TETRA TECH, INC.

TETRA TECH, INC. delivers specialized environmental consulting and engineering services to federal agencies, with deep expertise in hazardous waste assessment, environmental permitting, soil and groundwater remediation, and PFAS characterization. The firm provides end-to-end technical support for complex environmental compliance challenges, including site investigations, restoration planning, regulatory documentation, and A-E services for military and civilian infrastructure. Their work consistently involves field sampling, geotechnical analysis, environmental modeling, and remediation strategy development for munitions, radiological, and chemical contaminants, often under stringent federal standards such as RCRA, CERCLA, and NEPA. A key differentiator is their integrated approach combining engineering design with scientific analysis to support mission-critical operations at sensitive federal sites. The contractor maintains a strong, sustained relationship with NASA, delivering environmental restoration and compliance services across major facilities including Kennedy Space Center, Goddard Space Flight Center, and Wallops Flight Facility. They also provide critical environmental engineering support to the Department of Homeland Security, particularly for U.S. Coast Guard installations, addressing soil contamination, site remediation, and environmental documentation for new construction. The Department of Defense engages them for environmental permitting and A-E services tied to Sentinel program infrastructure and military land use compliance. Their primary focus is on NAICS 541620 (Environmental Consulting Services) and 541330 (Engineering Services), positioning them as a technical leader in federal environmental remediation and infrastructure compliance. They specialize in the intersection of environmental science and civil engineering, serving defense, space, and homeland security sectors with science-driven, regulatory-compliant solutions. TETRA TECH, INC. is a large, multi-disciplinary firm headquartered in Pittsburgh, PA, operating as a 2L entity with no specific government certifications on record. They maintain a national presence through project execution across DoD, DHS, and NASA installations, with no indication of geographic limitation in service delivery.