Approval and Promulgation of Air Quality Implementation Plans; Wisconsin; VOC Definition Update and Removal of Obsolete Gasoline Vapor Recovery Regulations

The Environmental Protection Agency (EPA) is approving a request submitted by the Wisconsin Department of Natural Resources (WDNR) on May 16, 2017, to revise the Wisconsin State Implementation Plan (SIP). The submission includes amendments to the Wisconsin Administrative Code updating the definition of ``volatile organic compound (VOC)'' to add eight compounds to the list of exempt compounds. In addition, WDNR is also requesting the withdrawal of several previously approved provisions of the Wisconsin Administrative Code from the SIP concerning the State's Stage II vapor recovery (Stage II) program that terminated in 2012. EPA approved the removal of the Stage II program as a component of the Wisconsin SIP in 2013, including the approval of a demonstration under section 110(l) of the Clean Air Act (CAA) that addressed emissions impacts associated with the removal of the program. EPA proposed to approve the State's submittal on May 25, 2018.