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The second water-bearing stratum is the Cameo B seam. As with the other • Mesa Verde Formation, the seam pitches approximately 5% to the northeast and reaches a depth of 600 feet below the river. The coal seam receives and transmits water from the river where the seam dips below the 4750 ft. elevation, according to the Willard Owens report. A subsurface structural contour map which depicts the outcrop and the horizontal extent of the seam within the permit area is provided in Exhibit 15, Tab Section 6. The 4750 ft. contour and the estimated subcrop of the Cameo B seam is shown on Exhibit 17. The fact that water is present in the coal seam at elevations higher than the river indicates recharge from additional sources such as precipitation, strata or geologic structure. This is similar to the hydrologic characteristics of the Rollins Sandstone in the Graystone report in Appendix 7-3. The Rollins Sandstone formation, the thickest and most continuous sandstone in the project area, is the third unit which contains groundwater. This unit is • typically 85-95 feet thick in the permit area. As can be seen in Exhibits 13 and 39, Tab Section 6, the Rollins Sandstone underlies the entire permit area except within DeBeque Canyon where it outcrops. The ,raystone report in Appendix 7- 3was prepared to identify the hydrologic charac . istics of this unit and its potential as an aquifer. Mining activities at the Roadside South Portal have encountered higher inflows above the river level than the Willard Owens report would indicate. In an effort to further evaluate the hydrologic properties of the coal seam and the Rollins Sandstone, Appendix 7-2 was prepared. Collins wrote this report using literature searches and personal experience with the local geology. The general low transmissivity of each of the Mesa Verde units along with localized higher transmissivity at fractured zones appears to typify these three groundwater