The BC horizon has similar colors to the Bt horizon. It is fine sandy loam, sandy clay loam, or loamy fine sand. The reaction ranges from slightly acid to strongly acid. The C horizon has the same colors as the Bt and BC horizons. It is fine sandy loam or loamy fine sand.
Reaction ranges from neutral to strongly acid.
These are the Dutek and Stidham series. Dutek soils are warmer for longer periods of time. Dougherty soils occur on nearly level to moderately steep terraces. They have developed in strongly acid through neutral sandy or loamy sediments. Slopes are dominantly between 0 to 8 percent but range to 20 percent.