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• Billings, MT 908-7354459 • Ca3per,,YN11 -1354513 <br />?t;, to 22"72-1225 • coilaae Station. TX 8s6.61D-1218 <br />Client: Cotter Corporation Report Date: 12/28/10 <br />Project: Schwartzwalder Mine Monitoring Program-Discharge Work order: C10110835 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch R141121 <br />Method: E200.8 <br />M thod Blank Run: ICPMS2-C_101220A 12/20/10 14:49 <br />Sample ID: LRB e <br /> <br />Silver 7.80E-05 mg/L 0.00020 <br />Sample ID: LFB Laboratory Fortified Blank Run: ICPMS2-C_101220A 12/20/10 14:56 <br />Silver 0.0196 mg/L 0.0010 98 85 115 <br />Sample ID: C1 0110835-001 EMS4 Sample Matrix Spike Run: ICPMS2-C_101220A 12121110 07:09 <br />Silver 0.0118 mg/L 0.010 59 70 130 S <br />Sample ID: C1 0110835-001 EMSD Sample Matrix Spike Duplicate Run: ICPMS2-C_101220A 12/21/10 07:16 <br />Silver 0.0145 mg/L 0.010 73 70 130 21 20 R <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />S - Spike recovery outside of advisory limits. <br />ND - Not detected at the reporting limit. <br />R - RPD exceeds advisory limit. <br />Page 12 of 23 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch