Governing Law and Regulations
California Environmental Protection Agency (Cal/EPA) California Air Resources Board (CARB)
Local air districts
U.S. Environmental Protection Agency (EPA) Region 9
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. In addition to permitting nonmajor sources, each of the 35 local air districts in California has also adopted New Source Review (NSR) regulations for permitting new major sources or major modifications to existing sources located in nonattainment areas that have been incorporated into the state implementation plan (SIP). These SIP-approved regulations usually incorporate both the applicable California provisions and the federal nonattainment NSR requirements into one or more regulations. See the state section AIR-GENERAL for additional information on SIPs and the local air districts and the national section NEW SOURCE REVIEW for additional guidance on the requirements of nonattainment NSR.
New major sources or major modifications to existing sources located in attainment areas must comply with the provisions of Prevention of Significant Deterioration (PSD). ...