Stormwater Management Report Feb 2026 resubmissionrcd 2 26 2026

NOTES: Project: Mavis Tire Supply, LLC Computed By: AJH 1) Design method used is Rational Method, unless otherwise noted. Job #: 1956-24-04187 Checked By: RR 2) Refer to Weighted Runoff Coefficient table Location: West Orange Township Date: 2/16/2026 for calculation of incremental areas and C values Design Storm: 25 yr SUBCATCHMENT TIME OF PIPE SECTION INCREMENTAL CUMULATIVE I PEAK RUNOFF PIPING INPUT PIPING DATA AREA CONCENTRATION Tc to Tc in Q cum. Pipe Pipe Final Tc Q to Inlet Dia. Length Man. Slope FROM TO Area (Acres) "C" A x C Ac A x C (acres) Inlet Pipe (In/Hr) for Pipe Capacity Velocity (min) (CFS) (In) (Ft) "n" (ft/ft) (min) (min.) (CFS) (cfs) (fps) EXIST. ROUND INLET PROP. MH #3 0.10 0.95 0.10 0.10 6.00 0.06 6.00 7.70 0.77 0.77 12 26.0 0.013 0.0255 5.69 7.25 PROP. INLET #7 PROP. INLET #6

0.10 0.10 6.00 0.06 6.00 7.70 0.77 0.77 12 26.0 0.013 0.0255 5.69 7.25 PROP. INLET #7 PROP. INLET #6 0.08 0.88 0.07 0.07 6.00 0.32 6.00 7.70 0.54 0.54 15 64.0 0.012 0.0035 4.14 3.38 PROP. INLET #6 PROP. MH #3 0.07 0.89 0.07 0.14 6.00 0.32 6.32 7.70 0.54 1.08 15 64.0 0.012 0.0035 4.14 3.38 PROP. MH #3 PROP. OCS #2 0.00 0.00 0.00 0.24 6.00 0.33 6.64 7.59 0.00 1.82 15 67.0 0.012 0.0035 4.14 3.38 PROP. OCS #2 EXIST. A-INLET 0.14 0.74 0.10 0.34 6.00 0.07 6.97 7.59 0.76 2.58 15 15.0 0.012 0.0035 4.14 3.38 EXIST. A-INLET EXIST. MANHOLE 0.01 0.35 0.00 0.34 6.00 0.24 7.04 7.48 0.00 2.54 15 97.0 0.012 0.0143 8.37 6.82 PROP. UG BASIN OCS EXIST. MANHOLE 0.14 0.95 0.13 0.13 6.00 0.07 6.00 7.70 1.00 1.00 15 15.0 0.012 0.0035 4.14 3.38