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

Streszczenie

EPA proposes to approve a request from the State of Indiana to redesignate Lake and Porter Counties to attainment of the 1997 eight- hour ozone National Ambient Air Quality Standard (NAAQS). In proposing to approve this request, EPA also proposes to approve, as a revision of the Indiana State Implementation Plan (SIP), the State's plan for maintaining the eight-hour ozone standard through 2020 in Lake and Porter Counties and in the Chicago-Gary-Lake County, Illinois-Indiana (IL-IN) ozone nonattainment area. In addition, EPA proposes to approve Volatile Organic Compound (VOC) and Nitrogen Oxides (NO X ) emission inventories for Lake and Porter Counties as a revision of the Indiana SIP. Finally, EPA proposes to find adequate and to approve the State's 2010 and 2020 Motor Vehicle Emission Budgets (MVEBs) for Lake and Porter Counties.