As of January 1, 2014, the Colorado Air Pollution Control Division no longer accepts blank APENs. Additional fees will apply if an APEN is submitted without the necessary information. An application with missing information may result in longer processing times. Please note that all APEN submissions should be completed using forms currently supplied by the Division (see Reg. 3, Part A, Section II.A). If you need assistance, please refer to:
We issue construction permits to commercial and industrial air pollution sources in Colorado to ensure compliance with air quality regulations. The regulations are designed to protect the public's health and welfare and to maintain ambient air quality standards. We process approximately 1,500 construction permit applications each year.
Some sources in the oil and gas and land development industries may qualify for the streamlined general permit process if they meet certain operating and emissions criteria. For more information: