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AN I EN Inc <br /> Analytical & Ewironmental Chemistry <br />' <br /> LABORATORY CONTROL SAMPLES <br /> Method VOLATILE AROMATICS AND TPH AS GASOLINE BY GC/PID <br /> Date Aquired 05/06/98 <br /> Expressed as mass(ng) <br /> Amount Amount LCS %Rec <br /> Analyte Added Found Rec Limas <br /> Methyl-tert-butyl Ether 40 36 91% 80-130 <br /> Benzene 20 22 109% 85-120 <br /> Toluene 20 21 107% 85-120 <br /> Ethylbenzene 20 22 111% 85-120 <br /> m p-Xylenes 20 22 108% 85-120 <br /> o-Xylene 20 21 106% 85-120 <br /> TPH-Gasoline 1250 1161 93% 65-140 <br />' Surrogates LSC-8020M Batch ID 0506-04 <br /> a a a-TFT-FID 102% 60-130 <br /> 4-BFB-FID 112% 55-150 <br /> 4-BFB-PID 118% 65-140 <br /> Surrogates LSC-GASOLINE Batch ID 0506-05 <br /> a a a-TFT-FID 90% 60-130 <br /> 4-BFB-FID 128% 55-150 <br /> 4-8FB-P10 125% 65-140 <br /> =Values outside of QC limits <br />' LCS Recovery 0 out of 7 outside limits !� <br /> 455 RESERVATION ROAD, SUITE G • MARINA, CA 93933 • (408) 883-0123 • FAX (408) 883-0122 <br /> i7 recyc,ec Paper <br /> r)c ICS <br />