LOCATION RINKER WAEstablished Series
TAXONOMIC CLASS: Medial-skeletal, amorphic, frigid Andic Haplorthods
Typical Pedon: Rinker very channery loam - on a 45 percent convex south-facing clearcut slope. (Colors are for moist soil unless otherwise stated. All textures are apparent field textures.)
0i--5 to 1 inch; accumulation of needles, twigs, and roots.
0a--1 inch to 0; decomposed forest litter.
E--0 to 2 inches; pinkish gray (7.5YR 6/2) channery silt loam, light gray (10YR 7/2) dry; massive; slightly hard, friable, slightly sticky and slightly plastic; many very fine roots; common very fine tubular pores; 30 percent channers; NaF pH less than 9.0; very strongly acid (pH 5.0); abrupt smooth boundary. (0 to 3 inches thick)
Bs1--2 to 7 inches; dark brown (7.5YR 4/4) very channery loam, light yellowish brown (10YR 6/4) dry; weak fine granular structure; soft, very friable, slightly sticky, slightly plastic, and weakly smeary; common medium roots; common fine irregular pores; 60 percent channers; NaF pH 10.0: very strongly acid (pH 5.0); clear wavy boundary. (2 to 7 inches thick)
Bs2--7 to 18 inches; dark yellowish brown (10YR 4/4) very channery loam, light yellowish brown (10YR 6/4) dry; weak fine granular structure; soft, very friable, slightly sticky and slightly plastic, weakly smeary; common fine roots; common fine irregular pores; 50 percent channers, 10 percent flags; NaF pH 10.7; strongly acid (pH 5.2); abrupt wavy boundary. (3 to 15 inches thick)
C--18 to 29 inches; light yellowish brown (2.5Y 6/4) extremely channery silt loam, pale yellow (2.5Y 7/4) dry; weak very fine granular structure; soft; very friable, slightly sticky and slightly plastic; few fine roots; few fine irregular pores; 55 percent channers, 10 percent flags; NaF pH 9.2; very strongly acid (pH 5.0); abrupt wavy boundary. (6 to 21 inches thick)
2R--29 inches; phyllite.
TYPE LOCATION: Skagit County, Washington; about six miles south of Concrete, Washington; 2,200 feet south and 800 east of the northwest corner sec. 6, T. 34 N., R. 9 E.
RANGE IN CHARACTERISTICS: Depth is 20 to 40 inches to a lithic contact with phyllite. These soils are usually moist but are dry for 45 to 60 consecutive days following the summer solstice. Mean annual soil temperature is estimated to range from 45 to 47 degrees F. Phyllite fragments in the particle-size control section range from 50 to 70 percent by weighted average.
The E horizon has hue of 7.5YR or 10YR, value of 4 through 6 moist, 5 through 7 dry, and chroma of 2 or 3 moist and dry. Some pedons lack an E horizon. Reaction is extremely acid, very strongly acid, or strongly acid.
The BS horizon has hue of 5YR through 10YR, value of 3 through 5 moist, 5 through 7 dry, and chroma of 3 or 4 moist and dry. It is very channery silt loam or very channery loam. Phyllite fragments range from 40 to 60 percent. Reaction is extremely acid, very strongly acid, or strongly acid.
The C horizon has hue of 10YR, 2.5Y, or 5Y, value of 4 through 6 moist, 5 through 7 dry, and chroma of 3 through 6 moist and dry. It is a extremely channery silt loam, extremely channery loam, very channery silt loam, or very channery loam. Phyllite fragments range from 50 to 70 percent. Reaction is very strongly acid or strongly acid.
COMPETING SERIES: These are the Cupples (T), Danforth, Montborne, Oakes, Sorensen, and the Winnecook series. Cupples and Montborne soils have a paralithic contact at 20 to 40 inches. Danforth, Oakes, and Sorensen soils lack a lithic contact within depths of 40 inches. Winnecook soils are dry for periods as long as 45 consecutive days in most years.
GEOGRAPHIC SETTING: Rinker soils are on glacially modified mountain sides. Slopes range from 8 to 65 percent. Elevation is 1,000 to 2,200 feet. These soils formed in volcanic ash and colluvium and slope alluvium from phyllite with some glacial till. The average annual precipitation is 65 to 80 inches. The mean annual air temperature is 43 to 45 degrees F. Average January temperature is 33 degrees F. and average July temperature is 61 degrees F. The frost-free season is 120 to 150 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These include the Elwell, Getchell, Springsteen, Squires, and Tokul series. Elwell and Tokul soils are 20 to 40 inches deep to a duripan. Getchell soils are 20 to 40 inches deep to a paralithic contact with dense glacial till. Springsteen soils are cryic. Squires soils are mesic.
DRAINAGE AND PERMEABILITY: Well drained; slow or medium runoff; moderate permeability.
USE AND VEGETATION: Used for woodland and wildlife habitat. Native vegetation consists of western hemlock, Douglas-fir, western redcedar, red alder, and bigleaf maple, with an understory of salal, Oregon-grape, western swordfern, western brackenfern, vine maple, and montia.
DISTRIBUTION AND EXTENT: West slopes of the Cascade Mountains in northwestern Washington. This series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Skagit County Area, Washington, 1981.
REMARKS: Classification only changed 4/94 because of recent amendments to Soil Taxonomy. This draft reflects a change in classification from loamy-skeletal, mixed, frigid Typic Haplorthods to medial-skeletal Andic Haplorthods. Characterization data available from Whatcom County Washington. National Soil Survey laboratory numbers 81P3090-3095. Diagnostic horizons and features recognized in this pedon are an albic horizon from the mineral surface to 2 inches, a spodic horizon from 2 to 18 inches, and a lithic contact with phyllite at 29 inches.