Land-Based Remediation Activities

Project Details

With oversight from the New York State Department of Environmental Conservation, Arconic (formerly Alcoa) cleaned up 18 sites at its West plant between 1991 and 2001 in order to control the discharge of hazardous substances off-site, particularly to the Grasse River. These projects included:

    Spent Potlining Pile I
  • 32,000 cubic yards of material remediated.
  • Activities included installation of a RCRA cap and leachate collection and groundwater extraction systems.
    Secure Landfill
  • 495,800 cubic yards of material remediated.
  • Activities included construction of a RCRA/TSCA-type hazardous waste landfill.
    Landfill Annex and West Marsh
  • 198,000 cubic yards of material remediated.
  • Activities included installation of a containment slurry wall, RCRA cap and leachate collection system.
    General Refuse Landfill and East Marsh
  • 673,000 cubic yards of material remediated.
  • Activities included installation of a RCRA cap, groundwater control trench and leachate collection system.
    Spent Potlining Pile A
  • 112,500 cubic yards of material remediated.
  • Activities included installation of a groundwater extraction system.
    Oily Waste Landfill
  • 20,340 cubic yards of material remediated.
  • Activities included backfilling and capping.
    Dennison Cross Road Site
  • 65,840 cubic yards of material remediated.
  • Activities included backfilling and capping.
    Primary Lagoon and Dredge Spoils Area
  • 49,300 cubic yards of material remediated.
  • Activities included excavation, disposal and capping.
    Sanitary Lagoon
  • 36,010 cubic yards of material remediated.
  • Activities included excavation, disposal and cover.
    Storage Tank 51
  • 1,020 cubic yards of material remediated.
  • Activities included backfilling an underground tank.
    Waste Lubricating Oil Lagoon
  • 34,300 cubic yards of material remediated.
  • Activities included excavation, disposal and capping.
    HPM Press Area
  • 2,430 cubic yards of material remediated.
  • Activities included excavation and disposal.
    Unnamed Tributary
  • 10,650 cubic yards of material remediated.
  • Activities included excavation and disposal of material, cleaning and sliplining of pipe.
    60-Acre Lagoon
  • 164,700 cubic yards of material remediated.
  • Activities included excavation and disposal, installation of a clay liner and construction of drainage swales.
    Soluble Oil Lagoon
  • 78,600 cubic yards of material remediated.
  • Activities included excavation, disposal and capping.
    Plant Roads
  • 3.7 miles of unpaved plant roads remediated.
  • Activities included excavation and disposal of contaminated soils and placement of asphalt caps and clean soil covers.
    Wetlands Mitigation Project
  • Approximately 100 acres of wetlands were converted to upland areas during remediation.