On March 15, 2021, the EPA Administrator signed the final revisions to 40 CFR Part 97, Subpart GGGGG, CSAPR NOx Ozone Season Group 3 Trading Program. Subpart GGGGG requires additional NOx reductions from power plants located in twelve (12) states beginning with the 2021 ozone season. The twelve (12) affected States are Illinois, Indiana, Kentucky, Louisiana, Maryland, Michigan, New Jersey, New York, Ohio, Pennsylvania, Virginia and West Virginia. The new Group 3 Trading Program would be in addition to the existing Groups 1 and 2 NOx Ozone Trading Programs. The final rule does not include ozone season NOx emission limits for non-EGUs. The rule will become effective sixty (60) days after the Federal Register publication date. VIM will post a copy of the Federal Register publication when it becomes available. A copy of the prepublication version of the rule can be found here.