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1 <br /> ao� laboratories <br /> QUALITY CONTROL DATA <br />' METHOD EPA 82608 <br /> AL,fob No E06131 <br /> Instrument HP GC/MS <br /> Matrix Water <br />' Surrogate Standard Recovery Summary <br />' Date Analyzed Client ID Lab ID %Recovery %Recovery Toluene- %Recovery 4- <br /> Dibromofluoromethane d8 Bromofluorobenzene <br /> 06/09/04 Blank BLKE0609 96 97 91 <br />' 06/09/04 TW Efflu E06131 97 97 88 <br /> 06/09/04 TW-C-1 E06132 106 100 87 <br /> I <br /> I <br />' Matrix Spike Recovery Summary <br />' Lab ID Client Recovery oenl ID Analyte �RPD %LCS <br /> MS 1 MSD <br /> E06131 TW Efflu 1,1-Dichloroethene 80 1 80 0 79 <br /> Benzene 92 1 92 0 89 <br /> Tnchloroethene 85183 2 81 <br /> Toluene 92192 0 82 <br /> IChlorobenzene 99 1 98 1 83 <br /> Note Daily method blank showed no contamination at or above the reporting limits <br /> All laboratory qualrty control parameters were found to be within established limits <br /> 3037 Fifth St Ceres C9 95307 • Phone (209) 581 -9280 • Fox (209) 581 -9282 <br />