khắc phục hậu quả Quyết định Phân tích chính sách tốt nhận ra rằng chân lý vật lý có thể được biết đến kém hoặc không đầy đủ. Mục tiêu của nó là để đánh giá, trình tự, và cấu trúc kiến thức không đầy đủ để cho phép các quyết định được thực hiện hoàn chỉnh một sự hiểu biết có thể có của hiện trạng kiến thức, giới hạn của nó, và ý nghĩa. -Granger Morgan (1978) khắc phục là tồi tệ hơn so với căn bệnh này. -Francis Bacon, Ngày Seditions Sau khi khắc phục hậu quả CERCLA điều. | 9 Remedial Decisions Good policy analysis recognizes that physical truth may be poorly or incompletely known. Its objective is to evaluate order and structure incomplete knowledge so as to allow decisions to be made with as complete an understanding as possible of the current state of knowledge its limitations and implications. Granger Morgan 1978 The remedy is worse than the disease. Francis Bacon On Seditions Following the CERCLA remedial investigation the feasibility study FS is conducted to analyze the benefits . risk reduction costs and risks associated with remedial alternatives. The use of ecological risk assessment should not end with the baseline risk assessment for the site or even with the recommendation of remedial goal options in the remedial investigation Chapter 8 . Risk assessment is integral to 1 the analysis of individual remedial alternatives 2 the ultimate balanced remedial decision for the site 3 prioritization of the remediation sequence for multiple sites and 4 the assessment of the efficacy of remediation. The baseline assessment in the RI addresses only the no-action alternative. This chapter addresses the use of ecological risk assessment in the FS and in the subsequent decisionmaking process. In remedial alternative analysis the following questions should be asked 1 How will present and future risks associated with contaminants be mitigated by each alternative 2 What new risks may be associated with each alternative The first question can be answered based on the baseline risk characterization remedial goals and the proposed remedial alternatives. No new risk assessment is necessary. The analysis required to answer the second question fully should often be a complete risk assessment problem formulation exposure assessment effects assessment risk characterization and description of uncertainties. Stressors most often physical are new and some assessment endpoints and exposure pathways are likely to be different from those in the .
