LOCATION BISPING WAEstablished Series
TAXONOMIC CLASS: Ashy over loamy, glassy over isotic, mesic Humic Vitrixerands
TYPICAL PEDON: Bisping fine sandy loam-under ponderosa pine and Douglas-fir forest on a 5 percent southeast facing broad ridgetop at an elevation of 2,830 feet. (Colors are for dry soil unless otherwise stated. All textures are apparent field textures.)
Oi--1 inch to 0; undecomposed forest litter.
A1--0 to 4 inches; grayish brown (10YR 5/2) fine sandy loam; very dark brown (10YR 2/2) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; many fine and common medium roots; few very fine pores; 10 percent pumice; neutral (pH 6.8); clear smooth boundary. (4 to 6 inches thick)
A2--4 to 10 inches; brown (10YR 5/3) cindery fine sandy loam, dark brown (10YR 3/3) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; common fine and medium roots; few very fine pores; 15 percent pumice; neutral (pH 6.6); clear smooth boundary. (6 to 8 inches thick)
Bw--10 to 19 inches; pale brown (10YR 6/3) cindery fine sandy loam, brown (10YR 4/3) moist; weak medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; common medium and few fine and coarse roots; few very fine tubular pores; 25 percent pumice; neutral (pH 6.6) gradual wavy boundary. (7 to 12 inches thick)
C1--19 to 30 inches; pale brown (10YR 6/3) cindery fine sandy loam, brown (10YR 4/3) moist; massive; soft, very friable, nonsticky and nonplastic; few fine and medium roots; common very fine tubular pores; 30 percent pumice; neutral (pH 6.8); clear wavy boundary (10 to 14 inches thick)
2C2--30 to 38 inches; light yellowish brown (10YR 6/4) loam, dark yellowish brown (10YR 4/4) moist; massive; slightly hard, friable, slightly sticky and slightly plastic; few fine and medium roots; common very fine tubular pores; 5 percent cinders, neutral (pH 7.2); clear wavy boundary. (6 to 12 inches thick)
2C3--38 to 60 inches; brownish yellowish (10YR 6/6) loam, dark yellowish brown (10YR 4/4) moist; slightly hard, friable, slightly sticky and slightly plastic; few medium roots; few very fine tubular pores; trace of pebbles and cinders; mildly alkaline (pH 7.6).
TYPE LOCATION: Chelan County, Washington; about 8 miles northeast of Ardenvoir; along road 2729, 200 feet past spur road leading down Johnson Creek; 700 feet west and 1,800 feet north of the southeast corner of sec. 25 T. 27 N., R. 20 E.
RANGE IN CHARACTERISTICS: The upper part of the particle-size control section has an estimated moist bulk density of 0.65 to 0.85 g/cc, volcanic glass content of 30 to 60 percent, acid-oxalate extractable aluminum plus one-half of the acid-oxalate extractable iron of 1.0 to 2.0 percent, 15-bar water retention of 5 to 12 percent for air dried samples and 15 to 35 percent pumice. The lower part of the particle-size control section is 5 to 30 percent rock fragments and 12 to 18 percent clay. The mean annual soil temperature at 20 inch depth is estimated from 47 to 49 degrees F.
The A horizon has value of 2 or 3 moist and chroma of 2 or 3 dry and moist.
The Bw and C1 horizons have value of 5 through 7 dry, 3 or 4 moist and chroma of 2 through 4 dry and moist. Texture is cindery fine sandy loam or cindery sandy loam. Reaction is neutral or slightly acid.
The 2C horizon has value of 6 or 7 dry, 4 or 5 moist, and chroma of 3 through 6 dry and moist. It is loam or gravelly loam. Reaction is neutral or mildly alkaline.
COMPETING SERIES: These are the similar Antilon, Hardesty, and Mansonia soils. Antilon soils are cindery over loamy. Hardesty and Mansonia soils are ashy.
GEOGRAPHIC SETTING: Bisping soils are on broad ridgetops and mountainsides at elevations of 2,200 to 3,500 feet. Slopes are 3 to 60 percent. These soils formed in volcanic ash and cinders over material weathered from granodiorite or rhyolite. They are in a climate with warm, dry summers and cool, moist winters. The mean annual precipitation is about 18 to 30 inches; the mean annual temperature is about 45 to 47 degrees F. The growing season at 28 degrees F is about 160 to 200 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dinkelman, McCree, Palmich, and Tyee series. Dinkelman soils are frigid and coarse-loamy. McCree soils are loamy-skeletal. Palmich soils are cindery. Tyee soils are loamy and have paralithic contact at a depth of 10 to 20 inches.
DRAINAGE AND PERMEABILITY: Well drained, slow to rapid runoff; moderate permeability.
USE AND VEGETATION: Mostly for grazable woodland, wildlife habitat, watershed, and recreation. Some is used for pasture and cropland. Vegetation is ponderosa pine and Douglas-fir with an understory of pinegrass, antelope bitterbrush, arrowleaf balsamroot, pinegrass, bluebunch wheatgrass, and common snowberry.
DISTRIBUTION AND EXTENT: East Central Chelan County, Washington. This series of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Chelan County (Entiat Area) Washington, l972.
REMARKS: Diagnostic horizons and features recognized in this pedon are a mollic epipedon from the mineral surface to 10 inches, a cambic horizon from 10 to 19 inches, and a particle-size control section from 10 to 40 inches that is "ashy" from 10 to 30 inches and "coarse-loamy" loamy from 30 to 40 inches. This draft reflects a change in classification due to Andisol order from ashy over loamy, mixed, mesic Mollic Vitrandepts to ashy over loamy, mixed, mesic Mollic Vitrixerands.