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404 N Wlget lane <br />Walnut Creek, reek, -9600 <br />94598 <br />(925) 98 988-9f+00 <br />FAX (925) 988-%73 <br />Analytical ww""'se'`o <br />Gettler Ryan. Inc - Dublin Project 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 -0I Sample contains 2-butanone (I00ppb) and tetrahydrofuran by TIC (92ppb) <br />A -01a Sample contains 2-butanone (I 100ppb) and tetrahydrofuran by TIC (700ppb) <br />A-0lb Sample contains 2-butanone (370ppb) and tetrahydroturan (TIC-124ppb) <br />P-02 Chromatogram Pattern Gasohne C6 -C 12 + Unidentified Hvdrocarbons <C6 <br />P-04 Chromatogram Pattern Gasoline C6 -C12 + Unidentified Hydrocarbons C6 -C12 <br />S-04 The surrogate recovery for flus sample is outside of estabhshed 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 results reported on a dry weight basis <br />RPD Relative Percent Difference <br />Setpiota Analyhcal - Walnut <br />The results in this report apply to the samples analyzed in accordarxe with the <br />custody document Tins anatyhcal report must be reproduced in its <br />Page 25 of 25 <br />