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www.energylab.com Helena, MT 677 -472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888- 235 -0515 <br />� ' y Gillette, WY 866 -686 -7175 • Rapid City, SO 886- 672 -1225 • College Station, TX 888 - 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />4 Laboratory Control Sample <br />Batch: 37830 <br />Sample ID: MB -37830 <br />Report Date: <br />07/05/13 <br />Project: Schwartz GW 06/07/13 S26942 & S26943 <br />Antimony <br />0.000160 <br />mg /L <br />Work Order: <br />013060291 <br />F alyte <br />Count Result Units <br />RL <br />° /.REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: E200.8 <br />0.000252 <br />mg /L <br />0.00020 <br />89 <br />Analytical Run: ICPMS2- C_130612A <br />Sample ID: ICV <br />4 Initial Calibration Verification Standard <br />Thallium <br />0.426 mg /L <br />0.00050 <br />06/12/13 12:46 <br />Antimony <br />0.0522 mg /L <br />0.0010 <br />104 <br />90 <br />110 <br />Copper <br />0.0499 mg /L <br />0.0010 <br />100 <br />90 <br />110 <br />110 <br />Lead <br />0.0492 mg /L <br />0.0010 <br />99 <br />90 <br />110 <br />93 <br />Thallium <br />0.0503 mg /L <br />0.0010 <br />101 <br />90 <br />110 <br />101 <br />Method: E200.8 <br />4 Laboratory Control Sample <br />Batch: 37830 <br />Sample ID: MB -37830 <br />4 Method Blank <br />06/13/13 02:44 <br />Run, ICPMS2 -C 130612A 06/13/13 02:41 <br />Antimony <br />0.000160 <br />mg /L <br />0.0010 <br />Copper <br />0.000195 <br />mg /L <br />0.0010 <br />Lead <br />ND <br />mg /L <br />0.0050 <br />Thallium <br />0.000252 <br />mg /L <br />0.00020 <br />Sample ID: LCS3 -37830 <br />4 Laboratory Control Sample <br />Run: ICPMS2- C_130612A <br />06/13/13 02:44 <br />Antimony <br />0.533 mg /L <br />0.0010 <br />106 <br />85 115 <br />Copper <br />0.424 mg /L <br />0.0050 <br />85 <br />85 115 <br />Lead <br />0.445 mg /L <br />0.0010 <br />89 <br />85 115 <br />Thallium <br />0.426 mg /L <br />0.00050 <br />85 <br />85 115 <br />Sample ID: C13060268 -001 BMS3 <br />4 Sample Matrix Spike <br />Run: ICPMS2- C_130612A <br />06/13/13 04:14 <br />Antimony <br />0.548 mg /L <br />0.0010 <br />110 <br />70 130 <br />Copper <br />0.503 mg /L <br />0.0050 <br />93 <br />70 130 <br />Lead <br />0.504 mg /L <br />0.0010 <br />101 <br />70 130 <br />Thallium <br />0.490 mg /L <br />000050 <br />98 <br />70 130 <br />Sample ID: C13060268 -001 BMSD3 <br />4 Sample Matrix Spike Duplicate <br />Run: ICPMS2- C_130612A <br />06/13/13 04 17 <br />Antimony <br />0.534 mg /L <br />0.0010 <br />107 <br />70 130 <br />2.6 <br />20 <br />Copper <br />0.500 mg /L <br />0.0050 <br />93 <br />70 130 <br />0.6 <br />20 <br />Lead <br />0.498 mg /L <br />0.0010 <br />99 <br />70 130 <br />1.4 <br />20 <br />Thallium <br />0.479 mg /L <br />0.00050 <br />96 <br />70 130 <br />2.1 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit <br />Page 12 of 24 <br />