Approval and Promulgation of Air Quality Implementation Plans; Utah; Foreword and Definitions, Revision to Definition for Sole Source of Heat and Emissions Standards, Nonsubstantive Changes; General Requirements, Open Burning and Nonsubstantive Changes; and Foreword and Definitions, Addition of Definition for PMINF10/INF Nonattainment Area

On March 26, 1999, EPA published a direct final rule (64 FR 14620) approving, and an accompanying proposed rule (62 FR 26463) proposing to approve, revisions submitted by the Governor of the State of Utah on July 11, 1994, February 6, 1996 and July 9, 1998. These revisions contain requirements for residential solid fuel burning and open burning, and add a definition for ``PM<INF>10</INF> Nonattainment Area'' to the SIP. We are withdrawing this final rule due to adverse comment received from the Utah Petroleum Association on the portion of this action approving the ``PM<INF>10</INF> Nonattainment Area'' definition. In a subsequent final rule, we will summarize and respond to the comment received and take final rulemaking action on this requested Utah SIP revision.