Title
A Work in Progress: Silver Bow Creek Remedial Action
Abstract
After 14 years of investigations and studies, the remediation of Silver Bow Creek started in September 1999. With an $80,000,000 settlement from the Atlantic Richfield Company (ARCO), the State of Montana awarded a construction contract for $2.54 million to remediate the first 1.25 miles of the 26 mile long Streamside Tailings Operable Unit downstream of Butte, Montana. By January 2000, the contractor had completed approximately half of the contract. Most of the design elements have been implemented successfully, however some problems have been encountered. As expected in a floodplain, working around water presents the greatest problems. The following aspects of the project have been completed or are under construction: stream diversion and dewatering; tailings/impacted soils removal; a mine waste relocation repository; in-stream sediment removal; non-deformable streambank construction; floodplain reconstruction with associated groundwater dewatering systems; and haul roads.
Start Date
14-4-2000 12:00 AM
End Date
14-4-2000 12:00 AM
Document Type
Poster
A Work in Progress: Silver Bow Creek Remedial Action
After 14 years of investigations and studies, the remediation of Silver Bow Creek started in September 1999. With an $80,000,000 settlement from the Atlantic Richfield Company (ARCO), the State of Montana awarded a construction contract for $2.54 million to remediate the first 1.25 miles of the 26 mile long Streamside Tailings Operable Unit downstream of Butte, Montana. By January 2000, the contractor had completed approximately half of the contract. Most of the design elements have been implemented successfully, however some problems have been encountered. As expected in a floodplain, working around water presents the greatest problems. The following aspects of the project have been completed or are under construction: stream diversion and dewatering; tailings/impacted soils removal; a mine waste relocation repository; in-stream sediment removal; non-deformable streambank construction; floodplain reconstruction with associated groundwater dewatering systems; and haul roads.