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• www.emeob.com Helena, MT 877- 472 -0711 • Billings, W 800 - 735 -4489 • Casper, WY 888 - 235 -9515 <br />A *tkaf&NO°arSlaw 1051 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 />E200.8 <br />Sample ID: <br />MB -37931 <br />Chromium <br />Analytical Run: ICPMS2- C_130617A <br />Report Date: <br />06/21/13 <br />Project: Schwartz SW 5/22/13 S26996 <br />Sample ID: <br />06/17/13 18:23 <br />Arsenic <br />98 85 115 <br />Work Order: <br />C13050909 <br />Analyte Count <br />Result <br />Units <br />RL <br />° /oREC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: E200.8 <br />Batch: 37652 <br />Sample ID: <br />MB -37652 <br />Method Blank <br />Batch. R174380 <br />Sample ID: C13050902- 004BMSD4 8 Sample Matrix Spike Duplicate <br />Arsenic <br />Run: ICPMS2- C_130604A <br />06/04/13 20:42 <br />Molybdenum <br />0.0574 <br />mg /L <br />00010 <br />112 <br />70 <br />130 3.2 <br />20 <br />Thallium <br />0.0571 <br />mg /L <br />0.00050 <br />114 <br />70 <br />130 1.8 <br />20 <br />Uranium <br />0.0623 <br />mg /L <br />0.00030 <br />124 <br />70 <br />130 0.3 <br />20 <br />Zinc <br />0.0479 <br />mg /L <br />0.010 <br />92 <br />70 <br />130 2.8 <br />20 <br />Method: <br />E200.8 <br />Sample ID: <br />MB -37931 <br />Chromium <br />Analytical Run: ICPMS2- C_130617A <br />Sample ID: <br />ICV <br />Initial Calibration Verification Standard <br />Sample ID: <br />06/17/13 18:23 <br />Arsenic <br />98 85 115 <br />0.0503 mg /L <br />0.0010 <br />101 <br />90 110 <br />0.0050 <br />Method: <br />E200.8 <br />Run: ICPMS2- C_130619A <br />06/19/13 21:07 <br />0.0050 <br />Batch: 37652 <br />Sample ID: <br />MB -37652 <br />Method Blank <br />Run: ICPMS2 -C 130617A <br />06/17/13 18:45 <br />Arsenic <br />0.0006 mg /L <br />0.0002 <br />Sample ID: <br />LCS3 -37652 <br />Laboratory Control Sample <br />Run: ICPMS2- C_130617A <br />06/17/13 18:49 <br />Arsenic <br />0.489 mg /L <br />0.0010 <br />98 <br />85 115 <br />Sample ID: <br />013050907- 001DMS3 <br />Sample Matrix Spike <br />Run: ICPMS2- C_130617A <br />06/17/13 19:07 <br />Arsenic <br />0.479 mg /L <br />0.0010 <br />96 <br />70 130 <br />Sample ID: <br />C13050907- 001DMSD3 <br />Sample Matrix Spike Duplicate <br />Run: ICPMS2- C_130617A <br />06/17/13 19:23 <br />Arsenic <br />0.496 mg /L <br />0.0010 <br />99 <br />70 130 3.5 <br />20 <br />Method: E200.8 Analytical Run: ICPMS2- C_130619A <br />Sample ID: ICV Initial Calibration Verification Standard 06/19/13 19:50 <br />Chromium 0.0502 mg /L 0.0010 100 90 110 <br />Method: <br />E200.8 <br />Sample ID: <br />MB -37931 <br />Chromium <br />06/19/13 20:52 <br />Sample ID: <br />LCS3 -37931 <br />Chromium <br />Sample ID: <br />C13050907 -001 DMS3 <br />Chromium <br />98 85 115 <br />Sample ID: <br />C13050907 -001 DMSD3 <br />Chromium <br />06/19/13 21:04 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Method Blank <br />0.002 mg /L <br />Laboratory Control Sample <br />0.492 mg /L <br />Sample Matrix Spike <br />0.478 mg /L <br />Sample Matrix Spike Duplicate <br />0.479 mg /L <br />ND - Not detected at the reporting limit. <br />Page 14 of 26 <br />Batch: 37931 <br />Run: ICPMS2- C_130619A <br />06/19/13 20:52 <br />0.0001 <br />Run: ICPMS2- C_130619A <br />06/19/13 20:55 <br />0.0050 <br />98 85 115 <br />Run: ICPMS2- C_130619A <br />06/19/13 21:04 <br />0.0050 <br />95 70 130 <br />Run: ICPMS2- C_130619A <br />06/19/13 21:07 <br />0.0050 <br />95 70 130 0.2 <br />20 <br />ND - Not detected at the reporting limit. <br />Page 14 of 26 <br />