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Ref. Page No.M2009-006 00099 <br /> Custom Soil Resource Report <br /> The presence of minor components in a map unit in no way diminishes the <br /> usefulness or accuracy of the data. The objective of mapping is not to delineate <br /> pure taxonomic classes but rather to separate the landscape into landforms or <br /> landform segments that have similar use and management requirements. The <br /> delineation of such segments on the map provides sufficient information for the <br /> development of resource plans. If intensive use of small areas is planned, <br /> however, onsite investigation is needed to define and locate the soils and <br /> miscellaneous areas. <br /> An identifying symbol precedes the map unit name in the map unit descriptions. <br /> Each description includes general facts about the unit and gives important soil <br /> properties and qualities. <br /> Soils that have profiles that are almost alike make up a soi/ series. Except for <br /> differences in texture of the surface layer, all the soils of a series have major <br /> horizons that are similar in composition, thickness, and arrangement. <br /> Soils of one series can differ in texture of the surface layer, slope, stoniness, <br /> salinity, degree of erosion, and other characteristics that affect their use. On the <br /> basis of such differences, a soil series is divided into soi/ phases. Most of the <br /> areas <br /> shown on the detailed soil maps are phases of soil series. The name of a soil <br /> phase <br /> commonly indicates a feature that affects use or management. For example, <br /> Alpha silt loam. o to 2 percent slopes, is a phase of the Alpha series. <br /> Some map units are made up of two or more major soils or miscellaneous areas. <br /> These map units are complexes, associations, or undifferentiated groups. <br /> A complex consists of two or more soils or miscellaneous areas in such an <br /> intricate pattern or in such small areas that they cannot be shown separately on <br /> the maps. The pattern and proportion of the soils or miscellaneous areas are <br /> somewhat similar in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an <br /> example. <br /> An association is made up of two or more geographically associated soils or <br /> miscellaneous areas that are shown as one unit on the maps. Because of <br /> present or anticipated uses of the map units in the survey area, it was not <br /> considered practical or necessary to map the soils or miscellaneous areas <br /> separately. The pattern and relative proportion of the soils or miscellaneous <br /> areas are somewhat similar. Alpha-Beta association, 0 to 2 percent slopes, is an <br /> example. <br /> An undifferentiated group is made up of two or more soils or miscellaneous areas <br /> that could be mapped individually but are mapped as one unit because similar <br /> interpretations can be made for use and management. The pattern and <br /> proportion of the soils or miscellaneous areas in a mapped area are not uniform. <br /> An area can <br /> be made up of only one of the major soils or miscellaneous areas, or it can be <br /> made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an <br /> example. <br /> Some surveys include miscellaneous areas. Such areas have little or no soil <br />