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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 /> Analytical 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Envlros Client Prol ID Shell 2575 Country Club, STK Sampled 01/28/97 <br /> 270 Perkins Ave Sample Descnpt MW-7-11 5 Received 01�31/97 <br /> 29/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 01 <br /> Analysis Method 8015Mod/8020 Analyzed 02/03/97 <br /> Attention_ Joe Neely Lab Number 9701 G29-02 - Reported 02104197 <br /> DC Batch Number GC013197BTEXEXA <br /> nstrument 1D GCHP22 <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 N D <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 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 93 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Gregory <br /> ct Manager Page 2 <br />