EPA is approving emission limits for two sources in Lake County, Ohio and redesignating Lake and Jefferson Counties to attainment for SO<INF>2</INF>. EPA proposed this action on March 17, 1999 along with a direct final rule. On April 15, 1999, EPA received adverse comments from Weirton Steel Corporation (WSC), West Virginia, requesting that EPA not redesignate Jefferson County, Ohio to attainment for SO<INF>2</INF>. WSC commented that EPA's reliance on the modeling dating back to 1975 is misplaced and that more current modeling is needed in order to demonstrate compliance with the SO<INF>2</INF> NAAQS. WSC also commented that some sources located in Jefferson County, Ohio, are contributing significantly to the nonattainment problem in Hancock County, West Virginia, and are interfering with West Virginia's ability to maintain compliance with the SO<INF>2</INF> NAAQS. EPA has reviewed WSC's comments, disagrees with the comments, and concludes that Jefferson County should be redesignated to attainment. Also, because EPA's response to adverse comments for Jefferson County was to withdraw direct final action for Lake as well as Jefferson County, today's action reinstates approval of the Lake County emission limits and redesignation as well as the Jefferson County redesignation. If refined modeling evidence becomes available that indicates a need for tighter limits for Jefferson County, as WSC anticipates, then EPA will require Ohio to adopt the tighter limits as appropriate at that time.