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• grazing should be managed so that the desired balance of species is maintained in the plant community. Management practices suitable for use on this unit are proper grazing use and a planned grazing system. Steepness of slope limits access by livestock and promotes overgrazing of the less sloping areas. Trails or walkways can be constructed in places to encourage livestock grazing in areas where access is limited. If this unit is used for homesite development, the main limitations are slope, shrink-swell potential and very slow permeability. 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 backfilling with material that has low shrink-swell potential. Septic tank absorption fields do not function properly because of the very slaw permeability. 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 absorp- tion fields. Absorption lines should be installed on the contour. This map unit is in capability subclass VIIe. It is in Brushy Loam range site. 3--Unnamed - Adel 4ariant Complex, 0 to 5 percent slopes. This mapping unit consists of deep, moderately well drained, nearly level to gently sloping soils forming on floodplains and low terraces. These soils are forming predominately in medium and moderately coarse textured mixed alluvium. They occur along Fish Creek. The mapping unit is composed of approximately 50 percent fine-loamy • Pachic Cryoborolls and 35 percent Adel Variant soils. Adel Variant soils are wetter than typical Adel soils. Included in the mapping are approximately Ex. 16-9