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CHRQMALAB, INC. <br /> Environmental Services(SDB) <br />' April 16 , 1998 Submission #: 9803455 <br />' HARDING LAWSON (SACRAMENTO) <br /> Atten: Gary Haeck <br /> Protect. 38737 004 <br /> Receaved- March 30 , 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# 12211 Analyzed. April 15 , 1998 <br />' Spike <br /> Spxke Amount Amount Found Spike Recov <br /> SSP Dup BSP Dup BSP Dup Control % RPD <br /> Analyte (mci/Kcr) (mcr/K ) M M Limits RPD Lim <br /> GASOLINE 12 5 12 5 11 . 8 11 1 94 4 88 8 65-135 6 . 11 35 <br /> BENZENE 2 . 50 2 50 2 .49 2 47 99 6 98 8 77-123 0 . 80 35 <br /> OLUENE 2 . 50 2 . 50 2 . 60 2 61 104 104 78- 122 0 35 <br /> BENZENE 2 50 2 . 50 2 . 88 2 . 87 115 115 70-130 0 35 <br /> LENES 7 . 50 7 . 50 8 77 8 . 66 117 115 75-125 1 . 72 35 <br /> 1 <br /> r <br /> i <br /> 1 <br /> BS Smpl # 180960 1220 Quarry Lane • Pleasanton, California 94566-4756 <br /> BSD Smpt # 180961 (510) 484-1919- Facsimile (510) 484-1096 a«1226 MNC6161711 <br /> Federal ID #68-0140157 <br />