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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 /> Blaine Tech Services Client Prol ID Shell Stockton/970131-Z1 Sampled 01/31/97 „ <br /> 1680 Rogers Avenue Sample Descript VEW-4 Received 02/03/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 02/07/97 <br /> ,'Attention Fran Thie Lab Number 9702115-11 _ Reported 02j13j97 <br /> OC Batch Number GCO20597BTEX17B _ <br /> Instrument 1D GCHP17 <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 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 94 <br />• <br /> Analytes repo ed s N D were not present above the stated limit of detection <br /> S IA NALYTICAL - ELAP #1210 <br /> i <br /> Penner <br /> Page 12 <br /> Project Manager <br />