2.1.1 Current Activities
- A Modification to the site Action Memorandum was signed on September 22, 2015. The Action Memorandum was modified to allow soils with PCB concentrations up to 25 mg/kg to be left in place at depths greater that 24 inches. If PCBs are left on site at depths below 24 inches at concentrations greater than 1 mg/kg, orange safety fence will be laid down atop the excavated area prior to backfilling with clean fill to provide a visible barrier. The OSC will coordinate with the property owner, State, and local agencies to implement post removal site controls.
- Site personnel mobilized back to the site on October 14, 2015 to resume site activities. Site operations were suspended longer than anticipated to allow time for ERRS to arrange disposal of stockpiled soils and for the Action Memorandum modification to be finalized. Upon arrival, ERRS conducted site maintenance activities such as checking/replacing silt fence and oiling equipment.
- ERRS began transporting soil off site for disposal. On 10/15/15 and 10/16/15 a total of nine truckloads (approximately315,412 kg) of PCB contaminated soil was transported off site for disposal at Wayne Disposal Waste Treatment in Belleville, Michigan. Prior to shipment, the OSC confirmed with the EPA Region 5 Off Site Contact that there are no regulatory compliance issues at the facility.
- START conducted air monitoring for particulates. No action levels were exceeded.
- ERRS recovered one capacitor from site soil. A total of 10 capacitors and 1 pole mount capacitor have been found to date and are being stored on site in drums pending disposal.
- Results for confirmation samples were received for samples collected in excavated areas in the southeast corner of the Walp Trucking property. Samples collected in 3 out of 6 areas exceeded a concentration of 25 mg/kg and will require additional excavation.
- ERRS began excavating an additional 6 to 10 inches of soil from one of the previously excavated areas where soil samples exceeded 25 mg/kg.
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