Approval and Promulgation of Implementation Plans and Approval Under Section 112(l); State of Iowa

Because EPA received adverse comments, EPA is withdrawing the direct final rule for the approval of revisions to the Iowa State Implementation Plan. EPA published the direct final rule on May 13, 1999 (64 FR 25825). This approval pertained to a set of state rules recently submitted by the Iowa Department of Natural Resources. EPA stated in the direct final rule that if EPA received adverse or critical comments by June 14, 1999, EPA would publish a timely notice of withdrawal in the Federal Register. Therefore, due to receiving adverse comments within the comment period, EPA is withdrawing the direct final rule and will summarize and respond to the comments received and take final rulemaking action in a subsequent final rule. EPA will not institute a second comment period on this document.