2025 12 19 Stormwater Report Rev 1

STORM SEWER COMPUTATIONS RATIONAL METHOD - (Q=CIA) 25 YR. STORM PIPE SEGMENT Pipe Travel Time(min) Pipe/Box Length (FT.) Capacity (FULL) (cfs) Velocity (Design) (fps) I-Rainfall Int. (in./hr) Qp-Peak Runoff (cfs) Qp-Peak Runoff (cfs) Pipe/Box Size (IN.) AxC-Incremental C-Runoff Coef. A-Incremental (Cumulative)

(Cumulative) Tc (MIN.) Slope (%) FROM TO Type "B" #5-2 Type "B" #5-1 0.08 0.99 0.08 6.0 5.80 0.46 0.46 72 1.0% 15" HDPE 8.42 6.86 0.17 Type "B" #5-1 Type "B" #4-1 0.05 0.99 0.05 6.0 5.80 0.29 0.75 118 1.0% 15" HDPE 8.42 6.86 0.29 Type "B" #4-3 Type "B" #4-2 0.22 0.99 0.22 6.0 5.80 1.26 1.26 62 1.0% 15" HDPE 8.42 6.86 0.15 Type "B" #4-2 Type "B" #4-1 0.34 0.99 0.34 6.0 5.80 1.95 3.22 36 1.0% 15" HDPE 8.42 6.86 0.09 Type "B" #4-1 MH #1-3 0.15 0.99 0.15 6.0 5.80 0.86 4.82 24 1.0% 15" HDPE 8.42 6.86 0.06 Type "B" #3-2 Type "B" #3-1 0.03 0.99 0.03 6.0 5.80 0.17 0.17 24 1.0% 15" HDPE 8.42 6.86 0.06 Type "B" #3-1 Type "B" #2-2 0.03 0.99 0.03 6.0 5.80

.0% 15" HDPE 8.42 6.86 0.06 Type "B" #3-1 Type "B" #2-2 0.03 0.99 0.03 6.0 5.80 0.17 0.34 62 1.0% 15" HDPE 8.42 6.86 0.15 Courtyard Type "B" #2-3 0.42 0.99 0.42 6.0 5.80 2.41 2.41 67 1.0% 15" HDPE 8.42 6.86 0.16 Type "B" #2-3 Type "B" #2-2 0.02 0.99 0.02 6.0 5.80 0.11 2.53 24 1.0% 15" HDPE 8.42 6.86 0.06 Type "B" #2-2 Type "B" #2-1 0.02 0.99 0.02 6.0 5.80 0.11 2.99 18 1.0% 15" HDPE 8.42 6.86 0.04 Type "B" #2-1 Type "B" #1-4 0.18 0.99 0.18 6.0 5.80 1.03 4.02 82 1.0% 15" HDPE 8.42 6.86 0.20 Type "B" #1-6 Type "B" #1-5 0.32 0.99 0.32 6.0 5.80 1.84 1.84 63 1.0% 15" HDPE 8.42 6.86 0.15 Walkways Type "B" #1-5 0.02 0.99 0.02 6.0 5.80 0.11 1.95 82 1.0% 15" HDPE 8.42 6.86 0.20 Type "B" #1-5 Type "B" #1-4 0.13 0.99 0.13 6.0 5.80 0.75 2.70 57 1.0% 15" HDPE

0.99 0.13 6.0 5.80 0.75 2.70 57 1.0% 15" HDPE 8.42 6.86 0.14 Type "B" #1-4 MH #1-3 0.34 0.99 0.34 6.0 5.80 1.95 8.67 77 1.5% 15" HDPE 10.31 8.40 0.15 MH #1-3 Type "B" #1-2A 6.0 5.80 0.00 13.49 155 4.0% 15" HDPE 16.84 13.72 0.19 Type "B" #1-2A Type "B" #1-2 0.13 0.99 0.13 6.0 5.80 0.75 14.24 155 4.0% 15" HDPE 16.84 13.72 0.19 Type "B" #1-2 Type "B" #1-1 0.06 0.99 0.06 6.0 5.80 0.34 13.84 96 2.0% 18" HDPE 17.60 9.96 0.16