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Ci) <br /> Sequoia 680 Chesapeake Dnve Redwood City, CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wtget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical 819 Striker Avenue,Suite a Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> i <br /> Touchstone Developments Client Prol ID Chevron 9-2033, 2033-2 Sampled 10/09/96 <br /> P O Box 2554 Sample Descript A4 Received 10/10/96 <br /> Santa Rosa, CA 95405 Matrix SOLID Extracted 10/11/96 <br /> Analysis Method 8015Mod/8020 Analyzed 10/11/96 <br /> Attention Jeff Monroe Lab Number 9610612-04 Reported i OJ14196 <br /> DC Batch Number GC1 01 196BTEXEXA <br /> nstrument ID GCHP07 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 10 1 7 <br /> Methyl t-Butyl Ether 0 025 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 00061 <br /> Chromatogram Pattern <br /> Unidentified HC C9-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 120 <br /> 0 <br /> 0aiytes reported as N D were not present above the stated limit of detection <br />;E0001A ANALYTICAL - ELAP #1210 <br /> oliett <br /> Irolect Manager Page 4 <br />