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 www.epa.gov. 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 This website is no longer updated and links to external websites and some internal pages may not work.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

Assuming that EPA approves the use of analyzers to certify in-line blended RFG, if an analyzer has maintenance problems during a blend such that it did not give results for 50% of the blend, can the refinery use spot samples to track the property? Is ther

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

Proposals for using results from on-line analyzers for purposes of certifying a batch will be evaluated on a case-by-case basis. EPA has not established the amount of up-time required in order to qualify the on-line analyzer results for use in certification.

However, in considering a proposal to use on-line analyzer results for certification, EPA expects that the proposal will include a back-up system and plan as part of the QC/QA program for dealing with outliers and analyzer failures.(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)

US EPA

Fuels Registration, Reporting, and Compliance Help

Assuming that EPA approves the use of analyzers to certify in-line blended RFG, if an analyzer has maintenance problems during a blend such that it did not give results for 50% of the blend, can the refinery use spot samples to track the property? Is ther

Fuels and Fuel Additives Compliance