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wMeneraylab.eom Helena, MT 877472-0711 • Billings, MT 800-7354489 • Casper, WY 888-235-0515 <br />• AU"W EWA i=S*1 ism Gillette, WY 866-686-7175 • Rapid City, SD 888-672-1225 • College Station, TX 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: R135348 <br />Sample ID: LFB-100727A 11 Laboratory Fortified Blank Run: ICP2-C_100727A 07/27/10 12:18 <br />Magnesium 50.2 mg/L 0.50 100 85 115 <br />Manganese 0.952 mg/L 0.010 95 85 115 <br />Molybdenum 0.973 mg/L 0.10 97 85 115 <br />Potassium 49.8 mg/L 0.82 100 85 115 <br />Sodium 48.2 mg/L 0.50 96 85 115 <br />Uranium 4.80 mg/L 1.0 96 85 115 <br />Zinc 0.983 mg/L 0.010 98 85 115 <br />Sample ID: C10060510-004131VIS2 11 Sample Matrix Spike Run: ICP2-C_100727A 07/27/10 13:15 <br />Aluminum 2.07 mg/L 0.10 101 70 130 <br />Calcium 123 mg/L 1.0 99 70 130 <br />Copper 1.97 mg/L 0.010 96 70 130 <br />Iron 2.01 mg/L 0.030 97 70 130 <br />Magnesium 105 mg/L 1.0 97 70 130 <br />Manganese 1.95 mg/L 0.010 95 70 130 <br />Molybdenum 1.97 mg/L 0.10 96 70 130 <br />Potassium 96.4 mg/L 1.0 93 70 130 <br />Sodium 110 mg/L 1.0 98 70 130 <br />Uranium 9.78 mg/L 0.35 96 70 130 <br />Zinc 2.02 mg/L 0.010 98 70 130 <br />Sample ID: C10060510-004BMSD 11 Sample Matrix Spike Duplicate Run: ICP2-C_1 00727A 07/27/10 13:19 <br />Aluminum 2.05 mg/L 0.10 100 70 130 1.1 20 <br />Calcium 123 mg/L 1.0 99 70 130 0.3 20 <br />Copper 2.00 mg/L 0.010 98 70 130 1.8 20 <br />Iron 2.05 mg/L 0.030 98 70 130 1.8 20 <br />Magnesium 107 mg/L 1.0 99 70 130 1.9 20 <br />Manganese 1.96 mg/L 0.010 96 70 130 0.8 20 <br />Molybdenum 2.01 mg/L 0.10 98 70 130 2 20 <br />Potassium 97.8 mg/L 1.0 94 70 130 1.5 20 <br />Sodium 110 mg/L 1.0 98 70 130 0.2 20 <br />Uranium 9.90 mg/L 0.35 97 70 130 1.2 20 <br />Zinc 2.06 mg/L 0.010 100 70 130 2.1 20 <br />Qualifiers: <br />RL - Analyte reporting limit. ND Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 11 of 25