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 6 Subcatchment 1S: Roof Hydrograph Runoff 2.04 cfs 2 NOAA 24-hr D 2-Year-2020 Rainfall=3.47" P2=3.47" Runoff Area=48,537 sf Runoff Volume=13,091 cf Flow (cfs) Runoff Depth=3.24" 1 Flow Length=466' Tc=1.5 min CN=98 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)