ORNL tank to go out

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 URS | CH2M Oak Ridge (UCOR) is in the midst of offsite shipments of soils excavated from around an underground waste tank at Oak Ridge National Laboratory.

This removal action is being performed under the Comprehensive Environmental Response Compensation and Liability Act and will eliminate a known source of contaminants being released to the groundwater.

The action includes excavation of Tank W-1A and 355 cubic yards of soil and associated secondary waste. The soils are being packaged in lead-lined boxes and shipped off site for disposal.

Tank W-1A was commissioned in 1951 to collect and store liquid wastes from radiochemical separations and high-radiation analytical facilities. During its operation, a transfer line was suspected of leaking near the tank intake, causing significant soil and groundwater contamination. It was emptied and removed from service in 1986.

The 7.5-foot-diameter-by-13.5-foot-long 4,000-gallon stainless-steel tank was installed horizontally on top of a concrete foundation pad with two concrete saddles. It weighs 6,500 pounds and is buried about 10 feet below ground surface.

Once removed, the tank will be packaged and shipped to a commercial facility at the East Tennessee Technology Park for size reduction and repackaging, then shipped off site for disposal.