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1 <br />A-1 Alluvial groundwater well located adjacent to Stollsteimer Creek below the surface <br />facilities and the Barren Ridge area. The site has been monitored to assess effects <br />' of mining the Barren Ridge area. This well is adjacent to surface water station S-2. <br />W-1 Alluvial groundwater well located adjacent to Stollsteimer Creek above the mine <br />' facilities. This station was selected to assess alluvial baseline conditions. <br />' W-5 Alluvial groundwater well located adjacent to Stollsteimer Creek below all mining <br />activities. The station was selected to assess potential effects of mining on the <br />alluvial water quality and level. <br />W-6 Deep groundwater well located in the mouth of Deep Creek Canyon. The station was <br />selected to monitor deep aquifer baseline in the Fruitland Formation during mining <br />of the Barren Ridge and Revision Area No. I. <br />W-7 Domestic well located in the alluvium of Stollsteimer Creek approximately 3/4 mile <br />above mining activities. The station was selected as a control io assess the effects <br />of mining on well water quality. <br />W-9 Deep groundwater well located in the Fruitland Formation below the sedimentation <br />ponds controlling runoff from Revision Area No. 1. The station was selected to <br />assess effects of mining activities on aquifer quality and level. <br />W-10 Deep groundwater well located in the Fruitland Formation above the sedimentation <br />ponds controlling the Revision Area No. 1. The objectives of this station are similar <br />to those of W-9. <br />W-16 Deep groundwater well located in the reclaimed area of the east pit near Highway <br />151. The site was selected to assess the quality and level of water in the reclaimed <br />aquifer. <br />W-17 Deep groundwater well located in the mouth of Deep Creek Canyon. The station was <br />selected to monitor water quality and level in the Fruitland and/or Pictured Cliffs <br />Sandstone Formations as pit development takes place in the Revision Area No. 2. <br />W-18 Deep groundwater well located in the mouth of Deep Creek Canyon. The station was <br />selected for objectives similar to those of W-17. <br />I' On January 30, 1986, the CMLRD approved a Technical Revision to reduce the hydrologic <br />monitoring program at the site. Stations associated with the Revision Area No. 2 in Deep Creek <br />(DC-I, W-17 and W-18) are not required to be monitored by the current program. The water <br />I' quality parameters of arsenic, cadmium, lead, mercury, molybdenum and selenium have also <br />been eliminated from all stations except well W-16 located in the reclaimed area of the east pit. <br />Water quality sampling of the Stollsteimer Creek alluvium was added to station A-1 and <br />2 <br />1 <br />