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Area 5 Removal
Drums containing hazardous waste were buried in the part of the site known as Area 5. Those drums, and their contents, were removed from the site in a project that began in November 1998 and was completed in July 2001. All of the drummed waste was transported and disposed at an off-site hazardous waste disposal facility.
- Area 5 Drum excavation totals, November 2002 ( About PDF 1pg, 39K)
- Area 5 Pollution Report #17 and Final, February 2002 ( About PDF 7pp, 132K)
Click on any photo to see a larger image.
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If you're interested in the technical details of this project, please continue:
- From November 1998 through July 2001, a removal action involving the
removal of subsurface hazardous waste drums and drum carcasses, drummed
contents, and industrial waste was completed. The work was conducted
pursuant to an EPA AOC signed by the VRAC, and dated September 10, 1998.
- A total of 26,986 subsurface drums were removed by VRAC contractors
from the 82 50- by 50-foot grids, identified as removal action areas
based on geophysical anomalies.
- Drums containing hazardous waste solids (containing combinations of
polychlorinated biphenyls [PCB], ignitable waste, sulfides, and/or Toxicity
Characteristic Leaching Procedure [TCLP] trichloroethylene [TCE], vinyl
chloride, lead, tetrachloroethylene [PCE], benzene, methyl ethyl ketone
[MEK], and heptachlor epoxide) accounted for 67 percent of the total
drums removed in Area 5.
- In addition, drums defined by the Resource Conservation and Recovery
Act (RCRA) as RCRA empty drums totaled approximately 33 percent.
- Drums containing any measurable liquids (containing combinations of
flammable liquids, PCBs, and/or TCLP TCE, vinyl chloride, PCE, benzene,
MEK, arsenic, barium, cadmium, chromium, and lead) accounted for less
than 3 percent of the total drums (totaling approximately 6,700 gallons
collected).
- Liquid waste from an underground storage tank and rinse water used
to aid pumping drummed liquids accounted for 2,845 gallons and approximately
4,500 gallons, respectively.
- Excavation, stockpiling, and sampling of all nondrummed material was
conducted throughout the Area 5 removal to characterize the material
and determine the appropriate disposition. Material below RCRA and Toxic
Substances Control Act (TSCA) regulatory limits was backfilled. TCLP
volatile organic compound (VOC)-impacted material was maintained on
site (pending on-site treatment) and other TCLP-impacted soil and debris
was sent for off-site disposal. An estimated 40,000 cubic yards of TCLP
VOC-impacted soil and debris (greater than TCLP regulatory limits for
TCE and PCE) were stockpiled on site and were resampled for VE treatment
or backfilling.
- A summary of waste disposed in Area 5 includes approximately 10,131
tons of RCRA waste (ie TCLP and ignitable waste from drums and soil/debris),
3,315 tons of a combination of RCRA and TSCA waste (ie TCLP and PCB
waste from drums and soil/debris), 16 tons of TSCA solidified sludge
(from drum bulking operations), 139,631 gallons of RCRA liquid (from
water that accumulated on stockpile pads and from drums), and 500 gallons
of RCRA/TSCA liquid (from excavated drums).
- All waste was transported for off-site hazardous waste disposal.