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? www.energylab.com ( Helena, MT 877-472-0711 W Billings, Mt 800-735-4489 m Casper, IVY 888-235-0515 <br />?" ,. n Matytfe?fExcef(srusSincs )95? <br />- ,, Gillette, WY 866-686-1175 1, Rapid City, SD 888-612-1225 m College Station, TX 888-690-2219 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/05/11 <br />Project: Schwartzwalder Mine Mon itoring Program-Surface Wat Work Order: C10110787 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A2540 D Balch: R140306 <br />Sample ID: MBLK1_ Method Blank Run: BAL-1 _101124A 11/24/10 09:07 <br />Solids, Total Suspended TSS @ 105 C ND mg/L 0.3 <br />Sample ID: LCS1__ Laboratory Control Sample Run: BAL-1_ _101124A 11/24/10 10:35 <br />Solids, Total Suspended TSS @ 105 C 140 mg/L 4.0 70 60 110 <br />Sample ID: C10110824-001CDUP Sample Duplicate Run: BAL-1 _101124A 11124/10 09:11 <br />Solids, Total Suspended TSS @ 105 C 60.0 mg/L 4.0 3.3 25 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 9 of 30 <br />