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• ~O~(„LAB CORE LABORATORIES
<br />DUAL I T Y A S S U R A N C E M E T H O D S
<br />R E F E R E N C E S A N D N O T E S
<br />Report Oat e: 07/24/96
<br />MB Method Blank
<br />!CB Initial Calibration Blank
<br />CCB Continuing Calibration Blank
<br />SPIKE DC SAMPLE IDENTIFICATION
<br />MS Method (Matrix) Spike
<br />MSD Method (Matrix) Spike Duplicate
<br />PDS Post Digestion Spike
<br />SB Spiked Blank
<br />SBD Spike Blank Dup licate
<br />REFERENCE STANDARD DC SAMPLE IDENTIFICATION
<br />LCS Laboratory Control Standard
<br />RS Reference Standard
<br />ICV Initial Calibration Verification Standard
<br />CCV Continuing Calibration Verification Standard
<br />ISA/ISB [CP Interface Check Sample
<br />ICL Initial Calibration/Laboratory Control Sample
<br />DSC Distilled Standard Check
<br />DUPLICATE DC SAMPLE IDENTIFICATION
<br />MD Method (Matrix) Duplicate
<br />ED Extraction Duplicate
<br />DD Digestion Duplicate
<br />Analyses performed by a subcontract laboratory are indicated on the
<br />analytical and/or quality control reports under "technician" using
<br />the follauing codes:
<br />SUBCONTRACT LABORATORY LODE
<br />Core Laboratories - Anaheim, CA • AN
<br />Core Laboratories - Casper, NY • CA
<br />Core Laboratories - Corpus Christi, TX CC
<br />Core Laboratories - Houston, T% • HP
<br />Core Laboratories - Lake Charles, LA LC
<br />Core Laboratori es - Long Beach, CA • LB
<br />Other Subcontract Laboratories • %%
<br />EXPLANATION OF DATA FLAGS
<br />8 - This £t ag is used to indicate that an analyte is
<br />present in the method blank as cell as in the sample.
<br />It indicates that the client should consider this
<br />when evaluating the results.
<br />D - This flag indicates that surrogates were diluted out
<br />of calibration range and cannot be quantified.
<br />E - Indicates that a sample result is an estimate because
<br />the concentration exceeded the calibration range of
<br />the instrument.
<br />I - Used to indicate matrix interference.
<br />J - Indicates [hat a value is an estimate. It is used
<br />uh en a compound is determined to be present based on
<br />the mass spectral data, but at a concentration less
<br />than the practical quanti ration limit of the method.
<br />Page 2
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