2023 06 Drainage Statement

NOTES: Project: Proposed Popeyes & Fast Food Restaurant Computed By: DG 1) Design method used is Rational Method, unless otherwise noted. Job #: 1021-99-025 Checked By: MB 2) Refer to Weighted Runoff Coefficient table Location: West Orange, NJ Date: 7/6/2023 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) Inlet A-112 Inlet A-111 0.15 0.80 0.12 0.12 10.00 0.21 10.00 6.80 0.82 0.82 12 93.0 0.013 0.0268 5.83 7.43 Inlet A-111 Inlet A-110 0.11 0.88 0.10 0.22 10.00 0.07 10.21 6.80 0.68 1.50 12 55.0 0.013 0.0813 10.15 12.93 Sonic Roof Inlet A-140 0.03 0.95 0.03

0.22 10.00 0.07 10.21 6.80 0.68 1.50 12 55.0 0.013 0.0813 10.15 12.93 Sonic Roof Inlet A-140 0.03 0.95 0.03 0.03 10.00 0.10 10.00 6.80 0.20 0.20 6 55.0 0.010 0.0576 1.75 8.92 Popeyes Roof Inlet A-131 0.06 0.95 0.06 0.06 10.00 0.21 10.00 6.80 0.41 0.41 6 46.0 0.010 0.0100 0.73 3.72 Inlet A-131 Inlet A-140 0.08 0.67 0.05 0.11 10.00 0.21 10.21 6.80 0.34 0.75 12 60.0 0.013 0.0112 3.77 4.80 Inlet A-140 Manhole A-130 0.23 0.72 0.17 0.31 10.00 0.19 10.42 6.80 1.16 2.11 12 53.0 0.013 0.0100 3.56 4.54 Manhole A-130 Inlet A-120 0.00 0.00 0.00 0.31 10.00 0.33 10.61 6.68 0.00 2.07 12 91.0 0.013 0.0100 3.56 4.54 Inlet A-120 Inlet A-110 0.19 0.75 0.14 0.45 10.00 0.30 10.94 6.68 0.94 3.01 12 118.0 0.013 0.0202 5.06 6.45 Inlet A-110 Existing Inlet 0.12 0.94 0.11 0.78 10.00 0.06 11.24 6.56 0.72 5.12 15 39.0 0.013 0.0459 13.83 11.28