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• �\• Trust our People. Trust our Data. fl Billings. MT 800.735.4489 • Casper, wY 888.235.0515 <br />l G� 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: 03/31/15 <br />Project: Schwartz -GW 3/18/15 S27837,S27838 Work Order: C15030640 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Analytical Run: ICPMS2-C_150330A <br />Lab ID: ICV Initial Calibration Verification Standard 03/30/15 13:48 <br />Silver 0.0204 mg/L 0.0010 102 90 110 <br />Method: <br />E200.8 <br />Batch: 44203 <br />Lab ID: <br />MB -44203 <br />Method Blank <br />Run: ICPMS2-C 150330A <br />03/30/15 15:40 <br />Silver <br />6E-05 mg/L <br />2E-05 <br />Lab ID: <br />LCS3-44203 <br />Laboratory Control Sample <br />Run: ICPMS2-C_150330A <br />03/30/15 15:43 <br />Silver <br />0.0519 mg/L <br />0.0010 <br />104 <br />85 115 <br />Lab ID: <br />C15030668-006CMS3 <br />Sample Matrix Spike <br />Run: ICPMS2-C_150330A <br />03/30/15 16:34 <br />Silver <br />0.0495 mg/L <br />0.0010 <br />99 <br />70 130 <br />Lab ID: <br />C15030668-006CMSD <br />Sample Matrix Spike Duplicate <br />Run: ICPMS2-C_150330A <br />03/30/15 16:36 <br />Silver <br />0.0504 mg/L <br />0.0010 <br />101 <br />70 130 1.9 <br />20 <br />Method: <br />E200.8 <br />Analytical Run: ICPMS4-C_150327A <br />Lab ID: <br />ICV <br />2 <br />Initial Calibration Verification Standard <br />03/27/15 13:46 <br />Antimony <br />0.0485 mg/L <br />0.0010 <br />97 <br />90 110 <br />Thallium <br />0.0455 mg/L <br />0.0010 <br />91 <br />90 110 <br />Method: <br />E200.8 <br />Batch: 44203 <br />Lab ID: <br />MB -44203 <br />2 <br />Method Blank <br />Run: ICPMS4-C 150327A <br />03/27/15 22:04 <br />Antimony <br />ND mg/L <br />0.0002 <br />Thallium <br />ND mg/L <br />6E-05 <br />Lab ID: <br />LCS3-44203 <br />2 <br />Laboratory Control Sample <br />Run: ICPMS4-C_150327A <br />03/27/15 22:10 <br />Antimony <br />0.558 mg/L <br />0.0010 <br />112 <br />85 115 <br />Thallium <br />0.505 mg/L <br />0.00050 <br />101 <br />85 115 <br />Lab ID: <br />015030669-001CMS3 <br />2 <br />Sample Matrix Spike <br />Run: ICPMS4-C_150327A <br />03/27/15 22:56 <br />Antimony <br />0.573 mg/L <br />0.0010 <br />115 <br />70 130 <br />Thallium <br />0.519 mg/L <br />0.00050 <br />104 <br />70 130 <br />Lab ID: <br />C15030669-001CMSD <br />2 <br />Sample Matrix Spike Duplicate <br />Run: ICPMS4-C_150327A <br />03/27/15 23:01 <br />Antimony <br />0.568 mg/L <br />0.0010 <br />114 <br />70 130 0.9 <br />20 <br />Thallium <br />0.502 mg/L <br />0.00050 <br />100 <br />70 130 3.5 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 6 of 16 <br />