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<br />backfilled and regraded in accordance with the approved reclamation plan, with the exception of a <br />gullied area at the north end of North Pit and on the North Pit Haul Road. The Division's <br />inspections conducted since the bond release inspection have found these gullied areas to be <br />adequately repaired. <br />Drainage control. Pond 1 receives runoff from the north half of the North Pit reclaimed slope, the <br />east half of the PRSA, the South Pit Drill Pad, and the Equipment Yard. Runoff from the west half <br />of the PRSA reports to Pond 2. Runoff from the south half of the North Pit passes through a grassed <br />terrace stilling area at the base of the reclaimed slope and then flows to the newly constructed Carbon <br />Junction channel via either of two routes: Carbon Junction Canyon at the base of North pit and the <br />ditch next to the North Pit Haul Road. Positive drainage appeared to exist throughout the drainage <br />route from backfilled areas to the ponds. Drainage control in the backfilled areas appeared to have <br />been completed in accordance with the approved reclamation plan. <br />Completion of evaluation required by Section 3.03.2(2). The Division has conducted an evaluation <br />of the reclamation work, in accordance with Section 3.03.2(2). This evaluation considered, among <br />other things, the results of inspections and monitoring, the need for further reclamation work, <br />whether pollution of surface or subsurface water is occurring, and the probability of future <br />occurrence of such pollution. The results of the evaluation of hydrologic impacts are summarized <br />below. The evaluation concluded that all Phase I reclamation has been completed in the bond release <br />area, no water pollution is occurring, and there is no potential for future water pollution. Impacts to <br />ground water and surface water are described below. <br />Ground Water Impacts: <br />The Division conducted a detailed analysis of potential ground water impacts at the Carbon <br />Junction Mine in a review of the 2003 annual hydrology report which has the most current <br />ground water monitoring data. The results of the analysis are described in a memo to the <br />annual hydrology report file dated June 11, 2004. <br />Should ground water degradation occur, the following two aquifers are the most likely <br />to be degraded by mining at Carbon Junction: the Animas River alluvium (one-half mile <br />downslope from the mine) and the Pictured Cliffs Sandstone (which subcrops beneath <br />the mine pits). <br />Alluvial aquifers: Animas River alluvial water can be expected to have not been <br />degraded by mining because the volume of spoil at the mine (less than 50 acres of <br />surface area) would not generate enough leachate to overcome the dilutional effect of <br />native alluvial ground water. <br />Bedrock aquifers: Prior to suspending its monitoring, downgradient monitoring we1195-1 <br />was monitored for coal spoil leachate. This well is located within the expected flowpath of <br />any leachate that would be generated in the Carbon Junction backfilled pits. This well has <br />not shown evidence of leachate. Absence of leachate indicates the operation is in compliance <br />with the Basic Standards for Ground Water (Colorado Water Quality Control Regulation <br />5 <br />