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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget 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)792-1865 FAX(707)792-0342 <br /> e <br /> Gettler Ryan%Geostrategles Client Prof ID Unocal Former Facility#0187 _ Sampled 08/17/98 µ= <br /> -, 6747 Sierra CCourt Suite J Sample Descript U-7 Received 08/17/98 <br /> Dublin, CA 94568 Matrix LIQUID _ <br /> _ Analysis Method 8015Mod/8020 Analyzed 08/28/98 <br /> Attention Deanna Harding _ Lab Number 9808A40-08 - _ _ __ _ _Reported 09/20/98 <br /> Instrument ID HP5 <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 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 75 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> Tod Granlcher <br /> Project Manager Page a <br />