Approval and Promulgation of Air Quality Plans; Wisconsin; Ozone

The EPA is approving the revisions submitted by the Wisconsin Department of Natural Resources (WDNR or state) to its State Implementation Plan (SIP) for the Milwaukee-Racine area for attainment of the one-hour ozone standard and is approving the SIP as fully meeting the attainment demonstration requirement of the Clean Air Act (Act). The revision was submitted to EPA on December 27, 2000. EPA is approving the air quality modeling, rules to reduce emissions of ozone forming pollutants (i.e., nitrogen oxides (NO<INF>X</INF>) and volatile organic compounds (VOC)), a plan demonstrating how progress in emission reductions will be achieved through the area's attainment date of 2007 (i.e., Rate of Progress Plan (ROP)), a reasonably available control measure (RACM) analysis, NO<INF>X</INF> waiver revisions, transportation conformity budgets, and commitments to complete a mid- course review and to recalculate the attainment year budget using MOBILE6. On July 2, 2001, we proposed approval of these SIP revision elements and the SIP as a whole as meeting the attainment demonstration requirement of the Act.