V4 11 Stormwater Report Rev 3 1 26 2023

27 30 Time (hrs) Hyd No. 19 Hyd No. 5 Hyd No. 11 Hyd No. 14 Hyd No. 15 Hyd No. 18

35 Hydrograph Summary Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph No. type flow interval Peak volume hyd(s) elevation strge used Description (origin) (cfs) (min) (min) (cuft) (ft) (cuft) 1 SCS Runoff 3.787 3 723 14,922 ------ ------ ------ DA-1A (Impervious) 2 SCS Runoff 10.61 3 729 43,282 ------ ------ ------ DA-1A (Pervious) 3 Combine 13.83 3 726 58,204 1, 2 ------ ------ DA-1A 4 SCS Runoff 0.437 3 729 1,775 ------ ------ ------ DA-1B 5 SCS Runoff 1.092 3 729 4,438 ------ ------ ------ DA-2 6 SCS Runoff 9.036 3 723 35,610 ------ ------ ------ DA-3 (Impervious) 7 SCS Runoff 3.872 3 729 15,957 ------ ------ ------ DA-3 (Pervious) 8 Combine 12.47 3 726 51,567 6, 7 ------ ------ DA-3 9 SCS Runoff 0.129 3 723 509 ------ ------ ------ DA-4 (Impervious) 10 SCS Runoff 2.996 3 726 10,189 ------ ------ ------ DA-4 (Pervious) 11 Combine 3.122 3 726 10,698 9, 10 ------ ------ DA-4 12 SCS Runoff 2.324 3 723 9,157 ------ ------ ------ DA-5 (Impervious) 13 SCS Runoff 0.797 3 732 5,797 ------ ------ ------ DA-5 (Pervious) 14 Combine 2.844 3 726 14,954 12, 13 ------ ------ DA-5 15 SCS Runoff 14.76 3 723 58,163 ------ ------ ------ DA-6 16 Combine 14.25 3 726 59,979 3, 4, ------ ------ To Basin #1 17 Reservoir 14.01 3 729 59,972 16

DA-6 16 Combine 14.25 3 726 59,979 3, 4, ------ ------ To Basin #1 17 Reservoir 14.01 3 729 59,972 16 419.40 11,764 Basin #1 18 Combine 24.43 3 729 111,539 8, 17 ------ ------ Combined - SS Southern Driveway 19 Combine 45.76 3 726 199,793 5, 11, 14, ------ ------ Total Offsite 15, 18 Existing Conditions.gpw Return Period: 10 Year Wednesday, 11 / 2 / 2022

36 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Hyd. No. 1 DA-1A (Impervious) Hydrograph type = SCS Runoff Peak discharge = 3.787 cfs Storm frequency = 10 yrs Time to peak = 12.05 hrs Time interval = 3 min Hyd. volume = 14,922 cuft Drainage area = 0.880 ac Curve number = 98 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 5.22 in Distribution = Custom Storm duration = S:\Petry Engineering Cad Projects\2019\19 Shape factor 0265 Daughters = 484 of Israel - West Oran DA-1A (Impervious) 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 3 6 9 12 15 18 21 24 27 Time (hrs) Hyd No. 1

37 Precipitation Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Hyd. No. 1 DA-1A (Impervious) Storm Frequency = 10 yrs Time interval = 3 min Total precip. = 5.2200 in Distribution = Custom Storm duration = S:\Petry Engineering Cad Projects\2019\19 0265 Daughters of Israel - West Ora Incremental Rainfall Precipitation Precip (in) Precip (in) Hyd. No. 1 : DA-1A (Impervious) - 10 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 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0

0.00 0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0 Time (hrs) Custom Design Storm -- S:\Petry Engineering Cad Projects\2019\19 0265 Daughters of Israel - West Orange\Civil\Cur

38 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Hyd. No. 2 DA-1A (Pervious) Hydrograph type = SCS Runoff Peak discharge = 10.61 cfs Storm frequency = 10 yrs Time to peak = 12.15 hrs Time interval = 3 min Hyd. volume = 43,282 cuft Drainage area = 6.090 ac Curve number = 67* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 14.30 min Total precip. = 5.22 in Distribution = Custom Storm duration = S:\Petry Engineering Cad Projects\2019\19 Shape factor 0265 Daughters = 484 of Israel - West Oran * Composite (Area/CN) = [(0.500 x 30) + (4.740 x 70) + (0.280 x 77) + (0.010 x 80) + (0.560 x 74)] / 6.090 DA-1A (Pervious) 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

4.00 2.00 2.00 0.00 0.00 0 3 6 9 12 15 18 21 24 27 Time (hrs) Hyd No. 2

39 Precipitation Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Hyd. No. 2 DA-1A (Pervious) Storm Frequency = 10 yrs Time interval = 3 min Total precip. = 5.2200 in Distribution = Custom Storm duration = S:\Petry Engineering Cad Projects\2019\19 0265 Daughters of Israel - West Ora Incremental Rainfall Precipitation Precip (in) Precip (in) Hyd. No. 2 : DA-1A (Pervious) - 10 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 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0

0.00 0.0 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0 Time (hrs) Custom Design Storm -- S:\Petry Engineering Cad Projects\2019\19 0265 Daughters of Israel - West Orange\Civil\Cur