EPA-96-GA11-03-A081

096

3,930 千元

2007/04/25

2008/04/24

劉瑞華

土污基管會

賴文惠

中興工程顧問股份有限公司

土壤及地下水

健康風險評估、土壤及地下水污染、健康風險評估電腦計算程式

Human Health Risk Assessment, Soil and Groundwater Pollution Remediation Act, Human Health Risk Assessment Tool Kit

王根樹

劉瑞華

karenliu@mail.sinotech.com.tw

本計畫在「檢討增修土壤及地下水污染場址健康風險評估評析方法內容及制度」方面，蒐集提出健康風險評估報告之場址案例資料共4處，針對報告進行分析，並針對個案情形之分析結果加強評析方法及撰寫指引中之說明。所蒐集分析之個案中，主要問題為對於健康風險評估適用範圍及層次性評估認知有待加強，且撰寫格式大多未完全符合環保署之撰寫指引之相關規定。 針對參數資料庫，本計畫則完成美國、英國、歐盟、澳洲與日本等先進國家於健康風險評估參數之建立與更新之方式之蒐集與彙整，分析各國於參數值與資料庫更新上的程序與特色，並作為建立國內參數更新架構之參考。此外，並建構以計算各暴露途徑之「敏感度比」及「風險百分比」的篩選機制，完成對於現有評析方法中之53項參數的更新優先性之篩選，並歸納出最優先進行更新與本土化之參數群，完成優先更新之參數群 (第一類與第二類參數) 共計15項的參數更新工作，其中包含六項地質水文氣候類之參數、八項受體暴露參數及蒸散分率。 本計畫藉由辦理4場次參數研商會，分別針對健康風險評估參數建置、健康風險評估評析方法修訂、暴露途徑刪除原則性規範及健康風險評估後續推動方向進行討論。 在協助更新強化「土壤及地下水污染場址健康風險評估評析方法電腦計算程式」系統服務功能方面，已配合健康風險評估評析方法修正及業務需求，更新電腦計算程式功能，新增程序審查及實體審查之階段記錄功能，配合評析方法新增使用地下水進行室外用途而導致水中關切污染物汽化後吸入之暴露途徑計算功能。 在提出土壤及地下水污染場址健康風險評估追蹤管理及審查機制方面，本計畫蒐集之國內案例與國外相關資料，提出審查機制修正建議，建議視場址污染程度調整健康風險評估報告提送期限。並修正「土壤及地下水污染場址健康風險評估審查參考手冊」之相關章節與內容。而為加強污染場址之管理，本計畫依據目前國內土壤及地下水污染場址健康風險評估執行現況，提出後續污染場址追蹤管理機制建議。 為協助健康風險評估制度之實際推動與執行，本計畫於執行期間亦蒐集相關單位所提出之意見及疑義，並彙整作為建置「疑義釋示或判定資料庫」之素材，並協助進行環保署或地方環保機關所提出之判定疑義，作為疑義研判之參考。

健康風險評估、土壤及地下水污染、健康風險評估電腦計算程式

EPA96GA1103A081.PDF

5MB

[期末報告]公開完整版

2008/10/1 上午 12:00:00

In the aspect of “review and amending the contents and mechanism of assessment and analysis on the human health risk of soil and groundwater polluted sites”, this project analyzed the health risk assessment reports collected from 4 selected polluted sites, and to enhance the assessment and analysis methods, and to prepare the instruction of report writing based on the analysis of findings from the reports of these 4 sites. The main weaknesses found from the case studies on these reference sites were lack of acknowledge about the applicability of the human health risk assessment and assessment tiers, which were needed to be strengthened, and the most of the report’s formats weren’t complied with the relevant guidelines issued by the Environmental Protection Agency. Regarding the parameter database, this project collected and compiled the health risk assessment parameters and their updating methods from United States of America, England, European Union, Australia and Japan, analyzed these parameters, procedures and characteristics for updating the parameter databases, to provide as references to the framework of updating parameter. Besides, a screening mechanism based on the “sensitivity ratio” and “risk percentage” of various exposure pathways was set up to determine the updating priority of 53 parameters in the current risk assessment methods, and to derive the first priority parameter group for updating and localization. This project updated 15 items of the first priority parameter group which included first and second categories of parameters. These 15 items of parameters include 6 items of geological, hydrological and climate parameters, 8 items of exposure factors and the fraction of contaminant volatilised. This project also conducted 4 discussing meetings respectively for the establishment of human health risk assessment parameter, the amendment of human health risk assessment methods, the principled specifications for elimination of exposure pathways, and the direction for promotion human health risk assessment system. Regarding the enhancement of system functions of the human health risk assessment computer program for the soil and groundwater polluted sites, the project cooperated the amendment of risk assessment method and the requirements of the EPA to renewed the computer program’s function, added functions of recording procedural review and substantial review, as well as the additional calculation function of exposure path of breathing the vaporized pollutants from water caused by the “Groundwater Used Outdoor”. For proposing the monitoring, management and review mechanism of human health risk assessment for the soil and groundwater polluted sites, this project collected domestic cases and foreign relevant data, proposed the amendment of reviewing mechanism, and suggested an adjustable deadline for the submitting of health risk assessment report depending on the pollution degree of the site. Besides, the relevant chapters and contents of the “Reference Manual on the Review of Assessment of Health Risk Affected by the Soil and Groundwater Polluted Sites” were amended. In order to enhance the management of polluted sites, this project also provided recommendations on the follow up monitoring and management mechanism of the polluted sites based on the current status on the implementation of human health risk assessment. For the promotion and implementation of human health risk assessment system, this project had collected various opinions and enquiries raised by relevant entities and compiled them into a “Q&A and Evaluation and Judgment Database”, and assisted in making the evaluation and judgment of the enquires for the reference of the EPA and other local environmental protection entities.

Human Health Risk Assessment, Soil and Groundwater Pollution Remediation Act, Human Health Risk Assessment Tool Kit