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wwmenergylatitom Helena, MT 877- 472 -0711 • Billings, MT 600- 735 -4469 • Casper, WY 888- 235 -0515 <br />moy"amftwam yra2 Gillette, WY 886 -888 -7175 • Rapid City, SD 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 />Project: Schwartz -GW 7/3/13 S27057 <br />Analyte <br />Count Result Units <br />Method: <br />E200.8 <br />0.0010 <br />106 <br />Sample ID: <br />ICV <br />4 <br />Initial Calibration Verification S <br />Aluminum <br />110 <br />0.0010 <br />0.0518 mg /L <br />Antimony <br />110 <br />LFB <br />0.0530 mg /L <br />Arsenic <br />07/26/13 01:42 <br />0.030 <br />0.0508 mg /L <br />Silver <br />0.0010 <br />0.0010 <br />0.0206 mg /L <br />Method: <br />E200.8 <br />0.0010 <br />106 <br />Sample ID: <br />MB -38345 <br />3 <br />Method Blank <br />Aluminum <br />07/26/13 01:46 <br />0.030 <br />0.001 mg /L <br />Arsenic <br />20 <br />0.0010 <br />0.0005 mg /L <br />Silver <br />20 <br />0.0010 <br />ND mg /L <br />Sample ID: <br />LCS3 -38345 <br />3 <br />Laboratory Control Sample <br />Aluminum <br />2.37 mg /L <br />Arsenic <br />0.510 mg /L <br />Silver <br />0.0533 mg /L <br />Sample ID: <br />C13070172 -001 EMS3 <br />3 <br />Sample Matrix Spike <br />Aluminum <br />2.31 mg /L <br />Arsenic <br />0.499 mg /L <br />Silver <br />0.0531 mg /L <br />Sample ID: <br />C13070172 -001 EMSD3 <br />3 <br />Sample Matrix Spike Duplicate <br />Aluminum <br />2.23 mg /L <br />Arsenic <br />0.490 mg /L <br />Silver <br />0.0521 mg /L <br />Report Date: 07/30/13 <br />Work Order: C13070189 <br />RL ° /.REC Low Limit High Limit RPD RPDLimit Qual <br />Analytical Run: ICPMS4- C_130725B <br />tandard 07/25/13 15:53 <br />0.0010 <br />104 <br />90 <br />110 <br />0.0010 <br />106 <br />90 <br />110 <br />0.0010 <br />102 <br />90 <br />110 <br />0.0010 <br />103 <br />90 <br />110 <br />Batch: 38345 <br />Run: ICPMS4- C_130725B 07/26/13 01:21 <br />0.0007 <br />0.0004 <br />0.0002 <br />Method: <br />E200.8 <br />Run: ICPMS4- C_130725B <br />07/26/13 01:25 <br />0.030 <br />95 <br />85 115 <br />Method Blank <br />0.0010 <br />102 <br />85 115 <br />0.0010 <br />107 <br />85 115 <br />Sample ID: <br />LFB <br />Laboratory Fortified Blank <br />Run- ICPMS4- C_130725B <br />07/26/13 01:42 <br />0.030 <br />91 <br />70 130 <br />0.0010 <br />0.0010 <br />100 <br />70 130 <br />Sample Matrix Spike <br />0.0010 <br />106 <br />70 130 <br />0.105 mg /L <br />0.0010 <br />Run: ICPMS4- C_130725B <br />07/26/13 01:46 <br />0.030 <br />88 <br />70 130 3.5 <br />20 <br />0.0010 <br />98 <br />70 130 1.8 <br />20 <br />0.0010 <br />104 <br />70 130 1.8 <br />20 <br />Method: <br />E200.8 <br />Sample ID: <br />LRB <br />Method Blank <br />Run: ICPMS4- C_130725B <br />Antimony <br />0.0005 mg /L <br />0.0001 <br />Sample ID: <br />LFB <br />Laboratory Fortified Blank <br />Run: ICPMS4- C_130725B <br />Antimony <br />0.0525 mg /L <br />0.0010 <br />104 85 115 <br />Sample ID: <br />C13060822 -001 BMS4 <br />Sample Matrix Spike <br />Run: ICPMS4- C_130725B <br />Antimony <br />0.105 mg /L <br />0.0010 <br />105 70 130 <br />Sample ID: <br />C13060822 -001 BMSD4 <br />Sample Matrix Spike Duplicate <br />Run: ICPMS4- C_130725B <br />Antimony <br />0.110 mg /L <br />0.0010 <br />110 70 130 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Batch: R176429 <br />07/25/13 14:38 <br />07/25/13 14:43 <br />07/25/13 17:24 <br />07/25/13 17:28 <br />4.3 20 <br />Page 11 of 20 <br />