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' 2.04.7 (1) (a) (i) (ii) <br />' Member and the "F" coal seam are poor aquifers. In fact, one well <br />SOt? C35 was completed into the "F" coal seam and found to be dry. <br />A pump test was conducted in the alluvial material of the North <br />Fork of the Gunnison River that yielded 17.5 gpm, and a pump <br />' test was completed in the alluvial material of Sylvester Gulch <br />which would only yield 0.5 gpm. PIO mining will occur under <br />Sylvester Gulch or the North Fork of the Gunnison River. <br />' D]onitoring of the groundwater levels at eleven observation wells <br />' has been conducted. tbnthly visits to the sites, by ARCO, were mzide to <br />record the static water level in each of the wells. The water <br />level variation with time for each of the wells is shown iri <br />' Tables 2.04.7(1)(a)(ii)-1 through 2.04.7(1)(a)(ii)-11. <br />' Wells completed into the Barren t4ember above the "F" seam c;oal <br />are completed and open to many different sands. Using this; data <br />and the elevations of known springs, a composite water level map <br />was prepared for the Barren !•?ember. Refer to the ~'nmposite Water <br />' Level flap, 2.04.7(1) (a) (ii)-la, topography and the discontinuous <br />nature of the sands and perched aquifers, the map shows that <br />' water levels in the Barren P?ember correlate closely with changes <br />in topography. <br />' The above information was obtained from the ARCO Permit Application. <br />' Well designations and water levels are given in '."able <br />2.04.7(1)(a)(ii)-1 through 11. <br /> <br />1 <br />' REVISED May 15, 1981 46b <br />