EPA Air Data Suggest 21 States Face Duty To Reduce Transport Of Ozone

EPA has released new air quality modeling data that suggest at least 21 states could face a Clean Air Act duty to curb transported emissions of ozone under the agency's latest strict ambient air limit for the criteria pollutant, including many of the states subject to the Cross-State Air Pollution Rule (CSAPR) emissions trading program. In a notice of data availability (NODA) published in the Jan. 6 Federal Register , EPA provides its preliminary estimates of which upwind states will...