Due to adverse comments, EPA is withdrawing the direct final rule to approve clarifications to the exception provisions of the Maryland visible emissions regulations. In the direct final rule published on April 26, 2005 (70 FR 21337), we stated that if we received adverse comment by May 26, 2005, the rule would be withdrawn and not take effect. EPA subsequently received two adverse comments. EPA will address the comments received in a subsequent final action based upon the proposed action also published on April 26, 2005 (70 FR 21387). EPA will not institute a second comment period on this action.