Approval and Promulgation of Air Quality Implementation Plans; Illinois; Midwest Generation Variances

The Environmental Protection Agency (EPA) is proposing to approve into the Illinois regional haze State Implementation Plan (SIP) variances affecting the following Midwest Generation, LLC facilities: Crawford Generating Station (Cook County), Joliet Generating Station (Will County), Powerton Generating Station (Tazewell County), Waukegan Generating Station (Lake County), and Will County Generating Station (Will County). The Illinois Environmental Protection Agency (IEPA) submitted these variances to EPA for approval on May 16, 2013, and August 18, 2014.