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Custom Soil Resource Report <br />Snohomish County Area, Washington <br />4—Alderwood-Everett gravelly sandy loams, 25 to 70 percent slopes <br />.Map Unit .Setting <br />National map unit symbol. 2hyy <br />Elevation: 50 to 800 feet <br />Mean annual precipitation: 25 to 60 inches <br />Mean annual air temperature: 48 to 52 degrees F <br />Frost -free period: 180 to 220 days <br />Farmland classification: Not prime farmland <br />Map Unit Composition <br />Alderwood and similar soils: 60 percent <br />Everett and similar soils: 25 percent <br />Minor components: 15 percent <br />Estimates are based on observations, descriptions, and transects of the mapunit. <br />Description of Alderwood <br />Setting <br />Landform: Till plains <br />Parent material: Basal till <br />Typical profile <br />H1 - 0 to 7 inches: gravelly ashy sandy loam <br />H2 - 7 to 35 inches: very gravelly ashy sandy loam <br />H3 - 35 to 60 inches: gravelly sandy loam <br />Properties and qualities <br />Slope: 25 to 70 percent <br />Depth to restrictive feature: 20 to 40 inches to densic material <br />Drainage class: Moderately well drained <br />Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately <br />low (0.00 to 0.06 in/hr) <br />Depth to water table: About 18 to 36 inches <br />Frequency of flooding: None <br />Frequency of ponding: None <br />Available water capacity: Low (about 3.0 inches) <br />Interpretive groups <br />Land capability classification (irrigated): None specified <br />Land capability classification (nonirrigated): 7e <br />Hydrologic Soil Group: B <br />Hydric soil rating: No <br />Description of Everett <br />Setting <br />Landform: Terraces, plains <br />Parent material. Glacial outwash <br />Typical profile <br />H1- 0 to 6 inches: gravelly ashy sandy loam <br />H2 - 6 to 18 inches: very gravelly ashy sandy loam <br />H3 - 18 to 60 inches: extremely gravelly sand <br />13 <br />