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www.energyleb.com Helena, MT 871 -472 -0711 • Billings, MT 800 - 135 -4489 • Casper, WY 888 -235 -0515 <br />Msiydcal am 11152 Gillette, WY 888 -688 -7115 • Rapid City, SD 888- 672 -1225 • College Station, TX 888- 690 -2218 <br />ENERGY <br />Client: Cotter Corporation <br />Analyte <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 06/06/12 <br />Project: Schwartz GW 4/24/12 S26350 Work Order: C12041245 <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 <br />Sample ID: LRB 12 Method Blank Run: ICPMS4- C_120427A <br />Calcium ND mg /L 0.007 <br />Copper ND mg /L 3E -05 <br />Iron ND mg /L 0.0006 <br />Magnesium ND mg /L 0.003 <br />Manganese ND mg /L 3E -05 <br />Molybdenum ND mg /L 3E -05 <br />Potassium 0.01 mg /L 0.004 <br />Thallium ND mg /L 6E -05 <br />Uranium ND mg /L 9E -06 <br />Zinc ND mg /L 0.0002 <br />Sample ID: LFB 12 Laboratory Fortified Blank Run: ICPMS4- C_120427A <br />Aluminum 0.0488 mg /L 0.0010 98 85 115 <br />Antimony 0.0498 mg /L 0.0010 100 85 115 <br />Calcium 11.8 mg /L 0.0066 94 85 115 <br />Copper 0.0488 mg /L 0.0010 98 85 115 <br />Iron 1.18 mg /L 0.0010 94 85 115 <br />Magnesium 11.7 mg /L 0.0027 94 85 115 <br />Manganese 0.0478 mg /L 0.0010 96 85 115 <br />Molybdenum 0.0494 mg /L 0.0010 99 85 115 <br />Potassium 11.4 mg /L 0.0041 91 85 115 <br />Thallium 0.0491 mg /L 0.0010 98 85 115 <br />Uranium 0.0468 mg /L 0.00030 94 85 115 <br />Zinc 0.0494 mg /L 0.0010 99 85 115 <br />ND - Not detected at the reporting limit. <br />Batch: R159012A <br />04/27/12 11:46 <br />Page 8 of 19 <br />04/27/12 12:14 <br />