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Sequoi& 404 N WiBet lane <br /> Walnut Creek CA 94598 <br /> 1q)4 (925)9%-96W <br /> Analytical www <br /> 98g-9G73 <br /> sequoequoiaidbs " <br /> S <br /> t <br /> Gettler Ryan,Inc -Dublin r Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#9-3232 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 13-Jun-01 09 07 <br /> Total Purgeable Hydrocarbons (C&C12), BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical -,Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Linut Notes <br /> Batch 1130001 -EPA 5030B PIT <br /> Blank(1E30001-BLKl) Prepared&Analyzed 31-May-OI <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 " <br /> Methyl text butyl ether ND 12 5 " <br /> Surrogate aa a-Trifluorotoluene 309 " 300 103 70-130 <br /> Blank(1E30001-BLK2) Prepared&Analyzed 01-Jun-01 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene _ _ ND 0 50 " <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 " <br /> Methyl tent-butyl ether ND 25 " <br /> Surrogate a a,a-Trifluorotoluem 319 300 106 70-130 <br /> Blank(1 E30001-BLK3) Prepared&Analyzed 02-Jun-0I <br /> ---Purgeable Hydrocarbons- -— - - ----ND-- 50=ug/1 ---- --- - -- - - <br /> Benzene ND 050 " <br />�- Toluene -- - - ---- -- - =ND 050 - `� -- — - - --- - --- - - <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tent-butyl ether ND 25 " <br /> - Surrogate a q a Trrfluorololuene 304 " 300 101 70-130 <br /> Blank(1E30001-BLK4) Prepared&Analyzed 04_Jun-01 <br /> Purgeable Hydrocarbons ND 50 ug/I <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a aa-Trifluorotoluene 308 300 103 70-130 <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the ch <br /> custody document This analytical report must be reproduced in its en <br /> Page 5 of 10 <br />