Superfund Record of Decision (EPA Region 9): Iron Mountain Mine, Shasta County, CA. (Second remedial action), September 1992

Technical Report · Wed Sep 30 00:00:00 EDT 1992

OSTI ID:5976802

The 4,400-acre Iron Mountain Mine (IMM) site is a collection of inactive mines and associated property located on Iron Mountain, Shasta County, California. Land use in the area is predominantly commercial, with a wetlands located within 9 miles from the site. The Sacramento River is a major fishery and source of drinking water for the City of Redding, which is located 9 miles east of the site. IMM contains several inactive underground and open pit mines, numerous waste piles, abandoned mining facilities, and mine drainage treatment facilities. From 1979 to present, several owners, including Rhone-Poulenc Basic Chemicals, mined copper and other metals, such as gold, silver, pyrite, and zinc. In 1894, Mountain Mining Company acquired and began operating the mine. Mining waste generated was dumped into ravines and washed into several creeks, including Boulder and Sacramento. The ROD addresses control of the AMD sources in the Boulder Creek drainage basin from the Richmond and Lawson portals. Two planned RODs will address AMD to Slickrock Creek, sources for Boulder Creek drainage (excluded from the ROD), contaminated ground water, and other sources of contamination. The primary contaminants of concern affecting the sediment, debris and surface water are metals, including lead.

• Research Organization: Environmental Protection Agency, Washington, DC (United States). Office of Emergency and Remedial Response
• OSTI ID: 5976802
• Report Number(s): PB-93-964506/XAB; EPA/ROD/R-09-92/083
• Resource Relation: Other Information: See also PB--87-189999
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
SOILS
REMEDIAL ACTION
US SUPERFUND
DECISIONS AND ORDERS
ACID MINE DRAINAGE
CALIFORNIA
COMMERCIAL SECTOR
COPPER
DRINKING WATER
GOLD
GROUND WATER
IRON
LAND USE
METALS
MINES
OPTIMAL CONTROL
POLLUTION CONTROL
PYRITE
RIVERS
SEDIMENTS
SILVER
SOLID WASTES
SURFACE WATERS
US EPA
WASTE DISPOSAL
WETLANDS
ZINC
ADMINISTRATIVE PROCEDURES
AQUATIC ECOSYSTEMS
CONTROL
DEVELOPED COUNTRIES
ECOSYSTEMS
ELEMENTS
HYDROGEN COMPOUNDS
LAWS
MANAGEMENT
MINERALS
NATIONAL ORGANIZATIONS
NORTH AMERICA
OXYGEN COMPOUNDS
POLLUTION LAWS
STREAMS
SULFIDE MINERALS
TRANSITION ELEMENTS
UNDERGROUND FACILITIES
US ORGANIZATIONS
USA
WASTE MANAGEMENT
WASTES
WATER
540250* - Environment
Terrestrial- Site Resource & Use Studies- (1990-)