Stormwater Management Report Revised as of 01282026 4936 0314 8685 v2

24-223 DRAINAGE DESIGN-EXISTING-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 16 Subcatchment E2B-IMP: E2B IMPERVIOUS Hydrograph 0.055 Runoff 0.05 cfs 0.05 NOAA 24-hr D 0.045 2-Year-2020 Rainfall=3.47" 0.04 P2=3.47" 0.035 Runoff Area=1,202 sf Runoff Volume=324 cf Flow (cfs) 0.03 Runoff Depth=3.24" 0.025 Flow Length=188' 0.02 Tc=1.1 min 0.015 CN=98 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 31 32 33 34 35 36 Time (hours)