Document Details

Extracted pages from Y/TS-1630 "Compilation of Correspondence Pertaining to Use of Mercury at Y-12: Significant Documents 12/96 L.L. McCauley
Subject Terms:
flasks, Y-12, mercury; plant effluents, sediment
Document Location:
DOE INFORMATION CENTER 1 Way, Oak Ridge, TN 37831; Eva Butler; Phone: 865-241-4780; Toll-Free: 800-382-6938, Option 6; FAX: 865-574-3521; Email:
Document Categories:
Health, Safety and Environment\Waste Management; Health, Safety and Environment\Waste Management
Document Type:
Declassification Date:
1997 Feb 27
Declassification Status:
Document Pages:
Accession Number:
Document Number(s):
Originating Research Org.:
Oak Ridge Y-12 Plant
OpenNet Entry Date:
1998 Jun 16
This internal correspondence dated November 26, 1984, was a confirmation of the approach and priorities taken to fulfill the purpose of the project, Reduction of Mercury in Plant Effluents. The mercury in East Fork Poplar Creek comes from many non-process sources and it was recognized that total elimination of mercury discharges may not be possible. The major mercury sources that needed to be addressed were the mercury and mercury-contaminated sediments in the storm sewer system located in the "mercury use area"; mercury leaving Buildings 9204-4 and 9201-5 and possibly 9201-4, entering the storm sewer system; and mercury contamination of soils around leaking storm sewer lines. The general approach agreed upon to fulfill the purpose of the project was to remove mercury and mercury contaminated sediments that can be carried into East Fork Poplar Creek (EFPC) to the extent practical, to isolate other sources of mercury contamination (not readily removable) that could enter the storm drain system, and collect and treat residual mercury-contaminated water sources after the first two approaches were completed. The fiscal year 1985 priorities were (1) to remove the mercury-contaminated sediments in the storm sewer system, (2) concentrate the isolation efforts in Building 9204-4 first because it was the largest contributor to mercury in EFPC, (3) develop clean conduits for Building 9201-5 and 9201-4, and (4) technically define, evaluate, and prioritize other approaches identified so remaining project funds can be utilized for subprojects that have the best potential for fulfilling the purpose of this project. Mercury sample results collected from East Fork Poplar Creek and Bear Creek, and the method used for analysis were included. Another memo dated April 13, 1965, is included concerning the physical and accounting controls over mercury at Y-12 with a summary and detail of their findings. All mercury material was located in the Western Exclusion Area, except the recovery facility which is within the perimeter fence; anyone cleared had unlimited access to the Western Exclusion Area; the flask storage was accessible by sedans, high-lifts or pick-up trucks; received two explanations of the method used to determine number of flasks filled on each shift; periodic gate checking of lunchboxes, briefcases, and packages were confined to the day shift only and outgoing vehicles were examined only if the guard was suspsicious; and shipment data was available to many people within and outside Carbide. They were also advised that the Stores Department did not identify the pallet or flask numbers on shipments to customers which was important for accountability and tracing, and defeated the purpose of numerical controls. This situation was addressed and records were documented to provide those controls.

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