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The battle over distributing E15 fuel began in October 2010, when the EPA ruled that a fuel or fuel additive manufacturer could sell E15 after the manufacturer registered E15 and met the conditions of the partial wavers. In September 2011, members of the Engine Products Group (EPG), which includes the Alliance of Automobile Manufacturers, the Association of Global Automakers, the Outdoor Power Equipment Institute (OPEI) and the National Marine Manufacturers Association filed a formal legal challenge to EPA's E15 partial waiver decision, but the Court of Appeals dismissed the case for lack of jurisdiction in August 2012. The newest challenge to the EPA's E15 ruling, again filed by the EPG, is a petition for certiorari, which would allow the Supreme Court to review the lower court's judgment for legal error if granted. If the Supreme Court accepts the case, the parties will have standing to challenge EPA's partial waiver decisions that allow sale of E15 for some passenger cars and light trucks, but not older vehicles, motorcycles, boats and off road engines. EPG plans to ultimately ask the court for a reversal of the Court of Appeal's ruling. "This appeal to the U.S. Supreme Court reflects the seriousness of this issue for the outdoor power equipment and small engine industry," OPEI president Kris Kiser said in a statement. "We feel strongly that this challenge to the E15 partial waiver needs to be considered on its merits, and not held back on a procedural issue. We will push on to protect our consumers from the engine failure and product harm that comes from mis-fueling with E15." For more information about the E15 ruling, please check back. To learn more about E15, please visit epa.gov. Association news and events are listed at landscapearchitect.com. To view the calendar of upcoming events, visit www.landscapearchitect.com, go to the "Associations/Events" tab and click on "Search for Events." If your association has news and/or events that you would like featured on landscapearchitect.com, please send your information via email to associations@landscapearchitect.com.
Francisco Uviña, University of New Mexico
Hardscape Oasis in Litchfield Park
Ash Nochian, Ph.D. Landscape Architect
November 12th, 2025
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