EPA proposes tightening primary ozone standards to range of 65-70 ppb; final rule by October 2015
Green Car Congress
NOVEMBER 26, 2014
Secondary standards set limits to protect public welfare, including protection against visibility impairment, damage to animals, crops, vegetation, and buildings. EPA has analyzed costs and benefits for California separately, because a number of California counties would have longer to meet the proposed standard, based on their ozone levels.
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