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Custom Soil Resource Report <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 present <br />or anticipated uses of the map units in the survey area, it was not considered <br />practical or necessary to map the soils or miscellaneous areas separately. The <br />pattern and relative proportion of the soils or miscellaneous areas are somewhat <br />similar. Alpha -Beta association, 0 to 2 percent slopes, is an 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 proportion <br />of the soils or miscellaneous areas in a mapped area are not uniform. An area can <br />be made up of only one of the major soils or miscellaneous areas, or it can be made <br />up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. <br />Some surveys include miscellaneous areas. Such areas have little or no soil <br />material and support little or no vegetation. Rock outcrop is an example. <br />H <br />