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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> . a 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 StnkeT Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 931 0100 <br /> Blaine Tech Services Client Prol ID Shell Stockton/970131-Z1 Sampled 01/31/97 <br /> 1680 Rogers Avenue Sample Descript MW-3 Received 02/03/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 02/10/97 <br /> Attention Fran Thie Lab Number 9702115-05 Reported 02/13197 <br /> QC Batch Number GCO20697STEX02A <br /> Instrument ID GCHP02 <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 <br /> Benzene 050 N D <br /> Toluene 050 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 /> Trlfluorotoluene 70 130 87 <br /> Analytes reported as N D re not present above the stated limit of detection <br /> S AL ICAL - ELAP #1210 <br /> ggy Penner <br /> rolect Manager Page 5 <br />