In regards to the WQMP, there are three major categories of BMPs:
- Site Design BMPs (also known as Low Impact Development strategies) - are Project features that are designed or incorporated into a project to minimize the increase in stormwater runoff from the developed project site. Examples of Site Design BMPs include the use of porous pavement or pavers, minimizing the use of impervious pavement areas, directing roof drains to landscaped areas, disconnecting impervious areas, and conserving natural areas, etc., to allow water to percolate into the ground.
- Source Control BMPs - Activities or structures aimed at eliminating or minimizing contact between pollutant sources and stormwater/urban runoff. Examples of Source Control BMPs include education, contractor training, storm drain markings, sweeping, litter collection, canopies over fueling islands, and awnings or tarps to cover materials stored outdoors. These BMPs help keep water from carrying pollutants to storm drains and then to the lake.
- Treatment Control BMPs - Engineered devices or systems incorporated into the project's drainage system to remove pollutants from runoff before the runoff leaves the project site. Examples of Treatment Control BMPs include vegetated swales, infiltration trenches, detention/retention basins, catch basin filters, and vortex separators. These devices help remove potential pollutants from runoff prior to leaving site and entering storm drain system and our lake.
More information about BMPs can be found at the CASQA's website, Caltrans, and at Riverside County Flood Control and Water Conservation District's website.