Mid-Atlantic Corrective Action

Union Carbide Corp. – Private Trucking Operations
Subsidiary of Dow Chemical Company

On This Page

• Status
• Background
• Contaminants and Risks
• Institutional Controls
• Documents and Reports
• Photos, Maps and Diagrams
• Reuse Information
• Questions

EPA ID:WVD000739722
Location:
31350 1st Avenue S
Nitro, WV 25143
Property Area 40 acres
Congressional District: 2
Other Names: Dow Chemical
LAST DATE November 2012

Contacts

Bulletin Board

Status

• Union Carbide Corporation (UCC) entered into a Facility Lead agreement with EPA on December 15, 1999 for conducting corrective action at the PTO Facility. A groundwater and free-phase recovery system is currently in operation at the facility. This system is described in the Interim Measures Report submitted to EPA on August 1, 2000. The main areas of concern at PTO are two former clay-lined basins that are addressed by the recovery well system, and the former drum disposal areas
• The RCRA Facility Investigation (RFI) Workplan and two supplemental work plans have been submitted and approved by EPA in 2001, 2003, and 2006. The work was implemented and the findings from the 2001 and 2003 work have been reported to EPA in RFI reports in 2002 and 2004. In 2007 and 2008, a Phase II RFI was completed and the report was submitted to USEPA in October 2008. In September 2008, a Sitewide Groundwater Monitoring Plan was submitted to USEPA. Groundwater monitoring was completed in September 2008, December 2008, March 2009, June 2009, March 2010, and December 2010. In August 2009, the Current Conditions Report including Updated Risk Assessments was submitted to USEPA. In October 2009, November 2010, and September 2011, a Groundwater Monitoring Report was submitted to USEPA.
• Sitewide interim measures were evaluated in 2008 and additional data were collected to support interim measures evaluation, design, and implementation. Beginning in August 2008, an interim measure was conducted near SWMU 5 to address soil contamination. In December 2008, a design was prepared for an interim measure in the Ryan's Branch area. The design was finalized in 2009. Permits and approvals for construction of the interim measure were obtained from local, state, and federal agencies and stakeholders. Implementation of the interim measure was conducted from September 2009 to April 2010. In March 2010, planning was initiated for pre-design activities for SWMU 3 in concert with evaluation of possible interim measures for groundwater.
• In 2012 SWMU 1 was evaluated for a remedy consisting of protective cover and groundwater monitoring.  Geotechnical borings were installed and ultimately SWMU 1 will have an enhanced cover to limit infiltration and prevent exposure.  The evaluation of SWMU 3 was completed and an interim remedy proposed consisting of cover enhancement and groundwater performance monitoring.  It is expected that the entire site will go through public participation and final remedy selection in 2013.

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Background

• UCC's PTO Facility was used for cleaning tank trucks from 1975 to 1985. Prior to that operation, the facility was used for the disposal of various wastes from West Virginia UCC operations. The RFI Workplan described thirteen (13) Solid Waste Management Units (SWMUs) within the approximately forty (40) acre site.s.

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Contaminants and Risks

• Based on available information there are no known imminent threats to human health or the environment at the PTO Facility. The main contaminants of concern are poly-chlorinated biphenyls (PCBs), polynuclear aromatic hydrocarbons (PAHs), naphthalene, bis(2-ethylhexyl)phthalate, carbon tetrachloride, benzene and trichloroethene. .

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Institutional Controls

• Additional interim measures were performed in 2002 in order to meet the Environmental Indicator (EI) for Human Health. Additional fencing was installed around the facility in order to keep trespassers off the property. This was the final action necessary at the facility to meet the Human Health EI, which was recorded on September 19, 2002. In 2005, additional interim measures were conducted to stabilize an area of the site where subsidence was occurring and to prevent migration of contaminants into Ryan's Branch. In August 2005, UCC submitted the Groundwater (EI) to USEPA in and it was approved by USEPA in September 2005. n

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