Stormwater Management Report 03302026

Table No. 1 Design Point #1 Storm Freq. Runoff Rates (cfs) Total Volume Runoff (cf) PRE POST PRE POST 2-Year(2020) 3.38 3.22 23,104 22,126 10-Year(2020) 5.73 5.54 39,586 38,343 100-Year(2020) 10.64 10.42 74,249 72,660 2-Year(2050) 4.16 3.99 28,336 27,260 10-Year(2050) 7.06 6.87 48,450 47,101 100-Year(2050) 13.86 13.63 96,150 94,401 Table No. 2 Design Point #2 Storm Freq. Runoff Rates (cfs) Total Volume Runoff (cf) PRE POST PRE POST 2-Year(2020) 0.61 0.52 3,939 3,361 10-Year(2020) 1.00 0.91 6,481 5,818 100-Year(2020) 1.79 1.71 11,675 10,992 2-Year(2050) 0.74 0.65 4,755 4,140 10-Year(2050) 1.21 1.12 7,822 7,141 100-Year(2050) 2.28 2.22 14,912 14,261 Table No. 3 Overall Site (Total) Storm Freq. Runoff Rates (cfs) Total Volume Runoff (cf) PRE POST PRE POST 2-Year(2020) 3.99 3.74 27,043 25,487 10-Year(2020) 6.73 6.45 46,067 44,160 100-Year(2020) 12.42 12.13 85,924 85,652 2-Year(2050) 4.90 4.64 33,091 31,400 10-Year(2050) 8.26 7.98 56,272 54,242 100-Year(2050) 16.13 15.85 111,062 108,662 7