Approval and Promulgation of Implementation Plans; Ohio

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[OH63-1-6403b, OH64-1-6404b; FRL-5020-6]

Approval and Promulgation of Implementation Plans; Ohio

AGENCY: United States Environmental Protection Agency (USEPA).

ACTION: Proposed rule.

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SUMMARY: The USEPA is approving, through direct final procedure, two

exemption requests from the requirements contained in Section 18(f) of

the Clean Air Act (Act) for the Toledo and Dayton ozone nonattainment

areas in Ohio. These exemption requests, submitted by the State of

Ohio, are based upon the most recent three years of ambient air

monitoring data which demonstrate that the National Ambient Air Quality

Standard (NAAQS) for ozone has been attained in each of these areas

without additional reductions of nitrogen oxides (NOX). Section

182(f) of the Act requires States with areas designated nonattainment

of the NAAQS for ozone, and classified as moderate nonattainment and

above, to adopt reasonably available control technology (RACT) rules

for major stationary sources of NOX and to provide for

nonattainment area new source review (NSR) for new sources and

modifications that are major for NOX. Section 182(f) provides

further that these requirements do not apply for areas outside an ozone

transport region if USEPA determines that additional reductions of

NOX would not contribute to attainment of the NAAQS for ozone in

the area.

In the Final Rules Section of this Federal Register, the USEPA is

approving these exemption requests as a direct final rule without prior

proposal because USEPA views this as noncontroversial and anticipates

no adverse comments. A detailed rationale for the approval is set forth

in the direct final rule. If no adverse comments are received in

response to that direct final rule, no further activity is contemplated

in relation to this proposed rule. If USEPA receives adverse comments,

the direct final rule will be withdrawn and all public comments

received will be addressed in a subsequent final rule based on this

proposed rule. USEPA will not institute a second comment period on this

action. Any parties interested in commenting on this action should do

so at this time.

DATES: Comments on this action must be received by August 10, 1994.

ADDRESSES: Written comments should be mailed to: William L. MacDowell,

Chief, Regulation Development Section, Air Enforcement Branch (AE-17J),

USEPA, Region 5, 77 West Jackson Blvd., Chicago, Illinois 60604.

Copies of the State's request and USEPA's analysis of it are

available for inspection at: Regulation Development Section, Air

Enforcement Branch (AE-17J), USEPA, Region 5, 77 West Jackson Blvd.,

Chicago, Illinois 60604.

FOR FURTHER INFORMATION CONTACT: Richard Schleyer, Environmental

Engineer, Regulation Development Section, Air Enforcement Branch (AE-

17J), USEPA, Region 5, 77 West Jackson Blvd., Chicago, Illinois 60604.

SUPPLEMENTARY INFORMATION: For additional information see the direct

final rule published in the Rules Section of this Federal Register.

Authority: 42 U.S.C. 7401-7642.

Dated: July 11, 1994.

Valdas V. Adamkus,

Regional Administrator.

[FR Doc. 94-18234 Filed 7-25-94; 8:45 am]

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