Środowisko i energia · 08/12/2010

Approval and Promulgation of Air Quality Implementation Plans; Illinois

EPA is proposing to approve a July 29, 2010, request from the State of Illinois to exempt sources of Nitrogen Oxides (NO X ) in the Illinois portions of the Chicago-Gary-Lake County, Illinois- Indiana and St. Louis, Missouri-Illinois 8-hour ozone nonattainment areas from Clean Air Act (CAA) requirements for NO X Reasonably Available Control Technology (RACT) for purposes of attaining the 1997 8-hour ozone National Ambient Air Quality Standard (NAAQS). The State's NO X RACT waiver request is based on the most recent three years of complete, quality-assured ozone monitoring data, which demonstrate that additional reduction of NO X emissions in the ozone nonattainment areas would not contribute to attainment of the 1997 8-hour ozone NAAQS in the two ozone nonattainment areas. In addition to waiving the NO X RACT requirement for the State of Illinois, final approval of the NO X RACT waiver would also suspend a requirement for EPA to promulgate a NO X RACT Federal Implementation Plan (FIP) for the 8-hour ozone nonattainment areas.