Tetra Tech maintains business practice standards that are intended to protect the company’s reputation; the quality of its products and services; and the best interests of its clients, shareholders, and employees. Tetra Tech and its employees are required to demonstrate a commitment to the highest standards of ethical conduct through adherence to its Corporate Code of Conduct. As part of the company’s supply chain management, Tetra Tech also requires all vendors, suppliers, and subcontractors to maintain the same level of integrity. All vendors are required to comply with Tetra Tech’s Vendor Code of Conduct. Any vendor interested in providing goods or services to Tetra Tech should download the Tetra Tech Vendor Code of Conduct.