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11 <br /> Acculabs Inc. - Davis <br /> ' EPA 8260B QC Report <br /> rMatrix: Water Date Analyzed: 6117199 <br /> QC Batch: VW990617 QC Limits Set: 4/I2/99 <br /> Spike Conc LES LCSD Control Chart Limits <br /> Parameter ug/L % Rec % Rec RPD Lower Upper <br /> 1,1-Dichloroethene 50 96 100 4.2 26 134 <br /> Benzene 50 109 109 0.2 85 127 <br /> Trichloroethene 50 103 104 0.3 66 114 <br /> ' Toluene 50 97 93 4.4 58 131 <br /> lChlorobenzene 50 103 102 0.3 87 112 <br /> Control Chart Limits <br /> Surrogate Compound Lower U per <br /> Dibromofluoromethane 76 132 <br /> Toluene-d8 64 123 <br /> 4-Bromofluorobenzene 43 115 <br /> 1 <br /> Tom 4oka, <br /> ' Laboratory Director <br /> 1 <br /> C A E X C E L1Q QV W 990617.X L S <br /> 1 I <br />