2025 02 Drainage Statement Signed

NOTES: Project: Proposed Popeyes & IHOP Restaurant Computed By: DG 1) Design method used is Rational Method, unless otherwise noted. Job #: 1021-99-025 Checked By: MJB 2) Refer to Weighted Runoff Coefficient table Location: West Orange, NJ Date: 2/21/2025 for calculation of incremental areas and C values Design Storm: 25 Year SUBCATCHMENT TIME OF PIPE SECTION INCREMENTAL CUMULATIVE I PEAK RUNOFF PIPING INPUT PIPING DATA AREA CONCENTRATION Tc to Tc in Final Q to Q cum. Pipe Pipe Dia. Length Man. Slope FROM TO Area (Acres) "C" A x C Ac A x C (acres) Inlet Pipe Tc (In/Hr) Inlet for Pipe Capacity Velocity (In) (Ft) "n" (ft/ft) (min) (min.) (min) (CFS) (CFS) (cfs) (fps) Roof Rear Inlet #2 0.08 0.95 0.08 0.08 10.00 0.03 10.00 6.80 0.54 0.54 6 6.0 0.010 0.0100 0.73 3.72 Inlet #2 Inlet #3 0.05 0.70 0.04 0.12 10.00 0.03 10.03 6.80 0.27 0.82 12 15.0 0.013 0.0300 6.17 7.86 Inlet #3 Inlet #4 0.05 0.86 0.04 0.16 10.00 0.14 10.06 6.80

0.27 0.82 12 15.0 0.013 0.0300 6.17 7.86 Inlet #3 Inlet #4 0.05 0.86 0.04 0.16 10.00 0.14 10.06 6.80 0.27 1.09 12 64.0 0.013 0.0300 6.17 7.86 Inlet #4 Inlet #5 0.10 0.73 0.07 0.23 10.00 0.21 10.20 6.80 0.48 1.56 12 81.0 0.013 0.0200 5.04 6.42 Inlet #5 Inlet #6 0.06 0.69 0.04 0.27 10.00 0.37 10.41 6.80 0.27 1.84 12 144.0 0.013 0.0200 5.04 6.42 Roof Front Inlet #9 0.06 0.95 0.06 0.06 10.00 0.03 10.00 6.80 0.41 0.41 6 6.0 0.010 0.0092 0.70 3.57 Inlet #9 Inlet #10 0.02 0.79 0.02 0.08 10.00 0.04 10.03 6.80 0.14 0.54 12 18.0 0.013 0.0250 5.63 7.17 Inlet #10 Inlet #11 0.07 0.90 0.06 0.14 10.00 0.14 10.07 6.80 0.41 0.95 12 59.0 0.013 0.0252 5.65 7.20 Inlet #11 Inlet #12 0.05 0.75 0.04 0.18 10.00 0.24 10.21 6.80 0.27 1.22 12 111.0 0.013 0.0300 6.17 7.86 Inlet #12 Inlet #13 0.18 0.85 0.15 0.33 10.00 0.12 10.45 6.80 1.02 2.24 12 48.0 0.013 0.0200 5.04 6.42 Inlet #13 Inlet #6 0.02 0.91 0.02 0.35 10.00 0.07 10.57 6.68 0.13 2.34 12 26.0 0.013 0.0200 5.04 6.42 Inlet #6 Ex. Inlet 0.16 0.94 0.15 0.77 10.00 0.05 10.78 6.68 1.00 5.14 15 27.0 0.013 0.0300 11.18 9.11