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www.ene #ab.com Helena, MY 877-472-0711 • Billings, Mi 888.735-4489 • Casper, WY 888-235-0515 <br />AubtW s Ysa'am IM Gillette, WY 866-686-7175 • Rapid City, SD 88B-672-1225 • College Station, TX 888-698-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz GW 3/24/11 S25646 & S25647 <br />Analyte Count Result Units <br />Method: E903.0 <br />Sample ID: C11030834-001 DMS Sample Matrix Spike <br />Radium 226 12 pCi/L <br />Sample ID: C1 1030834-001 DMSD Sample Matrix Spike Duplicate <br />Radium 226 10 pCi/L <br />Sample ID: MB-RA226-5269 3 Method Blank <br />Radium 226 0.051 pCi/L <br />Radium 226 precision (±) 0.067 pCi/L <br />Radium 226 MDC 0.10 pCi/L <br />Sample ID: LCS-RA226-5269 Laboratory Control Sample <br />Radium 226 6.3 pCi/L <br />Report Date: 04/19/11 <br />Work Order: C11030817 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: RA226-5269 <br />Run: TENNELEC-3_110330B 04/06/11 21:14 <br />93 70 130 <br />Run: TENNELEC-3_110330B 04/06/11 21:14 <br />78 70 130 18 25.1 <br />Run: TENNELEC-3_110330B 04/06/11 22:53 <br />U <br />Run: TENNELEC-3_110330B 04/06/11 22:53 <br />99 85 115 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 21 of 26