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Title: First quarter chemical borehole studies in the drift scale test

The chemistry boreholes of the Drift Scale Test (DST) have been designed to gather geochemical information and assess the impact of thermal perturbations on gas and liquid phases present in pore spaces and fractures within the rock. There are a total of ten boreholes dedicated to these chemical studies. Two arrays of five boreholes each were drilled from the access/observation drift (AOD) in planes which run normal to the heater drift and which are located approximately 15 and 45% of the way along the length of the drift as measured from the bulkhead. The boreholes each have a length of about 40 meters and have been drilled at low angles directed just above or just below the heater plane. In each array, three boreholes are directed at increasingly steeper angles (< 25-) above the line of wing heaters and two are directed at shallow angles below the wing heater plane.
Authors:
Publication Date:
OSTI Identifier:
672320
Report Number(s):
UCRL-ID--131013
ON: DE98057889
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 19 May 1998
Research Org:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org:
USDOE Office of Civilian Radioactive Waste Management, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 54 ENVIRONMENTAL SCIENCES; ROCKS; BOREHOLES; GEOCHEMISTRY; GASES; LIQUIDS; SAMPLING; CHEMICAL ANALYSIS; GROUND WATER