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www.energylab.com <br />Awocal ficellence Slncs /951 <br />Helena, NT 877-472-0711 . Billings, MT 800-735-4489 a Casper, IVY 888-235-0515 <br />Gillette, WY 866-686-7175 Y Rapid City, SO 888-672-1225 • College Station, TX 888-600-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 12/09/10 <br />Project: Schwartzwalder Water Sampling Program-Ground Water Work Order: C10110027 <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Analyte <br /> Batch: R139855 <br />Method: E200.7 <br />Sample ID: MB-101112A 5 Method Blank Run: ICP2-C_101112A 11/12/10 12:42 <br />Calcium ND mg/L 0.2 <br />Magnesium ND mg1L 0.05 <br />Potassium ND mg/L 0.02 <br />Sodium ND mg/L 0.3 <br />Zinc ND mg/L 0.001 <br />Sample ID: LFB-101112A 5 Laboratory Fortified Blank Run: ICP2-C_101112A 11/12/10 12:46 <br />Calcium 48.6 mg/L 0.50 97 85 115 <br />Magnesium 48.9 mg/L 0.50 98 85 115 <br />Potassium 43.6 mg/L 0.50 87 85 115 <br />Sodium 49.6 mg/L 0.50 99 85 115 <br />Zinc 0.966 mg/L 0.010 97 85 115 <br />Sample ID: C10101089-001BMS2 5 Sample Matrix Spike Run: ICP2-C_101112A 11/12/10 13:38 <br />Calcium 207 mglL 1.0 93 70 130 <br />Magnesium 124 mg/L 1.0 92 70 130 <br />Potassium 95.0 mg/L 1.0 84 70 130 <br />Sodium 289 mg/L 1.0 100 70 130 <br />Zinc 1.94 mg/L 0.010 94 70 130 <br />Sample ID: C10101089-001BMSD 5 Sample Matrix Spike Duplicate Run: ICP2-C_101112A 11/12/10 13:42 <br />Calcium 207 mg/L 1.0 94 70 130 0.2 20 <br />Magnesium 125 mg/L 1.0 93 70 130 1.1 20 <br />Potassium 96.8 mg/L 1.0 85 70 130 1.9 20 <br />Sodium 292 mg/L 1.0 102 70 130 0.9 20 <br />Zinc 1.92 mg/L 0.010 93 70 130 0.8 20 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 9 of 26