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• 1551 Indusinal Road <br /> Sequoia San Carlos CA 94070 <br /> a- ) A (650)232-9600 <br /> Analytical - -� - _ - - - - - _ _- _ - - - - --- _ t - FAX(650)232-9612 <br /> www sequoialabs oom <br /> Gettler-Ryan/GeostratePIMS ) Project Tosco(1) <br /> 6747 Sierra Court,Suite J Project Number Tosco#5886,Stockton,CA Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 12/06/01 l 6 51 <br /> Total Purgeable.Hydrocarbon-(C4-C12)Nby EPA_S015M_and BTEX/MTBE by EPA 8021B. -.-. <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte_ Result Luno Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-3(L]11140-04)Water Sampled 11/20/011205 Received 11/20/011900 <br /> ---Purgeable Hydrocarbons as Gasoline= -=tom.rND� —=50— ug/l.r-.1--.-1120003.r-12103101—= 12103101r EPA 8021B -_--_- <br /> Benzene ND 050 " <br /> Toluene ND 050 " " ^ <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 <br /> Methyl tent-butyl ether 5800 500 100 12/04/01 " M-04 <br /> Surrogate a,a,a-Trifluorotoluene 951 % 70-130 12103101 " <br /> MW4D(L111140-05)Water Sampled 11/20/010915 Received 11/20/01 19 00 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/l 1 1120002 12/03/01 12/04/01 EPA 8021B <br /> Benzene ND 050 <br /> Toluene ND 050 " ^ <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 ^ ^ <br /> Methyl tert-butyl ether ND 50 ^ ^ <br /> Surrogate a,a,a-Trifluorotoluene 102% 70-130 . <br /> MW4S(L111140-06)Water Sampled 11/20/0108.55 Received* 11/20/01 19 00 _ <br /> Purgeable Hydrocarbons as Gasoline ND 50 ugA 1 1120003 12/03/01 12/03/01 EPA 8021B <br /> Benzene ND 050 n " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 ^ <br /> Methyl tert-butyl ether ND 50 " <br /> Surrogate a a,a-Triuorotoluene 777% 70-130 " <br /> , 4 <br /> Sequoia Analytical - San Carlos The results in this report apply to the samples anabzed in accordance hath the chain OJW <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 3 of 23 <br />