Caitlin H. Bell, PE, a principal engineer and the lead expert on 1,4-Dioxane for Arcadis, with nearly 10 years of consulting experience. A remediation engineer who focuses on subsurface treatment of soil and groundwater using in situ techniques, she specifically focuses on in situ bioremediation applications for a variety of chemicals of concern, including emerging contaminants. Ms. Bell serves as a technical resource to clients on topics such as molecular biology tools, bioaugmentation, compound-specific isotope analysis, and challenging bioremediation approaches for compounds like 1,4-dioxane. She was a member of the team who authored the Interstate Technology & Regulatory Council’s Environmental Molecular Diagnostics technical guidance document and has presented routinely on remediation topics at industry conferences. Ms. Bell is also a coauthor of the upcoming book, Handbook of Emerging Contaminants. She holds a B.S. in chemical engineering and an M.S. in environmental engineering.