Stormwater Management Report Revised as of 01282026 4936 0314 8685 v2

24-223 DRAINAGE DESIGN-EXISTING-UPDATE NOAA 24-hr D 2-Year-2020 Rainfall=3.47", P2=3.47" Prepared by Jarmel Kizel Architects & Engnrs Printed 1/28/2026 HydroCAD® 10.20-6a s/n 12607 © 2024 HydroCAD Software Solutions LLC Page 8 Subcatchment E1B: E1B DISTURBED/PERVIOUS Hydrograph 0.125 Runoff 0.12 0.11 cfs 0.115 0.11 NOAA 24-hr D 0.105 0.1 2-Year-2020 Rainfall=3.47" 0.095 0.09 P2=3.47" 0.085 0.08 Runoff Area=7,928 sf 0.075 Runoff Volume=728 cf Flow (cfs) 0.07 0.065 0.06 Runoff Depth=1.10" 0.055 0.05 Flow Length=464' 0.045 0.04 Tc=3.8 min 0.035 0.03 CN=72 0.025 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 31 32 33 34 35 36 Time (hours)