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Quality Control Report <br /> for <br /> Hvdrocarbons (BTEX .TPH-G, TPH-D) <br /> Analyzed By: S. Singh Reviewed By: J. Koelewvn <br /> QC Sample ID: NA S-BTEX Spike Level BTEX NA <br /> 050291 -S-TPHG TPHG 1OPPM <br /> NA S-TPHD TPHD NA <br /> Sample Matrix: Soil Spiked Sample ID: 691-2254 .3 <br /> Quality Control Report for Exam Number: 691-2219.1-2 <br /> Matrix <br /> Method - Matrix . Spike <br /> Constituent Blank Spike Dup Spike <br /> (mg/kg) {% Rec) I.. (% Rec) Range <br /> Benzene ND NA NA NA <br /> Toluene ND NA NA NA ' <br /> Ethylbenzene ND NA NA NA <br /> Xylenes ND NA NA NA <br /> TPH-Gasoline -ND I_ 119 19 <br /> TPH-Diesel ND NA NA NA <br /> Method Blank: A method blank demonstrates the: presence or T <br /> absence of contamination in. the ..analytcal <br /> procedure. <br /> Matrix Spike and Matrix Spike Duplicate: A matrix spike is a <br /> 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 /> analyzed to measure the accuracy and precision of the <br /> analytical procedure. <br /> NOTES: <br /> TPH: Total Petroleum Hydrocarbons <br /> ND None Detected <br /> I <br /> i <br /> Fresno Modesto Visalia Bakersfield <br />