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 14 Subcatchment P3A-IMP: P3A IMPERVIOUS Hydrograph 0.19 Runoff 0.18 0.17 cfs 0.17 NOAA 24-hr D 0.16 0.15 2-Year-2020 Rainfall=3.47" 0.14 P2=3.47" 0.13 0.12 Runoff Area=4,040 sf 0.11 Runoff Volume=1,090 cf Flow (cfs) 0.1 0.09 Runoff Depth=3.24" 0.08 Flow Length=435' 0.07 0.06 Slope=0.0500 '/' 0.05 Tc=2.0 min 0.04 CN=98 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)