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Page 22 of 32 <br /> L,/science <br /> Quality Control - LCS <br /> Aanvironmenta/ <br /> �,aboratories, Inc. <br /> ERM Date Received: 04/16/14 <br /> 1277 Treat Blvd Suite 500 Work Order: 14-04-1157 <br /> Walnut Creek, CA 94597-7989 Preparation: EPA 7471A Total <br /> Method: EPA 7471A <br /> Project: PG&E MDI /0242722 Page 4 of 5 <br /> Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed LCS Batch Number <br /> 099-16-272-167 LCS Solid Mercury 05 04/16/14 04/16/1411:29 140416L04 <br /> Parameter Soike Added Conc.Recovered LCS%Rec. %Rec.CL Qualifiers <br /> Mercury 0.8350 0.8473 101 85-121 <br /> C <br /> d <br /> C <br /> O <br /> U <br /> 0 <br /> c <br /> d <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 />