POWNAL — The effort to replace the Pownal water system’s PFOA-contaminated well is extending to a site that was not the first choice. The preferred site is on the former Green Mountain Race Track property, but another parcel that had previously been considered an alternative has seen recent test well activity. The site is part of the Pollert’s Farm property and was one of three potential locations that consultants working with the Pownal Fire District 2 board identified in March. According to Tim Raymond, operations and engineering section chief with the state’s Public Drinking Water Program, his office was notified June 26 that a test well would be drilled on the Pollert property, but he had received no further reports. Michael O’Connor, of Unicorn Management Consultants, of Danbury, Connecticut, which is overseeing the well site search, could not be reached Thursday for comment on the test. Unicorn Management was hired in 2016 by American Premier Underwriters of Cincinnati, the company that has assumed environmental liability for the former factory site that the state considers to be the source of perfluorooctanoic acid, or PFOA, contaminating the water system’s well. The current Pownal Fire District 2 well, serving a water system with about 450 customers in the southern areas of…