Scott Warner is a Principal Hydrogeologist and the Global Practice Area Leader in Environmental Engineering and Remediation with AMEC Environment and Infrastructure, located in Oakland, California. Scott has worked with the firm since 1991 specializing in groundwater remediation with specific expertise in enhanced bioremediation, permeable reactive barriers (PRB), and geochemical manipulation for treatment groundwater impacted by chlorinated and petroleum hydrocarbons, metals, and radionuclides. Scott has authored or co-authored more than 25 publications on the subjects of groundwater remediation, hydraulics, and geochemistry for both peer-reviewed journals and conference proceedings, and has given more than 50 presentations on these and related subjects. He is co-editor of an Oxford University Press book on dense non-aqueous-phase liquid (DNAPL) characterization and remediation and was the co-developer/co-instructor of national and international courses for the Remediation Technology Development Forum (RTDF), the U.S. Environmental Protection Agency (U.S. EPA), and the Interstate Technology Regulatory Council (ITRC) on the design and use of PRBs. Scott also is on the board of directors for the Bay Planning Coalition, a San Francisco Bay Area organization whose members represent industry, local governments and ports, recreational users, business and environmental organizations, landowners, and water-related companies that advocate balanced use and regulation of the San Francisco Bay and Delta resources. Scott has contributed to ITRC as a team member and instructor for ITRC's PRB teams since 1998. He earned a bachelor's degree in engineering geology from University of California, Los Angeles in 1983 and a master's in geology (hydrogeology specialization) in 1986 from Indiana University, Bloomington. Scott is a registered professional geologist in several states and is a certified/licensed hydrogeologist in California and Washington and a certified engineering geologist in California.