2008-01-14_PERMIT FILE - X200821712 (6)

Home Browse Search

NOTICE OF INTENT TO EXPLORE INVOLVING REMOVAL OF 250 TONS OR LESS OF COAL .JEEP TRAIL COAL EXPLORATION PLAN AREA PAGE 9 is usually poor, these units are not considered aquifers in that they do not store and transmit water of such quality and in sufficient quantities to be of beneficial use. The only probable significant aquifer in the XPA is the thin alluvium in the bottom of Hubbard Creek Canyon. No drilling is proposed in these canyon bottoms. Restricted terraces present mainly on the west side of Hubbard Creek are most likely Pleistocene remnants that carry water seasonally but are too high for significant recharge from the creek itself. These remnants contain the springs and the small spring-fed ponds described in the sultFacE WATER section immediately above. Soils The following is obtained from the Final Environmental Impact Statement, Iron Point Exploration License, Iron Point Coal Lease Tract, Elk Creek Coal Lease Tract, Delta and Gunnison Counties, Colorado, February 2000, formulated by the USDA-Forest Service, USDI-Bureau of Land Management and USDI-Office of Surface Mining Reclamation & Enforcement. Soils overlying mountain side slopes and toe slopes are developing in residuum and colluvium from sandstone and shale sources, as well as from some mixed alluvium parent materials. Soils overlying mountain side slopes and toe slopes are developing in residuum and colluvium from sandstone and shale sources, as well as from some mixed alluvium parent materials. These soils occur on slopes typically ranging from 20 to 70 percent and are primarily deep to very deep, well drained, and have moderate to high available water capacities. Soil textures are highly variable ranging from loams to very stony clays for surtace soils and from loams to very cobbly clays for subsurface soil horizons. Coarse fragment percentages increase with depth. The mass movement potential is rated as moderate to high for most of these map units, though low ratings are common for lesser slope angles. Soils of canyon, mesa, ridge, mountain, and valley side slopes are highly variable given the broad topographic range of this grouping. Parent materials include interbedded sandstones, shales and mixed igneous rock types. Slopes range from 5 to 90 percent. These soils are shallow to very deep, well drained, and typically exhibit low to medium available water capacities. Surface textures range from clay loams to extremely stony loams while subsurface textures range from stoney sandy loams to very cobbly clays. The mass movement potential is low to high given the broad slope range. Deep to very deep, well drained soils with low and moderate available water capacities typify mesa summits, ridges, benches and side slopes of the project area. Interbedded limestones, shales, and basalts are the dominant parent materials underlying slopes ranging primarily from 15 to 65 percent. Surface soil textures