威廉·D·比尔·刘易斯（William D. Bill）刘易斯是总部位于南加州的ASL咨询工程师的前董事长兼首席执行官，他们帮助为今天仍在使用的洛杉矶县排水和洪水控制计划设定了框架。他是86岁。
刘易斯（Lewis）于1953年加入该公司，从1979年到1990年担任总裁，然后在第二年担任主席。ASL成长为230名员工，其水上项目的客户包括迪士尼工作室，环球影城和圣地亚哥县水管理局，于1999年被Tetra Tech收购。
After leaving ASL in 1991, Lewis provided forensic engineering services through his consulting firm, Forensic Concepts.
刘易斯还担任了美国工程委员会的主席，并担任国际咨询工程师联合会主席。
“Bill was an exceptional leader for his firm and for the professional community," says Bartlett Patton, former COO of Kleinfelder. "He was incredibly perceptive and imaginative with clients and projects and gave generously of his time."
