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PERMITS

There are several permit requirements imposed by the Regional Water Quality Control Boards that affect county road projects including but not limited to:

•  Santa Ana Regional Water Quality Control Board

    - See Map for Boundaries & Land Uses
    - Dewatering on Land (Contact Transportation NPDES Coordinator)

    - Construction Dewatering (Contact Transportation NPDES Coordinator)

    - MS4 Permit

    - Drainage Area Management Plan

•  Santa Margarita

    - See Map for Boundaries

    - MS4 Permit

    - Drainage Area Management Plan

•  Whitewater

    - See Map for Boundaries & Land Uses

    - MS4 Permit

    - Stormwater Management Plan