Risk Assessment for TCE and Related Chemicals Based on Multi-Component, Multi-Media Transport Models

by H. C. Yeh, Univ of California, United States,
W. E. Kastenberg, Univ of California, United States,

Document Type: Proceeding Paper

Part of: Environmental Engineering


Trichloroethylene (TCE) is known to undergo anaerobic transformation and produces daughter products including dichloroethene, and vinyl chloride which have been known as possible carcinogenic agents. In simulating the fate of these chemicals in the environment, their pathways to humans and their subsequent health risk, multi-component multi-media transport models are needed. The resulting environmental concentrations are used to determine the most important exposure pathways. These are based on exposure rate calculations for various pathways such as inhalation, dermal contact and ingestion. The health risk assessment is then conducted by using EPA's unit risk approach. Comparison of the health risk with and without biodecay effects are made and are presented.

Subject Headings: Health hazards | Risk management | TCE | Multimedia | Anaerobic processes | Public health and safety | Chloride | Aging (material)

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