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680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> Sequoia 404 N W1get Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988 9673 <br /> 6) 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)421-Oloo <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client Prol ID - Shell 620 W Charter Way Sampled 08/11/68- _ <br /> 1680 Rogers Avenue Sample Descript MW-6 Received 08/14/98 <br /> San ,lose, CA 95112 Matrix LIQUID _ <br /> Analysis Method 8015Mod/8020 Analyzed 08/27/98 <br /> Attention_Fran Thie _ _ _ __ Lab Number 9808909-06_ _ _ _ _ __ -Reported 09J25J98_ <br />—QC Batch°Number=GC082798BTEX05A <br /> Instrument !D GCHPS <br /> Total Purgeable 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 -- 26 <br /> Benzene 050 N D <br /> Toluene 050 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 76 <br /> Analytes reported as N D were not present above the stated limit Of detection <br /> SEQUOIA,ANALYTICAL - ELAP #1271 <br /> Peggy Penn <br /> Project Manager Page 6 <br />