Keith Warwick , PE earned a B.S. in Civil Engineering from the University of California at Davis. He became a California Professional Engineer in 1983 and has also held PEs in Indiana, Tennessee, Illinois and New York. He has 34 years of civil, environmental and safety engineering experience. He is a professor at Yuba College in Marysville California and instructor at the University of Washington, and has significant experience teaching engineering, safety and related subjects. He has conducted several hundred construction, environmental and safety walk-throughs and audits. He is the author of Arcadia Publishing’s, "California's Highway 99: Modesto to Bakersfield".