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Banks and Gesso, Lf_C
<br />00-Klm loam, 3 to 8 psresnt abpes. This deep,
<br />well drained gently to sloping soil is on alluvial fans and
<br />benches. Elevation ranges hom 5,000 to 6,000 feet. This
<br />soil formed in alluvium derivetl from shale end sand-
<br />stone. The average annual precipitation is about 12
<br />inches, the average annual air temperature is about 46
<br />degrees F, and the average frost-free period is shout
<br />126 days.
<br />Typically, the surtece layer is yellowish brown or light
<br />yelbwish brown loam about 17 inches thick. The under-
<br />lying material is light brownish gray loam to a depth of
<br />60 inches. In places [he underlying material is stratified
<br />with fine sandy loam.
<br />Included with this soil in mapping are small areas of
<br />Arvada and Olney soils that have slopes of 3 to 6 per-
<br />cent. These areas make up 5 to 15 percent of the map
<br />unit.
<br />Permeability is moderate, and available water capacity
<br />fs high. Effective rooting depth is 60 inches or more.
<br />Surface runoff is slow, and the erosion hazard is moder-
<br />alG.
<br />This soil is used mainly for crops, hey, and pasture.
<br />Attalla, small grains, and grass or grass-legume mixtures
<br />are grown.
<br />This soil is Irrigated by flooding or furrows. Sprinklers
<br />are also suitable. Drop structures in d'aches control water
<br />antl prevent excessive ditch erosion.
<br />The native vegetation on this soil is mainly wheat-
<br />grasses, needleandihread, and sagebrush.
<br />When range condition deteriorates, lorbs end shrubs
<br />increase. When the range is in poor condition, undesira-
<br />ble weeds and annual plants are numerous. Properly
<br />managing grazing maintains and improves range condi-
<br />tion. Reducing brush improves the range. Seeding im-
<br />proves range in poor condition. Crested wheatgrass,
<br />western wheatgrass, end Russian wildrye are suitable for
<br />seeding. Preparing a seedbed and drilling the seed are
<br />good practices.
<br />Conontail rabbit, ground squircel, and pheasant find
<br />habitat on this soil.
<br />Use of this soil for community development and as a
<br />source of construction material ie limited by low strength.
<br />This soil is in capability subclasses Ille, irrigated, and
<br />IVC. noninigated.
<br />72-Warm sandy loam, 1 to 3 percent abpes. This
<br />deep, somewhat poorly drained, nearly level to gently
<br />sloping, low-lying soil is on tercaces and bottom land in
<br />valleys. Elevation ranges from 5,000 to 6,500 teat. The
<br />soil formed in alluvium derived primarily from sandstone
<br />and shale. The average annual precipitation is about 12
<br />inches. the average annual air temperature is about 46
<br />degrees F, antl the average frost-free period is about
<br />120 days.
<br />Typically, the upper part of the surtace layer is dark
<br />grayish brown sandy loam about 8 inches thick, and the
<br />lower part is dark greyish brown tine sandy loam about 4
<br />inches thick. The upper part of the underlying material is
<br />mottled, light brownish gray tine sandy loam and sandy
<br />loam about 24 inches thick, and the lower part is mottled
<br />light brownish gray coarse sandy loam to a depth of 60
<br />inches.
<br />Includeb with this soil in mapping are small areas of
<br />Kim and Arvada soils and Torrifluvents. These soils have
<br />slopes of ; to 3 percent. These areas make up 5 to 16
<br />percent of the map unit.
<br />Permeability is moderately rapid, and available water
<br />capacity is nigh. Effective rooting depth varies with the
<br />evei of ine water table but is usually about 2 fee!.
<br />Surface runoff is :~.lox•. ant Ula erosion hazard is moder-
<br />ate Depth tc the wa'ar IGble ranges from 2 to 3 feet.
<br />The level of the waver tai+!e varies with the amount of
<br />inigalion water applied A ':ds sci! and sunoundinc Soils.
<br />Water ponds it spnno. This soil is o.^cesional:y flood e:
<br />for brief periods between Apni and July.
<br />TMs >Gi~ ~~- used mainly fol n~azl;:,r„ g. as3 pr tegumff
<br />he'. and pGSL'J19.
<br />Tii_ drains and irc~proved water management increase
<br />the Potential 1c: crops. This sot: is uwall7 ir.igatad by
<br />iunow; or flooding. Sprnklers are also we.. ,tilted.
<br />The native vegetation. nn this soil is mainry alkali sa:;a-
<br />toc, saltgrass, whsatgrass, sedges, end rabbilbrusr:.
<br />When rang= condition deteriorates, shrubs an safl-
<br />grass incease. Whe~~ the range I=_ m poop cpndlcor,
<br />undesirable weeds arld annual plants ors abundar,!.
<br />Properly managing grazing maintains and improves
<br />range condtion. Alkali sacaton and western whealgrass
<br />are suitable for seeding. Preparing a seedbed and drilling
<br />the seed are good practices. Controlling brush improves
<br />range that is producing more woody shrubs than is nor-
<br />mally found in the potential plant comrnunity, but care
<br />should be taken to leave stands of fourwing saltbusF..
<br />Mourning dove, ground squirrel, codonteit rabbit, end
<br />some pheasant find habitat on this soil
<br />Community development is limited by a high water
<br />table, seasonal Iloodiny, seepage, and frost heaving.
<br />Drainage increases potential ±or various uses.
<br />This soil is in capability suociasGGS IVw, irrigated, and
<br />Vlw, noninigated.
<br />Grand River Park Project 05021
<br />Silt Sand & Gravel LLC 23 May 2006
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