251203_42 ERW_Stormwater Report

NJ DEP 2-hr WQ Rainfall=1.25" 251202_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 12/3/2025 Page 89 Summary for Subcatchment PR 1A-P: Runoff = 0.11 cfs @ Routed to Reach DP1-PR : 1.16 hrs, Volume= 0.003 af, Depth= 0.13" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 9,975 3,192 13,167 13,167 CN 74 89 78 Description >75% Grass cover, Good, HSG C Gravel roads, HSG C Weighted Average 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.6 100 0.0725 0.30 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 0.3 103 0.1090 5.32 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 5.9 203 Total Subcatchment PR 1A-P: Flow (cfs) Hydrograph 0.115 0.11 0.11 cfs 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 0 2 4 6 Runoff NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=13,167 sf Runoff Volume=0.003 af Runoff Depth=0.13" Flow Length=203' Tc=5.9 min CN=78 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)

NJ DEP 2-hr WQ Rainfall=1.25" 251202_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Hydrograph for Subcatchment PR 1A-P: Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 1.00 0.63 0.00 2.00 1.25 0.13 3.00 1.25 0.13 4.00 1.25 0.13 5.00 1.25 0.13 6.00 1.25 0.13 7.00 1.25 0.13 8.00 1.25 0.13 9.00 1.25 0.13 10.00 1.25 0.13 11.00 1.25 0.13 12.00 1.25 0.13 13.00 1.25 0.13 14.00 1.25 0.13 15.00 1.25 0.13 16.00 1.25 0.13 17.00 1.25 0.13 18.00 1.25 0.13 19.00 1.25 0.13 20.00 1.25 0.13 21.00 1.25 0.13 22.00 1.25 0.13 23.00 1.25 0.13 24.00 1.25 0.13 25.00 1.25 0.13 26.00 1.25 0.13 27.00 1.25 0.13 28.00 1.25 0.13 29.00 1.25 0.13 30.00 1.25 0.13 31.00 1.25 0.13 32.00 1.25 0.13 33.00 1.25 0.13 34.00 1.25 0.13 35.00 1.25 0.13 36.00 1.25 0.13 37.00 1.25 0.13 38.00 1.25 0.13 39.00 1.25 0.13 40.00 1.25 0.13 41.00 1.25 0.13 42.00 1.25 0.13 43.00 1.25 0.13 44.00 1.25 0.13 45.00 1.25 0.13 46.00 1.25 0.13 47.00 1.25 0.13 48.00 1.25 0.13 49.00 1.25 0.13 50.00 1.25 0.13 51.00 1.25 0.13 Runoff (cfs) 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches) (inches) 52.00 1.25 0.13 53.00 1.25 0.13 54.00 1.25 0.13 55.00 1.25 0.13 56.00 1.25 0.13 57.00 1.25 0.13 58.00 1.25 0.13 59.00 1.25 0.13 60.00 1.25 0.13 61.00 1.25 0.13 62.00 1.25 0.13 63.00 1.25 0.13 64.00 1.25 0.13 65.00 1.25 0.13 66.00 1.25 0.13 67.00 1.25 0.13 68.00 1.25 0.13 69.00 1.25 0.13 70.00 1.25 0.13 71.00 1.25 0.13 72.00 1.25 0.13 Runoff (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Printed 12/3/2025 Page 90

NJ DEP 2-hr WQ Rainfall=1.25" 251202_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 12/3/2025 Page 91 Summary for Subcatchment PR 1B-I: Runoff = 2.63 cfs @ Routed to Reach 10R : 1.03 hrs, Volume= 0.073 af, Depth= 1.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 21,449 15,457 36,906 36,906 CN 98 98 98 Description Roofs, HSG C Paved parking, HSG C Weighted Average 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.2 100 0.0200 1.43 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.44" 0.3 36 0.0097 2.00 Shallow Concentrated Flow, Paved Kv= 20.3 fps 1.5 136 Total Subcatchment PR 1B-I: Hydrograph Runoff 2.63 cfs NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=36,906 sf Runoff Volume=0.073 af Runoff Depth=1.03" Flow Length=136' Tc=1.5 min CN=98 Flow (cfs) 2 1 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)

NJ DEP 2-hr WQ Rainfall=1.25" 251202_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Hydrograph for Subcatchment PR 1B-I: Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 1.00 0.63 0.43 2.00 1.25 1.03 3.00 1.25 1.03 4.00 1.25 1.03 5.00 1.25 1.03 6.00 1.25 1.03 7.00 1.25 1.03 8.00 1.25 1.03 9.00 1.25 1.03 10.00 1.25 1.03 11.00 1.25 1.03 12.00 1.25 1.03 13.00 1.25 1.03 14.00 1.25 1.03 15.00 1.25 1.03 16.00 1.25 1.03 17.00 1.25 1.03 18.00 1.25 1.03 19.00 1.25 1.03 20.00 1.25 1.03 21.00 1.25 1.03 22.00 1.25 1.03 23.00 1.25 1.03 24.00 1.25 1.03 25.00 1.25 1.03 26.00 1.25 1.03 27.00 1.25 1.03 28.00 1.25 1.03 29.00 1.25 1.03 30.00 1.25 1.03 31.00 1.25 1.03 32.00 1.25 1.03 33.00 1.25 1.03 34.00 1.25 1.03 35.00 1.25 1.03 36.00 1.25 1.03 37.00 1.25 1.03 38.00 1.25 1.03 39.00 1.25 1.03 40.00 1.25 1.03 41.00 1.25 1.03 42.00 1.25 1.03 43.00 1.25 1.03 44.00 1.25 1.03 45.00 1.25 1.03 46.00 1.25 1.03 47.00 1.25 1.03 48.00 1.25 1.03 49.00 1.25 1.03 50.00 1.25 1.03 51.00 1.25 1.03 Runoff (cfs) 0.00 2.50 0.07 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches) (inches) 52.00 1.25 1.03 53.00 1.25 1.03 54.00 1.25 1.03 55.00 1.25 1.03 56.00 1.25 1.03 57.00 1.25 1.03 58.00 1.25 1.03 59.00 1.25 1.03 60.00 1.25 1.03 61.00 1.25 1.03 62.00 1.25 1.03 63.00 1.25 1.03 64.00 1.25 1.03 65.00 1.25 1.03 66.00 1.25 1.03 67.00 1.25 1.03 68.00 1.25 1.03 69.00 1.25 1.03 70.00 1.25 1.03 71.00 1.25 1.03 72.00 1.25 1.03 Runoff (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Printed 12/3/2025 Page 92

NJ DEP 2-hr WQ Rainfall=1.25" 251202_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 12/3/2025 Page 93 Summary for Subcatchment PR 1B-P: Runoff = 0.65 cfs @ Routed to Reach 10R : 1.18 hrs, Volume= 0.023 af, Depth= 0.15" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 50,619 26,576 77,195 77,195 CN 74 89 79 Description >75% Grass cover, Good, HSG C Gravel roads, HSG C Weighted Average 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.2 100 0.0400 0.23 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 0.5 95 0.0361 3.06 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 7.7 195 Total Subcatchment PR 1B-P: Hydrograph Runoff 0.7 0.65 cfs 0.65 NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=77,195 sf Runoff Volume=0.023 af Runoff Depth=0.15" Flow Length=195' Tc=7.7 min CN=79 0.6 0.55 0.5 Flow (cfs) 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)

NJ DEP 2-hr WQ Rainfall=1.25" 251202_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Hydrograph for Subcatchment PR 1B-P: Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 1.00 0.63 0.00 2.00 1.25 0.15 3.00 1.25 0.15 4.00 1.25 0.15 5.00 1.25 0.15 6.00 1.25 0.15 7.00 1.25 0.15 8.00 1.25 0.15 9.00 1.25 0.15 10.00 1.25 0.15 11.00 1.25 0.15 12.00 1.25 0.15 13.00 1.25 0.15 14.00 1.25 0.15 15.00 1.25 0.15 16.00 1.25 0.15 17.00 1.25 0.15 18.00 1.25 0.15 19.00 1.25 0.15 20.00 1.25 0.15 21.00 1.25 0.15 22.00 1.25 0.15 23.00 1.25 0.15 24.00 1.25 0.15 25.00 1.25 0.15 26.00 1.25 0.15 27.00 1.25 0.15 28.00 1.25 0.15 29.00 1.25 0.15 30.00 1.25 0.15 31.00 1.25 0.15 32.00 1.25 0.15 33.00 1.25 0.15 34.00 1.25 0.15 35.00 1.25 0.15 36.00 1.25 0.15 37.00 1.25 0.15 38.00 1.25 0.15 39.00 1.25 0.15 40.00 1.25 0.15 41.00 1.25 0.15 42.00 1.25 0.15 43.00 1.25 0.15 44.00 1.25 0.15 45.00 1.25 0.15 46.00 1.25 0.15 47.00 1.25 0.15 48.00 1.25 0.15 49.00 1.25 0.15 50.00 1.25 0.15 51.00 1.25 0.15 Runoff (cfs) 0.00 0.00 0.07 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches) (inches) 52.00 1.25 0.15 53.00 1.25 0.15 54.00 1.25 0.15 55.00 1.25 0.15 56.00 1.25 0.15 57.00 1.25 0.15 58.00 1.25 0.15 59.00 1.25 0.15 60.00 1.25 0.15 61.00 1.25 0.15 62.00 1.25 0.15 63.00 1.25 0.15 64.00 1.25 0.15 65.00 1.25 0.15 66.00 1.25 0.15 67.00 1.25 0.15 68.00 1.25 0.15 69.00 1.25 0.15 70.00 1.25 0.15 71.00 1.25 0.15 72.00 1.25 0.15 Runoff (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Printed 12/3/2025 Page 94

NJ DEP 2-hr WQ Rainfall=1.25" 251202_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 12/3/2025 Page 95 Summary for Subcatchment PR 2-P: Runoff = 0.04 cfs @ Routed to Reach DP2-PR : 1.16 hrs, Volume= 0.001 af, Depth= 0.10" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 6,447 958 7,405 7,405 CN 74 89 76 Description >75% Grass cover, Good, HSG C Gravel roads, HSG C Weighted Average 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.6 84 0.0833 0.30 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" Subcatchment PR 2-P: Flow (cfs) Hydrograph 0.046 0.044 0.04 cfs 0.042 0.04 0.038 0.036 0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 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) NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=7,405 sf Runoff Volume=0.001 af Runoff Depth=0.10" Flow Length=84' Slope=0.0833 '/' Tc=4.6 min CN=76 Runoff

NJ DEP 2-hr WQ Rainfall=1.25" 251202_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Hydrograph for Subcatchment PR 2-P: Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 1.00 0.63 0.00 2.00 1.25 0.10 3.00 1.25 0.10 4.00 1.25 0.10 5.00 1.25 0.10 6.00 1.25 0.10 7.00 1.25 0.10 8.00 1.25 0.10 9.00 1.25 0.10 10.00 1.25 0.10 11.00 1.25 0.10 12.00 1.25 0.10 13.00 1.25 0.10 14.00 1.25 0.10 15.00 1.25 0.10 16.00 1.25 0.10 17.00 1.25 0.10 18.00 1.25 0.10 19.00 1.25 0.10 20.00 1.25 0.10 21.00 1.25 0.10 22.00 1.25 0.10 23.00 1.25 0.10 24.00 1.25 0.10 25.00 1.25 0.10 26.00 1.25 0.10 27.00 1.25 0.10 28.00 1.25 0.10 29.00 1.25 0.10 30.00 1.25 0.10 31.00 1.25 0.10 32.00 1.25 0.10 33.00 1.25 0.10 34.00 1.25 0.10 35.00 1.25 0.10 36.00 1.25 0.10 37.00 1.25 0.10 38.00 1.25 0.10 39.00 1.25 0.10 40.00 1.25 0.10 41.00 1.25 0.10 42.00 1.25 0.10 43.00 1.25 0.10 44.00 1.25 0.10 45.00 1.25 0.10 46.00 1.25 0.10 47.00 1.25 0.10 48.00 1.25 0.10 49.00 1.25 0.10 50.00 1.25 0.10 51.00 1.25 0.10 Runoff (cfs) 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time Precip. Excess (hours) (inches) (inches) 52.00 1.25 0.10 53.00 1.25 0.10 54.00 1.25 0.10 55.00 1.25 0.10 56.00 1.25 0.10 57.00 1.25 0.10 58.00 1.25 0.10 59.00 1.25 0.10 60.00 1.25 0.10 61.00 1.25 0.10 62.00 1.25 0.10 63.00 1.25 0.10 64.00 1.25 0.10 65.00 1.25 0.10 66.00 1.25 0.10 67.00 1.25 0.10 68.00 1.25 0.10 69.00 1.25 0.10 70.00 1.25 0.10 71.00 1.25 0.10 72.00 1.25 0.10 Runoff (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Printed 12/3/2025 Page 96

NJ DEP 2-hr WQ Rainfall=1.25" 251202_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 12/3/2025 Page 97 Summary for Reach 10R: Inflow Area = 2.619 ac, 32.35% Impervious, Inflow Depth = 0.44" for WQ event Inflow = 2.66 cfs @ 1.04 hrs, Volume= 0.096 af Outflow = 2.66 cfs @ 1.04 hrs, Volume= 0.096 af, Atten= 0%, Lag= 0.0 min Routed to Pond BASIN : Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Reach 10R: Hydrograph Inflow Outflow 2.66 cfs 2.66 cfs Inflow Area=2.619 ac Flow (cfs) 2 1 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)

NJ DEP 2-hr WQ Rainfall=1.25" 251202_42 ERW Waystone - Future Rainfall Printed 12/3/2025 Page 98 Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Hydrograph for Reach 10R: Time (hours) 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 16.00 17.00 18.00 19.00 20.00 21.00 22.00 23.00 24.00 25.00 26.00 27.00 28.00 29.00 30.00 31.00 32.00 33.00 34.00 35.00 36.00 37.00 38.00 39.00 40.00 41.00 42.00 43.00 44.00 45.00 46.00 47.00 48.00 49.00 50.00 51.00 Inflow Elevation (cfs) (feet) 0.00 2.51 0.15 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Outflow (cfs) 0.00 2.51 0.15 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Time (hours) 52.00 53.00 54.00 55.00 56.00 57.00 58.00 59.00 60.00 61.00 62.00 63.00 64.00 65.00 66.00 67.00 68.00 69.00 70.00 71.00 72.00 Inflow (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Elevation (feet) Outflow (cfs) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00