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###### Environmental Protection Agency

          - 40 CFR Part 52
          - [EPA-R04OAR-2010-0722-201108; FRL-9282-5]

# AGENCY:

Environmental Protection Agency (EPA).

# ACTION:

Proposed rule.

# SUMMARY:

EPA is proposing to approve the State Implementation Plan (SIP), submitted by the State of Mississippi, through the Department of Environmental Quality (DEQ), as demonstrating that Mississippi meets the requirements of sections 110(a)(1) and (2) of the Clean Air Act (CAA or Act) for the 1997 8-hour ozone national ambient air quality standard (NAAQS). Section 110(a) of the CAA requires that each state adopt and submit a SIP for the implementation, maintenance and enforcement of each NAAQS promulgated by the EPA, which is commonly referred to as an “infrastructure” SIP. Mississippi certified that the Mississippi SIP contains provisions that ensure the 1997 8-hour ozone NAAQS are implemented, enforced, and maintained in Mississippi (hereafter referred to as “infrastructure submission”). Mississippi's infrastructure submission, provided to EPA on December 7, 2007, addressed all the required infrastructure elements for the 1997 8-hour ozone NAAQS.

# DATES:

Written comments must be received on or before April 18, 2011.

# ADDRESSES:

Submit your comments, identified by Docket ID No. EPA-R04-OAR-2010-0722, by one of the following methods:

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

                        2.                         *E-mail: benjamin.lynorae@epa.gov.*

                        3.                         *Fax:*                         (404) 562-9140.                    

                        4.                         *Mail:*                         “EPA-R04-OAR-2010-0722,” Regulatory Development Section, Air Planning Branch, Air, Pesticides and Toxics Management Division, U.S. Environmental Protection Agency, Region 4, 61 Forsyth Street, SW., Atlanta, Georgia 30303-8960.                    

                        5.                         *Hand Delivery or Courier:*                         Lynorae Benjamin, Regulatory Development Section, Air Planning Branch, Air, Pesticides and Toxics Management Division, U.S. Environmental Protection Agency, Region 4, 61 Forsyth Street, SW., Atlanta, Georgia 30303-8960. Such deliveries are only accepted during the Regional Office's normal hours of operation. The Regional Office's official hours of business are Monday through Friday, 8:30 to 4:30, excluding federal holidays.                    

*Instructions:*                         Direct your comments to Docket ID No. EPA-R04-OAR-2010-0722. 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 through                         *http://www.regulations.gov*                         or e-mail, information that you consider to be CBI or otherwise protected. 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 e-mail comment directly to EPA without going through                         *http://www.regulations.gov,*                         your e-mail address will be automatically captured and included as part of the comment                               ( print page 14632)                            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 and with any disk or CD-ROM you submit. 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, 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:*                         All documents in the electronic docket are listed in the                         *http://www.regulations.gov*                         index. Although listed in the index, some information is not publicly available,                         *i.e.,*                         CBI or other information whose disclosure is restricted by statute. Certain other material, such as copyrighted material, is not placed on the Internet and will be publicly available only in hard copy form. Publicly available docket materials are available either electronically in                         *http://www.regulations.gov*                         or in hard copy at the Regulatory Development Section, Air Planning Branch, Air, Pesticides and Toxics Management Division, U.S. Environmental Protection Agency, Region 4, 61 Forsyth Street, SW., Atlanta, Georgia 30303-8960. EPA requests that if at all possible, you contact the person listed in the                         **FOR FURTHER INFORMATION CONTACT**                         section to schedule your inspection. The Regional Office's official hours of business are Monday through Friday, 8:30 to 4:30, excluding federal holidays.                    

# FOR FURTHER INFORMATION CONTACT:

                        Nacosta C. Ward, Regulatory Development Section, Air Planning Branch, Air, Pesticides and Toxics Management Division, U.S. Environmental Protection Agency, Region 4, 61 Forsyth Street, SW., Atlanta, Georgia 30303-8960. The telephone number is (404) 562-9140. Ms. Ward can also be reached via electronic mail at                         *ward.nacosta@epa.gov.*

## Table of Contents

I. Background

II. What elements are required under Sections 110(a)(1) and (2)?

III. What is EPA's analysis of how Mississippi addressed the elements of Sections 110(a)(1) and (2) “infrastructure” provisions?

IV. Proposed Action

V. Statutory and Executive Order Reviews

## I. Background

                        On July 18, 1997, EPA promulgated a new NAAQS for ozone based on 8-hour average concentrations. The 8-hour averaging period replaced the previous 1-hour averaging period, and the level of the NAAQS was changed from 0.12 parts per million (ppm) to 0.08 ppm.                         *See*62 FR 38856. Pursuant to section 110(a)(1) of the CAA, states are required to submit SIPs meeting the requirements of section 110(a)(2) within three years after promulgation of a new or revised NAAQS. Sections 110(a)(1) and (2) require states to address basic SIP requirements, including emissions inventories, monitoring, and modeling to assure attainment and maintenance of the NAAQS. States were required to submit such SIPs for the 1997 8-hour ozone NAAQS to EPA no later than June 2000. However, intervening litigation over the 1997 8-hour ozone NAAQS created uncertainty about how to proceed and many states did not provide the required “infrastructure” SIP submission for these newly promulgated NAAQS.                    

                        On March 4, 2004, Earthjustice submitted a notice of intent to sue related to EPA's failure to issue findings of failure to submit related to the “infrastructure” requirements for the 1997 8-hour ozone NAAQS. EPA entered into a consent decree with Earthjustice which required EPA, among other things, to complete a                         **Federal Register**                         notice announcing EPA's determinations pursuant to section 110(k)(1)(B) as to whether each state had made complete submissions to meet the requirements of section 110(a)(2) for the 1997 8-hour ozone NAAQS by December 15, 2007. Subsequently, EPA received an extension of the date to complete this                         **Federal Register**                         notice until March 17, 2008, based upon agreement to make the findings with respect to submissions made by January 7, 2008. In accordance with the consent decree, EPA made completeness findings for each state based upon what the Agency received from each state as of January 7, 2008.                    

                        On March 27, 2008, EPA published a final rulemaking entitled, “Completeness Findings for Section 110(a) State Implementation Plans; 8-Hour Ozone NAAQS,” making a finding that each state had submitted or failed to submit a complete SIP that provided the basic program elements of section 110(a)(2) necessary to implement the 1997 8-hour ozone NAAQS.                         *See*73 FR 16205. For those states that did receive findings, the findings of failure to submit for all or a portion of a state's implementation plan established a 24-month deadline for EPA to promulgate a Federal Implementation Plan to address the outstanding SIP elements unless, prior to that time, the affected states submit, and EPA approves, the required SIPs.                    

The findings that all or portions of a state's submission are complete established a 12-month deadline for EPA to take action upon the complete SIP elements in accordance with section 110(k). Mississippi's infrastructure submission was received by EPA on December 7, 2007, and was determined to be complete on March 27, 2008. Mississippi was among other states that did not receive a finding of failure to submit because it provided a complete submission to EPA to address the infrastructure elements for the 1997 8-hour ozone NAAQS by March 1, 2008. Today's action is proposing to approve Mississippi's infrastructure submission for which EPA made the completeness determination on March 27, 2008. This action is not approving any specific rule, but rather proposing that Mississippi's already approved SIP meets certain CAA requirements.

## II. What elements are required under Sections 110(a)(1) and (2)?

Section 110(a) of the CAA requires states to submit SIPs to provide for the implementation, maintenance, and enforcement of a new or revised NAAQS within three years following the promulgation of such NAAQS, or within such shorter period as EPA may prescribe. Section 110(a) imposes the obligation upon states to make a SIP submission to EPA for a new or revised NAAQS, but the contents of that submission may vary depending upon the facts and circumstances. In particular, the data and analytical tools available at the time the state develops and submits the SIP for a new or revised NAAQS affects the content of the submission. The contents of such SIP submissions may also vary depending upon what provisions the state's existing SIP already contains. In the case of the 1997 8-hour ozone NAAQS, states typically have met the basic program elements required in section 110(a)(2) through earlier SIP submissions in connection with previous ozone NAAQS.

                        More specifically, section 110(a)(1) provides the procedural and timing requirements for SIPs. Section 110(a)(2) lists specific elements that states must meet for “infrastructure” SIP requirements related to a newly established or revised NAAQS. As mentioned above, these requirements include SIP infrastructure elements such as modeling, monitoring, and                               ( print page 14633)                            emissions inventories that are designed to assure attainment and maintenance of the NAAQS. The requirements that are the subject of this proposed rulemaking are listed below [1]                                                  and in EPA's October 2, 2007, memorandum entitled “Guidance on SIP Elements Required Under Section 110(a)(1) and (2) for the 1997 8-Hour Ozone and PM2.5                         National Ambient Air Quality Standards.”                    
      - 110(a)(2)(A): Emission limits and other control measures.
      - 110(a)(2)(B): Ambient air quality monitoring/data system.
      - 110(a)(2)(C): Program for enforcement of control measures. [2]  
      - 110(a)(2)(D): Interstate transport. [3]  
      - 110(a)(2)(E): Adequate resources.
      - 110(a)(2)(F): Stationary source monitoring system.
      - 110(a)(2)(G): Emergency power.
      - 110(a)(2)(H): Future SIP revisions.
      - 110(a)(2)(I): Areas designated nonattainment and meet the applicable requirements of part D. [4]  
      - 110(a)(2)(J): Consultation with government officials; public notification; and PSD and visibility protection.
      - 110(a)(2)(K): Air quality modeling/data.
      - 110(a)(2)(L): Permitting fees.
      - 110(a)(2)(M): Consultation/participation by affected local entities.

## III. What is EPA's analysis of how Mississippi addressed the elements of Sections 110(a)(1) and (2) “infrastructure” provisions?

Mississippi's infrastructure submission addresses the provisions of sections 110(a)(1) and (2) as described below.

*1. 110(a)(2)(A): Emission limits and other control measures:*                         Mississippi's infrastructure submission provides an overview of the provisions of the Mississippi Air Pollution Control (APC) Regulations relevant to air quality control. The regulations described below have been federally approved in the Mississippi SIP and include enforceable emission limitations and other control measures. Regulation APC-S-1—                        *Air Emission Regulations for the Prevention, Abatement, and Control of Air Contaminants*                         and Regulation APC-S-3—                        *Regulations for the Prevention of Air Pollution Emergency Episodes*                         generally authorizes DEQ to adopt rules for the control of air pollution, including those necessary to obtain EPA approval under section 110 of the CAA. The most recent federally approved revision in this regulation was on October 3, 2007 (72 FR 56268). EPA has made the preliminary determination that the provisions contained in this chapter and Mississippi's practices are adequate to protect the 1997 8-hour ozone NAAQS.                    

In this action, EPA is not proposing to approve or disapprove any existing state provisions with regard to excess emissions during startup, shutdown, or malfunction (SSM) of operations at a facility. EPA believes that a number of states have SSM provisions which are contrary to the CAA and existing EPA guidance, “State Implementation Plans: Policy Regarding Excess Emissions During Malfunctions, Startup, and Shutdown” (September 20, 1999), and the Agency plans to address such state regulations in the future. In the meantime, EPA encourages any state having a deficient SSM provision to take steps to correct it as soon as possible.

Additionally, in this action, EPA is not proposing to approve or disapprove any existing state rules with regard to director's discretion or variance provisions. EPA believes that a number of states have such provisions which are contrary to the CAA and existing EPA guidance (52 FR 45109 (November 24, 1987)), and the Agency plans to take action in the future to address such state regulations. In the meantime, EPA encourages any state having a director's discretion or variance provision which is contrary to the CAA and EPA guidance to take steps to correct the deficiency as soon as possible.

*2. 110(a)(2)(B) Ambient air quality monitoring/data system:*                         Mississippi's infrastructure submission provides information Regulation APC-S-1—                        *Air Emission Regulations for the Prevention, Abatement, and Control of Air Contaminants,*                         with regard to the monitoring program within the State. The most recent federally approved revision in this section was on October 3, 2007 (72 FR 56268). Annually, EPA approves the ambient air monitoring network plan for the state agencies. On July 8, 2010, Mississippi submitted its plan to EPA. On December 14, 2010, EPA approved Mississippi's monitoring network plan. Mississippi's approved monitoring network plan can be accessed at                         *http://www.regulations.gov*                         using Docket ID No. EPA-R04-OAR-2010-0722. EPA has made the preliminary determination that Mississippi's SIP and practices are adequate for the ambient air quality monitoring and data system related to the 1997 8-hour ozone NAAQS.                    

*3. 110(a)(2)(C) Program for enforcement of control measures including**review of proposed new sources:*                         In Regulation APC-S-1—                        *Air Emission Regulations for the Prevention, Abatement, and Control of Air Contaminants*                         of Mississippi's SIP, a description of Mississippi's statutory authority to enforce regulations relating to attainment and maintenance of air quality is included. Additionally, Mississippi submitted a SIP revision on November 28, 2007, which addresses the Ozone Implementation New Source Review (NSR) Update requirements to include nitrogen oxides (NOX) as an ozone precursor for permitting purposes for prevention of significant deterioration (PSD) and nonattainment NSR. Specifically, the Ozone Implementation NSR Update requirements included changes to major source thresholds for sources in certain classes of nonattainment areas, changes to offset ratios for marginal, moderate, serious, severe, and extreme ozone nonattainment areas, provisions addressing offset requirements for facilities that shut down or curtail operation, and a requirement stating that NOX                         emissions are ozone precursors. EPA published a final action approving Mississippi's revisions which incorporate NOX                         as an ozone precursor on December 20, 2010 (75 FR 79300).                              ( print page 14634)    

                        In Regulation APC-S-5—                        *Regulations for the Prevention of Significant Deterioration for Air Quality,*                         Mississippi incorporates by reference the regulations found at 40 CFR 52.21 as of June 15, 2007, and 40 CFR 52.21(b)(1)(i)(a) and (b)(1)(iii)(t). These incorporated provisions include amendments to major source thresholds for sources in certain classes of nonattainment areas, changes to offset ratios for marginal, moderate, serious, severe, and extreme ozone nonattainment areas, provisions addressing offset requirements for facilities that shut down or curtail operation, and a requirement stating that NOX                         emissions are ozone precursors.                    

                        EPA published a final action revising Mississippi's greenhouse gas (GHG) regulations on December 29, 2010 (75 FR 81858). The revisions incorporate by reference the Tailoring Rule provisions at 40 CFR 52.21 (as amended June 3, 2010, and effective August 2, 2010), into the Mississippi SIP (APC-S-5—                        *Regulations for the Prevention of Significant Deterioration for Air Quality*) to address the thresholds for GHG permitting applicability. Additionally, they also incorporate administrative changes related to Mississippi's pre-existing exclusion of certain provisions of the federal PSD regulations from its SIP, specifically, provisions pertaining to the “reasonable possibility” standard, “clean units,” and “pollution control projects.” EPA has made the preliminary determination that Mississippi's SIP and practices are adequate for program enforcement of control measures including review of proposed new sources related to the 1997 8-hour ozone NAAQS.                    

In this action, EPA is proposing to approve Mississippi's infrastructure SIP for the 8-hour ozone NAAQS with respect to the general requirement in section 110(a)(2)(C) to include a program in the SIP that regulates the modification and construction of any stationary source as necessary to assure that the NAAQS are achieved. EPA is not proposing to approve or disapprove the state's existing minor NSR program itself to the extent that it is inconsistent with EPA's regulations governing this program. EPA believes that a number of states may have minor NSR provisions that are contrary to the existing EPA regulations for this program. EPA intends to work with states to reconcile state minor NSR programs with EPA's regulatory provisions for the program. The statutory requirements of section 110(a)(2)(C) provide for considerable flexibility in designing minor NSR programs, and EPA believes it may be time to revisit the regulatory requirements for this program to give the states an appropriate level of flexibility to design a program that meets their particular air quality concerns, while assuring reasonable consistency across the country in protecting the NAAQS with respect to new and modified minor sources.

EPA has made the preliminary determination that Mississippi's SIP and practices are adequate for program enforcement of control measures including review of proposed new sources related to the 1997 8-hour ozone NAAQS.

*4. 110(a)(2)(D)(ii) Interstate and International transport provisions:*                         In Regulation APC-S-2—                        *Permit Regulations for the Construction and/or Operation of Air Emissions Equipment,*                         Mississippi outlines how it will notify neighboring states of potential impacts from new or modified sources. The most recent federally approved revision in this regulation was on July 10, 2006 (71 FR 38773). Mississippi does not have any pending obligation under section 115 and 126. EPA has made the preliminary determination that Mississippi's SIP and practices are adequate for insuring compliance with the applicable requirements relating to interstate and international pollution abatement for the 1997 8-hour ozone NAAQS.                    

In this action, EPA is proposing to approve Mississippi's infrastructure SIP for the 8-hour ozone NAAQS with respect to the general requirement in section 110(a)(2)(C) to include a program in the SIP that regulates the modification and construction of any stationary source as necessary to assure that the NAAQS are achieved. EPA is not proposing to approve or disapprove the state's existing minor NSR program itself to the extent that it is inconsistent with EPA's regulations governing this program. EPA believes that a number of states may have minor NSR provisions that are contrary to the existing EPA regulations for this program. EPA intends to work with states to reconcile state minor NSR programs with EPA's regulatory provisions for the program. The statutory requirements of section 110(a)(2)(C) provide for considerable flexibility in designing minor NSR programs, and EPA believes it may be time to revisit the regulatory requirements for this program to give the states an appropriate level of flexibility to design a program that meets their particular air quality concerns, while assuring reasonable consistency across the country in protecting the NAAQS with respect to new and modified minor sources.

*5. 110(a)(2)(E) Adequate resources:*                         DEQ is responsible for adopting air quality rules, revising SIPs, developing and tracking the budget, establishing the title V fees, and other planning needs. Annually, states update grant commitments based on current SIP requirements, air quality planning, and applicable requirements related NAAQS, including the 1997 8-hour ozone NAAQS. On April 8, 2010, EPA submitted a letter to Mississippi outlining 105 grant commitments and current status of those commitments for fiscal year 2009. The letter EPA submitted to Mississippi can be accessed at                         *http://www.regulations.gov*                         using Docket ID No. EPA-R04-OAR-2010-0722. There were no outstanding issues, therefore Mississippi's grants were finalized and closed out. EPA has made the preliminary determination that Mississippi has adequate resources for implementation of the 1997 8-hour ozone NAAQS.                    

*6.**110(a)(2)(F) Stationary source monitoring system:*                         Mississippi's infrastructure submission describes how to establish requirements for compliance testing by emissions sampling and analysis, and for emissions and operation monitoring to ensure the quality of data in the State. Mississippi uses these data to track progress towards maintaining the NAAQS, develop control and maintenance strategies, identify sources and general emission levels, and determine compliance with emission regulations and additional EPA requirements. This is outlined in Regulation APC-S-2—                        *Permit Regulations for the Construction and/or Operation of Air Emissions Equipment*                         of the Mississippi air pollution control regulations.                    

                        Additionally, the National Emissions Inventory (NEI) is EPA's central repository for air emissions data. EPA published the Air Emissions Reporting Rule (AERR) on December 5, 2008, which modified the requirements for collecting and reporting air emissions data (73 FR 76539). The AERR shortened the time states had to report emissions data from 17 to 12 months, giving states one calendar year to submit emissions data. All states are required to submit a comprehensive emissions inventory every three years and report emissions for certain larger sources annually through EPA's online Emissions Inventory System (EIS). States report emissions data for the six criteria pollutants and the precursors that form them—nitrogen oxides, sulfur dioxide, ammonia, lead, carbon monoxide, particulate matter, and volatile organic compounds. Many                               ( print page 14635)                            states also voluntarily report emissions of hazardous air pollutants. Mississippi made its latest update to the NEI on November 1, 2010. EPA compiles the emissions data, supplementing it where necessary, and releases it to the general public through the Web site                         *http://www.epa.gov/​ttn/​chief/​eiinformation.html*. EPA has made the preliminary determination that Mississippi's SIP and practices are adequate for the stationary source monitoring systems related to the 1997 8-hour ozone NAAQS.                    

*7.**110(a)(2)(G) Emergency power:*                         Mississippi's infrastructure submission provides an overview of the Mississippi Air Pollution Control Regulations, specifically Regulation APC-S-3—                        *Regulations for the Prevention of Air Pollution Emergency Episodes.*                         The regulations contained in this section have been adopted to prevent the excessive build-up of air pollutants during air pollution episodes and to prevent the occurrence of an emergency due to the effects of pollutants on human health. All offices of local, county, and state governments, including authorities, joint meetings, and any other public body are notified as appropriate in this regulation. The episode criteria specified for ozone are based on a 1-hour average ozone level at a monitoring site. These criteria have previously been approved by EPA. EPA has made the preliminary determination that these criteria are adequate to address ozone emergency episodes for the 1997 8-hour ozone NAAQS, and thus, that Mississippi's SIP and practices appear adequate for emergency powers related to the 1997 8-hour ozone NAAQS.                    

*8.**110(a)(2)(H) Future SIP revisions:*                         As previously discussed, DEQ is responsible for adopting air quality rules and revising SIPs as needed to attain or maintain the NAAQS. DEQ is responsible for the adoption, modification, repeal, promulgation of air quality rules in Mississippi. They are also responsible for the enforcement and implementation of regulations in Mississippi. Mississippi has the ability and authority to respond to calls for SIP revisions, and has provided a number of SIP revisions over the years for implementation of the NAAQS. Specific to the 1997 8-hour ozone NAAQS, Mississippi has provided the following submissions:                    
      - August 8, 2005, SIP Revision (EPA approval, see 71 FR 38773 , July 10, 2006) Prevention of Significant Deterioration/New Source Review;
      - November 28, 2007, SIP Revision (EPA approval, see 75 FR 79300 , October 7, 2010)—110(a)(2)(D)(i) Plan (NO X                          as a precursor);                    
      - December 7, 2007, SIP revision 1997 Infrastructure 110(a)(2)—Ozone.

Mississippi has no areas designated as nonattainment for the 1997 8-hour ozone NAAQS. EPA has made the preliminary determination that Mississippi's SIP and practices adequately demonstrate a commitment to provide future SIP revisions related to the 1997 8-hour ozone NAAQS when necessary.

*9.**110(a)(2)(J) (121 consultation) Consultation with government officials: Mississippi Code Annotated Regulation 49-17-3*                         provides for cooperation with other agencies of the State, agencies of other states, and the federal government for the prevention, abatement and control of new or existing air pollution. Additionally, DEQ submitted a regional haze plan which outlines its consultation practices with Federal Land Managers. EPA has made the preliminary determination that Mississippi's SIP and practices adequately demonstrate consultation with government officials related to the 1997 8-hour ozone NAAQS when necessary.                    

*10.**110(a)(2)(J) (127 public notification) Public notification:*                         DEQ's emergency episode provisions, discussed above in 110(a)(2)(G), provide for notification to the public when the NAAQS, including the ozone NAAQS, are exceeded. Additionally, during the ozone season, DEQ reports daily air quality information on its Web site at:                         *http://opc.deq.state.ms.us/​aqi/​specifically*                         for the Jackson Metropolitan Area, DeSoto County, and the Mississippi Gulf Coast. EPA has made the preliminary determination that Mississippi's SIP and practices adequately demonstrate the State's ability to provide public notification related to the 1997 8-hour ozone NAAQS when necessary.                    

*11.**110(a)(2)(J) (PSD) PSD and visibility protection:*                         Mississippi demonstrates its authority to regulate new and modified sources of ozone precursors, volatile organic compounds (VOCs), and NOX, to assist in the protection of air quality in Regulation APC-S-5—                        *Regulations for the Prevention of Significant Deterioration for Air Quality.*

                        In Regulation APC-S-5—                        *Regulations for the Prevention of Significant Deterioration for Air Quality,*                         Mississippi incorporates by reference the regulations found at 40 CFR 52.21 as of June 15, 2007, and 40 CFR 52.21(b)(1)(i)(a) and (b)(1)(iii)(t). These provisions included amendments to major source thresholds for sources in certain classes of nonattainment areas, changes to offset ratios for marginal, moderate, serious, severe, and extreme ozone nonattainment areas, provisions addressing offset requirements for facilities that shut down or curtail operation, and a requirement stating that NOX                         emissions are ozone precursors.                    

                        Mississippi submitted a SIP revision on November 28, 2007, which addresses the Ozone Implementation NSR Update requirements to include NOX                         as an ozone precursor for permitting purposes. Specifically, the Ozone Implementation NSR Update requirements included changes to major source thresholds for sources in certain classes of nonattainment areas, changes to offset ratios for marginal, moderate, serious, severe, and extreme ozone nonattainment areas, provisions addressing offset requirements for facilities that shut down or curtail operation, and a requirement stating that NOX                         emissions are ozone precursors. Specifically, this SIP revision incorporates changes to Regulation APC-S-5—                        *Regulations for the Prevention of Significant Deterioration for Air Quality.*                         EPA published a final action approving Mississippi's rulemaking to incorporate changes to this regulation in the Mississippi SIP on December 20, 2010 (                        *See*75 FR 79300).                    

                        With regard to the applicable requirements for visibility protection, EPA recognizes that states are subject to visibility and regional haze program requirements under Part C of the Act (which includes sections 169A and 169B). In the event of the establishment of a new NAAQS, however, the visibility and regional haze program requirements under part C do not change. Thus, EPA finds that there is no new visibility obligation “triggered” under section 110(a)(2)(J) when a new NAAQS becomes effective. This would be the case even in the event a secondary PM2.5                         NAAQS for visibility is established, because this NAAQS would not affect visibility requirements under part C. Mississippi has submitted a SIP revision for approval to satisfy the requirements of the CAA Section 169A, and the regional haze and best available retrofit technology rules contained in 40 CFR 51.308. This SIP revision is currently under review and will be acted on in a separate action. EPA has made the preliminary determination that Mississippi's SIP and practices adequately demonstrate the State's ability to implement PSD programs and to provide for visibility protection related to the 1997 8-hour ozone NAAQS when necessary.                              ( print page 14636)    

*12.**110(a)(2)(K) Air quality and modeling/data:*                         DEQ has authority pursuant to 40 CFR part 51.21 to conduct air quality modeling and report the results of such modeling to EPA, as incorporated by reference in the Mississippi Air Pollution Control Regulations at Regulation APC-S-5—                        *Regulations for the Prevention of Significant Deterioration for Air Quality.*                         Additionally, Mississippi supports a regional effort to coordinate the development of emissions inventories and conduct regional modeling for several NAAQS, including the 1997 8-hour ozone NAAQS, for the Southeastern states. This regulation demonstrates that Mississippi has the authority to provide relevant data for the purpose of predicting the effect on ambient air quality of the 8-hour Ozone NAAQS. EPA has made the preliminary determination that Mississippi's SIP and practices adequately demonstrate the DEQ's ability to provide for air quality and modeling, along with analysis of the associated data, related to the 1997 8-hour ozone NAAQS when necessary.                    

*13.**110(a)(2)(L) Permitting fees:*                         Mississippi addresses the review of construction permits as previously discussed in 110(a)(2)(C) above. Permitting fees are collected through the State's title V fees program, which has been federally approved. EPA has made the preliminary determination that Mississippi's SIP and practices adequately provide for permitting fees related to the 1997 8-hour ozone NAAQS when necessary.                    

*14. 110(a)(2)(M) Consultation/participation by affected local entities:*                         DEQ coordinates with local governments affected by the SIP. Specifically, as outlined in Section IV of Regulation APC-S-2,                         *Public Participation and Public Availability of Information,*                         Mississippi requires that State and local air pollution control agencies be notified of modifications to stationary sources or the construction of new sources within their region of jurisdiction. EPA has made the preliminary determination that Mississippi's SIP and practices adequately demonstrate consultation and participation by affected local political subdivisions related to the 1997 8-hour ozone NAAQS when necessary.                    

## IV. Proposed Action

As described above, Mississippi has addressed the elements of the CAA 110(a)(1) and (2) SIP requirements pursuant to EPA's October 2, 2007, guidance to ensure that the 1997 8-hour ozone NAAQS are implemented, enforced, and maintained in Mississippi. EPA is proposing to approve Mississippi's infrastructure submission for the 1997 8-hour ozone NAAQS because this submission is consistent with section 110 of the CAA.EPA is proposing today's action to satisfy the Agency's statutory obligations under section 110(k) of the CAA to act upon the state submitted plans described herein.

## V. Statutory and Executive Order Reviews

Under the CAA, the Administrator is required to approve a SIP submission that complies with the provisions of the 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 CAA. Accordingly, this proposed 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 proposed action:
      - Is not a “significant regulatory action” subject to review by the Office of Management and Budget under Executive 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 ( Pub. L. 104-4 );
      - Does not have Federalism implications as specified in Executive Order 13132  ( 64 FR 43255 , August 10, 1999);
      - Is not an economically significant regulatory action based on health or safety risks subject to Executive Order 13045  ( 62 FR 19885 , April 23, 1997);
      - Is not a significant regulatory action subject to Executive 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 CAA; 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, under Executive Order 12898  ( 59 FR 7629 , February 16, 1994).

In addition, this proposed 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 Mississippi, and EPA notes that it will not impose substantial direct costs on tribal governments or preempt tribal law.

# List of Subjects in 40 CFR Part 52

        - Environmental protection
        - Air pollution control
        - Intergovernmental relations
        - Nitrogen dioxide
        - Ozone
        - Reporting and recordkeeping requirements
        - Volatile organic compounds

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

Dated: March 7, 2011.

A. Stanley Meiburg,

Acting Regional Administrator, Region 4.

# Footnotes

1.                                 Two elements identified in section 110(a)(2) are not governed by the three year submission deadline of section 110(a)(1) because SIPs incorporating necessary local nonattainment area controls are not due within three years after promulgation of a new or revised NAAQS, but rather due at the time the nonattainment area plan requirements are due pursuant to section 172. These requirements are: (1) Submissions required by section 110(a)(2)(C) to the extent that subsection refers to a permit program as required in part D Title I of the CAA, and (2) submissions required by section 110(a)(2)(I) which pertain to the nonattainment planning requirements of part D, Title I of the CAA. Today's proposed rulemaking does not address infrastructure elements related to section 110(a)(2)(I) or the nonattainment planning requirements of 110(a)(2)(C).                        
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2.                                 This rulemaking only addresses requirements for this element as they relate to attainment areas.                        
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3.                                 Today's proposed rule does not address element 110(a)(2)(D)(i) (Interstate Transport) for the 1997 8-hour ozone NAAQS. Interstate transport requirements were formerly addressed by Mississippi consistent with the Clean Air Interstate Rule (CAIR). On December 23, 2008, CAIR was remanded by the DC Circuit Court of Appeals, without vacatur, back to EPA.                             *See North Carolina*                             v.                             *EPA,*                             531 F.3d 896 (DC Cir. 2008). Prior to this remand, EPA took final action to approve Mississippi's SIP revision, which was submitted to comply with CAIR.                             *See*72 FR 56268 (October 3, 2007). In so doing, Mississippi's CAIR SIP revision addressed the interstate transport provisions in Section 110(a)(2)(D)(i) for the 1997 8-hour ozone NAAQS. In response to the remand of CAIR, EPA has since proposed a new rule to address the interstate transport of NOX                             and SOX                             in the eastern United States.                             *See*75 FR 45210 (Aug. 2, 2010) (“the Transport Rule”). However, because this rule has yet to be finalized, EPA's action on element 110(a)(2)(D)(i) will be addressed in a separate action.                        
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4.                                 This requirement was inadvertently omitted from EPA's October 2, 2007, memorandum entitled “Guidance on SIP Elements Required Under Section 110(a)(1) and (2) for the 1997 8-Hour Ozone and PM2.5                             National Ambient Air Quality Standards,” but as mentioned above is not relevant to today's proposed rulemaking.                        
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[FR Doc. 2011-6252 Filed 3-16-11; 8:45 am]

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