Superfund Record of Decision (EPA Region 8): Whitewood Creek site, Lawrence, Meade, and Butte Counties, South Dakota (first remedial action), Final report, March 30, 1990

Technical Report · Fri Mar 30 04:00:00 EST 1990

OSTI ID:5546434

The Whitewood Creek site is a mine tailings deposit area near the town of Whitewood in Lawrence, Mead, and Butte counties, South Dakota. From 1877 to 1977, arsenic-rich tailings from gold and ore mining and milling operations, conducted by the Homestake Mining Company, were discharged directly into Whitewood Creek. Residential soil contains arsenic contamination as a result of a building in the tailings area. The selected remedial action for the site includes removing and/or covering frequently used areas with clean surface soil (arsenic <20 mg/kg) in residential areas with arsenic levels above 100 mg/kg followed by disposal of the arsenic-contaminated soil, if approved by EPA, and revegetation of the remediated area; soil sampling at all remediated areas to confirm that arsenic levels are below 100 mg/kg. EPA is invoking ARAR waivers based on the technical impracticability of remediating contaminated ground and surface waters. The estimated present worth cost for the remedial action is $882,813, which includes an annual O and M cost of $12,000 for years 1-5 and $6,000 for years 6-30.

• Research Organization: Environmental Protection Agency, Washington, DC (United States). Office of Emergency and Remedial Response
• OSTI ID: 5546434
• Report Number(s): PB-91-921409/XAB; EPA/ROD/R--08-90/028
• Country of Publication: United States
• Language: English

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29 ENERGY PLANNING, POLICY, AND ECONOMY
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54 ENVIRONMENTAL SCIENCES
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Aquatic-- Chemicals Monitoring &amp; Transport-- (1990-)
ARSENIC
CONTAMINATION
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COST
DEVELOPED COUNTRIES
ECOLOGICAL CONCENTRATION
ELEMENTS
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HAZARDOUS MATERIALS
HYDROGEN COMPOUNDS
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OXYGEN COMPOUNDS
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POLLUTION CONTROL
POLLUTION LAWS
REMEDIAL ACTION
REVEGETATION
SEMIMETALS
SITE SURVEYS
SOILS
SOLID WASTES
SOUTH DAKOTA
STANDARDS
SUPERFUND
SURFACE WATERS
TAILINGS
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WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
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WATER POLLUTION