Overseeing 134 employees and an annual budget of $31 million, Mattson is responsible for environmental protection and occupational safety and health at the Laboratory's 5,300-acre site, ensuring compliance with federal, state, and local regulations that protect the Laboratory's 3,000 employees, the public, and the environment. Mattson oversees work in the Environmental Protection Division, the Radiological Control Division, and the Safety & Health Services Division, and also manages the ongoing environmental cleanup at the Laboratory, with a focus on ensuring the program meets its soil and groundwater cleanup goals.
Mattson earned her B.S. in Chemistry and Biology from Baker University in 1973, and an M.S.E. in Environmental Engineering from the University of Washington in 1982. She is a registered professional engineer in eight states, a certified project management professional, and an environment, safety, and health professional.
Mattson has been a leader in her field, in industry, and in the community. She has served as national president and member of the board for the Society of Women Engineers (SWE), and served on the board of directors for several other local and national organizations, including the International Network of Women Engineers and Scientists (INWES), United Way of Anderson County, TN, Girl Scouts of the USA, Girls, Inc. of Anderson County, TN, and the Children's Museum of Oak Ridge. She is also a member of multiple professional organizations, including the American Society of Civil Engineers and the Academy of Certified Hazardous Materials Managers.