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U.S. Department of Energy
Office of Scientific and Technical Information

Drilling, piezometer design, and testing specifications for the DC-19, DC-20 and DC-22 borehole clusters and RRL-2B

Technical Report ·
OSTI ID:5235049
The DC-19, DC-20, and DC-22 borehole clusters consist of twelve boreholes (DC-19A, DC-19B (option), DC-19C, DC-19D, DC-20A, DC-20B, DC-20C, DC-20D, DC-22B, DC-22C, and DC-22D). The boreholes will provide information on hydraulic heads in nine horizons in and around the reference repository location. In addition, the boreholes and RRL-2B will be used to perform high-stress tests to determine horizontal and vertical flow rates, to identify possible geologic structures. This specification includes details for the drilling, piezometer design, and testing of the boreholes. It includes the predicted stratigraphy, predicted hydrologic test results, the drilling requirements, design and installation procedures for the A''-, C''-, and D''-Series piezometers, description of tests to be conducted, intervals selected for testing and schedules for drilling and piezometer installation activities. 26 refs., 15 figs., 9 tabs.
Research Organization:
Rockwell International Corp., Richland, WA (USA). Rockwell Hanford Operations
Sponsoring Organization:
DOE/RW
DOE Contract Number:
AC06-77RL01030
OSTI ID:
5235049
Report Number(s):
RHO-BWI-TC-016; ON: TI90004566
Country of Publication:
United States
Language:
English