EPA is ramping up efforts to sharply reduce ozone emissions across much of the country, with a series of planned or just-finalized rules, although whether this is sufficient to meet existing federal air quality limits, much less potentially tougher federal standards now under consideration, is open to question. Possibly as soon as March 2023, EPA plans to finalize its revised version of the Cross-State Air Pollution Rule (CSAPR), which as proposed will expand the emissions trading program to cover new...