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Page 29 of 48 <br /> tip} <br /> eurof ins Quality Control - Spike/Spike Duplicate <br /> Calsciece <br /> EarthCon Consultants, Inc. Date Received: 10/02/15 <br /> 2124 Main Street, Suite 200 Work Order: 15-10-0164 <br /> Huntington Beach, CA 92648-2030 Preparation: EPA 3005A Filt. <br /> Method: EPA 6020 <br /> Project: Cove Contractors/04.20090407.00 Page 4 of 5 <br /> Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed MS/MSD Batch Number <br /> Parameter Sample Spike MS MS MSD MSD %Rec.CL RPD RPD CL Qualifiers <br /> Conc. Added Conc. %Rec. Conc. %Rec. <br /> Barium 0.1035 0.1000 0.2105 107 0.2163 113 74-128 3 0-10 <br /> Manganese 0.03927 0.1000 0.1438 105 0.1474 108 72-126 2 0-42 <br /> 0 <br /> ' U <br /> 0 <br /> 3 <br /> m <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 />