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ENERGY <br />4711 <br />Client: Cotter Corporation <br />Project: Schwartz GW 12/29/11 S26170- S26171 <br />Analyte <br />Method: E903.0 <br />Sample ID: MB -RA226 -5771 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample ID: LCS -RA226 -5771 <br />Radium 226 <br />Sample ID: C11120751- 001EMS <br />Radium 226 <br />Sample ID: C11120751- 001EMSD <br />Radium 226 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />www.energylab.com <br />A lyticalEres aOhm 1E2 <br />■ <br />Count Result Units <br />3 Method Blank <br />-0.031 <br />0.089 <br />0.17 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />pCi /L <br />pCi /L <br />pCi /L <br />Laboratory Control Sample <br />6.5 pCi /L <br />Sample Matrix Spike <br />15 pCi /L <br />Sample Matrix Spike Duplicate <br />16 pCi /L <br />Helena, MT 877 - 472 -0711 • Billings, MT 809- 735 -4489 • Casper, WY 888 - 235 -0515 <br />Gillette, WY 866 -686 -7175 • Rapid City, SO 888- 672 -1225 • College Station, TX 888 -690 -2218 <br />Report Date: 01/30/12 <br />Work Order: C11120864 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Run. BERTHOLD 770- 1_120103A <br />Batch: RA226 -5771 <br />01/09/12 12:56 <br />U <br />Run BERTHOLD 770- 1_120103A 01/09/12 12:56 <br />103 80 120 <br />Run BERTHOLD 770- 1_120103A 01/09/12 12:56 <br />117 70 130 <br />Run BERTHOLD 770- 1_120103A 01/09/12 12:56 <br />125 70 130 6.3 26 4 <br />ND - Not detected at the reporting limit <br />U - Not detected at minimum detectable concentration <br />Page 20 of 24 <br />