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ENERGY <br />Af71014{11 Oh l� <br />Client: Cotter Corporation <br />Project: Schwartz -SW 9/05/12 S26562 Work Order: C12090140 <br />Analyte <br />Method: RA -05 <br />Sample ID: LCS- 228 -RA226 -6217 <br />Radium 228 <br />Sample ID: MB -RA226 -6217 <br />Radium 228 <br />Radium 228 precision ( ±) <br />Radium 228 MDC <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />www.energylab.com Helena, MT 877 - 472 - 0711 • Billings, MT 800 - 735 - 4489 • Casper, WY 888 - 235 - 0515 <br />Analylical Exeea$aece Since 1852 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 />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Laboratory Control Sample <br />3.8 pCi /L <br />3 Method Blank <br />-0.8 pCi /L <br />0.9 pCi /L <br />2 pCi /L <br />Sample ID: C12090107- 001HMS Sample Matrix Spike <br />Run: TENNELEC- 3_120907A <br />97 80 120 <br />Run TENNELEC- 3_120907A <br />Radium 228 8.0 pCi /L 80 70 130 <br />Report Date: 10/02/12 <br />Run: TENNELEC- 3_120907A 09/13/12 19.00 <br />Sample ID: 012090107- 001HMSD Sample Matrix Spike Duplicate Run: TENNELEC- 3_120907A 09/13/12 19:00 <br />Radium 228 9.5 pCi /L 96 70 130 18 53.3 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Batch: RA228 -4219 <br />09/13/12 19:00 <br />Page 25 of 28 <br />09/13/12 19:00 <br />U <br />