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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: <br />Cotter Corporation <br />Report Date: <br />04/07/15 <br />Project: <br />Schwartz -GW 3/26/15 S28160,S28161,S28166 <br />Work Order: <br />C15030861 <br />Analyte <br />Count Result Units <br />RL <br />%REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: <br />E200.8 <br />Analytical Run: ICPMS4-C_150331A <br />Lab ID: <br />ICV <br />4 Initial Calibration Verification Standard <br />03/31/15 11:20 <br />Aluminum <br />0.0480 mg/L <br />0.0010 <br />96 <br />90 <br />110 <br />Antimony <br />0.0497 mg/L <br />0.0010 <br />99 <br />90 <br />110 <br />Copper <br />0.0494 mg/L <br />0.0010 <br />99 <br />90 <br />110 <br />Thallium <br />0.0481 mg/L <br />0.0010 <br />96 <br />90 <br />110 <br />Method: <br />E200.8 <br />Batch: 44269 <br />Lab ID: <br />MB -44269 <br />4 Method Blank <br />Run: ICPMS4-C 150331A <br />04/01/15 00:45 <br />Aluminum <br />ND mg/L <br />0.0007 <br />Antimony <br />ND mg/L <br />0.0002 <br />Copper <br />ND mg/L <br />0.0002 <br />Thallium <br />ND mg/L <br />6E-05 <br />Lab ID: <br />LCS3-44269 <br />4 Laboratory Control Sample <br />Run: ICPMS4-C_150331A <br />04/01/15 00:50 <br />Aluminum <br />2.27 mg/L <br />0.030 <br />91 <br />85 <br />115 <br />Antimony <br />0.552 mg/L <br />0.0010 <br />110 <br />85 <br />115 <br />Copper <br />0.527 mg/L <br />0.0050 <br />105 <br />85 <br />115 <br />Thallium <br />0.451 mg/L <br />0.00050 <br />90 <br />85 <br />115 <br />Lab ID: <br />C15030881-006AMS3 <br />4 Sample Matrix Spike <br />Run: ICPMS4-C_150331A <br />04/01/15 02:07 <br />Aluminum <br />1.96 mg/L <br />0.030 <br />77 <br />70 <br />130 <br />Antimony <br />0.516 mg/L <br />0.0010 <br />103 <br />70 <br />130 <br />Copper <br />0.503 mg/L <br />0.0050 <br />100 <br />70 <br />130 <br />Thallium <br />0.467 mg/L <br />0.00050 <br />93 <br />70 <br />130 <br />Lab ID: <br />C15030881-006AMSD <br />4 Sample Matrix Spike Duplicate <br />Run: ICPMS4-C_150331A <br />04/01/15 02:27 <br />Aluminum <br />2.12 mg/L <br />0.030 <br />83 <br />70 <br />130 7.6 <br />20 <br />Antimony <br />0.546 mg/L <br />0.0010 <br />109 <br />70 <br />130 5.6 <br />20 <br />Copper <br />0.516 mg/L <br />0.0050 <br />103 <br />70 <br />130 2.7 <br />20 <br />Thallium <br />0.495 mg/L <br />0.00050 <br />99 <br />70 <br />130 5.9 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 7 of 17 <br />