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f Sequoia 680 Chesapeake Drove 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 B Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Blaine Tech Services Client Proj ID Shell Tracy/970207-1-13 Sampled 02/07/97 <br /> 1680 Rogers Avenue Sample Descript DUP 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 9702579-04 Reported 02f25197 <br /> OC Batch Number GCO21897BTEX02A <br /> Instrument ID GCHP2 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 1000 N D <br /> Methyl t-Butyl Ether 50 3600 <br /> Benzene 10 N D <br /> Toluene 10 N D <br /> Ethyl Benzene 10 N D <br /> Xylenes (Total) 10 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 98 <br /> Analytes re arted as N D were not present above the stated limit of detection <br /> S OI ANALYTICAL - ELAP #1210 <br /> r <br /> y Penner <br /> Project Manager Page 4 <br />