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Attachment to USR Application-W%SEY+-23-6n-66w
TARN E&P LP
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.
9—Ascalon loam, 1 to 3 percent slopes. This is essential and should be included in plans for
is a deep, well drained soil on terraces at habitat development, especially in areas of
elevations of 4,500 to 4,900 feet. It formed in intensive agriculture.
alluvium deposited by the major rivers in the This soil has good potential for urban and
survey area. Included in mapping are small recreational development. Increased population
areas where sand and gravel are within a depth growth in the survey area has resulted in
of 60 inches.Also included are small areas of increased homesite construction. The chief
soils that have a clay loam subsoil. limiting soil features for urban development are
Typically the surface layer of this Ascalon the shrink-swell potential of the subsoil as it wets
soil is brown loam about 10 inches thick. The and dries and the limited ability of this soil to
subsoil is brown and yellowish brown sandy clay support a load. Septic tank absorption fields
loam about 15 inches thick.The substratum to a function properly, but community sewage
depth of 60 inches is calcareous sandy loam. systems should be provided if the population
Permeability is moderate.Available water density increases. Because of the moderately
capacity is high.The effective rooting depth is 60 rapid permeability of the substratum, sewage
inches or more. Surface runoff is medium, and lagoons must be sealed. Lawns, shrubs, and
the erosion hazard is low. trees grow well. Capability subclass Ile irrigated.
This soil is used almost entirely for irrigated
crops. It is suited to all crops commonly grown in 24—Fort Collins loam, 1 to 3 percent slopes.
the area, including corn, sugar beets, beans, This is a deep, well drained soil on terraces and
alfalfa, small grain, potatoes, and onions.An plains at elevations of 4,500 to 5,050 feet. It
example of a suitable cropping system is 3 to 4 formed in alluvium modified by thin eolian
years of alfalfa followed by corn, corn for silage, deposits. Included in mapping are some leveled
sugar beets, small grain, or beans. Land areas and few small areas of a soil that is
leveling, ditch lining, and installing pipelines may calcareous at the surface.
be needed for proper water application. Typically the surface layer of this Fort
All methods of irrigation are suitable, but Collins soil is grayish brown loam about 7 inches
furrow irrigation is the most common. Barnyard thick. The subsoil is brown and very pale brown
manure and commercial fertilizer are needed for clay loam and loam about 17 inches thick. The
top yields. substratum to a depth of 60 inches is fine sandy
Windbreaks and environmental plantings of loam.
trees and shrubs commonly grown in the area Permeability is moderate.Available water
are generally well suited to this soil. Cultivation capacity is high. The effective rooting depth is 60
to control competing vegetation should be inches or more. Surface runoff is medium, and
continued for as many years as possible the erosion hazard is low.
following planting. Trees that are best suited and In irrigated areas this soil is suited to all
have good survival are Rocky Mountain juniper, crops commonly grown in the area, including
eastern redcedar, ponderosa pine, Siberian elm, corn, sugar beets, beans (fig. 5), alfalfa, small
Russian-olive, and hackberry. The shrubs best grain, potatoes, and onions.An example of a
suited are skunkbush sumac, lilac, Siberian suitable cropping system is 3 to 4 years of alfalfa
peashrub, and American plum. followed by corn, corn for silage, sugar beets,
Wildlife is an important secondary use of small grain, or beans. Land leveling, ditch lining,
this soil. The cropland areas provide favorable and installing pipelines may be needed for
habitat for ring-necked pheasant and mourning proper water applications.
dove. Many nongame species can be attracted All methods of irrigation are suitable, but
by establishing areas for nesting and escape furrow irrigation is the most common. Barnyard
cover. For pheasants, undisturbed nesting cover manure and commercial fertilizer are needed for
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2007-0039
top yields. is essential and should be included in plans for
In nonirrigated areas this soil is suited to habitat development, especially in areas of
winter wheat, barley, and sorghum. Most of the intensive agriculture. Rangeland wildlife, for
acreage is planted to winter wheat. The example, the pronghorn antelope, can be
predicted average yield is 28 bushels per acre. attracted by developing livestock watering
The soil is summer fallowed in alternate years to facilities, managing livestock grazing, and
allow moisture accumulation. Generally reseeding where needed.
precipitation is too low for beneficial use of This soil has good potential for urban and
fertilizer. recreational development. Road design can be
Stubble mulch farming, striperopping, and modified to compensate for the limited capacity
minimum tillage are needed to control soil of this soil to support a load. Capability subclass
blowing and water erosion. lie irrigated, IVc nonirrigated; Loamy Plains
The potential native vegetation is range site.
dominated by blue grama. Several mid grasses,
such as western wheatgrass and 32—Kim loam, 1 to 3 percent slopes. This is a
needleandthread, are also present. Potential deep, well drained soil on smooth plains and
production ranges from 1,600 pounds per acre in alluvial fans at elevations of 4,900 to 5,250 feet.
favorable years to 1,000 pounds in unfavorable It formed in mixed eolian deposit and parent
years.As range condition deteriorates, the mid sediment from a wide variety of bedrock.
grasses decrease; blue grama, buffalograss, Included in mapping are small areas of soils that
snakeweed, yucca, and fringed sage increase; have loamy sand underlying material.
and forage production drops. Undesirable weeds Typically the surface layer is brown and pale
and annuals invade the site as range condition brown loam about 12 inches thick. The upper 28
becomes poorer. inches of the underlying material is pale brown
Management of vegetation on this soil loom. The lower part to a depth of 60 inches is
should be based on taking half and leaving half pale brown fine sandy loam.
of the total annual production. Seeding is Permeability is moderate.Available water
desirable if the range is in poor condition. capacity is high. The effective rooting depth is 60
-- Sideoats grama, little bluestem, western inches or more. Surface runoff is medium, and
wheatgrass, blue grama, pubescent wheatgrass, the erosion hazard is low.
and crested wheatgrass are suitable for seeding. In irrigated areas this soil is suited to all
The grass selected should meet the seasonal crops commonly grown in the area, including
requirements of livestock. It can be seeded into corn, sugar beets, beans, alfalfa., small grain,
a clean,firm sorghum stubble, or it can be drilled potatoes, and onions.An example of a suitable
into a firm prepared seedbed. Seeding early in cropping system is 3 to 4 years of alfalfa
spring has proven most successful. followed by corn, corn for silage, sugar beets,
Windbreaks and environmental plantings of small grain, or beans. Land leveling, ditch lining,
trees and shrubs commonly grown in the area and installing pipelines may be needed for
are generally well suited to this soil. Cultivation proper water applications,.
to control competing vegetation should be All methods of irrigation are suitable, but
continued for as many years as possible furrow irrigation is the most common. Barnyard
following planting.Trees that are best suited and manure and commercial fertilizer are needed for
have good survival are Rocky Mountain juniper, top yields.
eastern redcedar, ponderosa pine, Siberian elm, In nonirrigated areas this soil is suited to
Russian-olive, and hackberry. The shrubs best winter wheat, barley, and sorghum. Most of the
suited are skunkbush sumac, lilac, Siberian acreage is planted to winter wheat and is
peashrub, and American plum. summer fallowed in alternate years to allow
Wildlife is an important secondary use of moisture accumulation. Generally precipitation is
this soil. The cropland areas provide favorable too low for beneficial use of fertilizer.
habitat for ring-necked pheasant and mourning Stubble mulch farming, striperopping, and
dove. Many nongame species can be attracted minimum tillage are needed to control soil
by establishing areas for nesting and escape blowing and water erosion. Terracing also may
cover. For pheasants, undisturbed nesting cover be needed to control water erosion.
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The potential native vegetation is dominated road construction is the limited capacity of this
by blue grama. Several mid grasses, such 3S soil to support a load. Septic tank absorption
western wheatgrass and needleandthread, are fields function properly, but community sewage
also present. Potential production ranges from systems should be provided if the population
1,600 pounds per acre in favorable years to density increases. Because of the permeability
1,000 pounds in unfavorable years.As range of the subatratum, sewage lagoons must bo
condition deteriorates, the mid grasses sealed. Lawns, shrubs, and trees grow well.
decrease; blue grama, buffalograss, snakeweed, Capability subclass He irrigated, IVe
yucca, and fringed sage increase; and forage nonimgated; Loamy Plains range site.
production drops. Undesirable weeds and
annuals invade the site as range condition
becomes poorer.
Management of vegetation on this soil
should be based on taking half and leaving half
of the total annual production. Seeding is
desirable, if the range is in poor condition.
Sideoats grama, little bluestem, western
wheatgrass, blue grama, pubcactint 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 most successful.
Windbreaks and environmental plantings of
trees and shrubs commonly grown in the area
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 redcedar, 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 arid 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.
This soil has good potential for urban and
recreational development Increased population
growth in the survey area has resulted in
increased homesite construction. The chief
limiting soil feature for urban development and
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