Laserfiche WebLink
,t ,` • • III II I III III <br />RIDER TO MINING PERMIT <br />Mine Name: West Elk Mine <br />Permit No.: C-80-007 <br />Permit Issue Date: July 31, 1996 <br />RECEIVED <br />MAY 21 1998 <br />.Division of Minerals 8 Geology <br />Proposed Decision Date: April 23, 1998 <br />The following additional stipulation(s) form an integral part of the permit: <br />Stipulation No. <br />Description <br />3. THE OPERATOR SHALL, UPON CLOSURE, INSTALL WATER-TIGHT SEALS WITHIN <br />THE MINE TO PREVENT GRAVITY DISCHARGE. THIS REQUIREMENT MAY BE <br />WAIVED UPON THE DIVISION'S APPROVAL OF A PLAN SUBMITTED BY THE <br />OPERATOR. TH[S PLAN SHALI. INCLUDE A DEMONSTRATION THAT THE WATER <br />QUALITY OF THE DISCHARGE FROM THE MINE WORKINGS WILL BE OF <br />ACCEPTABLE QUALITY AND WILL REMAIN ACCEPTABLE AFTER MINE CLOSURE. <br />THIS SHALL INCLUDE CHEMICAL ANALYSIS AND A PREDICTIVE MOUEL THAT <br />USES OXIDATION AND REDUCTION POTENTIAL TO DETERMINE LONG-TERM <br />WATER QUALITY OF MINE WATERS. ALSO, THE PLAN SHALL INCLUDE THE <br />CONSTRUCTION OF A SUITABLE CHANNEL FOR THE MINE DISCHARGE. <br />7. THE DIVISION DIRECTS MOUNTAIN COAL COMPANY, PRIOR TO ANY <br />DISTURBANCE AT THE UPPER WASTE SITE TO INSTALL SEVERAL ELECTRONIC <br />TILT METER TUBES DOWNSLOPE FROM THE TOE OF THE PROPOSED WASTE <br />STRUCTURE. THESE TILT METER INSTALLATIONS SHALL BE INSTALLED AS <br />SPECIFIED IN MCC'S AUGUST 15, 1985 SUBMITTAL. ONE INDICATOR SHALL BE <br />INSTALLED WITHIN 16O FEET OF THE TOE OF THE WASTE PILE CURRENTLY HALF <br />WAY BETWEEN MONUMENTS 51 AND 54. THE SECOND SHALL 8E LISTED <br />APPROPRIATELY 100 FEET NORTHEAST OF MONUMENT S2, 160 FEET NORTH OF <br />TOES OF THE WASTE PILE, AS INDICATED ON DRAWING NO. MG-R C-001, <br />INCLUDED IN THE PERMIT REVISION NO. 6 APPLICATION. DURING THE <br />INSTALLATION OF THESE TILT METER TUBES, THE OPERATOR SHALL AUGER AND <br />LOG THE SURFICIAL AND BEDROCK STRATIGRAPHY ENCOUNTERED. AUGERING <br />SHALL CONTINUE UNTIL THE OPERATOR HAS ESTABLISHED INTACT BEDROCK <br />OCCURRENCE. IF ANY EVIDENCE OF EXISTING LANDSLIDE DEPOSITS IS <br />ENCOUNTERED, THE OPERATOR SHALL DEFINE THE NATURE AND EXTENT OF <br />