Engineered CapSure™ transitional cover system and EasyFlo™ shallow gas interception technology demonstrates measurable gains in methane capture and odor mitigation.
ALPHARETTA, Ga. — After successful lab and in-field testing, Watershed Geo has officially launched a first of its kind technology for Municipal Solid Waste (MSW) landfills. This technology significantly improves methane capture, reduces fugitive emissions, and helps operators enhance long-term environmental performance before closure.
The integrated approach includes an advanced 15-year transitional cover along with a patented shallow gas collection system which works with existing infrastructure to collect the gas from the edges and upper areas of the landfill that deep wells are not designed to capture. Not only is the system highly effective, but also affordable—solving challenges landfill operators have faced for years.
CapSure™ Transitional Cover
The engineered cover system, CapSure™, acts as the first barrier, suppressing odors, reducing emissions, and minimizing water infiltration and erosion. Built with a structured geomembrane and an aerodynamic windbreak layer, it’s designed for durability—lasting up to 15 years—while still allowing safe site access and preserving valuable airspace.
EasyFlo™ Gas Collection
Since surface control is only part of the equation, the EasyFlo™ gas collection system is added to take it one step further. Integrated with the CapSure system, these shallow gas collectors are installed at the surface to intercept residual methane and channel it back into the active gas network, improving overall capture efficiency and reducing fugitive emissions. EasyFlo captures the gas that deep-well systems are not designed to capture resulting in increased LFG quantity.
To demonstrate field performance, the integrated system was deployed at an active landfill operating 24 deep gas collection wells that continued to experience persistent odor issues and surface emissions.
Following installation, the site was monitored for months on applied vacuum, gas flow volume, and methane composition. Pre- and post-installation surface emission surveys were also conducted using drone technology to evaluate methane reductions across the site.
The results showed measurable performance improvements, including a 23% increase in captured landfill gas and significant reductions in surface methane emissions.
These gains underscore the importance of addressing multiple gas pathways simultaneously, rather than expecting a single system to handle increasingly complex conditions.
Environmental and Financial Upside
There’s also a financial upside. As more landfills invest in renewable natural gas (RNG) facilities, capturing additional methane directly translates into increased revenue potential.
By recovering gas that would otherwise be lost, operators can turn an environmental challenge into a valuable resource. Financial models show that 20-30% of additional methane more than cover the cost of the system and provide future income revenue streams.
“Our clients have been asking for this transitional capping technology for years. We delivered with an integrated approach demonstrating how engineered capping systems and shallow gas interception can work together to enhance the performance of traditional landfill infrastructure,” said Brad Cooley, Watershed Geo’s Senior Vice President of Sales.
“For landfill operators, CapSure and EasyFlo provide a solution to address ongoing odor concerns, regulatory pressures, and emissions control challenges, all while supplying a practical, affordable and scalable method to generate additional revenue through RNG capture.”
For more information on this technology, send us a request on our contact us page.
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