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._ . <br /> <br />Septic tank absorption fields of conventional size do not function <br />i <br />properly on this unit., Use of long absorption lines and sandy backfill for <br />the trench helps to crompensate for the restricted permeability. <br />Special design problems are encountered when installing septic tank <br />absorption fields on steep slopes. If septic teak absorption fields .are <br />placed in bedrock, the effluent. may not be adequately filtered and may also <br />surface in downslope areas. <br />If buildings are constructed on this unit, properly designing <br />foundations and footings and diverting runoff away from buildings help to <br />prevent structural damage because of shrinking and swelling. The effects of <br />shrinking and swelling can be reduced Dy maintaining a constant moisture <br />content around the fourdation. Backfilling excavation with material that <br />has Iow shrink-swell potential can also r+sduce the effects of shrinking and <br />swelling. Cuts needed to provide essentially level building sites can <br />expose bedrock. Nomes should be designed to conform to the present <br />landscape to keep foundation cuts to a minimum. <br />Roads and streets should be designed to offset the effects of shrinking <br />and swelling and low strength by using materials of lax shrink-swell <br />potential and high strength. Roads and streets should be designed to keep <br />cuts to a minimum, to keep grades to less than B percent, and to provide <br />drainage outlets for excess water runoff. <br />Brush management improves deteriorated areas of range that are producing <br />more woody shrubs flan were present in the potential plant community. <br />Management practices suitable for use on this unit are proper grazing <br />use and a planned grazing system. <br />This mapping unit is in capability subclass VIe. It is in Clayey <br />Foothills range site. <br />