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Page 52 of 79 <br /> alscience <br /> _nvironmental Quality Control - LCS/LCS Duplicate �° <br /> AN aboratories, Inc. <br /> Q ne <br /> GeoSyntec Consultants Date Received: N/A <br /> 475 14th Street, Suite 450 Work Order No: 08-08-0026 <br /> Oakland, CA 94612-1940 Preparation: EPA 3510C <br /> Method: EPA 8270C <br /> Project: W FS - Stockton <br /> Date Date LCS/LCSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 095-01-003-2,479 Aqueous GC/MS TT 08/04/08 08/05/08 080804L10 <br /> Parameter LCS%REC LCSD%REC %REC CL RPD RPD CL Qualifiers <br /> Phenol 37 35 4-142 4 0-24 <br /> 2-Chlorophenol 79 76 53-113 4 0-17 <br /> 1,4-Dichlorobenzene 78 76 50-122 3 0-19 <br /> N-Nitroso-di-n-propylamine 77 72 56-146 6 0-22 <br /> 4-Chloro-3-Methyl phenol 78 76 55-121 2 0-18 <br /> Acenaphthene 79 80 55-139 1 0-17 <br /> 4-Nitrophenol 35 32 1-145 10 0-29 <br /> 2,4-Dinitrotoluene 79 77 41-161 3 0-22 <br /> Pentachlorophenol 87 85 34-130 2 0-23 <br /> Pyrene 74 76 38-170 3 0-27 <br /> 1,2,4-Trichlorobenzene 78 79 49-121 2 0-19 <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 />