Notice of Proposed Actions on Attainment Demonstrations for the One-Hour National Ambient Air Quality Standards for Ozone

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This document announces that, elsewhere in today's Federal Register, EPA is proposing individually to approve or conditionally approve, and, in the alternative, to disapprove attainment demonstration State implementation plans (SIPs or plans) for ten areas in the eastern United States that are not in attainment of the 1-hour health and welfare-based national ambient air quality standards (NAAQS or standard) for ground-level ozone. These areas are designated as nonattainment for the ozone standard. The SIP demonstrations were prepared and forwarded to EPA from States and the District of Columbia (D.C.) where the nonattainment areas are located. They were submitted to meet the requirements of Title I of the Clean Air Act (CAA). The nonattainment areas on which EPA is proposing action are listed in the SUPPLEMENTARY INFORMATION section according to the EPA Regional Office in which they are located.