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1 ' www.enu6ab.com Helena, W 877- 472 -0711 - Billings, MT 800 -735 -4489 - Casper, WY 808- 235 -0515 <br />Gillette, WY 866 -686 -7175 • Rapid City, SD 888 - 672 -1225 - College Station, Tx 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz GW 05/18/13 S26985 & S26986 <br />Analyte Count Result <br />Units <br />Method: E900.0 <br />73 <br />70 130 <br />Sample ID: Th230 -GrAB -1543 <br />Laboratory Control Sample <br />Gross Alpha <br />112 <br />pCi /L <br />Sample ID: Sr90 -GrAB -1543 <br />Laboratory Control Sample <br />Gross Beta <br />170 <br />pCi /L <br />Sample ID: MB -GrAB -1543 <br />6 Method Blank <br />Gross Alpha <br />-0.9 <br />pCi /L <br />Gross Alpha precision ( ±) <br />0.7 <br />pCi /L <br />Gross Alpha MDC <br />1 <br />pCi /L <br />Gross Beta <br />-3 <br />pCi /L <br />Gross Beta precision ( ±) <br />2 <br />pCi /L <br />Gross Beta MDC <br />3 <br />pCi /L <br />Sample ID: C13050721- 002HDUP <br />6 Sample Duplicate <br />Gross Alpha <br />552 <br />pCi /L <br />Gross Alpha precision ( ±) <br />9.30 <br />pCi /L <br />Gross Alpha MDC <br />2.91 <br />pCi /L <br />Gross Beta <br />106 <br />pCi /L <br />Gross Beta precision ( ±) <br />4.08 <br />pCi /L <br />Gross Beta MDC <br />3.60 <br />pCi /L <br />Sample ID: C13050737- 009EMS <br />Sample Matrix Spike <br />Gross Alpha <br />138 <br />pCi /L <br />Sample ID: C13050737- 009EMSD <br />Sample Matrix Spike Duplicate <br />Gross Alpha <br />140 <br />pCi /L <br />Sample ID: C13050737- 009EMS <br />Sample Matrix Spike <br />Gross Beta <br />207 <br />pC ✓L <br />Sample ID: C13050737- 009EMSD <br />Sample Matrix Spike Duplicate <br />Gross Beta <br />206 <br />pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 06/11/13 <br />Work Order: C13050721 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: GrAB -1543 <br />Run: G5000W_130604A 06/05/13 16:32 <br />108 80 120 <br />Run: G5000W_130604A 06/05/13 16:32 <br />95 80 120 <br />Run: G5000W 130604A 06/05/13 16:32 <br />U <br />U <br />Run: G5000W_130604A 06/05/13 16:32 <br />3.8 13.3 <br />12 17.6 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 19 of 24 <br />Run: G5000W_130604A <br />06/06/13 04:54 <br />73 <br />70 130 <br />Run: G5000W_130604A <br />06/06/13 04:54 <br />74 <br />70 130 0.9 <br />15.9 <br />Run: G5000W_130604A <br />06/06/13 04:54 <br />99 <br />70 130 <br />Run: G5000W_130604A <br />06/06/13 04:54 <br />99 <br />70 130 0.2 <br />13.8 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 19 of 24 <br />