Superfund Record of Decision (EPA Region 5): New Brighton/Arden Hills, Ramsey County, MN. (Eighth remedial action), September 1992
The 25-square-mile New Brighton/Arden Hills site includes the 4-square-mile. Twin Cities Army Ammunition Plant (TCAAP) in Ramsey County, Minnesota. Land use in the area is predominantly residential with commercial and industrial sectors. In 1981, state investigations of municipal and private drinking water wells in and around TCAAP identified contamination of ground water, onsite soil, sediment, and surface water by VOCs, other organics, and metals. Past removal actions and seven previous RODs, signed from 1983 to 1989, addressed interim remedial actions conducted by the Army and Alliant Techsystems and provided for the establishment of alternate drinking water supplies. The ROD addresses remediation of the south plume of offsite contaminated ground water, as OU3. The primary contaminants of concern affecting the ground water are VOCs, including benzene, TCE, and xylenes; other organics, including phenols; and metals, including chromium and lead. The selected remedial action for the site includes pumping and offsite treatment of contaminated ground water at the leading edge of the south plume using precipitation and filtration to remove inorganic solids and a pressurized granular activated carbon system to remove VOCs; and discharging the treated ground water offsite to the potable water supply.
- Research Organization:
- Environmental Protection Agency, Washington, DC (United States). Office of Emergency and Remedial Response
- OSTI ID:
- 5776692
- Report Number(s):
- PB-93-964131/XAB; EPA/ROD/R-05-92/210
- Country of Publication:
- United States
- Language:
- English
Similar Records
Superfund Record of Decision (EPA Region 5): New Brighton/Arden Hills/TCAAP, Minnesota (third remedial action), September 1987. Final report
Superfund Record of Decision (EPA Region 5): New Brighton/Arden Hills (TCAAP), Twin Cities Army Ammunition Plant, MN. (Seventh remedial action), August 1989
Related Subjects
GROUND WATER
REMEDIAL ACTION
US SUPERFUND
DECISIONS AND ORDERS
ACTIVATED CARBON
AROMATICS
BENZENE
CHROMIUM
COMMERCIAL SECTOR
DRINKING WATER
EXTRACTION
FILTRATION
HAZARDOUS MATERIALS
INDUSTRIAL WASTES
LAND USE
MINNESOTA
PHENOLS
POLLUTION CONTROL
PUMPING
RESIDENTIAL SECTOR
SEDIMENTS
SOILS
TRACE AMOUNTS
US DOD
US EPA
WASTE DISPOSAL
WASTE PROCESSING
WATER SUPPLY
WATER WELLS
XYLENES
ADMINISTRATIVE PROCEDURES
ADSORBENTS
ALKYLATED AROMATICS
CARBON
CONTROL
DEVELOPED COUNTRIES
ELEMENTS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
LAWS
MANAGEMENT
MATERIALS
METALS
NATIONAL ORGANIZATIONS
NONMETALS
NORTH AMERICA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION LAWS
PROCESSING
SEPARATION PROCESSES
TRANSITION ELEMENTS
US ORGANIZATIONS
USA
WASTE MANAGEMENT
WASTES
WATER
WELLS
540250* - Environment
Terrestrial- Site Resource & Use Studies- (1990-)