The designation is left to the terminal. The designation must be clear and accurate, therefore the sulfur level of the mixture will limit the designation options. Beyond that, the designate and track compliance calculations have been designed to minimize, if not eliminate, any unintended marketing limitations.

Question and Answer was originally posted at Questions and Answers on the Clean Diesel Fuel Rules (PDF)(135 pp, 888 K, EPA420-B-06-010, July 2006, About PDF)