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Sequoia 680 Chesapeake Dave Redwood City CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988-%00 FAX(510)988 9673 <br /> Analytical 819 Stnker Avenue,Suite B Sacramento CA 95834 (916) 92t 9600 FAX (916)921 0100 <br /> Blaine Tech Services Client Prol ID Shell Stockton/971202-1-1 Sampled 12/02/97 <br /> - 1680 Rogers Avenue Sample Descript MW-2 Received 12/03/97 <br /> San ,lose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 12/15/97 <br /> Attention Fran Thie Lab Number 9712358-04 Reported 12j19197 <br /> 6C Batch Number dC121597BTEX2IA <br /> Instrument ID GCHP21 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L u9/L <br /> TPPH as Gas 50 230 <br /> Methyl t-Butyl Ether 25 .. 170 <br /> Benzene . . . .. 050 17 <br /> Toluene .. 050 14 <br /> Ethyl Benzene 050 2 5 <br /> Xylenes (Total) .. 050 .. 13 <br /> Chromatogram Pattern ... C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 97 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQU41 A LYTICAL - ELAP #1210 <br /> eggy ner <br /> Project Manager Page 12 <br />