PRODUCT DESCRIPTION

The "first flush effect" refers to the initial surface runoff during a rainstorm and the resulting surge of concentrated water pollution. Corresponding high sheet flows wash the pollutants through storm sewers to local surface waters. Our engineers created a Best Management Practice (BMP) to counter the negative effects of urban runoff. Any cast-in-place stormwater filtration system will collect debris, capture hydrocarbons, and should reduce pollutants. Our cast-in-place stormwater sustainable drainage and filtration products and solutions also manage the significant overland flow during initial runoff events. We prioritize the treatment of a first flush event by allowing prolonged rainfall to bypass the treatment media. This bypass minimizes pulsing and prevents concentrated pollutants from the "first flush effect" from continuing on to downstream waterways.