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1995 Non-Time Critical Removal Action


In June to October in 1995, Alcoa performed a Non-Time Critical Removal Action (NTCRA) in which their goal was to remove PCB contaminated sediments near and around Outfall 001. The secondary goal was to investigate and gather site-specific information for future activities. The sediments that were dredged were then dewatered and then stored in Alcoa´s secure on-site landfill. NTCRA removed about 2,600 cubic yards of sediments and about 400 cubic yards of debris. Some of the information gathered from the 1995 NTCRA showed that abundant debris on the river bottom negatively affected the progression rate of dredging and related activities. Also, silt curtains were not as effective as hoped in containing re-suspended solids during dredging activities.

  1. Alcoa. June 2012. Analysis of Alternatives Update. Pp. 35-37.
  2. Blasland, Bouck, and Lee. December 1995. Non-Time Critical Removal Action Documentation Report. http://environmental-comm.info/alcoadev1/pdf/NTCRA_Rpt_Exec_Summary.pdf
  3. "1995 Non-Time Critical Removal Action."    http://environmental-comm.info/alcoadev1/ntcra_es.html
Saint Regis Mohawk Tribe Environment Division - Posted: 2012.08.06
http://www.srmtenv.org/index.php?spec=sf_alcoa_w1995ntcra