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theenergynet on 2010-02-08"Officials at a Vermont nuclear plant said Friday they are investigating the possibility that a leak in an underground pipe connected to a sump pit may be responsible for a radioactive substance turning up in groundwater monitoring wells, while new groundwater tests found levels more than 40 times higher than a federal safe drinking water limit.
Vermont Yankee plant officials said they found levels of tritium in a sump pit at the plant that far exceeded those recently found in groundwater monitoring wells. The discovery suggested that an underground pipe connected to the pit might be the source of the leak, and officials said they planned to investigate that possibility over the weekend.
They said the 2.7 million picocuries per liter found in the sump sample was near the maximum that could be reached at the plant; water that passes through the reactor has readings close to 3 million picocuries per liter."