Determination of Attainment of the 1-Hour Ozone Standard for San Diego County, CA

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This rulemaking contains EPA's final determination that the San Diego area has attained the 1-hour ozone national ambient air quality standard (NAAQS) by the deadline required by the Clean Air Act (CAA). Elsewhere in this Federal Register, we are withdrawing our prior direct final determination, because an adverse comment was submitted on that action. In this rulemaking, we are responding to that comment and issuing our final determination of attainment.