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Laboratories, Inc. <br />Report Header Explanations <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 />PCWSCN A number assigned to reagents/standards to trace to the manufacturer's certificate of analysis <br />PQL Practical Quantitation Limit, typically 5 times the MDL. <br />QC True Value of the Control Sample or the amount added to the Spike <br />Rec Recovered amount of the true value or spike added, 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 />QC Sample Types <br />AS Analytical Spike (Post Digestion) LCSWD Laboratory Control Sample - Water Duplicate <br />ASD Analytical Spike (Post Digestion) Duplicate LFB Laboratory Fortified Blank <br />CCB Continuing Calibration Blank LFM Laboratory Fortified Matrix <br />CCV <br />Continuing Calibration Verification standard <br />DUP <br />Sample Duplicate <br />ICB <br />Initial Calibration Blank <br />ICV <br />Initial Calibration Verification standard <br />ICSAB Inter -element Correction Standard - A plus B solutions <br />LCSS Laboratory Control Sample - Soil <br />LCSSD Laboratory Control Sample - Soil Duplicate <br />LCSW Laboratory Control Sample - Water <br />LFMD <br />Laboratory Fortified Matrix Duplicate <br />LRB <br />Laboratory Reagent Blank <br />MS <br />Matrix Spike <br />MSD <br />Matrix Spike Duplicate <br />PBS <br />Prep Blank - Soil <br />PBW <br />Prep Blank - Water <br />PQV <br />Practical Quantitation Verification standard <br />SDL <br />Serial Dilution <br />':QC Sample Type Explanations <br />Blanks Verifies that there is no or minimal contamination in the prep method or calibration procedure. <br />Control Samples Verdes the accuracy of the method, including the prep procedure. <br />Duplicates Verdes the precision of the instrument and/or method. <br />Spikes/Fortified Matrix Determines sample matrix interferences, d any. <br />Standard Verifies the validity of the calibration. <br />B Analyte concentration detected at a value between MDL and PQL. The associated value is an estimated quantity. <br />H Analysis exceeded method hold time. pH is a field test with an immediate hold time. <br />Target analyte response was below the laboratory defined negative threshold. <br />The material was analyzed for, but was not detected above the level of the associated value. <br />The associated value is either the sample quantitation limit or the sample detection limit. <br />Method References <br />(1) EPA 600/4-83-020. Methods for Chemical Analysis of Water and Wastes, March 1983. <br />(2) EPA 600/R-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 />(4) EPA SW -846. Test Methods for Evaluating Solid Waste. <br />(5) Standard Methods for the Examination of Water and Wastewater. <br />(1) QC results calculated from raw data. Results may vary slightly 9 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 />(4) An asterisk in the "XQ" column indicates there is an extended qualifier and/or certification qualifier <br />associated with the result. <br />(5) If the MDL equals the PQL or the MDL column is omitted, the PQL is the reporting limit. <br />For a complete list of ACZ's Extended Qualifiers, please click: http://www.acz.com/public/extquallist.ydf <br />REP001.09.12.01 <br />L22295-1501200958 Page 3 of 8 <br />