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A N I EN Inc <br /> Analytical& Environmental Chemistry <br /> LABORATORY CONTROL SAMPLES <br /> Method VOLATILE AROMATICS AND TPH AS GASOLINE BY GC/PID-FID <br /> Date Aqucred 02/17/99 <br />' Expressed as mass(ng) <br /> Amount Amount LCS %Rec <br /> Analyte Added Found Rec Umits <br /> 1 Methyl-tent-butyl Ether 40 40 100% 80-130 <br /> Benzene 20 20 101% 85-120 <br /> Toluene 20 21 103% 85-120 <br /> Ethylbenzene 20 21 106% 85-120 <br /> m,p-Xylenes 20 22 110% 85-120 <br /> o-Xylene 20 21 104% 85-120 <br />' TPH-Gasoline 1250 1227 98% 65-140 <br /> Surrogates LSC-8020M Batch ID 0217-04 <br /> a,a,a-TFT-FID 98% 60-130 <br /> 4-BFB-FID 99% 55-150 <br /> 4-BFB-PED 104% 65-140 <br /> Surrogates LSC-GASOLINE Batch ID 0217-05 <br /> a,a,a-TFT-FID 92% 60-130 <br /> 4-BFB-FID 100% 55-150 <br /> 4-BFB-PID 99% 65-140 <br /> "=Values outside of QC limits <br />' LCS Recovery 0 out of 7 outside limits <br /> SMM <br /> •.bh <br /> 1 <br /> a°aaaart <br /> Tlw°•a° IMO 1a,p AAN 9a.00 <br />' 11L•COIi1111LL0 <br /> NWIWIY <br /> lY1M <br /> ra.•n <br /> 1 artaasart <br /> tawr ° yam +w aaw sad <br />' '.rarmea ne mnaan <br /> fah <br />' aartaaaa <br /> asaaaaa <br /> x mrtnr° <br /> wawa <br /> aaaaaaa <br /> aa°aasa <br /> e,5--:• rasa yam arta sM° <br />' 455 RESERVATION ROAD, SUITE G MARINA, CA 93933 • (408) 883-0123 • FAX (408) 883-0122 <br /> recycled paper <br /> QC-LCS <br />