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- www.vwulab.com Helena, MT 877- 472 -0711 - Billings, MT 808- 735 -4489 • Casper, WY 888- 235 -0515 <br />Gillette, WY 866- 686 -7175 -Rapid City, SD 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 />Report Date: <br />02/17/15 <br />Project: Schwartz - GW 1/28/15 S28066, S28069, S28071 <br />Work Order: <br />C15010751 <br />Analyte Count <br />Result Units <br />R <br />%REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: E200.8 <br />Analytical Run: ICPMS2- C_150130A <br />Lab ID: ICV 4 <br />Initial Calibration Verification Standard <br />01/30/15 09:04 <br />Aluminum <br />0.0491 mg /L <br />0.0010 <br />98 <br />90 <br />110 <br />Antimony <br />0.0481 mg /L <br />0.0010 <br />96 <br />90 <br />110 <br />Copper <br />0.0505 mg /L <br />0.0010 <br />101 <br />90 <br />110 <br />Thallium <br />0.0509 mg /L <br />0.0010 <br />102 <br />90 <br />110 <br />Method: E200.8 <br />Batch: R195700 <br />Lab ID: LRB 4 <br />Method Blank <br />Run: ICPMS2- C_150130A <br />01/30/15 10:03 <br />Aluminum <br />ND mg /L <br />0.001 <br />Antimony <br />ND mg /L <br />6E -05 <br />Copper <br />ND mg /L <br />0.0001 <br />Thallium <br />ND mg /L <br />9E -06 <br />Lab ID: LFB - filtered 4 <br />Laboratory Fortified Blank <br />Run: ICPMS2- C_150130A <br />01/30/15 10:07 <br />Aluminum <br />0.0524 mg /L <br />0.0010 <br />105 <br />85 <br />115 <br />Antimony <br />0.0508 mg /L <br />0.0010 <br />102 <br />85 <br />115 <br />Copper <br />0.0534 mg /L <br />0.0010 <br />107 <br />85 <br />115 <br />Thallium <br />0.0536 mg /L <br />0.0010 <br />107 <br />85 <br />115 <br />Lab ID: C15010727- 006BMS4 4 <br />Sample Matrix Spike <br />Run: ICPMS2- C_150130A <br />01/31/15 03:21 <br />Aluminum <br />0.0566 mg /L <br />0.030 <br />98 <br />70 <br />130 <br />Antimony <br />0.0532 mg /L <br />0.0010 <br />106 <br />70 <br />130 <br />Copper <br />0.0485 mg /L <br />0.0050 <br />96 <br />70 <br />130 <br />Thallium <br />0.0530 mg /L <br />0.00050 <br />106 <br />70 <br />130 <br />Lab ID: C15010727- 006BMSD 4 <br />Sample Matrix Spike Duplicate <br />Run: ICPMS2- C_150130A <br />01/31/15 03:25 <br />Aluminum <br />0.0620 mg /L <br />0.030 <br />108 <br />70 <br />130 9.0 <br />20 <br />Antimony <br />0.0532 mg /L <br />0.0010 <br />106 <br />70 <br />130 0.1 <br />20 <br />Copper <br />0.0485 mg /L <br />0.0050 <br />96 <br />70 <br />130 0.0 <br />20 <br />Thallium <br />0.0529 mg /L <br />0.00050 <br />106 <br />70 <br />130 0.2 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - <br />Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 9 of 23 <br />