The Environmental Protection Agency (EPA) approved Massachusetts' State Implementation Plan (SIP) submission, which meets most infrastructure requirements for the 2015 ozone National Ambient Air Quality Standards (NAAQS) under the Clean Air Act. However, EPA issued a finding of failure for certain parts related to the prevention of significant deterioration (PSD) program requirements. Despite this, the finding will not lead to sanctions or new federal requirements, as Massachusetts is already under a Federal Implementation Plan for PSD. The decision was based on Massachusetts demonstrating they have adequate resources and authority for SIP enforcement, even considering potential impacts from the COVID-19 pandemic.
Simple Explanation
The EPA said that Massachusetts can mostly follow the rules to keep the air clean, but they need a bit more work on a special plan to stop pollution from getting worse. Don't worry, though—this won't cause any big problems because there's already a backup plan in place.