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HomeMy WebLinkAbout2019-09-17 Hydrologic Analysis 8/29/19 505 Sutton Proposed Conditions Hydrologic Analysis Type IU 24-hr I"Storm Rainfall=1.00" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10.00-13 s/n 00401 02014 H droCAD Software Solutions LLC Page 2 Summary for Subcatchment PSI: Runoff = 0.43 cfs @ 12.09 hrs, Volume= 1,319 cf, Depth= 0.56" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 1" Storm Rainfall=1.00" Areas CN Descri tion 3,170 74 >75% Grass cover, Good, HSG C 23,273 98 Paved parking, HSG C 661 98 Roofs, HSG C 987 98 Unconnected pavement, HSG C 28,091 95 Weighted Average 3,170 11.28% Pervious Area 24,921 88.72% Impervious Area 987 3.96% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ftlsec) (cfs) 6.0 Direct Entry, Summary for Subcatchment PSI0: Runoff - 0.28 cfs @ 12.08 hrs, Volume= 912 cf, Depth= 0.79" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 1" Storm Rainfall=1.00" Areas CN Description 13,844 98 Roofs HSG C 13,844 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min)Meet) (ftlft) (ft/sec) (cfs) 6.0 Direct Entry, ` Summary for Subcatchment PSI I: Runoff - 0.31 cfs @ 12.08 hrs, Volume= 1,003 cf, Depth= 0,79" I Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 1" Storm Rainfall=1.00" Areas CN Description 15,214 98 Roofs, HSG C 15,214 100.00% Impervious Area 505 Sutton Proposed Conditions Hydrologic Analysis Type Ill 24-hr I"Storm Rainfall=?.00" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10.00-13 s/n 00401 OO 2014 H droCAD Software Solutions LLC Pacte 3 Tc Length Slope Velocity Capacity Description min feet ft/ft) (ft/sec) (cfs 6.0 Direct Entry, Summary for Subcatchment PS12: Runoff - 0.00 cfs @ 14.78 hrs, Volume= 25 cf, Depth= 0.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type ill 24-hr 1" Storm Rainfall=1.00" Areas CN Description 12,822 74 >75% Grass cover, Good, HSG C 12,822 100,00% Pervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft) (ft/sec) (cfs 6.0 Direct Entry, Summary for Subcatchment PS2: Runoff - 0.19 cfs @ 12.09 hrs, Volume= 578 cf, Depth= 0.50" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 1" Storm Rainfall=1.00" Area (so CN Description 2,572 74 >75% Grass cover, Good, HSG C 6,226 98 Paved parking, HSG C 1,474 98 Roofs, HSG C 3,496 98 Unconnected pavement, HSG C 13,767 94 Weighted Average 2,572 18.68% Pervious Area 11,195 81.32% Impervious Area 3,495 31.22% Unconnected Tc Length Slope Velocity Capacity Description min) (feet ft/ft ftlsec cfs 6.0 Direct Entry, Summary for Subcatchment PS3: Runoff = 0.08 cfs @ 12.09 hrs, Volume= 259 cf, Depth= 0.36" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 1" Storm Rainfall=1.00" 505 Sutton Proposed Conditions Hydrologic Analysis Type III 24-hr ?"Storm Rainfall=9.00" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 sin 00401 02014 H droCAD Software Solutions LLC Page 4 _ Area (sf) CN Description 2,355 74 >75% Grass cover, Good, HSG C 5,874 98 Paved parking, HSG C 34 98 Roofs, HSG C 378 98 Unconnected pavement, HSG C 8,641 91 Weighted Average 2,365 27.25% Pervious Area 6,286 72.75% Impervious Area 378 6.01% Unconnected Tc Length Slope Velocity Capacity Description min feet ftlft ftlsec cfs 6.0 - Direct Entry, Summary for Subcatchment PS4•. Runoff - 0.01 cfs @ 12.32 hrs, Volume= 83 cf, Depth= 0.08" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36,00 hrs, dt= 0.01 hrs Type III 24-hr 1"Storm Rainfall=1.00" Areas CN Description 8,762 74 >75% Grass cover, Good, HSG C 3,160 98 Paved parking, HSG C 11,9 22 80 Weighted Average _,...- 8,762 73.49% Pervious Area 3,160 26.51% Impervious Area Tc Length Slope Velocity Capacity Description min _(feet) (ft/ft) (ftlsec) (cfs) 6.0 Direct Entry, Summary for Subcatchment PS5: Runoff = 0.07 cfs @ 12.10 hrs, Volume= 243 cf, Depth= 0.25" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 1" Storm Rainfall=1.00" Area_(sf) CN Description 4,846 74 >75% Grass cover, Good, HSG C 5,452 98 Paved parking, HSG C 95 98 Roofs, HSG C 1,133 98 Unconnected pavement, HSG C 11,526 88 Weighted Average 4,846 42.04% Pervious Area 6,680 57.96% Impervious Area 1,133 16.96% Unconnected i I. 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr I"Storm Rainfall=l.00" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10.00-13 s/n 00401 ©2014 H droCAD Software Solutions LLC Page 5 To Length Slope Velocity Capacity Description min feet ftift ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS6: Runoff - 0.00 cfs @ 14.78 hrs, Volume= 10 of, Depth= 0.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Spam 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 1" Storm Rainfall=1.00" Area (sD CN Description 5,343 74 >75% Grass cover, Good, HSG C 5,343 100.00% Pervious Area To Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS7: Runoff - 0.00 cfs @ 14.78 hrs, Volume= 5 of, Depth= 0.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36,00 hrs, dt= 0.01 hrs Type III 24-hr 1" Storm Rainfall=1.00" Area_(so CN Description 2,666 74 >75% Grass cover, Good, HSG C 2,666 100.00% Pervious Area To Length Slope Velocity Capacity Description min feet ft/ft) (fUsec) (cfs 6.0 Direct Entry, Summary for Subcatchment PS8: Runoff - 0.00 cfs @ 14.79 hrs, Volume= 40 of, Depth= 0.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 1" Storm Rainfall=1.00" Area (so CN Description 20,900 74 >75% Grass cover, Good, HSG C 20,900 100.00% Pervious Area i , 505 Sutton Proposed Conditions Hydrologic Analysis Type II124-hr 1"Storm Rainfall=1.00" Prepared by Microsoft Printed 8/29/2019 HydroCAD®10.00-13 s/n 00401 ©2014 HydroCAD Software Solutions LLC Page 6 Tc Length Slope Velocity Capacity Description Amin) (feet) (ft/ft) (ft/sec) (cfs) 4.9 50 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.10" 1.3 210 0.0290 2.74 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 0.0 20 0.3500 9.52 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 6.2- 280 Total Summary for Subcatchment PSBA: Runoff = 0.05 cfs @ 12.08 hrs, Volume= 168 cf, Depth= 0.79" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 1"Storm Rainfall=1,00" Area (sf) CN _Description 587 98 Roofs, HSG C 1,965. 98 Unconnected pavement, HSG C 2,552 98 Weighted Average 2,552 100.00% Impervious Area 1,965 77.00% Unconnected Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS9: Runoff = 0.37 cfs @ 12.08 hrs, Volume= 1,184 cf, Depth= 0.79" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 1" Storm Rainfall=1.00" Area (so CN Description 17,961 98 Roofs, HSG C 17,961 100.00% Impervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft) (ft/sec) (cfs 6.0 Direct Entry, Summary for Reach DP1: [40) Hint: Not Described (Outflow=Inflow) Inflow Area = 126,309 sf, 78.59% Impervious, Inflow Depth > 0.17" for 1" Storm event Inflow - 0.15 cfs @ 12.46 hrs, Volume= 1,809 cf Outflow -- 0.15 cfs @ 12.46 hrs, Volume= 1,809 cf, Atten= 0%, Lag= 0.0 min 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr I"Storm Rainfall=9,00" Prepared by Microsoft Printed 8/29/2019 H droCADO 10,00-13 s/n 00401 O 2014 H droCAD Software Solutions LLC Page 7 Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Summary for Reach DP2: (40] Hint: Not Described (Outflow=Inflow) Inflow Area = 23,452 sf, 10.88% Impervious, Inflow Depth = 0.02" for 1" Storm event Inflow 0.00 cfs @ 12,55 hrs, Volume= 42 cf Outflow - 0.00 cfs @ 12.55 hrs, Volume= 42 cf, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0,00-36.00 hrs, dt= 0.01 hrs 13 Summary for Reach DP3: [40] Hint: Not Described (Outflow=Inflow) Summary for Reach DP4: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 12,822 sf, 0.00% Impervious, Inflow Depth = 0.02" for 1" Storm event Inflow - 0.00 cfs @ 14.78 hrs, Volume= 25 cf Outflow -- 0,00 cfs @ 14.78 hrs, Volume= 25 cf, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Summary for Reach DP5: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 2,666 sf, 0.00% Impervious, Inflow Depth = 0.02" for 1" Storm event Inflow = 0.00 cfs @ 14.78 hrs, Volume= 5 cf Outflow = 0.00 cfs @ 14.78 hrs, Volume= 5 cf, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Summary for Pond '[P: Retain It Inflow Area = 31,945 sf, 75.90% Impervious, Inflow Depth = 0,55" for 1" Storm event Inflow - 0.45 cfs @ 12.09 hrs, Volume= 1,453 cf Outflow = 0.11 cfs @ 12.49 hrs, Volume= 1,453 cf, Atten= 76%, Lag= 24,0 min Discarded = 0.03 cfs @ 11.75 hrs, Volume= 1,225 cf Primary - 0.07 cfs @ 12.49 hrs, Volume= 228 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 1 3 505 Sutton Proposed Conditions Hydrologic Analysis Type II/24-hr I"Storm Rainfall=1.00" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 s/n 00401 0 2014 H droCAD Software Solutions LLC Page 8 Peak Elev= 162.66' @ 12.49 hrs Surf.Area= 1,460 sf Storage=464 cf Plug-Flow detention time= 71.8 min calculated for 1,452 of(100% of inflow) Center-of-Mass det. time= 71.8 min ( 873.7- 801.9) Volume Invert Avail.Stora a Storage Description #1A 162.00' 867 cf 146.00'W x 10.001 x 6.17'H Field A 7,543 cf Overall - 5,376 of Embedded = 2,167 cf x 40.0% Voids #2A 162.50' 3,870 cf retain it 4.0' x 18 Inside#1 Inside= 84.0"W x 48.0"H => 28.87 sf x 8.001 = 230.9 cf Outside= 96.0"W x 56.0"H => 37.33 sf x 8.00'L = 298.7 of 18 Rows adjusted for 286.9 of perimeter wall 4,737 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routi qg Invert Outlet Devices #1 Primary 162.50' 12.0" Round Culvert L= 112.0' Ke= 0.500 Inlet/Outlet Invert= 162.50'/ 153,84' S= 0.0773 '1' Cc= 0.900 n= 0.012, Flaw Area= 0.79 sf #2 Device-1 162.50' 6.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 164.50' 3.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 166.40' 12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Discarded 162.00' 1.020 in/hr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.03 cfs @ 11.75 hrs HW=162.05' (Free Discharge) t--S=Exfiltration (Exfiltration Controls 0.03 cfs) Primary OutFlow Max=0.07 cfs @ 12.49 hrs HW=162.66' TW=0.00' (Dynamic Tailwater) t =Culvert (Passes 0.07 cfs of 0.11 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.07 cfs @ 1.35 fps) 3=Orlfice/Grate ( Controls 0.00 cfs) Orifice1Grate ( Controls 0.00 cfs) Summary for Pond 2P: Retain It Inflow Area = 13,767 sf, 81.32% Impervious, Inflow Depth = 0.50" for 1" Storm event Inflow - 0.19 cfs @ 12.09 hrs, Volume= 578 cf Outflow = 0.02 cfs @ 11.88 hrs, Volume= 578 cf, Atten= 89%, Lag= 0.0 min Discarded 0.02 cfs @ 11.88 hrs, Volume= 578 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Peak Elev= 162.53' @ 12.90 hrs Surf.Area= 900 sf Storage- 201 cf Plug-Flow detention time= 76.3 min calculated for 578 cf(100% of inflow) Center-of-Mass det. time= 76.3 min ( 909.1 - 832.8) 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr I"Storm Rainfall=1.00" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 s/n 00401 ©2014 H droCAD Software Solutions LLC Page 9 Volume Invert Avall.Stora e Storage Description #1A 162.00' 400 cf 60.00'W x 18.001 x 4.67'H Field A 4,200 cf Overall - 3,200 cf Embedded = 1,000 cf x 40.0% Voids #2A 162.60' 2,311 cf retain it 3.5' x 12 Inside#1 Inside= 84.0"W x 42.0"H => 25.10 sf x 8,001 = 200.8 cf Outside= 96,0"W x 50,0"H => 33.33 sf x 8.001 = 266.7 cf 6 Rows adjusted for 98.2 of perimeter wall 2,711 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary T 162.50' 12.0" Round Culvert L= 23.0' Ke= 0.500 Inlet/Outlet Invert= 162.50' 1 158.32' S= 0.1817 '1' Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 162,90' 4.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 163,80' 3.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 164.80' 4.0"Vert. Orifice/Grate C= 0.600 #5 Device 1 165,40' 12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #6 Discarded 162,00' 1.020 in/hr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.02 cfs @ 11.88 hrs HW=162.05' (Free Discharge) 1-6=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=162.00' TW=0.00' (Dynamic Tailwater) L1=Culvert ( Controls 0.00 cfs) 2=00fice/Grate ( Controls 0,00 cfs) 3=Orifice/Grate ( Controls 0.00 cfs) =Orifice/Grate ( Controls 0.00 cfs) -Orifice/Grate ( Controls 0.00 cfs} Summary for Pond 3P: Retain It Inflow Area = 13,844 sf,100.00% Impervious, Inflow Depth = 0.79" for 1" Storm event Inflow - 0.28 cfs @ 12,08 hrs, Volume= 912 cf Outflow 0.03 cfs @ 12.93 hrs, Volume= 912 cf, Atten= 91%, Lag= 50.6 min Discarded = 0.01 cfs @ 11.30 hrs, Volume= 854 cf Primary - 0.01 cfs @ 12.93 hrs, Volume= 59 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs/ 3 Peak Elev= 163,57' @ 12.93 hrs Surf.Area= 612 sf Storage= 393 of Plug-Flow detention time= 216.2 min calculated for 912 cf(100% of inflow) Center-of-Mass det. time= 216.2 min ( 1,004.0- 787.9 ) 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr I"Storm Rainfall=1,00" Prepared by Microsoft Printed 8/29/2019 I_iydroCAD® 10.00-1.3_s/n 00401 ©2014 HydroCAD Software Solutions LLC Page 10 Volume Invert AvaiLStora a Storage Description #1A 162.50' 249 cf 34.00'W x 18.00'L x 3.67'H Field A 2,244 cf Overall - 1,621 cf Embedded = 623 cf x 40.0% Voids #2A 163.00' 1,084 of retain it 2.6' x 8 Inside#1 Inside= 84.0"W x 30.0"H => 17.56 sf x 8.00'L = 140.4 of Outside= 96.0"W x 38.0"H => 25.33 sf x 8.001 = 202.7 cf 4 Rows adjusted for 39.6 cf perimeter wall 1,333 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 163.50' 12.0" Round Culvert L= 23.0' Ke= 0.500 Inlet/Outlet Invert= 163.50'/ 158.32' S= 0.2252 T Cc= 0,900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 163.50' 4.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 164.30' 6.0"Vert, Orifice/Grate C= 0.600 #4 Device 1 165.20' 12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Discarded 162.50' 1.020 inlhr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.01 cfs @ 11.30 hrs HW=162.54' (Free Discharge) t-5=Exf1ltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.01 cfs @ 12,93 hrs HW=163.57' TW=0.00' (Dynamic Tailwater) t` =Culvert (Passes 0.01 cfs of 0.02 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.01 cfs @ 0.91 fps) 3=Orifice/Grate (Controls 0.00 cfs) =Orifice/Grate (Controls 0.00 cfs) Summary for Pond 4P: Detention System 1 Inflow Area = 43,305 sf, 92,68% Impervious, Inflow Depth = 0.37" for 1" Storm event Inflow - 0.43 cfs @ 12.09 hrs, Volume= 1,319 cf Outflow 0.04 cfs @ 12.98 hrs, Volume= 1,196 cf, Atten= 90%, Lag= 53.3 min Primary - 0.04 cfs @ 12.98 hrs, Volume= 1,196 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36,00 hrs, dt= 0.01 hrs/3 Peak Elev= 164.06' @ 12.98 hrs Surf.Area= 5,300 sf Storage= 683 cf Plug-Flow detention time= 313.5 min calculated for 1,196 cf(91% of inflow) Center-of-Mass det, time= 267.8 min ( 1,091.8 - 824.0) Volume Invert AvaiLStorage Storage Description #1A 163,90' 329 cf 106.00'W x 50.001 x 2.67'H Field A 14,133 cf Overall - 13,312 cf Embedded = 821 cf x 40.0% Voids #2A 163.90' 8,530 cf retain_it 2.0' x 78 Inside#1 Inside= 84.0"W x 24.0"H => 13.78 sf x 8.00'L= 110.3 cf Outside= 96.0"W x 32.0"H => 21.33 sf x 8.00'L= 170.7 cf 13 Rows adjusted for 71.8 cf perimeter wall 8,859 of Total Available Storage 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 1"Storm Rainfall=1.00" Prepared by Microsoft Printed 8/29/2019 H drq AD@ 10.00-13 s/n 00401 O 2014 H droCAD Software Solutions LLC Page 11 Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 159.00' 12.0" Round Culvert L= 34.0' Ke= 0.500 Inlet/Outlet Invert= 159,00'1 158.32' S= 0.0200 T Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 163.90' 3.0"Vert. Orifice/Grate C= 0,600 #3 Device 1 164.30' 8.0"W x 2.0" H Vert. OrificelGrate C= 0.600 #4 Device 1 165.60' 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 Primary OutFlow Max=0.04 cfs @ 12.98 hrs HW=164.06' TW=0.00' (Dynamic Tallwater) 't--1-Culvert (Passes 0,04 cfs of 8.07 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.04 cfs @ 1.34 fps) 3=Orifice/Grate ( Controls 0.00 cfs) Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 5P: Infiltration System 4 Inflow Area = 15,214 sf,100.00% Impervious, Inflow Depth = 0,79" for 1" Storm event Inflow - 0.31 cfs @ 12.08 hrs, Volume= 1,003 cf Outflow = 0.05 cfs @ 11.86 hrs, Volume= 1,003 cf, Atten= 84%, Lag= 0.0 min Discarded 0.05 cfs @ 11.86 hrs, Volume= 1,003 cf Primary - 0.00 cfs @ 0,00 hrs, Volume= 0 cf Routing by Dyn-Star-Ind method, Time Span= 0.00-36,00 hrs, dt= 0.01 hrs/3 Peak Elev= 165.84' @ 12.66 hrs Surf.Area= 2,116 sf Storage= 287 cf Plug-Flow detention time= 35.3 min calculated for 1,003 cf (100% of inflow) Center-of-Mass det. time= 35,3 min ( 823.2 - 787.9 ) Volume Invert Avail.Stora a Storage Description #1 165.50' 635 cf Custom Stage Data (Prismatic)Listed below (Recaic) 6,708 cf Overall - 5,120 cf Embedded = 1,588 cf x 40.0% Voids #2 166.00' 3,308 cf retain-it 2.0' x 30 Inside#1 Inside= 84.0"W x 24.0"H => 13.78 sf x 8.001 = 110.3 cf Outside= 96.0"W x 32.0"H => 21,33 sf x 8.00'L = 170.7 of 3,943 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store feet s -ft cubic-feet cubic-feet 165.50 2,116 0 0 168.67 2,116 6,708 6,708 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr I"Storm Rainfall=1,07" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 sln 00401 O 2014 H droCAD Software r Solutions t,LC Pa e 12 Device Routing Invert Outlet Devices #1 Primary 165.40' 12.0" Round Culvert L= 30.0' Ke= 0.500 Inlet/Outlet Invert= 165.40' 1 164.95' S= 0.0150 '1' Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 167.00' 12.0"W x 3.0" H Vert. 0rificelGrate C= 0.600 #3 Device 1 167.80' 9.0" Vert. Orifice/Grate C= 0.600 #4 Device 1 168.00' 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 #5 Discarded 165.50' 1.020 inlhr Exfiltration over Surface area Phase-ln= 0.01' Discarded OutFlow Max=0.05 cfs @ 11.86 hrs HW=165.53' (Free Discharge) L5=Exfiltration (Exfiltration Controls 0.05 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=165.50' TW=163.90' (Dynamic Tailwater) LE=Culvert (Passes 0.00 cfs of 0.04 cfs potential flow) =OrificelGrate ( Controls 0.00 cfs) =OrificelGrate ( Controls 0.00 cfs) =Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond GP: Infiltration Trench [871 Warning: Oscillations may require smaller dt or Finer Routing (severity=42) Inflow Area = 2,552 sf,100.00% Impervious, Inflow Depth = 0.79" for 1" Storm event Inflow = 0.05 cfs @ 12.08 hrs, Volume= 168 of Outflow -- 0.01 cfs @ 12.55 hrs, Volume= 168 of, Atten= 83%, Lag= 27.9 min Discarded = 0.01 cfs @ 12.54 hrs, Volume= 167 of Primary = 0.00 cfs @ 12.55 hrs, Volume= 1 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Peak Elev= 170.50' @ 12.55 hrs Surf.Area=232 sf Storage= 70 cf Plug-Flow detention time= 214.0 min calculated for 168 of(100% of inflow) Center-of-Mass det, time= 214.0 min ( 1,001.9- 787.9) Volume Invert Avaii.Stora a Storage Description #1 169.00, 70 of Stone Trench (Prismatic)Listed below (Recalc) 174 of Overall x 40.0% Voids #2 170.50' 12 of Area Over Trench (Prismatic)Listed below (Recalc) 81 of Total Available Storage Elevation Surf.Area Inc.Store Cum.Store feet s -ft cubic-feet cubic-feet 169.00 116 1 0 0 170.50 116 174 174 Elevation Surf.Area 1nc.Store Cum.Store feet s -ft cubic-feet cubic-feet 170.50 116 0 0 170.60 116 12 12 i I 505 Sutton Proposed Conditions Hydrologic Analysis Type Ill 24-hr 9"Storm Rainfall=1.00" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 s/n 00401 O 2014 H droCAD Software Solutions LLC -Page 13 i Device Routing Invert Outlet Devices #1 Primary 170.60' 70.0' long x 1,0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 #2 Discarded 169.00' 1.020 inlhr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.01 cfs @ 12.54 hrs HW=170.50' (Free Discharge) t--2=Exflitration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.00 cfs @ 12.55 hrs HW=170.50' TW=0.00' (Dynamic Tailwater) t--1=Broad-Crested Rectangular Weir (Weir Controls 0.00 cfs @ 0.07 fps) 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 2-Year Rainfall=3,20" Prepared by Microsoft Printed 8/29/2019 HydroCAD®10.00-13 s/n_00401 ®2014 HydroCAD Software Solutions LLC Paae 14 Summary for Subcatchment PSI: Runoff - 1.89 cfs @ 12.08 hrs, Volume= 6,192 cf, Depth= 2.64" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 2-Year Rainfall=3.20" Area (so CN Descri tion 3,170 74 >75% Grass cover, Good, HSG C 23,273 98 Paved parking, HSG C 661 98 Roofs, HSG C 987 98 Unconnected pavement, HSG C 28,091 95 Weighted Average 3,170 _ 11.28% Pervious Area 24,921 88.72% Impervious Area 987 3.96% Unconnected Tc Length Slope Velocity Capacity Description min feet ft/ft) (ft/sec) (cfs 6.0 Direct Entry, Summary for Subcatchment PSI0: Runoff 0.99 cfs @ 12.08 hrs, Volume= 3,423 cf, Depth= 2.97" Runoff by SCS TR-20 method, UH-SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 2-Year Rainfall=3.20" Area (sq CN Description 13,844 98 Roofs, HSG C 13,844 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment PSI 1: Runoff - 1.08 cfs @ 12.08 hrs, Volume= 3,762 cf, Depth= 2.97" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 2-Year Rainfall=3.20" Area (so CN Description 15,214 98 Roofs, HSG C 15,214 100.00% Impervious Area 505 Sutton Proposed Conditions Hydrologic Analysis Type !l124-hr 2-Year Rainfall=3.20" Prepared by Microsoft Printed 8/29/2019 Hyd„roCAD® 10.00-13 sln 00401 ©2014 HydroCAD Software Solutions LLC Page 15 Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS12: i Runoff -- 0.34 cfs @ 12.10 hrs, Volume= 1,109 cf, Depth= 1.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 2-Year Rainfall=3.20" Areas CN Description 12,822 74 >75% Grass cover, Good, HSG C 12,822 100.00% Pervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS2: Runoff = 0.90 cfs @ 12.08 hrs, Volume= 2,918 cf, Depth= 2.54" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 2-Year Rainfall=3.20" Areas CN Description * 2,572 74 >75% Grass cover, Good, HSG C 6,226 98 Paved parking, HSG C 1,474 98 Roofs, HSG C 3,495 98 Unconnected pavement, HSG C 13,767 94 Weighted Average 2,572 18.68% Pervious Area 11,195 81.32% Impervious Area 3,495 31.22% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment PS3: Runoff - 0.52 cfs @ 12.09 hrs, Volume= 1,626 cf, Depth= 2.26" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 2-Year Rainfall=3.20" 505 Sutton Proposed Conditions Hydrologic Analysis Type III 24-hr 2-Year Rainfall=3.20" Prepared by Microsoft Printed 8/29/2019 H droCAD®10.00-13 sln 00401 cC 2014 H droCAD Software Solutions LLC Page 16 Areas CN Description 2,355 74 >75% Grass cover, Good, HSG C 5,874 . 98 Paved parking, HSG C 34 98 Roofs, HSG C 378 98 Unconnected pavement, HSG C 8,641 91 Weighted Average 2,355 27,25% Pervious Area 6,286 72.75% Impervious Area 378 6.01% Unconnected Te Length Slope Velocity Capacity Description min feet ft/ft ftlsec cfs 6.0 Direct Entry, Summary for Subcatchment PS4. Runoff - 0.45 cfs @ 12.09 hrs, Volume= 1,393 cf, Depth= 1.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0,01 hrs Type III 24-hr 2-Year Rainfall=3.20" Areas CN Description 8,762 74 >75% Grass cover, Good, HSG C 3,160 98 Paved parking, HSG C 11,922 80 Weighted Average 8,762 73.49% Pervious Area 3,160 26.51% Impervious Area Tc Length Slope Velocity Capacity Description min feet ftlft ftlsec cfs 6.0 Direct Entry, Summary for Subcatchment PS& Runoff - 0.62 cfs @ 12.09 hrs, Volume= 1,918 cf, Depth= 2.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 2-Year Rainfall=3,20" Areas CN Description 4,846 74 >75% Grass cover, Good, HSG C 5,452 98 Paved parking, HSG C 95 98 Roofs, HSG C 1,133 98 Unconnected pavement, HSG C 11,526 88 Weighted Average 4,846 42.04% Pervious Area 6,680 57.96% Impervious Area 1,133 16.96% Unconnected i 505 Sutton Proposed Conditions Hydrologic Analysis Type If! 24-hr 2-Year Rarnfafl=3.20" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10.00-13 s/n 00401 0 2014 H droCAD Software Solutions LLC Page 17 Tc Length Slope Velocity Capacity Description _ (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment PSS: Runoff = 0.14 cfs @ 12,10 hrs, Volume= 462 cf, Depth= 1.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 2-Year Rainfall=3.20" Area (so CN Description 5,343 74 >75% Grass cover, Good, HSG C 5,343 100.00% Pervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ftlsec cfs 6.0 Direct Entry, Summary for Subcatchment PS7: Runoff - 0.07 cfs @ 12.10 hrs, Volume= 231 cf, Depth= 1.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 2-Year Rainfall=3.20" Area (so CN Description 2,666 74 >75% Grass cover, Good, HSG C 2,666 100.00% Pervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS8: Runoff 0.55 cfs @ 12.10 hrs, Volume= 1,807 cf, Depth= 1.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 2-Year Rainfall=3.20" Area (sf) CN Description 20,900 74 >75% Grass cover, Good, HSG C 20,900 100,00% Pervious Area 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 2-Year Rainfall=3.20" Prepared by Microsoft Printed 8/29/2019 H droCAD@ 10.00-13 s/n 00401 ©2014 H droCAD Software Solutions LLC Pa e 18 Te Length Slope Velocity Capacity Description min feet ftlft ftlsec cfs 4.9 50 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.10" 1.3 210 0.0290 2.74 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 0.0 20 0.3500 9.52 Shallow Concentrated Flow, Unpaved Kv= 16.1 f s 6.2 280 Total Summary for Subcatchment PS8A: Runoff - 0.18 cfs @ 12.08 hrs, Volume= 631 cf, Depth= 2.97" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 2-Year Rainfall=3.20" Areas CN Descri Lion 587 98 Roofs, HSG C 1,965 98 Unconnected pavement, HSG C 2,552 98 Weighted Average 2,552 100.00% Impervious Area 1,965 77.00% Unconnected Tc Length Slope Velocity Capacity Description min feet ft/ft fUsec cfs 6.0 Direct Entry, Summary for Subcatchment PS9: Runoff - 1.28 cfs @ 12.08 hrs, Volume= 4,442 cf, Depth= 2,97" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 2-Year Rainfall=3.20" Areas CN Description 17,961 98 Roofs, HSG C 17,961 100.00% Impervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft) (fUsec) (cfs 6.0 Direct Entry, Summary for Reach DP1: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 126,309 sf, 78.59% Impervious, Inflow Depth > 1.60" for 2-Year event Inflow = 2.86 cfs @ 12.14 hrs, Volume= 16,876 cf Outflow - 2.86 cfs @ 12.14 hrs, Volume= 16,876 cf, Atten= 0%, Lag= 0.0 min I 505 Sutton Proposed Conditions Hydrologic Analysis Type lii 24-hr 2-Year Rainfaii=3.20" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 s/n 00401 ©2014 H droCAD Software Solutions LLC Page 19 Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 1 3 Summary for Reach DP2: [40] Hint: Not Described (Outflow=lnflow) Inflow Area = 23,452 sf, 10.88% impervious, Inflow Depth - 1.09" for 2-Year event Inflow - 0.72 cfs @ 12.09 hrs, Volume= 2,127 cf Outflow = 0.72 cfs @ 12.09 hrs, Volume= 2,127 cf, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs i 3 Summary for Reach DP3: [40] Hint: Not Described (Outflow=lnflow) Summary for Reach DP4: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 12,822 sf, 0.00% Impervious, Inflow Depth = 1.04" for 2-Year event Inflow - 0.34 cfs @ 12.10 hrs, Volume= 1,109 cf Outflow 0.34 cfs @ 12.10 hrs, Volume= 1,109 cf, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs/3 Summary for Reach DPS: [40] Hint: Not Described (Outflow=lnflow) Inflow Area = 2,666 sf, 0.00% Impervious, Inflow Depth = 1.04" for 2-Year event Inflow - 0.07 cfs @ 12.10 hrs, Volume= 231 cf Outflow = 0.07 cfs @ 12.10 hrs, Volume= 231 cf, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs/3 Summary for Pond I P: Retain It Inflow Area = 31,945 sf, 75.90% Impervious, Inflow Depth = 2.45" for 2-Year event Inflow - 1.94 cfs @ 12.09 hrs, Volume= 6,530 cf Outflow = 0.91 cfs @ 12.25 hrs, Volume= 6,530 cf, Atten= 53%, Lag= 9.9 min Discarded = 0.03 cfs @ 8.97 hrs, Volume= 2,439 cf Primary - 0.88 cfs @ 12.26 hrs, Volume= 4,090 cf Routing by Dyn-Stor-Ind method, Time Span 0.00-36.00 hrs, dt= 0.01 hrs 13 505 Sutton Proposed Conditions Hydrologic Analysis Type III 24-hr 2-Year Rainfall=3.20" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10.00-13 s/n 00401 02014 H droCAD Software Solutions LLC Pa e 20 Peak Elev= 163.61' @ 12.25 hrs Surf.Area= 1,460 sf Storage= 1,502 cf Plug-Flow detention time= 54.4 min calculated for 6,528 cf(100% of inflow) Center-of-Mass det. time= 54.4 min ( 829.7- 775.4 ) Volume Invert Avail.Stora e Storage Description #1A 162.00' 867 cf 146.00'W x 10.001 x 6.17'H Field A 7,543 cf Overall - 5,376 cf Embedded = 2,167 cf x 40.0%Voids #2A 162.50' 3,870 cf retain_it 4.0' x 18 Inside#1 Inside= 84.0"W x 48.0"H => 28.87 sf x 8.00'L= 230.9 cf Outside= 96.0"W x 56.0"H => 37.33 sf x 8.001 = 298.7 cf 18 Rows adjusted for 286.9 cf perimeter wall 4,737 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 162.50' 12.0" Round Culvert L= 112.0' Ke= 0.500 Inlet/Outlet Invert= 162.50'/ 153.84' S= 0.0773 T Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 162.50' 6.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 164.50' 3.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 166.40' 12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Discarded 162.00' 1.020 inlhr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.03 cfs @ 8.97 hrs HW=162.05' (Free Discharge) tom=Exfiltration (Exfiltration Controls 0.03 cfs) Primary OutFlow Max=0.88 cfs @ 12.25 hrs HW=163.61' TW=0.00' (Dynamic Tailwater) t- =Culvert (passes 0.88 cfs of 2.95 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.88 cfs @ 4.46 fps) 3=Orifice/Grate ( Controls 0.00 cfs) Orifice/Grate ( Controls 0.00 cfs) Summary for Pond 2P: Retain It Inflow Area = 13,767 sf, 81.32% Impervious, Inflow Depth = 2,54" for 2-Year event Inflow - 0.90 cfs @ 12.08 hrs, Volume= 2,918 cf Outflow = 0.33 cfs @ 12.33 hrs, Volume= 2,918 cf, Atten= 63%, Lag= 15.0 min Discarded = 0.02 cfs @ 9.85 hrs, Volume= 1,551 cf Primary - 0.31 cfs @ 12.33 hrs, Volume= 1,368 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0,01 hrs 13 Peak Elev= 163.62' @ 12.33 hrs Surf.Area= 900 sf Storage= 977 cf Plug-Flow detention time= 136.7 min calculated for 2,918 cf(100% of inflow) Center-of-Mass det. time= 136.7 min (923.8-787.1 ) 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 2-Year Rainfall=3.20" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10,00-13 sIn 00401 OO 2014 H draCAD Software Solutions LLC Pac ie 21 Volume Invert Avail.Storage Storage Description #1A 162.00' 400 cf 50.00'W x 18.001 x 4.67'H Field A 4,200 cf Overall - 3,200 cf Embedded = 1,000 cf x 40.0% Voids #2A 162.50' 2,311 cf retain_it 3.5' x 12 Inside#1 Inside= 84.0"W x 42.0"H => 25.10 sf x 8.00'L = 200.8 cf Outside= 96.0"W x 50.0"H => 33.33 sf x 8,001 = 266.7 cf 6 Rows adjusted for 98,2 cf perimeter wall 2,711 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 162.50' 12.0" Round Culvert L= 23.0' Ke= 0.500 Inlet/Outlet Invert= 162.50'/ 158.32' S= 0.1817 T Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 162.90' 4.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 163,80' 3.0"Vert, Orifice/Grate C= 0.600 #4 Device 1 164.80' 4.0"Vert. Orifice/Grate C= 0.600 #5 Device 1 165.40' 12.0" Horiz. Orifice/Grate C= 0,600 Limited to weir flow at low heads #6 Discarded 162.00' 1.020 in/hr Exfiltration over Surface area Phase-In= 0,01' Discarded OutFlow Max=0.02 cfs @ 9.85 hrs HW=162.05' (Free Discharge) t--6=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.31 cfs @ 12.33 hrs HW=163.62' TW=0.00' (Dynamic Tailwater) t--tcuivert (Passes 0,31 cfs of 2.97 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.31 cfs @ 3.67 fps) 3=Orifice/Grate ( Controls 0.00 cfs) =Orifice/Grate ( Controls 0.00 cfs) �Orifice1Grate { Controls 0.00 cfs) Summary for Pond 3P: Retain It Inflow Area = 13,844 sf,100.00% Impervious, Inflow Depth = 2.97" for 2-Year event Inflow - 0.99 cfs @ 12.08 hrs, Volume= 3,423 cf Outflow - 0.65 cfs @ 12.17 hrs, Volume= 3,423 cf, Atten= 34%, Lag= 5.3 min Discarded = 0.01 cfs @ 7.41 hrs, Volume= 1,353 cf Primary = 0.63 cfs @ 12.17 hrs, Volume= 2,071 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs / 3 Peak Elev= 164.60' @ 12.17 hrs Surf.Area= 612 sf Storage= 879 cf Plug-Flow detention time= 117.4 min calculated for 3,423 of(100% of inflow) Center-of-Mass det. time= 117.4 min ( 873.8 -756.4 ) 505 Sutton Proposed Conditions-Hydrologic Analysis Type 11124-hr 2-Year Rainfall=3.20" Prepared by Microsoft Printed 8/2912019 HydroCADO 10 00.-.13_. s/n 00401 _©2014 HydroCAD Software Solutions LLC Page 22 Volume Invert Avail.Stora e Storage Description #1A 162.50' 249 of 34.00'W x 18.00'L x 3.67'H Field A 2,244 cf Overall - 1,621 cf Embedded = 623 cf x 40.0% Voids #2A 163.00' 1,084 cf retain_it 2.5' x 8 Inside#1 Inside= 84.0"W x 30,0"H => 17.66 sf x 8.00'L = 140.4 cf Outside= 96.0"W x 38.0"H => 25.33 sf x 8.001 = 202.7 cf 4 Rows adjusted for 39.6 of pedmeter wall 1,333 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Prima 163.50 12.0 Round Culvert L= 23.0'- Primary " Ke= 0,500 Inlet 1 Outlet Invert= 163.50' / 158.32' S= 0.2252 T Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 163.50' 4.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 164.30' 6.0" Vert, Orifice/Grate C= 0,600 #4 Device 1 165.20' 12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Discarded 162.50' 1.020 inlhr Extiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.01 cfs @ 7.41 hrs HW=162.54' (Free Discharge) t--S=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.63 cfs @ 12.17 hrs HW=164.60' TW=0.00' (Dynamic Tailwater) tL =Culvert (Passes 0.63 cfs of 2.92 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.41 cfs @ 4.65 fps) 3=OrificelGrate (Orifice Controls 0.23 cfs @ 1.86 fps) =Orifice/Grate ( Controls 0.00 cfs) Summary for Pond 4P: Detention System 1 Inflow Area = 43,305 sf, 92.68% Impervious, Inflow Depth = 1.72" for 2-Year event Inflow - 1.89 cfs @ 12.08 hrs, Volume= 6,192 cf Outflow = 0,40 cfs @ 12.50 hrs, Volume= 6,037 cf, Atten= 79%, Lag= 25.0 min Primary - 0.40 cfs @ 12.50 hrs, Volume= 6,037 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36,00 hrs, dt= 0.01 hrs 13 Peale Elev= 164.56' @ 12.50 hrs Surf.Area= 5,300 sf Storage= 2,908 cf Plug-Flow detention time= 200.3.min calculated for 6,035 cf(97% of inflow) Center-of-Mass det, time= 185.2 min (966.1 - 781.0) Volume Invert Ayall,Storage Storage Description: #1A 163.90' 329 cf 106.00'W x 50.00%x 2.67'H Field.A.,..,.,..,, 14,133 cf Overall - 13,312 of Embedded = 821 cf x 40.0% Voids #2A 163,90' 8,530 cf retain_it 2.0' x 78 Inside#1 Inside= 84.0"W x 24.0"H => 13.78 sf x 8.001 = 110.3 of Outside= 96.0"W x 32.0"H => 21.33 sf x 8.001 = 170.7 cf 13 Rows adjusted for 71.8 cf perimeter wall 8,859 cf Total Available Storage k I j 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 2-YearRainfall=3.20" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 sln 00401 ©2014 H droCAD Software Solutions LLC Page 23 i Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 159.00' 12.0" Round Culvert L= 34.0' Ke= 0.500 Inlet 1 Outlet Invert= 159.00' 1 158.32' S= 0.0200 T Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 163.90' 3.0" Vert. Orifice/Grate C= 0.600 #3 Device 1 164.30' 8.0" W x 2.0" H Vert. Orifice/Grate C= 0.600 #4 Device 1 165.60' 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 Primary OutFlow Max=0.40 cfs @ 12.50 hrs HW=164.56' TW=0.00' (Dynamic Tailwater) 'L1=Culvert (Passes 0.40 cfs of 8.51 cfs potential flow) 2=OrificelGrate (Orifice Controls 0.17 cfs @ 3.53 fps) 3=Orifice/Grate (Orifice Controls 0.22 cfs @ 2.02 fps) =Broad-Crested Rectangular Weir ( Controls 0,00 cfs) Summary for Pond 5P: Infiltration System 4 Inflow Area = 15,214 sf,100.00% Impervious, Inflow Depth = 2.97" for 2-Year event Inflow = 1.08 cfs @ 12.08 hrs, Volume= 3,762 cf Outflow - 0.05 cfs @ 10.66 hrs, Volume= 3,762 cf, Atten= 95%, Lag= 0.0 min Discarded = 0.05 cfs @ 10.66 hrs, Volume= 3,762 cf Primary - 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Peak Elev= 166,78' @ 14.48 hrs Surf.Area= 2,116 sf Storage= 1,766 cf Plug-Flow detention time= 296.2 min calculated for 3,762 cf(100% of inflow) Center-of-Mass det, time= 296.2 min ( 1,052.6 -756.4 ) Volume Invert Avail.Stora a Storage Description #1 165.50, 635 cf Custom Stage Data (Prismatic)Listed below (Recalc) 6,708 cf Overall - 5,120 cf Embedded = 1,588 of x 40,0% Voids #2 166.00' 3,308 of reta1n_it 2.0' x 30 Inside#1 Inside= 84.0"W x 24.0"H => 13.78 sf x 8,001 = 110.3 cf Outside= 96.0"W x 32.0"H => 21.33 sf x 8.001 = 170.7 of 3,943 cf Total Available Storage Elevation Surf.Area Inc.Store Cum,Store feet s -ft cubic-feet cubic-feet 165.50• 2,116 0 0 168.67 2,116 6,708 6,708 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 2-Year Rainfall=3.20" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 sln 00401 ©2014 H droCAD Software Solutions LLC Page 24 Device Routing Invert Outlet Devices 41 Primary 165.40' 12.0" Round Culvert L= 30.0' Ke= 0.500 Inlet/Outlet Invert= 165.40'1 164.95' S= 0.0150 '1' Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 167.00' 12.0"W x 3.0" H Vert. Orifice/Grate C= 0.600 #3 Device 1 167.80' 9.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 168.00' 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 #5 Discarded 165.50' 1.020 inlhr Exfiltration over Surface area Phase-ln= 0.01' Discarded OutFlow Max=0.05 cfs @ 10.66 hrs HW=165.53' (Free Discharge) t--5=Exfiltration (Exfiltration Controls 0.05 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=165.50' TW=163.90' (Dynamic Tailwater) tlt-- =Culvert (Passes 0.00 cfs of 0,04 cfs potential flow) 2=Orifice/Grate ( Controls 0.00 cfs) 3=OrificelGrate ( Controls 0.00 cfs) =Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 6P: Infiltration Trench Inflow Area = 2,552 sf,100.00% Impervious, Inflow Depth = 2.97" for 2-Year event Inflow - 0.18 cfs @ 12.08 hrs, Volume= 631 cf Outflow = 0.18 cfs @ 12.08 hrs, Volume= 631 cf, Atten= 0%, Lag= 0.1 min Discarded = 0.01 cfs @ 11.32 hrs, Volume= 311 cf Primary - 0.18 cfs @ 12.08 hrs, Volume 320 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs/ 3 Peak Elev= 170.51' @ 12.08 hrs Surf.Area= 232 sf Storage= 71 of Plug-Flow detention time= 108.0 min calculated for 631 cf(100% of inflow) Center-of-Mass det, time= 108.1 min ( 864.5- 756.4) Volume Invert Avail.Stora e Storage Description #1 169.00, 70 cf Stone Trench (Prismatic)Listed below(Recalc) 174 cf Overall x 40.0% Voids #2 170.50' 12 cf Area Over Trench Prismatic Listed below Recalc 81 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store feet s -ft oublo-feet cubic-feet 169.00 116 0 0 170.50 116 174 174 Elevation Surf.Area Inc.Store Cum.Store feet (sq-ft) (cubic-feet) (cubic-feet) 170.50 116 0 0 170.60 116 12 12 i 505 Sutton Proposed Conditions Hydrologic Analysis Type II124-hr 2-Year Rainfall=3.20" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 sin 00401 O 2014 H droCAD Software Solutions LLC Page 25 Device Routing Invert Outlet Devices #1 Primary 170.50' 7 0.0' long x 1.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3,32 #2 Discarded 169.00' 1.020 inlhr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.01 cfs @ 11.32 hrs HW=170.50' (Free Discharge) t2=Exfiltra1ion {Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.18 cfs @ 12.08 hrs HW=170.51' TW=0.00' (Dynamic Tailwater) L1=Broad-Crested Rectangular Weir (Weir Controls 0.18 cfs @ 0.26 fps) 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 10-Year Rainfall=4.80" Prepared by Microsoft Printed 8/29/2019 HydroCAD® 10.00-13 sln 00401 ©2014 HydroCAD Software Solutions LLC Paae 26 Summary for Subcatchment PSI: Runoff = 2.94 cfs @ 12,08 hrs, Volume= 9,882 cf, Depth= 4.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 10-Year Rainfall=4.80" Areas CN Description 3,170 74 >75% Grass cover, Good, HSG C 23,273 98 Paved parking, HSG C 661 98 Roofs, HSG C 987 98 Unconnected pavement, HSG C 28,091 95 Weighted Average 3,170 11.28% Pervious Area 24,921 88.72% Impervious Area 987 3.96% Unconnected Tc Length Slope Velocity Capacity Description min feet ft/ft) (fUsec) (cfs 6.0 Direct Entry, Summary for Subcatchment PSI0: Runoff - 1.49 cfs @ 12.08 hrs, Volume= 5,265 cf, Depth= 4.56" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 10-Year Rainfall=4.80" Area {sq CN Description 13,844 98 Roofs, HSG C 13,844 100.00% Impervious Area Tc Length Slope Velocity Capacity Description min feet f/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PSI 1: Runoff - 1.64 cfs @ 12.08 hrs, Volume= 5,786 cf, Depth= 4,56" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 10-Year Rainfall=4,80" Area (sn CN Description 15,214 98 Roofs, HSG C 16,214 100.00% Impervious Area 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 10-Year Rainfall=4.80" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10,00-13 s/n 00401 ©2014 H droCAD Software Solutions LLC Page 27 Tc Length Slope Velocity Capacity Description (min) (feet) (ftlft) (fVsec) (cfs) 6.0 Direct Entry, Summary for Subcatchment PSI 2: Runoff = 0.76 cfs @ 12.09 hrs, Volume= 2,357 cf, Depth= 2.21" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 10-Year Rainfall=4.80" Area (sD CN Description 12,822 74 >75% Grass cover, Good, HSG C 12,822 100.00% Pervious Area Tc Length Slope Velocity Capacity Description min feet ftlft ftlsee cfs 6.0 Direct Entry, Summary for Subcatchment PS2: Runoff - 1.42 cfs @ 12.08 hrs, Volume= 4,716 cf, Depth= 4.11" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 10-Year Rainfall=4.80" Area (sf) CN Description 2,572 74 >75% Grass cover, Goad, HSG C 6,226 98 Paved parking, HSG C 1,474 98 Roofs, HSG C 3,495 98 Unconnected pavement, HSG C 13,767 94 Weighted Average 2,672 18.68% Pervious Area 11,195 81.32% Impervious Area 3,495 31.22% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment PS3: Runoff - 0.85 cfs @ 12.08 hrs, Volume= 2,728 of, Depth= 3.79" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type ill 24-hr 10-Year Rainfall=4.80" 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 10-Year Rainfall=4.80" Prepared by Microsoft Printed 8/29/2019 HydroCAD®10.00-13 s/n 00401 02014 HydroCAD Software Solutions LLC Page 28 Areas CN Description 2,355 74 >75% Grass cover, Good, HSG C 5,874 98 Paved parking, HSG C 34 98 Roofs, HSG C 378 98 Unconnected pavement, HSG C 8,641 91 Weighted Average 2,356 27.25% Pervious Area 6,286 72.75% Impervious Area 378 6.01% Unconnected Tc Length Slope Velocity Capacity Description min feet fVft ftlsec cfs 6.0 Direct Entry, Summary for Subcatchment PS4: Runoff - 0.87 cfs @ 12.09 hrs, Volume= 2,701 cf, Depth= 2.72" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 10-Year Rainfall=4.80" Areas CN Description 8,762 74 >75% Grass cover, Good, HSG C 3,160 98 Paved parking, HSG C 11,922 80 Weighted Average 8,762 73.49% Pervious Area 3,160 26.51% Impervious Area Te Length Slope Velocity Capacity Description min feet ftlft fit/sec cfs 6.0 Direct Entry, Summary for Subcatchment PSS: Runoff - 1.06 cfs @ 12.09 hrs, Volume= 3,342 cf, Depth= 3.48" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type Ill 24-hr 10-Year Rainfall=4.80" Area (sf) CN Description 4,846 74 >75% Grass cover, Good, HSG C 5,452 98 Paved parking, HSG C 95 98 Roofs, HSG C 1,133 98 Unconnected pavement, HSG C 11,626 88 Weighted Average 4,846 42.04% Pervious Area 6,680 57.96% Impervious Area 1,133 16.96% Unconnected 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 10-Year Rainfall=4.80" Prepared by Microsoft Printed 8/29/2019 HydroCADO 10.00-13 s/n 00401 O 2014 HydroCAD Software Solutions LLC _ Page_29 Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS6: Runoff - 0.32 cfs @ 12.09 hrs, Volume= 982 cf, Depth= 2.21" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 10-Year Rainfall=4.80" Area (so CN Description 5,343 74 >75% Grass cover, Good, HSG C 5,343 100,00% Pervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS7: Runoff - 0.16 cfs @ 12.09 hrs, Volume= 490 cf, Depth= 2.21" Runoff by SCS TR-20 method, UH-SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 10-Year Rainfall=4.80" Areas CN Description 2,666 74 >75% Grass cover, Good, HSG C 2,666 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment PS$: Runoff -- 1.22 cfs @ 12.09 hrs, Volume= 3,842 cf, Depth= 2.21" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 10-Year Rainfall=4.80" Area (st CN Description 20,900 74 >75% Grass cover, Good, HSG C 20,900 100.00% Pervious Area 605 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 10-Year Rainfall=4.80" Prepared by Microsoft Printed 8/29/2019 H droCAD@ 10.00-13 sin 00401 02014 H droCAD Software Solutions LLC Page 30 Tc Length Slope Velocity Capacity Description min) (feet) (ftlft) (ftlsec) (cfs) 4.9 50 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.10" 1.3 210 0.0290 2.74 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 0.0 20 0.3500 9.52 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 6.2 280 Total Summary for Subcatchment PS8A: Runoff - 0.27 cfs @ 12.08 hrs, Volume= 971 cf, Depth= 4.56" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 10-Year Rainfall=4.80" Areas CN Description 587 98 Roofs, HSG C 1,965 98 Unconnected_pavement, HSG C 2,552 98 Weighted Average 2,552 100.00% Impervious Area 1,965 77.00% Unconnected Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS9: Runoff - 1.94 cfs @ 12.08 hrs, Volume= 6,830 cf, Depth= 4.56" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 10-Year Rainfall=4.80" Areas CN Description 17,961 98 Roofs, HSG C 17,961 100.00% Impervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ftisec cfs 6.0 Direct Entry, Summary for Reach DPI: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 126,309 sf, 78.59% Impervious, Inflow Depth > 2.96" for 10-Year event Inflow = 4.94 cfs @ 12.12 hrs, Volume= 31,196 of Outflow - 4.94 cfs @ 12.12 hrs, Volume= 31,196 cf, Atten= 0%, Lag= 0.0 min I 505 Sutton Proposed Conditions Hydrologic Analysis Type l!I 24-hr 10-Year Rainfall=4.80" Prepared by Microsoft Printed 8/29/2019 N droCAD® 10.00-13 sln 00401 ©2014 H droCAD Software Solutions LLC Page 31 Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs!3 Summary for Reach DP2: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 23,452 sf, 10.88% Impervious, Inflow Depth = 2.27" for 10-Year event Inflow - 1.49 cfs @ 12.09 hrs, Volume= 4,437 of Outflow - 1.49 cfs @ 12.09 hrs, Volume= 4,437 of, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs/3 Summary for Reach DP3: [40] Hint: Not Described (Outflow=Inflow) Summary for Reach DP4: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 12,822 sf, 0.00% Impervious, Inflow Depth = 2.21" for 10-Year event Inflow - 0.76 cfs @ 12.09 hrs, Volume= 2,357 of Outflow - 0.76 cfs @ 12.09 hrs, Volume= 2,357 of, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs /3 Summary for Reach DP5: [40] Hint: Not Described (Outflow=lnflow) Inflow Area = 2,666 sf, 0.00% Impervious, Inflow Depth = 2.21" for 10-Year event Inflow = 0.16 cfs @ 12.09 hrs, Volume= 490 of Outflow - 0.16 cfs @ 12.09 hrs, Volume= 490 cf, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-End method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs/3 Summary for Pond 1 P: Retain It Inflow Area = 31,945 sf, 75.90% Impervious, Inflow Depth = 3.96" for 10-Year event Inflow = 3.09 cfs @ 12.08 hrs, Volume= 10,540 of Outflow - 1.26 cfs @ 12.30 hrs, Volume= 10,540 of, Atten= 59%, Lag= 12.7 min Discarded - 0.03 cfs @ 7.39 hrs, Volume= 2,818 of Primary - 1.23 cfs @ 12.30 hrs, Volume= 7,723 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 505 Sutton Proposed Conditions Hydrologic Analysis Type 111 24-hr 10-Year Rainfall=4.80" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10.00-13 s/n 00401 02014 H droCAD Software Solutions LLC Page 32 Peak Elev= 164.44' @ 12.30 hrs Surf.Area= 1,460 sf Storage= 2,404 cf Plug-Flow detention time= 49.4 min calculated for 10,537 cf(100% of inflow) Center-of-Mass det, time=49.4 min ( 816.8- 767.4 ) Volume Invert Avail.Stora e Storage Description #1A 162.00' 867 cf 146.00'W x 10.001 x 5.17'H Field A 7,543 cf Overall - 5,376 cf Embedded = 2,167 cf x 40.0% Voids #2A 162.50' 3,870 cf retain it 4.0' x 18 Inside#1 Inside= 84.0"W x 48.0"H => 28.87 sf x 8.00'L = 230.9 cf Outside= 96.0"W x 56.0"H => 37.33 sf x 8.00'L = 298.7 cf 18 Rows adjusted for 286.9 cf perimeter wall 4,737 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 162.50' 12.0" Round Culvert L= 112.0' Ke= 0.500 Inlet/Outlet Invert= 162.50' / 153.84' S= 0,0773 '/' Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 162.50' 6.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 164.50' 3.0"Vert, Orifice/Grate C= 0.600 #4 Device 1 166.40' 12.0" Horiz, Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Discarded 162.00' 1.020 inihr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.03 cfs @ 7.39 hrs HW=162.05' (Free Discharge) t-5-Exfiltration (Exfiltration Controls 0.03 cfs) Primary OutFlow Max=1.23 cfs @ 12.30 hrs HW=164.44' TW=0.00' (Dynamic Tailwater) t-E2=Orif ulvert (Passes 1.23 cfs of 4.53 cfs potential flow) ice/Grate (Orifice Controls 1.23 cfs @ 6.25 fps) =Orifice/Grate (Controls 0.00 cfs) =Orifice/Grate ( Controls 0.00 cfs) Summary for Pond 2P: Retain It Inflow Area 13,767 sf, 81.32% Impervious, Inflow Depth = 4.11" for 10-Year event Inflow - 1.42 cfs @ 12.08 hrs, Volume= 4,716 cf Outflow = 0.62 cfs @ 12.27 hrs, Volume= 4,716 cf, Atten= 56%, Lag= 11.0 min Discarded = 0.02 cfs @ 8.48 hrs, Volume= 1,814 cf Primary - 0.60 cfs @ 12.27 hrs, Volume= 2,902 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Peak Elev= 164.27' @ 12.27 hrs Surf.Area= 900 sf Storage= 1,443 cf Plug-Flow detention time= 113.1 min calculated for 4,716 cf (100% of inflow) Center-of-Mass det. time= 113.1 min ( 887.7 - 774.6 ) 505 Sutton Proposed Conditions Hydrologic Analysis Type Ill 24-hr 10-Year Rainfall=4.80" Prepared by Microsoft Printed 8/29/2019 H draCAD® 10,00-13 sln 00401 02014 H droCAD Software Solutions LLC Paq e 33 Volume Invert Avail.Stora e Storage Description #1A 162.00' 400 cf 50.00'W x 18.00'L x 4.67'H Field A 4,200 cf Overall -- 3,200 cf Embedded = 1,000 of x 40.0% Voids #2A 162.50' 2,311 cf retain it 3.5' x 12 Inside#1 Inside= 84.0"W x 42.0"H => 25.10 sf x 8.001 = 200.8 cf Outside= 96,0"W x 50.0"H => 33.33 sf x 8.001 = 266.7 of 6 Rows adjusted for 98.2 cf perimeter wall 2,711 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 162,50' 12.0" Round Culvert L= 23.0' Ke= 0.500 Inlet/Outlet Invert= 162.50'1 158.32' S= 0.1817 '/' Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 162.90' 4.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 163.80' 3.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 164.80' 4.0"Vert. Orifice/Grate C= 0.600 #5 Device 1 165.40' 12.0" Horiz, Orifice/Grate C= 0.600 Limited to weir flow at low heads #6 Discarded 162.00' 1.020 inlhr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.02 cfs @ 8.48 hrs HW=162.05' (Free Discharge) t-6=Exfiltration (Exfiltration Controls 0.02 cfs) rimary OutFlow Max=0.60 cfs @ 12.27 hrs HW=164.27' TW=0.00' (Dynamic Tallwater) 1=Culvert (Passes 0.60 cfs of 4.26 cfs potential flow) 2=OrificefGrate (Orifice Controls 0.46 cfs @ 5.28 fps) 3=OrlificelGrate (Orifice Controls 0.14 cfs @ 2.83 fps) =OrificelGrate ( Controls 0.00 cfs) =OrificelGrate (Controls 0.00 cfs) Summary for Pond 3P: Retain It Inflow Area = 13,844 sf,100.00% Impervious, Inflow Depth = 4.56" for 10-Year event Inflow = 1.49 cfs @ 12.08 hrs, Volume= 5,265 cf Outflow - 1.10 cfs @ 12.15 hrs, Volume= 5,265 cf, Atten= 26%, Lag= 4.3 min Discarded = 0.01 cfs @ 5.27 hrs, Volume= 1,489 cf Primary = 1.09 cfs @ 12.15 hrs, Volume= 3,776 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Peak Elev= 164.96' @ 12.15 hrs Surf.Area= 612 sf Storage= 1,053 cf Plug-Flow detention time= 92.4 min calculated for 5,263 cf(100% of inflow) Center-of-Mass det, time= 92.5 min ( 841.2- 748.7) i 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 10-Year Rainfall=4.80" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10.00-13 sin 00401 02014 H droCAD Software Solutions LLC Page 34 Volume Invert Avall.Stora e Storage Description #1A 162.50' 249 of 34.00'W x 18.001 x 3.67'H Field A 2,244 of Overall - 1,621 of Embedded = 623 of x 40.0% Voids #2A 163.00' 1,084 of retain_it 2.5' x 8 Inside#1 Inside= 84.0"W x 30.0"H => 17.56 sf x 8.001= 140.4 of Outside= 96.0"W x 38.0"H => 25.33 sf x 8.00'L = 202.7 of Rows adjusted for 39.6 cf perimeter wall 1,333 cf Total I Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 163.50' 12.0" Round Culvert L= 23.0' Ke= 0.500 Inlet/ Outlet Invert= 163.50'1 158,32' S= 0.2252 7' Cc=0.900 n= 0.012, Flow Area= 0.79 sf 42 Device 1 163.50' 4.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 164.30' 6.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 165.20' 12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Discarded 162.50' 1.020 inlhr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.01 cfs @ 5.27 hrs HW=162.54' (Free Discharge) L5=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=1.09 cfs @ 12.15 hrs HW=164.96' TW=0.00' (Dynamic Tailwater) t--1=Culvert (Passes 1,09 cfs of 3.71 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.48 cfs @ 5.48 fps) 3=OrificelGrate (Orifice Controls 0.61 cfs @ 3.10 fps) Orifice/Grate ( Controls 0.00 cfs) Summary for Pond 4P: Detention System 1 Inflow Area = 43,305 sf, 92.68% impervious, Inflow Depth = 3.03" for 10-Year event Inflow - 2.94 cfs @ 12.08 hrs, Volume= 10,919 cf Outflow = 0.63 cfs @ 12.61 hrs, Volume= 10,753 of, Atten= 78%, Lag= 31.5 min Primary - 0.63 cfs @ 12.61 hrs, Volume= 10,753 of Routing by Dyn-Star-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Peals Elev= 164.96' @ 12.61 hrs Surf.Area= 5,300 sf Storage=4,644 cf Plug-Flow detention time= 166.0 min calculated for 10,753 of(98% of inflow) Center-of-Mass det. time= 156.3 min (928.2 - 771.9 ) Volume Invert Avail.Stora a Storage Description #1A 163.90' 329 of 106.00'W x 50.001 x 2.67'H Field A 14,133 of Overall - 13,312 of Embedded = 821 of x 40.0% Voids #2A 163,90' 8,530 of retain it 2.0' x 78 Inside#1 -Inside= 84.0"W x 24.0"H => 13.78 sf x 8.00'L = 110.3 of Outside= 96.0"W x 32.0"H => 21.33 sf x 8.00'L = 170.7 of 13 Rows adjusted for 71.8 of perimeter wall 8,859 of Total Available Storage I 505 Sutton Proposed Conditions Hydrologic Analysis Type If! 24-hr 10-Year Rainfaf=4.80" Prepared by Microsoft Printed 8/29/2019 H droCADO 10,00-13 sin 00401 0 2014 H droCAD Software Solutions LLC Page 35 Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 159.00' 12.0" Round Culvert L= 34.0' Ke= 0.500 Inlet 1 Outlet Invert= 159.00' 1 158.32' S= 0.0200 '1' Cc= 0.900 n= 0.012, Flaw Area= 0.79 sf 42 Device 1 163.90' 3.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 164.30' 8.0"W x 2.0" H Vert. Orifice/Grate C= 0.600 #4 Device 1 165.60' 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 Primary OutFlow Max=0.63 cfs @ 12.61 hrs HW=164.96' TW=0.00' (Dynamic Tailwater) t =Culvert (Passes 0.63 cfs of 8.84 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.23 cfs @ 4.66 fps) 3=Orif1ce/Grate (Orifice Controls 0.41 cfs @ 3.65 fps) =Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 5P. Infiltration System 4 Inflow Area = 15,214 sf,100.00% Impervious, Inflow Depth = 4.56" for 10-Year event Inflow - 1.64 cfs @ 12.08 hrs, Volume= 5,786 cf Outflow - 0.32 cfs @ 12.51 hrs, Volume= 5,786 cf, Atten= 81%, Lag= 26.8 min Discarded = 0.05 cfs @ 9.32 hrs, Volume= 4,749 cf Primary - 0.27 cfs @ 12.51 hrs, Volume= 1,037 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Peak Elev= 167.19' @ 12.51 hrs Surf.Area= 2,116 sf Storage= 2,488 cf Plug-Flow detention time= 316.5 min calculated for 5,784 cf (100% of inflow) Center-of-Mass det. time= 316.6 min ( 1,065.3- 748.7 ) Volume Invert Avail.Stora e Storage Description #1 165.50, 635 cf Custom Stage Data (Prismatic)Listed below (Recale) 6,708 cf Overall - 5,120 of Embedded = 1,588 cf x 40.0% Voids #2 166.00' 3,308 cf retain,-it 2.0' x 30 Inside#1 Inside= 84.0"W x 24.0"H => 13.78 sf x 8.001 = 110.3 cf Outside= 96.0"W x 32.0"H => 21.33 sf x 8.001= 1703 cf 3,943 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store feet s -ft cubic-feet cubic-feet 165.50 2,116 0 0 168.67 2,116 6,708 -6,708 505 Sutton Proposed Conditions Hydrologic Analysis Type ill 24-hr 10-Year Rainfall=4.80" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10.00-13 s1n 00401 02014 H droCAD Software Solutions LLC Pa e 36 Device Routing Invert Outlet Devices #1 Primary 165.40' 12.0" Round Culvert L= 30.0' Ke= 0.500 Inlet/Outlet Invert= 165.40'1164.96' S= 0.0150 '/' Cc= 0.900 n= 0.012, Flow Area 0.79 sf #2 Device 1 167.00' 12.0"W x 3.0" H Vert. Orifice/Grate C= 0.600 #3 Device 1 167.80' 9.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 168.00' 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 #5 Discarded 165.50' 1.020 in/hr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.05 cfs @ 9.32 hrs HW=165.53' (Free Discharge) tom=Exfiltration (Exfiltration Controls 0.05 cfs) Primary OutFlow Max=0.27 cfs @ 12.51 hrs HW=167.19' TW=164.95' (Dynamic Tailwater) t_1=Culvert (Passes 0.27 cfs of 4.30 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.27 cfs @ 1.40 fps) 3=Orifice/Grate ( Controls 0.00 cfs) =Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 6P: Infiltration Trench Inflow Area = 2,552 sf,100.00% Impervious, Inflow Depth = 4.56" for 10-Year event Inflow - 0.27 cfs @ 12.08 hrs, Volume= 971 cf Outflow = 0.27 cfs @ 12.08 hrs, Volume= 971 cf, Atten= 0%, Lag= 0.1 min Discarded = 0.01 cfs @ 9.96 hrs, Volume= 375 cf Primary - 0.27 cfs @ 12.08 hrs, Volume= 595 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs/3 Peak Elev= 170.51' @ 12.08 hrs Surf.Area= 232 sf Storage= 71 cf Plug-Flow detention time= 82.2 min calculated for 970 of(100% of inflow) Center-of-Mass det. time= 82.3 min ( 831.0- 748.7) Volume Invert Avail.Stora e Storage Description #1 169.00, 70 cf Stone Trench (Prismatic)Listed below (Recalc) 174 cf Overall x 40.0% Voids #2 170,50' 12 cf Area Over Trench Prismatic Listed below Recalc 81 of Total Available Storage Elevation Surf.Area Inc.Store Cum.Store feet s -ft cubic-feet cubic-feet 169.00 116 0 0 170.50 116 174 174 Elevation Surf.Area Inc.Store Cum.Store feet s -ft cubic-feet cubic-fee# 170.50 116 0 0 170.60 116 12 12 505 Sutton Proposed Conditions Hydrologic Analysis Type If/24-hr 10-Year Rainfafl=4.80" p Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 sin 00401 0 2014 H droCAD Software Solutions LLC Page 37 Device Routin Invert Outlet Devices #1 Primary 170.50' 70.0' long x 1.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.86 2.98 3.08 3.20 3.28 3.31 I 3.30 3.31 3.32 02 Discarded 169,00' 1.020 infhr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.01 cfs @ 9.96 hrs HW=170.50' (Free Discharge) L2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.27 cfs @ 12.08 hrs HW=170.51' TW=0.00' (Dynamic Tailwater) 't---1=13road-Crested Rectangular Weir (Weir Controls 0.27 cfs @ 0.30 fps) r 505 Sutton Proposed Conditions Hydrologic Analysis Type 1/124-hr 25-Year Rainfa11=6.00" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10.00-13 s/n 00401 02014 H droCAD Software Solutions LLC Page 38 Summary for Subcatchment PSI: Runoff - 3.72 cfs @ 12.08 hrs, Volume= 12,668 cf, Depth= 5.41" Runoff by SCS TR-20 method, UH-SCS, Weighted-ON, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 25-Year Rainfall=6.00" Area (so CN Descri tion 3,170 74 >75% Grass cover, Good, HSG C 23,273 98 Paved parking, HSG C 661 98 Roofs, HSG C 987 98 Unconnected avement, HSG C 28,091 95 Weighted Average 3,170 11.28% Pervious Area 24,921 88.72% Impervious Area 987 3.96% Unconnected Te Length Slope Velocity Capacity Description min feet ftlft fUsec cfs 6.0 Direct Entry, Summary for Subcatchment PSI0: Runoff 1.87 cfs @ 12.08 hrs, Volume= 6,647 cf, Depth= 5.76" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 25-Year Rainfall=6.00" Area (sD ON Description 13,844 98 Roofs, HSG C 13,844 100.00% Impervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ftlsec cfs 6.0 Direct Entry, Summary for Subcatchment PSI1: Runoff - 2.05 cfs @ 12.08 hrs, Volume= 7,305 cf, Depth= 5.76" Runoff by SCS TR-20 method, UH-SCS, Weighted-CN, Time Span 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 25-Year Rainfall=6.00" Area (so ON Description 15,214 98 Roofs, HSG C 15,214 100.00% Impervious Area 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 25-Year Rainfail=6.00" Prepared by Microsoft Printed 8/29/2019 N droCAD® 10.00-13 s/n 00401 ©2014 H droCAD Software Solutions LLC Page 39 Tc Length Slope Velocity Capacity Description min feet fV ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PSI2: Runoff - 1.10 cfs @ 12.09 hrs, Volume= 3,403 cf, Depth= 3.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 25-Year Rainfall=6.00" Area (sD CN Description 12,822 74 >75% Grass cover, Good, HSG C 12,822 100.00% Pervious Area Te Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS2: Runoff - 1.80 cfs @ 12.08 hrs, Volume= 6,077 cf, Depth= 5.30" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 25-Year Rainfall=6.00" Areas CN Description 2,672 74 >75% Grass cover, Good, HSG C 6,226 98 Paved parking, HSG C 1,474 98 Roofs, HSG C 3,495 98 Unconnected pavement, HSG C 13,767 94 Weighted Average 2,572 18.68% Pervious Area 11,195 81.32% Impervious Area 3,495 31.22% Unconnected Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS3: Runoff - 1.09 cfs @ 12.08 hrs, Volume= 3,570 cf, Depth= 4.96" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 25-Year Rainfall=6.00" 505 Sutton Proposed Conditions Hydrologic Analysis Type ill 24-hr 25-Year Rainfall=6.00" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10.00-13 sln 00401 O 2014 H droCAD Software Solutions LLC Page 40 Area (so CN Description 2,355 74 >75% Grass cover, Good, HSG C 5,874 98 Paved parking, HSG C 34 98 Roofs, HSG C 378 98 Unconnected pavement, HSG C 8,641 91 Weighted Average 2,355 27.25% Pervious Area 6,286 72.75% Impervious Area 378 6.01% Unconnected Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS4: Runoff = 1.21 cfs @ 12.09 hrs, Volume 3,757 cf, Depths 3.78" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 25-Year Rainfall=6.00" Area (so CN Description 8,762 74 >75% Grass cover, Good, HSG C 3,160 98 Paved parking, HSG C 11,922 80 Weighted Average 8,762 73.49% Pervious Area 3,160 26.51% Impervious Area Tc Length Slope Velocity Capacity Description min feet Oft) ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS5: Runoff - 1.39 cfs @ 12.09 hrs, Volume= 4,443 cf, Depth= 4.63" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 25-Year Rainfall=6.00" Area�so CN Description 4,846 74 >75% Grass cover, Good, HSG C 5,452 98 Paved parking, HSG C 95 98 Roofs, HSG C 1,133 98 Unconnected pavement, HSG C 11,526 88. Weighted Average 4,846 42.04% Pervious Area 6,680 57,96% Impervious Area 1,133 16.96% Unconnected 505 Sutton Proposed Conditions Hydrologic Analysis Type 1/124-hr 25-Year Rainfall=6.00" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10.00-13 s/n 00401 ©2014 H droCAD Software Solutions LLC Page 41 Tc Length Slope Velocity Capacity Description min feet ftlft ftlsec cfs 6.o Direct Entry, Summary for Subcatchment PS6: Runoff - 0,46 cfs @ 12.09 hrs, Volume= 1,418 cf, Depth= 3.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 25-Year Rainfall=6.00" Areas CN Description 5,343 74 >75% Grass cover, Good, HSG C 5,343 100.00% Pervious Area Tc Length Slope Velocity Capacity Description min feet fUft) (ft/sec) (cfs 6.0 Direct Entry, Summary for Subcatchment PS7: Runoff - 0.23 cfs @ 12.09 hrs, Volume= 708 cf, Depth= 3.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 25-Year Rainfall=6.00" Areas CN Descri Lion 2,666 74 >75% Grass cover, Good, HSG C 2,666 100.00% Pervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ftlsec cfs 6.0 Direct Entry, Summary for Subcatchment PS8: Runoff - 1.78 cfs @ 12.09 hrs, Volume= 5,547 cf, Depth= 3.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 25-Year Rainfall=6.00" Areas CN Description 20,900 74 >75% Grass cover, Good, HSG C 20,900 100.00% Pervious Area 505 Sutton Proposed Conditions Hydrologic Analysis Type IN 24-hr 25-Year Rainfall=6.00" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 s/n 00401 0 2014 H droCAD Software Solutions LLC Pacie 42 Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 4.9 50 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.10" 1.3 210 0.0290 2.74 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 0.0 20 0.3500 9.52 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 6.2 280 Total Summary for Subcatchment PS8A: Runoff - 0.34 cfs @ 12.08 tars, Volume= 1,225 cf, Depth= 5.76" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 25-Year Rainfall=6.00" Areas CN Descri tion 587 98 Roofs, HSG C 1,965 98 Unconnected avement, HSG C 2,552 98 Weighted Average 2,552 100.00% Impervious Area 1,965 77.00% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ftlft (ft/sec) 6.0 Direct Entry, Summary for Subcatchment PS9: Runoff - 2.42 cfs @ 12.08 hrs, Volume= 8,624 cf, Depth= 5.76" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 25-Year Rainfall=6.00" Areas CN Descri tion 17,961 98 Roofs, HSG C 17,961 100.00% Impervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Reach DPI: (40] Hint: Not Described (Outflow=Inflow) Inflow Area 126,309 sf, 78.59% Impervious, Inflow Depth > 4.07" for 25-Year event Inflow - 6.30 cfs @ 12.13 hrs, Volume= 42,803 cf Outflow - 6.30 cfs @ 12.13 hrs, Volume= 42,803 cf, Atten= 0%, Lag= 0.0 min 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 25-Year Rainfall=6.00" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 sln 00401 ©2014 H droCAD Software Solutions LLC Page 43 Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 1 3 Summary for Reach DP2: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 23,452 sf, 10.88% Impervious, Inflow Depth = 3,26" for 25-Year event Inflow - 2.12 cfs @ 12.09 hrs, Volume= 6,362 of Outflow = 2.12 cfs @ 12.09 hrs, Volume= 6,362 of, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 1 3 Summary for Reach DP3: [40] Hint: Not Described (Outflow=Inflow) Summary for Reach DP4: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 12,822 sf, 0.00% Impervious, Inflow Depth = 3.18" for 25-Year event Inflow - 1.10 cfs @ 12.09 hrs, Volume= 3,403 of Outflow = 1.10 cfs @ 12.09 hrs, Volume= 3,403 cf, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs/3 Summary for Reach DP5: [40] Hint: Not Described (Outflow=I nf low) Inflow Area = 2,666 sf, 0.00% Impervious, Inflow Depth = 3.18" for 25-Year event Inflow -- 0.23 cfs @ 12,09 hrs, Volume= 708 of Outflow - 0.23 cfs @ 12.09 hrs, Volume= 708 of, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs/3 Summary for Pond I P: Retain It Inflow Area = 31,945 sf, 75.90% Impervious, Inflow Depth = 5.11" for 25-Year event Inflow - 3.97 cfs @ 12.08 hrs, Volume= 13,612 of Outflow = 1.63 cfs @ 12.29 hrs, Volume= 13,612 of, Atten= 59%, Lag= 12.5 min Discarded = 0.03 cfs @ 6.41 hrs, Volume= 2,970 of Primary 1.59 cfs @ 12.29 hrs, Volume= 10,641 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 505 Sutton Proposed Conditions Hydrologic Analysis Type Ili 24-hr 25-Year Rainfall-6.00 „ Prepared by Microsoft Printed 8/29/2019 H q CAD@) 10.00-13 sln 00401 ©2014 H droCAD Software Solutions LLC Pa e 44 Peak Elev= 165.06' @ 12.29 hrs Surf,Area= 1,460 sf Storage= 3,082 of Plug-Flow detention time=45.8 min calculated for 13,608 of(100% of inflow) Center-of-Mass det. time=45.9 min' ( 809.2 - 763.3) Volume Invert Avall.Stora a Storage Description #1A 162.00' 867 cf 146.00'W x 10.001 x 5.17'H Field A 7,543 of Overall - 5,376 of Embedded = 2,167 cf x 40.0% Voids #2A 162.50' 3,870 of retain It 4.0' x 18 Inside#1 Inside= 84.0"W x 48.0"H => 28.87 sf x 8.001 = 230.9 of Outside= 96.0"W x 56.0"H => 37.33 sf x 8,001 = 298.7 of 18 Rows adjusted for 286.9 of perimeter wall 4,737 of Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices - #1 Primary 162.50' 12.0" Round Culvert L= 112.0' Ke= 0.500 Inlet 1 Outlet Invert= 162.50'1 153.84' S= 0.0773 T Cc= 0.900 n= 0.012, Flow Area 0.79 sf #2 Device 1 162.50' 6.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 164.50' 3.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 166.40' 12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Discarded 162.00' 1.020 inlhr Exflltration over Surface area Phase-ln= 0.01' Discarded OutFlow Max=0.03 cfs @ 6.41 hrs HW=162.05' (Free Discharge) tS=Exfiltration (Exfiltration Controls 0.03 cfs) Primary OutFlow Max=1,59 cfs @ 12.29 hrs HW=165.06' TW=0.00' (Dynamic Tallwater) 'L =Culvert (Passes 1.59 cfs of 5.42 cfs potential flow) 2=Orifice/Grate (Orifice Controls 1.44 cfs @ 7.31 fps) 3=Orlfice/Grate (Orifice Controls 0.16 cfs @ 3.17 fps) =Orifice/Grate ( Controls 0.00 cfs) Summary for Pond 2P: Retain It Inflow Area = 13,767 sf, 81.32% Impervious, Inflow Depth = 5.30" for 25-Year event Inflow - 1.80 cfs @ 12.08 hrs, Volume= 6,077 of Outflow = 0.77 cfs @ 12.27 hrs, Volume= 6,077 of, Atten= 57%, Lag= 11,4 min Discarded = 0.02 cfs @ 7.53 hrs, Volume= 1,939 cf Primary - 0.75 cfs @ 12.27 hrs, Volume= 4,137 of Routing by Dyn-Stor-Ind method, Time Span= 0,00-36.00 hrs, dt= 0.01 hrs 13 Peak Elev= 164.71' @ 12.27 hrs Surf.Area= 900 sf Storage= 1,755 cf Plug-Flow detention time= 101.0 min calculated for 6,075 of(100% of inflow) Center-of-Mass det, time= 101.0 min (869.5 -768.5) I e 505 Sutton Proposed Conditions Hydrologic Analysis Typ 11124-hr 25-Year Rainfall=6.�t?" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10.00-13 s/n 00401 ©2014 H droCAD Software Solutions L.I.0 Page 45 Volume Invert Avail.Stora e Storage Description #1A 162.00' 400 cf 60.00'W x 18.001 x 4.67'H Field A 4,200 cf Overall - 3,200 cf Embedded = 1,000 cf x 40.0% Voids #2A 162.50' 2,311 of retain it 3.5' x 12 Inside#1 Inside= 84.0"W x 42.0"H => 25.10 sf x 8.001 = 200.8 cf Outside= 96.0"W x 50,0"H => 33.33 sf x 8.001 = 266.7 cf 6 Rows adjusted for 98.2 cf perimeter wall 2,711 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 162,50' 12.0" Round Culvert L= 23.0' Ke= 0.500 Inlet/Outlet Invert= 162.50' / 168.32' S= 0.1817 '1' Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 162.90' 4.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 163,80' 3.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 164.80' 4.0"Vert. Orifice/Grate C= 0.600 #5 Device 1 165.40' 12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #6 Discarded 162.00' 1.020 in/hr Exflltration over Surface area Phase-ln= 0.01' Discarded OutFlow Max=0.02 cfs @ 7.53 hrs HW=162.05' (Free Discharge) t-6=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.75 cfs @ 12.27 hrs HW=164.71' TW=0.00' (Dynamic Tailwater) L =Culvert (Passes 0.75 cfs of 4.94 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.54 cfs @ 6.17 fps) 3=OrificelGrate (Orifice Controls 0.21 cfs @ 4.26 fps) =Orifice/Grate ( Controls 0.00 cfs) =Orifice/Grate ( Controls 0.00 cfs) Summary for Pond 3P: Retain It Inflow Area = 13,844 sf,100.00% Impervious, Inflow Depth = 5.76" for 25-Year event Inflow = 1.87 cfs @ 12.08 hrs, Volume= 6,647 of Outflow = 1.43 cfs @ 12.15 hrs, Volume= 6,647 cf, Atten= 24%, Lag=4.0 min Discarded = 0.01 cfs @ 3,96 hrs, Volume= 1,534 cf Primary - 1.41 cfs @ 12.16 hrs, Volume= 6,114 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Peak Elev= 166,25' @ 12.15 hrs Surf.Area= 612 sf Storage= 1,186 cf Plug-Flow detention time= 80.2 min calculated for 6,645 cf (100% of inflow) Center-of-Mass det. time= 80.3 min ( 825.4 - 746.1 ) 605 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 25-Year Rainfall=6.00" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 s/n 00401 c0 2014 H droCAD Software Solutions LLC Page 46 Volume Invert Avail.Stora a Storage Description #1A 162.50' 249 of 34.00'W x 18.00%x 3.67'H Field A 2,244 cf Overall - 1,621 cf Embedded = 623 of x 40.0% Voids #2A 163.00' 1,084 of retain it 2.5' x 8 Inside#1 Inside 84.0"W x 30.0"H => 17.56 sf x 8.001 = 140.4 cf Outside= 96.0"W x 38.0"H => 25.33 sf x 8.00'L = 202.7 cf 4 Rows adjusted for 39.6 cf perimeter wall 1,333 of Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 163.50' 12.0" Round Culvert L= 23.0' Ke= 0.500 Inlet/Outlet Invert= 163.50'/ 168.32' S= 0.2252 '/' Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 163.60' 4.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 164.30' 6.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 165.20' 12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Discarded 162.50' 1.020 in/hr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.01 cfs @ 3.96 hrs HW=162.54' (Free Discharge) L5=Exflltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=1.41 cfs @ 12.15 hrs HW=165.25' TW=0.00' (Dynamic Tailwater) 'L1=Culvert (Passes 1.41 cfs of 4.22 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0,53 cfs @ 6.05 fps) 3=Orifice/Grate (Orifice Controls 0.79 cfs @ 4.01 fps) =Orifice/Grate (Weir Controls 0.10 cfs @ 0.69 fps) Summary for Pond 4P: Detention System 1 Inflow Area = 43,305 sf, 92.68% Impervious, Inflow Depth = 4.12" for 25-Year event Inflow - 3.72 cfs @ 12.08 hrs, Volume= 14,885 cf Outflow - 0.81 cfs @ 12.71 hrs, Volume= 14,711 cf, Atten= 78%, Lag= 37.8 min Primary = 0.81 cfs @ 12.71 hrs, Volume= 14,711 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs/'3 Peak Elev= 165.38' @ 12.71 hrs Surf.Area= 5,300 sf Storage= 6,495 cf Plug-Flow detention time= 157.8 min calculated for 14,707 cf(99% of inflow) Center-of-Mass det. time= 150.4 min ( 917.3- 766.9) Volume Invert Avall.Stora a Storage Description #1A 163.90' 329 of 106.00'W x 50.00%x 2.67H Field A 14,133 cf Overall - 13,312 cf Embedded = 821 cf x 40.0%Voids #2A 163.90, 8,530 cf retain it 2.0' x 78 Inside#1 Inside= 84.0"W x 24.0"H => 13.78 sf x 8.001 = 110.3 cf Outside= 96.0"W x 32.0"H => 21.33 sf x 8.001 = 170.7 cf 13 Rows adjusted for 71.8 cf perimeter wall 8,859 cf Total Available Storage i 505 Sutton Proposed Conditions Hydrologic Analysis Type 1I1 24-hr 25-Year Rainfall=6.00" Prepared by Microsoft Printed 8/29I2019 H droCADD 10,00-13 sIn 00401 CO 2014 H droCAD Software Solutions LLC Pacie 47 - Storage Group A created with Chamber Wizard i Device Routing Invert Outlet Devices #1 Primary 159.00' 12.0" Round Culvert L= 34.0' Ke= 0.500 Inlet I Outlet Invert= 159.00' 1158.32' S= 0.0200 T Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 163.90' 3.0"Vert. Orifice/Grate C= 0.600 43 Device 1 164.30' 8.0" W x 2.0" H Vert. Orifice/Grate C= 0.600 #4 Device 1 165,60' 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 Primary OutFlow Max=0.81 cfs @ 12.71 hrs HW=165,38' TW=0.00' (Dynamic Tailwater) t =Culvert (Passes 0.81 cfs of 9.17 cfs potential flow) 2=OrificelGrate (Orifice Controls 0.28 cfs @ 5.61 fps) 3=Orifice/Grate (Orifice Controls 0.53 cfs @ 4.81 fps) Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 5P: Infiltration System 4 Inflow Area = 16,214 sf,100.00% Impervious, Inflow Depth = 5.76" for 25-Year event Inflow - 2.05 cfs @ 12.08 hrs, Volume= 7,305 cf Outflow - 0.66 cfs @ 12.37 hrs, Volume= 7,305 cf, Atten= 68%, Lag= 17.4 min Discarded 0.05 cfs @ 8.67 hrs, Volume= 5,088 cf Primary - 0.61 cfs @ 12.37 hrs, Volume= 2,217 cf Routing by Dyn-Stor-Ind method, Time Span= 0,00-36.00 hrs, dt= 0,01 hrs 13 Peak Elev= 167.39' @ 12,37 hrs Surf.Area= 2,116 sf Storage= 2,826 cf Plug-Flow detention time= 276.E min calculated for 7,303 cf(100% of inflow) Center-of-Mass det. time 276.7 min ( 1,021.8 -745.1 ) Volume Invert Avail.Stora e Storage Description #1 165.50' 635 of Custom Stage Data (Prismatic)Listed below (Recale) 6,708 cf Overall - 5,120 cf Embedded = 1,688 cf x 40.0% Voids #2 166.00' 3,308 cf retain-it 2.0' x 30 Inside 41 Inside= 84.0"W x 24.0"H => 13.78 sf x 8.001 = 110.3 of Outside= 96.0"W x 32.0"H => 21.33 sf x 8.00% = 170.7 cf 3,943 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store feet s -ft cubic-feet cubic-feet 165,56 2,116 0 0 168.67 2,116 6,708 6,708 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 25-Year Rainfall=6.00" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 sln 00401 O 2014 W droCAD Software Solutions LLC Page 48 Device Routing Invert Outlet Devices #1 Primary 165.40' 12.0" Round Culvert L= 30.0' Ke= 0.500 Inlet/Outlet Invert= 165.40'/ 164.95' S= 0.0150 '/' Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 167.00' 12.0"W x 3.0" H Vert. Orifice/Grate C= 0,600 #3 Device 1 167.80' 9.0" Vert, Orifice/Grate C= 0.600 #4 Device 1 168.00' 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 #5 Discarded 165,60' 1.020 in/hr Exfiltration over Surface area Phase-ln= 0.01' Discarded OutFlow Max=0.05 cfs @ 8.67 hrs HW=165.53' (free Discharge) t-6=Exfittration (Exfittration Controls 0.05 cfs) Primary OutFlow Max=0.61 cfs @ 12.37 hrs HW=167.39' TW=165.26' (Dynamic Tailwater) I-'-1=Culvert (Passes 0.61 cfs of 4.61 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.61 cfs @ 2.44 fps) 3=Orifice/Grate (Controls 0.00 cfs) Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 6P: Infiltration Trench Inflow Area = 2,552 sf,100.00% Impervious, Inflow Depth = 5.76" for 25-Year event Inflow - 0.34 cfs @ 12.08 hrs, Volume= 1,225 of Outflow = 0.34 cfs @ 12,08 hrs, Volume= 1,225 of, Atten= 0%, Lag= 0.1 min Discarded = 0.01 cfs @ 9.06 hrs, Volume= 410 of Primary - 0.34 cfs @ 12.08 hrs, Volume= 815 of Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs/3 Peals Elev= 170.51' @ 12.08 hrs Surf.Area= 232 sf Storage= 71 of Plug-Flow detention time= 69.1 min calculated for 1,225 of (100% of inflow) Center-of-Mass det, time= 69.2 min ( 814.3- 745A ) Volume Invert Avail.Stora e Storage Description #1 169.00, 70 of Stone Trench (Prismatic)Listed below(Recalc) 174 of Overall x 40.0% Voids #2 174.50' 12 cf Area Over Trench Prismatic Listed below Recalc 81 of Total Available Storage Elevation Surf.Area Inc.Store Cum,Store feet s -ft cubic-feet cubic-feet 169.00 116 0 0 170.50 116 174 174 Elevation Surf.Area Inc.Store Cum.Store feet s -ft cubic-feet cubic-feet 170.50 116 0 0 170.60 116 12 12 V 505 Sutton Proposed Conditions Hydrologic Analysis Type 11124-hr 25-Year Rainfal1=6.00" Prepared by Microsoft Printed 8/29/2019 H droCADO10.00-13 sln 00401 0 2014 H droCAD Software Solutions LLC Pa e 49 Device Routing Invert Outlet Devices #1 Primary 170.50' 70.0' long x 1.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.60 3.00 Coef, (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 #2 Discarded 169.00' 1.020 inlhr Exfiltration over Surface area Phase-in= 0.01' Discarded OutFlow Max=0.01 cfs @ 9.06 hrs HW=170.50' (Free Discharge) t-2=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.34 cfs @ 12.08 hrs HW=170.51' TW=0.00' (Dynamic Tailwater) t--1=Broad-Crested Rectangular Weir (Weir Controls 0.34 cfs @ 0.33 fps) 505 Sutton Proposed Conditions Hydrologic Analysi Type 11124-hr 100-Year Rainfall=8.60" Prepared by Microsoft Printed 8/29/2019 H droCAQ® 10.00-13 s/n 00401 ©2014 H droCAD Software Solutions LLC Page 50 Summary for Subcatchment PSI: Runoff - 6.39 cfs @ 12.08 hrs, Volume= 18,725 cf, Depth= 8.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0,00-36.00 hrs, dt= 0.01 hrs Type Ili 24-hr 100-Year Rainfall=8.60" Areas CN Descri tion 3,170 74 >75% Grass cover, Good, HSG C 23,273 98 Paved parking, HSG C 661 98 Roofs, HSG C 987 98 Unconnected pavement, HSG C 28,091 95 Weighted Average 3,170 11.28% Pervious Area 24,921 88.72% Impervious Area 987, 3.96% Unconnected Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs _ 6.0 Direct Entry, Summary for Subcatchment PSI0: Runoff - 2.68 cfs @ 12.08 hrs, Volume= 9,644 cf, Depth= 8.36" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0,00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 100-Year Rainfall=8.60" Areas CN Description 13,844 98 Roofs HSG C 13,844 100.00% Impervious Area Te Length Slope Velocity Capacity Description min feet Oft) ft/sec) (cfs 6.0 Direct Entry, Summary for Subcatchment PSI 1: Runoff - 2.95 cfs @ 12.08 hrs, Volume= 10,599 cf, Depth= 8.36" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 100-Year Rainfall=8.60" Area (sn CN Description 15,214 98 Roofs, HSG C 15,214 100.00% Impervious Area i 1 505 Sutton Proposed Conditions Hydrologic Analysi Type !ll 24-hr ?i74-Year f2ainfa11W8.60" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10,00-13 sin 00401 O 2014 H droCAD Software Solutions LLC Pa e 51 Tc Length Slope Velocity Capacity Description min feet ftlft) (ft/sec) (cfs 6.0 Direct Entry, Summary for Subcatchment PSI 2: Runoff - 1.88 cfs @ 12.09 hrs, Valume= 5,840 cf, Depth= 5.47" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 100-Year Rainfall=8.60" Areas CN Description 12,822 74 >75% Grass cover, Good, HSG C 12,822 100.00% Pervious Area Te Length Slope Velocity Capacity Description min feet ftlft ftlsec cfs Direct Entry, 6.0 Summary for Subcatchment PS2: Runoff 2.63 cfs @ 12.08 hrs, Volume= 9,039 cf, Depth= 7.88" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 100-Year Rainfali=8.60" Areas CN Description * 2,672 74 >75% Grass cover, Goad, HSG C 6,226 98 Paved parking, HSG C 1,474 98 Roofs, HSG C 3,495 98 Unconnected pRayernent, HSG C 131767 94 Weighted Average 2,572 18.68% Pervious Area 11,195 81.32% Impervious Area 3,495 31,22% Unconnected Tc Length Slope Velocity Capacity Description min feet fYft ftlseG cfs Direct Entry, 6.0 Summary for Subcatchment PS3: Runoff - 1.61 cfs @ 12.08 hrs, Volume= 5,413 cf, Depth= 7.62" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 100-Year Rainfall=8.60" 505 Sutton Proposed Conditions Hydrologic Analysi Type III 24-hr 100-Year Rainfall=8.60" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 s/n 00401 ©2014 H droCAD Software Solutions LLC Pa e 52 - Area tso CN Description 2,355 74 >75% Grass cover, Good, HSG C 5,874 98 Paved parking, HSG C 34 98 Roofs, HSG C 378 98 Unconnected pavement, HSG C 8,641 91 Weighted Average 2,355 27.25% Pervious Area 6,286 72.75% Impervious Area 378 6.01% Unconnected Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS4: Runoff - 1,95 cfs @ 12.09 hrs, Volume 6,149 cf, Depth= 6.19" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 100-Year Rainfall=8.60" Area JED CN Description 8,762 74 >75% Grass cover, Good, HSG C 3,160 98 Paved parking, HSG C 11,922 80 Weighted Average 8,762 73.49% Pervious Area 3,160 26.51% Impervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PSS: Runoff - 2.09 cfs @ 12.08 hrs, Volume= 6,873 cf, Depth= 7.16" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0,00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 100-Year Rainfall=8.60" Area (sn CN Description 4,846 74 >75% Grass cover, Good, HSG C 5,452 98 Paved parking, HSG C 95 98 Roofs, HSG C 1,133 98 Unconnected pavement, HSG C 11,526 88 Weighted Average 4,846 42.04% Pervious Area 6,680 57.96% Impervious Area 1,133 16.96% Unconnected 505 Sutton Proposed Conditions Hydrologic Analysi Type !Il 24-hr 100-Year Rainfall=8.60" Prepared by Microsoft Printed 812 912 0 1 9 H droCAD® 10.00-13 s/n 00401 02014 N droCAD Software Solutions LLC Page 53 Tc Length Slope Velocity Capacity Description min feet ft/ft) (fUsec) (cfs 6.0 Direct Entry, Summary for Subcatchment PS6: Runoff - 0.78 cfs @ 12.09 hrs, Volume= 2,434 cf, Depth= 5.47" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 100-Year Rainfall=8.60" Areas CN Description 5,343 74 >75% Grass cover, Good, HSG C 5,343 100.00% Pervious Area Tc Length Slope Velocity Capacity Description min feet ftfft ftlsec cfs 6.0 Direct Entry, Summary for Subcatchment PS7: Runoff - 0.39 cfs @ 12.09 hrs, Volume= 1,214 cf, Depth= 5.47" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 100-Year Rainfall=8.60" Areas ON Description 2,666 74 >76% Grass cover, Good, HSG C 2,666 100.00% Pervious Area Tc Length Slope Velocity Capacity Description min feet ftlft fUsec cfs 6.0 Direct Entry, Summary for Subcatchment PS8: Runoff - 3.04 cfs @ 12.09 hrs, Volume= 9,519 cf, Depth= 5.47" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 100-Year Rainfall=8.60" Areas CN Descri tion 20,900 74 >75% Grass cover, Good, HSG C 20,900 100.00% Pervious Area 505 Sutton Proposed Conditions Hydrologic Analysi Type Ill 24-hr 100-Year Rainfall=8.60" Prepared by Microsoft printed 8/29/2019 H droCAD@ 10.00-13 sIn 00401 ©2014 H droCAD Software Solutions LLC Pa e 54 Te Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 4.9 50 0.0300 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.10" 1.3 210 0.0290 2.74 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 0.0 20 0.3500 9.52 Shallow Concentrated Flow, 6.2 280 Total Unpaved Kv= 16.1 fps Summary for Subcatchment PS8A: Runoff = 0.49 cfs @ 12.08 hrs, Volume= 1,778 cf, Depth= 8.36" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 100-Year Rainfall=8.60" Areas CN Description 587 98 Roofs, HSG C 1,965 98 Unconnected pavement, HSG C 2,552 98 Weighted Average 2,552 100.00% Impervious Area 1,965 77.00% Unconnected Te Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Subcatchment PS9: Runoff - 3.48 cfs @ 12.08 hrs, Volume= 12,513 cf, Depth= 8.36" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs Type III 24-hr 100-Year Rainfall=8.60" Area (so CN Description 17,961 98 Roofs, HSG C 17,961 100.00% Impervious Area Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Summary for Reach DPI: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 126,309 sf, 78.69% Impervious, Inflow Depth > 6.53" for 100-Year event Inflow W 10.12 cfs @ 12.11 hrs, Volume= 68,729 cf Outflow - 10.12 cfs @ 12.11 hrs, Volume= 68,729 cf, Atten= 0%, Lag= 0,0 min V 505 Sutton Proposed Conditions Hydrologic Analysi Type 11124-hr 100-Year Rainfall=8.60" Prepared by Microsoft Printed 8/29/2019 H droCAD® 10.00-13 s/n 00401 ©2014 H droCAD Software Solutions LLC Pa e 55 Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Summary for Reach DP2: [40] Hint: Not Described (Outflow=lnflow) Inflow Area = 23,452 sf, 10.88% Impervious, Inflow Depth = 5.55" for 100-Year event Inflow - 3.53 cfs @ 12.09 hrs, Volume= 10,839 cf Outflow 3.53 cfs @ 12.09 hrs, Volume= 10,839 cf, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Summary for Reach DP3: [40] Hint: Not Described (Outflow=Inflow) Summary for Reach DP4: [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 12,822 sf, 0.00% Impervious, Inflow Depth = 5.47" for 100-Year event Inflow = 1.88 cfs @ 12.09 hrs, Volume= 5,840 cf Outflow 1.88 cfs @ 12.09 hrs, Volume= 6,840 cf, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span 0.00-36.00 hrs, dt= 0.01 hrs 13 Summary for Reach DP5: [401 Hint: Not Described (Outflow=Inflow) Inflow Area = 2,666 sf, 0.00% Impervious, Inflow Depth = .5.47" for 100-Year event Inflow - 0.39 cfs @ 12.09 hrs, Volume= 1,214 cf Outflow 0.39 cfs @ 12.09 hrs, Volume= 1,214 cf, Atten= 0%, Lag= 0.0 min Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Summary for Pond 1 P: Retain It Inflow Area = 31,945 sf, 75.90% Impervious, Inflow Depth = 7.65" for 100-Year event Inflow - 5.88 cfs @ 12.08 hrs, Volume= 20,369 of Outflow - 2.46 cfs @ 12.28 hrs, Volume= 20,359 cf, Atten= 58%, Lag= 11.9 min Discarded = 0.03 cfs @ 4.20 hrs, Volume= 3,149 cf Primary - 2.43 cfs @ 12.28 hrs, Volume= 17,210 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 505 Sutton Proposed Conditions Hydrologic Analysi Type lU 24-hr 100-Year Rainfall=8.60" Prepared by Microsoft Printed .8129/2019 H droCAD010.00-13 s/n 00401 0 2014 H droCAD Software Solutions LLC Page 56 Peak Elev= 166.49' @ 12.28 hrs Surf.Area= 1,460 sf Storage=4,644 cf Plug-Flow detention time=41.8 min calculated for 20,354 cf(100% of inflow) Center-of-Mass det, time= 41.8 min ( 798.9- 757.1 ) Volume Invert Avail.Stora e Storage Description #1A 162.00' 867 cf 146.00'W x 10.00'L x 6.17'H Field A 7,543 cf Overall - 5,376 cf Embedded = 2,167 cf x 40.0%Voids #2A 162.50' 3,870 cf retain it 4.0' x 18 Inside#1 Inside= 84.0"W x 48.0"H => 28.87 sf x 8.00'L = 230.9 cf Outside= 96.0"W x 56,0"H => 37.33 sf x 8.00'L = 298.7 cf 18 Rows adjusted for 286.9 cf perimeter wall 4,737 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 162.50' 12.0" Round Culvert L= 112.0' Ke= 0.500 Inlet 1 Outlet Invert= 162.50'/ 153.84' S= 0.0773 T Cc= 0.900 n= 0,012, Flow Area- 0.79 sf #2 Device 1 162.50' 6.0"Vert. OrlficefGrate C= 0.600 #3 Device 1 164.50' 3.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 166.40' 12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Discarded 162.00' 1.020 inlhr Exfiltration over Surface area Phase-ln= 0.01' Discarded OutFlow Max=0.03 cfs @ 4.20 hrs HW=162.05' (Free Discharge) t5=Exfiltration (Exfiltration Controls 0.03 cfs) Primary OutFlow Max=2.43 cfs @ 12.28 hrs HW=166.49' TW=0.00' (Dynamic Tailwater) t-- =Culvert (Passes 2.43 cfs of 7.06 cfs potential flow) 2=OrlficelGrate (Orifice Controls 1.83 cfs @ 9.31 fps) 3=OrificelGrate (Orifice Controls 0.32 cfs @ 6.58 fps) =Orifice/Grate (Weir Controls 0.28 cfs @ 0.98 fps) Summary for Pond 2P: Retain It Inflow Area = 13,767 sf, 81.32% Impervious, Inflow Depth = 7.88" for 100-Year event Inflow - 2.63 cfs @ 12.08 hrs, Volume= 9,039 cf Outflow = 1.39 cfs @ 12.21 hrs, Volume= 9,039 cf, Atten=47%, Lag= 7.7 min Discarded = 0.02 cfs @ 5.82 hrs, Volume= 2,091 cf Primary - 1.37 cfs @ 12.21 hrs, Volume= 6,948 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs 13 Peak Elev= 165.46' @ 12.21 hrs Surf.Area= 900 sf Storage= 2,287 cf Plug-Flow detention time= 81.6 min calculated for 9,036 cf(100% of inflow) Center-of-Mass det. time= 81.7 min (841.4- 759.7) 505 Sutton Proposed Conditions Hydrologic Analysi Type iii 24-hr 100-Year Rainfali=8.60" Prepared by Microsoft Printed 8/29/2019 H droCADO 10.00-13 sln 00401 ©2014 H droCAD Software Solutions LLC Page 57 Volume Invert Avail.Stora a Storage Description #1A 162.00' 400 of 50.00'W x 18.00'L x 4.67'H Field A 4,200 of Overall - 3,200 cf Embedded = 1,000 of x 40.0% Voids #2A 162.50' 2,311 cf retain It 3.5' x 12 Inside#1 Inside= 84.0"W x 42.0"H => 25.10 sf x 8.001 = 200.8 of Outside= 96.0"W x 50.0"H => 33.33 sf x 8.00'L= 266.7 of 6 Rows adjusted for 98.2 of perimeter wall 2,711 of Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 162.50' 12.0" Round Culvert L= 23.0' Ke= 0.500 Inlet/Outlet Invert= 162.50' / 158.32' S= 0.1817 '/' Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 162.90' 4.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 163.80' 3.0" Vert. OrificelGrate C= 0.600 #4 Device 1 164.80' 4.0"Vert. Orifice/Grate C= 0.600 #5 Device 1 165.40' 12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #6 Discarded 162.00' 1.020 inlhr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.02 cfs @ 5.82 hrs HW=162.05' (Free Discharge) t-6=Exfiltration (Exfiltration Controls 0,02 cfs) Primary OutFlow Max=1.37 cfs @ 12.21 hrs HW=165.45' TW=0.00' (Dynamic Tailwater) t--1=Culvert (Passes 1.37 cfs of 5.93 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.65 cfs @ 7.44 fps) 3=Orifice/Grate (Orifice Controls 0.29 cfs @ 5.96 fps) Orifice/Grate (Orifice Controls 0.29 cfs @ 3,36 fps) =OrificelGrate (Weir Controls 0.13 cfs @ 0.77 fps) Summary for Pond 3P: Retain It Inflow Area = 13,844 sf,100,00% Impervious, Inflow Depth = 8.36" for 100-Year event Inflow - 2.68 cfs @ 12.08 hrs, Volume= 9,644 of Outflow -- 2.59 cfs @ 12,11 hrs, Volume= 9,644 of, Atten= 3%, Lag= 1.3 min Discarded = 0.01 cfs @ 2.38 hrs, Volume= 1,583 of Primary - 2.58 cfs @ 12.11 hrs, Volume= 8,061 cf Routing by Dyn-Stor-Ind method, Time Span= 0,00-36.00 hrs, dt= 0.01 hrs 13 Peak Elev= 165,43' @ 12.11 hrs Surf.Area= 612 sf Storage= 1,273 of Plug-Flow detention time= 63.6 min calculated for 9,642 of (100% of inflow) Center-of-Mass det. time= 63.7 min ( 804.0- 740.3 ) 505 Sutton Proposed Conditions Hydrologic Analyst Type 11124-hr 900-Year Rainfall=8.60" Prepared by Microsoft Printed 8/29/2019 H droCADO 10,00-13 s/n 00401 ©2014 H droCAD Software Solutions LLC Pa e 58 Volume Invert Avail.Stora a Storage Description #1A 162.60' 249 cf 34.00'W x 18.001 x 3.67'H Field A 2,244 cf Overall - 1,621 cf Embedded = 623 cf x 40.0% Voids #2A 163.00' 1,084 of retain_it 2.5' x 8 Inside#1 Inside= 84.0"W x 30.0"H => 17.56 sf x 8.001 = 140.4 of Outside= 96.0"W x 38.0"H => 25.33 sf x 8.001 = 202.7 cf 4 Rows adjusted for 39.6 of perimeter wall 1,333 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routin Invert Outlet Devices #1 Primary 163.50' 12.0" Round Culvert L= 23.0' Ke= 0.500 Inlet/Outlet Invert= 163.50' 1 158.32' S= 0.2252 7' Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 163.50' 4.0"Vert. Orifice/Grate C= 0.600 #3 Device 1 164.30' 6.0"Vert. Orifice/Grate C= 0.600 #4 Device 1 165.20' 12.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #5 Discarded 162,50' 1.020 inlhr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.01 cfs @ 2.38 hrs HW=162.54' (Free Discharge) L5=Exfiitration (Exfiitration Controls 0.01 cfs) Primary OutFlow Max=2.57 cfs @ 12.11 hrs HW=165.43' TW=0.00' (Dynamic Tailwater) L =Culvert (Passes 2.57 cfs of 4.52 cfs potential flow) 2=Orifice/Grate (Orifice Controls 0.56 cfs @ 6.39 fps) 3=Orifice/Grate (Orifice Controls 0.89 cfs @ 4.51 fps) =Orifice/Grate (Weir Controls 1.13 cfs @ 1.57 fps) Summary for Pond 4P: Detention System 'I Inflow Area = 43,305 sf, 92.68% Impervious, inflow Depth = 6.56" for 100-Year event Inflow 6.22 cfs @ 12.09 hrs, Volume= 23,676 cf Outflow - 2.60 cfs @ 12.42 hrs, Volume= 23,488 cf, Atten= 58%, Lag= 19.8 min Primary 2.60 cfs @ 12.42 hrs, Volume= 23,488 cf Routing by Dyn-Star-Ind method, Time Span= 0.00-36.00 hrs, dt= 0,01 hrs 13 Peak Elev= 165,87' @ 12.42 hrs Surf.Area= 5,300 sf Storage= 8,661 cf Plug-Flow detention time= 134.3 min calculated for 23,481 cf(99% of inflow) Center-of-Mass det, time= 129.2 min (890.8- 761.5) Volume Invert Avail.Stora a Storage Description #1A 163.90' 329 cf 106.00'W x 50.001 x 2.67'H Field A 14,133 cf Overall - 13,312 cf Embedded = 821 cf x 40.0% Voids #2A 163.90' 8,530 cf retain_it 2.0' x 78 Inside#1 Inside= 84.0"W x 24.0"H => 13.78 sf x 8.00'L = 110.3 cf Outside= 96.0"W x 32.0"H => 21.33 sf x 8.00'L = 170.7 of 13 Rows adjusted for 71.8 cf perimeter wall 8,859 of Total Available Storage i 505 Sutton Proposed Conditions Hydrologic Analysi Type lil 24-hr 100-Year Rainfall=8.60" Prepared by Microsoft Printed 8/29/2019 H droCAD®10.00-13 sln 00401 02014 H droCAD Software Solutions LLC Page 59 Storage Group A created with Chamber Wizard I Device Routing Invert Outlet Devices _ #1 Primary 169.00' 12.0" Round Culvert L= 34.0' Ke= 0.500 Inlet/Outlet Invert= 159.00' 1 158.32' S= 0.0200 ? Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 163.90' 3.0"Vert. OrificelGrate C= 0.600 #3 Device 1 164.30' 8.0"W x 2.0" H Vert. Orifice/Grate C= 0.600 #4 Device 1 165,60' 4.0' long x ON 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 Primary OutFlow Max=2.60 cfs @ 12.42 hrs HW=165.87' TW=0.00' (Dynamic Tailwater) 'L =Culvert (Passes 2.60 cfs of 9.55 cfs potential flow) 2=Ori#ice1Grate (Orifice Controls 0.32 cfs @ 6.66 fps) 3=OrificelGrate (Orifice Controls 0.65 cfs @ 5.88 fps) =Broad-Crested Rectangular Weir (Weir Controls 1.63 cfs @ 1.49 fps) Summary for Pond 5P: Infiltration System 4 Inflow Area = 15,214 sf,100.00% Impervious, Inflow Depth = 8.36" for 100-Year event Inflow - 2.95 cfs @ 12.08 hrs, Volume= 10,599 of Outflow - 1.22 cfs @ 12.28-hrs, Volume= 10,599 cf, Atten= 59%, Lag= 11.9 min Discarded - 0.05 cfs @ 7.22 hrs, Volume= 5,648 cf Primary - 1.17 cfs @ 12.28 hrs, Volume= 4,951 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs/3 Peak Elev= 167.95' @ 12.28 hrs Surf.Area= 2,116 sf Storage= 3,797 of Plug-Flow detention time= 226.7 min calculated for 10,599 cf(100% of inflow) Center-of-Mass det. time= 226.7 min ( 967.0 - 740.3 ) Volume Invert Avail.Stora a Storage Description #1 165.50' 635 cf Custom Stage Data (Prismatic)Listed below (Recalc) 6,708 of Overall - 5,120 cf Embedded = 1,688 cf x 40.0% Voids #2 166.00' 3,308 cf retain_it 2.0' x 30 Inside#1 Inside= 84.0"W x 24.0"H => 13.78 sf x 8.00'L = 110.3 cf Outside= 96.0"W x 32.0"H => 21.33 sf x 8.00'L= 170.7 cf 3,943 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store feet s -ft cubic-feet cubic-feet 165.50 2,116 0 0 168.67 2,116 6,708 6,708 i 505 Sutton Proposed Conditions Hydrologic Analysi Type III 24-hr 100-Year Rainfall=8.60" Prepared by Microsoft Printed 8/29/2019 H droCAD© 10.00-13 sln 00401 O 2014 H droCAD Software Solutions LLC Page 60 Device Routing Invert Outlet Devices #1 Primary 165.40' 12.0" Round Culvert L= 30.0' Ke= 0.500 Inlet/ Outlet Invert= 165.40'/ 164.95' S= 0.0150 '1' Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Device 1 167.00' 12.0"W x 3.0" H Vert,Orifice1Grate C= 0.600 #3 Device 1 167.80' 9.0" Vert. Orifice/Grate C= 0.600 #4 Device 1 168,00' 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 #5 Discarded 165.50' 1.020 inlhr Exfiltration over Surface area Phasedn= 0.01' Discarded Outflow Max=0.05 cfs @ 7.22 hrs HW=165.53' (Free Discharge) L5=Exfiltration (Exfiltration Controls 0.05 cfs) Primary OutF'low Max=1.17 cfs @ 12.28 hrs HW=167.95' TW-165.81' (Dynamic Tailwater) L =Culvert (Passes 1.17 cfs of 5.41 cfs potential flow) 2=Orifice/Grate (Orifice Controls 1.09 cfs @ 4.36 fps) 3=Orifice/Grate (Orifice Controls 0.08 cfs @ 1.31 fps) =Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Summary for Pond 6P; Infiltration Trench Inflow Area = 2,552 sf,100.00% Impervious, inflow Depth = 8.36" for 100-Year event Inflow - 0.49 cfs @ 12.08 hrs, Volume= 1,778 cf Outflow - 0.49 cfs @ 12.08 hrs, Volume= 1,778 cf, Atten= 0%, Lag= 0.0 min Discarded = 0.01 cfs @ 7.32 hrs, Volume= 458 cf Primary - 0.49 cfs @ 12.08 hrs, Volume= 1,320 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs/3 Peak Elev= 170,52' @ 12.08 hrs Surf.Area= 232 sf Storage= 72 cf Plug-Flow detention time= 52.2 min calculated for 1,777 cf(100% of inflow) Center-of-Mass det. time= 52.3 min ( 792.6 - 740.3 ) Volume Invert Ayail.Storage Storage Description #1 169.00' 70 cf Stone Trench Prismatic Listed below R c (Prismatic) { ecalc) 174 cf Overall x 40.0% Voids #2 170.50'_ 12 cf Area Over Trench (Prismatic)Listed below (Recalc) 81 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 169,00 116 0 0 170.50 116 174 174 Elevation Surf.Area Inc.Store Cum.Store _ { q- ) ( t)feet) s ft cubic-feet) cubic-fee„ (...,.._ 170.50 116 0 0 170.60 116 12 12 i 506 Sutton Proposed Conditions Hydrologic Analysi Type 1i124-hr 100-Year Rainfall=8.60" Prepared by Microsoft Printed 8/29/2019 HydroCAD010.00-13 s/n 00401 02014 HydroCAD Software Solutions LLC Page 61 Device Routing Invert Outlet Devices #1 Primary 170.50' 70.0' long x 1.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 #2 Discarded 169.00' 1.020 inlhr Exfiltration over Surface area Phase-In= 0.01' Discarded OutFlow Max=0.01 cfs @ 7.32 hrs HW=170.50' (Free Discharge) t-2=EAltration (EAltration Controls 0.01 cfs) Primary OutFlow Max=0.49 cfs @ 12.08 hrs HW=170.52' TW=0.00' (Dynamic Tailwater) t-1=Broad-Crested Rectangular Weir (Weir Controls 0.49 cfs @ 0.37 fps)