Stormwater Management Report Revised as of 01282026 4936 0314 8685 v2

24-223 DRAINAGE DESIGN-PROPOSED-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 12 Subcatchment P2: P-2 Pervious-w-offsite-Undisturbed Hydrograph 0.52 Runoff 0.5 0.47 cfs 0.48 0.46 NOAA 24-hr D 0.44 0.42 2-Year-2020 Rainfall=3.47" 0.4 0.38 P2=3.47" 0.36 0.34 0.32 Runoff Area=38,775 sf 0.3 Runoff Volume=3,747 cf Flow (cfs) 0.28 0.26 0.24 Runoff Depth=1.16" 0.22 0.2 Flow Length=694' 0.18 0.16 Tc=14.0 min 0.14 0.12 CN=73 0.1 0.08 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)