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• <br /> ao� laboratories <br /> QUALITY CONTROL DATA <br /> METHOD: EPA 8260B <br /> AL Job No:A11091 <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- Toluenes 4-Bromofluoro- <br /> methane benzene <br /> 11110/00 Blank BLKA1110 109 100 99 <br /> 11110100 NSA SWE 10 A11091 117 10o 94 <br /> 11/10/00 NSA SWE 18 A11092 116 101 93 <br /> 11/10/00 NSA SWN 10 A11093 120 103 99 <br /> 11/10100 NSA SWN 17 A11094 127 102 98 <br /> 11110100 NSA CTR 20 A11095 123 102 97 <br /> i <br /> Matrix Spike Recovery Summary <br /> Percent Recovery <br /> Lab ID Client ID Analyte MS 1 MSD %RPD <br /> A11091 A11091 11-Dichloroethene 119 I 128 7 <br /> Benzene 103 1 109 6 <br /> Trichloroethene 88 1 92 4 <br /> Toluene 108 1 110 2 <br /> Chlorobenzene 106 1 109 3 <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 FiRk St., Ceres, CA 95307 0 Phone: (209) 581-9280 • Fax: (209) 581-9282 <br />