Stormwater Management Report Revised as of 01282026 4936 0314 8685 v2

24-223 DRAINAGE DESIGN-EXISTING-UPDATE NOAA 24-hr D 100-Year-2020 Rainfall=9.18", 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 44 Subcatchment E1B: E1B DISTURBED/PERVIOUS Hydrograph 0.7 Runoff 0.65 cfs 0.65 NOAA 24-hr D 0.6 100-Year-2020 Rainfall=9.18" 0.55 P2=3.47" 0.5 Runoff Area=7,928 sf 0.45 Runoff Volume=3,795 cf Flow (cfs) 0.4 Runoff Depth=5.74" 0.35 Flow Length=464' 0.3 Tc=3.8 min 0.25 CN=72 0.2 0.15 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 31 32 33 34 35 36 Time (hours)