PERMFILE43923

• Permit No: M1999022
• IBM Index Class Name: Permit File
• Doc Date: 4/8/1999
• From: CRITES CONSTRUCTION & EXCAVATION
• Media Type: D
• Archive: No

46

needed to prevent range deterioration and to promote
the growth and increase of more desirable plant species.
This soil supports habitat for such wildlife as antelope,
cottontail, coyote, and jackrabbit. 1=orage production is
typically low, and proper livestock grazing management
is necessary if wildlife and livestock share the range.
If this soil is irrigated, wildlife can be encouraged to
make use of small grain stubble and other crop residue
for food and cover.
This soil is suited to homesite development. Garden
level basements are above the water table, but
underground basements are not. In places, excavation
for houses and access roads exposes material that is
highly susceptible to soil blowing. If the density of
housing is moderate to high, community sewage systems
are needed to prevent contamination of water supplies
as a result of seepage from onsite sewage disposal
systems.
This soil is in capability subclasses Ille, irrigated, and
Vlle, nonirrigated. It is in the Valley Sand range site.
46-Medano fine sandy loam. This deep, nearly
level, poorly drained soil is on flood plains on alluvial
valley floors. Elevation is 7,500 to 8,400 feet. The soil
formed in alluvium. The average annual precipitation is
about 9 inches; the average annual air temperature is
about 42 degrees F; and the average annual frost-free
season is about 90 days.
Included in this unit are some small areas of Hagga
loam, Gerrard loam, and Acasco clay loam.
Typically, the surface layer of this Medano soil is
grayish brown fine sandy loam about 19 inches thick.
The upper part of the underlying material is light
brownish gray loamy fine sand about 11 inches thick.
The lower part to a depth of 60 inches is brown loamy
fine sand.
Permeability is moderately rapid. Effective rooting
depth is limited by a high water table that fluctuates
between depths of 1.5 and 3.0 feet most of the summer.
Surface runoff is slow. The hazard of soil blowing is
moderate. Rare flooding occurs in low areas in some
years.
This soil is used principally for range, wildlife habitat,
and limited acreages of alfalfa or hay crops. The
sprinkler method of irrigation is suitable for most crops
on this soil. Soil drainage and management of irrigation
water are needed to prevent salt buildup, waterlogging,
and water loss.
The potential natural vegetation on this Medano soil is
dominated by western and slender wheatgrasses on the
drier parts and by tufted hairgrass, bluejoint reedgrass,
and Nebraska sedge on the wetter parts. If the range
condition deteriorates, the proportion of the more
desirable species decreases, and that of less desirable
species increases. Weeds, annuals, and black
greasewood increase in abundance as the range
declines.
Soil Survey.
Establishing rangeland seedlings on this soil is difficult
because of the low rainfall. Renovating, deferred grazing,
rotational grazing, cross fencing, and brush control help
prevent range deterioration.
This soil supports habitat for such wildlife as deer,
jackrabbit, and cottontail. Wildlife on this soil can best be
aided by use of proper livestock grazing practices. In
some places, wetland wildlife habitat can be improved by
development of shallow water areas and pothole
blasting; however, permanent availability of water is a
problem that must be considered.
This soil is poorly suited to homesite development.
The main limitations are flooding, wetness, and low load-',
bearing strength (2~. Soil drainage, flood control, and
modification of designs for roads and buildings are
necessary to offset these limitations.
This soil is in capability subclasses IVw, irrigated, and
Vw, nonirrigated. It is in the Wet Meadow range site.
47-Medano-Hapney complex. These nearly level,
poorly drained and well drained soils are on alluvial fans
and flood plains on alluvial valley floors. The soils
formed in alluvium. Elevation is 7,600 to 8,400 feet. The
average annual precipitation is about 8 inches; the
average annual air temperature is about 42 degrees F; ,
and the frost-free period is about 90 days.
Medano soils make up about 60 percent of this unit;
Hapney soils make up 30 percent; and inclusions of
Hooper clay loam, Gerrard loam, and San Luis sandy
loam make up the remaining 10 percent. ,
The Medano soils are deep, poorly drained soils on
flood plains and lower fans. Typically, the surface layer is
grayish brown fine sandy loam about 19 inches thick.
The upper part of the underlying material is light
brownish gray loamy fine sand about 11 inches thick.
The lower part of the underlying material to a depth of
60 inches or more is brown loamy fine sand.
Permeability in the Medano soils is moderately rapid.
Effective rooting depth is limited by a high water table
that fluctuates between depths of 1.5 and 2.0 feet most
of the summer. Surface runoff is slow, and the erosion
hazard is slight. Rare flooding occurs in low areas in
some years.
The Hapney soils are moderately well drained soils on
drier areas of flood plains and fans. Typically, the
surface layer is light gray clay loam about 2 inches thick.
Typically, the surface layer is light gray clay loam about
2 inches thick. The upper 18 inches of subsoil is gray
heavy clay loam. The lower 6 inches of subsoil is very
dark gray clay. The upper part of the substratum is light
brownish gray clay about 8 inches thick, and the lower
part of the substratum to a depth of 60 inches is light
olive gray clay loam. Some profiles have mottles in the
substratum. ,
Permeability is slow. Effective rooting depth is 60
inches. Available water capacity is high. Surface runoff is
slow, and the erosion hazard is slight. A fluctuating high