Tetra Tech, Inc. and CGRS, Inc. are partnering with the City of Boulder on their innovative Biogas Use Enhancement Project, a biogas-to-renewable natural gas (RNG) conditioning system under construction at the city鈥檚 Water Resource Recovery Facility (WRRF). Biogas produced from wastewater digesters will be converted into RNG for vehicle fuel for delivery to community partners after injection into the Public Service Company of Colorado delivery systems. The delivery of RNG to the City of Boulder is scheduled for September 2020.
This project will enable the City to qualify for grants available to renewable fuel producers under the U.S. Environmental Protection Agency鈥檚 Renewable Fuel Standard. 鈥淭his Biogas Use Enhancement Project is the next step toward making the WRRF more environmentally sustainable as well as economically viable,鈥� says Chris Douville, Wastewater Treatment Manager for the City of Boulder. 鈥淲e鈥檙e pleased to realize the positive impact on the community鈥檚 climate goals through production and use of RNG as vehicle fuel, as well as the City鈥檚 financial ability to support other renewable energy and sustainability projects in the future through sale of RNG.鈥�
The work includes installing Tetra Tech鈥檚 proprietary BioCNG™ gas conditioning system, replacing the existing cogeneration engines and heat recovery systems, and upgrading the hydronic system used to heat the digesters and other buildings. 鈥淔rom our pioneering work with one of the first biogas-to-RNG projects, more than a decade ago, to this exciting new project, Tetra Tech continues Leading with Science庐 to create sustainable long-term solutions,鈥� said Paul Stout, PE, Tetra Tech Project Manager. 鈥淏y bringing cutting-edge technological and economical solutions to forward-looking clients, we enable them to implement projects that achieve environmental stewardship goals while delivering best-in-class value.鈥�