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www.energylab.com Helena, MT 877-472-0711 ? Billings, MT 800-735-4489 • Casper WY 888-235-0515 <br />_ . • '.'- ,` Ans"ralfxcarlanee Slace 1852 Gillette, WY 866-686-7175 Rapid City, SD 886-672-1225 - College Station, T% 888-690-2218 <br />.......... _........ <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program <br />Report Date: 09/14/10 <br />Work Order: C10080305 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Batch: 27043 <br />Sample ID: MB-27043 3 Method Blank Run: ICPMS4-C_100817A 08/18/10 19:10 <br />Antimony ND mg/L 0.0003 <br />Thallium ND mg/L 0.0001 <br />Uranium ND mg/L 4E-05 <br />Sample ID: LCS3-27043 3 Laboratory Control Sample Run: ICPMS4-C_100817A 08/18/10 19:17 <br />Antimony 0.591 mg/L 0.050 118 85 115 S <br />Thallium 0.516 mg/L 0.10 103 85 115 <br />Uranium 0.538 mg/L 0.00030 108 85 115 <br />- Response for Antimony is above standard QA limit. This could indicate a high bias for the sam ple resul ts. 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: C10080422-005AMS3 3 Sample Matrix Spike Run: ICPMS4-C_100817A 08/18/10 20:46 <br />Antimony 0.606 mg/L 0.050 121 70 130 <br />Thallium 0.524 mg/L 0.10 105 70 130 <br />Uranium 0.550 mg/L 0.00030 110 70 130 <br />Sample ID: C10080422-005AMSD 3 Sample Matrix Spike Duplicate Run: ICPMS4-C_100817A 08/18/10 20:52 <br />Antimony 0.608 mg/L 0.050 122 70 130 0.4 20 <br />Thallium 0.532 mg/L 0.10 106 70 130 1.5 20 <br />Uranium 0.552 mg/L 0.00030 110 70 130 0.3 20 <br />Method: E200.8 Batch: R136197 <br />Sample ID: LRB 8 Method Blank Run: ICPMS4-C_100817A 08/17/10 19:44 <br />Arsenic ND mg/L 4E-05 <br />Cadmium ND mg/L 7E-05 <br />Copper ND mg/L 6E-05 <br />Nickel ND mg/L 5E-05 <br />Selenium ND mg/L 5E-05 <br />Silver 0.0001 mg/L 8E-05 <br />Uranium ND mg/L 8E-06 <br />Zinc ND mg/L 0.0001 <br />Sample ID: LFB 8 Laboratory Fortified Blank Run: ICPMS4-C_100817A 08/17/10 19:51 <br />Arsenic 0.0542 mg/L 0.0010 108 85 115 <br />Cadmium 0.0544 mg/L 0.0010 109 85 115 <br />Copper 0.0550 mg/L 0.0010 110 85 115 <br />Nickel 0.0547 mg/L 0.0010 109 85 115 <br />Selenium 0.0548 mg/L 0.0010 110 85 115 <br />Silver 0.0206 mg/L 0.0010 103 85 115 <br />Uranium 0.0535 mg/L 0.00030 107 85 115 <br />Zinc 0.0519 mg/L 0.0010 104 85 115 <br />Sample ID: C10080305-001CMS4 8 Sample Matrix Spike Run: ICPMS4-C_100817A 08/18/10 21:19 <br />Arsenic 0.0544 mg/L 0.0010 109 70 130 <br />Cadmium 0.0512 mg/L 0.010 102 70 130 <br />Copper 0.0528 mg/L 0.010 104 70 130 <br />Nickel 0.0568 mg/L 0.050 105 70 130 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - N ot detected at the reporting limit. <br />MDC - Minimum detectable concentration S - Spi ke recovery outside of advisory limits. <br />Page 11 of 21