Drainage Statement 07 2025 submission

NOTES: Project: Mavis Tire Supply, LLC Computed By: KED 1) Design method used is Rational Method, unless otherwise noted. Job #: 1956-24-04187 Checked By: CAM 2) Refer to Weighted Runoff Coefficient table Location: West Orange Township Date: 7/3/2025 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) Storm Str. 6 Prop. MH 1 0.12 0.81 0.10 0.23 6.00 0.09 6.12 7.70 0.77 1.77 12 38.0 0.013 0.0250

6 Prop. MH 1 0.12 0.81 0.10 0.23 6.00 0.09 6.12 7.70 0.77 1.77 12 38.0 0.013 0.0250 5.63 7.17 Storm Str. 5 Prop. MH 1 0.11 0.92 0.10 0.10 6.00 0.25 6.00 7.70 0.77 0.77 15 60.0 0.012 0.0050 4.95 4.04 Storm Str. 7 Prop. MH 1 0.06 0.68 0.04 0.04 6.00 0.14 6.00 7.70 0.31 0.31 15 35.0 0.012 0.0050 4.95 4.04 Prop. MH 1 Storm Str. 2 0.00 0.00 0.00 0.37 6.00 0.52 6.25 7.70 0.00 2.85 12 108.0 0.012 0.0050 2.73 3.48 Storm Str. 2 Storm Str. 3 0.01 0.95 0.01 0.38 6.00 0.10 6.77 7.59 0.08 2.88 15 15.0 0.012 0.0020 3.13 2.55 Stm Str. 1 & DA1 Storm Str. 3 0.18 0.69 0.12 0.12 6.00 0.26 6.00 7.70 0.92 0.92 15 63.0 0.012 0.0050 4.95 4.04 Storm Str. 3 Existing MH 0.00 0.35 0.00 0.51 6.00 0.26 6.87 7.59 0.00 3.87 15 97.0 0.013 0.0140 7.64 6.23 Roof Area Existing MH 0.16 0.95 0.15 0.15 6.00 0.45 6.00 7.70 1.16 1.16 12 93.0 0.012 0.0050 2.73 3.48 Prop. MH 2 End* 0.00 0.00 0.00 0.00 6.00 0.05 6.00 7.70 0.00 0.00 15 20.0 0.013 0.0140 7.64 6.23 Offsite Q** Storm Str. 6 0.16 0.80 0.13 0.13 6.00 0.12 6.00 7.70 1.00 1.00 6 30.0 0.014 0.0250 0.82 4.18 *This pipe sizing calculation assumes downstream pipe capacity is limited to the capacity of the

00 6 30.0 0.014 0.0250 0.82 4.18 *This pipe sizing calculation assumes downstream pipe capacity is limited to the capacity of the prior segment under existing conditions. **This flow has been calculated to provide the conservate flow generated from off-site conditons. (1.0 CFS)