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Fuels and Fuel Additives

New CDX User with an EPA Registered Company

NOTE: You will need Adobe Acrobat Reader, available as a free download, to view some of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.

If you do not have a CDX account and wish to associate with a CDX OTAQREG registered company, please complete the following steps:

  1. Download the user guide (PDF) (97 pp, 6.3MB, EPA-420-B-14-081, September 2014)
  2. Create a CDX account at https://cdx.epa.gov/RegistrationRequest?Dataflow=OTAQREG
  3. Follow the prompts and read the information on each page to set up user account. Once you have completed the initial set up:

    1. You will be prompted to access your email account. You will see a new message in your inbox from helpdesk@epacdx.net. When the email arrives click the specified link in the e-mail to verify your e-mail address.
    2. After verifying your e-mail address, complete an Electronic Signature Agreement (ESA). You may either sign the ESA electronically by verifying your identity through EPA’s integrated third party identity proofing service, or you may mail a signed paper ESA to EPA using the addresses at the bottom of this page. Please note, mailing your ESA will add additional mailing and processing time to your registration.
  4. After signing or printing the ESA you will be presented with your MyCDX home screen. Click the “Fuels Programs Registration” link on your MyCDX home screen to access CDX OTAQREG.

    1. To view a list of registered companies, please visit the continuously updated Programs, Company and Facility ID Master List (XLS) (2.4M, Updated daily MS Excel reader Exit EPA Disclaimer)
  5. Follow the prompt to add a “Position or Job Title” to your User Profile.
  6. Select “Associate to Company” in the left side bar of the “OTAQ Registration Home” screen.
  7. Search for your company using the Search Criteria fields within the “Associate to Company” screen. Be broad in your search and note partial words are okay search terms. Start by using only one field to search. The more fields you use in your search, the fewer results you will receive.
  8. Click the checkbox next to your company’s name and click the “Add Selected” button.
  9. Click the “Select Roles” button and select which roles you will have with the company. This step is very important. If you fail to select roles for a company, you will be unable to interact with OTAQREG, and if applicable, the EPA Moderated Transaction System (EMTS) and the OTAQ:DCFUEL Fuels Programs Reporting System on behalf of the company.

    1. OTAQ Registration (Pick One)
      1. Company Editor: This role has full viewing and editing rights to associated company and facility information.
      2. Company Viewer: This role has full read-only access to associated company and facility information.
      3. Limited Company Viewer: This role has limited read-only access to associated company and facility information. Users with this role will not be able to see RCO information. These users will also be limited to only basic facility information on the Facility Details page.
    2. OTAQ Program Roles (Select all that Apply)
      1. Cellulosic Biofuel Waiver Credits (Pay.gov) Submitter: Users should select this role if they are registering for the Cellulosic Biofuel Waiver Credits Pay.gov application to purchase cellulosic biofuel waiver credits on behalf of the company (This role should only be selected if the company registered as a gasoline or diesel refiner, or a non-renewable fuels importer).
      2. DCFuels Submitter, Third Party Engineering Review: This role can only be selected with the Independent Third Party Engineer role detailed below.
      3. DC Fuels Submitter, Title 40 CFR Part 79 Subparts A,B,C,D, and F: Users should select this role if they are registering to submit compliance reports for the fuels and fuel additives registration program.
      4. DC Fuels Submitter, Title 40 CFR Part 80 Subparts D, E, F, H, J, and L: Users should select this role if they are registering to submit compliance reports for the following programs: Reformulated Gasoline / Anti-Dumping / Gasoline Toxics / Gasoline Sulfur / Gasoline Benzene.
      5. DC Fuels Submitter, Title 40 CFR Part 80 Subpart I: Users should select this role if they are registering to submit compliance reports for the following program: Motor Vehicle, Nonroad, Locomotive, and Marine Diesel Fuel.
      6. DC Fuels Submitter, Title 40 CFR Part 80 Subparts K and M: Users should select this role if they are registering to submit compliance reports for the following program: Renewable Fuel Standard.
      7. EMTS Viewer: User should select this role if they are requesting view-only access to the EMTS data flow.
      8. EMTS Submitter: Users should select this role if they are requesting both editing and submitting rights to EMTS.
    3. Other:
      1. Agent: Users should select this role if they are an agent for a company (the definition of an agent is a person who is not a direct employee of the company).
      2. Independent Third Party Engineer: Users should select this role if they are an independent third party engineer registering to submit an engineering review update electronically. Be advised, selecting this role will override other role selections.
  10. Once you select all appropriate roles click the “Review” button.
  11. On the next “Associate to Company” screen, review your selected roles. Click the “Back” button if you need to change any information. Otherwise, click the “Continue” button.
  12. The system will present you with a pop-up screen reminding you to submit paperwork for your New Company Request; click “OK.”
  13. Click the “Print, Sign and Mail” or, if presented, the “Sign Electronically” button to submit your request.
  14. Click the link to save copies of your registration forms, and click the “Home” button to return to your OTAQ Registration Home screen.
  15. You should see your Company Association Request listed under the “Pending Requests” header. If the status of the request is listed as:

    1. Awaiting RCO Electronic Signature: Please have the RCO log-in to their CDX OTAQREG account to approve the request electronically.
    2. Awaiting RCO Wet Ink Signature: Please print all pages of the Company Association Request, have the RCO sign the document, and mail all pages to the EPA address below.

Please follow the instructions above and mail all pages, including signatures, to EPA. Do not share accounts. CDX accounts are assigned to individuals rather than to a company; submitting information to the EPA using another person's name is a crime.

If your company hires a third party to create reports there is an option for them to submit for you via CDX. Please visit our CDX page for more information.

Submitting a registration through CDX does not constitute a complete registration. After submission, the forms must be printed and signed by a Responsible Corporate Officer. As of July 28, 2014, all materials should be sent to:

US Mail: Commercial Delivery:
U.S. Environmental Protection Agency
Mail Code 6405A
1200 Pennsylvania Ave NW
Washington, DC 20460
U.S. Environmental Protection Agency
William Jefferson Clinton Building - North
Mail Code 6405A, Room 6520V; (202) 343-9038
1200 Pennsylvania Ave NW
Washington, DC 20004


Be aware that forms sent via US Mail undergo an irradiation process that can potentially delay delivery.

For assistance, contact support@epamts-support.com

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If you have questions or request information, please contact the appropriate support or help line found on the Support & Help page.

Please visit EPA's Transportation and Air Quality web-based repository of mobile source documents, Document Index System (DIS). This searchable repository contains regulations, Federal Register notices, policy letters, and guidance documents.

Please visit our Related Links page for other fuel related information within EPA, other U.S. Agencies, and other fuel related websites.

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