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1 <br /> CHROMALAB, INC. <br /> Environmental Services(SDB) <br /> May 28, 1998 Submission #: 9805267 <br />' ERM-WEST WALNUT CREEK <br /> Atten: James Ackerman <br /> Protect: UP-STOCKTON Pro3ect#• 8187 . 25 <br /> Received: May 18 , 1998 <br />' re: Blank spike and duplicate report for Gasoline BTEX analysis. <br /> Method: SW846 8020A Nov 1990 / 8015Mod <br />' Matrix: SOIL <br /> Lab Run#: 12921 Analyzed. May 26 , 1996 <br />' Spike <br /> Spike Amount Amount Found Spike Recov $ <br /> SSP Dup BSP Dup SSP Dup Control $ RPD <br /> Analyte __.. (ma/Ka) (Mg/Kg) ($) ($) Limits RPD Lim <br /> GASOLINE 12 .4 12 3 13 . 7 11 8 110 95 9 65-135 13 7 35 <br /> BENZENE 2 48 2 . 46 2 . 37 2 .47 95 6 100 77-1.23 4 50 35 <br /> TOLUENE 2 48 2 . 46 2 49 2 .50 100 102 78-122 1 . 98 35 <br /> ETHYL BENZENE 2 .48 2 46 2 . 78 2 . 83 112 115 70-130 2 64 35 <br /> XYLENES 7 44 7 . 37 8 . 39 8 55 113 116 75-1.25 2 62 35 <br /> 1 <br /> BS Smpt # 187551 LEV2 <br />' BSD SW # 187552 1220 Quarry Lane • Pleasanton, California 94566-4756 «M,M NNMM1263 <br /> (925) 484-1919 • Facsimile (925) 484-1096 <br /> Federal ID#68-0140157 <br />