(a) The regulations in this part identify those provisions of the Clean Air Act (Act) for which Indian tribes are or may be treated in the same manner as States. In general, these regulations authorize eligible tribes to have the same rights and responsibilities as States under the Clean Air Act and authorize EPA approval of tribal air quality programs meeting the applicable minimum requirements of the Act.

(b) Nothing in this part shall prevent an Indian tribe from establishing additional or more stringent air quality protection requirements not inconsistent with the Act.

(a) Clean Air Act or Act means those statutory provisions in the United States Code at 42 U.S.C. 7401, et seq.

(b) Federal Indian Reservation, Indian Reservation or Reservation means all land within the limits of any Indian reservation under the jurisdiction of the United States government, notwithstanding the issuance of any patent, and including rights-of-way running through the reservation.

(c) Indian tribe or tribe means any Indian tribe, band, nation, or other organized group or community, including any Alaska Native village, which is federally recognized as eligible for the special programs and services provided by the United States to Indians because of their status as Indians.

(d) Indian Tribe Consortium or Tribal Consortium means a group of two or more Indian tribes.

(e) State means a State, the District of Columbia, the Commonwealth of Puerto Rico, the Virgin Islands, Guam, and American Samoa and includes the Commonwealth of the Northern Mariana Islands.

Tribes meeting the eligibility criteria of § 49.6 shall be treated in the same manner as States with respect to all provisions of the Clean Air Act and implementing regulations, except for those provisions identified in § 49.4 and the regulations that implement those provisions.

Tribes will not be treated as States with respect to the following provisions of the Clean Air Act and any implementing regulations thereunder:

(a) Specific plan submittal and implementation deadlines for NAAQS-related requirements, including but not limited to such deadlines in sections 110(a)(1), 172(a)(2), 182, 187, 189, and 191 of the Act.

(b) The specific deadlines associated with the review and revision of implementation plans related to major fuel burning sources in section 124 of the Act.

(c) The mandatory imposition of sanctions under section 179 of the Act because of a failure to submit an implementation plan or required plan element by a specific deadline, or the submittal of an incomplete or disapproved plan or element.

(d) The provisions of section 110(c)(1) of the Act.

(e) Specific visibility implementation plan submittal deadlines established under section 169A of the Act.

(f) Specific implementation plan submittal deadlines related to interstate commissions under sections 169B(e)(2), 184(b)(1) and (c)(5) of the Act. For eligible tribes participating as members of such commissions, the Administrator shall establish those submittal deadlines that are determined to be practicable or, as with other non-participating tribes in an affected transport region, provide for Federal implementation of necessary measures.

(g) Any provisions of the Act requiring as a condition of program approval the demonstration of criminal enforcement authority or any provisions of the Act providing for the delegation of such criminal enforcement authority. Tribes seeking approval of a Clean Air Act program requiring such demonstration may receive program approval if they meet the requirements of § 49.8.

(h) The specific deadline for the submittal of operating permit programs in section 502(d)(1) of the Act.

(i) The mandatory imposition of sanctions under section 502(d)(2)(B) because of failure to submit an operating permit program or EPA disapproval of an operating permit program submittal in whole or part.

(j) The “2 years after the date required for submission of such a program under paragraph (1)” provision in section 502(d)(3) of the Act.

(k) Section 502(g) of the Act, which authorizes a limited interim approval of an operating permit program that substantially meets the requirements of Title V, but is not fully approvable.

(l) The provisions of section 503(c) of the Act that direct permitting authorities to establish a phased schedule assuring that at least one-third of the permit applications submitted within the first full year after the effective date of an operating permit program (or a partial or interim program) will be acted on by the permitting authority over a period not to exceed three years after the effective date.

(m) The provisions of section 507(a) of the Act that specify a deadline for the submittal of plans for establishing a small business stationary source technical and environmental compliance assistance program.

(n) The provisions of section 507(e) of the Act that direct the establishment of a Compliance Advisory Panel.

(o) The provisions of section 304 of the Act that, read together with section 302(e) of the Act, authorize any person who provides the minimum required advance notice to bring certain civil actions in the Federal district courts against States in their capacity as States.

(p) The provisions of section 502(b)(6) of the Act that require that review of a final permit action under the Title V permitting program be “judicial” and “in State court,” and the provisions of section 502(b)(7) of the Act that require that review of a failure on the part of the permitting authority to act on permit applications or renewals by the time periods specified in section 503 of the Act be “judicial” and “in State court.”

(q) The provision of section 105(a)(1) that limits the maximum Federal share for grants to pollution control agencies to three-fifths of the cost of implementing programs for the prevention and control of air pollution or implementation of national primary and secondary ambient air quality standards.

Any tribe may request that the Administrator specify additional provisions of the Clean Air Act for which it would be inappropriate to treat tribes in general in the same manner as States. Such request should clearly identify the provisions at issue and should be accompanied with a statement explaining why it is inappropriate to treat tribes in the same manner as States with respect to such provisions.

Sections 301(d)(2) and 302(r), 42 U.S.C. 7601(d)(2) and 7602(r), authorize the Administrator to treat an Indian tribe in the same manner as a State for the Clean Air Act provisions identified in § 49.3 if the Indian tribe meets the following criteria:

(a) The applicant is an Indian tribe recognized by the Secretary of the Interior;

(b) The Indian tribe has a governing body carrying out substantial governmental duties and functions;

(c) The functions to be exercised by the Indian tribe pertain to the management and protection of air resources within the exterior boundaries of the reservation or other areas within the tribe's jurisdiction; and

(d) The Indian tribe is reasonably expected to be capable, in the EPA Regional Administrator's judgment, of carrying out the functions to be exercised in a manner consistent with the terms and purposes of the Clean Air Act and all applicable regulations.

(a) An Indian tribe may apply to the EPA Regional Administrator for a determination that it meets the eligibility requirements of § 49.6 for Clean Air Act program approval. The application shall concisely describe how the Indian tribe will meet each of the requirements of § 49.6 and should include the following information:

(1) A statement that the applicant is an Indian tribe recognized by the Secretary of the Interior.

(2) A descriptive statement demonstrating that the applicant is currently carrying out substantial governmental duties and powers over a defined area. This statement should:

(i) Describe the form of the tribal government;

(ii) Describe the types of government functions currently performed by the tribal governing body such as, but not limited to, the exercise of police powers affecting (or relating to) the health, safety, and welfare of the affected population; taxation; and the exercise of the power of eminent domain; and

(iii) Identify the source of the tribal government's authority to carry out the governmental functions currently being performed.

(3) A descriptive statement of the Indian tribe's authority to regulate air quality. For applications covering areas within the exterior boundaries of the applicant's reservation the statement must identify with clarity and precision the exterior boundaries of the reservation including, for example, a map and a legal description of the area. For tribal applications covering areas outside the boundaries of a reservation the statement should include:

(i) A map or legal description of the area over which the application asserts authority; and

(ii) A statement by the applicant's legal counsel (or equivalent official) that describes the basis for the tribe's assertion of authority (including the nature or subject matter of the asserted regulatory authority) which may include a copy of documents such as tribal constitutions, by-laws, charters, executive orders, codes, ordinances, and/or resolutions that support the tribe's assertion of authority.

(4) A narrative statement describing the capability of the applicant to administer effectively any Clean Air Act program for which the tribe is seeking approval. The narrative statement must demonstrate the applicant's capability consistent with the applicable provisions of the Clean Air Act and implementing regulations and, if requested by the Regional Administrator, may include:

(i) A description of the Indian tribe's previous management experience which may include the administration of programs and services authorized by the Indian Self-Determination and Education Assistance Act (25 U.S.C. 450, et seq.), the Indian Mineral Development Act (25 U.S.C. 2101, et seq.), or the Indian Sanitation Facility Construction Activity Act (42 U.S.C. 2004a);

(ii) A list of existing environmental or public health programs administered by the tribal governing body and a copy of related tribal laws, policies, and regulations;

(iii) A description of the entity (or entities) that exercise the executive, legislative, and judicial functions of the tribal government;

(iv) A description of the existing, or proposed, agency of the Indian tribe that will assume primary responsibility for administering a Clean Air Act program (including a description of the relationship between the existing or proposed agency and its regulated entities);

(v) A description of the technical and administrative capabilities of the staff to administer and manage an effective air quality program or a plan which proposes how the tribe will acquire administrative and technical expertise. The plan should address how the tribe will obtain the funds to acquire the administrative and technical expertise.

(5) A tribe that is a member of a tribal consortium may rely on the expertise and resources of the consortium in demonstrating under paragraph (a)(4) of this section that the tribe is reasonably expected to be capable of carrying out the functions to be exercised consistent with § 49.6(d). A tribe relying on a consortium in this manner must provide reasonable assurances that the tribe has responsibility for carrying out necessary functions in the event the consortium fails to.

(6) Where applicable Clean Air Act or implementing regulatory requirements mandate criminal enforcement authority, an application submitted by an Indian tribe may be approved if it meets the requirements of § 49.8.

(7) Additional information required by the EPA Regional Administrator which, in the judgment of the EPA Regional Administrator, is necessary to support an application.

(8) Where the applicant has previously received authorization for a Clean Air Act program or for any other EPA-administered program, the applicant need only identify the prior authorization and provide the required information which has not been submitted in the previous application.

(b) A tribe may simultaneously submit a request for an eligibility determination and a request for approval of a Clean Air Act program.

(c) A request for Clean Air Act program approval must meet any applicable Clean Air Act statutory and regulatory requirements. A program approval request may be comprised of only partial elements of a Clean Air Act program, provided that any such elements are reasonably severable, that is, not integrally related to program elements that are not included in the plan submittal, and are consistent with applicable statutory and regulatory requirements.

To the extent that an Indian tribe is precluded from asserting criminal enforcement authority, the Federal Government will exercise primary criminal enforcement responsibility. The tribe, with the EPA Region, shall develop a procedure by which the tribe will provide potential investigative leads to EPA and/or other appropriate Federal agencies, as agreed to by the parties, in an appropriate and timely manner. This procedure shall encompass all circumstances in which the tribe is incapable of exercising applicable enforcement requirements as provided in § 49.7(a)(6). This agreement shall be incorporated into a Memorandum of Agreement with the EPA Region.

(a) The EPA Regional Administrator shall process a request of an Indian tribe submitted under § 49.7 in a timely manner. The EPA Regional Administrator shall promptly notify the Indian tribe of receipt of the application.

(b) Within 30 days of receipt of an Indian tribe's initial, complete application, the EPA Regional Administrator shall notify all appropriate governmental entities.

(1) For tribal applications addressing air resources within the exterior boundaries of the reservation, EPA's notification of other governmental entities shall specify the geographic boundaries of the reservation.

(2) For tribal applications addressing non-reservation areas, EPA's notification of other governmental entities shall include the substance and bases of the tribe's jurisdictional assertions.

(c) The governmental entities shall have 30 days to provide written comments to EPA's Regional Administrator regarding any dispute concerning the boundary of the reservation. Where a tribe has asserted jurisdiction over non-reservation areas, appropriate governmental entities may request a single 30-day extension to the general 30-day comment period.

(d) In all cases, comments must be timely, limited to the scope of the tribe's jurisdictional assertion, and clearly explain the substance, bases, and extent of any objections. If a tribe's assertion is subject to a conflicting claim, the EPA Regional Administrator may request additional information from the tribe and may consult with the Department of the Interior.

(e) The EPA Regional Administrator shall decide the jurisdictional scope of the tribe's program. If a conflicting claim cannot be promptly resolved, the EPA Regional Administrator may approve that portion of an application addressing all undisputed areas.

(f) A determination by the EPA Regional Administrator concerning the boundaries of a reservation or tribal jurisdiction over non-reservation areas shall apply to all future Clean Air Act applications from that tribe or tribal consortium and no further notice to governmental entities, as described in paragraph (b) of this section, shall be provided, unless the application presents different jurisdictional issues or significant new factual or legal information relevant to jurisdiction to the EPA Regional Administrator.

(g) If the EPA Regional Administrator determines that a tribe meets the requirements of § 49.6 for purposes of a Clean Air Act provision, the Indian tribe is eligible to be treated in the same manner as a State with respect to that provision, to the extent that the provision is identified in § 49.3. The eligibility will extend to all areas within the exterior boundaries of the tribe's reservation, as determined by the EPA Regional Administrator, and any other areas the EPA Regional Administrator has determined to be within the tribe's jurisdiction.

(h) Consistent with the exceptions listed in § 49.4, a tribal application containing a Clean Air Act program submittal will be reviewed by EPA in accordance with applicable statutory and regulatory criteria in a manner similar to the way EPA would review a similar State submittal.

(i) The EPA Regional Administrator shall return an incomplete or disapproved application to the tribe with a summary of the deficiencies.

A State Clean Air Act program submittal shall not be disapproved because of failure to address air resources within the exterior boundaries of an Indian Reservation or other areas within the jurisdiction of an Indian tribe.

Notwithstanding any determination made on the basis of authorities granted the Administrator under any other provision of this section, the Administrator, pursuant to the discretionary authority explicitly granted to the Administrator under sections 301(a) and 301(d)(4):

(a) Shall promulgate without unreasonable delay such Federal implementation plan provisions as are necessary or appropriate to protect air quality, consistent with the provisions of sections 304(a) and 301(d)(4), if a tribe does not submit a tribal implementation plan meeting the completeness criteria of 40 CFR part 51, appendix V, or does not receive EPA approval of a submitted tribal implementation plan.

(b) May provide up to 95 percent of the cost of implementing programs for the prevention and control of air pollution or implementation of national primary and secondary ambient air quality standards. After two years from the date of each tribe's initial grant award, the maximum Federal share will be reduced to 90 percent, as long as the Regional Administrator determines that the tribe meets certain economic indicators that would provide an objective assessment of the tribe's ability to increase its share. The Regional Administrator may increase the maximum Federal share to 100 percent if the tribe can demonstrate in writing to the satisfaction of the Regional Administrator that fiscal circumstances within the tribe are constrained to such an extent that fulfilling the match would impose undue hardship.