Shannon & Wilson

Tetra Tech is one of the leading providers of specialized management consulting and technical services. The company focuses on the areas of resource management, infrastructure, and communications. Tetra Tech was founded to provide engineering services related to waterways, harbors and coastal areas. The company has since increased the size and scope of its business and expanded its service offerings through a series of strategic acquisitions and internal growth. Tetra Tech provides environmental services, water and wastewater management, infrastructure services, security design and outsourced technical services.

Terracon Consultants is an employee-owned company dedicated to providing comprehensive support throughout the lifecycle of various projects, from site selection to construction and asset management. With over 7,000 employees and more than 180 locations nationwide, they specialize in environmental consulting, geotechnical engineering, materials testing, and facility engineering. Rooted in values of excellence and integrity, Terracon prioritizes innovation and sustainability while offering strategic insights to minimize risks and unlock opportunities for their clients. Their commitment to caring for clients, partners, and communities ensures that they remain at the forefront of industry advancements and project success. Generated from the website

Established in 1951, URS Corporation offers a range of professional planning, engineering and architectural design, environmental, construction, and program and construction management services. It also offers system integration, operations and maintenance, management and specialized technical services. With over 50,000 employees, URS Corporation maintains a global presence. It provides services to the transportation, power, industrial infrastructure and process, environmental, nuclear management, wastewater, mining, and defense and security industries. URS Corporation has the URS, EG&G and Washington divisions. The URS Division provides planning, design, and program and construction management services for all types of transportation and water resources infrastructure, as well as for health care complexes, schools, courthouses and other public buildings. The EG&G Division primarily serves government clients, including the departments of Defense and Homeland Security. Headquartered in San Francisco, URS Corporation maintains a presence in Seattle.