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W-6 Deep ground water well located in the mouth of Deep Creek Canyon. The station was selected <br /> to monitor deep aquifer baseline in the Fruitland Formation during mining of the Barren Ridge <br /> and Revision Area No. 1. <br /> W-7 Domestic well located in the alluvium of Stolisteimer Creek approximately 3/4 mile above mining <br /> activities. The station was selected as a control to assess the effects of mining on well water <br /> quality. <br /> W-9 Deep ground water well located in the Fruitland Formation below the sedimentation ponds <br /> controlling runoff from Revision Area No. 1. The station was selected to assess effects of mining <br /> activities on aquifer quality and level. <br /> W-10 Deep ground water well located in the Fruitland Formation above the sedimentation ponds <br /> controlling the Revision Area No. 1. The objectives of this station are similar to those of W-9. <br />' W-16 Deep ground water well located in the reclaimed area of the east pit near Highway 151. The site <br /> was selected to assess the quality and level of water in the reclaimed aquifer. <br />' W-17 Deep ground water well located in the mouth of Deep Creek Canyon. The station was selected <br /> to monitor water quality and level in the Fruitland and/or Pictured Cliffs Sandstone Formations <br /> as pit development takes place in the Revision Area No. 2. <br /> 1 <br /> W-18 Deep ground water well located in the mouth of Deep Creek Canyon. The station was selected <br /> ' for objectives similar to those of W-17. <br /> On January 30, 1996, the CMLRD approved a Technical Revision to reduce the hydrologic monitoring <br /> ' program at the site. Stations associated with the Revision Area No.2 in Deep Creek(DC-1,W-17 and W-18) <br /> are not required to be monitored by the current program and will be resumed as development begins in that <br /> area. The water quality parameters of arsenic, cadmium, lead, mercury, molybdenum and selenium have also <br /> I been eliminated from all stations except well W-16located in the reclaimed area of the east pit. Water quality <br /> sampling of the Stollsteimer Creek alluvium was added to station A-1 and eliminated from station W-1. <br /> Frequency of sampling,depth-to-water measurements, and stream discharge measurements were not changed <br /> I by this revision. In June 1988, the CMLRD approved a technical revision to conduct this monitoring program <br /> on a quarterly basis. <br /> The following sections of this report describe the methods and results of this revised program conducted <br /> I at the Chimney Rock Mine site during 1989. Also contained in this report is a comparison of the data <br /> collected over the 1985 through 1989 period and recommendations for future monitoring. <br /> it <br />