Final Remedial Action Completion Report for the ... - Rvaap.org

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Comment
Shaw Environmental, Inc. 5 of 39
Recommendation
Response
range recoveries (as long as
the recovery is over 10%).
Although a number of
surrogate recoveries were
outside the allowable range
(as shown in Table 2-4) for
method blanks and LCSs, no
qualification was assigned.
The following sample
results will be assigned UJ
based on surrogate recovery
(one or more outside the
allowable range of 50-
150%).
(d) PCBs: LCG does not
address sample qualification
criteria (or the corrective
action) on the samples,
when associated method
blank and LCS yields out of
range recoveries (as long as
the recovery is over 10%).
Although a number of
surrogate recoveries were
outside the allowable range
(as shown in Table 2-5) for
method blanks and LCSs, no
qualification was assigned.
The following sample
results will be assigned UJ
based on surrogate recovery
(one or more outside the
allowable range of 50-
150%).
(e) Explosives: The second
source verification of tetryl
yielded %D of high bias (lot
#s 0508053, 0708030,
0708235). However, no