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in subjects: "Testing"

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Effects of Introduced Materials in the Drift Scale Test

Water samples previously acquired from superheated (>140 C) zones within hydrological test boreholes of the Drift Scale Test (DST) show relatively high fluoride concentrations (5-66 ppm) and low pH (3.1-3.5) values. In these high temperature regions of the rock, water is present superheated vapor only--liquid water for sampling purposes is obtained during the sampling process by cooling. Based on data collected to date, it is evident that the source of the fluoride and low pH is from introdu… more

Date: January 11, 2002

Creator: DeLoach, L & Jones, RL

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

The Brookhaven National Laboratory Perfluorocarbon Tracer Technology: A Proven and Cost Effective Method to Verify Integrity and Monitor Long Term Performance of Walls, Floors, Caps, and Cover Systems.

Currently, containment system failures are detected by monitoring wells downstream of the waste site. Clearly this approach is inefficient, as the contaminants will have migrated from the disposal area before they are detected. Methods that indicate early cover failure (prior to contaminant release) or predict impending cover failure are needed. The Brookhaven National Laboratory (BNL) Perfluorocarbon Tracer (PFT) technology can measure performance changes and integrity losses as the cover ages… more

Date: March 11, 2002

Creator: Heiser, J. & Sullivan, T.