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Map Unit Legend <br />Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI <br />1 Altvan loam, 0 to 1 percent <br />slopes <br />14.2 7.2% <br />3 Aquolls and Aquents, gravelly <br />substratum <br />108.9 55.5% <br />10 Ellicott-Ellicott sandy-skeletal <br />complex, 0 to 3 percent <br />slopes, rarely flooded <br />15.4 7.8% <br />13 Cascajo gravelly sandy loam, 5 <br />to 20 percent slopes <br />4.3 2.2% <br />27 Heldt silty clay, 1 to 3 percent <br />slopes <br />4.9 2.5% <br />41 Nunn clay loam, 0 to 1 percent <br />slopes <br />41.4 21.1% <br />47 Olney fine sandy loam, 1 to 3 <br />percent slopes <br />3.2 1.7% <br />51 Otero sandy loam, 1 to 3 <br />percent slopes <br />0.0 0.0% <br />85 Water 4.0 2.0% <br />Totals for Area of Interest 196.4 100.0% <br />Map Unit Descriptions <br />The map units delineated on the detailed soil maps in a soil survey represent the <br />soils or miscellaneous areas in the survey area. The map unit descriptions, along <br />with the maps, can be used to determine the composition and properties of a unit. <br />A map unit delineation on a soil map represents an area dominated by one or more <br />major kinds of soil or miscellaneous areas. A map unit is identified and named <br />according to the taxonomic classification of the dominant soils. Within a taxonomic <br />class there are precisely defined limits for the properties of the soils. On the <br />landscape, however, the soils are natural phenomena, and they have the <br />characteristic variability of all natural phenomena. Thus, the range of some <br />observed properties may extend beyond the limits defined for a taxonomic class. <br />Areas of soils of a single taxonomic class rarely, if ever, can be mapped without <br />including areas of other taxonomic classes. Consequently, every map unit is made <br />up of the soils or miscellaneous areas for which it is named and some minor <br />components that belong to taxonomic classes other than those of the major soils. <br />Most minor soils have properties similar to those of the dominant soil or soils in the <br />map unit, and thus they do not affect use and management. These are called <br />noncontrasting, or similar, components. They may or may not be mentioned in a <br />particular map unit description. Other minor components, however, have properties <br />and behavioral characteristics divergent enough to affect use or to require different <br />management. These are called contrasting, or dissimilar, components. They <br />Custom Soil Resource Report <br />11