Permeability is slow or very slow.
They formed partly in periglacially transported material and partly in residuum that weathered from gray to brown Triassic and Jurassic hornfel and granulite. They area on upland flats and sideslopes in the Culpeper basin of the northern part of the Piedmont Plateau. Slopes range from 0 to 7 percent. Solum thickness ranges from 24 to 48 inches and depth to hard bedrock is from 40 to 60 inches. Hornfel and granulite gravel content range from 0 to 15 percent in the A and B horizons and from 5 to 35 percent in the BC and C horizons.