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A N I ,SIV Inc <br /> Analylrca!& Environmental Chemistry <br /> LABORATORY CONTROL SAMPLES <br /> Method VOLATILE AROMATICS AND TPH AS GASOLINE BY GC/PID-FID <br /> Date Aquwred 02/14/99 <br /> Expressed as mass(ng) <br /> Amount Amount LCS %Rec <br /> Analyte Added Found Rec Limits <br /> Methyl-tent-butyl Ether 40 40 100% 80-130 <br /> Benzene 20 21 103% 85-120 <br /> Toluene 20 21 104% 85-120 <br /> Ethylbenzene 20 21 105% 85-120 <br /> m,p-Xylenes 20 21 103% 85-120 <br /> o-Xylene 20 21 105% 85-120 <br /> TPM-Gasoline 1250 1,236 99% 65-140 <br /> Surrogates LSC-8020M Batch ID 0214-04 <br /> a,a,a-TFT-FID 96% 60-130 <br />' 4-BFB-FID 105% 55-150 <br /> 4-BFB-PID 102% 65-140 <br /> Surrogates LSC-GASOLINE Batch ID 0214-05 <br /> a,a,a-TFT-FID 93% 60-130 <br /> 4-BFB-FID 106% 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 /> �r...n <br /> t,..a <br /> LAG <br /> .°•wm <br /> tom'° a ,•.°° +sm a..° aw <br /> ,v. ra mwiw.° <br /> t•.n <br /> rr•m <br /> ncntsaa <br /> .wtm <br /> ,a•.n <br /> wwws <br /> mww° <br /> +aw mm <br /> „c cew.ma <br /> • rear° <br /> 455 RESERVATION ROAD, SUITE G • MARINA, CA 93933 0 (408) 883-0123 • FAX(408) 883-0122 <br /> "'ycled pap- <br /> QC-LCS <br />