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www.energylab.can Helena, MY 877472-0711 • Billings, MT 800-7354489 • Casper, WY 888-235-8515 <br />• na a "Emillom RM rfcrs Gillette, WY 866-686-7175 • Rapid City, SO 888-672-1225 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 11/22/10 <br />Project: Schwartzwalder Water Monitoring Program SW Work Order: C10100592 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Batch: 28033 <br />Sample ID: MB-28033 8 Method Blank Run: ICPMS4-C_101102B 11/02/10 21:10 <br />Antimony ND mg/L 0.0003 <br />Copper 0.001 mg/L 5E-05 <br />Iron 0.002 mg/L 0.001 <br />Lead 9E-05 mg/L 5E-05 <br />Molybdenum 0.0005 mg/L 0.00010 <br />Silver 0.0001 mg/L 4E-05 <br />Thallium 0.001 mg/L 0.0001 <br />Zinc 0.002 mg/L 0.001 <br />Sample ID: LCS3-28033 8 Laboratory Control Sample Run: ICPMS4-C_101102B 11/02/10 21:17 <br />Antimony 0.616 mg/L 0.050 123 85 115 S <br />Copper 0.471 mg/L 0.010 94 85 115 <br />Iron 2.14 mg/L 0.030 86 85 115 <br />Lead 0.517 mg/L 0.050 103 85 115 <br />Molybdenum 0.462 mg/L 0.10 92 85 115 <br />Silver 0.0492 mg/L 0.010 98 85 115 <br />Thallium 0.501 mg/L 0.10 100 85 115 <br />Zinc 0.515 mg/L 0.010 103 85 115 <br />- Response is above standard QA limit for Antimony. This could indicate a high bias for the sam ple results. Since there were no detectable analyte responses, and the <br />remainder of the run QA is within acceptance range, this batch is approved. <br />Sample ID: C10101128-002DMS3 8 Sample Matrix Spike Run: ICPMS4-C_101102B 11/02/10 23:55 <br />Antimony 0.615 mg/L 0.050 123 70 130 <br />Copper 0.457 mg/L 0.010 91 70 130 <br />Iron 2.23 mg/L 0.030 87 70 130 <br />Lead 0.528 mg/L 0.050 106 70 130 <br />Molybdenum 0.481 mg/L 0.10 96 70 130 <br />Silver 0.0471 mg/L 0.010 94 70 130 <br />Thallium 0.505 mg/L 0.10 101 70 130 <br />Zinc 0.464 mg/L 0.010 92 70 130 <br />Sample ID: C10101128-002DMSD 8 Sample Matrix Spike Duplicate Run: ICPMS4-C_101102B 11/03/10 00:02 <br />Antimony 0.537 mg/L 0.050 107 70 130 14 20 <br />Copper 0.468 mg/L 0.010 93 70 130 2.4 20 <br />Iron 2.21 mg/L 0.030 86 70 130 0.8 20 <br />Lead 0.513 mg/L 0.050 103 70 130 2.8 20 <br />Molybdenum 0.418 mg/L 0.10 83 70 130 14 20 <br />Silver 0.0464 mg/L 0.010 93 70 130 1.4 20 <br />Thallium 0.493 mg/L 0.10 99 70 130 2.4 20 <br />Zinc 0.465 mg/L 0.010 93 70 130 0.1 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Page 22 of 36