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Process to assess the compliance of any transportation plan, program or project with air quality control plans. The conformity process is defined by the Clean Air Act. Federal Highway funds are tied to the region’s conformity determination.

Colorado Dept. of Transportation (CDOT)

A state agency responsible for a 9,161 mile highway system, including 3,775 bridges. Each year, this system handles over 28.6 billion vehicle miles of travel. Although the Interstate system accounts for only about 10 percent (915 miles) of the total mileage on the...

Colorado Dept. of Public Health and Environment (CDPHE)

A state agency responsible for the implementation of air quality programs such as oxygenated fuels and the enhanced inspection and maintenance program, the monitoring of daily ambient pollutant levels, and the compliance of industrial and area sources with state and...

Carbon Monoxide (CO)

A colorless, odorless, tasteless gas that impedes the oxygenation of blood. CO is formed in large part by incomplete combustion of fuel.Clean Air Act Amendments (CAAA)The 1990 Clean Air Act is a piece of United States environmental policy relating to the reduction of...


Acronym for Best Available Technology.