2010 Near Shore Sampling Project

Overview

In August and September 2010, Arconic (formerly Alcoa) collected a number of sediment samples along both shores of the Grasse River from the Alcoa Bridge down to the St. Lawrence River confluence. All samples were collected in the near shore areas of the river, which are areas along the shoreline with less than 5 feet of water where potential exposures to sediment while wading are more likely. The sampling was done to better understand polychlorinated biphenyl (PCB) levels and determine the extent and depth of PCBs in the near shore areas so this information could be used in the development of long-term cleanup alternatives for the river. More than 180 locations were sampled in 2010 from the near shore areas, with more than 1,500 samples collected and submitted for PCB testing.