Approval and Promulgation of Air Quality Implementation Plans; State of Colorado; Trip Reduction, and Reduction of Diesel Vehicle Emissions

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EPA is taking direct final action approving State Implementation Plan (SIP) revisions submitted by the Governor of Colorado on May 10, 2000. This submittal revises Colorado's Regulation 12, Reduction of Diesel Vehicle Emissions, and repeals Colorado's Regulation 9, Trip Reduction. EPA is taking this action under section 110 of the Clean Air Act (CAA).