Elevation ranges from 100 to 900 feet. They are in a humid marine climate with cool, wet winters and cool, dry summers. Annual precipitation ranges from 80 to 130 inches. These are the Le Bar and the competing Copalis , Elochoman and Zenker soils. Le Bar soils lack hard rock fragments and have 0.85 or less bulk density in the control section.
Principal uses are timber production, watershed, wildlife habitat and recreation.
Vegetation is primarily a mixed forest of Douglas-fir and western hemlock with scattered western redcedar and red alder. Understory species include western swordfern, western brackenfern, salal, red huckleberry, salmonberry, vine maple and cascara. The series is moderately extensive. Mopang soils are isomesic. All depths to diagnostic horizons and other features are measured from the top of the first mineral horizon.