United States Environmental Protection Agency
Region V
POLLUTION REPORT

Subject: 

See Initial POLREP.

Since the last reporting period, ERRS has halted prepping and sealing activities on the PCB impacted floor of building 1014, with an estimated two hours of work left until completion of the second epoxy coat. Excavation of the interior of the test trench and associated oil intrusion investigation activities continue in building 924. To date, ERRS has encountered oil-saturated soils and oil-containing pipes in this area during the investigation. Excavation south of building 912 has been halted until the sealing of the building 1014 concrete floor and the excavation at of the oil infiltration area of building 924 is complete.

Planned removal activities include the following:

•    Surgical soil excavation for investigation of the subsurface oil intrusion source at building 924;
•    City of Chicago demolition of remaining buildings;
•    Continued surgical soil excavation in areas of concern as identified by the subsurface soil assessment, and;
•    Completion of sealing the PCB impacted floor at building 1024.

The following actions are anticipated to occur during the next reporting periods:

•    Reassess buildings for structural integrity;
•     Further investigation and excavation of the interior of the test trench area in building 924 to determine the oil intrusion source into the basement, vaults, and pits;
•    Waste profiling to ensure proper disposal, and;
•    Completion of the sealing activities on the building 1014 concrete floor.

•    Documentation and photo-documentation of all EPA and city work,
•    Address contaminants of concern throughout the site based on findings from the subsurface investigation, and;
•    Tracking of excavation and disposal quantities, including soil and water.