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www.cmdab.com ( Helena, W 871 472 -0711 • Billings, MT 881- 735 -4489 • Casper, WY 888- 235 -0515 <br />OcIffmaA 't JI Gillette, WY 866- 686 -7175 • Rapid City, SD 886 -672 -1225 • College Station, TX 888 -696 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: <br />Cotter Corporation <br />Report Date: <br />03/10/15 <br />Project: <br />Schwartz -GW 01 -30 -15 <br />S28127, <br />S28129 <br />Work Order: <br />C15020026 <br />Analyte <br />Count Result <br />Units <br />RL <br />%REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: <br />E200.8 <br />Analytical Run: ICPMS2- C_150203B <br />Lab ID: <br />ICV <br />4 <br />Initial Calibration <br />Verification Standard <br />02/03/15 15:46 <br />Aluminum <br />0.0511 <br />mg /L <br />0.0010 <br />102 <br />90 <br />110 <br />Antimony <br />0.0480 <br />mg /L <br />0.0010 <br />96 <br />90 <br />110 <br />Copper <br />0.0498 <br />mg /L <br />0.0010 <br />100 <br />90 <br />110 <br />Thallium <br />0.0510 <br />mg /L <br />0.0010 <br />102 <br />90 <br />110 <br />Method: <br />E200.8 <br />Batch: R195824 <br />Lab ID: <br />LRB <br />4 <br />Method Blank <br />Run: ICPMS2 -C 1502038 <br />02/03/15 16:13 <br />Aluminum <br />ND <br />mg /L <br />0.001 <br />Antimony <br />0.0001 <br />mg /L <br />6E -05 <br />Copper <br />ND <br />mg /L <br />0.0001 <br />Thallium <br />ND <br />mg /L <br />9E -06 <br />Lab ID: <br />LFB - filtered <br />4 <br />Laboratory Fortified <br />Blank <br />Run: ICPMS2- C_150203B <br />02/03/15 16:17 <br />Aluminum <br />0.0543 <br />mg /L <br />0.0010 <br />109 <br />85 <br />115 <br />Antimony <br />0.0503 <br />mg /L <br />0.0010 <br />100 <br />85 <br />115 <br />Copper <br />0.0538 <br />mg /L <br />0.0010 <br />108 <br />85 <br />115 <br />Thallium <br />0.0540 <br />mg /L <br />0.0010 <br />108 <br />85 <br />115 <br />Lab ID: <br />015020024- 001BMS4 <br />4 <br />Sample Matrix Spike <br />Run: ICPMS2- C_150203B <br />02/03/15 21:52 <br />Aluminum <br />0.0511 <br />mg /L <br />0.030 <br />95 <br />70 <br />130 <br />Antimony <br />0.0537 <br />mg /L <br />0.0010 <br />107 <br />70 <br />130 <br />Copper <br />0.0556 <br />mg /L <br />0.0050 <br />102 <br />70 <br />130 <br />Thallium <br />0.0530 <br />mg /L <br />0.00050 <br />106 <br />70 <br />130 <br />Lab ID: <br />C15020024- 001BMSD <br />4 <br />Sample Matrix Spike <br />Duplicate <br />Run: ICPMS2- C_150203B <br />02/03/15 21:55 <br />Aluminum <br />0.0505 <br />mg /L <br />0.030 <br />93 <br />70 <br />130 1.3 <br />20 <br />Antimony <br />0.0540 <br />mg /L <br />0.0010 <br />108 <br />70 <br />130 0.7 <br />20 <br />Copper <br />0.0557 <br />mg /L <br />0.0050 <br />103 <br />70 <br />130 0.2 <br />20 <br />Thallium <br />0.0533 <br />mg /L <br />0.00050 <br />107 <br />70 <br />130 0.5 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 6 of 18 <br />