LOCATION CHELAN WAEstablished Series
TAXONOMIC CLASS: Ashy, glassy, mesic Vitritorrandic Haploxerolls
TYPICAL PEDON: Chelan fine sandy loam, wheatland on a 12 percent northwest slope at an elevation of 1,550 feet. (Colors are for dry soil unless otherwise stated. All textures are apparent field textures.)
Ap--0 to 4 inches; grayish brown (10YR 5/2) fine sandy loam, very dark grayish brown (10YR 3/2) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine and fine roots; few very fine and fine interstitial and tubular pores; 5 percent sand-size pumice 0.5 to 2.0 mm in diameter and 5 percent pumice 2 to 5 mm in diameter; neutral (pH 6.6); clear smooth boundary. (3 to 5 inches thick)
A--4 to 10 inches; brown (10YR 5/3) fine sandy loam, dark brown (10YR 3/3) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine and fine roots, few very fine and fine interstitial and tubular pores; 5 percent sand-size pumice, 0.5 to 2.0 mm. in diameter and 5 percent pumice 2 to 5 mm in diameter; neutral (pH 6.6); gradual wavy boundary. (6 to 8 inches thick)
Bw1--10 to 20 inches; brown (10YR 5/3) fine sandy loam, dark yellowish brown (10YR 3/4) moist; weak medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine and fine roots; few very fine and fine interstitial and tubular pores; 5 percent sand-size pumice 0.5 to 2.0 mm. in diameter and 5 percent pumice 2 to 5 mm in diameter; neutral (pH 6.7); gradual wavy boundary. (8 to 12 inches thick)
Bw2--20 to 30 inches; yellowish brown (10YR 5/4) fine sandy loam; brown to dark brown (10YR 4/3) moist; soft, friable, nonsticky and nonplastic; common very fine roots; few very fine interstitial and tubular pores; 5 percent sand-size pumice, 0.5 to 2.0 mm in diameter and 5 percent pumice 2 to 5 mm in diameter; neutral (pH 7.1); gradual smooth boundary. (8 to 12 inches thick)
Bw3--30 to 43 inches; yellowish brown (10YR 5/4) fine sandy loam; dark yellowish brown (10YR 4/4) moist; soft, very friable, nonsticky and nonplastic; few very fine roots; few very fine and few interstitial and tubular pores; 5 percent sand-size pumice, 0.5 to 2.0 mm in diameter and 10 percent pumice 2 to 5 mm in diameter; 5 percent stones and 2 percent pebbles from igneous rocks; neutral (pH 7.2); abrupt wavy boundary. (10 to 15 inches thick)
2Bkqm--43 to 57 inches; light gray (10YR 7/1) weakly cemented duripan; crushes to very cobbly sandy loam; grayish brown (10YR 5/2) moist; massive; hard, very firm, nonsticky and nonplastic; few very fine tubular pores; 20 percent cobbles, 10 percent pebbles and 5 percent stones from igneous rocks; strongly effervescent; common fine filaments of secondary carbonates; very strongly alkaline (pH 9.4); gradual wavy boundary (12 to 16 inches thick)
2Cdk--57 to 60 inches; light gray (10YR 7/1) cobbly fine sandy loam, gray (10YR 6/1) moist; massive; hard, firm, nonsticky and nonplastic; common very fine and fine vesicular and tubular pores; common fine filaments of secondary carbonates; strongly effervescent; 10 percent pebbles, 15 percent cobbles and 5 percent stones; very strongly alkaline (pH 9.4).
TYPE LOCATION: Douglas County, Washington; approximately 2 miles northeast of Beebe; about 2,600 feet east and 1,600 feet north of the southwest corner section 15, T. 27 N., R. 23 E.; (Latitude 47 degrees 50 minutes 5 seconds N, Longitude 119 degrees 50 minutes 30 seconds W)
RANGE IN CHARACTERISTICS: The mean annual soil temperature is 51 to 53 degrees F. These soils are usually dry in the moisture control section for one-half to three-fourths of the time when the soil temperature is above 40 degrees F. The mollic epipedon is 9 to 13 inches thick. The 10 to 40 inch, particle-size control section has moist bulk density of 1.10 to 1.25 g/cc, 30 to 60 percent volcanic glass content, including 5 to 15 percent sand-size pumice, 0.5 to 2.0 mm diameter and 5 to 10 percent pumice, 2 to 5 mm in diameter, acid-oxalate extractable aluminum plus one-half of the acid-oxalate extractable iron of 0.15 to 0.40 percent 15-bar water retention of 5 to 10 percent, 5 to 20 percent rock fragments and an apparent field estimated clay content of 3 to 10 percent. Depth to a weakly or moderately cemented duripan is 40 to 60 or more inches. Some phases have granitic bedrock, extremely cobbly sand, fine sandy loam or noncemented very cobbly sandy loam substratum from 40 to 60 inches.
The A horizon has value 4 or 5 dry and 2 or 3 moist.
The Bw horizons have hue 10YR or 2.5Y. Value is 5,6 or 7 dry and 3 or 4 moist, chroma is 2, 3 or 4 dry and moist. It is fine sandy loam, sandy loam or very fine sandy loam or very fine sandy loam. The lower part is gravelly or cobbly in some pedons. It is neutral to slightly alkaline.
The 2Bkqm horizon has value of 5 through 7 dry and 5 or 6 moist. Chroma is 1,2 or 3 moist or dry. It is weakly or moderately cemented duripan and has 25 to 35 percent rock fragments. Fine earth texture is fine sandy loam or sandy loam when crushed. Reaction is slightly to very strongly alkaline.
The 2Cdk horizon has moist value of 5 or 6. Chroma is 1 or 2 moist or dry. It has 30 to 40 percent rock fragments. Fine earth texture is fine sandy loam or sandy loam. Reaction is slightly to very strongly alkaline.
COMPETING SERIES: These are the Bitner, Brays, DelRio, Deskamp, Dryhollow, Emagert, Kester, Winblow and Yellowhills series. The DelRio series is in depressions and lack pumice over 2mm in size and have rare flooding on nearly level to gently sloping areas. Dryhollow series average over 25 percent pumice greater than 2 mm in lower part of control section. Bitner, Brays, Deskamp, Kester and Widblow series are moderately deep to bedrock. Yellowhills series has 60 to 80 percent volcanic glass in the particle-size control section. Emagert soils have a mean annual soil temperature of 47 to 50 degrees F., a field estimated clay content of 18 to 27 percent and a mollic epipedon of 24 to 48 inches. Weezweed soils have a mean annual soil temperature of 47 to 50 degrees F., 60 to 90 percent glass and field estimated clay content of 18 to 27 percent.
GEOGRAPHIC SETTING: Chelan soils are on terraces and side slopes leading up to upland plateau. Slopes are 0 to 65 percent. The soils formed in mixed loess, volcanic ash and pumice primarily over weakly cemented duripan and dense granitic glacial till. Some phases are over granitic bedrock, glacial outwash, fine sandy loam or noncemented glacial till at 40 to 60 or more inches depth. Elevation is 1,000 to 2,200 feet. The climate is characterized by warm, dry summers and cool, moist winters. Average annual precipitation is 9 to 12 inches. Average January temperature is about 25 degrees F.; average July temperature is about 70 degrees F.; and average annual temperature is 49 to 51 degrees F. Frost-free season is 145 to 200 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Antilon, Entiat, Supplee and Wellsdam series. Antilon soils are on terraces and are underlain by silty clay substratums. Entiat soils are shallow to bedrock. Supplee soils are on terraces and are moderately deep to sandy-skeletal outwash. Wellsdam soils are on sideslopes and are moderately deep to duripan.
DRAINAGE AND PERMEABILITY: Well drained, very slow to very rapid runoff; moderately rapid permeability; moderately slow permeability through the noncemented very cobbly sandy loam till, slow permeability through the duripan or very rapid through the sandy-skeletal outwash, if present, at 40 or more inches depth.
USE AND VEGETATION: Irrigated orchards, dryland grain production and livestock grazing. Native vegetation is bluebunch wheatgrass, Idaho fescue, Prairie junegrass, big sagebrush and antelope bitterbrush.
DISTRIBUTION AND EXTENT: Douglas and Chelan counties, Washington. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Chelan County, Washington, 1969.
REMARKS: Diagnostic features and horizons recognized in this pedon are a mollic epipedon from surface to 10 inches, cambic horizon from 10 to 43 inches and weakly cemented duripan from 43 to 57 inches. There is 30 to 60 percent volcanic glass in the control section. The particle size control section is zone from 10 to 40 inches. (Bw horizon).
The classification was changed from medial, mesic Andic Xerochrepts to ashy, mesic Vitritorrandic Haploxerolls. The type location was changed to the lab characterization site.
ADDITIONAL DATA: Classification based on NSSL lab data pedon number 86P0209.