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• Specifically, monitor well nos. 08-77-42, OS-77-43 and 08-77-58, <br /> shown on Map 4, Mine No. 3 Hydrology, display sufficient artesian <br /> head to floe at the surface. <br />Groundwater also occurs in unconfined alluvial aquifers in the <br />proposed permit area. The alluvium deposited by Foidel, Middle and <br />Fish Creeks contains water in isolated pockets of sand and gravel <br />beneath the streambed. Thin ground eater is derived from underlying <br />bedrock aquifers, irrigation return floe and surface runoff which <br />infiltrates into the alluvium. Several shallow wells have been <br />installed in the unconfined alluvial aquifers within the proposed <br />persist and adjacent area. Depth of the alluvium is generally less <br />than 20 feet, and depth to the water table is less than 10 feet, as <br />• shown in Table 26, Ground Water Monitoring Data. The eateat of the <br />unconsolidated streamlaid deposits in the proposed permit and <br />adjacent area is shown on Map 4, Mine No. 3 Hydrology. <br />Aquifer Lithology and Thickness <br />The confined aquifer disturbed by mining operations at Mine <br />No. 3 consisted of the Wadge coal seam and as much as 120 feet of <br />shale, eiltatone, and sandstone overburden. The overburden <br />lithology is described in detail under Rule 2.04.6, and is <br />graphically displayed in Figure 2, General Stratigraphic Column. As <br />shown in the figure, the Wadge coal vas overlain by about 73 feet of <br />siltstone, the Lennon coal seam and a fine-grained sandstone bed. <br />• From field observations during the drilling of exploration holes and <br />monitor wells, the strata just above the Wadge Seam are the most <br />2.04-38 <br />