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• www.energylab com Helena MT 877- 472 -0711 • Billings, MT 800 - 735 -4489 • Casper, WY 888 - 235 -0515 <br />Analyfica/ExcellenceSince 195? 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: O'Connor Design Inc Report Date: 06/18/12 <br />Project: CM -25 Work Order: C12050462 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E900.0 <br />Batch GrAB -1280 <br />Sample ID: Th230 -GrAB -1280 <br />Laboratory Control Sample <br />Run: G542M_120531A <br />06/02/12 06:29 <br />Gross Alpha <br />199 pCi /L <br />98 80 120 <br />Sample ID: MB -GrAB -1280 <br />3 Method Blank <br />Run G542M_120531A <br />06/02/12 06,29 <br />Gross Alpha <br />-1 pCi /L <br />U <br />Gross Alpha precision (t) <br />0.9 pCi /L <br />Gross Alpha MDC <br />2 pCi /L <br />Sample ID: C12050179- 001ADUP <br />3 Sample Duplicate <br />Run. G542M_120531A <br />06/02/12 06:29 <br />Gross Alpha <br />73.3 pCi /L <br />22 21 R <br />Gross Alpha precision (t} <br />3.83 pCi /L <br />Gross Alpha MDC <br />217 pCi /L <br />Duplicate RPD is outside of the acceptance range for this analysis indicating a possible low precision for the batch. The sample associated with this Duplicate has been <br />reanalyzed and the results for the reanalysis are shown on the Analytical Report for that sample <br />Sample ID: C12050180- 001AMS <br />Sample Matrix Spike <br />Run G542M_120531A <br />06/02/12 06:29 <br />Gross Alpha <br />212 pCi /L <br />104 70 130 <br />Sample ID: C12050180- 001AMSD <br />Sample Matrix Spike Duplicate <br />Run G542M_120531A <br />06/02/12 06'29 <br />Gross Alpha <br />199 pCi /L <br />98 70 130 <br />6.4 157 <br />Sample ID: MB -33625 <br />3 Method Blank <br />Run: G542M_120531A <br />06/02/12 0&29 <br />Gross Alpha <br />-03 pCi /L <br />U <br />Gross Alpha precision (t} <br />0.9 pCi /L <br />Gross Alpha MDC <br />1 pCi /L <br />Qualifiers: <br />L - Analyte reporting limit ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration R - RPD exceeds advisory limit. <br />U - Not detected at minimum detectable concentration <br />