Tetra Tech, Inc. (NASDAQ: TTEK), a leading provider of high-end consulting and engineering services in water, environment, and sustainable infrastructure, announced today that California’s Encina Wastewater Authority (EWA) has selected Tetra Tech for a single-award contract to deliver digital automation and operational technology (OT) network solutions for the Cogeneration Low-Emission Augmentation and Retrofit (CLEAR) project.