Depending on the project, responsibilities may include interpreting federal, state, and local environmental regulations; directing site investigations and remediation activities; evaluating technical data and calculations; and overseeing preparation of reports, plans, cost estimates, permit applications, and other deliverables. With 30,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science to address the entire water cycle, protect and restore the environment, design sustainable and resilient infrastructure, and support the clean energy transition.