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www.energyiab.com I Helena, Ali 677-472-0711 • Billings, MT 800-735-4489 • Casper, WY 888-235-1515 Au&dW rr J Gillette, WY 866-086-7175 - Rapid City, So 888-672-1225 - College Station, <br /> TX 888-680-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program SW <br />Report Date: 11 /22/10 <br />Work Order: C10100592 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Batch: R139312 <br />Sample ID: C10101070-008CMSD 12 Sample Matrix Spike Duplicate Run: ICPMS2-C_101101A 11/02/10 02:24 <br />Chromium 0.0461 mg/L 0.0010 92 70 130 1.0 20 <br />Copper 0.0548 mg/L 0.010 99 70 130 1.7 20 <br />Lead 0.0531 mg/L 0.050 105 70 130 1.6 20 <br />Manganese 0.0486 mg/L 0.010 92 70 130 1.0 20 <br />Molybdenum 0.162 mg/L 0.10 106 70 130 2.1 20 <br />Silver 0.0148 mg/L 0.010 74 70 130 1.2 20 <br />Thallium 0.0510 mg/L 0.0010 102 70 130 1.7 20 <br />Uranium 0.349 mg/L 0.00030 70 130 2.4 20 A <br />Zinc 0.0568 mg/L 0.010 106 70 130 1.1 20 <br />Method: E200.8 <br />Sample ID: MB-28033 3 Method Blank <br />Arsenic ND mg/L <br />Chromium 0.00284 mg/L <br />Uranium ND mg/L <br />Sample ID: LCS3-28033 3 Laboratory Control Sample <br />Arsenic 0.512 mg/L <br />Chromium 0.521 mg/L <br />Uranium 0.566 mg/L <br />Sample ID: C10101128-002DMS3 3 Sample Matrix Spike <br />Arsenic 0.512 mg/L <br />Chromium 0.485 mg/L <br />Uranium 0.597 mg/L <br />Sample ID: C10101128-002DMSD 3 Sample Matrix Spike Duplicate <br />Arsenic 0.517 mg/L <br />Chromium 0.503 mg/L <br />Uranium 0.582 mg/L <br />Batch: 28033 <br />Run: ICPMS2-C_101105A 11/05/10 23:14 <br />0.00050 <br />0.0010 <br />0.00020 <br />Run: ICPMS2-C_101105A 11/05/10 23:21 <br />0.0010 102 85 115 <br />0.050 104 85 115 <br />0.00030 113 85 115 <br /> Run: ICPMS2-C_101105A 11/06/10 00:29 <br />0.0010 102 70 130 <br />0.050 97 70 130 <br />0.00030 118 70 130 <br /> Run: ICPMS2-C_101105A 11/06/10 00:35 <br />0.0010 103 70 130 0.9 20 <br />0.050 100 70 130 3.6 20 <br />0.00030 115 70 130 2.5 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - Not detected at the reporting limit. <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 19 of 36