Draft Data Validation Plan Review Form Page 7
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29Draft Data Validation PRF-Tier II
Date: March 2, 2004
Page 7
Revision: 4.0
2.0
Volatile Organic Data Review - Continuing Calibration
Initial Calibration Verification and Continuing Calibration
A continuing calibration standard for both target compounds and surrogates must be analyzed every 12 hours following
analysis of the instrument performance check sample (tune) and before the analyses of method blanks and samples. The
continuing calibration standards must all have Relative Response Factors (RRFs) greater than or equal to 0.05 except for
SPCCs and CCCs, and the initial calibration RRF and the continuing calibration RRF should be within +/- 25% Difference (%D).
The Tier II Data Validator must verify that the continuing calibration was analyzed at the proper frequency and in the proper
sequence. In addition, at least one target compound’s continuing calibration RRF should be recalculated and compared to
the reported result.
2.1
Has a continuing calibration verification (CCV) or 12-hour
standard (a.k.a. midpoint calibration standard) been
analyzed for every 12 hours of sample analysis?
Action: List all sample analyses that were not within 12 hours of
the previous continuing calibration analysis. Call laboratory for an
explanation or re-submission of the data. If continuing calibration
data are not available, flag all associated sample data as “R.”
2.2
Were samples analyzed within 12 hours of either the
initial calibration or the 12-hour standard?
Action: If samples were not analyzed within the 12-hour window,
all positive results should be qualified as “J.” If other criteria are
also outside of requirements, the Data Validator may qualify data
as “R.”
2.3
The continuing calibration RRFs in the 12-hour standard
for the volatile target compounds and surrogates listed in
question 1.6 must be greater than or equal to 0.01. The
RRF for all other volatile target compounds and
surrogates must be greater than or equal to 0.05.
Action: If any volatile target compound has an RRF value less
than the minimum criterion (0.01 for those compounds listed in
question 1.6 and 0.05 for all other volatile compounds), use
professional judgment for positive results to qualify the data as “J”
or “R.”
If any volatile target compound has an RRF value less than the
minimum criterion (0.01 for those compounds listed in question 1.6
and 0.05 for all other volatile compounds), qualify non-detected
compounds as “R.”
2.4.
The Percent Difference (%D) between the initial
calibration average RRF and the 12-hour standard
continuing calibration RRF must be within ±50.0 % for the
volatile target compounds and surrogates listed in
question 1.6.
The %D for all other volatile target
compounds and surrogates must be within ±25.0%.
Action: If %D value for any of the volatile target compounds listed
in question 1.6 are outside the ±50.0% criterion, qualify positive
results as “J” and non-detected compounds as “UJ.”
If %D value for any other volatile target compound is outside the
±25.0% criterion, qualify positive results as “J” and non-detected
compounds as “UJ.”
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