Multi-pathway risk assessment for a hazardous waste management facility
Conference
·
OSTI ID:234027
- Lafarge Corp., Xenia, OH (United States)
In 1990, National Cement of California (National) and Systech Environmental Corporation (Systech) submitted permit renewal applications for the storage, blending, and burning of hazardous waste at the Lebec, California cement plant. The Department of Toxic Substance Control (DTSC), then a branch of the California Department of Health Services (DHS), required these companies to prepare a long and short-term multi-pathway, facility-wide, health risk assessment (HRA). Included in the scope of this assessment were stack emissions associated with the use of hazardous waste as fuel in the cement kiln and fugitive emissions from the hazardous waste storage facility. More than 65 organic compounds and metals were evaluated. Fourteen receptor locations were chosen for evaluation, including 6 sensitive receptors and 7 nearby towns and residences. At each receptor location an analysis of the potential pathways and scenarios under which contact with the emitted compounds could occur was carried out. The pathways included inhalation, ingestion of soils, fish, cattle and vegetables, dermal contact, and ingestion of mothers milk. Exposure durations of 9, 30, and 70 years were considered. All risks and hazards were found to be within limits acceptable to the DTSC. The final HRA was accepted by the agency in 1992 and was presented to the public in a meeting that year. This paper will review the development of the HRA protocol and summarize the results of the assessment.
- OSTI ID:
- 234027
- Report Number(s):
- CONF-9404294--
- Country of Publication:
- United States
- Language:
- English
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