Three Star Anodizing Record of Decision (PDF) - New York State ...

the former raceway. Concentrations of inorganics were not significantly elevated below 22 ft in
BMW-2.
Groundwater
VOCs were below SCGs in shallow groundwater collected from the upper raceway (MW-11)
and next to the creek in the Building 12 Area (MW-8). In general, with the exception of
naphthalene, VOCs were not detected at significant concentrations within the groundwater and
soil within the raceway.
Naphthalene was detected at 160 ppb in shallow groundwater at MW-11 located in the upper
raceway. Naphthalene was also present in deep groundwater beneath the MGP area at 77 ppb
compared to the SCG of 10 ppb. No other SVOCs were present above SCGs in MW-11.
Naphthalene was not detected in significant concentrations in groundwater in other areas of the
Site, which suggests that there may have been some discharge of these materials to the former
raceway.
In the upper raceway (MW-13) total phenol was detected in shallow groundwater at 11 ppb.
Shallow groundwater in each of the wells, MW-11 and BMW-2, within the former raceway
contained up to 13 metals and cyanide above water quality standards in unfiltered samples. The
widest range of constituents and highest concentrations were detected in MW-11 in the shallow
groundwater under the raceway including concentrations of antimony (1,400 ppb), arsenic (1,100
ppb) cadmium (22 ppb), chromium (1,700 ppb), copper (3,400 ppb), nickel (230 ppb), zinc
(6,400 ppb) and cyanide (1,300 ppb) at concentrations well above groundwater standards. The
deeper groundwater in this area (BMW-2) contained seven inorganics above water quality
standards including antimony and mercury concentrations over 25 times the standards.
Because of the highly elevated inorganics observed in raceway groundwater in the 2002
sampling, an additional sample was obtained from the well in November 2008 for further
analysis. The sample was split to allow for analysis of an unfiltered and a filtered sample. In the
unfiltered sample, the inorganics detected were all at much lower concentrations than those
detected in the 2002 sample. In some cases, inorganics detected in 2002 were undetectable in
the filtered 2008 analysis. At 54 ppb, arsenic was the only inorganic detected above its
groundwater SCG (25 ppb). The significant decrease in inorganic contaminants in the filtered
sample relative to the unfiltered sample shows that the inorganics contamination is
predominantly in the form of solids and particulate suspended in the groundwater sample and not
dissolved in groundwater. The inorganics are much less mobile as suspended solids, than they
would be if dissolved in the water.
The data support the anecdotal information that the lower raceway was used as a conduit for
disposal of liquid waste and possibly solids. The data indicate that the inorganics present in the
soil in the lower raceway have not impacted groundwater. Surface soil contamination identified
during the RI/FS in the lower raceway will be addressed in the remedy selection process.
Building 21/22 Area
Surface Soil
In surface soil sample SS-08, cadmium (6.8 ppm), nickel (40 ppm) and zinc (333 ppm) were
Three Star Anodizing Inactive Hazardous Waste Disposal Site March 2009
RECORD OF DECISION Page 12