The California Environmental Quality Act (CEQA) was adopted in 1970 and intended to inform governmental decision-makers and the public about potential environmental effects of a project; identify ways to reduce adverse impacts; offer alternatives to the project; and disclose to the public why a project was approved.

CEQA applies to projects undertaken, funded or requiring an issuance of a permit by a public agency.  South Coast AQMD has two basic roles under CEQA:

  • Lead Agency -  responsible for preparing an environmental analysis in the form of an Environmental Impact Report (EIR), Environmental Impact Statement (EIS), Negative Declaration (ND), or Environmental Assessment (EA).  For information regarding these document types, please refer to the Frequently Asked Questions (FAQs).

To review documents for South Coast AQMD is the lead agency, please see CEQA Documents

  • Commenting Agency - responsible for reviewing and commenting on the air quality analysis prepared by other public agencies. 

To review projects where South Coast AQMD is a commenting or responsible agency, please see Responsibility as a Commenting Agency.


To make suggestions or comments, please email the CEQA Team.
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South Coast Air Quality Management District

21865 Copley Dr, Diamond Bar, CA 91765



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