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Map Unit Composition <br />Pinon and similar soils: 55 percent <br />Progresso and similar soils: 30 percent <br />Minor components: 15 percent <br />Component Descriptions <br />Pinon soils <br />Landform: Hill, ridge <br />Parent material: Residuum weathered from interbedded sandstone and shale <br />Slope: 3 to 12 percent <br />Depth to restrictive feature: 10 to 20 inches to bedrock (lithic) <br />Drainage Class: Well drained <br />Slowest permeability: Moderate <br />Available water capacity: About 1.8 inches (very low) <br />Shrink -swell potential: About 1.5 percent (low) <br />Hazard of flooding: None <br />Depth to seasonal high water table: Greater than 72 inches <br />Runoff class: Very high <br />Calcium carbonate maximum: About 40 percent <br />Salinity maximum: About 2 mmhos/cm (nonsaline) <br />Ecological site: Pinon-Juniper <br />Potential native vegetation: Utah juniper, two needle pinyon, galleta, Indian ricegrass, Wyoming <br />big sagebrush, saline wildrye <br />Potential production of cordwood: 8 to 12 cords per acre in a stand that averages 5 inches in <br />diameter at a height of 1 foot <br />Land capability subclass: (nonirrigated) 6s <br />Typical profile <br />0 to 5 inches - loam <br />5 to 16 inches - loam <br />16 to 20 inches - weathered bedrock <br />Progresso soils <br />Landform: Hill, ridge <br />Parent material: Alluvium derived from sandstone <br />Slope: 3 to 12 percent <br />Section 2.04.9 Page 10 Sept. 2015 (TR -11) <br />