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 Environmental Protection Agency 40 CFR Part 52
[EPA-R05-OAR-2010-0671; FRL-9236-5]
 AGENCY: Environmental Protection Agency (EPA).
 ACTION: Proposed Rule.
 SUMMARY: EPA is proposing to approve a July 29, 2010, request from the State of Illinois to exempt sources of Nitrogen Oxides (NOX) in the Illinois portions of the Chicago-Gary-Lake County, Illinois-Indiana and St. Louis, Missouri-Illinois 8-hour ozone nonattainment areas from Clean Air Act (CAA) requirements for NOX
                         Reasonably Available Control Technology (RACT) for purposes of attaining the 1997 8-hour ozone National Ambient Air Quality Standard (NAAQS). The State's NOX
                         RACT waiver request is based on the most recent three years of complete, quality-assured ozone monitoring data, which demonstrate that additional reduction of NOX
                         emissions in the ozone nonattainment areas would not contribute to attainment of the 1997 8-hour ozone NAAQS in the two ozone nonattainment areas. In addition to waiving the NOX
                         RACT requirement for the State of Illinois, final approval of the NOX
                         RACT waiver would also suspend a requirement for EPA to promulgate a NOX
                         RACT Federal Implementation Plan (FIP) for the 8-hour ozone nonattainment areas.
 DATES: Comments must be received on or before January 7, 2011.
 ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R05-OAR-2010-0671, by one of the following methods: *http://www.regulations.gov:*
                         Follow the on-line instructions for submitting comments.
                    *E-mail: mooney.john@epa.gov*.
                    *Fax:*
                         (312) 692-2551.
                    *Mail:*
                         John M. Mooney, Chief, Attainment Planning and Maintenance Section, Air Programs Branch, (AR-18J), U.S. Environmental Protection Agency, 77 West Jackson Boulevard, Chicago, Illinois 60604.
                    *Hand Delivery:*
                         John M. Mooney, Chief, Attainment Planning and Maintenance Section, Air Programs Branch, (AR-18J), U.S. Environmental Protection Agency, 77 West Jackson Boulevard, 18th Floor, Chicago, Illinois 60604. Such deliveries are only accepted during the Regional Office's 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. *Instructions:*
                         Direct your comments to Docket ID No. EPA-R05-OAR-2010-0671. 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 that you consider to be CBI or otherwise protected through 
                        *http://www.regulations.gov*
                         or e-mail. 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 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 and viruses. For additional instructions on submitting comments, go to section I of the 
                        **SUPPLEMENTARY INFORMATION**
                         section of this document. *Docket:*
                         All documents in the docket are listed in the 
                        *http://www.regulations.gov*
                         index. Although listed in the index, some information is not publicly available, 
                        *e.g.,*
                         CBI or other information whose disclosure is restricted by statute. Certain other material, such as copyrighted material, will be publicly available only in hard copy. Publicly available docket materials are available either electronically in 
                        *http://www.regulations.gov*
                         or in hard copy at the U.S. Environmental Protection Agency, Region 5, Air and Radiation Division, 77 West Jackson Boulevard, Chicago, Illinois 60604. This facility is open from 8:30 a.m. to 4:30 p.m., Monday through Friday, excluding Federal holidays. We recommend that you telephone Edward Doty at (312) 886-6057 before visiting the Region 5 office.
 FOR FURTHER INFORMATION CONTACT: Edward Doty, Environmental Scientist, Attainment Planning and Maintenance Section, Air Programs Branch (AR-18J), Environmental Protection Agency, Region 5, 77 West Jackson Boulevard, Chicago, Illinois 60604, (312) 886-6057.


SUPPLEMENTARY INFORMATION: Throughout this document whenever “we,” “us,” or “our” is used, we mean EPA. This 
                    **SUPPLEMENTARY INFORMATION**
                     section is arranged as follows: I. What should I consider as I prepare my comments for EPA? II. What is the background for this action? III. State Petition IV. EPA Review of the Petition A. Have the ozone nonattainment areas attained the 1997 8-hour ozone NAAQS? B. EPA's analysis of Illinois' NOX
                         RACT Waiver Petition V. What are the environmental effects of this action? VI. EPA's Proposed Action VII. Statutory and Executive Order Reviews 
 
 I. What should I consider as I prepare my comments for EPA? When submitting comments, remember to: 1. Identify the rulemaking by docket number and other identifying information (subject heading, 
                    **Federal Register**
                     date, and page number). 2. Follow directions—EPA may ask you to respond to specific questions or organize comments by referencing a Code of Federal Regulations (CFR) part or section number. 3. Explain why you agree or disagree; suggest alternatives and substitute language for your requested changes. 4. Describe any assumptions and provide any technical information and/or data you used. 5. If you estimate potential costs or burdens, explain how you arrived at your estimate in sufficient detail to allow for it to be reproduced. 6. Provide specific examples to illustrate your concerns, and suggest alternatives. 7. Explain your views as clearly as possible, avoiding the use of profanity or personal threats. 8. Make sure to submit your comments by the comment period deadline identified in the proposed rule. II. What is the background for this action? EPA has determined that ground-level ozone (O3) is detrimental to human health. On July 18, 1997 (62 FR 38856), EPA promulgated an 8-hour ozone NAAQS of 0.08 parts per million parts of air (ppm). The standard is violated in an area when any ozone monitor in the area (or in its downwind environs) records 8-hour ozone concentrations with a 3-year average of the annual fourth-highest daily maximum 8-hour ozone concentrations equaling or exceeding 0.085 ppm. Section 107 of the CAA required EPA to designate as nonattainment any area that violated the 1997 8-hour ozone standard. The 8-hour ozone designations and classifications were promulgated on April 30, 2004 (69 FR 23857). In that EPA rulemaking, the Chicago-Gary-Lake County, Illinois-Indiana (IL-IN) and St. Louis, Missouri-Illinois (MO-IL) areas were designated as nonattainment for the 1997 8-hour ozone NAAQS, and the designations became effective on June 15, 2004. Ground-level ozone is not generally emitted directly by sources. Rather, emitted NOX
                     and Volatile Organic Compounds (VOC) react in the presence of sunlight to form ground-level ozone, as a secondary compound, along with other secondary compounds. NOX
                     and VOC are referred to as “ozone precursors.” Reduction of peak ground-level ozone concentrations is achieved through controlling VOC and NOX
                     emissions. The CAA, title 1, part D contains two sets of provisions—subparts 1 and 2—that address planning and emission control requirements for ozone nonattainment areas. Subpart 1 contains general, less prescriptive requirements for all nonattainment areas of any pollutant governed by a NAAQS. Subpart 2 contains more specific requirements for ozone nonattainment areas classified under section 181 of the CAA. The Chicago-Gary-Lake County, IL-IN and St. Louis, MO-IL areas are classified as moderate nonattainment areas under the 1997 8-hour ozone NAAQS.[1] The subpart 2 ozone plan requirements under the CAA with respect to control of VOC and NOX
                     emissions depend on the ozone nonattainment classification of an area. The air quality planning and control requirements for the reduction of NOX
                     emissions are contained in section 182(f) of the CAA. Section 182(f) requires States with areas classified as moderate nonattainment and above to adopt and implement the same level of NOX
                     emission controls for major stationary sources as are required for major stationary sources of VOC emissions. Section 182(f) also provides that these NOX
                     emission reduction requirements do not apply to an area outside of an ozone transport region if EPA determines that additional reductions of NOX
                     emissions would not contribute to attainment of the ozone standard in the area. In areas where the ozone standard is attained, as demonstrated by complete, quality-assured air quality data, without the implementation of the additional section 182(f) NOX
                     emission controls, it is clear that the additional NOX
                     emission reductions required by section 182(f) did not contribute to attainment of the ozone standard. On March 17, 2008, EPA notified Douglas P. Scott, Director of the Illinois EPA, that EPA had determined that the State of Illinois had failed to submit a CAA-required NOX
                     RACT State Implementation Plan (SIP) revision (the NOX
                     RACT emission control rules) for the Illinois portions of the Chicago-Gary-Lake County, IL-IN and St. Louis, MO-IL ozone nonattainment areas. EPA formalized this finding in the 
                    **Federal Register**
                     on March 24, 2008 (73 FR 15416), and that action commenced the sanctions process outlined by section 179 of the CAA and 40 CFR 52.31. 
                    *See*59 FR 39832, August 4, 1994. Under this process, the new source two-to-one (2:1) emissions offset sanction would take effect in the Illinois ozone nonattainment areas on September 24, 2009. The sanctions clock would run and any imposed sanctions would remain in effect until either a NOX
                     RACT SIP revision is submitted to EPA by the State of Illinois and is affirmatively determined complete by EPA, or a NOX
                     control waiver, under section 182(f), is granted by EPA. On September 1 and 2, 2009, the Illinois EPA submitted adopted NOX
                     emission control regulations, as a requested SIP revision, to meet the CAA NOX
                     RACT requirement. On September 16, 2009, EPA determined this SIP revision submittal to be complete, terminating the sanctions clock activated on March 24, 2008.[2]
                    
                     EPA continues to review this SIP revision, but has not yet completed rulemaking on this requested SIP revision. Therefore, the Illinois SIP does not yet contain the Illinois NOX
                     emission control rules. In addition, it is noted that Illinois has not yet completed implementation of the NOX
                     emission control rules. The criteria established for determining the applicability of section 182(f) NOX
                     emission controls and the evaluation of section 182(f) NOX
                     emission control waiver requests are set forth in a January 14, 2005, EPA policy memorandum, “Guidance on Limiting Nitrogen Oxides (NOX) Requirements Related to 8-Hour Ozone Implementation,” from Stephen D. Page, Director, Office of Air Quality Planning and Standards.
                    ( print page 76334) III. State Petition On July 29, 2010, Illinois EPA submitted a request for a NOX
                     RACT waiver for the Illinois ozone nonattainment areas.[3]
                    
                     This NOX
                     RACT waiver was requested for the 1997 8-hour ozone standard. Illinois EPA requested that EPA consider the NOX
                     emission control rules submitted on September 1 and 2, 2009, for approval as NOX
                     RACT in the Illinois SIP under a possible new ozone standard that EPA is currently considering. Illinois EPA based its NOX
                     RACT waiver request on ozone air quality data for 2007-2009, which demonstrate that the 1997 8-hour ozone NAAQS has been attained in the Chicago-Gary-Lake County, IL-IN and St. Louis, MO-IL areas without the implementation of NO
                    X
                     RACT in the Illinois portions of these areas. IV. EPA Review of the Petition A. Have the ozone nonattainment areas attained the 1997 8-hour ozone NAAQS? An area may be considered to be attaining the 1997 8-hour ozone standard if there are no violations of the standard, as determined in accordance with 40 CFR 50.10 and appendix I, based on the most recent three years of complete, quality-assured air quality monitoring data at all ozone monitoring sites in the area and in its nearby downwind environs. To attain this standard, the average of the annual fourth-high daily maximum 8-hour average ozone concentrations measured and recorded at each monitoring site over the most recent 3-year period (the monitoring site's ozone design value) must not exceed the ozone standard. Based on an ozone data rounding convention described in 40 CFR 50, appendix I, the 1997 8-hour ozone standard is attained if the area's ozone design value [4]
                    
                     is 0.084 ppm or less. The data must be collected and quality-assured in accordance with 40 CFR 58, and must be recorded in EPA's Air Quality System (AQS). The ozone monitors generally should have remained at the same locations for duration of the monitoring period required to demonstrate attainment of the ozone standard. The data supporting attainment of the standard must be complete in accordance with 40 CFR 50, appendix I. Table 1 summarizes the annual fourth-high daily maximum 8-hour ozone concentrations and their 3-year (2007-2009) averages for all monitors in the Chicago-Gary-Lake County, IL-IN area and for the Chiwaukee Prairie monitoring site in Wisconsin (considered to be a high ozone monitor in the downwind environs of the Chicago-Gary-Lake County, IL-IN area). These data reflect peak ozone concentrations quality assured and reported by the States of Illinois, Indiana, and Wisconsin. Table 1—Annual Fourth-High Daily Maximum 8-Hour Ozone Concentrations in Parts per Million (ppm) and 3-Year Averages for the Chicago-Gary-Lake County, IL-IN Area
State/monitoring site
2007
2008
2009
3-Year
                             average**Indiana Monitoring Sites**Gary
0.085
0.062
0.058
0.068Hammond
0.077
0.068
0.065
0.070Ogden Dunes
0.084
0.069
0.067
0.073Valparaiso
0.080
0.061
0.064
0.068Whiting
0.088
0.062
0.062
0.071**Illinois Monitoring Sites**Alsip
0.085
0.066
0.069
0.073Chicago-Cheltenham
0.082
0.066
0.065
0.071Chicago-Adams
0.084
0.058
0.076
0.073Chicago-Ellis Avenue
0.079
0.063
0.060
0.068Chicago-Ohio Street
0.075
0.063
0.062
0.067Chicago-Lawndale
0.080
0.066
0.067
0.071Chicago-Hurlbut Street
0.079
0.063
0.064
0.069Lemont
0.085
0.071
0.067
0.074Cicero
0.068
0.060
0.067
0.065Northbrook
0.076
0.063
0.069
0.069Evanston
0.080
0.058
0.064
0.067Lisle
0.072
0.057
0.059
0.063Waukegan
0.081
0.061
0.057
0.066Illinois Beach State Park
0.080
0.067
0.075
0.074Cary
0.074
0.063
0.066
0.068Essex Road
0.071
0.057
0.063
0.064**Wisconsin Monitoring Site**Chiwaukee Prairie
0.085
0.069
0.071
0.075
 
 
 Table 2 summarizes the annual fourth-high daily maximum 8-hour ozone concentrations and their 3-year (2007-2009) averages for all monitors in the St. Louis, MO-IL area. These data reflect peak ozone concentrations quality assured and reported by the States of Illinois and Missouri. Table 2—Annual Fourth-High Daily Maximum 8-Hour Ozone Concentrations and 3-Year Averages in ppm for the St. Louis, MO-IL Area
State/monitoring site
2007
2008
2009
3-Year 
                             average**Illinois Sites**Jerseyville
0.075
0.069
0.068
0.070Alton
0.081
0.068
0.067
0.072Maryville
0.087
0.070
0.074
0.077Wood River
0.086
0.067
0.066
0.073East St. Louis
0.077
0.064
0.069
0.070**Missouri Sites**Arnold
0.087
0.070
0.070
0.075Orchard Farm
0.083
0.072
0.072
0.075West Alton
0.089
0.076
0.071
0.078Maryland Heights
0.094
0.069
0.067
0.076Pacific
0.085
0.064
0.064
0.071Blair Street
0.087
0.073
0.065
0.075
 Review of the 2007-2009 ozone concentrations and site-specific ozone design values (3-year averages) in Tables 1 and 2 shows that all of the ozone monitoring sites in the two areas were attaining the 1997 8-hour ozone NAAQS during this period. Therefore, based on the most recent three years of quality-assured ozone monitoring data, the 1997 8-hour ozone standard has been attained in these areas. Preliminary 2010 ozone data show that the 1997 8-hour ozone standard continues to be attained in the two areas. B. EPA's Analysis of Illinois' NO*X*
                     RACT Waiver Petition EPA's guidance document, “Guidance on Limiting Nitrogen Oxides (NOX) Requirements Related to 8-Hour Ozone Implementation,” sets forth the criteria for demonstrating that further NOX
                     emission reductions in an ozone nonattainment area will not contribute to ozone attainment. The guidance provides that three consecutive years of monitoring data documenting ozone levels attaining the ozone NAAQS in areas in which a State has not implemented certain NOX
                     emission controls is adequate to demonstrate that the additional NOX
                     emission reductions will not aid in achieving attainment of the ozone NAAQS. As described in the guidance document, approval of the NOX
                     emission control exemption is granted by the EPA on a contingent basis. The NOX
                     emission control exemption continues only as long as the State continues to monitor attainment of the ozone NAAQS. If, prior to redesignation of the area to attainment of the ozone NAAQS, the area violates the 1997 8-hour ozone NAAQS, as defined at 40 CFR 50.10 and appendix I, EPA will undertake rulemaking to withdraw the NOX
                     emission control exemption, the area would once again be subject to the NOX
                     emission control requirements under section 182(f) of the CAA. EPA's review of the ozone monitoring data and Illinois' NOX
                     emission control exemption request shows that Illinois has complied with the requirements for a NOX
                     RACT exemption in the State's 8-hour ozone nonattainment areas under section 182(f) of the CAA consistent with the guidelines contained in EPA's January 14, 2005, guidance document. Therefore, EPA proposes to determine that the State of Illinois qualifies for exemption from NOX
                     RACT requirements for the Illinois portions of the Chicago-Gary-Lake County, IL-IN and St. Louis, MO-IL ozone nonattainment areas for the purposes of attaining the 1997 8-hour ozone NAAQS. V. What are the environmental effects of this action? The section 182(f) NOX
                     RACT exemption is based on a finding that additional reductions of NOX
                     would not contribute to attainment of the 1997 8-hour ozone NAAQS in the Chicago-Gary-Lake County, IL-IN and St. Louis, MO-IL ozone nonattainment areas. These areas have three consecutive years of ozone levels attaining the ozone standard even though Illinois has not implemented NOX
                     RACT rules. While EPA is proposing to waive the requirements to control NOX
                     emissions through NOX
                     RACT in the Illinois ozone nonattaiment areas on the basis that NOX
                     emission reductions would not contribute to attainment of the ozone NAAQS in the Chicago-Gary-Lake County, IL-IN and St. Louis, MO-IL areas, EPA recognizes that there are other benefits to controlling NOX
                     emissions. These benefits include reducing acid deposition, reducing nitrogen deposition in sensitive wetlands, estuaries, and their watersheds, and mitigating ozone transport to downwind ozone nonattainment areas. Illinois will continue to be required to control NOX
                     emissions from certain NOX
                     sources under other CAA programs, such as the Acid Rain program in title IV of the CAA, for purposes of achieving these environmental benefits. This proposed NOX
                     RACT waiver will not affect other existing and pending NOX
                     emission control requirements for Illinois needed to achieve these environmental benefits. In addition, EPA notes that an approval of this waiver request is solely for purposes of the CAA requirements to meet the 1997 8-hour ozone NAAQS. The waiver would not apply for purposes of the ozone NAAQS promulgated in 2008 (March 27, 2008, 73 FR 16435) or for purposes of any future ozone NAAQS EPA may promulgate. To the extent section 182(f) applies in this area for purposes of the 2008 or any future ozone NAAQS, the State would need to submit a NOX
                     RACT SIP or would need to demonstrate 
                    ( print page 76336)
                    that a waiver is appropriate for purposes of that different ozone NAAQS. VI. EPA's Proposed Action EPA is proposing approval of Illinois' request to exempt the State's 8-hour ozone nonattainment areas from the section 182(f) NOX
                     RACT requirement. This proposed approval is based on EPA's review of the evidence that the requirements of section 182(f)(1)(A), as elaborated upon in EPA's guidance for section 182(f) exemptions, have been met for Chicago-Gary-Lake County, IL-IN and St. Louis, MO-IL ozone nonattainment areas. In the future, if EPA determines that a violation of the 1997 8-hour ozone NAAQS has occurred in the Chicago-Gary-Lake County, IL-IN area (or at the Chiwaukee Prairie monitoring site in Kenosha County, Wisconsin) or in the St. Louis, MO-IL area while the Illinois portions of these ozone nonattainment areas are designated as nonattainment for the 1997 8-hour ozone NAAQS, EPA will take action to revoke the exemption. Final approval of Illinois' NOX
                     RACT exemption request would suspend a requirement for a NOX
                     RACT FIP stemming from EPA's March 24, 2008, finding of Illinois' failure to submit the NOX
                     RACT rules. The suspension would remain in place contingent upon continued attainment of the 1997 8-hour ozone NAAQS in the Chicago-Gary-Lake County, IL-IN and St. Louis, MO-IL areas. If EPA approves a redesignation request for either of these areas for the 1997 8-hour ozone NAAQS, the NOX
                     RACT FIP clock will permanently stop at that time. If EPA determines that there is a violation of the 1997 8-hour ozone NAAQS while either of these areas remain designated as nonattainment for the 1997 8-hour ozone NAAQS, the NOX
                     RACT waiver will no longer be applicable as of the effective date of any such determination for the violating area by EPA. At that time, the NOX
                     RACT FIP requirement will no longer be suspended and the NOX
                     RACT FIP clock will restart at the point at which it stopped. EPA will provide notice in the 
                    **Federal Register**
                     of any such waiver revocation and of the restarting of the NOX
                     RACT FIP clock. VII. Statutory and Executive Order Reviews Under the CAA, the Administrator is required to approve a SIP submission that complies with the provisions of the CAA 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 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 (Pub. L. 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 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, 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. List of Subjects in 40 CFR Part 52 Environmental protection
Air pollution control
Intergovernmental relations
Nitrogen dioxide
Ozone
Volatile organic compounds
 Dated: November 23, 2010. Susan Hedman, Regional Administrator, Region 5.


# Footnotes

1.
    
                         On May 11, 2010 (75 FR 26113), EPA published a final rule to redesignate Lake and Porter Counties, Indiana to attainment of the 1997 8-hour ozone NAAQS. The Illinois portion of the Chicago-Gary-Lake County, IL-IN area remains designated as a nonattainment area for the 1997 8-hour ozone NAAQS. Back to Citation
 2.
    
                         Termination of the sanctions clock did not suspend or terminate a FIP clock (also started on March 24, 2008) requiring EPA to promulgate a NOX
                         RACT FIP within two years of the determination that Illinois had failed to submit required NOX
                         RACT rules. The FIP clock can only be terminated (EPA's obligation to promulgate a FIP is ended) if EPA approves Illinois' NOX
                         emission control rules as NOX
                         RACT in the Illinois SIP or suspended if EPA approves a waiver of the NOX
                         RACT requirement for both of the ozone nonattainment areas. If the FIP clock is suspended through approval of the NOX
                         RACT waiver, the suspension of the FIP clock continues only as long as the two ozone nonattainment areas continue to attain the 1997 8-hour ozone NAAQS. The FIP clock is terminated if EPA approves the redesignation of both areas (the Illinois portions of the Chicago-Gary-Lake County, IL-IN and St. Louis, MO-IL 8-hour ozone nonattainment areas) to attainment of the 1997 8-hour ozone NAAQS. Back to Citation
 3.
    
                         The Illinois portion of the Chicago-Gary-Lake County, IL-IN 8-hour ozone nonattainment area includes Cook, DuPage, Kane, Lake, McHenry, and Will Counties, and portions of Grundy (Aux Sable and Goose Lake Townships) and Kendall (Oswego Township) Counties. The Illinois portion of the St. Louis, MO-IL 8-hour ozone nonattainment area includes Jersey, Madison, Monroe, and St. Clair Counties. Back to Citation
 4.
    
                         The worst-case monitoring site-specific ozone design value in the area and in its downwind environs. Back to Citation


[FR Doc. 2010-30840 Filed 12-7-10; 8:45 am] BILLING CODE 6560-50-P