V4 11 Stormwater Report Rev 3 1 26 2023

66 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 6.303 3 723 25,215 ------ ------ ------ DA-1A (Impervious) 2 SCS Runoff 25.69 3 729 103,346 ------ ------ ------ DA-1A (Pervious) 3 Combine 31.25 3 726 128,561 1, 2 ------ ------ DA-1A 4 SCS Runoff 1.038 3 729 4,178 ------ ------ ------ DA-1B 5 SCS Runoff 2.594 3 729 10,444 ------ ------ ------ DA-2 6 SCS Runoff 15.04 3 723 60,173 ------ ------ ------ DA-3 (Impervious) 7 SCS Runoff 9.775 3 729 39,276 ------ ------ ------ DA-3 (Pervious) 8 Combine 24.15 3 726 99,448 6, 7 ------ ------ DA-3 9 SCS Runoff 0.215 3 723 860 ------ ------ ------ DA-4 (Impervious) 10 SCS Runoff 6.501 3 723 22,416 ------ ------ ------ DA-4 (Pervious) 11 Combine 6.716 3 723 23,275 9, 10 ------ ------ DA-4 12 SCS Runoff 3.868 3 723 15,473 ------ ------ ------ DA-5 (Impervious) 13 SCS Runoff 5.043 3 729 21,812 ------ ------ ------ DA-5 (Pervious) 14 Combine 8.458 3 726 37,285 12, 13 ------ ------ DA-5 15 SCS Runoff 24.57 3 723 98,282 ------ ------ ------ DA-6 16 Combine 32.27 3 726 132,738 3, 4, ------ ------ To Basin #1 17 Reservoir 31.90 3 729 132,731 16

DA-6 16 Combine 32.27 3 726 132,738 3, 4, ------ ------ To Basin #1 17 Reservoir 31.90 3 729 132,731 16 419.70 13,062 Basin #1 18 Combine 55.19 3 726 232,179 8, 17 ------ ------ Combined - SS Southern Driveway 19 Combine 96.75 3 726 401,465 5, 11, 14, ------ ------ Total Offsite 15, 18 Existing Conditions.gpw Return Period: 100 Year Wednesday, 11 / 2 / 2022

67 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 = 6.303 cfs Storm frequency = 100 yrs Time to peak = 12.05 hrs Time interval = 3 min Hyd. volume = 25,215 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. = 8.66 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 -- 100 Year 7.00 7.00 6.00 6.00 5.00 5.00 4.00 4.00 3.00 3.00 2.00 2.00 1.00 1.00 0.00 0.00 0

1.00 0.00 0.00 0 3 6 9 12 15 18 21 24 27 Time (hrs) Hyd No. 1

68 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 = 100 yrs Time interval = 3 min Total precip. = 8.6600 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) - 100 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

69 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 = 25.69 cfs Storm frequency = 100 yrs Time to peak = 12.15 hrs Time interval = 3 min Hyd. volume = 103,346 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. = 8.66 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 -- 100 Year 28.00 28.00 24.00 24.00 20.00 20.00 16.00 16.00 12.00 12.00 8.00

12.00 8.00 8.00 4.00 4.00 0.00 0.00 0 3 6 9 12 15 18 21 24 27 Time (hrs) Hyd No. 2

70 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 = 100 yrs Time interval = 3 min Total precip. = 8.6600 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) - 100 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