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Contact EPA Pacific Southwest Air Program

Pacific Southwest, Region 9

Serving: Arizona, California, Hawaii, Nevada, Pacific Islands, Tribal Nations

Air Actions, California

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San Diego

May 2013: Final Rule Approving Redesignation Request and Maintenance Plan for San Diego County for 1997 Ozone Standard

May 14, 2013: EPA's Region 9 Regional Administrator signed a notice of final rulemaking to approve California’s request to redesignate the San Diego County ozone nonattainment area to attainment for the 1997 8-hour ozone National Ambient Air Quality Standard and their plan for continuing to attain the 1997 ozone standard for ten years beyond redesignation.

March 2013: Proposed Approval of Redesignation Request and Maintenance Plan for San Diego County for 1997 Ozone Standard

March 14, 2013: EPA's Region 9 Regional Administrator signed a notice of proposed rulemaking to approve California’s request to redesignate the San Diego County ozone nonattainment area to attainment for the 1997 8-hour ozone National Ambient Air Quality Standard and their plan for continuing to attain the 1997 ozone standard for ten years beyond redesignation.


June 2003: Final Rule Approving Redesignation Request and Maintenance Plan for San Diego County for 1-Hour Ozone Standard

June 3, 2003: EPA's Region 9 Regional Administrator signed a notice of final rulemaking to approve California's request to redesignate the San Diego County ozone nonattainment area to attainment for the 1-hour ozone National Ambient Air Quality Standard and their plan for continuing to attain the 1-hour ozone standard for ten years beyond redesignation.

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