Michael Gefell is a principal scientist at Anchor QEA, LLC, in Lakewood, Colorado. Mike began his career in environmental site assessment and remediation in 1989. His primary areas of interest include quantitative hydrogeology, fractured bedrock, NAPL assessment, groundwater/surface water interaction, innovative site characterization methods, modeling, and remedial design. His current project responsibilities include hydrogeology and fate-and-transport assessment for sites involving fractured bedrock and groundwater/surface water interactions. Before joining Anchor QEA, Mike worked for 25 years at BBL and then ARCADIS US, where he served as the site investigations discipline leader and innovation director. Mike has participated on the LNAPL and Fractured Rock teams for the ITRC. Since 1994, he has served as the lead hydrogeologist for the SRSNE Superfund Site, which is presented as “Case Study 1” in this training. Mike is an associate editor of Groundwater journal and received the 2013 Technology Award from the National Ground Water Association. He earned a bachelor's degree in geological sciences from Cornell University in 1986 and a master's degree in geology from the University of California, Davis, in 1989. Mike is a licensed Professional Geologist in the states of Georgia, New York, North Carolina, and Pennsylvania