PEDON DESCRIPTION

Print Date: 11/23/2009Country:
Description Date: 08/03/2007State: Washington
Describer: Toby RodgersCounty: Chelan
Site ID: 07-TMR-022 Rainy PassMLRA: 3 -- Olympic and Cascade Mountains
Site Note: Soil Survey Area: WA749 -- Okanogan National Forest Area, Washington
Pedon ID: 07WA007001Map Unit: 907 -- Andic Haplocryods-Typic Vitricryands, till substratum, complex, 5 to 25 percent slopes
Pedon Note: Quad Name: Washington Pass, Washington
Lab Source ID: SSLLocation Description: Rainy Pass Snotel site. Okanogan National Forest. Soil survey area WA749.
Lab Pedon #: 08N0358Legal Description: NW 1/4, SE 1/4 of Section 21, Township 35N, Range 17E
Soil Name as Described/Sampled: ChilliwackLatitude: 48 degrees 31 minutes 6.77 seconds north
Soil Name as Correlated: Longitude: 120 degrees 44 minutes 8.36 seconds west
Classification: Medial over sandy or sandy-skeletal, amorphic over isotic, euic Andic HaplocryodsDatum: NAD83
Pedon Type: within range of seriesUTM Zone: 10
Pedon Purpose: full pedon descriptionUTM Easting: 667205 meters
Taxon Kind: seriesUTM Northing: 5376413 meters
Associated Soils:
Physiographic Division: Primary Earth Cover: Tree cover
Physiographic Province: Secondary Earth Cover: Conifers
Physiographic Section: Existing Vegetation:
State Physiographic Area: Parent Material: mixed volcanic ash over glacial drift
Local Physiographic Area: Bedrock Kind: granite
Geomorphic Setting: on footslope of mountainbase of debris apron mountain slope on mountainsBedrock Depth:
Upslope Shape: linearBedrock Hardness:
Cross Slope Shape: linearBedrock Fracture Interval:
Particle Size Control Section: 25 to 100 cm.Surface Fragments: 1.0 percent 250- to 600-millimeter mixed rock fragments
Description origin: PedonPCDescription database: NSSL
Diagnostic Features: andic soil properties 2 to 76 cm.
umbric epipedon 2 to 20 cm.
albic horizon 5 to 10 cm.
spodic horizon 10 to 51 cm.
lithologic discontinuity 51 cm.



Cont. Site ID: 07-TMR-022 Rainy PassPedon ID: 07WA007001

Slope (%)Elevation (meters)Aspect (deg)MAAT (C)MSAT (C)MWAT (C)MAP (mm)Frost-Free DaysDrainage ClassSlope Length (meters)Upslope Length (meters)
22.01,463.0901.7

1,448
well


Oe--0 to 5 centimeters; moderately decomposed plant material; common fine roots throughout and common medium roots throughout and common very fine roots throughout; very abrupt wavy boundary. Lab sample # 08N02270

E--5 to 10 centimeters; dark brown (7.5YR 3/2) ashy gravelly sandy loam; 65 percent sand; 31 percent silt; 4 percent clay; moderate fine subangular blocky structure; very friable, soft, nonsticky, nonplastic; common fine roots throughout and common medium roots throughout and common coarse roots throughout and common very coarse roots throughout and common very fine roots throughout; 5 percent 2- to 5-millimeter mixed rock fragments and 5 percent 5- to 75-millimeter mixed rock fragments and 5 percent 75- to 250-millimeter mixed rock fragments; very strongly acid, pH 5.0; clear irregular boundary. Lab sample # 08N02271. NaF pH 9.2; Horizon sampled, weight of discarded >3 inch fraction (cobbles) = 7.5 lbs.

Bs--10 to 51 centimeters; dark brown (7.5YR 3/3) ashy gravelly sandy loam; 65 percent sand; 30 percent silt; 5 percent clay; moderate medium subangular blocky structure; very friable, slightly hard, nonsticky, nonplastic; common fine roots throughout and common medium roots throughout and common coarse roots throughout and common very fine roots throughout; 5 percent 2- to 5-millimeter mixed rock fragments and 5 percent 75- to 250-millimeter mixed rock fragments and 15 percent 5- to 75-millimeter mixed rock fragments; strongly acid, pH 5.4; clear irregular boundary. Lab sample # 08N02272. NaF pH >12; Horizon sampled, weight of discarded >3 inch fraction (cobbles) = 5.5 lbs.

2BC1--51 to 76 centimeters; dark yellowish brown (10YR 3/4) ashy very gravelly sandy loam; 65 percent sand; 31 percent silt; 4 percent clay; weak fine subangular blocky structure; very friable, slightly hard, nonsticky, nonplastic; common very fine roots throughout; 5 percent 250- to 600- millimeter mixed rock fragments and 10 percent 75- to 250-millimeter mixed rock fragments and 10 percent 2- to 5-millimeter mixed rock fragments and 25 percent 5- to 75-millimeter mixed rock fragments; moderately acid, pH 5.8; clear irregular boundary. Lab sample # 08N02273. NaF pH >12; Horizon sampled, weight of discarded >3 inch fraction (cobbles) = 4.5 lbs.

2BC2--76 to 127 centimeters; dark yellowish brown (10YR 3/6) very gravelly loamy coarse sand; 85 percent sand; 13 percent silt; 2 percent clay; single grain; loose, loose, nonsticky, nonplastic; 5 percent 75- to 250-millimeter mixed rock fragments and 5 percent 250- to 600-millimeter mixed rock fragments and 15 percent 2- to 5-millimeter mixed rock fragments and 30 percent 5- to 75-millimeter mixed rock fragments; neutral, pH 7.0. Lab sample # 08N02274. NaF pH >12; Horizon sampled, weight of >3 inch fraction (cobbles) = 6.5 lbs