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- www.e n rdab.com Helena, MT 877- 472 -0711 • Billings, W 800- 735 -4489 • Casper, WY 888 -235 -0515 <br />'w-qw- v J Gillette, WY 866 -686 -7175 • Rapid City, SC 886 - 672 -1225 • College Station, TX 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 18 of 27 <br />Revised Date: 03/06/14 <br />Client: <br />Cotter Corporation <br />Report Date: <br />02/24/14 <br />Project: <br />Schwartz -SW 02/04/14 S27321 <br />Work Order: <br />C14020109 <br />[Analyte <br />Count Result Units <br />RL <br />0/6REC <br />Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: <br />E245.1 <br />Analytical Run: CVAA_C203_140207A <br />Sample ID: <br />ICV <br />Initial Calibration Verification Standard <br />02/07/14 15:13 <br />Mercury <br />0.00454 mg /L <br />0.00010 <br />91 <br />90 110 <br />Method: <br />E245.1 <br />Batch: 140207A <br />Sample ID: <br />IPC <br />Instrument Performance Check Sample <br />Run: CVAA_C203_140207A <br />02/07/14 15:17 <br />Mercury <br />0.00507 mg /L <br />000010 <br />101 <br />95 105 <br />Method: <br />E245.1 <br />Batch: 40571 <br />Sample ID: <br />MB -40571 <br />Method Blank <br />Run: CVAA C203 140207A <br />02/07/14 15:20 <br />Mercury <br />ND mg /L <br />7E -05 <br />Sample ID: <br />LCS -40571 <br />Laboratory Control Sample <br />Run: CVAA_C203_140207A <br />02/07/14 15:26 <br />Mercury <br />0.00459 mg /L <br />0.00010 <br />92 <br />80 120 <br />Sample ID: <br />C14020109 -001 DMS <br />Sample Matrix Spike <br />Run. CVAA_C203_140207A <br />02/07/14 15:51 <br />Mercury <br />0.00504 mg /L <br />0.00010 <br />101 <br />70 130 <br />Sample ID: <br />C14020109 -001 DMSD <br />Sample Matrix Spike Duplicate <br />Run: CVAA_C203_140207A <br />02/07/14 15:53 <br />Mercury <br />0.00537 mg /L <br />0.00010 <br />107 <br />70 130 6.3 <br />10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 18 of 27 <br />