Tetra Tech’s Oil & Gas industry experts understand our clients’ needs and manage every project with exceptional attention to safety. Our portfolio spans the entire hydrocarbon value chain, from upstream exploration and production to the midstream and downstream sectors. Tetra Tech’s regulatory and environmental services include pre-purchase due diligence, siting studies, permitting, air quality permitting and compliance assistance, multimedia regulatory evaluations and analysis, state-of-the-art soil, and groundwater testing and modeling including hydraulic fracturing source water isotope studies, GIS, and remediation and restoration analysis. Our expertise also encompasses full engineering, procurement, and construction management (EPCM) capabilities and construction oversight. We support non-conventional oil play development and infrastructure across North America.