2012-05-10_PERMIT FILE - M2012023

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Official Series Description - ROMBO Series https: / /soilseries.sc.egov .usda.gov /OSD_Docs /R/ROMBO.html Depth to paralithic contact: 20 to 40 inches Rock fragment content: 15 to 50 percent on the surface, 10 to 30 percent on a weighted average in the particle -size control section. Reaction: neutral or slightly alkaline A horizon: Hue: 2.5Y or 10YR Value: 4 or 5 dry, 2 or 3 moist Chroma: 1 to 3 Texture: clay, silty clay loam, clay loam or loam. Bw horizon: Hue: 2.5Y or 10YR Value: 4 or 5 dry, 3 or 4 moist Chroma: 2 through 4 Texture: silty clay loam, clay loam, or clay Clay content: 35 to 50 percent Bk horizon: Hue: 2.5Y or 10YR Value: 4 or 5 dry, 3 or 4 moist Chroma: 2 through 4 Texture: silty clay loam, clay loam, or clay Calcium carbonate equivalent: 3 to 10 percent COMPETING SERIES: This is the Goemmer(CO) series. Goemmer soils: have hues redder than 10YR and do not have horizons with calcium carbonate accumulations. GEOGRAPHIC SETTING: Landform: steep and very steep stony and bouldery convex mountain slopes and hills . Parent material: stony colluvium and alluvium from shale; typically of the Raton Formation. Elevations range from 7,000 to 9,000 feet. Slopes: 3 to 60 percent The climate is continental. Mean annual temperature: 40 to 47 degrees F., and the mean summer temperature is 61 to 63 degrees F. Mean annual precipitation: 16 to 23 inches Frost free period: 70 to 100 days, 80 to 100 days in the Rio Arriba Area. GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dargol and Midnight soils. Dargol soils have argillic horizons over bedrock at depths of 20 to 40 inches. Midnight soils have a loamy - skeletal control section. DRAINAGE AND PERMEABILITY: Well drained, high or very high runofthigh runoffvery high runoff; slow permeability. USE AND VEGETATION: Wildlife, recreation, and limited use for range. Gambel's oak, mountain mahogany, twoneedle pinyon, oneseed juniper, blue grama, sideoats grama, little 2 of 3 4/9/2012 4:36 PM