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Sequoia 4�N W8 <br /> Walnut Creek CAA 9859598 <br /> (925)988-9600 <br /> FAX <br /> Analytical alabsc <br /> www sequoila6s 73 <br /> qucoin <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#j 9-2033 Reported <br /> Dublin CA,94568 Project Manager Deannal, Harding 15-Jun-01 10 47 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> t <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units bevel Result %REC Linu s RPD Limit Notes <br /> ] <br /> Batch 1E25001 - EPA 5030B PIT <br /> Blank(IE25001-BLK1) Prepared&Analyzed 25-May-01 <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 50 a <br /> Methyl tort-butyl ether ND 25 " <br /> Surrogate a,a a-Tnfluorotoluene 302 300 101 70-130 <br /> Blank(1E25001-BLK2) Prepared&Analyzed 29-May-01 <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-butvi ether ND 2 5 " <br /> —Surrogate a as Tnfluorotoluene---- - — 33 d— ----- 30 0 — --111— 70-130- <br /> Blank <br /> 0-130 Blank(IE25001-BLK3) Prepared&Analyzed 30-May-01 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 5 <br /> Surrogate a a,a-Tnfluorotoluene 330 300 110 70-130 <br /> Blank(I)E25001-BLK4) Prepared&Analyzed 31-May-01 <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 Cert-butyl ether ND 25 " <br /> Surrogate a a,a-Trrfluorotoluene 309 300 103 70-130 <br /> Sequoia Analytical -Walnut Creek The results in this report apply to the samples analysed to accordance with the chain <br /> custody document This analytical report must be reproduced in its enure <br /> Page 11 of 24 <br /> r�i <br />