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<br />,` ;1 • www.energylab.com <br />AnafyUcalfrcaUaucasfaco 1057 _... 1-1-1-- ........_._.. _...- ....._... .., . .. -... <br />MT 871472-0711 Billings, MT 800-135-4469 Caspar, WY 888-235-0515 <br />f Gillette, WY 866-686-7175 w Rapid City, So 888.672-1225 4 College Station, TX 888-698-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, W Y Branch <br />Client: Cotter Corporation Report Date: 12/23/10 <br />Project: Schwartzwalder Water Monitoring Program - SW Work Order: C10110479 <br />Analyte Count Result Units RL %REC Low Limit Nigh Limit RPD RPDLimit Qual <br />Method: E200.7 Batch; R140655 <br />Sample ID: MB-101206A 5 Method Blank Run: ICP2-C.-101206A 12/06/10 11:24 <br />Calcium ND mg/L 0.2 <br />Magnesium ND mg/L 0.05 <br />Potassium ND mg/L 0.02 <br />Sodium ND mg/L 0.3 <br />Uranium ND mg/L 0.2 <br />Sample to: LFE-101206A 5 Laboratory For tified Blank Run: ICP2-C_101206A 12/06/10 11:28 <br />Calcium 49.8 mg/L 0.50 100 85 115 <br />Magnesium 51.2 mglL 0.50 102 85 115 <br />Potassium 43.4 mg/L 0.50 87 85 115 <br />Sodium 48.0 mg/L 0.50 96 85 115 <br />Uranium 4.79 mg/L 1.0 96 85 115 <br />Sample ID: 010110470-001CMS2 5 Sample Malrix Spike Run, ICP2-C_101206A 12/06.!10 12:21 <br />Calcium 313 mg/L 1.0 105 70 130 <br />Magnesium 117 mglL 1.0 98 70 130 <br />Potassium 93.0 mg/L 1.0 87 70 130 <br />Sodium 149 mg1L 1.0 99 70 130 <br />Uranium 9.80 mg/L 0.35 96 70 130 <br />Sample ID: 010110470-001CMSD 5 Sample Matrix Spike Duplicate Run: ICP2-C_,-101206A 12/06/1012:25 <br />Calcium 313 mg/L 1.0 105 70 130 0.0 20 <br />Magnesium 117 mg/L 1.0 97 70 130 0.3 20 <br />Potassium 95.1 mg/L 1.0 89 70 130 2.2 20 <br />Sodium 152 mg/L 1.0 102 70 130 1.8 20 <br />Uranium 9.91 mg/L 0.35 97 70 130 1.2 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit, <br />Page 18 of 40