Our solid waste experts work with biogas, landfill gas, industrial, organics management, air quality, and transfer, and recyc ... ling and processing clients across North America. Our clients range from rural communities to large metropolitan solid waste authorities and include some of the largest private waste management firms in the world. Tetra Tech solid waste experts are industry leaders who helped to develop and shape solid waste, energy, and environmental technology over the past 40 years. Our engineering and consulting expertise spans the full life cycle of solid waste facility development projects, from planning, permitting, and design, to construction and operations. Engineering News-Record (ENR) magazine has ranked Tetra Tech as a top Solid Waste firm in the United States for the past ten years. Tetra Tech has the experience and resources to provide solutions to the most complex waste management challenges. Tetra Tech offers services in seven key areas. We provide sustainable and innovative solutions focusing primarily on resource management, infrastructure, and the environment. We work collaboratively with clients to evaluate how to incorporate the newest technologies—including anaerobic digestion, gasification, and pyrolysis—into local waste management systems. Tetra Tech also evaluates, designs, constructs, and operates innovative systems to convert landfill gas to energy. read more