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Sequoia 1551 industrial Road <br /> SaR Carlos, GA 940 70-41 1 f1 <br /> 41 (650) Z3Z-%00 <br /> qQ5)- Analytical FAX(650) Z32-9612 <br /> I885 <br /> uoia-Morgan Hill Project: Blaine/CHEVRON Sampled: 8/30/99 <br /> Jarvis Drive Project Number: 9090035/Chevron 9-0557 Received: 9/9/99 <br /> gan Hill,CA 95037 Project Manager: Kayvan Kim ai Reported: 9/15/99 <br /> Total.Purgeable'Hydrocarbons(C6-Cl2),BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical-San Carlos <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte_ Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> Batch: 9090047 Date Prepared: 9/10/99 Extraction Method: EPA 50309 [P/T1 <br /> Blank 9090047-BLKI <br /> Purgeable Hydrocarbons as Gasoline 9110/99 ND ug/1 50.0 <br /> Benzene ND 0.500 <br /> Toluene ND 0.500 <br /> Ethylbenzene ND 0.500 <br /> Xylenes(total) ND 0.500 <br /> Methyl tett-butyl ether ND 5.00 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 11.0 70.0-130 110 <br /> LCS 9090047-BS1 <br /> Benzene 9/10/99 10.0 8.95 ug/l 70.0-130 89.5 <br /> Toluene 10.0 8.77 70.0-130 87.7 <br /> Ethylbenzene 10.0 8.92 70.0-130 89.2 <br /> Xylenes(total) 30.0 26.7 70.0-130 89.0 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 9.96 70.0-130 99.6 <br /> qk- 9090047-BS2 <br /> Purgeable Hydrocarbons as Gasoline 9/10/99 250 280 ug/1 70.0-130 112 <br /> Surrogate: a,a,a-Trifluorotoluene " 10.0 9.37 It 70.0-130 93.7 <br /> Matrix Spike 9090047-MSI <br /> B=ene 9110/99 10.0 8.78 ug/l 60.0-140 <br /> Toluene 11 10.0 12.2 60.0-140 <br /> Ethylbenzene 10.0 9.01 60.0-140 <br /> Xylenes(total) 30.0 27.1 60.0-140 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 10.1 F, 70.0-130 101 <br /> Matrix Spike Dup 9090047-MSDI <br /> Benzene 9/11/99 10.0 9.21 ug/l 60.0-140 25.0 <br /> Toluene 1110.0 12.3 60.0-140 25.0 <br /> Ethylbenzene 10.0 9.35 60.0-140 25.0 <br /> Xylenes(total) 30.0 28.1 60.0-140 25.0 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 9.77 70.0-130 97.7 <br /> Batch: 9090049 Date Prepared: 9110199 Extraction Method: EPA 5030B 1P/T1 <br /> Blank 9090049-BLKI <br /> Purgeable Hydrocarbons as Gasoline 9/10/99 ND ugll 50.0 <br /> Benzene " ND " 0.500 <br /> Toluene it ND 0.500 <br /> Ethylbenzene ND 0.500 <br /> Xylenes(total) " ND " 0.500 <br /> uoia Analytical-San Carlos *Refer to end of report for text of notes and definitions, <br /> ,p� Page 12 of 15 <br />