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ACZ Laboratories, Inc. <br />2773 Downhill Drive Steamboat Spnnqs, 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 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 Continuing Calibration Verification standard LFMD Laboratory Fortified Matrix Duplicate <br />DUP Sample Duplicate LRB Laboratory Reagent Blank <br />ICB Initial Calibration Blank MS Matrix Spike <br />ICV Initial Calibration Verification standard MSD Matrix Spike Duplicate <br />ICSAB Inter - element Correction Standard - A plus B solutions PBS Prep Blank - Soil <br />LCSS Laboratory Control Sample - Soil PBW Prep Blank - Water <br />LCSSD Laboratory Control Sample - Soil Duplicate PQV Practical Quantitation Verification standard <br />LCSW Laboratory Control Sample - Water SDL Serial Dilution <br />OC Sample Type Explanations <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 /Forted Matrix Determines sample matrix interferences, if any <br />Standard Verdes the validity of the calibration <br />ACZ • ualifiers (Qua <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 afield test with an immediate hold time <br />L Target analyte 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 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 />Comments <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/public /extguallrst.pdf <br />REP001 09 12 01 <br />Page 7 of 13 <br />