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ENERGY <br />Client: Cotter Corporation <br />Analyte <br />Sample ID: LFB <br />Aluminum <br />Antimony <br />Arsenic <br />Calcium <br />Copper <br />Iron <br />Lead <br />Magnesium <br />Manganese <br />Molybdenum <br />Potassium <br />Silver <br />Sodium <br />Thallium <br />Uranium <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />www.energylab.com Helena, MT 877 -472 -0711 • Billings, MT 800-735 • Casper, WY 888 235 - 0515 <br />$pree 1952 , :„ `t ,,- Gillette, WY 888. 888.7175 • Rapid City, SD 888 672 - 1225 • College Station, TX 888 - 681 - 2218 <br />Sample ID: LRB 15 Method Blank <br />Aluminum ND mg /L 0.0002 <br />Antimony ND mg /L 0.0001 <br />Arsenic ND mg /L 5E -05 <br />Calcium ND mg /L 0.007 <br />Copper ND mg /L 3E -05 <br />Iron ND mg /L 0.0006 <br />Lead ND mg /L 2E -05 <br />Magnesium ND mg /L 0.003 <br />Manganese ND mg /L 3E -05 <br />Molybdenum ND mg /L 3E -05 <br />Potassium 0.009 mg /L 0.004 <br />Silver 0.0002 mg /L 6E -05 <br />Sodium ND mg /L 0.004 <br />Thallium ND mg /L 6E -05 <br />Uranium ND mg /L 9E -06 <br />15 Laboratory Fortified Blank <br />0.0598 mg /L <br />0.0546 mg /L <br />0.0568 mg /L <br />13.4 mg /L <br />0.0575 mg /L <br />1.43 mg /L <br />0.0547 mg /L <br />13.8 mg /L <br />0.0556 mg /L <br />0.0540 mg /L <br />13.6 mg /L <br />0.0212 mg /L <br />13.6 mg /L <br />0.0534 mg /L <br />0.0520 mg /L <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 06/06/12 <br />Project: Schwartz GW 4/27/12 S26359 Work Order: C12041332 <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Batch: R159156A <br />Sample ID: 012041332 -001 DMSD 15 Sample Matrix Spike Duplicate Run: ICPMS4-C_120501B 05/01/12 23:24 <br />Molybdenum 0.159 mg /L 0.0010 92 70 130 2.7 20 <br />Potassium 20.8 mg /L 1.0 84 70 130 11 20 <br />Silver 0.0180 mg /L 0.0010 90 70 130 1.5 20 <br />Sodium 101 mg /L 1.0 70 130 9.9 20 A <br />Thallium 0.0496 mg /L 0.00050 99 70 130 2.1 20 <br />Uranium 13.1 mg /L 0.00030 70 130 3.1 20 A <br />Run: ICPMS4-C_120501B 05/01/12 17:55 <br />Run: ICPMS4-C_120501B 05/01/12 18:00 <br />0.0010 120 85 115 S <br />0.0010 109 85 115 <br />0.0010 114 85 115 <br />0.0066 107 85 115 <br />0.0010 115 85 115 <br />0.0010 114 85 115 <br />0.0010 109 85 115 <br />0.0027 110 85 115 <br />0.0010 111 85 115 <br />0.0010 108 85 115 <br />0.0041 109 85 115 <br />0.0010 105 85 115 <br />0.0043 109 85 115 <br />0.0010 107 85 115 <br />0.00030 104 85 115 <br />- Aluminum response is above standard QA limit. This could indicate a high bias for the sample results. Since there were no detectable analyte responses, and the <br />remainder of the run QA is within acceptance range, this batch is approved. <br />A - The analyte level was greater than four times the spike level. In <br />accordance with the method % recovery is not calculated. <br />MDC - Minimum detectable concentration <br />Page 8 of 19 <br />