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5 <br /> Quality Control Report <br /> for <br /> Hydrocarbons (BTEX, TPH-G, TPH-D) <br /> Analyzed By: S. Singh Reviewed By: B. Stafford <br /> QC Sample ID: NA -S-BTEX Spike Level: BTEX NA . <br /> NA -S-TPHG TPHG NA <br /> 061192 -S-TPHD TPHD 5 . 0ppm <br /> . f . <br /> Sample Matrix: Soil Spiked Sample ID: Spiking Soil f <br /> Quality Control Report for Exam Number: _692-3121. 1-5 ,7 4 <br /> Matrix <br /> Method Matrix Spike <br /> Constituent Blank Spike Dup Spike ; <br /> (mg/kg) ( % Rec) Rec) Range <br /> Benzene ND NA NA NA <br /> Toluene IND. NA NA NA <br /> i <br />+ Ethylbenzene ND NA NA NA <br /> Xylenes ND NA NA NA <br /> TPH-Gasoline ND NA NA NA <br /> TPH-Diesel ND 127 114 13 <br /> 3. <br /> Method Blank: A method blank demonstrates the presence or ! <br /> absence of contamination in the analytical <br /> procedure. <br /> I 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 /> NA : Not Available <br /> i 1 <br /> I <br /> ,� �i�tt�u�rriing�¢oatatorita.�n4. <br /> i' Ffe5'-. MOOes%C V'S o:.:: gdKB56c I <br /> 1 <br />