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• <br />Mountain Coal Company Exhibit 27 <br />West Elk Mine Characteristics of West Elk Mine Soil Mapping Units <br />In their virgin state. the soils or mapping unit number 6 are not very susceptible to <br />accelerated soil erosion by either wind or water. When cleared or disturbed they are <br />moderately susceptible to both and will require erosion control practices. <br />Chemical Properties and Natural Fertility - Normally there are no serious chemical <br />limitations to the use of the soils of mapping unit number E for plant growth. There are <br />no harmful salts or sodium. A few of the soils of this umt are calcareous but free <br />carbonates de not hinder uptake of plant nutrients. <br />The lighter colored components of Mapping Unit Number 6 have lower than normal <br />fertility levels for the mine area. The components with dark surface horizons appear to <br />be average for the area. Some evidence of phosphorus deficiency was found in the soil <br />analysis (see Exhibit 26). Supplemental fertilization of disturbed areas should include <br />nitrogen and phosphorus to insure a vigorous growth of vegetation in the shortest time. <br />Mapping Unit Number X6 - This mapping unit has the same description as mapping <br />unit number 6. <br />C~ <br />Classification of Major Components -The components listed below comprise the major <br />part of mapping unit number Xti. <br />A. Typic Cryorthents (Cold Lithosols). <br />1. Loamy, mixed, (calcareous), shallow. <br />(Roxal Series) <br />2. Clayey, montmorillonitic, (calcareous), shallow. <br />(Series unidentified) <br />B. Typic Cryoborolls (Chernozemic Lithosol). <br />1. Loamy, mixed, shallow. <br />(Bucklon Series) <br />(Tealson Series) <br />2. Clayey, montmorillonitic, shallow. <br />(Series unidentified) <br />C. Lithic Cryoborolls (Chernozemic Lithosol). <br />1. Loamy, mixed. <br />(Hayton Series) <br />2. Loamy-skeletal, mixed. <br />(Eyre Series) <br /> <br />Exhibit 27-9 <br />