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www.energyiab.com Helena, MT 877-472-0711 - Billings, MT 800-135-4489 • Casper, WY 888-235-0515 <br />AaVlyHra/brea9eaaaVoea 1952 Gillette, yiY 666-686-7175 ° Rapid City, 50 888-672-1125 G College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Sampling Program-Ground Water <br />Analyte Count Result Units RL %REC Low Limit <br /> <br />Report Date: 01/21/11 <br />Work Order: 010120819 <br />High Limit RPD RPDLimit Clual <br />Method: E200.7 Batch: 28680 <br />Sample ID: MB-28680 3 Method Blank Run: ICP2-C_110105A 01/05/11 18:22 <br />Aluminum ND mg/L 0.01 <br />Iron ND mg/L 0.008 <br />Manganese ND mg/L 0.0008 <br />Sample ID: LCS3-28680 3 Laboratory Control Sample Run: ICP2-C_110105A 01/05/11 18:26 <br />Aluminum 2.66 mgil- 010 106 85 115 <br />Iron 2.69 mg/L 0.030 108 85 115 <br />Manganese 2.72 mg/L 0.010 109 85 115 <br />Sample ID: 010120838-001BMS3 3 Sample Matrix Spike Run: ICP2-C_110105A 01/05/11 19:11 <br />Aluminum 2.5 mg/L 0.10 101 70 130 <br />Iron 2.5 mg/L 0.030 100 70 130 <br />Manganese 2.5 mg/L 0.010 102 70 130 <br />Sample ID: C10120838.001BMSD 3 Sample Matrix Spike Duplicate Run: ICP2-C_.110105A 01/05/11 19:15 <br />Aluminum 2.6 mg/L 0.10 102 70 130 1.6 20 <br />Iron 2.5 mg/L 0.030 102 70 130 11 20 <br />Manganese 2.6 mg/L 0.010 103 70 130 1.2 20 <br /> <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 9 of 25