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In the spring of 1997, the Suffolk County Department of Health Services audited the BNL site, and identified the Building 830 Gamma Irradiation Facility (GIF) as an underground tank regulated under Suffolk County Health Code, Article 12. As a result of this audit, a project was initiated to review the GIF and to collect information to develop an options list for its future disposition. The overall objective of this task was to evaluate the decontamination and decommissioning (D&amp;D) of the GIF, including the proper disposal of the cobalt-60 sources currently located in the GIF. This objective was accomplished through the performance of the following subtasks. (1) Characterize the GIF and the cobalt-60 sources: (a) Compile available data on the physical and radiological characteristics of the gamma sources; (b) Conduct underwater surveys to verify visually the physical state of the sources, and if possible, their activity levels (curie content); and (c) Prepare the pool, to the extent possible, for removal of the sources. (2) Identify options for future disposition: (a) Contact other gamma facilities and find out their experiences with recycling, disposal, and D&amp;D; and (b) Contact vendors for the disposal or recycling of the cobalt-60 sources. Identify options and factors affecting them, such as costs, regulatory issues, health and safety requirements, equipment availability. This report summarizes the results of these subtasks. The remainder of this introductory section gives a description of the GIF, provides a brief history of the facility, and discusses the applicable Article 12 requirements. Section 2 focuses on the sources themselves, and the current facility configuration. Contacts with other gamma facilities are summarized in Section 3. Section 4 presents the options developed from these contacts and from BNL experience, and their estimated costs. Costs are tabulated and compared in Section 5, and Section 6 presents conclusions

BUILDING 830 GAMMA IRRADIATION FACILITY EVALUATION OF OPTIONS FOR ITS FUTURE DISPOSITION.