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. Water in the Rollins Sandstone is confined to limited localized zones that are fractured and/or <br />contained above tlhe Rollins, as evidenced by water level measurements that are well above the <br />top of the sandstone member. Water quality is poor, with high total dissolved solids as sodium <br />chloride. Inflow ~~nd recovery of the water level in the drill holes indicates very low <br />permeability and ]porosity of the sandstone. There has been some variability in the water levels <br />measured in well SC-1 but there has been no apparent trend or indication of impact. No <br />significant difference in the 2007 monitoring results from baseline or historical measurements <br />was noted in well SC-l. <br />The limited water quantity and poor water quality suggests there is limited transmissivity <br />between the Nort'.h Fork of the Gunnison River alluvium through the Rollins sandstone down- <br />gradient towards the area associated with the Sanborn Creek Mine. <br />SC-3 Well - B-Seam Coal -Sanborn Creek Mine <br />Monitor well SC••3 is located east of the Sanborn Creek reclaimed mine portal area along the <br />entrance to the pi•e-existing ranch road to Coal Gulch. <br />Monitoring well SC-3 was completed into the B Seam coal. Monitoring data were collected <br />from well SC-3 prior to any substantial mining in the B-Seam of the Sanborn Creek Mine. The <br />SC-3 well is up-gradient relative to the B seam underground mining activities but down-gradient <br />from the North Fork of the Gunnison River <br />• The plastic pipe casing is squeezed at the 20 foot level making it difficult to lower a bailer. <br />Using a smaller diameter bailer we have found very minimal water available in the well. In fact <br />there are times when the initial bailing of the well to remove one volume effectively drains the <br />available water. 'The lack of water in the well and the poor water quality suggests there is little <br />transmissivity acid connection between the North Fork of the Gunnison River and the B seam <br />coal at this particular vicinity of the mine. <br />As the of SC-1 and SC-3 wells serve to monitor only the Rollins sandstone and B-seam coal <br />respectively up~~~adient of the Sanborn creek mining area, their utility towards the monitoring <br />of the Sanborn creek mine itself remains somewhat limited. <br />• <br />15 <br />