The role of multimedia, multi-pathway exposure assessments in risk-based regulations at California hazardous wastes sites
- Lawrence Livermore National Lab., CA (United States)
- California Dept., of Toxic Substances Control, Sacrameto, CA (United States). Office of Scientific Affairs
The Department of Toxic Substances Control (DTSC), within the California Environmental Protection Agency, has the responsibility for managing the State`s hazardous-waste program to protect public health and the environment. The Office of Scientific Affairs (OSA) within the DTSC provides scientific assistance in the areas of toxicology, risk and environmental assessment, training, and guidance to the regional offices within DTSC. Part of this assistance and guidance is the preparation of regulations, scientific standards, guidance documents, and recommended procedures for use by regional staff, local governmental agencies, or responsible parties and their contractors in the characterization and mitigation of hazardous-waste-substances-release sites. CalTOX has been developed as a spreadsheet model to assist in health-risk assessments that address contaminated soils and the contamination of adjacent air, surface water, sediments, and ground water. The model system includes a multimedia transport and transformation model, exposure scenario models, and efforts to quantify and reduce uncertainty in multimedia, multiple-pathway exposure models. This paper lists the objectives of a multimedia, total exposure model; provides an overview of the CalTOX model components; and describes the philosophy under which the model was developed.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- California State Government, Sacramento, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10140061
- Report Number(s):
- UCRL-JC-114347; CONF-940312-58; ON: DE94009378
- Resource Relation:
- Conference: 2. Probabilistic safety assessment and management conference (PSAM),San Diego, CA (United States),20-24 Mar 1994; Other Information: PBD: Oct 1993
- Country of Publication:
- United States
- Language:
- English
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