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ID <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek, CA 94598 (510) 988 9600 FAX(510)988_9673 <br /> frrl,l� Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> r <br /> - Gettler Ryan/Geostrategles Client Prof ID Chevron 9-6171, Stockton Sampled 11/12/96 <br /> 6747 Sierra Court Suite G Sample Descript MW-3 Received 11/12/96 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/15/96 <br /> _ Attention Deanna Harding Lab Number 9611619-03 _ Reported 11 J20J96 <br /> QC Batch Number GC111596BTEX20A -- - _ - - - - - <br /> Instrument ID GCHP20 <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 <br /> Methyl t-Butyl Ether - 25 180N D <br /> Benzene <br /> Toluene o 50 D <br /> Ethyl Benzene - -- -- - 0 50 - -- - 08 <br /> D <br /> Xylenes (Total) <br /> Pattern 050 N D <br /> Discrete Peaks <br /> C7-C8 <br /> Surrogates Control Limits % % Recovery <br /> Tritluorotoluene 70 130 88 <br /> I <br /> Analytes reported as N D were not present above the stated lirnit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br />�G egory <br /> ct Manager <br /> Page 5 <br />