LOCATION BORLAND WAEstablished Series
TAXONOMIC CLASS: Loamy, mixed, superactive, mesic Lithic Argixerolls
TYPICAL PEDON: Borland loam, under grass shrub vegetation on a 50 percent south facing slope at an elevation of 1,800 feet. This soil was dry when described. (Colors are dry soil unless otherwise noted. All textures ae apparent field textures)
A1--0 to 3 inches; grayish brown (10YR 5/2) loam, very dark grayish brown (10YR 3/2) moist; weak medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine and fine roots; common fine and very fine interstitial pores; few hard sandstone pebbles, neutral (pH 7.0); gradual wavy boundary. (2 to 4 inches thick)
A2--3 to 6 inches; brown (10YR 5/3) loam, very dark grayish brown (10YR 3/2) moist; weak medium subangular blocky structure; soft, friable, nonsticky and slightly plastic; many fine and very fine roots; very few fine interstitial pores; few hard sandstone pebbles, mildly alkaline (pH 7.6); gradual wavy boundary. (2 to 4 inches thick)
Bt--6 to 11 inches; yellowish brown (10YR 5/4) clay loam, dark brown (10YR 4/3) moist; moderate medium subangular structure; slightly hard, firm, slightly sticky and slightly plastic; common fine and very fine roots; common very fine and fine interstitial pores; few hard sandstone pebbles; mildly alkaline (pH 7.6); abrupt wavy boundary. (4 to 6 inches thick)
R--11 inches; sandstone.
TYPE LOCATION: Chelan County, Washington; about 3 miles northwest of Cashmere; 500 feet west and 250 feet north of center sec. 30, T. 24 N., R. 19E.
RANGE IN CHARACTERISTICS: Solum thickness and depth to lithic contact is 10 to 20 inches. These soils are usually moist but are dry in the moisture control section for 90 to 105 days following summer solstice. The mean annual soil temperature is 47 to 50 degrees F. There are 0 to 5 percent coarse fragments in profile.
The A horizons have value of 4 or 5 dry and chroma is 2 or 3 or moist. Structure is weak medium or fine granular. Reaction is neutral or mildly alkaline.
The B horizon has value of 4 or 5 moist and chroma is 3 or 4 dry or moist. Structure is weak or moderate medium or fine subangular blocky. Texture is clay loam, heavy loam or sandy clay loam. Reaction is mildly alkaline or neutral.
COMPETING SERIES: These are the Jilson, McQuarrie, Pass Canyon and Terca series. Jilson soils are 15 to 35 percent rock fragments in the particle-size control section and are dry for more than 105 days. McQuarrie soils have segregated lime in the lower part of the Bt horizon. Pass Canyon soils are more than 5 percent rock fragments in the particle-size control section.
GEOGRAPHIC SETTING: Borland soils are on foothills and mountains that have a southerly or westerly aspect. Elevation is 1,000 to 3,800 feet. Sloes are 30 to 90 percent. These soils formed in residuum and colluvium from sandstone mixed with loess in the upper part. They are in a climate with warm, dry summers and cool, moist winters. The average annual precipitation is 14 to 18 inches. The mean annual January temperature is about 25 degrees F. The mean July temperature is about 69 degrees F, and the mean annual temperature is about 48 degrees F. The frost-free season at 32 degrees F is about 130 days to 165 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bjork, Cowiche, Blag, and CleElum soils. Bjork and Cowiche soils have an aridic moisture regime. Blag soils have an ochric epipedon and a cambic horizon. CleElum soils are 20 to 40 inches deep.
DRAINAGE AND PERMEABILITY: Well drained; rapid and very rapid runoff; moderately slow permeability.
USE AND VEGETATION: Range, wildlife habitat, recreation and watershed. Vegetation is bluebunch wheatgrass, prairie junegrass, arrowleaf balsamroot, lomatium, lupine, yarrow, antelope bitterbrush, elderberry, and scattered ponderosa pine trees.
DISTRIBUTION AND EXTENT: Eastern Chelan County, Washington. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES PROPOSED: Chelan County, Washington, 1985.
REMARKS: There soils were formerly called Bjork Variant. Diagnostic horizons and features recognized in this pedon are a mollic epipedon from the surface to 6 inches, an argillic horizon from 6 to 11 inches, and a lithic contact at 11 inches.