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Sequoia 404a Wlget <br /> Walnut Geek, Lam <br /> CA 945% <br /> {925)98&9600 <br /> 41WAnalytical FAX(925)988-9673 <br /> FAX <br /> Gettler Ryan,Inc.-Dublin Project: Chevron <br /> 6747 Sierra Court Suite J Project Number: Chevron#9-8264 Reported: <br /> Dublin CA,94568 Project Manager: Deanna L.Harding 15-Jun-00 11:50 <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 Limits RPD Limit Nates <br /> Batch OE30001-EPA 5030B [PIT] <br /> Blank(OE30001-BLKI) Prepared&Analyzed: 30-May-00 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 0,50 <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 <br /> Xylenes(total) ND 0.50 " <br /> Mdhyl Cert-butyl ether ND 2.5 " <br /> Surrogate:aaa-Trifluorotoluene 31.5 30.0 105 70-130 <br /> LCS(OE30001-BSI) Prepared&Analyzed:30-May-00 <br /> Benzene 18.0 0.50 ug/l 20.0 90.0 70-130 <br /> Toluene 19.8 0.50 20.0 99.0 70-130 <br /> Ethylbenzene 20.3 0.50 " 20.0 101 70-130 <br /> Xylenes(total) 64.2 0.50 60.0 107 70-130 �J <br /> Surrogate:aaa-Trifluorotoluene 268 30.0 89.3 70-130 <br /> Matrix Spike(OE30001-MSI) Source:W005571-02 Prepared&Analyzed:30-May-00 <br /> Benzene 16.3 0.50 U84 20.0 ND 81.5 70-130 <br /> Tole 17.8 0.50 20.0 ND 89.0 70-130 <br /> Ethylbenzene 18.5 0,50 20.0 ND 92.5 70-130 <br /> Xylenes(total) 57.0 0.50 " 60.0 ND 95.0 70-130 <br /> Surrogate:aaa-Trifluorotoluem 26.9 30.0 89.7 70-130 <br /> Matrix Spike Dup(OE30001-MSD1) Source:W005571-02 Prepared&Analyzed:30-May-00 <br /> Beruene 15.9 0.50 ug/l 20.0 ND 79.5 70-130 2.48 20 <br /> Toluene 17.4 0.50 20.0 ND 87.0 70-130 2,27 20 <br /> Ethylbcnzene 19.7 0.50 20.0 ND 98.5 70-130 6.28 20 <br /> xylenes(tow) 56.2 0.50 60.0 ND 93.7 70-130 1.41 20 <br /> Surrogate:aaa-Trifluorotoluene 268 " 30.0 89.3 70.130 <br /> Sequoia Analytical-Walnut Creels The resulls in this report apply to the samples analyzed in accordance with the chain of a <br /> custody documey.This analytical report must he reproduced in its enfirety. <br /> Page 10 of 23 <br />