2026 05 Storm Water Management Report rcd 5 6 2026

2026-04 Proposed & Existing Conditi NOAA 24-hr D 2-Year-Current Rainfall=3.47", P2=3.47" 2026-04 Proposed & Existing Conditi NOAA 24-hr D 2-Year-Current Rainfall=3.47", P2=3.47" Prepared by Dynamic Engineering Printed 5/5/2026 Prepared by Dynamic Engineering Printed 5/5/2026 HydroCAD® 10.20-7a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 15 HydroCAD® 10.20-7a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 16 Summary for Link 4L: POI #1 Summary for Link 5L: POI #2 Inflow Area = 0.563 ac, 75.31% Impervious, Inflow Depth = 2.65" for 2-Year-Current event Inflow Area = 0.042 ac, 40.48% Impervious, Inflow Depth = 2.27" for 2-Year-Current event Inflow = 1.35 cfs @ 12.11 hrs, Volume= 0.125 af Inflow = 0.11 cfs @ 12.10 hrs, Volume= 0.008 af Primary = 1.35 cfs @ 12.11 hrs, Volume= 0.125 af, Atten= 0%, Lag= 0.0 min Primary = 0.11 cfs @ 12.10 hrs, Volume= 0.008 af, Atten= 0%, Lag= 0.0 min Routed to nonexistent node 18L Routed to nonexistent node 18L Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.001 hrs Primary outflow = Inflow, Time Span= 0.00-72.00 hrs, dt= 0.001 hrs Link 4L: POI #1 Link 5L: POI #2

Link 4L: POI #1 Link 5L: POI #2 Hydrograph Hydrograph Inflow Inflow 1.35 cfs Primary 0.125 0.11 cfs Primary 1.35 cfs 0.12 0.11 cfs Inflow Area=0.563 ac 0.115 0.11 Inflow Area=0.042 ac 0.105 0.1 0.095

0.095 0.09 1 0.085 0.08 0.075 Flow (cfs) Flow (cfs) 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035

0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours) Time (hours)