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www.emz4ab.com '"r f Helena, MT 011- 472 -0711 a Billings, MT 600 -735 -4409 • Casper, WY 888- 235 -8515 <br />A= 1952 Gillette, WY 866 -686 -7175 • Rapid City, SD 888 -672 -1225 • College Station, x 888 - 600 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 02/03/14 <br />Project: Schwartz GW 12/23/13 S27306 Work Order: 013120854 <br />Analyte Count Result Units RL ° /.REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 <br />4 Sample Matrix Spike <br />Sample ID: LRB <br />Batch: 40176 <br />Sample ID: MB -40176 <br />Analytical Run: ICPMS4- C_131230A <br />Sample ID: ICV <br />7 Initial Calibration Verification <br />Standard <br />Arsenic <br />0.0005 mg /L <br />12/30/13 12:17 <br />Antimony <br />0.0537 <br />mg /L <br />0.0010 <br />107 <br />90 <br />110 <br />Arsenic <br />0.0506 <br />mg /L <br />0.0010 <br />101 <br />90 <br />110 <br />Copper <br />0.0508 <br />mg /L <br />0.0010 <br />102 <br />90 <br />110 <br />Lead <br />0.0503 <br />mg /L <br />0.0010 <br />101 <br />90 <br />110 <br />Molybdenum <br />0.0497 <br />mg /L <br />0.0010 <br />99 <br />90 <br />110 <br />Thallium <br />0.0498 <br />mg /L <br />0.0010 <br />100 <br />90 <br />110 <br />Uranium <br />0.0502 <br />mg /L <br />0.00030 <br />100 <br />90 <br />110 <br />Method: E200.8 <br />4 Sample Matrix Spike <br />Sample ID: LRB <br />Batch: 40176 <br />Sample ID: MB -40176 <br />4 Method Blank <br />Arsenic <br />0.499 mg /L <br />Run: ICPMS4- C_131230A 12/31/13 03:59 <br />Arsenic <br />0.0005 mg /L <br />0.0004 <br />ND <br />Copper <br />Copper <br />ND mg /L <br />0.0002 <br />70 130 <br />ND <br />Lead <br />ND mg /L <br />4E -05 <br />0.0010 <br />105 <br />Thallium <br />ND mg /L <br />6E -05 <br />Thallium <br />0.502 mg /L <br />Sample ID: LCS3 -40176 <br />4 Laboratory Control Sample <br />70 130 <br />0.0534 <br />Run: ICPMS4- C_131230A 12/31/13 04:03 <br />Arsenic <br />0.512 mg /L <br />0.0010 <br />102 <br />85 115 <br />Copper <br />0.508 mg /L <br />0.0050 <br />102 <br />85 115 <br />Lead <br />0.508 mg /L <br />0.0010 <br />102 <br />85 115 <br />Thallium <br />0.480 mg /L <br />0.00050 <br />96 <br />85 115 <br />Sample ID: C13120854- 001CMS3 <br />4 Sample Matrix Spike <br />Sample ID: LRB <br />Run: ICPMS4- C_131230A <br />12/31/13 04:15 <br />Arsenic <br />0.499 mg /L <br />0.0010 <br />97 <br />70 130 <br />Copper <br />ND <br />Copper <br />0.474 mg /L <br />0.0050 <br />95 <br />70 130 <br />ND <br />mg /L <br />Lead <br />0.527 mg /L <br />0.0010 <br />105 <br />70 130 <br />Antimony <br />0.0502 <br />Thallium <br />0.502 mg /L <br />0.00050 <br />100 <br />70 130 <br />0.0534 <br />mg /L <br />Sample ID: C13120854- 001CMSD3 <br />4 Sample Matrix Spike Duplicate <br />Run: ICPMS4- C_131230A <br />12/31/13 04:19 <br />Arsenic <br />0.545 mg /L <br />0.0010 <br />106 <br />70 130 <br />8.8 <br />20 <br />Copper <br />0.518 mg /L <br />0.0050 <br />103 <br />70 130 <br />8.8 <br />20 <br />Lead <br />0.523 mg /L <br />0.0010 <br />104 <br />70 130 <br />0.8 <br />20 <br />Thallium <br />0.500 mg /L <br />0.00050 <br />100 <br />70 130 <br />0.4 <br />20 <br />Method: E200.8 <br />Sample ID: LRB <br />6 Method Blank <br />Antimony <br />0.0004 <br />mg /L <br />Arsenic <br />ND <br />mg /L <br />Copper <br />ND <br />mg /L <br />Molybdenum <br />7E -05 <br />mg /L <br />Thallium <br />ND <br />mg /L <br />Uranium <br />ND <br />mg /L <br />Sample ID: LFB <br />6 Laboratory Fortified Blank <br />Antimony <br />0.0502 <br />mg /L <br />Arsenic <br />0.0475 <br />mg /L <br />Copper <br />0.0534 <br />mg /L <br />Batch: R182158 <br />Run: ICPMS4 -C 131230A 12/30/1313:16 <br />0.0001 <br />5E -05 <br />3E -05 <br />3E -05 <br />6E -05 <br />9E -06 <br />Run: ICPMS4- C_131230A <br />0.0010 100 85 115 <br />0.0010 95 85 115 <br />0.0010 107 85 115 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit <br />MDC - Minimum detectable concentration <br />12/30/13 13:20 <br />Page 17 of 31 <br />