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www.a walaD.can Helena, MT 877472 -0711 a Billings, MT 800- 735 -4489 a Casper, WY 868- 235 -0515 <br />vw SJ= flit f Gillette, WY 868 -686 -7175 a Rapid City, SD 686- 672 -1225 a College Station, TX 888 -680 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: <br />Cotter Corporation <br />Report Date: <br />10/18/13 <br />Project: <br />Schwartz GW 9/24/13 S27176 & S27177 <br />Work Order: <br />C13090929 <br />Analyte <br />Count Result Units <br />RL ° /.REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: E200.8 <br />6 Laboratory Control Sample <br />Batch 39179 <br />Sample ID: MB -39179 <br />6 Method Blank <br />Analytical Run: ICPMS4- C_131001A <br />Sample ID: ICV <br />6 Initial Calibration Verification Standard <br />ND <br />mg /L <br />10/02/13 00:32 <br />Antimony <br />0.0533 <br />mg /L <br />0.0010 <br />107 <br />90 <br />110 <br />Arsenic <br />0.0490 <br />mg /L <br />0.0010 <br />98 <br />90 <br />110 <br />Copper <br />0.0523 <br />mg /L <br />0.0010 <br />105 <br />90 <br />110 <br />Lead <br />0.0502 <br />mg /L <br />0.0010 <br />100 <br />90 <br />110 <br />Silver <br />0.0198 <br />mg /L <br />0.0010 <br />99 <br />90 <br />110 <br />Thallium <br />0.0500 <br />mg /L <br />0.0010 <br />100 <br />90 <br />110 <br />Method: E200.8 <br />6 Laboratory Control Sample <br />Batch 39179 <br />Sample ID: MB -39179 <br />6 Method Blank <br />10/02/13 02:09 <br />Run: ICPMS4- C_131001A 10/02/13 02:04 <br />Antimony <br />ND <br />mg /L <br />0.0002 <br />Arsenic <br />0.002 <br />mg /L <br />0.0004 <br />Copper <br />0.0002 <br />mg /L <br />0.0002 <br />Lead <br />ND <br />mg /L <br />4E -05 <br />Silver <br />0.0002 <br />mg /L <br />0.0002 <br />Thallium <br />ND <br />mg /L <br />6E -05 <br />Sample ID: LCS3 -39179 <br />6 Laboratory Control Sample <br />Run: ICPMS4- C_131001 A <br />10/02/13 02:09 <br />Antimony <br />0.513 mg /L <br />0.0010 <br />103 <br />85 115 <br />Arsenic <br />0.465 mg /L <br />0.0010 <br />93 <br />85 115 <br />Copper <br />0.481 mg /L <br />0.0050 <br />96 <br />85 115 <br />Lead <br />0.505 mg /L <br />0.0010 <br />101 <br />85 115 <br />Silver <br />0.0495 mg /L <br />0.0010 <br />99 <br />85 115 <br />Thallium <br />0.498 mg /L <br />0.00050 <br />100 <br />85 115 <br />Sample ID: C13090930 -001 BMS3 <br />6 Sample Matrix Spike <br />Run: ICPMS4- C_131001 A <br />10/02/13 02:42 <br />Antimony <br />0.505 mg /L <br />0.0010 <br />101 <br />70 130 <br />Arsenic <br />0 472 mg /L <br />0.0010 <br />94 <br />70 130 <br />Copper <br />0.488 mg /L <br />0.0050 <br />98 <br />70 130 <br />Lead <br />0.513 mg /L <br />0.0010 <br />103 <br />70 130 <br />Silver <br />0.0493 mg /L <br />0.0010 <br />99 <br />70 130 <br />Thallium <br />0.510 mg /L <br />0.00050 <br />102 <br />70 130 <br />Sample ID: C13090930 -001 BMSD3 <br />6 Sample Matrix Spike Duplicate <br />Run: ICPMS4- C_131001 A <br />10/02/13 02:45 <br />Antimony <br />0.499 mg /L <br />0.0010 <br />100 <br />70 130 <br />1.2 <br />20 <br />Arsenic <br />0.472 mg /L <br />0.0010 <br />94 <br />70 130 <br />0.1 <br />20 <br />Copper <br />0.491 mg /L <br />0.0050 <br />98 <br />70 130 <br />0.7 <br />20 <br />Lead <br />0.506 mg /L <br />0.0010 <br />101 <br />70 130 <br />1.4 <br />20 <br />Silver <br />0.0492 mg /L <br />0.0010 <br />98 <br />70 130 <br />0.2 <br />20 <br />Thallium <br />0.500 mg /L <br />0.00050 <br />100 <br />70 130 <br />1.9 <br />20 <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 />