Stormwater Management Report Revised as of 01282026 4936 0314 8685 v2

24-223 DRAINAGE DESIGN-PROPOSED-UPDATE NOAA 24-hr D 2-Year-2050 Rainfall=4.09", 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 88 Subcatchment P3C: P3C- Roof Area Hydrograph 0.25 Runoff 0.24 0.22 cfs 0.23 0.22 NOAA 24-hr D 0.21 0.2 2-Year-2050 Rainfall=4.09" 0.19 0.18 P2=4.09" 0.17 0.16 Runoff Area=4,500 sf 0.15 Runoff Volume=1,446 cf Flow (cfs) 0.14 0.13 0.12 Runoff Depth=3.85" 0.11 0.1 Flow Length=106' 0.09 0.08 Tc=1.0 min 0.07 0.06 CN=98 0.05 0.04 0.03 0.02 0.01 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)