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I <br /> aC98 AN EN Inc <br /> Analytical & Environmental Chemistry <br /> LABORATORY CONTROL SAMPLES <br /> Method: VOLATILE AROMATICS AND TPH AS GASOLINE BY GC/PID <br /> Date Aquired: 07/01/99 <br /> Expressed as mass(ng). <br /> is <br /> Amount Amount LCS %Rec <br /> t Analyte Added Found Rec Limits <br /> Methyl-tert-butyl Ether 40 38. 94% 80-130 <br /> Fi <br /> Benzene 20. 19, 94% 85-120 <br /> Toluene 20. 19. 95% 85-120 <br /> Ethylbenzene 20. 19. 97% 85-120 <br /> m,p Xylenes 20. 19. 96% 85-120 <br /> o-X lene 20. 20. 98/ <br /> 85-120 <br /> TPH-Gasoline 1,250. 1,141. 91% 65-140 <br /> Surrogates LSC-8020M Batch ID: 0701-04 <br /> a,a,a-TFT-FID 94% 60-130 <br /> 4-BFB-FID 96% 55-150 <br /> 4-BFB-PID 107% 65-140 <br /> Surrogates LSC-GASOLINE Batch ID: 0701-05 <br /> a,a,a-TFT-FID 85% 60-130 <br /> 4-BFB-FID 109% 55-150 <br /> 4-BFB-PID 108% 65-140 <br /> *W Values outside of QC limits. <br /> LCS Recovery: 0 out of 7 outside limits. <br /> nt^me,-0a.6 <br /> J <br /> PPtlPOPO " # <br /> saoe•PP <br /> l mOm h III !h, <br /> ,PPPPPeJ" <br /> i <br /> f •000000. Y`• l <br /> tb <br /> it •wPPOP I - I <br /> { 'P•PPP� ;llL._yr.d_�����fl�i.���n.PP ,..o• -- — ,� <br /> 455 RESERVATION ROAD, SUITE G • MARINA, CA 93933 • (831) 883-0123 • FAX(831) 883-0122 <br /> �:�'recycled passer QC-LCS <br /> I� i <br />