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SITE DESCRIPTION (con •
<br />Exhibit B
<br />SOILS INFORMATION
<br />Nunn Series
<br />The Nunn series consists of deep, well-drained soils.
<br />These soils formed on uplands in ]cesa and loamy
<br />residuum weathered from sandstone. The elope ie 0
<br />to 9 percent, and elevation is 6,800 to 6,700 feet. The
<br />average annual precipitation le 16 inches. The average
<br />annual temperature is 60° F, and the frost-free season
<br />is 116 to 146 days. The native vegetation ie mainly
<br />greases of the foothills.
<br />In a representative profile the surface layer is
<br />grayish-brown clay loam about 6 inches thick. The
<br />subsoil is brown and pale-brown clay loam and heavy
<br />clay loam about 28 inches thick. The underlying ma-
<br />terial ie pale-brown loam that extends to a depth of
<br />60 inches or more.
<br />Permeability la slow, and the available water
<br />capacity is high. The surface layer ie mildly alkellne,
<br />and the underlying material is moderately alkaline. The
<br />root zone extends to a depth of 60 inches or more.
<br />These soils are used for grazing and for dlyland crops.
<br />Representative profile of Nunn clay loam, 0 to 6
<br />percent elopes, In native grace, 100 feet east and 0.4
<br />mile north of the southwest corner of sec. 27, T. 22 S.,
<br />R. 67 W.
<br />AI-0 to a Inches, nylsh-brown (IOYR 6/2) clay loam,
<br />very dark grsy~eh brown (lOYR a/2) when moist;
<br />weak, floe, granular etzuetnre; ellghtly hard, very frl-
<br />abla; slightly etleky and plaatie; neutral; clear, emoolh
<br />boundary.
<br />Bl-a !0 9 lnehee, brown (lOYR 6/3 clay loam, dark brown
<br />(lOYA a/a) when moist; moderate, floe, auhangular
<br />blocky etruelure• ellghtly herd, friable• etleky and
<br />plaatie; thin pa~chy, clay films on vart{eal taco of
<br />peda• neutrs{• clear, smooth boundary
<br />B21h9 to 18 Inc~ee, brown (lOYR 6/a) heavy day loam,
<br />dark brown (lOYR a/a) when mols!• moderate, medium,
<br />prlematlc structure parting to etiong, medium enb-
<br />engular blocky; vary herd, firm; sticky end plaatie;
<br />eontinuoue, clay alms oa peda; mildly alkellne; clear,
<br />emoolh boundary.
<br />B22~1a to 28 lnehee brown (lOYR 6/9) heavy clay loam,
<br />dark brown (IOY~t d/a) when motet; moderate, madlum,
<br />prfemstic structure parting W moderate, madlum, eub-
<br />angnlsr blocky; very hard, firm; etleky and plaatie;
<br />thin, nearly tontlnaoos, elsy Alms on pads; mildly elks-
<br />Ilne• clear, smootb boundary.
<br />Bae^-23 to 92 lnehee palo-brown (lOYR 9/a) clay loam,
<br />deck brown (101/R 4/a) when motet; weak coerce
<br />subangular blocky etrueture; hard, friable; et~cky and
<br />plastic; ealcareoua; common fine and medium filaments
<br />and colt maasee of lime; moderately alkellne; clear,
<br />smooth boundary.
<br />C-92 to 80 Inches, pale-brown (IOYR 9/a) loam, dark
<br />brown (IOYR d/S) when moist; weak, coane, pprismatic
<br />structure; ellghtly hard, vary friable; ellghtly etleky
<br />and ellghtly pplaetle; strongly talcareoue• common floe
<br />end medium Iliamenta and soft msaeee aj lime; moder-
<br />ately alkaline.
<br />The Al horizon le loam, stony loam, or clay loam 9 to 9
<br />lnehee thick. The B horizon ie 18 to 84 Inches thick. Cracks
<br />that are one-fourth inch wide extend from the eur[ece into
<br />the B horizon In places where the Boil dries out. Sandstone
<br />le st • depth of d feet or more.
<br />NnI)•-Nunn stony loam, 3 to 9 percent slopes. This
<br />soil is in the foothills in the southwestern part of
<br />Pueblo County and the northesetern part of Custer
<br />County, The areas are irregularly shaped and cover as
<br />much as 200 acres. This soil has a profile similar to the
<br />one described as representative of the series, but
<br />unevenly scattered stones cover as much ae 3 percent
<br />of the surface.
<br />Included with this eoil in mapping are areas of
<br />Nederland stony loam and Denver clay loam that make
<br />up about 6 percent each of the acreage. Also included
<br />are a few small slickpots.
<br />This soil has high potential for wildlife use if the
<br />habitat can be improved. Stones make tillage difficult,
<br />but the soil can be used for hay or improved pasture.
<br />The native vegetation is mainly western wheatgrass,
<br />blue grams, junegrase, and aide-oats grams. Capability
<br />unit iVe-8, nonirrigated; Loamy Foothills range site.
<br />E%CEAPT FROH SOIL SURVEY OF PUEBLO AREA COLORADO A U.S. DEPT. OF AGRICULTURE, SOIL
<br />CONSERVATION SERVICE PUBLICATION
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