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IIWAGLAB <br />CORE LABORATORIES <br />Q U A L I T Y A S S U R A N C E M E T H O D S <br />REFERENCE S A N D N O T E S <br />Report Dete: 12!27196 <br />MB Mechod Blank <br />ICB Initial Calibration Blank <br />CCB Conci nuing Calibration Blank <br />SPIKE DC SAMPLE IDENTIFICATION <br />MS Method (Matrix) Spike <br />MSD Method (Matrix) Spike Duplicate <br />PDS Post Digestion Spike <br />58 Spiked Blank <br />SBD Spike Blank Duplicate <br />REFERENCE STANDARD OC SAMPLE IDENTIFICATION <br />LLS Laboratory Control Standard <br />RS Reference Standard <br />ICV Initial CaLibrati on Verification Standard <br />CCV Continuing Calibration Verification Standard <br />ISA/ISB ICP Interface Check Sample <br />(CL Initial Calibra2ionjLaboratory Control Sample <br />DSC Distilled Standard Check <br />DUPLICATE OC SAMPLE IDENiI FI CATION <br />ND Method (Matrix) DupLi Cate <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 />Che folloui ng codes: <br />SUBCONTRACT LABORATORY CODE <br />Core Laboratories - Anaheim, CA • AN <br />Care Laboratories - Casper, WY * CA <br />Lore Laboratories - Corpus Christi, TX • CC <br />Care Laboratories - Houston, TX • HP <br />Core Laboratories - Lake Charles, LA • LC <br />Lore Laboratories - Long Beach, CA • LB <br />Other Subcontract Laboratory es ~ XX <br />EXPLANATION OF DATA FLAGS <br />B - This flag is used to indicate that an analyte is <br />present in the method blank as well as in the sample. <br />It indicates that the clienc 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 esci ma to because <br />the concentration exceeded the calibration range of <br />the instrument. <br />l - Used co indicate matrix inierterence- <br />J - Indicates thac a value is an estimate. [t is used <br />when a compound is determined to be present based on <br />the mass spectral data, 6uc at a concenirati on less <br />Chan the practical quantitaci on limit of the method. <br />Page 4 <br />