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首页> 外文会议>NATO Advanced Research Workshop on Assessment and Management of Environmental Risks: Methods and Applications in Eastern European and Developing Countries Oct 1-4, 2000, Lisbon, Portugal >STREAMLINING THE RISK ASSESSMENT PROCESS: INTEGRATION OF GENERIC CRITERIA AND SITE-SPECIFIC RISK ASSESSMENT
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STREAMLINING THE RISK ASSESSMENT PROCESS: INTEGRATION OF GENERIC CRITERIA AND SITE-SPECIFIC RISK ASSESSMENT

机译：简化风险评估流程：通用标准和特定地点风险评估的整合

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摘要

The Canadian government applies a tiered approach to assessing and remediating the risk at contaminated sites. This merges the strengths of national guidelines, site-specific objectives, and site-specific risk assessment in a tiered framework intended to achieve both economically and environmentally feasible decisions. The tiers of this framework include Canadian Soil Quality Guidelines that are developed for four categories of land use based on defined exposure scenarios that are protective of both human health and the environment. Where these exposure scenarios are not feasible for a site, guidance is provided on setting site-specific objectives that takes into account variations in receptors and exposure through the modification of the soil quality guideline. Where -such objectives are not appropriate due to several triggering factors, including uncertainty, a full site-specific risk assessment is conducted to set remediation goals. This risk assessment is itself tiered, and driven largely by uncertainty in the estimate of risk. In this paper we present the generic framework plus recent work on applying this tiered framework to the remediation of petroleum contaminated sites.
机译：加拿大政府采用分级方法来评估和补救受污染场地的风险。这将国家指南，针对特定地点的目标以及针对特定地点的风险评估的优势融合在旨在实现经济和环境可行决策的分层框架中。该框架的各层包括《加拿大土壤质量指南》，该指南针对四类土地利用，根据既定的暴露场景进行了开发，以保护人类健康和环境。如果这些暴露场景对于某个站点不可行，则将提供针对确定特定站点目标的指南，该目标应考虑到通过修改土壤质量指南而改变受体和暴露的情况。如果由于多个触发因素（包括不确定性）而导致此类目标不合适，则将进行针对特定场所的完整风险评估以设定补救目标。此风险评估本身是分层的，并且在很大程度上由风险估计的不确定性驱动。在本文中，我们介绍了通用框架以及将这种分层框架应用于石油污染场地修复的最新工作。

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