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ENERGY <br />Client: Cotter Corporation <br />Project: Schwartz SW 5/01/12 S26376 & S26383 <br />www.energylab.com Helena, MT 877 - 472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888- 235 -0515 <br />Asslyikal Ereslaws act 1831 Gillette, WY 866 -688 -1175 • Rapid City, SD 888 -812 -1225 • College Station, 1X 888- 690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 06/11/12 <br />Work Order: C12050084 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 <br />Sample ID: LRB <br />Calcium <br />Copper <br />Iron <br />Magnesium <br />Manganese <br />Potassium <br />Sodium <br />Thallium <br />Uranium <br />Zinc <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />12 Method Blank <br />ND mg /L 0.007 <br />ND mg /L 3E -05 <br />ND mg /L 0.0006 <br />ND mg /L 0.003 <br />ND mg /L 3E -05 <br />ND mg /L 0.004 <br />ND mg /L 0.004 <br />ND mg /L 6E -05 <br />6E -05 mg /L 9E -06 <br />ND mg /L 0.0002 <br />Run: ICPMS4- C_120503A <br />Sample ID: LFB 12 Laboratory Fortified Blank Run: ICPMS4- C_120503A <br />Aluminum 0.0497 mg /L 0.0010 99 85 115 <br />Antimony 0.0494 mg /L 0.0010 99 85 115 <br />Calcium 11.2 mg /L 0.0066 89 85 115 <br />Copper 0.0480 mg /L 0.0010 96 85 115 <br />Iron 1.18 mg /L 0.0010 94 85 115 <br />Magnesium 11.4 mg /L 0.0027 91 85 115 <br />Manganese 0.0496 mg /L 0.0010 99 85 115 <br />Potassium 11.3 mg /L 0.0041 90 85 115 <br />Sodium 11.3 mg /L 0.0043 90 85 115 <br />Thallium 0.0472 mg /L 0.0010 94 85 115 <br />Uranium 0.0477 mg /L 0.00030 95 85 115 <br />Zinc 0.0486 mg /L 0.0010 97 85 115 <br />ND - Not detected at the reporting limit. <br />Page 15 of 29 <br />Batch: R159247A <br />05/03/12 12:11 <br />05/03/12 12:16 <br />