Depth to the base of the argillic horizon ranges from 36 to 60 inches. Depth to horizons with more than 10 percent sand is 30 to 55 inches. The particle-size control section averages 35 to 42 percent clay and less than 10 percent fine sand or coarser. The Ap or Eg horizon has properties as follows. The Ap horizon has hue of 10YR, value of 4 to 6, and chroma of 1 or 2.
Reaction ranges from moderately acid to slightly alkaline.
The Eg horizon has hue of 10YR, value of 5 to 7, and chroma of 1 or 2. Reaction ranges from very strongly acid to neutral. It is dominantly silty clay loam but some pedons have subhorizons of silty clay. Clay content averages 35 to 42 percent and sand content averages less than 10 percent. Reaction is commonly very strongly acid to moderately acid but ranges to neutral in the lower part in some pedons.