V3 RESUBMISSION Stormwater Management Report Rev 2 Dated November 3 2022

............................... 71 Hydrograph No. 8, Combine, DA-2........................................................................................ 72 Hydrograph No. 9, Combine, DA-3........................................................................................ 73 Hydrograph No. 10, Combine, DA-4...................................................................................... 74 Hydrograph No. 11, Reservoir, Basin #3................................................................................ 75 Hydrograph No. 12, Reservoir, Basin #1A.............................................................................. 76 Hydrograph No. 13, Reservoir, Basin #2................................................................................ 77 Hydrograph No. 14, SCS Runoff, DA-1B (Roof).................................................................... 78 Precipitation Report........................................................................................................... 79 Hydrograph No. 15, Reservoir, Basin #1B............................................................................. 80 Hydrograph No. 16, Combine, <no description>.................................................................... 81 IDF Report.................................................................................................................. 82

1 Watershed Model Schematic Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 3 1 14 4 5 7 2 6 10 9 15 13 11 12 8 Legend Hyd. Origin Description 1 SCS Runoff DA-1A (Roof) 2 SCS Runoff DA-2 (Pervious) 16 3 SCS Runoff DA-2 (Impervious) 4 SCS Runoff DA-3 (Pervious) 5 SCS Runoff DA-3 (Impervious) 6 SCS Runoff DA-4 (Pervious) 7 SCS Runoff DA-4 (Impervious) 8 Combine DA-2 9 Combine DA-3 10 Combine DA-4 11 Reservoir Basin #3 12 Reservoir Basin #1A 13 Reservoir Basin #2 14 SCS Runoff DA-1B (Roof) 15 Reservoir Basin #1B 16 Combine <no description> Project: Proposed Conditions.gpw Wednesday, 11 / 2 / 2022

2 Hydrograph Return Period Recap Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Hyd. Hydrograph Inflow Peak Outflow (cfs) Hydrograph No. type hyd(s) Description (origin) 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr 1 SCS Runoff ------ ------- 3.212 ------- ------- 4.905 ------- ------- 8.166 DA-1A (Roof) 2 SCS Runoff ------ ------- 2.997 ------- ------- 6.814 ------- ------- 15.09 DA-2 (Pervious) 3 SCS Runoff ------ ------- 3.437 ------- ------- 5.250 ------- ------- 8.739 DA-2 (Impervious) 4 SCS Runoff ------ ------- 5.223 ------- ------- 11.88 ------- ------- 26.29 DA-3 (Pervious) 5 SCS Runoff ------ ------- 3.888 ------- ------- 5.938 ------- ------- 9.885 DA-3 (Impervious) 6 SCS Runoff ------ ------- 0.481 ------- ------- 3.743 ------- ------- 13.41 DA-4 (Pervious) 7 SCS Runoff ------ ------- 3.043 ------- ------- 4.647 ------- ------- 7.736 DA-4 (Impervious) 8 Combine 2, 3, ------- 6.176 ------- ------- 11.70 ------- ------- 23.34 DA-2 9 Combine 4, 5, ------- 8.718 ------- ------- 17.27 ------- ------- 35.49 DA-3 10 Combine 6, 7, ------- 3.173 ------- ------- 7.872 ------- ------- 20.32 DA-4 11 Reservoir 10 ------- 1.694 ------- ------- 5.580 ------- ------- 16.11 Basin #3 12 Reservoir 1 ------- 1.308 ------- ------- 3.723 ------- ------- 8.123 Basin #1A 13 Reservoir 9 ------- 4.882 ------- ------- 14.61 ------- ------- 31.02 Basin #2 14 SCS Runoff ------ ------- 4.931 ------- ------- 7.530 -------

------- 4.882 ------- ------- 14.61 ------- ------- 31.02 Basin #2 14 SCS Runoff ------ ------- 4.931 ------- ------- 7.530 ------- ------- 12.54 DA-1B (Roof) 15 Reservoir 14 ------- 2.451 ------- ------- 6.009 ------- ------- 12.46 Basin #1B 16 Combine 8, 11, 12, ------- 14.78 ------- ------- 39.73 ------- ------- 86.57 <no description> 13, 15 Proj. file: Proposed Conditions.gpw Wednesday, 11 / 2 / 2022

3 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 3.212 3 723 12,440 ------ ------ ------ DA-1A (Roof) 2 SCS Runoff 2.997 3 729 12,528 ------ ------ ------ DA-2 (Pervious) 3 SCS Runoff 3.437 3 723 13,313 ------ ------ ------ DA-2 (Impervious) 4 SCS Runoff 5.223 3 729 21,835 ------ ------ ------ DA-3 (Pervious) 5 SCS Runoff 3.888 3 723 15,059 ------ ------ ------ DA-3 (Impervious) 6 SCS Runoff 0.481 3 738 5,159 ------ ------ ------ DA-4 (Pervious) 7 SCS Runoff 3.043 3 723 11,786 ------ ------ ------ DA-4 (Impervious) 8 Combine 6.176 3 726 25,841 2, 3, ------ ------ DA-2 9 Combine 8.718 3 726 36,895 4, 5, ------ ------ DA-3 10 Combine 3.173 3 726 16,944 6, 7, ------ ------ DA-4 11 Reservoir 1.694 3 735 16,943 10 417.10 2,468 Basin #3 12 Reservoir 1.308 3 735 12,439 1 420.43 2,053 Basin #1A 13 Reservoir 4.882 3 738 36,893 9 415.64 5,555 Basin #2 14 SCS Runoff 4.931 3 723 19,097 ------ ------ ------ DA-1B (Roof) 15 Reservoir 2.451 3 732 19,096 14 406.53 2,981 Basin #1B 16 Combine 14.78 3 729 111,213 8, 11, 12, ------ ------ <no description> 13,

Basin #1B 16 Combine 14.78 3 729 111,213 8, 11, 12, ------ ------ <no description> 13, 15 Proposed Conditions.gpw Return Period: 2 Year Wednesday, 11 / 2 / 2022

4 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Hyd. No. 1 DA-1A (Roof) Hydrograph type = SCS Runoff Peak discharge = 3.212 cfs Storm frequency = 2 yrs Time to peak = 12.05 hrs Time interval = 3 min Hyd. volume = 12,440 cuft Drainage area = 1.140 ac Curve number = 98 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 6.00 min Total precip. = 3.44 in Distribution = Custom Storm duration = S:\Petry Engineering Cad Projects\2019\19 Shape factor 0265 Daughters = 484 of Israel - West Oran DA-1A (Roof) Q (cfs) Q (cfs) Hyd. No. 1 -- 2 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

5 Precipitation Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Hyd. No. 1 DA-1A (Roof) Storm Frequency = 2 yrs Time interval = 3 min Total precip. = 3.4400 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 (Roof) - 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 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0

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

6 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Hyd. No. 2 DA-2 (Pervious) Hydrograph type = SCS Runoff Peak discharge = 2.997 cfs Storm frequency = 2 yrs Time to peak = 12.15 hrs Time interval = 3 min Hyd. volume = 12,528 cuft Drainage area = 3.190 ac Curve number = 72* Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 10.10 min Total precip. = 3.44 in Distribution = Custom Storm duration = S:\Petry Engineering Cad Projects\2019\19 Shape factor 0265 Daughters = 484 of Israel - West Oran * Composite (Area/CN) = [(0.450 x 30) + (0.100 x 77) + (0.150 x 70) + (2.490 x 80)] / 3.190 DA-2 (Pervious) Q (cfs) Q (cfs) Hyd. No. 2 -- 2 Year 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. 2