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www.erbrgylab=m ?&806' +877.-472-0711. *Billings, W 800-735-4469 - Casper, WY 888-235-8515 <br />As**WEw01W ar`SMca fa67 7175 • vapid City, SD 888-672-1225 - College Station, TX 888-880-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz GW 02/25/11 S25622 <br />Analyte Count Result Units <br />Method: E200.8 <br />Sample ID: LRB 7 Method Blank <br />Aluminum 0.0010 mg/L <br />Antimony ND mg/L <br />Iron 0.004 mg/L <br />Manganese ND mg/L <br />Molybdenum ND mg/L <br />Thallium 3E-05 mg/L <br />Uranium ND mg/L <br />Sample ID: LFB 7 Laboratory Fortified Blank <br />Aluminum 0.0586 mg/L <br />Antimony 0.0542 mg/L <br />Iron 1.37 mg/L <br />Manganese 0.0548 mg/L <br />Molybdenum 0.0532 mg/L <br />Thallium 0.0540 mg/L <br />Uranium 0.0539 mg/L <br />Sample ID: C11020751-001CMS4 7 Sample Matrix Spike <br />Aluminum 0.0462 mg/L <br />Antimony 0.0607 mg/L <br />Iron 1.15 mg/L <br />Manganese 0.0523 mg/L <br />Molybdenum 0.0996 mg/L <br />Thallium 0.0514 mg/L <br />Uranium 3.38 mg/L <br />Sample ID: C1 1020751 -001 CMSD 7 Sample Matrix Spike Duplicate <br />Aluminum 0.0446 mg/L <br />Antimony 0.0652 mg/L <br />Iron 1.15 mg/L <br />Manganese 0.0515 mg/L <br />Molybdenum 0.105 mg/L <br />Thallium 0.0507 mg/L <br />Uranium 3.31 mg/L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - Not detected at the reporting limit. <br />Report Date: 03/28/11 <br />Work Order: 011020751 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: R143213A <br />Run: ICPMS4-C 110301A 03/01/11 22:04 <br />8E-05 <br />0.0002 <br />0.0001 <br />2E-05 <br />8E-05 <br />2E-05 <br />8E-06 <br /> Run: ICPMS4-C 110301A 03/01/11 22:11 <br />0.0010 115 85 115 <br />0.0010 108 85 115 <br />0.012 109 85 115 <br />0.0010 109 85 115 <br />0.0010 106 85 115 <br />0.0010 108 85 115 <br />0.00030 108 85 115 <br /> Run: ICPMS4-C 110301A 03/03/11 03:02 <br />0.0010 91 70 130 <br />0.050 121 70 130 <br />0.030 90 70 130 <br />0.010 96 70 130 <br />0.0010 109 70 130 <br />0.0010 103 70 130 <br />0.00030 70 130 A <br /> Run: ICPMS4-C_110301A 03/03/1103:09 <br />0.0010 88 70 130 3.6 20 <br />0.050 130 70 130 7.3 20 <br />0.030 90 70 130 0.3 20 <br />0.010 94 70 130 1.5 20 <br />0.0010 119 70 130 5.0 20 <br />0.0010 101 70 130 1.3 20 <br />0.00030 70 130 2.1 20 A <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 9 of 20