SUBSURFACE TRANSPORT AND FATE OF CADMIUM, ARSENIC AND LEAD

这个项目的目标是评估地下空间的重要性 沉积物中金属迁移的物理和化学不均一性 地质上复杂的材料。该项目将包括(1) 土壤、沉积物和土壤的矿物学和化学取样与分析 地下水-从北部一个或多个环保局超级基金地点获得的地下水 As、Cd、Ni和/或Pb达到或超过EPA作用的新英格兰- 水运性能的实验室和现场测试 所选矿点未固结矿床的数量(S)；(3) 现场和实验室数据的地质统计分析；和(4) 非反应性和非反应性有机物形态和迁移的数值模拟 非均质地质材料中的活性成分。这 研究将允许更好地预测地下运输和 金属在对人类有毒的浓度下的命运。

The objective of this project is to evaluate the importance of subsurface physical and chemical heterogeneity on the transport of metals in geologically complex materials. The project will include (1) mineralogical and chemical sampling and analyses of soils, sediment, and ground-water obtained from one or more EPA superfund sites in northern New England at which As, Cd, Ni, and/or Pb are at or above EPA action- level; (2) laboratory and field testing of hydraulic transport properties of unconsolidated deposits at the chosen field site(s); (3) geostatistical analyses of the field and laboratory data; and (4) numerical simulation of the speciation and transport of nonreactive and reactive constituents in heterogeneous geological materials. This research will allow for better prediction of the subsurface transport and fate of metals at concentrations toxic to humans.