User Manual for Fuels Programs 

Registration (OTAQREG) and the 

Central Data Exchange (CDX) 

Version 2.0
EPA-420-B-10-022

March 2010

Compliance and Innovative Strategies Division

Office of Transportation and Air Quality

U.S. Environmental Protection Agency

User Manual for Fuels Programs 

Registration (OTAQREG) and the 

Central Data Exchange (CDX) 

Version 2.0
U.S. EPA User Manual Fuels Programs Registration (OTAQREG) 

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Fuels Programs Registration (OTAQREG) 

and

 Central Data Exchange (CDX)

User Manual

EPA has developed a system to provide title 40 CFR part 80 fuels programs registrants with more control over their registration

information and to provide a dynamic User/Company/Facility list. All companies will now be required to submit new and updated 

registrations through CDX. The Fuels Programs Registration System (OTAQREG) has been updated to meet the needs of the RFS2 

program. Previous CDX OTAQREG users will notice significant changes to the Company and Facility registration screens. 

Registration is required for all the Title 40 CFR part 80 programs. Each company that is required to register must do so for all 

relevant programs and business activities required. Registration is required to report, begin compliance with all programs, and 

transact RINs under the RFS programs. 

The following user manual was developed to get users started with registration for the title 40 CFR Part 80 Fuels Programs and is not 

a substitute for the regulations. The user manual is broken in to two major sections. The first is for existing CDX users, including 

users of the CDX report submission application DCFUEL that have not set up OTAQREG in their account. The second section is for 

new users to both CDX and OTAQREG. The table of contents serves as a step by step guide navigate through each step for more 

information. 

For more information: The EPA Fuels Programs Registration web page address is http://epa.gov/otaq/regs/fuels/fuelsregistration.htm

Step by Step Instructions: 

Section 1: Instructions for new OTAQREG users with existing CDX accounts ____________________________ 2

1. Log into your CDX account at http://cdx.epa.gov _________________________________________________________2

2. Select Edit Current Account Profiles _________________________________________________________________4

3. Select Add New Program ___________________________________________________________________________4

4. Select Fuels Programs Registration (OTAQREG) and then Add ___________________________________________5

5. Go to MyCDX and select OTAQREG: Fuels Programs Registration ________________________________________6

6. Select New User and associate with a current company. ____________________________________________________7

Section 2: Instructions for new users of registered companies and for new users without registered companies _ 8

1. In your browser, open the page http://cdx.epa.gov _________________________________________________________8

2. Follow the prompts and read the information on each of the following pages to set up an account____________________8

3. Fill out required contact and company information for your CDX account registration ___________________________10

4. In the CDX Registration: Add Program select Office of Transportation and Air Quality Fuels Registration 

(OTAQREG): ___________________________________________________________________________________11

5. On the CDX Registration: Add Program ID page enter N/A for program type and select Finished ________________12

6. Your MyCDX page should appear. Select OTAQREG: Fuels Programs Registration __________________________14

7. OTAQ Registration Program Home page, selecting the <New User> link _____________________________________15

8. Your contact information will be brought over from your CDX account registration, review the data and complete the 

additional fields. __________________________________________________________________________________16

9. Select the <Company Info> tab______________________________________________________________________17

10. First search to see if your company is already a registered company, if not enter a new company ___________________17

11. If you have facilities which require registration pursuant to the programs under title 40 CFR part 80 fill out the forms under 

the Facility Info tab________________________________________________________________________________21

12. Once you have completed the User, Company and if applicable the Facility tab, select the Review and Submit button on 

the bottom of any of any of the tabs ___________________________________________________________________25

13. If your information is correct select the <Next> button ____________________________________________________26

14. Submission screen, print the registration forms and click the submit button ____________________________________27

15. Have the Responsible Corporate Officer (RCO) fill out any additional information if required and physically sign the forms 

to certify the hard copy forms. The forms must be mailed to the EPA:________________________________________30

Support Options_______________________________________________________________________________ 31
U.S. EPA User Manual Fuels Programs Registration (OTAQREG) 

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Section 1: Instructions for new OTAQREG users with existing CDX accounts

Steps 

1. Log into your CDX account at http://cdx.epa.gov 

Follow the prompts and read the information on each page 

Warning Notice screen 

CDX Home Page 1 

Read the warning notice and privacy statement then select on the <Click here to continue> link to continue to the next 

screen 

CDX Home Page 2 

Review the information on the screen and select on the <If you already have a CDX ID and password, click here> link. 

This link will take you to the CDX login screen. 
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CDX Login Screen 

Enter your User Name and Password, Select <Login>. The CDX application will navigate you to your “My CDX” 

home page. 

MyCDX Home Page 
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2. Select Edit Current Account Profiles 

MyCDX Home Page 

Select <Edit Current Account Profiles> 

3. Select Add New Program 

Add New Program Page 

Select Add New Program 
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4. Select Fuels Programs Registration (OTAQREG) and then Add 

Add Program Page 

Select the radio button to the right of Office of Transportation and Air Quality Fuels Registration (OTAQREG). If 

signing up to also use the Office of Transportation and Air Quality EPA Moderated Transaction System 

(OTAQEMTS), then select OTAQEMTS which will also give you access to OTAQREG after you complete these 

steps. Please note, EPA must first approve you in OTAQREG as a submitter in order to use OTAQEMTS. 

When complete select <ADD> 

General CDX Functions Page 

Select the blank ID field, you will be prompted to enter “N/A”. In the ID field enter “N/A”, select <ADD>. Note these 

fields relate to internal CDX functions, do not change the settings for the other fields on this page.
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5. Go to MyCDX and select OTAQREG: Fuels Programs Registration 

Edit Organizational Profiles Page 

The program OTAQREG will now appear on your Edit Organization Profiles page under Edit Organization Contact 

Information 

Select <Back> 

MyCDX Home Page 

Select < OTAQREG: Fuels Programs Registration>
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6. Select New User and associate with a current company. 

OTAQ Registration Program Home Page 

Select <New User> 

Proceed to Section 2.8 on page 16 of this document to complete your registration. Your contact information will be 

brought over from your CDX account registration and populate your user account information page. You will need to 

fill out the additional required fields on that page and subsequent pages. 

Please note, on the OTAQ Registration Program home page is this user manual and the a version of the fuels program 

registration list. The fuels program registration list: https://cdxnodengn.epa.gov/otaq-reg/list.do is updated daily and 

available to the public. While logged into OTAQREG users can see the current list as of the moment they open the 

link. 
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Section 2: Instructions for new users of registered companies and for new users without 

registered companies

Steps: 

1. In your browser, open the page http://cdx.epa.gov 

2. Follow the prompts and read the information on each of the following pages to set up an account 

CDX Home Page 1 

Read the warning notice and privacy statement then select the <Click here to continue> link to go to the next screen 

CDX Home Page 2 

After reading the information on this page, select the <If you are new to CDX and wish to register, please click here> 

link to navigate to the next screen. 
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CDX Home Page 3 

The initial CDX home page will reappear, reread the statements and select the <Click here to continue> link to 

continue to the terms and conditions screen. 

Terms and Conditions 

Upon reviewing these terms and conditions, one should select “I Accept” If you agree to the terms and conditions.” If 

you do not agree with the terms and conditions, select “I Decline,” you will not be able to set up an account and 

redirected to the initial CDX Home page. 
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3. Fill out required contact and company information for your CDX account registration 

CDX User Information Screen 

Fill out the CDX user information screen when complete select <Next> 

Enter Organization Information Page 

Fill out the CDX organization information screen when complete select <Next>. Agents, please note, this is your 

organization’s information not the information of your client’s. 
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4. In the CDX Registration: Add Program select Office of Transportation and Air Quality Fuels Registration 

(OTAQREG): 

Add Program Page 

Select the radio button to the right of Office of Transportation and Air Quality Fuels Registration (OTAQREG). If 

signing up to also use the Office of Transportation and Air Quality EPA Moderated Transaction System 

(OTAQEMTS), then select OTAQEMTS which will also give you access to OTAQREG after you complete these 

steps. Please note, EPA must first approve you in OTAQREG as a submitter in order to use OTAQEMTS. 

When complete select <Next> 
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5. On the CDX Registration: Add Program ID page enter N/A for program type and select Finished 

Note these fields relate to internal CDX functions. 

General CDX Functions Page 

Select the blank ID field, you will be prompted to enter “N/A”. In the ID field enter “N/A”. Note these fields 

relate to other CDX applications. 

 When complete select <Finished> 

 You should receive the following confirmation message. 
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CDX Completion Screen 

Select <Finished> and you will be taken to the MyCDX home page 
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6. Your MyCDX page should appear. Select OTAQREG: Fuels Programs Registration

The MyCDX page is your main CDX page. 

In the future after you login, your MyCDX screen will appear. 

Available Account Profiles: lists the CDX EPA Program modules that your account has been assigned. 

MyCDX Home Page 

In your MyCDX page, select the link for OTAQREG: Fuels Programs Registration, and you will be navigated to 

OTAQ Registration: OTAQ Registration Program Home page. 

If the link does not appear, select on <Edit Current Account Profiles>, then follow the instructions starting from 

Section 1.2 of this document (page 4) “CDX Registration: Add Program select Office of Transportation and Air 

Quality Fuels Registration (OTAQREG):“ 

Should OTAQREG: Fuels Programs Registration still not appear, please contact the CDX Helpdesk 

(1-888-890-1995) to receive assistance.
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7. OTAQ Registration Program Home page, selecting the <New User> link 

OTAQ Registration Program Home Page 

Review the information on this page. To proceed with registration, select the <New User> link 

Note: Your session will time out after 20 minutes. If you need more time and to prevent any data loss select the “Click 

here for more time” area at the bottom left of the page to restart the timer. 
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8. Your contact information will be brought over from your CDX account registration, review the data and complete 

the additional fields. 

Note, required fields not pre-entered on this page: 

“Position or Job Title” 

“Initial Roles” (selecting the <Help> button will provide additional information) 

 When complete select the <Company Info tab>. 

User Information Screen 

 Selecting the <Help> button will display Submission Help information, which includes initial role definitions 

Help Screen 
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Warning, do not select the Review and Submit button until you have completed all the forms and all the necessary 

information. Selecting the button too early will cause submission errors and may prevent you from submitting. 

9. Select the <Company Info> tab 

Company Information Screen 

Two new tabs will appear <Company Search> and <Enter New Company Info> 

10. First search to see if your company is already a registered company, if not enter a new company 

If your company is registered select the company name, which contains a hyperlink (this will automatically associate 

all of the company’s facilities as well). 

If not, select the Enter New Company Info Tab and fill out the form that will subsequently appear (see the area of this 

subsection called “For companies that have not previously registered please do the following” on page 20 of this 

subsection for instructions). 

Very Important: If your company is in the database and you try and register as a new entity, your 

registration will be denied! This search window searches on all the fields as one query, it is best to 

limit the fields you search on at first then narrow your search. 

Search: Results will appear below the <Search> and <Refresh> buttons. If your query is not in the data base you will 

receive the message: 

 “Nothing found to display”. 

Search by your City and State by entering the appropriate information into those two fields. Select the <Search> 

button. 

The following are examples: 
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Example 1 (Company Search Screens 1): the name “test” has been entered 

Company Search Screens 1 

When <search> is executed any matches with the company name test will appear 

Company Search Screens 2 
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Example 2 (Company Search Screens 3): below is a State, “District of Columbia” search 

Company Search Screens 3 

If you find that your company is registered, select the Company Name (See Company Search Screens 2). 

The selected already registered Company Name’s information will then be displayed. 

Company Information Screen after Association 

If the information is not that of your Company, select <Company Search>. Continue doing queries until your 

Company is displayed or you are certain that it has not been previously registered. In the later case, within the 

<Enter New Company Info> tab select <refresh> to clear out unrelated information [see page]. 

If the information is that of your Company’s, select <review & submit>. Skip to Section 2.12, on page 25 below. 

Please note, for security reasons individuals associating with a company for the first time are not allowed to make 
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edits to a company and will not be able to the company’s associated facilities. Only approved users may see this 

information. 

If you have a new company not previously registered proceed with the following information and if applicable 

complete section 2.11 on page 21. 

For companies that have not previously registered please do the following:

Select the <Enter New Company Info> tab within the <Company Info> tab. Should the fields contain any 

inaccurate information, one may select <refresh> at the bottom of the page to reset the <Enter New Company Info> 

tab. 

Enter New Company Info 

Fill out the form. If you have questions about specific options select the “Help” button or visit 

http://www.epa.gov/OMS/regs/fuels/fuelsregistration.htm . 

Only register for programs and business activities that are relevant to the title 40 CFR part 80 programs you 

are required to register for. Failure to register properly will delay registration and in most cases will require 
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you to start over. For example, if you are registering to become a RIN owner and not required to sign up as a truck 

loading terminal under the diesel program do not select the truck loading terminal option. 

Before registering be sure to read and understand the registration requirements for the part 80 subparts you are 

regulated under. See the Program Types below for references to each program’s registration regulations 

Program Types: 

Gasoline programs, Subpart D, for reporting under subparts D, E, F, G, H, J, and L, see §80.76 for registration 

requirements 

Diesel Program, Subpart I, see §80.597 for registration requirements 

Renewable Fuel Standard Program, Subparts K and M, see §80.1150 and §80.1450 for registration 

requirements 

If you are required to register a Facility(s) (All business activities other than, Exporter, Small Blender, RIN Owner, 

or Independent Lab) then continue to Section 2.11 on page 21, below. Otherwise go to Section 2.12 on page 25. 

(Select <Review & Submit>) 

11. If you have facilities which require registration pursuant to the programs under title 40 CFR part 80 fill out the 

forms under the Facility Info tab 

Note, a facility that will by involved in the production and/or importation of motor vehicle fuels under Title 40 

CFR Part 80, is required to be registered with the Fuels and Fuel Additives Registration Program (FFARS), Title 

40 CFR Part 79 [ http://www.epa.gov/otaq/regs/fuels/ffarsfrms.htm ] prior to completing this section. 

Use Facility Search tab to first search to see if your facility is already a registered facility under a different company. If 

your facility was previously registered, select it. If not, select the Enter New Facility Info Tab and fill out the form 

Facility Information Screen 

Select <Facility Search> tab 
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Facility Search Screen 1 

Example 1: Facility sample query follows: 

Facility Search Screen 2 

If a matching facility is located, check the box to the left of that facility’s Facility ID. If a matching facility has not 

been found enter the unregistered facility as follows. 

For facilities that have not been previously registered please do the following:

Select the <Associated Facilities> tab within the <Facility Info> tab and select the <Enter New Facility> button. 
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Please fill out the screens from top to bottom. Certain selections activate various subsections of the form. The below 

example is for a biodiesel facility. The screens for a gasoline refiner, ethanol producer, or mobile facility would all be 

different. 

Facility Input Screen 1 

Facility Input Screen 2 
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Facility Input Screen 3 

Facility Input Screen 4 

Fill out the form. If you have questions about specific options select the Help button or visit 

http://www.epa.gov/OMS/regs/fuels/fuelsregistration.htm . Should the fields contain any inaccurate information, 

one may select <refresh> at the bottom of the page to reset the <Enter New Company Info> tab. 

Once you have finished select <Review & Submit> to continue to Section 2.12 on page 25.
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12. Once you have completed the User, Company and if applicable the Facility tab, select the Review and Submit button on the 

bottom of any of any of the tabs 

Review and Submit button 

If any errors or concerns exist, they will appear in red text at the top of the screen and open to the tab where the 

issues exist. If there are issues with multiple tabs, the application resolves one tab at a time. Errors must be 

corrected. Once complete select <Review & Submit> to continue. 

Otherwise your User Info and additional information will be displayed in a frozen window pane view for your 

review. 
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Review and Submit Screen 

If after review you find that the information needs to be corrected, select <Back>. Make the corrections and repeat 

<Review & Submit> process detailed in this section. 

13. If your information is correct select the <Next> button 
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14. Submission screen, print the registration forms and click the submit button

Review the page, print and review the forms to ensure there are no additional steps you need to take or documents you 

need to produce and submit to EPA. If you are required to submit additional information and fail to your registration 

submission may be not approved or denied. 

Submission Screen 

Select <click here> to display the forms (PDF) that need to be printed, “wet ink” certified, and submitted. 

Additionally, any non-RCO CDX accounts need to be authorized by the company’s RCO in a cover letter, an 

“example letter” is provided in the PDF submission file. 

Example Submission PDF 1 
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Example Submission PDF 2 

Example Submission PDF 3 
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After printing the PDFs, on the OTAQ: Submission web page, select the radio button for “I have printed this 

form...” It is also advisable to save the PDF file to your computer or network. 

Submit Screen 

Select the <Submit> button 

Submission Success Screen 

Select the <Continue> button 
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15. Have the Responsible Corporate Officer (RCO) fill out any additional information if required and physically sign the 

forms to certify the hard copy forms. The forms must be mailed to the EPA: 

US Postal Service Mail (non-overnight): 

U.S. Environmental Protection Agency 

Fuels Programs Registration (6406J) 

1200 Pennsylvania Avenue, NW 

Washington, DC 20460 

Commercial Delivery: 

U.S. Environmental Protection Agency 

Fuels Programs Registration 

Room 647C; 202-343-9038 

1310 L Street, NW 

Washington, DC 20005 

When you return to the OTAQ Registration Program Home web page it will appear with the following message until the 

submitted information is verified through receipt of the “wet ink” certified hard copy forms: 

The system has detected that you have been registered but not yet approved. 

Please continue to collect and submit the required documentation, or contact the EPA Fuels Programs Information 

Line at 202-343-9755. 

Awaiting Approval Screen 

Once receipt of the correctly filled out forms is received, the account will be approved. At which time your screen will 

display your data in the following format –depending on what roles have been authorized for: 
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OTAQ Registration Program Home Page 

 Update User allows users to review and update their profiles. 

 New Company allows users to create new companies 

 Edit – [your company name will appear here] allows you to edit your company. If a user has multiple companies 

then the user will see an Edit for each company, if they have the company editor role for each company. 

 View – [your company name will appear here] allows you to view your company in read only mode. If a user has 

multiple companies then the user will see a View for each company, if they have the company viewer role for 

each company. 

 Nominate on behalf of [your company name will appear here]allows users to nominate a person for a CDX under 

their company [reminder a company may have a maximum of five CDX registrants at a time]. 

Support Options 

There are three support options available for general and technical questions related to the Fuels Programs 

Registration (OTAQREG) and Central Data Exchange (CDX): 

 Telephone - Person-to-person telephone support is available from the CDX Help Desk 8:00 a.m. - 6:00 

p.m. (EST). Call our toll-free line at 888.890.1995. 

 E-mail - Send an e-mail to Technical Support at help@epacdx.net with “OTAQREG Tech Support” listed 

in the subject line. 

 Regulatory Support - If you have questions about the content, formats, or policies for OTAQ Fuel 

Submissions information, contact EPA at 202.343.9755 or EPAFuelsPrograms@epa.gov. You may also 

find the answer to your question at the OTAQ FAQ Pages at http://fuelsprograms.custhelp.com.