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www,energylab.com <br />Anary11p1FxcallanceSnca 1051 <br />_...... ........ _.__.. <br />Helena, MT 877-472-0711 a Billings, MT 800-735-4489 Casper, WY 688-235-0515 <br />Gillette, WY 865-686.7175 a Rapid City, S0 888-672-1225 a College Station, TX 888-690.2216 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/05111 <br />Project: Schwartzwalder Mine Monitoring Program-Surface Wat Work Order: C10110787 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E300.0 Batch: R140337 <br />Sample ID: MBLK 2 Method Blank Run: IC2-C_101123A 11/23/10 16:51 <br />Chloride ND mg/L 0.06 <br />Sulfate ND mg/L 0.2 <br />Sample ID: LCS 2 Laboratory Control Sample Run: IC2-C_101123A 11/23/10 17:06 <br />Chloride 9.20 mg/L 1.0 92 90 110 <br />Sulfate 37.3 mg/L 1.0 93 90 110 <br />Sample ID: C10110787-002BMS 2 Sample Matrix Spike Run: IC2-C_101 123A 11/24/10 04:40 <br />Chloride 65.8 mg/L 1.0 105 80 120 <br />Sulfate 200 mg/L 1.6 106 80 120 <br />Sample ID: C10110787-002SMSD 2 Sample Matrix Spike Duplicate Run: IC2-C_101 123A 11/24/10 04:55 <br />Chloride 65.1 mg/L 1.0 101 80 120 1.1 10 <br />Sulfate 198 mg/L 1.6 104 80 120 0.9 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum delectable concentration <br />ND - Not detected at the reporting limit. <br />Page 19 of 30