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' Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988%73 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> ■ nalytiCal <br /> Blaine Tech Services µ- Client Prol ID Shell Stockton/971202-1-1 Sampled 12/02/97 <br /> 1680 Rogers Avenue Sample Descnpt MW-10 Received 12/03/97 <br /> San Jose, CA 95112 Matrix LIQUID <br />_ Analysis MethodA8015Mod/8020 Analyzed 12/12/97 <br />—�� Attention Fran Thie l-ab Numlaer 9712360=12 _ Reported-12119197—r, <br /> OC Batch Number GC121297BTEX21A <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 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 81 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ICA - ELAP #1210 <br /> Peggy Penn <br /> IJ Project Manager Page 3 <br />