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V c <br /> alscience <br /> nvironmental Quality Control - Spike/Spike Duplicate <br /> Aw aboratories, Inc. <br /> Kiff Analytical Date Received: 12/09/04 <br /> 2795 2nd Street, Suite 300 Work Order No: 04-12-0584 <br /> Davis, CA 95616-6593 Preparation: EPA 1311 <br /> Method: EPA 8260B <br /> Proiect Shell Station <br /> Date Date MS/MSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> SPA Solid GC/MS U 12/09/04 12/10/04 041210501 <br /> ,I <br /> Parameter MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> Benzene 106 106 84-120 0 0-9 <br /> Carbon Tetrachloride 109 112 71-137 3 0-10 <br /> Chlorobenzene 106 108 87-111 2 0-8 <br /> 1,2-Dichlorobenzene 104 107 82-112 3 0-8 <br /> M Dichloroethene 91 93 76-130 2 0-16 <br /> Toluene 109 108 85-115 0 0-8 <br /> Trichloroethene 107 107 84-114. 0 0-10 <br /> Vinyl Chloride 90 95 68-128 4 0-16 <br /> Methyl-t-Butyl Ether(MTBE) 92 103 63-135 12 0-20 <br /> Tert-Butyl Alcohol(TBA) 48 66 25-169 31 0-41 <br /> Diisopropyl Ether(DIPE) 93 97 70-130 4 0-11 <br /> Ethyl-t-Butyl Ether(ETBE) 96 103 73-127 7 0-12 <br /> Tert-Amyl-Methyl Ether(TAME) 91 100 71-125 9 0-12 <br /> Ethanol 64 84 59-143 27 0-30 <br /> RPD-Relative Percent Difference, CL-Control Limit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 FAX: (714)894-7501 <br />