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' and selenium have also been eliminated from all stations except well W-16 located in the <br />reclaimed area of the east pit. Water quality sampling of the Stollsteimer Creek alluvium <br />was added to station A-1 and eliminated from station W-1. Frequency of sampling, depth- <br />to-water measurements, and stream discharge measurements were not changed by this <br />revision. In June 1988, the CMLRD approved a technical revision to conduct this monitoring <br />program on a quarterly basis and in May 1990, a technical revision was approved which <br />eliminated all groundwater monitoring at the site. In January 1992, the CMLRD approved <br />a reduction in surface water sampling to quarterly flow measurements and semiannual water <br />' quality at three surface stations. In early 1993, a decision was made to resume alluvial and <br />spoils aquifer monitoring. <br />' The following sections of this report describe the methods and results of this revised <br />program conducted at the Chimney Rock Mine site during 1992. Also contained in this <br />report is a comparison of the data collected over the 1985 through 1992 period and <br />' recommendations for future monitoring. <br /> <br /> <br /> <br /> <br />3 <br />