Stormwater Management Report Revised as of 01282026 4936 0314 8685 v2

24-223 DRAINAGE DESIGN-EXISTING-UPDATE NOAA 24-hr D 100-Year-2050 Rainfall=11.52", P2=4.09" Prepared by Jarmel Kizel Architects & Engnrs Printed 1/28/2026 HydroCAD® 10.20-6a s/n 12607 © 2024 HydroCAD Software Solutions LLC Page 98 Subcatchment E1B: E1B DISTURBED/PERVIOUS Hydrograph Runoff 0.95 0.89 cfs 0.9 0.85 NOAA 24-hr D 0.8 100-Year-2050 Rainfall=11.52" 0.75 P2=4.09" 0.7 0.65 Runoff Area=7,928 sf 0.6 Runoff Volume=5,211 cf Flow (cfs) 0.55 Runoff Depth=7.89" 0.5 0.45 Flow Length=464' 0.4 Tc=3.6 min 0.35 CN=72 0.3 0.25 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)