Document ID: EPA-R08-OAR-2011-0719-0012
Agency: epa
Document Type: Rule
Title: Approvals, Disapprovals and Promulgations of Air Quality Implementation Plans: Utah; Maintenance Plan for 1-Hour Ozone Standard for Salt Lake and Davis Counties
Posted Date: 2012-06-15T04:00Z

[Federal Register Volume 77, Number 116 (Friday, June 15, 2012)]
[Rules and Regulations]
[Pages 35873-35878]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-14668]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R08-OAR-2011-0719; FRL-9683-1]

Approval, Disapproval and Promulgation of Air Quality 
Implementation Plan; Utah; Maintenance Plan for the 1-Hour Ozone 
Standard for Salt Lake and Davis Counties

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: EPA is partially approving and partially disapproving State 
Implementation Plan (SIP) revisions submitted by the Governor of Utah 
on February 22, 1999. These revisions updated the State of Utah's 
maintenance plan for the 1-hour ozone standard for Salt Lake County and 
Davis County. As part of this action, EPA is also addressing certain 
actions it took in 2003 concerning such maintenance plan. This action 
is being taken under section 110 of the Clean Air Act (CAA).

DATES: This action is effective on July 16, 2012.

ADDRESSES: EPA has established a docket for this action under Docket ID 
No. EPA-R08-OAR-2011-0719. All documents in the docket are listed on 
the http://www.regulations.gov Web site. Although listed in the index, 
some information may not be publicly available, i.e., Confidential 
Business Information or other information whose disclosure is 
restricted by statute. Certain other material, such as copyrighted 
material, is not placed on the Internet and will be publicly available 
only in hard copy form. Publicly available docket materials are 
available either electronically through http://www.regulations.gov or 
in hard copy at EPA Region 8, Air Quality Planning Unit (8P-AR), 1595 
Wynkoop Street, Denver, Colorado 80202. EPA requests that if at all 
possible, you contact the person listed in the FOR FURTHER INFORMATION 
CONTACT section to schedule your inspection. The Regional Office's 
official hours of business are Monday through Friday, 8:30 to 4:30, 
excluding federal holidays.

FOR FURTHER INFORMATION CONTACT: Jody Ostendorf, Air Program, Mailcode 
8P-

[[Page 35874]]

AR, Environmental Protection Agency, Region 8, 1595 Wynkoop Street, 
Denver, Colorado 80202-1129, (303) 312-7814, or ostendorf.jody@epa.gov.

SUPPLEMENTARY INFORMATION: Information is organized as follows:

Table of Contents

I. Background of State Submittal
II. EPA's Analysis of the Revisions to the Maintenance Plan for the 
1-Hour Ozone Standard for Salt Lake County and Davis County
III. Response to Comments
IV. Final Action
V. Statutory and Executive Order Reviews

Definitions

    For the purpose of this document, we are giving meaning to certain 
words as follows:

    (i) The words or initials Act or CAA mean or refer to the Clean 
Air Act, unless the context indicates otherwise.
    (ii) The initials ACT mean or refer to Alternative Control 
Guidance Document.
    (iii) The initials CO mean or refer to carbon monoxide.
    (iv) The initials EPA, and the words ``we,'' ``us,'' or ``our,'' 
mean or refer to the Environmental Protection Agency.
    (v) The initials NAAQS mean or refer to national ambient air 
quality standards.
    (vi) The initials NOX mean or refer to nitrogen oxides.
    (vii) The initials RACT mean or refer to reasonably available 
control technology.
    (viii) The initials SIP mean or refer to State Implementation 
Plan.
    (ix) The words State or Utah mean the State of Utah, unless the 
context indicates otherwise.

I. Background of State Submittal

    Under the CAA enacted in 1970, EPA established national ambient air 
quality standards (NAAQS) for certain pervasive air pollutants, such as 
photochemical oxidant, carbon monoxide (CO), and particulate matter. 
The NAAQS represent concentration levels below which public health and 
welfare are protected. The 1970 Act also required states to adopt and 
submit SIPs to implement, maintain, and enforce the NAAQS.
    SIP revisions are required from time-to-time by the CAA to account 
for new or amended NAAQS or to meet other changed circumstances. The 
CAA was significantly amended in 1977, and under the 1977 Amendments, 
EPA promulgated attainment status designations for all areas of the 
country with respect to the NAAQS.
    The CAA requires EPA to periodically review and revise the NAAQS, 
and in 1979, EPA established a new NAAQS of 0.12 ppm for ozone, 
averaged over 1 hour. This new NAAQS replaced the oxidant standard of 
0.08 ppm. See 44 FR 8202 (February 8, 1979). Areas designated 
nonattainment for oxidant were considered to be nonattainment for ozone 
as well. Part D of CAA Title I requires special measures for areas 
designated nonattainment. In 1984, EPA approved Utah's SIP for the 1-
hour ozone standard for the Salt Lake County and Davis County 
nonattainment area (49 FR 32575).
    Congress significantly amended the CAA again in 1990. Under the 
1990 Amendments, each area of the country that was designated 
nonattainment for the 1-hour ozone NAAQS, including Salt Lake County 
and Davis County, was classified by operation of law as marginal, 
moderate, serious, severe, or extreme nonattainment depending on the 
severity of the area's air quality problem. The ozone nonattainment 
designation for Salt Lake County and Davis County continued by 
operation of law according to section 107(d)(1)(C)(i) of the CAA, as 
amended in 1990. Furthermore, the area was classified by operation of 
law as moderate for ozone under CAA section 181(a)(1).
    Under CAA section 175A, states may request redesignation of a 
nonattainment area to attainment if monitoring data showed that the 
area has met the NAAQS and certain other requirements. On July 18, 
1995, both Salt Lake and Davis Counties were found to be attaining the 
1-hour ozone standard (60 FR 36722). On July 17, 1997, EPA approved the 
State's request to redesignate Salt Lake and Davis County to attainment 
for the 1-hour ozone standard. As part of that action, EPA approved the 
State's 1-hour ozone maintenance plan (62 FR 38213).
    On July 18, 1997, EPA promulgated an 8-hour ozone NAAQS (62 FR 
38856). This standard was intended to replace the 1-hour ozone 
standard.
    On February 22, 1999, partially in response to EPA's promulgation 
of the 8-hour ozone NAAQS, but for other purposes as well, Utah 
submitted six revisions to its approved 1-hour maintenance plan. These 
revisions consisted of the following: (1) Changes to the nitrogen 
oxides (NOX) Reasonably Available Control Technology (RACT) 
provisions; (2) clarification of the transportation conformity 
provisions; (3) removal of budgets for sources other than on-road 
mobile sources; (4) changes to the trigger for contingency measures; 
(5) removal of the commitment to develop an annual inventory for point 
sources; and (6) removal of references to CO in various sections of the 
maintenance plan. EPA did not act on the revisions at the time, in part 
because of a 1999 legal challenge to the 1997 8-hour ozone NAAQS.
    On December 31, 2002, Utah submitted what it characterized as non-
substantive changes to the 1-hour ozone maintenance plan. The primary 
purpose of the changes was to revise cross-references in the 1-hour 
maintenance plan to Utah air rules whose numbering Utah had changed. 
EPA approved these changes in 2003 (68 FR 37744, June 25, 2003). 
Subsequently, EPA discovered that in the June 25, 2003 action it had 
inadvertently incorporated by reference certain changes to the 
contingency measures provision in the 1-hour ozone maintenance plan 
that were substantive in nature and had not been previously approved--
i.e., the proposed changes to the contingency measures that Utah had 
submitted on February 22, 1999. On October 15, 2003, EPA issued a 
technical correction to delete the changes to the contingency measures 
provision from the approved SIP (68 FR 59327).
    We have since discovered that Utah's December 31, 2002, submittal 
included other revisions from its February 22, 1999, submittal that 
were substantive in nature. These revisions included the (1) Changes to 
the NOX RACT provisions, (2) removal of the commitment to 
develop an annual inventory for point sources, and (3) removal of 
references to CO in some sections of the maintenance plan. Because we 
were not aware that we had inadvertently approved these revisions in 
2003, we did not issue a technical correction to reverse our approval. 
As we explain more fully below, in this action we are proposing to 
ratify our 2003 inadvertent approval of these revisions.
    On April 30, 2004, EPA designated areas of the country for the 1997 
8-hour ozone standard. EPA designated all areas in Utah, including Salt 
Lake County and Davis County, as unclassifiable/attainment for the 1997 
8-hour ozone NAAQS (69 FR 23858, April 30, 2004).
    Also, on April 30, 2004, EPA revoked the pre-existing 1-hour NAAQS 
(69 FR 23951; 40 CFR 50.9(b)). As part of this rulemaking, EPA also 
established certain requirements to prevent backsliding in those areas 
that were designated as nonattainment for the 1-hour ozone standard at 
the time of designation for the 8-hour ozone standard, or that were 
redesignated to ``attainment'' but subject to a maintenance plan, as is 
the case for Salt Lake County and Davis County. These requirements are 
codified at 40 CFR 51.905.
    In the case of Utah, one of these requirements was to submit a 
maintenance plan for the 1997 8-hour ozone standard. Also, the rule 
clarifies

[[Page 35875]]

that revisions to pre-existing 1-hour ozone maintenance plans must be 
approved by EPA and must meet the requirements of CAA sections 110(l) 
and 193. It also clarifies that EPA will not approve certain changes to 
the 1-hour ozone maintenance plan until a state in Utah's position has 
submitted and EPA has approved the maintenance plan for the 1997 8-hour 
ozone standard. We have not approved a maintenance plan for the 1997 8-
hour ozone standard for Salt Lake County or Davis County.
    On March 22, 2007, the Governor of Utah submitted a maintenance 
plan for the 1997 8-hour ozone standard for Salt Lake County and Davis 
County, and associated rule revisions. EPA is not taking action on that 
submittal at this time.\1\ Rather, EPA is only acting on the revisions 
to the maintenance plan submitted on February 22, 1999.
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    \1\ The area violated the 1997 8-hour ozone standard based on 
monitored data for 2005-2007. Thus, we have suggested that Utah 
withdraw and revise its maintenance plan for the 1997 8-hour ozone 
standard.
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II. EPA's Analysis of the Revisions to the Maintenance Plan for the 1-
Hour Ozone Standard for Salt Lake County and Davis County

    The State's February 22, 1999, submittal included six revisions to 
the 1-hour ozone maintenance plan. As noted above, the State's December 
31, 2002, submittal included some of the same revisions, and we 
inadvertently approved some of those revisions. We describe the various 
revisions and our analysis of them in the following paragraphs.
    A. Section IX.D.2.b(4)(a), ``NOX RACT.'' The State's 
1999 submittal proposed to remove from the maintenance plan a 
commitment to address new ``Alternative Control Guidance Documents 
(ACTs)'' for NOX issued by EPA. That commitment read as 
follows:

    As the EPA publishes ACT documents containing new determinations 
of what constitutes RACT for various source categories of 
NOX located within nonattainment areas for ozone, the 
State will either make a negative declaration for that source 
category in Salt Lake and Davis Counties, or will revise the Air 
Conservation Rules to reflect such determinations. This 
documentation will then be submitted to EPA for approval as a 
specific SIP revision according to the schedule included in the 
final guidance. In the absence of such an implementation schedule 
the State will act as expeditiously as practicable.

As noted, we inadvertently approved the removal of this commitment and 
accompanying introductory language in our 2003 action, in which we only 
intended to approve non-substantive changes to numbering and cross-
references.
    In this action, we are proposing to ratify our 2003 approval for 
the following reasons. First, when we approved the maintenance plan in 
1997, we simultaneously approved Utah's NOX RACT exemption 
request for major stationary sources in the 1-hour ozone nonattainment 
area, except to the extent the SIP already included specific 
NOX RACT requirements (62 FR 28403, May 23, 1997; 62 FR 
38213, July 17, 1997). The basis for our approval was that ambient air 
quality monitoring data showed that the area met the 1-hour ozone 
standard of 0.12 ppm without additional RACT measures. Thus, if the 
maintenance plan had omitted the commitment regarding future 
NOX ACTs, we would have approved it; the commitment was not 
required or necessary, and the purpose of Utah's revision to the 
maintenance plan was to align the plan with the NOX RACT 
exemption request. In light of our approval of that exemption request, 
the removal of the commitment in the maintenance plan is reasonable, 
since it is not needed to ensure maintenance of the 1-hour ozone NAAQS.
    Second, ACTs do not determine what constitutes RACT; instead they 
evaluate a range of potential control options. EPA has updated only two 
NOX ACTs since we approved the maintenance plan in 1997--one 
for cement manufacturing and one for internal combustion engines--and 
we do not read those updates as being ``new determinations of what 
constitutes RACT.'' In other words, we conclude that the commitment has 
not been triggered, even if there are sources in the maintenance area 
for which the updated ACTs would be relevant. We also conclude that the 
commitment will not be triggered in the future because EPA does not 
determine RACT in ACTs. Thus, we conclude that the removal of the 
commitment from the maintenance plan will not interfere with attainment 
of any NAAQS or any other applicable requirement of the CAA. See CAA 
section 110(l).
    B. Section IX.D.2.f(3), ``Safety Margin,'' and Table 9, ``Safety 
Margin.'' The State's 1999 submittal proposed to modify the maintenance 
plan's language regarding the use of any safety margin for 
transportation conformity determinations and to add new Table 9, which 
specifies the safety margin available for various years. For a 
maintenance plan, our regulations define safety margin as the amount by 
which the total projected emissions from all sources of a given 
pollutant are less than the total emissions that would satisfy the 
maintenance requirement. 40 CFR 93.101. The existing language in Utah's 
1-hour ozone maintenance plan uses the term ``emissions credit'' rather 
than ``safety margin.'' Also, the existing language doesn't identify 
the available safety margin. The revised language uses the term 
``safety margin,'' which is consistent with EPA's regulations, and 
indicates that the safety margin is defined in Table 9 of the 
maintenance plan. Our regulations require that the safety margin be 
explicitly quantified in the SIP before it may be used for conformity 
purposes. 40 CFR 93.124. The revised language also clarifies and 
strengthens the procedures for use of the safety margin for 
transportation or general conformity determinations. Use of all or a 
portion of the safety margin for general conformity purposes would 
require EPA approval of a SIP revision. Also, the Utah Board would need 
to approve the use of any part of the safety margin for either 
transportation or general conformity purposes. We find that the 
revisions to Section IX.D.2.f(3) and the addition of Table 9 are 
consistent with our conformity regulations and will not interfere with 
maintenance of the 1-hour ozone standard, attainment or maintenance of 
any other NAAQS, or any other CAA requirement.
    C. Section IX.D.2.f, Table 8. The State's 1999 submittal proposed 
to remove from Table 8 of the maintenance plan the budgets for sources 
other than on-road mobile sources. The previously approved maintenance 
plan contains budgets for area sources, non-road mobile sources, and 
point sources, in addition to the budgets for on-road mobile sources. 
These budgets are specified for years 1994 through 2006, 2007 (the end 
of the maintenance period), 2015, and 2020. The 2007 budgets are 
identical to the inventory values used to demonstrate maintenance in 
2007. Under our general conformity regulations, these 2007 inventory 
values for sources other than on-road mobile sources are defined as 
budgets for general conformity regardless of whether they are 
explicitly stated in the maintenance plan. We also note that the 2007 
budgets are more stringent than the 2015 and 2020 budgets (except for 
two instances in which the differences are very slight). Thus, we find 
that the removal of the 2015 and 2020 budgets for sources other than 
on-road mobile sources will make it more difficult to show general 
conformity. In this sense, removal of such budgets will make the SIP 
more stringent. In addition, we have confirmed with the State that the 
State

[[Page 35876]]

has never allowed reliance on such budgets for a general conformity 
showing. Finally, such budgets are not needed to ensure ongoing 
maintenance of the 1-hour ozone NAAQS; nor will their removal from the 
maintenance plan interfere with the attainment or maintenance of other 
NAAQS or compliance with other CAA requirements. Thus, we approve the 
removal from the maintenance plan of the budgets for area, on-road 
mobile, and point sources.
    D. Section IX.D.2.h(2), ``Determination of Contingency Action 
Level.'' The State's 1999 submittal proposed to change the maintenance 
plan's trigger for contingency measures. Instead of a defined trigger, 
the revised plan would allow the State to consider several factors in 
deciding whether contingency measures should be implemented to attain 
or maintain the 8-hour ozone standard. The revision would also redefine 
the contingency trigger date to be the date the State determines that 
one or more contingency measures should be implemented. EPA is 
disapproving these changes.
    Our consistent interpretation has been that contingency measures in 
a maintenance plan must include a pre-defined trigger, such as a 
violation of the standard. In the maintenance plan, the State must 
commit to implement one or more contingency measures within a set 
period after the violation. The revised SIP does not include a pre-
defined trigger, and, thus, we disapprove the State's revisions to 
Section IX.D.2.h(2) of the maintenance plan.\2\
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    \2\ We note that one of the potential contingency measures 
(stage two vapor recovery) has not been approved by EPA as a stand-
alone SIP measure; however it is part of the maintenance plan.
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    While 40 CFR 51.905(e) discusses modifications that may be 
implemented upon revocation of the 1-hour standard, including removal 
of the obligation to implement contingency measures upon a violation of 
the 1-hour NAAQS, the modifications only apply to areas with an 
approved maintenance plan for the 8-hour ozone standard. The State does 
not have an approved 8-hour ozone maintenance plan.
    E. Section IX.D.2.j(1), ``Tracking System for Verification of 
Emission Inventory.'' The State's 1999 submittal proposed to remove the 
maintenance plan's reference to an annual inventory for point sources. 
Specifically, section IX.D.2.j(1)(b) of the previously approved 
maintenance plan includes the State's commitment to develop an annual 
inventory for point sources in the area. A separate section of the 
previously approved maintenance plan--section IX.D.2.j(1)(a)--includes 
a commitment to update the inventory for all source categories every 
three years. The State's 1999 submittal did not propose to change this 
latter commitment.
    As noted, in our 2003 action we inadvertently approved the removal 
of the State's commitment to develop an annual inventory for point 
sources. In that 2003 action, we only intended to approve non-
substantive changes to numbering and cross-references. In this action, 
we are ratifying our 2003 approval of the State's removal of the 
commitment to develop an annual inventory for point sources. Approval 
is warranted because such an inventory is not needed to ensure 
maintenance of the 1-hour ozone NAAQS. Nor will removal of the 
commitment to submit an annual inventory for point sources interfere 
with attainment or maintenance of any other NAAQS or compliance with 
any other CAA requirement. The maintenance plan retains the requirement 
that the State update its inventory of all source categories every 
three years. This is consistent with EPA's regulatory requirements for 
inventories, and we find that a three-year frequency is adequate to 
track emissions relevant to the maintenance plan.
    F. Various Sections. The State's 1999 submittal proposed to remove 
all references to CO because CO is not a significant contributor to 
ozone formation. These references occur in a variety of locations in 
the 1-hour ozone maintenance plan. For example, the maintenance plan 
includes inventories for CO, transportation conformity budgets for CO, 
budgets for CO for sources other than on-road mobile sources, and 
references to inspection and maintenance provisions for CO.
    As noted, we inadvertently approved the removal of some of these 
references to CO in our 2003 action, in which we only intended to 
approve non-substantive changes to numbering and cross-references. In 
this action, we are ratifying our 2003 approval of the State's removal 
of some of the references to CO and approving the State's removal of 
all other references to CO in the 1-hour ozone maintenance plan.
    First, we agree with the State that CO is not a significant 
contributor to ozone formation. Thus, there is no need for CO measures 
to ensure maintenance of the 1-hour ozone standard or any other ozone 
standard. Second, the removal of the CO measures in the 1-hour ozone 
maintenance plan will not interfere with attainment or maintenance of 
any other NAAQS or compliance with any other CAA requirement. In 
particular, there are no CO nonattainment areas in Utah. Within Salt 
Lake and Davis Counties, the only maintenance area for CO is Salt Lake 
City. It has its own maintenance plan, with its own motor vehicle 
emissions budgets and CO measures. In addition, recent monitored 
ambient CO values for Salt Lake City and other areas in Utah are well 
below the level of the CO NAAQS.
    Thus, the removal of CO measures in the 1-hour ozone maintenance 
plan is consistent with continued maintenance of the 1-hour ozone NAAQS 
and with CAA section 110(l).
    G. Miscellaneous. As noted above, we previously approved revisions 
to the 1-hour ozone maintenance plan that the State submitted on 
December 31, 2002, a date that post-dates the date of the revisions we 
are proposing to act on today. In particular, in our June 25, 2003 
action on the December 31, 2002 submittal, we approved Utah's updating 
of references in the 1-hour ozone maintenance plan to Utah air rules 
whose numbering Utah had changed after it submitted revisions to the 1-
hour ozone maintenance plan in 1999. See 68 FR 37744. We are retaining 
the updated references to Utah air rules as we approved them in our 
June 25, 2003 action. We are not replacing these updated references 
with the older references contained in the 1-hour ozone maintenance 
plan that Utah submitted in 1999.

III. Response to Comments

    We received one comment letter on our April 10, 2012 notice of 
proposed rulemaking, from the Utah Division of Air Quality (UDAQ). 
Below we provide a summary of, and our response to, the State's 
comment.
    Comment: UDAQ comments on EPA's proposed disapproval of Utah's 
revisions to the contingency measure provisions in the 1-hour ozone 
maintenance plan. UDAQ recommends that EPA approve the revisions. In 
the alternative, UDAQ asks that if partial disapproval is deemed 
necessary, EPA indicated that it will not require a revision of the 
plan or initiate work on a Federal Implementation Plan. UDAQ reasons 
that it would not be an acceptable use of limited state or EPA 
resources to prepare a revised plan for the 1-hour ozone standard, 
which has not been violated in the area since 1992 and which was 
revoked in 2005. UDAQ also indicates that ozone levels have continued 
to drop and that Salt Lake and Davis Counties were declared attainment 
areas for both the 1997 and 2008 ozone NAAQS. UDAQ asserts that it is 
not possible for Utah to revise the

[[Page 35877]]

1-hour ozone maintenance plan because any new regulatory requirements 
for ozone in Utah must reflect the current ozone standard, not the 
standard that was in effect 15 years ago and has been revoked in Utah. 
UDAQ also suggests that the contingency measure language in the 
federally-approved SIP is not practically enforceable by EPA. UDAQ 
states that it submitted a new maintenance plan in 2007 that addresses 
the 1997 ozone NAAQS and that contains an automatic trigger for 
contingency measures and a different set of contingency measures. UDAQ 
notes that EPA has not acted on the 2007 maintenance plan.
    Response: The comments do not provide a basis for us to reverse our 
proposed disapproval of Utah's revisions to the contingency measure 
provisions. As noted in our April 10, 2012 proposal (77 FR 21515) and 
in section II, above, EPA's consistent interpretation has been that 
contingency measures in a maintenance plan must include a pre-defined 
trigger, such as a violation of the standard. In the maintenance plan, 
the State must commit to implement one or more contingency measures 
within a set period after the violation. The revised maintenance plan 
does not include a pre-defined trigger. Therefore, we cannot approve 
the State's revision.
    This disapproval does not trigger a FIP obligation because the 
approved SIP remains in place and, contrary to UDAQ's assertion, 
remains federally enforceable. This is a well-established principle 
concerning SIPs--once approved, their provisions remain federally 
enforceable unless and until EPA approves a revision. As a practical 
matter, this may have little significance because Utah has been 
attaining the 1-hour ozone standard for many years and the relevant 
areas were designated unclassifiable/attainment for the 1997 and 2008 
ozone standards. Thus, a violation of the 1-hour standard is unlikely. 
Nonetheless, as noted in our proposal and in section I above, the 
revocation of the 1-hour ozone standard did not automatically eliminate 
existing 1-hour ozone plan provisions from the SIP. Any changes require 
EPA approval, and EPA will not approve the removal of contingency 
measures for the 1-hour ozone standard until an area has an approved 
maintenance plan for the 8-hour ozone NAAQS. 77 FR 21514, 21515; 40 CFR 
51.905(e). We intend to address Utah's 2007 maintenance plan for the 
1997 ozone standard and any plans for the 2008 standard in separate 
actions, as necessary.\3\
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    \3\ The area violated the 1997 8-hour ozone standard based on 
monitored data for 2005-2007. Thus, we have previously suggested 
that Utah may want to withdraw and revise its maintenance plan for 
the 1997 8-hour ozone standard.
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IV. Final Action

    For the reasons described above, we are taking the following 
actions concerning Utah's revisions to the 1-hour ozone maintenance 
plan for Salt Lake and Davis Counties:\4\
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    \4\ All section and table references are to sections and tables 
in the 1-hour ozone maintenance plan for Salt Lake and Davis 
Counties.
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    A. We are ratifying our June 25, 2003 approval (at 68 FR 37744) of 
the following revisions to the 1-hour ozone maintenance plan that Utah 
submitted on December 31, 2002:
    1. The revisions to Section IX.D.2.b(4)(a), ``NOx RACT;''
    2. The revisions to subsection IX.D.2.j(1)(b) of Section 
IX.D.2.j(1), ``Tracking System for Verification of Emission 
Inventory;'' and
    3. The removal of references to CO in the sections of the plan that 
we approved on June 25, 2003.
    B. We are approving the revisions to the 1-hour ozone maintenance 
plan that Utah submitted on February 22, 1999 except for the following:
    1. The revisions to Section IX.D.2.h(2), ``Determination of 
Contingency Action Level,'' which EPA is disapproving;
    2. The revisions to the remainder of Section IX.D.2.h, which were 
superseded by the revisions to the plan that EPA approved on June 25, 
2003;
    3. The revisions to Sections IX.D.2.b, IX.D.2.d(1)(a), IX.D.2.e(1), 
IX.D.2.f(1)(a), IX.D.2.i, and IX.D.2.j, which were superseded by the 
revisions to the plan that EPA approved on June 25, 2003.

V. Statutory and Executive Order Reviews

    Under the CAA, the Administrator is required to approve a SIP 
submission that complies with the provisions of the Act and applicable 
Federal regulations (42 U.S.C. 7410(k), 40 CFR 52.02(a)). Thus, in 
reviewing SIP submissions, EPA's role is to approve state choices, 
provided that they meet the criteria of the CAA. Accordingly, this 
final action merely approves some state law as meeting Federal 
requirements and disapproves other state law because it does not meet 
Federal requirements; this action 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 CAA; and,
     Does not provide EPA with the discretionary authority to 
address, as appropriate, disproportionate human health or environmental 
effects, using practicable and legally permissible methods, under 
Executive Order 12898 (59 FR 7629, February 16, 1994).

In addition, this rule does not have Tribal implications as specified 
by Executive Order 13175 (65 FR 67249, November 9, 2000), because the 
SIP is not approved to apply in Indian country located in the State, 
and EPA notes that it will not impose substantial direct costs on 
Tribal governments or preempt Tribal law.

List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Carbon monoxide, 
Incorporation by reference, Intergovernmental relations, Nitrogen 
dioxide, Ozone, Reporting and recordkeeping requirements, Volatile 
organic compounds.

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

    Dated: May 24, 2012.
James B. Martin,
Regional Administrator, Region 8.

    Part 52, Chapter I, Title 40 of the Code of Federal Regulations is 
amended as follows:

[[Page 35878]]

PART 52--[AMENDED]

0
1. The authority citation for part 52 continues to read as follows:

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

Subpart TT--Utah

0
2. Amend Sec.  52.2320 by adding paragraph (c)(70) to read as follows:

Sec.  52.2320  Identification of plan.

* * * * *
    (c) * * *
    (70) On February 22, 1999, the Governor submitted revisions to the 
Ozone Maintenance Provisions for Salt Lake and Davis Counties, Section 
IX, Part D.2 of the Utah State Implementation Plan (SIP). EPA is 
approving the revisions except for the following: the revisions to 
Section IX.D.2.h(2) of the SIP, ``Determination of Contingency Action 
Level,'' which EPA is disapproving; the revisions to the remainder of 
Section IX.D.2.h, which were superseded by revisions to the SIP that 
EPA approved at Sec.  52.2320(c)(56); and the revisions to Sections 
IX.D.2.b, IX.D.2.d(1)(a), IX.D.2.e(1), IX.D.2.f(1)(a), IX.D.2.i, and 
IX.D.2.j, which were superseded by revisions to the SIP that EPA 
approved at Sec.  52.2320(c)(56).
    (i) [Reserved]
    (ii) Additional material.
    (A) Ozone Maintenance Provisions for Salt Lake and Davis Counties, 
Section IX, Part D.2 that was adopted by the Air Quality Board on June 
3, 1998 and submitted by the Governor on February 22, 1999.

[FR Doc. 2012-14668 Filed 6-14-12; 8:45 am]
BILLING CODE 6560-50-P