97-29396. Clean Air Act Reclassification; Arizona-Phoenix Nonattainment Area; Ozone  

  • [Federal Register Volume 62, Number 215 (Thursday, November 6, 1997)]
    [Rules and Regulations]
    [Pages 60001-60013]
    From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
    [FR Doc No: 97-29396]
    
    
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    ENVIRONMENTAL PROTECTION AGENCY
    
    40 CFR Part 81
    
    [AZ-001-BU; FRL-5917-4]
    
    
    Clean Air Act Reclassification; Arizona-Phoenix Nonattainment 
    Area; Ozone
    
    AGENCY: Environmental Protection Agency (EPA).
    
    ACTION: Final rule.
    
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    SUMMARY: EPA is finding that the Phoenix nonattainment area (Maricopa
    
    [[Page 60002]]
    
    County, Arizona) has not attained the 1-hour ozone national ambient air 
    quality standard (NAAQS) by the applicable attainment date in the Clean 
    Air Act (CAA) for moderate ozone nonattainment areas, November 15, 
    1996. EPA is also denying Arizona's application for a one-year 
    extension of the November 15, 1996 attainment date for the Phoenix 
    area. The finding and denial are based on EPA's review of monitored air 
    quality data from 1994 through 1996 for compliance with the 1-hour 
    ozone NAAQS. As a result of the finding and denial, the Phoenix ozone 
    nonattainment area will be reclassified by operation of law as a 
    serious ozone nonattainment area on the effective date of this action. 
    The effect of the reclassification will be to continue progress toward 
    attainment of the 1-hour ozone NAAQS through the development of a new 
    State implementation plan (SIP), due 12 months from the effective date 
    of this action, addressing attainment of that standard by November 15, 
    1999.
    
    EFFECTIVE DATE: December 8, 1997.
    
    FOR FURTHER INFORMATION CONTACT: Frances Wicher, Office of Air 
    Planning, AIR-2, Air Division, U.S. Environmental Protection Agency, 
    Region 9, 75 Hawthorne Street, San Francisco, California 94105, (415) 
    744-1248.
    
    SUPPLEMENTARY INFORMATION:
    
    I. Background
    
        Under sections 107(d)(1)(C) and 181(a) of the Clean Air Act (CAA), 
    the Phoenix metropolitan area was designated nonattainment for the 1-
    hour ozone NAAQS and classified as ``moderate.'' See 56 FR 56694 
    (November 6, 1991). Moderate nonattainment areas were required to show 
    attainment by November 15, 1996. CAA section 181(a)(1).
        Pursuant to section 181(b)(2)(A) of the CAA, EPA has the 
    responsibility for determining, within six months of an area's 
    applicable attainment date, whether the area has attained the 1-hour 
    ozone NAAQS. 1 Under section 181(b)(2)(A), if EPA finds that 
    an area has not attained the 1-hour ozone NAAQS, it is reclassified by 
    operation of law to the higher of the next higher classification or to 
    the classification applicable to the area's design value at the time of 
    the finding. CAA section 181(b)(2)(B) of the Act requires EPA to 
    publish a notice in the Federal Register identifying areas which failed 
    to attain the standard and therefore must be reclassified by operation 
    of law.
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        \1\ On July 18, 1997 (62 FR 38856), EPA revised the ozone NAAQS 
    to establish a 8-hour standard; however, in order to ensure an 
    effective transition to the new 8-hour standard, EPA also retained 
    the 1-hour NAAQS for an area until such time as it determines that 
    the area meets the 1-hour standard. See revised 40 CFR 50.9 at 62 FR 
    38894. As a result of retaining the 1-hour standard, CAA part D, 
    subpart 2, Additional Provisions for Ozone Nonattainment Areas, 
    including the reclassification provisions of section 181(b), remain 
    applicable to areas that are not attaining the 1-hour standard. 
    Unless otherwise indicated, all references in this notice are to the 
    1-hour ozone NAAQS.
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        If a state does not have the clean data necessary to show 
    attainment of the NAAQS, it may apply, under CAA section 181(a)(5) of 
    the CAA, for a one-year attainment date extension. Issuance of an 
    extension is discretionary, but EPA can exercise that discretion only 
    if the state has: (1) complied with the requirements and commitments 
    pertaining to the applicable implementation plan for the area, and (2) 
    the area has measured no more than one exceedance of the ozone NAAQS at 
    any monitoring site in the nonattainment area in the year preceding the 
    extension year.
        A complete discussion of the statutory provisions and EPA policies 
    governing findings of whether an area failed to attain the ozone NAAQS 
    and extensions of the attainment date can be found in the proposal for 
    this action at 62 FR 46229 (September 2, 1997).
    
    II. Proposed Action
    
        On September 2, 1997, EPA proposed to find that the Phoenix ozone 
    nonattainment area failed to attain the 1-hour ozone NAAQS by the 
    applicable attainment date. 62 FR 46229. The proposed finding was based 
    upon ambient air quality data from the years 1994, 1995, and 1996. 
    These data showed that the 1-hour ozone NAAQS of 0.12 parts per million 
    had been exceeded on average more than one day per year over this 
    three-year period. Attainment of the 1-hour NAAQS is demonstrated when 
    an area averages one or less days per year over the standard during a 
    three-year period. 40 CFR 50.9 and Appendix H. EPA also proposed that 
    the appropriate reclassification of the area was to serious, based on 
    the area's 1994-1996 design value of 0.132 ppm. For a complete 
    discussion of the Phoenix ozone data and method of calculating both the 
    average number of days over the ozone standard and the design value, 
    see 62 FR 46230.
        EPA also proposed to deny the State of Arizona's application for a 
    one-year extension of the moderate area ozone attainment date for the 
    Phoenix nonattainment area. The proposed denial was based, in part, on 
    evidence that the Phoenix area is not close to attainment of the 1-hour 
    ozone standard and will need additional controls to attain, and, in 
    part, on the area's failure to meet the second statutory criterion for 
    granting an extension. That criterion requires that the area have no 
    more than one exceedance of the ozone NAAQS in 1996. CAA section 
    181(a)(5)(B). The Fountain Hills special purpose monitor in the eastern 
    part of the Phoenix nonattainment area recorded 4 exceedances of the 1-
    hour ozone NAAQS in 1996. For a complete discussion of the basis for 
    the proposed denial of the extension, including EPA's policies related 
    to the use of special purpose monitoring data, see 62 FR 46231.
        Finally, EPA proposed to require submittal of the serious area SIP 
    revisions no later than 12 months from the effective date of the area's 
    reclassification.
    
    III. Response to Comments
    
        EPA received twenty-one comment letters in response to its 
    September 2, 1997 proposal. Comments were received from Arizona 
    Governor Jane Dee Hull, the Arizona legislative leadership, U.S. 
    Senator Jon Kyl and U.S. Representative John Shadegg, the Arizona 
    Department of Environmental Quality (ADEQ), the Maricopa County 
    Environmental Services Department (MCESD), several local elected 
    officials, numerous business groups, and one environmental group.
        EPA wishes to express its appreciation to each of these individuals 
    and organizations for taking the time to comment on the proposal. Each 
    raised important issues to which EPA welcomes the opportunity to 
    respond.
        As described above, EPA's proposal was composed of three elements: 
    (1) a finding of failure to attain by the statutory deadline of 
    November 15, 1996; (2) a denial of the State's application for a one-
    year extension of the attainment date; and (3) a 12-month schedule for 
    submittal of the revised SIP.
        Most commenters emphasized Arizona's leadership in the development 
    and implementation of effective ozone controls (many of which are only 
    mandated for serious or severe ozone nonattainment areas) and its 
    demonstrated commitment to making real improvements in air quality. 
    Among the controls cited are: the State's premier vehicle emissions 
    inspection program (which includes the only regulatory use of remote 
    sensing), Maricopa County's Travel Reduction Program, the extension of 
    the Federal Reformulated Gasoline (RFG) program to the Phoenix area, 
    the State's adoption
    
    [[Page 60003]]
    
    of its own, more stringent ``Clean Burning Gasoline'' program as well 
    as numerous other control programs such as the voluntary lawnmower 
    replacement program, mandatory conversion of government fleets to 
    alternative fuels, and incentives for conversion of private fleets to 
    alternative fuels and for the construction of public fueling 
    facilities. The City of Phoenix also listed a number of innovative air 
    quality measures that it has implemented, and finally, APS noted the 
    voluntary efforts of business and community groups including the 
    Business for Clean Air Challenge program.
        EPA is very aware of Arizona's leadership and noted the State's 
    dedicated efforts to adopt and implement controls to attain the ozone 
    standard in its proposal. See 62 FR 46232. The Agency would like to 
    make clear that in taking this action it is neither ignoring Arizona's 
    exemplary efforts to adopt controls to improve its air quality nor 
    minimizing Arizona's commitment to clean air. Both are evidenced by the 
    numerous controls listed above and the State's continuing efforts to 
    evaluate its ozone situation.
        As stated above, neither the determination of attainment/
    nonattainment nor the determination of whether an area met the 
    statutory extension criterion relating to exceedances of the ozone 
    NAAQS in 1996 allows for reviewing an area's efforts to adopt controls. 
    This exercise involves little more than a rote review of available 
    ambient air quality data. While EPA may desire more flexibility in this 
    situation to reward Arizona for its demonstrated leadership, the Agency 
    has not been granted that flexibility under the Clean Air Act.
        For the most part, commenters made similar, and frequently 
    identical, comments. The issues raised relate principally to (1) the 
    adverse impacts of the reclassification to serious, (2) the retention 
    of the 1-hour ozone NAAQS in EPA's recent action revising the ozone 
    NAAQS, (3) the denial of the request for a one-year attainment date 
    extension, (4) EPA's compliance with the Regulatory Flexibility Act, 
    and (5) proposed measures to mitigate the impact of the 
    reclassification. Many of the comments received did not directly 
    address EPA's proposals and instead focused on issues that have been 
    the subject of earlier EPA rulemakings (e.g., retention of 1-hour ozone 
    standard), outside of EPA's regulatory authority in this action (e.g., 
    the reclassification to serious), or unrelated to the action (e.g., 
    approval of Arizona's excess emissions rule).
        In this preamble, EPA is responding to the most significant 
    comments received and has provided more detailed and complete answers 
    to all comments received in the Response to Comments (RTC) document 
    which is part of the technical support document (TSD) for this 
    rulemaking. Copies of the TSD as well as other documents in the docket 
    for this rulemaking may be obtained from the contact listed at the 
    beginning of this notice.
    
    A. Comments Related to the Proposed Finding of Failure to Attain 
    Comment
    
        ADEQ and others note that Arizona has implemented most of the 
    mandatory control programs for both serious and severe ozone 
    nonattainment areas and the only remaining requirements are for more 
    stringent new source review (NSR) and the federal clean fleets program. 
    Because the imposition of these serious area requirements will do 
    little to improve air quality in the Phoenix metropolitan area, the 
    commenters contend that the reclassification is effectively punitive.
        Response: Serious ozone nonattainment areas (like all other 
    classifications) are subject to both specific requirements for 
    mandatory control programs and more general requirements for attainment 
    and reasonable further progress. EPA agrees that the Maricopa area 
    already has in place most of the mandatory control programs required 
    for serious area. The State, however, has yet to address the 
    requirements for attainment by 1999 in CAA section 181(c)(2)(A) or the 
    9 percent rate-of-progress requirement in section 181(c)(2)(B). Both 
    these requirements are very likely to require measures beyond the 
    specific control programs mandated by a serious area classification, 
    resulting in improved air quality for the Phoenix area.
        The classification structure of the Act is a clear statement of 
    Congress's belief that the later attainment deadlines afforded higher-
    classified and reclassified areas require compensating increases in the 
    stringency of controls. The reclassification provisions of the Clean 
    Air Act are a reasonable mechanism to assure continued progress toward 
    attainment of the health-based ambient air quality standards when areas 
    miss their attainment deadlines and are not punitive.
        Comment: ADEQ, MCESD, and others asserted that the schedules for 
    planning and attainment under a reclassification almost certainly 
    guarantee failure because it would be difficult to complete the needed 
    technical analysis within the proposed 12-month SIP submittal schedule 
    and then to implement any additional controls needed before the 1999 
    ozone season.
        Response: EPA agrees that the short time available for planning and 
    attainment between the moderate area deadline of November 15, 1996 and 
    the serious area deadline of November 15, 1999 makes completing the 
    required technical analysis and adopting additional controls difficult. 
    The State, however, has already adopted or is in the process of 
    adopting a number of controls that will contribute substantial emission 
    reductions in 1997 or beyond. These controls include the federal 
    reformulated gasoline program for 1997, Arizona's Clean Burning 
    Gasoline program for 1998 and later, improvements to the vehicle 
    emission inspection program, and an industrial solvent cleaning rule 
    (currently schedule for adoption in early 1998). In addition, ADEQ 
    continues to evaluate and refine the Urban Airshed modeling performed 
    for the draft Voluntary Early Ozone Plan (VEOP). All these actions give 
    Arizona a head start in meeting the serious area requirements.
        In proposing a 12-month schedule for submittal of the revised plan, 
    EPA understood that this was an ambitious schedule but stated that it 
    believed ``a 12-month schedule is appropriate because the attainment 
    date for serious areas, November 15, 1999, is little more than 2 years 
    away and the State will need to expedite adoption and implementation of 
    controls to meet that deadline.'' See 62 FR 42633. EPA is therefore 
    retaining the 12-month schedule for submittal of the SIP revisions 
    needed to meet the serious area requirements.
        Comment: Commenters argue that because stationary sources are not 
    the cause of the ozone problem in Phoenix, the more stringent new 
    source review (NSR) requirements that come with the serious area 
    classification will do little to improve the air quality and are thus 
    merely punitive.
        Response: Phoenix is not being singled out for more stringent NSR 
    requirements than any other similarly-classified area in the Country 
    such as Atlanta, Washington, D.C. and San Diego. The more stringent NSR 
    provisions (which principally affect which sources are subject to major 
    source NSR) are required by statute of all serious areas without 
    exception. This tightening of control requirements as areas move up the 
    classification ladder and are given more time to attain is part of the 
    basic Clean Air Act scheme for ozone attainment. In establishing this 
    scheme, Congress determined that the more stringent NSR provision were 
    reasonable for serious areas and, since
    
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    Congress did not provide relief from these requirements for 
    reclassified areas, it also determined that they were reasonable 
    without exception for moderate areas being reclassified to serious.
    
    B. Comments Related to Retention of the 1-Hour Ozone Standard Comment
    
        A number of comments were received on the legality of EPA's 
    decision, having promulgated an 8-hour NAAQS, to defer revocation of 
    the 1-hour ozone NAAQS.
        Response: The continued applicability of the 1-hour standard until 
    EPA determines that the applicable area is meeting that standard is not 
    the subject of this rulemaking. This rulemaking only concerns the 
    finding that the Phoenix area failed to attain the 1-hour standard and 
    the denial of the State's request for an extension of the attainment 
    deadline for that standard. The issue of the continued applicability of 
    the 1-hour standard was part of the rulemaking in which EPA promulgated 
    an 8-hour ozone standard. 62 FR 38856 (July 18, 1997). That rulemaking 
    proceeding, not this one concerning Phoenix, was the appropriate forum 
    in which to raise issues concerning the continued applicability of the 
    1-hour standard.
    
    C. Comments Related to the Proposal to Deny Arizona's Application for a 
    One-Year Extension of the Attainment Date
    
        Almost all comments received opposed EPA's proposed denial of the 
    State's application for a one-year extension of the November 15, 1996 
    attainment date. Before responding to the specific comments raised with 
    regard to this issue, some introductory remarks are in order. In 
    general, the commenters misperceive the nature of section 181(a)(5) of 
    the CAA that provides:
    
        Upon application of any State, the Administrator may extend for 
    1 additional year (hereinafter referred to as the ``Extension 
    Year'') the [attainment deadline] if--
        (A) the State has complied with all requirements and commitments 
    pertaining to the area in the applicable implementation plan, and
        (B) no more than 1 exceedance of the national ambient air 
    quality standard level for ozone has occurred in the area in the 
    year preceding the Extension Year.
        No more than 2 one-year extensions may be issued under this 
    paragraph for a single nonattainment area. Emphasis added.
    
        Many commenters erroneously assume that if the conditions in 
    subparagraphs A and B above are met, then EPA must automatically grant 
    the extension. However, by its terms, section 181(a)(5) is ultimately 
    discretionary. See 62 FR 46230. While EPA cannot grant an extension 
    request if the conditions are not met, it is not required to do so even 
    if they are.
        While EPA believes, as discussed at length below, that the second 
    condition has not been met, the Agency has ample justification for 
    denying the request even if that were not the case. In its proposal, 
    EPA articulated two reasons to deny the extension request. The first--
    the failure to meet the second extension criterion--will be discussed 
    further below. The second--that the Phoenix area was not close to 
    attainment--went virtually unaddressed by most the commenters. As EPA 
    stated in its notice:
    
    [T]he underlying premise of an extension is that an area is close to 
    attainment and already has in place the control strategy needed for 
    attainment. All evidence in front of the Agency indicates that the 
    Phoenix area is not close to attainment of the 1-hour ozone standard 
    and that, despite the State's dedicated efforts to adopt and 
    implement controls, the area will need to continue its on going 
    planning and control efforts. Thus, even if the Phoenix area met the 
    statutory requirements for granting an extension, EPA believes that 
    such an extension would not be appropriate at this time. Emphasis 
    added. 62 FR 46232.
    
        While several commenters questioned EPA's conclusion that the 
    Phoenix area was not close to attainment, their comments (which are 
    addressed later) did not persuade EPA that its conclusion was wrong. In 
    fact, an equal number of commenters tacitly agreed with EPA's position 
    by arguing the need for long-term measures to solve Phoenix's ozone 
    problem and the impossibility of showing attainment by 1999.
        The central thrust of the comments EPA received on the extension 
    issue is that EPA improperly included data from special purpose 
    monitors (SPMs) 2 in its calculation of whether the Phoenix 
    area experienced no more than one exceedance of the ozone NAAQS in 
    1996, the year preceding the extension year, and had EPA properly 
    excluded the data, then the Phoenix area would have been granted an 
    extension. For the reasons discussed below, EPA believes that it was 
    entitled to rely on that data in making this assessment. However, even 
    if the SPM data were excluded from the calculation, the Agency believes 
    that it can properly exercise its discretion to deny the State's 
    extension request.
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        \2\ In the Phoenix area, MCESD operates eight ozone monitors in 
    its official or state or local air monitoring station/national air 
    monitoring station (SLAMS/NAMS) network. ADEQ and MCESD operate a 
    total of nine ozone special purpose monitors in the area.
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        As documented below and in Appendix B to the TSD, since at least 
    1989, Arizona has maintained an inadequate official monitoring network 
    and has consistently declined to convert the SPMs (which meet all of 
    EPA's technical criteria) to cure those deficiencies. If it had to rely 
    solely on this inadequate monitoring network, it would be impossible 
    for EPA to determine whether the Phoenix area had one or fewer 
    exceedances of the ozone standard in 1996 because the official network 
    does not adequately represent Phoenix's air quality. Only when the data 
    from the SPMs are combined with those of the official network is it 
    possible to make this determination and with the SPM data it is clear 
    that the Phoenix area is not close to attaining the ozone 1-hour NAAQS. 
    Modeling conducted by the State confirms this conclusion. Thus the 
    underlying intent of the statute's extension provision has not been 
    met. In acknowledging this reality, EPA can appropriately exercise its 
    discretion to deny the extension request.
        Comment: ADEQ contends that in a letter dated June 6, 1997, to the 
    Clerk of the United States Court of Appeals for the Third Circuit, 
    EPA's legal counsel noted that EPA was not required to consider non-
    network (i.e., not part of the SLAMS/NAMS network) data showing 
    violations of the NAAQS. Letter, June 6, 1997, from Lois J. Schiffer, 
    Assistant Attorney General, Environmental Natural Resources Division 
    (by Greer S. Goldman), U.S. Department of Justice (DOJ) to P. Douglas 
    Sisk, Clerk, United States Court of Appeals for the Third Circuit 
    (``3rd Circuit letter''). ADEQ also cites Southwestern Pennsylvania 
    Growth Alliance v. Browner, 121 F.3d 106 (3rd Cir. 1997), to support 
    its position that EPA in the past has excluded exceedance data from its 
    evaluation of a redesignation request because the data came from 
    monitors that were not part of the SLAMS network.
        Response: In the 3rd Circuit letter, EPA actually concluded that 
    the Agency's regulation on the use of SPM data, 40 CFR 58.14, does not 
    authorize it to take into account the State's intended use of SPM data 
    that otherwise meet that regulation's requirements when deciding 
    whether to use it in an ozone redesignation action.3 As a 
    result, under EPA's regulation, all available SPM data that meet the 
    minimum federal siting and quality assurance requirements in 40 CFR 
    Part 58 must be used in making regulatory decisions
    
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    such as redesignations and reclassifications.
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        \3\ This letter was signed by DOJ on behalf of EPA and 
    accurately reflects the Agency's position on the use of SPM data.
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        Southwestern Pennsylvania Growth Alliance involves EPA's 
    disapproval of the Commonwealth of Pennsylvania's request to 
    redesignate the Pittsburgh-Beaver Valley nonattainment area to 
    attainment for ozone. The disapproval was based on 1995 violations of 
    the ozone standard recorded on the area's SLAMS/NAMS network. 61 FR 
    19193 (May 1, 1996) The Southwestern Pennsylvania Growth Alliance 
    (SWPGA), an organization of major manufacturers and local governments 
    in the Pittsburgh-Beaver Valley region, sought review of EPA's 
    disapproval by the Third Circuit Court of Appeals. A full history of 
    EPA's actions on Pennsylvania's redesignation request can be found in 
    the TSD for today's notice.
        Among the issues raised by SWPGA was the use of the 1995 SLAMS/NAMS 
    data. SWPGA argued that EPA acted contrary to the Act by considering 
    the 1995 ozone exceedances because they occurred after the EPA's 18 
    month deadline to act on the State's redesignation request which had 
    been submitted in November, 1993. In an effort to clarify certain 
    statements made in its brief, EPA identified certain instances where it 
    had not used available data when acting on a redesignation request. In 
    one instance, the San Francisco-Bay Area redesignation to attainment 
    for ozone, EPA had excluded SPM data from its redesignation evaluation. 
    The other instance, LaFourche Parish, Louisiana, involved only SLAMS/
    NAMS data. 121 F.3d at 115.
        The court then directed EPA to address a number of questions, 
    including why it is lawful for EPA to exclude consideration of data 
    from monitors that are not part of the SLAMS network. The 3rd Circuit 
    letter cited by ADEQ is EPA's response to the court on this issue. As 
    stated in this letter (p. 4):
    
        For data from monitors that are not part of the SLAMS network 
    required by [40 CFR] Part 58 [EPA's monitoring regulation], EPA 
    regulations provide that EPA will exclude the data when they do not 
    meet the terms of 40 CFR 58.14. That section provides, in relevant 
    part:
        Any ambient air quality monitoring station other than a SLAMS or 
    [prevention of significant deterioration] station from which the 
    State intends to use the data as part of a demonstration of 
    attainment or nonattainment or in computing a design value for 
    control purposes of the [NAAQS] must meet the requirements for SLAMS 
    described in section 58.22 and, after January 1, 1983, must also 
    meet the requirements for SLAMS as described in section 58.13 and 
    appendices A and E to this part.
        * * * In at least one case, EPA has interpreted section 58.14 to 
    make a state's intent a factor in determining whether data from 
    special purpose monitors that otherwise meet the requirements of 
    section 58.14 may be excluded from consideration in an ozone 
    redesignation action. However, EPA has recently evaluated that 
    interpretation and concluded that it is not authorized by section 
    58.14.
    
    The passage supports the conclusion that the only circumstance under 
    which SPM data may be excluded is if the data do not meet the siting 
    and quality assurance requirements of Part 58.
        The statement that ADEQ cites from the 3rd Circuit letter comes 
    from the letter's concluding paragraph which discusses the specific 
    facts of Southwestern Pennsylvania Growth Alliance. All monitoring data 
    under consideration in that case came from SLAMs monitors; there were 
    no SPM data at issue in EPA's decision to deny the redesignation 
    request. In this context, it is clear that the 3rd Circuit letter does 
    not indicate that EPA may ignore SPM data:
    
        It should be noted, however, that the issue of whether EPA has 
    discretion to decide if data from outside the official monitoring 
    network should be used in redesignation decisions is not at issue in 
    this case, where all monitored violations of the ozone standard were 
    recorded at official network monitors. And even if EPA were required 
    to consider non-network data showing violations, EPA would not be 
    authorized to ignore violations at official network monitors when 
    determining whether an area has attained the standard and is 
    entitled to redesignation. 3rd Circuit letter (p. 4).
    
        ADEQ also cites the court's opinion to support its contention that 
    EPA has excluded SPM data in the past. While the court noted that 
    ``[i]n at least one case, the EPA has excluded exceedance data from its 
    evaluation of a redesignation request because the data came from 
    monitors that were not part of the [SLAMS] network * * *,'' it went on 
    to state in the same paragraph:
    
        Assuming arguendo that the EPA's exclusion of non-SLAMS 
    exceedance data violates the EPA's duty not to redesignate an area 
    that fails to attain the NAAQS, the EPA's prior disregard of this 
    duty did not relieve the EPA of its obligation to act correctly in 
    other cases. Emphasis added. 121 F.3d at 115.
    
    Based on its interpretation of Section 58.14, and the facts of the 
    Phoenix air quality situation discussed below, EPA believes that it is 
    acting correctly in not excluding the SPM data from consideration in 
    the Phoenix extension decision.
        Comment: Numerous commenters questioned the timing of EPA's 
    issuance of the Memorandum, ``Agency Policy on the Use of Special 
    Purpose Monitoring Data,'' dated August 22, 1997, by John Seitz, EPA 
    Director of the Office of Air Quality Planning and Standards (``SPM 
    policy'' or ``SPM memo''), noting that it was issued just 3 days in 
    advance of EPA's announcement that it was proposing to find that the 
    Phoenix area had failed to attain the ozone standard and to deny the 
    State's extension request. The commenters contend that, absent this 
    ``ad hoc policy,'' EPA would not have been able to propose to deny 
    Arizona's one-year extension request based upon the use of the special 
    purpose monitor data that EPA has heretofore rejected.
        Commenters state that the information submitted to EPA's AIRS and 
    additional data submitted to EPA by ADEQ demonstrate that, had the 
    Fountain Hills special purpose monitor data properly been excluded, the 
    criterion in section 181(a)(5)(B) would have been satisfied. Commenters 
    note that during the year preceding the extension year (1996), there 
    was only one exceedance of the ozone NAAQS at a SLAMS or NAMS monitor 
    (the exceedance at the Mesa SLAMS monitor on July 23, 1996, when a 
    reading of 0.127 ppm ozone was recorded) and that this was the only 
    ozone exceedance recorded during the entire calendar year of 1996 on 
    any official SLAMS or NAMS monitor.
        Response: The proper treatment of SPM data has been growing 
    national interest for some time, increasing the need for EPA to issue 
    national guidance. As noted in the SPM memo (p. 1):
    
    [OAQPS] has received several inquiries from Regional Offices into 
    how special purpose monitoring data can be used in making a variety 
    of regulatory decisions such as designations, classifications, and 
    attainment date extensions. [It] also [has] a final ruling from the 
    U.S. Court of Appeals for the Third Circuit which supports the U.S. 
    EPA denial of Pennsylvania's redesignation request for the 
    Pittsburgh-Beaver Valley ozone nonattainment area. In light of these 
    questions, legal developments, and the new [NAAQS] implementation 
    directives, [OAQPS] believe[s] it is necessary to discuss the use of 
    all publicly available special purpose monitoring data for all 
    regulatory applications.
    
        Further impetus for the SPM policy was the revised ozone NAAQS 
    under which EPA must determine within 90 days of their July 18, 1997 
    publication which areas of the Country are attaining the 1-hour 
    standard. National guidance is clearly essential to assure consistency 
    in the use of SPM data for these determinations.
        The interest in and the need for a clear statement of the Agency's 
    policy on SPM data was thus far broader than the Phoenix situation. The 
    Agency did not, as the commenters imply, create an
    
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    ``ad hoc'' policy simply to justify its proposed denial of Arizona's 
    request for an extension but rather it articulated a national policy 
    applicable to all areas of the Country.
        The commenters, however, wrongly assert that EPA needed the August 
    22, 1997 SPM policy to justify its denial of Arizona's extension 
    request. Even without a formal written policy statement, EPA believes 
    that it has sound reasons to use the SPM data in this case, including 
    the inadequate SLAMS/NAMS network in Phoenix, the discrepancies in 
    measured air quality between the official monitors and the SPMs, and 
    its long-established regulations governing the use of SPM data.
        Moreover, the June 6, 1997 letter to the Third Circuit and the 
    Court's subsequent July 28, 1997 decision in Southwestern Pennsylvania 
    Growth Alliance, both available long before EPA's announcement, may be 
    read to imply that EPA must consider available SPM data in making 
    regulatory decisions such as granting extension requests. As noted in 
    the SPM memo (p. 2):
    
    The Third Circuit Court decision supports the view that the EPA may 
    not redesignate an area from nonattainment to attainment if the EPA 
    knows that the area is not meeting the ozone NAAQS. Specifically, if 
    the U.S. EPA knows of a violation or violations of the ozone NAAQS 
    by either examining information within the AIRS or data from other 
    sources and these data meet all 40 CFR Part 58 requirements, the 
    U.S. EPA cannot determine that an area is attaining the NAAQS.
    
        This logic applies equally to extension requests: if EPA knows of 
    more than one exceedance in an area in the year preceding the extension 
    year by either examining information within AIRS or data from other 
    sources and these data meet all 40 CFR part 58 requirements, EPA cannot 
    grant an extension of the attainment date.
        Finally, EPA notes that it informed Arizona of its intention to use 
    the SPM data in advance of its August 25, 1997 announcement. In a 
    presentation to the May 19, 1997 meeting of the Arizona air quality 
    monitoring network stakeholders,4 EPA stated that the 
    current Maricopa SLAM network was deficient and that it could not, 
    without inclusion of the SPM sites, support the granting of an 
    extension. At the June 9, 1997 meeting, EPA distributed the 3rd Circuit 
    letter and noted that EPA would soon be formally clarifying its use of 
    SPM data. EPA also made a series of courtesy calls to state and local 
    agencies the week before its announcement to inform them that it would 
    be proposing to find that Phoenix had failed to attain and that it was 
    proposing to deny the extension request based in part on the SPM data.
    ---------------------------------------------------------------------------
    
        \4\ ADEQ convened a series of facilitated stakeholder meetings 
    in May through July, 1997 to discuss the ambient air quality 
    monitoring network in Maricopa County. Participants included MCESD, 
    other local agencies, industry representatives, and environmental 
    groups. EPA also participated in the meetings.
    ---------------------------------------------------------------------------
    
        Comment: Several commenters contend that the use of the SPM data in 
    this instance is inconsistent with actions taken in other nonattainment 
    areas where SPM data were excluded for the purposes of making similar 
    determinations and conclude that if EPA had followed its earlier 
    precedents then data from the Fountain Hills special purpose monitor 
    would not have been used to deny the extension request. ADEQ also notes 
    that the SPM memo implicitly concedes that Agency policy up to the date 
    of the memorandum had been to reject exactly the kind of monitoring 
    data on which EPA based its decisions to propose to deny the one-year 
    extension. Commenters view EPA's refusal to follow prior precedent and 
    disregard special purpose monitor data in this situation as a simple 
    case of disparate treatment.
        Response: EPA's previous record on the use of SPM data contains 
    numerous examples of instances where the Agency has used SPM data in 
    making designation and classification decisions. While commenters note 
    one instance where EPA did not use available SPM data (the Beaumont-
    Port Arthur reclassification), and the SPM memo notes one other (the 
    San Francisco-Bay Area redesignation), there are many more instances 
    where the Agency has used SPM data to either designate or classify an 
    area, including the original classification of the Phoenix area as 
    moderate for ozone and the PM-10 nonattainment designations for the 
    Bullhead City and Payson, Arizona areas. See 56 FR 56694, 56703 
    (November 6, 1991) and 58 FR 67334, 67336 (December 21, 1993), 
    respectively. Outside of Arizona, EPA has used SPM data to redesignate 
    to nonattainment portions of White Top Mountain in New York and Smyth 
    County, Virginia. See 56 FR 56694, 56704.
        Many commenters cited EPA's 1996 action to correct the Beaumont/
    Port Arthur, Texas area ozone classification from serious to moderate 
    as an example of EPA's inconsistent use of SPM data. 61 FR 14496 (April 
    2, 1996). In this case, data from an SPM had originally been utilized 
    to classify the Beaumont/Port Arthur area as a serious ozone 
    nonattainment area. Based on additional information provided by Texas, 
    EPA corrected the reclassification under CAA section 110(k)(6) from 
    serious to moderate, stating that the data from the SPM should not have 
    been used for classification purposes because, among other reasons, the 
    SPM was not a part of the state monitoring network, the data from the 
    monitor were utilized for research purposes, and the data were not 
    reported to EPA's Aerometric Information Retrieval System (AIRS).
        Commenters contend that in these three circumstances the Phoenix 
    situation closely parallels Beaumont-Port Arthur's; therefore, EPA 
    should treat the Phoenix SPM data in a like manner by excluding it. In 
    response, EPA notes that it has clarified its policy on the treatment 
    of SPM data since the April 2, 1996 action on Beaumont-Port Arthur, 
    resulting in all three of these circumstances no longer being grounds 
    for excluding SPM data.5
    ---------------------------------------------------------------------------
    
        \5\ This policy clarification is clearly permissible. Moreover, 
    even if it were a change or revision in policy, rather than a 
    clarification, it would also clearly be permissible. It is well 
    established that an agency may modify or reverse its interpretation 
    over time provided the agency supplies a reasoned basis for the 
    change. See e.g., Chevron U.S.A., Inc. v. NRDC, 467 U.S. 837, 863 
    (1984); Motor Vehicle Manufacturers Assoc. of the U.S., Inc. v. 
    State Farm Mutual Automobile Insurance Co., 463 U.S. 29, 42 
    (1983)(``we fully recognize that ``[regulatory] agencies do not 
    establish rules of conduct to last forever' * * * and that an agency 
    must be given ample latitude to ``adapt their rules and policies to 
    the demands of changing circumstances.' ''); Good Samaritan Hospital 
    v. Shalala, 113 S. Ct. 2151, 2161 (1993) (``[A]n administrative 
    agency is not disqualified from changing its mind * * *''). EPA 
    provided that reasonable basis in the SPM memo.
    ---------------------------------------------------------------------------
    
        Even if EPA's regulations and policy were that valid SPM data could 
    be excluded in some cases (which they are not), EPA believes that there 
    are two compelling reasons to use the SPM data in the Phoenix case. 
    These reasons are (1) the inadequacy of the Maricopa ozone monitoring 
    network and (2) the large discrepancy between air quality when measured 
    on Maricopa's SLAMS/NAMS network and when measured on the SLAMS/NAMS/
    SPM network.
        Since 1989, EPA has consistently found that Maricopa's existing 
    ozone SLAMS/NAMS network is inadequate to meet the monitoring 
    objectives of Part 58, more specifically the requirement for a site 
    measuring maximum concentration. A complete history of EPA's 
    evaluations of the Maricopa County monitoring network can be found in 
    Appendix D to the TSD. Numerous evaluations, including the recent VEOP, 
    have indicated that maximum ozone concentrations are occurring in the 
    rapidly-developing eastern-northeastern portion of
    
    [[Page 60007]]
    
    Maricopa County.6 While there are SLAMS sites located 
    throughout the central part of the Phoenix metropolitan area, there are 
    no SLAMS sites on the eastern edge of the Phoenix area. EPA has been 
    urging the County for nearly a decade to locate an ozone SLAMS monitor 
    in this area. The County has responded by locating numerous SPM sites 
    there (including the Fountain Hills SPM site) but has yet to convert 
    any of those sites into SLAMS or NAMS.
    ---------------------------------------------------------------------------
    
        \6\ This is borne out by the fact that all but one of the 1996 
    exceedances (the one at the Mesa SLAMS monitor) occurred at monitors 
    to the east or northeast of the metropolitan area.
    ---------------------------------------------------------------------------
    
        Based solely on this inadequate network, it is not possible for EPA 
    to accurately determine the area's compliance with the second statutory 
    criterion for extensions. Such a determination can only be made based 
    on data from a complete network that accurately reflects air quality in 
    the area; therefore, even if the SPM data were excluded from the 
    calculation, the Agency believes that it can properly exercise its 
    discretion to deny the State's extension request.
        The inadequate SLAMS network has led to a troubling discrepancy 
    between the air quality measured on the SLAMS/NAMS network and that 
    network when augmented by the SPM sites. This is illustrated by Table 1 
    below.
    
       Table 1.--Air Quality Comparison Between the SLAMS/NAMS Network and  
                             SLAMS/NAMS/SPM Network                         
                          [Maricopa County, 1994-1996]                      
    ------------------------------------------------------------------------
                                                                 SLAMS/NAMS/
                                                                 SPM network
                                                     SLAMS/NAMS    (w/o Mt. 
                                                      network    Ord or Blue
                                                                    Point)  
    ------------------------------------------------------------------------
    Number of Ozone Exceedance....................           10           44
    Number of Ozone Violations....................            2           13
    Number of Days over the Ozone Standard........            6           21
    ------------------------------------------------------------------------
    
        Clearly had EPA ignored the SPM data in Maricopa County, it would 
    have greatly underestimated the severity of the area's air quality and 
    inappropriately downplayed the impact of that air quality on public 
    health.
        Given the significant probability that the Phoenix area would 
    eventually face reclassification to serious even if it were granted an 
    extension, EPA questions the actual benefit of an extension to the 
    area. The commenters have made extensive comments on the adverse 
    impacts of reclassification, among them the short-term planning and 
    attainment deadlines facing newly serious areas and the imposition of 
    the more stringent NSR provisions. An extension would only compound the 
    problem of the short time frames while simply deferring the more 
    stringent NSR provisions for a short time. Hence, even if it were 
    within its discretion to grant an extension, EPA stands by its belief 
    that an extension is not appropriate at this time.
        Comment: A number of commenters noted that the Phoenix area had not 
    experienced any ozone exceedances in 1997 and asserted that this 
    indicates that the area's ozone problem has been solved. Noting that 
    the number of ozone exceedances peaked in 1995 and decreased in 1996, 
    the County stated that the ``reality check'' provided by the ambient 
    data indicates a trend contradictory to EPA's contention that the 
    Phoenix area is not close to attainment.
        Response: The clean ozone air quality that the Phoenix area has 
    experienced this year is very good news. These lower ozone readings are 
    due in some part to the introduction of reformulated gasoline and the 
    continuing implementation of other control programs such as the State's 
    premier vehicle emission inspection program.
        Unfortunately, a single year of ozone data cannot be used to 
    conclude that an area is close to attaining the 1-hour ozone standard. 
    The Phoenix area has experienced another year (1989) in which ozone 
    exceedances were not recorded, only to have the subsequent years show 
    widespread violations.
        Ozone levels are related to both emission levels and meteorology. 
    As a result of this meteorological component, ozone levels can vary 
    greatly from year to year. The 1-hour ozone standard accounts for the 
    weather's effect by evaluating compliance over a three-year period 
    (that is, an area can average no more than 1 exceedance per year over a 
    three-year period). 40 CFR 50.9 and part 50, Appendix H.
        There is some reason to believe that favorable weather patterns 
    this year have also contributed to Phoenix's low ozone readings. In 
    fact, 1997 has been an unusually good year for air quality throughout 
    the West. All areas in EPA Region 9 (with the exception of San Diego 
    and the Imperial Valley) have shown decreases in second-high ozone 
    levels from 1996 to 1997, many greater than Phoenix's. None of these 
    areas has introduced substantial new emission reduction programs, like 
    Phoenix, that would account for these decreases.
    
    D. Comments Related to the Regulatory Flexibility Act Requirements
    
        Comment: A number of commenters claimed that EPA failed to comply 
    with the Small Business Regulatory Enforcement Fairness Act of 1996 
    (SBREFA) in its proposal.7 The commenters claim that EPA's 
    certification that its action would not have a significant economic 
    impact on a substantial number of small entities is incorrect.
    ---------------------------------------------------------------------------
    
        \7\ SBREFA amended the Regulatory Flexibility Act (RFA), 5 
    U.S.C. 601 et seq.
    ---------------------------------------------------------------------------
    
        In support of their argument, the commenters state that small 
    businesses that emit 50 tpy or more of VOC will become subject to 
    reasonably available control technology (RACT) requirements, more 
    stringent NSR requirements, and the Title V operating permit program as 
    a result of the reclassification to serious and describe in more detail 
    the potential adverse impacts of these requirements on small 
    businesses.8
    ---------------------------------------------------------------------------
    
        \8\ EPA notes that businesses that emit 100 tpy or more are 
    already subject to some of these requirements under the moderate 
    area classification.
    ---------------------------------------------------------------------------
    
        The commenters further assert that EPA's reliance on Mid-Tex 
    Electric Cooperative, Inc. v. FERC, 773 F.2d 327 (D.C. Cir. 1985) for 
    not preparing a regulatory flexibility analysis is misplaced. Finally, 
    as an aside, the commenters note that Mid-Tex was decided a decade 
    before Congress enacted SBREFA and more significantly,
    
    [[Page 60008]]
    
    SBREFA imposes outreach requirements on EPA and OSHA which are imposed 
    on no other government agencies (citing 5 U.S.C. 609(b) and (d)).
        Response: The Regulatory Flexibility Act provides that, whenever an 
    agency is required to publish a general notice of rulemaking for a 
    proposed rule, the agency must prepare an initial regulatory 
    flexibility analysis for the proposed rule unless the head of the 
    agency certifies that the rule ``will not, if promulgated, have a 
    significant economic impact on a substantial number of small entities'' 
    (section 605(b)). EPA certified the proposed determination that the 
    Phoenix area did not attain the 1-hour ozone standard by the attainment 
    date and the proposed denial of the attainment date extension 
    request,9 based on its conclusion that the rule would not 
    establish requirements applicable to small entities and therefore would 
    not have a significant economic impact on small entities within the 
    meaning of the RFA. EPA is reaffirming that certification in this final 
    action.
    ---------------------------------------------------------------------------
    
        \9\ Commenters only addressed the potential impact on small 
    businesses of the reclassification (which is based on the 
    determination of nonattainment and the denial of the extension 
    request), and not the potential impacts of the SIP submittal 
    schedule. Therefore, the latter action is not discussed further in 
    response to this comment.
    ---------------------------------------------------------------------------
    
        As described elsewhere in this notice, CAA section 181(b) requires 
    EPA to determine whether an area has attained a NAAQS by the applicable 
    attainment deadline. If EPA finds that the area has not attained, the 
    section generally provides that the area ``shall be reclassified by 
    operation of law'' (section 181(b)(2)(A)). The section requires EPA to 
    publish a notice in the Federal Register identifying each area the 
    Agency has determined to be in nonattainment and ``identifying'' the 
    resulting reclassification of the area (section 181(b)(2)(B)).
        While determinations that trigger a reclassification do not 
    themselves establish regulatory requirements applicable to small (or 
    large) entities, they may, as noted by the commenters, trigger the 
    application to small entities of regulatory requirements established by 
    other rulemakings under the Clean Air Act (and conceivably other 
    statutes). EPA, however, has concluded that the word ``impact'' as used 
    in the RFA does not include regulatory requirements that the rule does 
    not establish, but may trigger under the terms of other rules or 
    statutory provisions. For the reasons discussed at length in the TSD, 
    EPA believes that the RFA's text, legislative history and case law, 
    including Mid-Tex, all make clear that RFA analysis is limited to the 
    requirements of the rule being promulgated.
        A more detailed discussion of this issue may be found in the TSD 
    for this rulemaking.
    
    E. Comments Related to Mitigating the Adverse Impacts of 
    Reclassification
    
        Many commenters suggested several steps that could be taken to 
    mitigate the adverse impacts of the reclassification to serious. While 
    EPA will briefly respond to most of the suggestions here, many involve 
    issues that are being dealt with in forums other than this action. EPA 
    will continue to work with interested parties in Arizona to address 
    these issues in those other forums. EPA also received questions 
    regarding the implementation of NSR and Title V requirements. Those 
    questions are addressed in the TSD.
        Comment: Commenters requested that EPA suspend further enforcement 
    of the 1-hour ozone NAAQS in the Phoenix Metropolitan area by amending 
    its ``implementation policy'' for the revised 8-hour ozone NAAQS. 
    Commenters contend that EPA has the flexibility and authority to do so 
    under the ``implementation policy'' by citing the policy's statements 
    that implementation of the new 8-hour ozone NAAQS should be ``carried 
    out to maximize common sense, flexibility, and cost effectiveness.'' 62 
    FR 38421 (July 18, 1997).
        Response: The document referred to and cited by the commenters as 
    the ``Implementation Policy,'' 62 FR 38421 (July 18, 1997) is a 
    memorandum to the EPA Administrator entitled ``Implementation of 
    Revised Air Quality Standards for Ozone and Particulate Matter'' 
    (``President's Memorandum'') signed by President Clinton for the 
    implementation of the revised ozone and particulate matter standards. 
    Attached to that memorandum is a strategy, ``Implementation Plan for 
    Revised Air Quality Standards'' (``Implementation Plan'') outlining the 
    steps for implementing these standards. EPA is currently developing 
    guidance and proposed rules consistent with the President's Memorandum. 
    EPA is committed to the goals of maximizing common sense, flexibility, 
    and cost effectiveness in implementing the revised NAAQS.
        EPA's action reclassifying Phoenix as a serious ozone nonattainment 
    area is in no way inconsistent with those goals. Furthermore, it is 
    consistent with the continued applicability of the 1-hour standard and 
    subpart 2 as provided for in EPA's rulemaking on the ozone NAAQS. See 
    62 FR 38856, 38873. To the extent that the comments concern that issue, 
    they are not appropriately raised in this rulemaking.
        Neither the provisions of 40 CFR 50.9, as revised (62 FR 38856, 
    38894), nor any other statutory or regulatory provisions, provide EPA 
    with the authority to suspend enforcement of the 1-hour NAAQS in 
    Phoenix. Moreover, as noted earlier, the Phoenix area has not complied 
    with some of the most significant serious area requirements (e.g., the 
    9 percent rate of progress requirement). Finally EPA believes that 
    complying with those requirements will have a positive, not 
    detrimental, effect on the ability of Phoenix to comply with the 8-hour 
    standard. Additional comments related to this point are addressed in 
    the TSD.
        Comment: The commenters requested that EPA execute an agreement 
    with the State of Arizona to act upon submitted SIP revisions within a 
    fixed period of time based upon priorities identified by the State and 
    to set a schedule for acting on future SIP revisions.
        Response: EPA Region 9 receives hundreds of requests each year to 
    revise federally-enforceable SIPs from over 40 different state and 
    local air pollution agencies. These include requests to modify 
    inventories, attainment demonstrations, and administrative, permit, and 
    prohibitory regulations. Given the available resources, Region 9 is 
    unable to review and act on each of these requests as quickly as it 
    would like. As a result, the Agency relies on the state and local 
    agencies to prioritize submittals so that the most important ones to 
    the state and local agencies can be acted on first. Region 9 does 
    expect to take final action soon on several revisions submitted by 
    Maricopa County and has recently contacted the Arizona air pollution 
    agencies to request that they identify those submittals that need to be 
    acted quickly in order to issue Title V permits or for other purposes. 
    Region 9 will process submittals in the priority order requested by 
    these agencies.
        Comment: Commenters requested that EPA approve EPA Arizona 
    Administrative Code (A.A.C.) R18-2-310 (The Arizona Excess Emissions 
    Rule) as a revision to the SIP.
        Response: This comment is closely related to a lawsuit brought by 
    the Arizona Mining Association with regard to EPA's interim approval of 
    Arizona's Title V operating permit program on October 30, 1996 (61 FR 
    55910). The parties involved in the suit have had constructive 
    exchanges, which EPA expects to continue, on the appropriate treatment 
    of the Arizona Excess Emissions Rule during the settlement discussions.
    
    [[Page 60009]]
    
        Comment: Commenters request that EPA adopt realistic, streamlined 
    national Prevention of Significant Deterioration (PSD) and New Source 
    Review (NSR) regulations.
        Response: EPA recognizes that its current regulations governing the 
    new source review programs mandated by both parts C (PSD) and D (NSR) 
    of Title I of the Clean Air Act are a source of concern for many 
    people. On July 23, 1996, EPA proposed major revisions (known as the 
    NSR reform proposal) to its PSD and NSR regulations. 61 FR 38250. EPA 
    has received many comments on its proposal and is currently carefully 
    reviewing and considering these comments as it develops the final rule. 
    EPA's goal for this final rule is to simplify its NSR and PSD 
    regulations consistent with the Clean Air Act requirements for those 
    programs.
        Comment: Commenters request that EPA adopt a regulatory affirmative 
    defense for sources with potential VOC emissions of from 50 to 100 tons 
    per year that will apply to enforcement of the NSR requirements in 
    ozone nonattainment areas that meet certain criteria.
        Response: It appears that the commenters are attempting to ease the 
    perceived regulatory burden that will be imposed on sources that emit 
    between 50 and 100 tons of VOC per year as a result of the 
    reclassification. EPA will study the proposal, but its initial response 
    is that the commenters' suggested approach is not the most effective 
    means for addressing their underlying concerns. EPA believes it may be 
    constructive to engage in a dialogue regarding possible mechanisms for 
    limiting sources' potential to emit to below the thresholds that 
    trigger NSR. However, where a source's actual emissions exceed the 
    major source threshold or the source is unable to reduce its potential 
    to emit below the major source threshold, the source is subject to 
    major NSR.
        Comment: Commenters request that EPA continue to expeditiously act 
    to approve the Arizona Clean Burning Gasoline Program.
        Response: EPA has been very pleased to support Arizona's efforts to 
    bring reformulated gasoline to the Phoenix area. In addition to 
    approving the Governor's request to join the federal program and the 
    State's request for lower RVP limits, the Agency participated in the 
    development of the new CBG rules in order to correct any approval 
    problems early in the process. EPA is now working closely with ADEQ to 
    act on the recent submittal of the CBG rules. This work is among EPA's 
    highest priorities.
    
    F. Other Comments
    
        Comment: Senator Kyl and Representative Shadegg commented that by 
    using data collected from 1994 through 1996 as the basis for its 
    decision, EPA has not taken into account the significant and positive 
    effects of the RFG program and other actions taken by the State of 
    Arizona to reduce ozone pollution and that this results in an 
    inaccurate and unwarranted reclassification of Phoenix to serious. They 
    comment further that this violates principles in President's July 18, 
    1997 memorandum that ``implementation of the air quality standards is 
    to be carried out to maximize common sense, flexibility, and cost 
    effectiveness.''
        Response: EPA agrees that the 1994-1996 data do not reflect the 
    1997 implementation of the RFG program and that this program will have 
    a continuing positive effect on ozone levels in the Phoenix area. EPA, 
    however, is constrained by statute from considering 1997 data in its 
    finding of failure to attain and denial of the extension request.
        CAA section 181(b)(4) requires EPA to determine if an area has 
    attained ``as of the attainment date.'' For Phoenix, the attainment 
    date is November 15, 1996, and under long-established procedures, 
    determining attainment as of that date requires reviewing data from the 
    three years immediately preceding that date or 1994 through 1996. 40 
    CFR 50.9 and part 50, Appendix H.
        The criterion for extensions in CAA section 181(a)(5)(B) is that 
    ``no more than one exceedance of the [ozone standard] has occurred in 
    the area in the year preceding the Extension Year.'' The extension year 
    is 1997, thus the ``year preceding'' is 1996.
    
    VI. Final Action
    
        EPA is finding that the Phoenix ozone nonattainment area did not 
    attain the ozone NAAQS by November 15, 1996, the CAA attainment date 
    for moderate ozone nonattainment areas. EPA is also denying Arizona's 
    application for a one-year extension of the attainment date. As a 
    result of this finding and denial, the Phoenix ozone nonattainment area 
    is reclassified by operation of law as a serious ozone nonattainment 
    area on the effective date of today's action and the submittal of the 
    serious area SIP revisions will be due no later than 12 months from 
    this effective date. The requirements for this SIP submittal are 
    established in CAA section 182(c) and applicable EPA guidance.
        Nothing in this action should be construed as permitting, allowing 
    or establishing a precedent for any future action. Each finding of 
    failure to attain, request for an extension of an attainment date, and 
    establishment of a SIP submittal date shall be considered separately 
    and shall be based on the factual situation of the area under 
    consideration and in relation to relevant statutory and regulatory 
    requirements.
    
    VI. Administrative Requirements
    
    A. Executive Order (E.O.) 12866
    
        Under E.O. 12866, (58 FR 51735, October 4, 1993), EPA is required 
    to determine whether today's action is a ``significant regulatory 
    action'' within the meaning of the E.O., and therefore should be 
    subject to OMB review, economic analysis, and the requirements of the 
    E.O. See E.O. 12866, sec. 6(a)(3). The E.O. defines, in sec. 3(f), a 
    ``significant regulatory action'' as a regulatory action that is likely 
    to result in a rule that may meet at least one of four criteria 
    identified in section 3(f), including,
        (1) Have an annual effect on the economy of $100 million or more or 
    adversely affect in a material way the economy, a sector of the 
    economy, productivity, competition, jobs, the environment, public 
    health or safety, or State, local, or tribal governments or 
    communities;
        (2) Create a serious inconsistency or otherwise interfere with an 
    action taken or planned by another agency;
        (3) Materially alter the budgetary impact of entitlements, grants, 
    user fees, or loan programs or the rights and obligations of recipients 
    thereof; or
        (4) Raise novel legal or policy issues arising out of legal 
    mandates, the President's priorities, or the principles set forth in 
    the Executive Order.
        EPA has determined that neither the finding of failure to attain it 
    is making today, the denial of Arizona's request for a one-year 
    extension of the attainment data, nor the establishment of SIP 
    submittal schedule would result in any of the effects identified in 
    E.O. 12866 sec. 3(f). As discussed in the response to comments above 
    and in more detail in the TSD, findings of failure to attain under 
    section 181(b)(2) of the Act are based upon air quality considerations, 
    and reclassifications must occur by operation of law in light of 
    certain air quality conditions. These findings do not, in and of 
    themselves, impose any new requirements on any sectors of the economy. 
    In addition, because the statutory requirements are clearly defined 
    with respect to the differently classified areas, and because
    
    [[Page 60010]]
    
    those requirements are automatically triggered by classifications that, 
    in turn, are triggered by air quality values, findings of failure to 
    attain and reclassification cannot be said to impose a materially 
    adverse impact on State, local, or tribal governments or communities. 
    The same is true of the determination not to grant a one-year 
    extension, in light of the fact that this determination is also based 
    in part on air quality values. Similarly, the establishment of new SIP 
    submittal schedules merely establishes the dates by which SIPs must be 
    submitted, and does not adversely affect entities.
    
    B. Regulatory Flexibility
    
        Under the Regulatory Flexibility Act, 5 U.S.C. 601 et seq., EPA 
    must prepare a regulatory flexibility analysis assessing the impact of 
    any proposed or final rule on small entities. 5 U.S.C. 603 and 604. 
    Alternatively, EPA may certify that the rule will not have a 
    significant economic impact on a substantial number of small entities. 
    Small entities include small businesses, small not-for-profit 
    enterprises, and government entities with jurisdiction over populations 
    of less than 50,000.
        As discussed in the response to comments above and in more detail 
    in the TSD, a finding of failure to attain (and the consequent 
    reclassification by operation of law of the nonattainment area) under 
    section 181(b)(2) of the Act, a denial of a one-year extension request, 
    and the establishment of a SIP submittal schedule for a reclassified 
    area, do not, in-and-of-themselves, directly impose any new 
    requirements on small entities. See Mid-Tex Electric Cooperative, Inc. 
    v. FERC, 773 F.2d 327 (D.C. Cir. 1985) (agency's certification need 
    only consider the rule's impact on entities subject to the requirements 
    of the rule). Instead, this rulemaking simply makes a factual 
    determination and establishes a schedule to require States to submit 
    SIP revisions, and does not directly regulate any entities. Therefore, 
    pursuant to 5 U.S.C. 605(b), EPA reaffirms its certification made in 
    the proposal (62 FR 46233) that today's final action will not have a 
    significant impact on a substantial number of small entities within the 
    meaning of those terms for RFA purposes.
    
    C. Unfunded Mandates Reform Act
    
        Title II of the Unfunded Mandates Reform Act of 1995 (UMRA), Pub. 
    L. 104-4, establishes requirements for Federal agencies to assess the 
    effects of their regulatory actions on State, local, and tribal 
    governments and the private sector. Under section 202 of the UMRA, EPA 
    generally must prepare a written statement, including a cost-benefit 
    analysis, when EPA promulgates ``any general notice of proposed 
    rulemaking that is likely to result in promulgation of any rule that 
    includes any Federal mandate that may result in the expenditures by 
    State, local, and tribal governments, in the aggregate, or by the 
    private sector, of $100 million or more'' in any one year. A ``Federal 
    mandate'' is defined, under section 101 of UMRA, as a provision that 
    ``would impose an enforceable duty'' upon the private sector or State, 
    local, or tribal governments'', with certain exceptions not here 
    relevant. Under section 203 of UMRA, EPA must develop a small 
    government agency plan before EPA ``establish[es] any regulatory 
    requirements that might significantly or uniquely affect small 
    governments''. Under section 204 of UMRA, EPA is required to develop a 
    process to facilitate input by elected officers of State, local, and 
    tribal governments for EPA's ``regulatory proposals'' that contain 
    significant Federal intergovernmental mandates. Under section 205 of 
    UMRA, before EPA promulgates ``any rule for which a written statement 
    is required under [UMRA sec.] 202'', EPA must identify and consider a 
    reasonable number of regulatory alternatives and either adopt the least 
    costly, most cost-effective or least burdensome alternative that 
    achieves the objectives of the rule, or explain why a different 
    alternative was selected.
        Generally, EPA has determined that the provisions of sections 202 
    and 205 of UMRA do not apply to this decision. Under section 202, EPA 
    is to prepare a written statement that is to contain assessments and 
    estimates of the costs and benefits of a rule containing a Federal 
    Mandate ``unless otherwise prohibited by law.'' Congress clarified that 
    ``unless otherwise prohibited by law'' referred to whether an agency 
    was prohibited from considering the information in the rulemaking 
    process, not to whether an agency was prohibited from collecting the 
    information. The Conference Report on UMRA states, ``This section [202] 
    does not require the preparation of any estimate or analysis if the 
    agency is prohibited by law from considering the estimate or analysis 
    in adopting the rule.'' 141 Cong. Rec. H3063 (Daily ed. March 13, 
    1995). Because the Clean Air Act prohibits, when determining whether an 
    area attained the ozone standard or met the criteria for an extension, 
    from considering the types of estimates and assessments described in 
    section 202, UMRA does not require EPA to prepare a written statement 
    under section 202. Although the establishment of a SIP submission 
    schedule may impose a federal mandate, this mandate would not create 
    costs of $100 million or more, and therefore, no analysis is required 
    under section 202. The requirements in section 205 do not apply because 
    those requirements for rules ``for which a written statement is 
    required under section 202 * * *.''
        With regard to the outreach described in UMRA section 204, EPA 
    discussed its proposed action in advance of the proposal with State 
    officials.
        Finally, section 203 of UMRA does not apply to today's action 
    because the regulatory requirements finalized today--the SIP submittal 
    schedule--affect only the State of Arizona, which is not a small 
    government under UMRA.
    
    D. Submission to Congress and the General Accounting Office
    
        Under section 801(a)(1)(A) of the Administrative Procedures Act 
    (APA) as amended by the Small Business Regulatory Enforcement Fairness 
    Act of 1996, EPA submitted 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 General Accounting 
    Office prior to publication of the rule in today's Federal Register. 
    This rule is not a ``major rule'' as defined by section 804(2) of the 
    APA as amended.
    
    E. Petitions for Judicial Review
    
        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 January 5, 1998. 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 in 40 CFR Part 81
    
        Environmental protection, Air pollution control, Intergovernmental 
    relations, Ozone.
    
        Dated: October 27, 1997.
    Harry Seraydarian,
    Acting Regional Administrator.
    
        Part 81, chapter I, title 40 of the Code of Federal Regulations is 
    amended as follows:
    
    [[Page 60011]]
    
    PART 81--[AMENDED]
    
        1. The authority citation for part 81 continues to read as follows:
    
        Authority: 42 U.S.C. 7401-7671q.
    
        2. Section 81.303 is amended by revising the table for Arizona-- 
    Ozone, for the Phoenix Area to read as follows:
    
    
    Sec. 81.303  Arizona
    
    * * * * *
    
                                                                          Arizona-Ozone                                                                     
    --------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                    Designation                                           Classification                    
                 Designated area             ---------------------------------------------------------------------------------------------------------------
                                                  Date                        Type                        Date                        Type                  
    --------------------------------------------------------------------------------------------------------------------------------------------------------
    Phoenix Area:                                                                                                                                           
        Maricopa County (part)..............     11/15/90  Nonattainment............................      12/8/97  Serious.                                 
            The Urban Planning Area of the                                                                                                                  
             Maricopa Association of                                                                                                                        
             Governments is bounded as                                                                                                                      
             follows:                                                                                                                                       
                1.Commencing at a point                                                                                                                     
                 which is at the                                                                                                                            
                 intersection of the eastern                                                                                                                
                 line of Range 7 East, Gila                                                                                                                 
                 and Salt River Baseline and                                                                                                                
                 Meridian, and the southern                                                                                                                 
                 line of Township 2 South,                                                                                                                  
                 said point is the                                                                                                                          
                 southeastern corner of the                                                                                                                 
                 Maricopa Association of                                                                                                                    
                 Governments Urban Planning                                                                                                                 
                 Area, which is the point of                                                                                                                
                 beginning;                                                                                                                                 
                2. Thence, proceed northerly                                                                                                                
                 along the eastern line of                                                                                                                  
                 Range 7 East which is the                                                                                                                  
                 common boundary between                                                                                                                    
                 Maricopa and Pinal                                                                                                                         
                 Counties, as described in                                                                                                                  
                 Arizona Revised Statute                                                                                                                    
                 Section 11-109, to a point                                                                                                                 
                 where the eastern line of                                                                                                                  
                 Range 7 East intersects the                                                                                                                
                 northern line of Township 1                                                                                                                
                 North, said point is also                                                                                                                  
                 the intersection of the                                                                                                                    
                 Maricopa County Line and                                                                                                                   
                 the Tonto National Forest                                                                                                                  
                 Boundary, as established by                                                                                                                
                 Executive Order 869 dated                                                                                                                  
                 July 1, 1908, as amended                                                                                                                   
                 and showed on the U.S.                                                                                                                     
                 Forest Service 1969                                                                                                                        
                 Planimetric Maps;                                                                                                                          
                3. Thence, westerly along                                                                                                                   
                 the northern line of                                                                                                                       
                 Township 1 North to                                                                                                                        
                 approximately the southwest                                                                                                                
                 corner of the southeast                                                                                                                    
                 quarter of Section 35,                                                                                                                     
                 Township 2 North, Range 7                                                                                                                  
                 East, said point being the                                                                                                                 
                 boundary of the Tonto                                                                                                                      
                 National Forest and Usery                                                                                                                  
                 Mountain Semi-Regional                                                                                                                     
                 Park;                                                                                                                                      
                4. Thence, northerly along                                                                                                                  
                 the Tonto National Forest                                                                                                                  
                 Boundary, which is                                                                                                                         
                 generally the western line                                                                                                                 
                 of the east half of                                                                                                                        
                 Sections 26 and 35 of                                                                                                                      
                 Township 2 North, Range 7                                                                                                                  
                 East, to a point which is                                                                                                                  
                 where the quarter section                                                                                                                  
                 line intersects with the                                                                                                                   
                 northern line of Section                                                                                                                   
                 26, Township 2 North, Range                                                                                                                
                 7 East, said point also                                                                                                                    
                 being the northeast corner                                                                                                                 
                 of the Usery Mountain Semi-                                                                                                                
                 Regional Park;                                                                                                                             
                5. Thence, westerly along                                                                                                                   
                 the Tonto National Forest                                                                                                                  
                 Boundary, which is                                                                                                                         
                 generally the south line of                                                                                                                
                 Section 19, 20, 21 and 22                                                                                                                  
                 and the southern line of                                                                                                                   
                 the west half of Section                                                                                                                   
                 23, Township 2 North, Range                                                                                                                
                 7 East, to a point which is                                                                                                                
                 the southwest corner of                                                                                                                    
                 Section 19, Township 2                                                                                                                     
                 North, Range 7 East;                                                                                                                       
                6. Thence, northerly along                                                                                                                  
                 the Tonto National Forest                                                                                                                  
                 Boundary to a point where                                                                                                                  
                 the Tonto National Forest                                                                                                                  
                 Boundary intersects with                                                                                                                   
                 the eastern boundary of the                                                                                                                
                 Salt River Indian                                                                                                                          
                 Reservation, generally                                                                                                                     
                 described as the center                                                                                                                    
                 line of the Salt River                                                                                                                     
                 Channel;                                                                                                                                   
                7. Thence, northeasterly and                                                                                                                
                 northerly along the common                                                                                                                 
                 boundary of the Tonto                                                                                                                      
                 National Forest and the                                                                                                                    
                 Salt River Indian                                                                                                                          
                 Reservation to a point                                                                                                                     
                 which is the northeast                                                                                                                     
                 corner of the Salt River                                                                                                                   
                 Indian Reservation and the                                                                                                                 
                 southeast corner of the                                                                                                                    
                 Fort McDowell Indian                                                                                                                       
                 Reservation, as shown on                                                                                                                   
                 the plat dated July 22,                                                                                                                    
                 1902, and recorded with the                                                                                                                
                 U.S. Government on June 15,                                                                                                                
                 1902;                                                                                                                                      
    
    [[Page 60012]]
    
                                                                                                                                                            
                8. Thence, northeasterly                                                                                                                    
                 along the common boundary                                                                                                                  
                 between the Tonto National                                                                                                                 
                 Forest and the Fort                                                                                                                        
                 McDowell Indian Reservation                                                                                                                
                 to a point which is the                                                                                                                    
                 northeast corner of the                                                                                                                    
                 Fort McDowell Indian                                                                                                                       
                 Reservation;                                                                                                                               
                9. Thence, southwesterly                                                                                                                    
                 along the northern boundary                                                                                                                
                 of the Fort McDowell Indian                                                                                                                
                 Reservation, which line is                                                                                                                 
                 a common boundary with the                                                                                                                 
                 Tonto National Forest, to a                                                                                                                
                 point where the boundary                                                                                                                   
                 intersects with the eastern                                                                                                                
                 line of Section 12,                                                                                                                        
                 Township 4 North, Range 6                                                                                                                  
                 East;                                                                                                                                      
                10. Thence, northerly along                                                                                                                 
                 the eastern line of Range 6                                                                                                                
                 East to a point where the                                                                                                                  
                 eastern line of Range 6                                                                                                                    
                 East intersects with the                                                                                                                   
                 southern line of Township 5                                                                                                                
                 North, said line is the                                                                                                                    
                 boundary between the Tonto                                                                                                                 
                 National Forest and the                                                                                                                    
                 east boundary of McDowell                                                                                                                  
                 Mountain Regional Park;                                                                                                                    
                11. Thence, westerly along                                                                                                                  
                 the southern line of                                                                                                                       
                 Township 5 North to a point                                                                                                                
                 where the southern line                                                                                                                    
                 intersects with the eastern                                                                                                                
                 line of Range 5 East which                                                                                                                 
                 line is the boundary of                                                                                                                    
                 Tonto National Forest and                                                                                                                  
                 the north boundary of                                                                                                                      
                 McDowell Mountain Regional                                                                                                                 
                 Park;                                                                                                                                      
                12. Thence, northerly along                                                                                                                 
                 the eastern line of Range 5                                                                                                                
                 East to a point where the                                                                                                                  
                 eastern line of Range 5                                                                                                                    
                 East intersects with the                                                                                                                   
                 northern line of Township 5                                                                                                                
                 North, which line is the                                                                                                                   
                 boundary of the Tonto                                                                                                                      
                 National Forest;                                                                                                                           
                13. Thence, westerly along                                                                                                                  
                 the northern line of                                                                                                                       
                 Township 5 North to a point                                                                                                                
                 where the northern line of                                                                                                                 
                 Township 5 North intersects                                                                                                                
                 with the easterly line of                                                                                                                  
                 Range 4 East, said line is                                                                                                                 
                 the boundary of Tonto                                                                                                                      
                 National Forest;                                                                                                                           
                14. Thence, northerly along                                                                                                                 
                 the eastern line of Range 4                                                                                                                
                 East to a point where the                                                                                                                  
                 eastern line of Range 4                                                                                                                    
                 East intersects with the                                                                                                                   
                 northern line of Township 6                                                                                                                
                 North, which line is the                                                                                                                   
                 boundary of the Tonto                                                                                                                      
                 National Forest;                                                                                                                           
                15. Thence, westerly along                                                                                                                  
                 the northern line of                                                                                                                       
                 Township 6 North to a point                                                                                                                
                 of intersection with the                                                                                                                   
                 Maricopa-Yavapai County                                                                                                                    
                 line, which is generally                                                                                                                   
                 described in Arizona                                                                                                                       
                 Revised Statute Section 11-                                                                                                                
                 109 as the center line of                                                                                                                  
                 the Aqua Fria River (Also                                                                                                                  
                 the north end of Lake                                                                                                                      
                 Pleasant);                                                                                                                                 
                16. Thence, southwesterly                                                                                                                   
                 and southerly along the                                                                                                                    
                 Maricopa-Yavapai County                                                                                                                    
                 line to a point which is                                                                                                                   
                 described by Arizona                                                                                                                       
                 Revised Statute Section 11-                                                                                                                
                 109 as being on the center                                                                                                                 
                 line of the Aqua Fria                                                                                                                      
                 River, two miles southerly                                                                                                                 
                 and below the mouth of                                                                                                                     
                 Humbug Creek;                                                                                                                              
                17. Thence, southerly along                                                                                                                 
                 the center line of Aqua                                                                                                                    
                 Fria River to the                                                                                                                          
                 intersection of the center                                                                                                                 
                 line of the Aqua Fria River                                                                                                                
                 and the center line of                                                                                                                     
                 Beardsley Canal, said point                                                                                                                
                 is generally in the                                                                                                                        
                 northeast quarter of                                                                                                                       
                 Section 17, Township 5                                                                                                                     
                 North, Range 1 East, as                                                                                                                    
                 shown on the U.S.                                                                                                                          
                 Geological Survey's Baldy                                                                                                                  
                 Mountain, Arizona                                                                                                                          
                 Quadrangle Map, 7.5 Minute                                                                                                                 
                 series (Topographic), dated                                                                                                                
                 1964;                                                                                                                                      
                18. Thence, southwesterly                                                                                                                   
                 and southerly along the                                                                                                                    
                 center line of Beardsley                                                                                                                   
                 Canal to a point which is                                                                                                                  
                 the center line of                                                                                                                         
                 Beardsley Canal where it                                                                                                                   
                 intersects with the center                                                                                                                 
                 line of Indian School Road;                                                                                                                
    
    [[Page 60013]]
    
                                                                                                                                                            
                19. Thence, westerly along                                                                                                                  
                 the center line of West                                                                                                                    
                 Indian School Road to a                                                                                                                    
                 point where the center line                                                                                                                
                 of West Indian School Road                                                                                                                 
                 intersects with the center                                                                                                                 
                 line of North Jackrabbit                                                                                                                   
                 Trail;                                                                                                                                     
                20. Thence, southerly along                                                                                                                 
                 the center line of                                                                                                                         
                 Jackrabbit Trail                                                                                                                           
                 approximately nine and                                                                                                                     
                 three-quarter miles to a                                                                                                                   
                 point where the center line                                                                                                                
                 of Jackrabbit Trail                                                                                                                        
                 intersects with the Gila                                                                                                                   
                 River, said point is                                                                                                                       
                 generally on the north-                                                                                                                    
                 south quarter section line                                                                                                                 
                 of Section 8, Township 1                                                                                                                   
                 South, Range 2 West;                                                                                                                       
                21. Thence, northeasterly                                                                                                                   
                 and easterly up the Gila                                                                                                                   
                 River to a point where the                                                                                                                 
                 Gila River intersects with                                                                                                                 
                 the northern extension of                                                                                                                  
                 the western boundary of                                                                                                                    
                 Estrella Mountain Regional                                                                                                                 
                 Park, which point is                                                                                                                       
                 generally the quarter                                                                                                                      
                 corner of the northern line                                                                                                                
                 of Section 31, Township 1                                                                                                                  
                 North, Range 1 West;                                                                                                                       
                22. Thence, southerly along                                                                                                                 
                 the extension of the                                                                                                                       
                 western boundary and along                                                                                                                 
                 the western boundary of                                                                                                                    
                 Estrella Mountain Regional                                                                                                                 
                 Park to a point where the                                                                                                                  
                 southern extension of the                                                                                                                  
                 western boundary of                                                                                                                        
                 Estrella Mountain Regional                                                                                                                 
                 Park intersects with the                                                                                                                   
                 southern line of Township 1                                                                                                                
                 South;                                                                                                                                     
                23. Thence, easterly along                                                                                                                  
                 the southern line of                                                                                                                       
                 Township 1 South to a point                                                                                                                
                 where the south line of                                                                                                                    
                 Township 1 South intersects                                                                                                                
                 with the western line of                                                                                                                   
                 Range 1 East, which line is                                                                                                                
                 generally the southern                                                                                                                     
                 boundary of Estrella                                                                                                                       
                 Mountain Regional Park;                                                                                                                    
                24. Thence, southerly along                                                                                                                 
                 the western line of Range 1                                                                                                                
                 East to the southwest                                                                                                                      
                 corner of Section 18,                                                                                                                      
                 Township 2 South, Range 1                                                                                                                  
                 East, said line is the                                                                                                                     
                 western boundary of the                                                                                                                    
                 Gila River Indian                                                                                                                          
                 Reservation;                                                                                                                               
                25. Thence, easterly along                                                                                                                  
                 the southern boundary of                                                                                                                   
                 the Gila River Indian                                                                                                                      
                 Reservation which is the                                                                                                                   
                 southern line of Sections                                                                                                                  
                 13, 14, 15, 16, 17, and 18,                                                                                                                
                 Township 2 South, Range 1                                                                                                                  
                 East, to the boundary                                                                                                                      
                 between Maricopa and Pinal                                                                                                                 
                 Counties as described in                                                                                                                   
                 Arizona Revised Statues                                                                                                                    
                 Section 11-109 and 11-113,                                                                                                                 
                 which is the eastern line                                                                                                                  
                 of Range 1 East;                                                                                                                           
                26. Thence, northerly along                                                                                                                 
                 the eastern boundary of                                                                                                                    
                 Range 1 East, which is the                                                                                                                 
                 common boundary between                                                                                                                    
                 Maricopa and Pinal                                                                                                                         
                 Counties, to a point where                                                                                                                 
                 the eastern line of Range 1                                                                                                                
                 East intersects the Gila                                                                                                                   
                 River;                                                                                                                                     
                27. Thence, southerly up the                                                                                                                
                 Gila River to a point where                                                                                                                
                 the Gila River intersects                                                                                                                  
                 with the southern line of                                                                                                                  
                 Township 2 South; and                                                                                                                      
                28. Thence, easterly along                                                                                                                  
                 the southern line of                                                                                                                       
                 Township 2 South to the                                                                                                                    
                 point of beginning which is                                                                                                                
                 a point where the southern                                                                                                                 
                 line of Township 2 South                                                                                                                   
                 intersects with the eastern                                                                                                                
                 line Range 7 East                                                                                                                          
    --------------------------------------------------------------------------------------------------------------------------------------------------------
    
    * * * * *
    [FR Doc. 97-29396 Filed 11-5-97; 8:45 am]
    BILLING CODE 6560-50-P
    
    
    

Document Information

Effective Date:
12/8/1997
Published:
11/06/1997
Department:
Environmental Protection Agency
Entry Type:
Rule
Action:
Final rule.
Document Number:
97-29396
Dates:
December 8, 1997.
Pages:
60001-60013 (13 pages)
Docket Numbers:
AZ-001-BU, FRL-5917-4
PDF File:
97-29396.pdf
CFR: (1)
40 CFR 81.303