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4 , <br /> 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 /> foll>� <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)911-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> " Gather RyanZGeostrategies �-- -»- �Client Prot ID - Unocal 5886, 180137 85 Sampled 06/17/98^= <br /> 6747 Sierra Court Suite J Sample Descnpt MW-1 Received 06/17/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/29/98 <br /> y Attention Deanna Harding -Lab-Number 9806C26-02 _ _ _ Reported 07f09198 <br /> OC Batch Number GC062998802002A- <br /> Instrument ID HP-2 <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 050 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 107 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> T ranicher <br /> PjWt Manager Page 4 <br />