Environmental Health - Toxic Substances Hydrology Program
The Multifunction Bedrock-Aquifer Transportable Testing Tool’s (BAT3) compact and portable design has enabled it to be shipped at reasonable cost to several sites throughout the eastern United States, including sites with contaminated ground water, in order to characterize fractured rock aquifers.
The USGS and the University of Connecticut used a multi-disciplinary, integrated approach to characterize the nature and extent of contamination from a landfill and from former chemical-waste disposal pits at the University of Connecticut (UConn), Storrs, Connecticut. The BAT3 was used to isolate sections of bedrock boreholes, to collect discrete-interval ground-water samples, to identify hydraulic head as a function of depth, and to estimate the permeability of fractures. The data collected with the BAT3 helped to establish, refine, and verify a conceptual model of ground-water flow at the site that explained the distribution of contamination in the bedrock.
The USGS and the North Carolina Department of Environmental and Natural Resources (NCDENR), Division of Water Quality (NCDWQ), are cooperating in an effort to improve the level of understanding of the ground-water system and processes that affect ground-water quality in the Piedmont and Mountains Region of North Carolina. The BAT3 was used to assess the hydraulic properties of fractures in the bedrock and the ability of these fractures to transmit water.
USGS scientists used the BAT3 to characterize the hydraulic properties of fractures in a borehole in an investigation of ground water leaking into a subway tunnel in the Bethesda, Maryland, area. The information from this study is being used to design cost-effective ways to reduce ground-water inflow into subway tunnels.
USGS scientists are conducting a hydrogeologic assessment of water supplies for the Leetown Science Center, West Virginia. The project’s objectives (project update and status as of 11/2004 [pdf]) are twofold—first to assess additional sources of water that could supply the Center’s expanding needs for high-quality water, and second to evaluate methods that can be applied to hydrogeologically similar areas throughout the Nation. The BAT3 was used to evaluate water-bearing fractures in the sedimentary rocks for water quality and yield.
Shapiro, A.M., 2004, Borehole Testing System: Washington, D.C., U.S. Government Patent and Trademark Office, United States Patent 6,761,062.