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www.e wdob.eom Helena, MT 877472-0711 - Billings, MT 800-7354489 - Casper, WY 888-235-0515 <br />» - AWAW Dcm 1Y1C Sam 1032 Gillette, WY 866-686-7175 - Rapid City, SO 886-672-1225 - College Station, T% 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 08/15/10 <br />Project: Schwartzwalder Water Monitoring Program Work Order: C10070865 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.7 Batch: 26812 <br />Sample ID: MB-26812 5 Method Blank Run: ICP2-C_100727A 07/27/10 18:30 <br />Aluminum ND mg/L 0.01 <br />Copper ND mg/L 0.001 <br />Iron ND mg/L 0.008 <br />Manganese ND mg/L 0.0008 <br />Zinc ND mg/L 0.008 <br />Sample ID: LCS3-26812 5 Laboratory Con trol Sample Run: ICP2-C_100727A 07/27/10 18:34 <br />Aluminum 2.54 mg/L 0.10 102 85 115 <br />Copper 0.526 mg/L 0.010 105 85 115 <br />Iron 2.62 mg/L 0.030 105 85 115 <br />Manganese 2.59 mg/L 0.010 103 85 115 <br />Zinc 0.532 mg/L 0.010 106 85 115 <br />Sample ID: C10070862-0011AMS3 5 Sample Matrix Spike Run: ICP2-C_100727A 07/27/10 19:14 <br />Aluminum 3.66 mg/L 0.10 114 70 130 <br />Copper 0.545 mg/L 0.010 108 70 130 <br />Iron 4.34 mg/L 0.030 107 70 130 <br />Manganese 2.68 mg/L 0.010 103 70 130 <br />Zinc 0.542 mg/L 0.016 105 70 130 <br />Sample ID: C10070862-001AMSD 5 Sample Matrix Spike Duplicate Run: ICP2-C_100727A 07/27/10 19:18 <br />Aluminum 3.45 mg/L 0.10 105 70 130 5.9 20 <br />Copper 0.528 mg/L 0.010 104 70 130 3.2 20 <br />Iron 4.24 mg/L 0.030 103 70 130 2.3 20 <br />Manganese 2.64 mg/L 0.010 101 70 130 1.4 20 <br />Zinc 0.531 mg/L 0.016 103 70 130 2.1 20 <br />Method: E200.7 Batch: R135348 <br />Sample ID: MB-100727A 11 Method Blank Run: ICP2-C_100727A 07/27/10 12:14 <br />Aluminum ND mg/L 0.01 <br />Calcium ND mg/L 0.2 <br />Copper ND mg/L 0.001 <br />Iron 0.002 mg/L 0.002 <br />Magnesium ND mg/L 0.05 <br />Manganese ND mg/L 0.0004 <br />Molybdenum ND mg/L 0.005 <br />Potassium ND mg/L 0.02 <br />Sodium ND mg/L 0.3 <br />Uranium ND mg/L 0.2 <br />Zinc ND mg/L 0.001 <br />Sample ID: LFB-100727A 11 Laboratory Fortified Blank Run: ICP2-C_100727A 07/27/10 12:18 <br />Aluminum 0.907 mg/L 0.10 91 85 115 <br />Calcium 50.3 mg/L 0.50 101 85 115 <br />Copper 0.968 mg/L 0.010 97 85 115 <br />Iron 0.991 mg/L 0.030 99 85 115 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 10 of 25