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;91 AWWW www.vweab.com Helena, W 877- 472 -0711 - Billings, W 800 -735 -4489 - Casper, WY 888- 235 -0515 <br />N°aSk' I Gillette, WY 866 -686 -7175 - Rapid City, SO 886- 672 -1225 - College Station, TX 888 - 690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Sample ID: LRB <br />5 Method Blank <br />Antimony <br />0.0005 mg /L <br />Report Date: <br />07/16/13 <br />Project: Schwartz GW 6/20/1 S27008 & S2009 <br />8E -05 mg /L <br />Thallium <br />ND mg /L <br />Uranium <br />Work Order: <br />C13060813 <br />FAnalyte <br />Count Result <br />Units <br />RL <br />° /6REC <br />Low Limit <br />High Limit RPD <br />RPDLim=Qual <br />Method: E200.8 <br />Uranium <br />0.0539 mg /L <br />Sample ID: C13060845- 002BMS4 <br />5 Sample Matrix Spike <br />Antimony <br />Analytical Run: ICPMS4- C- 130708A <br />Sample ID: ICV <br />5 Initial Calibration <br />Verification <br />Standard <br />Thallium <br />0.0503 mg /L <br />Uranium <br />07/08/13 12:35 <br />Antimony <br />0.0523 <br />mg /L <br />0.0010 <br />105 <br />90 <br />110 <br />0.0485 mg /L <br />Copper <br />0.0492 <br />mg /L <br />0.0010 <br />98 <br />90 <br />110 <br />20 <br />Molybdenum <br />0.0491 <br />mg /L <br />0.0010 <br />98 <br />90 <br />110 <br />100 <br />Thallium <br />0.0505 <br />mg /L <br />0.0010 <br />101 <br />90 <br />110 <br />130 <br />Uranium <br />0.0494 <br />mg /L <br />0.00030 <br />99 <br />90 <br />110 <br />Method: E200.8 <br />Sample ID: LRB <br />5 Method Blank <br />Antimony <br />0.0005 mg /L <br />Copper <br />ND mg /L <br />Molybdenum <br />8E -05 mg /L <br />Thallium <br />ND mg /L <br />Uranium <br />1 E -05 mg /L <br />Sample ID: LFB <br />5 Laboratory Fortified Blank <br />Antimony <br />0.0534 mg /L <br />Copper <br />0.0520 mg /L <br />Molybdenum <br />0.0537 mg /L <br />Thallium <br />0.0542 mg /L <br />Uranium <br />0.0539 mg /L <br />Sample ID: C13060845- 002BMS4 <br />5 Sample Matrix Spike <br />Antimony <br />0.0532 mg /L <br />Copper <br />0.0469 mg /L <br />Molybdenum <br />0.0488 mg /L <br />Thallium <br />0.0503 mg /L <br />Uranium <br />0.0883 mg /L <br />Sample ID: C13060845- 002BMSD4 <br />5 Sample Matrix Spike Duplicate <br />Antimony <br />0.0524 mg /L <br />Copper <br />0.0464 mg /L <br />Molybdenum <br />0.0485 mg /L <br />Thallium <br />0.0502 mg /L <br />Uranium <br />0.0890 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 13 of 23 <br />Batch- R175671 <br />130708A <br />Run: ICPMS4 -C 130708A 07/08/1313:35 <br />0.0001 <br />106 <br />70 <br />3E -05 <br />3E -05 <br />93 <br />70 <br />6E -05 <br />9E -06 <br />97 <br />70 <br />130 <br />Run: ICPMS4- C_130708A 07/08/13 13:39 <br />0.0010 <br />106 <br />85 115 <br />0.0010 <br />104 <br />85 115 <br />0.0010 <br />107 <br />85 115 <br />0.0010 <br />108 <br />85 115 <br />0.00030 <br />108 <br />85 115 <br />ND - Not detected at the reporting limit. <br />Page 13 of 23 <br />Run: ICPMS4- C- <br />130708A <br />07/08/13 22:07 <br />0.0010 <br />106 <br />70 <br />130 <br />0.0050 <br />93 <br />70 <br />130 <br />0.0010 <br />97 <br />70 <br />130 <br />0.00050 <br />101 <br />70 <br />130 <br />0.00030 <br />101 <br />70 <br />130 <br />Run: ICPMS4- C_130708A <br />07/08/13 22:28 <br />0.0010 <br />105 <br />70 <br />130 <br />1.4 <br />20 <br />0.0050 <br />93 <br />70 <br />130 <br />0.9 <br />20 <br />0.0010 <br />96 <br />70 <br />130 <br />0.7 <br />20 <br />0.00050 <br />100 <br />70 <br />130 <br />0.3 <br />20 <br />0.00030 <br />102 <br />70 <br />130 <br />0.7 <br />20 <br />ND - Not detected at the reporting limit. <br />Page 13 of 23 <br />