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www.emgoab.com Helena, MT 877- 472 -0711 - Billings, W 860- 735 -4489 - Casper, WY 888- 235 -0515 <br />Asa&" Ewakm Sm liv Gillette, WY 866 -686 -7175 - Rapid City, SD 886- 672 -1225 - College Station, TX 888- 680 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 10/14/13 <br />PProject: Schwartz GW 9/19/13 S27162 Work Order: C13090821 <br />Analyte Count Result Units RL ° /GREC Low Limit High Limit RPD RPDLimit Qual <br />Method: <br />E200.8 <br />Analytical Run: <br />ICPMS4- C_131007A <br />Sample ID: <br />ICV 5 Initial Calibration Verification Standard <br />10/08/13 01:03 <br />Antimony <br />0.0518 <br />mg /L <br />0.0010 <br />104 <br />90 <br />110 <br />Copper <br />0.0526 <br />mg /L <br />0.0010 <br />105 <br />90 <br />110 <br />Thallium <br />0.0514 <br />mg /L <br />0.0010 <br />103 <br />90 <br />110 <br />Uranium <br />0.0498 <br />mg /L <br />0.00030 <br />100 <br />90 <br />110 <br />Zinc <br />0.0536 <br />mg /L <br />0.0010 <br />107 <br />90 <br />110 <br />Method: <br />E200.8 <br />Batch. R179250 <br />Sample ID: <br />LRB 5 Method Blank <br />Run: ICPMS4- C_131007A <br />10/07/13 14:58 <br />Antimony <br />0.0002 <br />mg /L <br />0.0001 <br />Copper <br />ND <br />mg /L <br />3E -05 <br />Thallium <br />ND <br />mg /L <br />6E -05 <br />Uranium <br />ND <br />mg /L <br />9E -06 <br />Zinc <br />ND <br />mg /L <br />0.0002 <br />Sample ID: <br />LFB 5 Laboratory Fortified <br />Blank <br />Run: ICPMS4- C_131007A <br />10/07/13 15:02 <br />Antimony <br />0.0508 <br />mg /L <br />0.0010 <br />101 <br />85 <br />115 <br />Copper <br />0.0544 <br />mg /L <br />0.0010 <br />109 <br />85 <br />115 <br />Thallium <br />0.0541 <br />mg /L <br />00010 <br />108 <br />85 <br />115 <br />Uranium <br />0.0535 <br />mg /L <br />0.00030 <br />107 <br />85 <br />115 <br />Zinc <br />0.0563 <br />mg /L <br />0.0010 <br />113 <br />85 <br />115 <br />Sample ID: <br />C13090822- 001CMS4 5 Sample Matrix <br />Spike <br />Run: ICPMS4- C_131007A <br />10/08/13 02:24 <br />Antimony <br />0.0989 <br />mg /L <br />0.0010 <br />99 <br />70 <br />130 <br />Copper <br />0.100 <br />mg /L <br />0.0050 <br />97 <br />70 <br />130 <br />Thallium <br />0.112 <br />mg /L <br />0.00050 <br />112 <br />70 <br />130 <br />Uranium <br />3.44 <br />mg /L <br />0.00030 <br />70 <br />130 <br />A <br />Zinc <br />0.120 <br />mg /L <br />0.010 <br />101 <br />70 <br />130 <br />Sample ID: <br />C13090822 -001 CMSD4 5 Sample Matrix <br />Spike Duplicate <br />Run: ICPMS4- C_131007A <br />10/08/13 02:28 <br />Antimony <br />0.103 <br />mg /L <br />0.0010 <br />103 <br />70 <br />130 4.3 <br />20 <br />Copper <br />0.107 <br />mg /L <br />0.0050 <br />104 <br />70 <br />130 6.3 <br />20 <br />Thallium <br />0.111 <br />mg /L <br />0.00050 <br />111 <br />70 <br />130 0.4 <br />20 <br />Uranium <br />3.45 <br />mg /L <br />0.00030 <br />70 <br />130 0.2 <br />20 A <br />Zinc <br />0.120 <br />mg /L <br />0.010 <br />101 <br />70 <br />130 0.2 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - Not detected at the reporting limit. <br />A - The analyte level was greater than four times the spike level. In <br />accordance with the method % recovery is not calculated. <br />MDC - Minimum detectable concentration <br />Page 11 of 21 <br />