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Clean Diesel

Clean Diesel Tribal Grants

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2017 Tribal Request for Proposals Closed

EPA anticipates the release of the 2018 Clean Diesel Tribal Request for Proposals in May 2018.

EPA’s Office of Transportation and Air Quality solicited proposals 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. EPA anticipates $1.5 million will be awarded to eligible Tribal applicants.

Important Dates

When What
Thursday, October 5, 2017 Tribal Request for Proposals (RFP) CLOSED
Spring 2018 Anticipated Notification of Selected Applicants
Spring/Summer 2018 Anticipated Funding of Awards

Supporting Information for RFP

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Frequently Asked Questions

Tribal Frequently Asked Questions (FAQ) (PDF) will be updated weekly during the application period. Please e-mail your questions to and type "Tribal RFP Question" in the subject line. All questions and answers, including those from all 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 RFP for specific information about this competition.

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Eligible Use of Funding

Eligible diesel vehicles, engines and equipment may include school buses, Class 5 – Class 8 heavy-duty highway vehicles, marine engines, locomotives and 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 that use:

Summary of What EPA Will Fund

  • Verified Exhaust Control Technologies
  • Verified Engine Upgrades and Certified Remanufacture Systems
  • Verified/Certified Cleaner Fuel Use
  • Verified Idle Reduction Technologies:
  • Verified Aerodynamic Technologies and Low Rolling Resistance Tires
  • Certified Engine Replacement
  • Certified Vehicle/Equipment Replacement
  • Certified Clean Alternative Fuel Conversion

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 RFP for specific information about this competition.

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Grant Process

The RFP includes information on how to prepare and submit a proposal package. The proposal 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
  • Applicant Fleet Description information (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 RFP for specific instructions on downloading an application package from

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Tools and Resources for Applicants

Reporting Templates for Grantees

Free Viewers

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