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Rechazge capacity is expected to increase. The potential infiltration rate will increase due <br />to the increased porosity of the backfilled overburden and soil in the pit area. Recharge is <br />expected to fill from the pit bottom above the Pictured Cliffs Sandstone aquitard to the <br />water-bearing zones which will accept the water and transmit it down dip and laterally to <br />the assumed sink, the Animas River. The water is moving primarily through fractures in <br />the coal along the 21 to 28 degree down dip. The grade, laterally, of the Pictured Cliffs <br />Sandstone is only about four degrees from the pit area to its outcrop neaz the confluence <br />of Carbon Junction Canyon and the Animas River. The outcrop sandstone and associated <br />channel bottom are dry which supports that hypothesis that the sink is occurring <br />downstream where the water-bearing zones intersect the Animas River. Thus, runoff will <br />decrease and ground water rechazge will increase. Once equilibrium is attained, no net <br />change in water quantity reaching the Animas River is expected. <br />Any coal processing waste will, to the extent possible, be placed above the water-bearing <br />zones in the pit; which will minimize the time water will be in direct contact with the <br />processing waste. Based upon ground water quality analyses, overburden analyses and <br />coal reject analyses; no increased adverse effects on long term ground water quality are <br />expected. Revegetation, as planned, will reduce long term sedimentation of the disturbed <br />area. No other adverse effects are expects!. <br />Oakridge conducted a spoils monitoring program as a part of the protection of the <br />hydrologic balance in the reclamation program. The spoils monitoring began with spring <br />runoff in 1998, and determined that no significant discharge occurred. A single <br />monitoring point was established at the base of the spoil at the lower end of the <br />underdrain. <br />2.05.6(41 Protection of Public Parks and Historic Places <br />There are no public parks or historic places near the mine site. <br />2.05.6(5) Surface Mining Near Undererouud Mining <br />There are no underground mining activities near this surface mine. <br />2.05.6(6) Subsidence Survev. Monitoring, and Control Plan <br />The requirements of this section do not apply, Carbon Junction is a surface mine. <br />• <br />Technical Revision 08 (v 1.4) 5-48 Revised 9!1997 <br />