"D" Tanks Removal Completed



The Waste Concentration Facility, Bldg. 811, was the main liquid radioactive waste storage and processing facility at BNL. The facility received low-level liquid radioactive waste from the Brookhaven Graphite Research Reactor, the Hot Laboratory Complex, Building 801, and the High Flux Beam Reactor. The waste was temporarily stored and eventually distilled to remove particulates, and suspended and dissolved solids.

Documented spills and leaks occurred at the facility in 1982, 1985, and 1987. They resulted in soil and groundwater contamination. The primary radionuclides of concern in soils are Cesium-137 and Strontium-90. Strontium-90 was found in the groundwater.

The facility contained three 100,00 gallon capacity aboveground D-waste tanks - Tanks D-1, D-2 and D-3 - that were used to store liquid waste from 1949 to 1987. In addition to the above ground tanks, six 8,000-gallon stainless steel underground storage tanks (USTs) were located 50 feet north of Building 811. The six USTs were used to store class A and B radioactive wastes. Two 5,000-gallon above ground tanks, known as the blending tanks, were located on a pad adjacent to the USTs. The blending tanks were removed in October 1994 and the six 8,000 gallon USTs were removed in 2004.

Description of Removal Action

Under Removal Action I and further documented in the Operable Unit I Record of Decision, the three aboveground D-tanks were dismantled and removed in 1995. The contaminated concrete pads for the D-tanks were covered with an additional temporary asphalt layer in 1998 to prevent runoff and leaching of contaminants. The groundwater is being treated for the removal of Strontium-90 down gradient from the facility.

Documents / Links

OU I Record of Decision