TETRA TECH, INC.

TETRA TECH, INC. specializes in environmental consulting services, delivering technical expertise in site assessment, remediation design, and regulatory compliance for contaminated land and water systems. Their work includes preliminary assessments, removal actions for hazardous substances such as lead and VOCs, soil and subsurface gas sampling, indoor air quality evaluations, and data management for Superfund sites. They provide full-cycle environmental engineering support, from risk assessment and feasibility studies to implementation of remedial actions under EPA oversight, with a strong focus on human and ecological health protection. Their technical capabilities extend to field sampling protocols, contaminant fate modeling, and regulatory documentation aligned with CERCLA and RCRA frameworks. The contractor maintains a deep, sustained relationship with the Environmental Protection Agency, consistently supporting its regional offices in executing emergency response actions, long-term remediation projects, and superfund site investigations. Their work for the Department of Defense centers on environmental engineering services for military installations, including remedial investigations and risk assessments at historic contamination sites. These engagements reflect a pattern of trusted, recurring support for mission-critical environmental compliance and cleanup activities. The primary focus is on NAICS 541620, environmental consulting services, which encompasses site characterization, regulatory strategy, and remediation execution for industrial, municipal, and federal facilities. The firm is positioned as a technical execution partner for complex environmental challenges requiring multidisciplinary science and engineering integration. A secondary focus on engineering services (541330) supports environmental infrastructure and remedial design. TETRA TECH, INC. is a large, multi-regional contractor based in Kansas City, Missouri, operating under a 2L corporate structure. While no government certifications are listed, its consistent award history with federal environmental agencies underscores its credibility and operational readiness in highly regulated federal markets.