2026 05 Storm Water Management Report rcd 5 6 2026

2026-04 Proposed & Existing CoNOAA 24-hr D 100-Year-Projected Rainfall=11.52", P2=4.09" 2026-04 Proposed & Existing CoNOAA 24-hr D 100-Year-Projected Rainfall=11.52", 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 55 HydroCAD® 10.20-7a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 56 Summary for Link 2L: POI #2 Summary for Link 3L: POI #3 Inflow Area = 0.044 ac, 34.09% Impervious, Inflow Depth = 8.00" for 100-Year-Projected event Inflow Area = 0.103 ac, 18.45% Impervious, Inflow Depth = 7.22" for 100-Year-Projected event Inflow = 0.41 cfs @ 12.10 hrs, Volume= 0.029 af Inflow = 0.76 cfs @ 12.16 hrs, Volume= 0.062 af Primary = 0.41 cfs @ 12.10 hrs, Volume= 0.029 af, Atten= 0%, Lag= 0.0 min Primary = 0.76 cfs @ 12.16 hrs, Volume= 0.062 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 3L: POI

Link 2L: POI #2 Link 3L: POI #3 Hydrograph Hydrograph Inflow Inflow 0.41 cfs Primary 0.85 0.76 cfs Primary 0.44 0.41 cfs 0.8 0.76 cfs 0.42 0.4 Inflow Area=0.044 ac 0.75 Inflow Area=0.103 ac 0.38 0.7 0.36 0.65 0.34 0.32 0.6 0.3 0.55

0.6 0.3 0.55 0.28 0.5 Flow (cfs) Flow (cfs) 0.26 0.24 0.45 0.22 0.4 0.2 0.35 0.18 0.16 0.3 0.14 0.25 0.12 0.1 0.2 0.08 0.15 0.06 0.1 0.04 0.02 0.05 0 0 0 2 4 6 8 10 12 14 16 18 20

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)