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404 N Wiget Lane <br /> Walnut Creek CA 94598 <br /> Sequoia (925)988-9600 <br /> FAX(925)988-9673 <br /> Analytical wwwsequolalabs coin <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#9-1848 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 02-Jun-00 09 21 <br /> Total Purgeable Hydrocarbons (C6-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 Lints RPD Limit Notes <br /> Batch OE26002-EPA 50308 [PIT] <br /> Blank(OE26002-BLKI) Prepared&Analyzed 26-May-00 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 0 50 " <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate aaa-Tnfluorotoluene 292 300 973 70-130 <br /> LCS(OE26002-BSI) Prepared&Analyzed 26-May-00 <br /> Benzene 166 050 ug/1 200 83 0 70-130 <br /> Toluene 177 0 50 200 88 5 70-130 <br /> E enzene 185 050 200 92 5 70-130 <br /> �{ (total) 553 050 600 922 70-130 <br /> Surrogate 4,qa-Tnfluorwoluene 295 300 983 70-130 <br /> Matrix Spike(01x26002-MSI) Source W00550I-02 Prepared&Analyzed 26-May-00 <br /> Benzene 173 0 50 ug/l 200 ND 865 70-130 <br /> Toluene 180 050 " 200 ND 900 70-130 <br /> Ethylbenzene 183 050 200 ND 915 70-130 <br /> Xylenes(total) 555 050 600 ND 925 70-130 <br /> Surrogate Adxa-YhI luorotaluene 297 300 990 70.130 <br /> Matnx Spike Dup(OE26002-MSD1) Source W005501-02 Prepared&Analyzed 26-May-00 <br /> Benzene <br /> 177 050 ug/1 200 ND 985 70-130 229 20 <br /> Toluene 186 050 200 ND 930 70-130 328 20 <br /> Ethylbenzene 189 0 50 200 ND 945 70.130 3 23 20 <br /> Xylenes(total) 568 0 50 600 ND 947 70-130 232 20 <br /> Surrogate a,aa.Trr luorotoluene 310 300 103 70-130 <br /> la Analytical-Walnut Creek The results in this report apply to the samples andwed in accordance with the chain of <br /> Sig custody document This analytical report must be reproduced in its entirety <br /> Page 4 of 6 <br /> l <br />