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

Interpretation of hydraulic tests conducted in the waste-handling shaft at the Waste Isolation Pilot Plant (WIPP) site

Technical Report ·
OSTI ID:6987020
A series of sub-horizontal boreholes from 8- to 41-feet deep were drilled from four depth levels in the waste-handling shaft at the Waste Isolation Pilot Plant (WIPP) site in southeastern New Mexico. The boreholes were drilled at the 782- and 805-foot depth levels in a mudstone and a claystone of the unnamed lower member of the upper Rustler Formation; at the 850-foot depth level in bedded halite in the upper Salado Formation; and at the 1350-foot depth level in halite, anhydrite, and polyhalite of the Salado Formation. Examination of the cores recovered from one borehole at each level indicated no direct evidence of construction-induced fracturing. Pulse-injection test were conducted in packer-isolated intervals in six of the boreholes to estimate the formations's hydraulic conductivity and apparent formation pressure, and to determine whether or not there was evidence of construction-enhanced permeability up to one shaft diameter from the shaft wall. 12 ref., 67 figs., 19 tabs.
Research Organization:
Sandia National Labs., Albuquerque, NM (USA); Intera Technologies, Inc., Austin, TX (USA)
DOE Contract Number:
AC04-76DP00789
OSTI ID:
6987020
Report Number(s):
SAND-88-7001; ON: DE88014193
Country of Publication:
United States
Language:
English