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ENERGY <br />I. Ar3U1.`P I U - i: _i <br />IV <br />Client: Cotter Corporation <br />Project: Schwartz SW 7 -12 -12 S26517 Work Order: C12070481 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: RA -05 <br />Sample ID: LCS- 228 -RA226 -6108 <br />Radium 228 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />www.energylab.com <br />AualytiraIFaroams Shia 1952 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Laboratory Control Sample <br />4.8 pCi /L <br />Helena, Mr 877- 472 -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 />Run: TENNELEC- 3_120718B <br />105 80 120 <br />Report Date: 08/22/12 <br />Batch: RA228 -4166 <br />07/23/12 20:42 <br />Sample ID: MB -RA226 -6108 3 Method Blank Run: TENNELEC- 3_120718B 07/23/12 20:42 <br />Radium 228 -0.2 pCi /L U <br />Radium 228 precision ( ±) 0.6 pCi /L <br />Radium 228 MDC 1 pCi /L <br />Sample ID: C12070273- 012ADUP 3 Sample Duplicate Run: TENNELEC- 3_120718B 07/23/12 20:42 <br />Radium 228 0.20 pCi /L 61 869 U <br />Radium 228 precision ( ±) 0.66 pCi /L <br />Radium 228 MDC 1.1 pCi /L <br />Sample ID: C12070273- 028AMS Sample Matrix Spike Run: TENNELEC- 3_120718B 07/23/12 20.42 <br />Radium 228 9.8 pCi /L 97 70 130 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 22 of 25 <br />