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• • co-oolz Page 9 of 13 -5- addition to the inspection and reporting requirements of Rule 4.10.2, CWI shall submit records or calculations to verify the total accumulated quantity of coal processing waste disposed of at the existing site as a portion of its quarterly inspection report to be submitted to the Regulatory Authority. 22. The applicant must provide to the Regulatory Authority as part of Phase II of the stability analysis study being conducted under the direction of Mer- rick 6 Company, a demonstration that the existing haul and access road embank- ments have achieved a minimum safety factor of 1.25, and that the existing haul and access road cuts have achieved a minimum safety factor of 1.50 or that a lesser safety factor will not result in significant environmental harm or harm to the public health and safety, or provide a plan to upgrade the roads to a safety factor acceptable to the Regulatory Authority. This demon- stration shall be completed and a report su®sarizing the results and method- ology thereof submitted to the Regulatory Authority for review by December 31, 1981. 23. Within 30 days after [he completion of Phase III of the stability analysis and redesign of the final reclaimed configuration of the surface facility area of the Orchard Valley Mine, the applicant must submit to the Regulatory Authority a revised backfilling and grading cost estimate Eor the surface facility area. If this revised cost figure is greater than the present estimate, the amount of the reclamation bond will be increased accordingly. 24. The operator is directed by the Regulatory Authority to install the moni- toring network shown on Map 28B above the 5 north panel of the 8th East Main prior to November 1, 1981. In order to determine the adequacy of the simplis- tic monument proposed for use in this network, the applicant shall install ap- propriate benchmarks to allow quarterly monitoring of the monument network for a minimum of 9 months prior to mining within the subject panel. Prior to the installation of the monument network benchmarks, the operator shall obtain ap- proval from the Regulatory Authority of the benchmark's location and construc- tion. Following receipt of that approval, the operator shall amend Map 28B to indicate the location of the approved benchmarks. 25. The Regulatory Authority directs Colorado Westmoreland, Inc. to submit reports to its subsidence monitoring program on a semi-annual basis, commenc- ing one month after the installation and initial surveying of the subsidence monuments. Further, due [o the complexity of the permit area, geology, presence of steep slopes, and sensitive hydrologic elements, Colorado West- moreland, Inc. is directed to submit a proposed subsidence monitoring report format to the Regulatory Authority for approval. This report Eormat should recognize the importance of continual update of subsidence data interpreta- tion, monitoring of groundwater levels and spring flows, monitoring of mine inflow, and subsurface ground conditions which could be correlated to subsi- dence prediction. This report format shall be approved by the Regulatory Authority prior to the commencement of extraction of coal within the 5 North panel off the 8th East Main of the Orchard Valley Mine.