251203_42 ERW_Stormwater Report

251202_42 ERW Waystone - Future Rainfall NOAA 24-hr D 100-Year Rainfall=11.52" Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 12/3/2025 Page 80 Summary for Reach DP2-PR: Inflow Area = Inflow = Outflow = 0.170 ac, 0.00% Impervious, Inflow Depth = 8.44" for 100-Year event 1.64 cfs @ 12.11 hrs, Volume= 0.120 af 1.64 cfs @ 12.11 hrs, Volume= 0.120 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-PR: Hydrograph Inflow Outflow 1.64 cfs Flow (cfs) 1.64 cfs Inflow Area=0.170 ac 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)

251202_42 ERW Waystone - Future Rainfall NOAA 24-hr D 100-Year Rainfall=11.52" Printed 12/3/2025 Page 81 Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Hydrograph for Reach DP2-PR: 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 0.00 0.00 0.00 0.00 0.01 0.01 0.02 0.03 0.05 0.11 0.94 0.17 0.09 0.06 0.05 0.04 0.03 0.03 0.03 0.03 0.02 0.02 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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 0.00 0.00 0.00 0.00 0.01 0.01 0.02 0.03 0.05 0.11 0.94 0.17 0.09 0.06 0.05 0.04 0.03 0.03 0.03 0.03 0.02 0.02 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 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

251202_42 ERW Waystone - Future Rainfall NOAA 24-hr D 100-Year Rainfall=11.52" Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 12/3/2025 Page 82 Summary for Pond BASIN: Inflow Area = 2.619 ac, 32.35% Impervious, Inflow Depth = 9.63" for 100-Year event Inflow = 23.63 cfs @ 12.10 hrs, Volume= 2.103 af Outflow = 13.44 cfs @ 12.24 hrs, Volume= 2.103 af, Atten= 43%, Lag= 8.6 min Discarded = 0.58 cfs @ 12.24 hrs, Volume= 0.550 af Primary = 12.86 cfs @ 12.24 hrs, Volume= 1.553 af Routed to Reach DP1-PR : Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Peak Elev= 19.87' @ 12.24 hrs Surf.Area= 0.168 ac Storage= 0.531 af Plug-Flow detention time= 70.9 min calculated for 2.102 af (100% of inflow) Center-of-Mass det. time= 71.1 min ( 845.5 - 774.4 ) Volume #1A Invert 15.00' Avail.Storage 0.199 af #2A 15.75' 0.341 af 0.539 af Storage Description 51.42'W x 141.93'L x 5.00'H Field A 0.838 af Overall - 0.341 af Embedded = 0.497 af x 40.0% Voids ADS_StormTech MC-3500 d +Cap x 133 Inside #1 Effective Size= 70.4"W x 45.0"H => 15.33 sf x 7.17'L = 110.0 cf Overall Size= 77.0"W x 45.0"H x 7.50'L with 0.33' Overlap 133 Chambers in 7 Rows Cap Storage= 14.9 cf x 2 x 7 rows = 208.6 cf Total Available Storage Storage Group A created with Chamber Wizard Device #1 Routing Primary Invert 15.89' #2 Primary 16.73' #3 Primary 18.75' #4 Discarded 15.00' Outlet Devices 14.0" W x 3.5" H Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads 20.0" W x 5.0" H Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads 1.0' long x 0.5' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 Coef. (English) 2.80 2.92 3.08 3.30 3.32 1.000 in/hr Exfiltration over Surface area Conductivity to Groundwater Elevation = 13.00' Discarded OutFlow Max=0.58 cfs @ 12.24 hrs HW=19.86' (Free Discharge) 4=Exfiltration ( Controls 0.58 cfs) Primary OutFlow Max=12.77 cfs @ 12.24 hrs HW=19.86' (Free Discharge) 1=Orifice/Grate (Orifice Controls 3.20 cfs @ 9.41 fps) 2=Orifice/Grate (Orifice Controls 5.71 cfs @ 8.22 fps) 3=Broad-Crested Rectangular Weir (Weir Controls 3.86 cfs @ 3.49 fps)

251202_42 ERW Waystone - Future Rainfall NOAA 24-hr D 100-Year Rainfall=11.52" Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 12/3/2025 Page 83 Pond BASIN: - Chamber Wizard Field A Chamber Model = ADS_StormTechMC-3500 d +Cap (ADS StormTech® MC-3500 d rev 03/14 with Cap volume) Effective Size= 70.4"W x 45.0"H => 15.33 sf x 7.17'L = 110.0 cf Overall Size= 77.0"W x 45.0"H x 7.50'L with 0.33' Overlap Cap Storage= 14.9 cf x 2 x 7 rows = 208.6 cf 77.0" Wide + 9.0" Spacing = 86.0" C-C Row Spacing 19 Chambers/Row x 7.17' Long +1.85' Cap Length x 2 = 139.93' Row Length +12.0" End Stone x 2 = 141.93' Base Length 7 Rows x 77.0" Wide + 9.0" Spacing x 6 + 12.0" Side Stone x 2 = 51.42' Base Width 9.0" Stone Base + 45.0" Chamber Height + 6.0" Stone Cover = 5.00' Field Height 133 Chambers x 110.0 cf + 14.9 cf Cap Volume x 2 x 7 Rows = 14,832.2 cf Chamber Storage 36,487.8 cf Field - 14,832.2 cf Chambers = 21,655.6 cf Stone x 40.0% Voids = 8,662.3 cf Stone Storage Chamber Storage + Stone Storage = 23,494.5 cf = 0.539 af Overall Storage Efficiency = 64.4% Overall System Size = 141.93' x 51.42' x 5.00' 133 Chambers 1,351.4 cy Field 802.1 cy Stone

NOAA 24-hr D 100-Year Rainfall=11.52" 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 84 Pond BASIN: Hydrograph 23.63 cfs Inflow Area=2.619 ac Peak Elev=19.87' Storage=0.531 af 26 24 22 20 18 Flow (cfs) 13.44 cfs 16 14 12.86 cfs 12 10 8 6 4 0.58 cfs 2 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) Inflow Outflow Discarded Primary

251202_42 ERW Waystone - Future Rainfall NOAA 24-hr D 100-Year Rainfall=11.52" Printed 12/3/2025 Page 85 Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Hydrograph for Pond BASIN: Time (hours) 0.00 2.50 5.00 7.50 10.00 12.50 15.00 17.50 20.00 22.50 25.00 27.50 30.00 32.50 35.00 37.50 40.00 42.50 45.00 47.50 50.00 52.50 55.00 57.50 60.00 62.50 65.00 67.50 70.00 Inflow (cfs) 0.00 0.11 0.21 0.43 1.05 5.44 0.97 0.60 0.46 0.37 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Storage Elevation (acre-feet) (feet) 0.000 15.00 0.002 15.03 0.004 15.06 0.028 15.41 0.103 16.11 0.467 18.99 0.166 16.56 0.105 16.13 0.093 16.04 0.087 16.01 0.063 15.84 0.018 15.27 0.000 15.00 0.000 15.00 0.000 15.00 0.000 15.00 0.000 15.00 0.000 15.00 0.000 15.00 0.000 15.00 0.000 15.00 0.000 15.00 0.000 15.00 0.000 15.00 0.000 15.00 0.000 15.00 0.000 15.00 0.000 15.00 0.000 15.00 Outflow (cfs) 0.00 0.11 0.17 0.20 0.66 8.45 1.48 0.71 0.49 0.40 0.24 0.19 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Discarded (cfs) 0.00 0.11 0.17 0.20 0.26 0.51 0.30 0.26 0.26 0.25 0.24 0.19 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Primary (cfs) 0.00 0.00 0.00 0.00 0.40 7.94 1.18 0.45 0.23 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

251202_42 ERW Waystone - Future Rainfall NOAA 24-hr D 100-Year Rainfall=11.52" Printed 12/3/2025 Page 86 Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Stage-Discharge for Pond BASIN: Elevation (feet) 15.00 15.05 15.10 15.15 15.20 15.25 15.30 15.35 15.40 15.45 15.50 15.55 15.60 15.65 15.70 15.75 15.80 15.85 15.90 15.95 16.00 16.05 16.10 16.15 16.20 16.25 16.30 16.35 16.40 16.45 16.50 16.55 16.60 16.65 16.70 16.75 16.80 16.85 16.90 16.95 17.00 17.05 17.10 17.15 17.20 17.25 17.30 17.35 17.40 17.45 17.50 17.55 Discharge (cfs) 0.00 0.17 0.18 0.18 0.19 0.19 0.19 0.20 0.20 0.21 0.21 0.22 0.22 0.22 0.23 0.23 0.24 0.24 0.25 0.30 0.39 0.50 0.62 0.76 0.91 1.02 1.11 1.19 1.27 1.34 1.41 1.47 1.53 1.59 1.65 1.71 1.85 2.02 2.23 2.45 2.70 2.96 3.24 3.53 3.78 3.99 4.19 4.37 4.54 4.70 4.85 5.00 Discarded (cfs) 0.00 0.17 0.18 0.18 0.19 0.19 0.19 0.20 0.20 0.21 0.21 0.22 0.22 0.22 0.23 0.23 0.24 0.24 0.24 0.25 0.25 0.26 0.26 0.27 0.27 0.27 0.28 0.28 0.29 0.29 0.30 0.30 0.30 0.31 0.31 0.32 0.32 0.33 0.33 0.33 0.34 0.34 0.35 0.35 0.35 0.36 0.36 0.37 0.37 0.38 0.38 0.38 Primary (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 0.06 0.14 0.24 0.36 0.50 0.64 0.74 0.83 0.91 0.98 1.05 1.11 1.17 1.23 1.28 1.33 1.40 1.53 1.70 1.90 2.12 2.36 2.62 2.89 3.18 3.42 3.63 3.82 4.00 4.16 4.32 4.47 4.62 Elevation (feet) 17.60 17.65 17.70 17.75 17.80 17.85 17.90 17.95 18.00 18.05 18.10 18.15 18.20 18.25 18.30 18.35 18.40 18.45 18.50 18.55 18.60 18.65 18.70 18.75 18.80 18.85 18.90 18.95 19.00 19.05 19.10 19.15 19.20 19.25 19.30 19.35 19.40 19.45 19.50 19.55 19.60 19.65 19.70 19.75 19.80 19.85 19.90 19.95 20.00 Discharge (cfs) 5.15 5.28 5.42 5.55 5.68 5.80 5.92 6.04 6.16 6.27 6.38 6.49 6.60 6.71 6.81 6.91 7.01 7.11 7.21 7.31 7.40 7.50 7.59 7.68 7.80 7.95 8.11 8.29 8.48 8.68 8.90 9.12 9.36 9.61 9.87 10.14 10.43 10.74 11.06 11.39 11.69 12.01 12.33 12.65 12.98 13.31 13.65 13.99 14.34 Discarded (cfs) 0.39 0.39 0.40 0.40 0.41 0.41 0.41 0.42 0.42 0.43 0.43 0.43 0.44 0.44 0.45 0.45 0.46 0.46 0.46 0.47 0.47 0.48 0.48 0.49 0.49 0.49 0.50 0.50 0.51 0.51 0.52 0.52 0.52 0.53 0.53 0.54 0.54 0.54 0.55 0.55 0.56 0.56 0.57 0.57 0.57 0.58 0.58 0.59 0.59 Primary (cfs) 4.76 4.89 5.02 5.15 5.27 5.39 5.51 5.62 5.74 5.85 5.95 6.06 6.16 6.26 6.36 6.46 6.56 6.65 6.75 6.84 6.93 7.02 7.11 7.20 7.31 7.

54 0.55 0.55 0.56 0.56 0.57 0.57 0.57 0.58 0.58 0.59 0.59 Primary (cfs) 4.76 4.89 5.02 5.15 5.27 5.39 5.51 5.62 5.74 5.85 5.95 6.06 6.16 6.26 6.36 6.46 6.56 6.65 6.75 6.84 6.93 7.02 7.11 7.20 7.31 7.46 7.62 7.79 7.97 8.17 8.38 8.60 8.83 9.08 9.34 9.60 9.89 10.19 10.51 10.83 11.14 11.45 11.76 12.08 12.41 12.73 13.07 13.41 13.75

251202_42 ERW Waystone - Future Rainfall NOAA 24-hr D 100-Year Rainfall=11.52" Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond BASIN: Elevation (feet) 15.00 15.05 15.10 15.15 15.20 15.25 15.30 15.35 15.40 15.45 15.50 15.55 15.60 15.65 15.70 15.75 15.80 15.85 15.90 15.95 16.00 16.05 16.10 16.15 16.20 16.25 16.30 16.35 16.40 16.45 16.50 16.55 16.60 16.65 16.70 16.75 16.80 16.85 16.90 16.95 17.00 17.05 17.10 17.15 17.20 17.25 17.30 17.35 17.40 17.45 17.50 17.55 Surface (acres) 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 Storage (acre-feet) 0.000 0.003 0.007 0.010 0.013 0.017 0.020 0.023 0.027 0.030 0.034 0.037 0.040 0.044 0.047 0.050 0.058 0.065 0.072 0.079 0.086 0.094 0.101 0.108 0.115 0.122 0.129 0.136 0.143 0.151 0.158 0.165 0.172 0.179 0.186 0.193 0.199 0.206 0.213 0.220 0.227 0.234 0.241 0.247 0.254 0.261 0.267 0.274 0.281 0.287 0.294 0.300 Elevation (feet) 17.60 17.65 17.70 17.75 17.80 17.85 17.90 17.95 18.00 18.05 18.10 18.15 18.20 18.25 18.30 18.35 18.40 18.45 18.50 18.55 18.60 18.65 18.70 18.75 18.80 18.85 18.90 18.95 19.00 19.05 19.10 19.15 19.20 19.25 19.30 19.35 19.40 19.45 19.50 19.55 19.60 19.65 19.70 19.75 19.80 19.85 19.90 19.95 20.00 Surface (acres) 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 0.168 Storage (acre-feet) 0.307 0.313 0.320 0.326 0.332 0.339 0.345 0.351 0.357 0.363 0.369 0.375 0.381 0.387 0.393 0.399 0.405 0.410 0.416 0.421 0.427 0.432 0.438 0.443 0.448 0.453 0.458 0.463 0.467 0.472 0.476 0.480 0.484 0.488 0.492 0.495 0.499 0.502 0.506 0.509 0.513 0.516 0.519 0.523 0.526 0.529 0.533 0.536 0.539 Printed 12/3/2025 Page 87

251202_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC NJ DEP 2-hr WQ Rainfall=1.25" Printed 12/3/2025 Page 88 Time span=0.00-72.00 hrs, dt=0.05 hrs, 1441 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment PR 1A-P: Runoff Area=13,167 sf 0.00% Impervious Runoff Depth=0.13" Flow Length=203' Tc=5.9 min CN=78 Runoff=0.11 cfs 0.003 af Subcatchment PR 1B-I: Runoff Area=36,906 sf 100.00% Impervious Runoff Depth=1.03" Flow Length=136' Tc=1.5 min CN=98 Runoff=2.63 cfs 0.073 af Subcatchment PR 1B-P: Runoff Area=77,195 sf 0.00% Impervious Runoff Depth=0.15" Flow Length=195' Tc=7.7 min CN=79 Runoff=0.65 cfs 0.023 af Subcatchment PR 2-P: Runoff Area=7,405 sf 0.00% Impervious Runoff Depth=0.10" Flow Length=84' Slope=0.0833 '/' Tc=4.6 min CN=76 Runoff=0.04 cfs 0.001 af Reach 10R: Inflow=2.66 cfs 0.096 af Outflow=2.66 cfs 0.096 af Reach DP1-PR: Inflow=0.11 cfs 0.003 af Outflow=0.11 cfs 0.003 af Reach DP2-PR: Inflow=0.04 cfs 0.001 af Outflow=0.04 cfs 0.001 af Pond BASIN: Peak Elev=15.89' Storage=0.071 af Inflow=2.66 cfs 0.096 af Discarded=0.24 cfs 0.096 af Primary=0.00 cfs 0.000 af Outflow=0.24 cfs 0.096 af Total Runoff Area = 3.092 ac Runoff Volume = 0.100 af Average Runoff Depth = 0.39" 72.60% Pervious = 2.244 ac 27.40% Impervious = 0.847 ac