Radiological survey results indicated a potential leak of tank waste from a transfer system in the C Tank Farm in the 200 East Area.
Officials said 80-percent of the waste has been retrieved and transferred from a single shell to double shell tank. That leaves a few inches of "difficult-to-retrieve" waste.
As a precaution, C Tank personnel were evacuated and others were ordered to shelter in place. Four employees were taken to Kadlec Medical Center as a precaution. Officials said the employees were released and allowed to return to work.
The low-level alert was terminated around 5:00 a.m. and employees were notified to report to work as normal.
Barricades remain in place around the C Tank Farm as workers return to normal operations.
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