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Pursuant to Rule 4.03.1(3)(c)(i) and in response to Division comment, the applicant completed a mathematical stability analysis, based upon appropriate material strength data, to determine the static slope safety factor of the designed cuts, The analysis considered worst-case situations characteristic of the materials and cut slope configurations proposed within the plan. Alternatively, the applicant chose to demonstrate, through appropriate geo-technical analysis, that a safety factor of less than 1.5 would not result in significant environmental harm or harm to the public health and safety. The supplemental stability analysis of the haul road cut slopes considered the relative stability of the various cut slopes prior to disturbance, in their present pioneer road configuration, as reconstructed, and as reclaimed. In response to preliminary results of this analysis, the application made several design and reclaimed configuration amendments. In all cases, the amended designs achieve final reclaimed configurations which achieve static slope safety factors in excess of the original undisturbed slopes. Due to this improvement in construction, the haul road will not result in significant environmental harm or harm to the public health and safety. However, because the static slope safety factor of the affected areas are below that normally desired for road cut slopes, the Division imposed the following stipulation upon the permit during Permit Revision No. 1 approval: Stipulation No. 15 THE DIVISION DIRECTS SALT CREEK MINING COMPANY TO INSTALL SIGNS AT THE PERMIT BOUNDARY AND AT STATION 67+00' ADJOINING THE HAUL ROAD. THESE SIGNS, LEGIBLE FORM THE HAUL ROAD WHILE PROCEEDING TOWARD THE PORTAL BENCH, SHALL READ: "ROAD SLOPES SUBJECT TO ROCKFALL AND SLOPE FAILURE - PROCEED WITH CARE." Salt Creek Mining Company's Permit Revision Application No. 1 proposed the construction of two new access haul roads. The first will allow the transportation of coal and processing wastes from the McClave Canyon workings, along East Salt Creek, to the new central processing facility located within the Munger Canyon Mine's permit area. The second roadway is proposed by the applicant to allow the haulage of coal processing waste from the new central processing facility, southward along East Sait Creek, to a new proposed refuse disposal area. The applicant also proposed the construction of roughly two miles of overland conveyor for the purpose of transporting product coal from the Munger Canyon Mine Portal to the new central processing facility. This conveyor roughly parallels that of the approved access haul road to the Munger Canyon Mine Portal Bench. As was the case of the approved Munger Canyon Mine portal road, each of these three transportation routes requires the creation of some relatively large cuts and fill embankments, As was also the case in earlier review situation, the proposed fi_ils conform to the maximum allowable grade limitation contained within the regulations and are, there ore, accep able. However, as was also the case in that earlier application, several_of the cuts exceed normal limitations or are so ~~ - - -17-