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Quality Control Report _ <br /> 1for <br /> Hydrocarbons ( BTEX, TPH-G, TPH-D) <br /> 4 Analyzed By: S . Singh Reviewed By: B. Stafford <br /> ) <br /> QC Sample ID: 061592 -S-BTEX Spike Level : BTEX 20ppb <br /> NA -S-TPHG TPHG NA <br /> 061692 -S-TPHD TPHD 200pyb <br /> Sample Matrix: Water Spiked Sample ID: Spiking Water <br />�l <br /> Quality Control Report for Exam Number: 692-3214 . 1 <br /> Matrix <br /> Method Matrix Spike <br /> Constituent Blank Spike Dup Spike <br /> (ug/L) Rec) ( % Rec ) Range <br /> Benzene ND 82 S1 1 <br /> _ Toluene ND 86 87 1 <br />+ Ethylbenzene ND 90 88 2 <br /> Xylenes ND 85 84 1 <br /> 1 TPH-Gasoline ND NA NA NA <br /> TPH-Diesel ND 98 64 34 <br /> Method Blank: A method blank demonstrates the presence or <br /> absence of contamination in the analytical <br /> procedure. <br /> Matrix Spike and Matrix Spike Duplicate: A matrix spike is a <br /> ry sample to which a known amount of analyte has been added. <br /> The percent recovery and percent recovery difference of <br /> the matrix spike and the matrix spike duplicate are <br /> r analyzed to measure the accuracy and precision of the <br /> f analytical procedure. <br /> NOTES: <br /> TPH: Total Petroleum Hydrocarbons <br /> ND : None Detected <br /> NA : Not Available <br /> r� <br />�s ���uY��n�ozalouP,e�P,u <br /> Fresno Modesto Visaha Bakefsheld <br />