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Custom Soil Resource Report <br /> San Joaquin County, California <br /> 220—Redding gravelly loam, 0 to 8 percent slopes, dry <br /> Map Unit Setting <br /> National map unit symbol: 2w8bm <br /> Elevation: 90 to 750 feet <br /> Mean annual precipitation: 12 to 21 inches <br /> Mean annual air temperature: 61 to 63 degrees F <br /> Frost-free period: 255 to 275 days <br /> Farmland classification: Not prime farmland <br /> Map Unit Composition <br /> Redding, gravelly loam, and similar soils: 85 percent <br /> Minor components: 15 percent <br /> Estimates are based on observations, descriptions, and transects of the mapunit. <br /> Description of Redding, Gravelly Loam <br /> Setting <br /> Landform: Fan remnants <br /> Landform position(three-dimensional):Tread <br /> Down-slope shape: Linear <br /> Across-slope shape: Linear <br /> Parent material: Loamy alluvium derived from igneous, metamorphic and <br /> sedimentary rock over clayey alluvium derived from igneous, metamorphic and <br /> sedimentary rock over cemented alluvium derived from igneous, metamorphic <br /> and sedimentary rock <br /> Typical profile <br /> Ap-0 to 5 inches: gravelly loam <br /> BA -5 to 17 inches: gravelly loam <br /> 2Bt- 17 to 22 inches: clay <br /> 2Btgm-22 to 60 inches: cemented gravelly material <br /> Properties and qualities <br /> Slope: 0 to 8 percent <br /> Depth to restrictive feature: More than 80 inches; 20 to 39 inches to duripan <br /> Drainage class: Moderately well drained <br /> Capacity of the most limiting layer to transmit water(Ksat):Very low(0.00 in/hr) <br /> Depth to water table:About 5 to 39 inches <br /> Frequency of flooding: None <br /> Frequency of ponding: None <br /> Maximum salinity: Nonsaline (0.2 to 0.5 mmhos/cm) <br /> Sodium adsorption ratio, maximum:2.0 <br /> Available water supply, 0 to 60 inches: Very low(about 2.0 inches) <br /> Interpretive groups <br /> Land capability classification (irrigated): 6e <br /> Land capability classification (nonirrigated): 6e <br /> Hydrologic Soil Group: D <br /> Ecological site: R017XY902CA- Duripan Vernal Pools <br /> Hydric soil rating: No <br /> 13 <br />