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\J l.0 Hydralogit Monitoring A[fivifits Fork (USGS/MCC Gaging Station, Minnesota Creek) and the North Fork of the Gunnison (North Fork Upper, USGS North Fork Gage near Somerset) North Fork sta- tion (approximately '/a-mile upstream of the mine site). These USGS gauging stations are heated, and are unaffected by freezing temperatures. Average daily flow measurements (including mean, maximum, and minimum flows) for the five MCC gauges are summarized in Appendix C. River, stream and pond water quality monitoring data are presented in Appendix D. 1.3 SPRINGS WATER MONITORING The springs monitoring program is described in Table 1.3-1. The locations of the springs are shown on Exhibit 2 (Map 37, Spring and Stock Pond Location Map, 5/31/95). All known springs in the permit area are shown on Map 34 in Volume 5 of the M and R Plan. Spring water quality monitoring data is presented in Appendix E. Bar graphs depicting spring flows from 1979 to the present are at Appendix F. MCC informally monitors USFS water resources. Table 1.3-2 summarizes these resources. No changes in the USFS Water Resources Map are necessary because no new rights were filed for or new uses made during the WY in the permit area. Two USFS water resources (131 and 1.39) overlie the current permit area. 1.4 GROUNDWATER MONITORING The groundwater monitoring program is outlined in Table 1.4-1 Groundwater A}Qt-95.210/OS/IS/96(I ~38pm) 5 Monitoring Program at the West Elk Mine. Well locations are shown on Exhibit 1 (Map 34). Well completion data is found on Table 1.4-2. Facility area alluvial wells (GP-1, 3, 4, and 5) were established to monitor the impact of the lower refuse pile on alluvial groundwater. Monitoring wells B-32, SOM-13-H, SOM-38-H-1, SOM-80- H, SW-1, SW-2, SW-3, SW-4, SW-5, and SW-6 were established to monitor for hydrologic impacts to the Barren Member above the "F" seam of coal from mining activities. Monitoring wells SOM-2-H and SOM-16-H were established to monitor for hydrologic impacts within the "F" coal seam from mining activities. Monitoring well SOM-23-H-2 was established to monitor for hydrologic impacts to the "E" coal seam. Monitoring wells SOM-C-72-H, SOM-129- H, and JMB-12 were established to monitor for hydrologic impacts within the "B" seam of coal. Wells SOM-128-H and LP-1 were established to monitor for hydrologic impacts to the Rollins Sandstone, located just below the "B" seam of coal. Well water monitoring data is presented in Appendix G. Minimum and maximum values for the baseline monitoring period are incorporated into tables in Appendix G. Hydrographs depicting water levels from 1978 to the present have been included as Appendix H. 1.5 OPERATIONS MONITORING 1.5.1 North Fork Water During WY 1982, a portion of the conditional right to withdraw water from the North Fork was deemed absolute. When this water right is in priority (typically when the river flows greater than 300 cubic feet