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Quality Control Report <br /> for <br /> Hydrocarbons (BTEX, TPH-G, TPH-D) <br /> Analyzed By: S. Singh Reviewed By: J. Roelewyn <br /> QC Sample ID: NL -S-BTEX Spike Level: BTEX N/A <br /> 101791 -S-TPHG TPHG 0.5ppm <br /> N/A -S-TPHD TPHD N/A <br /> Sample Matrix: Soil Spiked Sample ID: Spiking Soil <br /> Quality Control Report for Exam Number: 691-5687 . 1-13 <br /> Matrix <br /> Method Matrix Spike <br /> Constituent Blank Spike Dup Spike <br /> (mg/kg) (% Rec) (% Ree) Range <br /> Benzene ND N/A N/A N/A <br /> Toluene ND N/A N/A N/A <br /> Ethylbenzene ND N/A N/A N/A <br /> Xylenes ND N/A N/A N/A <br /> TPH-Gasoline ND 119 108 11 <br /> TPH-Diesel ND N/A N/A N/A <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 /> 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 /> N/A: Not Applicable <br /> Fresno Modesto Visalia Bakersfield <br />