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<br /> <br />R. G. OTTO & ASSOCIATES <br /> <br /> <br />~4 <br />The precipitate was spread uniformly over the bottom of a tarred, <br />50 cc counting jar. After a two week ingrowth for rado~s, each <br />sample was counted ~C^_~ oinutes in a Ge(Li) detector. Tl~a <br />detection level for this procedure is 1.1 pCi/L for Ra-'Z28 and 0.5 <br />pCi/L for Ra-226. All analytical procedures except those for <br />Ra-226 and Ra-228) were submitted to the Water Quality ~~ontrol <br />Division for approval prior to the initiation of sampli:nq. The <br />USGS codes for each paraseter/analysis as indexed to Open-File <br />Report 82-272 are included is Table 2. <br />19 <br />