The BC horizon has moist hue of 7.5YR or 10YR, moist value from 3 through 5 and moist chroma from 3 through 6. Texture is silt loam or very fine sandy loam. The 2BC horizon, when present, has moist hue of 7.5YR or 10YR, moist value from 3 through 5 and moist chroma from 3 through 6. Texture is loam or sandy loam. The 2C horizons have moist hue from 10YR through 2.5Y, moist value from 3 through 5 and moist chroma from 2 through 4.
Texture is sandy loam or loam.
Almac and Chiwaukum soils have a xeric moisture regime and MAST greater than 37 degrees F. Foss soils have a MAST greater than 37 degrees F. Pinkham soils are very stony in the upper part of the particle-size control section. The Estelle soils are on glacial till plains and hillslopes. Slopes range from 0 to 65 percent. The soils formed in a loess mantle dominated by amorphous material. The loess mantle is underlain by friable to firm, gravelly glacial till material.