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www.energylab.com !!! _ _ Helena, MT 077-472-0711 • Billings, lAT 800-735-4489 # Casper, WY 888-235-0515 <br />.. M Anna! f oUsmaSlrue 1952 I Gillette, WY 866-686-7175 -Rapid City, SD 888-672-1225 - College Station, TX 888-600-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program-Discharge <br />Analyte Count Result Units <br />Report Date: 10/08/10 <br />Work Order: C10090289 <br />RL %REC Low Limit High Limit RPD RPDLImtt Qual <br />Method: E903.0 <br />Sample ID: C10090149-002AMS <br />Radium 226 <br />Sample ID: C10090149-002AMSD <br />Radium 226 <br />Sample ID: MB-RA226-4795 <br />Radium 226 <br />Radium 226 precision (±) <br />Radium 226 MDC <br />Sample ID: LCS-RA226.4795 <br />Radium 226 <br />Sample Matrix Spike <br />15 pCi/L <br />Sample Matrix Spike Duplicate <br />16 pCi/L <br />3 Method Blank <br />-0.2 pCi/L <br />0.1 pCVL <br />0.3 pCi/L <br />Laboratory Control Sample <br />8.4 pCi/L <br />Batch: RA226-4795 <br />Run: BERTHOLD 770.2_100914A 09/26/10 13:58 <br />98 70 130 <br />Run: BERTHOLD 770-2100914A 09126/10 13:58 <br />103 70 130 6.6 24 <br />Run: BERTHOLD 770-2_100914A 09/26/10 15:46 <br />U <br />Run: BERTHOLD 770-2_100914A 09/26/10 15:46 <br />109 70 130 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum delectable concentration U - Not detected at minimum detectable concentration <br />Page 4 of 8