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<br />SOIL CLASSIFICATION OF MAJOR SOILS <br />Soil <br />Series Familya <br />Subgroup <br />Billings fine-silty, mixed (calcareous), <br />mesic <br />Chipeta clayey, mixed (calcareous), mesic, <br />shallow <br />Fruita fine-loamy, mixed, mesic <br />Haverson fine-loamy, mixed (calcareous), <br />mesic <br />Havre fine-loamy, mixed (calcareous), <br />frigid <br />Typic Torrifluvents <br />Typic Torriorthents <br />Typic Haplargids <br />Ustic Torrifluvents <br />Ustic Torrifluvents <br />• Nihill loamy-skeletal, mixed (calcareous), Ustic Torriorthents <br />mesic <br />Glendive coarse-loamy, mixed (calcareous), Ustic Torrifluvents <br />frigid <br />Rentsac loamy-skeletal, mixed (calcareous), Lithic Ustic <br />frigid Torriorthents <br />Rivra sandy-skeletal, mixed, frigid Ustic Torrifluvents <br />Variant <br />Uffens fine-loamy, mixed, mesic Typic Natrargids <br />a Soils mapped within the proposed permit area are of mesic or <br />frigid temperature regimes. The permit area is located within <br />a transition zone between the two regimes (Dave Dwyer, SCS <br />Grand Junction, personal communication. 1980). The SCS has <br />recently mapped the area and has used aspect rather than <br />elevation as a break between the temperature classes. Mapping <br />for this project generally follows the above criteria and <br />delineates a temperature break south of Munger Canyon where the <br />flood plain of East Salt Creek widens. <br />• <br />