[Federal Register: June 12, 2009 (Volume 74, Number 112)]
[Proposed Rules]
[Page 27957-27972]
[DOCID:fr12jn09-23]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 52 and 81

[EPA-R05-OAR-2009-0221; FRL-8917-9]

Approval and Promulgation of Implementation Plans and Designation
of Areas for Air Quality Planning Purposes; Ohio; Redesignation of the
Cleveland-Akron-Lorain Area to Attainment for Ozone

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: EPA is proposing several related actions affecting the
Cleveland-Akron-Lorain, Ohio 8-hour ozone nonattainment area. EPA is
proposing to make a determination under the Clean Air Act (CAA) that
the Cleveland-Akron-Lorain nonattainment area has attained the 8-hour
ozone National Ambient Air Quality Standard (NAAQS). The Cleveland-
Akron-Lorain area includes Ashtabula, Cuyahoga, Geauga, Lake, Lorain,
Medina, Portage, and Summit Counties. This determination is based on
quality-assured ambient air quality monitoring data for the 2006-2008
ozone seasons that demonstrate that the 8-hour ozone NAAQS has been
attained in the area. EPA is also proposing to approve, as a revision
to the Ohio State Implementation Plan (SIP), the State's plan for
maintaining the 8-hour ozone NAAQS through 2020 in the area. EPA is
proposing to approve a request from the State of Ohio to redesignate
the Cleveland-Akron-Lorain area to attainment of the 8-hour ozone
NAAQS. The Ohio Environmental Protection Agency (Ohio EPA) submitted
this request on March 17, 2009, and supplemented it on April 24, 2009.
    EPA is proposing to approve the 2002 base year emissions inventory
for the Cleveland-Akron-Lorain area as meeting the requirements of the
CAA. If EPA's determination that the area has attained the standard is
made final, under the provisions of EPA's ozone implementation rule,
the requirement to submit certain planning SIPS related to attainment,
including attainment demonstration requirements (the reasonably
available control measure (RACM) requirement, the reasonable further
progress (RFP) and attainment demonstration requirements, and the
requirement for contingency measures) are not applicable to the area as
long as it continues to attain the NAAQS and would cease to apply upon
redesignation. EPA is proposing to approve Ohio's 15 percent (15%) Rate
of Progress (ROP) plan as meeting the requirements of the CAA for the
1-hour ozone standard. EPA is also proposing to approve a waiver, for
the Cleveland-Akron-Lorain area, from the oxides of nitrogen
(NOX) requirements of section

182(f) of the CAA. Finally, EPA finds adequate and is proposing to
approve the State's 2012 and 2020 Motor Vehicle Emission Budgets
(MVEBs) for the Cleveland-Akron-Lorain area.

DATES: Comments must be received on or before July 13, 2009.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R05-
OAR-2009-0221, by one of the following methods:
    I. http://www.regulations.gov: Follow the on-line instructions for
submitting comments.
    II. E-mail<EMAIL_ADDRESS>    III. Fax:<PHONE_NUMBER>.
    IV. Mail: John M. Mooney, Chief, Criteria Pollutant Section, Air
Programs Branch (AR-18J), U.S. Environmental Protection Agency, 77 West
Jackson Boulevard, Chicago, Illinois 60604.
    V. Hand delivery: John M. Mooney, Chief, Criteria Pollutant
Section, Air Programs Branch (AR-18J), U.S. Environmental Protection
Agency, 77 West Jackson Boulevard, 18th floor, Chicago, Illinois 60604.
Such deliveries are only accepted during the Regional Office normal
hours of operation, and special arrangements should be made for
deliveries of boxed information. The Regional Office official hours of
business are Monday through Friday, 8:30 a.m. to 4:30 p.m., excluding
Federal holidays.
    Instructions: Direct your comments to Docket ID No. EPA-R05-OAR-
2009-0221. EPA's policy is that all comments received will be included
in the public docket without change and may be made available online at
http://www.regulations.gov, including any personal information
provided, unless the comment includes information claimed to be
Confidential Business Information (CBI) or other information whose
disclosure is restricted by statute. Do not submit information that you
consider to be CBI or otherwise protected through http://
www.regulations.gov or e-mail. The http://www.regulations.gov Web site
is an ``anonymous access'' system, which means EPA will not know your
identity or contact information unless you provide it in the body of
your comment. If you send an e-mail comment directly to EPA without
going through http://www.regulations.gov, your e-mail address will be
automatically captured and included as part of the comment that is
placed in the public docket and made available on the Internet. If you
submit an electronic comment, EPA recommends that you include your name
and other contact information in the body of your comment and with any
disk or CD-ROM you submit. If EPA cannot read your comment due to
technical difficulties and cannot contact you for clarification, EPA
may not be able to consider your comment. Electronic files should avoid
the use of special characters, any form of encryption, and be free of
any defects or viruses. For additional instructions on submitting
comments, go to Section I of this document, ``What Should I Consider as
I Prepare My Comments for EPA?''
    Docket: All documents in the docket are listed in the http://
www.regulations.gov index. Although listed in the index, some
information is not publicly available, e.g., CBI or other information
whose disclosure is restricted by statute. Certain other material, such
as copyrighted material, will be publicly available only in hard copy.
Publicly available docket materials are available either electronically
in http://www.regulations.gov or in hard copy at the Environmental
Protection Agency, Region 5, Air and Radiation Division, 77 West
Jackson Boulevard, Chicago, Illinois 60604. This facility is open from
8:30 a.m. to 4:30 p.m., Monday through Friday, excluding Federal
holidays. We recommend that you telephone Kathleen D'Agostino,
Environmental Engineer, at<PHONE_NUMBER> before visiting the Region 5
office.

FOR FURTHER INFORMATION CONTACT: Kathleen D'Agostino, Environmental
Engineer, Criteria Pollutant Section, Air Programs Branch (AR-18J),
U.S. Environmental Protection Agency, Region 5, 77 West Jackson
Boulevard, Chicago, Illinois 60604,<PHONE_NUMBER>,
<EMAIL_ADDRESS>
SUPPLEMENTARY INFORMATION: Throughout this document whenever ``we,''
``us,'' or ``our'' is used, we mean EPA. This supplementary information
section is arranged as follows:

Table of Contents

I. What Should I Consider as I Prepare My Comments for EPA?
II. What Action Is EPA Proposing To Take?
III. What Is the Background for These Actions?
    A. What Is the General Background Information?
    B. What Are the Impacts of the December 22, 2006, and June 8,
2007, United States Court of Appeals Decisions Regarding EPA's Phase
1 Implementation Rule?
IV. What Are the Criteria for Redesignation?
V. What Is the Effect of These Actions?
VI. What Is EPA's Analysis of the Request?
    A. Attainment Determination and Redesignation
    B. Adequacy of Ohio's MVEBs
    C. 2002 Base Year Emissions Inventory
    D. 15% ROP Plan
    E. Section 182(f) NOX Exemption
VII. What Action Is EPA Taking?
VIII. Statutory and Executive Order Reviews

I. What Should I Consider as I Prepare My Comments for EPA?

    When submitting comments, remember to:
    1. Identify the rulemaking by docket number and other identifying
information (subject heading, Federal Register date and page number).
    2. Follow directions--EPA may ask you to respond to specific
questions or organize comments by referencing a Code of Federal
Regulations (CFR) part or section number.
    3. Explain why you agree or disagree; suggest alternatives and
substitute language for your requested changes.
    4. Describe any assumptions and provide any technical information
and/or data that you used.
    5. If you estimate potential costs or burdens, explain how you
arrived at your estimate in sufficient detail to allow for it to be
reproduced.
    6. Provide specific examples to illustrate your concerns, and
suggest alternatives.
    7. Explain your views as clearly as possible, avoiding the use of
profanity or personal threats.
    8. Make sure to submit your comments by the comment period deadline
identified.

II. What Action Is EPA Proposing To Take?

    EPA is proposing to take several related actions. EPA is proposing
to make a determination that the Cleveland-Akron-Lorain nonattainment
area has attained the 8-hour ozone standard and that this area has met
the requirements for redesignation under section 107(d)(3)(E) of the
CAA. EPA is thus proposing to approve Ohio's request to change the
legal designation of the Cleveland-Akron-Lorain area from nonattainment
to attainment for the 8-hour ozone NAAQS. EPA is also proposing to
approve Ohio's maintenance plan SIP revision for Cleveland-Akron-Lorain
(such approval being one of the CAA criteria for redesignation to
attainment status). The maintenance plan is designed to keep the
Cleveland-Akron-Lorain area in attainment of the ozone NAAQS through
2020. EPA is proposing to approve the 2002 base year emissions
inventory for the Cleveland-Akron-Lorain area as meeting the
requirements of section 182(a)(1) of the CAA. EPA is proposing to
approve a waiver from the requirement for NOX reasonably
available control technology (RACT) rules in the Cleveland-Akron-Lorain
area. EPA is also proposing to approve

Ohio's 15% ROP plan as meeting the requirements of section 182(b)(1) of
the CAA for the 1-hour ozone standard. Additionally, if EPA's proposal
to determine that the area has attained the 1997 8-hour NAAQS is
finalized, pursuant to the provisions of 40 CFR 51.918, the requirement
to submit certain planning SIPs related to attainment (the RACM
requirement of section 172(c)(1) of the CAA, the RFP and attainment
demonstration requirements of sections 172(c)(2) and (6) and 182(b)(1)
of the CAA, and the requirement for contingency measures of section
172(c)(9) of the CAA) are not applicable to the area as long as it
continues to attain the NAAQS. (These requirements would cease to apply
upon redesignation.) Finally, EPA is proposing to approve the newly
established 2012 and 2020 MVEBs for the Cleveland-Akron-Lorain area.
The adequacy comment period for the MVEBs began on February 18, 2009,
with EPA's posting of the availability of the submittal on EPA's
Adequacy Web site (at http://www.epa.gov/otaq/stateresources/transconf/
adequacy.htm). The adequacy comment period for these MVEBs ended on
March 20, 2009. EPA did not receive any requests for this submittal, or
adverse comments on this submittal during the adequacy comment period.
In a letter dated March 20, 2009, EPA informed Ohio EPA that we had
found the 2012 and 2020 MVEBs to be adequate for use in transportation
conformity analyses. Please see section VII.B. of this rulemaking,
``Adequacy of Ohio's MVEBs,'' for further explanation on this process.
Therefore, we find adequate, and are proposing to approve, the State's
2012 and 2020 MVEBs for transportation conformity purposes.

III. What Is the Background for These Actions?

A. What Is the General Background Information?

    Ground-level ozone is not emitted directly by sources. Rather,
emissions of NOX and volatile organic compounds (VOCs) react
in the presence of sunlight to form ground-level ozone. NOX
and VOCs are referred to as precursors of ozone.
    The CAA establishes a process for air quality management through
the NAAQS. Before promulgation of the 8-hour standard, the ozone NAAQS
was based on a 1-hour standard. On November 6, 1991 (56 FR 56693 and
56813), the Cleveland-Akron-Lorain area was designated as a moderate
nonattainment area under the 1-hour ozone NAAQS. The area was
subsequently redesignated to attainment of the 1-hour standard on May
7, 1996 (61 FR 20454). At the time EPA revoked the 1-hour ozone NAAQS,
on June 15, 2005, the Cleveland-Akron-Lorain area was designated as
attainment under the 1-hour ozone NAAQS.
    On July 18, 1997 (62 FR 38856), EPA promulgated an 8-hour ozone
standard of 0.08 parts per million parts (ppm). On April 30, 2004 (69
FR 23857), EPA published a final rule designating and classifying areas
under the 8-hour ozone NAAQS. These designations and classifications
became effective June 15, 2004. EPA designated as nonattainment any
area that was violating the 8-hour ozone NAAQS based on the three most
recent years of air quality data, 2001-2003.
    The CAA contains two sets of provisions, subpart 1 and subpart 2,
that address planning and control requirements for nonattainment areas.
(Both are found in Title I, part D, 42 U.S.C. 7501-7509a and 7511-
7511f, respectively.) Subpart 1 contains general requirements for
nonattainment areas for any pollutant, including ozone, governed by a
NAAQS. Subpart 2 provides more specific requirements for ozone
nonattainment areas.
    Under EPA's implementation rule for the 1997 8-hour ozone standard,
(69 FR 23951 (April 30, 2004)), an area was classified under subpart 2
based on its 8-hour ozone design value (i.e. the three-year average
annual fourth-highest daily maximum 8-hour average ozone
concentration), if it had a 1-hour design value at the time of
designation at or above 0.121 ppm (the lowest 1-hour design value in
Table 1 of subpart 2) (69 FR 23954). All other areas were covered under
subpart 1, based upon their 8-hour design values (69 FR 23958). The
Cleveland-Akron-Lorain area was designated as a subpart 2, 8-hour ozone
moderate nonattainment area by EPA on April 30, 2004 (69 FR 23857,
23926-23927) based on air quality monitoring data from 2001-2003 (69 FR
23860).
    40 CFR 50.10 and 40 CFR part 50, Appendix I provide that the 8-hour
ozone standard is attained when the three-year average of the annual
fourth-highest daily maximum 8-hour average ozone concentration is less
than or equal to 0.08 ppm, when rounded. The data completeness
requirement is met when the average percent of days with valid ambient
monitoring data is greater than 90 percent, and no single year has less
than 75 percent data completeness. See 40 CFR part 50, Appendix I,
2.3(d).
    On March 17, 2009, Ohio EPA requested that EPA redesignate the
Cleveland-Akron-Lorain area to attainment for the 8-hour ozone
standard. The State supplemented the submittal on April 24, 2009. The
redesignation request included three years of complete, quality-assured
data for the period of 2006 through 2008, indicating the 8-hour NAAQS
for ozone, as promulgated in 1997, had been attained for the Cleveland-
Akron-Lorain area. Under the CAA, nonattainment areas may be
redesignated to attainment if sufficient complete, quality-assured data
are available for the Administrator to determine that the area has
attained the standard, and the area meets the other CAA redesignation
requirements in section 107(d)(3)(E).
    On March 27, 2008 (73 FR 16436), EPA promulgated a revised 8-hour
ozone standard of 0.075. EPA has not yet promulgated area designations
for this standard. While both the 1997 and 2008 8-hour ozone standards
are currently in place, the actions addressed in this proposed
rulemaking relate only to the 1997 8-hour ozone standard.

B. What Are the Impacts of the December 22, 2006, and June 8, 2007,
United States Court of Appeals Decisions Regarding EPA's Phase 1
Implementation Rule?

1. Summary of Court Decision
    On December 22, 2006, in South Coast Air Quality Management Dist.
v. EPA, the U.S. Court of Appeals for the District of Columbia Circuit
vacated EPA's Phase 1 Implementation Rule for the 8-hour Ozone Standard
(69 FR 23951, April 30, 2004). 472 F.3d 882 (D.C. Cir. 2006). On June
8, 2007, in response to several petitions for rehearing, the D.C.
Circuit Court clarified that the Phase 1 Rule was vacated only with
regard to those parts of the rule that had been successfully
challenged. Id., Docket No. 04 1201. Therefore, several provisions of
the Phase 1 Rule remain effective: Provisions related to
classifications for areas currently classified under subpart 2 of Title
I, part D, of the CAA as 8-hour nonattainment areas; the 8-hour
attainment dates; and the timing for emissions reductions needed for
attainment of the 8-hour ozone NAAQS. The June 8, 2007, decision also
left intact the Court's rejection of EPA's reasons for implementing the
8-hour standard in certain nonattainment areas under subpart 1 in lieu
of subpart 2. By limiting the vacatur, the Court let stand EPA's
revocation of the 1-hour standard and those anti-backsliding provisions
of the Phase 1 Rule that had not been successfully challenged. The June
8, 2007, decision reaffirmed the December 22, 2006, decision that EPA
had improperly failed to retain four

measures required for 1-hour nonattainment areas under the anti-
backsliding provisions of the regulations: (1) Nonattainment area New
Source Review (NSR) requirements based on an area's 1-hour
nonattainment classification; (2) Section 185 penalty fees for 1-hour
severe or extreme nonattainment areas; (3) measures to be implemented
pursuant to section 172(c)(9) or 182(c)(9) of the Act, on the
contingency of an area not making reasonable further progress toward
attainment of the 1-hour NAAQS, or for failure to attain that NAAQS;
and (4) certain transportation conformity requirements for certain
types of Federal actions. The June 8, 2007, decision clarified that the
Court's reference to conformity requirements was limited to requiring
the continued use of 1-hour motor vehicle emissions budgets until 8-
hour budgets were available for 8-hour conformity determinations.
    This section sets forth EPA's views on the potential effect of the
Court's rulings on this proposed redesignation action. For the reasons
set forth below, EPA does not believe that the Court's rulings alter
any requirements relevant to this redesignation action so as to
preclude redesignation or prevent EPA from proposing or ultimately
finalizing this redesignation. EPA believes that the Court's December
22, 2006, and June 8, 2007, decisions impose no impediment to moving
forward with redesignation of this area to attainment, because even in
light of the Court's decisions, redesignation is appropriate under the
relevant redesignation provisions of the CAA and longstanding policies
regarding redesignation requests.
2. Requirements Under the 8-Hour Standard
    With respect to the 8-hour standard, the Cleveland-Akron-Lorain
area is classified under subpart 2. The June 8, 2007, opinion clarifies
that the Court did not vacate the Phase 1 Rule's provisions with
respect to classifications for areas under subpart 2. The Court's
decision therefore upholds EPA's classifications for those areas
classified under subpart 2 for the 8-hour ozone standard.
3. Requirements Under the 1-Hour Standard
    With respect to the 1-hour standard requirements, the Cleveland-
Akron-Lorain area was an Attainment area subject to a CAA section 175A
maintenance plan under the 1-hour standard. The Court's decisions do
not impact redesignation requests for these types of areas, except to
the extent that the Court, in its June 8, 2007, decision, clarified
that for those areas with 1-hour motor vehicle emissions budgets in
their maintenance plans, anti-backsliding requires that those 1-hour
budgets must be used for 8-hour conformity determinations until
replaced by 8-hour budgets. To meet this requirement, conformity
determinations in such areas must comply with the applicable
requirements of EPA's conformity regulations at 40 CFR part 93.
    With respect to the three other anti-backsliding provisions for the
1-hour standard that the Court found were not properly retained, the
Cleveland-Akron-Lorain area is an attainment area subject to a
maintenance plan for the 1-hour standard, and the NSR, contingency
measures (pursuant to section 172(c)(9) or 182(c)(9)), and fee
provision requirements no longer apply to an area that has been
redesignated to attainment of the 1-hour standard.
    Thus the decision in South Coast should not alter requirements that
would preclude EPA from proposing or finalizing the redesignation of
this area.

IV. What Are the Criteria for Redesignation?

    The CAA provides the requirements for redesignating a nonattainment
area to attainment. Specifically, section 107(d)(3)(E) allows for
redesignation provided that: (1) The Administrator determines that the
area has attained the applicable NAAQS; (2) the Administrator has fully
approved the applicable implementation plan for the area under section
110(k); (3) the Administrator determines that the improvement in air
quality is due to permanent and enforceable reductions in emissions
resulting from implementation of the applicable SIP and applicable
Federal air pollutant control regulations and other permanent and
enforceable reductions; (4) the Administrator has fully approved a
maintenance plan for the area as meeting the requirements of section
175A; and, (5) the State containing such area has met all requirements
applicable to the area under section 110 and part D.
    EPA provided guidance on redesignation in the General Preamble for
the Implementation of Title I of the CAA Amendments of 1990 on April
16, 1992 (57 FR 13498), and supplemented this guidance on April 28,
1992 (57 FR 18070). EPA has provided further guidance on processing
redesignation requests in the following documents:

    ``Ozone and Carbon Monoxide Design Value Calculations,''
Memorandum from William G. Laxton, Director Technical Support
Division, June 18, 1990;
    ``Maintenance Plans for Redesignation of Ozone and Carbon
Monoxide Nonattainment Areas,'' Memorandum from G. T. Helms, Chief,
Ozone/Carbon Monoxide Programs Branch, April 30, 1992;
    ``Contingency Measures for Ozone and Carbon Monoxide (CO)
Redesignations,'' Memorandum from G. T. Helms, Chief, Ozone/Carbon
Monoxide Programs Branch, June 1, 1992;
    ``Procedures for Processing Requests to Redesignate Areas to
Attainment,'' Memorandum from John Calcagni, Director, Air Quality
Management Division, September 4, 1992;
    ``State Implementation Plan (SIP) Actions Submitted in Response
to Clean Air Act (ACT) Deadlines,'' Memorandum from John Calcagni,
Director, Air Quality Management Division, October 28, 1992;
    ``Technical Support Documents (TSD's) for Redesignation Ozone
and Carbon Monoxide (CO) Nonattainment Areas,'' Memorandum from G.
T. Helms, Chief, Ozone/Carbon Monoxide Programs Branch, August 17,
1993;
    ``State Implementation Plan (SIP) Requirements for Areas
Submitting Requests for Redesignation to Attainment of the Ozone and
Carbon Monoxide (CO) National Ambient Air Quality Standards (NAAQS)
On or After November 15, 1992,'' Memorandum from Michael H. Shapiro,
Acting Assistant Administrator for Air and Radiation, September 17,
1993;
    ``Use of Actual Emissions in Maintenance Demonstrations for
Ozone and CO Nonattainment Areas,'' Memorandum from D. Kent Berry,
Acting Director, Air Quality Management Division, to Air Division
Directors, Regions 1-10, November 30, 1993.
    ``Part D New Source Review (part D NSR) Requirements for Areas
Requesting Redesignation to Attainment,'' Memorandum from Mary D.
Nichols, Assistant Administrator for Air and Radiation, October 14,
1994; and
    ``Reasonable Further Progress, Attainment Demonstration, and
Related Requirements for Ozone Nonattainment Areas Meeting the Ozone
National Ambient Air Quality Standard,'' Memorandum from John S.
Seitz, Director, Office of Air Quality Planning and Standards, May
10, 1995.

V. What Is the Effect of These Actions?

    Approval of the redesignation request would change the official
designation of the area for the 8-hour ozone NAAQS found at 40 CFR part
81. It would also incorporate into the Ohio SIP a plan for maintaining
the 8-hour ozone NAAQS through 2020. The maintenance plan includes
contingency measures to remedy future violations of the 8-hour NAAQS.
It also establishes MVEBs of 46.64 and 31.48 tons per day (tpd) VOC and
95.89 and 42.75 tpd NOX for the years 2012 and 2020,
respectively.

VI. What Is EPA's Analysis of the Request?

A. Attainment Determination and Redesignation

    EPA is proposing to make a determination that the Cleveland-Akron-
Lorain area has attained the 8-hour ozone standard and that the area
has met all other applicable section 107(d)(3)(E) redesignation
criteria. The basis for EPA's determination is as follows:
1. The Area Has Attained the 8-Hour Ozone NAAQS (Section
107(d)(3)(E)(i))
    EPA is proposing to make a determination that the Cleveland-Akron-
Lorain area has attained the 8-hour ozone NAAQS. For ozone, an area may
be considered to be attaining the 8-hour ozone NAAQS if there are no
violations, as determined in accordance with 40 CFR 50.10 and part 50,
Appendix I, based on three complete, consecutive calendar years of
quality-assured air quality monitoring data. To attain this standard,
the three-year average of the fourth-highest daily maximum 8-hour
average ozone concentrations measured at each monitor within an area
over each year must not exceed 0.08 ppm. Based on the rounding
convention described in 40 CFR part 50, Appendix I, the standard is
attained if the design value is 0.084 ppm or below. The data must be
collected and quality-assured in accordance with 40 CFR part 58, and
recorded in the Aerometric Information Retrieval System (AIRS). The
monitors generally should have remained at the same location for the
duration of the monitoring period required for demonstrating
attainment.
    Ohio EPA submitted ozone monitoring data for the 2006 to 2008 ozone
seasons. Ohio EPA quality-assured the ambient monitoring data in
accordance with 40 CFR 58.10, and recorded it in the AIRS database,
thus making the data publicly available. The data meet the completeness
criteria in 40 CFR Part 50, Appendix I, which requires a minimum
completeness of 75 percent annually and 90 percent over each three year
period. Monitoring data is presented in Table 1 below.

   Table 1--Annual 4th High Daily Maximum 8-Hour Ozone Concentration and Three Year Averages of 4th High Daily
                                       Maximum 8-Hour Ozone Concentrations
----------------------------------------------------------------------------------------------------------------
                                                                                2006-2008
               County                         Monitor          2006  4th    2007  4th    2008  4th     average
                                                              high  (ppm)  high  (ppm)  high  (ppm)     (ppm)
----------------------------------------------------------------------------------------------------------------
Ashtabula...........................  Conneaut 39-007-1001..        0.086        0.092        0.075        0.084
Cuyahoga............................  Cleveland 39-035-0034.        0.074        0.080        0.081        0.078
                                      Berea 39-035-0064.....        0.068        0.083        0.072        0.074
                                      Mayfield 39-035-5002..        0.081        0.080        0.083        0.081
Geauga..............................  Cleveland 39-055-0004.        0.070        0.068        0.082        0.073
Lake................................  Eastlake 39-085-0003..        0.083        0.074        0.078        0.078
                                      Painsville 39-085-3002        0.075        0.079        0.076        0.076
Lorain..............................  Sheffield 39-093-0018.        0.069        0.078        0.075        0.074
Medina..............................  Cleveland 39-103-0003.        0.073        0.069        0.075        0.072
Portage.............................  Akron 39-133-1001.....        0.070        0.084        0.069        0.074
Summit..............................  Akron 39-153-0020.....        0.077        0.090        0.080        0.082
----------------------------------------------------------------------------------------------------------------

    In addition, as discussed below with respect to the maintenance
plan, Ohio EPA has committed to continue to operate an EPA-approved
monitoring network as necessary to demonstrate ongoing compliance with
the NAAQS. Ohio EPA commits to continue monitoring ozone at the sites
indicated in Table 1. Ohio EPA also commits to consult with EPA prior
to making changes to the existing monitoring network, should changes
become necessary in the future. Ohio EPA remains obligated to continue
to quality assure monitoring data in accordance with 40 CFR part 58 and
enter all data into the Air Quality System in accordance with Federal
guidelines. In summary, EPA believes that the data submitted by Ohio
provide an adequate demonstration that the Cleveland-Akron-Lorain area
has attained the 8-hour ozone NAAQS, and currently available data show
that the area continues to attain the standard. Should the area violate
the standard before the redesignation is finalized, EPA will not go
forward with the redesignation.
2. The Area Has Met All Applicable Requirements Under Section 110 and
Part D; and the Area Has a Fully Approved SIP Under Section 110(k)
(Sections 107(d)(3)(E)(v) and 107(d)(3)(E)(ii))
    We have determined that Ohio has met all currently applicable SIP
requirements for purposes of redesignation for the Cleveland-Akron-
Lorain area under section 110 of the CAA (general SIP requirements). We
have also determined that the Ohio SIP meets all SIP requirements
currently applicable for purposes of redesignation under part D of
Title I of the CAA (requirements specific to subpart 1 nonattainment
areas), in accordance with section 107(d)(3)(E)(v). In addition, with
the exception of the base year emissions inventory, certain VOC RACT
regulations, and the section 182(f) NOX exemption, we have
determined that the Ohio SIP is fully approved with respect to all
applicable requirements for purposes of redesignation, in accordance
with section 107(d)(3)(E)(ii). As discussed below, in this action EPA
is proposing to approve Ohio's 2002 base year emissions inventory and
NOX RACT waiver. In a separate action, EPA is proposing to
approve Ohio's VOC RACT submittal.
    In making these determinations, we have ascertained what SIP
requirements are applicable to the area for purposes of redesignation,
and have determined that the portions of the SIP meeting these
requirements are fully approved under section 110(k) of the CAA. As
discussed more fully below, SIPs must be fully approved only with
respect to currently applicable requirements of the CAA.
    The September 4, 1992, Calcagni memorandum (see ``Procedures for
Processing Requests to Redesignate Areas to Attainment,'' Memorandum
from John Calcagni, Director, Air Quality Management Division,
September 4, 1992) describes EPA's interpretation of section
107(d)(3)(E) of the CAA. Under this interpretation, a State and the
area it wishes to redesignate must meet the relevant CAA requirements
that are due prior to the State's submittal of a complete redesignation
request for the area. See

also the September 17, 1993, Michael Shapiro memorandum and 60 FR
12459, 12465-66 (March 7, 1995) (redesignation of Detroit-Ann Arbor,
Michigan to attainment of the 1-hour ozone NAAQS). Applicable
requirements of the CAA that come due subsequent to the State's
submittal of a complete request remain applicable until a redesignation
to attainment is approved, but are not required as a prerequisite to
redesignation. See section 175A(c) of the CAA. Sierra Club v. EPA, 375
F.3d 537 (7th Cir. 2004). See also 68 FR 25424, 25427 (May 12, 2003)
(redesignation of the St. Louis/East St. Louis area to attainment of
the 1-hour ozone NAAQS).
    Since EPA is proposing here to determine that the area has attained
the 1997 8-hour ozone standard, under 40 CFR 51.918, if that
determination is finalized, the requirements to submit certain planning
SIPs related to attainment, including attainment demonstration
requirements (the RACM requirement of section 172(c)(1) of the CAA, the
RFP and attainment demonstration requirements of sections 172(c)(2) and
(6) and 182(b)(1) of the CAA, and the requirement for contingency
measures of section 172(c)(9) of the CAA) would not be applicable to
the area as long as it continues to attain the NAAQS and would cease to
apply upon redesignation. In addition, in the context of
redesignations, EPA has interpreted requirements related to attainment
as not applicable for purposes of redesignation. For example, in the
General Preamble EPA stated that:

[t]he section 172(c)(9) requirements are directed at ensuring RFP
and attainment by the applicable date. These requirements no longer
apply when an area has attained the standard and is eligible for
redesignation. Furthermore, section 175A for maintenance plans * * *
provides specific requirements for contingency measures that
effectively supersede the requirements of section 172(c)(9) for
these areas. ``General Preamble for the Interpretation of Title I of
the Clean Air Act Amendments of 1990,'' (General Preamble) 57 FR
13498, 13564 (April 16, 1992).

See also Calcagni memorandum at 6 (``The requirements for reasonable
further progress and other measures needed for attainment will not
apply for redesignations because they only have meaning for areas not
attaining the standard.'').
a. The Cleveland-Akron-Lorain Area Has Met All Applicable Requirements
Under Section 110 and Part D of the CAA for Purposes of Redesignation
i. Section 110 General SIP Requirements
    Section 110(a) of Title I of the CAA contains the general
requirements for a SIP. Section 110(a)(2) provides that the
implementation plan submitted by a State must have been adopted by the
State after reasonable public notice and hearing, and that, among other
things, it includes enforceable emission limitations and other control
measures, means or techniques necessary to meet the requirements of the
CAA; provides for establishment and operation of appropriate devices,
methods, systems and procedures necessary to monitor ambient air
quality; provides for implementation of a source permit program to
regulate the modification and construction of any stationary source
within the areas covered by the plan; includes provisions for the
implementation of part C, Prevention of Significant Deterioration (PSD)
and part D, NSR permit programs; includes criteria for stationary
source emission control measures, monitoring, and reporting; includes
provisions for air quality modeling; and provides for public and local
agency participation in planning and emission control rule development.
    Section 110(a)(2)(D) of the CAA requires that SIPs contain measures
to prevent sources in a State from significantly contributing to air
quality problems in another State. To implement this provision, EPA has
required certain States to establish programs to address transport of
air pollutants (NOX SIP Call \1\ and Clean Air Interstate
Rule (CAIR) (70 FR 25162, May 12 2005)). However, the section
110(a)(2)(D) requirements for a State are not linked with a particular
nonattainment area's designation and classification. EPA believes that
the requirements linked with a particular nonattainment area's
designation and classification are the relevant measures to evaluate in
reviewing a redesignation request. The transport SIP submittal
requirements, where applicable, continue to apply to a State regardless
of the designation of any one particular area in the State. Thus, we
believe that these requirements should not be construed to be
applicable requirements for purposes of redesignation.
---------------------------------------------------------------------------

    \1\ On October 27, 1998 (63 FR 57356), EPA issued a
NOX SIP call requiring the District of Columbia and 22
States to reduce emissions of NOX in order to reduce the
transport of ozone and ozone precursors. In compliance with EPA's
NOX SIP call, Ohio EPA has developed rules governing the
control of NOX emissions from Electric Generating Units
(EGUs), major non-EGU industrial boilers, and major cement kilns.
EPA approved Ohio's rules as fulfilling Phase I of the
NOX SIP Call on August 5, 2003 (68 FR 46089) and June 27,
2005 (70 FR 36845). EPA approved Ohio's rules as meeting Phase II of
the NOX SIP call on February 4, 2008 (73 FR 6427).
---------------------------------------------------------------------------

    Further, we believe that the other section 110 elements described
above that are not connected with nonattainment plan submissions and
not linked with an area's attainment status are also not applicable
requirements for purposes of redesignation. A State remains subject to
these requirements after an area is redesignated to attainment. We
conclude that only the section 110 and part D requirements which are
linked with a particular area's designation and classification are the
relevant measures which we may consider in evaluating a redesignation
request. This approach is consistent with EPA's existing policy on
applicability of conformity and oxygenated fuels requirements for
redesignation purposes, as well as with section 184 ozone transport
requirements. See Reading, Pennsylvania, proposed and final rulemakings
(61 FR 53174-53176, October 10, 1996), (62 FR 24826, May 7, 1997);
Cleveland-Akron-Lorain, Ohio, final rulemaking (61 FR 20458, May 7,
1996); and Tampa, Florida, final rulemaking (60 FR 62748, December 7,
1995). See also the discussion on this issue in the Cincinnati, Ohio
ozone redesignation (65 FR 37890, June 19, 2000), and in the
Pittsburgh, Pennsylvania ozone redesignation (66 FR 50399, October 19,
2001).
    We have reviewed Ohio's SIP and have concluded that it meets the
general SIP requirements under section 110 of the CAA, to the extent
those requirements are applicable for purposes of redesignation. EPA
has previously approved provisions of the Ohio SIP addressing section
110 elements under the 1-hour ozone standard (40 CFR 52.1870). Further,
in submittals dated December 5, 2007, and September 19, 2008, Ohio
confirmed that the State continues to meet the section 110 requirements
for the 8-hour ozone standard. EPA has not yet taken rulemaking action
on these submittals; however, such approval is not necessary for
redesignation.
ii. Part D Requirements
    EPA has determined that, with the approval of the base year
emissions inventory and the NOX waiver, discussed in section
VII.C. of this rulemaking, and the VOC RACT submittal, discussed below
under the heading ``Subpart 2 Section 182(a) and (b) Requirements,''
the Ohio SIP will

meet the SIP requirements applicable for purposes of redesignation
under part D of the CAA for the Cleveland-Akron-Lorain area. Under part
D of the CAA, an area's classification determines the requirements to
which it will be subject. Subpart 1 of part D, found in sections 172-
176 of the CAA, sets forth the basic nonattainment requirements
applicable to all nonattainment areas. Subpart 2 of part D, which
includes section 182 of the CAA, establishes additional specific
requirements depending on the area's nonattainment classification.
    The Cleveland-Akron-Lorain area was classified as a moderate area
under subpart 2; therefore the State must meet both the applicable
requirements of subpart 1 and subpart 2 of part D. The applicable
subpart 1 requirements are contained in sections 172(c)(1)-(9) and in
section 176. The subpart 2 requirements applicable to the Cleveland-
Akron-Lorain area are contained in sections 182(a) and (b) (marginal
and moderate nonattainment area requirements).
    Subpart 1 Section 172 Requirements.
    For purposes of evaluating this redesignation request, the
applicable section 172 SIP requirements for the Cleveland-Akron-Lorain
area are contained in sections 172(c)(1)-(9). A thorough discussion of
the requirements contained in section 172 can be found in the General
Preamble for Implementation of Title I (57 FR 13498, April 16, 1992).
    Section 172(c)(1) requires the plans for all nonattainment areas to
provide for the implementation of all RACM as expeditiously as
practicable. The EPA interprets this requirement to impose a duty on
all nonattainment areas to consider all available control measures and
to adopt and implement such measures as are reasonably available for
implementation in the area as components of the areas attainment
demonstration. Because attainment has been reached, no additional
measures are needed to provide for attainment.
    The RFP requirement under section 172(c)(2) is defined as progress
that must be made toward attainment. This requirement is not relevant
because the Cleveland-Akron-Lorain area has demonstrated monitored
attainment of the ozone NAAQS (General Preamble, 57 FR 13564). In
addition, because the Cleveland-Akron-Lorain area has attained the
ozone NAAQS and is no longer subject to an RFP requirement, the section
172(c)(9) contingency measures are not applicable.
    Section 172(c)(3) requires submission and approval of a
comprehensive, accurate and current inventory of actual emissions. This
requirement was superseded by the inventory requirement in section
182(a)(1).
    Section 172(c)(4) requires the identification and quantification of
allowable emissions for major new and modified stationary sources to be
allowed in an area, and section 172(c)(5) requires source permits for
the construction and operation of new and modified major stationary
sources anywhere in the nonattainment area. EPA has determined that,
since PSD requirements will apply after redesignation, areas being
redesignated need not comply with the requirement that a NSR program be
approved prior to redesignation, provided that the area demonstrates
maintenance of the NAAQS without part D NSR. A more detailed rationale
for this view is described in a memorandum from Mary Nichols, Assistant
Administrator for Air and Radiation, dated October 14, 1994, entitled,
``Part D New Source Review Requirements for Areas Requesting
Redesignation to Attainment.'' Ohio has demonstrated that the
Cleveland-Akron-Lorain area will be able to maintain the standard
without part D NSR in effect; therefore, EPA concludes that the State
need not have a fully approved part D NSR program prior to approval of
the redesignation request. The State's PSD program will become
effective in the Cleveland-Akron-Lorain area upon redesignation to
attainment. See rulemakings for Detroit, Michigan (60 FR 12467-12468,
March 7, 1995); Cleveland-Akron-Lorain, Ohio (61 FR 20458, 20469-20470,
May 7, 1996); Louisville, Kentucky (66 FR 53665, October 23, 2001); and
Grand Rapids, Michigan (61 FR 31834-31837, June 21, 1996).
    Section 172(c)(6) requires the SIP to contain control measures
necessary to provide for attainment of the standard. Because attainment
has been reached, no additional measures are needed to provide for
attainment.
    Section 172(c)(7) requires the SIP to meet the applicable
provisions of section 110(a)(2). As noted above, we believe the Ohio
SIP meets the requirements of section 110(a)(2) for purposes of
redesignation.
    Subpart 1 Section 176 Conformity Requirements.
    Section 176(c) of the CAA requires States to establish criteria and
procedures to ensure that Federally-supported or funded activities,
including highway projects, conform to the air quality planning goals
in the applicable SIPs. The requirement to determine conformity applies
to transportation plans, programs and projects developed, funded or
approved under Title 23 of the U.S. Code and the Federal Transit Act
(transportation conformity) as well as to all other Federally-supported
or funded projects (general conformity). State conformity revisions
must be consistent with Federal conformity regulations relating to
consultation, enforcement, and enforceability, which EPA promulgated
pursuant to CAA requirements.
    EPA believes that it is reasonable to interpret the conformity SIP
requirements as not applying for purposes of evaluating the
redesignation request under section 107(d) for two reasons. First, the
requirement to submit SIP revisions to comply with the conformity
provisions of the CAA continues to apply to areas after redesignation
to attainment since such areas would be subject to a section 175A
maintenance plan. Second, EPA's Federal conformity rules require the
performance of conformity analyses in the absence of Federally-approved
State rules. Therefore, because areas are subject to the conformity
requirements regardless of whether they are redesignated to attainment
and, because they must implement conformity under Federal rules if
State rules are not yet approved, EPA believes it is reasonable to view
these requirements as not applying for purposes of evaluating a
redesignation request. See Wall v. EPA, 265 F.3d 426 (6th Cir. 2001),
upholding this interpretation. See also 60 FR 62748, 62749-62750 (Dec.
7, 1995) (Tampa, Florida).
    EPA approved Ohio's general and transportation conformity SIPs on
March 11, 1996 (61 FR 9646), and May 30, 2000 (65 FR 34395),
respectively. Ohio has submitted onroad motor vehicle budgets for the
Cleveland-Akron-Lorain area of 46.64 and 31.48 tpd VOC and 95.89 and
42.75 tpd NOX for the years 2012 and 2020, respectively. The
area must use the MVEBs from the maintenance plan in any conformity
determination that is effective on or after the effective date of the
maintenance plan approval.
    Subpart 2 Section 182(a) and (b) Requirements.
    As set forth in the September 4, 1992, and September 17, 1993, EPA
guidance memoranda referenced in section IV of this action, ``What Are
the Criteria for Redesignation?,'' only those requirements which came
due prior to Ohio's submittal of a request to designate the Cleveland-
Akron-Lorain area must be fully approved into the SIP before or at the
time EPA approves the redesignation of the area to attainment. These
requirements are discussed below.
    Base Year Emissions Inventory. Section 182(a)(1) requires the

submission of a base year emissions inventory. As part of Ohio's
redesignation request for the Cleveland-Akron-Lorain area, the State
submitted a 2002 base year emissions inventory. As discussed below, EPA
is proposing to approve the 2002 base year inventory that Ohio
submitted with the redesignation request as meeting the section
182(a)(1) emissions inventory requirement.
    Emissions Statements. EPA approved Ohio's emission statement SIP,
as required by section 182(a)(3)(B), on October 13, 1994 (59 FR 51863).
    Reasonable Further Progress and Attainment Demonstration. On June
15, 2007, and February 22, 2008, Ohio EPA submitted an attainment
demonstration and reasonable further progress plans for the Cleveland-
Akron-Lorain area as required by section 182(b)(1) of the CAA. In this
submittal, Ohio EPA requested that EPA act on the 15% ROP plan that was
originally submitted by Ohio to meet section 182(b)(1) requirements
under the 1-hour ozone standard. Because attainment has been reached,
section 182(b)(1) requirements are no longer considered to be
applicable as long as the area continues to attain the standard.
Nevertheless, as discussed below, EPA is proposing to approve Ohio's
15% ROP plan as meeting the requirements of section 182(b)(1) of the
CAA for the 1-hour ozone standard.
    VOC RACT Requirements. Section 182(b)(2) requires States with
moderate nonattainment areas to implement RACT under section 172(c)(1)
with respect to each of the following: (1) All sources covered by a
Control Technology Guideline (CTG) document issued between November 15,
1990, and the date of attainment; (2) all sources covered by a CTG
issued prior to November 15, 1990; and, (3) all other major non-CTG
stationary sources. As required under the 1-hour ozone standard, Ohio
submitted VOC RACT rules covering the second and third categories. The
EPA approved these VOC RACT rules on April 25, 1996 (61 FR 18255),
September 7, 1994 (59 FR 46182), and October 23, 1995 (60 FR 54308).
With respect to the first category, EPA issued CTGs for five source
categories in September 2006 and three additional source categories in
September 2007. Areas classified as moderate and above were required to
submit VOC RACT for the source categories covered by these CTGs, by
September 2007, and September 2008, respectively. Ohio submitted a SIP
revision to address these CTGs on March 23, 2009. On May 7, 2009 (74 FR
21295), EPA proposed to approve Ohio's RACT submittal. Full approval of
Ohio's RACT submittal is a prerequisite for approval of the
redesignation of the Cleveland-Akron-Lorain area to attainment.
    NOX RACT. Section 182(f) establishes NOX requirements
for ozone nonattainment areas. However, it provides that these
requirements do not apply to an area if the Administrator determines
that NOX reductions would not contribute to attainment. As
discussed in section VI.E. below, we are proposing such a determination
for the Cleveland-Akron-Lorain nonattainment area as requested by the
State of Ohio. If the NOX waiver is approved as a final
rule, the State of Ohio need have fully approved NOX control
measures under section 182(f) for the Cleveland-Akron-Lorain area to be
redesignated to attainment.
    Stage II Vapor Recovery. Section 182(b)(3) requires States to
submit Stage II rules no later than November 15, 1992. The EPA
partially approved and partially disapproved Ohio's SIP revision for
implementation of Stage II on October 20, 1994 (59 FR 52911). As stated
in that rulemaking action, with the exception of paragraph 3745-21-09
(DDD)(5), EPA considers Ohio's Stage II program to fully satisfy the
criteria set forth in the September 17, 1993, EPA guidance document for
such programs entitled ``Enforcement Guidance for Stage II Vehicle
Refueling Control Programs.'' Furthermore, the September 17, 1993,
guidance memorandum states that once onboard vapor recovery regulations
are promulgated, the requirement for Stage II regulations no longer
applies to moderate ozone nonattainment areas. The EPA promulgated
onboard vapor recovery rules in February 1994. Therefore, pursuant to
section 202(a)(6) of the CAA, Stage II regulations are no longer
required.
    Vehicle Inspection and Maintenance (I/M). The EPA's final I/M
regulations in 40 CFR part 85 require the States to submit a fully
adopted I/M program by November 15, 1993. EPA approved Ohio's enhanced
I/M program (E-Check), on April 4, 1995 (60 FR 16989) and January 6,
1997 (62 FR 646).
    Thus, as discussed above, with approval of the base year inventory,
the section 182(f) NOX exemption, and Ohio's VOC RACT
submittal, the Cleveland-Akron-Lorain area will satisfy the
requirements applicable for purposes of redesignation under section 110
and part D of the CAA.
    b. The Cleveland-Akron-Lorain Area Has a Fully Approved Applicable
SIP for Purposes of Redesignation Under Section 110(k) of the CAA.
    If EPA finalizes approvals of the base year emissions inventory,
Ohio's VOC RACT submittal, and the section 182(f) NOX
exemption, EPA will have fully approved the Ohio SIP for the Cleveland-
Akron-Lorain area under section 110(k) of the CAA for all requirements
applicable for purposes of redesignation. EPA may rely on prior SIP
approvals in approving a redesignation request (See page three of the
September 4, 1992, John Calcagni memorandum; Southwestern Pennsylvania
Growth Alliance v. Browner, 144 F.3d 984, 989-990 (6th Cir. 1998); Wall
v. EPA, 265 F.3d 426 (6th Cir. 2001)) plus any additional measures it
may approve in conjunction with a redesignation action. See 68 FR
25413, 25426 (May 12, 2003). Since the passage of the CAA of 1970, Ohio
has adopted and submitted, and EPA has fully approved, provisions
addressing the various required SIP elements applicable to the
Cleveland-Akron-Lorain area under the 1-hour ozone standard. In this
action, EPA is proposing to approve Ohio's 2002 base year emissions
inventory for the Cleveland-Akron-Lorain area as meeting the
requirement of section 182(a)(1) of the CAA. EPA is also proposing to
approve Ohio's NOX waiver for the Cleveland-Akron-Lorain
area. In a separate action, EPA is proposing to approve Ohio's VOC RACT
submission. No Cleveland-Akron-Lorain area SIP provisions are currently
disapproved, conditionally approved, or partially approved.
3. The Improvement in Air Quality Is Due to Permanent and Enforceable
Reductions in Emissions Resulting From Implementation of the SIP and
Applicable Federal Air Pollution Control Regulations and Other
Permanent and Enforceable Reductions (Section 107(d)(3)(E)(iii))
    EPA finds that Ohio has demonstrated that the observed air quality
improvement in the Cleveland-Akron-Lorain area is due to permanent and
enforceable reductions in emissions resulting from implementation of
the SIP, Federal measures, and other State-adopted measures.
    In making this demonstration, the State has calculated the change
in emissions between 2002 and 2006. Ohio used the 2002 nonattainment
area base year emissions inventory required under section 182(a)(1) of
the CAA as the nonattainment inventory for redesignation purposes. The
State developed an attainment inventory for 2006, one of the years the
Cleveland-Akron-Lorain area monitored attainment. The reduction in
emissions

and the corresponding improvement in air quality over this time period
can be attributed to a number of regulatory control measures that
Cleveland-Akron-Lorain and upwind areas have implemented in recent
years.
    a. Permanent and Enforceable Controls Implemented.
    The following is a discussion of permanent and enforceable measures
that have been implemented in the areas:
    i. VOC Controls. Ohio adopted rules to limit VOC emissions from
portable fuel containers and consumer and commercial products.
    ii. Automobile Inspection and Maintenance (I/M) program. Ohio
operates an enhanced automobile inspection and maintenance program in
the Cleveland-Akron-Lorain area.
    iii. Stationary Source NOX Rules. Ohio EPA developed rules
governing the control of NOX emissions from Electric
Generating Units (EGUs), major non-EGU industrial boilers, and major
cement kilns. EPA approved Ohio's rules as fulfilling Phase I of the
NOX SIP Call on August 5, 2003 (68 FR 46089,) and June 27,
2005 (70 FR 36845), and as fulfilling Phase II of the SIP call on
February 4, 2008 (73 FR 6427). Beginning in 2004, this rule accounts
for approximately a 31 percent reduction in statewide NOX
emissions.
    iv. Federal Emission Control Measures. Reductions in VOC and
NOX emissions have occurred Statewide and in upwind areas as
a result of Federal emission control measures, with additional emission
reductions expected to occur in the future. Federal emission control
measures include: The National Low Emission Vehicle (NLEV) program,
Tier 2 emission standards for vehicles, gasoline sulfur limits, low
sulfur diesel fuel standards, and heavy-duty diesel engine standards.
In addition, on June 29, 2004 (69 FR 38958), EPA issued the Clean Air
Non-road Diesel Rule, which phases in Tier 4 emissions standards over
the 2008-2015 time period.
    v. Control Measures in Upwind Areas. On October 27, 1998 (63 FR
57356), EPA issued a NOX SIP call requiring the District of
Columbia and 22 States to reduce emissions of NOX. The
reduction in NOX emissions has resulted in lower
concentrations of transported ozone entering the Cleveland-Akron-Lorain
area. Emission reductions resulting from regulations developed in
response to the NOX SIP call are permanent and enforceable.
    b. Emission Reductions.
    Ohio is using the 2002 base year inventory developed pursuant to
section 182(a)(1) of the CAA as the nonattainment inventory. In
developing the 2002 base year inventory, Ohio EPA provided point and
area source inventories to the Lake Michigan Air Directors Consortium
(LADCO). The main purpose of LADCO is to provide technical assessments
for and assistance to its member States on problems of air quality.
LADCO's primary geographic focus is the area encompassed by its member
States (Illinois, Indiana, Michigan, Ohio and Wisconsin) and any areas
which affect air quality in its member States. LADCO processed these
inventories through the Emission Modeling System (EMS) to generate
summer weekday emissions for VOC and NOX. The processed
modeling inventories were used for the base year inventory. The point
source data provided to LADCO is a combination of EPA's EGU inventory
and source-specific data reported to Ohio EPA for non-EGU sources. Area
source emissions were estimated by Ohio EPA using published Emission
Inventory Improvement Program methodologies or methodologies shared by
other States. Ohio EPA documented the methodology used for each area
source category. Nonroad mobile emissions were generated for LADCO
using EPA's National Mobile Inventory Model (NMIM), with the following
exceptions: recreational motorboat populations and spatial surrogates
were updated; emissions estimates were developed for commercial marine
vessels, aircraft, and railroads (MAR), three nonroad categories not
included in NMIM; and, onroad mobile emissions were calculated using
the MOBILE6.2 emissions model.
    Ohio is using 2006 for the attainment year inventory. Ohio EPA
developed a 2005 base year inventory, in conjunction with LADCO, using
the methodology described above for base year 2002. With the exception
of the onroad mobile sector, Ohio EPA used growth factors provided by
LADCO to project this inventory to 2006. Onroad mobile emissions were
calculated for 2006 using the MOBILE6.2 emissions model.
    Using the inventories described above, Ohio's submittal documents
changes in VOC and NOX emissions from 2002 to 2006 for the
Cleveland-Akron-Lorain area. Emissions data are shown in Tables 3
through 5 below.

                              Table 3--Cleveland-Akron-Lorain Area VOC and NOX Emissions for Nonattainment Year 2002 (TPD)
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                             Point               Area               Nonroad             Onroad               Total
                                                     ---------------------------------------------------------------------------------------------------
                                                         VOC       NOX       VOC       NOX       VOC       NOX       VOC       NOX       VOC       NOX
--------------------------------------------------------------------------------------------------------------------------------------------------------
Ashtabula...........................................      5.58     11.46      3.31      0.51      9.77      8.99      5.78      9.60     24.44     30.56
Cuyahoga............................................      2.19     10.76     46.90      5.90     39.95     40.28     43.68     90.55    132.72    147.49
Geauga..............................................      0.00      0.00      8.26      0.44      3.98      2.07      3.62      6.80     15.86      9.31
Lake................................................      0.49     72.36      9.01      0.97     13.35      8.27      8.20     17.65     31.05     99.25
Lorain..............................................      2.44     58.68     11.96      0.77     13.46     13.60      9.54     20.33     37.40     93.38
Medina..............................................      0.20      0.08      6.18      0.76      3.96      4.02      7.58     16.31     17.92     21.17
Portage.............................................      0.61      0.00      6.45      0.77      5.10      5.68      6.61     14.56     18.77     21.01
Summit..............................................      1.13      3.64     18.61      2.37      9.15     11.53     24.48     50.37     53.37     67.91
                                                     ---------------------------------------------------------------------------------------------------
    Total...........................................     12.64    156.98    110.68     12.49     98.72     94.44    109.49    226.17    331.53    490.08
--------------------------------------------------------------------------------------------------------------------------------------------------------

                                  Table 4--Cleveland-Akron-Lorain VOC and NOX Emissions for Attainment Year 2006 (TPD)
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                             Point               Area               Nonroad             Onroad               Total
                                                     ---------------------------------------------------------------------------------------------------
                                                         VOC       NOX       VOC       NOX       VOC       NOX       VOC       NOX       VOC       NOX
--------------------------------------------------------------------------------------------------------------------------------------------------------
Ashtabula...........................................      0.94      4.52      5.89      0.85      9.19      8.71      4.00      7.01     20.02     21.09
Cuyahoga............................................      3.68     13.56     44.14     13.83     40.62     36.61     27.64     64.40    116.08    128.40
Geauga..............................................      0.00      0.00      9.96      1.01      4.87      2.58      2.41      5.06     17.24      8.65

Lake................................................      0.82     37.48      9.06      2.30     11.13      8.99      5.33     13.00     26.34     61.77
Lorain..............................................      3.18     27.31     11.45      2.66     13.03     12.84      6.17     14.88     33.83     57.69
Medina..............................................      0.79      0.26      7.40      1.57      5.29      5.02      5.05     12.32     18.53     19.17
Portage.............................................      0.95      0.22      6.19      1.52      7.49      6.25      4.30     10.79     18.93     18.78
Summit..............................................      1.27      3.23     18.17      5.51     12.36     11.33     14.18     34.28     45.98     54.35
                                                     ---------------------------------------------------------------------------------------------------
    Total...........................................     11.63     86.58     92.32     29.25     57.67     92.33     69.08    161.74    296.95    369.90
--------------------------------------------------------------------------------------------------------------------------------------------------------

                                 Table 5--Comparison of Cleveland-Akron-Lorain 2002 and 2006 VOC and NOX Emissions (TPD)
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                VOC                                             NOX
                                                         -----------------------------------------------------------------------------------------------
                                                                                Net change                                      Net change
                                                               2002            2006         (2002-2006)        2002            2006         (2002-2006)
--------------------------------------------------------------------------------------------------------------------------------------------------------
Point...................................................           12.64           11.63           -1.01          156.98           86.58          -70.40
Area....................................................          110.68           92.32          -18.36           12.49           29.25           16.76
Nonroad.................................................           98.72           57.67          -41.05           94.44           92.33           -2.11
Onroad..................................................          109.49           69.08          -40.41          226.17          161.74          -64.43
                                                         -----------------------------------------------------------------------------------------------
    Total...............................................          331.53          296.95          -34.58          490.08          369.90         -120.18
--------------------------------------------------------------------------------------------------------------------------------------------------------

    Table 5 shows that the Cleveland-Akron-Lorain area reduced VOC
emissions by 34.58 tpd and NOX emissions by 120.18 tpd
between 2002 and 2006. Based on the information summarized above, Ohio
has adequately demonstrated that the improvement in air quality is due
to permanent and enforceable emissions reductions.
4. The Area Has a Fully Approved Maintenance Plan Pursuant to Section
175a of the CAA (Section 107(d)(3)(E)(iv))
    In conjunction with its request to redesignate the Cleveland-Akron-
Lorain nonattainment area to attainment status, Ohio submitted a SIP
revision to provide for the maintenance of the 8-hour ozone NAAQS in
the area through 2020.
    a. What Is Required in a Maintenance Plan?
    Section 175A of the CAA sets forth the required elements of a
maintenance plan for areas seeking redesignation from nonattainment to
attainment. Under section 175A, the plan must demonstrate continued
attainment of the applicable NAAQS for at least ten years after the
Administrator approves a redesignation to attainment. Eight years after
the redesignation, the State must submit a revised maintenance plan
which demonstrates that attainment will continue to be maintained for
ten years following the initial ten-year maintenance period. To address
the possibility of future NAAQS violations, the maintenance plan must
contain contingency measures with a schedule for implementation as EPA
deems necessary to assure prompt correction of any future 8-hour ozone
violations.
    The September 4, 1992, John Calcagni memorandum provides additional
guidance on the content of a maintenance plan. The memorandum clarifies
that an ozone maintenance plan should address the following items: The
attainment VOC and NOX emissions inventories, a maintenance
demonstration showing maintenance for the ten years of the maintenance
period, a commitment to maintain the existing monitoring network,
factors and procedures to be used for verification of continued
attainment of the NAAQS, and a contingency plan to prevent or correct
future violations of the NAAQS.
    b. Attainment Inventory.
    The Ohio EPA developed an emissions inventory for 2006, one of the
years Ohio used to demonstrate monitored attainment of the 8-hour
NAAQS, as described above. The attainment level of emissions is
summarized in Table 4, above.
    c. Demonstration of Maintenance.
    Along with the redesignation request, Ohio submitted a revision to
the 8-hour ozone SIP to include a maintenance plan for the Cleveland-
Akron-Lorain area, in compliance with section 175A of the CAA. This
demonstration shows maintenance of the 8-hour ozone standard through
2020 by assuring that current and future emissions of VOC and
NOX for the Cleveland-Akron-Lorain area remain at or below
attainment year emission levels. A maintenance demonstration need not
be based on modeling. See Wall v. EPA, 265 F.3d 426 (6th Cir. 2001),
Sierra Club v. EPA, 375 F. 3d 537 (7th Cir. 2004). See also 66 FR
53094, 53099-53100 (October 19, 2001), 68 FR 25413, 25430-25432 (May
12, 2003).
    Ohio is using emissions inventories for the years 2012 and 2020 to
demonstrate maintenance. Onroad emissions for 2012 and 2020 were
calculated using the MOBILE6.2 emissions model. Emissions estimates for
the remaining source categories were based on future year inventories
developed by LADCO for the years 2012 and 2018. With the exception of
MAR, nonroad emissions for these years were estimated using NMIM. MAR
emissions were derived by applying growth and control factors to the
2005 inventory. Area source and point source emissions were derived by
applying growth and control factors to the 2005 inventory. EGU
emissions estimates assume no credit for implementation of CAIR in the
area. To derive 2020 emissions estimates, Ohio EPA applied LADCO growth
factors to the 2018 LADCO inventory.
    Ohio is in the process of revising its State rules for its Best
Available Technology (BAT) minor source permitting program. As
discussed above, a State can demonstrate maintenance of the standard by
showing that future emissions of VOC and NOX for the area
remain at or below attainment year emission levels. Ohio EPA's
emissions projections for this maintenance plan assume no emissions
benefits from implementation of the

BAT program. The LADCO growth factors used to project future emissions
were developed using techniques consistent among the LADCO States and
assume implementation of no minor source permitting programs for any
State, including Ohio. The emission projections show that Ohio EPA does
not expect emissions in the Cleveland-Akron-Lorain area to exceed the
level of the 2006 attainment year inventory during the maintenance
period. Ohio's maintenance plan demonstrates that the area can maintain
the standard through 2020 applying standard growth factors and without
the BAT program. EPA believes that Ohio has provided adequate
demonstration of maintenance, and that any changes to the BAT program
should not impact the Cleveland-Akron-Lorain area's ability to attain
or maintain the 1997 8-hour ozone NAAQS. Therefore, the issues
associated with the BAT program are not being considered for purposes
of this redesignation. Nothing in this rule or redesignation is
intended to affect the SIP approvability or non-approvability of any
revised Ohio BAT rules, and EPA will evaluate the approvability of such
rules when Ohio submits them. Emissions data are shown in Table 6
below.

                                Table 6--Cleveland-Akron-Lorain Area VOC and NOX Emissions for 2006, 2012 and 2020 (TPD)
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                          VOC                                                 NOX
                                                 -------------------------------------------------------------------------------------------------------
                                                                                Net        Net                                      Net        Net
                                                    2006      2012      2020      change     change     2006      2012      2020      change     change
                                                                                2006-2012  2006-2020                                2006-2012  2006-2020
--------------------------------------------------------------------------------------------------------------------------------------------------------
Point...........................................     11.63     12.90     15.01       1.27       3.38     86.58     73.19     71.79     -13.39     -14.79
Area............................................    112.26     96.18     92.63     -16.08     -19,63     29,25     29.58     29.71       0.33       0.46
Nonroad.........................................    103.98     77.12     76.99     -26.86     -26.99     92.33     69.65     44.06     -22.68     -48.27
Onroad..........................................     69.08     40.56     27.38     -28.52     -41.70    161.74     83.36     37.66     -78.38    -124.08
                                                 -------------------------------------------------------------------------------------------------------
    Total.......................................    296.95    226.76    212.01     -70.19     -84.94    369.90    255.78    183.22    -114.12    -186.68
--------------------------------------------------------------------------------------------------------------------------------------------------------

    The emission projections show that Ohio EPA does not expect
emissions in the Cleveland-Akron-Lorain area to exceed the level of the
2006 attainment year inventory during the maintenance period. In the
Cleveland-Akron-Lorain area, Ohio EPA projects that VOC and
NOX emissions will decrease by 84.94 tpd and 186.68 tpd,
respectively, between 2006 and 2020.
    In addition, LADCO performed a regional modeling analysis to
address the effect of the recent court decision vacating CAIR. This
analysis is documented in LADCO's ``Regional Air Quality Analyses for
Ozone, PM2.5, and Regional Haze: Final Technical Support Document
(Supplement), September 12, 2008.'' LADCO produced a base year
inventory for 2005 and future year inventories for 2009, 2012, and
2018. To estimate future EGU NOX emissions without
implementation of CAIR, LADCO projected 2007 EGU NOX
emissions for all States in the modeling domain based on Energy
Information Administration growth rates by State (North American
Electric Reliability Corporation (NERC) region) and fuel type for the
years 2009, 2012 and 2018. The assumed 2007-2018 growth rates were 8.8%
for Illinois, Iowa, Missouri and Wisconsin; 13.5% for Indiana,
Kentucky, Michigan and Ohio; and 15.1% for Minnesota. Emissions were
adjusted by applying legally enforceable controls, e.g., consent decree
or rule. EGU NOX emissions projections for the States of
Illinois, Indiana, Michigan, Ohio, and Wisconsin are shown below in
Table 7. The emission projections used for the modeling analysis do not
account for certain relevant factors such as allowance trading and
potential changes in operation of existing control devices. The
NOX projections indicate that, due to the NOX SIP
call, certain State rules, consent decrees resulting from enforcement
cases, and ongoing implementation of a number of mobile source rules,
EGU NOX is not expected to increase in Ohio or any of the
States in the immediate region, and overall NOX emissions in
Ohio and the nearby region are expected to decrease substantially
between 2005 and 2020.\2\ Total NOX emissions projections
are shown in Table 8, below.
---------------------------------------------------------------------------

    \2\ There is more uncertainty about the use of SO2
allowances and future projections for SO2 emissions;
thus, further review and discussion will be needed regarding the
appropriateness of using these emission projections for future PM2.5
SIP approvals and redesignation requests.

  Table 7--EGU NOX Emissions for the States of Illinois, Indiana, Michigan, Ohio and Wisconsin (TPD) for 2007,
                                              2009, 2012, and 2018
----------------------------------------------------------------------------------------------------------------
                                                    2007             2009             2012             2018
----------------------------------------------------------------------------------------------------------------
EGU.........................................           1,582            1,552            1,516            1,524
----------------------------------------------------------------------------------------------------------------

  Table 8--Total NOX Emissions for the States of Illinois, Indiana, Michigan, Ohio and Wisconsin (TPD) for the
                                        Years 2005, 2009, 2012, and 2018
----------------------------------------------------------------------------------------------------------------
                                                    2005             2009             2012             2018
----------------------------------------------------------------------------------------------------------------
Total NOX...................................           8,260            6,778            6,076            4,759
----------------------------------------------------------------------------------------------------------------

    Given that 2007 is one of the years Ohio used to demonstrate
monitored attainment of the 8-hour NAAQS, Table 7 shows that EGU
NOX emissions will remain below attainment levels through
2018. If the rate of emissions increase

between 2012 and 2018 continues through 2020, EGU NOX
emissions would still remain below attainment levels in 2020.
Furthermore, as shown in Table 8, total NOX emissions
clearly continue to decrease substantially throughout the maintenance
period.
    Ozone modeling performed by LADCO using this emissions data
supports the conclusion that the Cleveland-Akron-Lorain area will
maintain the standard throughout the maintenance period. Peak modeled
ozone levels in the area for 2009, 2012 and 2018 are 0.084 ppm, 0.081
ppm, and 0.078 ppm, respectively. These projected ozone levels were
modeled applying only legally enforceable controls; e.g., consent
decrees, rules, the NOX SIP call, Federal motor vehicle
control programs (FMVCP), etc. Because these programs will remain in
place, emission levels, and therefore ozone levels, would not be
expected to increase significantly between 2018 and 2020. Given that
projected emissions and modeled ozone levels continue to decrease
substantially through 2018, it is reasonable to infer that a 2020
modeling run would also show levels well below the 1997 8-hour ozone
standard.
    As part of its maintenance plan, the State elected to include a
``safety margin'' for the area. A ``safety margin'' is the difference
between the attainment level of emissions (from all sources) and the
projected level of emissions (from all sources) in the maintenance plan
which continues to demonstrate attainment of the standard. The
attainment level of emissions is the level of emissions during one of
the years in which the area met the NAAQS. The Cleveland-Akron-Lorain
area attained the 8-hour ozone NAAQS during the 2006-2008 time period.
Ohio used 2006 as the attainment level of emissions for the area. In
the maintenance plan, Ohio EPA projected emission levels for 2020. For
the Cleveland-Akron-Lorain area, the emissions from point, area,
nonroad, and mobile sources in 2006 equaled 296.85 tpd of VOC. Ohio EPA
projected VOC emissions for the year 2020 to be 212.01 tpd of VOC. The
SIP submission demonstrates that the Cleveland-Akron-Lorain area will
continue to maintain the standard with emissions at this level. The
safety margin for VOC is calculated to be the difference between these
amounts or, in this case, 84.946 tpd of VOC for 2020. By this same
method, 186.68 tpd (i.e., 369.90 tpd less 183.22 tpd) is the safety
margin for NOX for 2020. The safety margin, or a portion
thereof, can be allocated to any of the source categories, as long as
the total attainment level of emissions is maintained.
    d. Monitoring Network.
    Ohio currently operates eleven ozone monitors in the Cleveland-
Akron-Lorain area. Ohio EPA has committed to continue to operate these
ozone monitors. Further, Ohio EPA commits to consult with EPA prior to
making changes to the existing monitoring network, should changes
become necessary in the future. Ohio EPA remains obligated to continue
to quality assure monitoring data in accordance with 40 CFR part 58 and
enter all data into the Air Quality System in accordance with Federal
guidelines.
    e. Verification of Continued Attainment.
    Continued attainment of the ozone NAAQS in the Cleveland-Akron-
Lorain area depends, in part, on the State's efforts toward tracking
indicators of continued attainment during the maintenance period.
Ohio's plan for verifying continued attainment of the 8-hour standard
in the Cleveland-Akron-Lorain area consists of plans to continue
ambient ozone monitoring in accordance with the requirements of 40 CFR
part 58. Ohio EPA will also continue to develop and submit periodic
emission inventories as required by the Federal Consolidated Emissions
Reporting Rule (67 FR 39602, June 10, 2002) to track future levels of
emissions.
    f. Contingency Plan.
    The contingency plan provisions are designed to promptly correct or
prevent a violation of the NAAQS that might occur after redesignation
of an area to attainment. Section 175A of the CAA requires that a
maintenance plan include such contingency measures as EPA deems
necessary to assure that the State will promptly correct a violation of
the NAAQS that occurs after redesignation. The maintenance plan should
identify the contingency measures to be adopted, a schedule and
procedure for adoption and implementation of the contingency measures,
and a time limit for action by the State. The State should also
identify specific indicators to be used to determine when the
contingency measures need to be adopted and implemented. The
maintenance plan must include a requirement that the State will
implement all measures with respect to control of the pollutant(s) that
were contained in the SIP before redesignation of the area to
attainment. See section 175A(d) of the CAA.
    As required by section 175A of the CAA, Ohio has adopted a
contingency plan for the Cleveland-Akron-Lorain area to address
possible future ozone air quality problems. The contingency plan
adopted by Ohio has two levels of response, depending on whether a
violation of the 8-hour ozone standard is only threatened (warning
level response) or has occurred (action level response).
    A warning level response will be triggered when an annual fourth
high monitored value of 0.088 ppm or higher is monitored within the
maintenance area. A warning level response will consist of Ohio EPA
conducting a study to determine whether the ozone value indicates a
trend toward higher ozone values or whether emissions appear to be
increasing. The study will evaluate whether the trend, if any, is
likely to continue and, if so, the control measures necessary to
reverse the trend. The study will consider ease and timing of
implementation as well as economic and social impacts. Implementation
of necessary controls in response to a warning level response trigger
will take place within 12 months from the conclusion of the most recent
ozone season.
    An action level response will be triggered when a two-year average
fourth high value of 0.085 ppm is monitored within the maintenance
area. A violation of the standard (a three-year average of the annual
fourth-highest daily maximum 8-hour average ozone concentration of
0.085 ppm or greater) also triggers an action level response. When an
action level response is triggered, Ohio EPA will determine what
additional control measures are needed to assure future attainment of
the ozone standard. Control measures selected will be implemented
within 18 months from the close of the ozone season that prompted the
action level. Ohio EPA will also consider if significant new
regulations not currently included as part of the maintenance
provisions will be implemented in a timely manner and would thus
constitute a response.
    Ohio EPA included the following list of potential contingency
measures in the maintenance plan:
    i. Lower Reid vapor pressure gasoline program;
    ii. Tighten RACT on existing sources covered by CTGs issued in
response to the 1990 CAA;
    iii. One or more transportation control measures sufficient to
achieve at least half a percent reduction in actual area wide VOC
emissions;
    iv. Alternative fuel and diesel retrofit programs for fleet vehicle
operations;
    v. Require VOC or NOX emission offsets for new and
modified major sources;

    vi. Require VOC or NOX emission offsets for new and
modified minor sources;
    vii. Increase the ratio of emission offsets required for new
sources;
    viii. Require VOC or NOX controls on new minor sources
(less than 100 tpy); and
    ix. Adopt NOX RACT for existing combustion sources.
    g. Provisions for Future Updates of the Ozone Maintenance Plan.
    As required by section 175A(b) of the CAA, Ohio commits to submit
to the EPA an updated ozone maintenance plan eight years after
redesignation of the Cleveland-Akron-Lorain area to cover an additional
ten-year period beyond the initial ten-year maintenance period. As
required by section 175(A) of the CAA, Ohio has committed to retain the
VOC and NOX control measures contained in the SIP prior to
redesignation.
    EPA has concluded that the maintenance plan adequately addresses
the five basic components of a maintenance plan: Attainment inventory,
maintenance demonstration, monitoring network, verification of
continued attainment, and a contingency plan. The maintenance plan SIP
revision submitted by Ohio for the Cleveland-Akron-Lorain area meets
the requirements of section 175A of the CAA.

B. Adequacy of Ohio's MVEBs

1. How Are MVEBs Developed and What Are the MVEBs for the Cleveland-
Akron-Lorain Area?
    Under the CAA, States are required to submit, at various times,
control strategy SIP revisions and ozone maintenance plans for ozone
nonattainment areas and for areas seeking redesignations to attainment
of the ozone standard. These emission control strategy SIP revisions
(e.g., reasonable further progress SIP and attainment demonstration SIP
revisions) and ozone maintenance plans create MVEBs based on onroad
mobile source emissions for criteria pollutants and/or their precursors
to address pollution from cars and trucks. The MVEBs are the portions
of the total allowable emissions that are allocated to highway and
transit vehicle use that, together with emissions from other sources in
the area, will provide for attainment or maintenance.
    Under 40 CFR part 93, a MVEB for an area seeking a redesignation to
attainment is established for the last year of the maintenance plan.
The MVEB serves as a ceiling on emissions from an area's planned
transportation system. The MVEB concept is further explained in the
preamble to the November 24, 1993, transportation conformity rule (58
FR 62188). The preamble also describes how to establish the MVEB in the
SIP and how to revise the MVEB if needed.
    Under section 176(c) of the CAA, new transportation projects, such
as the construction of new highways, must ``conform'' to (i.e., be
consistent with) the part of the SIP that addresses emissions from cars
and trucks. Conformity to the SIP means that transportation activities
will not cause new air quality violations, worsen existing air quality
violations, or delay timely attainment of the NAAQS. If a
transportation plan does not conform, most new transportation projects
that would expand the capacity of roadways cannot go forward.
Regulations at 40 CFR part 93 set forth EPA policy, criteria, and
procedures for demonstrating and assuring conformity of such
transportation activities to a SIP.
    When reviewing SIP revisions containing MVEBs, including attainment
strategies, rate-of-progress plans, and maintenance plans, EPA must
affirmatively find that the MVEBs are ``adequate'' for use in
determining transportation conformity. Once EPA affirmatively finds the
submitted MVEBs to be adequate for transportation conformity purposes,
the MVEBs are used by State and Federal agencies in determining whether
proposed transportation projects conform to the SIP as required by
section 176(c) of the CAA. EPA's substantive criteria for determining
the adequacy of MVEBs are set out in 40 CFR 93.118(e)(4).
    EPA's process for determining adequacy of a MVEB consists of three
basic steps: (1) Providing public notification of a SIP submission; (2)
providing the public the opportunity to comment on the MVEB during a
public comment period; and (3) EPA's finding of adequacy. The process
of determining the adequacy of submitted SIP MVEBs was initially
outlined in EPA's May 14, 1999, guidance, ``Conformity Guidance on
Implementation of March 2, 1999, Conformity Court Decision.'' This
guidance was codified in the Transportation Conformity Rule Amendments
for the ``New 8-Hour Ozone and PM 2.5 National Ambient Air Quality
Standards and Miscellaneous Revisions for Existing Areas;
Transportation Conformity Rule Amendments--Response to Court Decision
and Additional Rule Change,'' published on July 1, 2004 (69 FR 40004).
EPA follows this guidance and rulemaking in making its adequacy
determinations.
    The Cleveland-Akron-Lorain area's maintenance plan contains new VOC
and NOX MVEBs for the years 2012 and 2020. The availability
of the SIP submission with these 2012 and 2020 MVEBs was announced for
public comment on EPA's Adequacy Web site on February 18, 2009 at:
http://www.epa.gov/otaq/stateresources/transconf/currsips.htm. The EPA
public comment period on adequacy of the 2012 and 2020 MVEBs for the
Cleveland-Akron-Lorain area closed on March 20, 2009. No requests for
this submittal or adverse comments on the submittal were received
during the adequacy comment period. In a letter dated March 30, 2009,
EPA informed Ohio EPA that we had found the 2012 and 2020 MVEBs to be
adequate for use in transportation conformity analyses.
    EPA, through this rulemaking, is proposing to approve the MVEBs for
use to determine transportation conformity in the Cleveland-Akron-
Lorain area because EPA has determined that the area can maintain
attainment of the 8-hour ozone NAAQS for the relevant maintenance
period with mobile source emissions at the levels of the MVEBs. Ohio
EPA has determined the 2012 MVEBs for the Cleveland-Akron-Lorain area
to be 46.64 tpd for VOC and 95.89 tpd for NOX. Ohio EPA has
determined the 2020 MVEBs for the area to be 31.48 tpd for VOC and
42.75 tpd for NOX. These MVEBs are consistent with the
onroad mobile source VOC and NOX emissions projected by Ohio
EPA for 2012 and 2020, as summarized in Table 6 above. Ohio has
demonstrated that the Cleveland-Akron-Lorain area can maintain the 8-
hour ozone NAAQS with mobile source emissions of 46.64 tpd and 31.48
tpd of VOC and 95.89 tpd and 42.75 tpd of NOX in 2012 and
2020, respectively, since emissions will remain under attainment year
emission levels.
2. What Is a Safety Margin?
    A ``safety margin'' is the difference between the attainment level
of emissions (from all sources) and the projected level of emissions
(from all sources) in the maintenance plan. As noted in Table 6, the
Cleveland-Akron-Lorain area emissions are projected to have safety
margins of 70.19 tpd for VOC and 114.12 tpd for NOX in 2012
(the difference between the attainment year, 2006, emissions and the
projected 2012 emissions for all sources in the Cleveland-Akron-Lorain
area). For 2020, the Cleveland-Akron-Lorain area emissions are
projected to have safety margins of 84.94 tpd for VOC and 186.68 tpd
for NOX. Even if emissions reached the full level of the
safety

margin, the counties would still demonstrate maintenance since emission
levels would equal those in the attainment year.
    The MVEBs requested by Ohio EPA contain safety margins for mobile
sources smaller than the allowable safety margins reflected in the
total emissions for the Cleveland-Akron-Lorain area. The State is not
requesting allocation of the entire available safety margins reflected
in the demonstration of maintenance. Therefore, even though the State
is requesting MVEBs that exceed the projected onroad mobile source
emissions for 2012 and 2020 contained in the demonstration of
maintenance, the increase in onroad mobile source emissions that can be
considered for transportation conformity purposes is well within the
safety margins of the ozone maintenance demonstration. Further, once
allocated to mobile sources, these safety margins will not be available
for use by other sources.

C. 2002 Base Year Emissions Inventory

    As discussed above, section 182(a)(1) of the CAA requires areas
classified as marginal and above to submit a base year emissions
inventory. As part of Ohio's redesignation request for the Cleveland-
Akron-Lorain area, the State submitted a 2002 base year emissions
inventory. This inventory is discussed above and summarized in Table 3.
EPA is proposing to approve this 2002 base year inventory as meeting
the section 182(a)(1) emissions inventory requirement.

D. 15% ROP Plan

    On June 15, 2007, and February 22, 2008, Ohio EPA submitted an
attainment demonstration and reasonable further progress plans for the
Cleveland-Akron-Lorain area as required by section 182(b)(1) of the
CAA. In those submittals, Ohio EPA requested that EPA act on the 15%
ROP plan that was originally submitted by Ohio to meet section
182(b)(1) requirements under the 1-hour ozone standard. The 1-hour
ozone 15% ROP plan was originally submitted on March 14, 1994, and
supplemented on June 9, 1995. Because the area subsequently attained
the 1-hour ozone standard, EPA redesignated the area on May 7, 1996 and
did not take action on the 15% ROP plan.
    As discussed in greater detail below, EPA has evaluated Ohio's 15%
ROP plan and has found it to be consistent with section 182(b)(1) of
the CAA and EPA policy documents. Therefore, we are proposing to
approve Ohio's 15% plan as meeting the 182(b)(1) requirements for the
Cleveland-Akron-Lorain area under the 1-hour ozone standard. Approval
of Ohio's 1-hour ozone 15% ROP plan is not required for purposes of the
8-hour redesignation. However, because the plan meets the requirements
of the CAA and may be helpful in future implementation of ozone
standards, we are acting on the State's request to approve this plan.
1. Review Criteria
    Section 182(b)(1) of the CAA requires that the ROP plan provide for
a 15% reduction from baseline VOC emissions in the ozone nonattainment
area, accounting for any growth in emissions after 1990. This emission
reduction must be achieved within six years after the date of the
enactment of the 1990 Clean Air Act revisions (by November 15, 1996).
    The CAA defines the baseline emissions to be the total amount of
actual VOC emissions from all anthropogenic sources in the area during
the calendar year of 1990, excluding emissions that would be eliminated
under Federal Motor Vehicle Control Program (FMVCP) measures
promulgated by the EPA by January 1, 1990, and any gasoline Reid Vapor
Pressure (RVP) regulations promulgated by EPA by November 15, 1990, or
required to be promulgated under section 211 of the CAA.
    Section 182(b)(1) of the CAA allows emission reductions to be
creditable except for the RVP and FMVCP emission reductions mentioned
above, any emission reductions from measures resulting from EPA-
required corrections to motor vehicle Inspection and Maintenance (I/M)
programs required to be submitted immediately after enactment of the
1990 Clean Air Act revisions, and emission reductions resulting from
EPA-required corrections to the State VOC RACT rules that were required
by section 182(a)(2)(A) of the CAA concerning RACT fix-up requirements.
In general, VOC emission reductions are creditable toward the ROP
emission reduction requirement to the extent that they have actually
occurred, as of six years after November 15, 1990, resulting from the
implementation of measures required under the applicable implementation
plan, rules promulgated by the Administrator (EPA), or a permit issued
under Title V of the CAA.
2. Review of the 15% VOC-Only ROP Plan for the Cleveland-Akron-Lorain,
OH 1-Hour Ozone Nonattainment Area
    a. Calculation of the Adjusted Base Year Inventory.
    The CAA specifies the emission baseline from which the 15% VOC-only
reduction is calculated. This baseline value is termed the 1990
adjusted base year inventory. Section 182(b)(1)(D) of the CAA excludes
from the baseline the emissions that would be eliminated by FMVCP
regulations promulgated by January 1, 1990, and RVP regulations (55 FR
23666, June 11, 1990) promulgated by EPA prior to November 15, 1990.
    The adjusted base year inventory is determined by starting with the
1990 base year emission inventory, and then removing all biogenic
emissions as well as emissions from sources located outside of the
designated nonattainment boundary. (The 1990 base year emissions
inventory was submitted to the EPA on March 14, 1994, at the same time
that the 15% VOC-only ROP plan was submitted for the Cleveland-Akron-
Lorain, OH 1-hour ozone nonattainment area.) The resulting inventory is
termed the 1990 ROP base year inventory. The 1990 ROP base year
inventory is then adjusted by removing the expected FMVCP and RVP
reductions to derive the adjusted base year inventory. These
calculations are summarized in Table 7, below, and result in an
adjusted base year inventory of 366.97 tpd VOC.
    b. Required VOC Emission Reductions.
    The 1990 adjusted base year inventory is multiplied by 0.15 to
calculate 15% of the adjusted base year emissions. Therefore, to meet
the ROP requirement, Ohio's plan must provide for at least a 55.05 tpd
reduction in VOC emissions (366.97 tpd VOC multiplied by 0.15), in
addition to the reduction needed to offset growth.
    As noted above, under section 182(b)(1)(D) of the CAA, the
following reductions are not creditable toward the ROP reductions: (1)
FMVCP regulations promulgated by January 1, 1990; (2) RVP regulations
promulgated by EPA before enactment of the 1990 Clean Air Act
Amendments; (3) certain corrections to VOC RACT rules and; (4)
corrections to basic automobile I/M programs. Thus, the total expected
reductions are comprised of the reductions necessary to meet the ROP
requirement and the expected emissions reductions from the four
noncreditable programs. The total expected emissions reductions are
171.87 tpd VOC (55.05 tpd + 109.06 tpd FMVCP & RVP reductions + 7.76
tpd RACT & I/M corrections reductions).
    The amount of reduction necessary to meet the contingency plan
requirement is 3% of the adjusted base year inventory. Therefore, to
meet the contingency requirement, the State's plan must provide for at
least 11.01 tpd

reduction in VOC emissions (366.97 tpd VOC multiplied by 0.03). The
1996 target level of VOC emissions is 304.16 tpd, the 1990 ROP base
year inventory minus the total expected emission reductions (476.03
tpd-171.87 tpd).
    c. Projected Emission Inventory.
    Emission projections are needed to determine if the ROP
requirements in the CAA are met. Growth factors are not included in the
calculations of the 1990 adjusted base year inventory or the 1996
target level of emissions. Growth factors are needed, however, to
project emissions to 1996 for the ROP demonstration as part of the ROP
plan.
    Ohio calculated point source emissions growth based on earnings
data obtained from the Bureau of Economic Analysis. Area source
emissions were projected based on population, industrial employment,
and State gasoline consumption growth. For mobile source emissions, a
travel demand model was run to estimate 1996 VMT. Total 1996 VOC
emissions including growth were estimated to be 373.00 tpd.
    d. Total VOC Emission Reductions Necessary To Meet the 15% VOC-Only
ROP Requirement.
    The required VOC emissions reduction to meet the 15% ROP
requirements is 68.84 tpd. This is the difference between the projected
1996 emissions with growth and no additional controls, and the 1996
target level of emissions (373.00 tpd VOC-304.16 tpd VOC).
    Provided in Table 9 is a summary of the results of the emissions
calculations used to determine the required 15% VOC-only ROP plan
reductions.

  Table 9--Summary of Calculations Used To Determine the VOC Reductions
 Needed by 1996 for the Cleveland-Akron-Lorain Area To Meet the 15% VOC-
                     Only ROP Reduction Requirement
------------------------------------------------------------------------
                                                           VOC emissions
                                                               (tpd)
------------------------------------------------------------------------
1990 Base Year Emissions Inventory......................          681.00
1990 ROP Base Year Emissions Inventory (nonattainment             476.03
 area anthropogenic only)...............................
Noncreditable Emission Reductions from FMVCP and RVP....          109.06
1990 Adjusted Base Year Inventory (1990 ROP Base Year             366.97
 Inventory minus RVP and FMVCP).........................
15% of Adjusted Base Year Emissions.....................           55.05
Noncreditable Emission Reductions from Corrections to               7.76
 VOC RACT Rules and the Basic I/M Program...............
Total Expected Emission Reductions by 1996 (FMVCP & RVP           171.87
 + 15% + RACT & I/M corrections)........................
1996 Target Level of Emissions (1990 ROP Base Year                304.16
 Inventory minus total expected emission reductions by
 1996)..................................................
Estimated 1996 Emissions (Anthropogenic), including               373.00
 growth.................................................
Required Reductions by 1996 to Meet the 15% ROP                    68.84
 Requirements (Estimated 1996 emissions minus 1996
 target level of emissions).............................
3% Contingency Plan Reduction...........................           11.01
------------------------------------------------------------------------

    e. Control Measures.
    The control measures adopted by Ohio to achieve a 69.77 tpd
reduction in VOC emissions are listed in Table 10, below. The table
does not include any Federal measures used to reduce the mobile source
emissions. These reductions are already accounted for in the MOBILE5a
emissions model that, in combination with the projected VMT for the
area, was used to estimate the future emissions for the area.

 Table 10--Summary of Control Measures Selected by the State To Achieve
   the 15% VOC-Only ROP Reductions for the Cleveland-Akron-Lorain Area
------------------------------------------------------------------------
                                                          VOC  emissions
            Control measure used to meet ROP                reductions
                                                               (tpd)
------------------------------------------------------------------------
Stage II gasoline vapor recovery........................            8.43
Enhanced I/M............................................           37.92
NESHAP..................................................            3.42
Enforcement cases.......................................            9.79
Architectural coatings..................................            6.7
Removal of 100 ton per year cutoff......................            0.69
Transportation control measures.........................            2.82
                                                         ---------------
    Total Emission Reductions...........................           69.77
------------------------------------------------------------------------
Contingency Emissions Reduction (lower RVP fuel)........           13.03
------------------------------------------------------------------------

    Overall, Ohio's ROP plan provides for a 69.77 tpd VOC emissions
reduction, which meets the ROP requirements. The contingency plan
provides for the necessary 3% emission reduction.

E. Section 182(f) NOX Exemption

    Section 182(f) establishes NOX emission control
requirements for ozone nonattainment areas. It provides that these
emission control requirements, however, do not apply to an area if the
Administrator determines that NOX emission reductions would
not contribute to attainment of the ozone standard. EPA's January 2005
document, ``Guidance on Limiting Nitrogen Oxides Requirements Related
to 8-Hour Ozone Implementation,'' provides guidance for demonstrating
that further NOX reduction in an ozone nonattainment area
will not contribute to ozone attainment. The guidance provides that
three consecutive years of monitoring data showing attainment of

the standard without implementation of section 182(f) NOX
provisions is adequate to demonstrate that ``additional reductions of
oxides of nitrogen would not contribute to attainment * * *.'' CAA
section 182(f)(1)(A). As described in the guidance document, approval
of this type of NOX exemption is contingent on continued
monitored attainment of the standard.
    On March 17, 2009, Ohio submitted a request for a waiver from the
section 182(f) NOX requirements for the Cleveland-Akron-
Lorain area based on monitoring data for the years 2006-2008 showing
attainment of the 8-hour ozone standard in the area. Based on these
data, EPA is proposing to approve Ohio's request for an exemption from
the section 182(f) NOX requirements in the Cleveland-Akron-
Lorain area. Upon final approval of the NOX waiver, the Ohio
EPA will not be required to adopt and implement NOX emission
control regulations pursuant section 182(f) for Cleveland-Akron-Lorain
area to qualify for redesignation. The waiver request notwithstanding,
Ohio EPA submitted NOX RACT rules to EPA on January 3, 2008,
and has included NOX RACT in the list of contingency
measures in the maintenance plan for the area.
    Furthermore, as discussed in section III.A. of this rule, EPA
promulgated a tightened ozone standard on March 27, 2008. Ohio has
recommended that the Cleveland-Akron-Lorain area be designated
nonattainment for this standard. Although EPA is proposing to determine
that NOX reductions would not contribute to attainment of
the 1997 ozone standard because the area already attains that standard,
EPA believes that NOX reductions may contribute to
attainment of the 2008 standards. Indeed, while EPA proposes that Ohio
need not adopt NOX RACT rules as a prerequisite for
redesignation with respect to the 1997 standards, it would not prevent
EPA in the future from determining that NOX RACT rules
should be required in this area with respect to the 2008 standards.

VII. What Action Is EPA Taking?

    EPA is proposing to make a determination that the Cleveland-Akron-
Lorain area has attained the 8-hour ozone NAAQS. EPA is also proposing
to approve the maintenance plan SIP revision for the Cleveland-Akron-
Lorain area. EPA's proposed approval of the maintenance plan is based
on Ohio's demonstration that the plan meets the requirements of section
175A of the CAA, as described more fully above. After evaluating Ohio's
redesignation request, EPA has determined that it meets the
redesignation criteria set forth in section 107(d)(3)(E) of the CAA.
Therefore, EPA is proposing to approve the redesignation of the
Cleveland-Akron-Lorain area from nonattainment to attainment for the 8-
hour ozone NAAQS. The final approval of this redesignation request
would change the official designation for the Cleveland-Akron-Lorain
area from nonattainment to attainment for the 8-hour ozone standard.
EPA is also proposing to approve the 2002 base year emissions inventory
for the Cleveland-Akron-Lorain area as meeting the requirements of
section 182(a)(1) of the CAA. EPA is proposing to approve a waiver from
the section 182(f) NOX emission control requirements in the
Cleveland-Akron-Lorain area. EPA is also proposing to approve Ohio's
15% ROP plan as meeting the requirements of section 182(b)(1) of the
CAA for the 1-hour ozone standard. If EPA's determination of attainment
is finalized, pursuant to 40 CFR 51.918, certain SIP planning
requirements related to attainment (the RACM requirement of section
172(c)(1) of the CAA, the RFP and attainment demonstration requirements
of sections 172(c)(2) and (6) and 182(b)(1) of the CAA, and the
requirement for contingency measures of section 172(c)(9) of the CAA)
are not applicable to the area as long as it continues to attain the
NAAQS. (These requirements would cease to apply upon redesignation.)
Finally, EPA is proposing to approve the newly-established 2012 and
2020 MVEBs for the Cleveland-Akron-Lorain area.

VIII. Statutory and Executive Order Reviews

    Under the CAA, the Administrator is required to approve a SIP
submission that complies with the provisions of the CAA and applicable
Federal regulations. 42 U.S.C. 7410(k); 40 CFR 52.02(a). Thus, in
reviewing SIP submissions, EPA's role is to approve State choices,
provided that they meet the criteria of the CAA. Accordingly, this
action merely approves State law as meeting Federal requirements and
does not impose additional requirements beyond those imposed by State
law. For that reason, this action:
     Is not a ``significant regulatory action'' subject to
review by the Office of Management and Budget under Executive Order
12866 (58 FR 51735, October 4, 1993);
     Does not impose an information collection burden under the
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
     Is certified as not having a significant economic impact
on a substantial number of small entities under the Regulatory
Flexibility Act (5 U.S.C. 601 et seq.);
     Does not contain any unfunded mandate or significantly or
uniquely affect small governments, as described in the Unfunded
Mandates Reform Act of 1995 (Pub. L. 104-4);
     Does not have Federalism implications as specified in
Executive Order 13132 (64 FR 43255, August 10, 1999);
     Is not an economically significant regulatory action based
on health or safety risks subject to Executive Order 13045 (62 FR
19885, April 23, 1997);
     Is not a significant regulatory action subject to
Executive Order 13211 (66 FR 28355, May 22, 2001);
     Is not subject to requirements of section 12(d) of the
National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272
note) because application of those requirements would be inconsistent
with the Clean Air Act; and
     Does not provide EPA with the discretionary authority to
address, as appropriate, disproportionate human health or environmental
effects, using practicable and legally permissible methods, under
Executive Order 12898 (59 FR 7629, February 16, 1994).
    In addition, this rule does not have tribal implications as
specified by Executive Order 13175 (65 FR 67249, November 9, 2000),
because the SIP is not approved to apply in Indian country located in
the State, and EPA notes that it will not impose substantial direct
costs on tribal governments or preempt tribal law.

List of Subjects

40 CFR Part 52

    Environmental protection, Air pollution control, Intergovernmental
relations, Nitrogen oxides, Ozone, Volatile organic compounds.

40 CFR Part 81

    Air pollution control, Environmental protection, National parks,
Wilderness areas.

    Dated: June 4, 2009.
Walter W. Kovalick, Jr.,
Acting Regional Administrator, Region 5.
[FR Doc. E9-13853 Filed 6-11-09; 8:45 am]

BILLING CODE 6560-50-P