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Former Burn Dump Closure: Truckee, CA
WEST conducted the investigations, conducted human and ecological risk assessments, prepared the Removal Action Work Plan (RAW), designed the Title 27 compliant cap, provided remediation oversight and certification for remediation of the 2.1-acre former Truckee Regional Park Burn Dump to address metals and dioxin exposure to the public and the environment. WEST also obtained funding for the cleanup through the California Integrated Waste Management Board (CIWMB). The remediation was implemented between May 4 and September 15, 2009 with oversight from the Department of Toxic Substances Control (DTSC), California Regional Water Quality Control Board, California Integrated Waste Management and Nevada County Department of Environmental Health. The site was remediated to return the former burn dump area to parkland.
Removal activities included consolidation and compaction of approximately 5,000 cubic yards of soil and burn dump waste material from 2.1 acres to 1.1 acres. The consolidated materials were covered with a multi-layered cap consisting of: a foundation layer; leveling layer; geosynthetic clay liner (GCL); drainage layer; and vegetative or mechanically erosion resistant layer. Drainage ditches and storm water retention ponds were also built to minimize erosion of the cap.
WEST provided oversight of the community relations and permit applications, prepared work notification fact sheets, developed and provided oversight of the RAW implementation and implemented the Sampling and Analysis Plan. Air monitoring plans were also developed and implemented for the protection of workers and the community.
A land-use restriction for non-irrigated open space of the capped portion of the Site was recorded as a Land Use Covenant (LUC). An Operations, Maintenance and Monitoring Plan (OM&M Plan) and Operations and Maintenance Agreement (OMA) were prepared to detail the post-closure inspection, maintenance, reporting and record keeping procedures for maintaining the integrity of the cap and drainage structures.