Nathan Hagelin is the Practice Area Leader for Environmental Remediation for Amec Foster Wheeler Environment and Infrastructure, Inc. in Portland, Maine and has been with the company since 1989. Nathan leads Amec Foster Wheeler's environmental remediation resources, drives technical quality in the delivery of remediation services, develops client technical symposiums and internal training programs, attracts and retains key remediation resources, and leads AMEC's participation in key conferences and trade groups. He is a Senior Principal Geologist with environmental consulting experience in both the public and private sectors, and prior experience as a U.S. Geological Survey Hydrologist (1986 to 1989). His experience includes hydrogeologic investigations, remedial action planning, remedial technology selection and implementation, solid- and hazardous-waste landfill closures, PCB Remediation, RCRA corrective action, industrial facility closure, litigation support, brownfields redevelopment, consent agreement/order negotiations. He serves as project manager, technical leader and senior technical reviewer on projects ranging from site assessments to remedial investigations, RCRA facility investigations, remedial designs and remedial actions, and long term operation, maintenance, and monitoring programs. His areas of expertise include: RCRA, CRCLA, TSCA/Megarule, PCB and VOC remediation, hydrogeology - contamination assessments, DNAPL Investigations, remedial investigations, landfill closure, landfill post-closure monitoring and maintenance programs, RCRA Facility Investigations, RCRA facility closures, voluntary corrective actions, technical writing, environmental site assessments, regulatory negotiations, and technical support for litigation. He has contributed to ITRC since 2012 as a member and trainer for the DNAPL Site Characterization team and since 2015 as a member of the Characterization and Remediation in Fractured Rock team. Nathan earned a bachelor's degree in Geology from the University of Connecticut in Storrs, Connecticut in 1983 and a master's degree in Geology from the City College of New York in New York City in 1987. He is a Certified Geologist in the State of Maine and a Licensed Site Professional in the State of Connecticut.