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ANI EN Inc <br /> Analytical& Environmental Chemistry <br /> LABORATORY CONTROL SAMPLES <br /> Method VOLATILE AROMATICS AND TPH AS GASOUNE 13 GC/PID <br />' Date Agwred 04/04/98 <br /> Expressed as mass(ng) <br /> Amount Amount LCS %Rec <br /> Analyte Added Found Rec Limits <br /> Methyl-tert-butyl Ether 40 37 92% 83-123 <br /> Benzene 20 20 102% 89-111 <br /> Toluene 20 20 102% 89-113 <br /> Ethylbenzene 20 21 103% 87-113 <br /> m,p-Xylenes 20 20 101% 88-118 <br /> o-Xylene 20 21 104% 86-115 <br /> TPH-Gasoline 1250 1206 96% 68-138 <br /> Surrogates LSC-8020M Batch ID 0405-04 <br /> a a a-TFT-FID 103% 58-127 <br /> 4-BFB-FID 110% 55-151 <br /> 4-BFB-PID 114% 68-137 <br /> Surrogates LSC-GASOLINE Batch ID 0405-05 <br /> a,a,a-TFT-FID 89% 58-127 <br /> 4-BFB-FID 126% 55-151 <br /> 4-BFB-PID 127% 68-137 <br /> Values outside of QC limits <br /> LCS Recovery 0 out of 7 outside limits <br />' 1 I <br /> a» <br /> 1L » 1 Y <br /> 455 RESERVATION ROAD, SUITE G • MARINA, CA 93933 • (408) 883-0123 • FAX (408) 883-0122 <br /> ^j ' recycled paper <br /> QC-LCS <br />