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RULE 2 PERMITS <br />The descriptions of the soils series are as follows: <br />03B - Havre Fine Sandy Loam, 0 to 5 Percent Slopes <br />This is a deep, well drained soil that occurs along drainage ways in and adjacent to the permit area. A <br />very small area (about: 1 acre) of this series was disturbed by the access road, no additional activity is <br />anticipated on areas of this series. Therefore, detailed chemical and physical data has not been collected <br />for this series. It developed in stratified alluvium from sandstone and shale and is on flood plains and <br />terraces. The average annual precipitation ranges from 12 to 16 inches, the average annual soil <br />temperature is 42° to 47°F, and the frost-free season is 75 to 95 days. <br />Included with this soil in mapping are small areas of Homelake, Glendive, and Havre saline phase soils. <br />Typically the surface layer is a dark gray fine sandy loam about 3 inches thick. The substratum is <br />calcareous and stratified with colors of gray, light brownish gray, and pale brown. Textures are fine sandy <br />loam, loam, sandy clay loam, silt loam, and silty clay loam. Mottling may occur below 40 inches. <br />Permeability is moderate. The available water capacity is high. Effective rooting depth of 60 inches or <br />more. Surface runoff is slow, and the erosion hazard is moderate from wind and low from water. <br />Most of this mapping unit is used for non-irrigated and irrigated hay and pasture. Present and potential <br />productivity of the soil is good. <br />14E - Burnette Loam, 12 to 25 Percent Slopes <br />This is a deep, well drained soil that occurs throughout the area to be mined. This soil provides the best <br />and most abundant source of plant growth medium of the soils in the permit area. The death of useable <br />soil is extremely variable, depending upon slope and location, and in the bottom of the Streeter drainage <br />the A horizon has been found to be as thick as twenty (20) feet. The soil developed in mixed sandstone <br />and shale and is found on upland valley sideslopes and benches. The average annual precipitation ranges <br />from 16 to 18 inches, the average annual soil temperature is 43°F to 45°F, the mean summer soil <br />temperature is 56 to 56°F., and the frost-free season is 70 to 90 days. <br />Included within this mapping unit are a few small areas of sandstone or shale outcrops and small areas of <br />Work and Campspass soils. <br />The duff layer consists of decomposed and undecomposed leaves, twigs, and grass. Typically the surface <br />layer is a dark grayish brown loam about 20 inches thick. The subsoil is a light yellowish brown clay <br />loam about 25 inches thick. The substratum is a light yellowish brown clay loam to a depth of 60 inches. <br />Permeability is moderate. The available water capacity is high. Effective rooting depth is 60 inches or <br />more. Surface runoff is slow, and the erosion hazard is moderate from wind and high from water. <br />Most of this mapping unit is native range and used for grazing. Present and potential productivity of this <br />soil is good. <br />14F - Burnette Loam, 25 to 65 Percent Slopes <br />This soil has the same characteristic as the previous soil, except it is found on steeper slopes. It developed <br />in mixed sandstone and shale and is on upland valley sideslopes. The average annual precipitation ranges <br />Rule 2 Permits 2.04.9-2 Revision Date: 6/23/08 <br />Revision No.: MR-91