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ENERGY <br />Qualifiers: <br />Client: Cotter Corporation <br />www.energylab.com <br />Aar y+Yaf Enema Shwa 1831 <br />Helena, MT 877- 472 -0711 • Billings, MT 801- 735 -4488 • Casper, WY 888- 235 -0515 <br />Gillette, WY 866- 686 -7175 • Rapid City, SD 888- 612 -1225 • College Station, TX 888 -600 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 02/07/12 <br />Project: Schwartz GW 12/30/11 S26173 Work Order: C12010004 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Analytical Run: ICPMS4- C_120123A <br />Sample ID: ICV 5 Initial Calibration Verification Standard 01/23/12 12:13 <br />Calcium 9.86 mg /L 0.0066 99 90 110 <br />Iron 1.03 mg /L 0.0010 103 90 110 <br />Magnesium 9.46 mg /L 0.0027 95 90 110 <br />Potassium 9.87 mg /L 0.0041 99 90 110 <br />Sodium 9.31 mg /L 0.0043 93 90 110 <br />Method: E200.8 <br />Sample ID: LRB 5 Method Blank <br />Calcium ND mg /L 0.007 <br />Iron ND mg /L 0.0006 <br />Magnesium ND mg /L 0.003 <br />Potassium 0.006 mg /L 0.004 <br />Sodium ND mg /L 0.004 <br />Sample ID: LFB 5 Laboratory Fortified Blank Run: ICPMS4- C_120123A <br />Calcium 12.1 mg /L 0.0066 97 85 115 <br />Iron 1.24 mg /L 0.0010 99 85 115 <br />Magnesium 12.4 mg /L 0.0027 99 85 115 <br />Potassium 12.3 mg /L 0.0041 98 85 115 <br />Sodium 12.4 mg /L 0 0043 99 85 115 <br />Batch: R155623A <br />Run: ICPMS4- C_120123A 01/23/12 13:08 <br />01/23/12 13:15 <br />Sample ID: C12010474- 002BMS4 5 Sample Matrix Spike Run: ICPMS4- C_120123A 01/24/12 13:21 <br />Calcium 60.2 mg /L 1.0 93 70 130 <br />Iron 6.36 mg /L 0.030 101 70 130 <br />Magnesium 61.2 mg /L 1.0 98 70 130 <br />Potassium 84.8 mg /L 1.0 93 70 130 <br />Sodium 429 mg /L 1.0 70 130 A <br />Sample ID: C12010474- 002BMSD 5 Sample Matrix Spike Duplicate Run* ICPMS4- C_120123A 01/24/12 13:28 <br />Calcium 62.0 mg /L 1.0 96 70 130 2.9 20 <br />Iron 6 34 mg /L 0.030 101 70 130 0.4 20 <br />Magnesium 61.5 mg /L 10 98 70 130 0.4 20 <br />Potassium 85.8 mg /L 1.0 95 70 130 1.1 20 <br />Sodium 429 mg /L 10 70 130 0.1 20 A <br />RL - Analyte reporting limit. A - The analyte level was greater than four times the spike level. In <br />accordance with the method % recovery is not calculated <br />ND - Not detected at the reporting limit. MDC - Minimum detectable concentration <br />Page 12 of 21 <br />