09 Stormwater Mgmt Report 122025

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 ........ 7 Conclusions ......................................................................................................................... 9 ▪ Stormwater Management Report for

gement Facilities ........ 7 Conclusions ......................................................................................................................... 9 ▪ Stormwater Management Report for Proposed Retail Store▪ i ▪ December 2025 ▪