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Page 34 of 48 <br /> ti®ti <br /> eurof ins Quality Control -Sample Duplicate <br /> Calscience <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: N/A <br /> Method: SM 2510 B <br /> Project: Cove Contractors/04.20090407.00 Page 3 of 4 <br /> Quality Control Sample ID Type Matrix Instrument Date Prepared Date Analyzed Duplicate Batch Number <br /> Parameter Sample Cone. DUP Conc. RPD RPD CL Qualifiers <br /> Specific Conductance 887.0 892.0 1 0-25 <br /> N <br /> C <br /> N <br /> 0 <br /> U <br /> 0 <br /> E <br /> w <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 />