Stormwater Management Report 03302026

24-223 DRAINAGE DESIGN-EXISTING-2026-03-30 NOAA 24-hr D 2-Year-2050 Rainfall=4.09", P2=4.09" Prepared by Jarmel Kizel Architects & Engnrs Printed 3/30/2026 HydroCAD® 10.20-6a s/n 12607 © 2024 HydroCAD Software Solutions LLC Page 56 Subcatchment E2-IMP: E2A IMPERVIOUS Hydrograph 0.65 Runoff 0.60 cfs 0.6 NOAA 24-hr D 0.55 2-Year-2050 Rainfall=4.09" 0.5 P2=4.09" 0.45 Runoff Area=12,035 sf 0.4 Runoff Volume=3,866 cf Flow (cfs) 0.35 Runoff Depth=3.85" 0.3 Flow Length=435' 0.25 Slope=0.0550 '/' 0.2 Tc=1.9 min 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

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)