The Baxter , Christiana , Dewey , Dunmore , Fullerton , Hagerstown , Lodi and Waynesboro series are in related families. The Baxter and Hagerstown soils have base saturation more than 35 percent. Christiana and Dunmore soils have kaolinitic mineralogy. Dewey, Fullerton, and Waynesboro soils have thermic soil temperature regimes. Lodi soils have sola less than 60 inches thick.
Frederick soils are on uplands and are sloping to very steep.
Slopes are mainly 2 to 15 percent, but may range from 0 to 60 percent. The soils formed in clayey residuum derived from dolomitic limestone with a small component of sandstone, siltstone, and shale. In some areas the upper part of the solum is developed in as much as 20 inches of silty material. The climate is humid temperate. The mean annual temperature ranges from 54 to 57 degrees F., and the mean annual precipitation ranges from 38 to 44 inches.