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41) <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> 1WAnalytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> ko <br /> Touchstone Developments Client Pro! ID Chevron 9-2033, 2033-2 Sampled 10/09/96 <br /> P O Box 2554 Sample Descript OXB4-10 5 Received 10/10/96 <br /> Santa Rosa, CA 95405 Matrix SOLID Extracted 10/14/96 <br /> Analysis Method 8015Mod/8020 Analyzed 10/15/96 <br /> Attention Jeff Monroe Lab Number 9610708-09 Reported 1OJ18196 <br />)C Batch Number GC101496BTEXEXB <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 1 0 14 <br /> Methyl t-Butyl Ether 0 025 038 <br /> Benzene 00050 0 012 <br /> Toluene 00060 00062 <br /> Ethyl Benzene 00050 00057 <br /> Xylenes (Total) 00050 00080 <br /> Chromatogram Pattern <br /> Unidentified HC C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 108 <br /> • <br /> analytes reported as N D were not present above the stated limit of detection <br />;EQUOIA ANALYTICAL - ELAP #1210 <br />'e ollett <br />'roject Manager Page 11 <br />