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in the critical toe area of any of the slide bodies. Subsidence in these areas was [o be controlled by split pillar removal. In 1986 a debris Flow at the site displaced the Bear Mine fan. In 1993 the area of the access road immediately below the fan slid, dropping [he upper road approximately six feet. It is not known if the debris flows were reactivated by mining activity. Bear Coal Company has performed subsidence monitoring quarterly and will continue to submit reports semi-annually. One of these reports will be the Annual Subsidence Report and will be submitted by March 15 of each year. The study by Rocky Mountain Geotechnical indicates that mining of the C-Seam would result in propagation of fractures upward through the geologic section for approximately 360 feet. Strata between the C-Seam and the massive sandstone at the top of the lower coal bearing member would be rubbilized to some degree. No rubbilization of the overlying E- and F-Seams was expected to occur. Subsidence of the land surface was expected to a maximum of six to eight feet in the northwestern part of the mine. The mining operation is in compliance with the provisions of this section with the stipulations. XVI. Concurrent Surface and Underground Mining This section does not apply to the Bear Coal Company permit. XVII. Operations on Alluvial Valley Floors Information describing alluvial valley floors (AVFs) in the study area is located in Section 2.06.8 of the Bear No. 3 permit revision application. The alluvial valley floor findings made by the Division for the Mountain Coal Company, West Elk Mine are directly applicable to the Bear Mine. The Bear No. 3 permit area and hydrologically adjacent areas were included in the Mountain Coal Company AVF survey area. No AVFs are located within the Bear mine permit boundary. The only part of the proposed permit or hydrologically adjacent area identified as alluvial deposits are adjacent to the North Fork of the Gunnison River. Several small bodies of alluvium lie along the course of the river between the mouth of Sylvester Gulch, immediately upstream of the Bear No. 1 portal and facilities area and the town of Somerset. The reclaimed No. 1 portal and the area of the Bear No. 3 facilities both overlie alluvial material. Neither of these areas meets the ten-acre minimum size criterion; therefore, they are not an alluvial valley floor. The Mountain Coal Company study identified a much larger body of alluvium downstream from Somerset, Colorado. Areas currently supporting agriculture have been identified within Sections 13 and 14, T135, R91 W, associated with the North 31