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Ozone and ethanol. Oil and Gas Journal, 17/9/2007, 105 ( 35) .

The Environmental Protection Agency proposes to lower the 8-hr primary ozone standard to 70-75 ppb from the current level, set in 1997, of 80 ppb. The primary standard is designed to protect human health. The agency further proposes to tighten its secondary standard, which is designed to protect “welfare,” such as vegetation and crops

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