The Best Management Practices (BMPs) in this category address stormwater runoff from areas of new development and redevelopment. Unlike the temporary BMPs installed during construction, post construction BMPs are permanent and are used to control pollution after construction has been completed.
Kalispell's Stormwater Management Program contains three BMPs in the Post Construction Stormwater Management for New Development and Redevelopment category including:
The increase in impervious surfaces such as rooftops, roads, and parking lots can increase urban runoff and have a detrimental impact on aquatic systems due to increased concentrations of sediment, nutrients, road salts, heavy metals, pathogenic bacteria, and petroleum hydrocarbons. The best way to mitigate stormwater impacts from new development and redevelopment is to use practices to treat, store, and infiltrate runoff onsite before it can affect downstream water bodies.