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Design of Low Impact Development / Best Management Practices
Compliant with Section C.3 of the Municipal Regional Stormwater Permit

 
Section C.3 of the Bay Area's Municipal Regional Stormwater Permit requires projects that create and/or replace 10,000-square-feet or more of impervious surface area (with limited exceptions) to incorporate the following stormwater controls:

• site design measures,
• source control measures, and
• stormwater treatment measures.

Section C.3 also requires projects that create and/or replace one acre or more of impervious surface area and increase impervious area over the pre-project condition need to incorporate hydromodification management measures, if the project is located in an area susceptible to hydromodification.