LOCATION PINBIT WA
Established Series
Rev. RWL/PNP/KDPL/SBC
09/2019
PINBIT SERIES
Landscape--plateaus
Landform--terraces, structural benches
Slope--2 to 10 percent
Parent material--volcanic ash and alluvium derived from basalt
Mean annual precipitation--about 760 mm
Mean annual air temperature--about 8 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--mesic
Soil moisture subclass--typic
TAXONOMIC CLASS: Ashy, amorphic, mesic Humic Vitrixerands
TYPICAL PEDON: Pinbit stony ashy loam, stony surface, forested, on a 6-percent, southwest-facing slope at an elevation of 550 m (All textures are apparent field textures.)
Oi--0 to 1 cm; slightly decomposed plant material
Oa--1 to 3 cm; highly decomposed plant material
A--3 to 10 cm; stony ashy loam, brown (7.5YR 4/2) dry, dark reddish brown (5YR 3/2) moist; weak very fine and fine granular structure; soft, very friable, slightly sticky and nonplastic; weakly smeary; many very fine and fine roots; many very fine irregular pores; 10 percent gravel and 5 percent stones; slightly acid (pH 6.1); clear smooth boundary
AB--10 to 28 cm; ashy sandy loam, brown (10YR 5/3) dry, dark brown (7.5YR 3/2) moist; weak very fine and fine subangular blocky structure; soft, very friable, slightly sticky and nonplastic; weakly smeary; common very fine and fine and many medium roots; many very fine irregular pores and common fine tubular pores; 10 percent gravel; slightly acid (pH 6.4); gradual smooth boundary
Bw1--28 to 64 cm; ashy sandy loam, light yellowish brown (10YR 6/4) dry, dark brown (7.5YR 3/4) moist; weak very fine and fine subangular blocky structure; soft, very friable, slightly sticky and nonplastic; weakly smeary; common very fine and few coarse roots; common very fine irregular pores and few very fine tubular pores; 5 percent gravel; slightly acid (pH 6.4); gradual smooth boundary
Bw2--64 to 104 cm; gravelly ashy loam, light yellowish brown (10YR 6/4) dry, brown (7.5YR 4/3) moist; weak very fine and fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; weakly smeary; few very fine and fine and common medium roots; many very fine irregular pores and common very fine tubular pores; 15 percent gravel; slightly acid (pH 6.5); gradual smooth boundary
Bw3--104 to 155 cm; very gravelly ashy loam, light yellowish brown (10YR 6/4) dry, brown (7.5YR 4/4) moist; weak very fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; weakly smeary; few very fine and fine roots; many very fine irregular pores; 50 percent gravel; slightly acid (pH 6.5)
TYPE LOCATION: Klickitat County, Washington, about 8 km east of Glenwood; about 300 m south of the northeast corner of section 9, T. 6 N., R. 13 E.; latitude 46.0266517, longitude 121.1776439, datum WGS 84 (coordinates estimated from section, township, and range)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--8 to 9 degrees C
Soil moisture control section--dry in all parts 75 to 90 consecutive days during the 4 months following summer solstice in 6 years or more out of 10 years
Rock fragment content--5 to 20 percent in particle-size control section, 5 to 50 percent below a depth of 100 cm
Percentage of surface covered with stones--0.01 to 0.1 percent in some pedons
Andic soil properties in 0- to 100-cm particle-size control section
*Moist bulk density--0.75 to 0.90 g/cm3
*Volcanic glass content--15 to 30 percent
*Ammonium oxalate aluminum plus one-half iron--1 to 2 percent
*Phosphorus retention--25 to 60 percent
*15-bar water retention (air-dried samples)--5 to 12 percent
A horizon
Hue--5YR, 7.5YR, 10YR
Value--4 or 5 dry, 2 or 3 moist
Chroma--2 to 4 dry or moist
Texture of fine-earth fraction--ashy loam, ashy sandy loam
Gravel content--0 to 15 percent
Stone content--0 to 25 percent
Thickness--5 to 15 cm
AB horizon
Thickness--13 to 23 cm
Bw horizon
Hue--7.5YR, 10YR
Value--5 or 6 dry, 3 to 5 moist
Chroma--3 or 4 dry or moist
Texture of fine-earth fraction--ashy sandy loam, ashy loam
Gravel content--15 to 35 percent to a depth of 100 cm, 35 to 60 percent below a depth of 100 cm
Combined thickness--greater than 112 cm
COMPETING SERIES:
Chemawa--30 to 60 percent glass in particle-size control section; dry 45 to 60 consecutive days following summer solstice
Parkdale--no rock fragments in the particle-size control section
Trouter--50 to 100 cm (moderately deep) to a lithic contact (basalt)
GEOGRAPHIC SETTING:
Elevation--520 to 640 m
Climate--warm, dry summers; cool, moist winters; snow cover in December through March
Mean annual precipitation--710 to 810 mm
Mean January air temperature--about -3 degrees C
Mean July air temperature--about 18 degrees C
Mean annual air temperature--about 7 to 8 degrees C
Frost-free season--85 to 105 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Glen--frigid soil temperature regime; dry 60 to 75 days; formed in alluvium; on terraces
Segidal--on lacustrine terraces; aquic soil moisture regime
Trelk--on plateaus; fine-loamy argillic horizon
Yedlick--on mountains; loamy-skeletal particle-size class
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--moderately high
USE AND VEGETATION:
Use--mainly timber production, livestock grazing, and wildlife habitat
Native vegetation--mainly ponderosa pine, antelope bitterbrush, elk sedge, and Idaho fescue
DISTRIBUTION AND EXTENT: East slopes of Cascade Mountains in Klickitat and Yakima Counties, Washington; MLRA 6; small extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Yakama Nation, Klickitat County, Washington; 2014
REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Umbric epipedon--zone from 3 to 28 cm
*Cambic horizon--zone from 28 to 155 cm
*Andic properties--zone from 3 to 155 cm
*Particle-size control section--zone from 3 to 103 cm
ADDITIONAL DATA:
Laboratory data--pedon number 90WA039002; National Soil Survey Laboratory, Lincoln, Nebraska
National Cooperative Soil Survey
U.S.A.