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SERIES ESTABLISHED: Reconnaissance Upper Rio Puerco, New Mexico, Soil <br />• Conservation Service, 1940. <br />MLRA OFFICE RESPONSIBLE: Phoenix, Arizona <br />REMARKS: Diagnostic horizons and features recognized in this pedon are: <br />Ochric epipedon -the zone from 0 to 7 inches <br />Argillic horizon -the zone from 7 to 24 inches. <br />Lithic contact -the boundary with sandstone at 36 inches. <br />Ustic feature -soil moisture regime and organic carbon content meets the requirements <br />for Ustic intergrades. <br />National Cooperative Soil Survey <br />U.S.A. <br />(REVISED 9/99) 2.04.9-52 <br />