Colorado Air Permitting regulations & environmental compliance analysis

Colorado Air Permitting: What you need to know

Governing Law and Regulations

Construction permits:

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Air pollutant emissions notice (APEN): 5 Code of Colorado Regulations (CCR) 1001-5 Part A, Section II

Construction permits: 5 CCR 1001-5 Part B

Major source construction permits: 5 CCR 1001-5 Part D

Major source operating permits: 5 CCR 1001-5 Part C

Other state permits:

General permits: 5 CCR 1001-5 Part B, Section III

Other permitting considerations:

Responsible official: 5 CCR 1001-5 Part A, Section I.B

Emissions statements: 5 CCR 1001-5 Part A, Section II.B

Regulatory Agency

Colorado Department of Public Health and Environment (CDPHE) Office of Environment Air Pollution Control Division (APCD)

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Colorado has developed an air emissions control program regulating stationary sources that meets and, in some cases, exceeds federal standards. The state requires air pollutant emissions notices (APENs) to be filed and fees to be paid before emissions of air pollutants can occur. Construction permits are then issued to all sources emitting over the state-established thresholds, with major sources having to comply with nonattainment New Source Review (NSR) and/or Prevention of Significant Deterioration (PSD) requirements. Title V operating permits are also required for major sources.

• Administration and enforcement. CDPHE's APCD is responsible for the administration and enforcement of the state's air pollution permitting program.

State Requirements


Before initiating any permitting activity, it is important to quantify emissions from the facility and/or the new or modified emissions unit. Having an ...

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