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Sequoia 680 Chesapeake Dave Redwood Cry, 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 /> NCOAnalytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Enviros Client Prol ID- -Shell 6131 Pacific, Stockton r-Sampled 07/02/97 <br /> 270 Perkins Ave Sample Descript SB-1-65 Received 07/03/97 <br /> G Sonoma, CA 95476 Matrix SOLID Extracted 07/11/97 <br /> I Analysis Method 8015Mod/8020 Analyzed 07/11/97 <br /> Attentlon Joe Neem _ Lab Number 9707310-01 _ _ _ _ _ Reported 0_7118197 <br /> OC Batch Number GC071197BTEXEXA <br /> Instrument 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 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 (notal) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 82 <br /> 4-Bromofluorobenzene 60 140 95 <br /> i <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> F <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> 6regory <br /> ct Manager Page t <br />