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 18 Subcatchment E2B-P: E2B PERVIOUS Hydrograph 0.023 Runoff 0.022 0.02 cfs 0.021 0.02 NOAA 24-hr D 0.019 0.018 2-Year-2020 Rainfall=3.47" 0.017 0.016 P2=3.47" 0.015 Runoff Area=1,329 sf 0.014 Runoff Volume=135 cf Flow (cfs) 0.013 0.012 0.011 Runoff Depth=1.22" 0.01 0.009 Flow Length=188' 0.008 0.007 Tc=5.8 min 0.006 0.005 CN=74 0.004 0.003 0.002 0.001 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)