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Related Material
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
- Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; State of California, Approval of the Maintenance Plan for the San Francisco Bay Area and Redesignation of the San Francisco Bay Area to Attainment; Approval of Emissions Inventory; Approval of NOX Exemption Petition
- Implementation of Revised Air Quality Standards for Ozone and Particulate Matter