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Official Series Description - ROMBO Series https: / /soilseries.sc.egov .usda.gov /OSD_Docs /R/ROMBO.html <br />bluestem, and big bluestem. <br />DISTRIBUTION AND EXTENT: Northeastern New Mexico and southeastern Colorado. <br />LRR E, MLRA's 48A and 49. This series is moderately extensive. <br />MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Lakewood, <br />Colorado <br />SERIES ESTABLISHED: Colfax County, New Mexico, 1974. <br />REMARKS: Diagnostic horizons and features in this pedon are: <br />Particle -size control section: the zone from 10 to 30 inches. (Part of the Bw and Bk <br />horizons) <br />Ochric epipedon: the zone from 0 to 3 inches. (A horizon) <br />Cambic horizon: the zone from 3 to 20 inches. (Bw horizon) <br />Paralithic contact: at 30 inches.(Cr horizon) <br />Changes to soil moisture in the range in characteristics reflects the climate of Colfax <br />County, New Mexico. <br />Taxonomic Version: Tenth Edition, 2006 <br />National Cooperative Soil Survey <br />U.S.A. <br />3 of 3 4/9/2012 4:36 PM <br />