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404 N Wiget Lane <br /> Sequoia Walnut Creek C94598 <br /> (925)9888 9600 <br /> FAX(925)988%73 <br /> Analyticalvv^v sequoialabs com <br /> Gettler Ryan Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron# 9-8632 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 16-Aug-01 08 08 <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 1 B01003- EPA 5030B PIT <br /> Matrix Spike(1H01003-MS1) Source W107521-02 Prepared&Analyzed 01-Aug-01 <br /> Benzene 101 050 ug/l 200 ND 505 70-130 Q-01 <br /> Toluene 167 050 200 ND 83 5 70-130 <br /> Ethylbenzene 15 9 050 200 ND 795 70-130 <br /> Xylenes(total) 534 050 600 ND 890 70-130 <br /> Surrogate a,a a-Trifluorotoluene 266 300 887 70-130 <br /> Matrix Spike Dup(1H0)003-MSD1) Source W107521-02 Prepared&Analyzed 01-Aug-01 <br /> Benzene 190 050 ugll 200 ND 900 70-130 562 20 Q-07 <br /> Toluene 183 050 200 ND 9t 5 70-130 9 14 20 <br /> Ethylhenzene 183 050 200 ND 91 5 70-130 140 20 <br /> Xylenes(total) 573 050 600 ND 955 70-130 705 20 <br /> Surrogate a a a-Triuorotoluene 283 300 943 70-130 • <br /> Sequoia Analytical - Walnut Creek The results in this report apply to the samples analyzed in accordance with the chjK <br /> custody document 77ns analytical report must be reproduced in its en <br /> Page 9 of 14 <br />