BENNINGTON, Vt. (AP) — Scientists at a Vermont college say they've discovered PFOA miles away from private wells that were contaminated by the suspected carcinogen.

Vermont Public Radio reports Bennington College scientists found that PFOA was widespread in Green Mountain National Forest. Professor David Bond believes airborne emissions are responsible for the elevated levels.

PFAO was used at the now-closed Chemfab Corp. factory in North Bennington that's now owned by Saint-Gobain. About 270 private wells are contaminated with the chemical which has been linked to cancer and other illnesses

Saint-Gobain agreed to pay $20 million to extend municipal water lines to about 200 homes in the Bennington area.

Bond says he hopes the study shows the scale of the problem.

A Saint-Gobain spokeswoman said in a statement that the company hadn't reviewed the report.

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Information from: WVPS-FM, http://www.vpr.net