Stormwater Management Report 03302026

24-223 DRAINAGE DESIGN-PROPOSED-2026-03-30 NOAA 24-hr D 100-Year-2020 Rainfall=9.18", P2=3.47" Prepared by Jarmel Kizel Architects & Engnrs Printed 3/30/2026 HydroCAD® 10.20-6a s/n 12607 © 2024 HydroCAD Software Solutions LLC Page 60 Subcatchment P3B-IMP: P3B IMPERVIOUS Hydrograph 0.12 Runoff 0.115 0.11 cfs 0.11 0.105 NOAA 24-hr D 0.1 100-Year-2020 Rainfall=9.18" 0.095 0.09 P2=3.47" 0.085 0.08 Runoff Area=980 sf 0.075 Runoff Volume=730 cf 0.07 Flow (cfs) 0.065 Runoff Depth=8.94" 0.06 0.055 Flow Length=188' 0.05 0.045 Tc=1.1 min 0.04 CN=98 0.035 0.03 0.025 0.02 0.015 0.01 0.005 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

0.01 0.005 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 Time (hours)