Indian Point is the only working nuclear plant of 104 in the country that is leaking strontium 90, a known carcinogen.
Company officials and federal regulators have been watching perimeter wells closely to ensure that the radioactive isotopes were not migrating into other off-site water sources.
Donald Mayer, Indian Point’s top official for the groundwater contamination work, said the well where the strontium 90 was found is uphill from the site, which increases the likelihood that the strontium didn’t migrate from the plant.
The most recent test results show strontium levels that are 0.473 picocuries per liter, less than one-sixteenth of the federal limit of 8.0 picocuries per liter for drinking water. A picocurie is a measure of radioactivity.
Last year’s sample was about twice this year’s, company officials said. Mayer estimated that background levels at the plant would be 1.0 picocurie per liter.
NRC officials said another sample turned up levels about twice as high last year, but those results were considered to be a false positive.
Entergy officials believe the sample showed the traces of strontium 90 because the most recent tests were conducted with a more sensitive analysis, not because of increased levels of radioactivity.
NRC officials said they were fast-tracking a portion of the sample that they took during the test, to check the results as quickly as possible.
The reaction from around the region was mixed yesterday, with two opponents of the plant concerned that there was a second sign of strontium 90 off-site, regardless of the levels.
“If this is the second time, then the problem may be more pervasive than we think,” said C.J. Miller, spokeswoman for Rockland County Executive C. Scott Vanderhoef. “A thorough investigation needs to be done. This is just further proof that a facility of this kind does not belong in such a densely populated area.”
Filed under: enivornment, nuclear, Shundahai Network Blog | Tagged: found, in well, near nuke plant, Strontium 90 | 1 Comment »