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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 4D- 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Gettler Ryan/Geostrategies µClient Prol ID " Chevron 9-6171, Stockton ~Sampled 02/24/97 <br /> 6747 Sierra Court Suite G Sample Descript MW-3 Received 02/25/97 <br /> Dublin, CA 94568 Matrix LIQUID - <br />= Analysis Method 8015Mod/8020 Analyzed 02/28/97 <br /> Attention Deanna Harding Lab Number_9702D34-03 _ Reported 03JO5197 <br /> OC Batch Number Gt022897BTEX06A <br /> Instrument ID GCHP6 <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 SO 300 <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 N D <br /> Toluene 0 5o N D <br /> Ethyl BenzeneN D <br /> 0 50 <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Unidentified HC <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 78 <br /> 0 <br /> knalytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA AN LYTICAL - ELAP #1210 <br /> Z <br /> A regory <br />�r Manager Page 3 <br />