These soils are on benches and terraces. Slopes are 0 to 15 percent. The mean annual temperature is about 50 degrees F. and the mean annual precipitation is about 140 inches. Willaby silt loam, on a 5 percent east facing slope under coniferous forest at 340 feet elevation.
All textures are apparent field textures.
Depth to the IIC horizon ranges from 40 to 60 inches. The particle size control section is 15 to 35 percent hard rock fragments and is 35 to 50 percent clay. The A horizon has hue of 5YR through 10YR moist, value of 3 or 4 moist and 4 or 5 dry and chroma of 3 or 4 moist and 4 through 6 dry. This horizon with a chroma of 3 is less than 10 inches thick. The B horizon has hue of 7.5YR or 10YR and value of 5 or 6 moist.