ASARCO Smelter Remedial Action Oversight, Tacoma and Ruston, WA

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CH2M Hill for the U.S. Environmental Protection Agency, Region 10

White Shield assisted CH2M-Hill and EPA with oversight of the remedial action taken by ASARCO
under CERCLA at the main ASARCO facility and smelter site north of Tacoma, and at Ruston, WA.
The actions included the replacement of arseni contaminated surface soils in adjacent areas. The work was monitored for compliance with the Record of Decision, the approved remedial design, and
other documents relating to the project. The activities included excavation of contaminated materials, placement of contaminated materials in the on-site containment facility (OCF), demolition of on-site structures, site grading, drainage and capping, and review of related PRP documents. Air monitoring was also provided during remedial action activities.

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