Approval and Promulgation of Implementation Plans and Operating Permits Program; State of Iowa

EPA is approving the State Implementation Plan (SIP) revision submitted by the state of Iowa. This revision includes the general rulemaking that Iowa completes for the purpose of updating and clarifying various rules, and making other minor revisions as generally described in this document. EPA is also proposing approval of revisions to the Iowa Operating Permits Program for the purpose of updating and clarifying various rules included in the general rulemaking. These revisions add new definitions, as well as an administrative correction to a previously submitted rule. Approval of these revisions will ensure consistency between the state and Federally-approved rules, and ensure Federal enforceability of the State's revised air program rules.