21 Stormwater Mgmt Report_082025

Table of Contents Introduction ............................................................................................................................. 1 Stormwater Management Design Methodology ...................................................................... 1 2.1 Rainfall Data .................................................................................................................... 2 2.2 Site Soils .......................................................................................................................... 3 2.3 Curve Numbers................................................................................................................ 3 2.4 Time of Concentration ..................................................................................................... 3 Pre-Development Site Conditions ........................................................................................... 3 3.1 Point of Analysis #1 ......................................................................................................... 4 3.1.1 Existing Drainage Area #1 .................................................................................. 4 Post-Development Site Conditions ......................................................................................... 4 4.1 Point of Analysis #1 ......................................................................................................... 4 4.1.1 Proposed Drainage Area #1................................................................................ 5 4.2 Stormwater Quantity Controls.......................................................................................... 5 4.3 Water Quality Controls..................................................................................................... 6 4.3.1 Pervious Paving Systems ................................................................................... 6 5.1 Groundwater Recharge ................................................................................................... 7 5.2 Soil Erosion and Sediment Control .................................................................................. 7 5.3 Low-Impact Development and Non-Structural Stormwater Management Facilities ........

rosion and Sediment Control .................................................................................. 7 5.3 Low-Impact Development and Non-Structural Stormwater Management Facilities ........ 7 Conclusions............................................................................................................................. 9 ▪ Stormwater Management Report for Proposed Retail Store▪ i ▪ August 2025 ▪