V4 11 Stormwater Report Rev 3 1 26 2023

29 Precipitation Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Hyd. No. 15 DA-6 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. 15 : DA-6 - 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

30 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Hyd. No. 16 To Basin #1 Hydrograph type = Combine Peak discharge = 6.280 cfs Storm frequency = 2 yrs Time to peak = 12.10 hrs Time interval = 3 min Hyd. volume = 28,410 cuft Inflow hyds. = 3, 4 Contrib. drain. area = 0.240 ac To Basin #1 Q (cfs) Q (cfs) Hyd. No. 16 -- 2 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 3 6 9 12 15 18 21 24 27 Time (hrs) Hyd No. 16 Hyd No. 3 Hyd No. 4

31 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Hyd. No. 17 Basin #1 Hydrograph type = Reservoir Peak discharge = 1.473 cfs Storm frequency = 2 yrs Time to peak = 12.75 hrs Time interval = 3 min Hyd. volume = 28,403 cuft Inflow hyd. No. = 16 - To Basin #1 Max. Elevation = 419.06 ft Reservoir name = Basin #1 Max. Storage = 10,296 cuft Storage Indication method used. Basin #1 Q (cfs) Q (cfs) Hyd. No. 17 -- 2 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 3 6 9 12 15 18 21 24 27 30 33

0.00 0 3 6 9 12 15 18 21 24 27 30 33 Time (hrs) Hyd No. 17 Hyd No. 16 Total storage used = 10,296 cuft

32 Pond Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Pond No. 1 - Basin #1 Pond Data Contours -User-defined contour areas. Average end area method used for volume calculation. Begining Elevation = 415.00 ft Stage / Storage Table Stage (ft) Elevation (ft) Contour area (sqft) Incr. Storage (cuft) Total storage (cuft) 0.00 415.00 1,040 0 0 1.00 416.00 1,900 1,470 1,470 2.00 417.00 2,550 2,225 3,695 3.00 418.00 3,170 2,860 6,555 4.00 419.00 3,800 3,485 10,040 5.00 420.00 4,800 4,300 14,340 Culvert / Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise (in) = 3.00 0.00 0.00 0.00 Crest Len (ft) = 16.00 0.00 0.00 0.00 Span (in) = 3.00 0.00 0.00 0.00 Crest El. (ft) = 419.00 0.00 0.00 0.00 No. Barrels = 1 0 0 0 Weir Coeff. = 3.33 3.33 3.33 3.33 Invert El. (ft) = 415.00 0.00 0.00 0.00 Weir Type = Rect --- --- --- Length (ft) = 0.00 0.00 0.00 0.00

0.00 Weir Type = Rect --- --- --- Length (ft) = 0.00 0.00 0.00 0.00 Multi-Stage = No No No No Slope (%) = 0.00 0.00 0.00 n/a N-Value = .013 .013 .013 n/a Orifice Coeff. = 0.60 0.60 0.60 0.60 Exfil.(in/hr) = 0.000 (by Contour) Multi-Stage = n/a No No No TW Elev. (ft) = 0.00 Note: Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for orifice conditions (ic) and submergence (s). Stage / Storage / Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0.00 0 415.00 0.00 --- --- --- 0.00 --- --- --- --- --- 0.000 1.00 1,470 416.00 0.22 ic --- --- --- 0.00 --- --- --- --- --- 0.221 2.00 3,695 417.00 0.32 ic --- --- --- 0.00 --- --- --- --- --- 0.324 3.00 6,555 418.00 0.40 ic --- --- --- 0.00 --- --- --- --- --- 0.401 4.00 10,040 419.00 0.47 ic --- --- --- 0.00 --- --- --- --- --- 0.465 5.00 14,340 420.00 0.52 ic --- --- ---

0.00 --- --- --- --- --- 0.465 5.00 14,340 420.00 0.52 ic --- --- --- 53.28 --- --- --- --- --- 53.80

33 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Hyd. No. 18 Combined - SS Southern Driveway Hydrograph type = Combine Peak discharge = 7.343 cfs Storm frequency = 2 yrs Time to peak = 12.10 hrs Time interval = 3 min Hyd. volume = 57,703 cuft Inflow hyds. = 8, 17 Contrib. drain. area = 0.000 ac Combined - SS Southern Driveway Q (cfs) Q (cfs) Hyd. No. 18 -- 2 Year 8.00 8.00 6.00 6.00 4.00 4.00 2.00 2.00 0.00 0.00 0 3 6 9 12 15 18 21 24 27 30 Time (hrs) Hyd No. 18 Hyd No. 8 Hyd No. 17

34 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Hyd. No. 19 Total Offsite Hydrograph type = Combine Peak discharge = 20.08 cfs Storm frequency = 2 yrs Time to peak = 12.05 hrs Time interval = 3 min Hyd. volume = 109,031 cuft Inflow hyds. = 5, 11, 14, 15, 18 Contrib. drain. area = 4.030 ac Total Offsite Q (cfs) Q (cfs) Hyd. No. 19 -- 2 Year 21.00 21.00 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 3 6 9 12 15 18 21 24 27 30 Time (hrs) Hyd No. 19