2007-02-13_GENERAL DOCUMENTS - C1980007

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Soils of the West Elk Mine were mapped during the summer of 1976. Throughout the soil survey, "mapping units" were used to characterize the soils in the mine azea. These survey mapping units are combinations of Soil Families or selected Great Groups and Subgroups according to the system of soil taxonomy used in the National Soil Survey Program of the United States. During the summer of 1993, the soils of the Jumbo Mountain Tract were mapped utilizing criteria and descriptions contained in the Soil Conservation Service soil survey of the Paonia, Colorado azea (USDA-SCS, 1993). The maps have been updated for subsequent permit revisions. Any discrepancies in soil mapping units can be attributed to the change in soil classification during the time between the mapping efforts. The survey is a general reconnaissance and the mapping units aze broad in concept. Vegetation -Rule 2.04.10 Specific information regazding collection and analysis of vegetation can be found in Section 2.04.10 in the permit document. The distribution of the land and vegetation types can be found on Map 42 and 43. The West Elk Mine collected baseline vegetation information in 1975, 1976, and 1993 by studying a designated environmental study area, which extends approximately one mile outside the permit boundary and mine plan boundary. This azea is approximately 25,560 acres in size. This survey identified ten vegetation types and six land types. They aze as follows: 1) Aspen, comprising 19 percent of the study area; 2) Douglas fir, comprising four percent of the study azea; 3) Wet Mixed Shrub, comprising 50 percent of the study azea, dominated by servicebeny and Gambel oak; 4) Dry Mixed Shrub, comprising 10 percent of the study azea, distinguished by serviceberry, Gambel oak, Mountain mahogany, Cliff findlerbush, and bitterbrush; 5) Oak, comprising one percent of the study azea, including Gambel oak and the lazger size oak individuals (15-20 ft in height), which aze limited to the bottom of permanent stream drainages; 6) Juniper, comprising five percent of the study area, which includes Rocky Mountain Juniper and Utah Juniper; 7) Riparian, comprising two percent of the study area, 8) Sagebrush, comprising six percent of the study azea; 9) Wet Meadow, comprising one percent of the study azea, distinguished by open boggy azeas along major drainages above 7,000 feet and openings in brushy or forested azeas at elevations above 8,000 feet, occupied by herbaceous species such as sedges and false hellebore; 10) Dry Meadow, comprising one percent of the study azea which is dominated by various shrub species such as snowberry, Douglas rabbitbrush, and Gambel oak; 11) Barren Terrain, comprising less than one percent of the study azea which was identified by no appazent vegetation cover; 12) Chained Area, comprising less than one percent of the study azea, is so named because the area has been mechanically treated by chaining to remove tall shrub species and has been trenched along the contours and planted to ponderosa pine; 13) Reservoir, comprising less than one percent of the study area and includes Beaver Reservoir and Minnesota Reservoir; 14) Residential, comprising less than one percent of the study azea and includes the town of Somerset; 15) Industrial, comprising less than one percent of the study azea which includes the Elk Creek Mine, the Bear No. 3 Mine, railroad sidings, and mine vents; and 16) Agricultural, comprising less than one percent of the study area. The two vegetation types that occur within fire area to be affected by surface facilities are a dry meadow type and a moist, mixed shrub type. 32