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RIDER TO MINING PERMIT <br />Permit Date: Apri12, 2007 <br />Permit No: C-1980-007 <br />The following additional stipulations form an integral part of the foregoing permit: <br />Stipulation No. <br />Description <br />3. THE OPERATOR SHALL, UPON CLOSURE, INSTALL WATER- <br />TIGHT SEALS WITHIN THE MINE TO PREVENT GRAVITIY <br />DISCHARGE. THIS REQUIREMENT MAY BE WAIVED UPON <br />THE DIVISION"S APPROVAL OF A PLAN SUBMITTED BY <br />THE OPERATOR. THIS PLAN SHALL INCLUDE A <br />DEMONSTRATION THAT THE WATER QUALITY OF THE <br />DISCHARGE FROM THE MINE WORKINGS WILL BE OF <br />ACCEPTABLE QUALITY AND WILL REMAIN ACCEPTABLE <br />AFTER MINE CLOSURE. THIS SHALL INCLUDE CHEMICAL <br />ANALYSIS AND A PREDICTIVE MODEL THAT USES <br />OXIDATION AND REDUCTION POTENTIAL TO DETERMINE <br />LONG-TERM WATER QUALITY OF MINE WATERS. ALSO, <br />THE PLAN SHALL INCLUDE THE CONSTRUCTION OF A <br />SUITABLE CHANNEL FOR THE MINE DISCHARGE. <br />7. THE DIVISION DIRECTS MOUNTAIN COAL COMPANY, <br />PRIOR TO ANY DISTURBANCE AT THE UPPER WASTE SITE <br />TO INSTALL SEVERAL ELECTRONIC TILT METER TUBES <br />DOWNSLOPE FROM THE TOE OF THE PROPOSED WASTE <br />STRUCTURE. THESE TILT METER INSTALLATIONS SHALL <br />BE INSTALLED AS SPECIFIED IN MCC"S AUGUST 15, 1995 <br />SUBMITTAL. ONE INDICATOR SHALL BE INSTALLED <br />WITHIN 160 FEET OF THE TOE OF THE WASTE PILE <br />CURRENTLY HALF WAY BETWEEN MONUMENTS 51 AND <br />54. THE SECOND SHALL BE LISTED APPROPRIATELY 100 <br />FEET NORTHEAST OF MONUMENT S2, 160 FEET NORTH OF <br />TOES OF THE WASTE PILE, AS INDICATED ON DRAWING <br />NO. MG-R C-001, INCLUDED IN THE PERMIT REVISION NO. 6 <br />APPLICATION. DURING THE INSTALLATIONS OF THESE <br />TILT METER TUBES, THE OPERATOR SHALL AUGER AND <br />LOG THE SUPERFICIAL AND BEDROCK STRATIGRAPHY <br />ENCOUNTERED. AUGERING SHALL CONTINUE UNTIL THE <br />OPERATOR HAS ESTABLISHED INTACT BEDROCK <br />