In early January 2023 the U.S. Environmental Protection Agency (EPA) issued a proposed decision to reconsider the standards on fine particulate matter, commonly referred to as _PM2.5, under the Federal Clean Air Act’s (CAA) National Ambient Air Quality Standards (NAAQS).¹

On December 23, 2019, Massachusetts Department of Environmental Protection (MassDEP) announced it has finalized the credits for nitrogen oxides (NOx) and volatile organic compounds (VOC) emissions offsets based on the emissions reductions that resulted from the permanent shut-down of the former Brayton Point Station power plant in Somerset, MA.