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Banks and Gesso. LLC
<br />Exhibit I -Soils Information
<br />Please refer to Exhibit C-1: Pre-Mining Map for mapped USDA soils.
<br />There are four types of soils present within the proposed permit boundary. All of these
<br />soils are suitable for reclamation activities. The four types are Arvada loam, Halaquepts,
<br />Kim loam and Wann sandy loam. Descriptions of these soil types are found below from
<br />the NRCS Soil Survey for the Rifle Area, Parts of Garfield and Mesa Counties.
<br />3-Arvada loam, 1 to 8 psrgnt alopea. This deep,
<br />well drained, sloping soil is on fans and high terraces
<br />(fig. 4). Elevatlon ranges from 5,100 to 6,200 feet. This
<br />soil formed in highly saline alluvium derived from sand-
<br />stone and shale. The average annual precipitation is
<br />about 12 inches, the average annual air temperature is
<br />about 46 degrees F, end the average frost-free period is
<br />about 120 days.
<br />Typically, the surface layer is strongly alkaline or very
<br />strongly alkaline, pale brown loam about 3 inches thick.
<br />The subsoil is brown silty clay loam about 14 inches
<br />thick. The Substratum is light brawn or brown silty Clay
<br />loam to a depth of 60 inches.
<br />Included with this soil in mapping are small areas of
<br />Limon, Kim, Heldt, antl Wann soils. Also included are
<br />Some soils that ere high in Silt.
<br />Permeability is very slow, and available water capacity
<br />is moderate. Effective rooting depth is 60 inches or
<br />more. Organic matter content of the surtace layer is low.
<br />Sudace runoff is medium, and the erosion hazard is
<br />moderate.
<br />This soil is used mainly for wildlife habitat, limited
<br />grazing, and some irigated farming.
<br />Irrigated crops produce very poorly because the soil
<br />takes water in very slowly antl is droughty. Leaching is
<br />needetl to remove excess salts if this soil is to De irrigat-
<br />ed. Soil amendments containing sulphur are helpful in
<br />leaching the salt.
<br />Tha native vegetation on this soil is mainly saltgrass,
<br />alkali sacaton, and greasewood.
<br />When range condition deteriorates, (orbs and shrubs
<br />increase. Properly managing grazing maintains and im-
<br />proves range condition. Seeding improves range in poor
<br />condition. Western wheatgrass, alkali sacaton, and tall
<br />wheatgrass ere Suitable for seetling. Preparing a
<br />seedbed and drilling the seed are good practices. Irrigat-
<br />ing new seedfngs is necessary for successful establish-
<br />ment. Reducing brush improves Me range if the grass
<br />untlerstory is adequate.
<br />Cottontail rabbit antl pheasant find shelter on this soil
<br />if they can obtain food in surtounding areas.
<br />Use of this soil for sanitary facilities, for community
<br />development, and es a source of construction material is
<br />limited by the high shrink-swell potential, slow permeabil-
<br />ity, clayey teMUres, and salinity.
<br />This soil is in capability subclass VIIS, inigated and
<br />noninigated.
<br />27-Halaquepts, nearly level. This broadly defined
<br />unit consists of deep, somewhat poorly tlrainetl to poorly
<br />drained, nearly level and gently sloping, salt-affected
<br />soils in nertow foothill valleys, on fans, and on low ter-
<br />races. Slopes ere 0 to 6 percent. These soils formed in
<br />alluvium.
<br />The soils are exbemely variable. The upper 24 inches
<br />ranges from loam to clay, and the underying layers are
<br />generally gravelly. The soils are commonly gleyed from
<br />the surtace down. Stratified sand, gravel, and cobbles
<br />are at a tlepth of 24 to 40 inches. In some areas, gravel
<br />and cobbles are et or near the surtace.
<br />Included with these soils in mapping ere small, isolat-
<br />ed areas of Arvada, Liman, and Heldt soils that have
<br />slopes of 1 to 6 percent Small areas of severely alkali-
<br />affected soils ere identified by an alkali spot symbol.
<br />These areas make up 10 to 15 percent of the map unit.
<br />The water table. is at or near the sudace at times,
<br />mainly during spring and summer. The level of the water
<br />table is strongly influencetl by the seasonal water level In
<br />nearby sbeems end rivers and higher lying irrigation
<br />ditches. Water seeps from the ditches into these soils.
<br />These soils are subject to rare or occasional flooding.
<br />This unit is used mainly for grazing.
<br />Some hay is grown in areas drained by ditches. Yields
<br />are low because of saline condition. Alkali-tolerant
<br />grasses and legumes must De grown for productive hay
<br />and pasture.
<br />The native vegetation consists of willows, tamarisk,
<br />cottonwoods, and alkali- and water-tolerant grasses.
<br />Game birds, rabbits, deer, and other wildlife find habi-
<br />tat on these soils. Ducks and geese nest in the more
<br />swampy areas. Mourning doves nest in the cottonwoods
<br />and tamarisk. Rabbits and deer find adequate food and
<br />cover on these soils. Where the soil has been drained
<br />end is suiteWe for hay and pasture, planting food plots.
<br />trees and shrubs, and nesting cover enhances habitat for
<br />upland wildlife. Where the water table is high, open
<br />water for watertowl can be tleveloped by blasting or
<br />excavating.
<br />Community development is limited by flooding and
<br />tlepth to water table. Onsite investigation is necessary
<br />for appropriate design and construction to overcome
<br />these limitations.
<br />These soils are in capability subclass Vlw, nonirrigat-
<br />ed.
<br />Grand River Park Project 05021
<br />Silt Sand & Gravel LLC 22 May 2006
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