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Laboratories, <br />Found Value of the OC Type o(interest <br />Limit Upper limit for RPD, in %. <br />Lower Lower Recovery Limit, in % (except for LCSS, mg/Kg) <br />LCL Lower Control Limit <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 manufacturefs certificate of analysis <br />PQL Practical Quantitation Limit <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 />UCL Upper Control Limit <br />Sample Value of the Sample of interest <br />SURR Surrogate LFM laboratory Fortified Matrix <br />INTS Internal Standard LFMD Labomtory Fortified Matrix Duplicate <br />DUP Sample Duplicate LRB Laboratory Reagent Blank <br />LCSS laboratory Control Sample -Soil MS/MSD Matrix Spike/Matrix Spike Duplicate <br />LCSW Laboratory Control Sample -Water PBS Prep Blank -Soil <br />LFB Laboratory Fortified Blank PBW Prep Blank -Water <br /> <br />Blanks Verifies that there is no or minimal contamination in the prep method 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 Matdz Determines sample matrix intederences, i(any. <br />w • . <br />B Analyte detected in daily blank <br />H Analysis exceeded method hold time. <br />J Analyte concentration detected at a value between MDL and POL <br />R Poor spike recovery accepted because the other spike in [he set fell within the given limits. <br />T High Relative Percent Difference (RPD) accepted because sample concentrations are less than tOz the MDL. <br />U Analyte was analyzed for but not detected at [he indicated MDL <br />V High blank data accepted because sample concentration is 10 limes higher than blank concentration <br />W Poor recovery for Silver quality control is accepted because Silver often precipitates with Chloride. <br />X Quality contreol sample is out of control. <br />Z Poor spike recovery is accepted because sample concentration is four times greater than spike concentration. <br />P Analyte concentration differs from second detector by more than 40%. <br />E Anatyte concentration is estimated due to result exceeding calibration range. <br />M Analyte concentration is estimated due to matrix interferences. <br />(1) EPA 600/4-83-020. Methods for Chemical Analysis of Water and Wastes, March 1983. <br />(2) EPA 600!4-901020. Methods for the Determination of Organic Compounds in Drinking Water (I), July 1990. <br />(3) EPA 600/R-92/729. Methods for the Determination of Organic Compounds in Drinking Water (II), July 1990. <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, 79th edition, 1995. <br />(7) OC results calculated from raw data. Results may vary slightly if the rounded values are used in the calculations. <br />(2) Organic analyses are reported on an "as received" basis. <br />REPIN03.11.00.01 <br />L4 ] 841: Pagc 22 of 29 <br />Batch A distinct set of samples analyzed at a specific time <br />