Superfund Record of Decision (EPA Region 8): East Helena, MT. (First remedial action), November 1989

Technical Report · Wed Nov 22 00:00:00 EST 1989

OSTI ID:6749749

The 80-acre East Helena site, in East Helena, Lewis and Clark County, Montana, is a primary lead smelting facility that has been in operation since 1888. Prickly Pear Creek flows near the site and has been found to contain elevated levels of arsenic and lead. A 1984 remedial investigation identified elevated levels of metal contamination in soil, livestock, plants, and ground and surface waters with the sources of onsite contamination being primary and fugitive emissions and seepage from process ponds and process fluid circuitry. The primary contaminants of concern in the process ponds are metals including arsenic and lead. The selected remedial action for this site includes excavating and smelting 55,150 cubic yards of soil and/or sediment from all four process ponds and multi-media monitoring after individual remedial activities are implemented at three of the process pond areas.

• Research Organization: Environmental Protection Agency, Washington, DC (USA). Office of Emergency and Remedial Response
• OSTI ID: 6749749
• Report Number(s): PB-90-220526/XAB; EPA/ROD/R-08-90/027
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
GROUND WATER
CONTAMINATION
MONTANA
POLLUTION
SOILS
SURFACE WATERS
ARSENIC
ECOLOGICAL CONCENTRATION
HAZARDOUS MATERIALS
LAND POLLUTION
LEAD
MONITORING
REMEDIAL ACTION
SITE SURVEYS
SMELTERS
SUPERFUND
WASTE DISPOSAL
WATER POLLUTION
ELEMENTS
FEDERAL REGION VIII
HYDROGEN COMPOUNDS
LAWS
MANAGEMENT
MATERIALS
METALS
NORTH AMERICA
OXYGEN COMPOUNDS
POLLUTION LAWS
SEMIMETALS
USA
WASTE MANAGEMENT
WATER
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
540220 - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)