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ANIEN Inc <br /> Analytical & Environmental Chemistry <br /> LABORATORY CONTROL SAMPLES <br /> Method VOLATILE AROMATICS AND TPH AS GASOLINE BY GC/PID <br /> Date Aquired 07/01/99 <br /> Expressed as mass(ng) <br /> Amount Amount LCS %Rec <br /> Analyte Added Found Rec Limits <br /> Methyl-tert-butyl Ether 40 38 94% 80-130 <br /> Benzene 20 19 94% 85-120 <br /> Toluene 20 19 95% 85-120 <br /> Ethylbenzene 20 19 97% 85-120 <br /> m,p-Xylenes 20 19 96% 85-120 <br /> o-Xylene 20 20 98% 85-120 <br /> TPH-Gasoline 1,250 1141 91% 65-140 <br /> Surrogates LSC-8020M Batch ID 0701-04 <br /> a,a a-TFT-FID 94% 60-130 <br /> 4-BFB-FID 96% 55-150 <br /> 4-BFB-PID 107% 65-140 <br /> Surrogates LSC-GASOLINE Batch ID 0701-05 <br /> a a,a-TFT-FID 85% 60-130 <br /> 4-BFB-FID 109% 55-150 <br /> 4-BFB-PID 108% 65-140 <br /> *=Values outside of QC limits <br /> LCS Recovery 0 out of 7 outside limits <br /> . .� !•d <br /> .oma I <br /> I I I <br /> eee ,o ee ,e oo euoo <br /> 1.aPl <br /> 455 RESERVATION ROAD, SUITE G o MARINA, CA 93933 o (831) 883-0123 FAX (831) 883-0122 <br /> recV��ed paper QC-LCS <br />