Approval and Promulgation of Air Quality Implementation Plans; Utah; Listing of Exempt Volatile Organic Compounds, Approval of Minor Rule Changes for Emissions From Air Strippers and Soil Venting Projects, and Repeal of Perchloroethylene Dry Cleaning Plant Requirements
air-emissions · Rule · Published 1998-08-14 · Effective 1998-10-13 · UT · 63 FR 43624
EPA is approving State Implementation Plan (SIP) revisions as submitted by the Governor of Utah. The intended effect of this action is to approve the Governor's submittals of November 8, 1995, February 12, 1996, November 20, 1996, May 15, 1997, and June 10, 1998, that revised and updated Utah's definition of a volatile organic compound (VOC) in UACR R307-1-1. The November 8, 1995, February 12, 1996, November 20, 1996, and May 15, 1997, revisions were necessary to delete volatile methyl siloxanes, parachlorobenzotrifluoride (PCBTF), acetone, perchloroethylene (PERC), HFC 43-10mee, HCFC 225ca and HCFC 225cb as EPA had previously determined that these compounds have a negligible contribution to tropospheric ozone formation. The June 10, 1998 submittal incorporated the deletion of 16 more pollutants from the federal list that were determined to have a negligible contribution to tropospheric ozone formation; the compounds are: HFC-32, HFC-161, HFC- 236fa, HFC-245ca, HFC-245ea, HFC-245eb, HFC-245fa, HFC-236ea, HFC- 365mfc, HCFC-31, HCFC-123a, HCFC-151a, C<INF>4</INF>F<INF>9</INF>OCH<INF>3</INF>, (CF<INF>3</INF>)<INF>2</INF>CFCF<INF>2</INF>OCH<INF>3,</INF> C<INF>4</INF>F<INF>9</INF>OC<INF>2</INF>H<INF>5,</INF> and (CF<INF>3</INF>)<INF>2</INF>CFCF<INF>2</INF>OC<INF>2</INF>H<INF>5</INF> (compound names only are listed here, refer to 62 FR 44901, August 25, 1997, for the chemical name and 62 FR 44903, August 25, 1997, for the complete list of exempted VOCs). In addition, this action also approves the Governor's February 12, 1996 submittal that included minor revisions to UACR R307-6-1 regarding VOC emissions from air strippers and soil venting operations. EPA is also approving the Governor's November 20, 1996, request for the removal of UACR R307-14-8 which had addressed requirements for perchloroethylene dry cleaning plants located in ozone nonattainment and maintenance areas. This action is being taken under section 110 of the Clean Air Act.