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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N W1get Lane Walnut Creek,CA 94598 (925)988-96)0 FAX(925)988-%73 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 `916)921-9600 FAX(916 )921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 707 792-1865 FAX 707)792-0342 <br /> Gettler RyanGeostrategies Client Prol 10 Unocal Former Facility#0187 =Sampled 08/17/98 <br /> 6747 Sierra Court Suite J Sample Descript U-1 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- 9808A40-02 Reported 09/20198 , <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 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes {Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 75 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br />_*,Zxa� <br /> Tod Granicher <br /> Project Manager Page 2 <br />