[Federal Register Volume 59, Number 11 (Tuesday, January 18, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-1061]


[[Page Unknown]]

[Federal Register: January 18, 1994]


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ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 52

[MT9-1-6134 & MT13-1-6133; FRL-4807-5]

 

Clean Air Act Approval and Promulgation of PM10 
Implementation Plan for Montana

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: In this action, EPA approves the State implementation plan 
(SIP) submitted by the State of Montana to achieve attainment of the 
National ambient air quality standards (NAAQS) for particulate matter 
with an aerodynamic diameter less than or equal to a nominal 10 
micrometers (PM10). The SIP was submitted by Montana to satisfy 
certain Federal requirements for an approvable moderate nonattainment 
area PM10 SIP for Missoula. In this final rule, EPA also approves 
the Missoula City-County Air Pollution Control Program, except several 
rules regarding emergency procedures, permitting, open burning, wood-
waste burners, new source performance standards, hazardous air 
pollutant standards, and variances. EPA will propose separate action on 
these rules when the State fulfills its related commitments. One 
commitment has been fulfilled (see the This Action section of this 
document for more information). If the State fails to fulfill the 
remainder of its commitments, EPA will take appropriate action. 
Further, EPA is declining to take action on Missoula's odor provisions.

EFFECTIVE DATE: This rule will become effective on February 17, 1994.

ADDRESSES: Copies of the State's submittal and other information are 
available for inspection during normal business hours at the following 
locations: Environmental Protection Agency, Region VIII, Air Programs 
Branch, 999 18th Street, Suite 500, Denver, Colorado 80202-2405; 
Montana Department of Health and Environmental Sciences, Air Quality 
Bureau, Cogswell Building, Helena, Montana 59620-0901; and Mr. Jerry 
Kurtzweg, ANR-443, Environmental Protection Agency, 401 M Street, SW., 
Washington, DC 20460.

FOR FURTHER INFORMATION CONTACT: Amy Platt, Environmental Protection 
Agency, Region VIII, (303) 293-1769.

SUPPLEMENTARY INFORMATION:

I. Background

    The Missoula, Montana area was designated nonattainment for 
PM10 and classified as moderate under sections 107(d)(4)(B) and 
188(a) of the Clean Air Act, upon enactment of the Clean Air Act 
Amendments of 1990.1 See 56 FR 56694 (November 6, 1991); 40 CFR 
81.327 (Missoula and vicinity). The air quality planning requirements 
for moderate PM10 nonattainment areas are set out in subparts 1 
and 4 of part D, title I of the Act.
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    \1\The 1990 Amendments to the Clean Air Act made significant 
changes to the air quality planning requirements for areas that do 
not meet (or that significantly contribute to ambient air quality in 
a nearby area that does not meet) the PM10 National Ambient Air 
Quality Standards (see Public Law No. 101-549, 104 Stat. 2399). 
References herein are to the Clean Air Act, as amended (``the 
Act''), 42 U.S.C. 7401, et seq.
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    EPA has issued a ``General Preamble'' describing its preliminary 
views on how EPA intends to review SIPs and SIP revisions submitted 
under title I of the Act, including those State submittals containing 
moderate PM10 nonattainment area SIP requirements (see generally 
57 FR 13498 (April 16, 1992) and 57 FR 18070 (April 28, 1992)). Because 
EPA is describing its interpretations here only in broad terms, the 
reader should refer to the General Preamble for a more detailed 
discussion of the interpretations of title I advanced in this final 
action and the supporting rationale.
    Those States containing initial moderate PM10 nonattainment 
areas (i.e., those areas designated nonattainment for PM10 under 
section 107(d)(4)(B) of the Act) were required to submit, among other 
things, the following provisions by November 15, 1991:

    1. Provisions to assure that reasonably available control measures 
(RACM) (including such reductions in emissions from existing sources in 
the area as may be obtained through the adoption, at a minimum, of 
reasonably available control technology (RACT)) shall be implemented no 
later than December 10, 1993;
    2. Either a demonstration (including air quality modelling) that 
the plan will provide for attainment as expeditiously as practicable 
but no later than December 31, 1994, or a demonstration that attainment 
by that date is impracticable;
    3. Quantitative milestones which are to be achieved every 3 years 
and which demonstrate reasonable further progress (RFP) toward 
attainment by December 31, 1994; and
    4. Provisions to assure that the control requirements applicable to 
major stationary sources of PM10 also apply to major stationary 
sources of PM10 precursors except where the Administrator 
determines that such sources do not contribute significantly to 
PM10 levels which exceed the NAAQS in the area. See sections 
172(c), 188, and 189 of the Act.
    Some provisions are due at a later date. States with initial 
moderate PM10 nonattainment areas were required to submit a permit 
program for the construction and operation of new and modified major 
stationary sources of PM10 by June 30, 1992 (see section 189(a)). 
Such States also must submit contingency measures by November 15, 1993 
that become effective without further action by the State or EPA, upon 
a determination by EPA that the area has failed to achieve RFP or to 
attain the PM10 NAAQS by the applicable statutory deadline. See 
section 172(c)(9) and 57 FR 13543-13544.
    On September 15, 1993, EPA announced its proposed approval of the 
Missoula, Montana moderate nonattainment area PM10 SIP, including 
parts of the Missoula City-County Air Pollution Control Program, as 
meeting those moderate nonattainment area PM10 SIP requirements 
due on November 15, 1991 (58 FR 48339-48343). In that proposed 
rulemaking action and related Technical Support Document (TSD), EPA 
described in detail its interpretations of title I and its rationale 
for proposing to approve the Missoula moderate nonattainment area 
PM10 SIP, taking into consideration the specific factual issues 
presented.
    EPA requested public comments on all aspects of the proposal 
(please reference 58 FR 48343), and comments from the State of Montana 
and Stone Container Corporation were received during the comment 
period, which ended on October 15, 1993. (For further discussion of 
these public comments, please see below and the Addendum to the TSD for 
EPA's proposed rulemaking action on this SIP.) This final action on the 
Missoula moderate nonattainment area PM10 SIP, and portions of the 
Missoula City-County Air Pollution Control Program, is unchanged from 
the September 15, 1993 proposed approval action, except for two 
typographical errors noted by EPA. First, in the table describing 
sources, controls, emission reductions, and effective dates, the 
effective date for the Louisiana-Pacific permit modification should 
have been listed as March 20, 1992 instead of January 23, 1992, as 
indicated. Second, under the Enforceability Issues section, the final 
modification date for Stone Container Corporation's air quality permit 
#2589-M should have been January 23, 1992 instead of November 25, 1992, 
as indicated.
    The discussion herein provides only a broad overview of the 
proposed action EPA is now finalizing. The public is referred to the 
September 15, 1993 proposed rule for a more in-depth discussion of the 
action now being finalized.

II. Response to Comments

    EPA did not receive any adverse public comments regarding its 
September 15, 1993 proposed approval of the Missoula moderate 
nonattainment area PM10 SIP (58 FR 48339-48343). However, the 
State of Montana submitted comments for clarification purposes, and 
Stone Container Corporation submitted comments to express general 
support for EPA's action. Comments were as follows.
    In a letter dated September 24, 1993 from Jeff Chaffee, Montana 
Department of Health and Environmental Sciences, to Amy Platt, EPA, and 
through verbal communications, the State indicated that since 
submitting the original moderate nonattainment area PM10 SIP for 
Missoula, it discovered a minor arithmetic error in its 24-hour 
attainment and maintenance demonstrations, as well as an error in the 
way it had addressed background concentrations in both the 24-hour and 
annual attainment and maintenance demonstrations. The background 
concentrations, i.e., naturally occurring PM10 concentrations that 
cannot be controlled, had not been subtracted from the 24-hour and 
annual design values before apportioning the credits derived from the 
outlined control measures. The State has corrected these calculations, 
and with the adjustments, the 24-hour and annual attainment values 
(i.e., ambient PM10 air quality levels achieved by 19952) are 
as follows: 143.8 g/m3 and 44.7 g/m3, 
respectively. (Before these adjustments, the 24-hour and annual 
attainment values were 142.1 g/m3 and 45.3 g/
m3, respectively.) The adjusted 24-hour and annual maintenance 
values (i.e., ambient PM10 air quality levels maintained through 
January 1, 1998) are 147.0 g/m3 and 45.5 g/
m3, respectively. (Before these adjustments, the 24-hour and 
annual maintenance values were 145.2 g/m3 and 46.2 
g/m3, respectively.)
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    \2\The Clean Air Act calls for attainment by December 31, 1994. 
Section 188(c)(1). EPA interprets the State's demonstration as 
providing for attainment by January 1, 1995. EPA is approving the 
State's demonstration on the basis of the de minimis differential 
between the two dates.
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    Since these corrected calculations are based on properly handling 
the background concentration and since the adjusted values still 
adequately demonstrate attainment and maintenance of the PM10 
NAAQS and do not represent major changes to those considered in EPA's 
proposed action, EPA is proceeding with its approval of this SIP. There 
is no need to adopt additional control measures based on these adjusted 
calculations.
    Comments were also received in an October 11, 1993 letter from 
Larry Weeks, Stone Container Corporation, to Amy Platt, EPA. The 
comments were not adverse and expressed general support for EPA's 
action on the Missoula PM10 SIP. However, several of Stone 
Container's comments indicate a misunderstanding of EPA's intended 
action on this SIP and need further explanation.
    First, EPA did not propose to approve the odor control rules 
contained in the SIP submittal and Stone Container communicated its 
support but referenced ``Montana's odor control rules.'' EPA's action 
regarding odor regulations applies specifically to the Missoula City-
County regulation (Chapter IX, Subchapter 14, Rule 1427) contained in 
the SIP submittal.
    Second, Stone Container submitted comments suggesting it viewed the 
reduction in allowable PM10 emissions from its No. 5 recovery 
boiler as voluntary reductions. Stone Container's recovery boilers were 
identified by chemical mass balance receptor modelling to contribute 
8.1% of the PM10 ambient concentrations in Missoula. The SIP 
submittal demonstrated that Stone Container is contributing to the 
PM10 nonattainment problem in the Missoula and vicinity 
nonattainment area and that reductions in allowable emissions from 
recovery boiler No. 5 are part of an enforceable permit that are 
necessary to demonstrate expeditious attainment of the PM10 NAAQS 
in the area. EPA agrees with the State's judgement that the reduction 
in allowable emissions from recovery boiler No. 5 is necessary to 
ensure expeditious attainment of the PM10 NAAQS in the area. EPA's 
final approval of this limitation means that it will become part of the 
federally enforceable implementation plan. See, e.g., sections 113 and 
302(q) of the Act.
    Next, Stone Container commented that because EPA proposed to 
approve the control requirement exclusion for major stationary sources 
of PM10 precursors authorized by section 189(e) of the Act, it 
would not make sense for the SIP to include contingency measures that 
would call for limitations on industrial sources. Contingency measures 
for moderate PM10 nonattainment areas are due to EPA no later than 
November 15, 1993 and were not submitted by the State as part of the 
SIP revisions being addressed in this action. Thus, this comment is 
misplaced and does not address a matter within the scope of the 
September 15, 1993 proposed action on the SIP submittals for the 
Missoula area. For clarification purposes, EPA simply notes that EPA's 
finding that major sources of PM10 precursors do not contribute 
significantly to PM10 levels in excess of the NAAQS in Missoula 
addresses PM10 precursors only. Note that this finding is based on 
the current character of the area including, for example, the existing 
mix of sources in the area. It is possible, therefore, that future 
growth could change the significance of precursors in the area. Stone 
Container has been shown to be currently contributing to primary 
PM10 emissions in Missoula.
    Finally, since Stone Container has been shown to contribute to the 
PM10 ambient concentrations in Missoula, contingency measures that 
include limitations on its emissions could be sought by the State. 
Although Stone Container is located outside the nonattainment area, it 
is still a contributing source (approximately 8% of the PM10 
ambient concentrations in Missoula). Therefore, it may be necessary and 
reasonable to include emission reductions at Stone Container as part of 
the contingency measures for Missoula. EPA will reserve judgement on 
the adequacy of any contingency measures submitted by the State until 
such time as EPA receives a contingency measure submittal and provides 
public notice and opportunity for public comment on its adequacy.

This Action

    Section 110(k) of the Act sets out provisions governing EPA's 
review of SIP submittals (see 57 FR 13565-13566). The Governor of 
Montana submitted the Missoula PM10 SIP with a letter dated June 
4, 1992, and requested that EPA take action on the June 4, 1992 
submittal together with the August 20, 1991 submittal of the Missoula 
City-County Air Pollution Control Program. The submittals taken 
together were intended to satisfy those moderate nonattainment area 
PM10 SIP requirements due for Missoula on November 15, 1991. As 
described in EPA's proposed action on this SIP (58 FR 48339-48343, 
September 15, 1993), the Missoula moderate nonattainment area PM10 
plan includes, among other things, a comprehensive and accurate 
emissions inventory, control measures that satisfy the RACM 
requirement, a demonstration (including air quality modelling) that 
attainment of the PM10 NAAQS will be achieved by January 1, 1995 
(see footnote #2), provisions for meeting the November 15, 1994 
quantitative milestone and reasonable further progress, and 
enforceability documentation. Further, EPA proposed to determine that 
major sources of precursors of PM10 do not contribute 
significantly to PM10 levels in excess of the NAAQS in 
Missoula.3 Please refer to EPA's notice of proposed rulemaking (58 
FR 48339) and the TSD for that action for a more detailed discussion of 
these elements of the Missoula plan.
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    \3\The consequences of this finding are to exclude these sources 
from the applicability of PM10 nonattainment area control 
requirements. Note that EPA's finding is based on the current 
character of the area including, for example, the existing mix of 
sources in the area. It is possible, therefore, that future growth 
could change the significance of precursors in the area.
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    In this final rulemaking, EPA announces its approval of those 
elements of the Missoula, Montana moderate nonattainment area PM10 
SIP that were due on November 15, 1991, and submitted on August 20, 
1991 and June 4, 1992. In this final action, EPA is also announcing its 
approval of the Missoula City-County Air Pollution Control Program 
regulations (which were submitted on August 20, 1991 and June 4, 1992) 
except for the following provisions: Chapter IX-Subchapter 4, Emergency 
Procedures; Subchapter 11, Permit, Construction & Operation of Air 
Contaminant Sources; Subchapter 13, Open Burning; Subchapter 14, Rule 
1407, Wood-Waste Burners, Rule 1423, Standard of Performance for New 
Stationary Sources (NSPS), Rule 1424, Emission Standards for Hazardous 
Air Pollutants (NESHAPs), and Rule 1427, Control of Odors in Ambient 
Air; and Chapter X, Variances. EPA described the deficiencies 
associated with these rules in its notice of proposed rulemaking and 
the TSD for that action.
    EPA finds that the State of Montana's PM10 SIP for the 
Missoula moderate nonattainment area meets the Reasonably Available 
Control Measures (RACM), including Reasonably Available Control 
Technology (RACT), requirement. Five sources/source categories were 
identified as contributing to the PM10 nonattainment problem in 
Missoula and, therefore, were targeted for control in the SIP. The 
State has demonstrated that by applying control measures to area 
sources (re-entrained road dust, residential wood combustion, 
prescribed burning, and motor vehicle exhaust), as well as reducing 
allowable emissions through air quality permit modifications for 
Louisiana-Pacific and Stone Container, Missoula will be in attainment 
by January 1, 1995 (see footnote #2). It does not appear that applying 
further control measures to these sources would expedite attainment. 
EPA views the following measures as reasonable, enforceable, and 
responsible for significant PM10 emissions reductions in Missoula: 
(a) Missoula County Rule 1401(7), which sets sanding and chip sealing 
standards and street sweeping and flushing requirements; (b) Missoula 
County Rule 1401(9), which establishes liquid de-icer requirements; (c) 
industry permit modifications made to reduce allowable PM10 
emissions from Stone Container Corporation's recovery boiler No. 5 and 
Louisiana-Pacific Corporation's particle board dryers; and (d) the 
Federal tailpipe standards, which provide an ongoing benefit due to 
fleet turnover. Further, although no credit was claimed in the SIP, EPA 
is approving the following measures to make them federally enforceable 
and to further strengthen the SIP. The measures provide additional 
PM10 air quality protection. These measures are: (a) Missoula 
County Rule 1428, which sets standards for the regulation for solid 
fuel burning devices; and (b) Missoula County Rule 1310(3), which sets 
standards for the regulation of prescribed wildland open burning.
    A more detailed discussion of the individual source contributions, 
their associated control measures (including available control 
technology) and an explanation of why certain available control 
measures were not implemented, can be found in the TSD accompanying 
EPA's proposed approval of the Missoula moderate PM10 
nonattainment area SIP (58 FR 48339-48343). EPA has reviewed the 
State's documentation and concluded that it adequately justifies the 
control measures to be implemented. The implementation of Montana's 
PM10 nonattainment plan for Missoula will result in the attainment 
of the PM10 NAAQS by January 1, 1995 (see footnote #2). By this 
notice EPA is approving the Missoula PM10 moderate nonattainment 
area plan's control measures as satisfying the RACM, including RACT, 
requirement.
    As noted, EPA did not propose approval, nor is EPA taking final 
action, on some portions of the Missoula City-County Air Pollution 
Control Program regulations. To address EPA-identified deficiencies in 
the Missoula and statewide SIP, the State committed to complete 
additional tasks to correct these deficiencies (except the concerns EPA 
raised regarding the variance provisions). A more detailed explanation 
of the State's commitments can be found in EPA's September 15, 1993 
proposed approval of the Missoula moderate nonattainment area PM10 
SIP (58 FR 48339-48343) and the TSD for that action). Since none of the 
rules associated with these commitments has an impact on the attainment 
demonstration, credited control strategies in the Missoula PM10 
SIP, or other Federal Clean Air Act SIP requirements for the Missoula 
moderate PM10 nonattainment area due to EPA on November 15, 1991, 
EPA will take separate action, as appropriate, when such commitments 
are fulfilled by the State, and also will address the variances chapter 
at that time. Further, EPA is declining to take action on Chapter IX, 
Subchapter 14: Rule 1427, Control of Odors in Ambient Air. These odor 
provisions do not have a reasonable connection to the NAAQS-related air 
quality goals of the Clean Air Act.
    The State has fulfilled one commitment to revise its NSPS and 
NESHAPs regulations to incorporate all Federal requirements promulgated 
through July 1, 1992. In a March 9, 1993 submittal, the State satisfied 
this commitment, and EPA will announce its action on these revisions in 
a separate notice.
    Nothing in this action should be construed as permitting or 
allowing or establishing a precedent for any future request for a 
revision to any SIP. Each request for a revision to the SIP shall be 
considered separately in light of specific technical, economic, and 
environmental factors, and in relation to relevant statutory and 
regulatory requirements.

Final Action

    This document announces EPA's final action on the action proposed 
at 58 FR 48339. As noted elsewhere in this final action, EPA received 
no adverse public comments on the proposed action. As a direct result, 
the Regional Administrator has reclassified this action from Table 1 to 
Table 3 under the processing procedures established at 54 FR 2214, 
January 19, 1989.

Regulatory Process

    Under the Regulatory Flexibility Act, 5 U.S.C. 600, et seq., EPA 
must prepare a regulatory flexibility analysis assessing the impact of 
any proposed or final rule on small entities. 5 U.S.C. 603 and 604. 
Alternatively, EPA may certify that the rule will not have a 
significant economic impact on a substantial number of small entities. 
Small entities include small businesses, small not-for-profit 
enterprises, and government entities with jurisdiction over populations 
of less than 50,000.
    SIP approvals under section 110 and subchapter I, part D of the 
Clean Air Act do not create any new requirements, but simply approve 
requirements that the State is already imposing. Therefore, because the 
Federal SIP-approval does not impose any new requirements, I certify 
that it does not have a significant impact on a substantial number of 
small entities affected. Moreover, due to the nature of the Federal-
state relationship under the Clean Air Act, preparation of a regulatory 
flexibility analysis would constitute Federal inquiry into the economic 
reasonableness of state action. The Clean Air Act forbids EPA to base 
its actions concerning SIPs on such grounds. Union Electric Co. v. U.S. 
E.P.A., 427 U.S. 246, 256-66 (1976); 42 U.S.C. 7410(a)(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 March 21, 1994. 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 file, 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).)

Executive Order (EO) 12866

    This action has been classified as a Table 3 action by the Regional 
Administrator under the procedures published in the Federal Register on 
January 19, 1989 (54 FR 2214-2225). On January 6, 1989, the Office of 
Management and Budget waived Table 2 and 3 SIP revisions (54 FR 2222) 
from the requirements of section 3 of Executive Order 12291 for a 
period of two years. USEPA has submitted a request for a permanent 
waiver for Table 2 and Table 3 SIP revisions. OMB has agreed to 
continue the waiver until such time as it rules on USEPA's request. 
This request continues in effect under Executive Order 12866 which 
superseded Executive Order 12291 on September 30, 1993.

List of Subjects in 40 CFR Part 52

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

    Note: Incorporation by reference of the State Implementation 
Plan for the State of Montana was approved by the Director of the 
Federal Register on July 1, 1982.

    Dated: November 3, 1993.
Kerrigan Clough,
Acting Regional Administrator.

    Part 52, chapter I, title 40 of the Code of Federal Regulations is 
amended as follows:

PART 52--[AMENDED]

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


    Authority: 42 U.S.C. 7401-7671q.

Subpart BB--Montana

    2. Section 52.1370 is amended by adding paragraph (c)(30) to read 
as follows:


Sec. 52.1370  Identification of plan.

* * * * *
    (c) * * *
    (30) The Governor of Montana submitted a portion of the 
requirements for the moderate nonattainment area PM10 State 
Implementation Plan (SIP) for Missoula, Montana, and the Missoula City-
County Air Pollution Control Program regulations with letters dated 
August 20, 1991 and June 4, 1992. The submittals were made to satisfy 
those moderate PM10 nonattainment area SIP requirements due for 
Missoula on November 15, 1991.
    (i) Incorporation by reference.
    (A) Stipulation signed April 29, 1991 between the Montana 
Department of Health and Environmental Sciences and the Missoula City-
County Air Pollution Control Board, which delineates responsibilities 
and authorities between the two entities.
    (B) Board order issued on June 28, 1991 by the Montana Board of 
Health and Environmental Sciences approving the comprehensive revised 
version of the Missoula City-County Air Pollution Control Program.
    (C) Board order issued on March 20, 1992 by the Montana Board of 
Health and Environmental Sciences approving the amendments to Missoula 
City-County Air Pollution Control Program Rule 1401, concerning the use 
of approved liquid de-icer, and Rule 1428, concerning pellet stoves.
    (D) Missoula County Rule 1401 (7), effective June 28, 1991, which 
addresses sanding and chip sealing standards and street sweeping and 
flushing requirements.
    (E) Missoula County Rule 1401 (9), effective March 20, 1992, which 
addresses liquid de-icer requirements.
    (F) Missoula County Rule 1428, effective June 28, 1991, with 
revisions to sections (2)(l)-(p), (4)(a)(i), and (4)(c)(vi) of Rule 
1428, effective March 20, 1992, which addresses requirements for solid 
fuel burning devices.
    (G) Missoula County Rule 1310 (3), effective June 28, 1991, which 
addresses prescribed wildland open burning.
    (H) Other Missoula City-County Air Pollution Control Program 
regulations effective June 28, 1991, as follows: Chapter I. Short 
Title; Chapter II. Declaration of Policy and Purpose; Chapter III. 
Authorities for Program; Chapter IV. Administration; Chapter V. Control 
Board, Meetings-Duties-Powers; Chapter VI. Air Quality Staff; Chapter 
VII. Air Pollution Control Advisory Council; Chapter VIII. Inspections; 
Chapter IX., Subchapter 7 General Provisions; Chapter IX., Subchapter 
14, Emission Standards, Rules 1401, 1402, 1403, 1404, 1406 (with 
amendments effective March 20, 1992), 1411, 1419, 1425, and 1426; 
Chapter XI. Enforcement, Judicial Review and Hearings; Chapter XII. 
Criminal Penalties; Chapter XIII. Civil Penalties; Chapter XIV. Non-
Compliance Penalties; Chapter XV. Separability Clause; Chapter XVI. 
Amendments and Revisions; Chapter XVII. Limitations, and Appendix A, 
Maps.
    (ii) Additional material.
    (A) Montana Department of Health and Environmental Sciences Air 
Quality Permit #2303-M, with a final modification date of March 20, 
1992, for Louisiana-Pacific Corporation's particle board manufacturing 
facility.
    (B) Montana Department of Health and Environmental Sciences Air 
Quality Permit #2589-M, with a final modification date of January 23, 
1992, for Stone Container Corporation's pulp and paper mill facility.
    (C) Federal tailpipe standards, which provide an ongoing benefit 
due to fleet turnover.
[FR Doc. 94-1061 Filed 1-14-94; 8:45 am]
BILLING CODE 6560-50-F