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• ~ i <br />Memo - Larry Oehler - M-88-112 - 2 - June 15, 1992 <br />The Santa Fe Formation, which comprises the first significant aquifer <br />below the collection pond and tailings facility, is a unit with <br />considerable lithologic variability. Individual beds within the <br />formation are highly lenticular. It is useful for purposes of <br />understanding the hydrogeology of the area, determining the adequacy of <br />the monitoring, and evaluating the remediation potential of the proposed <br />monitoring network, that correlations and characteristics of the Santa Fe <br />beds 6e established for the area in question. Such correlations, etc. <br />might be more easily made if the proposed drill holes were geop~hysically <br />logged. Reportedly, a number of relatively deep condemnation hales <br />drilled well into or thru the Santa Fe Formation in this area were <br />geophysically logged. <br />The operator should commit to run the same suite of geophysical logs of <br />the proposed new monitoring wells that were run for the condemnption <br />wells in the area. <br />JCS/ern <br />3445E <br />