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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> ID 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988-%00 FAX(510)988 9673 <br /> Analytical 8 t 9 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(9t6)921-0100 <br /> Blaine Tech Services Client Proj Ib Shell Stockton/971121-G2 Sampled 11/21/97 <br /> 1680 Rogers Avenue Sample Descript VEW-1 Received 11/24/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 12/05/97 <br /> Attention Fran Thie Lab Number 9711 E94-05 Reported 01J14198 „ <br /> QC Batch Number GC120597BTEX21 A <br /> Instrument ID GCHP21 <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 .. 150 <br /> Methyl t-Butyl Ether 25 .. 29 <br /> Benzene 050 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 080 <br /> Chromatogram Pattern C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 102 <br /> 0 <br /> Anaiytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA L ICA - ELAP #1210 <br /> Peggy Penner <br /> Project Manager Page 15 <br />