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.. __..... __.... <br />\ www.energylab.cam Helena, 141877-472-0711 » Billings, tAT 800-735-4489 -Casper, WY 888-235-0515 <br />Ma(y!leslfxca0eaceSlnce 1957 ( Gillette, WY 866-686-7175 -Rapid City, SD 888-672-1225 -College Station, TX 888-690.2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/05/11 <br />Project: Schwartzwalder Mine Monitoring Program-Surface Wat Work Order: C10110690 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Dual <br />Method: A2540 D Batch: R140187 <br />Sample ID: MBLK1_ Method Blank Run: BAL-1_101122A 11/22/10 11:47 <br />Solids, Total Suspended TSS @ 105 C ND mg/L 0.3 <br />Sample ID: LCS1_ Laboratory Control Sample Run: BAL•1_101122A 11122/10 11:47 <br />Solids, Total Suspended TSS @ 105 C 208 mg/L 4.0 104 60 110 <br />Sample ID: C1 01 1 06 9 0-0 07BDUP Sample Duplicate Run: BAL-1__101122A 11/22/10 11:48 <br />Solids, Total Suspended TSS @ 105 C ND mg/L 4.0 25 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum delectable concentration <br />Page 14 of 39