Operating Units
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Tetra Tech EC, Inc.’s operating units provide a wide range of services and further expand our service line and strengthen our company.
Advent, A Tetra Tech CompanyAdvent, a Tetra Tech Company is a multi-disciplinary engineering, consulting, and licensing firm that provides services to the nuclear power industry. Advent provides award-winning services in the areas of information management, design process improvement, regulatory compliance, complex problem solving, engineering design and evaluations, and quality assurance. Advent’s expertise includes environmental qualification, Appendix R fire protection, new plant COL support, existing plant design modification 50.59 evaluations, nuclear site security support, FSAR and regulatory compliance consulting, engineering analysis (TH, HELB, etc.), and emergency planning. Advent is headquartered in Ann Arbor, Michigan. (734) 930-7500.
The Delaney Group, Inc.The Delaney Group provides program management and construction services for energy, heavy civil, site development, and infrastructure projects, including wind energy, roads, bridges, grading, utilities, base realignment and closure (BRAC) services, and water/wastewater treatment and conveyance facilities. Its headquarters is located in Gloversville, New York. (518) 661-5304.
Tetra Tech Construction Services, Inc.Tetra Tech Construction Services, Inc. (CSI), provides wired communications services, including design, acquisition, management, construction, installation, testing, and maintenance for all types of narrowband, broadband, and wireless networks. They are headquartered in Littleton, Colorado. (303) 741-3245.
Tetra Tech Electric, Inc.Tetra Tech Electric, Inc. (TtEI) is a full-service electrical contractor that provides project management and construction services for transmission, distribution, substation, switchyard, generation, and renewable energy projects. TtEI’s capabilities include design-build, wind energy, collection systems, tower wiring, overhead power lines, underground systems, utility installations, and electrical facilities. Its headquarters is located in Portland, Oregon. (503) 396-7409.
Tetra Tech Facilities ConstructionTetra Tech Facilities Construction is a general contracting division of Tetra Tech that provides full-service design/build, guaranteed maximum price, design-bid-build, CM-at-risk, and agency program/construction management services worldwide for the U.S. Department of Defense, other federal /local government agencies, and private and commercial clients. Its headquarters is located in Alexandria, Virginia. (571) 527-4440.
Tetra Tech Tesoro, Inc.Tetra Tech Tesoro is a construction services firm with a proven track record of success, particularly in design-build project delivery for federal clients including the U.S. Navy, U.S. Coast Guard, and other federal government entities. Tetra Tech Tesoro provides construction management and other construction services to build and repair facilities in support of military construction programs, military transformation initiatives, and the U.S. Department of Defense’s Base Realignment and Closure (BRAC) activities. The firm has supported the construction and rehabilitation of military headquarters, administrative facilities, operational facilities, training facilities, barracks, family housing, dining facilities, personnel support facilities, industrial facilities, and piers. Tetra Tech Tesoro is headquartered in Virginia Beach, Virginia. (757) 518-8491.
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