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###### Environmental Protection Agency

          - 40 CFR Part 52
          - [EPA-R05-OAR-2014-0385; FRL-9917-91-Region 5]

# AGENCY:

Environmental Protection Agency.

# ACTION:

Proposed rule.

# SUMMARY:

                        The Environmental Protection Agency (EPA) is proposing to approve, under the Clean Air Act (CAA), revisions to Ohio's state implementation plan (SIP) as requested by the Ohio Environmental Protection Agency (OEPA) to EPA on June 19, 2014. The revisions to Ohio's SIP implement certain EPA regulations for particulate matter smaller than 2.5 micrometers (PM2.5) by establishing definitions related to PM2.5, defining PM2.5                         increment levels, and setting PM2.5                         class 1 variances. The revisions also incorporate changes made to definitions and regulations that recognize nitrogen oxides (NOX) as an ozone precursor, revising and adding definitions, adding Federal land manager notification requirements, and incorporating minor organizational or typographical changes.                    

# DATES:

Comments must be received on or before November 28, 2014.

# ADDRESSES:

Submit your comments, identified by Docket ID No. EPA-R05-OAR-2014-0385, by one of the following methods:

                        1.                         *www.regulations.gov*: Follow the on-line instructions for submitting comments.                    

                        2.                         *Email: damico.genevieve@epa.gov.*

                        3.                         *Fax:*                         (312) 385-5501.                    

                        4.                         *Mail:*                         Genevieve Damico, Chief, Air Permits Section, Air Programs Branch (AR-18J), U.S. Environmental Protection Agency, 77 West Jackson Boulevard, Chicago, Illinois 60604.                    

                        5.                         *Hand Delivery:*                         Genevieve Damico, Chief, Air Permits Section, Air Programs Branch (AR-18J), U.S. Environmental Protection Agency, 77 West Jackson Boulevard, Chicago, Illinois 60604. Such deliveries are only accepted during the Regional Office normal hours of operation, and special arrangements should be made for deliveries of boxed information. The Regional Office official hours of business are Monday through Friday, 8:30 a.m. to 4:30 p.m., excluding Federal holidays.                    

                        Please see the direct final rule which is located in the Rules section of this                         **Federal Register**                         for detailed instructions on how to submit comments.                    

# FOR FURTHER INFORMATION CONTACT:

                        Charmagne Ackerman, Environmental Engineer, Air Permits Section, Air Programs Branch (AR-18J), Environmental Protection Agency, Region 5, 77 West Jackson Boulevard, Chicago, Illinois 60604, (312) 886-0448,                         *ackerman.charmagne@epa.gov.*

# SUPPLEMENTARY INFORMATION:

                    In the Final Rules section of this                     **Federal Register**                    , EPA is approving the State's SIP submittal as a direct final rule without prior proposal because the Agency views this as a noncontroversial submittal 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 this rule, no further activity is contemplated. If EPA 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. EPA will not institute a second comment period. Any parties interested in commenting on this action should do so at this time. Please note that if EPA receives adverse comment on an amendment, paragraph, or section of this rule and if that provision may be severed from the remainder of the rule, EPA may adopt as final those provisions of the rule that are not the subject of an adverse comment. For additional information, see the direct final rule which is located in the Rules section of this                     **Federal Register.**

Dated: October 6, 2014.

Susan Hedman,

Regional Administrator, Region 5.

[FR Doc. 2014-25481 Filed 10-27-14; 8:45 am]

BILLING CODE 6560-50-P