Mark Malinowski is the Branch Chief over the Santa Susana Field Laboratory and Northern California Schools Programs for the California Department of Toxic Substances Control (DTSC) in Sacramento, California. Mark has worked for DTSC since 1988 and is experienced as a project manager on military facilities and manages DTSC project managers and senior level geologic technical support. As a state regulatory agency representative, he participated in remedial process optimization teams for DOD facilities and enjoys researching and proving new approaches and technologies to address environmental investigations and cleanups. Since 2005, he has been responsible for overseeing the development and implementation of school investigation and cleanup guidance and policies. With the ITRC, Mark was actively involved in the Permeable Reactive Barriers, Polyethylene Diffusion Bag Samplers, and Perchlorate teams and is a co-leader of the Incremental Sampling Methodology (ISM) team. Mark earned a bachelor’s degree in geology from Colorado State University, in Fort Collins, Colorado, in 1980 and an Environmental Studies degree from California State University in Sacramento in 1986, and is a California licensed professional geologist.