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404 N WISet lane <br /> Walnut Creek CA 94598 <br /> Sequoia (925)988-9600 <br /> FAX(925)988-9673 <br /> Analytical _ www sequolalabscorn <br /> dw <br /> Gettler 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 15-Jun-01 10 47 <br /> Diesel Hydrocarbons (C9-C24) by DHS LUFT- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lrmrt Units Level Result %REC Lunrts RPD Limn Notes <br /> Batch 1E31005-EPA 3510B <br /> Blank QE31005-BLKI) Prepared 31-May-01 Analyzed 07-Jun-01 <br /> Diesel Range Hydrocarbons ND 50 u€a <br /> Surrogate n-Pentacosane 230 333 691 50-150 <br /> LCS(1E31005-BSI) Prepared 31-May-01 Analyzed 07-Jun-01 <br /> Diesel Range Hydrocarbons 421 50 ug/1 500 842 60-140 <br /> Surrogate n-Pentacosane 293 333 880 50-150 <br /> LCS Dup (1E31005-BSD1) Prepared 31-May-Ol Analyzed 08-Jun-01 <br /> Diesel Range Hydrocarbons 810 50 ug/1 500 162 60-140 135 50 Q-01 <br /> Surrogate n•Pentacosane 867 333 260 50.150 Q-01 <br /> uoia Analytical-Walnut Creek The results in thus report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced to its enurety <br /> Page 14 of 24 <br />