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WAGL~I <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 />R E F E R E N C E S A N D N O T E S <br />Report Date: 06/25/97 <br />COMMENTS <br />a) ND =Not detected. NC = Not calculable due to value(s) lower <br />than the detection limit. <br />b) Data in the OA report may differ from final results due to <br />digestion and/or dilution of samples into analytical ranges. <br />Quality control results are reported "as analyzed" within <br />the instruments established calibration range. <br />c) The "Time Analyzed" in the QA report refers to the start time of <br />[he analytical batch which may not reflect the actual time of <br />each analysis. The "Date Analyzed" is the actual date of analysis. <br />d) Results for soil and sludge samples are reported on a wet weight <br />basis (i.e. not corrected for percent moisture) unless otherwise <br />indicated. <br />BLANK QC SAMPLE IDENTIFICATION <br />MB Method Blank <br />EB Extraction Blank <br />ICB Initial Calibration Blank <br />CCB Continuing Calibration Blank <br />SPIKE QC SAMPLE IDENTIFICATION <br />MS Method (Matrix) Spike <br />MSD Method (Matrix) Spike Duplicate <br />PDS Post-Digestion Spike <br />SB Spike Blank <br />SBD Spike Blank Duplicate <br />REFERENCE STANDARD OL SAMPLE IDENTIFICATION <br />LLS Laboratory Control Standard <br />RS Reference Standard <br />ICV Initial LaLibra[i on Verification Standard <br />CCV Continuing Calibration Verification Standard <br />ISA/ISB ICP Interference Check Sample <br />ICL Initial Calibration/Laboratory Control Sample <br />DSC Distilled Standard Check <br />DUPLICATE QC SAMPLE IDENTIFICATION <br />MD Method (Matrix) Duplicate <br />ED Extraction Duplicate <br />Analyses performed by a subcontract laboratory are indicated on the <br />analytical and/or quality control reports under "Technician" using <br />the following codes: <br />SUBCONTRACT LABORATORY LODE <br />Core Laboratories - Anaheim, LA • AN <br />Core Laboratories - Casper, WY • CA <br />Core Laboratories - Corpus Lh risti, T% • CC <br />Lore Laboratories - Edison, NJ ' ED <br />Core Laboratories - Gulf States - Houston, TX • HE <br />Lore Labora [ories - Nouston, TX * HP <br />Core Laboratories - Indianapolis, IN • IN <br />Page 2 <br />