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' NONTECHNICAL SOILS OESCRI PTI~POAT <br />1972 Broadway <br />Map ~ Soil name and description <br />1 <br />~~ This unit consists of very deep, moderately well <br />~ drained soils on terraces. These soils formed Sn <br />' ~ alluvium derived from igneous, metamorphic, and <br />~ sedimentary rocks. The surface layer ie silty clay <br />loam 9 inches thick. She upper 9 inches of the <br />~ underlying material are silty clay. She next layer of <br />~ underlying material ie mottled very fine Bandy loam and <br />fine sandy loam about 16 inches thick. Below th ie ie <br />17 inches of mottled sandy loam and loamy Band <br />' ~ underlying material, and the lower part of the <br />underly Sng material to a depth below 60 inc hee Sa <br />~ ez[remely cobbly loamy sand. Permeability of this soil <br />ie Blow in the upper 1B inc hee avd moderate below 1B <br />Snc hee. Available water capacity ie moderate. <br />EE EecCive rooting depth ie 60 inches or more. RunoEE <br />is el ow, and [he hazard of water erosion ie alight. A <br />~ seasons 1, high water table fluc tuatee between 25 and 40 <br />' ~ Snchee from March Chrough September. This high water <br />table results Erom ep ring runoff followed by irrigation <br />throughout the eunune r. Flooding ie rare, and duration <br />~ of flooding Se brief. <br />' ~ Shia unit ie conaide red prime farmland. <br />~ Capability Subclass 7S; irrigated; 75; nonirrigated <br />~ Capabil i[y clae eif icacicn is the grouping of soils [o <br />~ show, in a general way, [heir suit ability for moat <br />' ~ kinds of farming. IC Se a practical claeeif ication <br />baaed on limi[ati one of the voile, the risk of damage <br />when Chey axe used, and the way they re epond to <br />~ treatment. The voile are classified according [o <br />' ~ degree and kind of permanent limitaCi on, but without <br />~ consideration of major and generally expene ive <br />~ landEorming that would change Che elope, depth, or <br />' ~ other characterie[ice of the eo ile; without <br />cons ids ration of pose ibis unlikely ma]or reclamation <br />~ pro]ecte. <br />' ~ Claae III - Severe limitations that reduce choice of <br />~ trope or require epeeSal coneervat ion praet Scee or both. <br />1 <br /> <br /> <br />• <br />1 <br />