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www.ene oab.com � Helena, W 077- 472 -0711 - Billings, MT 800 - 735 -4480 - Casper, WY 008- 235 -0515 <br />f IM Gillette, WY 066 -086 -7175 - Rapid City, SO 886 - 672 -1225 - College Station, TX 888- 600 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />E245.1 <br />Report Date: <br />02/03/14 <br />Project: Schwartz GW 12/23/13 S27306 <br />Work Order: <br />013120854 <br />Analyte <br />Count Result Units RL <br />° /GREC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: E245.1 <br />Run: CVAA_C203_140102A <br />Analytical Run: CVAA_C203_140102A <br />Sample ID: ICV <br />Initial Calibration Verification Standard <br />ND mg /L <br />01/02/14 13.31 <br />Mercury <br />0.00496 mg /L 0.00010 <br />99 90 110 <br />Sample ID: <br />Method: E245.1 <br />Laboratory Control Sample <br />Batch: 140102A <br />Sample ID: IPC <br />Instrument Performance Check Sample <br />Run: CVAA_C203_140102A <br />01/02/14 13:34 <br />Mercury <br />0.00509 mg /L 0.00010 <br />102 95 105 <br />85 115 <br />Method: <br />E245.1 <br />Batch: 40222 <br />Sample ID: <br />MB -40222 <br />Method Blank <br />Run: CVAA_C203_140128A <br />Run: CVAA_C203_140102A <br />01/02/14 13:51 <br />Mercury <br />0.00512 mg /L <br />ND mg /L <br />7E -05 <br />95 105 <br />Method: <br />Sample ID: <br />LCS -40222 <br />Laboratory Control Sample <br />Run: CVAA_C203_140102A <br />01/02/14 13:53 <br />Mercury <br />Method Blank <br />0.00458 mg /L <br />0.00010 <br />92 <br />85 115 <br />Mercury <br />Sample ID: <br />C13120819- 001BMS <br />Sample Matrix Spike <br />Run: CVAA_C203_140102A <br />01/02/14 14:05 <br />Mercury <br />Laboratory Control Sample <br />0.00536 mg /L <br />0.00010 <br />107 <br />70 130 <br />Mercury <br />Sample ID: <br />C13120819- 001BMSD <br />Sample Matrix Spike Duplicate <br />102 <br />85 115 <br />Run: CVAA_C203_140102A <br />01/02/14 14:07 <br />Mercury <br />Sample Matrix Spike <br />0.00538 mg /L <br />0.00010 <br />108 <br />70 130 0.5 <br />10 <br />Method: <br />E245.1 <br />0.00010 <br />103 <br />70 130 <br />Analytical Run: CVAA_C203_140128A <br />Sample ID: <br />ICV <br />Initial Calibration Verification Standard <br />01/28/14 15:22 <br />Mercury <br />Mercury <br />0.00459 mg /L <br />0.00010 <br />92 <br />90 110 <br />70 130 4.5 <br />Method: <br />E245.1 <br />Batch: 140128A <br />Sample ID: <br />IPC <br />Instrument Performance Check Sample <br />Run: CVAA_C203_140128A <br />01/28/14 15:25 <br />Mercury <br />0.00512 mg /L <br />0.00010 <br />102 <br />95 105 <br />Method: <br />E245.1 <br />Batch: 40477 <br />Sample ID: <br />MB -40477 <br />Method Blank <br />Run: CVAA_C203_140128A <br />01/28/14 15:29 <br />Mercury <br />ND mg /L <br />7E -05 <br />Sample ID: <br />LCS -40477 <br />Laboratory Control Sample <br />Run: CVAA_C203_140128A <br />01/28/14 15:31 <br />Mercury <br />0.00511 mg /L <br />0.00010 <br />102 <br />85 115 <br />Sample ID: <br />C13120854- 001CMS <br />Sample Matrix Spike <br />Run: CVAA_C203_140128A <br />01/28/14 15:35 <br />Mercury <br />0.00517 mg /L <br />0.00010 <br />103 <br />70 130 <br />Sample ID: <br />C13120854- 001CMSD <br />Sample Matrix Spike Duplicate <br />Run: CVAA_C203_140128A <br />01/28/1415:37 <br />Mercury <br />0.00494 mg /L <br />0.00010 <br />99 <br />70 130 4.5 <br />10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 19 of 31 <br />