On the week of February 23, 2007, the OSC notified via telephone the following state and local Government officials of the upcomming field activities: the Code and Safety Office of the Borough of Trainer, Delaware County EMA, USCG Delaware Bay Sector, PADEP.
On March 1st, 2007, the OSC called Trainer Industries to confirm the beginign of field activities. The OSC and the CIC visited the residential area surrounding the site to determine where to distribute factsheets and how many to distribute on March 6.
On March 5, 2007, the OSC and START met at the site and staked the location of soil borings and groundwater monitoring wells to be installed by the Geoprobe contractor later in the week. All sampling locations were marked and surveyed with an GPS instrument. Representatives from utility companies visited the site to mark utility lines prior to the comencement of work. The OSC dropped-off factsheets at the offices of the Borough of Trainer and Chester Township.
On March 6, 2007, The OSC met with START (3) and the contractor for Conoco Phillips at the ConocoPhillisp parking lot prior to proceeding to the location on the refinery property where sediment samples would be collected from Stoney Creek at the confluence of the Delaware River. START attended the additional safety training required to have access to the refinery property. Sediment samples were also collected on the banks of Stoney Creek on the site. The OSC and the CIC distributed factsheets on streets adjacent to the site in the Borough of Trainer and in Chester Township.
On March 7th through Mar 9th, the OSC, START and the Geoprobe contractor completed the following tasks:
- advancement of 15 soil borings, producing 15 surface soil samples and 15 subsurface soil samples, - installed 10 temporary groundwater monitoring wells, - collected 4 soil vapor samples.
On March 7, 2007, the Code Enforcement Officer for the Borough of Trainer assisted the OSC in obtaining the property owner for the property adjacent to the site in order to collect upstream samples of Stoney Creek.
On March 8, 2007, representatives from the USCG Delaware Bay Sector visited the site to get an update on field activities.
On March 12th through March 14th, the OSC, START and the Geoprobe contractor completed the following tasks:
- advancement of 9 soil borings and soil sampling of each, - construction of 6 temporary groundwater monitoring wells (including the reconstruction of 1 well), - sampling of the remainder of the wells (11 this week, 4 last week – total of 15 wells constructed and sampled), - breakdown of decon pad and staging of drums (8 drums total – 4 containing purge/decon water; 1 soil cuttings; 3 of debris [acetate sleeves, PPE, poly sheeting]), - shipment of samples, with the exception of those designated for PCB congener analysis to be shipped later, and - GPS marking of the 5 additional soil borings located between the embankment and Stony Creek.
The borings advanced along Stony Creek were similar to those collected elsewhere in the former lagoon area. There was a visible oily sheen at depth in a couple of the borings, and they appeared to be as impacted as the other areas within the former lagoon area. One well was constructed among these borings at a location in line with the seeps found in Stony Creek, and this was one of the two wells designated for PCB congener analysis. The other well was former 05-MET-114, which previously contained high levels of PCBs.
Trainer Industries was notified of the need to return within 2 weeks to pull the well casings and properly abandon the boreholes, and EPA will return within 90 days to remove the drums of purge water and waste following receipt of analytical data and award of a disposal contractor. The drums are staged on pallets and labeled as Investigation-Derived Waste.
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