United States Environmental Protection Agency
Region III
POLLUTION REPORT

Subject: 

See previous POLREPS for Site description information.  

A summary of the removal site evaluation (characterization) conducted is contained in the document "Summary of Removal Site Evaluation Analytical Data", dated February 2, 2010, posted to the web at www.epaosc.org/tcca.  In general, the Site contains inorganic and organic contamination of soil (primarily sandblasting grit) and shallow underground water (contaminated by former lagoon contents and tank releases).  Additionally, the Site's ground water and surface water exiting the TCCA property contains detectable concentrations of Site-related contamination.  Finally, samples collected from residential properties adjacent to the Site and from dirt alongside the roadways leading from the Site contain detectable concentrations of inorganic and/or organic contaminants attributable to the Site.  

The TCCA Site contains a large amount of sandblasting grit contaminated by inorganic contamination (e.g., lead) and organic contamination (e.g., polycyclic aromatic hydrocarbons (PAHs)).  The Site formerly contained lagoons; the residuals in these lagoons contain high concentrations of organic contaminants such as benzene, naphthalene, and PAHs and these contaminants have entered into the subsurface soils and shallow underground water.  

The Site property continues to be used by numerous businesses for storage of equipment and materials.  

Based upon the analytical results of the samples collected during the removal site evaluation and an evaluation of the potential threats posed by the hazardous substance contamination at the Site, EPA Region III approved additional funding to conduct additional response actions at the Site. The total funding now available for response actions is $2,650,469.  The response action will generally include actions intended to consolidate onto the TCCA property those hazardous substances posing a threat which have migrated from the property and to minimize further release of hazardous substances from the Site through a combination of disposal and covering actions.

After obtaining formal access to the railroad property adjacent to the TCCA property, EPA re-initiated the response action at the Site.  Initial actions focused on characterizing the contaminants upon the railroad right of way, evaluating drainage from the TCCA property, evaluating details of the pending response action (such as erosion controls), and coordinating with the Site owner, users of the property, and State and Local government entities.  The OSC informed adjacent residents of the general nature of the pending response action and then re-initiated response activities on October 19, 2010.

A Time Critical Removal Action is ongoing and current activities are described in the next sections.

The last loads of 2RC stone were placed to stabilize the clay cap, this material was compacted using a vibratory roller to create a surface that will withstand vehicle traffic and protect the clay cap.

Equipment and supplies were demobilized from the Site as appropriate including offfice trailers, heavy equipment and personnel.  

Topsoil, grass seed and straw stabilization matting were placed along the north east border of the Site in addition to along the sediment pond slopes to create a buffer area for stormwater prior to entering into the sediment pond. Areas seeded last week along the sediment pond berm are showing germination.

A warning sign was posted in the capped area warning not to dig in the area due to contaminated sands buried below.

A transit and GPS were used to verify the grade of the Site to ensure stormwater will flow into the sediment pond.  This data will also be utilized to create a final "as-built" map of the area.

Onsite concrete barriers no longer in use were sold through GSA bidding, the purchaser is in the process of moving the barriers from the Site.

Major Site operations were completed on 5/10/2011, the crew has demobilized from the Site.

Additional trees were planted on the northeastern side of the Site to restore the physical and visual barrier between the Site and the residential properties.

As per the April 2011 Action Memorandum, the OSC has identified properties affected by dust generated during the response action.  The OSC worked with those property owners to determine a cost to have the residential structures cleaned.  The residents will submit the necessary paperwork to receive payment to have these services performed.