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_. —..------ <br />Trust our People. Trust our Data. r 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 />Batch: R199064 <br />Report Date: <br />05/07/15 <br />Project: <br />Schwartz - GW 4/14/15 S27854, S27857 <br />05/06/15 12:25 <br />Zinc <br />Work Order: <br />C15040486 <br />Analyte <br />Count Result Units RL <br />%REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: <br />E200.8 <br />0.0581 mg/L <br />0.0010 116 85 115 <br />S <br />Analytical Run: ICPMS2-C_150506A <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />05/06/15 12:31 <br />Zinc <br />05/06/15 11:51 <br />Zinc <br />0.0498 mg/L 0.0010 <br />100 <br />90 <br />110 <br />05/07/15 00:02 <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />0.010 97 70 130 <br />Lab ID: <br />05/06/15 17:08 <br />Zinc <br />Run: ICPMS2-C_150506A <br />0.0498 mg/L 0.0010 <br />100 <br />90 <br />110 <br />0.010 95 70 130 2.0 <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />05/06/15 19:29 <br />Zinc <br />0.0507 mg/L 0.0010 <br />101 <br />90 <br />110 <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />05/06/15 22:52 <br />Zinc <br />0.0514 mg/L 0.0010 <br />103 <br />90 <br />110 <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />05/07/15 01:42 <br />Zinc <br />0.0506 mg/L 0.0010 <br />101 <br />90 <br />110 <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />05/07/15 04:24 <br />Zinc <br />0.0493 mg/L 0.0010 <br />99 <br />90 <br />110 <br />Lab ID: <br />ICV <br />Initial Calibration Verification Standard <br />05/07/15 06:04 <br />Zinc <br />0.0494 mg/L 0.0010 <br />99 <br />90 <br />110 <br />Method: <br />E200.8 <br />Batch: R199064 <br />Lab ID: <br />LRB <br />Method Blank <br />Run: ICPMS2-C 150506A <br />05/06/15 12:25 <br />Zinc <br />ND mg/L <br />0.0006 <br />Lab ID: <br />LFB <br />Laboratory Fortified Blank <br />Run: ICPMS2-C_150506A <br />05/06/15 12:28 <br />Zinc <br />0.0581 mg/L <br />0.0010 116 85 115 <br />S <br />Lab ID: <br />LFB <br />Laboratory Fortified Blank <br />Run: ICPMS2-C_150506A <br />05/06/15 12:31 <br />Zinc <br />0.0506 mg/L <br />0.0010 101 85 115 <br />Lab ID: <br />C15050036-005BMS4 <br />Sample Matrix Spike <br />Run: ICPMS2-C_150506A <br />05/07/15 00:02 <br />Zinc <br />0.0500 mg/L <br />0.010 97 70 130 <br />Lab ID: <br />015050036-005BMSD <br />Sample Matrix Spike Duplicate <br />Run: ICPMS2-C_150506A <br />05/07/15 00:05 <br />Zinc <br />0.0490 mg/L <br />0.010 95 70 130 2.0 <br />20 <br />Qualifiers: <br />RL - Analyte <br />reporting limit. <br />ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />S - Spike recovery outside of advisory limits. <br />Page 17 of 30 <br />