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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 404 N Woget lane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9673 <br /> 41)4l) Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Blaine Tech Services Client Prol ID Shell Stockton/970206-H1 Sampled 02/06/97 <br /> 1680 Rogers Avenue Sample Descript MW-2 Received 02/10/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 02/18/97 <br /> Attention Fran Thie Lab Number 9702584-01 Reported 02J21197 <br /> DC Batch Number GCO21897BTEX02A <br /> nstrument ID GCHP2 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Petection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 420 <br /> Methyl t-Butyl Ether 25 20 <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 0 63 <br /> Chromatogram Pattern C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 104 <br />• <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQU NALYTICAL - ELAP #1210 <br /> Pegg enner <br /> Project Manager Page <br />