PERMFILE114566

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: Exhibit 70 Appendix M Part 3
• Media Type: D
• Archive: No

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material that was weathered in place from sandstone
and interbedded shale.
Typically the surface layer of the Beenom soil is gray-
ish brown loam about 4 inches thick. The subsoil is dark
brown clay loam about 5 inches thick. The substratum is
very pale brown channery loam. Sandstone is at a depth
of about 14 inches.
In the Beenom soil, permeability is moderate and avail-
able water capacity is low. Effective rooting depth is
about 14 inches. Surtace runoff is medium to rapid. The
hazard of erosion from wind is slight and from water is
moderate to high.
On the Beenom soil the native vegetation consists
mainly of Gambel oak, serviceberry, and big sagebrush.
Wheatgrasses, pine needlegrass, and needleandthread
are common grasses.
The Absarokee soil is moderately deep and well
drained and overlies bedrock at a depth of 20 to 40
inches. It formed in locally transported sediment derived
from sandstone and interbedded shale.
Typically the Surtace layer of the Absarokee soil is
dark grayish brown loam about 7 inches thick. The sub-
soil is brown clay about 18 inches thick. The substratum
is light brown channery clay loam. Sandstone is at a
depth of about 30 inches.
In the Absarokee soil, permeability is moderately slow
and available water capacity is moderate. Effective root-
ing depth is about 30 inches. Surtace runoff is medium
to rapid. The hazard of erosion from wind is slight and
from water is moderate to high.
On the Absarokee soil the native vegetation consists
mainly of Gambel oak, serviceberry, big sagebrush, and
snowberry. Wheatgrasses, pine dropseed, needlegrass,
and needleandthread are common grasses.
Most areas of this complex are in native vegetation
and are used for limited grazing by livestock and wildlife
and for recreational purposes.
The potential plant community on the Beenom soil
consists mainly of bluebunch wheatgrass and other
wheatgrasses, muttongrass, and Junegrass. As range
condition deteriorates, the wheatgrasses, muttongrass,
and Junegrass decrease, (orbs and woody shrubs in-
crease, and undesirable weeds and annual plants invade
and become more abundant.
The potential plant community on the Absarokee soil
consists mainly of Gambel oak, mountain brome, nod-
ding brome, slender wheatgrass, and elk sedge. As
range condition deteriorates, mountain brome, nodding
brome, slender wheatgrass, and elk sedge decrease,
fortis and woody shrubs increase, and undesirable
weeds and annual plants invade and become more
abundant.
Seeding is advisable if range is in poor condition.
Steep slopes and surface stoniness are limitations in
some areas. Slender wheatgrass, western wheatgrass,
and bluebunch wheatgrass are suitable for seeding.
Grasses that meet the seasonal requirements of live-
SOIL SURVEY
stock should be selected. Where soil properties are fa-
vorable, preparing a seedbed and drilling the seed help
to obtain the best results. Good pasture and range man-
agement is needed to maintain the grasses. On some
sites, control of competing shrubs is required to improve
range condition.
These soils are used for winter range by mule deer
and elk. Some important plant species which can be
managed for optimum production are bitterbrush, moun-
tainmahogany, Gambel oak, serviceberry, and elk sedge.
Berry-producing shrubs are used by black bear. Areas of
this soil provide habitat for Merriam turkey, blue grouse,
and band-tailed pigeon. In favorable years mature
Gambel oaks produce acorns, which are used by Mer-
riam turkey.
If these soils are used for urban development, the
main limitations are depth to bedrock, shrink-swell poten-
tial, and slope. If they are used for septic tank absorption
fields, permeability is also a limitation. The limitations
can be overcome by proper design and construction
methods.
These soils are in capability subclass Vle, nonirrigated.
13-Beenom-Absarokee association, 20 to 60 per-
cent slopes. These hilly, steep, and very steep soils are
on mountain side slopes. Elevation ranges from 6,800 to
8,300 feet. Average annual precipitation is about 17
inches, average annual air temperature is about 43 de-
grees F, and the average frost-free season is about 100
days.
The Beenom soil makes up about 50 percent of the
association. It is on the upper part of the slope and on
ridgetops. The Absarokee soil makes up about 30 per-
cent of the association. It is in a position lower on the
slope than the Beenom soil and is also in swales.
Included with these soils in mapping are a few small
areas of Kech, Progresso, and Work soils. Also included
are rock outcrops, very shallow soils, and deep, stony
soils. Included areas make up 20 percent of the associ-
ation. In some small areas the surface layer is clay Icam
or sandy loam.
The Beenom soil is shallow and well drained and over-
lies bedrock at a depth of 10 to 20 inches. It formed in
material that was weathered in place from sandstone
and interbedded shale.
Typically the surface layer of the Beenom soil is gray-
ish brown loam about 4 inches thick. The subsoil is dark
brown clay loam about 5 inches thick. The substratum is
very pale brown channery loam. Sandstone is at a depth
of about 14 inches.
In the Beenom soil, permeability is moderate and avail-
able water capacity is low. Effective rooting depth is
about 14 inches. Surface runoff is rapid. The hazard of
erosion from wind is slight and from water is high.
On the Beenom soil the native vegetation consists
mainly of Gambel oak, serviceberry, big sagebrush, and
snowberry. Wheatgrasses, pine needlegrass, and need-
leandthread are common grasses.