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www.ene dab.com Helena, MT 671 4724711 • Billings, MT BO8- 735 -4489 • Casper, WY 888- 235 -0515 <br />J <br />AWO*a ExcaffAVOSfty Im Gillette, WY 866- 686 -7175 • Rapid City, SD 8BB- 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 />Report Date: <br />02/17/15 <br />Project: <br />Schwartz - GW 1/28/15 S28066, S28069, S28071 <br />Work Order: <br />C15010751 <br />Analyte <br />Count <br />Result Units <br />RL <br />%REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: <br />E200.8 <br />Analytical Run: ICPMS2- C_150205A <br />Lab ID: <br />ICV <br />5 <br />Initial Calibration Verification Standard <br />02/04/15 12:41 <br />Antimony <br />0.0471 mg /L <br />0.0010 <br />94 <br />90 <br />110 <br />Chromium <br />0.0504 mg /L <br />0.0010 <br />101 <br />90 <br />110 <br />Copper <br />0.0503 mg /L <br />0.0010 <br />101 <br />90 <br />110 <br />Silver <br />0.0187 mg /L <br />0.0010 <br />93 <br />90 <br />110 <br />Thallium <br />0.0496 mg /L <br />0.0010 <br />99 <br />90 <br />110 <br />Method: <br />E200.8 <br />Batch: 43825 <br />Lab ID: <br />MB -43825 <br />5 <br />Method Blank <br />Run: ICPMS2- C_150205A <br />02/04/15 17:45 <br />Antimony <br />ND mg /L <br />0.0002 <br />Chromium <br />0.0005 mg /L <br />0.0002 <br />Copper <br />ND mg /L <br />0.0004 <br />Silver <br />5E -05 mg /L <br />2E -05 <br />Thallium <br />ND mg /L <br />0.0001 <br />Lab ID: <br />LCS3 -43825 <br />5 <br />Laboratory Control Sample <br />Run: ICPMS2- C_150205A <br />02/04/15 17:48 <br />Antimony <br />0.542 mg /L <br />0.0010 <br />108 <br />85 <br />115 <br />Chromium <br />0.502 mg /L <br />0.0050 <br />100 <br />85 <br />115 <br />Copper <br />0.474 mg /L <br />0.0050 <br />95 <br />85 <br />115 <br />Silver <br />0.0495 mg /L <br />0.0010 <br />99 <br />85 <br />115 <br />Thallium <br />0.508 mg /L <br />0.00050 <br />102 <br />85 <br />115 <br />Lab ID: <br />C15010752- OOIBMS3 <br />5 <br />Sample Matrix Spike <br />Run: ICPMS2- C_150205A <br />02/04/15 19:25 <br />Antimony <br />0.531 mg /L <br />0.0010 <br />106 <br />70 <br />130 <br />Chromium <br />0.486 mg /L <br />0.0050 <br />97 <br />70 <br />130 <br />Copper <br />0.442 mg /L <br />0.0050 <br />88 <br />70 <br />130 <br />Silver <br />0.0439 mg /L <br />0.0010 <br />87 <br />70 <br />130 <br />Thallium <br />0.466 mg /L <br />0.00050 <br />93 <br />70 <br />130 <br />Lab ID: <br />C15010752- 001BMSD <br />5 <br />Sample Matrix Spike Duplicate <br />Run: ICPMS2- C_150205A <br />02/04/15 19:28 <br />Antimony <br />0.553 mg /L <br />0.0010 <br />110 <br />70 <br />130 4.2 <br />20 <br />Chromium <br />0.492 mg /L <br />0.0050 <br />98 <br />70 <br />130 1.4 <br />20 <br />Copper <br />0.449 mg /L <br />0.0050 <br />89 <br />70 <br />130 1.5 <br />20 <br />Silver <br />0.0477 mg /L <br />0.0010 <br />94 <br />70 <br />130 8.2 <br />20 <br />Thallium <br />0.498 mg /L <br />0.00050 <br />100 <br />70 <br />130 6.7 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 11 of 23 <br />