Approval and Promulgation of Implementation Plans; Wisconsin; General and Registration Permit Programs

EPA is taking final action to approve revisions to the Wisconsin State Implementation Plan (SIP) submitted by the State of Wisconsin on July 28, 2005. These revisions include General and Registration permit programs that provide for the issuance of general and registration permits as part of the State's construction permit and operation permit programs. In addition, these permit programs may include the regulation of hazardous air pollutants (HAPs) which may be regulated under section 112 of the Clean Air Act (the Act). Thus, EPA is also approving Wisconsin's general and registration permit program under section 112(l) of the Act. These SIP revisions also contain changes to definitions related to Wisconsin's air permit program, as well as a minor technical change to provide correct references to the updated chapter NR 445, which was inadvertently omitted in the processing of that rule package. Additionally, these revisions clarify an existing construction permit exemption and operation permit exemption for certain grain storage and drying operations. This clarification is necessary to ensure that column dryers and rack dryers are included in the exemption criteria.