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Looking down the gravel ramp at a truck being loaded at the DARA Solids Storage Facility at Bear Creek Burial Grounds.

Under contract to the DOE Oak Ridge Environmental Management office, LATA removed, transported, and disposed of the Disposal Area Remedial Action (DARA) soils, debris, and liner materials from the DARA Solids Storage Facility (SSF), Building 9720-60, at the Bear Creek Burial Grounds in the Y-12 National Security Complex on the U.S. Department of Energy Oak Ridge Reservation.

The DARA soils and debris consisted of two identified waste streams. Work Performed:

  1. Waste Stream #1 consisted of approximately 4000 cubic yards of soil and approximately 50 cubic yards of miscellaneous debris associated with the placement of the soil following closure of the Oil Retention Ponds at the Bear Creek Burial Grounds

   2. Waste Stream #2 consisted of approximately 21 cubic           yards of soil along the south wall of the SSF

       The SSF is a walled and covered facility with:

  • A concrete base measuring approximately 171 feet by 76 feet (14,000 sq. ft)

  • A dual impermeable synthetic membrane liner separated by a liquid collection system

  • An approximately 10 feet deep waste pile (non-radioactive, clear of pesticides, but still contaminated with PCBs)

  • A steel mesh equipment access ramp (covered with approximately 50 cubic yards of debris)

 

A gravel ramp was built at one end of the building. The dump trucks used this ramp to enter and exit the building so they could be loaded with soil and debris by the excavators. The existing steel mesh ramp was utilized as well for equipment movement.

4,578 cubic yards (11,055,240lb) of soil and debris were removed from the site. Most of the soil and debris from SSF was sent to the Environmental Management Waste Management Facility. Some soil was sent on to the Nevada Nuclear Security Site.

The beginnings of the gravel ramp used by trucks to enter and

exit the building.

Once full of soil and debris, the truck beds were covered in preparation for the drive to the landfill.

progression photos of the soil and debris removal (click to enlarge)

DISPOSAL AREA REMEDIAL ACTION SOILS

Oak Ridge, Tennessee

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