On June 15, 2001, EPA published a direct final rule (66 FR 32545) partially approving and partially disapproving, and a parallel proposed rule (66 FR 32594) proposing to partially approve and partially disapprove, State Implementation Plan (SIP) revisions submitted by the Governor of Montana on September 19, 1997; December 10, 1997; April 14, 1999; December 6, 1999; and March 3, 2000. These submitted revisions are intended to recodify and modify the State's air quality rules so that they are consistent with Federal requirements, minimize repetition in the air quality rules, and clarify existing provisions. They also contain Yellowstone County's Local Regulation No.002--Open Burning. Also, in our June 15, 2001 publication, EPA announced that on May 16, 2001, we delegated the authority for the implementation and enforcement of the New Source Performance Standards (NSPS) to the State. EPA also updated the NSPS and National Emissions Standards for Hazardous Air Pollutants (NESHAP) "Status of Delegation Tables" and the names and addresses of the Regional Office and State Offices in the Region. EPA also updated regulations to indicate that Montana provided a negative declaration. The direct final and proposed rule preambles explained that the direct final rule was to become effective on August 14, 2001. However, if EPA received an adverse comment by July 16, 2001, EPA would publish a timely withdrawal of the direct final rule and it would not take effect. Only the June 15, 2001, parallel proposed rule preamble also stated that EPA would address all public comments in a subsequent final rule based on the proposed rule and that EPA would not institute a second comment period. Even though EPA did not receive adverse comments on the June 15, 2001, actions, EPA is withdrawing the June 15, 2001, direct final rule because the direct final and parallel proposed rules contain a number of errors that we have independently identified and want to correct before the direct final rule