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 46 Subcatchment E1C: E1C Pervious-w-offsite-Undisturbed Hydrograph Runoff 2.44 cfs NOAA 24-hr D 100-Year-2020 Rainfall=9.18" 2 P2=3.47" Runoff Area=38,775 sf Runoff Volume=18,560 cf Flow (cfs) Runoff Depth=5.74" Flow Length=668' 1 Tc=13.6 min CN=72 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)