NEW APPROACHES FOR THE PHYSICAL CHARACTERIZATION OF WETLAND DEPOSITS/WELLS G+H

描述：本提案重点介绍了导致人类 从市政泵送的饮用水接触有毒化学物质 1964至1979年间在沃本的G井和H井。它的目标是 了解有毒金属在湿地中的迁移和去向 存款并为未来站点提供更高效的方法 调查。拟议的研究将测量场地地层学。 和阿伯乔纳河之间沉积物的水力传导性 以及G井和H井。剖面将在垂直尺度上开发。 分辨率与沉积比例兼容，方法是使用 测量轴摩擦力、点阻力和贯入度的压电锥 稳定渗透过程中的孔压。的物理属性 湿地沉积物将通过实验室测试确定其特征 未受干扰的土壤样本。这些数据是数值模式所必需的 用于解释渗透率测量结果，提供参考值 在特定地点，有助于理解 泥炭和高度可压缩有机粘土的特性。组合在一起 将利用现场和实验室研究来制定新的 层状材料中渗透过程的解释方法。

Description: This proposal focuses on the processes leading to human exposure to toxic chemicals via drinking water pumped from municipal Wells G and H in Woburn between 1964 and 1979. It is aimed at understanding the transport and fate of toxic metals through wetland deposits and providing a more efficient methodology for future site investigation. The proposed research will measure the site stratigraphy and hydraulic conductivity of the deposits between the Aberjona River and Well G and H. The profiles will be developed at a vertical scale resolution which is compatible with the scale of deposition by using the piezocone which measures shaft friction, point resistance and penetration pore pressure during steady penetration. The physical properties of the wetland deposits will be characterized using laboratory testing on undisturbed soil samples. These data are required for numerical models used to interpret the penetration measurements, provide reference values at specific locations and contribute to the understanding of the behavior of peats and highly compressible organic clays. The combination of the field and laboratory studies will be used to formulate new methods of interpretation for penetration processes in layered materials.