Brownfields – Manufacturing Facility, Decommissioning, Decontamination and PCB Impacted Soil Removal

SCS Engineers was selected for environmental remediation engineering, construction facility decommissioning and demolition management, and as the general contractor to manage and execute a demolition, decommissioning, and PCB impacted soil removal for a former 2.7-acre transformer manufacturing facility in Redwood City, California. During the mid-1960s to early 1970s, liquid polychlorinated biphenyls (PCBs) were used to manufacture electrical transformers by the previous owner of the site. Significant spills were reported.

The first phase of the project, decommissioning and demolition, included the demolition of the building structures and disposal to a TSCA landfill. The second construction phase included design plans and specifications for PCB impacted soil excavation, including shoring, followed by backfill and site restoration. The major tasks that SCS performed during the second phase included:

  • Engineering Plans and Specifications
  • Permitting with USEPA, county, water board and city
  • Install shoring
  • Excavation of over 14,000 tons of PCB impacted soil
  • Engineered Cap over two areas
  • TSCA waste load, transportation and disposal Management
  • Storm drainage improvements
  • Import fill placement and compaction
  • Hydroseeding for site restoration