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

On November 25, 1994, USEPA proposed to approve a State Implementation Plan (SIP) request to redesignate the Jersey County, Illinois marginal ozone nonattainment area to attainment of the public health based ozone air quality standard. The USEPA also proposed approval of the accompanying maintenance plan as a SIP revision. The redesignation request and maintenance plan were submitted by the Illinois Environmental Protection Agency (IEPA) on November 12, 1993. [[Page 13635]] The State has met the requirements for redesignation contained in the Clean Air Act (Act). The redesignation request is based on ambient monitoring data that show no violations for the ozone National Ambient Air Quality Standard during the three-year period from 1990 through 1992. Public comments were solicited on the redesignation request, maintenance plan and on USEPA's proposed action. No public comments were received.