Approval and Promulgation of Implementation Plans for Kentucky: Inspection and Maintenance Program Removal for Northern Kentucky; New Solvent Metal Cleaning Equipment; Commercial Motor Vehicle and Mobile Equipment Refinishing Operations

EPA is approving four related revisions to the Kentucky State Implementation Plan (SIP) submitted by the Commonwealth of Kentucky on February 9, 2005. These revisions affect the Northern Kentucky area, which is comprised of the Kentucky Counties of Boone, Campbell, and Kenton, and is part of the Cincinnati-Hamilton Metropolitan Statistical Area. EPA is approving the movement of the regulation underlying the Northern Kentucky inspection and maintenance (I/M) program from the regulatory portion of the Kentucky SIP to the contingency measures section of the Northern Kentucky 1-Hour Ozone Maintenance Plan. EPA is also approving revisions to a Kentucky rule which provides for the control of volatile organic compounds (VOCs) from new solvent metal cleaning equipment. Further, EPA is approving a new rule into the Kentucky SIP affecting commercial motor vehicle and mobile equipment refinishing operations in Northern Kentucky. Finally, EPA is approving updated mobile source category emissions projections with updated, state motor vehicle emission budgets (MVEBs) for the year 2010. This final rule addresses comments made on EPA's proposed rulemaking previously published for this action.