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www.aweab.com <br />Ax**dL C SW NZ <br />1711 • Billings, MT 800-735-4419'• Casper, WY88$-235-0515 <br />pad, 0,4, 2'888-671-1225 - Cottage Station, TX 668=690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/01/11 <br />Project: Schwartz SW 03/01/1 1 S25651-S25658 Work Order: C11030134 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Oual <br />Method: E900.0 Batch: GrAB-1054 <br />Sample ID: MB-GrAB-1054 6 Method Blank Run: G5000W_110311 B 03/17/11 10:18 <br />Gross Alpha -0.8 pCi/L U <br />Gross Alpha precision (±) 0.7 pCi/L <br />Gross Alpha MDC 1 pCi/L <br />Gross Beta -1 pCi/L U <br />Gross Beta precision (±) 2 pCi/L <br />Gross Beta MDC 3 pCi/L <br />Sample ID: Th230-GrAB-1054 Laboratory Control Sample Run: G5000W_110311 B 03/17/11 10:18 <br />Gross Alpha 110 pCi/L 108 80 120 <br />Sample ID: Cs137-GrAB-1054 Laboratory Control Sample Run: G5000W_110311 B 03/17/11 10:18 <br />Gross Beta 93.9 pCi/L 108 80 120 <br />Sample ID: C11030010-003DDUP 6 Sample Duplicate Run: G5000W_110311 B 03/17/11 10:18 <br />Gross Alpha -0.421 pCi/L 340 397.9 U <br />Gross Alpha precision (±) 2.19 pCi/L <br />Gross Alpha MDC 3.76 pCi/L <br />Gross Beta 1.55 pCi/L 59 177 U <br />Gross Beta precision (±) 1.91 pCi/L <br />Gross Beta MDC 3.15 pCi/L <br />Sample ID: C11030280-005FMS Sample Matrix Spike Run: G5000W_110311 B 03/18/11 00:14 <br />Gross Alpha 127 pCi/L 112 70 130 <br />Sample ID: 011030280-005FMSD Sample Matrix Spike Duplicate Run: G5000W_110311 B 03/18/11 00:14 <br />Gross Alpha 123 pCi/L 107 70 130 3.9 17.6 <br />Sample ID: 011030280-005FMS Sample Matrix Spike Run: G5000W_110311 B 03/18/11 00:14 <br />Gross Beta 105 pCi/L 114 70 130 <br />Sample ID: C11030280-005FMSD Sample Matrix Spike Duplicate Run: G5000W_110311 B 03/18/11 00:14 <br />Gross Beta 101 pCi/L 110 70 130 3.2 15.7 <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 31 of 43 <br />