Saint Regis Mohawk Tribe
Environment Division
For The Next Seven Generations
Air Quality Program
Brownfields
Compliance
Environmental Assessments
Env. Education Outreach
Forestry
Green Building Project
Hazardous Materials
Information Systems
I R M P
M E R C
N R D A
Solid Waste Management
St. Lawrence River AOC
Superfund
Water Resource Program
Wetlands Protection
Acid Rain - NADP
Ambient Air
Benzene Program
Climate Change
Fluoride Vegetation
Indoor Air
In-House
Metals
Ozone
PAH
PM 10 & 2.5
SO2 & Nox
TIP
Video
Wind
Clouds
The Atmosphere
Pollution Types and Sources
Particulate Matter
Sulfur Oxides
History of Clean Air Act
Carbon Monoxide
H. Indoor Air in Mohawk Homes
Radon - What Are Our Risks
Radon Update
Styrene Air Monitoring
Veg. Injury Causedr by Fluoride
PAH
 
Public Record
Area 1
Area 2
Area 3
Area 4
About Us
Forms
Current Projects
Public Comments
Pesticides 
Env. Edu. 2002 
IEN Newsletter 2002-2006
Response Team
Petroleum Bulk Storage
GIS
IT
Maps
Projects
Equipment & Software
Services
2015 Price List
Discontinuity Planning
Kwis & Tiio
Recycling
Services Provided
SW Management Resources
Waste Lamp Recycling
Life Without Trash Removal
BUI
Sturgeon Restoration
Mussel Restoration
Ethnobotany
St.Regis River
Grasse River
Alcoa East
Alcoa West
General Motors
 
Proposed Record of Decision: Minerals Processing Plant
by Dave Arquette

The two acre parcel, located next to General Motors Powertrain Division (GM) is a list Class 2 site in the New York State Registry of Inactive Hazardous Waste Disposal Sites. In May 1995, GM entered into an order of consent with the New York State Department of Environmental Conservation (NYSDEC) requiring the removal and containment of PCB contaminated waste found at the site. Additionally, a focused remedial investigation was conducted to evaluate soils and groundwater that may have been impacted at this site.

Remedial Investigation (RI)
  • PCB levels up to 500 ppm were found in the dismantling bins inside the main building.
  • PCB levels up to 150 ppm were found in the soils of the equipment storage area outside the building.
  • PCB levels up to 50 ppm were found in miscellaneous soils around the site.
  • Groundwater is contaminated with volatile organic carbons (VOCs) and semi-VOCs.

A complete evaluation of the remedial investigation and remedial action is found in the Interim Measure Report dated January 1996.

Remedial Action
  • All materials above 10 ppm were containerized and taken off site for disposal.
  • All soils below 10 ppm of PCBs will be capped with a 12 inch protective cover.
  • Building was deconned and dismantled and taken off site for disposal.
  • Concrete pad was deconned and will remain in place, be covered with a 12 inch cap.
  • Installed three monitoring wells to study the groundwater.

The NYSDEC Proposal includes the following:

  • Reclassify the site from a Class 2 to a Class 4 on the New York State Registry of Inactive Hazardous Waste Disposal Sites. A Class 4 site is defined as a site which has been properly closed and requires continued management.
  • Monitoring and maintenance of the low level PCB contaminated soils beneath the protective cap and monitoring the site's groundwater to insure the site is properly closed and maintained in order to protect human health and the environment. The costs incurred during remediation of this site are approximately $350,000 and the annual maintenance and monitoring is estimated to be $7,000.

The St. Regis Mohawk Tribe's Response to NYSDEC Proposed Record of Decision for the Minerals Processing Site:

  • The SRMT recommends a clean up level of 1 ppm for soils. The SRMT standard clean up level for PCBs in soils is 1 ppm and should be implemented at this site.
  • Drainage ditches leading to Mohawk Lands and to the Raquette River need to be characterized better.
  • Stormwater runoff needs to be collected and treated.