Approval and Promulgation of Air Quality Implementation Plans; Montana; Emergency Episode Plan, Columbia Falls, Butte and Missoula Particulate Matter State Implementation Plans, Missoula Carbon Monoxide State Implementation Plan; Correction
The EPA published in the Federal Register on December 6, 1999, a document that, among other things, approved updates to Montana's State Implementation Plan (SIP) relating to the Emergency Episode Plan; Columbia Falls, Butte and Missoula Particulate Matter [particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM-10)] SIPS; and the Missoula Carbon Monoxide (CO) Plan. In the December 6, 1999, rule, EPA inadvertently referenced an incorrect citation to Missouri's SIP in the Code of Federal Regulations. EPA is correcting the citation with this document.