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Yl � <br /> Sequoia CA 404 lane <br /> Walnut Creek CA 94598 <br /> (925)988-9600 <br /> FA <br /> Analytical - X requo 988-9673 <br /> www sequolalabs coin <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#9-6171 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 12-Jun-01 07 52 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Repotting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Li ruts RPD Lunn Notes <br /> Batch 1E31003-EPA 5030B PIT <br /> LCS(1E31003-BS2) Prepared&Analyzed 02-Jun-01 <br /> Benzene 232 0 50 ugll 200 116 70-130 <br /> Toluene 189 0 50 200 945 70-130 <br /> Ethylbenzene 19 6 050 200 980 70-130 <br /> Xylenes(total) 582 0 50 600 97 0 70-130 <br /> Surrogate a q a-Tnfluorotoluene 290 300 967 70-130 <br /> LCS(iE31003-BS3) Prepared&Analyzed 04-Jun-01 <br /> Benzene 203 050 ug/1 200 102 70-130 <br /> Toluene 190 050 200 950 70-130 <br /> Ethylbenzene 202 0 50 200 101 70-130 <br /> Xylenes(total) 583 050 600 97 2 70-130 <br /> ate a a a-Tnfluorotoluene 291 300 970 70-130 <br /> LCS Dup (1E31003-BSD1) Prepared&Analyzed 31-May-01 <br /> Benzene 244 0 50 ug/1 200 122 70-130 13 1 20 <br /> Toluene 194 0 50 200 970 70-130 693 20 <br /> Ethylbenzene 190 0 50 200 950 70-130 267 20 <br /> Xylenes(total) 595 0 50 600 992 70-130 768 20 <br /> Surrogate a a a-Tnfluorootaluene 290 300 967 70-130 <br /> Ola Analytical-Walnut Creek The results in this report apply to the samples analyzed to accordance with the chain of <br /> custody document Thus analytical report must be reproduced to its entirety <br /> Page 9 of 13 <br /> XD <br />