EPA provides this information about emerging fuels and the responsibility of UST owners and operators to help prevent leaks or releases of regulated substances possibly caused by emerging fuels. Emerging fuels may not always be compatible with all UST systems, and storing emerging fuels can sometimes increase corrosion in UST systems.
EPA uses the term emerging fuels to broadly describe new or different fuel formulations that enter the market for various reasons, such as policy changes, retail opportunities, or technical requirements. Emerging fuels include biofuels, like ethanol, biodiesel, and butanol; new formulations of petroleum-based fuels, like ultra-low sulfur gasoline and ultra-low sulfur diesel; renewable diesel; combinations of multiple types of fuels, and others.
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