Stormwater: Post Construction Stormwater Design
Low Impact Design
The California State Water Resources Control Board (SWRCB) defines low impact development (LID) as an “ecosystem-based approach to designing a built environment that remains a functioning part of an ecosystem rather than existing apart from it.” On March 6, 2014, the Central Coast Regional Water Quality Control Board (CCRWQCB) adopted Resolution R3-2013-0032, Post-Construction Stormwater Management Requirements for Development Projects in the Central Coast Region. This resolution requires new development and redevelopment projects to be designed to incorporate permanent stormwater management features such as permeable pavement and rain gardens that will clean stormwater before it leaves the site.
Determine If Stormwater Management Design is Required
Projects that create or replace 2,500 square feet of impervious surface or greater are required to comply. Impervious surfaces are defined as those that do not allow for the infiltration of water, such as building footprints, sidewalks, and paved surfaces.