Author(s)

M Zakikhani, D W Harrelson, J C Pennington, J M Brannon, M K Corcoran & J Clark

Abstract

As part of the natural attenuation study and long- term monitoring of explosives, new types of direct push technologies (DPT) that allow direct detection of contamination, without bringing soil or water samples to the surface for analysis, have been developed in recent years. The DPT has been used to provide data to a multi-objective project conducted at two contaminated sites. The DPT also provided samples for microbiological studies and stratigraphic analysis of Iithologies for the numerical modeling effort. The main objective of the modeling work was to assist field monitoring and data collection for a better demonstration and graphic representation of natural attenuation of explosives. The study has shown that the DPT is an effective tool for sampling both soil and water in varying geologic environments of deposition. DPT technology provided a cost-effective means of providing real-time data concerning the stratigraphy, resistivity and ground water contamination of the sites. The ground water modeling system (GMS) was used to simulate flow and mass transport of contaminants of concern (TNT, RDX) at the sites. Modeling runs for LAAP indicated that the TNT and RDX plumes are static and possibly slowly diminishing

Keywords