Project Status

Construction of a Toxic Substances Control Act (TSCA) Cell (Vault) to contain PCB materials exceeding 50 milligrams per kilogram (mg/kg) PCB excavated from areas at the plant.
Construction of a multi-layer RCRA engineered cover system over the approximately 40-acre eastern portion of the site (East Plant Area) after removal of accessible greater than 50 mg/kg PCB soils and placement of less than 50 mg/kg materials from the off-site Bailey’s Branch/Pleasant Run removal action to prevent water infiltration into underlying residual PCB impacted soils and bedrock.
Construction of a multi-layer RCRA engineered cover system and an asphalt/clay cover over an area west of GM Drive (Area of Interest (AOI) 21-2) after removal of accessible greater than 50 mg/kg PCB soils and placement of less than 50 mg/kg materials from the off-site Bailey’s Branch/Pleasant Run removal action to prevent water infiltration into underlying residual PCB impacted soils and bedrock.
Installation of PCB impacted groundwater collection systems (Site Source Control Systems):
Outfall 002 trench collection system.
Pilot cut of the East Plant Area perimeter bedrock trench groundwater collection system.
Other interim groundwater collection systems.
Construction of a water treatment plant for Site Source Control collection systems (National Pollutant Discharge Elimination System (NPDES) Permit No. IN0064424 (Outfall 004)).
Stormwater Pond dredging and upgrading activities (AOI-10).

Semi-annual groundwater monitoring (Environmental Indicator CA750).
Inspection and maintenance of engineered Cover Systems at the East and West Plant Areas.
Inspection and maintenance of TSCA Vault – leachate monitoring continues.
Site Source Control groundwater collection system and Vault collection system treatment at the NPDES permitted water treatment plant.
Removal of mobile PCB contaminated Dense Non-Aqueous Phase Liquid (DNAPL/heavy oil) from bedrock at AOI-8.
Investigation of subsurface conditions in WWTP area west of GM Drive: GM Recovery testing for removal of PCB Oils from fractured bedrock in this area.
Construction of the Phase II Perimeter Groundwater Trench.

Corrective Measures Proposal, which describes the proposed final remedy for the project. This will be issued for public comment once completed.
Design of additional sections of East Plant Area perimeter bedrock trench groundwater collection system.

Spring 18 Semi-Annual Spring Water Sampling.
Performance monitoring for pilot cut of East Plant Area perimeter bedrock trench groundwater collection system including dye trace studies.
Excavation and off-site disposal of PCB impacted fill materials at off-site Parcels 400/430/431.
Design of additional sections of East Plant Area perimeter bedrock trench groundwater collection system.
Remediation of PCB contaminated materials from approximately 5 miles of the Bailey’s Branch/Pleasant Run creek system and properties adjacent to the creek system is complete. Restoration of the final downstream properties is complete.
Remediation of PCB contaminated materials from unnamed tributaries west and north of the Plant and restoration is complete.