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PERMFILE130951
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PERMFILE130951
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Entry Properties
Last modified
8/24/2016 10:31:49 PM
Creation date
11/25/2007 10:47:55 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981022A
IBM Index Class Name
Permit File
Doc Date
9/16/2005
Section_Exhibit Name
2.04 Environmental Resources
Media Type
D
Archive
Yes
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Sccdwr - 2.04.9 <br />conducted by the USDA Soil Conservation Service and limited site-specific mapping, field <br />• characterization, sampling, and laboratory analysis for actual mine disturbance areas. <br />Soils Information <br />Soils development and occurrence in the mine permit and adjacent areas reflecu the dominant <br />sedimentary geology of the area, the relatively rugged topography, and the semi-arid clunate. Based <br />on the 1981 USDA-SCS Soil Survey of Paonia Area, Colorado, the Tomorthenu-R«k outcrop, <br />described as follows, is the dominant soil type in the OMI permit and adjacent areas: <br />Tomorthenu-R«k outcrop -Shallow to moderately deep, moderately steep to very steep, <br />well drained stony soils that formed in residuum, colluvium, and alluvium derived from <br />sedimentary rock, and R«k outcrop. The soils are on steep side slopes of canyons, in areas <br />below r«k escarpmenu, and on low terraces and alluvial fans. Torriortenu have little or no <br />soil development. The surface layer u very stony and ranges from sandy loam to clay loam <br />The underlying material u cobbly, stony, and bouldery sandy loam, loam, or clay loam R«k <br />outcrop u on the upper margins of side slopes. Steepness of slope, stoniness, and the <br />presence of Rock outcrop are severe limitations to most uses of the soils in this unit. <br />Consistent with the USDA-SCS soil description, soils on the ridge-tops and steep valley side-slopes <br />are generally thin and poorly developed with extensive exposures of resistant rock outcrop and stony <br />foams dominant. Valley deposits range from relatively coarse colluvial mass wasting and slope wash <br />deposiu in the upper valley reaches to thicker, moderatelgsorted colluvial/alluvial deposiu in the <br />lower valley reaches. Extensive ponions of the lower slopes along the North Fork Valley have been <br />disturbed by historic nesting activities, with surficial materials consisting of undifferentiated muted <br />soils and mine waste. <br />• General Soils Maooine <br />Based on the more detailed mapping and descriptions of individual soil uniu contained in the USDA- <br />SCS soil survey report, the following principal soil mapping uniu have been delineated in the mine <br />permit and adjacent areas: <br />Absarokee-Work foams <br />BeenonrAbsarokee foams <br />BeenotrrAbsarokee ass«iation <br />Deleon very stony loam <br />Fughes loam <br />Fughes-Curecanti stony foams <br />Kech-Rock outcrop complex <br />Tomorthenu-Haplargids complex, very stony <br />Tomorthenu-R«k outcrop, sandstone, complex <br />J <br />The Regional Soils Map, (Map 2.04-M~ shows the 1«auoru and boundaries of the mapped soil uniu <br />in the general mine perrni[ area. <br />Site-SQecific Soils MapRing and Characterization <br />Based on the available USDA-SCS soils mapping, the existing soils which have been or will be <br />disturbed by mining and related activities are limited to five soil mapping units. Two of these uniu <br />«cur in the Hubbard Creek area; two in the Beaz Creek area (one of which duplicates one of the <br />. Hubbard Geek unit(s); one in the Ells Creek support facilities area at the bottom of Elk Creek; and <br />one u ass«tated with the alluvial faro at the outleu of the numerous small ephemeral drainages in the <br />area. Inclusions of other soil types occur within the primary soil uniu, although their areal extent and <br />significance are minor. <br />PR04 2.04-84 Revised August 2000 <br />
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