SUPPLEMENTARY INFORMATION:

Throughout this document whenever “we,” “us,” or “our” is used, we mean EPA. This supplementary information section is arranged as follows:

I. Background

II. What action is EPA taking?

III. Statutory and Executive Order Reviews.

I. Background

On August 9, 2013, MDEQ submitted revisions to Michigan rules R 336.2801, Definitions; R 336.2803, Ambient air increments; and R 336.2816, Sources impacting Federal Class I areas, additional requirements, which reflect changes to Federal rules on PM_2.5 and ozone precursors. MDEQ also submitted various revisions to Michigan rule R 336.2809 to allow for the exemption from permitting requirements of minimal air quality impacts from new sources; however, MDEQ has requested that EPA not act on subsection R 336.2809(5)(a)(iii), which creates a significant monitoring concentration (SMC) for PM_2.5 . Michigan had promulgated this subsection before the U.S. Court of Appeals for the District of Columbia Circuit vacated the Federal PM_2.5 SMC on January 22, 2013. On September 19, 2013, MDEQ submitted revisions to definitions in Michigan rules R 336.1116, R 336.1119, and R 336.1122 to address additional changes to Federal rules. The revisions to rules R 336.1116 and R 336.1119 add significance levels and definitions for PM_2.5 and account for PM_2.5 and PM₁₀ condensables in applicability determinations and in establishing emissions limits. The revision to R 336.1122(f) updates the definition of volatile organic compounds to exclude additional compounds with negligible reactivity in the formation of ozone that have been approved by EPA. However, MDEQ has asked EPA not to act on the revision to the definition of “significant” in rule R 336.1119 at this time. Michigan will resubmit revisions to that definition at a later date.

II. What action is EPA taking?

EPA is approving the submitted revisions to Michigan's Part 1 definitions, with the exception of the definition of “significant” in rule R 336.1119. EPA has determined that the revised rules comply with the revisions to the Federal requirements found in 40 CFR 51.100, 51.165, and 51.166, pertaining to new definitions and provisions for PM_2.5.

EPA is approving the submitted revisions to Michigan's Part 18 PSD rules into the Michigan SIP, with the exception of R 336.2809(5)(a)(iii), on which we are taking no action. EPA has determined that the revised rules comply with the revisions to the Federal definitions and provisions pertaining to PM_2.5 found at 40 CFR 51.100, 51.165, and 51.166.

We are publishing this action without prior proposal because we view this as a noncontroversial amendment and anticipate no adverse comments. However, in the proposed rules section of this Federal Register publication, we are publishing a separate document that will serve as the proposal to approve the state plan if relevant adverse written comments are filed. This rule will be effective June 3, 2014 without further notice unless we receive relevant adverse written comments by May 5, 2014. If we receive such comments, we will withdraw this action before the effective date by publishing a subsequent document that will withdraw the final action. We then will address all public comments in a subsequent final rule based on the proposed action. 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 that 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 the adverse comment. If we do not receive any adverse comments, this action will be effective June 3, 2014.

III. Statutory and Executive Order Reviews

Under the Clean Air Act, the Administrator is required to approve a SIP submission that complies with the provisions of the Clean Air Act and applicable Federal regulations. 42 U.S.C. 7410(k); 40 CFR 52.02(a). Thus, in reviewing SIP submissions, EPA's role is to approve state choices, provided that they meet the criteria of the Clean Air Act. Accordingly, this action merely approves state law as meeting Federal requirements and does not impose additional requirements beyond those imposed by state law. For that reason, this action:

• Is not a “significant regulatory action” subject to review by the Office of Management and Budget underExecutive Order 12866 (58 FR 51735, October 4, 1993);
• Does not impose an information collection burden under the provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
• Is certified as not having a significant economic impact on a substantial number of small entities under the Regulatory Flexibility Act (5 U.S.C. 601 et seq.);
• Does not contain any unfunded mandate or significantly or uniquely affect small governments, as described in the Unfunded Mandates Reform Act of 1995 (Public Law 104-4);
• Does not have Federalism implications as specified inExecutive Order 13132 (64 FR 43255, August 10, 1999);
• Is not an economically significant regulatory action based on health or safety risks subject toExecutive Order 13045 (62 FR 19885, April 23, 1997);
• Is not a significant regulatory action subject toExecutive Order 13211 (66 FR 28355, May 22, 2001);
• Is not subject to requirements of Section 12(d) of the National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 note) because application of those requirements would be inconsistent with the Clean Air Act; and
• Does not provide EPA with the discretionary authority to address, as appropriate, disproportionate human health or environmental effects, using practicable and legally permissible methods, underExecutive Order 12898 (59 FR 7629, February 16, 1994).

In addition, this rule does not have tribal implications as specified by Executive Order 13175 (65 FR 67249, November 9, 2000), because the SIP is not approved to apply in Indian country located in the state, and EPA notes that it will not impose substantial direct costs on tribal governments or preempt tribal law.

The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the Small Business Regulatory Enforcement Fairness Act of 1996, generally provides that before a rule may take effect, the agency promulgating the rule must submit a rule report, which includes a copy of the rule, to each House of the Congress and to the Comptroller General of the United States. EPA will submit a report containing this action and other required information to the U.S. Senate, the U.S. House of Representatives, and the Comptroller General of the United States prior to publication of the rule in the Federal Register . A major rule cannot take effect until 60 days after it is published in the Federal Register . ( printed page 18804) This action is not a “major rule” as defined by 5 U.S.C. 804(2).

Under section 307(b)(1) of the Clean Air Act, petitions for judicial review of this action must be filed in the United States Court of Appeals for the appropriate circuit by June 3, 2014. Filing a petition for reconsideration by the Administrator of this final rule does not affect the finality of this action for the purposes of judicial review nor does it extend the time within which a petition for judicial review may be filed, and shall not postpone the effectiveness of such rule or action. Parties with objections to this direct final rule are encouraged to file a comment in response to the parallel notice of proposed rulemaking for this action published in the proposed rules section of today's Federal Register , rather than file an immediate petition for judicial review of this direct final rule, so that EPA can withdraw this direct final rule and address the comment in the proposed rulemaking. This action may not be challenged later in proceedings to enforce its requirements. (See section 307(b)(2).)

40 CFR part 52 is amended as follows:

1. The authority citation for part 52 continues to read as follows:

Authority: 42 U.S.C. 7401 et seq.

2. In § 52.1170 the table in paragraph (c) is amended by:

i. Revising the entries in “Part 1. General Provisions” for R 336.1116 and R 336.1122; and

ii. Revising the entries in “Part 18. Prevention of Significant Deterioration of Air Quality” for R 336.2801, R 336.2803, R 336.2809, and R 336.2816.

The revised text reads as follows: