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Training, Investigations, and Special Purpose Activities of Federally-Recognized Indian Tribes Consistent With the Clean Air Act (CAA), Tribal Sovereignty and the Protection and Management of Air Quality

Program Information

Popular name

Tribal CAA 103 Project Grants

Program Number

66.038

Sub-agency

N/A

Program objective

To support Federally-recognized Indian Tribes' efforts to understand, assess and characterize air quality; design methods and plans to protect and improve air quality on tribal lands through surveys, studies, research, training, investigations, and special purpose activities. To ensure tribes have appropriate levels of support and opportunity to understand their air quality and take proactive measures to preserve, restore and protect air quality for their reservations and other lands over which they have jurisdiction through Tribal program implementation, CAA implementation, radiation protection, mobile source controls, and voluntary programs to address outdoor and indoor air and other concerns. To ensure that all Tribes have the tools they need to understand and participate in local, regional and national issues, regulatory and policy developments, and to protect their air quality from activities off the reservation that may affect or impact them. To improve the ability of tribes to understand, define, design and participate in activities that affect their air quality.

Program expenditures, by FY (2023 - 2025)

This chart shows obligations for the program by fiscal year. All data for this chart was provided by the administering agency and sourced from SAM.gov, USASpending.gov, and Treasury.gov.

For more information on each of these data sources, please see the About the data page.

Additional program information

  1. 2016

    No content available. Program accomplishments of the tribes utilizing these funds can best be found in the annual Status of Tribal Air Report, which is a product of the National Tribal Air Association. According to this report there are 85 tribes operating Air monitors now, and 84 tribes with recently completed or updated Emissions inventories. 48 tribes have non regulatory Treatment in a Manner Similar to a State (TAS), while 10 tribes have moved forward with regulatory TAS.

  2. 2017

    83 tribes operating air monitors, 80 tribes with emissions inventories, 49 tribes with non-regulatory TAS, 10 tribes with regulatory TAS

  3. 2018

    82 tribes with section 103 grants, 85 tribes operating air monitors, 78 tribes with completed emissions inventories, 52 tribes with nonregulatory tas, 10 tribes with regulatory tas (as per STAR report).

  4. 2019

    86 tribes operating air monitors, 73 tribes with emissions inventories, 53 tribes with non-regulator Treatment as a State(TAS), 10 tribes with regulatory TAS.

  5. 2024

    89 tribes operating air monitors, 77 tribes with emissions inventories, 61 tribes with non-regulator Treatment as a State (TAS), 10 tribes with regulatory TAS. 55 tribes with 103 grants.

Single Audit Applies (2 CFR Part 200 Subpart F):

For additional information on single audit requirements for this program, review the current Compliance Supplement.

OMB is working with the U.S. Government Accountability Office (GAO) and agency offices of inspectors general to include links to relevant oversight reports. This section will be updated once this information is made available.

2 CFR 200 and 1500 (EPA Uniform Administrative Requirements, Cost Principles, and Audit Requirements for Federal Awards; 40 CFR Part 33 (Participation by Disadvantaged Business Enterprises in United States Environmental Protection Agency Programs).

Program details

Program types

Eligible beneficiaries

  • Federally Recognized Indian Tribal Governments

Additional resources