2026 05 Storm Water Management Report rcd 5 6 2026

0.036 0.5 P2=4.09" 0.034 WQ Rainfall=1.25" 0.45 0.032 Runoff Area=0.204 ac 0.03 P2=4.09" Flow (cfs) 0.4 0.028 0.35 Runoff Volume=0.018 af 0.026 Runoff Area=0.071 ac Runoff Depth=1.03" Flow (cfs) 0.024 0.3 0.022 Runoff Volume=0.001 af 0.25 Flow Length=419' 0.02

0.02 Runoff Depth=0.17" 0.018 0.2 Tc=2.0 min 0.016 Flow Length=381' 0.15 0.014 CN=98 0.012 Tc=5.0 min 0.1 0.01 0.05 0.008 CN=80 0.006 0 0.004 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) 0.002

Time (hours) 0.002 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)

2026-04 Proposed & Existing Conditions NJ DEP 2-hr WQ Rainfall=1.25", P2=4.09" 2026-04 Proposed & Existing Conditions NJ DEP 2-hr WQ Rainfall=1.25", P2=4.09" Prepared by Dynamic Engineering Printed 5/5/2026 Prepared by Dynamic Engineering Printed 5/5/2026 HydroCAD® 10.20-7a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 7 HydroCAD® 10.20-7a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 8 Summary for Pond 1P: UG BASIN Pond 1P: UG BASIN Hydrograph Inflow Area = 0.142 ac,100.00% Impervious, Inflow Depth = 1.03" for WQ event Inflow = 0.44 cfs @ 1.08 hrs, Volume= 0.012 af 0.44 cfs Inflow Primary Outflow = 0.22 cfs @ 1.10 hrs, Volume= 0.012 af, Atten= 49%, Lag= 1.2 min 0.48 0.46 Primary = 0.22 cfs @ 1.10 hrs, Volume= 0.012 af 0.44 Inflow Area=0.142 ac Routed to Link 4L : POI #1 0.42

0.42 0.4 0.38 Peak Elev=618.77' Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.001 hrs Peak Elev= 618.77' @ 1.10 hrs Surf.Area= 0.006 ac Storage= 0.004 af 0.36 0.34 Storage=0.004 af 0.32 0.3 Plug-Flow detention time= 8.6 min calculated for 0.012 af (100% of inflow) Flow (cfs) 0.28 Center-of-Mass det. time= 8.6 min ( 74.3 - 65.6 ) 0.260.22 cfs 0.24 0.22 Volume Invert Avail.Storage Storage Description 0.2 0.18 #1 617.75'

0.2 0.18 #1 617.75' 0.020 af 48.0" Round Pipe Storage 0.16 L= 70.0' 0.14 0.12 0.1 Device Routing Invert Outlet Devices 0.08 #1 Primary 617.75' 15.0" Round RCP_Round 15" 0.06 0.04 L= 15.0' RCP, rounded edge headwall, Ke= 0.100 0.02 Inlet / Outlet Invert= 617.75' / 617.55' S= 0.0133 '/' Cc= 0.900 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 n= 0.012 Concrete pipe, finished, Flow Area= 1.23 sf Time (hours) #2 Device 1 617.75' 3.0" Vert. Orifice C= 0.600 Limited to weir flow at low heads #3 Device 1 620.25' 6.0" Vert. Orifice C= 0.600 Limited to weir flow at low heads #4 Device 1 621.45' 4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s) Primary OutFlow Max=0.22 cfs @ 1.10 hrs HW=618.77' (Free Discharge) 1=RCP_Round 15" (Passes 0.22 cfs of 3.65 cfs potential flow) 2=Orifice (Orifice Controls 0.22 cfs @ 4.55 fps) 3=Orifice ( Controls 0.00 cfs) 4=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)

2026-04 Proposed & Existing Conditions NJ DEP 2-hr WQ Rainfall=1.25", P2=4.09" 2026-04 Proposed & Existing Conditions NJ DEP 2-hr WQ Rainfall=1.25", P2=4.09" Prepared by Dynamic Engineering Printed 5/5/2026 Prepared by Dynamic Engineering Printed 5/5/2026 HydroCAD® 10.20-7a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 9 HydroCAD® 10.20-7a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 10 Summary for Pond 2P: BIO BASIN Pond 2P: BIO BASIN Hydrograph Inflow Area = 0.146 ac, 53.42% Impervious, Inflow Depth = 0.63" for WQ event Inflow = 0.27 cfs @ 1.08 hrs, Volume= 0.008 af 0.27 cfs Inflow Primary Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min 0.28 Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af 0.26 Inflow Area=0.146 ac Routed to Link 4L : POI #1

Inflow Area=0.146 ac Routed to Link 4L : POI #1 0.24 Peak Elev=622.79' Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.001 hrs 0.22 Peak Elev= 622.79' @ 2.29 hrs Surf.Area= 524 sf Storage= 336 cf 0.2 Storage=336 cf 0.18 Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Flow (cfs) 0.16 Center-of-Mass det. time= (not calculated: no outflow) 0.14 Volume Invert Avail.Storage Storage Description 0.12 #1 622.00' 1,219 cf Custom Stage Data (Prismatic)Listed below (Recalc) 0.1 0.08 Elevation Surf.Area Inc.Store Cum.Store 0.06 (feet) (sq-ft) (cubic-feet) (cubic-feet) 0.04 622.00 323 0 0 623.00 577 450 450

0.04 622.00 323 0 0 623.00 577 450 450 0.00 cfs 0.02 624.00 960 769 1,219 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) Device Routing Invert Outlet Devices #1 Primary 619.05' 15.0" Round Culvert L= 35.0' RCP, rounded edge headwall, Ke= 0.100 Inlet / Outlet Invert= 619.05' / 618.93' S= 0.0034 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.23 sf #2 Device 1 622.86' 0.6' long Sharp-Crested Rectangular Weir 2 End Contraction(s) #3 Device 1 623.70' 48.0" x 48.0" Horiz. Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=622.00' (Free Discharge) 1=Culvert (Passes 0.00 cfs of 9.60 cfs potential flow) 2=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs) 3=Grate ( Controls 0.00 cfs)

2026-04 Proposed & Existing Conditions NJ DEP 2-hr WQ Rainfall=1.25", P2=4.09" Prepared by Dynamic Engineering Printed 5/5/2026 HydroCAD® 10.20-7a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 11 Summary for Link 4L: POI #1 Inflow Area = 0.563 ac, 75.31% Impervious, Inflow Depth = 0.66" for WQ event Inflow = 0.88 cfs @ 1.09 hrs, Volume= 0.031 af Primary = 0.88 cfs @ 1.09 hrs, Volume= 0.031 af, Atten= 0%, Lag= 0.0 min Routed to nonexistent node 18L Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.001 hrs Link 4L: POI #1 Hydrograph Inflow 0.88 cfs Primary 0.950.88 cfs 0.9 Inflow Area=0.563 ac 0.85 0.8 0.75 0.7 0.65 0.6 Flow (cfs) 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)