Helen Dawson


Helen Dawson is a Principal in Geosyntec Consultants, Inc., in the firm’s Washington D.C. Metro office. She has more than 30 years of experience in hydrogeology with a focus on contaminant transport and fate. She is a recognized expert in vapor intrusion assessment, having served as a lead in developing EPA’s 2002 draft vapor intrusion guidance as well as several EPA technical documents to support finalization of EPAs vapor intrusion guidance in 2015. Her current practice focuses on providing technical and regulatory support to clients on vapor intrusion sites, and she is researching alternative approaches for vapor intrusion assessment though a grant awarded by DOD SERDP ESTCP (ER-201503). She also provides technical and regulatory support on groundwater sites contaminated with LNAPLs, DNAPLs, and metals. She has a Ph.D. in Civil/Environmental Engineering from Stanford University, an M.S. in Geochemistry from the Colorado School of Mines, and a B.S. in Geology from Stanford.

Contact Information: [email protected]; 202-370-4351