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i <br /> alscience <br /> nvironmental Quality Control - LCS/LCS Duplicate <br /> mw aboratories, Inc. <br /> Kiff Analytical Date Received: N/A <br /> 2795 2nd Street, Suite 300 Work Order No: 04-12-0584 <br /> Davis, CA 95616-6593 Preparation: EPA 1311 <br /> Method: EPA 8270C <br /> Project: Shell Station <br /> Date Date LCS/LCSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 096-02-007-751 Aqueous GC/MS Y 12113/04 12/13/04 041213L01 <br /> Parameter LCS%REC LCSD%REC %REC CL RPD RPD CL Qualifiers <br /> Phenol 48 51 20-120 5 0-42 <br /> 2-Chlorophenol 79 84 23-134 6 0-40 <br /> 1,4=Dichlorobenzene 85 93 20-124 8 0-28 <br /> N-Nitroso-di-n-propylamine 104 112 0-230 7 0-38 <br /> 1,2,4-Trichlorobenzene 78 84 44-142 8 0-28 <br /> Acenaphthene 87 95 47-145 9 0-31 <br /> 2,4-Dinitrotoluene 94 101 39-139 7 0-38 <br /> { <br />� I <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 'i <br /> -_ I <br />