Obama Administration withdraws proposed rulemaking on strengthened ozone standards
Green Car Congress
SEPTEMBER 2, 2011
The proposed revisions were based on scientific evidence about ozone and its effects on people and the environment, and resulted from a reconsideration of the primary and secondary ozone standards set at 0.075 ppm in 2008. For a tougher standard of 0.060 ppm, the costs would range from $52 billion to $90 billion. Earlier post.)
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