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A diagram of the BAT3 in a bedrock borehole with borehole packers inflated to seal against the borehole wall. The length of the test interval is adjusted by adding additional sections of pipe between the fluid-injection apparatus and the bottom packer. The BAT3 is lowered or raised in the borehole using steel pipe or a cable attached above the transducer shrouds
A diagram of the BAT3 in a bedrock borehole with borehole packers inflated to seal against the borehole wall. The length of the test interval is adjusted by adding additional sections of pipe between the fluid-injection apparatus and the bottom packer. The BAT3 is lowered or raised in the borehole using steel pipe or a cable attached above the transducer shrouds -- from the BAT3 Photo Gallery/afs/.usgs.gov/www/toxics/htdocs/photo_gallery/benthic_flux.html -- from the Benthic Flux of Dissolved Metals Photo Gallery

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The Toxics Program supports the development of knowledge and methods for the collection, analysis, and interpretation of data related to fundamental questions about contamination in the hydrologic cycle. What is the significance of these activities in relation to the field investigations?

Microbial Geochemistry

Geochemistry

Hydrology

Contaminant Geophysics

Modeling

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