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RIDER TO MINING PERMIT <br />Permit Date: November 16, 1986 <br />Permit No: C-80-001 <br />The following additional stipulations and conditions form an integral part of <br />the foregoing permit: <br />Stipulation No. 1 <br />THE PERMITTEE MUST SUBMIT TO MLRD THE DESIGNS FOR THE MOFFAT AREA <br />SEDIMENT PONDS AT LEAST SIX MONTHS PRIOR TO CONSTRUCTION, AND RECEIVE <br />APPROVAL FOR THE PROPOSED DESIGN BEFORE COMMENCING CONSTRUCTION OF THE <br />PONDS OR MINING IN THE MOFFAT AREA. THESE DESIGNS WILL REFLECT CURRENT <br />REGULATORY DESIGN CRITERIA AND APPROVAL WILL BE CONTINGENT ON <br />INFORMATION DEMONSTRATING THAT THE PONDS OUTFLOW WILL MEET EFFLUENT <br />LIMITATIONS. <br />Stipulation No. lc <br />THE APPLICANT SHALL SUBMIT DESIGN DATA FOR EACH OF THE MOFFAT AREA <br />SEDIMENTATION POND INFLOW DITCHES. THIS INFORMATION SHALL INCLUDE <br />EVIDENCE THAT DITCH SLOPES WILL PROVIDE POSITIVE DRAINAGE TO THE PONDS <br />WITH ACCEPTABLE VELOCITIES. THE INFORMATION SHOULD ALSO DEMONSTRATE <br />THAT BERMS TO BE CONSTRUCTED WILL NOT SIGNIFICANTLY IMPOUND WATER. <br />Stipulation No. 3 <br />PRIOR TO MINING IN THE MOFFAT AREA, THE APPLICANT SHALL DEMONSTRATE, <br />BASED UPON ON-THE-GROUND PERFORMANCE, THAT THE CONVEX LOWER SLOPES DO <br />NOT CAUSE EXCESSIVE RILLING AND GULLYING OR THAT RILLING AND GULLYING <br />ON THESE SLOPES CAN BE CONTROLLED. IF THE APPLICANT'S EFFORTS TO <br />CONTROL RILLING AND GULLYING IN THE AREAS RECLAIMED PROVE UNSUCCESSFUL, <br />THE APPLICANT WILL REDESIGN THE POST-MINING TOPOGRAPHY TO ELIMINATE THE <br />CONVEXITY FROM THE LOWER PORTIONS OF THE SLOPE. <br />ACCEPTED AND AGREED: MINED LAND RECLAMATION DIVISION <br />COLORADO DEPARTMENT OF <br />NATURAL RESOURCES <br />By //.f ~ ~cG.~I REJiD EnI i <br />Operator' „ , / Tit e <br />on <br />AG Alpha No. NR LR TYB <br />AG File No. PNR/3928/JD <br />6187G/6305G <br />