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CHROMALAB, INC. <br /> Environmerital Services(SDB) <br /> May 28 , 1998 Submission #• 9805267 <br /> ERM-WEST WALNUT CREEK <br /> Atten James Ackerman <br />' Project UP-STOCKTON Proaect#: 8187 25 <br /> Received. May 18, 1998 <br />' re. Matrix spike report for Gasoline BTEX analysis <br /> Method. SW846 8020A Nov 1990 / 8015Mod <br /> Matrix- SOIL <br /> Lab Run# 12855 Instrument: 3400-2 Analyzed: May 21., 1998 <br /> Spiked <br />' Sample Spike Amt Amt Found Spike Recov % <br /> Amount MS MSD MS MSD MS MSD Control $ RPD <br /> Analyte (MCF/K m K m R $ $ Limits RPD Lim <br />' GASOLINE N D 0 480 0 .492 0 .495 0 . 0086 103 1 76 65-135 193 35 <br /> BENZENE N.D. 0 . 0960 0 0984 0 . 0705 0 . 0031 73 .4 3 .20 65-135 183 35 <br /> TOLUENE N D 0 0960 0 . 0984 0 . 0740 0 . 0032 77 1 3 32 65-135 183 35 <br /> ETHYL BENZENE N.D. 0 0960 0 . 0984 0 . 0722 0 . 0029 75 2 2 . 99 65-135 185 35 <br /> ETHYL <br /> 0 . 014 0 .288 0 295 0 . 234 0 . 0111 81 . 2 3 . 76 65-135 182 35 <br /> Sample Spiked: 186384 <br /> Submission ## • 9805267 <br /> Client Sample ID: B-6-36 ' <br /> 1 <br /> MS Smpt # 187077 1220 Quarry Lane • Pleasanton, California 94566-4756 <br /> MSD Smpt # 187078 (925) 484-1919 • Facsimile (925) 484-1096 QCMSPK1229 VINCE 28 May 98 10 3 <br /> Federal ID #68-0140157 <br />