Project: McKinney Landfill Gas Destruction
The McKinney Landfill captures methane gas that would otherwise be emitted into the atmosphere from anaerobic decomposition within the landfill.
The McKinney Landfill is a large, closed landfill that is owned and maintained by the North Texas Municipal Water District. The landfill’s 2.5 million metric tons of waste generates a large amount of methane. By capturing this methane gas the project will reduce emissions by an average of 75,000 metric tons of carbon dioxide equivalent each year.
The landfill generates a large amount of methane but only a minimal amount of non-methane organic compounds, therefore the landfill is not required to destroy the gas it produces. The motivation for this project was strictly voluntary. The gas destruction system has been financed, developed and operated by a third party developer interested in the revenues from carbon emission reductions. The project was originally designed such that carbon emission reduction sales alone would support the gas collection and flaring.
“Carbon credit sales have provided an effective method to fund the collection system and flare facility and are an important component in the development of a renewable power project at this site," says Chris Davis, VP Business Development and Project Developer.
The project reduces ambient odor by capturing gas that would otherwise have vented into the air. In addition, the project helps improve water quality by destroying organic compounds that might otherwise leak into groundwater. The project has also lead to additional renewable energy production as the developer has since installed generators that utilize the captured methane gas and convert it into energy.
Emission Reduction Verification and Registration
The project continuously monitors gas flow and methane content to verify the amount of methane captured. Emission reductions will be limited by a calculation of the baseline emissions (i.e. what would have been emitted in the absence of the project) and will be verified by an accredited third-party verifier using the Climate Action Reserve's (CAR) Landfill Project Protocol. The Climate Action Reserve is a Green-e Climate Endorsed independent third-party greenhouse gas (GHG) Project Certification Program.
All carbon offsets generated by the McKinney project are registered by the Climate Action Reserve and receive a unique serial number. This ensures that the carbon offsets are not double counted and, once retired, are not sold or transferred again.3Degrees offers purchasers the option to buy Green-e Climate certified carbon offsets sourced from this project.