Approval and Promulgation of Implementation Plan; Michigan, East Lansing and Genesee County NOINFX Exemptions

The EPA is granting exemptions to the East Lansing and Genesee County ozone nonattainment areas, both of which are classified as transitional, from applicable oxides of nitrogen (NO<INF>X) requirements found in the Clean Air Act (Act). For transitional areas the NO<INF>X requirements which apply are conformity, both general and transportation, and nonattainment new source review. Approval of these exemption requests would relieve these areas from adopting and implementing all of the aforementioned NO<INF>X requirements. The State of Michigan submitted NO<INF>X exemption requests for the East Lansing and Genesee County areas on July 1, 1994 and July 8, 1994, respectively. These requests are based on the fact that ozone monitoring in these areas indicate that the average number of exceedances of the National Ambient Air Quality Standard for ozone during the most recent 3-year period, 1991 to 1993, is fewer than one per year. Given this monitoring data, Michigan petitioned for exemptions from the NO<INF>X requirements based on a demonstration that additional reductions of NO<INF>X would not contribute to attainment of the ozone standard in these areas.