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rwrraierd AXOM Hdase, W 177.472-1711 • linllnRs, W 168-776.41!9 • Casper. Y IISII-236-0515 <br />•my sue. rm -- Gillette, MAY Iii-696-7175 • Rgld Ci1Y6 SO U1-672-1216 P Coltap Slallmh U BOMII.2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 08126110 <br />Project: Schwartzwalder Water Monitoring Program Work Order: 010071062 <br />Analyte Count Result Units RL %REC Low Limit Hlgh Limit RPD RPDLlmll Qual <br />Method: RA-05 Batch: RA228-3303 <br />Sample ID: LCS-228-RA226.4696 Laboratory Control Sample Run: TENNELEC-3-100802A 08/05/10 15:39 <br />Radium 228 5.97 pCi/L 81 70 130 <br />Sample ID: MB-AA226-4696 3 Method Blank Run: TENNELEC-3_100802A 06/05110 15:39 <br />Radium 228 -0.09 pCi/L u <br />Radium 221 precision (t) 0.6 pCi/L <br />Radium 228 MDC 1.0 pCi/L <br />Sample ID: C10070984-001CMS Sample Matrix Spike Run: TENNELEC-3-100802A 0810511 0 15:39 <br />Radium 228 14.1 pCi/L 94 70 130 <br />Sample ID: C10070984.001CMSD Sample Matrix Spike Duplicate Run: TENNELEC-3-100802A Oa/05/1015:39 <br />Radium 228 15.2 pCi/L 102 70 130 7.9 33.7 <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 24 of 29