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Clean Diesel

Clean Diesel Tribal Grants

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2018/2019 Tribal Request for Applications OPEN DEADLINE - APRIL 3, 2019

EPA’s Office of Transportation and Air Quality is soliciting applications nationwide for Tribal projects that achieve significant reductions in diesel emissions and diesel emissions exposure, particularly from fleets located in areas designated as having poor air quality. This funding opportunity has been amended to increase the total amount of funding available from $2 million to $4 million. Applicants may request up to $800,000 in federal funding per application.

Applications must be received by Wednesday, April 3, 2019, at 11:59 p.m. Eastern Time (ET) in order to be considered for funding. Application packages must be submitted electronically to EPA through

Important Dates

Activity Date
Tribal Request for Applications (RFA) (PDF) open
(86 pp, 1 M, June 2018, Revised August 2018 and February 2019)

Tuesday, June 5, 2018

(4 pp, 232 K, August 28, 2018)
August 28, 2018
(3 pp, 121 K, February 28, 2019)
February 28, 2019
Webinar for Applicants:
(35 pp, 708 K, February 2019)
Thursday, February 21, 2019
(10 pp, 279 K, March 13, 2019):
Deadline for Submittal of Questions
Friday, March 15, 2019
        4:00 p.m. (ET)
Anticipated Final Posting of FAQ Document
Wednesday, March 20, 2019
Application Deadline
Wednesday, April 3, 2019
        11:59 p.m. Eastern Time (ET)
Anticipated Notification of Selected Applicants
Friday, May 3, 2019
Anticipated Funding of Awards June - August 2019

Supporting Information for RFA


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Frequently Asked Questions

All applicants are encouraged to review the Tribal Frequently Asked Questions (FAQ) (PDF) (10 pp, 279 K, March 13, 2019) for further clarification of this Request for Applications.   Please e-mail your questions to and type "Tribal RFA Question" in the subject line. The FAQ document will be updated weekly during the application period.

See the deadline for submitting questions and the final posting date for the FAQ document in the Important Dates section above. All questions and answers, including those from all webinar information sessions, will be added to this document.

Eligible Applicants

Under this solicitation, only tribal governments (or intertribal consortiums) or Alaskan native villages, which have jurisdiction over transportation or air quality, are eligible to apply for Tribal Clean Diesel grants.

Tribal agencies are defined as federally recognized Indian tribal governments, which are any Indian tribe, band, nation, or other organized group or community (including Native villages) certified by the Secretary of the Interior as eligible for the special programs and services provided through the Bureau of Indian Affairs, as well as any organization or intertribal consortium that represents federally recognized tribes.

For the purposes of Clean Diesel Tribal Grants, “intertribal consortium” is defined as a partnership between two or more tribes that is authorized by the governing bodies of those tribes to apply for and receive assistance under this program. Intertribal consortia are eligible to receive assistance under this program only if the consortium demonstrates that all members of the consortium meet the eligibility requirements for the program and they authorize the consortium to apply for and receive assistance by submitting to EPA documentation of (1) the existence of the partnership between Indian tribal governments, and (2) authorization of the consortium by all its members to apply for and receive the assistance.

Please refer to the full RFA for specific information about this competition.

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Eligible Uses of Funding

Eligible diesel vehicles, engines and equipment may include:

  • School buses
  • Class 5 – Class 8 heavy-duty highway vehicles
  • Locomotive engines
  • Marine engines
  • Nonroad engines, equipment or vehicles used in construction, handling of cargo (including at ports or airports), agriculture, mining or energy production (including stationary generators and pumps).

Grant funds may be used for clean diesel projects including:

Funds awarded under this program cannot be used to fund emissions reductions mandated under federal law. Equipment used for testing emissions or fueling infrastructure is not eligible for funding.

Please refer to the full RFA for specific information about this competition.

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Grant Process

The RFA includes information on how to prepare and submit an application package. The application package must be received by the deadline and include the following information:

  • Project Narrative (no more than 11 pages)
  • Standard Form SF 424 – Application for Federal Assistance
  • Standard Form SF 424A – Budget Information
  • Standard Form 424B - Non-Construction Programs
  • Lobbying Form
  • EPA Form 4700-4 - Pre-Award Compliance Review
  • EPA Form 5700-54 - Key Contacts Form
  • Applicant Fleet Description information (not included in page limit)
  • Best Achievable Technology Analysis, if applicable (not included in page limit)
  • Cost-Share Commitment Letters, if applicable (not included in page limit)
  • Letters of Support/Partnership, if applicable (not included in page limit)
  • Mandated Measures Justification Supporting Information, if applicable (not included in page limit)

After the closing date, all eligible applications will be reviewed and ranked. Selected projects may be fully or partially funded.

Please refer to Appendix A of the RFA for specific instructions on downloading an application package from

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Tools and Resources for Applicants

Reporting Templates for Grantees

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