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www.energylab.com I Helena, MY 677-472-0711 * Billings, MT 800-735-4489 • Casper, WY 888-235-051 <br />¦ ?? . Aasb'WEXC896we&We 1852 J Gillette, WY 866-686-7175 • Rapid CRY, SD 886-672-1225 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program-Discharge <br />onalvte Count Result Units <br />Report Date: 01 /12/11 <br />Work order: C10120539 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: RA-05 <br />Sample ID: LCS-228-RA226-5071 Laboratory Control Sample <br />Radium 228 6.36 pCi/L <br />Sample ID: MB-RA226-5071 3 Method Blank <br />Radium 228 0.139 pCi/L <br />Radium 228 precision (±) 0.638 pCi/L <br />Radium 228 MDC 1.06 pCi/L <br />Sample ID: C10120549-001DMS Sample Matrix Spike <br />Radium 228 14.6 pCi/L <br />Sample ID: 010120549-001DMSD Sample Matrix Spike Duplicate <br />Radium 228 14.7 pCi/L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />DdWi t. 11- -- <br />Run: TENNELEC-3_101220A 12/28/10 11:07 <br />87 70 130 <br />Run: TENNELEC-3_101220A 12/28/10 11:07 <br />U <br />Run: TENNELEC-3_101220A 12/28/10 11:07 <br />106 70 130 <br />Run: TENNELEC-3_101220A 12/28/10 11:07 <br />106 70 130 0.3 38.3 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 5 of 8