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www.energylab.com Helena, MT 677-472-0711 • Billings, MT 800-735-4489 + Casper WY 888-235.0515 <br />.. Y dnarytica/FZCeBense S1rrc? 185? Gillette, WY 866-686-7175 • Rapid City, SD 889-672-1225 . College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program <br />Analyle Count Result Units <br />Report Date: 08/16110 <br />Work Order: C10070913 <br />RL %REC Low Limit High Limit RPD RPOLimit Qual <br />Method: E903.0 <br />Sample ID: TAP WATER-MS <br />Radium 226 <br />Sample ID: TAP WATER-MSD <br />Radium 226 <br />Sample ID: LCS-RA226-4688 <br />Radium 226 <br />Sample ID: MB-RA226-4688 <br />Radium 226 <br />Radium 225 precision (±) <br />Radium 226 MDC <br />Sample Matrix Spike <br />16 pCi/L <br />Sample Matrix Spike Duplicate <br />17 pCi/L <br />Laboratory Control Sample <br />9.0 pCi/L <br />3 Method Blank <br />-0.05 pCi/L <br />0.08 pCi/L <br />0.2 pCi/L <br />Balch: RA226-4688 <br />Run: BERTHOLD 770-2_100728B 08/04/10 13:58 <br />100 70 130 <br />Run. BERTHOLD 770-2_1007286 08/04/10 13:58 <br />106 70 130 5.1 24.9 <br />Run: BERTHOLD 770-2_100728B 08/04/10 13:58 <br />114 70 130 <br />Run: BERTHOLD 770-2100728B 08/04/10 13:58 <br />U <br />............ _ <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />U - Nol detected at minimum detectable concentration <br />Page 40 of 45