Do I have to register to use CDX and is this a separate registration process?
You will have to register with CDX. (Registering with CDX is not the same as registering under regulation Section 80.1150.) Instructions are available via our Reporting for Fuel Programs web site.
Question and Answer was originally posted at: Questions and Answers on the Renewable Fuel Standard Program (pdf) (55 pp, 221 KB, EPA420-F-07-041a, August 2007)