38.2' #2 319.90' 0.020 af 24.0" Round CMP_Round 24" L= 270.7' #3 319.80' 0.018 af 24.0" Round CMP_Round 24" L= 246.0' 0.087 af Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 319.80'13.24 cfs Exfiltration when above 319.80' #2 Secondary 322.98'24.0" Round RCP_Round 24" L= 75.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 322.98' / 322.15' S= 0.0111 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 3.14 sf Discarded OutFlow Max=13.24 cfs @ 12.70 hrs HW=319.81' (Free Discharge) 1=Exfiltration (Exfiltration Controls 13.24 cfs) Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=319.80' (Free Discharge) 2=RCP_Round 24" ( Controls 0.00 cfs) NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 128HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 2P: Existing Infiltration Inflow Outflow Discarded Secondary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 Inflow Area=4.123 ac Peak Elev=319.81' Storage=0.000 af 2.23 cfs2.23 cfs2.23 cfs 0.00 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 129HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3: CB3 Inflow Area = 3.929 ac, 69.48% Impervious, Inflow Depth = 2.07" for 25-Year event Inflow = 10.82 cfs @ 12.13 hrs, Volume= 0.679 af Outflow = 10.82 cfs @ 12.13 hrs, Volume= 0.679 af, Atten= 0%, Lag= 0.0 min Primary = 10.82 cfs @ 12.13 hrs, Volume= 0.679 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 323.23' @ 12.13 hrs Flood Elev= 329.13' Device Routing Invert Outlet Devices #1 Primary 321.70'36.0" Round RCP_Round 36" L= 228.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 321.70' / 321.00' S= 0.0031 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 7.07 sf Primary OutFlow Max=10.47 cfs @ 12.13 hrs HW=323.20' (Free Discharge) 1=RCP_Round 36" (Barrel Controls 10.47 cfs @ 4.30 fps) Pond 3: CB3 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=3.929 ac Peak Elev=323.23' 36.0" Round Culvert n=0.012 L=228.0' S=0.0031 '/' 10.82 cfs10.82 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 130HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3P: Existing Infiltration Inflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 321.10' @ 1.00 hrs Storage= 0.000 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no inflow) Volume Invert Avail.Storage Storage Description #1 321.10' 0.099 af 36.0" Round CMP_Round 36" x 3 L= 203.0' Device Routing Invert Outlet Devices #1 Secondary 323.20'15.0" Round CMP_Round 15" L= 18.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 323.20' / 323.10' S= 0.0056 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=321.10' (Free Discharge) 1=CMP_Round 15" ( Controls 0.00 cfs) Pond 3P: Existing Infiltration Inflow Secondary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Peak Elev=321.10' Storage=0.000 af 15.0" Round Culvert n=0.012 L=18.0' S=0.0056 '/' 0.00 cfs0.00 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 131HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 4: CB4 Inflow Area = 1.888 ac, 64.35% Impervious, Inflow Depth = 1.97" for 25-Year event Inflow = 5.17 cfs @ 12.11 hrs, Volume= 0.310 af Outflow = 5.17 cfs @ 12.11 hrs, Volume= 0.310 af, Atten= 0%, Lag= 0.0 min Primary = 5.17 cfs @ 12.11 hrs, Volume= 0.310 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 324.05' @ 12.11 hrs Flood Elev= 328.47' Device Routing Invert Outlet Devices #1 Primary 322.20'15.0" Round RCP_Round 15" L= 47.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 322.20' / 321.80' S= 0.0085 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Primary OutFlow Max=4.98 cfs @ 12.11 hrs HW=323.96' (Free Discharge) 1=RCP_Round 15" (Inlet Controls 4.98 cfs @ 4.05 fps) Pond 4: CB4 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)5 4 3 2 1 0 Inflow Area=1.888 ac Peak Elev=324.05' 15.0" Round Culvert n=0.012 L=47.0' S=0.0085 '/' 5.17 cfs5.17 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 132HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 5: CB5 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 2.11" for 25-Year event Inflow = 5.45 cfs @ 12.16 hrs, Volume= 0.324 af Outflow = 5.45 cfs @ 12.16 hrs, Volume= 0.324 af, Atten= 0%, Lag= 0.0 min Primary = 5.45 cfs @ 12.16 hrs, Volume= 0.324 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 328.71' @ 12.16 hrs Device Routing Invert Outlet Devices #1 Primary 324.88'12.0" Round RCP_Round 12" L= 37.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 324.88' / 324.70' S= 0.0049 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf Primary OutFlow Max=5.37 cfs @ 12.16 hrs HW=328.61' (Free Discharge) 1=RCP_Round 12" (Inlet Controls 5.37 cfs @ 6.84 fps) Pond 5: CB5 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)6 5 4 3 2 1 0 Inflow Area=1.843 ac Peak Elev=328.71' 12.0" Round Culvert n=0.012 L=37.0' S=0.0049 '/' 5.45 cfs5.45 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 133HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond IR: CB6 Inflow Area = 2.986 ac, 66.68% Impervious, Inflow Depth = 1.80" for 25-Year event Inflow = 7.17 cfs @ 12.17 hrs, Volume= 0.448 af Outflow = 7.17 cfs @ 12.17 hrs, Volume= 0.448 af, Atten= 0%, Lag= 0.0 min Discarded = 0.06 cfs @ 12.00 hrs, Volume= 0.067 af Primary = 7.11 cfs @ 12.17 hrs, Volume= 0.381 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 327.03' @ 12.17 hrs Storage= 0.005 af Flood Elev= 330.00' Storage= 0.005 af Plug-Flow detention time= 7.6 min calculated for 0.448 af (100% of inflow) Center-of-Mass det. time= 7.7 min ( 837.1 - 829.5 ) Volume Invert Avail.Storage Storage Description #1 324.85' 0.005 af 18.0" Round RCP_Round 18" L= 117.2' S= 0.0050 '/' Device Routing Invert Outlet Devices #1 Discarded 324.85'13.730 in/hr Exfiltration over Horizontal area #2 Primary 326.35'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.06 cfs @ 12.00 hrs HW=326.72' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.06 cfs) Primary OutFlow Max=6.89 cfs @ 12.17 hrs HW=327.02' (Free Discharge) 2=Broad-Crested Rectangular Weir (Weir Controls 6.89 cfs @ 2.58 fps) NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 134HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond IR: CB6 Inflow Outflow Discarded Primary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=2.986 ac Peak Elev=327.03' Storage=0.005 af 7.17 cfs7.17 cfs 0.06 cfs 7.11 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 135HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 1: SN 1 Inflow Area = 3.929 ac, 69.48% Impervious, Inflow Depth = 2.07" for 25-Year event Inflow = 10.82 cfs @ 12.13 hrs, Volume= 0.679 af Primary = 10.82 cfs @ 12.13 hrs, Volume= 0.679 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 1: SN 1 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=3.929 ac 10.82 cfs10.82 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 136HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 2: SN 2 Inflow Area = 0.812 ac, 71.67% Impervious, Inflow Depth = 2.03" for 25-Year event Inflow = 2.65 cfs @ 12.11 hrs, Volume= 0.137 af Primary = 2.65 cfs @ 12.11 hrs, Volume= 0.137 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 2: SN 2 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 Inflow Area=0.812 ac 2.65 cfs2.65 cfs NRCC 24-hr A 25-Year Rainfall=3.89"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 137HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 3: HTA's Permit Inflow Area = 0.505 ac,100.00% Impervious, Inflow Depth = 3.66" for 25-Year event Inflow = 2.54 cfs @ 12.10 hrs, Volume= 0.154 af Primary = 2.54 cfs @ 12.10 hrs, Volume= 0.154 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 3: HTA's Permit InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)2 1 0 Inflow Area=0.505 ac 2.54 cfs2.54 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 138HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Time span=1.00-72.00 hrs, dt=0.05 hrs, 1421 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=0.198 ac 84.85% Impervious Runoff Depth=3.17"Subcatchment Sc 1A: Existing to CB3 Flow Length=156' Tc=2.4 min CN=89 Runoff=1.05 cfs 0.052 af Runoff Area=1.888 ac 64.35% Impervious Runoff Depth=2.11"Subcatchment Sc 1B: Existing to CB 4 Flow Length=269' Tc=4.6 min CN=77 Runoff=6.31 cfs 0.331 af Runoff Area=2.986 ac 66.68% Impervious Runoff Depth=2.19"Subcatchment Sc 1C: Post SN-1 Flow Length=404' Tc=9.4 min CN=78 Runoff=8.72 cfs 0.544 af Runoff Area=1.843 ac 73.09% Impervious Runoff Depth=2.52"Subcatchment Sc 1D: Post SN-1 Flow Length=398' Tc=8.3 min CN=82 Runoff=6.50 cfs 0.387 af Runoff Area=4.123 ac 44.82% Impervious Runoff Depth=1.25"Subcatchment Sc 2A: Post SN-2 Flow Length=342' Tc=44.5 min CN=65 Runoff=3.00 cfs 0.429 af Runoff Area=0.812 ac 71.67% Impervious Runoff Depth=2.44"Subcatchment Sc 2B: Post SN-2 Flow Length=219' Tc=4.3 min CN=81 Runoff=3.17 cfs 0.165 af Subcatchment Sc 3: EG Outside 3 Runoff=0.00 cfs 0.000 af Runoff Area=21,977 sf 100.00% Impervious Runoff Depth=4.13"Subcatchment Sc 4: Towards HTA RON Flow Length=134' Slope=0.0024 '/' Tc=4.3 min CN=98 Runoff=2.86 cfs 0.174 af Peak Elev=326.29' Inflow=6.50 cfs 0.387 afPond 1: CB1 18.0" Round Culvert n=0.012 L=297.2' S=0.0047 '/' Outflow=6.50 cfs 0.387 af Peak Elev=329.30' Storage=4,452 cf Inflow=8.66 cfs 0.475 afPond 1A P: Proposed Infiltration Discarded=2.22 cfs 0.395 af Secondary=4.99 cfs 0.080 af Outflow=7.22 cfs 0.475 af Peak Elev=324.79' Inflow=6.50 cfs 0.387 afPond 2: CB2 18.0" Round Culvert n=0.012 L=305.2' S=0.0043 '/' Outflow=6.50 cfs 0.387 af Peak Elev=319.82' Storage=0.000 af Inflow=3.00 cfs 0.429 afPond 2P: Existing Infiltration Discarded=3.00 cfs 0.429 af Secondary=0.00 cfs 0.000 af Outflow=3.00 cfs 0.429 af Peak Elev=323.40' Inflow=13.00 cfs 0.851 afPond 3: CB3 36.0" Round Culvert n=0.012 L=228.0' S=0.0031 '/' Outflow=13.00 cfs 0.851 af Peak Elev=321.10' Storage=0.000 af Inflow=0.00 cfs 0.000 afPond 3P: Existing Infiltration 15.0" Round Culvert n=0.012 L=18.0' S=0.0056 '/' Outflow=0.00 cfs 0.000 af Peak Elev=325.42' Inflow=7.54 cfs 0.411 afPond 4: CB4 15.0" Round Culvert n=0.012 L=47.0' S=0.0085 '/' Outflow=7.54 cfs 0.411 af Peak Elev=330.12' Inflow=6.50 cfs 0.387 afPond 5: CB5 12.0" Round Culvert n=0.012 L=37.0' S=0.0049 '/' Outflow=6.50 cfs 0.387 af NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 139HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Peak Elev=327.11' Storage=0.005 af Inflow=8.72 cfs 0.544 afPond IR: CB6 Discarded=0.06 cfs 0.069 af Primary=8.66 cfs 0.475 af Outflow=8.72 cfs 0.544 af Inflow=13.00 cfs 0.851 afLink SN 1: SN 1 Primary=13.00 cfs 0.851 af Inflow=3.17 cfs 0.165 afLink SN 2: SN 2 Primary=3.17 cfs 0.165 af Inflow=2.86 cfs 0.174 afLink SN 3: HTA's Permit Primary=2.86 cfs 0.174 af Total Runoff Area = 12.355 ac Runoff Volume = 2.083 af Average Runoff Depth = 2.02" 38.03% Pervious = 4.699 ac 61.97% Impervious = 7.656 ac NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 140HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1A: Existing to CB3 Runoff = 1.05 cfs @ 12.08 hrs, Volume= 0.052 af, Depth= 3.17" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 50-Year Rainfall=4.37" Area (ac) CN Description 0.030 39 >75% Grass cover, Good, HSG A 0.168 98 Water Surface, HSG A 0.198 89 Weighted Average 0.030 15.15% Pervious Area 0.168 84.85% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.0 123 0.0127 1.00 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.4 33 0.0485 1.54 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 2.4 156 Total Subcatchment Sc 1A: Existing to CB3 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 50-Year Rainfall=4.37" Runoff Area=0.198 ac Runoff Volume=0.052 af Runoff Depth=3.17" Flow Length=156' Tc=2.4 min CN=89 1.05 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 141HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1B: Existing to CB 4 Runoff = 6.31 cfs @ 12.11 hrs, Volume= 0.331 af, Depth= 2.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 50-Year Rainfall=4.37" Area (ac) CN Description 0.673 39 >75% Grass cover, Good, HSG A 1.215 98 Paved parking, HSG A 1.888 77 Weighted Average 0.673 35.65% Pervious Area 1.215 64.35% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.3 66 0.0105 0.82 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 3.3 203 0.0212 1.02 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 4.6 269 Total Subcatchment Sc 1B: Existing to CB 4 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)7 6 5 4 3 2 1 0 NRCC 24-hr A 50-Year Rainfall=4.37" Runoff Area=1.888 ac Runoff Volume=0.331 af Runoff Depth=2.11" Flow Length=269' Tc=4.6 min CN=77 6.31 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 142HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1C: Post SN-1 Runoff = 8.72 cfs @ 12.17 hrs, Volume= 0.544 af, Depth= 2.19" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 50-Year Rainfall=4.37" Area (ac) CN Description 0.995 39 >75% Grass cover, Good, HSG A 1.991 98 Paved parking, HSG A 2.986 78 Weighted Average 0.995 33.32% Pervious Area 1.991 66.68% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 219 0.0054 0.80 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.3 24 0.0046 1.38 Shallow Concentrated Flow, B-C Paved Kv= 20.3 fps 4.5 161 0.0074 0.60 Shallow Concentrated Flow, C-D Short Grass Pasture Kv= 7.0 fps 9.4 404 Total Subcatchment Sc 1C: Post SN-1 Runoff Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)9 8 7 6 5 4 3 2 1 0 NRCC 24-hr A 50-Year Rainfall=4.37" Runoff Area=2.986 ac Runoff Volume=0.544 af Runoff Depth=2.19" Flow Length=404' Tc=9.4 min CN=78 8.72 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 143HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1D: Post SN-1 Runoff = 6.50 cfs @ 12.16 hrs, Volume= 0.387 af, Depth= 2.52" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 50-Year Rainfall=4.37" Area (ac) CN Description 0.496 39 >75% Grass cover, Good, HSG A 1.347 98 Paved parking, HSG A 1.843 82 Weighted Average 0.496 26.91% Pervious Area 1.347 73.09% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 226 0.0055 0.81 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.2 23 0.0109 2.12 Shallow Concentrated Flow, B-C Paved Kv= 20.3 fps 3.5 149 0.0104 0.71 Shallow Concentrated Flow, C-D Short Grass Pasture Kv= 7.0 fps 8.3 398 Total Subcatchment Sc 1D: Post SN-1 Runoff Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)7 6 5 4 3 2 1 0 NRCC 24-hr A 50-Year Rainfall=4.37" Runoff Area=1.843 ac Runoff Volume=0.387 af Runoff Depth=2.52" Flow Length=398' Tc=8.3 min CN=82 6.50 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 144HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 2A: Post SN-2 Runoff = 3.00 cfs @ 12.68 hrs, Volume= 0.429 af, Depth= 1.25" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 50-Year Rainfall=4.37" Area (ac) CN Description * 2.275 39 Pasture/Grassland/Range, Good HSG A 1.848 98 Paved parking, HSG A 4.123 65 Weighted Average 2.275 55.18% Pervious Area 1.848 44.82% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 27.5 94 0.0156 0.06 Sheet Flow, A-B Grass: Bermuda n= 0.410 P2= 2.25" 17.0 248 0.0012 0.24 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 44.5 342 Total Subcatchment Sc 2A: Post SN-2 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)3 2 1 0 NRCC 24-hr A 50-Year Rainfall=4.37" Runoff Area=4.123 ac Runoff Volume=0.429 af Runoff Depth=1.25" Flow Length=342' Tc=44.5 min CN=65 3.00 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 145HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 2B: Post SN-2 Runoff = 3.17 cfs @ 12.11 hrs, Volume= 0.165 af, Depth= 2.44" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 50-Year Rainfall=4.37" Area (ac) CN Description 0.230 39 >75% Grass cover, Good, HSG A 0.582 98 Paved parking, HSG A 0.812 81 Weighted Average 0.230 28.33% Pervious Area 0.582 71.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.8 46 0.0165 0.91 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 3.5 173 0.0142 0.83 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 4.3 219 Total Subcatchment Sc 2B: Post SN-2 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)3 2 1 0 NRCC 24-hr A 50-Year Rainfall=4.37" Runoff Area=0.812 ac Runoff Volume=0.165 af Runoff Depth=2.44" Flow Length=219' Tc=4.3 min CN=81 3.17 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 146HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 3: EG Outside 3 Runoff = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 50-Year Rainfall=4.37" Subcatchment Sc 3: EG Outside 3 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 50-Year Rainfall=4.37" 0.00 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 147HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 4: Towards HTA RON Runoff = 2.86 cfs @ 12.10 hrs, Volume= 0.174 af, Depth= 4.13" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 50-Year Rainfall=4.37" Area (sf) CN Description 0 39 >75% Grass cover, Good, HSG A 21,977 98 Paved parking, HSG A 21,977 98 Weighted Average 21,977 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.3 134 0.0024 0.52 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" Subcatchment Sc 4: Towards HTA RON Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)3 2 1 0 NRCC 24-hr A 50-Year Rainfall=4.37" Runoff Area=21,977 sf Runoff Volume=0.174 af Runoff Depth=4.13" Flow Length=134' Slope=0.0024 '/' Tc=4.3 min CN=98 2.86 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 148HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1: CB1 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 2.52" for 50-Year event Inflow = 6.50 cfs @ 12.16 hrs, Volume= 0.387 af Outflow = 6.50 cfs @ 12.16 hrs, Volume= 0.387 af, Atten= 0%, Lag= 0.0 min Primary = 6.50 cfs @ 12.16 hrs, Volume= 0.387 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 326.29' @ 12.15 hrs Flood Elev= 329.76' Device Routing Invert Outlet Devices #1 Primary 324.60'18.0" Round RCP_Round 18" L= 297.2' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 324.60' / 323.20' S= 0.0047 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf Primary OutFlow Max=6.41 cfs @ 12.16 hrs HW=326.26' (Free Discharge) 1=RCP_Round 18" (Inlet Controls 6.41 cfs @ 3.63 fps) Pond 1: CB1 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=1.843 ac Peak Elev=326.29' 18.0" Round Culvert n=0.012 L=297.2' S=0.0047 '/' 6.50 cfs6.50 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 149HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1A P: Proposed Infiltration Inflow Area = 2.986 ac, 66.68% Impervious, Inflow Depth = 1.91" for 50-Year event Inflow = 8.66 cfs @ 12.17 hrs, Volume= 0.475 af Outflow = 7.22 cfs @ 12.25 hrs, Volume= 0.475 af, Atten= 17%, Lag= 4.9 min Discarded = 2.22 cfs @ 12.25 hrs, Volume= 0.395 af Secondary = 4.99 cfs @ 12.25 hrs, Volume= 0.080 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 329.30' @ 12.25 hrs Surf.Area= 6,996 sf Storage= 4,452 cf Plug-Flow detention time= 25.3 min calculated for 0.475 af (100% of inflow) Center-of-Mass det. time= 25.3 min ( 823.9 - 798.6 ) Volume Invert Avail.Storage Storage Description #1A 323.97' 2,125 cf 44.83'W x 67.28'L x 2.33'H Field A 7,038 cf Overall - 1,725 cf Embedded = 5,313 cf x 40.0% Voids #2A 324.47' 1,725 cf ADS_StormTech SC-310 +Cap x 117 Inside #1 Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap 117 Chambers in 13 Rows #3 324.47' 57 cf 4.00'D x 4.50'H Vertical Cone/Cylinder #4 328.90' 1,666 cf Custom Stage Data (Prismatic) Listed below (Recalc) 5,572 cf Total Available Storage Storage Group A created with Chamber Wizard Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 328.90 74 0 0 329.00 321 20 20 329.10 764 54 74 329.50 7,194 1,592 1,666 Device Routing Invert Outlet Devices #1 Discarded 323.97'13.730 in/hr Exfiltration over Horizontal area #2 Secondary 329.15'9.7" x 2.0" Horiz. Orifice/Grate X 2.00 columns X 10 rows C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=2.22 cfs @ 12.25 hrs HW=329.30' (Free Discharge) 1=Exfiltration (Exfiltration Controls 2.22 cfs) Secondary OutFlow Max=4.98 cfs @ 12.25 hrs HW=329.30' (Free Discharge) 2=Orifice/Grate (Orifice Controls 4.98 cfs @ 1.85 fps) NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 150HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 1A P: Proposed Infiltration - Chamber Wizard Field A Chamber Model = ADS_StormTech SC-310 +Cap (ADS StormTech® SC-310 with cap length) Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap 34.0" Wide + 6.0" Spacing = 40.0" C-C Row Spacing 9 Chambers/Row x 7.12' Long +0.60' Cap Length x 2 = 65.28' Row Length +12.0" End Stone x 2 = 67.28' Base Length 13 Rows x 34.0" Wide + 6.0" Spacing x 12 + 12.0" Side Stone x 2 = 44.83' Base Width 6.0" Stone Base + 16.0" Chamber Height + 6.0" Stone Cover = 2.33' Field Height 117 Chambers x 14.7 cf = 1,724.8 cf Chamber Storage 7,038.2 cf Field - 1,724.8 cf Chambers = 5,313.4 cf Stone x 40.0% Voids = 2,125.4 cf Stone Storage Chamber Storage + Stone Storage = 3,850.2 cf = 0.088 af Overall Storage Efficiency = 54.7% Overall System Size = 67.28' x 44.83' x 2.33' 117 Chambers 260.7 cy Field 196.8 cy Stone NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 151HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 1A P: Proposed Infiltration Inflow Outflow Discarded Secondary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)9 8 7 6 5 4 3 2 1 0 Inflow Area=2.986 ac Peak Elev=329.30' Storage=4,452 cf 8.66 cfs 7.22 cfs 2.22 cfs 4.99 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 152HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2: CB2 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 2.52" for 50-Year event Inflow = 6.50 cfs @ 12.16 hrs, Volume= 0.387 af Outflow = 6.50 cfs @ 12.16 hrs, Volume= 0.387 af, Atten= 0%, Lag= 0.0 min Primary = 6.50 cfs @ 12.16 hrs, Volume= 0.387 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 324.79' @ 12.15 hrs Flood Elev= 331.03' Device Routing Invert Outlet Devices #1 Primary 323.10'18.0" Round RCP_Round 18" L= 305.2' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 323.10' / 321.80' S= 0.0043 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf Primary OutFlow Max=6.41 cfs @ 12.16 hrs HW=324.76' (Free Discharge) 1=RCP_Round 18" (Inlet Controls 6.41 cfs @ 3.63 fps) Pond 2: CB2 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=1.843 ac Peak Elev=324.79' 18.0" Round Culvert n=0.012 L=305.2' S=0.0043 '/' 6.50 cfs6.50 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 153HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2P: Existing Infiltration Inflow Area = 4.123 ac, 44.82% Impervious, Inflow Depth = 1.25" for 50-Year event Inflow = 3.00 cfs @ 12.68 hrs, Volume= 0.429 af Outflow = 3.00 cfs @ 12.68 hrs, Volume= 0.429 af, Atten= 0%, Lag= 0.0 min Discarded = 3.00 cfs @ 12.68 hrs, Volume= 0.429 af Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 319.82' @ 12.68 hrs Surf.Area= 0.002 ac Storage= 0.000 af Flood Elev= 327.97' Storage= 0.087 af Plug-Flow detention time= 0.0 min calculated for 0.429 af (100% of inflow) Center-of-Mass det. time= 0.0 min ( 888.5 - 888.5 ) Volume Invert Avail.Storage Storage Description #1 320.00' 0.050 af 24.0" Round CMP_Round 24" x 18 L= 38.2' #2 319.90' 0.020 af 24.0" Round CMP_Round 24" L= 270.7' #3 319.80' 0.018 af 24.0" Round CMP_Round 24" L= 246.0' 0.087 af Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 319.80'13.24 cfs Exfiltration when above 319.80' #2 Secondary 322.98'24.0" Round RCP_Round 24" L= 75.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 322.98' / 322.15' S= 0.0111 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 3.14 sf Discarded OutFlow Max=13.24 cfs @ 12.68 hrs HW=319.82' (Free Discharge) 1=Exfiltration (Exfiltration Controls 13.24 cfs) Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=319.80' (Free Discharge) 2=RCP_Round 24" ( Controls 0.00 cfs) NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 154HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 2P: Existing Infiltration Inflow Outflow Discarded Secondary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)3 2 1 0 Inflow Area=4.123 ac Peak Elev=319.82' Storage=0.000 af 3.00 cfs3.00 cfs3.00 cfs 0.00 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 155HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3: CB3 Inflow Area = 3.929 ac, 69.48% Impervious, Inflow Depth = 2.60" for 50-Year event Inflow = 13.00 cfs @ 12.19 hrs, Volume= 0.851 af Outflow = 13.00 cfs @ 12.19 hrs, Volume= 0.851 af, Atten= 0%, Lag= 0.0 min Primary = 13.00 cfs @ 12.19 hrs, Volume= 0.851 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 323.40' @ 12.19 hrs Flood Elev= 329.13' Device Routing Invert Outlet Devices #1 Primary 321.70'36.0" Round RCP_Round 36" L= 228.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 321.70' / 321.00' S= 0.0031 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 7.07 sf Primary OutFlow Max=12.86 cfs @ 12.19 hrs HW=323.39' (Free Discharge) 1=RCP_Round 36" (Barrel Controls 12.86 cfs @ 4.52 fps) Pond 3: CB3 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=3.929 ac Peak Elev=323.40' 36.0" Round Culvert n=0.012 L=228.0' S=0.0031 '/' 13.00 cfs13.00 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 156HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3P: Existing Infiltration Inflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 321.10' @ 1.00 hrs Storage= 0.000 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no inflow) Volume Invert Avail.Storage Storage Description #1 321.10' 0.099 af 36.0" Round CMP_Round 36" x 3 L= 203.0' Device Routing Invert Outlet Devices #1 Secondary 323.20'15.0" Round CMP_Round 15" L= 18.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 323.20' / 323.10' S= 0.0056 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=321.10' (Free Discharge) 1=CMP_Round 15" ( Controls 0.00 cfs) Pond 3P: Existing Infiltration Inflow Secondary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Peak Elev=321.10' Storage=0.000 af 15.0" Round Culvert n=0.012 L=18.0' S=0.0056 '/' 0.00 cfs0.00 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 157HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 4: CB4 Inflow Area = 1.888 ac, 64.35% Impervious, Inflow Depth = 2.61" for 50-Year event Inflow = 7.54 cfs @ 12.24 hrs, Volume= 0.411 af Outflow = 7.54 cfs @ 12.24 hrs, Volume= 0.411 af, Atten= 0%, Lag= 0.0 min Primary = 7.54 cfs @ 12.24 hrs, Volume= 0.411 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 325.42' @ 12.24 hrs Flood Elev= 328.47' Device Routing Invert Outlet Devices #1 Primary 322.20'15.0" Round RCP_Round 15" L= 47.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 322.20' / 321.80' S= 0.0085 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Primary OutFlow Max=7.33 cfs @ 12.24 hrs HW=325.29' (Free Discharge) 1=RCP_Round 15" (Inlet Controls 7.33 cfs @ 5.97 fps) Pond 4: CB4 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=1.888 ac Peak Elev=325.42' 15.0" Round Culvert n=0.012 L=47.0' S=0.0085 '/' 7.54 cfs7.54 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 158HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 5: CB5 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 2.52" for 50-Year event Inflow = 6.50 cfs @ 12.16 hrs, Volume= 0.387 af Outflow = 6.50 cfs @ 12.16 hrs, Volume= 0.387 af, Atten= 0%, Lag= 0.0 min Primary = 6.50 cfs @ 12.16 hrs, Volume= 0.387 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 330.12' @ 12.15 hrs Device Routing Invert Outlet Devices #1 Primary 324.88'12.0" Round RCP_Round 12" L= 37.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 324.88' / 324.70' S= 0.0049 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf Primary OutFlow Max=6.41 cfs @ 12.16 hrs HW=329.99' (Free Discharge) 1=RCP_Round 12" (Inlet Controls 6.41 cfs @ 8.16 fps) Pond 5: CB5 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=1.843 ac Peak Elev=330.12' 12.0" Round Culvert n=0.012 L=37.0' S=0.0049 '/' 6.50 cfs6.50 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 159HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond IR: CB6 Inflow Area = 2.986 ac, 66.68% Impervious, Inflow Depth = 2.19" for 50-Year event Inflow = 8.72 cfs @ 12.17 hrs, Volume= 0.544 af Outflow = 8.72 cfs @ 12.17 hrs, Volume= 0.544 af, Atten= 0%, Lag= 0.0 min Discarded = 0.06 cfs @ 12.46 hrs, Volume= 0.069 af Primary = 8.66 cfs @ 12.17 hrs, Volume= 0.475 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 327.11' @ 12.17 hrs Storage= 0.005 af Flood Elev= 330.00' Storage= 0.005 af Plug-Flow detention time= 6.4 min calculated for 0.544 af (100% of inflow) Center-of-Mass det. time= 6.5 min ( 831.2 - 824.7 ) Volume Invert Avail.Storage Storage Description #1 324.85' 0.005 af 18.0" Round RCP_Round 18" L= 117.2' S= 0.0050 '/' Device Routing Invert Outlet Devices #1 Discarded 324.85'13.730 in/hr Exfiltration over Horizontal area #2 Primary 326.35'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.06 cfs @ 12.46 hrs HW=326.72' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.06 cfs) Primary OutFlow Max=8.39 cfs @ 12.17 hrs HW=327.10' (Free Discharge) 2=Broad-Crested Rectangular Weir (Weir Controls 8.39 cfs @ 2.80 fps) NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 160HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond IR: CB6 Inflow Outflow Discarded Primary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)9 8 7 6 5 4 3 2 1 0 Inflow Area=2.986 ac Peak Elev=327.11' Storage=0.005 af 8.72 cfs8.72 cfs 0.06 cfs 8.66 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 161HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 1: SN 1 Inflow Area = 3.929 ac, 69.48% Impervious, Inflow Depth = 2.60" for 50-Year event Inflow = 13.00 cfs @ 12.19 hrs, Volume= 0.851 af Primary = 13.00 cfs @ 12.19 hrs, Volume= 0.851 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 1: SN 1 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=3.929 ac 13.00 cfs13.00 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 162HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 2: SN 2 Inflow Area = 0.812 ac, 71.67% Impervious, Inflow Depth = 2.44" for 50-Year event Inflow = 3.17 cfs @ 12.11 hrs, Volume= 0.165 af Primary = 3.17 cfs @ 12.11 hrs, Volume= 0.165 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 2: SN 2 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)3 2 1 0 Inflow Area=0.812 ac 3.17 cfs3.17 cfs NRCC 24-hr A 50-Year Rainfall=4.37"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 163HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 3: HTA's Permit Inflow Area = 0.505 ac,100.00% Impervious, Inflow Depth = 4.13" for 50-Year event Inflow = 2.86 cfs @ 12.10 hrs, Volume= 0.174 af Primary = 2.86 cfs @ 12.10 hrs, Volume= 0.174 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 3: HTA's Permit InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)3 2 1 0 Inflow Area=0.505 ac 2.86 cfs2.86 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 164HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Time span=1.00-72.00 hrs, dt=0.05 hrs, 1421 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=0.198 ac 84.85% Impervious Runoff Depth=3.65"Subcatchment Sc 1A: Existing to CB3 Flow Length=156' Tc=2.4 min CN=89 Runoff=1.20 cfs 0.060 af Runoff Area=1.888 ac 64.35% Impervious Runoff Depth=2.51"Subcatchment Sc 1B: Existing to CB 4 Flow Length=269' Tc=4.6 min CN=77 Runoff=7.53 cfs 0.396 af Runoff Area=2.986 ac 66.68% Impervious Runoff Depth=2.60"Subcatchment Sc 1C: Post SN-1 Flow Length=404' Tc=9.4 min CN=78 Runoff=10.37 cfs 0.647 af Runoff Area=1.843 ac 73.09% Impervious Runoff Depth=2.96"Subcatchment Sc 1D: Post SN-1 Flow Length=398' Tc=8.3 min CN=82 Runoff=7.61 cfs 0.455 af Runoff Area=4.123 ac 44.82% Impervious Runoff Depth=1.57"Subcatchment Sc 2A: Post SN-2 Flow Length=342' Tc=44.5 min CN=65 Runoff=3.85 cfs 0.539 af Runoff Area=0.812 ac 71.67% Impervious Runoff Depth=2.87"Subcatchment Sc 2B: Post SN-2 Flow Length=219' Tc=4.3 min CN=81 Runoff=3.72 cfs 0.194 af Subcatchment Sc 3: EG Outside 3 Runoff=0.00 cfs 0.000 af Runoff Area=21,977 sf 100.00% Impervious Runoff Depth>4.63"Subcatchment Sc 4: Towards HTA RON Flow Length=134' Slope=0.0024 '/' Tc=4.3 min CN=98 Runoff=3.19 cfs 0.195 af Peak Elev=326.63' Inflow=7.61 cfs 0.455 afPond 1: CB1 18.0" Round Culvert n=0.012 L=297.2' S=0.0047 '/' Outflow=7.61 cfs 0.455 af Peak Elev=329.38' Storage=4,814 cf Inflow=10.31 cfs 0.576 afPond 1A P: Proposed Infiltration Discarded=2.72 cfs 0.451 af Secondary=6.67 cfs 0.126 af Outflow=9.39 cfs 0.576 af Peak Elev=325.21' Inflow=7.61 cfs 0.455 afPond 2: CB2 18.0" Round Culvert n=0.012 L=305.2' S=0.0043 '/' Outflow=7.61 cfs 0.455 af Peak Elev=319.82' Storage=0.000 af Inflow=3.85 cfs 0.539 afPond 2P: Existing Infiltration Discarded=3.85 cfs 0.539 af Secondary=0.00 cfs 0.000 af Outflow=3.85 cfs 0.539 af Peak Elev=323.73' Inflow=17.52 cfs 1.037 afPond 3: CB3 36.0" Round Culvert n=0.012 L=228.0' S=0.0031 '/' Outflow=17.52 cfs 1.037 af Peak Elev=321.10' Storage=0.000 af Inflow=0.00 cfs 0.000 afPond 3P: Existing Infiltration 15.0" Round Culvert n=0.012 L=18.0' S=0.0056 '/' Outflow=0.00 cfs 0.000 af Peak Elev=327.54' Inflow=10.13 cfs 0.521 afPond 4: CB4 15.0" Round Culvert n=0.012 L=47.0' S=0.0085 '/' Outflow=10.13 cfs 0.521 af Peak Elev=331.87' Inflow=7.61 cfs 0.455 afPond 5: CB5 12.0" Round Culvert n=0.012 L=37.0' S=0.0049 '/' Outflow=7.61 cfs 0.455 af NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 165HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Peak Elev=327.20' Storage=0.005 af Inflow=10.37 cfs 0.647 afPond IR: CB6 Discarded=0.06 cfs 0.071 af Primary=10.31 cfs 0.576 af Outflow=10.37 cfs 0.647 af Inflow=17.52 cfs 1.037 afLink SN 1: SN 1 Primary=17.52 cfs 1.037 af Inflow=3.72 cfs 0.194 afLink SN 2: SN 2 Primary=3.72 cfs 0.194 af Inflow=3.19 cfs 0.195 afLink SN 3: HTA's Permit Primary=3.19 cfs 0.195 af Total Runoff Area = 12.355 ac Runoff Volume = 2.486 af Average Runoff Depth = 2.41" 38.03% Pervious = 4.699 ac 61.97% Impervious = 7.656 ac NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 166HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1A: Existing to CB3 Runoff = 1.20 cfs @ 12.08 hrs, Volume= 0.060 af, Depth= 3.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 100-Year Rainfall=4.87" Area (ac) CN Description 0.030 39 >75% Grass cover, Good, HSG A 0.168 98 Water Surface, HSG A 0.198 89 Weighted Average 0.030 15.15% Pervious Area 0.168 84.85% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 2.0 123 0.0127 1.00 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.4 33 0.0485 1.54 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 2.4 156 Total Subcatchment Sc 1A: Existing to CB3 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 100-Year Rainfall=4.87" Runoff Area=0.198 ac Runoff Volume=0.060 af Runoff Depth=3.65" Flow Length=156' Tc=2.4 min CN=89 1.20 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 167HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1B: Existing to CB 4 Runoff = 7.53 cfs @ 12.11 hrs, Volume= 0.396 af, Depth= 2.51" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 100-Year Rainfall=4.87" Area (ac) CN Description 0.673 39 >75% Grass cover, Good, HSG A 1.215 98 Paved parking, HSG A 1.888 77 Weighted Average 0.673 35.65% Pervious Area 1.215 64.35% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.3 66 0.0105 0.82 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 3.3 203 0.0212 1.02 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 4.6 269 Total Subcatchment Sc 1B: Existing to CB 4 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)8 7 6 5 4 3 2 1 0 NRCC 24-hr A 100-Year Rainfall=4.87" Runoff Area=1.888 ac Runoff Volume=0.396 af Runoff Depth=2.51" Flow Length=269' Tc=4.6 min CN=77 7.53 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 168HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1C: Post SN-1 Runoff = 10.37 cfs @ 12.17 hrs, Volume= 0.647 af, Depth= 2.60" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 100-Year Rainfall=4.87" Area (ac) CN Description 0.995 39 >75% Grass cover, Good, HSG A 1.991 98 Paved parking, HSG A 2.986 78 Weighted Average 0.995 33.32% Pervious Area 1.991 66.68% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 219 0.0054 0.80 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.3 24 0.0046 1.38 Shallow Concentrated Flow, B-C Paved Kv= 20.3 fps 4.5 161 0.0074 0.60 Shallow Concentrated Flow, C-D Short Grass Pasture Kv= 7.0 fps 9.4 404 Total Subcatchment Sc 1C: Post SN-1 Runoff Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)11 10 9 8 7 6 5 4 3 2 1 0 NRCC 24-hr A 100-Year Rainfall=4.87" Runoff Area=2.986 ac Runoff Volume=0.647 af Runoff Depth=2.60" Flow Length=404' Tc=9.4 min CN=78 10.37 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 169HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 1D: Post SN-1 Runoff = 7.61 cfs @ 12.15 hrs, Volume= 0.455 af, Depth= 2.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 100-Year Rainfall=4.87" Area (ac) CN Description 0.496 39 >75% Grass cover, Good, HSG A 1.347 98 Paved parking, HSG A 1.843 82 Weighted Average 0.496 26.91% Pervious Area 1.347 73.09% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 226 0.0055 0.81 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 0.2 23 0.0109 2.12 Shallow Concentrated Flow, B-C Paved Kv= 20.3 fps 3.5 149 0.0104 0.71 Shallow Concentrated Flow, C-D Short Grass Pasture Kv= 7.0 fps 8.3 398 Total Subcatchment Sc 1D: Post SN-1 Runoff Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)8 7 6 5 4 3 2 1 0 NRCC 24-hr A 100-Year Rainfall=4.87" Runoff Area=1.843 ac Runoff Volume=0.455 af Runoff Depth=2.96" Flow Length=398' Tc=8.3 min CN=82 7.61 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 170HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 2A: Post SN-2 Runoff = 3.85 cfs @ 12.67 hrs, Volume= 0.539 af, Depth= 1.57" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 100-Year Rainfall=4.87" Area (ac) CN Description * 2.275 39 Pasture/Grassland/Range, Good HSG A 1.848 98 Paved parking, HSG A 4.123 65 Weighted Average 2.275 55.18% Pervious Area 1.848 44.82% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 27.5 94 0.0156 0.06 Sheet Flow, A-B Grass: Bermuda n= 0.410 P2= 2.25" 17.0 248 0.0012 0.24 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 44.5 342 Total Subcatchment Sc 2A: Post SN-2 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 NRCC 24-hr A 100-Year Rainfall=4.87" Runoff Area=4.123 ac Runoff Volume=0.539 af Runoff Depth=1.57" Flow Length=342' Tc=44.5 min CN=65 3.85 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 171HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 2B: Post SN-2 Runoff = 3.72 cfs @ 12.11 hrs, Volume= 0.194 af, Depth= 2.87" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 100-Year Rainfall=4.87" Area (ac) CN Description 0.230 39 >75% Grass cover, Good, HSG A 0.582 98 Paved parking, HSG A 0.812 81 Weighted Average 0.230 28.33% Pervious Area 0.582 71.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.8 46 0.0165 0.91 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" 3.5 173 0.0142 0.83 Shallow Concentrated Flow, B-C Short Grass Pasture Kv= 7.0 fps 4.3 219 Total Subcatchment Sc 2B: Post SN-2 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 NRCC 24-hr A 100-Year Rainfall=4.87" Runoff Area=0.812 ac Runoff Volume=0.194 af Runoff Depth=2.87" Flow Length=219' Tc=4.3 min CN=81 3.72 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 172HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 3: EG Outside 3 Runoff = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 100-Year Rainfall=4.87" Subcatchment Sc 3: EG Outside 3 Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 NRCC 24-hr A 100-Year Rainfall=4.87" 0.00 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 173HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment Sc 4: Towards HTA RON Runoff = 3.19 cfs @ 12.10 hrs, Volume= 0.195 af, Depth> 4.63" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs NRCC 24-hr A 100-Year Rainfall=4.87" Area (sf) CN Description 0 39 >75% Grass cover, Good, HSG A 21,977 98 Paved parking, HSG A 21,977 98 Weighted Average 21,977 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.3 134 0.0024 0.52 Sheet Flow, A-B Smooth surfaces n= 0.011 P2= 2.25" Subcatchment Sc 4: Towards HTA RON Runoff Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)3 2 1 0 NRCC 24-hr A 100-Year Rainfall=4.87" Runoff Area=21,977 sf Runoff Volume=0.195 af Runoff Depth>4.63" Flow Length=134' Slope=0.0024 '/' Tc=4.3 min CN=98 3.19 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 174HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1: CB1 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 2.96" for 100-Year event Inflow = 7.61 cfs @ 12.15 hrs, Volume= 0.455 af Outflow = 7.61 cfs @ 12.15 hrs, Volume= 0.455 af, Atten= 0%, Lag= 0.0 min Primary = 7.61 cfs @ 12.15 hrs, Volume= 0.455 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 326.63' @ 12.15 hrs Flood Elev= 329.76' Device Routing Invert Outlet Devices #1 Primary 324.60'18.0" Round RCP_Round 18" L= 297.2' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 324.60' / 323.20' S= 0.0047 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf Primary OutFlow Max=7.51 cfs @ 12.15 hrs HW=326.60' (Free Discharge) 1=RCP_Round 18" (Inlet Controls 7.51 cfs @ 4.25 fps) Pond 1: CB1 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=1.843 ac Peak Elev=326.63' 18.0" Round Culvert n=0.012 L=297.2' S=0.0047 '/' 7.61 cfs7.61 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 175HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1A P: Proposed Infiltration Inflow Area = 2.986 ac, 66.68% Impervious, Inflow Depth = 2.32" for 100-Year event Inflow = 10.31 cfs @ 12.17 hrs, Volume= 0.576 af Outflow = 9.39 cfs @ 12.22 hrs, Volume= 0.576 af, Atten= 9%, Lag= 3.3 min Discarded = 2.72 cfs @ 12.22 hrs, Volume= 0.451 af Secondary = 6.67 cfs @ 12.22 hrs, Volume= 0.126 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 329.38' @ 12.20 hrs Surf.Area= 8,262 sf Storage= 4,814 cf Plug-Flow detention time= 23.2 min calculated for 0.576 af (100% of inflow) Center-of-Mass det. time= 23.2 min ( 822.6 - 799.3 ) Volume Invert Avail.Storage Storage Description #1A 323.97' 2,125 cf 44.83'W x 67.28'L x 2.33'H Field A 7,038 cf Overall - 1,725 cf Embedded = 5,313 cf x 40.0% Voids #2A 324.47' 1,725 cf ADS_StormTech SC-310 +Cap x 117 Inside #1 Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap 117 Chambers in 13 Rows #3 324.47' 57 cf 4.00'D x 4.50'H Vertical Cone/Cylinder #4 328.90' 1,666 cf Custom Stage Data (Prismatic) Listed below (Recalc) 5,572 cf Total Available Storage Storage Group A created with Chamber Wizard Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 328.90 74 0 0 329.00 321 20 20 329.10 764 54 74 329.50 7,194 1,592 1,666 Device Routing Invert Outlet Devices #1 Discarded 323.97'13.730 in/hr Exfiltration over Horizontal area #2 Secondary 329.15'9.7" x 2.0" Horiz. Orifice/Grate X 2.00 columns X 10 rows C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=2.62 cfs @ 12.22 hrs HW=329.38' (Free Discharge) 1=Exfiltration (Exfiltration Controls 2.62 cfs) Secondary OutFlow Max=6.18 cfs @ 12.22 hrs HW=329.38' (Free Discharge) 2=Orifice/Grate (Orifice Controls 6.18 cfs @ 2.29 fps) NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 176HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 1A P: Proposed Infiltration - Chamber Wizard Field A Chamber Model = ADS_StormTech SC-310 +Cap (ADS StormTech® SC-310 with cap length) Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap 34.0" Wide + 6.0" Spacing = 40.0" C-C Row Spacing 9 Chambers/Row x 7.12' Long +0.60' Cap Length x 2 = 65.28' Row Length +12.0" End Stone x 2 = 67.28' Base Length 13 Rows x 34.0" Wide + 6.0" Spacing x 12 + 12.0" Side Stone x 2 = 44.83' Base Width 6.0" Stone Base + 16.0" Chamber Height + 6.0" Stone Cover = 2.33' Field Height 117 Chambers x 14.7 cf = 1,724.8 cf Chamber Storage 7,038.2 cf Field - 1,724.8 cf Chambers = 5,313.4 cf Stone x 40.0% Voids = 2,125.4 cf Stone Storage Chamber Storage + Stone Storage = 3,850.2 cf = 0.088 af Overall Storage Efficiency = 54.7% Overall System Size = 67.28' x 44.83' x 2.33' 117 Chambers 260.7 cy Field 196.8 cy Stone NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 177HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 1A P: Proposed Infiltration Inflow Outflow Discarded Secondary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=2.986 ac Peak Elev=329.38' Storage=4,814 cf 10.31 cfs 9.39 cfs 2.72 cfs 6.67 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 178HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2: CB2 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 2.96" for 100-Year event Inflow = 7.61 cfs @ 12.15 hrs, Volume= 0.455 af Outflow = 7.61 cfs @ 12.15 hrs, Volume= 0.455 af, Atten= 0%, Lag= 0.0 min Primary = 7.61 cfs @ 12.15 hrs, Volume= 0.455 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 325.21' @ 12.15 hrs Flood Elev= 331.03' Device Routing Invert Outlet Devices #1 Primary 323.10'18.0" Round RCP_Round 18" L= 305.2' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 323.10' / 321.80' S= 0.0043 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.77 sf Primary OutFlow Max=7.53 cfs @ 12.15 hrs HW=325.17' (Free Discharge) 1=RCP_Round 18" (Barrel Controls 7.53 cfs @ 4.26 fps) Pond 2: CB2 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=1.843 ac Peak Elev=325.21' 18.0" Round Culvert n=0.012 L=305.2' S=0.0043 '/' 7.61 cfs7.61 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 179HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2P: Existing Infiltration Inflow Area = 4.123 ac, 44.82% Impervious, Inflow Depth = 1.57" for 100-Year event Inflow = 3.85 cfs @ 12.67 hrs, Volume= 0.539 af Outflow = 3.85 cfs @ 12.67 hrs, Volume= 0.539 af, Atten= 0%, Lag= 0.0 min Discarded = 3.85 cfs @ 12.67 hrs, Volume= 0.539 af Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 319.82' @ 12.67 hrs Surf.Area= 0.002 ac Storage= 0.000 af Flood Elev= 327.97' Storage= 0.087 af Plug-Flow detention time= 0.0 min calculated for 0.538 af (100% of inflow) Center-of-Mass det. time= 0.0 min ( 882.2 - 882.2 ) Volume Invert Avail.Storage Storage Description #1 320.00' 0.050 af 24.0" Round CMP_Round 24" x 18 L= 38.2' #2 319.90' 0.020 af 24.0" Round CMP_Round 24" L= 270.7' #3 319.80' 0.018 af 24.0" Round CMP_Round 24" L= 246.0' 0.087 af Total Available Storage Device Routing Invert Outlet Devices #1 Discarded 319.80'13.24 cfs Exfiltration when above 319.80' #2 Secondary 322.98'24.0" Round RCP_Round 24" L= 75.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 322.98' / 322.15' S= 0.0111 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 3.14 sf Discarded OutFlow Max=13.24 cfs @ 12.67 hrs HW=319.82' (Free Discharge) 1=Exfiltration (Exfiltration Controls 13.24 cfs) Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=319.80' (Free Discharge) 2=RCP_Round 24" ( Controls 0.00 cfs) NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 180HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond 2P: Existing Infiltration Inflow Outflow Discarded Secondary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 Inflow Area=4.123 ac Peak Elev=319.82' Storage=0.000 af 3.85 cfs3.85 cfs3.85 cfs 0.00 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 181HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3: CB3 Inflow Area = 3.929 ac, 69.48% Impervious, Inflow Depth = 3.17" for 100-Year event Inflow = 17.52 cfs @ 12.18 hrs, Volume= 1.037 af Outflow = 17.52 cfs @ 12.18 hrs, Volume= 1.037 af, Atten= 0%, Lag= 0.0 min Primary = 17.52 cfs @ 12.18 hrs, Volume= 1.037 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 323.73' @ 12.18 hrs Flood Elev= 329.13' Device Routing Invert Outlet Devices #1 Primary 321.70'36.0" Round RCP_Round 36" L= 228.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 321.70' / 321.00' S= 0.0031 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 7.07 sf Primary OutFlow Max=17.14 cfs @ 12.18 hrs HW=323.70' (Free Discharge) 1=RCP_Round 36" (Barrel Controls 17.14 cfs @ 4.84 fps) Pond 3: CB3 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=3.929 ac Peak Elev=323.73' 36.0" Round Culvert n=0.012 L=228.0' S=0.0031 '/' 17.52 cfs17.52 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 182HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3P: Existing Infiltration Inflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Secondary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 321.10' @ 1.00 hrs Storage= 0.000 af Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no inflow) Volume Invert Avail.Storage Storage Description #1 321.10' 0.099 af 36.0" Round CMP_Round 36" x 3 L= 203.0' Device Routing Invert Outlet Devices #1 Secondary 323.20'15.0" Round CMP_Round 15" L= 18.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 323.20' / 323.10' S= 0.0056 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=321.10' (Free Discharge) 1=CMP_Round 15" ( Controls 0.00 cfs) Pond 3P: Existing Infiltration Inflow Secondary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)1 0 Peak Elev=321.10' Storage=0.000 af 15.0" Round Culvert n=0.012 L=18.0' S=0.0056 '/' 0.00 cfs0.00 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 183HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 4: CB4 Inflow Area = 1.888 ac, 64.35% Impervious, Inflow Depth = 3.31" for 100-Year event Inflow = 10.13 cfs @ 12.20 hrs, Volume= 0.521 af Outflow = 10.13 cfs @ 12.20 hrs, Volume= 0.521 af, Atten= 0%, Lag= 0.0 min Primary = 10.13 cfs @ 12.20 hrs, Volume= 0.521 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 327.54' @ 12.20 hrs Flood Elev= 328.47' Device Routing Invert Outlet Devices #1 Primary 322.20'15.0" Round RCP_Round 15" L= 47.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 322.20' / 321.80' S= 0.0085 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Primary OutFlow Max=10.09 cfs @ 12.20 hrs HW=327.51' (Free Discharge) 1=RCP_Round 15" (Inlet Controls 10.09 cfs @ 8.23 fps) Pond 4: CB4 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.888 ac Peak Elev=327.54' 15.0" Round Culvert n=0.012 L=47.0' S=0.0085 '/' 10.13 cfs10.13 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 184HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond 5: CB5 Inflow Area = 1.843 ac, 73.09% Impervious, Inflow Depth = 2.96" for 100-Year event Inflow = 7.61 cfs @ 12.15 hrs, Volume= 0.455 af Outflow = 7.61 cfs @ 12.15 hrs, Volume= 0.455 af, Atten= 0%, Lag= 0.0 min Primary = 7.61 cfs @ 12.15 hrs, Volume= 0.455 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 331.87' @ 12.15 hrs Device Routing Invert Outlet Devices #1 Primary 324.88'12.0" Round RCP_Round 12" L= 37.0' CMP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 324.88' / 324.70' S= 0.0049 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.79 sf Primary OutFlow Max=7.51 cfs @ 12.15 hrs HW=331.71' (Free Discharge) 1=RCP_Round 12" (Inlet Controls 7.51 cfs @ 9.56 fps) Pond 5: CB5 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)8 7 6 5 4 3 2 1 0 Inflow Area=1.843 ac Peak Elev=331.87' 12.0" Round Culvert n=0.012 L=37.0' S=0.0049 '/' 7.61 cfs7.61 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 185HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Pond IR: CB6 Inflow Area = 2.986 ac, 66.68% Impervious, Inflow Depth = 2.60" for 100-Year event Inflow = 10.37 cfs @ 12.17 hrs, Volume= 0.647 af Outflow = 10.37 cfs @ 12.17 hrs, Volume= 0.647 af, Atten= 0%, Lag= 0.0 min Discarded = 0.06 cfs @ 12.53 hrs, Volume= 0.071 af Primary = 10.31 cfs @ 12.17 hrs, Volume= 0.576 af Routing by Stor-Ind method, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 327.20' @ 12.17 hrs Storage= 0.005 af Flood Elev= 330.00' Storage= 0.005 af Plug-Flow detention time= 5.6 min calculated for 0.647 af (100% of inflow) Center-of-Mass det. time= 5.6 min ( 826.1 - 820.5 ) Volume Invert Avail.Storage Storage Description #1 324.85' 0.005 af 18.0" Round RCP_Round 18" L= 117.2' S= 0.0050 '/' Device Routing Invert Outlet Devices #1 Discarded 324.85'13.730 in/hr Exfiltration over Horizontal area #2 Primary 326.35'4.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 Discarded OutFlow Max=0.06 cfs @ 12.53 hrs HW=326.72' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.06 cfs) Primary OutFlow Max=10.01 cfs @ 12.17 hrs HW=327.18' (Free Discharge) 2=Broad-Crested Rectangular Weir (Weir Controls 10.01 cfs @ 3.01 fps) NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 186HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Pond IR: CB6 Inflow Outflow Discarded Primary Hydrograph Time (hours)72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=2.986 ac Peak Elev=327.20' Storage=0.005 af 10.37 cfs10.37 cfs 0.06 cfs 10.31 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 187HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 1: SN 1 Inflow Area = 3.929 ac, 69.48% Impervious, Inflow Depth = 3.17" for 100-Year event Inflow = 17.52 cfs @ 12.18 hrs, Volume= 1.037 af Primary = 17.52 cfs @ 12.18 hrs, Volume= 1.037 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 1: SN 1 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=3.929 ac 17.52 cfs17.52 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 188HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 2: SN 2 Inflow Area = 0.812 ac, 71.67% Impervious, Inflow Depth = 2.87" for 100-Year event Inflow = 3.72 cfs @ 12.11 hrs, Volume= 0.194 af Primary = 3.72 cfs @ 12.11 hrs, Volume= 0.194 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 2: SN 2 InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)4 3 2 1 0 Inflow Area=0.812 ac 3.72 cfs3.72 cfs NRCC 24-hr A 100-Year Rainfall=4.87"POST-Development - Final Printed 3/22/2022Prepared by {enter your company name here} Page 189HydroCAD® 10.10-5a s/n 02401 © 2020 HydroCAD Software Solutions LLC Summary for Link SN 3: HTA's Permit Inflow Area = 0.505 ac,100.00% Impervious, Inflow Depth > 4.63" for 100-Year event Inflow = 3.19 cfs @ 12.10 hrs, Volume= 0.195 af Primary = 3.19 cfs @ 12.10 hrs, Volume= 0.195 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 1.00-72.00 hrs, dt= 0.05 hrs Link SN 3: HTA's Permit InflowPrimary Hydrograph Time (hours) 72706866646260585654525048464442403836343230282624222018161412108642Flow (cfs)3 2 1 0 Inflow Area=0.505 ac 3.19 cfs3.19 cfs