251203_42 ERW_Stormwater Report

NJ DEP 2-hr WQ Rainfall=1.25" 250903_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 11/25/2025 Page 40 Summary for Subcatchment EDA-1 (PERV): Runoff = 0.28 cfs @ Routed to Reach DP1-EX : 1.32 hrs, Volume= 0.014 af, Depth= 0.07" 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) 102,351 102,351 CN 74 Description >75% Grass cover, Good, HSG C 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.9 100 0.0140 0.15 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 2.2 401 0.0350 3.01 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 13.1 501 Total Subcatchment EDA-1 (PERV): Hydrograph Runoff 0.3 0.28 cfs 0.28 NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=102,351 sf Runoff Volume=0.014 af Runoff Depth=0.07" Flow Length=501' Tc=13.1 min CN=74 0.26 0.24 0.22 Flow (cfs) 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 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" 250903_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 EDA-1 (PERV): Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 1.00 0.63 0.00 2.00 1.25 0.07 3.00 1.25 0.07 4.00 1.25 0.07 5.00 1.25 0.07 6.00 1.25 0.07 7.00 1.25 0.07 8.00 1.25 0.07 9.00 1.25 0.07 10.00 1.25 0.07 11.00 1.25 0.07 12.00 1.25 0.07 13.00 1.25 0.07 14.00 1.25 0.07 15.00 1.25 0.07 16.00 1.25 0.07 17.00 1.25 0.07 18.00 1.25 0.07 19.00 1.25 0.07 20.00 1.25 0.07 21.00 1.25 0.07 22.00 1.25 0.07 23.00 1.25 0.07 24.00 1.25 0.07 25.00 1.25 0.07 26.00 1.25 0.07 27.00 1.25 0.07 28.00 1.25 0.07 29.00 1.25 0.07 30.00 1.25 0.07 31.00 1.25 0.07 32.00 1.25 0.07 33.00 1.25 0.07 34.00 1.25 0.07 35.00 1.25 0.07 36.00 1.25 0.07 37.00 1.25 0.07 38.00 1.25 0.07 39.00 1.25 0.07 40.00 1.25 0.07 41.00 1.25 0.07 42.00 1.25 0.07 43.00 1.25 0.07 44.00 1.25 0.07 45.00 1.25 0.07 46.00 1.25 0.07 47.00 1.25 0.07 48.00 1.25 0.07 49.00 1.25 0.07 50.00 1.25 0.07 51.00 1.25 0.07 Runoff (cfs) 0.00 0.00 0.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.07 53.00 1.25 0.07 54.00 1.25 0.07 55.00 1.25 0.07 56.00 1.25 0.07 57.00 1.25 0.07 58.00 1.25 0.07 59.00 1.25 0.07 60.00 1.25 0.07 61.00 1.25 0.07 62.00 1.25 0.07 63.00 1.25 0.07 64.00 1.25 0.07 65.00 1.25 0.07 66.00 1.25 0.07 67.00 1.25 0.07 68.00 1.25 0.07 69.00 1.25 0.07 70.00 1.25 0.07 71.00 1.25 0.07 72.00 1.25 0.07 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 11/25/2025 Page 41

NJ DEP 2-hr WQ Rainfall=1.25" 250903_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 11/25/2025 Page 42 Summary for Subcatchment EDA-2 (PERV.): Runoff = 0.06 cfs @ Routed to Reach DP2-EX : 1.22 hrs, Volume= 0.003 af, Depth= 0.07" 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 (ac) 0.423 0.423 CN 74 Description >75% Grass cover, Good, HSG C 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.1 100 0.0410 0.24 Sheet Flow, Grass: Short n= 0.150 P2= 3.44" 0.1 21 0.1050 5.22 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 7.2 121 Total Subcatchment EDA-2 (PERV.): Hydrograph Runoff 0.065 0.06 cfs NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=0.423 ac Runoff Volume=0.003 af Runoff Depth=0.07" Flow Length=121' Tc=7.2 min CN=74 0.06 0.055 0.05 Flow (cfs) 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 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" 250903_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 EDA-2 (PERV.): Time Precip. Excess (hours) (inches) (inches) 0.00 0.00 0.00 1.00 0.63 0.00 2.00 1.25 0.07 3.00 1.25 0.07 4.00 1.25 0.07 5.00 1.25 0.07 6.00 1.25 0.07 7.00 1.25 0.07 8.00 1.25 0.07 9.00 1.25 0.07 10.00 1.25 0.07 11.00 1.25 0.07 12.00 1.25 0.07 13.00 1.25 0.07 14.00 1.25 0.07 15.00 1.25 0.07 16.00 1.25 0.07 17.00 1.25 0.07 18.00 1.25 0.07 19.00 1.25 0.07 20.00 1.25 0.07 21.00 1.25 0.07 22.00 1.25 0.07 23.00 1.25 0.07 24.00 1.25 0.07 25.00 1.25 0.07 26.00 1.25 0.07 27.00 1.25 0.07 28.00 1.25 0.07 29.00 1.25 0.07 30.00 1.25 0.07 31.00 1.25 0.07 32.00 1.25 0.07 33.00 1.25 0.07 34.00 1.25 0.07 35.00 1.25 0.07 36.00 1.25 0.07 37.00 1.25 0.07 38.00 1.25 0.07 39.00 1.25 0.07 40.00 1.25 0.07 41.00 1.25 0.07 42.00 1.25 0.07 43.00 1.25 0.07 44.00 1.25 0.07 45.00 1.25 0.07 46.00 1.25 0.07 47.00 1.25 0.07 48.00 1.25 0.07 49.00 1.25 0.07 50.00 1.25 0.07 51.00 1.25 0.07 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 0.07 53.00 1.25 0.07 54.00 1.25 0.07 55.00 1.25 0.07 56.00 1.25 0.07 57.00 1.25 0.07 58.00 1.25 0.07 59.00 1.25 0.07 60.00 1.25 0.07 61.00 1.25 0.07 62.00 1.25 0.07 63.00 1.25 0.07 64.00 1.25 0.07 65.00 1.25 0.07 66.00 1.25 0.07 67.00 1.25 0.07 68.00 1.25 0.07 69.00 1.25 0.07 70.00 1.25 0.07 71.00 1.25 0.07 72.00 1.25 0.07 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 11/25/2025 Page 43

NJ DEP 2-hr WQ Rainfall=1.25" 250903_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 11/25/2025 Page 44 Summary for Reach DP1-EX: Inflow Area = Inflow = Outflow = 2.669 ac, 11.97% Impervious, Inflow Depth = 0.19" for WQ event 0.96 cfs @ 1.05 hrs, Volume= 0.042 af 0.96 cfs @ 1.05 hrs, Volume= 0.042 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Reach DP1-EX: Hydrograph Inflow Outflow 0.96 cfs Inflow Area=2.669 ac Flow (cfs) 1 0.96 cfs 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" 250903_42 ERW Waystone - Future Rainfall Printed 11/25/2025 Page 45 Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Hydrograph for Reach DP1-EX: 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 0.89 0.12 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.89 0.12 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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

NJ DEP 2-hr WQ Rainfall=1.25" 250903_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 11/25/2025 Page 46 Summary for Reach DP2-EX: Inflow Area = Inflow = Outflow = 0.423 ac, 0.00% Impervious, Inflow Depth = 0.07" for WQ event 0.06 cfs @ 1.22 hrs, Volume= 0.003 af 0.06 cfs @ 1.22 hrs, Volume= 0.003 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Reach DP2-EX: Hydrograph 0.065 0.06 Inflow Outflow 0.06 cfs 0.06 cfs Inflow Area=0.423 ac 0.055 0.05 Flow (cfs) 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 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" 250903_42 ERW Waystone - Future Rainfall Printed 11/25/2025 Page 47 Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Hydrograph for Reach DP2-EX: 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 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 Outflow (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 (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

PR 1B-I PR 1B-P PR 2-P 10R PR 1A-P DP2-PR BASIN DP1-PR Subcat Reach Pond Link Routing Diagram for 251202_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design, Printed 12/3/2025 HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC

251202_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Area Listing (selected nodes) Area (acres) CN Description (subcatchment-numbers) 1.539 0.705 0.355 0.492 3.092 74 89 98 98 84 >75% Grass cover, Good, HSG C (PR 1A-P, PR 1B-P, PR 2-P) Gravel roads, HSG C (PR 1A-P, PR 1B-P, PR 2-P) Paved parking, HSG C (PR 1B-I) Roofs, HSG C (PR 1B-I) TOTAL AREA Printed 12/3/2025 Page 2