We are withdrawing the immediate final rule for Wyoming: Final Authorization of State Hazardous Waste Management Program Revision published on February 25, 1999, which approved the first revision to Wyoming's Hazardous Waste Rules. We stated in the immediate final rule that if we received adverse comment, we would publish a timely notice of withdrawal in the Federal Register. Subsequently, we received adverse comment. We will address the adverse comment in a subsequent final action based on the proposed rule also published on February 25, 1999, and the extension of the public comment period published in a separate document in the ``Proposed Rules'' section of this Federal Register.