Tetra Tech in Phoenix, AZ is a leading provider of consulting, engineering, program management, and technical services, with a global presence of 400 offices and 16,000 employees. Since 2009, Tetra Tech has incorporated Bryan A Stirrat Associates (BAS), enhancing their ability to offer clients an unmatched depth of resources, experience, and stability.
With a team of solid waste professionals that has been supporting clients since 1984, Tetra Tech continues to provide conventional landfill engineering services while also specializing in the planning and design of next-generation waste management facilities, including anaerobic digestion, composting facilities, and landfill gas conversion technologies.
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