Demolition and removed of 350 tons of hazardous PCB impacted concrete.
Excavation and management of 815 tons of hazardous PCB soil
Management of impacted groundwater
Backfilling of excavation area
Restoration of the site
This site was a former manufacturing facility located in Sidney, NY, and required removal of PCB impacts associated with the sites former use.
The site was comprised of an approximately 250,000 square foot concret slab that was the former manufacturing building footprint. PCB containing lubricating oils were used in select processes at two locations within the building. The concrete slab and subsurface soils below these areas required removal and restoration. The site was intended to be used as a solar farm, and remediation and restoration was required before the solar farm could be completed.
The PCB impacts that required removal were isolated to two areas. One area was designated to be managed as nonhazardous waste that required concrete slab removal only. The other area was determined to be hazardous waste, which required the concrete and several feet of subsurface soils to be removed from the site.
SES saw cut the concrete around the perimeter of each impacted area. The concrete was demolished into manageable pieces utilizing a hydraulic breaker on an excavator. The concrete was then stockpiled within the footprint in preparation for loading. Finally, the concrete was loaded into permitted vehilcles and transported off-site via nonhazardous and hazardous waste manifests to the approved designated facility.
The soils below the concrete were then sampled for PCB impacts. One area required no additional excavation and was approved for restoration. The other area required additional excavation and confirmatory testing.
The soils in this area were removed in two-foot increments, live loaded into trucks and transported off-site via a hazardous waste manifest for disposal. The final excavation depth in this area reached six feet below the concrete.
Groundwater entered the excavation and required management into a storage tank. The water int he tank was determined to be a nonhazardous waste and was transported off-site for disposal via a waste manifest. Clean store was imported and placed into the excavation in one-foot lifts that were compacted with a remote vibratory plate tamper. Once the backfilling activities were completed, SES restored the concrete slab removed during the remedial activities.