Help in your language: Free language assistance services are available to you. To request assistance in Spanish or another language, please email cdphe_apcd_outreach@state.co.us. Please include the topic and “language assistance” in the subject line. Please also link to the specific information you’d like to access, if possible, such as a web page or document.
Ayuda en el idioma de su preferencia: ofrecemos asistencia en el idioma de su preferencia, sin cargo alguno. Si desea solicitar asistencia en español o en otro idioma, envíe un correo electrónico a cdphe_apcd_outreach@state.co.us. Indique el tema y la frase “language assistance” (asistencia en otro idioma) como asunto de su mensaje. De ser posible, incluya un enlace a la información que desea consultar, como la página web o el documento.
Public information
To provide communities with easy access to enforcement documents, the Air Pollution Control Division publishes finalized enforcement settlements every quarter on the Colorado air quality settlements and orders web page.
To learn about enforcement actions in Colorado, visit the Enforcement Action Reports web page.
Information for regulated entities
Monitoring your emissions and complying with your permit.
This policy was developed to help regulated entities with electronic reporting requirements, including EERs, Stack Test Protocols, CEMS Performance Evaluations, mercury reports, landfill Tier 2 and Tier 3 test protocols, landfill Gas Collection and Control System (GCCS) Design Plans, landfill Design Capacity Reports, landfill Corrective Action Timeline Requests/Alternative Timeline Requests, MACT reports, NSPS reports, and Title V semi-annual and annual reports (semi-annual Monitoring and Permit Deviation reports and Annual Compliance Certification reports).
Opacity and stack testing firms.
Malfunction or upset condition reporting.
Event reporting form and reporting instructions.
- Note: As of January 2025, all Notice of Startup forms must be submitted using the online submission tool. Visit the Electronic submission web page to learn more.
Download this form and submit it electronically.
Information for completing self-certification requirements in your permit.
OTM 52 Outlet Only Testing Protocol.
Procedures for performance testing.
Continuous monitoring system guidelines.
Compliance assistance and enforcement guide.
Developed to help regulated entities understand various enforcement-related rules and procedures.
Calculating rolling 12-month totals of air emissions.
Oil & gas compliance and recordkeeping.
Additional requirements specifically for oil and gas sources, including reporting forms and guidance (LDAR, AIMM, Regulation 7, visible emissions, NSPS OOOO, STEM, etc.).
Portable analyzer monitoring protocol.
Explains how to determine emissions of nitrogen oxides, carbon monoxide and oxygen from natural gas-fired reciprocating engines, combustion turbines, boilers, and process heaters using portable analyzers.
Natural gas transmission and storage segment.
Additional requirements specifically for Colorado's natural gas transmission and storage segment.
Gasoline tank truck certification.
Annual certification form, contact information.
In 2014, the Air Pollution Control Division piloted an engine testing program to gather data and assess engine compliance using a portable electrochemical emissions analyzer.