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zone tested in the -aboratory. This sample consisted of hard, poorly sorted, clayey, very fine grained sandstone. The porosity of this sandstone averaged 14 percent and had essentially no permeability. This sample represents a relatively small part of the massive Pictured Cliffs Sandstone and may not be representative of its entire cross-section. No drill holes penetrate the entire section of the Pictured Cliffs Sandstone. Regionally, the Picttved Cliffs Sandstone in outcrop is a massive, hard, well sorted, clean, fine to medium grained sandstone (Fassett and Hinds, 1971, and Shomaker, et. al., 1971). This massive section of Pictured Cliffs Sandstone is permeable and could support ground water flows. The interbedded and lenticular strata of the Lower Fruitland Formation support local discontinuous aquifer systems. Water bearing zones were observed at the base of the Lewis ("C) coal zone, 1.3 feet thick; above the Shamrock ("A") coal zone, 96 feet thick: and above the Shattuck rider coal zone, 17 feet thick. Two monitoring wells, 17-B and 82-5, are completed in the first two water beazing zones respectively. The water bearing zone associated with the Shamrock coal overburden was air-lift bailed at about 50 gpm with no measureable drawdown. This indicates that the Shamrock coal overburden may produce significant inflows to the pit. Oakridge Energy, Inc. has applied for and received a well permit to drill and use water from the water-bearing zone associated with the Shamrock rider seam. This zone was encountered in borehole 84-2 (see Map 4-2). An estimated yield of 150 gpm was measured in an air lift during drilling. The rechazge azea is likely restricted to the outcrop and subcrop of this zone. At the Chimney Rock Mine, about 30 miles east of the Cazbon Junction Mine, pumping tests were run on the Lower Fruitland Formation. These pumping tests yielded a value for transmissivity (T) of 2 (0 gallons per day per foot and a value for storativity (S) of 1.3 x 10-0. These values indicate that the Lower Fruitland Formation will support limited ground water movement and use. There are presently no known users of ground water from this aquifer in the permit and adjacent areas. The Quaternary tettace deposits are at best limited aquifers. These deposits have a coazse gravel-boulder layer at their base which tends to drain the deposits to the side slopes of the Animas River Valley. The terrace deposits do not supply subirrigation to crops. These terrace deposits are currently used regionally for dry land wheat farming. The alluvium of the Animas River is a regional aquifer located 400 feet below the main mining operation. The alluvium is poorly sorted and coarse with ground water levels coincident with the river. The alluvial body thins and becomes narrow at the point where the Animas River cuts through [he Pictured Cliffs Sandstone and Fruitland Formation. Sarface Water Hydrology The Carbon Junction Mine is located within the Animas River Drainage Basin, specifically within the valley of the upper reach of Cazbon Junction Canyon. The stream which drains the site is intermittant and has a steep gradient and a deeply incised channel. Stream flow in Carbon Junction Canyon is directly tributary to the Animas River to the southwest. The drainage basin of Carbon Junction Canyon above the mine is 0.8 square miles.