Yes. The regulations do not specify where or by whom the testing may be performed. The refiner or importer is ultimately responsible for sampling and testing each batch of conventional gasoline and reporting the results to EPA. Composite sampling is appropriate under the conditions specified at § 80.101(i)(2).(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)