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.__-. ._ <br />.._.. _. .._ _ ------ - _ . _._ ............. ........... _ _ ..._ ......... <br />• ?? wvrw.energylab.corn mM Helena, MT 877-472-0711 , Billings MI 800-735-4489 a Casper, WY 888-235-0515 <br />?.? Maryttalfxce8ancsSnca 1851 j Gillette, WY 866-686-7175 - Rapid City, s0 888-672-1225 . College Station, TX 888-890-2210 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartzwalder Mine Monitoring Program-Surface Wa <br />Analyte Count Result Units <br />Method: E200.8 <br />Sample ID: C10110870.002BMS4 7 Sample Matrix Spike <br />Chromium 0.289 mg/L <br />Copper 0.247 mg/L <br />Lead 0.266 mg/L <br />Molybdenum 0.319 mg/L <br />Thallium 0.268 mg/L <br />Uranium 0.306 mg/L <br />Zinc 0.317 mg/L <br />Sample ID: C10110870-002BMSD 7 Sample Matrix Spike Duplicate <br />Chromium 0.300 mg/L <br />Copper 0.252 mg/L <br />Lead 0.266 mg/L <br />Molybdenum 0.336 mg/L <br />Thallium 0.269 mg/L <br />Uranium 0.307 mg/L <br />Zinc 0.319 mg/L <br />Sample ID: LRB 7 Method Blank <br />Chromium NO mg/L <br />Copper NO mgI <br />Lead ND mg/L <br />Molybdenum NO mg/L <br />Thallium ND mgiL <br />Uranium 4E-05 mg/L <br />Zinc 0.005 mg/L <br />Sample ID: LFB 7 Laboratory Forti fied Blank <br />Chromium 0.0520 mg/L <br />Copper 0.0529 mg/L <br />Lead 0.0519 mg/L <br />Molybdenum 0.0500 mg/L <br />Thallium 0.0514 mg/L <br />Uranium 0.0520 mg/L <br />Zinc 0.0539 mg/L <br />Report Date: 01/05/11 <br />Work Order: 010110690 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: R141 190A <br />Run: ICPMS4-C_101221A 12/22/1013:06 <br />0.050 114 70 130 <br />0.010 97 70 130 <br />0.050 106 70 130 <br />0.10 109 70 130 <br />0.10 107 70 130 <br />0.00030 107 70 130 <br />0.010 65 70 130 <br /> Run: IC PMS4-G _ 101221 A <br />0.050 118 70 130 3.7 <br />0.010 99 70 130 2.1 <br />0.050 106 70 130 0.0 <br />0.10 116 70 130 5.4 <br />0.10 108 70 130 0.5 <br />0.00030 107 70 130 0.4 <br />0.010 86 70 130 0.7 <br /> Run: ICPMS4-C <br />- 101221A <br />5E-05 <br />6E-05 <br />2E-05 <br />8E-05 <br />2E-05 <br />8E-06 <br />0.0001 <br />12/22/10 13:13 <br />20 <br />20 <br />20 <br />20 <br />20 <br />20 <br />20 <br />12/21/10 17:14 <br /> Run:ICPMS4-C-101221A 12/21/1017:21 <br />0.0010 104 85 115 <br />0.0010 106 85 115 <br />0.0010 104 85 115 <br />0.0010 100 85 115 <br />0.0010 103 85 115 <br />0.00030 104 85 115 <br />0.0010 97 85 115 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected al the reporting limit. <br />Page 21 of 39 <br />