Dartmouth Tells Neighbors That Rennie Farm Chemical Has Been Found in Stream

Click here for Thursday’s full story.

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A probable carcinogen that leaked from Dartmouth College’s former laboratory dump site in rural Hanover has spread to a nearby stream, according to an email the college sent to neighbors today.

College contractors found levels of the chemical, 1,4-dioxane, at roughly one-sixth the state standard for water quality of 3 parts per billion. The substance is presumed to have run downhill from Rennie Farm, the site off Hanover Center Road where Dartmouth’s medical school in the 1960s and ’70s buried thousands of pounds of lab animals involved in radioactive experiments.

In fall 2015, 1,4-dioxane was found in a family’s private well at twice the state standard. The stream where the chemical appeared earlier this month runs behind the family’s house.

Earlier: The Ghosts of Rennie Farm: Roots of Hanover Site’s Contamination Go Back Decades

Read more coverage of Rennie Farm here.

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Posted online Wednesday at 4:25 p.m. Find a full report in Thursday’s Valley News.