HomeMy WebLinkAbout20062938.tiff Attachment to USR Application - E%A
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.
1—Altvan loam, 0 to 1 percent slopes.This is Tree and shrub plantings and undisturbed
a deep,well drained soil on terraces at nesting cover would enhance openland wildlife
elevations of 4,500 to 4,900 feet. It formed in old populations,
alluvium deposited by the major rivers, Included This Altvan soil has fair to good potential for
in mapping are small areas of soils that show urban and recreational development.The chief
evidence of poor drainage. Also included are limiting soil features for urban development are
small, long and narrow areas of sand and gravel the shrink-swell potential of the subsoil as it wets
deposits. and dries and the rapid permeability of the sand
Typically the surface layer of the Altvan soil and gravel substratum. Septic tank absorption
is grayish brown loam about 10 inches thick, The fields function properly, but in places the
subsoil is brownand light yellowish brown clay substratum does not contain enough fines to
loam and sandy clay loam about 15 inches thick. properly filter the leachate. Sewage lagoons
The substratum is calcareous loamy sand about require sealing. Lawns, shrubs, and trees grow
6 inches thick over gravelly sand. well. Capability subclass Its irrigated.
Permeability and available water capacity
are moderate. The effective rooting depth is 20
to 40 inches. Surface runoff is slow, and the 8—Ascalon loam, 0 to 1 percent slopes. This
erosion hazard is low. is a deep, well drained soil on terraces at
This soil is used almost entirely for irrigated elevations of 4,500 to 4,900 feet. It formed in
crops. It is suited to all crops commonly grown in alluvium deposited by the major rivers in the
the area, including corn, sugar beets, beans, survey area. Included in mapping are small
alfalfa, small grain, potatoes, and onions. An areas where sand and gravel are within a depth
example of a suitable cropping system is 3 to 4 of 60 inches. Also included are small areas of
years of alfalfa followed by corn, corn for silage, soils that have a clay loam subsoil.
sugar beets, small grain, or beans.The high clay Typically the surface layer of this Ascalon soil is
content and the rapidly permeable substratum brown loam about 10 inches thick. The subsoil is
slightly restrict some crops. brown and yellowish brown sandy clay loam about
All methods of irrigation are suitable, but 15 inches thick. The substratum to a depth 60
g inches is calcareous sandy loam.
furrow irrigation is the most common. Proper Permeability is moderate. Available water
irrigation water management is essential. capacity is high. The effective rooting depth is 60
Barnyard manure and commercial fertilizer are inches or more. Surface runoff is slow, and the
needed for top yields. erosion hazard is low.
Windbreaks and environmental plantings of trees This soil is used almost entirely for irrigated
and shrubs commonly grown in the area are crops. It is suited to all crops commonly grown in
generally well suited to this soil. Cultivation to the area, including corn, sugar beets, beans,
control competing vegetation should be continued alfalfa, small grain, potatoes, and onions.An
for as many years aspossible following planting.
Trees that are best suited and have good survival example of a suitable cropping system is 9 to 4
are Rocky Mountain juniper, eastern redcedar, years of alfalfa followed by corn, corn for silage,
ponderosa pine, Siberian elm, Russian-olive, and sugar beets, small grain, or beans. Few
hackberry.The shrubs best suited are skunkbush conservation practices are needed to maintain
sumac, lilac, Siberian peashrub, and American top yields.
plum. All methods of irrigation are suitable, but
This soil can produce habitat elements that furrow irrigation is the most common. Barnyard
are highly suitable for openland wildlife, including manure and commercial fertilizer are needed for
pheasant, cottontail, and mourning dove, Such top yields.
crops as wheat, corn, and alfalfa provide suitable Windbreaks and environmental plantings are
habitat for openland wildlife, especially pheasant,
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Y EXHIBIT
2006-2938 J
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 application.All methods of irrigation
suited are skunkbush sumac, lilac, Siberian are suitable, but furrow irrigation is the most
peashrub, and American plum. common. Barnyard manure and commercial fer-
Wildlife is an important secondary use of this tilizer are needed for top yields.
soil, The cropland areas provide favorable In nonirrigated areas this soil is suited to
habitat for ring-necked pheasant and mourning winter wheat, barley, and sorghum. Most of the
dove, Many nongame species can tie attracted acreage is planted to winter wheat. The
by establishing areas for nesting and escape predicted average yield is 28 bushels per acre.
cover. For pheasants, undisturbed nesting cover The soil is summer fallowed in alternate years to
is essential and should be included in plans for allow moisture accumulation. Generally
habitat development, especially in areas of precipitation is too low for beneficial use of
intensive agriculture. fertilizer.
This soil has good potential for urban and Stubble mulch farming, strip-cropping, and
recreational development. Increased population minimum tillage are needed to control soil
growth in the survey area has resulted in blowing and water erosion. Terracing also may
increased homesite construction. The chief be needed to control water erosion.
limiting soil features for urban development are The potential native vegetation on this range
the shrink-swell potential of the subsoil as it wets site is dominated by sand bluestem, sand
and dries and the limited ability of this soil to reedgrass, and blue grams. Needleandthread,
support a load. Septic tank absorption fields switchgrass, sideoata grams, and western
function properly, but community sewage wheatgrass are alto prominent. Potential
systems should be provided if the population production ranges from 2,200 pounds per acre in
density increases. Because of the moderately favor ble years to 1,800 pounds in unfavorable
rapid permeability of the substratum, sewage years. As range condition deteriorates, the sand
lagoons must be sealed. Lawns, shrubs, and bluestem, sand reedgrass, and switchgrass
trees grow well. Capability class I irrigated. decrease and blue grams, sand dropseed, and
sand sage increase. Annual weeds and grasses
47—Olney fine sandy loam, Ito 3 percent invade the site as range condition becomes
slopes. This is a deep,well drained soil on poorer.
plains at elevations of 4,600 to 5,200 feet. It Management of vegetation on this soil
formed in mixed outwash deposits. Included in should be based on taking half and leaving half
mapping are small areas of soils that have a of the total annual production. Seeding is
dark surface layer. Some small leveled areas are desirable if the range is in poor condition. Sand
also included. bluestem, sand reedgrasa, switchgrass, sideoats
Typically the surface layer of this Olney soil grams, blue grams, and pubescent wheatgrass
is grayish brown fine sandy loam about 10 are suitable for seeding. The grass selected
inches thick. The subsoil is yellowish brown and should meet the seasonal requirements of
very pale brown sandy clay loam about 14 livestock. It can be seeded into a clean,firm
inches thick.The substratum to a depth of 60 sorghum stubble, or it can be drilled into a firm
inches is very pale brown, calcareous fine sandy prepared seedbed. Seeding early in spring has
loam. proven most successful.
Permeability and available water capacity Windbreaks and environmental plantings are
are moderate. The effective rooting depth is 60 generally suited to this soil. Soil blowing, the
inches or more-Surface runoff is medium, and principal hazard in establishing trees and shrubs,
the erosion hazard is haw. can be controlled by cultivating only in the tree
In irrigated areas this soil is suited to all row and by leaving a strip of vegetation between
crops commonly grown in the area, including the rows. Supplemental irrigation may be needed
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at the time of planting and during dry periods.
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, and Siberian
peashrub.
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. Rangeland wildlife, for
example, the pronghorn antelope, can be
attracted by developing livestock watering
facilities, managing livestock grazing, and
reseeding where needed.
Rapid expansion of Greeley and the
surrounding area has resulted in urbanization of
much of the Olney soil.This soil has good
potential for urban and recreational
development. The only limiting feature is the
moderately rapid permeability in the substratum,
which causes a hazard of ground water
contamination from sewage lagoons. Lawns,
shrubs, and trees grow well. Capability subclass
Ile irrigated, IVe nonirrigated; Sandy Plains
range site.
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