Draft Data Validation Plan Review Form Page 4
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29Draft Data Validation PRF-Tier II
Date: March 2, 2004
Page 4
Revision: 4.0
-
1.0
Volatile Organic Data Review
Initial Calibration
1.4
A. Is the percent Relative Standard Deviation (%RSD) for
Additional Information: The laboratory has the option of
individual analytes in the initial calibration below 15%
using linear regression or quadratic calibration equations
RSD?
for individual analytes that don’t meet the 15% criteria.
B. If not, are alternate calibration equations used for
Information concerning the acceptability for these alternate
those analytes not meeting the 15% criteria?
calibration equations must be supplied by the laboratory.
C. Is the average %RSD for all analytes below 15%
RSD?
The laboratory also has the option to re-analyze a particular
calibration standard if it is suspected that the standard has
Note: Method 8260B requires the RSD to be 15% (or lower) as
degraded. In addition, the lab may remove either the low
evidence of sufficient linearity to employ an average relative
level or high level calibration point from the %RSD analysis
response factor (RRF).
A laboratory may choose other
for up to two individual analytes to bring the %RSD within
criteria. For example, the NFGs specify 30% maximum RSD.
criteria.
Method 8000 (Section 7.5.1.2) specifies a linearity criterion of
20% RSD. That criterion pertains to GC and High Performance
If certain individual analytes have %RSDs above the criteria,
Liquid Chromatography methods other than GC/MS.
but the average of all the analytes is below 15% RSD, then
the average RRF is acceptable for use.
The reviewer should be aware that the following compounds
may display poor response and linearity. The acceptance
Record the analytes in the initial calibration that used an
criteria for these compounds are the same as for other target
alternate calibration curve or had %RSD values greater than
analytes, but the Data Validator may use this knowledge in his
15%.
or her data assessment.
Chloroform
1,1-Dichloroethene
Ethyl benzene
1,2-Dibromo-3-chloropropane
Toluene
Vinyl chloride
Action: If the %RSD for each analyte is below 15%, no
qualification is necessary.
If one or two analytes had a low level calibration point removed to
better the %RSD calculation, and the detection limit was not
raised, qualifiy all undetected data as estimated. Positive data
should not be qualified. If high level calibration points were
removed, “J” any data points that are above the remaining
calibration standard concentration levels.
If the average RSD for all calibration analytes is above 15% and
average response factors are used, qualify all positive and
undetected data for those individual analytes that exceeded the
15% RSD criteria requirement as estimated .
Additional qualification, including rejection of data, may be
warranted if other quality control criteria is not within requirements.
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