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www.ewdalb.com Helena, MT 871472 -0711 • Billings, MT 600- 735 -4489 • Casper, WY 888 - 235 -0515 <br />} Slam 1932 Gillette, WY 866 -666 -1175 • Rapid City, SD 866 - 672.1225 • College Station, TX 888 - 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 09/24/14 <br />Project: Schwartz -GW 9/4/14 S27662 Work Order: C14090228 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 <br />Lab ID: ICV <br />Arsenic <br />Barium <br />Iron <br />Manganese <br />Molybdenum <br />Uranium <br />6 <br />Initial Calibration Verification Standard <br />0.0512 mg /L 0.0010 <br />0.0501 mg /L 0.0010 <br />0.993 mg /L 0.0010 <br />0.0505 mg /L 0.0010 <br />0.0478 mg /L 0.0010 <br />0.0490 mg /L 0.00030 <br />102 <br />100 <br />99 <br />101 <br />96 <br />98 <br />90 <br />90 <br />90 <br />90 <br />90 <br />90 <br />Analytical Run: ICPMS4- C_140912A <br />09/12/14 14:43 <br />110 <br />110 <br />110 <br />110 <br />110 <br />110 <br />Method: E200.8 <br />Batch: 42584 <br />Lab ID: MB -42584 <br />6 <br />Method Blank <br />Run: ICPMS4 -C 140912A <br />09/13/14 05:35 <br />Arsenic <br />0.0006 mg /L <br />0.0004 <br />Barium <br />ND mg /L <br />4E -05 <br />Iron <br />ND mg /L <br />0.004 <br />Manganese <br />0.0002 mg /L <br />0.0001 <br />Molybdenum <br />0.0004 mg /L <br />0.0002 <br />Uranium <br />6E -05 mg /L <br />4E -05 <br />Lab ID: LCS3 -42584 <br />6 <br />Laboratory Control Sample <br />Run: ICPMS4- C_140912A <br />09/13/14 05:55 <br />Arsenic <br />0.52 mg /L <br />0.0010 <br />104 <br />85 <br />115 <br />Barium <br />0.53 mg /L <br />0.10 <br />106 <br />85 <br />115 <br />Iron <br />2.6 mg /L <br />0.030 <br />104 <br />85 <br />115 <br />Manganese <br />2.7 mg /L <br />0.010 <br />108 <br />85 <br />115 <br />Molybdenum <br />0.53 mg /L <br />0.10 <br />106 <br />85 <br />115 <br />Uranium <br />0.54 mg /L <br />0.00030 <br />108 <br />85 <br />115 <br />Lab ID: C14090151- 001CMS3 <br />6 <br />Sample Matrix Spike <br />Run: ICPMS4- C_140912A <br />09/13/14 06:06 <br />Arsenic <br />0.50 mg /L <br />0.0010 <br />99 <br />70 <br />130 <br />Barium <br />0.59 mg /L <br />0.10 <br />104 <br />70 <br />130 <br />Iron <br />2.5 mg /L <br />0.030 <br />100 <br />70 <br />130 <br />Manganese <br />2.6 mg /L <br />0.010 <br />104 <br />70 <br />130 <br />Molybdenum <br />0.54 mg /L <br />0.10 <br />107 <br />70 <br />130 <br />Uranium <br />0.55 mg /L <br />0.00030 <br />107 <br />70 <br />130 <br />Lab ID: C14090151- 001CMSD <br />6 <br />Sample Matrix Spike Duplicate <br />Run: ICPMS4- C_140912A <br />09/13/14 06:09 <br />Arsenic <br />0.52 mg /L <br />0.0010 <br />102 <br />70 <br />130 <br />3.3 <br />20 <br />Barium <br />0.60 mg /L <br />0.10 <br />107 <br />70 <br />130 <br />2.7 <br />20 <br />Iron <br />2.6 mg /L <br />0.030 <br />102 <br />70 <br />130 <br />2.8 <br />20 <br />Manganese <br />2.7 mg /L <br />0.010 <br />108 <br />70 <br />130 <br />3.8 <br />20 <br />Molybdenum <br />0.54 mg /L <br />0.10 <br />108 <br />70 <br />130 <br />1.1 <br />20 <br />Uranium <br />0.54 mg /L <br />0.00030 <br />106 <br />70 <br />130 <br />0.6 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 8 of 14 <br />