V4 11 Stormwater Report Rev 3 1 26 2023

98 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Friday, 01 / 27 / 2023 Hyd. No. 19 <no description> Hydrograph type = Reservoir Peak discharge = 7.726 cfs Storm frequency = 100 yrs Time to peak = 12.05 hrs Time interval = 3 min Hyd. volume = 29,745 cuft Inflow hyd. No. = 18 - <no description> Max. Elevation = 421.99 ft Reservoir name = Basin #1A Max. Storage = 1,506 cuft Storage Indication method used. <no description> Q (cfs) Q (cfs) Hyd. No. 19 -- 100 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 Time (hrs) Hyd No. 19 Hyd No. 18 Total storage used = 1,506 cuft

99 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Friday, 01 / 27 / 2023 Hyd. No. 20 <no description> Hydrograph type = Combine Peak discharge = 86.61 cfs Storm frequency = 100 yrs Time to peak = 12.10 hrs Time interval = 3 min Hyd. volume = 408,320 cuft Inflow hyds. = 8, 11, 12, 14, 19 Contrib. drain. area = 0.000 ac <no description> Q (cfs) Q (cfs) Hyd. No. 20 -- 100 Year 90.00 90.00 80.00 80.00 70.00 70.00 60.00 60.00 50.00 50.00 40.00 40.00 30.00 30.00 20.00 20.00 10.00 10.00 0.00 0.00

10.00 0.00 0.00 0 3 6 9 12 15 18 21 24 27 Time (hrs) Hyd No. 20 Hyd No. 8 Hyd No. 11 Hyd No. 12 Hyd No. 14 Hyd No. 19

100 Hydraflow Rainfall Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Friday, 01 / 27 / 2023 Return Intensity-Duration-Frequency Equation Coefficients (FHA) Period (Yrs) B D E (N/A) 1 0.0000 0.0000 0.0000 -------- 2 69.8703 13.1000 0.8658 -------- 3 0.0000 0.0000 0.0000 -------- 5 79.2597 14.6000 0.8369 -------- 10 88.2351 15.5000 0.8279 -------- 25 102.6072 16.5000 0.8217 -------- 50 114.8193 17.2000 0.8199 -------- 100 127.1596 17.8000 0.8186 -------- File name: SampleFHA.idf Intensity = B / (Tc + D)^E Return Intensity Values (in/hr) Period (Yrs) 5 min 10 15 20 25 30 35 40 45 50 55 60 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2 5.69 4.61 3.89 3.38 2.99 2.69 2.44 2.24 2.07 1.93 1.81 1.70 3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 5 6.57 5.43 4.65 4.08 3.65 3.30 3.02 2.79 2.59 2.42 2.27 2.15 10 7.24 6.04 5.21 4.59 4.12 3.74 3.43 3.17 2.95 2.77 2.60 2.46 25 8.25 6.95 6.03

10 7.24 6.04 5.21 4.59 4.12 3.74 3.43 3.17 2.95 2.77 2.60 2.46 25 8.25 6.95 6.03 5.34 4.80 4.38 4.02 3.73 3.48 3.26 3.07 2.91 50 9.04 7.65 6.66 5.92 5.34 4.87 4.49 4.16 3.88 3.65 3.44 3.25 100 9.83 8.36 7.30 6.50 5.87 5.36 4.94 4.59 4.29 4.03 3.80 3.60 Tc = time in minutes. Values may exceed 60. \Petry Engineering Cad Projects\2019\19 0265 Daughters of Israel - West Orange\Civil\Current\Stormwater\Rainfall.pcp Rainfall Precipitation Table (in) Storm Distribution 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr SCS 24-hour 0.00 3.44 0.00 0.00 0.00 0.00 0.00 0.00 SCS 6-Hr 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Huff-1st 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Huff-2nd 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Huff-3rd 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Huff-4th 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Huff-Indy 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Custom 0.00 3.44 0.00 0.00 5.22 6.44 0.00 8.66

,.¢ o ELEVATION VS. TIME HYDOGRPAHS

Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Friday, 01 / 27 / 2023 Hyd. No. 19 <no description> Hydrograph type = Reservoir Peak discharge = 7.726 cfs Storm frequency = 100 yrs Time to peak = 12.05 hrs Time interval = 3 min Hyd. volume = 29,745 cuft Inflow hyd. No. = 18 - <no description> Max. Elevation = 421.99 ft Reservoir name = Basin #1A Max. Storage = 1,506 cuft Storage Indication method used. <no description> Elev (ft) Elev (ft) Hyd. No. 19 -- 100 Year 423.00 423.00 422.00 422.00 421.00 421.00 420.00 420.00 419.00 419.00 418.00 418.00 0 3 6 9 12 15 18 21 24 27 Time (hrs) 4. Basin #1A

Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Friday, 01 / 27 / 2023 Hyd. No. 14 Basin #1B Hydrograph type = Reservoir Peak discharge = 12.33 cfs Storm frequency = 100 yrs Time to peak = 12.10 hrs Time interval = 3 min Hyd. volume = 47,277 cuft Inflow hyd. No. = 13 - DA-1B (Roof) Max. Elevation = 407.97 ft Reservoir name = Basin #1B Max. Storage = 3,031 cuft Storage Indication method used. Basin #1B Elev (ft) Elev (ft) Hyd. No. 14 -- 100 Year 409.00 409.00 408.00 408.00 407.00 407.00 406.00 406.00 405.00 405.00 404.00 404.00 0 3 6 9 12 15 18 21 24 27 Time (hrs) 3. Basin #1B

Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Friday, 01 / 27 / 2023 Hyd. No. 12 Basin #2 Hydrograph type = Reservoir Peak discharge = 31.90 cfs Storm frequency = 100 yrs Time to peak = 12.15 hrs Time interval = 3 min Hyd. volume = 147,308 cuft Inflow hyd. No. = 9 - DA-3 Max. Elevation = 417.96 ft Reservoir name = Basin #2 Max. Storage = 13,372 cuft Storage Indication method used. Basin #2 Elev (ft) Elev (ft) Hyd. No. 12 -- 100 Year 419.00 419.00 418.00 418.00 417.00 417.00 416.00 416.00 415.00 415.00 414.00 414.00 0 3 6 9 12 15 18 21 24 27 Time (hrs) 1. Basin #2

Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Friday, 01 / 27 / 2023 Hyd. No. 11 Basin #3 Hydrograph type = Reservoir Peak discharge = 15.74 cfs Storm frequency = 100 yrs Time to peak = 12.20 hrs Time interval = 3 min Hyd. volume = 87,208 cuft Inflow hyd. No. = 10 - DA-4 Max. Elevation = 419.95 ft Reservoir name = Basin #3 Max. Storage = 10,462 cuft Storage Indication method used. Basin #3 Elev (ft) Elev (ft) Hyd. No. 11 -- 100 Year 421.00 421.00 420.00 420.00 419.00 419.00 418.00 418.00 417.00 417.00 416.00 416.00 0 3 6 9 12 15 18 21 24 27 Time (hrs) 2. Basin #3