Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; State of Illinois

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The United States Environmental Protection Agency (USEPA) proposes to approve a State Implementation Plan (SIP) request to redesignate the Jersey County, Illinois ozone nonattainment area to attainment. The USEPA is also approving the accompanying maintenance plan as an SIP revision. The redesignation request and maintenance plan were submitted by the Illinois Environmental Protection Agency (IEPA) on November 12, 1993. The State has met the requirements for redesignation contained in the Clean Air Act (Act), as amended in 1990. The redesignation request is based on ambient monitoring data that show no violations for the ozone National Ambient Air Quality Standard (NAAQS) during the three-year period from 1990 through 1992.