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No enewe0 min ( Melons, AR 977472-0711 • Billings, NI 011-735-4 40 • Casper, WY M-235-0316 <br />AebeiralOwllnew2 a rar Ji 6ikb, W ai-iN-7176 • Rapid CRY, s6 888472-1226 • College Statilan, TX W-11,1111-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Mine <br />Report Date: 10/12/10 <br />Work Order: C10090382 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: RA-05 Batch: RA228-3388 <br />Sample ID: LCS-228-RA226.4811 Laboratory Control Sample Run: TENNELEC-3_10092OF 09/30/10 09:51 <br />Radium 228 7.96 pCi/L 103 70 130 <br />Sample ID: MB-RA2264811 3 Method Blank Run: TENNELEC-3_10092OF 09/30/10 09:51 <br />Radium 228 0.4 pCi/L U <br />Radium 228 precision (±) 0.7 pCi/L <br />Radium 228 MDC 1 pCi/L <br />Sample ID: C10090382.005FMS Sample Matrix Spike Run: TENNELEC-3_100920F 09130/10 09:51 <br />Radium 228 15 pCi/L 100 70 130 <br />Sample ID: C10090382.005FMSD Sample Matrix Spike Duplicate Run: TENNELEC-3_10092OF 09/30/10 09:51 <br />Radium 228 15 pCi/L 102 70 130 3.2 36.8 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 28 of 36