Determination of Attainment of the Ozone Standard by the Cleveland, Toledo, Dayton and the Cincinnati-Hamilton Interstate Ozone Nonattainment Areas and Determination Regarding Applicability of Certain Reasonable Further Progress and Attainment Demonstration Requirements; Ohio

The USEPA is determining, through direct final procedure, that the Cleveland ozone nonattainment area (which includes the Counties of Ashtabula, Cuyahoga, Geauga, Lake, Lorain, Medina, Portage and Summit); Toledo (which includes the Counties of Lucas and Wood); Dayton (which includes the Counties of Clark, Greene, Miami, and Montgomery); and the Ohio portion of the Cincinnati-Hamilton Interstate (which includes the Counties of Butler, Clermont, Hamilton and Warren) ozone nonattainment areas have attained the National Ambient Air Quality Standard (NAAQS) for ozone. This determination is based upon three years of complete, quality-assured, ambient air monitoring data for the 1992 to 1994 ozone seasons that demonstrate that the ozone NAAQS has been attained in each of these areas. On the basis of this determination, USEPA is also determining that certain reasonable-further-progress (RFP) and attainment demonstration requirements, along with certain other related requirements, of Part D of Title 1 of the Clean Air Act are not applicable to the Cleveland, Toledo, Dayton and Cincinnati areas for so long as these areas continue to attain the ozone NAAQS. In the proposed rules section of this Federal Register, USEPA is proposing these determinations and soliciting public comment on them. If adverse comments are received on this direct final rule, USEPA will withdraw this final rule and address these comments in a final rule on the related proposed rule which is being published in the proposed rules section of this Federal Register.