Air Plan Approval; New York; New York Metropolitan Area Second 10-year Limited Maintenance Plan for the 2006 24-Hour PM2.5 Standard

The Environmental Protection Agency (EPA) is proposing to approve, under the Clean Air Act (CAA), the limited maintenance plan (LMP) for the 2006 PM2.5 national ambient air quality standard (NAAQS) for ten counties which comprise the New York portion of the New York-N. New Jersey-Long Island (NY-NJ-CT) 2006 PM2.5 NAAQS maintenance area. This LMP was submitted on October 15, 2024 by the New York State Department of Environmental Conservation (NYSDEC). The plan addresses the second 10-year maintenance period for particulate matter with an aerodynamic diameter less than or equal to a nominal 2.5 micrometers, known as PM2.5. EPA is proposing approval of New York's LMP submission because it provides for the maintenance of the 2006 24-hour PM2.5 NAAQS through the end of the second 10-year portion of the maintenance period. In addition, EPA is initiating the process to find the New York PM2.5 LMP adequate for transportation conformity purposes.