HomeMy WebLinkAbout20060720.tiff Attachment to USR Application
Great Western Oil & Gas Company, LLC
The following are the soil types found on the lands within the Subject Property. These descriptions are
taken from the Soil Survey of Weld County, Southern Part, published by the U.S.D.A.
32—Kim loam, 1 to 3 percent slopes. This is a production drops. Undesirable weeds and
deep, well drained soil on smooth plains and annuals invade the site as range condition
alluvial fans at elevations of 4,900 to 5,250 feet. becomes poorer.
It formed in mixed eolian deposit and parent Management of vegetation on this soil
sediment from a wide variety of bedrock. should be based on taking half and leaving half
Included in mapping are small areas of soils that of the total annual production. Seeding is
have loamy sand underlying material. desirable, if the range is in poor condition.
Typically the surface layer is brown and pale Sideoats grama, little bluestem, western
brown loam about 12 inches thick. The upper 28 wheatgrass, blue grama, pubcactint wheatgrass,
inches of the underlying material is pale brown and crested wheatgrass are suitable for seeding.
loom. The lower part to a depth of 60 inches is The-grass selected should meet the seasonal
pale brown fine sandy loam. requirements of livestock. It can be seeded into
Permeability is moderate. Available water a clean, firm sorghum stubble, or it can be drilled
capacity is high. The effective rooting depth is 60 into a firm prepared seedbed. Seeding early in
inches or more. Surface runoff is medium, and spring has proven most successful.
the erosion hazard is low. Windbreaks and environmental plantings of
In irrigated areas this soil is suited to all trees and shrubs commonly grown in the area
crops commonly grown in the area, including are generally well suited to this soil Cultivation to
corn, sugar beets, beans, alfalfa., small grain, control competing vegetation should be
potatoes, and onions. An example of a suitable continued for as many years as possible
cropping system is 3 to 4 years of alfalfa following planting. Trees that are best suited and
followed by corn, corn for silage, sugar beets, have good survival are Rocky Mountain juniper,
small grain, or beans. Land leveling, ditch lining, eastern redcedar, ponderosa pine, Siberian elm,
and installing pipelines may be needed for Russian-olive, and hackberry. The shrubs best
proper water applications,. suited are skunkbush sumac, lilac, Siberian
All methods of irrigation are suitable, but peashrub, and American plum.
furrow irrigation is the most common. Barnyard Wildlife is an important secondary use of this
manure and commercial fertilizer are needed for soil. The cropland areas provide favorable
top yields. habitat for ring-necked pheasant arid mourning
In nonirrigated areas this soil is suited to dove. Many nongame species can be attracted
winter wheat, barley, and sorghum. Most of the by establishing areas for nesting and escape
acreage is planted to winter wheat and is cover. For pheasants, undisturbed nesting cover
summer fallowed in alternate years to allow is essential and should be included in plans for
moisture accumulation. Generally precipitation is habitat, development, especially in areas of
too low for beneficial use of fertilizer. intensive agriculture. Range-land wildlife, for
Stubble mulch farming, striperopping, and example, the pronghom antelope, can be
minimum tillage are needed to control soil attracted by developing livestock watering
blowing and water erosion. Terracing also may facilities, managing livestock grazing, and
be needed to control water erosion. reseeding where needed.
The potential native vegetation is dominated This soil has good potential for urban and
by blue grama. Several mid grasses, such 3S recreational development Increased population
western wheatgrass and needleandthread, are growth in the survey area has resulted in
also present. Potential production ranges from increased homesite construction. The chief
1,600 pounds per acre in favorable years to limiting soil feature for urban development and
1,000 pounds in unfavorable years. As range road construction is the limited capacity of this
condition deteriorates, the mid grasses soil to support a load. Septic tank absorption
decrease; blue grama, buffalograss, snakeweed, fields function properly, but community sewage
yucca, and fringed sage increase; and forage systems should be provided if the population
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2006-0720
density increases. Because of the permeability of For pheasants, undisturbed nesting cover is
^ the subatratum, sewage lagoons must bo essential and should be included in plans for
sealed. Lawns, shrubs, and trees grow well. habitat, development, especially in areas of
Capability subclass He irrigated, IVe intensive agriculture.
nonimgated; Loamy Plains range site. This soil has fair to poor potential for urban
development. It has moderate to high shrink
41—Nunn clay loam,0 to 1 percent slopes, swell, low strength, and moderately allow
This is a deep, well drained soil on terraces and permeability. These features create problems in
smooth plains at elevations of 4,550 to 5,150 dwelling and road construction, Those areas that
feet. It formed in mixed alluvium and eolian have loam or sandy loam in the lower part of the
deposits. Included in mapping are small, long substratum are suitable for Septic tank
and narrow areas of sand and gravel deposits absorption fields foundations. Some areas of this
and small areas of soils that are subject to soil are adjacent to streams and are subject to
occasional flooding. Some small leveled areas occasional flooding. The potential is fair for such
are also included. recreational development as camp and picnic
Typically the surface layer of this Nunn soil is areas and playgrounds. Capability class I
grayish brown clay loam about 9 inches thick. irrigated.
The subsoil is light brownish gray clay loam
about 14 inches thick. The upper part of the 42—Nunn clay loam, 1 to 3 percent slopes.
substratum is clay loam. The lower part to a This is a deep, well drained soil on terraces and
depth of 60 inches is sandy loam. smooth plains at elevations of 4,550 to 5,150
Permeability is moderately slow. Available feet. It formed in mixed alluvium and eolian
water capacity is high. The effective rooting deposits. Included In mapping are small, long
depth is 60 inches or more. Surface runoff is and narrow areas of sand and gravel, deposits
slow, and the erosion hazard is low, and small arens of soils that are subject to
This soil is used almost entirely for irrigated occasional flooding, Some leveled areas are
crops. It is suited to all crops commonly grown in also included.
the area, including corn, sugar beets, beans, Typically the surface layer of this Nunn soil is
alfalfa, small grain, potatoes, and onions. An grayish brown clay loam about 9 inches thick.
example of a suitable cropping system is 3 to 4 The subsoil is light brownish gray clay loam
years of alfalfa followed by corn, com for silage, about 14 inches thick. The upper part of the
sugar bests, small grain, or beans. Few substratum is light brownish gray clay loam. The
conservation practices are needed to maintain lower part to a depth of 60 inches is brown sandy
top yields. loam.
All methods of irrigation are suitable, but Permeability is moderately slow. Available
furrow irrigation is the most common. Barnyard water capacity is high. The effective rooting
manure and commercial fertilizer are needed for depth is 60 inches or more. Surface runoff is
top yields. medium, and the erosion hazard is low.
Windbreaks and environmental plantings of In irrigated areas this soil is suited to all
trees and shrubs commonly grown in the area crops commonly grown in the area, including
are generally well suited to this soil. Cultivation to corn, sugar beets, beans, alfalfa, small grain,
control competing vegetation should be potatoes, and onions. An example of a suitable
continued for as many years as possible cropping system is 3 to 4 years of alfalfa
following planting. Trees that are best suited and followed by corn, corn for silage, sugar beeta,
have good survival are Rocky Mountain juniper, small grain, or beans. Generally such
eastern redcedar, pottderosa pine, Siberian elm, characteristics as the high clay content or the
Russian-olive, and haekberry. The shrubs best rapidly permeable substratum slightly restrict
suited are skunkbuah sumac, lilac, Siberian some crops.
pcashrub, and American plum. All methods of irrigation are suitable, but
Wildlife is an important secondary use of this furrow irrigation is the most common. Proper
soil The cropland areas provide favorable habitat irrigation water management is essential.
for ring-necked pheasant and mourning dove. Barnyard manure and commercial fertilizer are
Many nongame species can be attracted by needed for top yields,
establishing areas for nesting and escape cover. In nonirrigated areas most of the acreage is
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in small grain and it is summer fallowed in This soil has fair to poor potential for urban
alternate years-Winter wheat is the principal development- It has moderate to high shrink
crop. The predicted average yield is 33 bushels swell, low strength, and moderately slow
per acre. If the crop is winterkilled, spring wheat permeability. These features create problems in
can be seeded. Generally precipitation is too low dwelling and road construction. Those areas
for beneficial use of fertilizer. that, have loam or sandy loam in the lower part
Stubble mulch farming, striperopping, and of the substratum are suitable for septic tank
minimum tillage are needed to control soil absorption fields and foundations. Some areas
blowing and water erosion. of this soil are adjacent, to streams and are
The potential native vegetation is dominated subject to occasional flooding-The potential is
by western wheatgrass and blue grama. fair for such recreational development as camp
Buffalograss is also present. Potential production and picnic areas and playgrounds. Capability
ranges from 1,000 pounds per acre in favorable subclass lie irrigated, Illc nonirrigated; Clayey
years to 600 pounds in unfavorable years. As Plains range site.
range condition deteriorates, a blue grama-buf-
falograss sod forms. Undesirable weeds and
annuals invade the site as range condition
becomes poorer.
Management of vegetation of this soil should
be based on taking half and leaving half of the
total annual production. Range pitting can help in
reducing runoff. Seeding is desirable if the range
is in poor condition. Western wheatgrass, blue
grama, sideoats grama, buffalograss, pubescent
wheatgrass, and crested wheatgrass are
suitable for seeding. The grass selected should
meet the seasonal requirements of livestock. It
can be seeded into a clean, firm sorghum
stubble, or it can be drilled into a firm prepared
seedbed. Seeding early in spring has proven
moat successful.
Windbreaks and environmental plantings are
generally well suited to this soil. Cultivation to
control competing vegetation should be
continued for as many years as possible
following planting. Trees that are best suited and
have good survival are Rocky Mountain juniper,
eastern redcecdar, ponderosa pine, Siberian
elm, Russian-olive, and hackberry. The shrubs
best suited are skunkbush sumac, lilac, Siberian
peashrub, and American plum.
Wildlife is an important secondary use of this
soil The cropland areas provide favorable habitat
for ring-necked pheasant and mourning dove.
Many nongame species can be attracted by
establishing areas for nesting and escape cover.
For pheasants, undisturbed nesting cover is
essential and should be included in plans for
habitat development, especially in areas of
intensive agriculture. Range-land wildlife, for
example, the pronghom antelope, can be
attracted by developing livestock watering
facilities, managing livestock grazing, and
reseeding where needed.
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