Analysis of proposed post-closure alternatives for the Bear Creek Burial Grounds.

摘要

This report assesses the risks to human health and the environment posed by the Bear Creek Burial Grounds under three remedial alternatives proposed under the Closure and Post Closure Activities Project. Chapters 3, 4, and 5 present background material on the geology and hydrology of the Burial Grounds, waste disposal practices at the Burial Grounds and data on the present extent of contamination. Chapter 6 discusses the rationale for selecting the contaminants posing the greatest risks to health and the environment. The risk posed by this group of contaminants is then assessed quantitatively. Proposed remedial alternatives for the site are described in Chapter 7. Chapter 8 evaluates migration and persistence of contaminants under each of the remedial alternatives. An assessment of the risk to human health posed by the site is presented in Chapter 9, and an assessment of ecological risk is presented in Chapter 10. Chapter 11 presents a summary of the findings of this study and makes recommendations for further action. Appendixes A and B discuss the details of groundwater modeling and surface water calculations. 60 refs., 81 figs., 32 tabs.