LAWRENCE LIVERMORE NATIONAL LABORATORY: SITE 300
SITE CHARACTERISTICS

Remediation Actions Implemented To Date

Significant progress has been made in implementing cleanup remedies at Site 300 that includes:

• 17 treatment facilities that are in place and operating to remove contamination from the subsurface.
  
  
• Capping and closure of four landfills, six HE lagoons and one HE burn pit.
  
  
• Removal and/or closure of numerous dry wells throughout the site.
  
  
• Removal of contaminated soil from source areas.
  
  
• Installation of monitoring networks to track plume migration and remediation progress.
  
  
• Removal of contaminated gravel from high explosive firing tables.

Accomplishments

Ground water extraction and treatment in the eastern GSA has reduced the length of the TCE plume that formally extended almost a mile offsite.

VOC concentrations have been significantly reduced in the central GSA, and Buildings 834 and 832 source areas through simultaneous ground water and soil vapor extraction.

The tritium plume at Building 850 with activities over drinking water standards (20,000 pCi/L) has steadily decreased indicating that tritium is naturally attenuating.

In addition, natural attenuation has reduced TCE concentrations in ground water at the Pit 6 Landfill OU to near or below drinking water standards (5 ppb).




Next: Cleanup Strategy and Phases