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1}ttttre Water Inflow As the mine extends farther to the east and then north as shown in Figure 2.1. I of the permit application, it is possible that water will be encountered . Figure 4.2- 3, of the permit apphcation, shows that the saturated strata may be encountered approximate]y 1,200 feet ahead of the existing mine faces. This location is near the eastern edge of Figure 3, Mine Map. If water is once again encountered, its existence will be documented and detailed in future reports. As shown on Figure 4.2-3 the saturated strata appear outcrop in the valley formed by the north split of Munger Canyon. Since the strata in the area dip at four percent to the northeast water may be inflltrating the seam along the valley bottom. Any water infiltrating the strata at this location will flow downdip until the aquifer is totally saturated unless there is an area where water may escape. The elevation of the saturated zone would approximate the elevation of the outcrop (5,600 ft) if no water flows out of the strata at a lower elevation. There are no known springs or seeps that would allow escape of the water from the zone of saturation so it can be expected that the coal seam will be saturated neaz the outcrop elevation. MUNGER CANYON MINE To date there has been no water encountered by this mine; therefore, there has been no effect on the hydrologic regime of the area. A current mine workings map is included as Figure 4. Table 1 documents that no water was used at the mine this year. PRECIPITATION • Based upon Bureau of Land Management records from a rain gage in Ashford Canyon, the 1996 water year experienced below average amounts of precipitation, 12.95 inches. The rain gage is not located at the mine but about 3.5 miles north at an elevation of 5895 feet compared with 5610 at the portals. The daily rainfall record is detailed on Table 2 and graphed on Figure 2. The year was the second driest year in the 20 years that precipitation has been monitored at the rain gage. The months of July thru December were especially dry and recieved only 3.5 inches of rain as compared with a normal of 9.2 inches for these months. Note that the months of October and November 1995 experienced record low precipitation and that only three months received above normal precipitation. EFFECT OF THE MINES ON THE EAST SALT CREEK REGIIVIE Surface Water Due to the limited disturbance of the mines there is little chance that any significant effect on the quantity or quality of the surface waters near either mine sites has occurred. As the Division notes in its approval package for the Munger Canyon Mme, the total area that will be disturbed by both mine sites amounts to 0.12 percent of the area of the East Salt Creek drainage basin above the mines. Surface water samples during the 1996 water year were collected each quarter from East Salt Creek (SW-1 and SW-8) as required by the monitoring program. The sample sites on McClane • Creek were dry the entire year. Munger Creek was flowing during fast quarter of 1996. The flow was from the North split of Munger Creek and does not include flow from the area of the mine site. Results of the quarterly sampling for each of the monitoring sites are shown in Table 4. AFII2 - 96 Page - 3 1 - I6 - 97