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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 />• SOt4 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 P,iver 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 />Monitoring of the groundwater levels at eleven observation wells <br />has been conducted. Pbnthly visits to the sites, by ARCO, were made 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 in <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 coal <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 Member. Refer to the ArarQosite Water <br />Level Map, 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 Member correlate closely with changes <br />in topography. <br />"'he above information was obtaine3 from the ARCO Permit Application. <br />Well designations and water levels are given in Table <br />2.04.7(1)(a)(ii)-1 through 11. <br />• <br />5-12 <br />RF\7T CFf1 Mai, 7 C l Q S71 <br />