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Are UST systems containing diesel exhaust fluid (DEF) regulated under 40 CFR Part 280?

April 26, 2017CFR containing def diesel exhaust fluid regulated SYSTEMS UST

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Are UST systems containing diesel exhaust fluid (DEF) regulated under 40 CFR Part 280?

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No. UST systems storing DEF contain less than a de minimis concentration of regulated substances and are not regulated under 40 CFR Part 280.