2026 05 Storm Water Management Report rcd 5 6 2026

2026-04 Proposed & Existing CondiNOAA 24-hr D 2-Year-Projected Rainfall=4.09", P2=4.09" 2026-04 Proposed & Existing CondiNOAA 24-hr D 2-Year-Projected Rainfall=4.09", P2=4.09" 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 19 HydroCAD® 10.20-7a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 20 Summary for Link 2L: POI #2 Summary for Link 3L: POI #3 Inflow Area = 0.044 ac, 34.09% Impervious, Inflow Depth = 1.88" for 2-Year-Projected event Inflow Area = 0.103 ac, 18.45% Impervious, Inflow Depth = 1.41" for 2-Year-Projected event Inflow = 0.09 cfs @ 12.10 hrs, Volume= 0.007 af Inflow = 0.13 cfs @ 12.16 hrs, Volume= 0.012 af Primary = 0.09 cfs @ 12.10 hrs, Volume= 0.007 af, Atten= 0%, Lag= 0.0 min Primary = 0.13 cfs @ 12.16 hrs, Volume= 0.012 af, Atten= 0%, Lag= 0.0 min Routed to nonexistent node 15L Routed to nonexistent node 15L 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 2L: POI #2 Link

Link 2L: POI #2 Link 3L: POI #3 Hydrograph Hydrograph Inflow Inflow 0.1 0.09 cfs Primary 0.15 0.13 cfs Primary 0.095 0.09 cfs 0.13 cfs 0.09 Inflow Area=0.044 ac 0.14 Inflow Area=0.103 ac 0.13 0.085 0.08 0.12 0.075 0.11 0.07

0.11 0.07 0.1 0.065 0.06 0.09 Flow (cfs) Flow (cfs) 0.055 0.08 0.05 0.07 0.045 0.04 0.06 0.035 0.05 0.03 0.04 0.025 0.02 0.03 0.015 0.02 0.01 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 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)