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• • ATTACHMENT 2 34-Peyton candy loam, 4 to 8 percent slopes. This deep, genty eloping to moderately eloping, well drained sdl is on upland alluvial Tana and valley side slopes (fig. 14). It formed to erkosic alluvium and residuum. Elevatbn ranges from about 8,400 to 7,300 Ieet..Averege annual pretipttation ranges from about 17 to 18 Inches, average alvtuaf eh temperelure la about 43 degrees F, and aver- age frost-free period Is about 120 days. included with this Boll In mapping are smell areas o1 Brtrssett loam, Holdernese loam, and Elbeth sandy loam that have 4 to 8 percent elopes. Typicaly, fife surface layer. le grayish brown sandy loam and dark greyish brown sandy clay loam about 7 Inches thk;k. The subsoil to s depth of about 32 Inches is dark grayish brawn, greyleh brown, and light brownish grey sandy clay loam. The twbatratum Is Ilght brownish gray and white coarse sandy loam and loamy coarse sand to a depth of 80 Inches. Permeability fs moderete, end available water capacity Is moderate to high. Surface runoff ie medium, and the hazard of erosion is moderate. In a few erase, shallow gullies and rule ere common: Moat o1 this soil b used for grazing. A few areas are used for nonirrlgated cropland, and wheat is the mein aop. Tha estimated yield for wheat Is about 20 buehele per acre, and it Is 27 bushels per aae for oats. The choice o1 trope Is limited by the short growing season. Thts soil Is well euNed to windbreaks and environmental plentlnge end for moat engineering uses. Rangeland vegetatn is mainly prairie sandreed, mountain muhly, send bluestem, prairie Junegrass, little blueetem, end blue grams. When range conditbn dete- rbratea because of overgrazing or other uses, grasses, such ae blue grams and nable bluegrassea, and forts, such as hairy goldaeter, increase. Seeding the range is recommended to revegetate de- pleted areas in order to protect the soil .from wind end water erosion. Native grasses are desirable for range seeding, but tame epeCiea, such as Nordan crested wheatgrass, Ruaslail wlldrye, pubescent wheatgrass, and Intermediate wheatgrass, may also be used. The main concerns- of management on nonirrigated cropland are conserving moisture end protecting the soil from wind and water erosion. Stubble mulch tillage and Incorporating crop residue in and on the surface are necessary to protect the soil from erosion, improve soil Ulth, end conserve moisture. Chiseling or subsoiling breaks up tillage pane end improves water infiltration in the subsoil. Planting crops in alternate atiips at right angles to the prevailing wind is also effective in protect- ing the poil Irom blowing. Tillage operations need to be kept to a minimum. Thla loll Is generally suited to `Vndbreaks end environ- mental plantings. Wind erosion is the main limitation to the establishment of trees and shrubs. This hazard can be overcome by cultivating only In the tree row and leaving a aWp of vegetable cover between the rows. Supplemental Irrigation is generally needed. at the time of Planting and during dry periods. Well suRed trees Utat survive best are Rocky Mountain Juniper, eastern redce- dar, ponderosa pine, Siberian elm, Russian-olive, and hackbeny. The beet suited shrubs ere skunkbush sumac, American plum, and Hansen rose. This soil Is well suited to the conatructlon of homesites and other urban developments end has only minor limita- tbne that can be easily modHled Where this sop is used for a sewage lagoon system, special sealing methods are needed to overcome the excesaHe seepage condi- tion. ' This 8011 is in Cepablllly subclass IVs, nonirrigeted. THIS SOIL IS IN HEL CLASS 1 FOR WIND AND• CLASS 3 FOR WATER. THERE ARE NO HYDRIC COMPONEN~fS IDI THIS SOIL. .~~ }