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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(9Z5)988-9673 <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 /> Blaine Tech Services Client Prol ID Chevron 9-6171, 981118-K1 Sampled 11/18/68 <br /> 1680 Rogers Avenue Sample Descript MW-7 Received 11/19/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/24/98 <br /> Attention Christine Lillie Lab Number 9811D34-06 Reported 12j03j98 <br /> QC Batch Number GC112498802004A - <br /> Instrument ID HP4 <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 N D <br /> Benzene 050 <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> ND <br /> Xylenes (Total) 050 2 0 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 97 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41271 <br /> 1111411or <br /> ory <br /> 11111111"rolect Manager Page 6 <br />