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k.XHIBIT B-1
<br />aecasox couxTr,na>~, col,oaaDo
<br />29
<br />ion grass, western wheatgrass, low rabbitb ah, Larand aerie's
<br />se 'ceberry, and big sagebrush. The mean a nual
<br />pr itation is 12 to 15 inches, the mean ann al air The Larand series consists of deep, well drained soils
<br />temp rature is 36° to 38° F, and the frost-fre season that formed in coarse textured glacial till. The soils
<br />is 30 40 days. are underlain by very gravelly sand at a depth of 24 to
<br />In a representative profile the surface Jaye is light b5 inches. They are on glacial terraces, fans, and
<br />brown h gray clay loam about 4 inches t ick. The moraines between elevations of 8,b00 and 10,000 feet.
<br />upper p rt of the subsoil is pale brown light lay about Slopes are 3 to 40 percent. The native vegetation is
<br />3 inches thick, and the lower part is brow clay about mainly lodgepole pine, spruce, and fir and a sparse
<br />2b inches thick. Shale is at a depth of about 2 inches. understory of oregongrape, elk sedge, vaccinium, kin-
<br />Permea ility is stow, and available w ter capacity nikinnick, and heartleaf arnica. The mean annual pre-
<br />is modern cipitation is 18 to 2b inches, the mean annual air
<br />These so are used mainly for grazi g, Some areas temperature is 34° to 36° F, and the frost-free season
<br />are irrigate and used for grass hay. is 25 to 30 days,
<br />Represen five profile of Kather cl y loam, 5 to 20 In a representative profile the surface layer is light
<br />percent slope , in native grass, 1,180 eat east and 325 gray fine sandy loam about 16 inches thick. The aub-
<br />feet north of outhwest corner of se . 3, T. 6 N., R. 81 soil is light yellowish brown very gravelly sandy clay
<br />W,; loam about 16 inches thick, The underlying material is
<br />light yellowish brown very gravelly sand.
<br />Al-0 to 4 i es• light brownish y (lOYR s/2) clay permeability iB moderate, and available water ca-
<br />loam, dar~C grayish bm (lOYR 4/2) moist; acit is low.
<br />etmng fine granular afro tore; soft, very friable P Y
<br />slightl slit cl y ana sl;gh plastic; many fine and These soils are used mainly for producing timber,
<br />med;um Dora; mildly al ins; clear smooth bound- for wildlife habitat, and for recreation.
<br />B1--4 to~nches pale brown lOYR 6/3) light clay, dark Representative profile of I.arand fine sandy loam, 3 to
<br />bmwn (1 YR 4/3) ist; moderate medium sub- 25 percent slopes, in timber, 400 feet east and 400 feet
<br />angular bl kyy struct parting to fine subangular' north of center of sec. 3, T. 7 N., R. 77 W.:
<br />blocky; sli tly ha very friable, sticky and piss- Ol-2 inches to 1 inch• undecomposed organic material,
<br />tic; few fin and edium roots; few thin patchy mostly needles, ~atk, and twigs.
<br />clay Shna o pads and in pores; mildly alkaline; 02-I inch to 0; artially dernmposed organic material
<br />clear smooth b° ary similar to that of horizon above.
<br />B2b--7 to 28 inches; ro n (lOYR 6/3) clay, dark brown p~0 to 10 inches; light gray (lOYR 7/2) fine sandy loam,
<br />(lOYR 4/3) o t; moderate coarse and medium pate bmwn (lOYR 6/3) moist; moderato medium
<br />prismatic afro parting to coarse and medium plat structure pparting to fine granular; soft, very
<br />an lar block extremely hard, very firm, sticky friable, nonsticky and nonplactic; few medium
<br />and plastic; fine roots; moderate continuous roots• medium acid; gradual wavy bo~n~~~y
<br />clay films o pe a and in pores; mildly alkaline; p&8-10 to 16 inches; mixed light gray (lOYR 7/2) end
<br />gradual sm t6 undaryry light yellowish brown (lOYR 6/4) heavy Sne sandy
<br />BS-28 to S2 inches bm (lOYR 6/S) clay, dark brown loam pale brown (l0Y 6/3) and yellowish brown
<br />(lOYR 4/ mois weak coarse angular blocky (lOY~R 6/4) moist; weak fine aubangular blocky
<br />atrueture• extreme hard, very firm, sticky and structure parting to fine granular; slightly hard,
<br />plastic; f w thin by clay films on pads and in ver friable, nonsticky and nonelastic; few fine
<br />some po s; mildly lkaline; gradual wavy bound- andymedium mots; few thin patchy clay films on
<br />ary' some pads; b men 1 and cobbles; horizon
<br />Cr~.92 to 40 • es; noncalca ua shale. consists of ma an nodu ea of material similar
<br />The profile s generally non Icareous to a depth of 40 to that of underlying horizon embedded in light
<br />inches or mo , but a thin disco tinuous calcareous horizon - colored matrix similar to that of overlying horizon;
<br />is just above rock in some pia es, Content of coarse frag- slightly acid; diffuse wavy boundary.
<br />menu rang a from 0 to lb p~rc t. Reaction ranges from B2t---16 to 28 inches; tight yellowish brown (IOYR 6/4)
<br />neutral to ' dly alkaline. The t horizon is heavy clay verryy gravelly sandy clay loam, yellowish brown
<br />loam or 1• ht clay. (lOYR 6/4) moist; moderate medium subangular
<br />blocky structure• very hard, friable, slightly sticky
<br />KaF~ firer clay loam, S to 2U rcent 6lopea. Tills and slightly plastic; few fine and coarse mots; thin
<br />8011 18 0 uplands and Valley Sl ea throughout the patchy clay films on peda, in pores, on underside
<br />Survey 8r a. of coarse fragments, and as bndgea between sand
<br />grains; 0 ereent ave and cobbles; slightly acid;
<br />Inclu d with this soil in mappi g at the eastern diffuse wavy Dun ary.
<br />edge of a park are a few small are of sails that are B3-2a to 32 inches; light yellowish bmwn (lOYR•6/4) very
<br />aimila to Kather soils but that hav a surface layer vetly light sandy clay loam, yeltowish brown
<br />10YR b/4) moist; weak medium subangular blocky
<br />of sa y loam. Also included are sma areas on ridge structure; hard, very friable, slightly sticky and
<br />Gres and slope breaks of Crespin and rlstrom soils. slightl plastic; a few patchy clay films on peda,
<br />R off is medium and rapid. The azard of soil on un erside of coarse fragments, and ae bndges
<br />blo in is moderate and the hazard of star erosion between sand grains• so percent gravel and cob-
<br />s r blew; slightly acid; diffuse wavy boundary.
<br />la eVere. IIC-32 to 60 inches; light yellowish brown (lOYR 6/4)
<br />Most of the acreage of this soil is used for grazing. very gravelly sans, yellowish brown (lOYR 6/4)
<br />small acres a of this soil is irri ated nd is used mmat; singQle ggrained; loose; 70 percent gravel and
<br />g' g cobbles; slightly acid.
<br />or grass hay and pasture. If this soil is i igated, 8n The profile is 36 to 75 percent coarse fmgmenta 'k inch
<br />rganic mat 1 to 4 inches thick generally fo son the to io inches in diameter. It is medium acid to m~Idly alka-
<br />surface and bright rustcolored mottles fo through- line. Them is a thin, dark-colored Al horizon in some
<br />out the profile. Capability UIIItS VIe-1, non rrigated, Places. Depth to the sandy-skeletal IIC horizon ranges from
<br />24 to 66 inches. The IIC horizon is very grave ly or very
<br />and VIe-8, irrigated; Mountain Shale range site. cobbty loamy Band or sand.
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