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404 N Wiget Lane <br /> Sequoia Walnut Creek. 94598 <br /> (925)988-9X00 <br /> 4 F"(925)988-9673 <br /> Analytical wv.,"seq"°land*`om <br /> ler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#9-2033 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 29-Jun-0O 16 29 <br /> Diesel Hydrocarbons (C9-C24) 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 OF12012-EPA 3510B <br /> Blank(OF12012-BLKI) Prepared 12-Jun-00 Analyzed 15-Jun-00 <br /> Diesel Range Hydrocarbons ND 50 ug/i <br /> Surrogate n-Pemacosane 38 0 333 114 50-150 <br /> LCS(OF12012-BS1) Prepared 12-Jun-00 Analyzed 14-Jun-00 <br /> Diesel Range Hydrocarbons 373 50 ug/I 500 746 60-140 <br /> Surrogate n-Pentacosane 197 333 592 50-150 <br /> LCS Dup (OF12012-BSDi) Prepared 12-Jun-00 Analyzed 14-Jun-00 <br /> Diesel Range Hydrocarbons 364 50 ugA 500 728 60-140 244 50 <br /> Surrogale n-Pentacosane 230 333 691 50-150 <br /> Sequoia Analytical-Walnut Creek The results in tins report apply to the samples analyred in accordance with the chain of <br /> custody document Vats analytical report must be reproduced in its entirety <br /> Page 12 of 21 <br />