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Sequoia 680 Chesapeake Dnve Redwood City, CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 404 N eget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988-9673 <br /> �Ily Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Gettler Ryan/Geostrate-gies Client Prol ID Chevron 9-6171, Stockton Sampled 11/12/96 <br /> 6747 Sierra Court Suite G Sample Descript MW-7 Received 11/12/96 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/19/96 <br /> Attention Deanna Harding Lab Number 9611.619-02 Reported 11J20f96 <br /> QC Batch Number GC111996BTEX17A - <br /> Instrument ID GCHP17 <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 51 <br /> Methyl t-Butyl Ether 25 D <br /> Benzene <br /> Toluene . " . 0.50 - - 7 4 <br /> Ethyl Benzene "• - -' 060 - -- - - 4 9 <br /> Xylenes (Total) •-_ _ 0.50 - - - -• ... 073 <br /> Chromatogram Pattern ... 050 -- - -- - 3 3 <br /> -- - .. .. ... ... Gas <br /> Surrogates Control Limits% °,6 Reco�e <br /> Trifluorotoluene 70 130 gg <br /> Anafytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> MWG egory <br /> P Manager Page 4 <br />