Progress report summarizing the reef fish sampling, PCB - Earthjustice

insulation to be left on board accounted for 97.6% (705.5 lbs) of the 722.6 lbs of total
solid PCBs estimated to remain on the ex-Oriskany after environmental
remediation. Fiberglass bulkhead insulation was identified as contributing 6.8 lbs
to the PCB load remaining on board (.94%). Although paints had unregulated levels
of PCBs, the remaining paint contributed an estimated 9.8 lbs of total PCBs
remaining on board (1.36%). Rubber products and vent gaskets remaining on board
contributed 0.4 lbs and 0.1 lbs of PCBs, respectively.
Based on Pape’s (2004) analysis, of an estimated 832.2 lbs of solid PCBs on board
the ex-Oriskany prior to environmental remediation (1,559 lbs, at 95% Upper
Confidence Limit), that amount was reduced by an estimated 13.2% to 722.6 lbs of
solid PCBs (1,342 lbs at the 95% Upper Confidence Limit) at the time the ship was
ready for reefing. This was based on the scenario of 5% paint removal, 10% cable
removal, 72.6% bulkhead insulation removal, no rubber or vent gasket product
removal and 100% lubricant
removal.
Additional ex-Oriskany
environmental remediation
included removal of the entire
aircraft carrier flight deck down
to clean bare metal. This was
necessary to remove asphalt and
underlying PCB contaminated
wood and other materials (Jon
Dodrill and Robert Turpin,
personal observation).
I(C) (7) Navy Sponsored Pre-Sink
Monitoring
Immediately prior to the reefing
of the ex-Oriskany, the Navy
contracted with the University
of West Florida to conduct
trawling and hook-and-line
sampling for fish to obtain presink
baseline PCB data.
Specimens for PCB analysis along with water and
sediment samples were collected for PCB analysis from the immediate area of the
proposed sink site as well as several artificial reefs in the general area and some
locations further inshore (Figure 2) (Snyder et al., 2007).
20 | P age
Figure 2. Oriskany Reef Pre-sink trawl and hook
and line sampling sites (from Snyder et al., 2007).