Effective April 8, 2015, James R. Pagenkopf retired from his role as Executive Vice President and President of the Water, Environment and Infrastructure (WEI) segment of Tetra Tech Inc. Mr. Pagenkopf, who joined the company in 1976, is moving into a part-time position, supporting the company's U.S. Environmental Protection Agency programs and its key federal pursuits. Effective April 8, 2015, Leslie L. Shoemaker was named to succeed Mr. Pagenkopf as Executive Vice President and President of the WEI segment. Dr. Shoemaker joined the company in 1991, and served as Senior Vice President of Strategic Initiatives since 2008.