Stormwater Management Report Revised as of 01282026 4936 0314 8685 v2

24-223 DRAINAGE DESIGN-EXISTING-UPDATE NOAA 24-hr D 10-Year-2020 Rainfall=5.38", 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 26 Subcatchment E1B: E1B DISTURBED/PERVIOUS Hydrograph 0.3 Runoff 0.28 cfs 0.28 NOAA 24-hr D 0.26 0.24 10-Year-2020 Rainfall=5.38" 0.22 P2=3.47" 0.2 Runoff Area=7,928 sf 0.18 Runoff Volume=1,648 cf Flow (cfs) 0.16 Runoff Depth=2.49" 0.14 Flow Length=464' 0.12 0.1 Tc=3.8 min 0.08 CN=72 0.06 0.04 0.02 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)