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wisw.eneieab.com e7 X72-0711 • Billings, MT 800-735-4419 a Casper, WY d88-235-0515 <br />"*koauamam tm2 "Rapid City, SC 116-672-1225 • college Station, TX a@8-691-2216 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 03/04/11 <br />Project: Schwartz GW 02-09-11 S25579 Work Order: C11020422 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E903.0 Batch: RA226-5193 <br />Sample ID: C11020554-003EMS Sample Matrix Spike Run: TENNELEC-3_110223A 03/01/11 16:37 <br />Radium 226 14 pCi/L 109 80 120 <br />Sample ID: C11020554-003EMSD Sample Matrix Spike Duplicate Run: TENNELEC-3_110223A 03/01/11 16:37 <br />Radium 226 13 pCi/L 99 80 120 9.1 26 <br />Sample ID: LCS-RA226-5193 Laboratory Con trol Sample Run: TENNELEC-3_110223A 03/01/11 21:43 <br />Radium 226 6.6 pCi/L 101 90 110 <br />Sample ID: MB-RA226-5193 3 Method Blank Run: TENNELEC-3_110223A 03/01/11 21:43 <br />Radium 226 0.19 pCi/L <br />Radium 226 precision (±) 0.097 pCi/L <br />Radium 226 MDC 0.11 pCi/L <br />Oualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 19 of 22 <br />s ?_;.;.o4m?r fsvwpAi?la°' 1 ?xara n-?::i?« a -= -` i?++es? ??rs__ e.?cut