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Failure of 307 basin transfer line and resultant ground contamination

Description: A leak of apparently long duration was discovered on December 9, 1965, in the transfer line from the 307 retention basins to the 340 contaminated waste system during the transfer of liquid from one of the 307 basins. This line was designed to carry only mildly-contaminated retention system waste. However, the uncovered line suggests that, over a period of time, the bottom half of the carbon steel transition section between the transfer line and the 340 contaminated waste system was corroded out. This permitted the highly contaminated waste to percolate into the soil beneath the missing pipe section. Since neither the duration of leakage nor the exact origin or nature of the contaminants were known, this study was undertaken to: (1) estimate the amount of radioactivity released; (2) document its location with respect to the 340 Area and to the underlying groundwater; and (3) investigate its potential environmental impact. Soil samples were collected to determine the approximate location and quantity of each of the radionuclides which had leaked to the soil. One-digit accuracy was deemed sufficient to decide what, if any, action would be required. The findings from the several exploratory holes drilled at and adjacent to the site of the corroded transfer line are reported. (auth)
Date: January 1, 1970
Creator: Denham, D.H.
Partner: UNT Libraries Government Documents Department

241-T-106 tank leak investigation

Description: On June S, 1973, the 241-T-106 underground liquid waste storage tank, located on the U. S. Atomic Energy Commission's Hanford reservation, was confirmed as leaking. It was predicted that the leaked waste would be retained by the dry sediments well above the water table. A study was instigated to confirm this prediction. Results show the deepest penetration observed was 27 meters below the ground surface or 35 meters above the water table (approximately S7 and 116 feet, respectively). Based on these results and the basic knowledge of liquid movement in Hanford sediments, further movement of the radioactivity from its present location will be negligible. (auth)
Date: November 1, 1973
Partner: UNT Libraries Government Documents Department

Evaluation of waste disposal by shale fracturing

Description: The shale fracturing process is evaluated as a means for permanent disposal of radioactive intermediate level liquid waste generated at the Oak Ridge National Laboratory. The estimated capital operating and development costs of a proposed disposal facility are compared with equivalent estimated costs for alternative methods of waste fixation.
Date: February 1, 1976
Creator: Weeren, H.O.
Partner: UNT Libraries Government Documents Department