New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to New Mexico

AGENCY:

Environmental Protection Agency.

ACTION:

Direct final rule; delegation of authority.

SUMMARY:

The New Mexico Environment Department (NMED) has submitted updated regulations for receiving delegation of the Environmental Protection Agency (EPA) authority for implementation and enforcement of New Source Performance Standards (NSPS) and National Emission Standards for Hazardous Air Pollutants (NESHAPs) for all sources (both part 70 and non-part 70 sources). The delegation of authority under this action does not apply to sources located in Bernalillo County, New Mexico, or sources located in Indian Country. EPA is providing notice that it has approved delegation of certain NSPS to NMED, and taking direct final action to approve the delegation of certain NESHAPs to NMED.

DATES:

This rule is effective on April 3, 2015 without further notice, unless EPA receives relevant adverse comment by March 4, 2015. If EPA receives such comment, EPA will publish a timely withdrawal in the Federal Register informing the public that the updated NESHAPs delegation will not take effect; however, the NSPS delegation will not be affected by such action.

ADDRESSES:

Submit your comments, identified by Docket ID No. EPA-R06-OAR-2007-0488, by one of the following methods:

• www.regulations.gov. Follow the online instructions.
• Email: Mr. Rick Barrett at barrett.richard@epa.gov. Please also send a copy by email to the person listed in the FOR FURTHER INFORMATION CONTACT section below.
• Mail or delivery: Mr. Rick Barrett, Air Permits Section (6PD-R), Environmental Protection Agency, 1445 Ross Avenue, Suite 1200, Dallas, Texas 75202-2733.

Instructions: Direct your comments to Docket No. EPA-R06-OAR-2007-0488. EPA's policy is that all comments received will be included in the public docket without change and may be made available online at http://www.regulations.gov,, including any personal information provided, unless the comment includes information claimed to be Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. Do not submit information through http://www.regulations.gov or email, if you believe that it is CBI or otherwise protected from disclosure. The http://www.regulations.gov Web site is an “anonymous access” system, which means EPA will not know your identity or contact information unless you provide it in the body of your comment. If you send an email comment directly to EPA without going through http://www.regulations.gov,, your email address will be automatically captured and included as part of the comment that is placed in the public docket and made available on the Internet. If you submit an electronic comment, EPA recommends that you include your name and other contact information in the body of your comment along with any disk or CD-ROM submitted. If EPA cannot read your comment due to technical difficulties and cannot contact you for clarification, EPA may not be able to consider your comment. Electronic files should avoid the use of special characters and any form of encryption and be free of any defects or viruses. For additional information about EPA's public docket, visit the EPA Docket Center homepage at http://www.epa.gov/epahome/dockets.htm.

Docket: The index to the docket for this action is available electronically at www.regulations.gov and in hard copy at EPA Region 6, 1445 Ross Avenue, Suite 700, Dallas, Texas. While all documents in the docket are listed in the index, some information may be publicly available only at the hard copy location (e.g., copyrighted material), and some may not be publicly available at either location (e.g., CBI). To inspect the hard copy materials, please schedule an appointment with the person listed in the FOR FURTHER INFORMATION CONTACT paragraph below or Mr. Bill Deese at (214) 665-7253.

FOR FURTHER INFORMATION CONTACT:

Rick Barrett or Aimee Wilson, U.S. EPA, Region 6, Multimedia Planning and Permitting Division (6PD), 1445 Ross Avenue, Dallas, TX 75202-2733, telephone (214) 665-7227 or (214) 665-7596; fax number (214) 665-7263; or electronic mail at barrett.richard@epa.gov or wilson.aimee@epa.gov.

SUPPLEMENTARY INFORMATION:

Throughout this document “we,” “us,” or “our” refers to EPA.

Table of Contents

I. What does this action do?

II. What is the authority for delegation?

III. What criteria must New Mexico's programs meet to be approved?

IV. How did NMED meet the approval criteria?

V. What is being delegated?

VI. What is not being delegated?

VII. How will applicability determinations be made?

VIII. What authority does EPA have?

IX. What information must NMED provide to EPA?

X. What is EPA's oversight role?

XI. Should sources submit notices to EPA or NMED?

XII. How will unchanged authorities be delegated to NMED in the future?

XIII. Final Action

XIV. Statutory and Executive Order Reviews

I. What does this action do?

EPA is providing notice that it is delegating authority for implementation and enforcement of certain NSPS to NMED. EPA is also taking direct final action to approve the delegation of certain NESHAPs to NMED. With this delegation, NMED has the primary responsibility to implement and enforce the delegated standards.

II. What is the authority for delegation?

Section 111(c)(1) of the Clean Air Act (CAA) authorizes EPA to delegate authority to any state agency which submits adequate regulatory procedures for implementation and enforcement of the NSPS program. The NSPS standards are codified at 40 CFR part 60.

Section 112(l) of the CAA and 40 CFR part 63, subpart E, authorizes EPA to delegate authority to any state or local agency which submits an adequate regulatory program for implementation and enforcement of emission standards for hazardous air pollutants. The hazardous air pollutant standards are codified at 40 CFR parts 61 and 63.

III. What criteria must New Mexico's programs meet to be approved?

In order to receive delegation of NSPS, a state must develop and submit to the EPA a procedure for implementing and enforcing the NSPS in the state, and their regulations and resources must be adequate for the implementation and enforcement of the NSPS. EPA initially approved New Mexico's program for the delegation of NSPS on June 6, 1986 (51 FR 20648). EPA reviewed the laws of the State and the rules and regulations of the New Mexico Environmental Improvement Division (now the NMED) and determined the State's procedures, regulations and resources adequate for the implementation and enforcement of the Federal standards. The NSPS delegation was most recently updated on December 11, 2003 (68 FR 69036). This action notifies the public that EPA is updating NMED's delegation to implement and enforce certain additional NSPS.

As to the NESHAP standards in 40 CFR parts 61 and 63, section 112(l)(5) of the CAA enables EPA to approve state air toxics programs or rules to operate in place of the Federal air toxics program or rules. 40 CFR part 63, subpart E (subpart E) governs EPA's approval of State programs or rules under section 112(l).

EPA will approve the State's submittal of a program for implementation and enforcement of the NESHAPs if we find that:

(1) The State program is “no less stringent” than the corresponding Federal program or rule;

(2) The State has adequate authority and resources to implement the program;

(3) The schedule for implementation and compliance is sufficiently expeditious; and

(4) The program otherwise complies with Federal guidance.

In order to obtain approval of its program to implement and enforce Federal section 112 rules as promulgated without changes (straight delegation), a State must demonstrate that it meets the approval criteria of 40 CFR 63.91(d). 40 CFR 63.91(d)(3) provides that interim or final Title V program approval will satisfy the criteria of 40 CFR 63.91(d) for part 70 sources (sources required to obtain operating permits pursuant to Title V of the Clean Air Act).

IV. How did NMED meet the NSPS and NESHAPs program approval criteria?

As to the NSPS standards in 40 CFR part 60, NMED adopted the Federal standards via incorporation by reference. The NMED regulations are, therefore, at least as stringent as EPA's rules. See 40 CFR 60.10(a). Also, in the EPA initial approval of NSPS delegation, we determined that the State developed procedures for implementing and enforcing the NSPS in the State, and that the State's regulations and resources are adequate for the implementation and enforcement of the Federal standards. See 51 FR 20648 (June 6, 1986).

As to the NESHAP standards in 40 CFR parts 61 and 63, as part of its Title V submission NMED stated that it intended to use the mechanism of incorporation by reference to adopt unchanged Federal section 112 standards into its regulations. This commitment applied to both existing and future standards as they applied to part 70 sources. EPA's final interim approval of New Mexico's Title V operating permits program delegated the authority to implement certain NESHAPs, effective December 19, 1994 (59 FR 59656). On November 26, 1996, EPA promulgated final full approval of the State's operating permits program, effective January 27, 1997 (61 FR 60032). These interim and final title V program approvals satisfy the upfront approval criteria of 40 CFR 63.91(d). Under 40 CFR 63.91(d)(2), once a state has satisfied the up-front approval criteria, it needs only to reference the previous demonstration and reaffirm that it still meets the criteria for any subsequent submittals for delegation of the section 112 standards. NMED has affirmed that it still meets the up-front approval criteria.

V. What is being delegated?

By letter dated May 2, 2007, EPA received a request from New Mexico to update NMED's NSPS delegation and NESHAPs delegation. With certain exceptions noted in section VI below, New Mexico's request included NSPS in 40 CFR part 60, as amended between September 2, 2002 and November 30, 2006; NESHAPs in 40 CFR part 61, as amended between September 2, 2001 and November 30, 2006; and NESHAPs in 40 CFR part 63, as amended between September 2, 2002 and November 30, 2006.

By letter dated August 27, 2009, EPA received a second request from New Mexico to update NMED's NSPS delegation and NESHAPs delegation. With certain exceptions noted in section VI below, New Mexico's request included NSPS in 40 CFR part 60, and NESHAPs in 40 CFR parts 61 and 63, as amended between December 1, 2006 and January 31, 2009.

By letter dated August 31, 2011, EPA received a third request from New Mexico to update NMED's NSPS delegation and NESHAPs delegation. With certain exceptions noted in section VI below, New Mexico's request included NSPS in 40 CFR part 60, and NESHAPs in 40 CFR parts 61 and 63, as amended between February 1, 2009 and December 31, 2010.

By letter dated December 16, 2013, EPA received a fourth request from New Mexico to update NMED's NSPS delegation and NESHAPs delegation. With certain exceptions noted in section VI below, New Mexico's request included NSPS in 40 CFR part 60, as amended between January 1, 2011, and September 23, 2013; and NESHAPs in 40 CFR part 63, as amended between January 1, 2011 and August 29, 2013.

VI. What is not being delegated?

The following part 60, 61 and 63 authorities listed below are not delegated. All of the inquiries and requests concerning implementation and enforcement of the excluded standards in the State of New Mexico should be directed to the EPA Region 6 Office.

• 40 CFR part 60, subpart AAA (Standards of Performance for New Residential Wood Heaters);
• 40 CFR part 60, subpart HHHH (Emission Guidelines and Compliance Times for Coal-Fired Electric Steam Generating Units);
• 40 CFR part 61, subpart B (National Emission Standards for Radon Emissions from Underground Uranium Mines);
• 40 CFR part 61, subpart H (National Emission Standards for Emissions of Radionuclides Other Than Radon From Department of Energy Facilities);
• 40 CFR part 61, subpart I (National Emission Standards for Radionuclide Emissions from Federal Facilities Other Than Nuclear Regulatory Commission Licensees and Not Covered by Subpart H);
• 40 CFR part 61, subpart K (National Emission Standards for Radionuclide Emissions from Elemental Phosphorus Plants);
• 40 CFR part 61, subpart Q (National Emission Standards for Radon Emissions from Department of Energy facilities);
• 40 CFR part 61, subpart R (National Emission Standards for Radon Emissions from Phosphogypsum Stacks);
• 40 CFR part 61, subpart T (National Emission Standards for Radon Emissions from the Disposal of Uranium Mill Tailings); and
• 40 CFR part 61, subpart W (National Emission Standards for Radon Emissions from Operating Mill Tailings).

In addition, EPA cannot delegate to a State any of the Category II Subpart A authorities set forth in 40 CFR 63.91(g)(2). These include the following provisions: § 63.6(g), Approval of Alternative Non-Opacity Standards; § 63.6(h)(9), Approval of Alternative Opacity Standards; § 63.7(e)(2)(ii) and (f), Approval of Major Alternatives to Test Methods; § 63.8(f), Approval of Major Alternatives to Monitoring; and § 63.10(f), Approval of Major Alternatives to Recordkeeping and Reporting. Also, some Part 63 standards have certain provisions that cannot be delegated to the States. Therefore, any Part 63 standard that EPA is delegating to NMED that provides that certain authorities cannot be delegated are retained by EPA and not delegated. Furthermore, no authorities are delegated that require rulemaking in the Federal Register to implement, or where Federal overview is the only way to ensure national consistency in the application of the standards or requirements of CAA section 112. Finally, section 112(r), the accidental release program authority, is not being delegated by this approval.

In addition, this delegation to NMED to implement and enforce certain NSPS and NESHAPs does not extend to sources or activities located in Indian country, as defined in 18 U.S.C. 1151. Under this definition, EPA treats as reservations, trust lands validly set aside for the use of a Tribe even if the trust lands have not been formally designated as a reservation. Consistent with previous federal program approvals or delegations, EPA will continue to implement the NSPS and NESHAPs in Indian country because NMED has not submitted information to demonstrate authority over sources and activities located within the exterior boundaries of Indian reservations and other areas in Indian country.

VII. How will applicability determinations be made?

In approving the NSPS delegation, NMED will obtain concurrence from EPA on any matter involving the interpretation of section 111 of the CAA or 40 CFR part 60 to the extent that application, implementation, administration, or enforcement of these provisions have not been covered by prior EPA determinations or guidance. See 51 FR 20649 (June 6, 1986).

In approving the NESHAPs delegation, NMED will obtain concurrence from EPA on any matter involving the interpretation of section 112 of the CAA or 40 CFR parts 61 and 63 to the extent that application, implementation, administration, or enforcement of these provisions have not been covered by prior EPA determinations or guidance.

VIII. What authority does EPA have?

We retain the right, as provided by CAA section 111(c)(2), to enforce any applicable emission standard or requirement under section 111.

We retain the right, as provided by CAA section 112(l)(7), to enforce any applicable emission standard or requirement under section 112. EPA also has the authority to make certain decisions under the General Provisions (subpart A) of part 63. We are granting NMED some of these authorities, and retaining others, as explained in sections V and VI above. In addition, EPA may review and disapprove State determinations and subsequently require corrections. (See 40 CFR 63.91(g) and 65 FR 55810, 55823, September 14, 2000, as amended at 70 FR 59887, October 13, 2005; 72 FR 27443, May 16, 2007.)

Furthermore, we retain any authority in an individual emission standard that may not be delegated according to provisions of the standard. Also, listed in the footnotes of the part 63 delegation table at the end of this rule are the authorities that cannot be delegated to any State or local agency which we therefore retain.

Finally, we retain the authorities stated in the original delegation agreement. See 51 FR 20648-20650 (June 6, 1986).

IX. What information must NMED provide to EPA?

Under 40 CFR 60.4(b), all notifications under NSPS must be sent to both EPA and to NMED. Please send notifications and reports to Chief, Air/Toxics Inspection and Coordination Branch at the EPA Region 6 office.

NMED must provide any additional compliance related information to EPA, Region 6, Office of Enforcement and Compliance Assurance, within 45 days of a request under 40 CFR 63.96(a). In receiving delegation for specific General Provisions authorities, NMED must submit to EPA Region 6, on a semi-annual basis, copies of determinations issued under these authorities. For 40 CFR parts 61 and 63 standards, these determinations include: Section 63.1, Applicability Determinations; Section 63.6(e), Operation and Maintenance Requirements—Responsibility for Determining Compliance; Section 63.6(f), Compliance with Non-Opacity Standards—Responsibility for Determining Compliance; Section 63.6(h), Compliance with Opacity and Visible Emissions Standards—Responsibility for Determining Compliance; Sections 63.7(c)(2)(i) and (d), Approval of Site-Specific Test Plans; Section 63.7(e)(2)(i), Approval of Minor Alternatives to Test Methods; Section 63.7(e)(2)(ii) and (f), Approval of Intermediate Alternatives to Test Methods; Section 63.7(e)(iii), Approval of Shorter Sampling Times and Volumes When Necessitated by Process Variables or Other Factors; Sections 63.7(e)(2)(iv), (h)(2), and (h)(3), Waiver of Performance Testing; Sections 63.8(c)(1) and (e)(1), Approval of Site-Specific Performance Evaluation (Monitoring) Test Plans; Section 63.8(f), Approval of Minor Alternatives to Monitoring; Section 63.8(f), Approval of Intermediate Alternatives to Monitoring; Section 63.9 and 63.10, Approval of Adjustments to Time Periods for Submitting Reports; Section 63.10(f), Approval of Minor Alternatives to Recordkeeping and Reporting; Section 63.7(a)(4), Extension of Performance Test Deadline.

X. What is EPA's oversight role?

EPA must oversee NMED's decisions to ensure the delegated authorities are being adequately implemented and enforced. We will integrate oversight of the delegated authorities into the existing mechanisms and resources for oversight currently in place. If, during oversight, we determine that NMED made decisions that decreased the stringency of the delegated standards, then NMED shall be required to take corrective actions and the source(s) affected by the decisions will be notified, as required by 40 CFR 63.91(g)(1)(ii). We will initiate withdrawal of the program or rule if the corrective actions taken are insufficient. See 51 FR 20648 (June 6, 1986).

XI. Should sources submit notices to EPA or NMED?

All of the information required pursuant to the Federal NSPS and NESHAPs (40 CFR parts 60, 61 and 63) should be submitted by sources located outside the boundaries of Bernalillo County and areas outside of Indian country, directly to the NMED at the following address: New Mexico Environment Department, P.O. Box 5469, Santa Fe, New Mexico 87502-5469. The NMED is the primary point of contact with respect to delegated NSPS and NESHAPs. Sources do not need to send a copy to EPA. EPA Region 6 waives the requirement that notifications and reports for delegated standards be submitted to EPA in addition to NMED, in accordance with 40 CFR 63.9(a)(4)(ii) and 63.10(a)(4)(ii). Also, see 51 FR 20648 (June 6, 1986). For those standards that are not delegated, sources must continue to submit all appropriate information to EPA.

XII. How will unchanged authorities be delegated to NMED in the future?

In the future, NMED will only need to send a letter of request to update their delegation to EPA, Region 6, for those NSPS which they have adopted by reference. EPA will amend the relevant portions of the Code of Federal Regulations showing which NSPS standards have been delegated to NMED. Also, in the future, NMED will only need to send a letter of request for approval to EPA, Region 6, for those NESHAPs regulations that NMED has adopted by reference. The letter must reference the previous up-front approval demonstration and reaffirm that it still meets the up-front approval criteria. We will respond in writing to the request stating that the request for delegation is either granted or denied. A Federal Register action will be published to inform the public and affected sources of the delegation, indicate where source notifications and reports should be sent, and to amend the relevant portions of the Code of Federal Regulations showing which NESHAP standards have been delegated to NMED.

XIII. Final Action

The public was provided the opportunity to comment on the proposed approval of the program and mechanism for delegation of section 112 standards, as they apply to part 70 sources, May 19, 1994, for the proposed interim approval of NMED's Title V operating permits program; and on November 26, 1996, for the proposed final approval of NMED's Title V operating permits program. In EPA's final full approval of New Mexico's Operating Permits Program on November 26, 1996, the EPA discussed the public comments on the proposed final delegation of the Title V operating permits program. In today's action, the public is given the opportunity to comment on the approval of NMED's request for delegation of authority to implement and enforce certain section 112 standards for all sources (both part 70 and non-part 70 sources) which have been adopted by reference into New Mexico's state regulations. However, the Agency views the approval of these requests as a noncontroversial action and anticipates no adverse comments. Therefore, EPA is publishing this rule without prior proposal. However, in the “Proposed Rules” section of today's Federal Register publication, EPA is publishing a separate document that will serve as the proposal to approve the program and NESHAPs delegation of authority described in this action if adverse comments are received. This action will be effective April 3, 2015 without further notice unless the Agency receives relevant adverse comments by March 4, 2015.

If EPA receives relevant adverse comments, we will publish a timely withdrawal in the Federal Register informing the public the rule will not take effect with respect to the updated NESHAPs delegation. We will address all public comments in a subsequent final rule based on the proposed rule. The EPA will not institute a second comment period on this action. Any parties interested in commenting must do so at this time. Please note that if we receive relevant adverse comment on an amendment, paragraph, or section of this rule and if that provision may be severed from the remainder of the rule, we may adopt as final those provisions of the rule that are not the subject of a relevant adverse comment.

XIV. Statutory and Executive Order Reviews

Under Executive Order 12866 (58 FR 51735, October 4, 1993), this action is not a “significant regulatory action” and therefore is not subject to review by the Office of Management and Budget. For this reason, this action is also not subject to Executive Order 13211, “Actions Concerning Regulations That Significantly Affect Energy Supply, Distribution, or Use” (66 FR 28355, May 22, 2001). This action merely approves state law as meeting Federal requirements and imposes no additional requirements beyond those imposed by state law. Accordingly, the Administrator certifies that this rule will not have a significant economic impact on a substantial number of small entities under the Regulatory Flexibility Act (5 U.S.C. 601 et seq.). Because this rule approves pre-existing requirements under state law and does not impose any additional enforceable duty beyond that required by state law, it does not contain any unfunded mandate or significantly or uniquely affect small governments, as described in the Unfunded Mandates Reform Act of 1995 (Pub. L. 104-4).

The delegation is not approved to apply on any Indian reservation land or in any other area where EPA or an Indian tribe has demonstrated that a tribe has jurisdiction. In addition, this rule does not have tribal implications as specified by Executive Order 13175 (65 FR 67249, November 9, 2000), because the delegation is not approved to apply in Indian country located in the State, and the EPA notes that it will not impose substantial direct costs on tribal governments or preempt tribal law. This action also does not have Federalism implications because it does not have substantial direct effects on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government, as specified in Executive Order 13132 (64 FR 43255, August 10, 1999). This action merely approves a state request to receive delegation of certain Federal standards, and does not alter the relationship or the distribution of power and responsibilities established in the Clean Air Act. This rule also is not subject to Executive Order 13045 “Protection of Children from Environmental Health Risks and Safety Risks” (62 FR 19885, April 23, 1997), because it is not economically significant.

In reviewing delegation submissions, EPA's role is to approve submissions, provided that they meet the criteria of the Clean Air Act. In this context, in the absence of a prior existing requirement for the State to use voluntary consensus standards (VCS), EPA has no authority to disapprove a delegation submission for failure to use VCS. It would thus be inconsistent with applicable law for EPA to use VCS in place of a delegation submission that otherwise satisfies the provisions of the Clean Air Act. Thus, the requirements of section 12(d) of the National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 note) do not apply. This rule does not impose an information collection burden under the provisions of the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.).

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 rule 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. 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 April 3, 2015. Filing a petition for reconsideration by the Administrator of this final rule does not affect the finality of this rule 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. This action may not be challenged later in proceedings to enforce its requirements. (See section 307(b)(2)).

List of Subjects

40 CFR Part 60

• Environmental protection
• Administrative practice and procedure
• Air pollution control
• Intergovernmental relations
• Reporting and recordkeeping requirements

40 CFR Part 61

• Environmental protection
• Administrative practice and procedure
• Air pollution control
• Arsenic
• Benzene
• Beryllium
• Hazardous substances
• Mercury
• Intergovernmental relations
• Reporting and recordkeeping requirements
• Vinyl chloride

40 CFR Part 63

• Environmental protection
• Administrative practice and procedure
• Air pollution control
• Hazardous substances
• Intergovernmental relations
• Reporting and recordkeeping requirements

For the reasons stated in the preamble, 40 CFR parts 60, 61, and 63 are amended as follows:

PART 60—STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES

1. The authority citation for part 60 continues to read as follows:

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

2. Section 60.4 is amended by revising paragraph (b)(GG) introductory text, and revising paragraph (e)(1) to read as follows:

PART 61—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS

3. The authority citation for part 61 continues to read as follows:

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

Subpart A—General Provisions

4. Section 61.04 is amended by revising paragraphs (b)(GG) introductory text and (c)(6)(iii) to read as follows:

PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES

5. The authority citation for part 63 continues to read as follows:

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

Subpart E—Approval of State Programs and Delegation of Federal Authorities

6. Section 63.99 is amended by revising paragraph (a)(32)(i) to read as follows: