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Trust our People. Trust our Data. <br />' l\G <br />Billings MT 800 735.4489 • Casper, WY 888.235.0515 <br />College Station. TX 888.690.2218 • Gillette. <br />WY 866.686.7175 • Helena, MT 877.472.0711 <br />QA/QC Summary Report <br />Prepared by Casper, WY <br />Branch <br />Client: Cotter Corporation <br />Report Date: <br />04/10/15 <br />Project: Schwartz -GW 3/25/15 S28144,S28145 <br />Work Order: <br />C15030828 <br />Analyte Count Result <br />Units <br />RL <br />%REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Clual <br />Method: E200.8 <br />Analytical Run: ICPMS2-C_150330A <br />Lab ID: ICV <br />5 Initial Calibration Verification <br />Standard <br />03/30/15 13:48 <br />Aluminum <br />0.0508 <br />mg/L <br />0.0010 <br />101 <br />90 <br />110 <br />Antimony <br />0.0509 <br />mg/L <br />0.0010 <br />102 <br />90 <br />110 <br />Copper <br />0.0509 <br />mg/L <br />0.0010 <br />102 <br />90 <br />110 <br />Silver <br />0.0204 <br />mg/L <br />0.0010 <br />102 <br />90 <br />110 <br />Thallium <br />0.0507 <br />mg/L <br />0.0010 <br />101 <br />90 <br />110 <br />Method: E200.8 <br />Batch: 44251 <br />Lab ID: MB -44251 <br />5 Method Blank <br />Run: ICPMS2-C_150330A <br />03/30/15 14:18 <br />Aluminum <br />0.001 <br />mg/L <br />0.0005 <br />Antimony <br />ND <br />mg/L <br />0.0002 <br />Copper <br />ND <br />mg/L <br />0.0004 <br />Silver <br />0.0001 <br />mg/L <br />2E-05 <br />Thallium <br />ND <br />mg/L <br />0.0001 <br />Lab ID: LCS3-44251 <br />5 Laboratory Control Sample <br />Run: ICPMS2-C_150330A <br />03/30/15 14:22 <br />Aluminum <br />2.46 <br />mg/L <br />0.030 <br />98 <br />85 <br />115 <br />Antimony <br />0.506 <br />mg/L <br />0.0010 <br />101 <br />85 <br />115 <br />Copper <br />0.459 <br />mg/L <br />0.0050 <br />92 <br />85 <br />115 <br />Silver <br />0.0477 <br />mg/L <br />0.0010 <br />95 <br />85 <br />115 <br />Thallium <br />0.511 <br />mg/L <br />0.00050 <br />102 <br />85 <br />115 <br />Lab ID: C15030825-001CMS3 <br />5 Sample Matrix <br />Spike <br />Run: ICPMS2-C_150330A <br />03/30/15 14:52 <br />Aluminum <br />2.36 <br />mg/L <br />0.030 <br />94 <br />70 <br />130 <br />Antimony <br />0.510 <br />mg/L <br />0.0010 <br />102 <br />70 <br />130 <br />Copper <br />0.478 <br />mg/L <br />0.0050 <br />96 <br />70 <br />130 <br />Silver <br />0.0474 <br />mg/L <br />0.0010 <br />95 <br />70 <br />130 <br />Thallium <br />0.504 <br />mg/L <br />0.00050 <br />101 <br />70 <br />130 <br />Lab ID: C15030825-001CMSD <br />5 Sample Matrix <br />Spike Duplicate <br />Run: ICPMS2-C_150330A <br />03/30/15 14:55 <br />Aluminum <br />2.39 <br />mg/L <br />0.030 <br />96 <br />70 <br />130 1.4 <br />20 <br />Antimony <br />0.518 <br />mg/L <br />0.0010 <br />104 <br />70 <br />130 1.5 <br />20 <br />Copper <br />0.483 <br />mg/L <br />0.0050 <br />97 <br />70 <br />130 1.0 <br />20 <br />Silver <br />0.0490 <br />mg/L <br />0.0010 <br />98 <br />70 <br />130 3.2 <br />20 <br />Thallium <br />0.516 <br />mg/L <br />0.00050 <br />103 <br />70 <br />130 2.5 <br />20 <br />Method: E200.8 <br />Batch: R197693 <br />Lab ID: LRB <br />4 Method Blank <br />Run: ICPMS2-C 150330A <br />03/30/15 14:06 <br />Aluminum <br />0.002 <br />mg/L <br />0.001 <br />Antimony <br />0.0001 <br />mg/L <br />6E-05 <br />Copper <br />ND <br />mg/L <br />0.0001 <br />Thallium <br />9E-06 <br />mg/L <br />9E-06 <br />Lab ID: LFB <br />4 Laboratory Fortified Blank <br />Run: ICPMS2-C_150330A <br />03/30/15 14:09 <br />Aluminum <br />0.0538 <br />mg/L <br />0.0010 <br />103 <br />85 <br />115 <br />Antimony <br />0.0528 <br />mg/L <br />0.0010 <br />105 <br />85 <br />115 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - <br />Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 5 of 15 <br />