Approval and Promulgation of State Implementation Plan; Wisconsin; GenCorp Inc. Site-Specific SIP Revision

The Environmental Protection Agency (EPA) approves a revision to the Wisconsin State Implementation Plan (SIP) for ozone that was submitted on November 17, 1995. This revision is an alternative control method for controlling volatile organic compound (VOC) emissions from storage tanks at the GenCorp Inc.-Green Bay facility. The EPA has approved Wisconsin's general rule for the storage of VOCs. The approved rule states that any deviation from the specifically required control methods found in the State's rule must be proven to be equivalent in controlling the VOC emissions before being approved into the SIP. Because GenCorp Inc. has chosen a different control method than those listed specifically in Wisconsin's rule, a site-specific SIP revision is required to evaluate the control method being used at the Green Bay facility. In the proposed rules section of this Federal Register, the EPA is proposing approval of, and soliciting comments on, this requested SIP revision. If adverse comments are received on this action, the EPA will withdraw this final rule and address the comments received in response to this action in a final rule on the related proposed rule, which is being published in the proposed rules section of this Federal Register. A second public comment period will not be held. Parties interested in commenting on this action should do so at this time. This approval makes federally enforceable the State's rule that has been incorporated by reference.