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Trust our People. Trust our Data. Billings, MT 800.735.4489 • Casper, WY 888.235.0515 <br />College Station, TX 888.690.2218 • Gillette, WY 866.686.7175 • Helena, MT 877.472.0711 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 05/26/15 <br />Project: Schwartz - GW 5/1/15 S27887 Work Order: C15050075 <br />Analyte Count Result Units RL %aREC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Analytical Run: ICPMS2-C_150506A <br />Lab ID: ICV Initial Calibration Verification Standard 05/06/15 11:51 <br />Uranium 0.0474 mg/L 0.00030 95 90 110 <br />Method: <br />E200.8 <br />Batch: 44585 <br />Lab ID: <br />MB -44585 <br />Method Blank <br />Run: ICPMS2-C 150506A <br />05/06/15 12:37 <br />Uranium <br />2E-05 mg/L <br />9E-06 <br />101 <br />90 110 <br />Lab ID: <br />LCS3-44585 <br />Laboratory Control Sample <br />Run: ICPMS2-C_150506A <br />05/06/15 12:41 <br />Uranium <br />Batch: 44585 <br />0.490 mg/L <br />0.00030 <br />98 85 115 <br />Lab ID: <br />C15050075-001BMS3 <br />Sample Matrix Spike <br />Arsenic <br />Run: ICPMS2-C_150506A <br />05/06/15 15:13 <br />Uranium <br />4.31 mg/L <br />0.00030 <br />71 70 130 <br />LCS3-44585 <br />Lab ID: <br />C15050075-001BMSD <br />Sample Matrix Spike Duplicate <br />Run: ICPMS4-C_150507A <br />Run: ICPMS2-C_150506A <br />05/06/15 15:16 <br />Uranium <br />1.03 mg/L <br />4.14 mg/L <br />0.00030 <br />54 70 130 3.8 <br />20 S <br />Method: <br />E200.8 <br />Analytical Run: ICPMS4-C_150507A <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />05/07/15 16:15 <br />Arsenic <br />0.0507 mg/L <br />0.0010 <br />101 <br />90 110 <br />Method: <br />E200.8 <br />Batch: 44585 <br />Lab ID: <br />MB -44585 <br />Method Blank <br />Run: ICPMS4-C 150507A <br />05/08/15 00:00 <br />Arsenic <br />ND mg/L <br />0.0004 <br />Lab ID: <br />LCS3-44585 <br />Laboratory Control Sample <br />Run: ICPMS4-C_150507A <br />05/08/15 00:06 <br />Arsenic <br />1.03 mg/L <br />0.0010 <br />103 <br />85 115 <br />Lab ID: <br />C15050075-001BMS3 <br />Sample Matrix Spike <br />Run: ICPMS4-C_150507A <br />05/08/15 02:00 <br />Arsenic <br />1.03 mg/L <br />0.0010 <br />102 <br />70 130 <br />Lab ID: <br />C15050075-001 BMSD <br />Sample Matrix Spike Duplicate <br />Run: ICPMS4-C_150507A <br />05/08/15 02:05 <br />Arsenic <br />1.02 mg/L <br />0.0010 <br />101 <br />70 130 0.5 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Page 6 of 13 <br />