The Bennington Banner reports (http://bit.ly/2nrxV83) the site, one of three visited during a preliminary inspection last week, is north of the former Green Mountain Race Trace well and south of the current district well head. PFOA, or perfluorooctanoic acid, was detected in the water system's well a year ago, prompting installation of a filter system to lower the contamination level and a search for an alternative water source.