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404 N Wlget Lane <br /> ~ Walnut Geek,CA 94598 <br /> Sequoia (925)988-96W <br /> FAX(925)988-9673 <br /> Analytical www�uoWabs com <br /> ttler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#0187 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 22-Jun-00 07 41 <br /> Total P1lrgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creels <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lrmnt Units Level Result %REC Lints RPD Limit Notes <br /> Batch OF29006- EPA 5030B (PIT) <br /> Blank(OF19006-BLK1) Prepared&Analyzed 19-Jun-00 <br /> Purgeable Hydrocarbons ND 50 ugll <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 arta-Tnfluoratoluene 306 300 101 70-130 <br /> LCS (OF19006-BSI) Prepared&Analyzed 19-Jun-00 <br /> Benzene 203 050 ug+1 200 101 70-130 <br /> Toluene 207 05G 200 104 70-130 <br /> ELhylbenzene 209 050 200 104 70-130 <br /> Wes(total) 607 050 600 101 70-130 <br /> Surrogate aaa-Tnfluorotoluene 281 300 93 7 70-130 <br /> Matrix Spike(OF19006-MSI) Source W006224-03 Prepared&Analyzed 19-Jun-00 <br /> Benzene 195 050 ugP1 200 ND 975 70-130 <br /> Toluene 197 050 200 ND 985 70.130 <br /> Ethylbenzene 200 050 200 ND 100 70-130 <br /> Xylenes(total) 575 050 " 600 ND 958 70-130 <br /> Surrogate acza-Tnfluorotoluene 277 300 913 70-130 <br /> Matrix Spike Dup (OF19006-MSDI) Source W006224-03 Prepared&Analyzed 19-Jun-00 <br /> Benzene 19 7 050 ugI 200 ND 985 70-130 102 20 <br /> Toluene 201 050 200 ND 101 70-130 201 20 <br /> Ethylbenzene 203 050 200 ND 101 70-130 149 20 <br /> Xylenes(total) 588 0 50 600 ND 980 70-130 224 20 <br /> Surrogate aaa-Tnfluorotoluene 178 300 927 70.130 <br /> �uola Analytical- Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document.Thu analytical report must he reproduced in its entirety <br /> Page 9 of 12 <br />