All development and redevelopment projects are obligated to comply with Federal, State, and Local storm water regulations during the planning, construction, and post-construction phases of development. Storm water discharges to municipal storm drain systems, that are due to development are regulated by the San Diego Regional Water Quality Control Board (RWQCB). Whereas, storm water discharges that occur as a result of construction activities are regulated by the State Water Resources Control Board (SWRCB). The City of Oceanside is responsible for local administration of storm water mitigation requirements and has developed a Best Management Plan (BMP) Design Manual as a resource document, which is designed to facilitate the implementation of the requirements of the RWQCB Municipal Permit.
Municipal Permit regulations make it necessary for projects to demonstrate compliance with storm water mitigation requirements prior to project approval or issuance of local permits. Requirements that apply during the planning phase and prior to project entitlement include minimum standards for the implementation of Low Impact Development (LID) practices and the integration of flow control criteria designed to mitigate storm runoff peaks and durations from development sites. This unified LID approach combines site planning and design measures coupled with engineered, Integrated Management Practices (IMPs), such as bioretention facilities, flow-through planters, dry wells, infiltration basins, and cisterns.
Projects entering into the construction phase of development are regulated by the SWRCB and the City of Oceanside. Construction projects are required to demonstrate both intended and ongoing compliance with City Grading and Erosion Control Ordinances, and applicable State Construction General Permit (CGP) requirements. In addition, projects seeking approval of Grading or Improvement Plans are obligated, by RWQCB and City regulations, to demonstrate compliance with State requirements for long-term inspection, operation, and maintenance of permanent BMPs through the implementation of a Storm Water Operation and Maintenance Plan (O&M Plan).
The combined overall goal of the City and applicant is to produce a comprehensive storm water mitigation design that demonstrates compliance with the requirements of the Municipal Permit and is able to withstand an audit by the San Diego Regional Water Quality Control Board.
Project applicants are encouraged to coordinate with City Storm Water staff to enable the development a plausible storm water mitigation concept, prior to development and plan submittal. Projects may elect to use the appropriate City Storm Water Mitigation Plan (SWMP) template as an aid to plan preparation. In addition, it is suggested the project applicant consult with City Storm Water staff for assistance during each phase of development. By implementing the unified LID design procedure, projects may develop a single integrated design that demonstrates compliance with Federal, State, and Local storm water regulations.
|The three most common mistakes:|
The most common and potentially costly errors made by the applicant during the entitlement (planning) phase of a project, with respect to storm water quality compliance are:
|Requirements for all development projects:|
All development projects are required to implement permanent control measures to reduce the discharge of storm water pollutants to the Maximum Extent Practicable (MEP). All projects are required to include:
All projects are also required to design the site drainage so that runoff from impervious areas such as rooftops, driveways, and parking lots; drains through vegetated or pervious areas prior to draining to a street or storm drain system.