Approval and Promulgation of Implementation Plans; State of Missouri

EPA is approving a revision to the State Implementation Plan (SIP) submitted by the state of Missouri. This revision applies to Missouri's rule relating to restriction of emission of visible air contaminants and removes redundant definitions, removes an outdated exemption for incinerators used to burn refuse in the outstate area, and clarifies that the test methods stated in the rule shall be used to determine the opacity of visible emissions. EPA is not taking action on the state submitted revisions relating to open burning, as these provisions revise a rule that has not been adopted into the SIP. Approval of this revision will ensure consistency between the state and the Federally approved rules.