Merrimack River to be tested for PFOA
September 24. 2018 10:57PM
CONCORD — The New Hampshire Department of Environmental Services has requested a dye study on the Merrimack River near the Saint-Gobain Performance Plastics plant.
Weather permitting, consultants for Saint-Gobain will release a red dye Tuesday from a storm water pipe on the west bank of the river for an hour or two, DES said in a news release Monday. DES requested the study as it continues investigating groundwater contaminated with perfluorooctanoic acid (PFOA) near the plant, where Saint-Gobain discovered PFOA in its faucets more than two years ago.
The dye, which may lead to a temporary red hue in areas of the river, is approved by the U.S. Environmental Protection Agency for use in similar applications. The study will evaluate how surface water interacts with water flowing from the storm pipe where the river flows close to the Saint-Gobain facility on the Daniel Webster Highway.
Similar dye studies have been conducted at wastewater treatment facilities in Dover, Portsmouth, Exeter, Newmarket, Hampton, Seabrook, Newfields, and Kittery, Maine, DES said in the release.