L-31N Seepage Management Pilot

The objectives of this data acquisition project were to provide the on-site geologic expertise while the four coreholes and the deepest well in each cluster are drilled and constructed, and to complete the downhole geophysical logging including video and flow meter logging of these boreholes. The USGS on-site geologist provided technical guidance to the drill crew, described the lithology of the core and unconsolidated sediments, and stored the cores and sediment samples for the duration of the project. USGS staff provided and ran gamma ray, fluid conductivity and temperature, EM-induction, 3-arm caliper, full wave form sonic tools, a heat-pulse flow meter, an OBI-40 Mark III digital optical tool, and the Laval video tool.