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Sequoia 680 Chesapeake Dnvc Redwood City CA 94063 (650) 364 9600 FAX (650)364 9233 <br /> 404 N Wiget lane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9,673 <br /> Analytical 819 Stinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX M6)921 oi00 <br /> 1 Gettler Ryanjdeosirategies Client Proi ID- -Chevron 9-6171, Stockton - - - Sampled--11-/10/97 <br /> 16747 Sierra Court Suite G Sample Descript MW-7 Received 11/11/97 - <br /> 1 Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/20/97 <br /> 1 Attention Deanna Harding________ Lab Number 9711618-02 Re acted 11 _21 97 <br /> - - <br /> -12 <br /> Instrument ID GCHP2 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas ... 50 ... .... ...... 1700 <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes {Total} 050 N D <br /> Chromatogram Pattern <br /> Unidentified HC .... ........ .... ........ ....... C6-C12 <br /> Discrete Peaks ........ .... .... ... ... ....... C6 <br /> Surrogates Control Limits % % Recovery <br /> Tri luorotoluene 70 130 74 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANAL ICAL - ELAP #1894 <br /> re ory <br /> ct Manager Page 3 <br /> i <br />