2025 12 19 Stormwater Report Rev 1

26 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2025 Tuesday, 12 / 23 / 2025 Hyd. No. 1 DA-1 Pervious Hydrograph type = SCS Runoff Peak discharge = 8.338 cfs Storm frequency = 100 yrs Time to peak = 12.20 hrs Time interval = 6 min Hyd. volume = 36,465 cuft Drainage area = 1.590 ac Curve number = 80 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 12.60 min Total precip. = 9.18 in Distribution = Custom Storm duration = S:\Petry Engineering Cad Projects\2024\24-170 Shape factor - Baginski = 484 - Manor - West Orange DA-1 Pervious Q (cfs) Q (cfs) Hyd. No. 1 -- 100 Year 10.00 10.00 8.00 8.00 6.00 6.00 4.00 4.00 2.00 2.00 0.00 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26

0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No. 1

27 Precipitation Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2025 Tuesday, 12 / 23 / 2025 Hyd. No. 1 DA-1 Pervious Storm Frequency = 100 yrs Time interval = 6 min Total precip. = 9.1800 in Distribution = Custom Storm duration = S:\Petry Engineering Cad Projects\2024\24-170 - Baginski - Manor - West Orang Incremental Rainfall Precipitation Precip (in) Precip (in) Hyd. No. 1 : DA-1 Pervious - 100 Year 1.00 1.00 0.90 0.90 0.80 0.80 0.70 0.70 0.60 0.60 0.50 0.50 0.40 0.40 0.30 0.30 0.20 0.20 0.10 0.10 0.00 0.00 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0

0.00 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0 24.0 Time (hrs) Custom Design Storm -- S:\Petry Engineering Cad Projects\2024\24-170 - Baginski - Manor - West Orange\Civil\Curre

28 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2025 Tuesday, 12 / 23 / 2025 Hyd. No. 2 DA-1 Impervious Hydrograph type = SCS Runoff Peak discharge = 18.87 cfs Storm frequency = 100 yrs Time to peak = 12.20 hrs Time interval = 6 min Hyd. volume = 94,005 cuft Drainage area = 3.090 ac Curve number = 98 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 12.60 min Total precip. = 9.18 in Distribution = Custom Storm duration = S:\Petry Engineering Cad Projects\2024\24-170 Shape factor - Baginski = 484 - Manor - West Orange DA-1 Impervious Q (cfs) Q (cfs) Hyd. No. 2 -- 100 Year 21.00 21.00 18.00 18.00 15.00 15.00 12.00 12.00 9.00 9.00 6.00 6.00 3.00 3.00 0.00

6.00 3.00 3.00 0.00 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No. 2

29 Precipitation Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2025 Tuesday, 12 / 23 / 2025 Hyd. No. 2 DA-1 Impervious Storm Frequency = 100 yrs Time interval = 6 min Total precip. = 9.1800 in Distribution = Custom Storm duration = S:\Petry Engineering Cad Projects\2024\24-170 - Baginski - Manor - West Orang Incremental Rainfall Precipitation Precip (in) Precip (in) Hyd. No. 2 : DA-1 Impervious - 100 Year 1.00 1.00 0.90 0.90 0.80 0.80 0.70 0.70 0.60 0.60 0.50 0.50 0.40 0.40 0.30 0.30 0.20 0.20 0.10 0.10 0.00 0.00 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0

0.00 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0 24.0 Time (hrs) Custom Design Storm -- S:\Petry Engineering Cad Projects\2024\24-170 - Baginski - Manor - West Orange\Civil\Curre

30 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2025 Tuesday, 12 / 23 / 2025 Hyd. No. 3 DA-2 Pervious Hydrograph type = SCS Runoff Peak discharge = 0.734 cfs Storm frequency = 100 yrs Time to peak = 12.20 hrs Time interval = 6 min Hyd. volume = 3,211 cuft Drainage area = 0.140 ac Curve number = 80 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 13.70 min Total precip. = 9.18 in Distribution = Custom Storm duration = S:\Petry Engineering Cad Projects\2024\24-170 Shape factor - Baginski = 484 - Manor - West Orange DA-2 Pervious Q (cfs) Q (cfs) Hyd. No. 3 -- 100 Year 1.00 1.00 0.90 0.90 0.80 0.80 0.70 0.70 0.60 0.60 0.50 0.50 0.40 0.40 0.30

0.50 0.40 0.40 0.30 0.30 0.20 0.20 0.10 0.10 0.00 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Time (hrs) Hyd No. 3