Winston-Thomas
The Winston Thomas site is a former wastewater treatment plant that includes a contaminated lagoon and other waste treatment and disposal units.
Tertiary Lagoon: CBS Corporation, formerly Westinghouse Electric Corporation, is continuing its cleanup of the Winston Thomas Wastewater Treatment Plant. Cleanup activities are still on schedule for completion by September 1999. Most of the sludge in the tertiary lagoon has been removed and only the contaminated areas of the south berm need to be excavated. The bottom of the lagoon has been cleaned up of PCBs to extremely low or undetectable levels - so low that regulations would even allow residential development in the area. As of the end of June, about 45,000 tons of material contaminated with more than 50 parts per million (ppm) PCBs has been sent off site to a specially permitted landfill. In addition about 700 tons of PCB-contaminated material containing less than 50 ppm was sent to a second permitted landfill. As a reference, the average semi-dump truck holds between10 and 15 tons of material.
Additional contaminated areas surrounding the lagoon must also be cleaned up.
Other Units: Various other units at the Winston Thomas site have already been cleaned up. In 1998, CBS Corporation cleaned 24,000 tons of stone in the trickling filter by washing the rock to remove any PCB particles. After the filter stones were cleaned, the filter structure and piping were then cleaned of PCBs. In 1997, 6,400 tons of sludge was removed from the sludge digesters and disposed of in a permitted landfill. The digesters were then cleaned to industrial standards. With the exception of the tertiary lagoon, where cleanup is ongoing, all of the former abandoned lagoons have been cleaned to industrial PCB standards: about 11,000 tons of PCB-contaminated lagoon material has been disposed of in a permitted landfill. In addition, at the former sludge drying beds, about 5,000 tons of material containing more than 50 ppm PCBs and 2,500 tons of material containing less than 50 ppm PCBs was excavated and disposed of in a permitted landfill.
General
- Over 194 Million Pounds of PCB Contaminated Material Excavated and Removed Off-site
- CBS Preparing Final Report for Tertialry Lagoon
- CBS Preparing Groundwater Monitoring Plan
- Over 10,000 Samples Analyzed
- EPA Preparing Historical Sampling Report
Tertiary Lagoon
- Excavation and Shipment of Material Completed
- Final Site Preparation Underway
- Cleanup Under Criteria in SOW
- TSCA Filter Calke to EQ Landfill - 25,880.78 Tons
- TSCA Soils From Lagoon to EQ Landfill - 19,727.92 Tons
- TSCA Soils to EQ from Outfall 6! - 167.76 Tons
- Non _TSCA Soils to Southside from Lagoo - 708.87 Tons
- TSCA Soils From South Berm ot EQ Landfill - 11,080.40 Tons
- Total Gallons Water Treated fthe Discharged to Sewer - 48,023,780
- Total Gallons Pumpe Direct to Sewer - 2, 998,480
- Air Monitoring Well Under Action Level
Abandoned Lagoons
- TSCA Materials Shpped to EQ Landfill - 9,450 Tons
- Water Treated amd Doscjarged tp Sewer - 81,000
Trickling Filter
- Stone Processed - 23, 851 Tons
- Debris and Soil Fremoved as Non-TSCA - 1020.55 Tons
- Water Treated and Discharged to Sewer - 363, 000 Gallons
- Piping Removed as TSCA Wasted - 108.58 Tons
Sludge Drying Beds
- TSCA Material Removed - 5,148 Tons
- Non-TSCA Material Removed - 2,468 Tons
- Piping System Cleand and Removed
Sludge Digesters
- TSCA Material Removed - 6,378 Tons
- Piping System Cleansed and Removed
Miscellaneous
- West Side of Clear Creek - 8,968 Tons TSCA Material Removed
- Interim Storage Facility - 9,923 TSCA Material Removed
- East Side of Entrance Road - 450 Tons TSCA Material Removed
Neal's Landfill
CBS Corporation is also continuing its cleanup of Neal's Landfill.Cleanup activities in the north slope area are complete. About 1,000 PCB-containing capacitors have been excavated and trucked to a permitted incinerator in Texas. In addition, about 23,000 tires excavated from the north slope area will be shredded on site and placed under the final landfill cap. As of June 30, about 5,000 tons of soil containing more than 500 ppm PCBs have been excavated from the north slope the north excavation. The PCB-contaminated soil has been shipped off site for disposal. The remaining material from the excavated areas has been consolidated for final placement under the landfill cap. The north slope area has been cleaned upto meet strict residential PCB standards.
The final cap design for Neal's Landfill is being evaluated. The current schedule calls for work on the final cap to begin Spring 2000, but if the schedule allows, work may begin this year.
- Catagory A and B Excavations and Shpment Off-site Completed
- Catagory C Excavations and Consolidation Completed
- 38,000 Tons PCB Contaminated Material Shipped Off-site to EQ
- 450,000 Pounds capacitors Shipped to Chemwaste
- 95% Final Cap design Submittal Reviewed
- Final Cap Construction Begins August 30, 1999
- Grid Sampling in Southeast
- Qualifying Borrow Area
- Air Monitoring Still Below Action Level
- Residential Well Sampling at 14 Locations Completed
- Anderson Spring Sampled
- Analyzed for PCBs and VOCs
- Non-Detect for both PCBs and VOCs
- Split Sampling for PCBs and Dioxin
Bennett's Dump
- Contractor Selected by CBS - WRS
- Mobilizations Completed
- Excavation Started
- Sediment Removal in Stout's Creek
Lemon Lane/ICC Springs
PCBs from the Lemon Lane Landfill are released from the Illinois Central Spring (ICS), located about 0.5 mile from the site. During normal flow, only low levels of PCBs are released from ICS, which is the headwaters of Clear Creek. During heavy rainfall, much higher concentrations of PCBs are released asPCBs are flushed out of the karst terrain.
EPA is constructing a 1,000-gallon-per-minute water interim
treatment plant, with an additional 1.3 million gallons of water
storage. The treatment plant is located on City of Bloomington
property near Third and Adams streets. The $5 million plant is
scheduled to begin operating Spring 2000. The plant will be
operated by the Indiana Department of Environmental
Management. During Summer and Fall 1999, site preparation
and the constr uction of the treatment building will be completed. During Winter and Spring 2000, the treatment and the contruction of the treatment building will be completed During Winter and Spring 2000, the treatment equipment will be installed and tested. The interim water treatment plant will capture at least 80 percent of PCBs released from ICS. After the remedy for the Lemon Lane Landfill is completed and information is available from other investigations, the interim water treatment plant will be evaluated to determine final water treatment requirements.
- Plant Construction Continues
- Pouring Foundations
- On Schedule for Spring Startup
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