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a on laboratories <br /> QUALITY CONTROL DATA <br /> METHOD EPA 82603 <br /> AL Job No A12391 <br /> Instrument GC/MS 01 <br /> Matrix Water <br /> Surrogate Spike Recovery Summary <br /> %Recovery %Recovery %Recovery <br /> Date Analyzed Client ID Lab ID Dibromofluoro- Toluene-dg 4-Bromofluoro- <br /> methane benzene <br /> 12121/00 Blank BLKA1221 118 103 94 <br /> 12121/00 G MW-1 A12391 132 102 100 <br /> 12/21/00 G MW-2 A12392 131 102 96 <br /> 12/21/00 G MW-3 A12393 130 100 99 <br /> 12/21/00 G MW-4 A12394 137 99 100 <br /> Matrix Spike Recovery Summary <br /> Percent Recovery <br /> Lab ID Client ID Analyte MS ! MSD %RPD <br /> A12322 GAB MW4-20 1,1-Dichloroethene 132 1 149 12 <br /> Benzene 101 1 100 1 <br /> Tnchloroethene 97 1 99 2 <br /> Toluene 108 1 108 0 <br /> Chlorobenzene 106 1 105 1 <br /> . Note Daily method blank showed no contamination at or above the reporting limits <br /> All laboratory quality control parameters were found to be within established limits <br /> 3037 FAH St, Ceres, CA 95307 0 Phone (209) 581-9280 • Fax (209) 581-9282 <br />