New Development and Redevelopment projects are required to employ pollutant source control as well as low impact development (LID) treatment designs. These requirements were created in order to minimize the impacts on receiving water quality downstream of proposed development projects. The City of La Mesa Standard Urban Storm Water Mitigation Plan (SUSMP), updated in March 2010 serves as a guidance manual for developers in order to comply with City requirements. 

Project proponents are required to complete the storm water checklist located in Appendix A of the La Mesa SUSMP.  This checklist will indicate if the proposed project is considered a Priority Development Project (PDP). If the project in question is a PDP, a Post Construction Water Quality Technical Report (PCWQTR) shall be submitted. If the project is not a PDP, a Standard Post Construction Best Management Practices Plan (SPCBMPP) shall be submitted.