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-4- <br />Stipulation No. 7 <br />THE DIVISION DIRECTS PUEBLO COAL, INC. TO CONFORM WITH THE <br />FOLLOWING CONDITIONS WHEN PLACING COAL PROCESSING WASTE WITHIN THE <br />BACKFILLED SPOIL OF THE SURFACE PIT AT THE CARBON JUNCTION MINE: <br />1. THE PLACEMENT OF COAL PROCESSING WASTE IS TO BE RESTRICTED TO <br />PREPARED SURFACES WHICH ARE TO BE LEVEL OR DIPPING SLIGHTLY <br />TOWARD THE HIGHWALL OF THE PIT. THESE SURFACES SHALL BE <br />ROUGHENED BY SCARIFYING IN A DIRECTION PARALLEL TO THE STRIKE <br />OF THE FINAL RECLAIMED TOPOGRAPHIC SURFACE OF THE MINED PIT <br />AREA. <br />2. COAL PROCESSING WASTE SHALL BE PLACED IN HORIZONTAL LIFTS NOT <br />TO EXCEED 1 FOOT IN THICKNESS AND COMPACTED TO 901 OF THEIR <br />RELATIVE MAXIMUM DENSITY, AS DETERMINED USING A.S.T.M. <br />STANDARD TEST DESIGNATION D698. <br />3. COAL PROCESSING WASTE SHALL BE DISSEMINATED WITHIN THE PIT <br />BACKFILL. <br />4. BODIES OF COAL PROCESSING WASTE SHALL BE ELONGATED WITH THEIR <br />LONG AXIS PARALLEL TO THE STRIKE OF THE FINAL RECLAIMED <br />TOPOGRAPHIC SLOPE OF THE BACKFILLED PIT. <br />5. BODIES OF COAL PROCESSING WASTE SHALL NOT EXCEED 100 SQUARE <br />FEET IN CROSS-SECTIONAL AREA, AS MEASURED ON CROSS-SECTIONS <br />PERPENDICULAR TO THE STRIKE OF THE FINAL RECLAIMED <br />TOPOGRAPHIC SURFACE OF THE MINED PIT AREA. <br />COAL PROCESSING WASTE SHALL NOT BE DEPOSITED WITHIN 20 FEET <br />VERTICALLY FROM THE FINAL RECLAIMED SURFACE WITHIN THE MINED <br />AREA. <br />COAL PROCESSING WASTE SHALL NOT BE DEPOSITED WITHIN 100 FEET <br />HORIZONTALLY FROM THE FINAL RECONSTRUCTED STREAM CHANNEL <br />WITHIN CARBON JUNCTION CANYON. <br />Stipulation No. 8 <br />THE DIVISION DIRECTS PUEBLO COAL, INC. TO REDESIGN THEIR COAL <br />PROCESSING WASTE PLACEMENT PLAN PRESENTED WITHIN THE MAY 4, 1983 <br />SUPPLEMENTAL SUBMITTAL TO THEIR PERMIT APPLICATION FOR THE CARBON <br />JUNCTION SURFACE COAL MINE. SPECIFICALLY, PUEBLO COAL, INC. SHALL <br />REDESIGN THE PROPOSED IMPERMEABLE PIT BARRIER LAYER, DEPICTED <br />WITHIN FIGURE A-3 OF THAT SUPPLEMENTAL SUBMITTAL. THE DESIGN <br />CONFIGURATION OF THAT IMPERMEABLE BARRIER SHALL BE AMENDED TO <br />PROVIDE, AT A MINIMUM, A 100 FOOT HORIZONTAL TOE BUTTRESS AT THE <br />DOWNSLOPE EXTREMITY OF THE BACKFILLED PIT. NO COMPACTED kIGH CLAY <br />CONTENT BARRIER NOR COAL PROCESSING WASTE SHALL BE PLACED WITHIN <br />