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Guidance - Compatibility Of UST Systems With Biofuel Blends

EPA developed guidance which provides options for underground storage tank (UST) owners to use in complying with the federal compatibility requirement for UST systems storing gasoline containing greater than 10 percent ethanol or diesel containing greater than 20 percent biodiesel.  

  • June 2011 guidance (PDF) (3 pp, 131K, About PDF)
  • July 5, 2011 Federal Register notice includes general information, background, response to public comments, and the guidance. 
  • August 3, 2011 Federal Register corrects a minor typographical error. 
  • For more information, contact Ryan Haerer at haerer.ryan@epa.gov or 703-347-0151. 

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