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Quality Control Report <br /> for <br /> Hydrocarbons (BTEX, TPH-G, TPH-D) <br /> Analyzed By:--S. --Singh _ Reviewed By: B. Stafford <br /> QC Sample SD: 061592 -S-BTEX Spike Level: BTEX 20ppb <br /> NA -S-TPHG TPHG NA <br /> 061692 -S-TPHD TPHD 200ppb ' <br /> , 1 <br /> Sample Matrix: Water Spiked Sample TD: _Spiking Water <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 /> i <br /> Benzene ND 82 81 1 <br /> i <br /> Toluene ND 86 87 1 <br /> f Ethylbenzene ND 90 88 2 ' <br /> Xylenes ND 85 84 1 <br /> 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 /> 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 /> ii <br /> 11Y77(/R fIL. <br /> Fresno Mooes[o Visalia Bakersfieid <br />