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• <br /> CHROMALAB, INC. <br /> ErMmnmental Services(SDB) <br /> ' April 9, 1999 Submission #: 9904031 <br /> ' SECOR CONCORD <br /> Atten: TOM CROSBY <br /> Project: LYON INVESTMENTS Project#: 70139-004-02 <br /> Received: April 1, 1999 <br /> ' re: Blank Spike and duplicate report for Volatile Organics by GC/MS analysi <br /> ' Method: SW846 Method 8260A Sept 1994 <br /> Matrix: WATER <br /> Lab Run#: 18252 Analyzed: April 6, 1999 <br /> ' Spike <br /> Spike Amount Amount Found Spike Recov $ <br /> BSP Dup BSP Dup BSP Dup Control % RPD <br /> ' <br /> An (ucr/L) (ua/L) M (%) Limits RPD Lim <br /> BENZENE 50 . 0 50 . 0 46 .4 49 .2 92 .8 98 .4 69-129 5 . 86 20 <br /> CHLOROBENZENE 50 . 0 50 . 0 52 .4 52 . 8 105 106 61-121 0 . 94 20 <br /> ' l,l-DICHLOROETHENE 50 .0 50 . 0 41. 2 45 . 1 82 .4 90 .2 65-125 9 . 04 20 <br /> TOLUENE 50 . 0 50 . 0 43 .1 47 .3 86 . 2 94 . 6 70-130 9 .29 20 <br /> TRICHLOROETHENE 50 . 0 50 . 0 44 .3 47 . 9 88 . 6 95. 8 74-134 7 . 81 20 <br /> 1 <br /> 1 <br /> ' BS SWI #: 235894 <br /> BSD Supt #: 235895 1220 Quarry Lane • Pleasanton, California 94566-4756 <br /> (925) 484-1919 • Facsimile (925)484-1096 <br /> Federal ID#68-0140157 <br />