William Cyrs, MS, CIH
Supervising Health Scientist 1) Cardno ChemRisk, San Francisco, CA
Mr. William Cyrs is a Supervising Health Scientist with Cardno ChemRisk. His principal areas of training and expertise include industrial hygiene, exposure assessment, exposure reconstruction, hazard communication, occupational exposure limit development or management, and aerosol technology with an emphasis on nanoparticles. He has analyzed data or assessed risk regarding 2,3-pentanedione, acrylonitrile-butadiene-styrene or ABS, asbestos, BTEX, carbon monoxide, diacetyl, formaldehyde, hydrogen sulfide, paint volatiles, general VOCs, and welding fume exposure. Mr. Cyrs has worked to develop novel methods to assess occupational exposures to nanoparticles, including both filter-based sampling and sampling using complex electronic equipment, and has used all of the major methods available in his practice. Brooke Tvermoes, PhD, DABT Dr. Brooke Tvermoes is a board certified toxicologist and manager of IBM’s global environmental and chemical management programs with experience in exposure assessment, risk assessment, and regulatory support covering a broad range of industrial chemicals and metals. Her primary areas of interest include quantitative human health risk assessments and the development of health based toxicity values. Marisa Kreider, PhD, DABT Dr. Kreider is a board-certified toxicologist and Senior Managing Health Scientist with Cardno ChemRisk and has 12 years of experience assisting clients with toxicology, risk assessment and product stewardship needs. She has managed a variety of project types, including reviewing of toxicological literature for a variety of chemical types; designing, managing and interpreting toxicity studies; conducting or critiquing dose response assessments for chemicals or particulate; and conducting quantitative or qualitative risk assessments of consumer products. She received her PhD from the Department of Pharmacology and Cancer Biology at Duke University in 2005.