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aquifer characteristics and/or water quality analyses have been performed in the Wolf Creek underburden, Wolf Creek coal, Wolf Creek overburden, Sage Creek coal, Sage Creek overburden, Wolf Creek/Wadge Interburden, Wadge coal, Wadge coal overburden, and the Hubberson Gulch alluvium. Quantity and quality data have also been collected from ten springs and seeps in and adjacent to the permit area, and three spoil springs that have developed on reclaimed areas. The current monitoring plan requires monitoring of water quality and/or water levels at specified intervals at 21 bedrock wells, 10 alluvial wells, 5 natural springs and seeps and 4 spoil springs. Each year following snowmelt, any additional spoil springs with discharge of at least 5 gpm are documented ,monitored in spring and fall, and reported in the Annual Hydrologic Report for the year. Each of the identified aquifer zones are hydraulically discontinuous with the units above and below. Therefore, each aquifer will be discussed as a separate entity. Wolf Creek Seam The lowest coal in the Williams Fork Formation of the Mesaverde Group is the Wolf Creek seam. Depth to water and water quality measurements have been made at three sites in and adjacent to the original permit area. Water levels in the Wolf Creek at all three sites exhibit confined conditions. Dependent upon proximity to the outcrop recharge area (paralleling the Sage Creek anticlinal axis), and local structure, each well has varying amounts of head. Ground water flows from the recharge area to the center of the basin. Therefore, the major component of flow appears to be toward the west. Aquifer tests were performed on the two updip wells during the summer of 1980. These tests indicate that the Wolf Creek is a fairly well confined aquifer which transmits limited amounts of water. One well was pumped at an average of 1.2 gallons per minute for about 3 1/2 hours, and produced no observable drawdown at an observation well 20 feet away. Transmissivity values calculated for the Wolf Creek range From 0.02 ftZ per day (0.149 gallons per day per foot) for well 3WC, to 0.001 ft2 per day (0.007 gallons per day per foot) in the two wells tested. Due to the low water yield and transmissivity values, the storativity value of the Wolf Creek seam is estimated to be about 1 X 10-5. These values, both transmissivity and storativity, would appear to be quite low. Aquifer test data, however, does substantiate these values. Due to the highly lenticular and discontinuous nature of the Mesaverde Group, it is thought that transmissivity and storativity will be aerially variable. Seneca II-W Findings Document 33 June 12, 2006 Permit Renewal No. 5