Designation of Areas for Air Quality Planning Purposes; IL; Lake Calumet PM-10 Redesignation and Maintenance Plan

Streszczenie

EPA is proposing to approve the State of Illinois' request to redesignate to attainment the Lake Calumet (Southeast Chicago) area currently designated as nonattainment of the National Ambient Air Quality Standard (NAAQS) for particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM-10). We are also proposing to approve the Lake Calumet maintenance plan, submitted by the Illinois Environmental Protection Agency (IEPA) on August 2, 2005, and as supplemented on September 8, 2005, as a revision to the PM-10 State Implementation Plan (SIP) for this area. In the final rules section of this Federal Register, EPA is approving the SIP revision as a direct final rule without prior proposal, because EPA views this as a noncontroversial revision and anticipates no adverse comments. A detailed rationale for the approval is set forth in the direct final rule. If we do not receive any adverse comments in response to these direct final and proposed rules, we do not contemplate taking any further action in relation to this proposed rule. If EPA receives adverse comments, we will withdraw the direct final rule and will respond to all public comments in a subs