Hazardous wastes have contaminated soils, river sediments, groundwater, and plant and animal life with toxic chemicals, including polychlorinated biphenyls (PCBs) and metals. There have been many activities leading to improvements in water quality in the AOC since 1987, including remediation of hazardous waste sites and contaminated sediments, and source control activities. Francis and spans across the provinces of Ontario, Quebec in Canada, and Mohawk Council of Akwesasne Mohawk Territory. Lawrence River at Cornwall AOC extends from the Moses-Saunders Power Dam to the eastern outlet of Lake St. Regis River from the mouth upstream to the bridge at New York state Route 37 in Akwesasne, N.Y. It also includes the Raquette River from the mouth upstream to the bridge at New York state Route 420, and the St.

Lawrence River upstream of the Canadian boundary to the Massena public water supply intake, and the Grasse River from the mouth upstream to the breached dam in the village of Massena. Lawrence River at Massena/Akwesasne AOC includes the New York state waters of the St. Lawrence River Area of Concern (AOC) is a bi-national AOC shared between the United States, New York state and the Saint Regis Mohawk Tribe (SRMT). EPA announces grant to enhance mussel populations in New York’s lower Grasse River.Healthy Mussels, Healthy River- Saint Regis Mohawk Tribe mussel propagation.Department of Environmental Conservation EC and Saint Regis Mohawk Tribe Announce First-Ever State-Tribal Partnership for Area of Concern on U.S.

Dredging mussels from great lakes