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of The potential plant community on this unit is mainly alkali sagebrush, • western wheatgrass, lettermane needlegrass and prairie 3unegrass. Other plants that characterize this site are Vasey rabbitbrush and onion. The average annual production of air-dry vegetation is about 500 pounds per acre. If the range is overgrazed, the proportion of preferred forage plants decreases and the proportion of less preferred forage plants increases. Therefore, livestock grazing should be managed so that the desired balance of preferred species is maintained in the plant community. Fanagement practices suitable for use on this soil are proper range use. deferred grazing, rotation grazing, and brush management. Brush management improves deteriorated areas of range that are producing more woody shrubs than were present in the potential plant community. If the range vegetation is seriously deteriorated, seeding is needed. The plants selected for seeding should meet the seasonal requirements of livestock or wildlife, or both. If this unit is used for homesite development, tine main limitations are shrink-swell potential, very slow permeability and low strength. If buildings are constructed on this soil, properly designing foundations and footings and diverting runoff away from buildings help to prevent structural damage because of shrinking and swelling. The effects of shrinking and swelling can be minimized by using proper engineering designs and by backfllling with material that has low shrink-swell potential. Permeaoility Is very slow. Use of sandy backfill for the trench and long absorption lines helps to compensate for the very slow permeability. Slope is a concern in installing septic tank absorption fields. Absorption lines should be installed on the contour. Buildings and roads should be designed • to offset the limited ability of the soil in this unit to support a load. This map unit is in capability subclass VIe. It is in Claypan range site.