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°Helena, MT 877-472-0711 - Billings, MT 600-735-4489 - Casper WY 088-235-0515 <br />www.energylab.com <br />• Anatytical fxasllaaae SIM 1952 j Gillette, wy 865-686-7175 • Rapid City, SD 888-672-1225 9 Collage station, TX 888-690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartzwalder Mine <br />I An'Jr\/tP Count Result Units <br />---- -- <br />Report Date: 01 /19/11 <br />Work Order: C10120711 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A2540 C <br />Sample ID: MBLK1_101222 <br />Solids, Total Dissolved TDS @ 180 C <br />Sample ID: LCS1_101222 <br />Solids, Total Dissolved TDS @ 180 C <br />Sample ID: 010120711-001AMS <br />Solids, Total Dissolved TDS @ 180 C <br />Sample ID: C10120711-001AMSD <br />Solids, Total Dissolved TDS @ 180 C <br />Method Blank <br />ND mg/L <br />Laboratory Control Sample <br />981 mg/L <br />Sample Matrix Spike <br />2540 mg/L <br />Sample Matrix Spike Duplicate <br />2530 mg/L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />tsa[cn: 1 U I LLL_ 1_V? <br />Run: BAL-1_101222A 12/22/10 15:21 <br />10 <br />Run: BAL-1_101222A 12/22/10 15:21 <br />10 98 90 110 <br />Run: BAL-1_101222A 12/22/10 15:25 <br />10 103 90 110 <br />Run: BAL-1_101222A 12/22/10 15:25 <br />10 102 90 110 0.4 10 <br />ND - Not detected at the reporting limit. <br />Page 5 of 23