Superfund Record of Decision (EPA Region 8): Central City/Clear Creek, Colorado (first remedial action), September 1987. Final report

Technical Report · Wed Sep 30 04:00:00 EDT 1987

OSTI ID:6903237

The focus is on five abandoned mines/tunnels proximal to the cities of Idaho Springs, Black Hawk, and Central City and the influence of acid mine drainage from those tunnels on adjacent stream courses. Surface-water contamination results from acid-mine drainage emanating from the five tunnels and from seepage of ground water through tailings piles both proximal to these tunnels and along stream courses. Approximately 1200 lbs per day of dissolved and suspended metals are discharged to the Clear Creek drainage from the five mine tunnels. These dissolved and suspended metal loadings have resulted in a significant depletion of aquatic life and have potential impact to sediments and downstream users of surface and ground water. There are ten contaminants of concern including aluminum, arsenic, cadmium, chromium, copper, fluoride, lead, manganese, nickel, silver and zinc. Interim remedies are described.

• Research Organization: Environmental Protection Agency, Washington, DC (USA)
• OSTI ID: 6903237
• Report Number(s): PB-88-220983/XAB; EPA/ROD/R-08-87/016
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING, POLICY, AND ECONOMY
290300 -- Energy Planning & Policy-- Environment
Health
& Safety
520600* -- Environment
Aquatic-- Regulations -- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID MINE DRAINAGE
AQUATIC ORGANISMS
CONTROL
DOCUMENT TYPES
ELEMENTS
FLUORIDES
FLUORINE COMPOUNDS
GROUND WATER
HALIDES
HALOGEN COMPOUNDS
HAZARDOUS MATERIALS
HYDROGEN COMPOUNDS
LAWS
MAPS
MATERIALS
METALS
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION LAWS
PROGRESS REPORT
RECOMMENDATIONS
REMEDIAL ACTION
SEDIMENTS
SUPERFUND
SURFACE WATERS
WATER
WATER POLLUTION CONTROL