Coalition Comments on Proposed Approval of Maryland’s Air Quality Implementation Plan

  U.S. Environmental Protection Agency Region 3 Four Penn Center 1600 John F. Kennedy Blvd. Philadelphia, PA 19103-2029 Re: Comments on Proposed Approval and Promulgation of Air Quality Implementation Plans; Maryland; Regional Haze State Implementation Plan for the Second Implementation Period [EPA Docket ID No. EPA–R03–OAR–2022–0912] The Coalition to Protect America’s National Parks, National Parks