EPA Proposes Determination of Attainment of Fine Particle Standard in Louisville Nonattainment Area

Summary

The Environmental Protection Agency (EPA) is proposing to determine that the Louisville nonattainment area, which spans across Indiana and Kentucky, has met the 1997 annual average fine particle standard of 75 parts per million (PM 2.5). This determination is based on quality-assured air monitoring data from 2007-2009, and if finalized, it would suspend certain requirements for the area to submit plans and revisions related to attaining the standard.