EPA Determines Shinnecock Indian Nation Area Failed to Meet 2015 Ozone NAAQS, to be Reclassified as 'Serious' Nonattainment Area

Summary

The Environmental Protection Agency (EPA) has determined that the Shinnecock Indian Nation area in New York failed to meet the 2015 ozone National Ambient Air Quality Standards (NAAQS) by the applicable attainment date, leading to its reclassification as a 'Serious' nonattainment area on September 2, 2025.