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CHROMALAB, INC. <br /> Environmental Services(SOB) <br /> ' April 16 , 1998 Subm2ssaon #: 9803455 <br /> ' HARDING LAWSON (SACRAMENTO) <br /> Atten Gary Haeck <br /> ' Pro3ect 38737 . 004 <br /> Received- 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 /> Spike Amount Amount Found Spike Recov <br /> BSP Dup BSP Dup BSP Dup Control. % RPD <br /> Analyte m K (Mg/K 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 /> wHo <br /> UENE 2 50 2 . 50 2 60 2 61 104 104 78-122 0 35 <br /> YL BENZENE 2 50 2 . 50 2 88 2 87 115 115 70-130 0 35 <br /> EKES 7 . 50 7 . 50 8 77 8 66 117 115 75-125 1 . 72 35 <br /> 1 <br /> 1 <br /> 1 <br /> IS Smpl # 1180960 1220 Quarry Lane • Pleasanton, California 94566-4756 <br /> ' BSD Smpt #- 180961 (510) 484-1919• Facsimile (510) 484-1096 0C 6601726 UNW 16 13 20 <br /> Federal 10 #68-0140157 <br />