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 8 Subcatchment P1-I: P1 IMPERVIOUS PARKING Hydrograph Runoff 0.9 0.84 cfs 0.85 0.8 NOAA 24-hr D 0.75 2-Year-2020 Rainfall=3.47" 0.7 0.65 P2=3.47" 0.6 Runoff Area=19,976 sf 0.55 Runoff Volume=5,388 cf Flow (cfs) 0.5 0.45 Runoff Depth=3.24" 0.4 0.35 Flow Length=425' 0.3 Tc=2.7 min 0.25 0.2 CN=98 0.15 0.1 0.05 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)