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bearing zones. Mining in both the Roadside North and South Portals frequently <br />• encounters coal saturated with water (above and below the level of the river) with <br />no continued flow subsequent to mining. Occasionally, zones of poor roof and <br />floor conditions are encountered accompanied by continuous inflows of water. <br />Water in these fracture zones would have the effect of saturating the adjacent <br />coal and sandstone, but due to the low transmissivity of the coal and sandstone, <br />a sustained flow is not maintained. The complex nature of the fracture zones <br />would make identification of a source difficult. The Graystone report generally <br />found low transmissivity in the Rollins Sandstone but found one hole, the Unit <br />Train Loadout well had a high transmissivity. The degree of fracturing within the <br />Unit Train Loadout was not determined during drilling but its proximity to the river <br />and its sub-crop could indicate a high degree of fracturing. This scenario would <br />correspond well with the Collins conclusion. <br />(ii) The lithology and thickness of the strata is described in Section 2.04.7(1)(a)(i), <br />• and in greater detail in the geology description in 2.04.6, Tab Section 6. <br />(iii) The quality of groundwater in the permit area has been monitored in various <br />ways. Wells are generally used for alluvial monitoring. Groundwater monitoring <br />in the coal seam and adjacent formations is one through mine discharge <br />monitoring and mine inflows studies. Table 7-1 contains quality information from <br />mine discharge in 1980. This monitoring has revealed that total dissolved solids <br />are too high for most beneficial uses. Wells for monitoring groundwater in the <br />coal and the formations above the Cameo B seam have not been developed. <br />Four wells were developed in 1997 into the Rollins Sandstone for quality and <br />quantity information. Evaluation of information from mine discharge in an indirect <br />indicator of quality and quantity of groundwater in the Cameo B seam. <br />Information submitted in past annual hydrologic reports shows little seasonal <br />. 7-4 (Rev. 9/17197) <br />