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Page 26 of 48 <br /> ;r. eurofins Quality Control -Spike/Spike Duplicate <br /> Calscienee <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: EPA 300.0 <br /> Project: Cove Contractors/04.20090407.00 Page 1 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 C Qualifiers <br /> Conc. Added Conc. %Rec. Conc. %Rec. <br /> Chloride 248.2 50.00 384.5 273 383.5 271 80-120 0 0-20 3 <br /> Nitrate(as N) ND 5.000 4.999 100 5.016 100 80-120 0 0-20 <br /> Sulfate 218.8 50.00 325.0 213 324.6 212 80-120 0 0-20 3 <br /> 0 <br /> 0 <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 />