Bergeson & Campbell, P.C. (B&C®) is a Washington, D.C. law firm providing chemical and chemical product stakeholders unparalleled experience, judgment, and excellence in matters relating to TSCA, and other global chemical management programs. EPA Releases Beta Version of ChemExpo, a Tool for Exploring Chemical Use Data Relevant to Exposure Assessment Posted on August 24, 2023 by Lynn L. Bergeson By Lynn L. Bergeson and Carla N.