2026 05 Storm Water Management Report rcd 5 6 2026

2026-04 Proposed & Existing ConditNOAA 24-hr D 10-Year-Current Rainfall=5.38", P2=3.47" 2026-04 Proposed & Existing ConditNOAA 24-hr D 10-Year-Current Rainfall=5.38", 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 27 HydroCAD® 10.20-7a s/n 08640 © 2025 HydroCAD Software Solutions LLC Page 28 Summary for Link 1L: POI #1 Summary for Link 2L: POI #2 Inflow Area = 0.534 ac, 70.60% Impervious, Inflow Depth = 4.10" for 10-Year-Current event Inflow Area = 0.044 ac, 34.09% Impervious, Inflow Depth = 2.81" for 10-Year-Current event Inflow = 2.41 cfs @ 12.10 hrs, Volume= 0.183 af Inflow = 0.14 cfs @ 12.10 hrs, Volume= 0.010 af Primary = 2.41 cfs @ 12.10 hrs, Volume= 0.183 af, Atten= 0%, Lag= 0.0 min Primary = 0.14 cfs @ 12.10 hrs, Volume= 0.010 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 1L: POI #1 Link 2L: POI #2

Link 1L: POI #1 Link 2L: POI #2 Hydrograph Hydrograph Inflow Inflow 2.41 cfs Primary 0.14 cfs Primary 2.41 cfs 0.15 0.14 cfs Inflow Area=0.534 ac 0.14 Inflow Area=0.044 ac 0.13 0.12 2 0.11 0.1 0.09 Flow (cfs)

0.09 Flow (cfs) Flow (cfs) 0.08 0.07 0.06 1 0.05 0.04 0.03 0.02 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)