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ENERGY <br />LAOOIZ <br />Client: Cotter Corporation <br />Project: Schwartz Monitoring Program 7/5/2012 S26552 Work Order: C12070208 <br />Analyte <br />Method: E903.0 <br />Sample ID: C12070481- 001EMS <br />Radium 226 <br />Sample ID: C12070481 -001EMSD Sample Matrix Spike Duplicate Run: BERTHOLD 770- 1_120723B 07/30/12 10:46 <br />Radium 226 15 pCi /L 107 70 130 9.9 24.9 <br />Sample ID: MB- RA226 -6123 3 Method Blank Run: BERTHOLD 770- 1_120723B 07/30/12 12:49 <br />Radium 226 -0.06 pCi /L U <br />Radium 226 precision ( ±) 0.09 pCi /L <br />Radium 226 MDC 0.2 pCi /L <br />Sample ID: LCS -RA226 -6123 Laboratory Control Sample <br />Radium 226 6.6 pCi /L 105 80 120 <br />Method: E903.0 <br />Sample ID: LCS -RA226 -6104 <br />Radium 226 <br />Sample ID: MB -RA226 -6104 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />www.energylab.com , Helena, MT 871 -412 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888 - 235 -0515 <br />Aeslydal Excellence Since lass Gillette, WY 866 686 - 7175 • Rapid City, SD 888 672 - 1225 • College Station, TX 888 - 690 - 2218 <br />Sample Matrix Spike <br />14 pCi /L <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 />5.8 pCi /L <br />Sample ID: C12070165 -003HMSD Sample Matrix Spike Duplicate <br />Radium 226 20 pCi /L <br />3 Method Blank <br />-0.2 pCi /L <br />0.09 pCi /L <br />0.2 pCi /L <br />Report Date: 08/13/12 <br />Batch: RA226 -6123 <br />Run: BERTHOLD 770- 1_120723B 07/30/12 10:46 <br />96 70 130 <br />Run: BERTHOLD 770- 1_120723B 07/30/12 12:49 <br />Run: BERTHOLD 770- 2_120713A <br />97 80 120 <br />Sample ID: C12070165- 003HMS Sample Matrix Spike Run: BERTHOLD 770- 2_120713A <br />Radium 226 20 pCi/L 109 70 130 <br />Run: BERTHOLD 770- 2_120713A 07/24/12 08:27 <br />115 70 130 2.9 24.5 <br />Run: BERTHOLD 770-2_120713A <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Batch: RA226 -6104 <br />07/24/12 08:27 <br />Page 17 of 21 <br />07/24/12 08:27 <br />07/24/12 11:47 <br />U <br />