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www.eredab.com ( Helena, Mi 877- 472 -0711 - Billings, MT 600 - 735 -4469 - Casper, WY 888- 235 -0515 <br />AuWa Eumbfia Am 1 N J Gillette, NM 866 -686 -7175 • Rapid City, SO 886 -672 -1225 - College Station, TX 888 -690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz SW 5/21/13 S26991 - S26995 <br />Report Date: 06/27/13 <br />Work Order: C13050860 <br />Analyte <br />Count Result <br />Units <br />RL <br />%REC Low Limit <br />High Limit RPD RPDLimit Qual <br />Method: E200.8 <br />mg /L <br />Aluminum <br />0.02 <br />mg /L <br />0.0007 <br />Analytical Run: ICPMS2- C_130530A <br />Sample ID: ICV <br />10 Initial Calibration Verification Standard <br />6E -05 <br />Arsenic <br />05/30/13 18:17 <br />Aluminum <br />00496 <br />mg /L <br />0.0010 <br />99 <br />90 <br />110 <br />Antimony <br />0.0549 <br />mg /L <br />0.0010 <br />110 <br />90 <br />110 <br />Arsenic <br />0.0500 <br />mg /L <br />0.0010 <br />100 <br />90 <br />110 <br />Chromium <br />0.0500 <br />mg /L <br />0.0010 <br />100 <br />90 <br />110 <br />Copper <br />0.0508 <br />mg /L <br />0.0010 <br />102 <br />90 <br />110 <br />Lead <br />0.0497 <br />mg /L <br />0.0010 <br />99 <br />90 <br />110 <br />Manganese <br />0.0490 <br />mg /L <br />0.0010 <br />98 <br />90 <br />110 <br />Molybdenum <br />0.0510 <br />mg /L <br />0.0010 <br />102 <br />90 <br />110 <br />Silver <br />0.0203 <br />mg /L <br />0.0010 <br />102 <br />90 <br />110 <br />Thallium <br />0.0506 <br />mg /L <br />0.0010 <br />101 <br />90 <br />110 <br />Method: E200.8 <br />10 Laboratory Control Sample <br />Sample ID: MB -37651 <br />10 Method Blank <br />2.39 <br />mg /L <br />Aluminum <br />0.02 <br />mg /L <br />0.0007 <br />Antimony <br />0.0005 <br />mg /L <br />6E -05 <br />Arsenic <br />0.0008 <br />mg /L <br />0.0002 <br />Chromium <br />0.002 <br />mg /L <br />0.0001 <br />Copper <br />0.0007 <br />mg /L <br />0.0001 <br />Lead <br />ND <br />mg /L <br />2E -05 <br />Manganese <br />ND <br />mg /L <br />7E -05 <br />Molybdenum <br />ND <br />mg /L <br />6E -05 <br />Silver <br />0.0001 <br />mg /L <br />4E -05 <br />Thallium <br />ND <br />mg /L <br />4E -05 <br />Batch: 37651 <br />Run: ICPMS2- C_130530A 05/30/13 18:33 <br />Sample ID: LCS3 -37651 <br />10 Laboratory Control Sample <br />Run: ICPMS2- C_130530A <br />Aluminum <br />2.39 <br />mg /L <br />0.030 <br />95 <br />85 <br />115 <br />Antimony <br />0.568 <br />mg /L <br />0.0010 <br />114 <br />85 <br />115 <br />Arsenic <br />0.506 <br />mg /L <br />0.0010 <br />101 <br />85 <br />115 <br />Chromium <br />0.492 <br />mg /L <br />0.0050 <br />98 <br />85 <br />115 <br />Copper <br />0.529 <br />mg /L <br />0.0050 <br />106 <br />85 <br />115 <br />Lead <br />0.514 <br />mg /L <br />0.0010 <br />103 <br />85 <br />115 <br />Manganese <br />2.46 <br />mg /L <br />0.0010 <br />98 <br />85 <br />115 <br />Molybdenum <br />0.553 <br />mg /L <br />0.0010 <br />111 <br />85 <br />115 <br />Silver <br />0.0525 <br />mg /L <br />0.0010 <br />105 <br />85 <br />115 <br />Thallium <br />0.482 <br />mg /L <br />0.00050 <br />96 <br />85 <br />115 <br />Sample ID: C1 3050878-001 BMS3 <br />10 Sample Matrix Spike <br />Run: ICPMS2- C_130530A <br />Aluminum <br />2.37 <br />mg /L <br />0.030 <br />94 <br />70 <br />130 <br />Antimony <br />0.566 <br />mg /L <br />0.0010 <br />113 <br />70 <br />130 <br />Arsenic <br />0.496 <br />mg /L <br />0.0010 <br />98 <br />70 <br />130 <br />Chromium <br />0.470 <br />mg /L <br />0.0050 <br />93 <br />70 <br />130 <br />Copper <br />0.523 <br />mg /L <br />0.0050 <br />99 <br />70 <br />130 <br />Lead <br />0.508 <br />mg /L <br />0.0010 <br />102 <br />70 <br />130 <br />Manganese <br />2.34 <br />mg /L <br />0.0010 <br />93 <br />70 <br />130 <br />Molybdenum <br />0.556 <br />mg /L <br />0.0010 <br />111 <br />70 <br />130 <br />Silver <br />0.0518 <br />mg /L <br />0.0010 <br />104 <br />70 <br />130 <br />Thallium <br />0.475 <br />mg /L <br />0.00050 <br />95 <br />70 <br />130 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />05/30/13 18:37 <br />05/30/13 18:46 <br />Page 16 of 31 <br />