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Page 10 of 16 <br /> tiff eurofins Quality Control - LCS <br /> Calscience <br /> ARCADIS Date Received: 12/06/14 <br /> 2999 Oak Rd, Suite 300 Work Order: 14-12-0682 <br /> Walnut Creek, CA 94597-2537 Preparation: EPA 5030C <br /> Method: EPA 82608 <br /> Project: CA-00595 GP09BPNA.C172 Page 2 of 2 <br /> Quality Control Sample ID Type Matrix Inctrwnent Date Prepared Date Analyzed LCS Balch Number <br /> Aqueous GC/M <br /> Parameter Soike Added Conc.Recovered LCS%Rec. %Rea CL Qualifiers <br /> Benzene 10.00 9.668 97 80-120 <br /> 1,2-Dichloroethane 10.00 9.275 93 e0-122 <br /> Ethylbenzene 10.00 9.616 96 80-120 <br /> Toluene 10.00 9.653 97 80-120 <br /> p/m-Xylene 20.00 19.91 100 80-120 <br /> o-Xylene 10.00 9.989 100 80-120 <br /> Methyl-t-Butyl Ether(MTBE) 10.00 10.08 101 75-123 <br /> Tert-Butyl Alcohol(TBA) 50.00 49.44 99 80-120 <br /> U <br /> RPD:Relative Percent Difference. CL:Control Limits <br /> 7440 Lincoln Way,Garden Grove,CA 92841-1427 TEL:(714)895-5494 FAX:(714)894-7501 <br />