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- ------------ - - - - -- <br />wwwzwgylab.com Helena, MT 877- 472 -0711 - Billings, MT 600- 735 -4469 - Casper, WY 888 - 235 -0515 <br />As*"&calawSm 1132 Gillette, WY 866 -686 -7175 - Rapid City, SO 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 />Report Date: <br />02/03/14 <br />Project: Schwartz GW 12/23/13 S27306 <br />Work Order: <br />C13120854 <br />[ Analyte <br />Count Result Units <br />RL ° /.REC <br />Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: RA -05 <br />Batch: RA228 -4583 <br />Sample ID: LCS- 228 -RA226 -7009 <br />Laboratory Control Sample <br />Run: TENNELEC- 3_131227C <br />01/02/14 12:53 <br />Radium 228 <br />9.0 pCi /L <br />108 <br />80 120 <br />Sample ID: MB -RA226 -7009 <br />3 Method Blank <br />Run: TENNELEC- 3_131227C <br />01/02/14 12:53 <br />Radium 228 <br />1 pCi /L <br />U <br />Radium 228 precision ( ±) <br />1 pCi /L <br />Radium 228 MDC <br />2 pCi /L <br />Sample eD: C13120700- 003EMS <br />Sample Matrix Spike <br />Run: TENNELEC- 3_131227C <br />01/02/14 12:53 <br />Radium 228 <br />17.4 pCi /L <br />115 <br />70 130 <br />Sample ID: C13120700- 003EMSD <br />Sample Matrix Spike Duplicate <br />Run: TENNELEC- 3_131227C <br />01/02/14 12:53 <br />Radium 228 <br />15.5 pCi /L <br />102 <br />70 130 11 <br />36.3 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 26 of 31 <br />