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ENERGY <br />LAE3OFtATORIES <br />Client: Cotter Corporation <br />Project: Schwartz GW 8/31/2012 S26629 <br />Analyte <br />Method: E903.0 <br />Sample ID: LCS -RA226 -6211 <br />Radium 226 <br />Radium 226 <br />www.energylab.com <br />An41ks1 frce/knca Since 1952 J <br />Count Result Units <br />Laboratory Control Sample <br />6.5 pCi /L <br />Sample ID: C12081277 -001 FMS Sample Matrix Spike <br />14 pCi /L <br />Sample ID: C12081277 -001FMSD Sample Matrix Spike Duplicate <br />Radium 226 <br />Sample ID: MB- RA226 -6211 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />3 Method Blank <br />-0.1 <br />0.08 <br />0.2 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />14 pCi /L <br />pCi /L <br />pCi /L <br />pCi /L <br />Helena, MT 877 472 - 0711 • Billings, MT 800 - 735 - 4469 • Casper, WY 888 - 235 - 0515 <br />Gillette, WY 866 - 686 - 7175 • Rapid City, SD 888 672 - 1225 • College Station, TX 888 - 690 - 2218 <br />Revised Date: 11/01/12 <br />Report Date: 10/05/12 <br />Work Order: C12090026 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Run: BERTHOLD 770- 2_120905A <br />105 80 120 <br />Batch: RA226 -6211 <br />09/12/12 15:55 <br />Run: BERTHOLD 770- 2_120905A 09/12/12 15:55 <br />107 70 130 <br />Run: BERTHOLD 770- 2_120905A 09/12/12 15:55 <br />105 70 130 1.7 25.6 <br />Run: BERTHOLD 770-2_120905A <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />09/12/12 19:00 <br />U <br />Page 17 of 20 <br />