Środowisko i energia · 14.12.1994

Approval and Promulgation of State Implementation Plans: Utah; Stack Height Analyses and Regulations and SOINF2 Nonattainment Plan

In this action, EPA is approving two revisions to the Utah State Implementation Plan (SIP): Section 16, Stack Height Demonstration, and Section 9, Part B, Sulfur Dioxide. Sections 16 and 9 were submitted by the Governor of Utah in letters dated December 23, 1991, and May 15, 1992, respectively. The revisions to Section 16 were to address the stack-height demonstration requirements for the Kennecott Minerals Company Smelter near Magna, Utah. Minor corrections to the other stacks in the State were also made. Section 9, Part B was revised to be consistent with Section 16. Prior to the revision, the SO 2 attainment demonstration for Salt Lake County and portions of Tooele County was based on multipoint rollback emission rates at the Kennecott smelter. The PM 10 SIP adopted for Salt Lake County in 1991 established significantly lower emission rates (which would meet the 24-hour National Ambient Air Quality Standard (NAAQS) for the smelter based on reasonable available control technology (RACT).) Section 16 and Section 9, Part B needed to be consistent with the PM 10 SIP (the PM 10 SIP is located in Section 9, Part A). In addition, Section 9 Part B was revised to include an analysis and