P037: Urban Stormwater Fine Sediment Filtration Using Granular Perlite

The infiltration of stormwater is not always practical as a treatment BMP in the LTB, so an effective and economical treatment alternative is needed. The operation of manned sedimentation or filtration systems for stormwater is not technically or economically feasible. Granular Perlite has been tested and utilized as an unmanned stormwater filter media. In order to further the understanding of the benefits and costs of a perlite filter media as a treatment BMP in the LTB, El Dorado County proposes to conduct full scale testing of this BMP in an existing urban stormwater system that currently discharges directly to Trout Creek.