Stormwater Management Report 03302026

24-223 DRAINAGE DESIGN-EXISTING-2026-03-30 NOAA 24-hr D 10-Year-2050 Rainfall=6.37", 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 76 Subcatchment E2B-IMP: E2B IMPERVIOUS Hydrograph 0.105 Runoff 0.1 0.09 cfs 0.095 0.09 NOAA 24-hr D 0.085 10-Year-2050 Rainfall=6.37" 0.08 0.075 P2=4.09" 0.07 0.065 Runoff Area=1,202 sf 0.06 Runoff Volume=614 cf Flow (cfs) 0.055 0.05 Runoff Depth=6.13" 0.045 Flow Length=188' 0.04 0.035 Tc=1.1 min 0.03 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

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)