The Environmental Protection Agency (EPA) is approving the states of Maine and Rhode Island's declarations that they have no existing Municipal Solid Waste Landfills required to comply with certain federal emissions guidelines. These negative declarations allow the states to bypass creating specific state plans to control emissions from such landfills, as outlined in the Clean Air Act. The EPA considers this a straightforward decision and does not expect any objections, but if any adverse comments are received by March 15, 2021, the rule may be reconsidered. If no comments are received, the rule will become effective on April 12, 2021.
Simple Explanation
The EPA is saying that Maine and Rhode Island don't have any trash dumps that need to follow special rules about pollution right now, so they don't have to make a plan for this. If no one complains about this by March 15, 2021, everything will go ahead as planned on April 12, 2021.