Tetra Tech Tesoro, Inc. started life as Tesoro Corporation in Virginia in June 1997. The company provides its clients with responsive, high-quality Construction Services, Design-Build Project Delivery and Environmental Services at a reasonable price. It has proven its capabilities through the successful execution of dozens of major multi-million dollar projects and a thousand smaller projects in its 12-year history. Many of those projects involved fast-track, Design-Build, high-visibility renovation and new construction of facilities under the scrutiny of senior government officials, private architects and owners. The company s federal clients include the Navy, Marine Corps, Coast Guard, Air Force, Army, NOAA, NASA, GSA and the Federal Law Enforcement Training Center - providing a broad variety of facilities. Tetra Tech Tesoro also builds schools, hospitals, and clinics for selected commercial and private clients.