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Title: Postclosure permit application for Bear Creek Hydrogeologic Regime at the Oak Ridge Y-12 Plant S-3 Site

Technical Report ·
OSTI ID:5787456

The S-3 Site (S-3 pond waste management area) is located adjacent to the west end of the Department of Energy's (DOE) Y-12 Plant in Oak Ridge, Tennessee. The S-3 Site consists of one regulated unit, the S-3 Site Hazardous Waste Disposal Unit (HWDU). The S-3 Site HWDU, along with the Oil Landfarm and the Burial Grounds Waste Management Areas (WMAs), comprise the Bear Creek Valley Waste Disposal Area (BCVWDA). Until the early 1980s, various types of hazardous wastes generated at the Y-12 Plant as part of, or incidental to, main production processes were disposed of in the BCVWDA. Hazardous-waste disposal at the S-3 Site was terminated in 1984. In 1988, the S-3 Site was closed as a landfill in accordance with the requirements of Tennessee Department of Environment and Conservation (TDEC) Rule 1200-1-11-.05(14)(e). In addition to sludges, a small volume of contaminated sediments was removed from Bear Creek and deposited in the ponds prior to capping. As required under the TDEC approved closure plan the sludges and sediments were stabilized with coarse aggregate and covered with a five-part engineered cap of low-permeability material. The S-3 Site has been closed as a hazardous-waste disposal unit and therefore will be subject to post-closure care. The closure plan for the S-3 Site HWDU detailing closure activities is presented in Appendix A.1. A post-closure plan for the S-3 Site is presented in Appendix A.2. The purpose of the post-closure plan is to identify and describe the activities that will be performed during the post-closure care period. This plan will be implemented and will continue throughout the post-closure care period.

Research Organization:
Oak Ridge Y-12 Plant, TN (United States); Geraghty and Miller, Inc., Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE; USDOE, Washington, DC (United States)
DOE Contract Number:
AC05-84OR21400
OSTI ID:
5787456
Report Number(s):
Y/ER/Sub-91-ALV96/1; ON: DE92005402
Country of Publication:
United States
Language:
English