Construction NPDES
National Pollutant Discharge Elimination System (NPDES) - Compliance Program
All construction projects are required to comply with two interrelated sets of municipal
directives with respect to water quality management:
- Prevent unauthorized non-stormwater discharges, and
- Implementation of BMP’s to the maximum extent practicable to reduce or eliminate
contaminants within stormwater discharges.
Permits
The County of Orange is located in two separate California Regional Water Quality
Control Board jurisdictions. The approximate jurisdictional dividing line is El
Toro Road. Southerly of El Toro Road is the San Diego Regional Water Quality Control
Board and northerly is the Santa Ana Regional Water Quality Control Board.
In early 2002, the San Diego and Santa Ana Regional Water Quality Control Boards
issued NPDES permits that regulate stormwater discharges from municipal storm drain
systems.
The Municipal NPDES Storm Water Permit No. CAS618030, Order No. R8-2009-0030 from
the California Regional Water Quality Control Board, Santa Ana Region,
may be viewed at the following Internet web address: http://www.swrcb.ca.gov/rwqcb8/
The Municipal NPDES Storm Water Permit No. CAS0108740, Order No. R9-2002-0001 from
the California Regional Water Quality Control Board, San Diego Region,
may be viewed at the following Internet web address: http://www.swrcb.ca.gov/rwqcb9/
Construction Projects
Projects with greater than, or equal to one (1) acre of disturbed soil area (DSA)
are required to obtain coverage under the State Construction General Permit, 99-08-DWQ.
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