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POST HYDROCAD BIELECKI B4 O-D 1D B#e CB#3 ST MH#1 ce � 12 A4P DEFENDER#1 � SED F REBAY 3P `� SMA#1 UNDERGROUND 2P v BrJ Q DESIGN POINT 5P SMA#4- INFIL/iRATION BASIN SMA#3- / BIORETENTION 1P / SMA#2- / UNDERGROU D B2 �p 6P CB cB#1 9P �TM MHl%\, / OFF1 / / ce CB / 8P 7P cB#2 DEFENDER#2 A B1 DESIGN POINT Subcat Reach on LinkE nage Diagram for POSTDEVELOPMENT_BIELECKI y The Environmental Design Partnership, LLP, Printed 9/13/2017 D@ 8.50 s/n 000476 ©2007 Hydro CAD Software Solutions LLC POSTDEVELOPM ENT_BI ELECKI Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 4.436 30 Woods, Good, HSG A (137) 0.200 32 Woods/grass comb., Good, HSG A (131) 0.485 35 Brush, Fair, HSG A (OFF1) 1.373 39 >75% Grass cover, Good, HSG A (131,132,133,134,135,136) 5.747 43 Woods/grass comb., Fair, HSG A (134,137) 0.233 49 Basin, adjacenet area (136) 0.016 98 EXISTING ROAD (OFF1) 3.010 98 Paved parking & roofs (131,132,133,134,135,136) 15.501 TOTAL AREA POSTDEVELOPM ENT_BI ELECKI Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Goup Numbers 12.241 HSG A B1, B2, B3, B4, B5, B6, B7, OFF1 0.000 HSG B 0.000 HSG C 0.000 HSG D 3.260 Other B1, B2, B3, B4, B5, B6, OFF1 15.501 TOTAL AREA POSTDEVELOPMENT_BIELECKI Type // 24-hr 1-YR Rainfall=2.15" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 4 Time span=5.00-60.00 hrs, dt=0.05 hrs, 1101 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method SubcatchmentB1: Runoff Area=49.635 sf 64.37% Imperious Runoff Depth=0.49" Flow Length=680' Tc=6.0 min CN=76 Runoff=0.92 cfs 0.047 of SubcatchmentB2: Runoff Area=29,125sf 73.91% Impervious RunoffDepth=0.80" Tc=6.0 min CN=83 Runoff=0.93 cfs 0.045 of SubcatchmentB3: Runoff Area=11,575 sf 74.30% Imperious Runoff Depth=0.80" Tc=6.0 min CN=83 Runoff=0.37 cfs 0.018 of SubcatchmentB4: Runoff Area=72.360 sf 47.66% Imperious Runoff Depth=0.25" Flow Length=460' Tc=9.7 min CN=68 Runoff=0.41 cfs 0.034 of SubcatchmentB5: Runoff Area=34.205 sf 71.47% Imperious Runoff Depth=0.70" Tc=6.0 min CN=81 Runoff=0.95 cfs 0.046 of SubcatchmentB6: Runoff Area=36.075 sf 28.07% Imperious Runoff Depth=0.06" Tc=6.0 min CN=58 Runoff=0.01 cfs 0.004 of SubcatchmentB7: Runoff Area=420.400 sf 0.00% Imperious Runoff Depth=0.00" Flow Length=640' Tc=60.0 min CN=37 Runoff=0.00 cfs 0.000 of SubcatchmentOFF1: Runoff Area=21.830 sf 3.21% Imperious Runoff Depth=0.00" Flow Length=50' Slope=0.0100 '/' Tc=11.7 min CN=37 Runoff=0.00 cfs 0.000 of Pond 1 P: SMA#2- UNDERGROUND Peak EIev=490.00' Storage=3 cf Inflow=1.85 cfs 0.091 of Outflow=1.83 cfs 0.091 of Pond 2P: SMA#4- INFILTRATION BASIN Peak EIev=490.00' Storage=0 cf Inflow=0.00 cfs 0.000 of Discarded=0.00 cfs 0.000 of Primary=0.00 cfs 0.000 of Outflow=0.00 cfs 0.000 of Pond 3P: SMA#1 - UNDERGROUND Peak EIev=490.00' Storage=0 cf Inflow=0.69 cfs 0.052 of Outflow=0.69 cfs 0.052 of Pond 4P: SED FOREBAY Peak EIev=490.23' Storage=186 cf Inflow=0.01 cfs 0.004 of Outflow=0.00 cfs 0.000 of Pond 5P: SMA#3- BIORETENTION Peak EIev=493.94' Storage=1,081 cf Inflow=0.95 cfs 0.046 of Discarded=0.03 cfs 0.046 of Primary=0.00 cfs 0.000 of Outflow=0.03 cfs 0.046 of Pond 6P: CB#1 Peak EIev=494.27' Inflow=0.93 cfs 0.045 of 12.0"x 255.0' Culvert Outflow=0.93 cfs 0.045 of Pond 7P: CB#2 Peak EIev=492.28' Inflow=1.85 cfs 0.091 of Primary=0.96 cfs 0.080 of Secondary=0.91 cfs 0.012 of Outflow=1.85 cfs 0.091 of Pond 8P: DEFENDER#2 Peak EIev=492.09' Inflow=0.96 cfs 0.080 of 12.0"x 3.0' Culvert Outflow=0.96 cfs 0.080 of POSTDEVELOPMENT_BIELECKI Type // 24-hr 1-YR Rainfall=2.15" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 5 Pond 9P: STM MH#2 Peak Elev=491.45' Inflow=1.85 cfs 0.091 of Primary=1.85 cfs 0.091 of Secondary=0.00 cfs 0.000 of Outflow=1.85 cfs 0.091 of Pond 10P: CB#3 Peak EIev=495.00' Inflow=0.37 cfs 0.018 of 12.0"x 246.0' Culvert Outflow=0.37 cfs 0.018 of Pond 11P: CB#5 Peak EIev=492.30' Inflow=0.69 cfs 0.052 of Primary=0.50 cfs 0.049 of Secondary=0.21 cfs 0.002 of Outflow=0.69 cfs 0.052 of Pond 12P: DEFENDER#1 Peak EIev=492.24' Inflow=0.50 cfs 0.049 of 10.0"x 4.0' Culvert Outflow=0.50 cfs 0.049 of Pond 13P: STM MH#1 Peak EIev=491.05' Inflow=0.21 cfs 0.002 of Primary=0.21 cfs 0.002 of Secondary=0.00 cfs 0.000 of Outflow=0.21 cfs 0.002 of Link A: DESIGN POINT Inflow=0.00 cfs 0.000 of Primary=0.00 cfs 0.000 of Link B: DESIGN POINT Inflow=0.00 cfs 0.000 of Primary=0.00 cfs 0.000 of Total Runoff Area = 15.501 ac Runoff Volume = 0.193 of Average Runoff Depth = 0.15" 80.47% Pervious = 12.474 ac 19.53% Impervious = 3.027 ac POSTDEVELOPMENT_BIELECKI Type // 24-hr 1-YR Rainfall=2.15" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment 1131: Runoff = 0.92 cfs @ 11.99 hrs, Volume= 0.047 af, Depth= 0.49" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=2.15" Area (so CN Description 31,950 98 Paved parking & roofs 8,700 32 Woods/grass comb., Good, HSG A 8,985 39 >75% Grass cover, Good, HSG A 49,635 76 Weighted Average 17,685 Pervious Area 31,950 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.1 100 0.0300 1.50 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.75" 4.8 580 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps 5.9 680 Total, Increased to minimum Tc= 6.0 min Summary for Subcatchment 1132: Runoff = 0.93 cfs @ 11.98 hrs, Volume= 0.045 af, Depth= 0.80" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=2.15" Area (so CN Description 21,525 98 Paved parking & roofs 7,600 39 >75% Grass cover, Good, HSG A 29,125 83 Weighted Average 7,600 Pervious Area 21,525 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1133: Runoff = 0.37 cfs @ 11.98 hrs, Volume= 0.018 af, Depth= 0.80" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type 11 24-hr 1-YR Rainfall=2.15" POSTDEVELOPMENT_BIELECKI Type // 24-hr 1-YR Rainfall=2.15" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 ©2007 HydroCAD Software Solutions LLC Page 7 Area (so CN Description 8,600 98 Paved parking & roofs 2,975 39 >75% Grass cover, Good, HSG A 11,575 83 Weighted Average 2,975 Pervious Area 8,600 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1134: Runoff = 0.41 cfs @ 12.05 hrs, Volume= 0.034 af, Depth= 0.25" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=2.15" Area (so CN Description 34,490 98 Paved parking & roofs 23,145 43 Woods/grass comb., Fair, HSG A 14,725 39 >75% Grass cover, Good, HSG A 72,360 68 Weighted Average 37,870 Pervious Area 34,490 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.7 90 0.0500 0.22 Sheet Flow, Grass: Short n= 0.150 P2= 2.75" 3.0 370 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps 9.7 460 Total Summary for Subcatchment 1135: Runoff = 0.95 cfs @ 11.98 hrs, Volume= 0.046 af, Depth= 0.70" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=2.15" Area (so CN Description 24,445 98 Paved parking & roofs 9,760 39 >75% Grass cover, Good, HSG A 34,205 81 Weighted Average 9,760 Pervious Area 24,445 Impervious Area POSTDEVELOPMENT_BIELECKI Type // 24-hr 1-YR Rainfall=2.15" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 8 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1136: Runoff = 0.01 cfs @ 12.94 hrs, Volume= 0.004 af, Depth= 0.06" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=2.15" Area (so CN Description 10,125 98 Paved parking & roofs 15,780 39 >75% Grass cover, Good, HSG A 10,170 49 Basin, adjacenet area 36,075 58 Weighted Average 25,950 Pervious Area 10,125 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1137: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=2.15" Area (so CN Description 227,185 43 Woods/grass comb., Fair, HSG A 193,215 30 Woods, Good, HSG A 420,400 37 Weighted Average 420,400 Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 30.6 100 0.0100 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.75" 29.4 540 0.0150 0.31 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 60.0 640 Total Summary for Subcatchment OFF1: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type 11 24-hr 1-YR Rainfall=2.15" POSTDEVELOPMENT_BIELECKI Type // 24-hr 1-YR Rainfall=2.15" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 ©2007 HydroCAD Software Solutions LLC Page 9 Area (so CN Description 21,130 35 Brush, Fair, HSG A 700 98 EXISTING ROAD 21,830 37 Weighted Average 21,130 Pervious Area 700 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 11.7 50 0.0100 0.07 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Summary for Pond 1 P: SMA#2 - UNDERGROUND Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 0.61" for 1-YR event Inflow = 1.85 cfs @ 11.98 hrs, Volume= 0.091 of Outflow = 1.83 cfs @ 11.98 hrs, Volume= 0.091 af, Atten= 1%, Lag= 0.0 min Discarded = 1.83 cfs @ 11.98 hrs, Volume= 0.091 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 490.00' @ 12.00 hrs Surf.Area= 5,400 sf Storage= 3 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 0.5 min ( 866.0 - 865.5 ) Volume Invert Avail.Storage Storage Description #1 490.50' 3,184 cf 28.9"W x 16.0"H x 7.12'L StormTech SC-310x 216 Inside#2 #2 490.00' 4,126 cf STONE (Pyramidal)Listed below (Recalc) 13,500 cf Overall - 3,184 cf Embedded = 10,316 cf x 40.0% Voids 7,311 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (cubic-feet) (cubic-feet) (sq-ft) 490.00 5,400 0 0 5,400 492.50 5,400 13,500 13,500 6,135 Device Routing Invert Outlet Devices #1 Discarded 490.00' 15.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=1.87 cfs @ 11.98 hrs HW=490.00' (Free Discharge) L1=Exfiltration (Exfiltration Controls 1.87 cfs) Summary for Pond 2P: SMA#4 - INFILTRATION BASIN Inflow Area = 1.613 ac, 49.19% Impervious, Inflow Depth = 0.00" for 1-YR event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Discarded = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of POSTDEVELOPMENT_BIELECKI Type // 24-hr 1-YR Rainfall=2.15" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 10 Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Starting Elev= 489.00' Surf.Area= 0 sf Storage= 0 cf Peak Elev= 490.00' @ 5.00 hrs Surf.Area= 4,845 sf Storage= 0 cf Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no inflow) Volume Invert Avail.Storage Storage Description #1 490.00' 16,526 cf DETENTION BASIN (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 490.00 4,845 380.0 0 0 4,845 492.50 8,550 440.0 16,526 16,526 8,892 Device Routing Invert Outlet Devices #1 Discarded 490.00' 2.000 in/hr Exfiltration over Surface area #2 Primary 491.50' 10.0' long x 30.0' breadth OVERFLOW WEIR Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Discarded OutFlow Max=0.00 cfs @ 5.00 hrs HW=490.00' (Free Discharge) L1=Exfiltration (Passes 0.00 cfs of 0.22 cfs potential flow) Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=490.00' TW=0.00' (Dynamic Tailwater) L2=OVERFLOW WEIR ( Controls 0.00 cfs) Summary for Pond 3P: SMA#1 - UNDERGROUND Inflow Area = 1.927 ac, 51.34% Impervious, Inflow Depth = 0.32" for 1-YR event Inflow = 0.69 cfs @ 12.02 hrs, Volume= 0.052 of Outflow = 0.69 cfs @ 12.02 hrs, Volume= 0.052 af, Atten= 0%, Lag= 0.0 min Discarded = 0.69 cfs @ 12.02 hrs, Volume= 0.052 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 490.00' @ 5.00 hrs Surf.Area= 4,515 sf Storage= 0 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 0.0 min ( 903.0 - 903.0 ) Volume Invert Avail.Storage Storage Description #1 490.50' 2,654 cf 28.9"W x 16.0"H x 7.12'L StormTech SC-310x 180 Inside#2 #2 490.00' 3,454 cf STONE (Pyramidal)Listed below (Recalc) 11,288 cf Overall - 2,654 cf Embedded = 8,634 cf x 40.0% Voids 6,107 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (cubic-feet) (cubic-feet) (sq-ft) 490.00 4,515 0 0 4,515 492.50 4,515 11,288 11,288 5,187 POSTDEVELOPMENT_BIELECKI Type // 24-hr 1-YR Rainfall=2.15" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 11 Device Routing Invert Outlet Devices #1 Discarded 490.00' 15.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.00 cfs @ 12.02 hrs HW=490.00' (Free Discharge) L1=Exfiltration (Passes 0.00 cfs of 1.57 cfs potential flow) Summary for Pond 4P: SED FOREBAY Inflow Area = 0.828 ac, 28.07% Impervious, Inflow Depth = 0.06" for 1-YR event Inflow = 0.01 cfs @ 12.94 hrs, Volume= 0.004 of Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 490.23' @ 24.40 hrs Surf.Area= 868 sf Storage= 186 cf Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 490.00' 3,527 cf FOREBAY (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 490.00 770 115.0 0 0 770 492.50 2,170 180.0 3,527 3,527 2,340 Device Routing Invert Outlet Devices #1 Primary 491.25' 10.0' long x 6.0' 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 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.37 2.51 2.70 2.68 2.68 2.67 2.65 2.65 2.65 2.65 2.66 2.66 2.67 2.69 2.72 2.76 2.83 Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=490.00' TW=490.00' (Dynamic Tailwater) t--1=Broad-Crested Rectangular Weir( Controls 0.00 cfs) Summary for Pond 5P: SMA#3 - BIORETENTION Inflow Area = 0.785 ac, 71.47% Impervious, Inflow Depth = 0.70" for 1-YR event Inflow = 0.95 cfs @ 11.98 hrs, Volume= 0.046 of Outflow = 0.03 cfs @ 11.80 hrs, Volume= 0.046 af, Atten= 97%, Lag= 0.0 min Discarded = 0.03 cfs @ 11.80 hrs, Volume= 0.046 of Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 493.94' @ 15.72 hrs Surf.Area= 1,145 sf Storage= 1,081 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 451.9 min ( 1,310.3 - 858.3 ) POSTDEVELOPMENT_BIELECKI Type // 24-hr 1-YR Rainfall=2.15" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 12 Volume Invert Avail.Storage Storage Description #1 493.00' 4,841 cf BIORETENTION (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Voids Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (%) (cubic-feet) (cubic-feet) (sq-ft) 493.00 1,145 170.0 20.0 0 0 1,145 496.00 1,145 170.0 100.0 3,435 3,435 1,655 497.00 1,685 185.0 100.0 1,406 4,841 2,114 Device Routing Invert Outlet Devices #1 Device 2 496.50' 1.50' x 1.50' Horiz. CB OVERFLOW Limited to weir flow C= 0.600 #2 Primary 493.60' 12.0" x 120.0' long OUTLET CULVERT CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 493.00' S= 0.00507' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #3 Discarded 493.00' 1.000 in/hr EXFIL TO BIO over Surface area Discarded OutFlow Max=0.03 cfs @ 11.80 hrs HW=493.06' (Free Discharge) L3=EXFIL TO BIO (Exfiltration Controls 0.03 cfs) Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=493.00' TW=490.00' (Dynamic Tailwater) L2=OUTLET CULVERT ( Controls 0.00 cfs) L1=CB OVERFLOW ( Controls 0.00 cfs) Summary for Pond 6P: CB#1 Inflow Area = 0.669 ac, 73.91% Impervious, Inflow Depth = 0.80" for 1-YR event Inflow = 0.93 cfs @ 11.98 hrs, Volume= 0.045 of Outflow = 0.93 cfs @ 11.98 hrs, Volume= 0.045 af, Atten= 0%, Lag= 0.0 min Primary = 0.93 cfs @ 11.98 hrs, Volume= 0.045 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 494.27' @ 11.98 hrs Device Routing Invert Outlet Devices #1 Primary 493.70' 12.0" x 255.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.30' S= 0.00947' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.89 cfs @ 11.98 hrs HW=494.25' TW=492.26' (Dynamic Tailwater) t--1=Culvert (Inlet Controls 0.89 cfs @ 2.00 fps) Summary for Pond 7P: CB#2 Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 0.61" for 1-YR event Inflow = 1.85 cfs @ 11.98 hrs, Volume= 0.091 of Outflow = 1.85 cfs @ 11.98 hrs, Volume= 0.091 af, Atten= 0%, Lag= 0.0 min Primary = 0.96 cfs @ 11.96 hrs, Volume= 0.080 of Secondary = 0.91 cfs @ 11.99 hrs, Volume= 0.012 of POSTDEVELOPMENT_BIELECKI Type // 24-hr 1-YR Rainfall=2.15" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 13 Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 492.28' @ 11.99 hrs Device Routing Invert Outlet Devices #1 Secondary 491.80' 18.0" x 9.0' long TO UNDERGROUND CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.50' S= 0.03337' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 491.30' 10.0" x 7.0' long TO DEFENDER CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 490.70' S= 0.08577' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.85 cfs @ 11.96 hrs HW=492.25' TW=492.08' (Dynamic Tailwater) L2=TO DEFENDER (Inlet Controls 0.85 cfs @ 1.55 fps) Secondary OutFlow Max=0.87 cfs @ 11.99 hrs HW=492.27' TW=491.44' (Dynamic Tailwater) L1=TO UNDERGROUND (Inlet Controls 0.87 cfs @ 1.84 fps) Summary for Pond 8P: DEFENDER #2 Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 0.53" for 1-YR event Inflow = 0.96 cfs @ 11.96 hrs, Volume= 0.080 of Outflow = 0.96 cfs @ 11.96 hrs, Volume= 0.080 af, Atten= 0%, Lag= 0.0 min Primary = 0.96 cfs @ 11.96 hrs, Volume= 0.080 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 492.09' @ 11.96 hrs Device Routing Invert Outlet Devices #1 Primary 491.40' 12.0" x 3.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.40' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.94 cfs @ 11.96 hrs HW=492.08' TW=491.43' (Dynamic Tailwater) t--1=Culvert (Barrel Controls 0.94 cfs @ 2.34 fps) Summary for Pond 9P: STM MH#2 Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 0.61" for 1-YR event Inflow = 1.85 cfs @ 11.98 hrs, Volume= 0.091 of Outflow = 1.85 cfs @ 11.98 hrs, Volume= 0.091 af, Atten= 0%, Lag= 0.0 min Primary = 1.85 cfs @ 11.98 hrs, Volume= 0.091 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 491.45' @ 11.98 hrs POSTDEVELOPMENT_BIELECKI Type // 24-hr 1-YR Rainfall=2.15" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 14 Device Routing Invert Outlet Devices #1 Primary 490.83' 12.0" x 35.0' long TO UNDEGROUND CPP, square edge headwall, Ke= 0.500 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 490.83' 18.0" x 3.0' long TO ISOLATOR ROW CPP, square edge headwall, Ke= 0.500 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #3 Secondary 491.83' 12.0" x 185.0' long OVERFLOW CPP, square edge headwall, Ke= 0.500 Outlet Invert= 490.80' S= 0.00567' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=1.77 cfs @ 11.98 hrs HW=491.43' TW=490.00' (Dynamic Tailwater) 1=TO UNDEGROUND (Barrel Controls 0.66 cfs @ 1.90 fps) t2=TO ISOLATOR ROW (Barrel Controls 1.11 cfs @ 2.47 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=490.83' TW=490.00' (Dynamic Tailwater) L3=OVERFLOW ( Controls 0.00 cfs) Summary for Pond 10P: C113#3 Inflow Area = 0.266 ac, 74.30% Impervious, Inflow Depth = 0.80" for 1-YR event Inflow = 0.37 cfs @ 11.98 hrs, Volume= 0.018 of Outflow = 0.37 cfs @ 11.98 hrs, Volume= 0.018 af, Atten= 0%, Lag= 0.0 min Primary = 0.37 cfs @ 11.98 hrs, Volume= 0.018 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 495.00' @ 11.98 hrs Device Routing Invert Outlet Devices #1 Primary 494.70' 12.0" x 246.0' long Culvert CPP, square edge headwall, Ke= 0.500 Outlet Invert= 491.70' S= 0.0122 T Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.35 cfs @ 11.98 hrs HW=494.99' TW=492.25' (Dynamic Tailwater) t--1=Culvert (Inlet Controls 0.35 cfs @ 1.84 fps) Summary for Pond 11 P: C113#5 Inflow Area = 1.927 ac, 51.34% Impervious, Inflow Depth = 0.32" for 1-YR event Inflow = 0.69 cfs @ 12.02 hrs, Volume= 0.052 of Outflow = 0.69 cfs @ 12.02 hrs, Volume= 0.052 af, Atten= 0%, Lag= 0.0 min Primary = 0.50 cfs @ 12.00 hrs, Volume= 0.049 of Secondary = 0.21 cfs @ 12.04 hrs, Volume= 0.002 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 492.30' @ 12.04 hrs POSTDEVELOPMENT_BIELECKI Type // 24-hr 1-YR Rainfall=2.15" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 15 Device Routing Invert Outlet Devices #1 Secondary 492.10' 18.0" x 10.0' long TO UNDERGROUND CPP, square edge headwall, Ke= 0.500 Outlet Invert= 491.50' S= 0.06007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 491.70' 10.0" x 6.0' long TO DEFENDER CPP, square edge headwall, Ke= 0.500 Outlet Invert= 491.20' S= 0.08337' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.38 cfs @ 12.00 hrs HW=492.28' TW=492.24' (Dynamic Tailwater) L2=TO DEFENDER (Outlet Controls 0.38 cfs @ 1.31 fps) Secondary OutFlow Max=0.19 cfs @ 12.04 hrs HW=492.29' TW=491.04' (Dynamic Tailwater) L1=TO UNDERGROUND (Inlet Controls 0.19 cfs @ 1.49 fps) Summary for Pond 12P: DEFENDER #1 Inflow Area = 1.927 ac, 51.34% Impervious, Inflow Depth = 0.31" for 1-YR event Inflow = 0.50 cfs @ 12.00 hrs, Volume= 0.049 of Outflow = 0.50 cfs @ 12.00 hrs, Volume= 0.049 af, Atten= 0%, Lag= 0.0 min Primary = 0.50 cfs @ 12.00 hrs, Volume= 0.049 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 492.24' @ 12.00 hrs Device Routing Invert Outlet Devices #1 Primary 491.80' 10.0" x 4.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.70' S= 0.02507' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.50 cfs @ 12.00 hrs HW=492.24' TW=490.00' (Dynamic Tailwater) t--1=Culvert (Barrel Controls 0.50 cfs @ 2.53 fps) Summary for Pond 13P: STM MH#1 Inflow = 0.21 cfs @ 12.04 hrs, Volume= 0.002 of Outflow = 0.21 cfs @ 12.04 hrs, Volume= 0.002 af, Atten= 0%, Lag= 0.0 min Primary = 0.21 cfs @ 12.04 hrs, Volume= 0.002 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 491.05' @ 12.04 hrs Device Routing Invert Outlet Devices #1 Primary 490.83' 12.0" x 35.0' long TO UNDERGROUND CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 490.83' 18.0" x 2.0' long TO ISOLATOR ROW CPP, projecting, no headwall, Ke= 0.900 POSTDEVELOPMENT_BIELECKI Type // 24-hr 1-YR Rainfall=2.15" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 16 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #3 Secondary 491.83' 12.0" x 163.0' long OVERFLOW CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 490.80' S= 0.00637' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.19 cfs @ 12.04 hrs HW=491.04' TW=490.00' (Dynamic Tailwater) �11=TO UNDERGROUND (Barrel Controls 0.06 cfs @ 0.78 fps) 2=TO ISOLATOR ROW (Barrel Controls 0.13 cfs @ 1.28 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=490.83' TW=490.00' (Dynamic Tailwater) L3=OVERFLOW ( Controls 0.00 cfs) Summary for Link A: DESIGN POINT Inflow Area = 0.501 ac, 3.21% Impervious, Inflow Depth = 0.00" for 1-YR event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Summary for Link B: DESIGN POINT Inflow Area = 11.264 ac, 7.05% Impervious, Inflow Depth = 0.00" for 1-YR event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs POSTDEVELOPMENT_BIELECKI Type // 24-hr 10-YR Rainfall=3.60" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 17 Time span=5.00-60.00 hrs, dt=0.05 hrs, 1101 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method SubcatchmentB1: Runoff Area=49.635 sf 64.37% Imperious Runoff Depth=1.44" Flow Length=680' Tc=6.0 min CN=76 Runoff=2.85 cfs 0.137 of SubcatchmentB2: Runoff Area=29,125sf 73.91% Impervious Runoff Depth=1.94" Tc=6.0 min CN=83 Runoff=2.23 cfs 0.108 of SubcatchmentB3: Runoff Area=11,575 sf 74.30% Imperious Runoff Depth=1.94" Tc=6.0 min CN=83 Runoff=0.89 cfs 0.043 of SubcatchmentB4: Runoff Area=72.360 sf 47.66% Imperious Runoff Depth=0.96" Flow Length=460' Tc=9.7 min CN=68 Runoff=2.31 cfs 0.133 of SubcatchmentB5: Runoff Area=34.205 sf 71.47% Imperious Runoff Depth=1.79" Tc=6.0 min CN=81 Runoff=2.42 cfs 0.117 of SubcatchmentB6: Runoff Area=36.075 sf 28.07% Imperious Runoff Depth=0.49" Tc=6.0 min CN=58 Runoff=0.56 cfs 0.034 of SubcatchmentB7: Runoff Area=420.400 sf 0.00% Imperious Runoff Depth=0.00" Flow Length=640' Tc=60.0 min CN=37 Runoff=0.01 cfs 0.002 of SubcatchmentOFF1: Runoff Area=21.830 sf 3.21% Imperious Runoff Depth=0.00" Flow Length=50' Slope=0.0100 '/' Tc=11.7 min CN=37 Runoff=0.00 cfs 0.000 of Pond 1 P: SMA#2- UNDERGROUND Peak EIev=490.64' Storage=1,681 cf Inflow=5.04 cfs 0.245 of Outflow=1.87 cfs 0.246 of Pond 2P: SMA#4- INFILTRATION BASIN Peak EIev=490.00' Storage=0 cf Inflow=0.01 cfs 0.004 of Discarded=0.01 cfs 0.004 of Primary=0.00 cfs 0.000 of Outflow=0.01 cfs 0.004 of Pond 3P: SMA#1 - UNDERGROUND Peak EIev=490.40' Storage=719 cf Inflow=3.09 cfs 0.176 of Outflow=1.57 cfs 0.177 of Pond 4P: SED FOREBAY Peak EIev=491.26' Storage=1,336 cf Inflow=0.56 cfs 0.034 of Outflow=0.01 cfs 0.004 of Pond 5P: SMA#3- BIORETENTION Peak EIev=496.21' Storage=3,693 cf Inflow=2.42 cfs 0.117 of Discarded=0.03 cfs 0.112 of Primary=0.00 cfs 0.000 of Outflow=0.03 cfs 0.112 of Pond 6P: CB#1 Peak EIev=494.75' Inflow=2.23 cfs 0.108 of 12.0"x 255.0' Culvert Outflow=2.23 cfs 0.108 of Pond 7P: CB#2 Peak EIev=492.84' Inflow=5.05 cfs 0.245 of Primary=1.55 cfs 0.179 of Secondary=3.55 cfs 0.066 of Outflow=5.05 cfs 0.245 of Pond 8P: DEFENDER#2 Peak EIev=492.31' Inflow=1.55 cfs 0.179 of 12.0"x 3.0' Culvert Outflow=1.55 cfs 0.179 of POSTDEVELOPMENT_BIELECKI Type // 24-hr 10-YR Rainfall=3.60" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 18 Pond 9P: STM MH#2 Peak EIev=491.90' Inflow=5.05 cfs 0.245 of Primary=5.04 cfs 0.245 of Secondary=0.01 cfs 0.000 of Outflow=5.05 cfs 0.245 of Pond 10P: CB#3 Peak EIev=495.18' Inflow=0.89 cfs 0.043 of 12.0"x 246.0' Culvert Outflow=0.89 cfs 0.043 of Pond 11P: CB#5 Peak EIev=492.73' Inflow=3.09 cfs 0.176 of Primary=1.19 cfs 0.137 of Secondary=1.92 cfs 0.039 of Outflow=3.09 cfs 0.176 of Pond 12P: DEFENDER#1 Peak EIev=492.55' Inflow=1.19 cfs 0.137 of 10.0"x 4.0' Culvert Outflow=1.19 cfs 0.137 of Pond 13P: STM MH#1 Peak EIev=491.49' Inflow=1.92 cfs 0.039 of Primary=1.92 cfs 0.039 of Secondary=0.00 cfs 0.000 of Outflow=1.92 cfs 0.039 of Link A: DESIGN POINT Inflow=0.00 cfs 0.000 of Primary=0.00 cfs 0.000 of Link B: DESIGN POINT Inflow=0.01 cfs 0.002 of Primary=0.01 cfs 0.002 of Total Runoff Area = 15.501 ac Runoff Volume = 0.574 of Average Runoff Depth = 0.44" 80.47% Pervious = 12.474 ac 19.53% Impervious = 3.027 ac POSTDEVELOPMENT_BIELECKI Type // 24-hr 10-YR Rainfall=3.60" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 19 Summary for Subcatchment 1131: Runoff = 2.85 cfs @ 11.98 hrs, Volume= 0.137 af, Depth= 1.44" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=3.60" Area (so CN Description 31,950 98 Paved parking & roofs 8,700 32 Woods/grass comb., Good, HSG A 8,985 39 >75% Grass cover, Good, HSG A 49,635 76 Weighted Average 17,685 Pervious Area 31,950 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.1 100 0.0300 1.50 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.75" 4.8 580 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps 5.9 680 Total, Increased to minimum Tc= 6.0 min Summary for Subcatchment 1132: Runoff = 2.23 cfs @ 11.97 hrs, Volume= 0.108 af, Depth= 1.94" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=3.60" Area (so CN Description 21,525 98 Paved parking & roofs 7,600 39 >75% Grass cover, Good, HSG A 29,125 83 Weighted Average 7,600 Pervious Area 21,525 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1133: Runoff = 0.89 cfs @ 11.97 hrs, Volume= 0.043 af, Depth= 1.94" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type 11 24-hr 10-YR Rainfall=3.60" POSTDEVELOPMENT_BIELECKI Type // 24-hr 10-YR Rainfall=3.60" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 ©2007 HydroCAD Software Solutions LLC Page 20 Area (so CN Description 8,600 98 Paved parking & roofs 2,975 39 >75% Grass cover, Good, HSG A 11,575 83 Weighted Average 2,975 Pervious Area 8,600 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1134: Runoff = 2.31 cfs @ 12.03 hrs, Volume= 0.133 af, Depth= 0.96" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=3.60" Area (so CN Description 34,490 98 Paved parking & roofs 23,145 43 Woods/grass comb., Fair, HSG A 14,725 39 >75% Grass cover, Good, HSG A 72,360 68 Weighted Average 37,870 Pervious Area 34,490 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.7 90 0.0500 0.22 Sheet Flow, Grass: Short n= 0.150 P2= 2.75" 3.0 370 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps 9.7 460 Total Summary for Subcatchment 1135: Runoff = 2.42 cfs @ 11.97 hrs, Volume= 0.117 af, Depth= 1.79" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=3.60" Area (so CN Description 24,445 98 Paved parking & roofs 9,760 39 >75% Grass cover, Good, HSG A 34,205 81 Weighted Average 9,760 Pervious Area 24,445 Impervious Area POSTDEVELOPMENT_BIELECKI Type // 24-hr 10-YR Rainfall=3.60" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 21 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1136: Runoff = 0.56 cfs @ 12.00 hrs, Volume= 0.034 af, Depth= 0.49" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=3.60" Area (so CN Description 10,125 98 Paved parking & roofs 15,780 39 >75% Grass cover, Good, HSG A 10,170 49 Basin, adjacenet area 36,075 58 Weighted Average 25,950 Pervious Area 10,125 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1137: Runoff = 0.01 cfs @ 24.23 hrs, Volume= 0.002 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=3.60" Area (so CN Description 227,185 43 Woods/grass comb., Fair, HSG A 193,215 30 Woods, Good, HSG A 420,400 37 Weighted Average 420,400 Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 30.6 100 0.0100 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.75" 29.4 540 0.0150 0.31 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 60.0 640 Total Summary for Subcatchment OFF1: Runoff = 0.00 cfs @ 24.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type 11 24-hr 10-YR Rainfall=3.60" POSTDEVELOPMENT_BIELECKI Type // 24-hr 10-YR Rainfall=3.60" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 ©2007 HydroCAD Software Solutions LLC Page 22 Area (so CN Description 21,130 35 Brush, Fair, HSG A 700 98 EXISTING ROAD 21,830 37 Weighted Average 21,130 Pervious Area 700 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 11.7 50 0.0100 0.07 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Summary for Pond 1 P: SMA#2 - UNDERGROUND Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 1.62" for 10-YR event Inflow = 5.04 cfs @ 11.97 hrs, Volume= 0.245 of Outflow = 1.87 cfs @ 11.90 hrs, Volume= 0.246 af, Atten= 63%, Lag= 0.0 min Discarded = 1.87 cfs @ 11.90 hrs, Volume= 0.246 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 490.64' @ 12.10 hrs Surf.Area= 5,400 sf Storage= 1,681 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 3.6 min ( 839.9 - 836.2 ) Volume Invert Avail.Storage Storage Description #1 490.50' 3,184 cf 28.9"W x 16.0"H x 7.12'L StormTech SC-310x 216 Inside#2 #2 490.00' 4,126 cf STONE (Pyramidal)Listed below (Recalc) 13,500 cf Overall - 3,184 cf Embedded = 10,316 cf x 40.0% Voids 7,311 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (cubic-feet) (cubic-feet) (sq-ft) 490.00 5,400 0 0 5,400 492.50 5,400 13,500 13,500 6,135 Device Routing Invert Outlet Devices #1 Discarded 490.00' 15.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=1.87 cfs @ 11.90 hrs HW=490.11' (Free Discharge) L1=Exfiltration (Exfiltration Controls 1.87 cfs) Summary for Pond 2P: SMA#4 - INFILTRATION BASIN Inflow Area = 1.613 ac, 49.19% Impervious, Inflow Depth = 0.03" for 10-YR event Inflow = 0.01 cfs @ 21.83 hrs, Volume= 0.004 of Outflow = 0.01 cfs @ 21.83 hrs, Volume= 0.004 af, Atten= 0%, Lag= 0.0 min Discarded = 0.01 cfs @ 21.83 hrs, Volume= 0.004 of Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of POSTDEVELOPMENT_BIELECKI Type // 24-hr 10-YR Rainfall=3.60" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 23 Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Starting Elev= 489.00' Surf.Area= 0 sf Storage= 0 cf Peak Elev= 490.00' @ 5.00 hrs Surf.Area= 4,845 sf Storage= 0 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 0.0 min ( 1,354.6 - 1,354.6 ) Volume Invert Avail.Storage Storage Description #1 490.00' 16,526 cf DETENTION BASIN (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 490.00 4,845 380.0 0 0 4,845 492.50 8,550 440.0 16,526 16,526 8,892 Device Routing Invert Outlet Devices #1 Discarded 490.00' 2.000 in/hr Exfiltration over Surface area #2 Primary 491.50' 10.0' long x 30.0' breadth OVERFLOW WEIR Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Discarded OutFlow Max=0.00 cfs @ 21.83 hrs HW=490.00' (Free Discharge) L1=Exfiltration (Passes 0.00 cfs of 0.22 cfs potential flow) Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=490.00' TW=0.00' (Dynamic Tailwater) L2=OVERFLOW WEIR ( Controls 0.00 cfs) Summary for Pond 3P: SMA#1 - UNDERGROUND Inflow Area = 1.927 ac, 51.34% Impervious, Inflow Depth = 1.10" for 10-YR event Inflow = 3.09 cfs @ 12.01 hrs, Volume= 0.176 of Outflow = 1.57 cfs @ 11.95 hrs, Volume= 0.177 af, Atten= 49%, Lag= 0.0 min Discarded = 1.57 cfs @ 11.95 hrs, Volume= 0.177 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 490.40' @ 12.13 hrs Surf.Area= 4,515 sf Storage= 719 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 1.6 min ( 863.6 - 862.0 ) Volume Invert Avail.Storage Storage Description #1 490.50' 2,654 cf 28.9"W x 16.0"H x 7.12'L StormTech SC-310x 180 Inside#2 #2 490.00' 3,454 cf STONE (Pyramidal)Listed below (Recalc) 11,288 cf Overall - 2,654 cf Embedded = 8,634 cf x 40.0% Voids 6,107 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (cubic-feet) (cubic-feet) (sq-ft) 490.00 4,515 0 0 4,515 492.50 4,515 11,288 11,288 5,187 POSTDEVELOPMENT_BIELECKI Type // 24-hr 10-YR Rainfall=3.60" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 24 Device Routing Invert Outlet Devices #1 Discarded 490.00' 15.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=1.57 cfs @ 11.95 hrs HW=490.05' (Free Discharge) L1=Exfiltration (Exfiltration Controls 1.57 cfs) Summary for Pond 4P: SED FOREBAY Inflow Area = 0.828 ac, 28.07% Impervious, Inflow Depth = 0.49" for 10-YR event Inflow = 0.56 cfs @ 12.00 hrs, Volume= 0.034 of Outflow = 0.01 cfs @ 21.83 hrs, Volume= 0.004 af, Atten= 97%, Lag= 590.1 min Primary = 0.01 cfs @ 21.83 hrs, Volume= 0.004 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 491.26' @ 21.83 hrs Surf.Area= 1,385 sf Storage= 1,336 cf Plug-Flow detention time= 647.1 min calculated for 0.004 of(10% of inflow) Center-of-Mass det. time= 450.0 min ( 1,364.3 - 914.3 ) Volume Invert Avail.Storage Storage Description #1 490.00' 3,527 cf FOREBAY (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 490.00 770 115.0 0 0 770 492.50 2,170 180.0 3,527 3,527 2,340 Device Routing Invert Outlet Devices #1 Primary 491.25' 10.0' long x 6.0' 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 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.37 2.51 2.70 2.68 2.68 2.67 2.65 2.65 2.65 2.65 2.66 2.66 2.67 2.69 2.72 2.76 2.83 Primary OutFlow Max=0.01 cfs @ 21.83 hrs HW=491.26' TW=490.00' (Dynamic Tailwater) L1=Broad-Crested Rectangular Weir(Weir Controls 0.01 cfs @ 0.20 fps) Summary for Pond 5P: SMA#3 - BIORETENTION Inflow Area = 0.785 ac, 71.47% Impervious, Inflow Depth = 1.79" for 10-YR event Inflow = 2.42 cfs @ 11.97 hrs, Volume= 0.117 of Outflow = 0.03 cfs @ 20.89 hrs, Volume= 0.112 af, Atten= 99%, Lag= 535.1 min Discarded = 0.03 cfs @ 20.89 hrs, Volume= 0.112 of Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 496.21' @ 20.89 hrs Surf.Area= 1,252 sf Storage= 3,693 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 1,251.1 min ( 2,081.7 - 830.6 ) POSTDEVELOPMENT_BIELECKI Type // 24-hr 10-YR Rainfall=3.60" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 25 Volume Invert Avail.Storage Storage Description #1 493.00' 4,841 cf BIORETENTION (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Voids Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (%) (cubic-feet) (cubic-feet) (sq-ft) 493.00 1,145 170.0 20.0 0 0 1,145 496.00 1,145 170.0 100.0 3,435 3,435 1,655 497.00 1,685 185.0 100.0 1,406 4,841 2,114 Device Routing Invert Outlet Devices #1 Device 2 496.50' 1.50' x 1.50' Horiz. CB OVERFLOW Limited to weir flow C= 0.600 #2 Primary 493.60' 12.0" x 120.0' long OUTLET CULVERT CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 493.00' S= 0.00507' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #3 Discarded 493.00' 1.000 in/hr EXFIL TO BIO over Surface area Discarded OutFlow Max=0.03 cfs @ 20.89 hrs HW=496.21' (Free Discharge) L3=EXFIL TO BIO (Exfiltration Controls 0.03 cfs) Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=493.00' TW=490.00' (Dynamic Tailwater) L2=OUTLET CULVERT ( Controls 0.00 cfs) L1=CB OVERFLOW ( Controls 0.00 cfs) Summary for Pond 6P: CB#1 Inflow Area = 0.669 ac, 73.91% Impervious, Inflow Depth = 1.94" for 10-YR event Inflow = 2.23 cfs @ 11.97 hrs, Volume= 0.108 of Outflow = 2.23 cfs @ 11.97 hrs, Volume= 0.108 af, Atten= 0%, Lag= 0.0 min Primary = 2.23 cfs @ 11.97 hrs, Volume= 0.108 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 494.75' @ 11.97 hrs Device Routing Invert Outlet Devices #1 Primary 493.70' 12.0" x 255.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.30' S= 0.00947' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=2.16 cfs @ 11.97 hrs HW=494.72' TW=492.80' (Dynamic Tailwater) t--1=Culvert (Inlet Controls 2.16 cfs @ 2.75 fps) Summary for Pond 7P: CB#2 Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 1.62" for 10-YR event Inflow = 5.05 cfs @ 11.97 hrs, Volume= 0.245 of Outflow = 5.05 cfs @ 11.97 hrs, Volume= 0.245 af, Atten= 0%, Lag= 0.0 min Primary = 1.55 cfs @ 11.96 hrs, Volume= 0.179 of Secondary = 3.55 cfs @ 11.98 hrs, Volume= 0.066 of POSTDEVELOPMENT_BIELECKI Type // 24-hr 10-YR Rainfall=3.60" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 26 Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 492.84' @ 11.98 hrs Device Routing Invert Outlet Devices #1 Secondary 491.80' 18.0" x 9.0' long TO UNDERGROUND CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.50' S= 0.03337' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 491.30' 10.0" x 7.0' long TO DEFENDER CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 490.70' S= 0.08577' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=1.46 cfs @ 11.96 hrs HW=492.80' TW=492.30' (Dynamic Tailwater) L2=TO DEFENDER (Inlet Controls 1.46 cfs @ 2.68 fps) Secondary OutFlow Max=3.38 cfs @ 11.98 hrs HW=492.80' TW=491.88' (Dynamic Tailwater) L1=TO UNDERGROUND (Inlet Controls 3.38 cfs @ 2.69 fps) Summary for Pond 8P: DEFENDER #2 Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 1.19" for 10-YR event Inflow = 1.55 cfs @ 11.96 hrs, Volume= 0.179 of Outflow = 1.55 cfs @ 11.96 hrs, Volume= 0.179 af, Atten= 0%, Lag= 0.0 min Primary = 1.55 cfs @ 11.96 hrs, Volume= 0.179 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 492.31' @ 11.96 hrs Device Routing Invert Outlet Devices #1 Primary 491.40' 12.0" x 3.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.40' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=1.53 cfs @ 11.96 hrs HW=492.30' TW=491.88' (Dynamic Tailwater) L1=Culvert (Barrel Controls 1.53 cfs @ 2.71 fps) Summary for Pond 9P: STM MH#2 Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 1.62" for 10-YR event Inflow = 5.05 cfs @ 11.97 hrs, Volume= 0.245 of Outflow = 5.05 cfs @ 11.97 hrs, Volume= 0.245 af, Atten= 0%, Lag= 0.0 min Primary = 5.04 cfs @ 11.97 hrs, Volume= 0.245 of Secondary = 0.01 cfs @ 11.97 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 491.90' @ 11.97 hrs POSTDEVELOPMENT_BIELECKI Type // 24-hr 10-YR Rainfall=3.60" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 27 Device Routing Invert Outlet Devices #1 Primary 490.83' 12.0" x 35.0' long TO UNDEGROUND CPP, square edge headwall, Ke= 0.500 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 490.83' 18.0" x 3.0' long TO ISOLATOR ROW CPP, square edge headwall, Ke= 0.500 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #3 Secondary 491.83' 12.0" x 185.0' long OVERFLOW CPP, square edge headwall, Ke= 0.500 Outlet Invert= 490.80' S= 0.00567' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=4.87 cfs @ 11.97 hrs HW=491.88' TW=490.42' (Dynamic Tailwater) 1=TO UNDEGROUND (Barrel Controls 1.78 cfs @ 2.68 fps) t2=TO ISOLATOR ROW (Barrel Controls 3.10 cfs @ 3.30 fps) Secondary OutFlow Max=0.01 cfs @ 11.97 hrs HW=491.88' TW=490.00' (Dynamic Tailwater) L3=OVERFLOW (Barrel Controls 0.01 cfs @ 0.71 fps) Summary for Pond 10P: C113#3 Inflow Area = 0.266 ac, 74.30% Impervious, Inflow Depth = 1.94" for 10-YR event Inflow = 0.89 cfs @ 11.97 hrs, Volume= 0.043 of Outflow = 0.89 cfs @ 11.97 hrs, Volume= 0.043 af, Atten= 0%, Lag= 0.0 min Primary = 0.89 cfs @ 11.97 hrs, Volume= 0.043 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 495.18' @ 11.97 hrs Device Routing Invert Outlet Devices #1 Primary 494.70' 12.0" x 246.0' long Culvert CPP, square edge headwall, Ke= 0.500 Outlet Invert= 491.70' S= 0.0122 T Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.86 cfs @ 11.97 hrs HW=495.17' TW=492.67' (Dynamic Tailwater) t--1=Culvert (Inlet Controls 0.86 cfs @ 2.34 fps) Summary for Pond 11 P: C113#5 Inflow Area = 1.927 ac, 51.34% Impervious, Inflow Depth = 1.10" for 10-YR event Inflow = 3.09 cfs @ 12.01 hrs, Volume= 0.176 of Outflow = 3.09 cfs @ 12.01 hrs, Volume= 0.176 af, Atten= 0%, Lag= 0.0 min Primary = 1.19 cfs @ 11.99 hrs, Volume= 0.137 of Secondary = 1.92 cfs @ 12.01 hrs, Volume= 0.039 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 492.73' @ 12.01 hrs POSTDEVELOPMENT_BIELECKI Type // 24-hr 10-YR Rainfall=3.60" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 28 Device Routing Invert Outlet Devices #1 Secondary 492.10' 18.0" x 10.0' long TO UNDERGROUND CPP, square edge headwall, Ke= 0.500 Outlet Invert= 491.50' S= 0.06007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 491.70' 10.0" x 6.0' long TO DEFENDER CPP, square edge headwall, Ke= 0.500 Outlet Invert= 491.20' S= 0.08337' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=1.05 cfs @ 11.99 hrs HW=492.70' TW=492.54' (Dynamic Tailwater) L2=TO DEFENDER (Inlet Controls 1.05 cfs @ 1.93 fps) Secondary OutFlow Max=1.85 cfs @ 12.01 hrs HW=492.72' TW=491.48' (Dynamic Tailwater) L1=TO UNDERGROUND (Inlet Controls 1.85 cfs @ 2.68 fps) Summary for Pond 12P: DEFENDER #1 Inflow Area = 1.927 ac, 51.34% Impervious, Inflow Depth = 0.85" for 10-YR event Inflow = 1.19 cfs @ 11.99 hrs, Volume= 0.137 of Outflow = 1.19 cfs @ 11.99 hrs, Volume= 0.137 af, Atten= 0%, Lag= 0.0 min Primary = 1.19 cfs @ 11.99 hrs, Volume= 0.137 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 492.55' @ 11.99 hrs Device Routing Invert Outlet Devices #1 Primary 491.80' 10.0" x 4.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.70' S= 0.02507' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=1.17 cfs @ 11.99 hrs HW=492.54' TW=490.15' (Dynamic Tailwater) t--1=Culvert (Barrel Controls 1.17 cfs @ 3.01 fps) Summary for Pond 13P: STM MH#1 Inflow = 1.92 cfs @ 12.01 hrs, Volume= 0.039 of Outflow = 1.92 cfs @ 12.01 hrs, Volume= 0.039 af, Atten= 0%, Lag= 0.0 min Primary = 1.92 cfs @ 12.01 hrs, Volume= 0.039 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 491.49' @ 12.01 hrs Device Routing Invert Outlet Devices #1 Primary 490.83' 12.0" x 35.0' long TO UNDERGROUND CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 490.83' 18.0" x 2.0' long TO ISOLATOR ROW CPP, projecting, no headwall, Ke= 0.900 POSTDEVELOPMENT_BIELECKI Type // 24-hr 10-YR Rainfall=3.60" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 29 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #3 Secondary 491.83' 12.0" x 163.0' long OVERFLOW CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 490.80' S= 0.00637' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=1.85 cfs @ 12.01 hrs HW=491.48' TW=490.21' (Dynamic Tailwater) �11=TO UNDERGROUND (Barrel Controls 0.70 cfs @ 1.86 fps) 2=TO ISOLATOR ROW (Barrel Controls 1.15 cfs @ 2.31 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=490.83' TW=490.00' (Dynamic Tailwater) L3=OVERFLOW ( Controls 0.00 cfs) Summary for Link A: DESIGN POINT Inflow Area = 0.501 ac, 3.21% Impervious, Inflow Depth = 0.00" for 10-YR event Inflow = 0.00 cfs @ 24.00 hrs, Volume= 0.000 of Primary = 0.00 cfs @ 24.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Summary for Link B: DESIGN POINT Inflow Area = 11.264 ac, 7.05% Impervious, Inflow Depth = 0.00" for 10-YR event Inflow = 0.01 cfs @ 24.23 hrs, Volume= 0.002 of Primary = 0.01 cfs @ 24.23 hrs, Volume= 0.002 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs POSTDEVELOPMENT_BIELECKI Type // 24-hr 100 YR Rainfall=6.00" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 30 Time span=5.00-60.00 hrs, dt=0.05 hrs, 1101 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method SubcatchmentB1: Runoff Area=49.635 sf 64.37% Imperious Runoff Depth=3.38" Flow Length=680' Tc=6.0 min CN=76 Runoff=6.58 cfs 0.321 of SubcatchmentB2: Runoff Area=29,125sf 73.91% Impervious RunoffDepth=4.09" Tc=6.0 min CN=83 Runoff=4.56 cfs 0.228 of SubcatchmentB3: Runoff Area=11,575 sf 74.30% Imperious Runoff Depth=4.09" Tc=6.0 min CN=83 Runoff=1.81 cfs 0.091 of SubcatchmentB4: Runoff Area=72.360 sf 47.66% Imperious Runoff Depth=2.62" Flow Length=460' Tc=9.7 min CN=68 Runoff=6.66 cfs 0.363 of SubcatchmentB5: Runoff Area=34.205 sf 71.47% Imperious Runoff Depth=3.88" Tc=6.0 min CN=81 Runoff=5.13 cfs 0.254 of SubcatchmentB6: Runoff Area=36.075 sf 28.07% Imperious Runoff Depth=1.76" Tc=6.0 min CN=58 Runoff=2.48 cfs 0.121 of SubcatchmentB7: Runoff Area=420.400 sf 0.00% Imperious Runoff Depth=0.34" Flow Length=640' Tc=60.0 min CN=37 Runoff=0.59 cfs 0.276 of SubcatchmentOFF1: Runoff Area=21.830 sf 3.21% Imperious Runoff Depth=0.34" Flow Length=50' Slope=0.0100 '/' Tc=11.7 min CN=37 Runoff=0.06 cfs 0.014 of Pond 1 P: SMA#2- UNDERGROUND Peak EIev=492.06' Storage=6,363 cf Inflow=9.84 cfs 0.533 of Outflow=1.87 cfs 0.534 of Pond 2P: SMA#4- INFILTRATION BASIN Peak EIev=490.81' Storage=4,335 cf Inflow=5.56 cfs 0.230 of Discarded=0.27 cfs 0.230 of Primary=0.00 cfs 0.000 of Outflow=0.27 cfs 0.230 of Pond 3P: SMA#1 - UNDERGROUND Peak EIev=492.05' Storage=5,301 cf Inflow=7.98 cfs 0.448 of Outflow=1.57 cfs 0.449 of Pond 4P: SED FOREBAY Peak EIev=491.42' Storage=1,575 cf Inflow=2.48 cfs 0.121 of Outflow=1.64 cfs 0.091 of Pond 5P: SMA#3- BIORETENTION Peak EIev=496.83' Storage=4,562 cf Inflow=5.13 cfs 0.254 of Discarded=0.04 cfs 0.123 of Primary=3.67 cfs 0.118 of Outflow=3.71 cfs 0.241 of Pond 6P: CB#1 Peak EIev=498.95' Inflow=4.56 cfs 0.228 of 12.0"x 255.0' Culvert Outflow=4.56 cfs 0.228 of Pond 7P: CB#2 Peak EIev=494.21' Inflow=11.14 cfs 0.549 of Primary=2.60 cfs 0.338 of Secondary=8.71 cfs 0.211 of Outflow=11.14 cfs 0.549 of Pond 8P: DEFENDER#2 Peak EIev=493.08' Inflow=2.60 cfs 0.338 of 12.0"x 3.0' Culvert Outflow=2.60 cfs 0.338 of POSTDEVELOPMENT_BIELECKI Type // 24-hr 100 YR Rainfall=6.00" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 31 Pond 9P: STM MH#2 Peak Elev=492.51' Inflow=11.14 cfs 0.549 of Primary=9.84 cfs 0.533 of Secondary=1.30 cfs 0.016 of Outflow=11.14 cfs 0.549 of Pond 10P: CB#3 Peak Elev=495.44' Inflow=1.81 cfs 0.091 of 12.0"x 246.0' Culvert Outflow=1.81 cfs 0.091 of Pond 11P: CB#5 Peak Elev=493.43' Inflow=8.29 cfs 0.453 of Primary=1.84 cfs 0.285 of Secondary=6.49 cfs 0.169 of Outflow=8.29 cfs 0.453 of Pond 12P: DEFENDER#1 Peak EIev=493.00' Inflow=1.84 cfs 0.285 of 10.0"x 4.0' Culvert Outflow=1.84 cfs 0.285 of Pond 13P: STM MH#1 Peak EIev=492.14' Inflow=6.49 cfs 0.169 of Primary=6.18 cfs 0.164 of Secondary=0.31 cfs 0.005 of Outflow=6.49 cfs 0.169 of Link A: DESIGN POINT Inflow=0.06 cfs 0.014 of Primary=0.06 cfs 0.014 of Link B: DESIGN POINT Inflow=0.59 cfs 0.276 of Primary=0.59 cfs 0.276 of Total Runoff Area = 15.501 ac Runoff Volume = 1.668 of Average Runoff Depth = 1.29" 80.47% Pervious = 12.474 ac 19.53% Impervious = 3.027 ac POSTDEVELOPMENT_BIELECKI Type // 24-hr 100 YR Rainfall=6.00" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 32 Summary for Subcatchment 1131: Runoff = 6.58 cfs @ 11.97 hrs, Volume= 0.321 af, Depth= 3.38" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 100 YR Rainfall=6.00" Area (so CN Description 31,950 98 Paved parking & roofs 8,700 32 Woods/grass comb., Good, HSG A 8,985 39 >75% Grass cover, Good, HSG A 49,635 76 Weighted Average 17,685 Pervious Area 31,950 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.1 100 0.0300 1.50 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.75" 4.8 580 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps 5.9 680 Total, Increased to minimum Tc= 6.0 min Summary for Subcatchment 1132: Runoff = 4.56 cfs @ 11.97 hrs, Volume= 0.228 af, Depth= 4.09" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 100 YR Rainfall=6.00" Area (so CN Description 21,525 98 Paved parking & roofs 7,600 39 >75% Grass cover, Good, HSG A 29,125 83 Weighted Average 7,600 Pervious Area 21,525 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1133: Runoff = 1.81 cfs @ 11.97 hrs, Volume= 0.091 af, Depth= 4.09" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type 11 24-hr 100 YR Rainfall=6.00" POSTDEVELOPMENT_BIELECKI Type // 24-hr 100 YR Rainfall=6.00" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 ©2007 HydroCAD Software Solutions LLC Page 33 Area (so CN Description 8,600 98 Paved parking & roofs 2,975 39 >75% Grass cover, Good, HSG A 11,575 83 Weighted Average 2,975 Pervious Area 8,600 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1134: Runoff = 6.66 cfs @ 12.02 hrs, Volume= 0.363 af, Depth= 2.62" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 100 YR Rainfall=6.00" Area (so CN Description 34,490 98 Paved parking & roofs 23,145 43 Woods/grass comb., Fair, HSG A 14,725 39 >75% Grass cover, Good, HSG A 72,360 68 Weighted Average 37,870 Pervious Area 34,490 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.7 90 0.0500 0.22 Sheet Flow, Grass: Short n= 0.150 P2= 2.75" 3.0 370 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps 9.7 460 Total Summary for Subcatchment 1135: Runoff = 5.13 cfs @ 11.97 hrs, Volume= 0.254 af, Depth= 3.88" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 100 YR Rainfall=6.00" Area (so CN Description 24,445 98 Paved parking & roofs 9,760 39 >75% Grass cover, Good, HSG A 34,205 81 Weighted Average 9,760 Pervious Area 24,445 Impervious Area POSTDEVELOPMENT_BIELECKI Type // 24-hr 100 YR Rainfall=6.00" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 34 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1136: Runoff = 2.48 cfs @ 11.98 hrs, Volume= 0.121 af, Depth= 1.76" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 100 YR Rainfall=6.00" Area (so CN Description 10,125 98 Paved parking & roofs 15,780 39 >75% Grass cover, Good, HSG A 10,170 49 Basin, adjacenet area 36,075 58 Weighted Average 25,950 Pervious Area 10,125 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1137: Runoff = 0.59 cfs @ 13.05 hrs, Volume= 0.276 af, Depth= 0.34" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 100 YR Rainfall=6.00" Area (so CN Description 227,185 43 Woods/grass comb., Fair, HSG A 193,215 30 Woods, Good, HSG A 420,400 37 Weighted Average 420,400 Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 30.6 100 0.0100 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.75" 29.4 540 0.0150 0.31 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 60.0 640 Total Summary for Subcatchment OFF1: Runoff = 0.06 cfs @ 12.13 hrs, Volume= 0.014 af, Depth= 0.34" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type 11 24-hr 100 YR Rainfall=6.00" POSTDEVELOPMENT_BIELECKI Type // 24-hr 100 YR Rainfall=6.00" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 ©2007 HydroCAD Software Solutions LLC Page 35 Area (so CN Description 21,130 35 Brush, Fair, HSG A 700 98 EXISTING ROAD 21,830 37 Weighted Average 21,130 Pervious Area 700 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 11.7 50 0.0100 0.07 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Summary for Pond 1 P: SMA#2 - UNDERGROUND Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 3.53" for 100 YR event Inflow = 9.84 cfs @ 11.97 hrs, Volume= 0.533 of Outflow = 1.87 cfs @ 11.75 hrs, Volume= 0.534 af, Atten= 81%, Lag= 0.0 min Discarded = 1.87 cfs @ 11.75 hrs, Volume= 0.534 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 492.06' @ 12.17 hrs Surf.Area= 5,400 sf Storage= 6,363 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 18.7 min ( 835.1 - 816.4 ) Volume Invert Avail.Storage Storage Description #1 490.50' 3,184 cf 28.9"W x 16.0"H x 7.12'L StormTech SC-310x 216 Inside#2 #2 490.00' 4,126 cf STONE (Pyramidal)Listed below (Recalc) 13,500 cf Overall - 3,184 cf Embedded = 10,316 cf x 40.0% Voids 7,311 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (cubic-feet) (cubic-feet) (sq-ft) 490.00 5,400 0 0 5,400 492.50 5,400 13,500 13,500 6,135 Device Routing Invert Outlet Devices #1 Discarded 490.00' 15.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=1.87 cfs @ 11.75 hrs HW=490.09' (Free Discharge) L1=Exfiltration (Exfiltration Controls 1.87 cfs) Summary for Pond 2P: SMA#4 - INFILTRATION BASIN Inflow Area = 1.613 ac, 49.19% Impervious, Inflow Depth = 1.71" for 100 YR event Inflow = 5.56 cfs @ 12.06 hrs, Volume= 0.230 of Outflow = 0.27 cfs @ 13.77 hrs, Volume= 0.230 af, Atten= 95%, Lag= 102.6 min Discarded = 0.27 cfs @ 13.77 hrs, Volume= 0.230 of Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of POSTDEVELOPMENT_BIELECKI Type // 24-hr 100 YR Rainfall=6.00" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 36 Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Starting Elev= 489.00' Surf.Area= 0 sf Storage= 0 cf Peak Elev= 490.81' @ 13.77 hrs Surf.Area= 5,926 sf Storage= 4,335 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 168.4 min ( 1,031.0 - 862.6 ) Volume Invert Avail.Storage Storage Description #1 490.00' 16,526 cf DETENTION BASIN (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 490.00 4,845 380.0 0 0 4,845 492.50 8,550 440.0 16,526 16,526 8,892 Device Routing Invert Outlet Devices #1 Discarded 490.00' 2.000 in/hr Exfiltration over Surface area #2 Primary 491.50' 10.0' long x 30.0' breadth OVERFLOW WEIR Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Discarded OutFlow Max=0.27 cfs @ 13.77 hrs HW=490.81' (Free Discharge) L1=Exfiltration (Exfiltration Controls 0.27 cfs) Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=490.00' TW=0.00' (Dynamic Tailwater) L2=OVERFLOW WEIR ( Controls 0.00 cfs) Summary for Pond 3P: SMA#1 - UNDERGROUND Inflow Area = 1.927 ac, 51.34% Impervious, Inflow Depth = 2.79" for 100 YR event Inflow = 7.98 cfs @ 12.00 hrs, Volume= 0.448 of Outflow = 1.57 cfs @ 11.80 hrs, Volume= 0.449 af, Atten= 80%, Lag= 0.0 min Discarded = 1.57 cfs @ 11.80 hrs, Volume= 0.449 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 492.05' @ 12.26 hrs Surf.Area= 4,515 sf Storage= 5,301 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 19.4 min ( 855.7 - 836.3 ) Volume Invert Avail.Storage Storage Description #1 490.50' 2,654 cf 28.9"W x 16.0"H x 7.12'L StormTech SC-310x 180 Inside#2 #2 490.00' 3,454 cf STONE (Pyramidal)Listed below (Recalc) 11,288 cf Overall - 2,654 cf Embedded = 8,634 cf x 40.0% Voids 6,107 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (cubic-feet) (cubic-feet) (sq-ft) 490.00 4,515 0 0 4,515 492.50 4,515 11,288 11,288 5,187 POSTDEVELOPMENT_BIELECKI Type // 24-hr 100 YR Rainfall=6.00" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 37 Device Routing Invert Outlet Devices #1 Discarded 490.00' 15.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=1.57 cfs @ 11.80 hrs HW=490.06' (Free Discharge) L1=Exfiltration (Exfiltration Controls 1.57 cfs) Summary for Pond 4P: SED FOREBAY Inflow Area = 0.828 ac, 28.07% Impervious, Inflow Depth = 1.76" for 100 YR event Inflow = 2.48 cfs @ 11.98 hrs, Volume= 0.121 of Outflow = 1.64 cfs @ 12.07 hrs, Volume= 0.091 af, Atten= 34%, Lag= 5.1 min Primary = 1.64 cfs @ 12.07 hrs, Volume= 0.091 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 491.42' @ 12.07 hrs Surf.Area= 1,481 sf Storage= 1,575 cf Plug-Flow detention time= 159.8 min calculated for 0.091 of(75% of inflow) Center-of-Mass det. time= 56.6 min ( 921.6 - 865.0 ) Volume Invert Avail.Storage Storage Description #1 490.00' 3,527 cf FOREBAY (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 490.00 770 115.0 0 0 770 492.50 2,170 180.0 3,527 3,527 2,340 Device Routing Invert Outlet Devices #1 Primary 491.25' 10.0' long x 6.0' 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 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.37 2.51 2.70 2.68 2.68 2.67 2.65 2.65 2.65 2.65 2.66 2.66 2.67 2.69 2.72 2.76 2.83 Primary OutFlow Max=1.43 cfs @ 12.07 hrs HW=491.40' TW=490.27' (Dynamic Tailwater) L1=Broad-Crested Rectangular Weir(Weir Controls 1.43 cfs @ 0.93 fps) Summary for Pond 5P: SMA#3 - BIORETENTION Inflow Area = 0.785 ac, 71.47% Impervious, Inflow Depth = 3.88" for 100 YR event Inflow = 5.13 cfs @ 11.97 hrs, Volume= 0.254 of Outflow = 3.71 cfs @ 12.06 hrs, Volume= 0.241 af, Atten= 28%, Lag= 5.5 min Discarded = 0.04 cfs @ 12.06 hrs, Volume= 0.123 of Primary = 3.67 cfs @ 12.06 hrs, Volume= 0.118 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 496.83' @ 12.06 hrs Surf.Area= 1,585 sf Storage= 4,562 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 609.9 min ( 1,418.3 - 808.5 ) POSTDEVELOPMENT_BIELECKI Type // 24-hr 100 YR Rainfall=6.00" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 38 Volume Invert Avail.Storage Storage Description #1 493.00' 4,841 cf BIORETENTION (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Voids Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (%) (cubic-feet) (cubic-feet) (sq-ft) 493.00 1,145 170.0 20.0 0 0 1,145 496.00 1,145 170.0 100.0 3,435 3,435 1,655 497.00 1,685 185.0 100.0 1,406 4,841 2,114 Device Routing Invert Outlet Devices #1 Device 2 496.50' 1.50' x 1.50' Horiz. CB OVERFLOW Limited to weir flow C= 0.600 #2 Primary 493.60' 12.0" x 120.0' long OUTLET CULVERT CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 493.00' S= 0.00507' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #3 Discarded 493.00' 1.000 in/hr EXFIL TO BIO over Surface area Discarded OutFlow Max=0.04 cfs @ 12.06 hrs HW=496.81' (Free Discharge) L3=EXFIL TO BIO (Exfiltration Controls 0.04 cfs) Primary OutFlow Max=3.36 cfs @ 12.06 hrs HW=496.81' TW=490.25' (Dynamic Tailwater) L2=OUTLET CULVERT (Passes 3.36 cfs of 4.44 cfs potential flow) L1=CB OVERFLOW (Weir Controls 3.36 cfs @ 1.82 fps) Summary for Pond 6P: CB#1 Inflow Area = 0.669 ac, 73.91% Impervious, Inflow Depth = 4.09" for 100 YR event Inflow = 4.56 cfs @ 11.97 hrs, Volume= 0.228 of Outflow = 4.56 cfs @ 11.97 hrs, Volume= 0.228 af, Atten= 0%, Lag= 0.0 min Primary = 4.56 cfs @ 11.97 hrs, Volume= 0.228 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 498.95' @ 11.98 hrs Device Routing Invert Outlet Devices #1 Primary 493.70' 12.0" x 255.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.30' S= 0.00947' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=4.21 cfs @ 11.97 hrs HW=498.52' TW=494.10' (Dynamic Tailwater) t--1=Culvert (Outlet Controls 4.21 cfs @ 5.36 fps) Summary for Pond 7P: CB#2 Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 3.64" for 100 YR event Inflow = 11.14 cfs @ 11.97 hrs, Volume= 0.549 of Outflow = 11.14 cfs @ 11.97 hrs, Volume= 0.549 af, Atten= 0%, Lag= 0.0 min Primary = 2.60 cfs @ 11.95 hrs, Volume= 0.338 of Secondary = 8.71 cfs @ 11.98 hrs, Volume= 0.211 of POSTDEVELOPMENT_BIELECKI Type // 24-hr 100 YR Rainfall=6.00" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 39 Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 494.21' @ 11.98 hrs Device Routing Invert Outlet Devices #1 Secondary 491.80' 18.0" x 9.0' long TO UNDERGROUND CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.50' S= 0.03337' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 491.30' 10.0" x 7.0' long TO DEFENDER CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 490.70' S= 0.08577' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=2.15 cfs @ 11.95 hrs HW=494.09' TW=493.02' (Dynamic Tailwater) L2=TO DEFENDER (Inlet Controls 2.15 cfs @ 3.94 fps) Secondary OutFlow Max=8.37 cfs @ 11.98 hrs HW=494.10' TW=492.47' (Dynamic Tailwater) L1=TO UNDERGROUND (Inlet Controls 8.37 cfs @ 4.73 fps) Summary for Pond 8P: DEFENDER #2 Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 2.24" for 100 YR event Inflow = 2.60 cfs @ 11.95 hrs, Volume= 0.338 of Outflow = 2.60 cfs @ 11.95 hrs, Volume= 0.338 af, Atten= 0%, Lag= 0.0 min Primary = 2.60 cfs @ 11.95 hrs, Volume= 0.338 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 493.08' @ 11.97 hrs Device Routing Invert Outlet Devices #1 Primary 491.40' 12.0" x 3.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.40' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=2.17 cfs @ 11.95 hrs HW=493.02' TW=492.49' (Dynamic Tailwater) t--1=Culvert (Inlet Controls 2.17 cfs @ 2.77 fps) Summary for Pond 9P: STM MH#2 Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 3.64" for 100 YR event Inflow = 11.14 cfs @ 11.97 hrs, Volume= 0.549 of Outflow = 11.14 cfs @ 11.97 hrs, Volume= 0.549 af, Atten= 0%, Lag= 0.0 min Primary = 9.84 cfs @ 11.97 hrs, Volume= 0.533 of Secondary = 1.30 cfs @ 11.97 hrs, Volume= 0.016 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 492.51' @ 11.97 hrs POSTDEVELOPMENT_BIELECKI Type // 24-hr 100 YR Rainfall=6.00" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 40 Device Routing Invert Outlet Devices #1 Primary 490.83' 12.0" x 35.0' long TO UNDEGROUND CPP, square edge headwall, Ke= 0.500 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 490.83' 18.0" x 3.0' long TO ISOLATOR ROW CPP, square edge headwall, Ke= 0.500 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #3 Secondary 491.83' 12.0" x 185.0' long OVERFLOW CPP, square edge headwall, Ke= 0.500 Outlet Invert= 490.80' S= 0.00567' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=9.59 cfs @ 11.97 hrs HW=492.48' TW=491.13' (Dynamic Tailwater) 1=TO UNDEGROUND (Barrel Controls 3.14 cfs @ 4.00 fps) t2=TO ISOLATOR ROW (Barrel Controls 6.45 cfs @ 4.14 fps) Secondary OutFlow Max=1.21 cfs @ 11.97 hrs HW=492.48' TW=490.05' (Dynamic Tailwater) L3=OVERFLOW (Barrel Controls 1.21 cfs @ 3.21 fps) Summary for Pond 10P: C113#3 Inflow Area = 0.266 ac, 74.30% Impervious, Inflow Depth = 4.09" for 100 YR event Inflow = 1.81 cfs @ 11.97 hrs, Volume= 0.091 of Outflow = 1.81 cfs @ 11.97 hrs, Volume= 0.091 af, Atten= 0%, Lag= 0.0 min Primary = 1.81 cfs @ 11.97 hrs, Volume= 0.091 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 495.44' @ 11.97 hrs Device Routing Invert Outlet Devices #1 Primary 494.70' 12.0" x 246.0' long Culvert CPP, square edge headwall, Ke= 0.500 Outlet Invert= 491.70' S= 0.0122 T Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=1.73 cfs @ 11.97 hrs HW=495.42' TW=493.30' (Dynamic Tailwater) t--1=Culvert (Outlet Controls 1.73 cfs @ 3.96 fps) Summary for Pond 11 P: C113#5 Inflow Area = 1.927 ac, 51.34% Impervious, Inflow Depth = 2.82" for 100 YR event Inflow = 8.29 cfs @ 12.00 hrs, Volume= 0.453 of Outflow = 8.29 cfs @ 12.00 hrs, Volume= 0.453 af, Atten= 0%, Lag= 0.0 min Primary = 1.84 cfs @ 11.98 hrs, Volume= 0.285 of Secondary = 6.49 cfs @ 12.01 hrs, Volume= 0.169 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 493.43' @ 12.01 hrs POSTDEVELOPMENT_BIELECKI Type // 24-hr 100 YR Rainfall=6.00" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 41 Device Routing Invert Outlet Devices #1 Secondary 492.10' 18.0" x 10.0' long TO UNDERGROUND CPP, square edge headwall, Ke= 0.500 Outlet Invert= 491.50' S= 0.06007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 491.70' 10.0" x 6.0' long TO DEFENDER CPP, square edge headwall, Ke= 0.500 Outlet Invert= 491.20' S= 0.08337' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=1.64 cfs @ 11.98 hrs HW=493.36' TW=492.97' (Dynamic Tailwater) L2=TO DEFENDER (Inlet Controls 1.64 cfs @ 3.00 fps) Secondary OutFlow Max=6.38 cfs @ 12.01 hrs HW=493.41' TW=492.13' (Dynamic Tailwater) L1=TO UNDERGROUND (Inlet Controls 6.38 cfs @ 3.90 fps) Summary for Pond 12P: DEFENDER #1 Inflow Area = 1.927 ac, 51.34% Impervious, Inflow Depth = 1.77" for 100 YR event Inflow = 1.84 cfs @ 11.98 hrs, Volume= 0.285 of Outflow = 1.84 cfs @ 11.98 hrs, Volume= 0.285 af, Atten= 0%, Lag= 0.0 min Primary = 1.84 cfs @ 11.98 hrs, Volume= 0.285 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 493.00' @ 11.98 hrs Device Routing Invert Outlet Devices #1 Primary 491.80' 10.0" x 4.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.70' S= 0.02507' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=1.80 cfs @ 11.98 hrs HW=492.97' TW=490.89' (Dynamic Tailwater) t--1=Culvert (Inlet Controls 1.80 cfs @ 3.30 fps) Summary for Pond 13P: STM MH#1 Inflow = 6.49 cfs @ 12.01 hrs, Volume= 0.169 of Outflow = 6.49 cfs @ 12.01 hrs, Volume= 0.169 af, Atten= 0%, Lag= 0.0 min Primary = 6.18 cfs @ 12.01 hrs, Volume= 0.164 of Secondary = 0.31 cfs @ 12.01 hrs, Volume= 0.005 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 492.14' @ 12.01 hrs Device Routing Invert Outlet Devices #1 Primary 490.83' 12.0" x 35.0' long TO UNDERGROUND CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 490.83' 18.0" x 2.0' long TO ISOLATOR ROW CPP, projecting, no headwall, Ke= 0.900 POSTDEVELOPMENT_BIELECKI Type // 24-hr 100 YR Rainfall=6.00" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 42 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #3 Secondary 491.83' 12.0" x 163.0' long OVERFLOW CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 490.80' S= 0.00637' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=6.09 cfs @ 12.01 hrs HW=492.13' TW=491.05' (Dynamic Tailwater) �11=TO UNDERGROUND (Barrel Controls 2.11 cfs @ 2.70 fps) 2=TO ISOLATOR ROW (Barrel Controls 3.98 cfs @ 3.29 fps) Secondary OutFlow Max=0.29 cfs @ 12.01 hrs HW=492.13' TW=490.11' (Dynamic Tailwater) L3=OVERFLOW (Inlet Controls 0.29 cfs @ 1.47 fps) Summary for Link A: DESIGN POINT Inflow Area = 0.501 ac, 3.21% Impervious, Inflow Depth = 0.34" for 100 YR event Inflow = 0.06 cfs @ 12.13 hrs, Volume= 0.014 of Primary = 0.06 cfs @ 12.13 hrs, Volume= 0.014 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Summary for Link B: DESIGN POINT Inflow Area = 11.264 ac, 7.05% Impervious, Inflow Depth = 0.29" for 100 YR event Inflow = 0.59 cfs @ 13.05 hrs, Volume= 0.276 of Primary = 0.59 cfs @ 13.05 hrs, Volume= 0.276 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs POSTDEVELOPMENT_BIELECKI Type // 24-hr WQv Rainfall=1.20" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 43 Time span=5.00-60.00 hrs, dt=0.05 hrs, 1101 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method SubcatchmentB1: Runoff Area=49.635 sf 64.37% Imperious Runoff Depth=0.09" Flow Length=680' Tc=6.0 min CN=76 Runoff=0.07 cfs 0.008 of SubcatchmentB2: Runoff Area=29,125sf 73.91% Impervious RunoffDepth=0.22" Tc=6.0 min CN=83 Runoff=0.23 cfs 0.012 of SubcatchmentB3: Runoff Area=11,575 sf 74.30% Imperious Runoff Depth=0.22" Tc=6.0 min CN=83 Runoff=0.09 cfs 0.005 of SubcatchmentB4: Runoff Area=72.360 sf 47.66% Imperious Runoff Depth=0.01" Flow Length=460' Tc=9.7 min CN=68 Runoff=0.00 cfs 0.002 of SubcatchmentB5: Runoff Area=34.205 sf 71.47% Imperious Runoff Depth=0.17" Tc=6.0 min CN=81 Runoff=0.19 cfs 0.011 of SubcatchmentB6: Runoff Area=36.075 sf 28.07% Imperious Runoff Depth=0.00" Tc=6.0 min CN=58 Runoff=0.00 cfs 0.000 of SubcatchmentB7: Runoff Area=420.400 sf 0.00% Imperious Runoff Depth=0.00" Flow Length=640' Tc=60.0 min CN=37 Runoff=0.00 cfs 0.000 of SubcatchmentOFF1: Runoff Area=21.830 sf 3.21% Imperious Runoff Depth=0.00" Flow Length=50' Slope=0.0100 '/' Tc=11.7 min CN=37 Runoff=0.00 cfs 0.000 of Pond 1 P: SMA#2- UNDERGROUND Peak EIev=490.00' Storage=0 cf Inflow=0.29 cfs 0.020 of Outflow=0.29 cfs 0.020 of Pond 2P: SMA#4- INFILTRATION BASIN Peak EIev=490.00' Storage=0 cf Inflow=0.00 cfs 0.000 of Discarded=0.00 cfs 0.000 of Primary=0.00 cfs 0.000 of Outflow=0.00 cfs 0.000 of Pond 3P: SMA#1 - UNDERGROUND Peak EIev=490.00' Storage=0 cf Inflow=0.09 cfs 0.007 of Outflow=0.09 cfs 0.007 of Pond 4P: SED FOREBAY Peak EIev=490.00' Storage=0 cf Inflow=0.00 cfs 0.000 of Outflow=0.00 cfs 0.000 of Pond 5P: SMA#3- BIORETENTION Peak EIev=493.09' Storage=105 cf Inflow=0.19 cfs 0.011 of Discarded=0.03 cfs 0.011 of Primary=0.00 cfs 0.000 of Outflow=0.03 cfs 0.011 of Pond 6P: CB#1 Peak EIev=493.96' Inflow=0.23 cfs 0.012 of 12.0"x 255.0' Culvert Outflow=0.23 cfs 0.012 of Pond 7P: CB#2 Peak EIev=491.80' Inflow=0.29 cfs 0.020 of Primary=0.29 cfs 0.020 of Secondary=0.00 cfs 0.000 of Outflow=0.29 cfs 0.020 of Pond 8P: DEFENDER#2 Peak EIev=491.77' Inflow=0.29 cfs 0.020 of 12.0"x 3.0' Culvert Outflow=0.29 cfs 0.020 of POSTDEVELOPMENT_BIELECKI Type // 24-hr WQv Rainfall=1.20" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 44 Pond 9P: STM MH#2 Peak EIev=491.08' Inflow=0.29 cfs 0.020 of Primary=0.29 cfs 0.020 of Secondary=0.00 cfs 0.000 of Outflow=0.29 cfs 0.020 of Pond 10P: CB#3 Peak EIev=494.84' Inflow=0.09 cfs 0.005 of 12.0"x 246.0' Culvert Outflow=0.09 cfs 0.005 of Pond 11P: CB#5 Peak EIev=491.99' Inflow=0.09 cfs 0.007 of Primary=0.09 cfs 0.007 of Secondary=0.00 cfs 0.000 of Outflow=0.09 cfs 0.007 of Pond 12P: DEFENDER#1 Peak EIev=491.97' Inflow=0.09 cfs 0.007 of 10.0"x 4.0' Culvert Outflow=0.09 cfs 0.007 of Pond 13P: STM MH#1 Peak EIev=490.83' Inflow=0.00 cfs 0.000 of Primary=0.00 cfs 0.000 of Secondary=0.00 cfs 0.000 of Outflow=0.00 cfs 0.000 of Link A: DESIGN POINT Inflow=0.00 cfs 0.000 of Primary=0.00 cfs 0.000 of Link B: DESIGN POINT Inflow=0.00 cfs 0.000 of Primary=0.00 cfs 0.000 of Total Runoff Area = 15.501 ac Runoff Volume = 0.039 of Average Runoff Depth = 0.03" 80.47% Pervious = 12.474 ac 19.53% Impervious = 3.027 ac POSTDEVELOPMENT_BIELECKI Type // 24-hr WQv Rainfall=1.20" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 45 Summary for Subcatchment 1131: Runoff = 0.07 cfs @ 12.02 hrs, Volume= 0.008 af, Depth= 0.09" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr WQv Rainfall=1.20" Area (so CN Description 31,950 98 Paved parking & roofs 8,700 32 Woods/grass comb., Good, HSG A 8,985 39 >75% Grass cover, Good, HSG A 49,635 76 Weighted Average 17,685 Pervious Area 31,950 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.1 100 0.0300 1.50 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.75" 4.8 580 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps 5.9 680 Total, Increased to minimum Tc= 6.0 min Summary for Subcatchment 1132: Runoff = 0.23 cfs @ 11.99 hrs, Volume= 0.012 af, Depth= 0.22" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr WQv Rainfall=1.20" Area (so CN Description 21,525 98 Paved parking & roofs 7,600 39 >75% Grass cover, Good, HSG A 29,125 83 Weighted Average 7,600 Pervious Area 21,525 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1133: Runoff = 0.09 cfs @ 11.99 hrs, Volume= 0.005 af, Depth= 0.22" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type 11 24-hr WQv Rainfall=1.20" POSTDEVELOPMENT_BIELECKI Type // 24-hr WQv Rainfall=1.20" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 ©2007 HydroCAD Software Solutions LLC Page 46 Area (so CN Description 8,600 98 Paved parking & roofs 2,975 39 >75% Grass cover, Good, HSG A 11,575 83 Weighted Average 2,975 Pervious Area 8,600 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1134: Runoff = 0.00 cfs @ 17.90 hrs, Volume= 0.002 af, Depth= 0.01" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr WQv Rainfall=1.20" Area (so CN Description 34,490 98 Paved parking & roofs 23,145 43 Woods/grass comb., Fair, HSG A 14,725 39 >75% Grass cover, Good, HSG A 72,360 68 Weighted Average 37,870 Pervious Area 34,490 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.7 90 0.0500 0.22 Sheet Flow, Grass: Short n= 0.150 P2= 2.75" 3.0 370 0.0100 2.03 Shallow Concentrated Flow, Paved Kv= 20.3 fps 9.7 460 Total Summary for Subcatchment 1135: Runoff = 0.19 cfs @ 12.00 hrs, Volume= 0.011 af, Depth= 0.17" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr WQv Rainfall=1.20" Area (so CN Description 24,445 98 Paved parking & roofs 9,760 39 >75% Grass cover, Good, HSG A 34,205 81 Weighted Average 9,760 Pervious Area 24,445 Impervious Area POSTDEVELOPMENT_BIELECKI Type // 24-hr WQv Rainfall=1.20" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 47 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1136: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr WQv Rainfall=1.20" Area (so CN Description 10,125 98 Paved parking & roofs 15,780 39 >75% Grass cover, Good, HSG A 10,170 49 Basin, adjacenet area 36,075 58 Weighted Average 25,950 Pervious Area 10,125 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, DIRECT Summary for Subcatchment 1137: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr WQv Rainfall=1.20" Area (so CN Description 227,185 43 Woods/grass comb., Fair, HSG A 193,215 30 Woods, Good, HSG A 420,400 37 Weighted Average 420,400 Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 30.6 100 0.0100 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.75" 29.4 540 0.0150 0.31 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 60.0 640 Total Summary for Subcatchment OFF1: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type 11 24-hr WQv Rainfall=1.20" POSTDEVELOPMENT_BIELECKI Type // 24-hr WQv Rainfall=1.20" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 ©2007 HydroCAD Software Solutions LLC Page 48 Area (so CN Description 21,130 35 Brush, Fair, HSG A 700 98 EXISTING ROAD 21,830 37 Weighted Average 21,130 Pervious Area 700 Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 11.7 50 0.0100 0.07 Sheet Flow, Grass: Dense n= 0.240 P2= 2.75" Summary for Pond 1 P: SMA#2 - UNDERGROUND Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 0.14" for WQv event Inflow = 0.29 cfs @ 12.00 hrs, Volume= 0.020 of Outflow = 0.29 cfs @ 12.00 hrs, Volume= 0.020 af, Atten= 0%, Lag= 0.0 min Discarded = 0.29 cfs @ 12.00 hrs, Volume= 0.020 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 490.00' @ 5.00 hrs Surf.Area= 5,400 sf Storage= 0 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 0.0 min ( 922.1 - 922.1 ) Volume Invert Avail.Storage Storage Description #1 490.50' 3,184 cf 28.9"W x 16.0"H x 7.12'L StormTech SC-310x 216 Inside#2 #2 490.00' 4,126 cf STONE (Pyramidal)Listed below (Recalc) 13,500 cf Overall - 3,184 cf Embedded = 10,316 cf x 40.0% Voids 7,311 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (cubic-feet) (cubic-feet) (sq-ft) 490.00 5,400 0 0 5,400 492.50 5,400 13,500 13,500 6,135 Device Routing Invert Outlet Devices #1 Discarded 490.00' 15.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.00 cfs @ 12.00 hrs HW=490.00' (Free Discharge) L1=Exfiltration (Passes 0.00 cfs of 1.87 cfs potential flow) Summary for Pond 2P: SMA#4 - INFILTRATION BASIN Inflow Area = 1.613 ac, 49.19% Impervious, Inflow Depth = 0.00" for WQv event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Discarded = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of POSTDEVELOPMENT_BIELECKI Type // 24-hr WQv Rainfall=1.20" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 49 Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Starting Elev= 489.00' Surf.Area= 0 sf Storage= 0 cf Peak Elev= 490.00' @ 5.00 hrs Surf.Area= 4,845 sf Storage= 0 cf Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no inflow) Volume Invert Avail.Storage Storage Description #1 490.00' 16,526 cf DETENTION BASIN (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 490.00 4,845 380.0 0 0 4,845 492.50 8,550 440.0 16,526 16,526 8,892 Device Routing Invert Outlet Devices #1 Discarded 490.00' 2.000 in/hr Exfiltration over Surface area #2 Primary 491.50' 10.0' long x 30.0' breadth OVERFLOW WEIR Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63 Discarded OutFlow Max=0.00 cfs @ 5.00 hrs HW=490.00' (Free Discharge) L1=Exfiltration (Passes 0.00 cfs of 0.22 cfs potential flow) Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=490.00' TW=0.00' (Dynamic Tailwater) L2=OVERFLOW WEIR ( Controls 0.00 cfs) Summary for Pond 3P: SMA#1 - UNDERGROUND Inflow Area = 1.927 ac, 51.34% Impervious, Inflow Depth = 0.04" for WQv event Inflow = 0.09 cfs @ 11.99 hrs, Volume= 0.007 of Outflow = 0.09 cfs @ 11.99 hrs, Volume= 0.007 af, Atten= 0%, Lag= 0.0 min Discarded = 0.09 cfs @ 11.99 hrs, Volume= 0.007 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 490.00' @ 5.00 hrs Surf.Area= 4,515 sf Storage= 0 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 0.0 min ( 963.7 - 963.7 ) Volume Invert Avail.Storage Storage Description #1 490.50' 2,654 cf 28.9"W x 16.0"H x 7.12'L StormTech SC-310x 180 Inside#2 #2 490.00' 3,454 cf STONE (Pyramidal)Listed below (Recalc) 11,288 cf Overall - 2,654 cf Embedded = 8,634 cf x 40.0% Voids 6,107 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (cubic-feet) (cubic-feet) (sq-ft) 490.00 4,515 0 0 4,515 492.50 4,515 11,288 11,288 5,187 POSTDEVELOPMENT_BIELECKI Type // 24-hr WQv Rainfall=1.20" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 50 Device Routing Invert Outlet Devices #1 Discarded 490.00' 15.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.00 cfs @ 11.99 hrs HW=490.00' (Free Discharge) L1=Exfiltration (Passes 0.00 cfs of 1.57 cfs potential flow) Summary for Pond 4P: SED FOREBAY Inflow Area = 0.828 ac, 28.07% Impervious, Inflow Depth = 0.00" for WQv event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 490.00' @ 5.00 hrs Surf.Area= 770 sf Storage= 0 cf Plug-Flow detention time= (not calculated: initial storage excedes outflow) Center-of-Mass det. time= (not calculated: no inflow) Volume Invert Avail.Storage Storage Description #1 490.00' 3,527 cf FOREBAY (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 490.00 770 115.0 0 0 770 492.50 2,170 180.0 3,527 3,527 2,340 Device Routing Invert Outlet Devices #1 Primary 491.25' 10.0' long x 6.0' 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 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.37 2.51 2.70 2.68 2.68 2.67 2.65 2.65 2.65 2.65 2.66 2.66 2.67 2.69 2.72 2.76 2.83 Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=490.00' TW=490.00' (Dynamic Tailwater) t--1=Broad-Crested Rectangular Weir( Controls 0.00 cfs) Summary for Pond 5P: SMA#3 - BIORETENTION Inflow Area = 0.785 ac, 71.47% Impervious, Inflow Depth = 0.17" for WQv event Inflow = 0.19 cfs @ 12.00 hrs, Volume= 0.011 of Outflow = 0.03 cfs @ 12.05 hrs, Volume= 0.011 af, Atten= 86%, Lag= 3.2 min Discarded = 0.03 cfs @ 12.05 hrs, Volume= 0.011 of Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 493.09' @ 12.53 hrs Surf.Area= 1,145 sf Storage= 105 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 25.1 min ( 935.5 - 910.4 ) POSTDEVELOPMENT_BIELECKI Type // 24-hr WQv Rainfall=1.20" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 51 Volume Invert Avail.Storage Storage Description #1 493.00' 4,841 cf BIORETENTION (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Voids Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (%) (cubic-feet) (cubic-feet) (sq-ft) 493.00 1,145 170.0 20.0 0 0 1,145 496.00 1,145 170.0 100.0 3,435 3,435 1,655 497.00 1,685 185.0 100.0 1,406 4,841 2,114 Device Routing Invert Outlet Devices #1 Device 2 496.50' 1.50' x 1.50' Horiz. CB OVERFLOW Limited to weir flow C= 0.600 #2 Primary 493.60' 12.0" x 120.0' long OUTLET CULVERT CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 493.00' S= 0.00507' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #3 Discarded 493.00' 1.000 in/hr EXFIL TO BIO over Surface area Discarded OutFlow Max=0.03 cfs @ 12.05 hrs HW=493.06' (Free Discharge) L3=EXFIL TO BIO (Exfiltration Controls 0.03 cfs) Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=493.00' TW=490.00' (Dynamic Tailwater) L2=OUTLET CULVERT ( Controls 0.00 cfs) L1=CB OVERFLOW ( Controls 0.00 cfs) Summary for Pond 6P: CB#1 Inflow Area = 0.669 ac, 73.91% Impervious, Inflow Depth = 0.22" for WQv event Inflow = 0.23 cfs @ 11.99 hrs, Volume= 0.012 of Outflow = 0.23 cfs @ 11.99 hrs, Volume= 0.012 af, Atten= 0%, Lag= 0.0 min Primary = 0.23 cfs @ 11.99 hrs, Volume= 0.012 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 493.96' @ 11.99 hrs Device Routing Invert Outlet Devices #1 Primary 493.70' 12.0" x 255.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.30' S= 0.00947' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.22 cfs @ 11.99 hrs HW=493.96' TW=491.76' (Dynamic Tailwater) t--1=Culvert (Inlet Controls 0.22 cfs @ 1.37 fps) Summary for Pond 7P: CB#2 Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 0.14" for WQv event Inflow = 0.29 cfs @ 12.00 hrs, Volume= 0.020 of Outflow = 0.29 cfs @ 12.00 hrs, Volume= 0.020 af, Atten= 0%, Lag= 0.0 min Primary = 0.29 cfs @ 12.00 hrs, Volume= 0.020 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of POSTDEVELOPMENT_BIELECKI Type // 24-hr WQv Rainfall=1.20" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 52 Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 491.80' @ 12.04 hrs Device Routing Invert Outlet Devices #1 Secondary 491.80' 18.0" x 9.0' long TO UNDERGROUND CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.50' S= 0.03337' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 491.30' 10.0" x 7.0' long TO DEFENDER CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 490.70' S= 0.08577' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.12 cfs @ 12.00 hrs HW=491.77' TW=491.76' (Dynamic Tailwater) L2=TO DEFENDER (Outlet Controls 0.12 cfs @ 0.54 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=491.30' TW=490.83' (Dynamic Tailwater) L1=TO UNDERGROUND ( Controls 0.00 cfs) Summary for Pond 8P: DEFENDER #2 Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 0.14" for WQv event Inflow = 0.29 cfs @ 12.00 hrs, Volume= 0.020 of Outflow = 0.29 cfs @ 12.00 hrs, Volume= 0.020 af, Atten= 0%, Lag= 0.0 min Primary = 0.29 cfs @ 12.00 hrs, Volume= 0.020 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 491.77' @ 12.00 hrs Device Routing Invert Outlet Devices #1 Primary 491.40' 12.0" x 3.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.40' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.29 cfs @ 12.00 hrs HW=491.76' TW=491.08' (Dynamic Tailwater) t--1=Culvert (Barrel Controls 0.29 cfs @ 1.68 fps) Summary for Pond 9P: STM MH#2 Inflow Area = 1.808 ac, 67.90% Impervious, Inflow Depth = 0.14" for WQv event Inflow = 0.29 cfs @ 12.00 hrs, Volume= 0.020 of Outflow = 0.29 cfs @ 12.00 hrs, Volume= 0.020 af, Atten= 0%, Lag= 0.0 min Primary = 0.29 cfs @ 12.00 hrs, Volume= 0.020 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 491.08' @ 12.00 hrs POSTDEVELOPMENT_BIELECKI Type // 24-hr WQv Rainfall=1.20" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 53 Device Routing Invert Outlet Devices #1 Primary 490.83' 12.0" x 35.0' long TO UNDEGROUND CPP, square edge headwall, Ke= 0.500 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 490.83' 18.0" x 3.0' long TO ISOLATOR ROW CPP, square edge headwall, Ke= 0.500 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #3 Secondary 491.83' 12.0" x 185.0' long OVERFLOW CPP, square edge headwall, Ke= 0.500 Outlet Invert= 490.80' S= 0.00567' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.29 cfs @ 12.00 hrs HW=491.08' TW=490.00' (Dynamic Tailwater) 1=TO UNDEGROUND (Barrel Controls 0.10 cfs @ 0.94 fps) t2=TO ISOLATOR ROW (Barrel Controls 0.20 cfs @ 1.52 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=490.83' TW=490.00' (Dynamic Tailwater) L3=OVERFLOW ( Controls 0.00 cfs) Summary for Pond 10P: C113#3 Inflow Area = 0.266 ac, 74.30% Impervious, Inflow Depth = 0.22" for WQv event Inflow = 0.09 cfs @ 11.99 hrs, Volume= 0.005 of Outflow = 0.09 cfs @ 11.99 hrs, Volume= 0.005 af, Atten= 0%, Lag= 0.0 min Primary = 0.09 cfs @ 11.99 hrs, Volume= 0.005 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 494.84' @ 11.99 hrs Device Routing Invert Outlet Devices #1 Primary 494.70' 12.0" x 246.0' long Culvert CPP, square edge headwall, Ke= 0.500 Outlet Invert= 491.70' S= 0.0122 T Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.09 cfs @ 11.99 hrs HW=494.84' TW=491.97' (Dynamic Tailwater) t--1=Culvert (Inlet Controls 0.09 cfs @ 1.28 fps) Summary for Pond 11 P: C113#5 Inflow Area = 1.927 ac, 51.34% Impervious, Inflow Depth = 0.04" for WQv event Inflow = 0.09 cfs @ 11.99 hrs, Volume= 0.007 of Outflow = 0.09 cfs @ 11.99 hrs, Volume= 0.007 af, Atten= 0%, Lag= 0.0 min Primary = 0.09 cfs @ 11.99 hrs, Volume= 0.007 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 491.99' @ 12.03 hrs POSTDEVELOPMENT_BIELECKI Type // 24-hr WQv Rainfall=1.20" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 54 Device Routing Invert Outlet Devices #1 Secondary 492.10' 18.0" x 10.0' long TO UNDERGROUND CPP, square edge headwall, Ke= 0.500 Outlet Invert= 491.50' S= 0.06007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 491.70' 10.0" x 6.0' long TO DEFENDER CPP, square edge headwall, Ke= 0.500 Outlet Invert= 491.20' S= 0.08337' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.04 cfs @ 11.99 hrs HW=491.97' TW=491.97' (Dynamic Tailwater) L2=TO DEFENDER (Outlet Controls 0.04 cfs @ 0.36 fps) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=491.70' TW=490.83' (Dynamic Tailwater) L1=TO UNDERGROUND ( Controls 0.00 cfs) Summary for Pond 12P: DEFENDER #1 Inflow Area = 1.927 ac, 51.34% Impervious, Inflow Depth = 0.04" for WQv event Inflow = 0.09 cfs @ 11.99 hrs, Volume= 0.007 of Outflow = 0.09 cfs @ 11.99 hrs, Volume= 0.007 af, Atten= 0%, Lag= 0.0 min Primary = 0.09 cfs @ 11.99 hrs, Volume= 0.007 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 491.97' @ 11.99 hrs Device Routing Invert Outlet Devices #1 Primary 491.80' 10.0" x 4.0' long Culvert CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 491.70' S= 0.02507' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.09 cfs @ 11.99 hrs HW=491.97' TW=490.00' (Dynamic Tailwater) t--1=Culvert (Inlet Controls 0.09 cfs @ 1.11 fps) Summary for Pond 13P: STM MH#1 Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Secondary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Dyn-Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 490.83' @ 5.00 hrs Device Routing Invert Outlet Devices #1 Primary 490.83' 12.0" x 35.0' long TO UNDERGROUND CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #2 Primary 490.83' 18.0" x 2.0' long TO ISOLATOR ROW CPP, projecting, no headwall, Ke= 0.900 POSTDEVELOPMENT_BIELECKI Type // 24-hr WQv Rainfall=1.20" Prepared by The Environmental Design Partnership, LLP Printed 9/13/2017 HydroCAD®8.50 s/n 000476 @2007 HydroCAD Software Solutions LLC Page 55 Outlet Invert= 490.83' S= 0.00007' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior #3 Secondary 491.83' 12.0" x 163.0' long OVERFLOW CPP, projecting, no headwall, Ke= 0.900 Outlet Invert= 490.80' S= 0.00637' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=490.83' TW=490.00' (Dynamic Tailwater) �11=TO UNDERGROUND ( Controls 0.00 cfs) 2=TO ISOLATOR ROW ( Controls 0.00 cfs) Secondary OutFlow Max=0.00 cfs @ 5.00 hrs HW=490.83' TW=490.00' (Dynamic Tailwater) L3=OVERFLOW ( Controls 0.00 cfs) Summary for Link A: DESIGN POINT Inflow Area = 0.501 ac, 3.21% Impervious, Inflow Depth = 0.00" for WQv event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Summary for Link B: DESIGN POINT Inflow Area = 11.264 ac, 7.05% Impervious, Inflow Depth = 0.00" for WQv event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs