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Trust our People. Trust our Data. Billings, MT 800.735.4489 • Casper, WY 888.235.0515 <br />vw.energ}Iab' 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 />04/16/15 <br />Project: <br />Schwartz -GW 3/27/15 S28168,S28169 <br />Run: ICP4-C 150401A <br />Aluminum <br />Work Order: <br />C15030895 <br />Analyte <br />Count Result Units RL <br />%REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: <br />E200.7 <br />0.945 mg/L <br />0.10 <br />94 85 115 <br />Analytical Run: ICP4-C_150401A <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />Run: ICP4-C_150401A <br />Aluminum <br />04/01/15 13:04 <br />Aluminum <br />90 70 130 <br />4.90 mg/L 0.10 <br />98 <br />95 <br />105 <br />Run: ICP4-C_150401A <br />Lab ID: <br />ICSA <br />Interference Check Sample A <br />0.030 <br />90 70 130 <br />04/01/15 13:23 <br />Aluminum <br />464 mg/L 0.10 <br />93 <br />80 <br />120 <br />Lab ID: <br />ICSAB <br />Interference Check Sample AB <br />04/01/15 13:28 <br />Aluminum <br />461 mg/L 0.10 <br />92 <br />80 <br />120 <br />Method: <br />E200.7 <br />Lab ID: <br />MB -150401A <br />Method Blank <br />Run: ICP4-C 150401A <br />Aluminum <br />ND mg/L <br />0.01 <br />Lab ID: <br />LFB-150401A <br />Laboratory Fortified Blank <br />Run: ICP4-C_150401A <br />Aluminum <br />0.945 mg/L <br />0.10 <br />94 85 115 <br />Lab ID: <br />C15020420-003CMS2 <br />Sample Matrix Spike <br />Run: ICP4-C_150401A <br />Aluminum <br />1.83 mg/L <br />0.030 <br />90 70 130 <br />Lab ID: <br />C15020420-003CMSD <br />Sample Matrix Spike Duplicate <br />Run: ICP4-C_150401A <br />Aluminum <br />1.84 mg/L <br />0.030 <br />90 70 130 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Batch: R197784 <br />04/01/15 13:47 <br />04/01/15 13:51 <br />04/01/15 13:59 <br />04/01/15 14:03 <br />0.8 20 <br />Page 5 of 17 <br />