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r � � <br /> CHROMALAB, INC. <br /> Environmental Services(SDB) <br /> February 8, 1999 Submission #: 9902051 <br /> URS GREINER <br /> Atten: Hollis Phillips <br /> rProject: 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#: 17271 Analyzed: February 4, 1999 <br /> Spike <br /> Spike Amount Amount Found Spike Recov <br /> BSP Dup BSP Dup BSP Dup Control % RPD <br /> Analyte (ma/Ra) (ma/Ra) (%) M Limits RPD Lim <br /> GASOLINE 0 . 500 0 . 500 0 .464 0 .491 92 . 8 98 .2 75-125 5 . 65 35 <br /> BENZENE 0 . 100 0 . 100 0 . 101 0 . 102 101 102 77-123 0 . 98 35 <br /> TOLUENE 0 . 100 0 . 100 0 . 0982 0 . 105 98 .2 105 78-122 6 . 69 35 <br /> ETHYL BENZENE 0 . 100 0 . 100 0 . 100 0 . 102 100 102 70-130 1 . 98 35 <br /> XYLENES 0 . 300 0 . 300 0 . 303 0 . 310 101 103 75-125 1. 96 35 <br /> r <br /> r <br /> i <br /> BS smpl #: 227535 LEV2 <br /> BSD Smpl #: 227536 1220 Quarry Lane • Pleasanton, California 94566-4756 .063 ,226 INUI x1,32 <br /> (925) 484-1919 • Facsimile (925) 484-1096 <br /> Federal ID#68-0140157 <br />