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ENERGY <br />'. AHURAI UNIt_s <br />Client: Cotter Corporation <br />Project: Schwartz GW 4/15/11 S25714 <br />Analyte <br />Count Result Units <br />RL %REC Low Limit High Limit RPD RPDLimit Qua! <br />Method: E900.0 <br />Sample ID: MB -GrAB -1077 <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: Th230 -GrAB -1077 <br />Gross Alpha <br />Sample ID: Cs137 -GrAB -1077 <br />Gross Beta <br />Sample ID: C11040710- 001AMS <br />Gross Alpha <br />Sample ID: C11040710- 001AMSD <br />Gross Alpha <br />Sample ID: C11040710- 001AMS <br />Gross Beta <br />Sample ID: C11040710- 001AMSD <br />Gross Beta <br />Sample ID: C11040774- 005ADUP <br />Gross Alpha <br />Gross Alpha precision ( ±) <br />Gross Alpha MDC <br />Gross Beta <br />www.erragylab.tom J Helena, MT 877 - 472 -0711 • Billings, MT 800 -735 -4488 • Casper, WY 888 - 235 -0515 <br />flash= Saw 18:12 Gillette, WY 866 -886 -7175 • Rapid City, SD 888 -872 -1225 • Collage Station, TX 888 - 680 -2218 <br />6 Method Blank <br />-1.75 <br />0.708 <br />1.40 <br />-0.748 <br />1.44 <br />2.43 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />U - Not detected at minimum detectable concentration <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />pCi /L <br />pCi /L <br />pCi /L <br />pCi /L <br />pCi /L <br />pCi /L <br />Laboratory Control Sample <br />90.3 pCi /L <br />Laboratory Control Sample <br />94.3 pCi /L <br />Sample Matrix Spike <br />107 pCi /L <br />Sample Matrix Spike Duplicate <br />107 pCi /L <br />Sample Matrix Spike <br />91.0 pCi /L <br />Sample Matrix Spike Duplicate <br />94.7 pCi /L <br />6 Sample Duplicate <br />5.88 <br />5.81 <br />9.18 <br />2.36 <br />Gross Beta precision ( ±) 2.66 <br />Gross Beta MDC 4.39 <br />- The Sample and the Duplicate are both below the MDC; the RPD is acceptable. <br />pCi /L <br />pCi /L <br />pCi /L <br />pCi /L <br />pCi /L <br />pCi /L <br />Run: G542M 110428A <br />Run: G542M_110428A <br />90 80 120 <br />Run: G542M_110428A <br />108 80 120 <br />Run: G542M_110428A <br />104 70 130 <br />Run: G542M_110428A <br />104 70 130 <br />Run: G542M_110428A <br />99 70 130 <br />Run: G542M_110428A <br />103 70 130 <br />Run: G542M 110428A <br />ND - Not detected at the reporting limit. <br />R - RPD exceeds advisory limit. <br />Report Date: 05/17/11 <br />Work Order: C11040550 <br />0.0 <br />Page 14 of 19 <br />Batch: GrAB -1077 <br />05/04/11 00:02 <br />U <br />U <br />05/04/11 00:02 <br />05/04/11 00:02 <br />05/04/11 12:18 <br />05/04/11 12:18 <br />17.7 <br />05/04/11 12:18 <br />05/04/11 12:18 <br />4.0 15.8 <br />05/04/11 12:18 <br />2000 174.3 UR <br />500 299 UR <br />