The 1100 Area became the first Hanford area to be removed from the National Priorities List in 1995 when cleanup was completed. It had no disposal locations for radioactive or mixed wastes, but contained several sites for hazardous wastes including batteries and battery acid containing lead, sulphuric acid, and ethylene glycol, or antifreeze. Over 10,900 metric tons (12,000 tons) of waste was removed from the old Horseshoe landfill near Rattlesnake Mountain and disposed of at ERDF.
Five Year Review:
Record of Decision (ROD) abstract:
Hanford Superfund Site Homepage
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