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www.ewBlab.corn f Helena, NT 877 - 472 -0711 • Billings, W 600- 735 -4489 • Casper, WY 888- 235 -0515 <br />1W ) Gillette, WY 866 -686 -7175 • Rapid City, SO 888 -672 -1225 • College Station, Tx 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />E200.8 <br />ICV <br />Initial Calibration Verification Standard <br />0.0201 mg /L 0.0010 <br />101 <br />Analytical Run: ICPMS2- C_130523A <br />05/23/13 14:32 <br />90 110 <br />Method: <br />Report Date: <br />06/06/13 <br />Project: Schwartz SW 05/08/13 S26872 <br />Batch: 37487 <br />Sample ID: <br />Work <br />Order: <br />013050363 <br />[Analyte <br />Count Result <br />Units <br />RL <br />° /.REC <br />Low Limit <br />High Limit <br />RPD <br />RPDLimit Qual <br />Method: E200.8 <br />Sample ID: <br />LCS3 -37487 <br />Laboratory Control Sample <br />Run: ICPMS2- C_130523A <br />05/24/13 00:24 <br />Batch: 37487 <br />Sample ID: C13050351- 002AMS3 <br />10 Sample Matrix Spike <br />0.0010 <br />103 <br />Run: ICPMS2- C_130515A <br />05/16/13 06:54 <br />Thallium <br />0.50 <br />mg /L <br />0.00040 <br />101 <br />70 <br />130 <br />0.0492 mg /L <br />Uranium <br />0.55 <br />mg /L <br />0.00030 <br />110 <br />70 <br />130 <br />Sample ID: 013050351- 002AMSD3 10 Sample Matrix Spike Duplicate <br />05/24/13 00.39 <br />Silver <br />Run: ICPMS2- C_130515A <br />0.0496 mg /L <br />05/16/13 06:57 <br />Aluminum <br />2.5 <br />mg /L <br />0.10 <br />100 <br />70 <br />130 <br />1.0 <br />20 <br />Antimony <br />0.55 <br />mg /L <br />0.0010 <br />109 <br />70 <br />130 <br />2.4 <br />20 <br />Arsenic <br />0.49 <br />mg /L <br />0.0010 <br />97 <br />70 <br />130 <br />0.3 <br />20 <br />Chromium <br />0.48 <br />mg /L <br />0.050 <br />95 <br />70 <br />130 <br />0.9 <br />20 <br />Copper <br />0.76 <br />mg /L <br />0.010 <br />99 <br />70 <br />130 <br />2.1 <br />20 <br />Lead <br />0.52 <br />mg /L <br />0.0010 <br />104 <br />70 <br />130 <br />0.9 <br />20 <br />Manganese <br />2.3 <br />mg /L <br />0.010 <br />93 <br />70 <br />130 <br />0.2 <br />20 <br />Molybdenum <br />0.57 <br />mg /L <br />0.10 <br />113 <br />70 <br />130 <br />1.4 <br />20 <br />Thallium <br />0.51 <br />mg /L <br />0.00040 <br />102 <br />70 <br />130 <br />0.9 <br />20 <br />Uranium <br />0.56 <br />mg /L <br />0.00030 <br />112 <br />70 <br />130 <br />12 <br />20 <br />Method: <br />Sample ID: <br />Silver <br />E200.8 <br />ICV <br />Initial Calibration Verification Standard <br />0.0201 mg /L 0.0010 <br />101 <br />Analytical Run: ICPMS2- C_130523A <br />05/23/13 14:32 <br />90 110 <br />Method: <br />E200.8 <br />Batch: 37487 <br />Sample ID: <br />MB -37487 <br />Method Blank <br />Run: ICPMS2- C_130523A <br />05/24/13 00:20 <br />Silver <br />0.0001 mg /L <br />4E -05 <br />Sample ID: <br />LCS3 -37487 <br />Laboratory Control Sample <br />Run: ICPMS2- C_130523A <br />05/24/13 00:24 <br />Silver <br />0.0514 mg /L <br />0.0010 <br />103 <br />85 115 <br />Sample ID: <br />C13050337 -001 DMS3 <br />Sample Matrix Spike <br />Run: ICPMS2- C_130523A <br />05/24/13 00:36 <br />Silver <br />0.0492 mg /L <br />0.0010 <br />98 <br />70 130 <br />Sample ID: <br />C13050337- 001DMSD3 <br />Sample Matrix Spike Duplicate <br />Run: ICPMS2- C_130523A <br />05/24/13 00.39 <br />Silver <br />0.0496 mg /L <br />0.0010 <br />99 <br />70 130 08 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 15 of 26 <br />