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CHROMALAB, INC. <br /> Environmental Services(SDB) <br /> IFebruary 8, 1999 Submission #: 9902051 <br /> URS GREINER <br /> Atten: Hollis Phillips <br /> Project: ARCH RD Project#: 43-00066762 . 004000 <br /> Received: February 3 , 1999 <br /> re: Blank spike and duplicate report for Gasoline BTEX analysis . <br /> Method: SW846 8020A Nov 1990 / 8015Mod <br /> Matrix: SOIL <br /> Lab Run#: 17280 Analyzed: February 5, 1999 <br /> Spike <br /> Spike Amount Amount Found Spike Recov <br /> BSP Dup BSP Dup BSP Dup Control % RPD <br /> Analyte (ma/Ka) (ma/Ka) (%) (%) Limits RPD Lim <br /> GASOLINE 0 . 500 0 .500 0 . 383 0 .394 76 . 6 78 . 8 75-125 2 . 83 35 <br /> BENZENE 0 . 100 0 . 100 0 . 0900 0 . 0826 90 . 0 82 . 6 77-123 8 . 57 35 <br /> TOLUENE 0 . 100 0 . 100 0 . 0895 0 . 0822 89 . 5 82 .2 78-122 8 . 50 35 <br /> IETHYL BENZENE 0 . 100 0 . 100 0 . 0900 0 . 0828 90 . 0 82 . 8 70-130 8 .33 35 <br /> XYLENES 0 .300 0 .300 0 . 267 0 .246 89 . 0 82 . 0 75-125 8 . 19 35 <br /> L <br /> t <br /> BS Smpt #: 227663 LEV2 <br /> BSD SmpL #: 227664 1220 Quarry Lane Pleasanton, California 94566-4756 <br /> (925) 484-1919 • Facsimile (925) 484-1096 <br /> Federal ID#68-0140157 <br />