The California Biomonitoring Program hosted a meeting of its Scientific Guidance Panel (a panel of expert scientists from outside of state government) on July 25. This meeting included presentations from the California Department of Public Health (CDPH) and Office of Environmental Health Hazard Assessment (OEHHA), as well as the results from the Foam Replacement Environment Exposure Study (FREES), discussion on flame retardants and a preliminary screening for future consideration of potentially designating quaternary ammonium compounds (Quats) into the program.

From the preliminary screening of Quats, the Scientific Guidance Panel directed OEHHA to develop a “designated chemical document” on Quats, which is a more detailed review of the chemical class than the preliminary screening. This review is expected to take approximately one year. After receiving OEHHA’s review,  the Scientific Guidance Panel will decide if Quats should be added to the biomonitoring program’s designated chemical list.

HCPA will continue to participate as appropriate and update members accordingly.

Please contact Nicholas Georges, Senior Director, Scientific & International Affairs, at with additional comments or questions.


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