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ENERGY <br />rrwwenergyleb com r Helena, MT 877 -412 -0711 • Billings, MT 880 - 735 -4489 • Casper, WY 888 -235 -0515 <br />A Eaoen=Shoe 1952 ) Gillette, WY 888 -686 -7175 • Rapid City, SO 888 -672 -1225 • College Station, TX 888 -690 -2218 <br />Client: Cotter Corporation <br />Project: Schwartz - SW 5/10/11 S26366- S26368 <br />Analyte <br />Method: E900.0 <br />Sample ID: Th230 -GrAB -1274 <br />Gross Alpha <br />Laboratory Control Sample <br />203 pCi /L <br />Sample ID: Cs137 -GrAB -1274 Laboratory Control Sample <br />Sample ID: MB -GrAB -1274 <br />Gross Alpha <br />Gross Alpha precision ( ±) <br />Gross Alpha MDC <br />Gross Beta <br />Gross Beta precision ( ±) <br />Gross Beta MDC <br />Sample ID: C12050234 -003ADUP 3 Sample Duplicate <br />Gross Alpha 1.62 pCi /L <br />Gross Alpha precision ( ±) 2.60 pCi /L <br />Gross Alpha MDC 4.21 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 06/13/12 <br />Work Order: C12050482 <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLImit Qua! 1 <br />6 Method Blank <br />-1 pCi /L <br />0.8 pCi /L <br />1 pCi /L <br />-2 pCi /L <br />2 pCi /L <br />3 pCi /L <br />Run: G5000W_120524C <br />99 80 120 <br />Gross Beta 178 pCi /L 96 80 120 <br />Run: G5000W_120524C 06/02/12 08:00 <br />Run: G5000W_120524C <br />Sample ID: C12050203 -001 EMS Sample Matrix Spike Run: G5000W_120524C 06/02/12 08:01 <br />Gross Alpha 226 pCi /L 105 70 130 <br />Sample ID: C12050203 -001 EMSD Sample Matrix Spike Duplicate Run: G5000W_120524C 06/02/12 08:01 <br />Gross Alpha 215 pCi /L 99 70 130 5.2 15.7 <br />Sample ID: C12050203 -001 EMS Sample Matrix Spike Run: G5000W_120524C 06/02/12 08:01 <br />Gross Beta 180 pCi /L 96 70 130 <br />Sample ID: C12050203 -001 EMSD Sample Matrix Spike Duplicate Run: G5000W_120524C 06/02/12 08:01 <br />Gross Beta 179 pCi /L 95 70 130 0.5 15.3 <br />Run: G5000W_120524C <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />06/02/12 08:01 <br />180 485 U <br />Page 23 of 30 <br />Batch: GrAB -1274 <br />06/02/12 08:00 <br />06/02/12 08:00 <br />U <br />U <br />