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.. --. - -- ...... .... <br />www.energylab.com Helena, MT 811-472-0711 • Billings, MT 800-735-4489 * Casper, WY 088-235-0515 <br />_ . •, : _ ,.??/ AnalyL'ea/fxceflaueeSlncr 1851 Gillette, WY 866-686-7175 0 Rapid City, SD 888-672-1225 - College Station, TX 888-69D-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program - SW <br />Analyte Count Result Units <br />Report Date: 12110/10 <br />Work Order: C10110203 <br />RL %REC Low Limit High Limit RPD RPDLlmit Qual <br />Melnod: RA-05 <br />Sample ID: LCS-228-RA226.5005 Laboratory Control Sample <br />Radium 228 8.85 pCi/L <br />Sample ID: MB-RA226-5005 3 Method Blank <br />Radium 228 1 pCi/L <br />Radium 228 precision (±) 0.8 pCi/L <br />Radium 228 MDC 1 pCi/L <br />Sample ID: C1 01 10203-008FMS Sample Matrix Spike <br />Radium 228 16.5 pCi/L <br />Sample ID: C10110203.008FMSD Sample Matrix Spike Duplicate <br />Radium 228 15.0 pCi/L <br />Qualifiers: <br />RL - Analyle reporting limit. <br />MDC - Minimum detectable concentration <br />Batch: RA228.3493 <br />Run: TENNELEC-3101115E 11/23/10 10:35 <br />105 70 130 <br />Run: TENNELEC-3_101115E 11/23/10 10:35 <br />U <br />Run: TENNELEC-3-101115E 11123/10 10:35 <br />105 70 130 <br />Run: TENNELEC-3_101115E 11/23110 10:35 <br />94 70 130 10 32 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 32 of 43