V3 RESUBMISSION Stormwater Management Report Rev 2 Dated November 3 2022

................................................... 57 Precipitation Report........................................................................................................... 58 Hydrograph No. 14, Combine, DA-5...................................................................................... 59 Hydrograph No. 15, SCS Runoff, DA-6.................................................................................. 60 Precipitation Report........................................................................................................... 61 Hydrograph No. 16, Combine, To Basin #1............................................................................ 62 Hydrograph No. 17, Reservoir, Basin #1................................................................................ 63 Hydrograph No. 18, Combine, Combined - SS Southern Driveway....................................... 64 Hydrograph No. 19, Combine, Total Offsite............................................................................ 65 100 - Year Summary Report....................................................................................................................... 66 Hydrograph Reports................................................................................................................. 67 Hydrograph No. 1, SCS Runoff, DA-1A (Impervious)............................................................. 67 Precipitation Report........................................................................................................... 68 Hydrograph No. 2, SCS Runoff, DA-1A (Pervious)................................................................ 69 Precipitation Report........................................................................................................... 70 Hydrograph No. 3, Combine, DA-1A...................................................................................... 71 Hydrograph No. 4, SCS Runoff, DA-1B................................................................................. 72 Precipitation Report........................................................................................................... 73 Hydrograph No. 5, SCS Runoff,

...................... 72 Precipitation Report........................................................................................................... 73 Hydrograph No. 5, SCS Runoff, DA-2.................................................................................... 74 Precipitation Report........................................................................................................... 75 Hydrograph No. 6, SCS Runoff, DA-3 (Impervious)............................................................... 76 Precipitation Report........................................................................................................... 77 Hydrograph No. 7, SCS Runoff, DA-3 (Pervious).................................................................. 78 Precipitation Report........................................................................................................... 79 Hydrograph No. 8, Combine, DA-3........................................................................................ 80 Hydrograph No. 9, SCS Runoff, DA-4 (Impervious)............................................................... 81 Precipitation Report........................................................................................................... 82 Hydrograph No. 10, SCS Runoff, DA-4 (Pervious)................................................................ 83 Precipitation Report........................................................................................................... 84 Hydrograph No. 11, Combine, DA-4....................................................................................... 85 Hydrograph No. 12, SCS Runoff, DA-5 (Impervious)............................................................. 86 Precipitation Report........................................................................................................... 87 Hydrograph No. 13, SCS Runoff, DA-5 (Pervious)................................................................ 88 Precipitation Report........................................................................................................... 89

Contents continued... Existing Conditions.gpw Hydrograph No. 14, Combine, DA-5...................................................................................... 90 Hydrograph No. 15, SCS Runoff, DA-6.................................................................................. 91 Precipitation Report........................................................................................................... 92 Hydrograph No. 16, Combine, To Basin #1............................................................................ 93 Hydrograph No. 17, Reservoir, Basin #1................................................................................ 94 Hydrograph No. 18, Combine, Combined - SS Southern Driveway....................................... 95 Hydrograph No. 19, Combine, Total Offsite............................................................................ 96 IDF Report.................................................................................................................. 97

1 Watershed Model Schematic Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 1 2 4 6 7 5 9 10 12 13 15 11 14 8 3 16 17 18 Legend Hyd. Origin Description 1 SCS Runoff DA-1A (Impervious) 2 SCS Runoff DA-1A (Pervious) 3 Combine DA-1A 4 SCS Runoff DA-1B 5 SCS Runoff DA-2 6 SCS Runoff DA-3 (Impervious) 7 SCS Runoff DA-3 (Pervious) 8 Combine DA-3 9 SCS Runoff DA-4 (Impervious) 10 SCS Runoff DA-4 (Pervious) 11 Combine DA-4 12 SCS Runoff DA-5 (Impervious) 13 SCS Runoff DA-5 (Pervious) 19 14 Combine DA-5 15 SCS Runoff DA-6 16 Combine To Basin #1 17 Reservoir Basin #1 18 Combine Combined - SS Southern Driveway 19 Combine Total Offsite Project: Existing 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 ------ ------- 2.479 ------- ------- 3.787 4.680 ------- 6.303 DA-1A (Impervious) 2 SCS Runoff ------ ------- 4.032 ------- ------- 10.61 15.73 ------- 25.69 DA-1A (Pervious) 3 Combine 1, 2 ------- 6.121 ------- ------- 13.83 19.77 ------- 31.25 DA-1A 4 SCS Runoff ------ ------- 0.172 ------- ------- 0.437 0.642 ------- 1.038 DA-1B 5 SCS Runoff ------ ------- 0.429 ------- ------- 1.092 1.604 ------- 2.594 DA-2 6 SCS Runoff ------ ------- 5.917 ------- ------- 9.036 11.17 ------- 15.04 DA-3 (Impervious) 7 SCS Runoff ------ ------- 1.361 ------- ------- 3.872 5.862 ------- 9.775 DA-3 (Pervious) 8 Combine 6, 7 ------- 6.988 ------- ------- 12.47 16.50 ------- 24.15 DA-3 9 SCS Runoff ------ ------- 0.085 ------- ------- 0.129 0.160 ------- 0.215 DA-4 (Impervious) 10 SCS Runoff ------ ------- 1.365 ------- ------- 2.996 4.203 ------- 6.501 DA-4 (Pervious) 11 Combine 9, 10 ------- 1.447 ------- ------- 3.122 4.358 ------- 6.716 DA-4 12 SCS Runoff ------ ------- 1.521 ------- ------- 2.324 2.872 ------- 3.868 DA-5 (Impervious) 13 SCS Runoff ------ ------- 0.039 ------- ------- 0.797 2.078 ------- 5.043 DA-5 (Pervious) 14 Combine 12, 13 ------- 1.521 ------- ------- 2.844 4.614 ------- 8.458

------- ------- 0.797 2.078 ------- 5.043 DA-5 (Pervious) 14 Combine 12, 13 ------- 1.521 ------- ------- 2.844 4.614 ------- 8.458 DA-5 15 SCS Runoff ------ ------- 9.664 ------- ------- 14.76 18.24 ------- 24.57 DA-6 16 Combine 3, 4, ------- 6.280 ------- ------- 14.25 20.39 ------- 32.27 To Basin #1 17 Reservoir 16 ------- 1.473 ------- ------- 14.01 20.15 ------- 31.90 Basin #1 18 Combine 8, 17 ------- 7.343 ------- ------- 24.43 35.85 ------- 55.19 Combined - SS Southern Driveway 19 Combine 5, 11, 14, ------- 20.08 ------- ------- 45.76 64.11 ------- 96.75 Total Offsite 15, 18 Proj. file: Existing 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 2.479 3 723 9,603 ------ ------ ------ DA-1A (Impervious) 2 SCS Runoff 4.032 3 729 18,052 ------ ------ ------ DA-1A (Pervious) 3 Combine 6.121 3 726 27,655 1, 2 ------ ------ DA-1A 4 SCS Runoff 0.172 3 729 755 ------ ------ ------ DA-1B 5 SCS Runoff 0.429 3 729 1,888 ------ ------ ------ DA-2 6 SCS Runoff 5.917 3 723 22,917 ------ ------ ------ DA-3 (Impervious) 7 SCS Runoff 1.361 3 729 6,384 ------ ------ ------ DA-3 (Pervious) 8 Combine 6.988 3 726 29,300 6, 7 ------ ------ DA-3 9 SCS Runoff 0.085 3 723 327 ------ ------ ------ DA-4 (Impervious) 10 SCS Runoff 1.365 3 726 4,731 ------ ------ ------ DA-4 (Pervious) 11 Combine 1.447 3 726 5,058 9, 10 ------ ------ DA-4 12 SCS Runoff 1.521 3 723 5,893 ------ ------ ------ DA-5 (Impervious) 13 SCS Runoff 0.039 3 795 1,059 ------ ------ ------ DA-5 (Pervious) 14 Combine 1.521 3 723 6,952 12, 13 ------ ------ DA-5 15 SCS Runoff 9.664 3 723 37,430 ------ ------ ------ DA-6 16 Combine 6.280 3 726 28,410 3, 4, ------ ------ To Basin #1 17 Reservoir 1.473 3 765 28,403 16

DA-6 16 Combine 6.280 3 726 28,410 3, 4, ------ ------ To Basin #1 17 Reservoir 1.473 3 765 28,403 16 419.06 10,296 Basin #1 18 Combine 7.343 3 726 57,703 8, 17 ------ ------ Combined - SS Southern Driveway 19 Combine 20.08 3 723 109,031 5, 11, 14, ------ ------ Total Offsite 15, 18 Existing 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 (Impervious) Hydrograph type = SCS Runoff Peak discharge = 2.479 cfs Storm frequency = 2 yrs Time to peak = 12.05 hrs Time interval = 3 min Hyd. volume = 9,603 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. = 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 (Impervious) Q (cfs) Q (cfs) Hyd. No. 1 -- 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. 1

5 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 = 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 (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 2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0 22.5 25.0