The St Clair Shores PCB Drain Site is located in St Clair Shores, Michigan. The site encompasses a several block area where polychlorinated biphenyls have been documented to be present in significant quantities in an underground utility corridor. The PCBs constitute a potential threat to the environment. The storm sewer is approximately 15 feet underground. The PCBs are migrating into the storm sewer which empties into two canals connected to Lake St Clair.
US EPA has initiated a time-critical removal action to trap the PBCs in place and to also remove PCB-contaminated soils from several surface locations identified by the Michigan Department of Environmental Quality.
See Polrep 1 for further details.
• On Sunday, June 25th, 2006, no site work occurred.
• On Monday, June 26th through Wednesday, June 28th 2006, removal of PCB contaminated surface soils and confirmation sampling for surface soil continued. Backfilling of previously excavated areas with clean soil continued.
• On Thursday, June 29th 2006, disposal of PCB contaminated soils to an approved landfill (Carlton Farms) was initiated. Approximately 180 tons of soils were transported off site for disposal.
• On Friday, June 30th 2006, disposal of PCB contaminated soils at an off-site disposal facility continued. Backfilling of excavation areas continued.
• On Saturday, July 1st 2006, excavation activities continued. Excavation activities are near completion.
• On Sunday, July 2nd 2006, no site work occurred.
• EPA will complete excavation of PCB contaminated surface soils
• EPA will continue to stage the PCB contaminated soil at 19600 Pleasant Road, St. Clair Shores, MI. A staging pad was built in this area to eliminate any risk or run-off or cross-contamination from the staged soil.
• During the sewer cleaning, EPA will dewater and jet-vacuum isolated sections of the sewer prior to commencing CIPP work.
• After the sewer cleaning activities are complete EPA will install CIPP in the sewer. The subcontractor for this work will pre- and post-video the pipe and also conduct all appropriate tests on the installed material.
• Jet Grouting will take place in three pre-determined areas around the sewer pipe to trap the PCB contamination in place. Each area will be grouted to a depth of 30 feet starting from the bottom and extending to the surface.
• Continue to backfill all excavation areas and re-seed those areas.
• Dispose of staged PCB-contaminated soil.
• Excavation activities are anticipated to be complete next week.
• Install CIPP.
• Document remaining issues once this time-critical removal is complete.
• EPA is excavating surface soil contaminated with PCB only in residential and public access areas.
• PCBs on the property of an operational business were documented by MDEQ. MDEQ has issued the business a Due Care letter to control the contamination.
• ***** ERRS costs below include awaits for CIPP installation and other costs.****** Additional dollars to complete site work are anticipated above what has been allocated, but within the Action Memo budget.
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