Approval and Promulgation of Implementation Plans; Oklahoma; State Implementation Plan Revisions for Interstate Transport of Pollution, Prevention of Significant Deterioration, Nonattainment New Source Review, Source Registration and Emissions Reporting and Rules of Practice and Procedure, 72695-72705 [2010-29398]

Agencies

• ENVIRONMENTAL PROTECTION AGENCY

[Federal Register Volume 75, Number 227 (Friday, November 26, 2010)]
[Rules and Regulations]
[Pages 72695-72705]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2010-29398]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R06-OAR-2007-0314; FRL-9230-2]


Approval and Promulgation of Implementation Plans; Oklahoma; 
State Implementation Plan Revisions for Interstate Transport of 
Pollution, Prevention of Significant Deterioration, Nonattainment New 
Source Review, Source Registration and Emissions Reporting and Rules of 
Practice and Procedure

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: EPA is approving part of a State Implementation Plan (SIP) 
revision submitted by the State of Oklahoma that demonstrates that 
adequate provisions are in place to prohibit Oklahoma air emissions 
from interfering with Prevention of Significant Deterioration (PSD) 
measures required in the SIP of any other state for the 1997 8-hour 
ozone National Ambient Air Quality Standards (NAAQS) and the 1997 fine 
particulate matter (PM2.5) NAAQS. Specifically, EPA is 
approving the Oklahoma Interstate Transport SIP provisions that address 
the requirement of section 110(a)(2)(D)(i)(II) that emissions from 
sources in Oklahoma do not interfere with measures required in the SIP 
of any other state under part C of the CAA to prevent ``significant 
deterioration of air quality.'' EPA is also approving portions of 
revisions to the Oklahoma SIP submitted on February 14, 2002, and June 
24, 2010. The February 14, 2002, revisions we are approving relate to 
PSD and Nonattainment New Source Review (NNSR) for major sources, 
source registration and emissions reporting and other rules of practice 
and procedure (except for revisions relating to minor sources). The 
June 24, 2010, revisions we are approving include nitrogen oxides 
(NOX) as an ozone precursor in Oklahoma's PSD SIP for 
purposes of the 1997 8-hour ozone NAAQS. This action is being taken 
under section 110 and parts C and D of the Clean Air Act (CAA).

DATES: This final rule is effective on December 27, 2010.

ADDRESSES: EPA has established a docket for this action under Docket 
Identification No. EPA-R06-OAR-2007-0314. All documents in the docket 
are listed at www.regulations.gov. Although listed in the index, some 
information is not publicly available, e.g., 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 https://www.regulations.gov or in hard copy at 
the Air Planning Section (6PD-L), Environmental Protection Agency, 1445 
Ross Avenue, Suite 700, Dallas, Texas 75202-2733. The file will be made 
available by appointment for public inspection in the Region 6 Freedom 
of Information Act (FOIA) Review Room between the hours of 8:30 a.m. 
and 4:30 p.m. weekdays except for legal holidays. Contact the person 
listed in the FOR FURTHER INFORMATION CONTACT paragraph below or Mr. 
Bill Deese at 214-665-7253 to make an appointment. If possible, please 
make the appointment at least two working days in advance of your 
visit. There will be a 15 cent per page fee for making photocopies of 
documents. On the day of the visit, please check in at the EPA Region 6 
reception area at 1445 Ross Avenue, Suite 700, Dallas, Texas.

FOR FURTHER INFORMATION CONTACT: Carl Young, Air Planning Section (6PD-
L), Environmental Protection Agency, Region 6, 1445 Ross Avenue, Suite 
700, Dallas, Texas 75202-2733, telephone (214) 665-6645; fax number 
(214) 665-

[[Page 72696]]

7263; e-mail address young.carl@epa.gov. For further information 
regarding PSD or NNSR, contact: Rick Barrett or Dinesh Senghani, Air 
Permits Section (6PD-R), Environmental Protection Agency, Region 6, 
1445 Ross Avenue, Suite 700, Dallas, Texas 75202-2733, telephone (214) 
665-7227 or (214) 665-7221; fax number (214) 665-7263; e-mail address 
barrett.richard@epa.gov or senghani.dinesh@epa.gov.

SUPPLEMENTARY INFORMATION: Throughout this document wherever ``we,'' 
``us,'' or ``our'' is used, we mean the EPA.

Outline

I. Final Action
    A. Oklahoma Demonstration of Adequate Provisions Prohibiting 
Emissions That Interfere With Prevention of Significant 
Deterioration Measures in Other States
    B. Oklahoma SIP Revisions Submitted on February 14, 2002 and 
June 24, 2010
II. What is the background for this action?
III. What comments did EPA receive and how has EPA responded to 
them?
IV. Statutory and Executive Order Reviews

I. Final Action

A. Oklahoma Demonstration of Adequate Provisions Prohibiting Emissions 
That Interfere With Prevention of Significant Deterioration Measures in 
Other States

    We are approving a submission from the State of Oklahoma 
demonstrating that the State has adequately addressed one of the 
required elements of CAA section 110(a)(2)(D)(i), the element that 
requires that the State Implementation Plan prohibit air pollutant 
emissions from sources within a state from interfering with measures 
required to prevent significant deterioration of air quality in any 
other state. We have determined that emissions from sources in Oklahoma 
do not interfere with measures to prevent significant deterioration of 
air quality in any other state for the 1997 8-hour ozone NAAQS or of 
the 1997 PM2.5 NAAQS (CAA section 110(a)(2)(D)(i)(II)).

B. Oklahoma SIP Revisions Submitted on February 14, 2002 and June 24, 
2010

    We are also approving portions of revisions to the Oklahoma SIP 
submitted by the State on February 14, 2002, and June 24, 2010. The 
February 14, 2002, revisions we are approving are the portions related 
to: (1) PSD for major stationary sources and major modifications; (2) 
NNSR permitting requirements for major stationary sources and major 
modifications as a revision to the Oklahoma NNSR SIP; (3) source 
registration and emissions reporting as part of the Oklahoma Major NSR 
SIP; and (4) other rules of practice and procedure as part of the 
Oklahoma Major NSR SIP.\1\ The June 24, 2010, revisions we are 
approving address NOX as an ozone precursor in Oklahoma's 
PSD SIP for purposes of the 1997 8-hour ozone NAAQS.
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    \1\ Because we are only acting on the revisions for major 
sources, the previously approved SIP for minor sources remains in 
effect.
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    In this action, we are not addressing the elements of section 
110(a)(2)(D)(i) for the 1997 8-hour ozone and PM2.5 NAAQS, 
that pertain to prohibiting air pollutant emissions from within 
Oklahoma from: (1) Significantly contributing to nonattainment in any 
other state, (2) interfering with maintenance of the relevant NAAQS in 
any other state, and (3) interfering with measures required to protect 
visibility in any other state. We are also not addressing: (1) SIP 
revisions submitted on February 14, 2002, for Minor NSR SIP purposes, 
and (2) other SIP revisions submitted on June 24, 2010, that do not 
address NOX as an ozone precursor.
    More information on the SIP revisions we are approving can be found 
in our proposal published in the September 17, 2010 Federal Register 
(75 FR 56923). We are approving the SIP revisions pursuant to section 
110 and parts C and D of the CAA.

II. What is the background for this action?

    The background for today's actions is discussed in detail in our 
September 17, 2010, proposal to approve revisions to the Oklahoma SIP 
(75 FR 56923). In it, we proposed to approve revisions to the Oklahoma 
SIP related to: (1) Oklahoma's demonstration that adequate provisions 
are in place to prohibit Oklahoma air emissions from adversely 
affecting another state's PSD measures through interstate transport for 
the 1997 8-hour ozone NAAQS or standards and the 1997 PM2.5 
NAAQS, and (2) Oklahoma Administrative Code (OAC) revisions submitted 
on February 14, 2002, and June 24, 2010.

III. What comments did EPA receive and how has EPA responded to them?

    We received comment letters from WildEarth Guardians and the Sierra 
Club on our proposed rulemaking. The comment letters are available for 
review in the electronic docket for this rulemaking at the 
regulations.gov Web site (Docket No. EPA-R06-OAR-2007-0314). Our 
responses to the comments are below.
    Comment: One commenter provided comments on air quality models to 
be used to analyze and assess ozone and PM2.5 impacts in the 
Oklahoma PSD program. The commenter stated that the CAA requires PSD 
regulations that specify with reasonable particularity each air quality 
model or models to be used under specified sets of conditions.\2\ The 
commenter continued that EPA promulgated the PSD regulations in 1980, 
which included specific regulations to satisfy the requirements of the 
CAA. These PSD regulations included a requirement that a major source 
or major modification of a major source of air pollution cannot be 
constructed unless the owner or operator of such facility demonstrates, 
as required pursuant to section 42 U.S.C. 7410(j), that emissions from 
construction or operation of such facility will not cause, or 
contribute to, air pollution in excess of any (A) maximum allowable 
increase or maximum allowable concentration for any pollutant in any 
area to which this part applies more than one time per year, (B) 
national ambient air quality standard in any air quality control 
region. The commenter indicated that EPA promulgated 40 CFR 52.21(k) & 
(l)(2008) to carry out the obligations of 42 U.S.C. 7475(e)(3)(D) and 
EPA incorporated by reference its Guideline on Air Quality Models as 
Appendix W into its permitting regulations.3 4 The commenter 
concluded that EPA's

[[Page 72697]]

Appendix W titled ``Guideline on Air Quality Modeling'' is a 
regulation.
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    \2\ Commenter cited 42 U.S.C. 7475(a)(3), 42 U.S.C. 7475(e)(3).
    \3\ Appendix W is 40 CFR part 51, Appendix W--Guideline on Air 
Quality Models.
    \4\ Commenter cited 43 FR 26380, 26398 (June 19, 1978). ``(k) 
Source impact analysis. The owner or operator of the proposed source 
or modification shall demonstrate that allowable emission increases 
from the proposed source or modification, in conjunction with all 
other applicable emissions increases or reductions (including 
secondary emissions), would not cause or contribute to air pollution 
in violation of: (1) Any national ambient air quality standard in 
any air quality control region; or (2) Any applicable maximum 
allowable increase over the baseline concentration [a.k.a. 
increment] in any area.'' And ``(l) Air quality models. (1) All 
estimates of ambient concentrations required under this paragraph 
shall be based on applicable air quality models, data bases, and 
other requirements specified in appendix W of part 51 of this 
chapter (Guideline on Air Quality Models). (2) Where an air quality 
model specified in appendix W of part 51 of this chapter (Guideline 
on Air Quality Models) is inappropriate, the model may be modified 
or another model substituted. Such a modification or substitution of 
a model may be made on a case-by-case basis or, where appropriate, 
on a generic basis for a specific state program. Written approval of 
the Administrator must be obtained for any modification or 
substitution. In addition, use of a modified or substituted model 
must be subject to notice and opportunity for public comment under 
procedures developed in accordance with paragraph (q) of this 
section.''
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    The commenter indicated that EPA's regulations (including Appendix 
W) do not recommend which models must be used in the PSD program for 
the 1997 8-hour or PM2.5 NAAQS as required by 42 U.S.C. 
7475(a)(3) to ensure proper implementation of this critical PSD 
element.\5\ The commenter cited 40 CFR 51, Appendix W, Section 5.2.1.c 
(ozone) and 5.2.2.1.c (PM2.5) that indicate that for single 
source analysis, such as what would be conducted for PSD, the choice of 
methods used to assess the impact of an individual source depends on 
the nature of the source and its emissions and the model users should 
consult with the (EPA) Regional Office to determine the most suitable 
approach on a case-by-case basis. The commenter alleges that this 
provision is cited by permitting agencies for the proposition that 
there is no model available and major sources of ozone precursors and 
PM2.5 obtain their PSD permits without demonstrating that 
they will not cause or contribute to a violation of the 1997 8-hour 
NAAQS using any modeling method.
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    \5\ Commenter cited U.S.C. 7475(a)(3) indicating that it 
requires that within six months after August 7, 1977, EPA promulgate 
regulations respecting which models should be used for the analysis 
required under this subsection. The commenter also stated that 42 
U.S.C. 7475(a)(3)(D) requires EPA to specify with reasonable 
particularity each air quality model or models to be used under 
specified sets of conditions for purposes of this part and that EPA 
can make unique determinations based on meteorology or terrain 
issues.
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    The commenter asserted that EPA has not promulgated a guideline 
model for analysis of ozone precursors for ozone impacts or for 
PM2.5 ambient analysis in Appendix W. The commenter noted 
that Appendix A to Appendix W discusses potential models to be used, 
but no actual recommendation has been made as to which model or models 
must be utilized to assure that new or modified major stationary 
sources in Oklahoma do not cause or contribute to a violation of the 
1997 8-hour ozone or PM2.5 NAAQS. The commenter asserts that 
EPA was obligated to resolve this dilemma through its Proposed Rule to 
ensure that Oklahoma's SIP complies with the statutory requirements of 
the Clean Air Act. The commenter continues that EPA's PSD regulations, 
40 CFR part 51, Appendix W, and the Oklahoma SIP do not specify with 
reasonable particularity the model or models that will be used to 
ensure this outcome. The commenter noted that in a petition filed with 
the EPA in July of this year, the Sierra Club called on the EPA to 
require that photochemical grid models be used to demonstrate that a 
source will not cause or contribute to a violation of the 1997 8-hour 
Ozone or PM2.5 NAAQS.\6\ The petition noted that EPA and 
states in some respects have already used these models to ensure that 
individual sources do not cause or contribute to a violation of the 
NAAQS. Furthermore, these models have the advantage of ensuring that 
the impact of ozone and PM2.5 precursors are taken into 
account to ensure that new or modified major stationary sources do not 
cause or contribute to NAAQS violations.
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    \6\ Commenter included two possible photochemical grid models as 
examples: Comprehensive Air Quality Model with Extensions (CAMx) and 
Community Multiscale Air Quality modeling system (CMAQ).
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    The commenter concluded that EPA should not approve this SIP until 
EPA specifies with reasonable particularly the model or models that 
must be used to ensure that new or modified major stationary sources in 
Oklahoma do not cause or contribute to violations of the 1997 8-hour 
Ozone and PM2.5 NAAQS in accordance with 40 CFR 52.21(k) and 
the Oklahoma SIP, and the Agency has no basis for concluding that the 
Proposed Rule complies with the Clean Air Act, including the 
requirements of Section 110(a)(2)(D)(i)(II) and Section 110(l).
    Response: EPA's PSD regulations are found at 40 CFR 51.166 and 
52.21. PSD requirements for SIPs are found in 40 CFR 51.166. Similar 
PSD requirements for SIPs which have been disapproved and for SIPs 
incorporating EPA's regulations by reference are found in 40 CFR 52.21. 
These regulations do require an ambient impact analysis for ozone and 
PM2.5 (40 CFR 51.166(k), (l) and (m) and 40 CFR 52.21(k), 
(l) and (m)). The regulations at 40 CFR 51.166(l) state that for air 
quality models the SIP shall provide for procedures which specify that:
    ``(1) All applications of air quality modeling involved in this 
subpart shall be based on the applicable models, data bases, and other 
requirements specified in appendix W of this part (Guideline on Air 
Quality Models).
    (2) Where an air quality model specified in appendix W of this part 
(Guideline on Air Quality Models) is inappropriate, the model may be 
modified or another model substituted. Such a modification or 
substitution of a model may be made on a case-by-case basis or, where 
appropriate, on a generic basis for a specific State program. Written 
approval of the Administrator must be obtained for any modification or 
substitution. In addition, use of a modified or substituted model must 
be subject to notice and opportunity for public comment under 
procedures set forth in Sec.  51.102.''
    We are approving in the SIP a revision to OAC 252:100-8-35(e) 
submitted on February 14, 2002, that meets the requirements of 40 CFR 
51.166(l). OAC 252:100-8-35(e) states: ``(e) Air quality models.
    (1) Any air quality dispersion modeling that is required under Part 
7 of this Subchapter for estimates of ambient concentrations shall be 
based on the applicable air quality models, data bases and other 
requirements specified in the Guidelines on Air Quality Models, OAQPS 
1.2-080, U.S. Environmental Protection Agency, April, 1978 and 
subsequent revisions.
    (2) Where an air quality impact model specified in the Guidelines 
on Air Quality Models is inappropriate, the model may be modified or 
another model substituted, as approved by the Executive Director. 
Methods like those outlined in the Workbook for the Comparison of Air 
Quality Models, U.S. Environmental Protection Agency, April, 1977 and 
subsequent revisions, can be used to determine the comparability of air 
quality models.''
    Additionally, we are approving revisions to OAC 252:100-8-31 and 8-
33 submitted on February 14, 2002, and June 24, 2010, which result in 
the Oklahoma SIP at OAC 252:100-8-35 requiring air quality impacts 
analysis for ozone consistent with 40 CFR 51.166.(m).\7\
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    \7\ In addition to the requirements of 40 CFR 51.166(m) 40 CFR 
52.21(i)(xi)(5)(i) indicates that ``No de minimis air quality level 
is provided for ozone.'' However, any net emissions increase of 100 
tons per year or more of volatile organic compounds or nitrogen 
oxides subject to PSD would be required to perform an ambient impact 
analysis, including the gathering of ambient air quality data. 40 
CFR 51.165 and 51.166 also require permitting authorities to 
demonstrate that the proposed source will not cause or contribute to 
violation of the ozone NAAQS per 40 CFR 52.21(k).
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    The commenter is correct in the statement that EPA has not selected 
a single preferred model in Appendix A to Appendix W for conducting 
ozone impacts. Because of the complexity of modeling ozone and 
PM2.5 as described below, we do not believe a model is 
available that is appropriate in all situations to model these 
pollutants. Therefore, we continue to believe it is appropriate for 
States to work with EPA Regional Offices as described in Appendix W to 
determine the appropriate approach to modeling these pollutants. As 
pointed out by the commenter, Oklahoma's SIP requires a demonstration 
that emissions from a new major source or a major modification of a 
major source will not result in an unacceptable impact to

[[Page 72698]]

ambient air. Furthermore, as described below, Oklahoma has followed 
Appendix W for new potential sources of ozone and PM2.5.
    With regard to ozone, a proposed emission source's emissions 
impacts are dependent upon local meteorology and pollution levels in 
the surrounding atmosphere. Ozone is formed from chemical reactions in 
the atmosphere. The level of impact a new source can have on ozone 
levels is dependent, in part, upon the pollutants already in the 
surrounding atmosphere with which emissions from the new source can 
react. In addition, meteorological factors such as wind speed, 
temperature, wind direction and atmospheric stability are also 
important. The most sophisticated analyses try to account for 
meteorology and this interaction with emissions from surrounding 
sources. EPA has not indentified an established modeling system that 
would fit all situations and take into account all of the additional 
local information about sources and meteorology. As the commenter 
indicated the most sophisticated modeling analyses usually add a source 
into an existing modeling system and model the impact change from the 
source using a photochemical grid model, such as CAMx or CMAQ. There 
are also reactive plume models, however, that may be appropriate. We 
have approved the use of plume models in some instances, but these 
models are not always appropriate because of the difficulty in 
obtaining the background information to make an appropriate assessment 
of the photochemistry and meteorology impacts.
    EPA has not selected a specific model for conducting an ozone 
analysis as it depends upon the details about the modeling systems 
available and if they are appropriate for assessing the proposed source 
impacts. Considering that a full development of a photochemical 
modeling system can be on the order of $100,000-250,000 or more, it is 
not generally appropriate to require a source to develop an entire 
photochemical modeling system just to evaluate its impacts. However, 
when an existing photochemical modeling system is available, it should 
be evaluated for potential use. More often now than 10 or 15 years ago, 
a photochemical modeling system may be available that covers the 
geographic area of concern, but even if photochemical modeling is 
available, it must be evaluated to determine its appropriateness for 
conducting an impact analysis. Things to consider in evaluating 
appropriateness of a photochemical modeling system include meteorology, 
year of emissions projections, model performance issues in the area of 
concern or in areas that might impact projections in the area of 
concern, etc. Therefore, even if photochemical modeling systems exist, 
they may be deemed inappropriate for use in evaluating a proposed 
source for ozone modeling. Because of these scientific issues EPA has 
not issued a ``Preferred Model'' for conducting source impacts on ozone 
to Appendix A of Appendix W.
    In the specific situation of Oklahoma, the state conducted 
photochemical modeling as part of an Early Action Compact in the 2002-
2004 timeframe. This photochemical modeling system was developed 
specifically for Oklahoma with a 4-kilometer fine grid and includes a 
base year emission inventory of 1999 and future year emission inventory 
projection of 2007. Oklahoma has been conducting sensitivity runs using 
their photochemical modeling system to evaluate the impacts of proposed 
sources of NOX and VOC as part of their review of permit 
applications.\8\ Oklahoma proposed and EPA Region 6 agreed that 
Oklahoma's photochemical modeling system was acceptable and it would be 
an appropriate tool for assessing ozone impacts when it is required. 
Oklahoma has been following this procedure for over 5 years for sources 
of emissions that were greater than 365 tons per year, and usually 
models anything greater than 200 tons per year of NOX or 
VOCs. Based on previous modeling, EPA Region 6 and Oklahoma determined 
that sources with less annual emissions would not likely show an impact 
large enough to be a concern.
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    \8\ Oklahoma Department of Environmental Quality Air Dispersion 
Modeling Guidelines, January 2008, Page 3: ``Until EPA publishes 
guidelines for compliance for individual sources, large sources will 
be included in available photochemical modeling datasets and will be 
modeled with the Comprehensive Air Quality Model with extensions 
(CAMx) to assess impacts and demonstrate compliance with the 
standard.''
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    It is also difficult to specify a preferred model for 
PM2.5 for similar reasons as described for ozone. While some 
PM2.5 is directly emitted from sources (primary), depending 
on the source type, PM2.5 is also formed by emissions 
condensing outside the stack or through chemical reactions with 
pollutants already in the atmosphere (secondary). EPA promulgated 
AERMOD as an acceptable model for performing near-field analyses of 
primary pollutants.\9\ EPA considers that AERMOD is an acceptable model 
for estimating impacts of primary PM2.5, but EPA has not 
developed a near-field model that includes the necessary chemistry 
algorithms to estimate secondary or condensible emission impacts in an 
ambient air analysis. To address this issue, EPA issued modeling 
guidance in 2010 to give further direction on how to conduct an ambient 
impact analyses for PM2.5.10 11 This guidance 
provided that, with appropriate selection of a background monitor 
value, much of the PM2.5 secondary and condensibles could be 
accounted for using monitoring data. In the case of a large source of 
secondary PM2.5 or condensibles, additional modeling may be 
appropriate using other models for the secondary component, such as a 
photochemical model. Oklahoma has agreed to review proposed source 
modeling in accordance with EPA modeling guidance for PM2.5 
and to either model coarse particulate matter (PM10) with a 
demonstration that the modeling is adequate as a surrogate for 
PM2.5 impacts or to model PM2.5 impacts directly 
using the AERMOD model in accordance with 40 CFR Appendix W and EPA's 
recent PM2.5 modeling guidance.\12\
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    \9\ Appendix A to Appendix W of 40 CFR 51--Summaries of 
Preferred Air Quality Models, Part A-1.
    \10\ EPA memorandum, dated March 23, 2010, ``Modeling Procedures 
for Demonstrating Compliance with PM2.5 NAAQS'', from 
Stephen D. Page, Director of Office of Air Quality Planning and 
Standards.
    \11\ EPA memorandum, dated February 26, 2010, ``Model 
Clearinghouse Review of Modeling Procedures for Demonstrating 
Compliance with PM2.5 NAAQS'', from Tyler Fox, Leader of 
Air Quality Modeling Group of the Office of Air Quality Planning and 
Standards.
    \12\ July 29, 2010, letter from Eddie Terrill, Director, Air 
Quality Division, Oklahoma Department of Environmental Quality to 
Thomas Diggs, Associate Director for Air Programs, EPA Region 6.
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    As the commenter pointed out, Appendix W Sections 5.2.1.c and 
5.2.2.1.c stipulate that the EPA Regional Office has the authority to 
work with the state/local permitting authorities on a case-by-case 
basis in determining the adequate modeling approach for assessing ozone 
and PM2.5 impacts. Due to the complexity of modeling Ozone 
and PM2.5, we believe this is an appropriate approach rather 
than specifying a preferred model that would not be appropriate in all 
circumstances. The Oklahoma SIP requires sources follow the Guideline 
on Air Quality Models (40 CFR part 51, Appendix W) in performing 
modeling to ensure that new or modified major stationary sources in 
Oklahoma do not cause or contribute to violations of the Ozone and 
PM2.5 NAAQS in Oklahoma or other States.

[[Page 72699]]

    In conclusion, for the reasons stated above it is difficult to 
identify and implement a national modeling tool. EPA has a standard 
approach in its PSD SIP and FIP rules of not mandating the use of a 
particular modeling tool, instead treating the choice of a particular 
modeling tool for ozone and for non-primary PM2.5 as 
circumstance-dependent. For primary PM2.5 ambient air 
analysis the guideline model is AERMOD. EPA then determines whether the 
State's SIP revision submittal meets the PSD SIP requirements. Oklahoma 
has an EPA-approved PSD SIP that meets the EPA PSD SIP requirements. 
EPA guidance provides that a State does not interfere with the PSD 
program of other states if its own PSD program meets Federal 
requirements. Emissions from sources within Oklahoma are not 
interfering with the PSD of other states because the State of Oklahoma 
meets the Federal requirements for PSD. Therefore, we believe that the 
Oklahoma SIP has measures in place to insure that emissions from 
Oklahoma do not interfere with PSD programs in other States.
    Comment: A comment was received that EPA cannot approve the portion 
of the Oklahoma SIP which requires an ambient impact analysis, 
including the gathering of air quality data, for any net emissions 
increase of 100 tons per year or more of NOX subject to PSD, 
(OAC 252:100-8-33(c)), and cannot conclude that the Oklahoma SIP does 
not interfere with PSD measures required in any other State. The 
commenter stated that we propose to approve Oklahoma's finding that, 
unless a source emits 100 tons/year of NOX or VOCs an 
analysis of impacts to ambient ozone concentrations is not required, 
that there is no support for this significance threshold, and it 
appears contrary to the Clean Air Act. The commenter further discussed 
our citation of 40 CFR 51.166(i)(5)(i)(e), stating that the regulation 
does not state that an analysis of ambient ozone impacts is not 
required if NOX or VOC emissions are below the 100 tons/year 
threshold, (as noted by the statement ``No de minimis air quality level 
is provided for ozone''), but rather only states that such analysis is 
generally required if emissions are higher than the 100 ton/year 
threshold.
    Response: We disagree that we cannot (1) approve the revision to 
OAC 252:100-8-33 and (2) conclude that the Oklahoma SIP does not 
interfere with PSD measures required in any other State. We believe the 
commenter is mistaken in what the Oklahoma SIP requires. Under the 
Oklahoma SIP revisions we are approving, a new major source with a 
significant emissions increase of NOX or VOC emissions, or a 
major source with a significant net emissions increase of 
NOX or VOC emissions from a major modification must conduct 
an analysis of impacts to ambient ozone concentrations (OAC 252:100-8-
35(a)).\13\ However, such a source with a net emissions increase less 
than 100 tons/year of NOX or VOCs will not have to gather 
ambient air quality [monitoring] data (OAC 252:100-8-33(c)). The EPA 
regulations cited at 40 CFR 51.166(i)(5)(i)(e) similarly allow for this 
exemption with respect to monitoring ozone air quality. The revisions 
we are approving (1) are consistent with the Clean Air Act and EPA 
regulations for regulating NOX and VOC emissions and (2) 
ensure that the Oklahoma SIP does not interfere with PSD measures 
required in any other State. Table 1 is a comparison of Oklahoma and 
EPA PSD regulations for regulating NOX emissions for ozone.
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    \13\ As noted in our proposal, OAC 252:100-8-31 was revised to 
include a NOX emissions rate of 40 tons per year in the 
definition of significant (75 FR 56923, 56927).

         Table 1--Comparison of Oklahoma and EPA PSD Regulations for Regulating NOX Emissions for Ozone
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             PSD issue                Oklahoma regulations being approved              EPA regulations
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Regulation of NOX as an ozone       OAC 252:100-8-31. Definitions            40 CFR 51.166(b)(49) Regulated NSR
 precursor.                         * * * * *                                 pollutant, for purposes of this
                                    ``Regulated NSR pollutant'' means (A) A   section, means the following: (i)
                                     regulated NSR pollutant is: (i) Any      Any pollutant for which a national
                                     pollutant for which a NAAQS has been     ambient air quality standard has
                                     promulgated and any constituents or      been promulgated and any pollutant
                                     precursors for such pollutants           identified under this paragraph
                                     identified by the Administrator (e.g.,   (b)(49)(i) as a constituent or
                                     VOC and NOX are precursors for ozone);   precursor to such pollutant.
                                                                              Precursors identified by the
                                                                              Administrator for purposes of NSR
                                                                              are the following: (a) Volatile
                                                                              organic compounds and nitrogen
                                                                              oxides are precursors to ozone in
                                                                              all attainment and unclassifiable
                                                                              areas.
----------------------------------------------------------------------------------------------------------------
Definition of Major Source for NOX  OAC 252:100-8-31. Definitions            40 CFR 51.166(b) Definitions.
                                    * * * * *                                * * * * *
                                    ``Major stationary source'' means        (1) (ii) A major source that is
                                    * * * * *                                 major for volatile organic
                                    (B) A major source that is major for      compounds or NOX shall be
                                     VOC or NOX shall be considered major     considered major for ozone.
                                     for ozone.
----------------------------------------------------------------------------------------------------------------
Definition of ``Significant''.....  OAC 252:100-8-31. Definitions            40 CFR 51.166(b)(23)(i) Significant
                                    * * * * *                                 means, in reference to a net
                                    ``Significant'' means: (A) In reference   emissions increase or the
                                     to a net emissions increase or the       potential of a source to emit any
                                     potential of a source to emit any of     of the following pollutants, a
                                     the following pollutants, significant    rate of emissions that would equal
                                     means a rate of emissions that would     or exceed any of the following
                                     equal or exceed any of the following     rates:
                                     rates:                                  Pollutant and Emissions Rate
                                    * * * * *                                * * * * *
                                    (v) ozone: 40 TPY [tons per year] of     Ozone: 40 tpy of volatile organic
                                     VOC or NOX,                              compounds or nitrogen oxides
----------------------------------------------------------------------------------------------------------------

[[Page 72700]]

 
Exemptions with respect to          OAC 252:100-8-33. Exemptions             40 CFR 51.166(i)(5) The plan may
 monitoring.                        * * * * *                                 provide that the reviewing
                                    (c) Exemption from monitoring             authority may exempt a proposed
                                     requirements.                            major stationary source or major
                                    The monitoring requirements of OAC        modification from the requirements
                                     252:100-8-35 are not applicable for a    of paragraph (m) of this section
                                     particular pollutant if the emission     [paragraph (m) is ``Air quality
                                     increase of the pollutant from a new     analysis''], with respect to
                                     source or the net emissions increase     monitoring for a particular
                                     of the pollutant from a modification     pollutant, if: (i) The emissions
                                     would cause, in any area, air quality    increase of the pollutant from a
                                     impacts less than the following listed   new stationary source or the net
                                     amounts, or are pollutant                emissions increase of the
                                     concentrations that are not on the       pollutant from a modification
                                     list.                                    would cause, in any area, air
                                    * * * * *                                 quality impacts less than the
                                    (E) Ozone--no de minimis air quality      following amounts:
                                     level is provided for ozone, however    * * * * *
                                     any net increase of 100 TPY or more of  (e) Ozone; \1\
                                     VOC or NOX subject to PSD would         * * * * *
                                     require an ambient impact analysis,     \1\ No de minimis air quality level
                                     including the gathering of ambient air   is provided for ozone. However,
                                     quality data,                            any net emissions increase of 100
                                    * * * * *                                 tons per year or more of volatile
                                                                              organic compounds or nitrogen
                                                                              oxides subject to PSD would be
                                                                              required to perform an ambient
                                                                              impact analysis, including the
                                                                              gathering of air quality data.
----------------------------------------------------------------------------------------------------------------

    Comment: One commenter provided comments on Oklahoma SIP provisions 
that address excess emissions during periods of startup, shutdown and 
malfunction (SSM). The commenter asserted that Oklahoma's SSM SIP 
provisions are inconsistent with EPA policy and have the potential to 
undermine the effectiveness of the good neighbor requirements of the 
Act. He further contends that the current SSM provisions interfere with 
the assumptions on which this rulemaking is based. The commenter argues 
that Oklahoma cannot ensure that emissions from sources within its 
borders will not interfere with NAAQS in other states when that 
determination does not account for the impermissibly broad SSM SIP 
provisions. The commenter also urged EPA to require Oklahoma to make 
changes to the existing SSM SIP provisions.
    Response: In the proposal, we proposed to find that the SIP 
revision submittal met the CAA requirements that emissions from sources 
in Oklahoma do not interfere with measures required in the SIP of any 
other State under part C of the CAA to prevent ``significant 
deterioration of air quality.'' The comments relating to excess 
emissions provisions and their impact upon NAAQS in other states are 
outside the scope of this action.
    In the proposal, we specifically note that we are not taking action 
on Chapter 100, Subchapter 9 (Excess Emissions Reporting Requirements). 
Further, in this action on 110(a)(2)(D)(i), we are not taking an action 
that reapproves the existing SSM provisions in the Oklahoma SIP. On 
July 15, 2010, the state withdrew the 2002 submittal on Chapter 100, 
Subchapter 9 (Excess Emissions Reporting Requirements) and submitted 
revised SSM provisions. We plan to take action on the submission at a 
later date. Commenters should resubmit their comments then.

IV. Statutory and Executive Order Review

    Under the Clean Air Act, 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 Clean Air Act. 
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.
    The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the 
Small Business Regulatory Enforcement Fairness Act of 1996, generally 
provides that before a rule may take effect, the agency promulgating 
the rule must submit a rule report, which includes a

[[Page 72701]]

copy of the rule, to each House of the Congress and to the Comptroller 
General of the United States. EPA will submit a report containing this 
action and other required information to the U.S. Senate, the U.S. 
House of Representatives, and the Comptroller General of the United 
States prior to publication of the rule in the Federal Register. A 
major rule cannot take effect until 60 days after it is published in 
the Federal Register. This action is not a ``major rule'' as defined by 
5 U.S.C. 804(2).
    Under section 307(b)(1) of the Clean Air Act, petitions for 
judicial review of this action must be filed in the United States Court 
of Appeals for the appropriate circuit by January 25, 2011. Filing a 
petition for reconsideration by the Administrator of this final rule 
does not affect the finality of this action for the purposes of 
judicial review nor does it extend the time within which a petition for 
judicial review may be filed, and shall not postpone the effectiveness 
of such rule or action. This action may not be challenged later in 
proceedings to enforce its requirements. (See section 307(b)(2).)

List of Subjects 40 CFR Part 52

    Environmental protection, Air pollution control, Incorporation by 
reference, Intergovernmental relations, Nitrogen dioxides, Ozone, 
Particulate matter, Reporting and recordkeeping requirements, Volatile 
organic compounds.

    Dated: November 10, 2010.
Lawrence E. Starfield,
Acting Regional Administrator, Region 6.

0
40 CFR part 52 is amended as follows:

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 LL--Oklahoma

0
2. In Sec.  52.1920:
0
a. The table in paragraph (c) entitled ``EPA APPROVED OKLAHOMA 
REGULATIONS'' is amended as follows:
0
i. Revising the entries under ``Regulation 1.4 Air Resources Management 
Permits Required'' for Sections 1.4.1(a) through 1.4.3(c).
0
ii. Removing the centered heading and the entries for ``1.4.4 Major 
Sources--Prevention of Significant Deterioration (PSD) Requirements for 
Attainment Areas'' and removing the centered heading and the entries 
for ``1.4.5. Major Sources--Nonattainment Areas''.
0
iii. Adding a new centered heading titled ``Subchapter 1. General 
Provisions'' immediately after the heading for Chapter 4 (OAC 252:4) 
Rules of Practice and Procedure, followed by new entries for Sections 
252:4-1-1 through 252:.4-1-9.
0
iv. Adding a new centered heading titled ``Subchapter 7. Environmental 
Permit Process'' immediately after the entry for Section 252:4-5-9, 
followed by a new centered heading titled ``PART 1. THE PROCESS'', 
followed by new entries for Sections 252:4-7-1 through 252:4-7-19, 
followed by a new centered heading titled ``PART 3. AIR QUALITY 
DIVISION TIERS AND TIME LINES'', followed by new entries for Sections 
252:4-7-31 through 252:4-7-34.
0
v. Adding a new entry for ``252:4, Appendix C'' immediately after the 
entry for 252:4, Appendix B under Appendices for OAC 252:Chapter 4.
0
vi. Revising the centered heading titled ``Subchapter 5. Registration 
of Air Contaminant Sources'' to read ``Subchapter 5. Registration, 
Emissions Inventory and Annual Operating Fees'', revising the entry for 
Section 252:100-5-1, adding a new entry for Section 252:100-5-1.1, 
revising the entry for Section 252:100-5-2, adding new entries for 
Sections 252:100-5-2.1 and 252:100-5-2.2, and revising the entry for 
Section 252:100-5-3 under ``CHAPTER 100 (OAC 252:100), AIR POLLUTION 
CONTROL''.
0
vii. Adding a new centered heading titled ``Subchapter 8. Permits for 
Part 70 Sources'' immediately after the entry for Section 252:100-5-3, 
followed by a new centered heading titled ``PART 1. GENERAL 
PROVISIONS'', followed by new entries for Sections 252:100-8-1 through 
252:100-8-1.5, followed by a new centered heading titled ``PART 5. 
PERMITS FOR PART 70 SOURCES'', followed by new entries for Sections 
252:100-8-2 through 252:100-8-8, followed by a new centered heading 
titled ``PART 7. PREVENTION OF SIGNIFICANT DETERIORATION (PSD) 
REQUIREMENTS FOR ATTAINMENT AREAS'', followed by new entries for 
Sections 252:100-8-30 through 252:100-8-37, followed by a new centered 
heading titled ``PART 9. MAJOR SOURCES AFFECTING NONATTAINMENT AREAS'', 
followed by new entries for Sections 252:100-8-50 through 252:100-8-54.
0
b. Paragraph (e) is amended by revising the heading of the table to 
read ``EPA Approved Nonregulatory Provisions and Quasi-Regulatory 
Measures in the Oklahoma SIP'' and adding a new entry for the Oklahoma 
Transport SIP at the end of the table.
    The additions and revisions read as follows:


Sec.  52.1920  Identification of plan.

* * * * *
    (c) * * *

                                        EPA-Approved Oklahoma Regulations
----------------------------------------------------------------------------------------------------------------
                                                State
    State citation        Title/subject    effective date  EPA approval date              Explanation
----------------------------------------------------------------------------------------------------------------
                                   OKLAHOMA AIR POLLUTION CONTROL REGULATIONS
----------------------------------------------------------------------------------------------------------------
                            Regulation 1.4. Air Resources Management Permits Required
----------------------------------------------------------------------------------------------------------------
                                  Regulation 1.4.1 General Permit Requirements
----------------------------------------------------------------------------------------------------------------
1.4.1(a)..............  Scope and purpose   \1\ 5/19/1983  8/25/1983, 48 FR   Minor sources only.
                                                            38635.
1.4.1(b)..............  General                  6/4/1990  7/23/1991, 56 FR   Minor sources only.
                         requirements.                      33715.
1.4.1(c)..............  Necessity to             6/4/1990  7/23/1991, 56 FR   Minor sources only.
                         obtain permit.                     33715.
1.4.1(d)..............  Permit fees......   \1\ 5/19/1983  8/25/1983, 48 FR   Minor sources only.
                                                            38635.
----------------------------------------------------------------------------------------------------------------
                                            1.4.2 Construction Permit
----------------------------------------------------------------------------------------------------------------
1.4.2(a)..............  Standards                6/4/1990  7/23/1991, 56 FR   Minor sources only.
                         required.                          33715.
1.4.2(b)..............  Stack height            6/11/1989  8/20/1990, 55 FR   Minor sources only.
                         limitation.                        33905.
1.4.2(c)..............  Permit                   6/4/1990  7/23/1991, 56 FR   Minor sources only.
                         applications.                      33715.
1.4.2(d)..............  Action on           \1\ 5/19/1983  8/25/1983, 48 FR   Minor sources only.
                         applications.                      38635.
1.4.2(e)..............  Public review....       6/11/1989  8/20/1990, 55 FR   Minor sources only.
                                                            33905.

[[Page 72702]]

 
1.4.2(f)..............  Construction        \1\ 5/19/1983  8/25/1983, 48 FR   Minor sources only.
                         permit                             38635.
                         conditions.
1.4.2(g)..............  Cancellation of      \1\ 2/6/1984  7/27/1984, 49 FR   Minor sources only.
                         authority to                       30184.
                         construct or
                         modify.
1.4.2(h)..............  Relocation             11/14/1990  7/23/1991, 56 FR   Minor sources only.
                         permits.                           33715.
----------------------------------------------------------------------------------------------------------------
                                             1.4.3 Operating Permit
----------------------------------------------------------------------------------------------------------------
1.4.3(a)..............  Requirements.....   \1\ 5/19/1983  8/25/1983, 48 FR   Minor sources only.
                                                            38635.
1.4.3(b)..............  Permit              \1\ 5/19/1983  8/25/1983, 48 FR   Minor sources only.
                         applications.                      38635.
1.4.3(c)..............  Operating permit    \1\ 5/19/1983  8/25/1983, 48 FR   Minor sources only.
                         conditions.                        38635.
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
                                          OKLAHOMA ADMINISTRATIVE CODE
----------------------------------------------------------------------------------------------------------------
                                 TITLE 252. DEPARTMENT OF ENVIRONMENTAL QUALITY
----------------------------------------------------------------------------------------------------------------
                             CHAPTER 4 (OAC 252:4). RULES OF PRACTICE AND PROCEDURE
----------------------------------------------------------------------------------------------------------------
                                        Subchapter 1. General Provisions
----------------------------------------------------------------------------------------------------------------
252:4-1-1.............  Purpose and             6/11/2001  11/26/2010
                         authority.                         [Insert FR page
                                                            number where
                                                            document begins].
252:4-1-2.............  Definitions......       6/11/2001  11/26/2010
                                                            [Insert FR page
                                                            number where
                                                            document begins].
252:4-1-3.............  Organization.....       6/11/2001  11/26/2010
                                                            [Insert FR page
                                                            number where
                                                            document begins].
252:4-1-4.............  Office location         6/11/2001  11/26/2010
                         and hours;                         [Insert FR page
                         communications.                    number where
                                                            document begins].
252:4-1-5.............  Availability of a       6/11/2001  11/26/2010
                         record.                            [Insert FR page
                                                            number where
                                                            document begins].
252:4-1-6.............  Administrative          6/11/2001  11/26/2010
                         fees.                              [Insert FR page
                                                            number where
                                                            document begins].
252:4-1-7.............  Fee credits for         6/11/2001  11/26/2010
                         regulatory fees.                   [Insert FR page
                                                            number where
                                                            document begins].
252:4-1-8.............  Board and               6/11/2001  11/26/2010
                         councils.                          [Insert FR page
                                                            number where
                                                            document begins].
252:4-1-9.............  Severability.....       6/11/2001  11/26/2010
                                                            [Insert FR page
                                                            number where
                                                            document begins].
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
                                   Subchapter 7. Environmental Permit Process
----------------------------------------------------------------------------------------------------------------
                                               PART 1. THE PROCESS
----------------------------------------------------------------------------------------------------------------
252:4-7-1.............  Authority........       6/11/2001  11/26/2010
                                                            [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-2.............  Preamble.........       6/11/2001  11/26/2010
                                                            [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-3.............  Compliance.......       6/11/2001  11/26/2010
                                                            [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-4.............  Filing an               6/11/2001  11/26/2010
                         application,.                      [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-5.............  Fees.............       6/11/2001  11/26/2010
                                                            [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-6.............  Receipt of              6/11/2001  11/26/2010
                         applications.                      [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-7.............  Administrative          6/11/2001  11/26/2010
                         completeness                       [Insert FR page
                         review.                            number where
                                                            document begins].
252:4-7-8.............  Technical review.       6/11/2001  11/26/2010
                                                            [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-9.............  When review times       6/11/2001  11/26/2010
                         stop.                              [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-10............  Supplemental time       6/11/2001  11/26/2010
                                                            [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-11............  Extensions.......       6/11/2001  11/26/2010
                                                            [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-12............  Failure to meet         6/11/2001  11/26/2010
                         deadline.                          [Insert FR page
                                                            number where
                                                            document begins].

[[Page 72703]]

 
252:4-7-13............  Notices..........       6/11/2001  11/26/2010         NOT in SIP: Paragraph (e) and
                                                            [Insert FR page    paragraph (f) requirements for
                                                            number where       permits other than Part 70
                                                            document begins].  permits.
252:4-7-14............  Withdrawing             6/11/2001  11/26/2010
                         applications.                      [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-15............  Permit issuance         6/11/2001  11/26/2010
                         or denial.                         [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-16............  Tier II and III         6/11/2001  11/26/2010
                         modifications.                     [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-17............  Permit decision-        6/11/2001  11/26/2010
                         making authority.                  [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-18............  Pre-issuance            6/11/2001  11/26/2010
                         permit review                      [Insert FR page
                         and correction.                    number where
                                                            document begins].
252:4-7-19............  Consolidation of        6/11/2001  11/26/2010
                         permitting                         [Insert FR page
                         process.                           number where
                                                            document begins].
----------------------------------------------------------------------------------------------------------------
                                PART 3. AIR QUALITY DIVISION TIERS AND TIME LINES
----------------------------------------------------------------------------------------------------------------
252:4-7-31............  Air quality time        6/11/2001  11/26/2010
                         lines.                             [Insert FR page
                                                            number where
                                                            document begins].
252:4-7-33............  Air quality             6/11/2001  11/26/2010
                         applications--Ti                   [Insert FR page
                         er II.                             number where
                                                            document begins].
252:4-7-34............  Air quality             6/11/2001  11/26/2010
                         applications--Ti                   [Insert FR page
                         er III.                            number where
                                                            document b