2015-09414. Approval and Promulgation of Air Quality Implementation Plans; Montana; Revised Format for Materials Being Incorporated by Reference for Montana

AGENCY:

Environmental Protection Agency (EPA).

ACTION:

Final rule; administrative change.

SUMMARY:

The Environmental Protection Agency (EPA) is revising the format of materials submitted by the state of Montana that are incorporated by reference (IBR) into its State Implementation Plan (SIP). The regulations affected by this format change have all been previously submitted by Montana and approved by the EPA.

DATES:

This action is effective April 24, 2015.

ADDRESSES:

EPA has established a docket for this action under Docket ID No. EPA-R08-OAR-2015-0158. SIP Materials which are incorporated by reference into 40 CFR part 52 are available for inspection Monday through Friday, 8:00 a.m. to 4:00 p.m., excluding federal holidays, at the Air Program, Environmental Protection Agency (EPA), Region 8, 1595 Wynkoop Street, Denver, Colorado 80202-1129. EPA requests that you contact the individual listed in the FOR FURTHER INFORMATION CONTACT section to view the hard copy of the docket. An electronic copy of the state's SIP compilation is also available at http://www.epa.gov/​region8/​air/​sip.html. A hard copy of the regulatory and source-specific portions of the compilation will also be maintained at the Air and Radiation Docket and Information Center, EPA West Building, Room 3334, 1301 Constitution Ave. NW., Washington, DC 20460 and the National Archives and Records Administration (NARA). If you wish to obtain materials from a docket in the EPA Headquarters Library, please call the Office of Air and Radiation (OAR) Docket at [phone]. For information on the availability of this material at NARA call [phone], or go to http://www.archives.gov/​federal_​register/​code_​of_​federal_​regulations/​ibr_​locations.html.

FOR FURTHER INFORMATION CONTACT:

Kathy Ayala, Air Program, U.S. Environmental Protection Agency (EPA), Region 8, Mailcode 8P-AR, 1595 Wynkoop Street, Denver, Colorado 80202-1129, 303-312-6142, [e-mail].

SUPPLEMENTARY INFORMATION:

I. Change in IBR Format

This format revision will affect the “Identification of plan” section of 40 CFR part 52, as well as the format of the SIP materials that will be available for public inspection at the National Archives and Records Administration (NARA); the Air and Radiation Docket and Information Center located at EPA Headquarters in Washington, DC, and the EPA Region 8 Office.

A. Description of a SIP

Each state has a SIP containing the control measures and strategies used to attain and maintain the national ambient air quality standards (NAAQS) and achieve certain other Clean Air Act (Act) requirements (e.g., visibility requirements, prevention of significant deterioration). The SIP is extensive, containing such elements as air pollution control regulations, emission inventories, monitoring network descriptions, attainment demonstrations, and enforcement mechanisms.

B. How EPA Enforces the SIP

Each SIP revision submitted by Montana must be adopted at the state level after undergoing reasonable notice and public hearing. SIPs submitted to EPA to attain or maintain the NAAQS must include enforceable emission limitations and other control measures, schedules and timetables for compliance.

EPA evaluates submitted SIPs to determine if they meet the Act's requirements. If a SIP meets the Act's requirements, EPA will approve the SIP. EPA's notice of approval is published in the Federal Register and the approval is then codified at 40 CFR part 52. Once EPA approves a SIP, it is enforceable by EPA and citizens in federal district court.

We do not reproduce in 40 CFR part 52 the full text of the Montana regulations that we have approved. Instead, we incorporate them be reference or IBR. We approve a given state regulation with a specific effective date and then refer the public to the location(s) of the full text version of the state regulation(s) should they want to know which measures are contained in a given SIP (see I.F., Where You Can Find a Copy of the SIP Compilation).

C. How the State and EPA Update the SIP

The SIP is a dynamic document which the state can revise as necessary to address the unique air pollution problems in the state. Therefore, EPA from time to time must take action on SIP revisions containing new and/or revised regulations.

On May 22, 1997 (62 FR 27968), EPA announced revised procedures for IBR of federally approved SIPs. The procedures announced included: (1) A new process for IBR of material submitted by states into compilations and a process for updating those compilations on roughly an annual basis; (2) a revised mechanism for announcing EPA approval of revisions to an applicable SIP and updating both the compilations and the CFR; and, (3) a revised format for the “Identification of plan” sections for each applicable subpart to reflect these revised IBR procedures.

D. How EPA Compiles the SIP

We have organized into a compilation the federally-approved regulations, source-specific requirements and nonregulatory provisions we have approved into the SIP. These compilations may be found at http://www.epa.gov/​region8/​air/​sip.html. In addition, we maintain hard copies of the compilation which are updated periodically.

E. How EPA Organizes the SIP Compilation

Each compilation contains three parts. Part one contains the state regulations that have been approved, part two contains the source-specific requirements that have been approved as part of the SIP (if any), and part three contains non-regulatory provisions that have been approved. Each compilation contains a table of identifying information for each regulation, each source-specific requirement, and each nonregulatory provision. The state effective dates in the tables indicate the date of the most recent revision to a particular approved regulation. The table of identifying information in the compilation corresponds to the table of contents published in 40 CFR part 52 for the state. The EPA Regional Offices have the primary responsibility for ensuring accuracy and updating the compilations.

F. Where You Can Find a Copy of the SIP Compilation

EPA Region 8 developed and will maintain the compilation for Montana. An electronic copy of the compilation is contained at http://www.epa.gov/​region8/​air/​sip.html. SIP Materials which are incorporated by reference into 40 CFR part 52 are also available for inspection at the following locations: Air and Radiation Docket and Information Center, U.S. Environmental Protection Agency, EPA West Building, Room 3334, 1301 Constitution Ave. NW., Washington, DC 20460 or the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call [phone], or go to: http://www.archives.gov/​federal-register/​cfr/​ibr-locations.html.

G. The Format of the New Identification of Plan Section

In order to better serve the public, EPA has revised the organization of the “Identification of plan” section in 40 CFR part 52 and included additional information to clarify the elements of the SIP.

The revised Identification of plan section for Montana contains five subsections:

1. Purpose and scope (see 40 CFR 52.1370(a));

2. Incorporation by reference (see 40 CFR 52.1370(b));

3. EPA-approved regulations (see 40 CFR 52.1370(c));

4. EPA-approved source-specific requirements (see 40 CFR 52.1370(d)); and,

5. EPA-approved nonregulatory provisions such as transportation control measures, statutory provisions, control strategies, monitoring networks, etc. (see 40 CFR 42.1370(e)).

H. When a SIP Revision Becomes Federally Enforceable

All revisions to the applicable SIP are federally enforceable as of the effective date of EPA's approval of the respective revision. In general, SIP revisions become effective 30 to 60 days after publication of EPA's SIP approval action in the Federal Register. In specific cases, a SIP revision action may become effective less than 30 days or greater than 60 days after the Federal Register publication date. In order to determine the effective date of EPA's approval for a specific Montana SIP provision that is listed in 40 CFR 52.1370(c), (d), or (e), consult the volume and page of the Federal Register cited in 40 CFR 52.1370 for that particular provision.

I. The Historical Record of SIP Revision Approvals

To facilitate enforcement of previously approved SIP provisions and to provide a smooth transition to the new SIP processing system, we are retaining the original Identification of plan section (see 40 CFR 52.1397). This section previously appeared at 40 CFR 52.1370. After an initial two-year period, we will review our experience with the new table format and will decide whether to retain the original Identification of plan section (40 CFR 52.1397) for some further period.

II. What EPA is doing in this action?

This action constitutes a “housekeeping” exercise to reformat the codification of the EPA-approved Montana SIP.

III. Good Cause Exemption

EPA has determined that this action falls under the “good cause” exemption in section 553(b)(3)(B) of the Administrative Procedure Act (APA) which, upon a finding of “good cause” authorizes agencies to dispense with public participation, and section 553(d)(3), which allows an agency to make a rule effective immediately (thereby avoiding the 30-day delayed effective date otherwise provided for in the APA). This action simply reformats the codification of provisions which are already in effect as a matter of law.

Under section 553 of the APA, an agency may find good cause where procedures are “impractical, unnecessary, or contrary to the public interest.” Public comment is “unnecessary” and “contrary to the public interest” since the codification only reflects existing law. Likewise, there is no purpose served by delaying the effective date of this action.

IV. Statutory and Executive Order Reviews

A. General Requirements

Under Executive Order 12866 (58 FR 51735, October 4, 1993), this action is not a “significant regulatory action” and is therefore not subject to review by the Office of Management and Budget. This rule is not subject to Executive Order 13211, “Actions Concerning Regulations That Significantly Affect Energy Supply, Distribution, or Use” (66 FR 28355, May 22, 2001) because it is not a significant regulatory action under Executive Order 12866. Because the agency has made a “good cause” finding that this action is not subject to notice-and-comment requirements under the Administrative Procedure Act or any other statute as indicated in this SUPPLEMENTARY INFORMATION section, it is not subject to the regulatory flexibility provisions of the Regulatory Flexibility Act (5 U.S.C. 601 et seq.), or to sections 202 and 205 of the Unfunded Mandates Reform Act of 1995 (UMRA) (Pub. L. 104-4). In addition, this action does not significantly or uniquely affect small governments or impose a significant intergovernmental mandate, as described in sections 203 and 204 of UMRA. This rule also does 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), nor will it 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 rule also is not subject to Executive Order 13045 (62 FR 19885, April 23, 1997), because it is not economically significant. This rule does not involve technical standards; 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. The rule also does not involve special consideration of environmental justice related issues as required by Executive Order 12898 (59 FR 7629, February 16, 1994). This rule does not impose an information collection burden under the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). EPA's compliance with these statutes and Executive Orders for the underlying rules are discussed in previous actions taken on the state's rules.

B. Submission to Congress and the Comptroller General

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. Section 808 allows the issuing agency to make a rule effective sooner than otherwise provided by the CRA if the agency makes a good cause finding that notice and public procedure is impracticable, unnecessary or contrary to the public interest. This action simply codifies provisions which are already in effect as a matter of law in federal and approved state programs. 5 U.S.C. 808(2). As stated previously, EPA has made such a good cause finding and established an effective date of April 24, 2015. 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. This change to the Identification of plan for Montana is not a “major rule” as defined by 5 U.S.C. 804(2).

C. Petitions for Judicial Review

EPA has also determined that the provisions of section 307(b)(1) of the Clean Air Act pertaining to petitions for judicial review are not applicable to this action. Prior EPA rulemaking actions for each individual component of the Montana SIP compilation had previously afforded interested parties the opportunity to file a petition for judicial review in the United States Court of Appeals for the appropriate circuit within 60 days of such rulemaking action. Thus, EPA sees no need in this action to reopen the 60-day period for filing such petitions for judicial review for this “Identification of plan” reorganization action for Montana.

List of Subjects in 40 CFR Part 52

• Environmental protection
• Air pollution control
• Carbon monoxide
• Incorporation by reference
• Intergovernmental relations
• Lead
• Nitrogen dioxide
• Ozone
• Particulate matter
• Reporting and recordkeeping requirements
• Sulfur oxides
• Volatile organic compounds

Dated: March 14, 2015.

Shaun L. McGrath,

Regional Administrator, Region 8.

40 CFR part 52 is amended to read as follows:

PART 52 [AMENDED]

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

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

Subpart BB—Montana

§ 52.1370

[Redesignated as § 52.1397]

2. Section 52.1370 is redesignated as § 52.1397, and in newly redesignated § 52.1397, revise the section heading and paragraph (a) to read as follows:

§ 52.1397

Original identification of plan.

(a) This section identifies the original “Air Implementation Plan for the State of Montana” and all revisions submitted by Montana that were federally approved prior to March 1, 2015.

* * * * *

3. Add § 52.1370 to read as follows:

§ 52.1370

Identification of plan.

(a) Purpose and scope. This section sets forth the applicable State Implementation Plan for Montana under section 110 of the Clean Air Act, 42 U.S.C. 7410 and 40 CFR part 51 to meet national ambient air quality standards or other requirements under the Clean Air Act.

(b) Incorporation by reference. (1) Material listed in paragraphs (c), (d), and (e) of this section with an EPA approval date prior to March 1, 2015, was approved for incorporation by reference by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Material is incorporated as submitted by the state to EPA, and notice of any change in the material will be published in the Federal Register. Entries for paragraphs (c), (d), and (e) of this section with EPA approval dates after March 1, 2015, will be incorporated by reference in the next update to the SIP compilation.

(2) EPA Region 8 certifies that the rules/regulations provided by EPA in the SIP compilation at the addresses in paragraph (b)(3) of this section are an exact duplicate of the officially promulgated state rules/regulations which have been approved as part of the State Implementation Plan as of March 1, 2015.

(3) Copies of the materials incorporated by reference may be inspected at the Environmental Protection Agency, Region 8, 1595 Wynkoop Street, Denver, Colorado 80202-1129; Air and Radiation Docket and Information Center, U.S. Environmental Protection Agency, West Building, 1301 Constitution Ave. NW., Washington, DC 20460; and, the National Archives and Records Administration (NARA). For information on the availability of materials from the docket in the EPA Headquarters Library, please call the Office of Air and Radiation (OAR) at [phone]. For information on the availability of this material at NARA, call [phone], or go to http://www.archives.gov/​federal-register/​cfr/​ibr-locations.html. Copies of the Montana regulations we have approved are also available at http://www.epa.gov/​region8/​air/​sip.html.

(c) EPA-approved regulations.

State citation	Rule title	State effective date	EPA final rule date	Final rule citation	Comments
(1) Statewide
(i) Administrative Rules of Montana, Subchapter 01, General Provisions
17.8.101	Definitions	8/11/2006	1/26/2010	75 FR 3993
17.8.102	Incorporation by Reference	10/24/2008	1/29/2010	75 FR 4698
17.8.103	Incorporation by Reference	10/26/2007	1/26/2010	75 FR 3993
17.8.105	Testing Requirements	7/4/1996	8/13/2001	66 FR 42427
17.8.106	Source Testing Protocol	10/8/1999	8/13/2001	66 FR 42427
17.8.110	Malfunctions	4/11/2003	1/24/2006	71 FR 3776
17.8.111	Circumvention	9/13/1985	8/13/2001	66 FR 42427
17.8.130	Enforcement Procedures—Notice of Violation—Order to Take Corrective Action	4/9/2004	1/24/2006	71 FR 3770
17.8.131	Enforcement Procedures—Appeal to Board	12/31/1972	8/13/2001	66 FR 42427
17.8.132	Credible Evidence	12/8/2000	11/20/2002	67 FR 70009
17.8.140	Rehearing Procedures—Form and Filing of Petition	12/31/1972	8/13/2001	66 FR 42427
17.8.141	Rehearing Procedures—Filing Requirements	12/31/1972	8/13/2001	66 FR 42427
17.8.142	Rehearing Procedures—Board Review	12/31/1972	8/13/2001	66 FR 42427
(ii) Administrative Rules of Montana, Subchapter 03, Emission Standards
17.8.301	Definitions	10/24/2008	1/29/2010	75 FR 4698
17.8.302	Incorporation by Reference	10/26/2007	1/26/2010	75 FR 3993
17.8.304	Visible Air Contaminants	8/11/1995	8/13/2001	66 FR 42427	Excluding (4)(f).
17.8.308	Particulate Matter, Airborne	2/13/2009	1/29/2010	75 FR 4698
17.8.309	Particulate Matter, Fuel Burning Equipment	11/10/1995	8/13/2001	66 FR 42427	Excluding (5)(b).
17.8.310	Particulate Matter, Industrial Processes	11/10/1995	8/13/2001	66 FR 42427	Excluding (3)(e).
17.8.316	Incinerators	4/9/2004	7/29/2008	73 FR 43871
17.8.320	Wood-waste Burners	4/9/2004	1/24/2006	71 FR 3770
17.8.321	Sulfur Emissions—Kraft Pulp Mills (16.8.1413)	12/31/1972	7/18/1995	60 FR 36715	* 16.8.1413 is the SIP approved Kraft Pulp Mill Rule. 17.8.321 is not SIP approved.
17.8.322	Sulfur Oxide Emissions—Sulfur in Fuel	12/31/1972	8/13/2001	66 FR 42427
17.8.324	Hydrocarbon Emissions—Petroleum Products	10/29/1993	8/13/2001	66 FR 42427	Excluding (1)(c) and (2)(d).
17.8.325	Motor Vehicles	12/31/1972	8/13/2001	66 FR 42427
17.8.326	Prohibited Materials for Wood or Coal Residential Stoves	10/29/1993	8/13/2001	66 FR 42427
17.8.330	Emission Standards for Existing Aluminum Plants—Definitions	2/10/1989	8/13/2001	66 FR 42427
17.8.331	Emission Standards for Existing Aluminum Plants—Standards	2/26/1982	8/13/2001	66 FR 42427
17.8.332	Emission Standards for Existing Aluminum Plants—Standard for Visible Emissions	7/4/1996	8/13/2001	66 FR 42427
17.8.333	Emission Standards for Existing Aluminum Plants—Monitoring and Reporting	2/26/1982	8/13/2001	66 FR 42427
17.8.334	Emission Standards for Existing Aluminum Plants—Startup and Shutdown	2/26/1982	8/13/2001	66 FR 42427
(iii) Administrative Rules of Montana, Subchapter 04, Stack Heights and Dispersion Techniques
17.8.401	Definitions [16.8.1204]	6/13/1986	7/18/1995	60 FR 36715	* 16.8.1204 is the SIP approved Stack Height and Dispersion Techniques rule. 17.8.401 is not SIP approved.
17.8.402	Requirements [16.8.1205]	6/13/1986	7/18/1995	60 FR 36715	* 16.8.1205 is the SIP approved Stack Height and Dispersion Techniques rule. 17.8.402 is not SIP approved.
17.8.403	Exemptions [16.8.1206]	6/13/1986	7/18/1995	60 FR 36715	* 16.8.1206 is the SIP approved Stack Height and Dispersion Techniques rule. 17.8.403 is not SIP approved.
(iv) Administrative Rules of Montana, Subchapter 06, Open Burning
17.8.601	Definitions	12/27/2002	8/24/2006	71 FR 49999
17.8.602	Incorporation by Reference	10/26/2007	1/26/2010	75 FR 3993
17.8.604	Prohibited Open Burning—When Permit Required	12/27/2002	8/24/2006	71 FR 49999	Except (1)(a).
17.8.605	Special Burning Periods	12/27/2002	8/24/2006	71 FR 49999
17.8.606	Minor Open Burning Source Requirements	12/27/2002	8/24/2006	71 FR 49999
17.8.610	Major Open Burning Source Restrictions	12/27/2002	8/24/2006	71 FR 49999
17.8.611	Emergency Open Burning Permits	7/23/1999	8/13/2001	66 FR 42427
17.8.612	Conditional Air Quality Open Burning Permits	12/27/2002	8/24/2006	71 FR 49999
17.8.613	Christmas Tree Waste Open Burning Permits	7/23/1999	8/13/2001	66 FR 42427
17.8.614	Commercial Film Production Open Burning Permits	12/27/2002	8/24/2006	71 FR 49999
17.8.615	Firefighter Training	9/9/1994	8/13/2001	66 FR 42427
(v) Administrative Rules of Montana, Subchapter 07, Permit Construction and Operation of Air Contaminant Sources
17.8.740	Definitions	12/27/2002	11/21/2014	79 FR 69374
17.8.743	Montana Air Quality Permits—When Required	12/27/2002	11/21/2014	79 FR 69374	Approved except the phrase in 17.8.743(1)(b) “asphalt concrete plants, mineral crushers, and”.
17.8.744	Montana Air Quality Permits—General Exclusions	12/27/2002	7/8/2011	76 FR 40237
17.8.745	Montana Air Quality Permits—Exclusion for De Minimis Changes	5/28/2010	2/13/2012	77 FR 7531
17.8.748	New or Modified Emitting Units—Permit Application Requirements	12/27/2002	7/8/2011	76 FR 40237
17.8.749	Conditions For Issuance or Denial of Permit	10/17/2003	7/8/2011	76 FR 40237	(1), (3), (4), (5), (6), and (8) approved with state effective date of 12/27/02. (7) approved with state effective date of 10/17/03.
17.8.752	Emission Control Requirements	12/27/2002	7/8/2011	76 FR 40237
17.8.755	Inspection of Permit	12/27/2002	7/8/2011	76 FR 40237
17.8.756	Compliance with Other Requirements	12/27/2002	7/8/2011	76 FR 40237
17.8.759	Review of Permit Applications	12/23/2005	7/8/2011	76 FR 40237	(1) through (3) approved with state effective date of 10/17/13. (4) through (6) approved with state effective date of 12/23/05.
17.8.760	Additional Review of Permit Applications	12/27/2002	7/8/2011	76 FR 40237
17.8.762	Duration of Permit	12/27/2002	7/8/2011	76 FR 40237
17.8.763	Revocation of Permit	10/17/2003	7/8/2011	76 FR 40237	(1) and (4) approved with state effective date of 12/27/02. (2) and (3) approved with state effective date of 10/17/03.
17.8.764	Administrative Amendment to Permit	12/27/2002	11/21/2014	79 FR 69374
17.8.765	Transfer of Permit	12/27/2002	7/8/2011	76 FR 40237
17.8.767	Incorporation by Reference	6/17/2005	7/8/2011	76 FR 40237	(1)(a) through (c) approved with state effective date of 12/27/02. (1)(d) through (g), (2), (3), and (4) approved with state effective date of 6/17/05.
(vi) Administrative Rules of Montana, Subchapter 08, Prevention of Significant Deterioration of Air Quality
17.8.801	Definitions	10/12/2012	1/29/2015	80 FR 4793
17.8.802	Incorporation by Reference	6/17/2005	7/19/2006	71 FR 40922
17.8.804	Ambient Air Increments	8/23/1996	8/13/2001	66 FR 42427
17.8.805	Ambient Air Ceilings	8/23/1996	8/13/2001	66 FR 42427
17.8.806	Restrictions on Area Classifications	8/23/1996	8/13/2001	66 FR 42427
17.8.807	Exclusions from Increment Consumption	8/23/1996	8/13/2001	66 FR 42427
17.8.808	Redesignation	8/23/1996	8/13/2001	66 FR 42427
17.8.809	Stack Heights	8/23/1996	8/13/2001	66 FR 42427
17.8.818	Review of Major Stationary Source and Major Modifications—Source Applicability and Exemptions	10/12/2012	1/29/2015	80 FR 4793
17.8.819	Control Technology Review	4/9/2004	1/24/2006	71 FR 3770
17.8.820	Source Impact Analysis	8/23/1996	8/13/2001	66 FR 42427
17.8.821	Air Quality Models	4/11/2003	1/24/2006	71 FR 3776
17.8.822	Air Quality Analysis	4/9/2004	1/24/2006	71 FR 3770
17.8.823	Source Information	8/23/1996	8/13/2001	66 FR 42427
17.8.824	Additional Impact Analyses	8/23/1996	8/13/2001	66 FR 42427
17.8.825	Sources Impacting Federal Class I Areas—Additional Requirements	12/27/2002	7/8/2011	76 FR 40237
17.8.826	Public Participation	12/27/2002	7/8/2011	76 FR 40237
17.8.827	Source Obligation	8/23/1996	8/13/2001	66 FR 42427
17.8.828	Innovative Control Technology	8/23/1996	8/13/2001	66 FR 42427
(vii) Administrative Rules of Montana, Subchapter 09, Permit Requirements for Major Stationary Sources or Major Modifications Locating Within Nonattainment Areas
17.8.901	Definitions	10/24/2008	1/29/2010	75 FR 4698
17.8.902	Incorporation by Reference	6/17/2005	7/19/2006	71 FR 40922
17.8.904	When Air Quality Preconstruction Permit Required	12/27/2002	7/8/2011	76 FR 40237
17.8.905	Additional Conditions of Air Quality Preconstruction Permit	4/11/2003	1/24/2006	71 FR 3776
17.8.906	Baseline for Determining Credit for Emissions and Air Quality Offsets	12/27/2002	7/7/2011	76 FR 40237
(viii) Administrative Rules of Montana, Subchapter 10, Preconstruction Permit Requirements for Major Stationary Sources or Major Modifications Locating Within Attainment or Unclassified Areas
17.8.1001	Definitions	8/23/1996	8/13/2001	66 FR 42427
17.8.1002	Incorporation by Reference	6/17/2005	7/19/2006	71 FR 40922
17.8.1004	When Air Quality Preconstruction Permit Required	12/27/2002	7/8/2011	76 FR 40237
17.8.1005	Additional Conditions of Air Quality Pre-construction Permit	12/27/2002	7/8/2011	76 FR 40237
17.8.1006	Review of Specified Sources for Air Quality Impact	8/23/1996	8/13/2001	66 FR 42427
17.8.1007	Baseline for Determining Credit for Emissions and Air Quality Offsets	10/24/2008	1/29/2010	75 FR 4698
(ix) Administrative Rules of Montana, Subchapter 11, Visibility Impact Assessment
17.8.1101	Definitions	8/23/1996	8/13/2001	66 FR 42427
17.8.1102	Incorporation by Reference	10/26/2007	1/26/2010	75 FR 3993
17.8.1103	Applicability—Visibility Requirements	8/23/1996	8/13/2001	66 FR 42427
17.8.1106	Visibility Impact Analysis	12/27/2002	7/8/2011	76 FR 40237
17.8.1107	Visibility Models	8/23/1996	8/13/2001	66 FR 42427
17.8.1108	Notification of Permit Application	8/23/1996	8/13/2001	66 FR 42427
17.8.1109	Adverse Impact and Federal Land Manager	12/27/2002	7/8/2011	76 FR 40237
17.8.1110	Visibility Monitoring	8/23/1996	8/13/2001	66 FR 42427
17.8.1111	Additional Impact Analysis	8/23/1996	8/13/2001	66 FR 42427
(x) Administrative Rules of Montana, Subchapter 13, Conformity
17.8.1301	Definitions	6/4/1999	9/21/2001	66 FR 48561
17.8.1304	Determining Conformity of Transportation Plans, Programs, and Projects to State or Federal Implementation Plans	8/23/1996	9/21/2001	66 FR 48561
17.8.1305	Consultation Requirements: Applicability	6/4/1999	9/21/2001	66 FR 48561
17.8.1306	Consultation Procedures	6/4/1999	9/21/2001	66 FR 48561
17.8.1310	Special Issues	6/4/1999	9/21/2001	66 FR 48561
17.8.1311	Notice Requirements for Non-FHWA/FTA Projects	6/4/1999	9/21/2001	66 FR 48561
17.8.1312	Conflict Resolution	6/4/1999	9/21/2001	66 FR 48561
17.8.1313	Public Consultation Procedures	6/4/1999	9/21/2001	66 FR 48561
(xi) Administrative Rules of Montana, Subchapter 14, Conformity of General Federal Actions
17.8.1401	Definitions	6/4/1999	10/7/2002	67 FR 62392
17.8.1402	Incorporation By Reference	6/4/1999	10/7/2002	67 FR 62392
(xii) Administrative Rules of Montana, Subchapter 16, Emission Control Requirements for Oil and Gas Well Facilities Operating Prior to Issuance of a Montana Air Quality Permit
17.8.1601	Definitions	1/1/2006	11/19/2013	78 FR 69296
17.8.1602	Applicability and Coordination with Montana Air Quality Permit Rules	1/1/2006	11/19/2013	78 FR 69296
17.8.1603	Emission Control Requirements	1/1/2006	11/19/2013	78 FR 69296
17.8.1604	Inspection and Repair Requirements	1/1/2006	11/19/2013	78 FR 69296
17.8.1605	Recordkeeping Requirements	1/1/2006	11/19/2013	78 FR 69296
17.8.1606	Delayed Effective Date	12/23/2005	11/19/2013	78 FR 69296
(xiii) Administrative Rules of Montana, Subchapter 17, Registration of Air Contaminant Sources
17.8.1701	Definitions	4/7/2006	11/19/2013	78 FR 69296
17.8.1702	Applicability	4/7/2006	11/19/2013	78 FR 69296
17.8.1703	Registration Process and Information	4/7/2006	11/19/2013	78 FR 69296
17.8.1704	Registration Fee	4/7/2006	11/19/2013	78 FR 69296
17.8.1705	Operating Requirements: Facility-wide	4/7/2006	11/19/2013	78 FR 69296
17.8.1710	Oil or Gas Well Facilities General Requirements	4/7/2006	11/19/2013	78 FR 69296
17.8.1711	Oil or Gas Well Facilities Emission Control Requirements	4/7/2006	11/19/2013	78 FR 69296
17.8.1712	Oil or Gas Well Facilities Inspection and Repair Requirements	4/7/2006	11/19/2013	78 FR 69296
17.8.1713	Oil or Gas Well Facilities Recordkeeping and Reporting Requirements	4/7/2006	11/19/2013	78 FR 69296
(2) County Specific
(i) Cascade County
7-01	Definitions	10/16/2000	6/12/2001	66 FR 31548
7-02	Prohibited Open Burning—When Permit Required	10/16/2000	6/12/2001	66 FR 31548
7-03	Minor Open Burning Source Requirements	10/16/2000	6/12/2001	66 FR 31548
7-04	Major Open Burning Source Restrictions	10/16/2000	6/12/2001	66 FR 31548
7-05	Special Burning Periods	10/16/2000	6/12/2001	66 FR 31548
7-06	Firefighting Training	10/16/2000	6/12/2001	66 FR 31548
7-07	Conditional Air Quality Open Burning Permits	10/16/2000	6/12/2001	66 FR 31548
7-08	Emergency Open Burning Permits	10/16/2000	6/12/2001	66 FR 31548
7-09	Commercial Film Production Open Burning Permits	10/16/2000	6/12/2001	66 FR 31548
7-10	Fees	10/16/2000	6/12/2001	66 FR 31548
(ii) Flathead County
	Table of Contents, Flathead County Air Pollution Control Program Regulations
Appendix A	Kalispell Air Pollution Control District Map	5/20/1994	3/19/1996	61 FR 11153
Appendix B	Kalispell Air Pollution Control District Description	5/20/1994	3/19/1996	61 FR 11153
Chapter 01	Short Title	5/20/1994	3/19/1996	61 FR 11153
Chapter 02	Declaration of Policy and Purpose	5/20/1994	3/19/1996	61 FR 11153
Chapter 03	Authorities for Program	5/20/1994	3/19/1996	61 FR 11153
Chapter 04	Administration	5/20/1994	3/19/1996	61 FR 11153
Chapter 05	Control Board, Meetings-Duties-Policies	5/20/1994	3/19/1996	61 FR 11153
Chapter 06	Air Quality Staff	5/20/1994	3/19/1996	61 FR 11153
Chapter 07	Inspections	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Sub-Chapter 1	General Definitions	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 201	Definitions	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 202	Materials Prohibited	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 203	Minor Open Burning Source Requirements	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 204	Major Open Burning Source Requirements	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 205	Special Open Burning Periods	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 206	Fire Fighter Training	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 207	Open Burning Disposal of Christmas Tree Waste	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 208	Conditional Air Quality Open Burning Permits	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 209	Emergency Open Burning Permits	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 210	Permit Fees	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Sub-Chapter 3	Voluntary Solid Fuel Burning Device Curtailment Program	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 401	Prohibited Materials for Wood or Coal residential (Solid Fuel Burning Device) Stoves	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Sub-Chapter 5	Kalispell Air Pollution Control District, Intent	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 501	Material To Be Used on Roads and Parking Lots-Standards	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 502	Construction and Demolition Activity	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 503	Pavement of Roads Required	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 504	Pavement of Parking Lots Required	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 505	Street Sweeping and Flushing	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 506	Clearing of land greater than 1/4 acre in size	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 507	Contingency Plan	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Sub-Chapter 6	Columbia Falls Air Pollution Control District—Intent	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 601	Material To Be Used on Roads and Parking Lots-Standards	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 602	Construction and Demolition Activity	5/20/1994	3/19/1996	61 FR 11153
Chapter 08; Sub-Chapter 6, Rule 603	Pavement of Roads Required	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 604	Pavement of Parking Lots Required	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 605	Street Sweeping and Flushing	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 606	Clearing of land greater than 1/4 acre in size	5/20/1994	3/19/1996	61 FR 11153
Chapter 08, Rule 607	Contingency Plan	5/20/1994	3/19/1996	61 FR 11153
Chapter 09	Enforcement, Judicial Review, and Hearings	5/20/1994	3/19/1996	61 FR 11153
Chapter 10	Civil Penalties	5/20/1994	3/19/1996	61 FR 11153
Chapter 11	Severability Clause	5/20/1994	3/19/1996	61 FR 11153
Chapter 12	Amendments and Revisions	5/20/1994	3/19/1996	61 FR 11153
(iii) Lincoln County
75.1.101	Intent	2/1/1996	9/30/1996	61 FR 51014
75.1.102	Definitions	2/1/1996	9/30/1996	61 FR 51014
75.1.103	Selection & Implementation of Contingency Measure Programs	2/1/1996	9/30/1996	61 FR 51014
75.1.201	Intent	2/1/1996	9/30/1996	61 FR 51014
75.1.202	Definitions	2/1/1996	9/30/1996	61 FR 51014
75.1.204	Emission Limits	2/1/1996	9/30/1996	61 FR 51014
75.1.205	Issuance of Air Pollution Alert	2/1/1996	9/30/1996	61 FR 51014
75.1.206	Permits	2/1/1996	9/30/1996	61 FR 51014
75.1.207	Prohibited Materials	2/1/1996	9/30/1996	61 FR 51014
75.1.209	Enforceability	2/1/1996	9/30/1996	61 FR 51014
75.1.301	Intent: Road Dust Control Regulations: Materials to Be used on Roads and Parking Lots	2/1/1996	9/30/1996	61 FR 51014
75.1.302	Definitions	2/1/1996	9/30/1996	61 FR 51014
75.1.303	Emission Limits	2/1/1996	9/30/1996	61 FR 51014
75.1.401	Definitions, Street Sweeping and Flushing	2/1/1996	9/30/1996	61 FR 51014
75.1.402	Emission Limits	2/1/1996	9/30/1996	61 FR 51014
75.1.501	Emission Limits, Dust Control for Log Yards	2/1/1996	9/30/1996	61 FR 51014
75.1.601	Intent, Limiting the Application of Sanding Material	2/1/1996	9/30/1996	61 FR 51014
75.1.602	Application Limits	2/1/1996	9/30/1996	61 FR 51014
75.1.603	Resolution	2/1/1996	9/30/1996	61 FR 51014
75.1.701	Intent, Open Burning Regulations: Management of Open Burning	2/1/1996	9/30/1996	61 FR 51014
75.1.702	Definitions	2/1/1996	9/30/1996	61 FR 51014
75.1.703	Open Burning Control Areas	2/1/1996	9/30/1996	61 FR 51014
75.1.704	Materials Prohibited	2/1/1996	9/30/1996	61 FR 51014
75.1.705	General Open Burning Regulations	2/1/1996	9/30/1996	61 FR 51014
75.1.706	Minor Open Burning Source Requirements	2/1/1996	9/30/1996	61 FR 51014
75.1.707	Major Open Burning Source Requirements	2/1/1996	9/30/1996	61 FR 51014
75.1.708	Trade Waste Burning Requirements	2/1/1996	9/30/1996	61 FR 51014
75.1.709	Licensed Landfill Requirements	2/1/1996	9/30/1996	61 FR 51014
75.1.710	Firefighter Training	2/1/1996	9/30/1996	61 FR 51014
75.1.711	Special Burning Periods	2/1/1996	9/30/1996	61 FR 51014
75.1.712	Open Burning Permit Requirements & Local Restrictions	2/1/1996	9/30/1996	61 FR 51014
75.1.713	Conditional Air Quality Open Burning Permits	2/1/1996	9/30/1996	61 FR 51014
75.1.714	Emergency Open Burning Permits	2/1/1996	9/30/1996	61 FR 51014
75.1.715	Christmas Tree Waste Open Burning Permits	2/1/1996	9/30/1996	61 FR 51014
75.1.716	Commercial Film Production Open Burning Permits	2/1/1996	9/30/1996	61 FR 51014
75.1.717	Prohibited Acts	2/1/1996	9/30/1996	61 FR 51014
75.1.718	Penalties	2/1/1996	9/30/1996	61 FR 51014
75.1.719	Conflict of Ordinances, Effect of Partial Invalidity	2/1/1996	9/30/1996	61 FR 51014
Ordinances, 1470	Ordinance	3/19/1993	8/30/1994	59 FR 44627
Ordinances, 1507	Ordinance	2/1/96	9/30/96	61 FR 51014
1660 Resolution	Lincoln County Health and Environment Regulations	3/23/2006	3/17/2011	76 FR 14584
(iv) Missoula County
1.101	Program Authority and Administration	11/17/2000	11/15/2001	66 FR 57391
1.102	Declaration of policy and purpose	11/17/2000	11/15/2001	66 FR 57391
1.103	Authorities for program	11/17/2000	11/15/2001	66 FR 57391
1.104	Area of jurisdiction	11/17/2000	11/15/2001	66 FR 57391
1.105	Air pollution control board	11/17/2000	11/15/2001	66 FR 57391
1.106	Air quality staff	11/17/2000	11/15/2001	66 FR 57391
1.107	Air quality advisory council	11/17/2000	11/15/2001	66 FR 57391
2.101	Definitions	11/17/2000	11/15/2001	66 FR 57391
3.101	Purpose	11/17/2000	11/15/2001	66 FR 57391
3.102	Particulate matter contingency measures	11/17/2000	11/15/2001	66 FR 57391
3.103	Carbon monoxide contingency measures	11/17/2000	11/15/2001	66 FR 57391
3.104	Early implementation of contingency measures	11/17/2000	11/15/2001	66 FR 57391
4.101	Purpose	11/17/2000	11/15/2001	66 FR 57391
4.102	Applicability	11/17/2000	11/15/2001	66 FR 57391
4.103	General provisions	11/17/2000	11/15/2001	66 FR 57391
4.104	Air pollution control stages	11/17/2000	11/15/2001	66 FR 57391
4.105	Emergency operations	11/17/2000	11/15/2001	66 FR 57391
4.106	Abatement plan for certain sources	11/17/2000	11/15/2001	66 FR 57391
4.107	Enforcement procedure	11/17/2000	11/15/2001	66 FR 57391
4.108	Stage I alert control activities	11/17/2000	11/15/2001	66 FR 57391
4.109	Stage II warning control activities	11/17/2000	11/15/2001	66 FR 57391
4.110	State III emergency control activities	11/17/2000	11/15/2001	66 FR 57391
4.111	Stage IV crisis control activities	11/17/2000	11/15/2001	66 FR 57391
4.112	Contingency measure	11/17/2000	11/15/2001	66 FR 57391
5.101	Inspections	11/17/2000	11/15/2001	66 FR 57391
5.102	Testing requirements	11/17/2000	11/15/2001	66 FR 57391
5.103	Malfunctions	11/17/2000	11/15/2001	66 FR 57391
5.105	Circumvention	11/17/2000	11/15/2001	66 FR 57391
5.106	Public nuisance	11/17/2000	11/15/2001	66 FR 57391
5.112	Compliance with other statutes and rules	11/17/2000	11/15/2001	66 FR 57391
6.101	Definitions	11/17/2000	11/15/2001	66 FR 57391
6.102	Air quality permits required	11/17/2000	11/15/2001	66 FR 57391
6.103	General conditions	11/17/2000	11/15/2001	66 FR 57391
6.105	Air quality permit application requirements	11/17/2000	11/15/2001	66 FR 57391
6.106	Public review of air quality permit application	11/17/2000	11/15/2001	66 FR 57391
6.107	Issuance or denial of an air quality permit	11/17/2000	11/15/2001	66 FR 57391
6.108	Revocation of modification of an air quality permit	11/17/2000	11/15/2001	66 FR 57391
6.109	Transfer of permit	11/17/2000	11/15/2001	66 FR 57391
6.501	Emission control requirements	11/17/2000	11/15/2001	66 FR 57391
6.502	Particulate matter from fuel burning equipment	11/17/2000	11/15/2001	66 FR 57391
6.503	Particulate matter from industrial processes	11/17/2000	11/15/2001	66 FR 57391
6.504	Visible air pollutants	11/17/2000	11/15/2001	66 FR 57391
6.601	Minimum standards	11/17/2000	11/15/2001	66 FR 57391
6.602	Hours of operation	11/17/2000	11/15/2001	66 FR 57391
6.603	Performance tests	11/17/2000	11/15/2001	66 FR 57391
6.604	Hazardous waste incinerators	11/17/2000	11/15/2001	66 FR 57391
6.701	Opacity limits	11/17/2000	11/15/2001	66 FR 57391
6.702	Operation	11/17/2000	11/15/2001	66 FR 57391
6.703	Fuels	11/17/2000	11/15/2001	66 FR 57391
7.101	Definitions	11/17/2000	11/15/2001	66 FR 57391
7.102	Outdoor burning permits required	11/17/2000	11/15/2001	66 FR 57391
7.103	Materials prohibited	11/17/2000	11/15/2001	66 FR 57391
7.104	Burning seasons	11/17/2000	11/15/2001	66 FR 57391
7.105	Restricted areas	11/17/2000	11/15/2001	66 FR 57391
7.106	Minor outdoor burning source requirements	11/17/2000	11/15/2001	66 FR 57391
7.107	Major outdoor burning source requirements	11/17/2000	11/15/2001	66 FR 57391
7.108	Bonfire permits	11/17/2000	11/15/2001	66 FR 57391
7.109	Fire fighter training permits	11/17/2000	11/15/2001	66 FR 57391
7.110	Conditional outdoor burning permits	11/17/2000	11/15/2001	66 FR 57391
7.111	Christmas tree waste outdoor burning permits	11/17/2000	11/15/2001	66 FR 57391
7.112	Emergency outdoor burning permits	11/17/2000	11/15/2001	66 FR 57391
7.113	Commercial film production outdoor burning permits	11/17/2000	11/15/2001	66 FR 57391
7.114	Public notice	11/17/2000	11/15/2001	66 FR 57391
7.115	Outdoor burning permitting actions	11/17/2000	11/15/2001	66 FR 57391
8.101	Definitions	11/17/2000	11/15/2001	66 FR 57391
8.102	General requirements	11/17/2000	11/15/2001	66 FR 57391
8.103	Stationary source requirements	11/17/2000	11/15/2001	66 FR 57391
8.104	Construction sites	11/17/2000	11/15/2001	66 FR 57391
8.105	Agricultural exemption	11/17/2000	11/15/2001	66 FR 57391
8.201	Permits required	11/17/2000	11/15/2001	66 FR 57391
8.202	New roads in the air stagnation zone	11/17/2000	11/15/2001	66 FR 57391
8.203	New parking areas in the air stagnation zone	11/17/2000	11/15/2001	66 FR 57391
8.204	New driveways in the air stagnation zone	11/17/2000	11/15/2001	66 FR 57391
8.205	Unpaved access roads	11/17/2000	11/15/2001	66 FR 57391
8.206	Maintenance of pavement required	11/17/2000	11/15/2001	66 FR 57391
8.207	Paving existing facilities in the air stagnation zone	11/17/2000	11/15/2001	66 FR 57391
8.301	Deicer required	11/17/2000	11/15/2001	66 FR 57391
8.302	Durability requirements	11/17/2000	11/15/2001	66 FR 57391
8.303	Street sweeping requirements	11/17/2000	11/15/2001	66 FR 57391
8.304	Contingency measures	11/17/2000	11/15/2001	66 FR 57391
9.101	Intent	11/17/2000	11/15/2001	66 FR 57391
9.102	Definitions	11/17/2000	11/15/2001	66 FR 57391
9.103	Applicability	11/17/2000	11/15/2001	66 FR 57391
9.104	Fuels	11/17/2000	11/15/2001	66 FR 57391
9.105	Non-alert visible emission standards	11/17/2000	11/15/2001	66 FR 57391
9.106	Prohibition of visible emissions during air pollution alerts and warnings	11/17/2000	11/15/2001	66 FR 57391
9.107	Emissions certification	11/17/2000	11/15/2001	66 FR 57391
9.108	New solid fuel burning devices prohibited	11/17/2000	11/15/2001	66 FR 57391
9.109	Sale of new solid fuel burning devices	11/17/2000	11/15/2001	66 FR 57391
9.110	Installation permits	11/17/2000	11/15/2001	66 FR 57391
9.111	Alert permits	11/17/2000	11/15/2001	66 FR 57391
9.112	Sole source permits	11/17/2000	11/15/2001	66 FR 57391
9.113	Special need permits	11/17/2000	11/15/2001	66 FR 57391
9.114	Temporary sole source permit	11/17/2000	11/15/2001	66 FR 57391
9.115	Permit application requirements	11/17/2000	11/15/2001	66 FR 57391
9.116	Revocation or modification of permit	11/17/2000	11/15/2001	66 FR 57391
9.117	Transfer of permit	11/17/2000	11/15/2001	66 FR 57391
9.118	Removal of solid fuel burning devices upon sale of the property	11/17/2000	11/15/2001	66 FR 57391
9.119	Contingency measures	11/17/2000	11/15/2001	66 FR 57391
10.101	Intent	11/17/2000	11/15/2001	66 FR 57391
10.102	Definitions	11/17/2000	11/15/2001	66 FR 57391
10.103	Oxygenated fuel required	11/17/2000	11/15/2001	66 FR 57391
10.104	Labeling gasoline pumps	11/17/2000	11/15/2001	66 FR 57391
10.105	Oxygenate blending facility requirements	11/17/2000	11/15/2001	66 FR 57391
10.106	Distributor requirements	11/17/2000	11/15/2001	66 FR 57391
10.107	Fueling facility operator requirements	11/17/2000	11/15/2001	66 FR 57391
10.108	Inability to produce oxygenated fuel in extraordinary circumstances	11/17/2000	11/15/2001	66 FR 57391
10.109	Registration fees	11/17/2000	11/15/2001	66 FR 57391
10.110	Contingency measure	11/17/2000	11/15/2001	66 FR 57391
10.201	Regulation of sulfur in fuel	11/17/2000	11/15/2001	66 FR 57391
10.202	Regulation of sulfur in fuel burned within the air stagnation zone	11/17/2000	11/15/2001	66 FR 57391
10.203	Labeling requirements	11/17/2000	11/15/2001	66 FR 57391
10.301	Containers with more than 65,000 gallon capacity	11/17/2000	11/15/2001	66 FR 57391
10.302	Oil-effluent water separators	11/17/2000	11/15/2001	66 FR 57391
10.303	Loading gasoline	11/17/2000	11/15/2001	66 FR 57391
10.304	Exemptions	11/17/2000	11/15/2001	66 FR 57391
11.101	Removal of control devices	11/17/2000	11/15/2001	66 FR 57391
11.102	Operation of motor vehicles	11/17/2000	11/15/2001	66 FR 57391
11.103	Four-cycle gasoline powered vehicles	11/17/2000	11/15/2001	66 FR 57391
14.101	Notice of violation	11/17/2000	11/15/2001	66 FR 57391
14.102	Order to take corrective action	11/17/2000	11/15/2001	66 FR 57391
14.103	Appearance before the control board	11/17/2000	11/15/2001	66 FR 57391
14.104	Other remedies	11/17/2000	11/15/2001	66 FR 57391
14.105	Credible evidence	11/17/2000	11/15/2001	66 FR 57391
14.106	Administrative review	11/17/2000	11/15/2001	66 FR 57391
14.107	Control board hearings	11/17/2000	11/15/2001	66 FR 57391
14.108	Judicial review	11/17/2000	11/15/2001	66 FR 57391
15.101	General provisions	11/17/2000	11/15/2001	66 FR 57391
15.102	Criminal penalties	11/17/2000	11/15/2001	66 FR 57391
15.103	Civil penalties	11/17/2000	11/15/2001	66 FR 57391
15.104	Solid fuel burning device penalties	11/17/2000	11/15/2001	66 FR 57391
15.105	Non-compliance penalties	11/17/2000	11/15/2001	66 FR 57391
Appendix A	Maps	11/17/2000	11/15/2001	66 FR 57391
Appendix B	Missoula's Emergency Episode Avoidance Plan	11/17/2000	11/15/2001	66 FR 57391
Appendix D	Oxygenated fuels program sampling requirements for blending facilities	11/17/2000	11/15/2001	66 FR 57391
List of Acronyms	List of Acronyms	11/17/2000	11/15/2001	66 FR 57391
	Missoula City County Air Pollution Control Program Regulations, Table of Contents, Acronyms and Appendices, Table of Contents
(v) Yellowstone
Regulation 002—Open Burning, A	Definitions	9/24/1999	8/13/2001	66 FR 42427
Regulation 002—Open Burning, B	Incorporation by Reference	9/24/1999	8/13/2001	66 FR 42427
Regulation 002—Open Burning, C	Prohibited Open Burning—When Permit Required	9/24/1999	8/13/2001	66 FR 42427
Regulation 002—Open Burning, D	Minor Open Burning Source Restriction	9/24/1999	8/13/2001	66 FR 42427
Regulation 002—Open Burning, E	Major Open Burning Source Restriction	9/24/1999	8/13/2001	66 FR 42427
Regulation 002—Open Burning, F	Special Burning Periods	9/24/1999	8/13/2001	66 FR 42427
Regulation 002—Open Burning, G	Fire Fighter Training	9/24/1999	8/13/2001	66 FR 42427
Regulation 002—Open Burning, H	Conditional Air Quality Open Burning Permits	6/7/2002	11/5/2003	68 FR 62529
Regulation 002—Open Burning, I	Emergency Open Burning Permits	9/24/1999	8/13/2001	66 FR 42427
Regulation 002—Open Burning, J	Commercial Film Production Open Burning	9/24/1999	8/13/2001	66 FR 42427
Regulation 002—Open Burning, K	Fees	9/24/1999	8/13/2001	66 FR 42427

(d) EPA-approved source-specific requirements.

Title/subject	State effective date	Notice of final rule date	NFR citation
(1) Cascade County
1985 December 5 Stipulation and 1985 October 20 Permit for Montana Refining Company. In the matter of the Montana Refining Company, Cascade County; compliance with ARM 16.8.811, ambient air quality standard for carbon monoxide	12/5/1985	9/7/1990	55 FR 36812
(2) Deer Lodge County
1978 November 16 Order for Anaconda Copper Smelter. In the Matter of the Petition of the Department of Health and Environmental Sciences for an Order adopting a Sulfur Oxides Control Strategy for the Anaconda Copper Smelter at Anaconda, Montana, and requiring the Anaconda Company to comply with the Control Strategy	11/16/1978	1/10/1980	45 FR 2034
(3) Flathead County
Air Quality Permit #2667-M, Dated 1/24/92. Plum Creek Manufacturing, Inc	1/24/1992	4/14/1994	59 FR 17700
Stipulation—A-1 Paving, In the Matter of Compliance of A-1 Paving, Kalispell, Montana	9/17/1993	3/19/1996	61 FR 11153
Stipulation—Equity Supply Company, In the Matter of Compliance of Equity Supply Company	9/17/1993	3/19/1996	61 FR 11153
Stipulation—Flathead Road Department #1, In the Matter of Compliance of Flathead Road Department, Kalispell, Montana	9/17/1993	3/19/1996	61 FR 11153
Stipulation—Flathead Road Department #2, In the Matter of Compliance of Flathead Road Department, Kalispell, Montana	9/17/1993	3/19/1996	61 FR 11153.
Stipulation—Klingler Lumber Company, In the Matter of Compliance of Klinger Lumber Company, Inc., Kalispell, Montana	9/17/1993	3/19/1996	61 FR 11153
Stipulation—McElroy & Wilkens, In the Matter of Compliance of McElroy and Wilkens, Inc., Kalispell, Montana	9/17/1993	3/19/1996	61 FR 11153
Stipulation—Montana Mokko, In the Matter of Compliance of Montana Mokko, Kalispell, Montana	9/17/1993	3/19/1996	61 FR 11153
Stipulation—Pack and Company, In the Matter of Compliance of Pack and Company, Inc., Kalispell, Montana	9/7/1993	3/19/1996	61 FR 11153
Stipulation—Pack Concrete, In the Matter of Compliance of Pack Concrete, Inc., Kalispell, Montana	9/17/1993	3/19/1996	61 FR 11153
Stipulation—Plum Creek, In the Matter of Compliance of Plum Creek Manufacturing, L.P., Kalispell, Montana	9/17/1993	3/19/1996	61 FR 11153
(4) Lewis and Clark County
Total Suspended Particulate NAAQS—East Helena, ASARCO Application for Revisions of Montana State Air Quality Control Implementation Plan—Only as it applies to Total Suspended Particulate	4/24/1979	1/10/1980	45 FR 2034
Sulfur Dioxide NAAQS—Board Orders, Stipulations, Exhibits, and Attachments, Asarco Stipulation—1994 March 15	3/15/1994	1/27/1995	60 FR 5313
Sulfur Dioxide NAAQS—Board Orders, Stipulations, Exhibits, and Attachments, Exhibit A—Asarco Emission Limitations and Conditions, Asarco Incorporated, East Helena, Montana	3/15/1994	1/27/1995	60 FR 5313
Asarco Board Order—1994 March 18. In the Matter of the Application of the Department of Health and Environmental Sciences for Revision of the Montana State Air Quality Control Implementation Plan Relating to Control of Sulfur Dioxide Emissions from the Lead Smelter Located at East Helena, Montana, owned and operated by Asarco Incorporated	3/18/1994	1/27/1995	60 FR 5313
Lead NAAQS—Board Orders, Stipulations, Exhibits, and Attachments, American Chemet Stipulation—1995 June 30	6/30/1995	6/18/2001	66 FR 32760
Lead NAAQS—Board Orders, Stipulations, Exhibits, and Attachments, American Chemet Board Order—1995 August 4	8/4/1995	6/18/2001	66 FR 32760
Lead NAAQS—Board Orders, Stipulations, Exhibits, and Attachments, Exhibit A—American Chemet Emission Limitations and Conditions, American Chemet Corporation, East Helena, Montana	8/4/1995	6/18/2001	66 FR 32760
Lead NAAQS—Board Orders, Stipulations, Exhibits, and Attachments, Asarco Stipulation—1996 June 11	6/11/1996	6/18/2001	66 FR 32760
Lead NAAQS—Board Orders, Stipulations, Exhibits, and Attachments, Asarco Board Order—1996 June 26	6/26/1996	6/18/2001	66 FR 32760
Lead NAAQS—Board Orders, Stipulations, Exhibits, and Attachments, Exhibit A—Asarco Emission Limitations and Conditions with attachments 1-7, Asarco Lead Smelter, East Helena, Montana	6/26/1996	6/18/2001	66 FR 32760
Lead NAAQS—Board Orders, Stipulations, Exhibits, and Attachments, Asarco Stipulation—1998 August 13	8/28/1998	6/18/2001	66 FR 32760
Lead NAAQS—Board Orders, Stipulations, Exhibits, and Attachments, Asarco Board Order—1998 August 28	8/28/1998	6/18/2001	66 FR 32760
Lead NAAQS—Board Orders, Stipulations, Exhibits, and Attachments, Asarco Stipulation—2000 July 18	9/15/2000	6/18/2001	66 FR 32767
Lead NAAQS—Board Orders, Stipulations, Exhibits, and Attachments, Asarco Board Order—2000 September 15	9/15/2000	6/18/2001	66 FR 32767
(5) Lincoln County
Board Order—1994 December 16 (Stimson Lumber). In the Matter of Compliance of Stimson Lumber Company, Libby, Montana	12/16/1994	9/30/1996	61 FR 51014
Air Quality Permit #2627-M Dated 7/25/91. Stimson Lumber Company (formerly Champion International Corp)	3/19/1993	8/30/1994	59 FR 44627
Stipulation—Stimson Lumber. In the Matter of Compliance of Stimson Lumber Company, Libby, Montana	12/16/1994	9/30/1996	61 FR 51014
(6) Missoula County
Air Quality Permit #2303M, Dated 3/20/92. Louisiana-Pacific Corporation	3/20/1992	1/18/1994	59 FR 2537
Air Quality Permit #2589M, Dated 1/23/92. Stone Container Corporation	1/24/1992	1/18/1994	59 FR 2537
(7) Rosebud County
1980 October 22 Permit for Western Energy Company.	10/22/1980	4/26/1985	50 FR 16475
(8) Silver Bow County
Air Quality Permit #1636-06 dated 8/22/96. Rhone-Poulenc Basic Chemicals Company	8/22/1996	12/6/1999	64 FR 68034
Air Quality Permit #1749-05 dated 1/5/94. Montana Resources, Inc	1/5/1994	3/22/1995	60 FR 15056
(9) Yellowstone County
Cenex June 12, 1998 Board Order and Stipulation. In the Matter of the Application of the Department of Health and Environmental Sciences for Revision of the Montana State Air Quality Control Implementation plan Relating to Control of Sulfur Dioxide Emissions in the Billings/Laurel Area	6/12/1998	5/2/2002	67 FR 22168
Cenex June 12, 1998 Exhibit A (with 3/17/00 Revisions) Emission Limitations and Other Conditions	3/17/2000	5/22/2003	68 FR 27908
Cenex March 17, 2000 Board Order and Stipulation. In the Matter of the Application of the Department of Environmental Quality for Revision of the Montana State Air Quality Control Implementation Plan Relating to Control of Sulfur Dioxide Emissions in the Billings/Laurel Area	3/17/2000	5/22/2003	68 FR 27908
Conoco June 12, 1998 Board Order and Stipulation. In the Matter of the Application of the Department of Health and Environmental Sciences for Revision of the Montana State Air Quality Control Implementation plan Relating to Control of Sulfur Dioxide Emissions in the Billings/Laurel Area	6/12/1998	5/2/2002	67 FR 22168
Conoco June 12, 1998 Exhibit A. Emission Limitations and Other Conditions	6/12/1998	5/2/2002	67 FR 22168
Exxon June 12, 1998 Board Order and Stipulation. In the Matter of the Application of the Department of Health and Environmental Sciences for Revision of the Montana State Air Quality Control Implementation Plan Relating to Control of Sulfur Dioxide Emissions in the Billings/Laurel Area	6/12/1998	5/2/2002	67 FR 22168
Exxon June 12, 1998 Exhibit A (with 3/17/00 Revisions). Emission Limitations and Other Conditions	3/17/2000	5/22/2003	68 FR 27908
Exxon March 17, 2000 Board Order and Stipulation. In the Matter of the Application of the Department of Environmental Quality for Revision of the Montana State Air Quality Control Implementation Plan Relating to Control of Sulfur Dioxide Emissions in the Billings/Laurel Area	3/17/2000	5/22/2003	68 FR 27908
Montana Power June 12, 1998 Board Order and Stipulation. In the Matter of the Application of the Department of Health and Environmental Sciences for Revision of the Montana State Air Quality Control Implementation plan Relating to Control of Sulfur Dioxide Emissions in the Billings/Laurel Area	6/12/1998	5/2/2002	67 FR 22168
Montana Power June 12, 1998 Exhibit A, Emission Limitations and Conditions	6/12/1998	5/2/2002	67 FR 22168
Montana Sulphur & Chemical Company June 12, 1998 Board Order and Stipulation. In the Matter of the Application of the Department of Health and Environmental Sciences for Revision of the Montana State Air Quality Control Implementation plan Relating to Control of Sulfur Dioxide Emissions in the Billings/Laurel Area	6/12/1998	5/2/2002	67 FR 22168
Montana Sulphur & Chemical Company June 12, 1998 Exhibit A. Emission Limitations and Other Conditions	6/12/1998	5/2/2002	67 FR 22168
Western Sugar June 12, 1998 Board Order and Stipulation. In the Matter of the Application of the Department of Health and Environmental Sciences for Revision of the Montana State Air Quality Control Implementation plan Relating to Control of Sulfur Dioxide Emissions in the Billings/Laurel Area	6/12/1998	5/2/2002	67 FR 22168.
Western Sugar June 12, 1998 Exhibit A. Emission Limitations and Other Conditions	6/12/1998	5/2/2002	67 FR 22168
Yellowstone Energy Limited Partnership June 12, 1998 Board Order and Stipulation. In the Matter of the Application of the Department of Health and Environmental Sciences for Revision of the Montana State Air Quality Control Implementation Plan Relating to Control of Sulfur Dioxide Emissions in the Billings/Laurel Area	6/12/1998	5/2/2002	67 FR 22168
Yellowstone Energy Limited Partnership June 12, 1998 Exhibit A (with 3/17/00 revisions) Emission Limitations and Other Conditions	3/17/2000	5/22/2003	68 FR 27908
Yellowstone Energy Limited Partnership March 17, 2000 Board Order and Stipulation. In the Matter of the Application of the Department of Environmental Quality for Revision of the Montana State Air Quality Control Implementation Plan Relating to Control of Sulfur Dioxide Emissions in the Billings/Laurel Area	3/17/2000	5/22/2003	68 FR 27908

(e) EPA-approved nonregulatory provisions.

Title/Subject	State effective date	Notice of final rule date	NFR Citation
(1) Statewide
Emergency Episode Avoidance Plan	6/23/2004	1/3/2006	71 FR 19.
Montana State Department of Health and Environmental Sciences, Air Quality Bureau, Sampling and Analytical Procedures,	12/31/1971	1/16/1986	51 FR 2397.
Nonregulatory Provisions, 40 CFR 52.1394, 1997 Ozone Infrastructure Certification	12/22/2009	7/22/2011	76 FR 43918.
Nonregulatory Provisions, Interstate Transport, Rule Declaration Satisfying the Requirements of 110(a)(D)(2)(i) of the CAA for 1997 8-hr Ozone and PM2.5 Standards	2/12/2007	2/26/2008	73 FR 10150.
Infrastructure Requirements for the 1997 and 2006 PM2.5 National Ambient Air Quality Standards	N/A	7/30/2013	78 FR 45864.
Interstate Transport of Pollution for the 2006 PM2.5 NAAQS	N/A	7/30/2013	78 FR 45869.
(2) Cascade County
Board Order—2000 October 16, Approval of Amendment for Cascade County's Air Pollution Control Program	10/16/2000	6/12/2001	66 FR 31548.
Great Falls Carbon Monoxide (CO)—Maintenance Plan, State of Montana Air Quality Control Implementation Plan, Cascade County Carbon Monoxide Limited Maintenance Plan, Chapter 7, Great Falls Carbon Monoxide (CO) Limited Maintenance Plan	12/19/2000	5/9/2002	67 FR 31143.
(3) Flathead County
Board Order—1991 November 15. In the Matter of the Application of the Cities of Columbia Falls and Kalispell and the County of Flathead for Approval of a Local Air Pollution Control Program	11/15/1991	4/14/1994	59 FR 17700.
Board Order—1993 September 17. In the Matter of Compliance of Named Stationary Sources	9/17/1993	3/19/1996	61 FR 11153.
Board Order—1994 May 20. In the Matter of the Application of the Cities of Columbia Falls and Kalispell and the County of Flathead for Approval of a Local Air Pollution Control Program	5/20/1994	3/19/1996	61 FR 11153.
Kalispell Particulate Matter (PM-10) Attainment Plan, PM-10 SIP Commitment, Commitment Letter		3/19/1996	61 FR 11153.
Particulate Matter (PM-10)—Plan Summary, Columbia Falls Particulate Matter (PM-10) Attainment Plan
Particulate Matter (PM-10)—Plan Summary, Plan Summary, Kalispell Particulate Matter (PM-10) Attainment Plan
Resolution 867, Adopting Flathead County Air Pollution Control Program	11/15/1991	4/14/1994	59 FR 17700.
Resolution 867B, Adopting Flathead County Air Pollution Control Program	10/3/1991	3/19/1996	61 FR 11153.
Stipulation—1991 November 15, In the Matter of the Application of the Cities of Columbia Falls and Kalispell and the County of Flathead for Approval of Local Air Pollution Control Program	11/15/1991	4/14/1994	59 FR 17700.
(4) Lewis and Clark County
Lead NAAQS—Plan Summary, Plan Summary, East Helena Lead Attainment Plan
Sulfur Dioxide NAAQS—Plan Summary, Plan Summary, East Helena Sulfur Dioxide (SO2) Attainment Plan
Total Suspended Particulate NAAQS—East Helena, East Helena Section of Chapter 5 of SIP, 4-6-79		1/10/1980	45 FR 2034.
(5) Lincoln County
Board Orders, Board Order—1991 November 15, In the Matter of the Application of the City of Libby and County of Lincoln for Approval of its Local Air Pollution Control Program	11/15/1991	8/30/1994	59 FR 44627.
Board Orders, Board Order—1993 March 19, In the Matter of the Application of the City of Libby and County of Lincoln for Approval of Amendments to their Local Air Pollution Control Program	3/19/1993	8/30/1994	59 FR 44627.
Board Orders, Board Order—1994 December 16, In the Matter of the Application of the City of Libby and County of Lincoln for Approval of Amendments to the Local Air Pollution Control Program	12/16/1994	9/30/1996	61 FR 51014.
Board Orders, Board Order—1996 February 1, In the Matter of the Application of the City of Libby and County of Lincoln for Approval of Amendments to the Local Air Pollution Control Program	2/1/1996	9/30/1996	61 FR 51014.
Board Orders, Board Order; March 23, 2006, In the Matter of the Application of Lincoln County for Approval of Amendments to its Local Air Pollution Control Program	3/23/2006	3/17/2011	76 FR 14584.
Particulate Matter (PM-10)—Plan Summary, Plan Summary, Libby Particulate Matter (PM-10) Attainment Plan		3/17/2011	76 FR 14584.
Resolution, 276	3/19/1993	8/30/1994	59 FR 44627.
Resolution, 377	9/27/1995	9/30/1996	61 FR 51014.
Resolution, 725	3/23/2006	3/17/2011	76 FR 14584.
State of Montana Air Quality Control Implementation Plan, Lincoln County Air Quality Control Program, Chapter 27, Libby PM-10 SIP Commitments, 27.10.18,	12/21/1992	8/30/1994	59 FR 44627.
Stipulation—1991 October 7, In the Matter of the Application of the City of Libby and County of Lincoln for Approval of its Local Air Pollution Control Program	11/15/1991	8/30/1994	59 FR 44627.
Stipulation—1993 March 18, In the Matter of the Application of the City of Libby and County of Lincoln for Approval of Amendments to their Local Air Pollution Control Program	3/19/1993	8/30/1994	59 FR 44627.
(6) Missoula County
Board Order—1991 June 28, In the matter of the Application of the City of Missoula and the County of Missoula for Approval of Amendments to its Local Air Pollution Control Program	1/24/1992	1/18/1994	59 FR 2537.
Board Orders, Board Order—1992 March 20, In the matter of the Application of the City of Missoula and the County of Missoula for Approval of Amendments to its Local Air Pollution Control Program	3/20/1992	1/18/1994	59 FR 2537.
Board Order—1992 September 25, In the matter of the Application of the City of Missoula and the County of Missoula for Approval of Amendments to its Local Air Pollution Control Program relating to the adoption of a Carbon Monoxide Control Plan	9/25/1992	11/8/1994	59 FR 55585.
Board Order—1993 November 19, In the matter of the Application of the City of Missoula and the County of Missoula for Approval of Amendments to its Local Air Pollution Control Program	11/19/1993	12/13/1994	59 FR 64139.
Board Order—1994 September 16, In the matter of the Application of the City of Missoula and the County of Missoula for Approval of Amendments to its Local Air Pollution Control Program	9/16/1994	8/30/1995	60 FR 45051.
Board Order—1997 October 31, In the matter of the Application of the City of Missoula and the County of Missoula for Approval of Amendments to its Local Air Pollution Control Program	10/31/1997	1/3/2000	65 FR 16.
Board Order—2000 November 30, In the matter of the Application of the City of Missoula and the County of Missoula for Approval of Amendments to its Local Air Pollution Control Program	11/17/2000	11/15/2001	66 FR 57391.
Missoula Carbon Monoxide (CO) Maintenance Plan, State of Montana Air Quality Control Implementation Plan, Chapter 32, The Missoula County Carbon Monoxide Redesignation Request and Maintenance Plan	3/7/2005	8/17/2007	72 FR 46158.
Particulate Matter (PM-10)—Plan Summary, Plan Summary, Missoula Particulate Matter (PM-10)—Attainment Plan Summary
Stipulations, Stipulation—1991 April 29, In the matter of the Application of the City of Missoula and the County of Missoula for Approval of Amendments to its Local Air Pollution Control Program	1/24/1992	1/18/1994	59 FR 2537.
(7) Sanders County
Board Order, Board Order—1997 June 20, In the Matter of the Application of The Department of Environmental Quality for Inclusion of a Control Plan for PM-10 Emissions in The Thompson Falls Area Into the Montana State Implementation Plan	6/20/1997	1/22/2004	69 FR 3011.
Maintenance Agreement, Maintenance Agreement—1997 May, Maintenance Agreement Between The City of Thompson Falls, Department of Transportation, and Department of Environmental Quality for Street Sweeping Responsibilities	6/20/1997	1/22/2004	69 FR 3011.
Particulate Matter (PM-10)—Plan Summary, Plan Summary, Thompson Falls Particulate Matter (PM-10) Control Plan
(8) Silver Bow County
Board Order—1991 November 15, In the Matter of the Application of Butte-Silver Bow Council of Commissioners for Approval of its Local Air Pollution Control Program	11/15/1991	3/11/1994	59 FR 11550.
Board Order—1994 May 20, In the Matter of the Application of Butte-Silver Bow Council of Commissioners for Approval of Amendments to its Local Air Pollution Control Program	5/20/1994	3/22/1995	60 FR 15056.
Ordinance 330, Establishing Residential Wood Burning and Idling Diesel Vehicle and Locomotive Requirements	11/15/1991	3/11/1994	59 FR 11550.
Ordinance 468, Contingency Measure Requirements for Liquid De-icers	5/20/1994	3/22/1995	60 FR 15056.
Particulate Matter (PM-10)—Plan Summary, Plan Summary, Butte Particulate Matter (PM-10) Attainment Plan
Resolutions, Resolution 1307, Establishing Sanding and Chip Seal Material Standards and Street Sweeping and Flushing Policies	3/6/1991	3/11/1994	59 FR 11550.
State of Montana Air Quality Control Implementation Plan, Butte/Silver Bow Air Quality Control Program, Chapter 47, Butte PM-10 SIP Commitments, 47.10.18	7/9/1992	3/11/1994	59 FR 11550.
Stipulation—1991 October 7, In the matter of compliance of the City and County of Butte-Silver Bow and the Montana Department of Transportation	11/15/1991	3/11/1994	59 FR 11550.
Stipulation—1991 October 8, In the matter of the Application of Butte-Silver Bow Council of Commissioners for Approval of its Local Air Pollution Control Program	3/20/1992	3/11/1994	59 FR 11550.
(9) Yellowstone County
Billings Carbon Monoxide (CO)—Plan Summary, Plan Summary, Billings Carbon Monoxide (CO) Maintenance Plan
Billings Carbon Monoxide (CO)—Maintenance Plan, State of Montana Air Quality Control Implementation Plan, Yellowstone County Air Pollution Control Program, Chapter 56, Billings Carbon Monoxide (CO) Limited Maintenance Plan	12/19/2000	2/21/2002	67 FR 7966.
Board Order, Board Order—1999 September 24, Approval of Amendments to Yellowstone County's Air Pollution Control Program	9/24/1999	8/13/2001	66 FR 42427.
Sulfur Dioxide—Board Orders, Stipulations, Exhibits and Attachments, 1977 December 1—Stipulation, In the matter of the Proposed Revision of the State Implementation Plan for the Billings Air Quality Maintenance Area	1/25/1978	9/6/1979	44 FR 51977.
Sulfur Dioxide—Board Orders, Stipulations, Exhibits and Attachments, 1978 January 25—Board Order, In the matter of the Proposed Revision of the Montana State Implementation Plan for the Billings Air Quality Maintenance Area	1/25/1978	9/6/1979	44 FR 51977.
Sulfur Dioxide—Board Orders, Stipulations, Exhibits and Attachments, Montana Power June 12, 1998 Exhibit A, Emission Limitations and Other Conditions	6/12/1998	5/2/2002	67 FR 22168.