Attorney Dave Metres served as a panelist for Gradient’s webinar, “New Chemicals and New Approaches Under California Proposition 65,” held on December 1, 2020.


  • Joel Cohen, Sc.D., DABT – Senior Toxicologist at Gradient
  • Michael Peterson, M.E.M., DABT – Principal at Gradient
  • Dave Metres – Attorney at Barg Coffin Lewis and Trapp, LLP


Proposition 65 (Prop 65) regulations and guidelines are constantly evolving, and staying on top of changes is essential for companies hoping to sell products in California. Gradient teamed with the law firm Barg Coffin Lewis & Trapp to share technical and legal insights on this law’s impact on a diverse array of products. Through decades of work, Gradient has been intimately involved with Prop 65 projects, including proactively assisting companies with conforming to this regulation as well as working with companies involved in litigation under the statute.

Dave shared insights on the future of Prop 65’s regulation of per- and polyfluoroalkyl substances (PFAS) in consumer products as well as major developments affecting acrylamide in foods.

This webinar explored new tools and approaches, including the recently released All Ages Lead Model (AALM), modeling consumer exposure to Prop 65-regulated chemicals, as well as chemicals currently being considered for listing or involved in active litigation. Product developers, manufacturers, and legal teams involved in selling products in California markets benefitted from hearing these insights.