EPA Approves Arizona Plan to Reduce Carbon Monoxide Emissions in Tucson Area

Summary

The US Environmental Protection Agency (EPA) is approving two revisions to the Arizona State Implementation Plan, including a 2008 plan to reduce carbon monoxide emissions in the Tucson area, and a provision extending the state's vehicle emissions inspection program until 2016. This action makes the commitments related to carbon monoxide maintenance in the Tucson Air Planning Area federally enforceable.