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Custom Soil Resource Report <br />San Joaquin County, California <br />107—Archerdale clay loam, 0 to 2 percent slopes <br />Map Unit Setting <br />National map unit symbol. hhr6 <br />Elevation: 40 to 130 feet <br />Mean annual precipitation: 14 inches <br />Mean annual air temperature: 61 degrees F <br />Frost -free period. 270 days <br />Farmland classification: Prime farmland if irrigated <br />Map Unit Composition <br />Archerdale 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 Archerdale <br />Setting <br />Landform: Fan terraces <br />Landform position (two-dimensional): Footslope <br />Landform position (three-dimensional): Tread <br />Down-slope shape: Linear <br />Across -slope shape: Linear <br />Parent material: Alluvium from mixed rock sources <br />Typical profile <br />A - 0 to 8 inches: clay loam <br />Bw1 - 8 to 35 inches: clay <br />Bw2 - 35 to 60 inches: clay <br />Properties and qualities <br />Slope: 0 to 2 percent <br />Depth to restrictive feature: More than 80 inches <br />Natural drainage class: Well drained <br />Runoff class: High <br />Capacity of the most limiting layer to transmit water (Ksat): Moderately low to <br />moderately high (0.06 to 0.20 in/hr) <br />Depth to water table: More than 80 inches <br />Frequency of flooding: Rare <br />Frequency of ponding: None <br />Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0 <br />mmhos/cm) <br />Available water storage in profile: High (about 9.3 inches) <br />Interpretive groups <br />Land capability classification (irrigated): 2s <br />Land capability classification (nonirrigated): 4s <br />Hydrologic Soil Group: C <br />Hydric soil rating: No <br />Minor Components <br />Cogna <br />Percent of map unit: 4 percent <br />13 <br />