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. 31in 2025, which sets methane emission reduction requirements for landfills in the state.
Colorado Regulation 31 requires more landfills to install gas collection systems, tighten monitoring and control requirements (such as phasing out open flares near communities), and mandates biofilters on closed sites to better align with the state’s net-zero goals.
As an environmental engineering, consulting, and contracting firm with a strong portfolio in landfill gasoperations, monitoring, and collection and control systems (GCCS), SCS helps Colorado landfill owners and operators proactively budget, plan for, and implement compliance strategies for the new Colorado landfill methane rule (LMR).
The SCS Technical Bulletin for Colorado Regulation 31 addresses definitions and terminology, clarifies industry practice for the waste industry, and provides for updates and additions to thresholds, advanced monitoring, and remote monitoring for data collection, closed landfills, and flares.
SCS provides these additional resources and services for Colorado LMR compliance, as follows:
Extensive LMR Experience. No other firm has the level of expertise that SCS does in assisting clients with state LMR compliance, including over 80 past state LMR projects.
Local Experts and Staffing. SCS has Colorado-based professional engineers and field staff with extensive experience in the design, installation, operation, and monitoring of GCCSs.
Special Expertise in Micro-Flares. SCS has developed unique experience in the design, installation, and operation of small, enclosed flares, such as those required under the Colorado LMR.
Monitoring and Data Collection. Captured emissions data is useful for optimizing well fields, addressing odor issues, and quantifying emissions for renewable natural gas projects. SCS has developed proven technology, SCS eTools®, used in 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 facility owners and operators with a single secure application for their supervisory control and data acquisition (SCADA), data management, and reporting needs by combining sensors with our drone-based technologies to monitor landfill gas emissions and detect leaks, eliminating a significant portion of the manual effort from compliance while performing operations more safely and accurately.
For more information, contact:
Bill Haley, PE, Project Director, Colorado LMR Lead
Evan Guignon, PE, Project Manager, Colorado LMR Lead
Pat Sullivan, REPA, CPP, BCES, Senior Vice President, National LMR Expert
Contact landfill and compliance experts nationwide at SCS Engineers.
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