06032
<br />Banks and Gesso, LLC
<br />99-Nunn clay loam, / to 8 percent elopes. This
<br />deep, gently sloping end motleretely sloping, well
<br />drained soil is on alluvial fens and toe slopes. II formed
<br />In mixetl clayey allwlum. Elevaton ranges from about
<br />5,300 to 6,400 feet. Average annual precipltetion ranges
<br />from about 14 to 17 Inches, average annual air tempera-
<br />ture is about 47 degrees F, and average frost-free period
<br />is about 135 days.
<br />Included with this soil in mapping are small areas of
<br />Ascalon Bandy loam and Kutch clay loam that have 4 to
<br />e percent slopes.
<br />Typically, the surtace layer Is grayish brown clay loam
<br />about a inches thick. The subsoil is greyish brown heavy
<br />Clay Idflm, Clay, end silty Clay to a tlepth of about 40
<br />inches thick. The substratum is light brownish grey sandy
<br />loam to a depth of about 55 inches and light olive brown
<br />silty clay to a tlepth of 60 inches.
<br />Permeability is slow, end eveileble water capacity is
<br />high. Surtace runoff is metlium, end the hazard of ero-
<br />sion is moderate. Gullies have formed along some drein-
<br />ageweys.
<br />This soil is used mainly for grazing. A few areas are
<br />used for nonirrigeted cropland, and wheat is the mein
<br />crop. The estimated yield for wheat is about 16 bushels
<br />per acre. Many areas Met were previously cropped have
<br />been seeded to grass. This soil is well suited to grazing
<br />because of slow permeability end the moderate hazard
<br />of erosion.
<br />Rangeland vegetation Is mainly western wheetgrass,
<br />blue grams, green needlegrass, end fourwing saltbush.
<br />Following prolongetl overgrazing, native bluegresses,
<br />annual grasses, end weeds increase. Contour furrowing
<br />ar pitting aids in the recovery of depleted vegetation by
<br />reducing runoff antl Increasing water infiltration. Areas
<br />that have dense stands of pricklypear or rebhitbrush can
<br />be managed by chemical control of these species.
<br />On nonimigated cropland, the mein concerns of man-
<br />agement are conserving moisture and protecting the soil
<br />from erosion. Stubble mulch tillage end Incorporating
<br />crop residue in end on the surface improve soil glth end
<br />protect the soil from erosion. Terracing end contour
<br />farming are needed to reduce surtace runoff end con-
<br />serve water. Chiseling or subsoiling improve water pene-
<br />tration. Tillage pans form easity if this soil is tilled when
<br />wet. More intensive conservation practices ere essential
<br />on this soil because of slope. Tillage operations need to
<br />be kept to a minimum.
<br />This soil is well suited to windbreaks end environmen-
<br />tal plantings. Summer fellow, a year prior to plandng:
<br />supplemental irrigation during planting end early stages
<br />of growth; and continuetl cultivation for weed control ere
<br />needed to insure the establishment end survival of plant-
<br />ings. well suited trees that survive bast are Rocky Moun-
<br />tain juniper, eastern retlcedar, ponderosa pine, Siberian
<br />elm, Russian-olive, and hackberry. The best suited
<br />shrubs are skunkhush sumac, American plum, lilac, and
<br />Siberian peashrub.
<br />The limiting soil features for homesites and other
<br />urban uses are slow permeability end high shrink-swell
<br />potential. Special designs for buildings and roads are
<br />needed to offset these limitations. Special sewage sys-
<br />tems, such as enclosed tanks that can be pumped out
<br />penodicalty, are needetl. Septic tank absorption fields
<br />will not function properly because of the slow permeabil-
<br />ity.
<br />This soil i9 in capahiliry subclass IVs, nonirtigeted.
<br />39-Renohlll-Louvlara complex, a to 25 DarceM
<br />alol»a. These moderatey tleep and shallow, motleretety
<br />sloping to moderately steep, well drained sails are on
<br />upland hills, ridges, antl valley sitle slopes. Elevation
<br />ranges from 5,300 to 8,400 feet. Average annual precipi-
<br />tation ranges from about 14 to 17 inches, antl average
<br />annual air temperature is about 47 degrees F. The Reno-
<br />hlll soil makes up about 40 percent of the unit end the
<br />Louviers soil about 30 percent. The Renohlll soil is on
<br />the valley side slopes end the wider ridgetops. The Lou-
<br />viers soil is generally on the narrow ritlgetops, slope
<br />breaks, and knobs but may be found anywhere in the
<br />mapped area.
<br />Included with this complex in mapping, and making up
<br />about 30 percent of the unit ere Cushman loam end
<br />Nunn clay loam that have 4 to 6 percent slopes. Also
<br />included are steep, badly eroded areas that have very
<br />sparse vegetation and contain an intricate maze of
<br />narrow ravines, sharp crests, end pinnacles.
<br />The Renohlll soil is moderately tleep end formed in
<br />residuum weathered from interbedded sandstone end
<br />shale. Typically, the surtace layer is grayish brown clay
<br />loam about 2 inches thick. The subsoil is greyish brown,
<br />light olive brown, antl light yellowish brown clay antl clay
<br />loam. It is calcareous in the lower part. Below that is
<br />interbedded sandstone end clay shale at a depth of
<br />about 24 inches.
<br />Permeability is slow, end available water capacity is
<br />moderate. The etteaive rooting tlepth i9 20 to 40 Inches.
<br />Surface runoff is rapid, and the hazard of erosion is high.
<br />The Louviers soil is shallow end formed In material
<br />weathered from noncalcareous shale. Typically, the sur•
<br />face layer is light brownish gray clay about 5 inches
<br />thick. The subsbatum Is greyish brown clay to a depth of
<br />about 14 inches. Below that is clay shale.
<br />Permeability is slow, and available water capacity is
<br />low. The eHecgve rooting depth is 10 to 20 inches.
<br />Surface runoff is rapid, end the hazard of erosion is high.
<br />These soils are used mostly for grazing. A few open
<br />clay mines are in this mapped area.
<br />Rangeland vegetation is mainly western wheetgrass,
<br />little bluestem, needleandthread, blue grams, green
<br />naedlegrass wintertel, and sideoats grams. Following
<br />prolonged overgrazing, native bluegresses, annual
<br />grasses, end weeds increase. Contour furrowing or pit-
<br />ting aids in the recovery of depleted vegetation on these
<br />soils by reducing runoff and increasing water infiltration.
<br />Areas that have dense stands o1 pricklypear or rabbit-
<br />brush can be managed by chemical control of these
<br />species.
<br />These soils are generally unsuitetl to windbreaks or
<br />environmental plantings. Onsite investigation is generally
<br />needed to determine which special planting precdces are
<br />needetl to insure survival.
<br />These soils have severe limitations for the constmc-
<br />gon of homeskes, roads, and other urban developments
<br />because of the depth to bedrock, slow permeability, high
<br />shrink-swell potential, low strength, and slopes. Intensive
<br />and costly measures are nestled to minimize these limit-
<br />ing soil properties.
<br />This complex is in cepebiliry.subclass Vlle, noninigat-
<br />ed.
<br />The Denver Brick Company
<br />Kiowa Clay Mine
<br />January 2007
<br />Page 19
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