Approval and Promulgation of Implementation Plans: Alabama: Approval of Revisions to the Visible Emissions Rule

EPA is taking final action to approve revisions to the Visible Emissions portion of the State Implementation Plan (SIP) submitted to EPA by the State of Alabama, via the Alabama Department of Environmental Management (ADEM), on September 11, 2003 (the "2003 ADEM submittal"), and amended by a revision submitted to EPA on August 22, 2008 (the "2008 ADEM amendment"). The open burning portion of the State of Alabama's 2003 ADEM submittal was previously approved in a separate action on March 9, 2006 (71 FR 12138) and is not relevant to this action. These revisions amend the requirements for units that are required to operate continuous opacity monitoring systems (COMS) and that are not subject to any opacity limits other than those of the Alabama SIP.