General Industrial Stormwater Permit:
The State of California requires businesses that conduct activities that fall under certain Standard Industrial Classification (SIC) codes to gain coverage under a general statewide industrial stormwater permit. SIC codes that typically require permit coverage are associated with activities such as:
- Manufacturing
- Mining
- Recycling
- Salvage
- Auto dismantling
- Transportation, if on-site maintenance or fueling is conducted
- Hazardous waste storage or treatment as a primary activity
- Cement production
The State of California requires that these facilities file a Notice of Intent (NOI), which is an application for permit coverage, and develop a stormwater pollution prevention plan (SWPPP), as well as conduct monitoring and sampling to determine if pollutants are leaving the facility in stormwater runoff. Certain facilities which can demonstrate that they have no stormwater exposure to their process and related activities can be exempted from the requirement for permit coverage. You may contact the State's Regional Water Quality Control Board, Central Valley Region office at (916) 464-3291, for more information. Click here to see a copy of the State’s General Industrial Stormwater Permit . (Opens in new browser window.)
Notice of Intent (NOI):
In order to apply for General Industrial Stormwater Permit coverage, you must complete and and submit a Notice of Intent (NOI).
Stormwater Pollution Prevention Plan (SWPPP):
A SWPPP is a document that must be developed by the operators of facilities that are subject to the State of California’s General Industrial Stormwater Permit. The SWPPP identifies pollutants that are generated at a facility and identifies measures for controlling those pollutants. The SWPPP also addresses issues such as stormwater pollution awareness training for staff, pollutant monitoring, and other items. The California Stormwater Quality Association Industrial & Commercial BMP handbook download page has a sample SWPPP.
