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Examples of Where the Multifunction Bedrock-Aquifer Transportable Testing Tool (BAT3) Technology Has Been Applied

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.

University of Connecticut Landfill

USGS scientists under an awning collecting water samples with the BAT3
USGS scientists collecting water samples from bedrock fractures with the BAT3 at the University of Connecticut Landfill Study Area, Storrs, Connecticut.

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.

Lake Wheeler Road Research Site, North Carolina

Scientists attaching the lower packer to the BAT3
USGS and North Carolina Division of Environmental and Natural Resources scientists attaching the lower packer (fluid injection shroud and pump shroud are visible) to the BAT3 at the Lake Wheeler Road Research Site, North Carolina.

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.

Washington Metropolitan Area Transit Authority, District of Columbia

USGS scientists using the BAT3. A truck with borehole hoist is in the background
USGS scientists using the BAT3 to test fractures in bedrock that are potentially responsible for the problematic discharge of ground water into a subway tunnel, Medical Center Station, Bethesda, Maryland. The tunnel is part of the Washington Metropolitan Area Transit Authority's subway system.

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.

Leetown Science Center, West Virginia

USGS scientists preparing the BAT3 to be lowered into a bedrock well
USGS scientists preparing the BAT3 to be lowered into a bedrock well to test fractures at the USGS's Leetown Science Center, West Virginia.

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.

More Information on the BAT3

More Information on Fractured Rock Hydrology

Reference

Shapiro, A.M., 2004, Borehole Testing System: Washington, D.C., U.S. Government Patent and Trademark Office, United States Patent 6,761,062.

 

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