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ENERGY <br />Client: Cotter Corporation <br />Analyte <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />www.energylab.com 1 Helena, MT 877- 472 -0711 • Billings, MT 800 - 735 -4489 • Casper, WY 888-235-0515 <br />Slac Gillette, W <br />f 1957 WY 888 -886 -7175 • Rapid City, SO 888 - 872 -1225 • College Station, TX 888 -600 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 12/18/12 <br />Project: Schwartz GW 10/25/2012 S26616 Work Order: C12101105 <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.7 <br />Sample ID: MB- 121116A 5 Method Blank <br />Iron ND mg /L 0.001 <br />Magnesium ND mg /L 0.03 <br />Potassium ND mg /L 0.06 <br />Sodium ND mg /L 0.3 <br />Run: ICP2-C_121116A <br />Sample ID: LFB- 121116A 5 Laboratory Fortified Blank Run: ICP2- C_121116A <br />Calcium 47.9 mg /L 0.50 96 85 115 <br />Iron 0.974 mg /L 0.030 97 85 115 <br />Magnesium 47.3 mg /L 0.50 95 85 115 <br />Potassium 45.3 mg /L 0.50 91 85 115 <br />Sodium 48.8 mg /L 0.50 98 85 115 <br />ND - Not detected at the reporting limit. <br />Batch: R167330 <br />11/16/12 13:25 <br />11/16/12 13:29 <br />Sample ID: C12101137- 001BMS2 5 Sample Matrix Spike Run: ICP2- C_121116A 11/16/12 19:11 <br />Calcium 112 mg /L 1.0 95 70 130 <br />Iron 1.13 mg /L 0.030 94 70 130 <br />Magnesium 58.5 mg /L 1.0 97 70 130 <br />Potassium 51.5 mg /L 1.0 90 70 130 <br />Sodium 147 mg /L 1.0 100 70 130 <br />Sample ID: C12101137- 001BMSD 5 Sample Matrix Spike Duplicate Run: ICP2- C_121116A 11/16/12 19:15 <br />Calcium 111 mg /L 1.0 92 70 130 1.3 20 <br />Iron 1.12 mg /L 0.030 94 70 130 0.2 20 <br />Magnesium 60.7 mg /L 1.0 101 70 130 3.6 20 <br />Potassium 53.0 mg /L 1.0 93 70 130 2.9 20 <br />Sodium 146 mg /L 1.0 98 70 130 0.7 20 <br />Page 8 of 20 <br />