Also, Haley soils lack rock fragments. Cheney soils have a chroma of 4 in the control section. Chewelah soils are calcareous in all parts of the solum. Benge soils are on nearly level to very steep terraces at elevations of 600 to 2,500 feet. The soils formed in glacial outwash materials with a mixture of loess in the upper part.
Summers are hot and dry and winters are cool and moist.
Mean annual precipitation is 12 to 16 inches. These are the Anders , Chard , Henningson, Quincy , and Weirman soils. Anders soils have basalt bedrock at depths of 20 to 40 inches. Chard soils are nonskeletal. Henningson, Quincy, and Weirman soils are coarse textured throughout the control section and Henningson soils have an aquic moisture regime.