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404 N Wtget Lane <br /> Sequoia Walnut Creek CA 94598 <br /> (925)988-9600 <br /> -9600 <br /> Analytical FAX(925)988-9673 <br /> a4- ) C� www sequolalahs co <br /> Gettler Ryall,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron t!9-9840 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 06-Jun-01 08 21 <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 Lunt Notes <br /> Batch 1E29003-EPA 5030B PIT <br /> Matrix Spike(1E29003-MSI) Source W105418-04 Prepared&Analyzed 29-May-01 <br /> Benzene 183 0 50 ug/I 200 ND 915 70-130 <br /> Toluene 195 0 50 200 ND 975 70-130 <br /> Ethylbenzene 20 4 0 50 200 ND 102 70-130 <br /> Xylenes(total) 588 0 50 600 ND 98 0 70-130 <br /> Surrogate aqa-Tnfluorotoluene 281 360 93 7 70.130 <br /> Matnx Spike Dup (1E29003-MSD1) Source W105418-04 Prepared&Analyzed 29-May-01 <br /> Benzene 22 2 030 ug/1 200 ND 111 70-130 193 20 <br /> Toluene 200 0 50 200 ND 100 70-130 253 20 <br /> Ethylbenzene 19 4 0 50 200 ND 970 70-130 503 20 <br /> Xylenes(total) 613 0 50 600 ND 102 70-130 4 16 20 <br /> Surrogate a a a-Tn,Jluorotoluene 282 300 940 70.130 <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chat <br /> custody document This analytical report must be reproduced in its enta <br /> Page 7 of 12 <br />