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PERMFILE109841
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PERMFILE109841
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Entry Properties
Last modified
8/24/2016 10:06:50 PM
Creation date
11/24/2007 6:59:36 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Section_Exhibit Name
EXHIBIT 16 SOIL MAPPING UNIT DESCRIPTIONS
Media Type
D
Archive
No
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• soil is forming in weathered sandstone material. It is about 6 inches thick <br />over sandstone, has rapid surface runoff and a low waterholding capacity. <br />Included are thin ledges of Rock Outcrop (RL). <br />All of the acreage is in native range and is being used for grazing. If <br />grazing is managed so that grasses are not depleted, the soil will not erode. <br />2VD--Routt loam, 3 to 25 percent slopes. This deep, well drained soil is <br />on benches and mountainsides. It formed in colluvium and residuum derived <br />dominantly from sandstone and shale. Elevation is 7,000 to 8,500 feet. The <br />average annual precipitation is 18 to 25 inches, the average annual air temp- <br />erature is 37 to 40 degrees F, and the frost-free season is 40 to 65 days. <br />Typically, the surface layer is very dark grayish brown to brown loam <br />about 26 inches thick. The upper part of the subsoil is yellowish brown clay <br />loam about 12 inches thick. The lower part to a depth of 60 inches or more is <br />• yellowish brown and light yellowish brown silty clay loam. <br />Included in this. unit are small areas of Coutis fine sandy loam, Buckskin <br />loam, and Cochetopa loam. <br />Permeability of this Routt soil is very slow. Effective rooting depth is <br />60 inches or more. Available water capacity is high. Runoff is medium, and <br />the hazard of water erosion is high. <br />Most areas of this unit are used for livestock grazing and wildlife <br />habitat. A few areas are used for irrigated hay and nonirrigated crops. <br />Wheat is the main nonirrigated crop. <br />The potential plant community on this unit is mainly Letterman needle- <br />grass, Columbia needlegrass, mountain big sagebrush, and mountain snowberry. <br />Other plants that characterize this unit are mountain brome, Idaho fescue, <br />slender wheatgrass, low rabbitbrush, and Saskatoon serviceberry. The average <br />• annual production of air-dry vegetation is about 1,500 pounds. <br />Ex. 16-6 <br />
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