In order to ensure independence, the independent lab must operate in a manner that is completely separate from the refiner. This means that, in fulfillment of the independent sampling and testing requirements, the independent lab may not use the refiner's testing equipment, may not operate its own testing equipment if set up on the refiner's premises, and may not store gasoline samples on the refiner's premises.(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)