STI Engineering has been performing in-situ landfill investigations since 1984, offering consulting and engineering services and solutions to clients, not only for landfill compliance and various areas of management, but also the implementation of systems for rapid airspace recovery, renewable energy production and an array of environmental solutions for leachate, ground water contamination, PFAS and more.

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STI has developed landfill-gas-to-energy and anaerobic digestion systems, which are able to safely and rapidly convert organic waste into landfill gas and biogas respectively, with efficiencies and output levels far higher than traditional sytems in the market today.

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