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PERMFILE70564
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PERMFILE70564
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Entry Properties
Last modified
8/24/2016 11:19:49 PM
Creation date
11/20/2007 11:25:18 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981019
IBM Index Class Name
Permit File
Doc Date
5/4/2007
Doc Name
Soil Inventory Danforth Hills Project Report Dated 12/17/1984
Section_Exhibit Name
Exhibit 09 Item 7 -ST
Media Type
D
Archive
No
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1.3 Summary of Results <br />The B,000 acre study area is located in the Danforth Hills in <br />northwestern Colorado. The site consists of broad uplands, narrow <br />ridges, steep mountain sideslopes, and narrow valley bottoms. The <br />major streams are Wilson, East Fork of Wilson, Good Spring, West Fork <br />of Good Spring, ono Taylor Creeks. James and Elkhorn are two smaller <br />creeks in the northeastern part of the study area. , <br />The soils on the broad, gently sloping uplands are moderately <br />deep, dark, and loamy. They are derived from interbedded sandstone and <br />shale, and some are clayey below two feet. Shallow, flagyy, <br />light-colored soils occupy narrow ridyetops and breaks in slopes. <br />Soils on the east and west facing mountain sideslopes under mountain <br />shrubs have thick, dark surface looms with gravelly foams or clayey <br />subsoils. Soils on south facing mountain sideslopes are shallow, <br />weakly developed, channery or flagyy, and loamy to clayey. Soils on <br />north-facing mountain sideslopes under aspen or mountain shrubs have <br />thick, dark, loamy surface layers over cobbly subsoils. Valley bottom <br />soils are deep, mostly well drained, dark looms but a few are poorly <br />drained and/or stratified with thin lenses of clay or gravel'. There <br />are recent flood deposits of very gravelly loamy sands. <br />The soils of the study area are classified as Moll.isols in <br />fine-loamy, loamy-skeletal, and fine fam flies. Subgroups are <br />Haploborolls, Cryaquolls, Cryoboroils, and Paleborolls. The shallow <br />soils are Entisols in the same families, in subgroups of <br />Torriorihents, Cryorthents and Torrifluvents. <br />The primary land use in the study area is grazing. Some ranches <br />use the bottomlands for grazing, pasture, hay production ono <br />residences. The soils are, for the most part, in SCS lantl capability <br />classes considered unsuitable for cultivation. <br />There are no prime farmlands in the study area. <br />Tne soils of the site are generally well suited for reclamation. <br />Field and laboratory results indicate very good physicial and chemical <br />characteristics. Piany of the soils have thick dark rnollic epipedons <br />that have excellent reclamation potential and the subsoils have few <br />limiting features. When calculating topsoil volumes, the volume <br />available from the mollic epipedons (lift 1) should be calculated <br />first, and any deficit made up from the subsoils (lift 2). <br />The soils appear to be thick enough to provide adequate <br />topsoiliny material. However volumes were not calculated for this <br />study because the affected area is not defined at this time. <br />Hottomland soils have a lift 1 thickness of about five feet. Upland <br />.soils under thick vegetation are one to three feet thick in lift 1 and <br />one to three feet thick or more in lift 2. Soils associated with rock <br />outcrops or those that have lower organic matter content (Entisols) <br />are not recommended for lift 1 but have lift 2 thicknesses of one to <br />tnree feet. Most of the map units of the study area have a combined <br />5 <br />
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