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 28 Subcatchment E2B-IMP: E2B IMPERVIOUS Hydrograph Runoff 0.085 0.08 cfs 0.08 0.075 NOAA 24-hr D 0.07 10-Year-2020 Rainfall=5.38" 0.065 P2=3.47" 0.06 0.055 Runoff Area=1,202 sf 0.05 Runoff Volume=515 cf Flow (cfs) 0.045 Runoff Depth=5.14" 0.04 0.035 Flow Length=188' 0.03 Tc=1.1 min 0.025 CN=98 0.02 0.015 0.01 0.005 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)