Tetra Tech offers environmental, engineering, and construction solutions in all areas of the natural resource spectrum. We are a leading provider of mineral resource engineering and technical support services for mining clients around the world. Our oil and gas experience includes delivery, refining, processing, chemical and petrochemical services, pipelines and terminals, and cogeneration projects. Tetra Tech also provides best-in-class plant engineering and industrial services to help clients expand, modernize, operate, and maintain existing facilities.