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AN/ EN Inc <br />' Analytical& Envlr©nmenral Chemistry <br /> LABORATORY CONTROL SAMPLES <br /> Method VOLATILE AROMATICS AND TPH AS GASOLINE BY GC/PID-FID <br /> Date Aquired 02/15/99 <br /> Expressed as mass(ng) <br />' Amount Amount LCS %Rec <br /> Analyte Added Found Rec Limits <br /> Methyl-tert-butyl Ether 40 39 98% 80-130 <br />' Benzene 20 20 98% 85-120 <br /> Toluene 20 20 101% 85-120 <br /> Ethylbenzene 20 20 101% 85-120 <br /> m,p-Xylenes 20 20 100% 85-120 <br /> o-Xylene 20 20 102% 85-120 <br />' TPH-Gasoline 1,250 1,236 99% 65-140 <br /> Surrogates LSC-8020M Batch ID 0216-04 <br /> a,a a-TFT-FID 100% 60-130 <br /> 4-BFB-FID 101% 55-150 <br /> 4-BFB-PID 100% 85-140 <br /> Surrogates LSC-GASOLINE Batch ID 0216-05 <br /> a a a-TFT-FID 94% 60-130 <br /> 4-BFB-FID 106% 55-150 <br /> 4-BFB-PID 100% 65-140 <br /> "=Values outside at QC limits <br /> LCS Recovery 0 out of 7 outside(Emits <br /> nC.ltWLP <br /> wWrw. <br /> .n <br /> t.w.w <br />' wwwP <br /> fpwP <br /> rir- � t 1RM w.w ilw <br />' t • 11G WIiw1�LP <br /> SIM <br /> b.P! <br /> x..n <br /> 1 300d® <br /> M�a� L taw 1Lw xPYP I,P. <br />' 11C tGtPdY <br /> tw..n <br /> x.n <br /> PrreP <br />' nwrs <br /> a taw ,LPP xwas xLw <br /> rr upturn <br /> t•.n <br /> Pesam <br /> �oxawe tnw mr <br /> xPmm <br /> �•° tuP aam i <br /> I <br /> L 14� �Jj <br /> 455 RESERVATION ROAD, SUITE G • MARINA, CA 93933 • (408) 883-0123 • FAX (408) 883-0122 <br />' recycled paper <br /> QC-LCS <br />