EPA Approves Cincinnati-Hamilton Nonattainment Area for Attainment of 1997 Annual Fine Particulate Standards

Summary

The US Environmental Protection Agency (EPA) has determined that the Cincinnati-Hamilton nonattainment area in Ohio, Kentucky, and Indiana has met the 1997 annual fine particulate (PM 2.5) national ambient air quality standards, with the area having attained the standard by its applicable attainment date of April 5, 2010.