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ENERGY <br />4:4 <br />Client: Cotter Corporation <br />Project: Schwartz GW 4/27/12 S26359 Work Order: C12041332 <br />Analyte <br />Method: E903.0 <br />Sample ID: LCS -RA226 -5969 <br />Radium 226 <br />www.enerviab.com <br />Aeeyllal &Wean Mice 1152 <br />Laboratory Control Sample <br />6.6 pCi /L <br />Sample ID: C12041245- 001EMS Sample Matrix Spike <br />Helen, MT 877 -412 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888 - 235 -0515 <br />Gillette, WY 866 -686 -7175 • Rapid City, SD 888- 672 -1225 • College Station, TX 888 -690 -2218 <br />Radium 226 11 pCi /L 89 70 130 <br />Sample ID: MB- RA226 -5969 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />3 Method Blank <br />-0.10 pCi /L <br />0.07 pCi /L <br />0.2 pCi /L <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 06/06/12 <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Run: BERTHOLD 770-2_120501A <br />106 80 120 <br />Run: BERTHOLD 770-2_120501A 05/07/12 22:25 <br />Sample ID: 012041245 -001EMSD Sample Matrix Spike Duplicate Run: BERTHOLD 770- 2_120501A 05/07/12 22:25 <br />Radium 226 12 pCi /L 96 70 130 8.5 27.9 <br />Run: BERTHOLD 770-2_120501A <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 15 of 19 <br />Batch: RA226 -5969 <br />05/07/12 22:25 <br />05/08/12 00:06 <br />U <br />