| Autor: |
Betsy, Ruffle, James, Henderson, Clare, Murphy-Hagan, Gemma, Kirkwood, Frederick, Wolf, Deborah A, Edwards |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Integrated environmental assessment and management. 14(1) |
| ISSN: |
1551-3793 |
| Popis: |
A probabilistic risk assessment (PRA) was performed to evaluate the range of potential baseline and postremedy health risks to fish consumers at the Portland Harbor Superfund Site (the "Site"). The analysis focused on risks of consuming fish resident to the Site containing polychlorinated biphenyls (PCBs), given that this exposure scenario and contaminant are the primary basis for US Environmental Protection Agency's (USEPA's) selected remedy per the January 2017 Record of Decision (ROD). The PRA used probability distributions fit to the same data sets used in the deterministic baseline human health risk assessment (BHHRA) as well as recent sediment and fish tissue data to evaluate the range and likelihood of current baseline cancer risks and noncancer hazards for anglers. Areas of elevated PCBs in sediment were identified on the basis of a geospatial evaluation of the surface sediment data, and the ranges of risks and hazards associated with pre- and postremedy conditions were calculated. The analysis showed that less active remediation (targeted to areas with the highest concentrations) compared to the remedial alternative selected by USEPA in the ROD can achieve USEPA's interim risk management benchmarks (cancer risk of 10 |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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