EPA proposes tightening primary ozone standards to range of 65-70 ppb; final rule by October 2015
Green Car Congress
NOVEMBER 26, 2014
EPA last updated these standards in 2008, setting them at 75 ppb. billion in 2025 at a standard of 70 ppb, and $15 billion at a standard at 65 ppb nationwide, excluding California. A number of California counties likely would have attainment dates ranging from 2032 to late 2037. Costs are estimated at $3.9
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