Preliminary Site Survey Report for the Former Elza Gate Warehouse Area, Oak Ridge, Tennessee.

摘要

In the early 1940s, the operations of the Manhattan Engineer District (MED) in support of the war effort included the importation and refining of foreign uranium ore. The radium-bearing sludges that resulted from the refining process were stored in warehouses in Oak Ridge, Tennessee, while awaiting further disposition. Later on, other radioactive materials such as tailings, oxide residues, and slag were also stored in the five warehouses. Following the removal of the stored materials to other facilities, the Atomic Energy Commission's Y-12 Plant in Oak Ridge used the warehouses for a period of time before the site was decontaminated and released for unrestricted use under criteria current at that time. However, because guidelines for use of such sites have become more stringent since previous cleanups, and because it is the policy of DOE to verify that such sites are in compliance with current guidelines, a radiological survey was conducted on parcels 1--4 of the property by members of the Measurement Applications and Development Group of Oak Ridge National Laboratory in March 1989. Survey results show that widespread residual radioactivity from former operations remains on the property, primarily in outdoor soil and as surface contamination on three of the original concrete pads, one of which is inside the present building. Residuals are in excess of the DOE's criteria for cleanup under the Formerly Utilized Sites Remedial Action Program. Since results also indicate that spillover contamination to parcels 5--9 on the property is probable, further surveying of these areas may be appropriate. 4 refs., 7 figs., 9 tabs.