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 31 HydroCAD® 10.20-7a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 32 Summary for Link 5L: POI #2 Summary for Link 6L: POI #3 Inflow Area = 0.042 ac, 40.48% Impervious, Inflow Depth = 2.82" for 2-Year-Projected event Inflow Area = 0.076 ac, 0.00% Impervious, Inflow Depth = 2.12" for 2-Year-Projected event Inflow = 0.14 cfs @ 12.10 hrs, Volume= 0.010 af Inflow = 0.17 cfs @ 12.16 hrs, Volume= 0.013 af Primary = 0.14 cfs @ 12.10 hrs, Volume= 0.010 af, Atten= 0%, Lag= 0.0 min Primary = 0.17 cfs @ 12.16 hrs, Volume= 0.013 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 5L: POI #2 Link 6L: POI #3

Link 5L: POI #2 Link 6L: POI #3 Hydrograph Hydrograph Inflow Inflow 0.14 cfs Primary 0.19 0.17 cfs Primary 0.15 0.14 cfs 0.17 cfs 0.14 Inflow Area=0.042 ac 0.18 0.17 Inflow Area=0.076 ac 0.13 0.16 0.12 0.15 0.14 0.11

0.14 0.11 0.13 0.1 0.12 0.09 Flow (cfs) Flow (cfs) 0.11 0.08 0.1 0.09 0.07 0.08 0.06 0.07 0.05 0.06 0.04 0.05 0.03 0.04 0.03 0.02

0.03 0.02 0.02 0.01 0.01 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)