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a ► <br /> 404 N Wiget Lane <br /> ` Sequoia Walnut Creek CA <br /> 94598 <br /> (925)988-9600-9600 <br /> FAX(925)988-9673 <br /> Analytical www sequolalabs com <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 31-Jul-01 07 59 <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 Notes <br /> Batch 1G20003-EPA 5030B PIT <br /> Matrix Spike Dup(1G20003-MSD1) Source W107262-09 Prepared 20-Jul-01 Analyzed 25-Jul-01 <br /> Benzene 159 050 ug/l 200 ND 795 70-130 120 20 <br /> Toluene 175 050 200 ND 87 5 70-130 528 20 <br /> Ethylbenzene 183 050 200 ND 915 70-130 13 4 20 <br /> Xylenes(total) 547 050 600 ND 91 2 70-130 372 20 <br /> Surrogate a a a-Triuorotoluene 274 300 913 70-130 <br /> i <br /> �cia Analytical-Walnut Creek 77ie results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 12 of 18 <br />