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Hitchcock, Inc.
Data Qualifier Flags
USEPA CLP Inorganic Data Qualifiers
* - Indicates that the laboratory duplicate analysis was not within control limits.
+ - Indicates that the correlation coefficient for MSA is less than 0.995.
B - Indicates analyte results between the IDL and the contract required detection limit (CRDL).
E - The reported value is considered estimated due to matix interference.
M - Indicates that GFAA duplicate injection precision criteria was not met.
N - Indicates that the spiked sample recovery was not within control limits.
R - The reported value is unusable and rejected due to variance from quality control criteria.
S - Reported value was determined by the method of standard additions (MSA).
U - Indicates analyte results less than the instrument detection limit (IDL).
V - The reported value is considered estimated due to variance from quality control criteria.
W - Indicates GFAA analytical spike was out of 85-115 percent control limit, while sample absorbance was less than 50 % of spike absorbance.
USEPA CLP Organic Data Qualifiers
A - Indicates that the compound is an aldol condensation product.
B - The compound is also found in an associated blank.
C - Compound identification has been qualitatively confirmed by GC/MS.
D - The reported value is taken from the analysis of a diluted sample.
E - The reported value exceeds the calibration range of the instrument.
J - The compound was analyzed for and determined to be present in the sample because the mass spectrum of the compound meets the identification criteria of the method. The concentration reported is an estimated value, less than the practical quantitation limit for the sample.
N - Indicates presumptive evidence for compound identification.
P - Indicates that the percent difference between the results from the two analytical columns is greater than 25%.
R - The reported value is unusable and rejected due to variance from quality control criteria.
S - The reported value is suspected to be due to laboratory contamination.
U - The compound was analyzed for but not detected at or above the quantitation limit indicated.
V - The reported value is considered estimated due to variance from quality control criteria.
TCEQ TRRP Data Usability Qualifiers/Bias Codes
E - Indicates analyte result greater than the upper quantitation limit (UQL).
H - Bias in sample result is likely to be high.
J - Estimated: The analyte was detected and positively identified. The associated numerical value is the approximate concentration of the analyte in the sample.
L - Bias in sample result is likely to be low.
NJ - Tentatively identified, reported concentration is estimated: The analysis indicates the presence of an analyte for which there is presumptive evidence to make a tentative identification and the associated numerical value represents its approximate concentration.
R - Rejected: The data are unusable
U - Not detected: Analysis for the analyte was performed, but the analyte was not detected about the level of the associated value. The associated value is the sample quantitation limit (SQL).
UJ - Not detected, SQL is estimated: The analyte was not detected above the reported SQL. However, the reported SQL may be inaccurate or imprecise.
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Last update: August 31, 2003.