Fluor served as a subcontractor to support LSRS efforts for removal and disposal activities on the Bethel Valley project.
The SWSA No.1 burial ground was closed under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). SWSA No. 1 was a source of contaminant release to groundwater in Bethel Valley at the Oak Ridge National Laboratory Site. The closure design consisted of placing a low permeability, multi-layer hydrologic isolation cap over waste areas to minimize generation of contaminated ground water from waste.
Additionally, soil covers were installed at the Former Waste Pile Area (FWPA) and Nonradioactive Wastewater Treatment Plant (NRWTP) Debris Pile.
Additional scope included the removal and disposal of hot-spot contaminated soil and the closure of SWSA No. 3 in accordance with CERCLA requirements. This closure included placing a Resource Conservation and Recovery Act (RCRA)-type cap over SWSA No. 3, the adjacent closed scrap metal area and soil contamination areas; installing a low permeability, multiple layer hydrologic isolation cap up-gradient from the waste areas; and constructing up-gradient surface water ditches and French drains to divert clean surface waters and shallow groundwater away from waste. The installation of a soil cover at the contractor's landfill in accordance with CERCLA requirements was included.