Compliance Help Tools for Fuels Program

On this page:

• Searchable Help Index
• Frequent Questions
• Fuels Program Support Helpdesk
• CDX Support Helpdesk
• Mailing Addresses

Searchable Help Index

Use this search box to find any page within the "Fuels Registration, Reporting, and Compliance Help" site, including tutorials, documents, diagrams, and other resource materials. For best results, start with a broader search term and then use more specific terms if needed.

What are you looking for?

Frequent Questions

Browse or search the Knowledge Base for answers to frequently asked questions.

• Frequent questions for Fuels Program

Fuels Program Support Helpdesk

Email: FuelsProgramSupport@epa.gov

Phone number: 1-800-385-6164

All phone calls are directed to a voicemail system that offers a recorded set of menu options to better route questions. Parties will be able to choose from the following three options: 

1. Registration Questions
   • Registering under 40 CFR Part 80 and 40 CFR Part 1090 fuel programs (including RFS, gasoline/Tier 3, diesel/ULSD fuel)
     • Company association requests
     • Responsible corporate officer requests
     • New company requests
     • Company update requests
   • Registering under 40 CFR Part 79 fuel and fuel additive registration program
2. Program Regulations Questions
   • Fuel regulations for EPA’s fuels programs
   • Public data (including RINs, ABT sulfur and benzene credits)
3. Technical Support or Reporting Questions
   • EMTS technical support
   • Remedial actions

CDX Support Helpdesk

For help with CDX-related topics, including password resets and node assistance, please visit the following links:

• Password reset
• Forgot user ID
• CDX Virtual Assistant  (click on upper right tab)

If you need to contact the CDX Helpdesk directly, please call 1-888-890-1995 or email helpdesk@epacdx.net.

NOTE that CDX now offers self-service password resets via security questions and/or mobile device authentication.

Mailing Addresses

Fuels Program Mailing Addresses