US Department of Energy says chemical vapors in tank farms don't approach federal limits


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RICHLAND, Washington — The U.S. Department of Energy says monitors worn by Hanford tanks workers have found no samples with chemicals close to the federal limit for occupational exposure.

Since spring, 44 Hanford workers have received medical evaluations for possible exposure to chemical vapors from the waste held in Hanford's underground tanks.

The Tri-City Herald reports Friday that all have been cleared to return to work.

The Energy Department says an analysis of 3,200 samples collected by monitors worn by workers found just 19 that showed chemicals present at more than 1 percent of the occupational exposure limit. There were no samples collected with chemicals at more than 50 percent of the federall exposure limit.

The Energy Department said it remains committed to a conservative response to chemical vapors and to protecting workers.

Information from: Tri-City Herald,

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