Snohomish silt loam - cultivated and drained. The upper part of the particle-size control section lacks coarse fragments, averages less than 15 percent fine and coarser sand, and averages 18 to 35 percent clay, and l5 to 60 percent volcanic ash. Depth to the organic layers ranges from 14 to 36 inches. These soils have an irregular distribution of organic matter with depth. Fibers in the lower part of the particle-size control section are mostly from grasses and sedges, but pedons average up to 15 percent wood fragments.
Reaction is strongly acid to slightly acid.
It is silt loam or silty clay loam. Reaction is strongly acid to slightly acid. It is silt loam, silty clay loam, or mucky silt loam. Individual layers are sapric material or hemic material or stratified woody mucky peat, muck, sedge mucky peat, and sedimentary peat. The fiber content ranges from 20 to 80 percent unrubbed and 1 to 25 percent rubbed.