SCS Technical Bulletin: Colorado AQCC Regulation 31 – Control of Methane Emissions From Municipal Solid Waste Landfills

On December 18, 2025, the Air Quality Control Commission (AQCC) approved Regulation 31, developed by the Air Pollution Control District (APCD) within the Colorado Department of Public Health and Environment (CDPHE).

SCS Engineers periodically prepares SCS Technical Bulletins – short, clear summaries of rules, plans, and standards. The Colorado Department of Public Health & Environment (CDPHE) Air Pollution Control Division adopted the Colorado Landfill Methane Rule – Regulation No. 31 in 2025, which sets methane emission reduction requirements for landfills in the state.

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Additional Colorado AQCC Regulation 31 Resources:

• Engineering and Operations: Landfill gas operations, monitoring, and collection and control systems (GCCS).
• Monitoring and Data Collection SCS eTools®, used on over one-third of U.S. landfills for landfill monitoring and data collection that meets the strictest reporting standards.
• SCS Remote Monitoring and Control provides supervisory control and data acquisition (SCADA), data management, and reporting by combining sensors with our drone-based technologies to monitor landfill gas emissions and detect leaks, eliminating a significant portion of the manual effort required for compliance while improving operational safety and accuracy.

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