IDENTIFIERS

  • Current Taxon Name (Soil Name): Apt
  • OSD
  • Series Extent
  • User Site ID: S1998OR003004
  • User Pedon ID: S1998OR003004
  • Vegetation Plot ID: S1998OR003004
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 99P0178
  • NCSS Pedon Lab Data NASIS Record ID - 11037
  • Print Date: 4/28/2025

    • LOCATION

  • Location In Web Soil Survey
  • AOI is roughly a square mile and pedon is marked in the center.
  • Location in SoilWeb
  • Location in Google Maps
  • Std. Latitude: 44.4511108
  • Std. Longitude: -123.4769440
  • Datum: WGS84
  • Township: 13S
  • Range: 7W
  • Section: 12
  • PLSS Details: about 1400 feet N and 330 feet W of SE corner
  • State: Oregon
  • County: OR003—Benton
  • MLRA: 1—Northern Pacific Coast Range, Foothills, and Valleys
  • Non-MLRA Soil Survey Area: OR003—Benton County, Oregon
  • 7.5 Minute USGS Quad: 44123-D4—Flat Mountain, Oregon

    • PEDON

  • Describers Name: Matthew Fillmore
  • Current Taxonomic Class: Fine, mixed, active, mesic Typic Palehumults
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 4
  • Correlated Information:
  • Soil Name - Apt
  • Classificaton Date - 1/27/2010
  • Sampled As Information:
  • Soil Name - Apt
  • Taxonomic Class - Fine, isotic, mesic Typic Haplohumult
  • Taxon Kind - series
  • Classificaton Date - 12/8/1998
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: mountain
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: footslope
  • Slope Position: lower third
  • Slope Shape Across: concave
  • Slope Shape Down: linear
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: s moderate weathered siltstone, unspecified with <10
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 12/8/1998 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - intermixed conifers and hardwoods
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    ACTR

    BENE2

    COCO6

    GASH

    HODI

    MANEN

    POMU

    PSME

    TSHE

    VAPA

    VIOLA

    Achlys triphylla

    Berberis nervosa

    Corylus cornuta

    Gaultheria shallon

    Holodiscus discolor

    Mahonia nervosa var. nervosa

    Polystichum munitum

    Pseudotsuga menziesii

    Tsuga heterophylla

    Vaccinium parvifolium

    Viola

    sweet after death

    —

    beaked hazelnut

    salal

    oceanspray

    cascade Oregongrape

    western swordfern

    Douglas-fir

    western hemlock

    red huckleberry

    violet

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    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    umbric epipedon

    argillic horizon

    0—14

    20—78

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    Setting and Climate
    Slope Slope Length USLE Upslope Length Elev. Corr. Elev Aspect MAP REAP FFD MAAT MSAT MWAT MAST MSST MWST MFFP PE Index Climate Station ID Climate Station Name Climate Station Type
    % m degrees mm mm C mm

    24

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    360

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    275

    80

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    A1—0 to 8 centimeters (0.0 to 3.1 inches); dark brown (7.5YR 3/2) exterior, brown (7.5YR 4/3) exterior, dry; gravelly clay loam; moderate fine granular structure; slightly hard, friable, slightly sticky, slightly plastic; moderately smeary; moderate permeability; 3.0 very fine and fine roots throughout and 2.0 medium roots throughout; 3.0 very fine and fine moderate-continuity interstitial and 2.0 medium and coarse low-continuity interstitial pores; 15 percent by volume subrounded 2-39-75 millimeter siltstone, unspecified fragments; strongly alkaline, pH 9.0, hellige-truog; clear smooth boundary. Lab sample # 99P00910; moist when described;. moderately smeary
    A2—8 to 36 centimeters (3.1 to 14.2 inches); dark brown (7.5YR 3/3) exterior, brown (7.5YR 4/4) exterior, dry; gravelly silty clay loam; moderate very fine and fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; moderately smeary; moderate permeability; 3.0 very fine and fine roots throughout and 2.0 medium roots throughout; 3.0 very fine and fine moderate-continuity tubular and 2.0 medium moderate-continuity tubular pores; 15 percent by volume subrounded 2-39-75 millimeter siltstone, unspecified fragments; very strongly alkaline, pH 9.5, hellige-truog; clear wavy boundary. Lab sample # 99P00911; moist when described;. moderately smeary
    AB—36 to 51 centimeters (14.2 to 20.1 inches); dark brown (7.5YR 3/4) exterior, brown (7.5YR 5/4) exterior, dry; silty clay loam; moderate fine subangular blocky structure; hard, firm, moderately sticky, moderately plastic; weakly smeary; moderate permeability; 2.0 very fine to medium roots throughout and 1.0 coarse roots throughout; 3.0 very fine and fine moderate-continuity tubular and 2.0 medium moderate-continuity tubular and 1.0 coarse low-continuity tubular pores; 10 percent by volume subrounded 2-39-75 millimeter siltstone, unspecified fragments; very strongly alkaline, pH 9.5, hellige-truog; clear wavy boundary. Lab sample # 99P00912; moist when described;. weakly smeary
    Bt1—51 to 107 centimeters (20.1 to 42.1 inches); dark yellowish brown (10YR 4/4) exterior, light yellowish brown (10YR 6/4) exterior, dry; silty clay; moderate fine and medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; moderately slow permeability; 1.0 very fine to coarse roots throughout and 2.0 medium roots throughout; 3.0 very fine and fine moderate-continuity tubular and 1.0 medium and coarse low-continuity tubular pores; 30 percent faint clay films on faces of peds and in pores; 10 percent by volume subrounded 2-39-75 millimeter siltstone, unspecified fragments; very strongly alkaline, pH 9.5, hellige-truog; gradual wavy boundary. Lab sample # 99P00913; moist when described;. continuous - phpvsfiid 200764; continuous - phpvsfiid 200764
    Bt2—107 to 142 centimeters (42.1 to 55.9 inches); dark yellowish brown (10YR 4/4) exterior, light yellowish brown (10YR 6/4) exterior, dry; silty clay; moderate medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; moderately slow permeability; 1.0 very fine to coarse roots throughout and 2.0 medium roots throughout; 3.0 very fine moderate-continuity tubular and 1.0 medium and coarse low-continuity and 2.0 fine low-continuity tubular pores; 75 percent distinct clay films on faces of peds and in pores; 10 percent by volume subrounded 2-39-75 millimeter siltstone, unspecified fragments; very strongly alkaline, pH 9.5, hellige-truog; gradual wavy boundary. Lab sample # 99P00914; moist when described;. continuous - phpvsfiid 200765; continuous - phpvsfiid 200765
    Bt3—142 to 157 centimeters (55.9 to 61.8 inches); dark yellowish brown (10YR 4/6) exterior, very pale brown (10YR 7/4) exterior, dry; silty clay loam; moderate medium and coarse subangular blocky structure; hard, firm, moderately sticky, moderately plastic; moderately slow permeability; 1.0 very fine to coarse roots throughout; 2.0 very fine and fine moderate-continuity tubular and 1.0 medium and coarse low-continuity tubular pores; 75 percent prominent clay films on faces of peds and in pores; 10 percent by volume subrounded 2-39-75 millimeter siltstone, unspecified fragments and 15 percent by volume rounded siltstone, unspecified fragments; strongly alkaline, pH 9.0, hellige-truog; gradual wavy boundary. Lab sample # 99P00915; moist when described;. continuous - phpvsfiid 200766; continuous - phpvsfiid 200766
    BCt—157 to 198 centimeters (61.8 to 78.0 inches); yellowish brown (10YR 5/6) exterior, very pale brown (10YR 7/4) exterior, dry; silty clay loam; weak medium and coarse subangular blocky structure; hard, firm, moderately sticky, moderately plastic; moderately slow permeability; 1.0 very fine to coarse roots throughout; 2.0 fine and medium low-continuity tubular and 1.0 coarse low-continuity tubular pores; 75 percent prominent clay films on faces of peds and in pores; 10 percent by volume subrounded 2-39-75 millimeter siltstone, unspecified fragments and 20 percent by volume rounded siltstone, unspecified fragments; strongly alkaline, pH 9.0, hellige-truog; gradual wavy boundary. Lab sample # 99P00916; moist when described;. continuous - phpvsfiid 200767; continuous - phpvsfiid 200767
    Cr—198 to 224 centimeters (78.0 to 88.2 inches); 1.0 very fine to coarse roots throughout; 1.0 fine to coarse low-continuity tubular pores; fragments. highly weathered siltstone