Virginia Yingling is a hydrogeologist at the Minnesota Department of Health (MDH), where she has investigated contaminated drinking water sites since 2000. Prior to that, she worked as a hydrogeologist for the Minnesota Pollution Control Agency, as an environmental consultant at Twin City Testing, Inc. and as a field assistant for the USGS. She holds a B.S. from Penn State and an M.S. from the University of Wyoming, both in geology. Yingling has 21 years of experience in environmental investigations and is the MDH's lead investigator on poly- and perfluoralkyl substances (PFAS) and several other chemicals of emerging concern. She is the Co-Team Leader for the PFAS Team for the Interstate Technology & Regulatory Council (ITRC).