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2.04.9 Soils Resource Information <br />erosion hazard for water is moderate to very severe (increasing with steepness of <br />slope). Wind erosion hazard is moderate. <br />The map unit is mainly used for mining activities, including roads, portals, and <br />facilities. <br />The present plant community is mainly summer -cypress, crested wheat grass, <br />and some rabbit brush and lupines. <br />Two grab samples were taken from disturbed areas. These samples were <br />described and analyzed with the other samples. The samples are representative of the <br />fill material in the sample point areas. <br />GRAB SAMPLE MCL <br />The soil was sampled at the McClane Canyon Mine at the portal area on a 30 to <br />35 percent slope about 2,470 feet west and 1,855 feet south of the northeast corner of <br />Section 21, T 7 S, R 102 W at an elevation of 5,672 feet. It is fill derived from colluvium <br />(of sandstone origin) and some road gravels. <br />AC 0 to 6 inches; very cobbly and stony clay loam; 40 percent cobbles and gravels, <br />10 to 15 percent stones; some coal fragments throughout; some hydromulch on <br />surface; pH 7.4. <br />GRAB SAMPLE MC 2 <br />This soil was sampled at the McClane Canyon Mine near the mouth of the <br />canyon and the equipment storage area about 1,420 feet east and 2,280 feet south of <br />the northwest corner of Section 21, T 7 S, R 102 W, on a 0 to 3 percent slope at an <br />elevation of 5,470 feet. It is fill derived from alluvium some road gravels. <br />AC 0 to 4 inches; gravelly and cobbly sandy clay loam; 20 percent cobbles and <br />gravels; some coal wash fragments throughout; pH 7.8. <br />MAP UNIT: GDAB - GLENDIVE SANDY LOAM, 0 TO 8 PERCENT SLOPES <br />This map unit is on nearly level to moderately sloping flood plains and valley <br />bottoms. The slope is 0 to 8 percent. The native vegetation is mainly a greasewood- <br />shrubland community. Included in the map unit is about 10 percent Havre loam, and 5 <br />percent Fruita fine sandy loam. These soils occur randomly within the map unit. <br />Included areas make up about 15 percent of the total acreage. The Fruita soil is a <br />member of the fine -loamy, mixed, mesic family of the Typic Haplargids. <br />Typically, the surface layer of the Glendive soil is a pale brown, platy loam or <br />sandy loam about 5 inches thick. The subsoil is a pale brown to light yellowish brown <br />PR -02 2.04-40 10/12 <br />