Columbia Energy & Envrmnental

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.

Shannon & Wilson Inc., founded in 1954, is a pioneering firm in geotechnical engineering and environmental consulting, boasting over 70 years of industry experience. With a focus on innovation and technical excellence, the company offers a comprehensive range of services in civil engineering, water resources, and contamination remediation, serving various markets including transportation, property development, and energy. Headquartered in Pasco, WA, Shannon & Wilson has developed a strong global presence through its expertise in areas such as geologic hazards, underground engineering, and construction management. The employee-owned company prides itself on fostering collaboration and delivering specialized solutions that address complex infrastructure and environmental challenges. Generated from the website