An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Fuels Registration, Reporting, and Compliance Help

For the purposes of the RFG sampling and testing requirements under § 80.65(e) and (f), may a refiner use the option under which the independent lab samples and tests 100% of the batches for some parameters, and use the option under which the refiner tes

Refiners and importers may not use the 100% independent lab analysis option for certain parameters and the 10% independent lab analysis option for other parameters, but must use the same option for all RFG parameters.

However, a refiner or importer using the 10% independent analysis option may use another lab, including the refiner's or importer's designated independent lab, to perform analyses that are the responsibility of the refiner or importer provided the substitute lab properly performs the testing. In any case where a refiner or importer uses a substitute lab, the refiner or importer remains responsible for the proper conduct of the analyses, and for meeting all requirements for reporting test results to EPA.(7/1/94)

This question and answer was posted at Consolidated List of Reformulated Gasoline and Anti-Dumping Questions and Answers: July 1, 1994 through November 10, 1997 (PDF)(333 pp, 18.17 MB, EPA420-R-03-009, July 2003, About PDF)