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ACZ Laboratories, Inc. <br />2773 Downhill Drive Steamboat Sprigs, CO 80487 (800) 334 -5493 <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 />PCN/SCN A number assigned to reagents /standards to trace to the manufacturer's certificate of analysis <br />PQL Practical Quanbtation 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 />AS <br />Analytical Spike (Post Digestion) <br />LCSWD <br />Laboratory Control Sample - Water Duplicate <br />ASD <br />Analytical Spike (Post Digestion) Duplicate <br />LFB <br />Laboratory Fortified Blank <br />CCB <br />Continuing Calibration Blank <br />LFM <br />Laboratory Fortified Matrix <br />CCV <br />Continuing Calibration Verification standard <br />LFMD <br />Laboratory Fortified Matrix Duplicate <br />DUP <br />Sample Duplicate <br />LRB <br />Laboratory Reagent Blank <br />ICB <br />Initial Calibration Blank <br />MS <br />Matrix Spike <br />/CV <br />Initial Calibration Verification standard <br />MSD <br />Matrix Spike Duplicate <br />ICSAB <br />Inter - element Correction Standard - A plus B solutions <br />PBS <br />Prep Blank - Soil <br />LCSS <br />Laboratory Control Sample - Soil <br />PBW <br />Prep Blank - Water <br />LCSSD <br />Laboratory Control Sample - Soil Duplicate <br />PQV <br />Practical Quanhtation Verification standard <br />LCSW <br />Laboratory Control Sample - Water <br />SDL <br />Senal 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 Venfies 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 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 />L Target analyle response was below the laboratory defined negative threshold <br />U The material was analyzed for, but was not detected above the level of the associated value <br />The associated value is either the sample quantltation limit or the sample detection limit <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 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 />(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 /pubIic /extquallist pdf <br />REP001 09 12 01 <br />Page 11 of 27 <br />