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Sequoia <br />404 N Wiget Lane <br />Walnut Creek c 94598 <br />(925) 988 &9600 <br />Analytical <br />FAX (925) 988-9673 <br />wwwse4uota)abs <br />Gettler Ryan, Inc - Dublin PIojCU Chevron <br />6747 Sierra Court Suite J Project Number Chevron # 9-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 25 -Jul -00 10 44 <br />Notes and Definitions <br />A-01 Sample contains 2-butanone (100ppb) and tetrahydrofuran by TIC (92ppb) <br />A-01 a Sample contains 2-butdnone (I I00ppb) and tetrahydrofuran by TIG (700ppb) <br />A-Olb Sample contains 2-butanone (370ppb) and tetrahydrofuran (TIC=124ppb) <br />P-02 Chromatogram Pattern Gasohne C6 -C 12 + Unidentified Hydrocarbons <C6 <br />P-04 Chromatogram Pattern Gasoline C6 -C12 + Unidentified Hydrocarbons C6 -C12 <br />S-04 The surrogate recovery for this sample is outside of established control limits due to a sample matrix effect <br />DET Analyte DETECTED <br />ND Analyte NOT DETECTED at or above the reporting limit <br />NR Not Reported <br />dry Sample reaults reported on a dry weight basis <br />RPD Relative Percent Difference <br />V <br />Sequoia Analytical - Walnut Creek The results in this report apply to the samples analyzed in accordance with the chair, <br />custody document This analytical report must be reproduced in its entire <br />Page 25 of 25 <br />RAS. <br />