INTERA Incorporated

AECOM is an international professional technical services company providing consulting, design, program and construction management and operations and maintenance support to the transportation, environmental and building industries. The company serves both government and private clients. AECOM also provides technical support, international development assistance, and mining and power services. AECOM is headquartered in Los Angeles and operates additional offices throughout the United States., Canada, Asia, the Middle East, Africa, Australia and Europe.

Tetra Tech EC Inc. (TtEC) is one of the leading providers of consulting, engineering, remediation and construction services. The company offers a range of services, such as construction, design and engineering, economic, social, and cultural resources and environmental sciences. Based in Richland, Wash., it is a subsidiary of Tetra Tech Inc. The company's projects span industrial and sediments, ports, harbors and waterways, nuclear, energy and Department of Defense. In addition, Tetra Tech EC Inc. serves federal, state, and local government agencies.

DelHur Industries, Inc. is a heavy civil general contractor with over 45 years of experience. Licensed in 17 western states and headquartered in Port Angeles, Washington, DelHur has additional offices in Richland, Washington Hermiston, Oregon Durango, Colorado and Andrews, Texas.DelHur serves both private commercial clients, as well as, government and municipal clients. DelHur provides services for numerous market sectors such as, Waste Management, Mining, Oil and Gas, Energy, Water Resource, Environmental, and more.DelHur capabilities include, but are not limited tobrLandfill Facility Construction, Expansion and ClosurebrMine Site Development and ReclamationbrOil and Gas Industry Construction Support ServicesbrEnvironmental RemediationbrEarthen and RCC Dam, Reservoir, Lagoon and Pond ConstructionbrRoad and Railroad ConstructionbrExcavation and EmbankmentbrAggregate Crushing and Processing