Air quality

Air emissions from business and industry

Info on oil & gas, construction, operating, greenhouse gas permits; inspection/enforcement for stationary sources of air pollution; regulatory development for clean air goals & standards; small business assistance

Motor vehicle emissions

Find Emissions Technical Centers, details of the Diesel Emissions Control Program and information about automobile testing

Indoor air quality

Indoor air quality problems, information about mold

Indoor burning

Health effects of wood smoke, reporting and enforcing violations, approved indoor burning devices

Outdoor burning

Smoke permits, burn day tools


Forms, fees and reference documents for our Chlorofluorocarbon Control Program

Air quality planning and outreach

Air Quality Attainment Planning and state implementation plans, ozone information and planning efforts, regional haze, SIPs


Climate change


Information on Colorado greenhouse gases permitting and reports, Environmental Protection Agency mandatory reporting and tailoring rules, federal greenhouse gas regulations

Ozone information


Ozone and your health, ozone planning information for industry, history of ozone levels in Colorado