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www.enefgylab.com ! Helena, MT 877- 472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888 - 235 -8515 <br />IaWMEiaae =Rm IM Gillette, WY 866 - 606 -7175 • Rapid City, SD 888- 672 -1225 • College Station, TX 888- 690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />4 Sample Matrix Spike <br />Batch: R181437 <br />Sample ID: LRB <br />Report Date: <br />12/05/13 <br />Project: Schwartz GW 11/15/13 S27276 <br />Run: ICPMS4 -C 131202A 12/02/13 14:55 <br />Antimony <br />0.0004 mg /L <br />0.0001 <br />Work Order: <br />C13110695 <br />FAnalyte <br />Count Result <br />Units <br />RL <br />° /.REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: E200.8 <br />96 <br />Thallium <br />9E -05 mg /L <br />6E -05 <br />Thallium <br />Analytical Run: ICPMS4- C_131202A <br />Sample ID: ICV <br />4 Initial Calibration Verification Standard <br />70 130 <br />Run: ICPMS4- C_131202A 12/02/13 15:00 <br />12/03/13 02:25 <br />Antimony <br />0.0537 <br />mg /L <br />0.0010 <br />107 <br />90 <br />110 <br />104 <br />Copper <br />0.0520 <br />mg /L <br />0.0010 <br />104 <br />90 <br />110 <br />0.0534 mg /L <br />Molybdenum <br />0.0496 <br />mg /L <br />0.0010 <br />99 <br />90 <br />110 <br />94 <br />Thallium <br />0.0485 <br />mg /L <br />0.0010 <br />97 <br />90 <br />110 <br />70 130 <br />Method: E200.8 <br />4 Sample Matrix Spike <br />Batch: R181437 <br />Sample ID: LRB <br />4 Method Blank <br />Antimony <br />0.293 mg /L <br />Run: ICPMS4 -C 131202A 12/02/13 14:55 <br />Antimony <br />0.0004 mg /L <br />0.0001 <br />Copper <br />Copper <br />ND mg /L <br />3E -05 <br />70 130 <br />Molybdenum <br />ND mg /L <br />3E -05 <br />0.0010 <br />96 <br />Thallium <br />9E -05 mg /L <br />6E -05 <br />Thallium <br />0.261 mg /L <br />Sample ID: LFB <br />4 Laboratory Fortified Blank <br />70 130 <br />Run: ICPMS4- C_131202A 12/02/13 15:00 <br />Antimony <br />0.0510 mg /L <br />0.0010 <br />101 <br />85 115 <br />Copper <br />0.0519 mg /L <br />0.0010 <br />104 <br />85 115 <br />Molybdenum <br />0.0514 mg /L <br />0.0010 <br />103 <br />85 115 <br />Thallium <br />0.0534 mg /L <br />0.0010 <br />107 <br />85 115 <br />Sample ID: C13110855 -001 BMS4 <br />4 Sample Matrix Spike <br />Run: ICPMS4- C_131202A <br />12/03/13 04:18 <br />Antimony <br />0.293 mg /L <br />0.0010 <br />117 <br />70 130 <br />Copper <br />0.276 mg /L <br />0.0050 <br />109 <br />70 130 <br />Molybdenum <br />0.242 mg /L <br />0.0010 <br />96 <br />70 130 <br />Thallium <br />0.261 mg /L <br />0.00050 <br />104 <br />70 130 <br />Sample ID: C13110855 -001 BMSD4 <br />4 Sample Matrix Spike Duplicate <br />Run: ICPMS4- C_131202A <br />12/03/13 04:22 <br />Antimony <br />0.333 mg /L <br />0.0010 <br />133 <br />70 130 <br />13 <br />20 S <br />Copper <br />0.310 mg /L <br />0.0050 <br />122 <br />70 130 <br />11 <br />20 <br />Molybdenum <br />0.238 mg /L <br />0.0010 <br />94 <br />70 130 <br />1.7 <br />20 <br />Thallium <br />0.269 mg /L <br />0.00050 <br />108 <br />70 130 <br />3.2 <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 12 of 21 <br />