Approval and Promulgation of State Implementation Plans; Montana; Revisions to Administrative Rules of Montana, and Interstate Transport of Pollution, 10150-10154 [E8-3338]

Agencies

• ENVIRONMENTAL PROTECTION AGENCY

[Federal Register Volume 73, Number 38 (Tuesday, February 26, 2008)]
[Rules and Regulations]
[Pages 10150-10154]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-3338]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R08-OAR-2007-0646; FRL-8527-1]


Approval and Promulgation of State Implementation Plans; Montana; 
Revisions to Administrative Rules of Montana, and Interstate Transport 
of Pollution

AGENCY: Environmental Protection Agency (EPA).

ACTION: Direct final rule.

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SUMMARY: EPA is taking direct final action approving State 
Implementation Plan (SIP) revisions submitted by the State of Montana 
on June 28, 2000 and April 16, 2007. The revisions update 
Administrative Rules of Montana (ARM) provisions for Particulate 
Matter, and address Interstate Transport Pollution requirements of 
Section 110(a)(2)(D)(i) of the Clean Air Act. On June 28, 2000, the 
Governor of Montana submitted

[[Page 10151]]

revisions to ARM rules 17.8.101-Definitions; 17.8.308-Particulate 
Matter, Airborne; and 17.8.320-Wood Waste Burners. In the April 16, 
2007 submission, the Governor of Montana requested EPA's review and 
approval of the ``Interstate Transport Rule Declaration'' adopted into 
the State SIP on February 12, 2007. The June 28, 2000 submittal 
included also a declaration certifying the adequacy of the State SIP in 
regard to the infrastructure-related PM2.5 elements of 
Section 110. EPA is not taking action on this declaration since the 
State rescinded the request for approval with the April 16, 2007 
submittal. This action is being taken under section 110 of the Clean 
Air Act.

DATES: This rule is effective on April 28, 2008 without further notice, 
unless EPA receives adverse comment by March 27, 2008. If adverse 
comment is received, EPA will publish a timely withdrawal of the direct 
final rule in the Federal Register informing the public that the rule 
will not take effect.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R08-
OAR-2007-0646, by one of the following methods:
     www.regulations.gov. Follow the on-line instructions for 
submitting comments.
     E-mail: videtich.callie@epa.gov and 
mastrangelo.domenico@epa.gov.
     Fax: (303) 312-6064 (please alert the individual listed in 
the FOR FURTHER INFORMATION CONTACT if you are faxing comments).
     Mail: Callie Videtich, Director, Air and Radiation 
Program, Environmental Protection Agency (EPA), Region 8, Mailcode 8P-
AR, 1595 Wynkoop Street, Denver, Colorado 80202-1129.
     Hand Delivery: Callie Videtich, Director, Air and 
Radiation Program, Environmental Protection Agency (EPA), Region 8, 
Mailcode 8P-AR, 1595 Wynkoop, Denver, Colorado 80202-1129. Such 
deliveries are only accepted Monday through Friday, 8 a.m. to 4:55 
p.m., excluding Federal holidays. Special arrangements should be made 
for deliveries of boxed information.
    Instructions: Direct your comments to Docket ID No. EPA-R08-OAR-
2007-0646. EPA's policy is that all comments received will be included 
in the public docket without change and may be made available online at 
www.regulations.gov, including any personal information provided, 
unless the comment includes information claimed to be Confidential 
Business Information (CBI) or other information whose disclosure is 
restricted by statute. Do not submit information that you consider to 
be CBI or otherwise protected through www.regulations.gov or e-mail. 
The www.regulations.gov Web site is an ``anonymous access'' system, 
which means EPA will not know your identity or contact information 
unless you provide it in the body of your comment. If you send an e-
mail comment directly to EPA, without going through www.regulations.gov 
your e-mail address will be automatically captured and included as part 
of the comment that is placed in the public docket and made available 
on the Internet. If you submit an electronic comment, EPA recommends 
that you include your name and other contact information in the body of 
your comment and with any disk or CD-ROM you submit. If EPA cannot read 
your comment due to technical difficulties and cannot contact you for 
clarification, EPA may not be able to consider your comment. Electronic 
files should avoid the use of special characters, any form of 
encryption, and be free of any defects or viruses. For additional 
instructions on submitting comments, go to Section I. General 
Information of the SUPPLEMENTARY INFORMATION section of this document.
    Docket: All documents in the docket are listed in the 
www.regulations.gov index. Although listed in the index, some 
information is not publicly available, e.g., CBI or other information 
whose disclosure is restricted by statute. Certain other material, such 
as copyrighted material, will be publicly available only in hard copy. 
Publicly-available docket materials are available either electronically 
in www.regulations.gov or in hard copy at the Air and Radiation 
Program, Environmental Protection Agency (EPA), Region 8, Mailcode 8P-
AR, 1595 Wynkoop, Denver, Colorado 80202-1129. EPA requests that if at 
all possible, you contact the individual listed in the FOR FURTHER 
INFORMATION CONTACT section to view the hard copy of the docket. You 
may view the hard copy of the docket Monday through Friday, 8 a.m. to 4 
p.m., excluding Federal holidays.

FOR FURTHER INFORMATION CONTACT: Domenico Mastrangelo, Air and 
Radiation Program, U.S. Environmental Protection Agency, Region 8, 
Mailcode 8P-AR, 1595 Wynkoop, Denver, Colorado 80202-1129, (303) 312-
6436, mastrangelo.domenico@epa.gov.

SUPPLEMENTARY INFORMATION:

Definitions

    For the purpose of this document, we are giving meaning to certain 
words or initials 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 words EPA, we, us or our mean or refer to the United 
States Environmental Protection Agency.
    (iii) The initials SIP mean or refer to State Implementation Plan.
    (iv) The words State or Montana mean the State of Montana, unless 
the context indicates otherwise.

Table of Contents

I. General Information
II. What is the purpose of this action?
III. What is the State process to submit these materials to EPA?
IV. EPA's evaluation of the State of Montana June 28, 2000 submittal
V. EPA's evaluation of the State of Montana April 16, 2007 submittal
VI. Final Action
VII. Statutory and Executive Order Reviews

I. General Information

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

    1. Submitting CBI. Do not submit CBI to EPA through 
www.regulations.gov or e-mail. Clearly mark the part or all of the 
information that you claim to be CBI. For CBI information in a disk or 
CD ROM that you mail to EPA, mark the outside of the disk or CD ROM as 
CBI and then identify electronically within the disk or CD ROM the 
specific information that is claimed as CBI. In addition to one 
complete version of the comment that includes information claimed as 
CBI, a copy of the comment that does not contain the information 
claimed as CBI must be submitted for inclusion in the public docket. 
Information so marked will not be disclosed except in accordance with 
procedures set forth in 40 CFR part 2.
    2. Tips for Preparing Your Comments. When submitting comments, 
remember to:
    a. Identify the rulemaking by docket number and other identifying 
information (subject heading, Federal Register date and page number).
    b. Follow directions--The agency may ask you to respond to specific 
questions or organize comments by referencing a Code of Federal 
Regulations (CFR) part or section number.
    c. Explain why you agree or disagree; suggest alternatives and 
substitute language for your requested changes.
    d. Describe any assumptions and provide any technical information 
and/or data that you used.
    e. If you estimate potential costs or burdens, explain how you 
arrived at your estimate in sufficient detail to allow for it to be 
reproduced.

[[Page 10152]]

    f. Provide specific examples to illustrate your concerns, and 
suggest alternatives.
    g. Explain your views as clearly as possible, avoiding the use of 
profanity or personal threats.
    h. Make sure to submit your comments by the comment period deadline 
identified.

II. What is the purpose of this action?

    EPA is approving revisions to the Administrative Rules of Montana 
(ARM) submitted by the State of Montana on June 28, 2000, and the 
addition to Montana's SIP of the ``Interstate Transport Rule 
Declaration'' submitted on April 16, 2007. The June 28, 2000 
submission, adopted on March 17, 2000 and effective on March 31, 2000, 
included the addition of definitions of PM and PM2.5, in ARM 
17.8.101(31) and (32) respectively, as well as related changes to ARM 
17.8.308(4), Particulate Matter, Airborne, and 17.8.320(6), Wood Waste 
Burners. The adoption of a definition for PM accounts for the fact that 
there is more than one size of particulate matter being regulated, and 
the addition of the PM2.5 definition allows the 
incorporation of the EPA measurement reference method for 
PM2.5. ARM 17.8.308(4) and 17.8.320(6) are amended by 
substituting the term ``PM'' for the term ``PM10'' in all 
applicable rules to specify control requirements and emission limits 
for new sources and certain wood-waste burners located in particulate 
matter nonattainment areas. Editorial amendments to ARM 17.8.308(4) 
make the rule more concise and the term used for particulate matter 
consistent with the language in other rules.
    EPA is also approving the ``Interstate Transport Rule Declaration'' 
adopted into the State of Montana SIP on February 12, 2007, effective 
on the same date, and submitted to EPA on April 16, 2007. The 
Interstate Transport Rule Declaration addresses the requirements of 
Section 110(a)(2)(D)(i) of the Clean Air Act (CAA). Section 
110(a)(2)(D)(i) of the CAA requires that each state's SIP include 
adequate provisions prohibiting emissions that adversely affect another 
state's air quality through interstate transport of air pollutants.

III. What is the State process to submit these materials to EPA?

    Section 110(k) of the CAA addresses EPA's actions on submissions of 
revisions to a SIP. The CAA requires States to observe certain 
procedural requirements in developing SIP revisions for submittal to 
EPA. Section 110(a)(2) of the CAA requires that each SIP revision be 
adopted after reasonable notice and public hearing. This must occur 
prior to the revision being submitted by a state to EPA.
    The Montana Board of Environmental Review (BER) held a public 
hearing for the addition of definitions for PM and PM2.5, in 
ARM 17.8.101(31) and (32) respectively, as well as changes to ARM 
17.8.308(4) and 17.8.320(6) on January 25, 2000. The definitions and 
other rule changes were adopted by the Board on March 17, 2000 and 
became effective on March 31, 2000. The Governor submitted these SIP 
revisions to EPA on June 28, 2000.
    The Montana Board of Environmental Review (BER) held a public 
hearing for the addition of the Interstate Transport Rule Declaration 
to Montana's SIP on February 12, 2007. The Declaration was adopted by 
BER and became State effective also on February 12, 2007. The Governor 
submitted these SIP revisions to EPA on April 16, 2007.
    We have evaluated the Governor's submittals of these SIP revisions 
and have determined that the State met the requirements for reasonable 
notice and public hearing under Section 110(a)(2) of the CAA.

IV. EPA's Evaluation of the State of Montana June 28, 2000 Submittal

1. Changes to the Definition of Particulate Matter

    Montana is adding new definitions of PM and PM2.5. These 
changes in definition are approvable and will make particulate matter 
references more clearly understood by the public. Specifically, the 
definition under ARM 17.8.101(31) will clarify that all applicable 
definitions of particulate matter are specified by aerodynamic size 
class. Furthermore, the definition under ARM 17.8.101(32) specifies 
that PM2.5 is particulate matter with a diameter of less 
than or equal to a nominal 2.5 micrometers as measured by a reference 
method based on 40 CFR part 50, Appendix L, and designated in 
accordance with 40 CFR part 53, or by an equivalent method designated 
in accordance with 40 CFR part 53.
    The revisions to ARM 17.8.308(4) and ARM 17.8.320(6) replace the 
term PM10 with PM to maintain consistency with the previous 
change in definition and include editorial changes that make the 
language clearer.

2. Certification of the Adequacy of the Section 110 Elements for 
Implementation of the PM Program

    EPA is not taking any action with respect to the declaration made 
by the State of Montana with respect to Section 110(a)(2)(D)(i) on the 
adequacy of the infrastructure-related elements required to implement 
the particulate matter program. The State rescinded this portion of the 
June 28, 2000 submittal in its April 16, 2007 submittal.

V. EPA's Evaluation of the State of Montana April 16, 2007 Submittal

    EPA has reviewed the State's Interstate Transport Rule Declaration 
submitted on April 16, 2007 and believes that approval is warranted. 
The provisions of the CAA Section 110(a)(2)(D)(i) require that the 
Montana SIP contain adequate provisions prohibiting air pollutant 
emissions from sources or activities in the state from adversely 
affecting another state. A state SIP must include provisions that 
prohibit sources from emitting pollutants in amounts which will: (1) 
Contribute significantly to nonattainment of the NAAQS in another 
state; (2) interfere with maintenance of the NAAQS by another state; 
(3) interfere with another state's measures to prevent significant 
deterioration of its air quality; and (4) interfere with the efforts of 
another state to protect visibility. EPA issued guidance on August 15, 
2006 relating to SIP submissions that meet the requirements of Section 
110(a)(2)(D)(i) for the PM2.5 and the 8-hour ozone 
standards. The Interstate Transport Rule Declaration submitted by the 
State of Montana is consistent with the guidance.
    To support the first two of the four elements noted above, the 
State of Montana relies on a combination of: (a) EPA positions and 
modeling analysis results published in Federal Register notices as part 
of the Clean Air Interstate Rule (CAIR) rulemaking process; and, (b) 
considerations of geographical, meteorological and topographical 
factors affecting the likelihood of pollution transport from the State 
to the closest PM2.5 and 8-hour ozone nonattainment areas in 
other states.
    In addition, EPA includes data and analysis based on materials 
published in EPA's CAIR rulemaking notices and on monitoring data 
gathered by the states and reported to EPA in the Air Quality System 
(AQS) database.
    For PM2.5 Montana identifies Merced, California, and 
Chicago, Illinois, as the nonattainment areas closest to the State 
urban centers. Merced is more than 700 miles from Missoula and in a 
direction opposite to that of the prevailing winds. The Cook County 
nonattainment area, in which Chicago is located, is more than 1,000 
miles from Billings, the closest Montana city. Given this distance and 
the absence of PM2.5 nonattainment areas between Billings 
and Chicago, it is

[[Page 10153]]

unlikely that Montana is making a significant contribution to the 
PM2.5 nonattainment status of Cook County. This assessment 
is consistent with results of the modeling analysis EPA conducted and 
reported in the rulemaking Federal Register notices for the 
determination of the CAIR states (69 FR 4566 and 70 FR 25162). 
According to the CAIR Proposed Rule of January 30, 2004, the maximum 
PM2.5 contribution by Montana to downwind counties 
identified as being in nonattainment for the base years 2010 and 2015 
is to Cook County, and is estimated to be 0.03 [mu]g/m3 
(Table V-5, 69 FR 4608). This amount is well below the ``significant 
contribution'' threshold of 0.20 [mu]g/m3 set by EPA.
    An examination of AQS monitoring data suggests that Montana's 
PM2.5 contribution is well below the ``significant 
contribution'' threshold. During the years 2004-2006 monitors in the 
State of Montana showed PM2.5 exceedance days on five days: 
January 19, July 9 and 15, 2005, and August 30 and September 5, 2006. 
There were no concurrent or delayed measurable effects registered at 
monitors in the closest downwind, or potentially downwind, states of 
North Dakota, South Dakota and Wyoming. In fact, during the entire time 
span considered here, the PM2.5 monitors in these three 
states did not register any exceedance days.
    For the 8-hour ozone standard, Montana's Interstate Transport Rule 
Declaration identifies the Denver Metropolitan Area in Colorado, and 
the Chico area in California, as the closest nonattainment areas. Fort 
Collins, the city at the northernmost edge of the Denver Metropolitan 
Area is more than 400 miles from Billings, and Chico is more than 600 
miles from Missoula. Again, distance, in combination with the 
meteorological and topographic factors of the areas involved, indicate 
as highly unlikely a significant Montana contribution to the 8-hour 
ozone nonattainment in the Chico and Denver/Fort Collins areas.
    We have also examined the AQS data on 8-hour ozone exceedance days 
registered during the 2004-2006 years at the monitoring sites in 
Montana and in neighboring downwind states or potentially downwind 
states. During these years the ozone monitors did not register any 
exceedance days in Montana or in the closest downwind states of North 
Dakota and South Dakota. In the same time span the Wyoming monitors 
measured 8-hours ozone exceedances on less than 0.5 percent of the 
days. Wyoming monitors registered three exceedance days on February 3, 
20 and 26, 2005. The absence of 8-hour ozone exceedance days in Montana 
and its closest downwind states of North Dakota and South Dakota, 
combined with the rare occurrence of exceedance days in Wyoming, is 
consistent with conclusions drawn from other data and analysis, 
presented in the preceding paragraphs: Any ozone or ozone precursor 
transport from Montana to downwind states is not high enough to 
significantly contribute to nonattainment of the NAAQS or interfere 
with maintenance of the NAAQS in neighboring downwind states.
    The data and analysis examined above indicates that the Interstate 
Transport Rule Declaration adopted by Montana in the State SIP 
satisfactorily addresses the first two elements of the CAA Section 
110(a)(2)(D)(i) for the PM2.5 and 8-hour ozone standards.
    The third element of the Section 110(a)(2)(D)(i) provisions 
requires states to prohibit emissions that interfere with any other 
state's measures to prevent significant deterioration (PSD) of air 
quality. The State of Montana explains that the State's SIP provisions 
include EPA-approved PSD and Nonattainment New Source Review (NNSR) 
programs with pre-construction and permitting requirements for new 
major sources and major modifications to existing sources that satisfy 
the Section 110(a)(2)(D)(i) requirements. The State also expresses its 
commitment to continue implementing its PSD and NNSR provisions.
    The fourth element of the Section 110(a)(2)(D)(i) provisions 
concerns the requirement that a state SIP prohibit sources from 
emitting pollutants that interfere with the efforts of another state to 
protect visibility. Consistent with the August 15, 2006 EPA guidance, 
the Montana Interstate Transport Rule Declaration indicates that at 
this time the State is unable to verify whether there is interference 
with measures in another state's SIP designed to ``protect visibility'' 
for the 8-hour ozone and PM2.5. This fourth element will be 
addressed in the regional haze implementation plan. Therefore, emitting 
pollutants will be addressed in Montana for the third and fourth 
elements of the Section 110(a)(2)(D)(i) provisions in a way that is 
consistent with the EPA guidance noted above.

VI. Final Action

    EPA is approving, through direct final rulemaking, the additions to 
the Administrative Rules of Montana (ARM) of the definition of PM and 
PM2.5, ARM 17.8.101(31) and ARM 17.8.101(32), as well as the 
modifications to ARM 17.8.308(4) and ARM17.8.320(6). These changes were 
adopted on March 17, 2000, became effective on March 31, 2000 and were 
submitted to EPA on June 28, 2000.
    EPA is also approving the Interstate Transport Declaration Rule 
submitted by Montana on April 16, 2007 and is revising 40 CFR 52.1370 
to reflect that the State has adequately addressed the required 
elements of Section 110(a)(2)(D)(i) of the Clean Air Act.
    Section 110(l) of the CAA states that a SIP revision cannot be 
approved if the revision would interfere with any applicable 
requirement concerning attainment and reasonable further progress 
towards attainment of a NAAQS or any other applicable requirement of 
the CAA. The new definitions of particulate matter and other state 
regulations will not interfere with attainment, reasonable further 
progress, or any other applicable requirement of the CAA.
    EPA is publishing this rule without prior proposal because the 
Agency views this as a noncontroversial amendment and anticipates no 
adverse comments. This rule will be effective April 28, 2008 without 
further notice unless the Agency receives adverse comments by March 27, 
2008. If the EPA receives adverse comments, EPA will publish a timely 
withdrawal in the Federal Register informing the public that the rule 
will not take effect. EPA will address all public comments in a 
subsequent final rule based on the proposed rule. The EPA will not 
institute a second comment period on this action. Any parties 
interested in commenting must do so at this time. Please note that if 
EPA receives adverse comment on an amendment, paragraph, or section of 
this rule and if that provision may be severed from the remainder of 
the rule, EPA may adopt as final those provisions of the rule that are 
not the subject of an adverse comment.

VII. Statutory and Executive Order Reviews

    Under Executive Order 12866 (58 FR 51735, October 4, 1993), this 
action is not a ``significant regulatory action'' and therefore is not 
subject to review by the Office of Management and Budget. For this 
reason, this action is also not subject to Executive Order 13211, 
``Actions Concerning Regulations That Significantly Affect Energy 
Supply, Distribution, or Use'' (66 FR 28355, May 22, 2001). This action 
merely approves state law as meeting Federal requirements and imposes 
no additional requirements beyond those imposed by

[[Page 10154]]

state law. Accordingly, the Administrator certifies that this rule will 
not have a significant economic impact on a substantial number of small 
entities under the Regulatory Flexibility Act (5 U.S.C. 601 et seq.). 
Because this rule approves pre-existing requirements under state law 
and does not impose any additional enforceable duty beyond that 
required by state law, it 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).
    This rule also does not have tribal implications because it will 
not have a substantial direct effect on one or more Indian tribes, on 
the relationship between the Federal Government and Indian tribes, or 
on the distribution of power and responsibilities between the Federal 
Government and Indian tribes, as specified by Executive Order 13175 (65 
FR 67249, November 9, 2000). This action also does not have Federalism 
implications because it does not have substantial direct effects on the 
States, on the relationship between the national government and the 
States, or on the distribution of power and responsibilities among the 
various levels of government, as specified in Executive Order 13132 (64 
FR 43255, August 10, 1999). This action merely approves a state rule 
implementing a Federal standard, and does not alter the relationship or 
the distribution of power and responsibilities established in the Clean 
Air Act. This rule also is not subject to Executive Order 13045 
``Protection of Children from Environmental Health Risks and Safety 
Risks'' (62 FR 19885, April 23, 1997), because it is not economically 
significant.
    In reviewing SIP submissions, EPA's role is to approve state 
choices, provided that they meet the criteria of the Clean Air Act. In 
this context, in the absence of a prior existing requirement for the 
State to use voluntary consensus standards (VCS), EPA has no authority 
to disapprove a SIP submission for failure to use VCS. It would thus be 
inconsistent with applicable law for EPA, when it reviews a SIP 
submission, to use VCS in place of a SIP submission that otherwise 
satisfies the provisions of the Clean Air Act. Thus, the requirements 
of section 12(d) of the National Technology Transfer and Advancement 
Act of 1995 (15 U.S.C. 272 note) do not apply. This rule does not 
impose an information collection burden under the provisions of the 
Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.).
    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 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 rule 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 April 28, 2008. Filing a 
petition for reconsideration by the Administrator of this final rule 
does not affect the finality of this rule for the purposes of judicial 
review nor does it extend the time within which a petition for judicial 
review may be filed, and shall not postpone the effectiveness of such 
rule or action. This action may not be challenged later in proceedings 
to enforce its requirements. (See section 307(b)(2).)

List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Incorporation by 
reference, Intergovernmental relations, Nitrogen dioxide, Ozone, 
Particulate matter, Reporting and recordkeeping requirements, Volatile 
Organic Compounds.

    Dated: January 29, 2008.
Carol Rushin,
Acting Regional Administrator, Region 8.

0
40 CFR part 52 is amended to read 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 BB--Montana

0
2. Section 52.1370 is amended by adding paragraph (c)(65) to read as 
follows:


Sec.  52.1370  Identification of plan.

* * * * *
    (c) * * *
    (65) On June 28, 2000, the Governor of Montana submitted to EPA 
revisions to the Montana State Implementation Plan. The revisions add 
definitions for PM and PM2.5, ARM 17.8.101(31) and (32) 
respectively, and revise ARM 17.8.308(4) and ARM 17.8.320(6) through 
editorial amendments making the rule more concise and consistent with 
the language in all applicable rules.
    (i) Incorporation by reference. Administrative Rules of Montana 
(ARM) sections: ARM 17.8.101(31) and (32); 17.8.308(4) introductory 
text, and 17.8.308(4)(b) and (c); and 17.8.320(6). March 31, 2000 is 
the effective date of these revised rules effective March 31, 2000.
    (ii) Additional Material. April 16, 2007 letter by the Governor of 
Montana rescinding its statement of certification regarding the 1997 
NAAQS as submitted in June 28, 2000.

0
3. Section 52.1393 is added to read as follows:


Sec.  52.1393  Interstate Transport Declaration for the 1997 8-hour 
ozone and PM2.5 NAAQS.

    The State of Montana added the Interstate Transport Rule 
Declaration to the State SIP, State of Montana Air Quality Control 
Implementation Plan, Volume I, Chapter 9, to satisfy the requirements 
of Clean Air Act Section 110(a)(2)(D)(i) for the 8-hour ozone and 
PM2.5 NAAQS promulgated in July 1997. The Montana Interstate 
Transport Rule Declaration, adopted and effective on the same date of 
February 12, 2007, was submitted to EPA on April 16, 2007. The April 
16, 2007 Governor's letter included as an attachment a set of dated 
replacement pages for the Montana Interstate Transport Rule 
Declaration. The new set of pages were sent as replacement for the set 
of undated pages submitted earlier with the February 12, 2007 Record of 
Adoption package. In a May 10, 2007 e-mail to Domenico Mastrangelo, 
EPA, Debra Wolfe, of the Montana Department of Environmental Quality, 
confirmed February 12, 2007 as the adoption/effective date for the 
Montana Interstate Transport Rule Declaration.

 [FR Doc. E8-3338 Filed 2-25-08; 8:45 am]
BILLING CODE 6560-50-P