Although min/max standards do not apply to sulfur, olefins and T90, these parameters are regulated for both conventional and RFG. What tolerances will be available for these parameters?

See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help.

Under the simple model only oxygen and benzene, and RVP in the case of VOC-controlled RFG, will involve downstream EPA testing for enforcement purposes. EPA has not set enforcement tolerances for standards that apply at the refinery or importer level, such as sulfur, T-90, and olefins. Moreover, enforcement tolerances are only appropriate when measuring for per-gallon or min/max standards. Sulfur, olefins and T-90 are averaging standards. Therefore, EPA does not anticipate issuing enforcement tolerances for sulfur, T-90, or olefins.(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)