CHARACTERIZING GROUNDWATER CONTAMINATION AT A HETEROGENOUS FIELD SITE

拟议研究的目标是开发一种能够 被用来描述危险废物的地下水污染 网站。我们特别关注人物形象的设计 能够适应复杂环境条件的工具。该项目 将是由开发的新场地表征方法的扩展 首席调查员和他的同事(Graham和McLaughlin 1989a，b； 格雷厄姆和麦克劳克林在印；李和麦克劳林在印)。这些 方法生成逼真的地下污染物多维地图 通过现场测量和数学模型相结合的方法进行浓缩。 这里提出的项目将扩大以前的工作，包括重要的 过去被忽视的不确定性来源。这些 其他来源包括地下水的空间和时间变异性 补给、吸附和生物降解特性的空间变异性， 以及污染源的位置和大小的不确定性。我们 计划在一个危险的地点测试我们扩展的现场表征程序 阿伯乔纳河流域的垃圾场。所需的数据用于开发 现场自然变化的统计描述将是 作为团队工作的一部分收集，这将涉及到 教授们。格施文德、克鲁姆霍尔茨、格哈尔和赫蒙德。的终极产品 我们的网站表征程序将是一个有效的系统 描述修复前和修复过程中的地下污染。 此过程中使用的计算机算法将可用于 感兴趣的各方和基本概念将在文章中总结 发表在被裁判的文献中。

The objective of the proposed research is to develop a procedure that can be used to characterize groundwater contamination at hazardous waste sites. We are particularly concerned with the design of characterization tools which can adapt to complex environmental conditions. The project will be an extension of new site characterization methods developed by the principal investigator and his coworkers (Graham and McLaughlin 1989a,b; Graham and McLaughlin, in press; Li and McLaughlin, in press). These methods produce realistic multi-dimensional maps of subsurface contaminant concentration by combining field measurements with mathematical models. The project proposed here will expand previous work to include important sources of uncertainty that have been ignored in the past. These additional sources include spatial and temporal variability in groundwater recharge, spatial variability in sorption and biodegradation properties, and uncertainties in the location and size of contaminant sources. We plan to test our extended site characterization procedure at a hazardous waste site in the Aberjona River Basin. The data needed to develop a statistical description of natural variability at the site will be collected as part of a team effort which will involve participation by Profs. Gschwend, Krumholz, Gelhar, and Hemond. The ultimate product of our site characterization procedure will be an efficient system for describing subsurface contamination both before and during remediation. The computer algorithms used in this procedure will be available to interested parties and the basic concepts will be summarized in articles published in the refereed literature.