These soils are on ground moraine positions in uplands and have slopes ranging from 1 to 65 percent. The mean annual temperature is about 50 degrees F., and the mean annual precipitation is about 100 inches. Hoquiam medial silt loam, on a northwest facing 15 percent slope under coniferous forest at 380 feet elevation.
All textures are apparent field textures.
Depth to cemented glacial till is 40 to 60 inches. The particle-size control section is 20 to 35 percent clay and 5 to 20 percent coarse fragments. The upper part of the control section has less than 4 percent organic carbon. The soil is very strongly acid or strongly acid. The umbric epipedon is 10 to 20 inches thick.