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6UMMIT COUNTY AREA, COLORADO
<br />about 34 degrees F, and the frost-free season is 30 to 40
<br />days. The Frisco soil makes up about 55 percent of this
<br />complex, and the Peeler soil makes up about 35 percent.
<br />Included in mapping and making up 10 percent of the
<br />acreage are small areas of Grenadier, Muggins, and Anvik
<br />soils; Cumulic Cryaquolls; and Rock outcrop.
<br />Typically, the surface of the Frisco soil is covered by a
<br />duff layer of needles and twigs about 3 inches thick. Below
<br />that is a leached layer of very pale brown sandy loam
<br />about 16 inches thick. The subsoil is light yellowish brown
<br />very stony sandy clay loam about 51 inches thick. The
<br />substratum is light yellowish brown very stony sandy
<br />clay loam to a depth of 80 inches or more.
<br />The Frisco soil has moderate permeability and medium
<br />available water capacity. The effective rooting depth is 60
<br />inches. Surface runoff is medium. The hazard of wind ero-
<br />sion is slight, and the hazard of water erosion is
<br />moderate.
<br />Typically, the surface of the Peeler soil is covered by a
<br />duff layer of needles and twigs about 3 inches thick.
<br />Below that is a leached layer of very pale brown sandy
<br />loam about 15 inches thick. Next is a layer of very pale
<br />brown and yellowish brown cobbly sandy clay loam about
<br />7 inches thick. The subsoil is light yellowish brown and
<br />pale broK'n cobbly sandy clay loam about 33 inches thick.
<br />The substratum is light yellowish brown cobbly Gght
<br />sandy clay loam to a depth of 60 inches or more.
<br />The Peeler soil has moderate permeability and high
<br />available water capacity. The effective rooting depth is 60
<br />inches. Surface runoff is medium. The hazard of wind ero-
<br />sion is slight, and the hazard of water erosion is
<br />moderate.
<br />Most of the acreage of this complex is woodland that is
<br />used for recreation, wildlife, and timber production. A
<br />cold climate and a short growing season limit the produc-
<br />tion of introduced grasses and wood crops.
<br />The dominant native vegetation consists of lodgepole
<br />pine, subalpine fir, Engelmann spruce, and a sparse un-
<br />derstory of grasses, shrubs, and forbs.
<br />The Frisco and Peeler soils are suited to the production
<br />of lodgepole pine; 10,200 board feet of merchantable
<br />timber can be produced from afully-stocked, even-aged
<br />stand of 80-year-old trees. Thinning operations produce
<br />poles for fences, corrals, and power lines. There are no
<br />restrictions on normal timber harvest, but care should be
<br />taken to prevent the erosion of skid trails and access
<br />roads.
<br />Excessive slope and large stones are the most limiting
<br />soil properties to be considered in the design of access
<br />roads and recreation homesite subdivisions. Snow removal
<br />becomes an increasingly greater problem as more homes
<br />are built. Slope stabilization is difficult even where homes
<br />are constructed on nearly level pads. Surface runoff
<br />resulting from snowmelt increases the erasion hazard, but
<br />establishing a stand is difficult. Homes should be
<br />designed to utilize existing slope and keep foundation cuts
<br />to a minimum. Roads should be designed to keep cut and
<br />ill slopes to a minimum and provide drainage outlets for
<br />excessive snowmen. Excavations and cuts and fills are
<br />difficult because of large stones throughout the profile.
<br />All-weather asphalt surfaces are impractical unless provi-
<br />sions are made to offset frost action.
<br />Woodland wildlife includes mule deer, elk, blue grouse,
<br />snowshoe hare, white-tailed ptarmigan, yellow-bellied
<br />marmot, and chipmunks. The natural migration of deer
<br />and elk herds has been disturbed in many area. now used
<br />for recreation homesite subdivisions. Capability subclass
<br />Vle.
<br />5F-Frisco-Peeler complex, 25 to 65 percent elopes.
<br />These are deep, well drained, steep to very steep soils on
<br />mountainsides xnd ridges in the south-central part of the
<br />survey area. They formed in glacial drift derived from a
<br />variety of rocks. Elevation is 8,500 l0 11,000 feet. The
<br />average annual precipitation is about Y1 inches, the
<br />average annual air temperature is about :34 degrees F,
<br />and the frost-free season is about 3U to tiU days. The
<br />Frisco soil makes up about ti0 percent of this complex,
<br />and the Peeler soil makes up about 30 percent. Included
<br />in mapping and making up about lU percent of the acre-
<br />age are small areas of Grenadier, Muggins, xnd Leadville
<br />soils; Cumulic Cryaquolls: and Rock outcrop.
<br />Typically the surface of the Frisco soil is covered by a
<br />duff layer of needles and twigs about 3 inches thick.
<br />Below that is a leached layer of very pale brown sanely
<br />loam about 16 inches thick. The subsoil is light yellowish
<br />brown very stony sandy clay loam about 51 inches thick.
<br />The substra:,lm is light yellowish brown very stony sandy
<br />clay loam to a depth of SO inches or more.
<br />The Frisco soil has moderate permeability and medium
<br />available water capacity. The effective rooting clepth is 60
<br />inches. Surface runoff is medium. The hazard of wind ero-
<br />sion is slight, and the hazard of water erosion is high.
<br />Typically, the surface of the Peeler soil is covered by x
<br />duff layer of needles and twigs about 3 inches thick.
<br />Below that is a leached layer of very pale brown sanely
<br />loam about 15 inches thick. Next is a layer of very pale
<br />brown and yellowish brown cobbly sandy clay loam about
<br />7 inches thick. The subsoil is light yellowish brown and
<br />pale brown cobbly sandy clay loam about 33 inches thick.
<br />The substratum is light yellowish brown cobbly light
<br />sandy clay loam to a depth of 60 inches or more.
<br />The Peeler soil has moderate permeability and high
<br />available water capacity. The effective rooting depth is 60
<br />inches. Surface runoff is medium. The hazard of wind ero-
<br />sion is slight, and the hazard of water erosion is high.
<br />Most of the acreage of this complex is woodland that is
<br />used for recreation, wildlife, and timber production. A
<br />cold climate and a short growing season limit the produc-
<br />tion of introduced grasses and weed crops.
<br />The dominant native vegetation consists of lodgepole
<br />pine, subalpine fir, Engelmann spruce, xnd a sparse un-
<br />derstory of grasses, shrubs, and forbs.
<br />The Frisco and Peeler soils are suited to the production
<br />of lodgepole pine; 10,200 board feet of merchantable
<br />timber can be produced from afully-stocked, even-aged
<br />stand of 80-yearold trees. Thinning operations produce
<br />
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