Under §§ 80.584 and 80.585, each lab that will be testing fuel for compliance with the diesel regulations must obtain EPA approval on a laboratory-specific basis. The information required for approval is somewhat different depending on whether the test method is one that has been approved by a voluntary consensus-based standards body. However, there is no independent laboratory registration per se, as there is under the RFG program under § 80.65.

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)