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WWW.energylab.com ! Helena, MT 871472 -0711 • Billings, W 800 - 735 -4409 • Casper, WY 888- 235 -8515 <br />Awly" Ewokwo V= 1W j Gillette, WY 866 -086 -7175 a Rapid City, SO 888- 672 -1225 • College Station, TX 888- 690 -2216 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />12/05/13 <br />Project: Schwartz GW 11/12/13 <br />S27218 <br />Work Order: <br />C13110612 <br />Analyte Count Result <br />Units <br />RL <br />° /.REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: E200.8 <br />Analytical Run: ICPMS2- C_131125A <br />Sample ID: ICV <br />3 Initial Calibration Verification Standard <br />11/25/13 14:39 <br />Antimony <br />0.0530 <br />mg /L <br />00010 <br />106 <br />90 <br />110 <br />Copper <br />0.0508 <br />mg /L <br />0.0010 <br />102 <br />90 <br />110 <br />Silver <br />0.0205 <br />mg /L <br />0.0010 <br />102 <br />90 <br />110 <br />Method: E200.8 <br />Batch: 39812 <br />Sample ID: MB -39812 <br />3 Method Blank <br />Run: ICPMS2- C_131125A <br />11/25/13 15:27 <br />Antimony <br />0.001 <br />mg /L <br />0.0002 <br />Copper <br />ND <br />mg /L <br />0.0004 <br />Silver <br />0.0001 <br />mg /L <br />2E -05 <br />Sample ID: LCS3 -39812 <br />3 Laboratory Control Sample <br />Run: ICPMS2- C_131125A <br />11/25/13 15:30 <br />Antimony <br />0.588 <br />mg /L <br />0.0010 <br />117 <br />85 <br />115 <br />S <br />Copper <br />0.468 <br />mg /L <br />0.0050 <br />94 <br />85 <br />115 <br />Silver <br />0.0520 <br />mg /L <br />0.0010 <br />104 <br />85 <br />115 <br />- Response is above standard QA limit. This could indicate a high <br />bias for the sample results. <br />Since there were no detectable analyte responses, and the remainder of the <br />run QA is within acceptance range, this batch is approved <br />Sample ID: C13110647- 005CMS3 <br />3 Sample Matrix Spike <br />Run: ICPMS2- C_131125A <br />11/25/13 16:08 <br />Antimony <br />1.20 <br />mg /L <br />0.0033 <br />120 <br />70 <br />130 <br />Copper <br />1.54 <br />mg /L <br />0.0073 <br />90 <br />70 <br />130 <br />Silver <br />0.0916 <br />mg /L <br />0.0010 <br />92 <br />70 <br />130 <br />Sample ID: C13110647- 005CMSD3 <br />3 Sample Matrix Spike Duplicate <br />Run: ICPMS2- C_131125A <br />11/25/13 16:11 <br />Antimony <br />1.19 <br />mg /L <br />0.0033 <br />119 <br />70 <br />130 1.3 <br />20 <br />Copper <br />1.55 <br />mg /L <br />0.0073 <br />91 <br />70 <br />130 0.6 <br />20 <br />Silver <br />0.0928 <br />mg /L <br />0.0010 <br />93 <br />70 <br />130 1.3 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Page 11 of 21 <br />