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f <br /> 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9Z33 <br /> Sequoia 404 N Wlget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1.865 FAX(707)792-0342 <br /> --_ <br /> Gettler Ryan/Geostrategies Client Prol ID Chevron 9-6171, Stockton Sam <br /> Received 08/18/98 <br /> e sied 0818%8 <br /> 6747 Sierra Court Suite J Sample Oescript MW-6 <br /> Dublin, CA 94568 Matrix LIQUID ed <br /> Analysis Method 8015Mod/8020 Analyzed 08/31/ /98 <br /> y <br /> Attention Deanna Harding _ _ __ Lab Number _9808824-06 ____ _____ -_Reported, 0910418_ <br /> QC Batch Number GCO83198802009A <br /> Instrument!D HP9 <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 •• -- -- - 110 <br /> Methyl t-Butyl Ether . . . 2.5 .. .. . .. 17 <br /> Benzene 050 N D <br /> 0 50 ND <br /> Toluene <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 <br /> Chromatogram Pattern >C8 <br /> Unidentified HC - ... .. .. . ......--- ... ... <br /> Surrogates Control Limits % % Recovery <br /> Trrfluorotoluene 70 130 107 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> 0 <br /> 0oliect Manager Page s <br />