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} wwwxtrgylab.com Helena, MT 877 - 472 -0711 • Billings, MT 800- 735 -4488 • Casper, WY 888- 235 -0515 <br />'M f Gillette, WY 866 -886 -1175 • Rapid City, SD 886- 672 -1225 • College Station, TX 888 - 600 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: <br />Cotter Corporation <br />Sample ID: <br />MB -39160 <br />Silver <br />Report Date: <br />10/22/13 <br />Project: <br />Schwartz GW 9/23/13 S27095 <br />Sample ID: <br />C13090879- 001BMS3 <br />Silver <br />Work Order: <br />013090867 <br />FAnalyte <br />Count Result <br />Units <br />RL <br />%REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: <br />E200.8 <br />Batch: R179432 <br />Sample ID: <br />013090730 -001 BMSD4 3 Sample Matrix Spike Duplicate <br />Run: ICPMS4- C_131010A <br />10/10/13 1922 <br />Antimony <br />0.0559 <br />mg /L <br />0.0010 <br />108 <br />70 <br />130 1.8 <br />20 <br />Copper <br />0.0535 <br />mg /L <br />0.0050 <br />102 <br />70 <br />130 0.3 <br />20 <br />Thallium <br />0.0532 <br />mg /L <br />0.00050 <br />106 <br />70 <br />130 0.7 <br />20 <br />Method: E200.8 Analytical Run: ICPMS4- C_131017A <br />Sample ID: ICV Initial Calibration Verification Standard 10/17/13 13:40 <br />Silver 0.0206 mg /L 0.0010 103 90 110 <br />Method: <br />E200.8 <br />Sample ID: <br />MB -39160 <br />Silver <br />Sample ID: <br />LCS3 -39160 <br />Silver <br />Sample ID: <br />C13090879- 001BMS3 <br />Silver <br />Sample ID: <br />C13090879- 001BMSD3 <br />Silver <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Method Blank <br />ND mg /L <br />Laboratory Control Sample <br />0.0510 mg /L <br />Sample Matrix Spike <br />0.0455 mg /L <br />Sample Matrix Spike Duplicate <br />0.0458 mg /L <br />Run: ICPMS4- C_131017A <br />0.0002 <br />Run: ICPMS4- C_131017A <br />0.0010 102 85 115 <br />Run: ICPMS4- C_131017A <br />0.0010 91 70 130 <br />Run: ICPMS4- C_131017A <br />0.0010 92 70 130 <br />ND - Not detected at the reporting limit. <br />Batch: 39160 <br />10/17/13 16:02 <br />10/17/13 16:07 <br />10/17/13 16:23 <br />10/17/13 16:27 <br />0.7 20 <br />Page 12 of 21 <br />