Psomas is a full-service design firm that serves the public and private sector clients in the United States. It provides transportation and water and wastewater engineering services. The company also offers land and institutional site development, surveying, planning, consulting, and program and construction management solutions. Founded in 1946, Psomas operates in California, Arizona and Utah. In addition, it provides services for customers in the transportation, institutional and private land development markets. The company s clients include Dixon High School, Ironwood Ridge High School, Aubrey Park and St. Jude Medical Center. Psomas has received the Engineering Excellence Award.