Holston and Norfolk soils have hue 7.5YR or yellower in the B horizon. Leesburg, Minvale, and Nella soils have more than 15 percent rock fragments in the B horizon. Octavia soils have a clayey 2Bt horizon with moderately slow permeability. Orangeburg soils have less than 15 percent silt in the particle size control section. Ruston soils are bisequal.
Smithdale soils have significantly less clay in the lower part of the B horizon.
Jefferson and Nolichucky soils are mesic and Jefferson soils have a solum less than 60 inches thick. Waynesboro soils have a clayey particle size control section. Allen soils are on hillsides, foot slopes, or terraces. Slopes range from 2 to 40 percent. These soils formed in loamy alluvium or colluvium and in residuum of sandstone and shale.