Erika L.W. Carter, Ph.D., is a Principal Geoscientist with Arcadis, U.S., Inc. in Maryland. Her 20 years of experience include environmental consulting, academic research, policy, and regulatory. She has extensive experience in passive sampling and has participated in SERDP- and ESTCP-funded passive sampler development teams for the Min-Trap(tm) sampler and a passive sampler for PFAS in environmental waters. Other experience with Arcadis has focused on site and geochemical investigation, remedial strategy, remedial system design and implementation for groundwater impacted by metals and chlorinated solvents. Previous state regulatory experience includes case management and project management of state-funded remediation projects. Dr. Carter holds Ph.D. and M.S. degrees in Geology from the University of Michigan, where she specialized in watershed hydrogeochemistry. She received her B.A. degree in Geology from Haverford and Bryn Mawr Colleges.