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_lg_ <br />Sudduth Draw is an intermittent stream with a total drainage area of 3.6 <br />square miles (2,304 acres). The N1arr Strip is located 1.1 miles upstream of <br />the confluence of Sudduth Uraw with the Canadian River. There are 3 stock <br />ponds located along this stream's course, 2 within the life-of-mine area and 1 <br />above the life-of-mine area of the Marr Strip. <br />bush Draw is an intermittent stream with a total drainage area of 4.8 square <br />miles (3,072 acres). The Marr Strip is located 2.1 miles upstream of the <br />confluence of Bush Draw with the Canadian River. There are no stock ponds <br />located along this stream's course. <br />Bolton Draw is an intermittent stream with a total drainage area of 6.8 square <br />miles (4,352 acres). The Spear Ditch diverts water from the Michigan River <br />into Bolton Draw from May through July. Both the Marr Strip and Canadian <br />Strip are located in the headwaters of this stream; the 1~1arr Strip is located <br />1.8 miles, and the Canadian Strip is located 2.1 miles upstream of the <br />confluence of Bolton Draw with the Canadian River. <br />Ground Water <br />Five aquifer systems havs been identified in the general area; the Upper <br />Sandstone member of the Pierre Shale, the Sudduth coal seam, the perched <br />lenticular sandstones of the Coalmont Formation, the Upland Terrace deposits, <br />and the alluvium of the Canadian River and its tributaries. <br />The Upper Sandstone member of the Pierre Shale can be considered a regional <br />aquifer, since it is continuous and can transmit limited quantities of water. <br />Pump tests conducted by Kerr Coal on this unit yielded a permeability of 0.15 <br />gpd /f t2, thus indicating that the Upper Sandstone member of the Pierre Shale <br />is a poor aquifer. Low permeabilities were obtained by Wyoming Fuel in two <br />slug tests run at sites 1C and 5A on the siltstone underburden separating the <br />Sudduth coal seam from the Up er Sandstone member. Testing indicated <br />permeaoilities of O.U9 gpd /ft~ and U.UI gpd/ft2, respectively. Kerr Coal <br />Company, in their pumping test, obtained no drawdowns in the Sudduth coal seam <br />while pumping the Upper Sandstone member well located 20 feet away. The <br />results of the two separate sets of aquifer analyses indicate that the <br />siltstone underburden acts as an aquiclude, preventing dewatering of the <br />sandstone member into mine pits. <br />Faults which cut through the mine pits may, however, transmit small quantities <br />of water from the Upper Sandstone member to the mine pits. This has occurred <br />in Wyoming Fuel's Pit 1, and is expected to occur in Pit 2. Wyoming Fuel has <br />estimated inflows in Pit 2 to be between 0 and 10 gpm. <br />No wells have been completed into the Upper Shale member of the Pierre Shale <br />to date due to its salinity and the low yields. No seeps or springs eminate <br />from the Pierre Shale within the general area. <br />Ground water occurs in both the Sudduth coal seam and the lenticular <br />sandstones of the Coalmont Formation. Wyoming Fuel has conducted two aquifer <br />tests (slug tests) on two different monitoring wells, lA and 5C, completed in <br />the Sudduth coal seam. The aquifer test conducted by and for Wyoming Fuel <br />