Stormwater Management Report 03302026

24-223 DRAINAGE DESIGN-EXISTING-2026-03-30 NOAA 24-hr D 10-Year-2020 Rainfall=5.38", P2=3.47" Prepared by Jarmel Kizel Architects & Engnrs Printed 3/30/2026 HydroCAD® 10.20-6a s/n 12607 © 2024 HydroCAD Software Solutions LLC Page 24 Subcatchment E2-IMP: E2A IMPERVIOUS Hydrograph Runoff 0.85 0.79 cfs 0.8 0.75 NOAA 24-hr D 0.7 10-Year-2020 Rainfall=5.38" 0.65 P2=3.47" 0.6 0.55 Runoff Area=12,035 sf Runoff Volume=5,158 cf Flow (cfs) 0.5 0.45 Runoff Depth=5.14" 0.4 0.35 Flow Length=435' 0.3 Slope=0.0550 '/' 0.25 Tc=2.0 min 0.2 0.15 CN=98 0.1 0.05 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

.1 0.05 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Time (hours)