Remediation Status: In groundwater monitoring

Why the technology was selected:
The quantity of impacted souce area soil was too great for traditional dig and haul. The soils would have to be disposed of as hazardous (F-002) and the cost was too high. The site was under development and the impacted area was to be utilized as a parking lot. Since long term active remediation was not an option, this technology was cost effective and would do the most for the down-gradient groundwater quality. To ensure surface stability for the proposed parking lot, dry portland cement was intrduced into the blended area.

Date implemented:
December 3, 2010

Final remediation design:
December 16, 2010

Other technologies used:
Excavation of the top four (4) feet of soil and containerization in roll off boxes. Subsequent characterization of the soils using the "Contained In Policy" determined that 352 tons was listed hazardous and 49 tons was listed as non-hazardous. In-situ Soil Blending of the remaing area to a depth of 4-12 feet using Potassium Permanganate as the chemical oxidant.

Results to date:
99% reduction in source area soils 98% reduction in source area gw

Next Steps:
Monitor the down-gradient wells for groundwater quality and plume stability.

Cost to Design and Implement:
$522,437 for all technologies

Why the technology was selected:
The quantity of impacted souce area soil was too great for traditional dig and haul. The soils would have to be disposed of as hazardous (F-002) and the cost was too high. The site was under development and the impacted area was to be utilized as a parking lot. Since long term active remediation was not an option, this technology was cost effective and would do the most for the down-gradient groundwater quality. To ensure surface stability for the proposed parking lot, dry portland cement was intrduced into the blended area.

Date implemented:
December 3, 2010

Final remediation design:
December 16, 2010

Other technologies used:
Excavation of the top four (4) feet of soil and containerization in roll off boxes. Subsequent characterization of the soils using the "Contained In Policy" determined that 352 tons was listed hazardous and 49 tons was listed as non-hazardous. In-situ Soil Blending of the remaing area to a depth of 4-12 feet using Potassium Permanganate as the chemical oxidant.

Results to date:
99% reduction in source area soils 98% reduction in source area gw

Next Steps:
Monitor the down-gradient wells for groundwater quality and plume stability.

Cost to Design and Implement:
$522,437 for all technologies