Direct Implementation Tribal Cooperative Agreements

Active

Assistance listing
66.473
Agency
Grant awards
210 $29,503,224 in federal obligations

Program facts

Also known as
DITCA
Assistance types
  • Cooperative Agreement
  • Project Grant
Treasury accounts
  • 68-0108-0-1-304
  • 68-0103-0-1-304
  • 68-8153-0-1-999
More information

Program details come from SAM.gov Assistance Listings. Updated . Grant award figures come from USAspending.gov.

About this program

The Environmental Protection Agency (EPA) awards cooperative agreements under CFDA 66.473 to federally recognized Indian tribes and eligible intertribal consortia to directly implement federal environmental laws on tribal lands, with the most recent award dated October 1, 2025.

The program funds tribes and intertribal consortia to administer environmental compliance and management activities in Indian country. Recent awards show a strong focus on underground storage tank (UST) program administration—including compliance inspections, facility walkthroughs, and inspector credential maintenance—coupled with drinking water system technical assistance and training. Representative recent awards include support to the Choctaw Nation of Oklahoma for UST compliance assistance and facility inspections ($100 thousand, awarded January 2025); the Inter-Tribal Council of Michigan for UST program management across nine Michigan reservations ($166 thousand, awarded October 2024); and the Yakama Nation for air quality management including monitoring, smoke management plan implementation, and Federal Air Rules implementation ($690 thousand, awarded October 2024). The program also funds activities under the Safe Drinking Water Act, underground injection control permitting and enforcement, pollution prevention technical assistance, and spill prevention compliance programs.

The portfolio comprises 210 awards across a 24-year history since July 2001, with combined federal obligations of $29.5 million. The EPA awarded awards at a variable pace: 4 in 2021, 9 in 2022, 1 in 2023, 11 in 2024, and 3 in 2025 to date. Cooperative agreements dominate the mix at 136 awards (65 percent); Project Grants account for the remaining 35 percent. The Environmental Protection Agency (national level) has issued 169 awards valued at $21.1 million; EPA Region 10 has awarded 6 grants totaling $3 million; EPA Region 5 has awarded 22 grants valued at $2.8 million; EPA Region 6 has awarded 9 grants valued at $2 million; and EPA Region 2 has awarded 4 grants valued at $563 thousand. Award values range from under $15 thousand to approximately $700 thousand, with typical awards in the $80 thousand to $200 thousand range. The program works with tribes to develop work plans consistent with EPA guidance; cooperative agreements are typically awarded within 60 to 120 days from application receipt.

Objective and description

Objective

Direct Implementation Tribal Cooperative Agreements (DITCAs) enable EPA to award cooperative agreements to federally recognized Indian tribes and eligible intertribal consortia to help carry out the Agency's function to directly implement Federal env

Description

EPA works to protect human health and the environment of federally recognized tribes by supporting implementation of federal environmental laws, with a special emphasis on helping tribes administer their own environmental programs. These efforts are consistent with the federal trust responsibility, the government-to-government relationship, and EPA's 1984 Indian Policy.

Eligibility

Applicant eligibility

DITCAs may be awarded to: (1) Federally Recognized Indian Tribal Government, and (2) intertribal consortia consistent with applicable provisions. In order for an intertribal consortium to be eligible to receive cooperative agreements under this authority, an intertribal consortium should be consistent with the provisions in 40 C.F.R. Part 35 Subpart B (Tribal Grants). See "EPA's Direct Implementation of Federal Environmental Programs in Indian Country", which can be found at: https://www.epa.gov/tribal/epas-direct-implementation-federal-environmental-programs-indian-country.

Beneficiary eligibility

Federally Recognized Indian Tribal Government and intertribal consortia consistent with applicable provisions.

Uses of assistance

DITCAs assist Tribes in helping EPA directly implement Federal environmental programs required or authorized by law in the absence of an acceptable Tribal program and may only be awarded to Tribes to assist the Administrator in directly implementing Federal environmental programs for Indian Tribes required or authorized by law. For example, activities under the following programs may be eligible for DITCA funding: 1) the National Pollutant Discharge Elimination System permit program under the Clean Water Act. 2) Implementation plan development and the Title V permit program under the Clean Air Act. 3) The Public Water System program and the Underground Injection Control program under the Safe Drinking Water Act. 4) The Underground Storage Tank program and the Subtitle C permit program under the Resource Conservation and Recovery Act. 5) The Certification and Training program for pesticide applicators under the Federal Insecticide, Fungicide, and Rodenticide Act. 6) The Lead-Based Paint program under the Toxic Substances Control Act. Assistance agreement awards under this program may involve or relate to geospatial information. Further information regarding geospatial information may be obtained by viewing the following website: Geospatial Resources at EPA (https://www.epa.gov/geospatial).

Use restrictions

Limitations on DITCA awards include: (1) The statutory authority for DITCA is found in appropriations acts. In the event the appropriation authority is extended by continuing resolution(s), the DITCA authority will also be extended. (2) The project period of the DITCA may extend beyond the period of the appropriations act under which it was created, but all funds must be awarded prior to the expiration of the appropriations act authorizing the DITCA. (3) DITCA-funded personnel may not perform inherently Federal functions. (4) EPA personnel can provide assistance to DITCA representatives based on the written DITCA work plan, which may include daily direction. EPA cannot treat DITCA representatives as EPA employees by participating in hiring, disciplining, or firing decisions. (5) DITCA-funded personnel cannot operate vehicles that are either owned or leased by the Federal government. This program makes Federal awards on a discretionary basis. A discretionary award means an award in which the Federal awarding agency, in keeping with specific statutory authority that enables the agency to exercise judgement ("discretion"), selects the recipient and/or the amount of Federal funding awarded through a competitive process or based on merit of proposals. A discretionary award may be selected on a non-competitive basis, as appropriate. For further information, please contact the Headquarters or regional office.

Length and time phasing of assistance

EPA normally awards cooperative agreements for periods of 12 to 36 months. The term of the grant shall be determined at the time of award.

How to apply

Preapplication coordination

For non-competitive awards, EPA will work with Tribes and Intertribal Consortia to develop work plans consistent with program guidance and any regulations that govern the implementation of the relevant Federal environmental program. For additional information, contact the individual(s) listed as "Information Contacts"

Application procedure

Issuing office will provide location of application procedure details as appropriate.

Criteria for selecting proposals

Cooperative agreements may be awarded to Tribes which submit applications consistent with EPA regulations and guidance. EPA will work with Tribes and Intertribal consortia to develop work plans consistent with program guidance and any regulations that govern the implementation of the relevant Federal environmental program.

Award procedure

EPA will review each application to determine the adequacy of the application in relation to EPA's grant regulations (2 CFR 200 and 1500) and other applicable program regulations and guidance. If the application is approved, EPA will award a cooperative agreement up to the reasonable and necessary cost of the approved work plan.

Time to approval or disapproval

Cooperative agreements are usually awarded within 60 to 120 days from the date of application receipt.

Appeals

Disputes will be resolved under 2 CFR 1500 Subpart E, as applicable.

Grant awards

Award Recipient Federal obligations Awarded
With funding made available through section 1459A of the safe drinking water act (SDWA), as amended by the 2016 water… 00E06077 Inter-Tribal Council Of Michigan Inc. $462,782
This proposed project consists of creating a tribal certified water operator technical assistance and training… 00E06076 Inter-Tribal Council Of Michigan Inc. $250,881
This agreement provides support to the choctaw nation of oklahoma (choctaw nation) to implement a program that… 02F79201 Choctaw Nation Of Oklahoma $100,000
Technical assistance and training will be provided to enhance the knowledge of the seneca nation community water system… 97256104 Seneca Nation Of Indians $175,592
Technical assistance and training will be provided to enhance the knowledge of the saint regis mohawk tribe community… 97239804 Saint Regis Mohawk Tribe $138,186
This agreement provides support to the red lake chippewa implement its program to manage underground storage tanks on… 96595809 Red Lake Band Of Chippewa Indians $98,500
This assistance agreement provides support to the inter-tribal council of michigan to implement and manage its'… 96589410 Inter-Tribal Council Of Michigan Inc. $166,000
This agreement provides support to the oneida nation to implement its program to manage underground storage tanks on… 96583510 Oneida Nation $161,000
The yakama nation will continue to develop their air quality management capabilities and program through outreach… 02J70901 Confederated Tribes And Bands Of The Yakama Nation $690,000
This agreement provides financial assistance to the recipient for the implementation of its program to ensure that… 02F63201 Osage Nation $458,916

Latest 10 of 210 listed here. See the rest on GovTribe.

Top recipients by federal obligations

Rank Recipient Federal obligations Share
1 NEZ Perce Tribe $7,032,080 24%
2 Confederated Tribes And Bands Of The Yakama Nation $5,090,450 17%
3 Inter-Tribal Council Of Michigan Inc. $3,202,275 11%
4 Osage Nation $1,712,216 6%
5 Oneida Nation $1,230,613 4%
6 Seneca Nation Of Indians $953,269 3%
7 Minnesota Chippewa Tribe - White Earth Band $782,847 3%
8 Leech Lake Band Of Ojibwe $705,750 2%
9 Red Lake Band Of Chippewa Indians $696,000 2%
10 Mille Lacs Band Of Ojibwe $638,500 2%

10 of 51 recipients listed here. See the rest on GovTribe.

Federal obligations by fiscal year

Fiscal year Federal obligations
FY2025 $1,835,063
FY2024 $1,476,128
FY2023 $886,094
FY2022 $1,472,500
FY2021 $1,608,419
FY2020 $1,001,066
FY2019 $1,006,847
FY2018 $1,202,827
FY2017 $1,078,423
FY2016 $1,287,604
FY2015 $1,326,739
FY2014 $1,182,248
FY2013 $559,003
FY2012 $2,500,788
FY2011 $2,009,085
FY2010 $900,189
FY2009 $1,119,624
FY2008 $2,288,635
FY2007 $1,289,570
FY2006 $1,000,628
FY2005 $466,285
FY2004 $807,103
FY2003 $136,966
FY2002 $626,367
FY2001 $353,723
Show all 25

Quick answers

What is Assistance Listing 66.473?

Assistance Listing 66.473 is Direct Implementation Tribal Cooperative Agreements, a federal grant program run by Environmental Protection Agency.

What is the CFDA number for Direct Implementation Tribal Cooperative Agreements?

Its CFDA number is 66.473: Assistance Listing numbers were called CFDA numbers before 2018.

How much funding has Assistance Listing 66.473 awarded?

210 grant awards under 66.473 have obligated $29,503,224 in federal funds to 51 recipients.

Who receives the most funding from 66.473?

The recipients obligated the most under Direct Implementation Tribal Cooperative Agreements are NEZ Perce Tribe ($7,032,080), Confederated Tribes And Bands Of The Yakama Nation ($5,090,450) and Inter-Tribal Council Of Michigan Inc. ($3,202,275).

How much did 66.473 obligate in fiscal year 2025?

Grants under 66.473 obligated $1,835,063 in federal funds in fiscal year 2025.

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