Michael Truex is a Senior Project Manager with experience at Pacific Northwest National Laboratory (PNNL), Richland, Washington, since 1992 in remediation research and field applications. His experience includes work at Department of Energy (DOE), Department of Defense (DoD), and private remediation sites. Major programs include support to the DOE Hanford Site providing technical and programmatic support for assessing and implementing improved remediation and characterization technologies. Mike has also been a principle investigator for multiple treatability tests at the Hanford site. Mike has managed and participated in large programs providing technical support to the DoD installations and has been a co-principle investigator for multiple remediation technology demonstration projects funded through the DoD. In addition to authoring numerous journal articles and technical reports, Mike has also authored multiple technical guidance documents. He led publication of technical guidance documents for performance assessment of soil vapor extraction systems and for pump-and-treat remediation. He has also authored and contributed to documents that provide guidance for Monitored Natural Attenuation, evaluation of contaminant transport in the vadose zone, and development of conceptual models.