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,?mrl'ereer.nswrasr <br />CLIENT: Cotter Corporation <br />Project: Schwartmalder Water Monitoring Program <br />Sample Delivery Group: C10060510 <br />Helena, Mr $17472-0111 •9lMnl; W 110-73?f' -418! • cesper, WY HO-235-0615 <br />Y 886488-1175 • Rapid CRx SO 888.872-1225 • Colep Station, lit 888-668-2218 <br />Revised Date: 08/11/10 <br />Report Date: 07/06/10 <br />CASE NARRATIVE <br />REVISED/SUPPLEMENTAL REPORT <br />The attached analytical report has been revised from a previously submitted report due to the request by Randy Whicker on <br />July 19, 2010 for the addition of analyses and Sample ID changes as listed in the attached email. <br />RA226 ANALYSIS <br />The sample specific Minimum Detectable Concentration (MDC) as required by USNRC Regulatory Guide 4.14 could not be <br />achieved due to significant matrix interferences, restricting the volume of sample to be used in the analysis. Please consult <br />with your local regulatory agency prior to using these results for compliance purposes. <br />PREP COMMENTS <br />The prep hold time for the filtration of dissolved metals was exceeded by up to 1.2 days. <br />Page 3 of 68