The Almac series consists of deep, well drained soils formed in volcanic ash over residuum and colluvium from schist and gneiss. Almac soils are on mountainsides and have slopes of 3 to 90 percent. Almac fine sandy loam - under coniferous trees on a 9 percent southeast facing slope at an elevation of 5,280 feet. These soils are usually moist, but are dry in the moisture control section for 60 to 75 consecutive days following the summer solstice. The E horizon may be absent.
Reaction ranges from moderately acid to strongly acid.
It is fine sandy loam, sandy loam, cindery sandy loam, or silt loam. Reaction ranges from slightly acid to strongly acid. It is loam, gravelly loam, gravelly sandy loam, or gravelly fine sandy loam. Reaction is slightly acid to strongly acid. It is gravelly fine sandy loam, gravelly sandy loam, very gravelly sandy loam, very cobbly sandy loam, or very flaggy sandy loam.