Vinyl Chloride Expert Witnesses

Coronado, California

Toxicology, Environmental - PFAS, benzene, PCE, ammonia, lead, petroleum hydrocarbons, vinyl chloride, solvents, forever chemicals, chlorinated hydrocarbons, arsenic, nitrates, metals, TCE, fertilizers, carbon monoxide, dioxins, trichloroethylene, pesticides, risk assessment

Dr. Ryer-Powder is the Principal Health Scientist at Environmental Health Decisions. She brings more than 30 years of experience in human health risk assessment, litigation support, and occupational toxicology to human health hazard and evaluation projects. Dr. Ryer-Powder is responsible for strategic preparation, project management, and evaluation of chemical toxicity for risk assessment and product hazard evaluation projects. She is called upon to investigate and analyze legal and regulatory issues and controversial claims regarding chemical causation of diseases in humans. Her solid technical background, coupled with her frequent involvement in risk and hazard evaluation projects, gives her a broad perspective on the technical, economic and regulatory considerations for human health hazard evaluation work. Dr. Ryer-Powder has done extensive work in the development of exposure levels for lead, petroleum fuels, and ammonia. She has comprehensively researched the toxicological iss...

Westfield, New Jersey

Environmental, Hydrology - PhD UC Berkeley, Certified Hydrologist, National Practice, PFAS AFFF PFOA PFOS, Benzene, Chlorinated Solvents, 1 4-dioxane, Forensic Analysis, Modeling, Visualization, Metals, Source Identification, Apportionment, Causation, Expert Rebuttal, vinyl chloride, Groundwater Contamination, Bedrock, Groundwater pollution, Hydrogeologist

CONTAMINANT HYDROGEOLOGIST: Forensic Hydrogeology, Contaminant Fate and Transport, Site Remediation, Contaminant Source & Timing Analysis, Causation Reports & Rebuttals, Apportionment Analysis, PRP Identification, and Liability Allocation. Groundwater pollution, groundwater contamination, soil contamination, sediment contamination, surface water contamination. EXPERIENCE: 30+ years in consulting, litigation support, research, and teaching. ACADEMICS: PhD UC Berkeley; Research Associate, Lawrence Berkeley National Laboratory; Adjunct Professor LEAD AUTHOR of an internationally recognized book about groundwater fundamentals SPECIALITIES: Groundwater, soil, sediment, and surface water contamination; PFAS, AFFF, PFOA, PFOS, 1,4-dioxane, benzene, emerging contaminants, BTEX, chlorinated solvents (e.g., TCE, PCE, vinyl chloride), vapor intrusion, DNAPL, LNAPL, chromium, CERCLA, RCRA, Superfund, UST, spills, biosolids, landfill, leaching, bacteria, fractured bedrock hydrogeology, risk ...