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www.energylab.mm ( Helena, W 677472-0711 • Billings, MT 800-7354489 • Casper, WY 888-235-8515 <br />Iuryrral FirsN =2=192 J Gillette, WY 866-666-7175 • Rapid City, SD 886-672-1225 • College Station, Tl( 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program <br />Report Date: 11 /29/10 <br />Work Order: C10100734 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDL[mit Qua[ <br />Method: E200.8 Batch: R139135 <br />Sample ID: LRB Method Blank Run: ICPMS2-C_101027A 10/27/10 10:20 <br />Uranium ND mg/L 1 E-05 <br />Sample ID: LFB Laboratory Fortified Blank Run: ICPMS2-C_101027A 10/27/10 10:24 <br />Uranium 0.0557 mg/L 0.00030 111 85 115 <br />Sample ID: C10100797-007BMS Sample Matrix Spike Run: ICPMS2-C_101027A 10/27/10 23:59 <br />Uranium 0.0712 mg/L 0.00030 104 70 130 <br />Sample ID: 010100797-007BMSD Sample Matrix Spike Duplicate Run: ICPMS2-C_101027A 10/28/10 00:16 <br />Uranium 0.0724 mg/L 0.00030 106 70 130 1.6 20 <br />Method: E200.8 Batch: 28120 <br />Sample ID: MB-28120 6 Method Blank Run: ICPMS2-C_101111A 11/11/10 21:28 <br />Antimony 0.0005 mg/L 0.0002 <br />Arsenic 0.001 mg/L 0.0003 <br />Lead 5E-05 mg/L 5E-05 <br />Thallium ND mg/L 5E-05 <br />Uranium ND mg/L 4E-05 <br />Zinc 0.001 mg/L 0.001 <br />Sample ID: LCS3-28120 6 Laboratory Control Sample Run: ICPMS2-C_101111A 11/11/10 21:35 <br />Antimony 0.600 mg/L 0.050 120 85 115 S <br />Arsenic 0.521 mg/L 0.0010 104 85 115 <br />Lead 0.560 mg/L 0.050 112 85 115 <br />Thallium 0.540 mg/L 0.10 108 85 115 <br />Uranium 0.565 mg/L 0.00030 113 85 115 <br />Zinc 0.505 mg/L 0.010 101 85 115 <br />- Response is above standard QA limit for Antimony. This could indicate a high bias for the sam ple resul ts. Since there were no detectable analyte responses, and the <br />remainder of the run QA is within acceptance range, this batch is approved. <br />Sample ID: C10100784-OOICMS3 6 Sample Matrix Spike Run: ICPMS2-C_101111A 11/11/10 22:15 <br />Antimony 0.595 mg/L 0.050 119 70 130 <br />Arsenic 0.514 mg/L 0.0010 102 70 130 <br />Lead 0.526 mg/L 0.050 105 70 130 <br />Thallium 0.505 mg/L 0.10 101 70 130 <br />Uranium 0.499 mg/L 0.00030 99 70 130 <br />Zinc 0.482 mg/L 0.010 96 70 130 <br />Sample ID: C1 0100784-001 CMSD 6 Sample Matrix Spike Duplicate Run: ICPMS2-C_101111A 11/11/10 22:22 <br />Antimony 0.612 mg/L 0.050 122 70 130 2.7 20 <br />Arsenic 0.565 mg/L 0.0010 112 70 130 9.3 20 <br />Lead 0.545 mg/L 0.050 109 70 130 3.5 20 <br />Thallium 0.524 mg/L 0.10 105 70 130 3.8 20 <br />Uranium 0.576 mg/L 0.00030 115 70 130 14 20 <br />Zinc 0.507 mg/L 0.010 101 70 130 5.1 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Page 15 of 29