Remedial Action and LNAPL Treatment, Former Tongue Point Naval Base Landfill, OR
|OTIE performed a CERCLA landfill closure involving POL and PCBs at the former Naval base in OR under a FFP TO with performance-based milestones. Tasks included preparing design/value engineering documents, performing remedial action, and performing operation and maintenance. We responded to the short, rainy construction season by scheduling and sequencing multiple operations for 54 independent remedial action CLINs for work and cost control, while protecting the uniquely sensitive environment.
The site was an uncontrolled landfill for multiple wastes in an inter-tidal area on a peninsula in the Columbia River. We coordinated with the Oregon Department of Environmental Quality (ODEQ) and obtained permits from NOAA Fisheries Department for “in-water” work that impacted habitat.
The remedial action objective was to prevent PCB-bearing LNAPL leachate seeps from entering the Columbia River. Specific tasks executed included:
|Client Name: USACE Seattle District
Location: Former Tongue Point Naval Base, OR
Contract Value: $6.2M