LOCATION LINE WA

Established Series
Rev. VB/KWH/TLA
03/2012

LINE SERIES

The Line series consists of very deep, well drained soils formed in volcanic ash and pumice overlying glacial outwash. Line soils are on terraces. Slopes are 3 to 65 percent. The mean annual precipitation is about 75 inches and the mean annual temperature is about 41 degrees F.

TAXONOMIC CLASS: Ashy over sandy or sandy-skeletal, glassy over isotic Spodic Vitricryands

TYPICAL PEDON: Line cindery ashy fine sandy loam - under coniferous forest on a 23 percent north-facing terrace slope at an elevation of 2,400 feet. (Colors are for dry soil unless otherwise stated. All textures are apparent field textures.)

Oi--0 to 4 inches; slightly decomposed needles and twigs.

E--4 to 5 inch; light gray (10YR 7/1) ashy loamy fine sand, dark grayish brown (10YR 4/2) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; many fine and medium roots; many fine irregular pores; 10 percent gravel; NaF pH 9.4; extremely acid (pH 4.4); abrupt smooth boundary. (1/4 to 1 inch thick)

Bs1--5 to 8 inches; light yellowish brown (10YR 6/4) paragravelly ashy fine sandy loam, dark yellowish brown (10YR 4/4) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; many fine, medium, and coarse roots; many fine irregular pores; 10 percent gravel and 15 percent pumice paragravel; NaF pH 9.4; slightly acid (pH 6.1); clear wavy boundary. (4 to 9 inches thick)

Bs2--8 to 19 inches; light yellowish brown (10YR 6/4) very paragravelly ashy sandy loam, dark yellowish brown (10YR 4/4) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; common fine, medium, and coarse roots; many fine irregular pores; 10 percent gravel and 30 percent pumice paragravel; NaF pH 9.4; slightly acid (pH 6.4); clear wavy boundary. (10 to 20 inches thick)

2BC--19 to 35 inches; pale yellow (2.5Y 7/4) very gravelly loamy sand, olive brown (2.5Y 4/4) moist; massive; soft, friable, nonsticky and nonplastic; common fine and medium roots; many fine and common medium irregular pores; 40 percent gravel, 5 percent cobbles, and 15 percent pumice paragravel; neutral (pH 6.6); abrupt wavy boundary. (4 to 10 inches thick)

2C--35 to 64 inches; light brownish gray (2.5Y 6/2) extremely gravelly coarse sand, dark grayish brown (2.5Y 4/2) moist; single grain; loose; few fine roots; many coarse irregular pores; 50 percent gravel and 20 percent cobbles; neutral (pH 6.6).

TYPE LOCATION: Chelan County, Washington; about 6 miles west of Lake Wenatchee; 800 feet east of the northwest corner of sec. l4, T. 27 N., R 15 E.

RANGE IN CHARACTERISTICS: The mean annual soil temperature is 40 to 42 degrees F. The soils are usually moist, but are dry in the soil moisture control section for 30 to 45 consecutive days during summer and fall. The upper 15 to 25 inches of the 0 to 40 inch particle-size control section has an estimated moist bulk density of 0.80 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, and 15-bar water retention of 5 to 12 percent for air dried samples. It has 0 to 40 pumice and 0 to 40 percent gravel with a weighted average of less than 35 percent. Depth to the 2C horizon is 20 to 40 inches.

The E horizon has hue of 5YR, 7.5YR, or 10YR value of 5 or 7 dry, 4 or 5 moist, and chroma of 1 or 2.

The Bs horizon has hue of 10YR, 7.5YR, or 5YR value of 5 or 6 dry, 3 or 4 moist, and chroma of 3 through 6 dry or moist. Below 10 inches the texture is paragravelly ashy fine sandy loam, very paragravelly ashy fine sandy loam, paragravelly ashy sandy loam, very paragravelly ashy sandy loam, very gravelly ashy sandy loam, gravelly ashy sandy loam, or gravelly ashy fine sandy loam. Some pedons have BC or C horizons. Reaction is slightly acid or neutral.

The 2C horizon is very gravelly coarse sand, extremely gravelly coarse sand, extremely gravelly sand, or extremely cobbly coarse sand. Reaction is slightly acid or neutral.

COMPETING SERIES: There are no competing series.

GEOGRAPHIC SETTING: Line soils are on terraces, fans and terrace escarpments at elevations of 1,800 to 3,000 feet. Slopes are 3 to 65 percent. These soils formed in volcanic ash and pumice over glacial outwash. They are in a climate with warm dry summers and cold moist winters. The mean annual precipitation is 65 to 90 inches. The mean January temperature is about 20 degrees F, and the mean July temperature is about 59 degrees F. The mean annual temperature is 38 to 40 degrees F. The growing season at 28 degrees F is about 120 to 150 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Vabus and Saska soils. Vabus soils are medial-skeletal. Saska soils are medial over loamy- skeletal.

DRAINAGE AND PERMEABILITY: Well drained, slow to rapid runoff, moderately permeability in the subsoil and very rapid permeability in the substratum.

USE AND VEGETATION: Commercial woodland, wildlife habitat, watershed and recreation. Vegetation is western hemlock, Douglas-fir, Pacific silver fir, lodgepole pine and western red cedar with an understory of huckleberry, princes pine, western brackenfern, and pachystima.

DISTRIBUTION AND EXTENT: East slopes of the Cascade Mountains in west- central Chelan County. Washington; MLRA 3. The series is of small extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Chelan County, Washington, 1995.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Albic horizon - the zone from the mineral surface to 1 inch
Cambic horizon - the zone from 5 to 19 inches that does not qualify as spodic materials due to high pH and failing to meet color requirement.
Particle-size control section - the zone from 4 to 44 inches with 4 to 19 inches qualifying as ashy and 19 to 44 inches as sandy-skeletal.

Pedon has been redescribed during Lab sampling, this descriptions reflects a change in classification due to Andisols order from sandy-skeletal Typic Cryorthods to ashy over sandy or sandy-skeletal Typic Vitricryands.

Classification revised 07/04 from Typic Vitricryands to Spodic Vitricryands based on 9th edition of Keys to Soil Taxonomy.

ADDITIONAL DATA: Laboratory data are available for this pedon, NSSL pedon number 87P753.

National Cooperative Soil Survey
U.S.A.