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A0Z Laboratories, Inc. Inor <br />' ' <br />7113 Downhill Drive Steamb(ml Spunys. CO 8046, (N) O Xi4-')49:i <br />Batch A distinct set of samples analyzed at a specific time <br />Found Value of the QC Type of interest <br />Limit Upper limit for RPD, in %. <br />Lower Lower Recovery Limit, in % (except for LCSS, mg/Kg) <br />MDL Method Detection Limit. Same as Minimum Reporting Limit. Allows for instrument and annual fluctuations. <br />PCNISCN A number assigned to reagents/standards to trace to the manufacturer's certificate of analysis <br />POL Practical Quantitation Limit, typically 5 times the MDL. <br />OC True Value of the Control Sample or the amount added to the Spike <br />Rec Amount of the true value or spike added recovered. in % (except for LCSS, mg/Kg) <br />RPD Relative Percent Difference, calculation used for Duplicate QC Types <br />Upper Upper Recovery Limit, in % (except for LCSS, mg/Kg) <br />Sample Value of the Sample of interest <br />AS Analytical Spike (Post Digestion) LCSWD <br />ASD Analytical Spike (Post Digestion) Duplicate LFB <br />CCB Continuing Calibration Blank LFM <br />CCV Continuing Calivation Verification standard LFMD <br />DUP Sample Duplicate LRB <br />ICB Initial Calibration Blank MS <br />ICV Initial Calibration Verification standard MSD <br />ICSAB Inter-element Correction Standard - A plus B solutions PBS <br />LCSS Laboratory Control Sample - Soil PBW <br />LCSSD Laboratory Control Sample - Soil Duplicate POV <br />LCSW Laboratory Control Sample - Water SDL <br />Laboratory Control Sample - Water Duplicate <br />Laboratory Fortified Blank <br />Laboratory Fortified Matrix <br />Laboratory Fortified Matrix Duplicate <br />Laboratory Reagent Blank <br />Matrix Spike <br />Matrix Spike Duplicate <br />Prep Blank - Soil <br />Prep Blank - Water <br />Practical Quantitation Verification standard <br />Serial Dilution <br />Blanks Verifies that there is no or minimal contamination in the prep method or calibration procedure. <br />Control Samples Verifies the accuracy of the method, including the prep procedure. <br />Duplicates Verifies the precision of the instrument and/or method. <br />Spikes/Fortified Matrix Determines sample matrix interferences, if any. <br />Standard Verifies the validity of the calibration. <br />B Analyte concentration detected at a value between MDL and PQL. <br />H Analysis exceeded method hold time. pH is a field test with an immediate hold time. <br />U Analyte was analyzed for but not detected at the indicated MDL <br />(1) EPA 600/4-83-020. Methods for Chemical Analysis of Water and Wastes, March 1983. <br />(2) EPA 600IR-93-100, Methods for the Determination of Inorganic Substances in Environmental Samples, August 1993. <br />(3) EPA 600/R-94-111. Methods for the Determination of Metals in Environmental Samples - Supplement I, May 1994. <br />(5) EPA SW-846. Test Methods for Evaluating Solid Waste, Third Edition with Update III, December 1996. <br />(6) Standard Methods for the Examination of Water and Wastewater, 19th edition, 1995. <br />(1) QC results calculated from raw data. Results may vary slightly if the rounded values are used in the calculations. <br />(2) Soil, Sludge, and Plant matrices for Inorganic analyses are reported on a dry weight basis. <br />(3) Animal matrices for Inorganic analyses are reported on an "as received" basis <br />REPIN03.02.07.01 <br />Page 6 of 11