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www.energylabxom Helena, MT 877472-0711 - Billings, MT 600-735-4489 - Casper, WY 888-235-0515 <br />Aea aasAow_78sY Dinette, WY 866-686-7175 - Rapid City, SD 866-612-1225 - College Station, Tx 88B-680-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/11 /11 <br />Project: Schwartz-SW 3/10/201 1 S25686-S25688 Work Order: C11030378 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Batch: RA226-5251 <br />Method: E903.0 <br />Sample ID: C11030550-001 EMS Sample Matrix S pike Run: G542M_110321A 03/27/11 17:00 <br />Radium 226 14.6 pCi/L 105 70 130 <br />Sample ID: C1 1030550-001 EMSD Sample Matrix S pike Duplicate Run: G542M_l10321A 03/27/11 17:00 <br />Radium 226 13.7 pCi/L 98 70 130 6.6 25.4 <br />Sample ID: MB-RA226-5251 3 Method Blank Run: G542M_110321A 03/27/11 17:00 <br />Radium 226 0.063 pCi/L U <br />Radium 226 precision (±) 0.11 pCi/L <br />Radium 226 MDC 0.18 pCi/L <br />Sample ID: LCS-RA226-5251 Laboratory Control Sample Run: G542M_110321A 03/27/11 17:00 <br />Radium 226 6.8 pCi/L 106 85 115 <br />Method: E903.0 <br />Sample ID: 011030211-003DMS <br />Radium 226 <br />Sample ID: C11030211-003DMSD <br />Radium 226 <br />Sample ID: LCS-RA226-5235 <br />Radium 226 <br />Sample ID: MB-RA226-5235 <br />Radium 226 <br />Radium 226 precision (±) <br />Radium 226 MDC <br />Sample Matrix Spike <br />14 pCi/L <br />Sample Matrix Spike Duplicate <br />14 pCi/L <br />Laboratory Control Sample <br />6.2 pCi/L <br />3 Method Blank <br />0.17 pCi/L <br />0.11 pCi/L <br />0.13 pCi/L <br />Batch: RA226-b23b <br />Run: TENNELEC-3_110315B 03/21/11 17:17 <br />109 70 130 <br />Run: TENNELEC-3_110315B 03/21/11 17:17 <br />111 70 130 1.7 25.1 <br />Run: TENNELEC-3 110315B 03/21/11 20:55 <br />95 85 115 <br />Run: TENNELEC-3 110315B 03/21/11 20:55 <br />Method: E903.0 <br />Sample ID: C11030378-003FMS <br />Radium 226 <br />Sample ID: C11030378-003FMSD <br />Radium 226 <br />Sample ID: MB-RA226-5247 <br />Radium 226 <br />Radium 226 precision (±) <br />Radium 226 MDC <br />Sample ID: LCS-RA226-5247 <br />Radium 226 <br />Sample Matrix Spike <br />13 pCi/L <br />Sample Matrix Spike Duplicate <br />12 pCi/L <br />3 Method Blank <br />0.078 pCi/L <br />0.074 pCi/L <br />0.10 pCi/L <br />Laboratory Control Sample <br />6.2 pCi/L <br />Run: TENNELEC-3_110318H <br />96 70 130 <br />Run: TENNELEC-3_110318H <br />90 70 130 5.7 <br />Run: TENNELEC-3 110318H <br />Run: TENNELEC-3_110318H <br />97 85 115 <br />Batch: RA226-b24/ <br />04/05/11 08:41 <br />04/05/11 08:41 <br />24.2 <br />04/05/11 08:41 <br />U <br />04/05/11 08:41 <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 22 of 29