Stormwater Report 1

6 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Monday, 12 / 30 / 2024 Hyd. No. 2 DA-EX Impervious Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff Peak discharge = 7.590 cfs = 2 yrs Time to peak = 12.20 hrs = 6 min Hyd. volume = 36,568 cuft = 3.320 ac Curve number = 98 = 0.0 % Hydraulic length = 0 ft = User Time of conc. (Tc) = 13.60 min = 3.47 in Distribution = Custom = S:\Petry Engineering Cad Projects\2024\24-170 Shape factor - Baginski = 484 - Manor - West Orange DA-EX Impervious Q (cfs) Q (cfs) Hyd. No. 2 -- 2 Year 8.00 8.00 6.00 6.00 4.00 4.00 2.00 2.00 0.00 0.00 0 2 4 Hyd No. 2 6 8 10 12 14 16 18 20 22 24 26 Time (hrs)

7 Precipitation Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Monday, 12 / 30 / 2024 Hyd. No. 2 DA-EX Impervious Storm Frequency Total precip. Storm duration = 2 yrs Time interval = 6 min = 3.4700 in Distribution = Custom = S:\Petry Engineering Cad Projects\2024\24-170 - Baginski - Manor - West Orang Incremental Rainfall Precipitation Precip (in) Precip (in) Hyd. No. 2 : DA-EX Impervious - 2 Year 0.50 0.50 0.45 0.45 0.40 0.40 0.35 0.35 0.30 0.30 0.25 0.25 0.20 0.20 0.15 0.15 0.10 0.10 0.05 0.05 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 24.0 Time (hrs) Custom Design Storm -- S:\Petry Engineering Cad Projects\2024\24-170 - Baginski - Manor - West Orange\Civil\Curre

8 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Monday, 12 / 30 / 2024 Hyd. No. 3 <no description> Hydrograph type Storm frequency Time interval Inflow hyds. = Combine = 2 yrs = 6 min = 1, 2 Peak discharge Time to peak Hyd. volume Contrib. drain. area = 9.339 cfs = 12.20 hrs = 44,031 cuft = 4.680 ac <no description> Q (cfs) Q (cfs) Hyd. No. 3 -- 2 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 Hyd No. 3 6 8 10 Hyd No. 1 12 14 16 Hyd No. 2 18 20 22 24 26 Time (hrs)

9 Hydrograph Summary Report Hyd. Hydrograph No. type (origin) Peak flow (cfs) Time Time to interval Peak (min) (min) Hyd. volume (cuft) Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Inflow hyd(s) Maximum elevation (ft) Total strge used (cuft) Hydrograph Description 1 SCS Runoff 3.502 6 732 14,935 ------ ------ ------ DA-EX Pervious 2 SCS Runoff 11.85 6 732 58,103 ------ ------ ------ DA-EX Impervious 3 Combine 15.35 6 732 73,038 1, 2 ------ ------ <no description> Existing - Current Adjusted.gpw Return Period: 10 Year Monday, 12 / 30 / 2024

10 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Monday, 12 / 30 / 2024 Hyd. No. 1 DA-EX Pervious Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff Peak discharge = 3.502 cfs = 10 yrs Time to peak = 12.20 hrs = 6 min Hyd. volume = 14,935 cuft = 1.360 ac Curve number = 80 = 0.0 % Hydraulic length = 0 ft = User Time of conc. (Tc) = 13.60 min = 5.38 in Distribution = Custom = S:\Petry Engineering Cad Projects\2024\24-170 Shape factor - Baginski = 484 - Manor - West Orange DA-EX Pervious Q (cfs) Q (cfs) Hyd. No. 1 -- 10 Year 4.00 4.00 3.00 3.00 2.00 2.00 1.00 1.00 0.00 0.00 0 2 4 Hyd No. 1 6 8 10 12 14 16 18 20 22 24 26 Time (hrs)

11 Precipitation Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Monday, 12 / 30 / 2024 Hyd. No. 1 DA-EX Pervious Storm Frequency Total precip. Storm duration = 10 yrs Time interval = 6 min = 5.3800 in Distribution = Custom = S:\Petry Engineering Cad Projects\2024\24-170 - Baginski - Manor - West Orang Incremental Rainfall Precipitation Precip (in) Precip (in) Hyd. No. 1 : DA-EX Pervious - 10 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 24.0 Time (hrs) Custom Design Storm -- S:\Petry Engineering Cad Projects\2024\24-170 - Baginski - Manor - West Orange\Civil\Curre

12 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Monday, 12 / 30 / 2024 Hyd. No. 2 DA-EX Impervious Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff Peak discharge = 11.85 cfs = 10 yrs Time to peak = 12.20 hrs = 6 min Hyd. volume = 58,103 cuft = 3.320 ac Curve number = 98 = 0.0 % Hydraulic length = 0 ft = User Time of conc. (Tc) = 13.60 min = 5.38 in Distribution = Custom = S:\Petry Engineering Cad Projects\2024\24-170 Shape factor - Baginski = 484 - Manor - West Orange DA-EX Impervious Q (cfs) Q (cfs) Hyd. No. 2 -- 10 Year 12.00 12.00 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 Hyd No. 2 6 8 10 12 14 16 18 20 22 24 26 Time (hrs)

13 Precipitation Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Monday, 12 / 30 / 2024 Hyd. No. 2 DA-EX Impervious Storm Frequency Total precip. Storm duration = 10 yrs Time interval = 6 min = 5.3800 in Distribution = Custom = S:\Petry Engineering Cad Projects\2024\24-170 - Baginski - Manor - West Orang Incremental Rainfall Precipitation Precip (in) Precip (in) Hyd. No. 2 : DA-EX Impervious - 10 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 24.0 Time (hrs) Custom Design Storm -- S:\Petry Engineering Cad Projects\2024\24-170 - Baginski - Manor - West Orange\Civil\Curre

14 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Monday, 12 / 30 / 2024 Hyd. No. 3 <no description> Hydrograph type Storm frequency Time interval Inflow hyds. = Combine = 10 yrs = 6 min = 1, 2 Peak discharge Time to peak Hyd. volume Contrib. drain. area = 15.35 cfs = 12.20 hrs = 73,038 cuft = 4.680 ac <no description> Q (cfs) Q (cfs) Hyd. No. 3 -- 10 Year 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 0.00 0 2 4 Hyd No. 3 6 8 10 Hyd No. 1 12 14 16 Hyd No. 2 18 20 22 24 26 Time (hrs)

15 Hydrograph Summary Report Hyd. Hydrograph No. type (origin) Peak flow (cfs) Time Time to interval Peak (min) (min) Hyd. volume (cuft) Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Inflow hyd(s) Maximum elevation (ft) Total strge used (cuft) Hydrograph Description 1 SCS Runoff 7.132 6 732 31,190 ------ ------ ------ DA-EX Pervious 2 SCS Runoff 20.28 6 732 101,003 ------ ------ ------ DA-EX Impervious 3 Combine 27.41 6 732 132,192 1, 2 ------ ------ <no description> Existing - Current Adjusted.gpw Return Period: 100 Year Monday, 12 / 30 / 2024