Regulacje i polityka gospodarcza · 13/11/2000

Approval and Promulgation of State Implementation Plans; Michigan

The Environmental Protection Agency (EPA) is proposing to adjust the applicability date for reinstating the 1-hour ozone National Ambient Air Quality Standard (NAAQS) in Genesee, Bay, Midland, and Saginaw Counties, Michigan and is proposing on a determination that these areas have attained the 1-hour ozone NAAQS. This determination is based on 3 consecutive years of complete, quality-assured, ambient air monitoring data for the 1997-1999 ozone seasons that demonstrate that the areas have attained the ozone NAAQS. On the basis of this determination, EPA is also proposing that certain attainment demonstration requirements, and certain related requirements of part D of subchapter I of the Clean Air Act (CAA), do not apply to Genesee, Bay, Midland, and Saginaw Counties. EPA is also proposing to approve the State of Michigan's request to redesignate Genesee, Bay, Midland, and Saginaw Counties to attainment for the 1-hour ozone NAAQS. Michigan submitted the redesignation request for these areas on May 9, 2000. EPA is also proposing to approve the State's plan for maintaining the 1-hour ozone standard for the next 10 years as a revision to the Michigan State Implementation Plan (SIP). In