Regulation & law · 19/10/2011

EPA Approves Ohio and Indiana Air Quality Plans, Redesignates Cincinnati-Hamilton Area

The US Environmental Protection Agency (EPA) has approved Ohio's and Indiana's requests to redesignate their portions of the Cincinnati-Hamilton nonattainment area to attainment for the 1997 annual National Ambient Air Quality Standard for fine particulate matter, as required by the Clean Air Act. The approvals also include revisions to the states' plans for maintaining the standard through 2021.