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$901 odh Industrial Road Penna,11 61615-1564 <br /> nglneermg,Inc Phone(304)692.4422 Lab Fax(309)692-5232 An IEPA Contract Laboratory <br /> Environmental Science and Engineering, Inc. <br /> Table of Definitions for QC Reports <br /> Columnar Terms <br /> Item Title Definition <br /> ------------------------------------------------------------------------------------------------------------------------------ <br /> FOUND Sample Concentration SPIKE SAMPLE CONC - LESS THE UNSPIKED SAMPLE CONC. <br /> FOUND #1 Concentration of UNSPIKED Sample <br /> FOUND #2 Concentration of Replicate Sample <br /> %RECV Percent Recovery: 100*(FOUND/TARGET) displayed inappropriate significant <br /> figures. <br /> RECV CRIT Recovery Criteria Criteria for Percent Recovery set in the parameter record. <br /> UNSPIKED Unspiked Sample Concentration Concentration of the DA or UN sample. <br /> N*BLK Concentration of Method Blank <br /> R.P.D. Relative Percent Difference (Matrix Spikes) 100*(ABS (%RECV SPMn - %RECV SPMn-1)/(%RECV SPMn + <br /> %RECV SPMn-i)/2) . <br /> R.P.D. Replicate Percent Difference (Control Spikes) 100*(ABS (%RECV SPn - %RECV SP1)/(%RECV SPn + %RECV SP1)/2 <br /> R.P.A. Replicate Percent Difference (Replicate Samples) 100*(ABS (Conc Rep #2 - Conc Rep #1)/(Cone Rep #2 + <br /> MAX % REPL DIFF Maximum value of Replicate Difference Conc Rep #1)/2). <br /> C.D.L. Calibration Curve Detection Limit <br /> NA Not Analyzed <br /> N/A Not Available <br /> UNSPIKED Q 0 If the parameter is reported as a "LESS THAN", the data is <br /> converted to 0 for calculation purposes. <br /> MIN.REC Minimum Recovery Limit Average Recovery - Recovery Limit. <br /> MAX.REC Maximum Recovery Limit Average Recovery + Recovery Limit. <br /> DA Refers to sample. <br /> UN Refers to second analysis of sample for QC purposes. <br /> SP Spike of reagent (blank) grater or soil . <br /> SPMI,SPM2 Duplicate Matrix Spikes of a sample. <br /> SPM Matrix Spike of a sample. <br /> MB Refers to Method Blank. <br /> I <br />