IDENTIFIERS

  • Current Taxon Name (Soil Name): Pleasanton
  • OSD
  • Series Extent
  • User Site ID: S1978CA001000
  • User Pedon ID: 78CA001000
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 79P0089
  • NCSS Pedon Lab Data NASIS Record ID - 46273
  • Print Date: 4/20/2024

    • 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: 37.6546326
  • Std. Longitude: -121.7174225
  • Datum: WGS84
  • Township: 3S
  • Range: 2E
  • Section: 24
  • PLSS Details: About 8 km SE of the center of Livermore SE 1/4 NE 1/4 NE 1/4
  • Location Description: Alameda County, CA.
  • State: California
  • County: CA001—Alameda

    • PEDON

  • Describers Name: LEW/GMK
  • Current Taxonomic Class: Fine-loamy, mixed, thermic Mollic Haploxeralfs
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Correlated Information:
  • Soil Name - Pleasanton
  • Classificaton Date - 4/25/2008
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Pleasanton
  • Classificaton Date - 10/1/1978
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: upland
  • Landform: terrace—stream or lake
  • Runoff: medium
  • Drainage Class: poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/1/1978 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • 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

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    —

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    400

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    1Ap—0 to 23 centimeters (0.0 to 9.1 inches); grayish brown (10YR 5/2) interior, very dark grayish brown (10YR 3/2) interior, moist; fine sandy loam; massive; hard, friable, slightly sticky, slightly plastic; 5.5 very fine roots and 2.5 fine and medium roots; 2.5 very fine and fine interstitial pores; fragments; slightly acid, pH 6.3, hellige-truog; abrupt smooth boundary. Lab sample # 79P00464. many very fine roots; common fine and medium roots
    1A1—23 to 53 centimeters (9.1 to 20.9 inches); grayish brown (10YR 5/2) interior, very dark grayish brown (10YR 3/2) interior, moist; fine sandy loam; massive; hard, friable, slightly sticky, slightly plastic; 5.5 very fine roots and 2.5 fine and medium roots; 2.5 very fine and fine interstitial pores; fragments; neutral, pH 6.8, hellige-truog; clear smooth boundary. Lab sample # 79P00465. Similar to Ap horizon.; many very fine roots; common fine and medium roots
    1B2t—53 to 122 centimeters (20.9 to 48.0 inches); brown (10YR 4/3) interior, dark brown (10YR 3/3) interior, moist; sandy clay loam; moderate medium subangular blocky structure; very hard, friable, moderately sticky, moderately plastic; 2.5 very fine and fine roots; 5.5 very fine and fine tubular and 0.5 medium tubular pores; 37 percent clay films on faces of peds and 37 percent clay films in root channels and/or pores; fragments; neutral, pH 7.3, hellige-truog; gradual wavy boundary. Lab sample # 79P00466. common clay films surface features on faces of peds; common clay films surface features in root channels and/or pores; common very fine and fine roots
    1B3—122 to 163 centimeters (48.0 to 64.2 inches); brown (10YR 4/3) interior, dark brown (10YR 3/3) interior, moist; gravelly loam; weak medium subangular blocky structure; very hard, friable, moderately sticky, moderately plastic; 0.5 very fine roots; 5.5 very fine tubular and 2.5 fine tubular pores; 15 percent clay films on faces of peds and 15 percent clay films in root channels and/or pores and 15 percent clay films on faces of peds; fragments; neutral, pH 7.3, hellige-truog; gradual wavy boundary. few clay films surface features on faces of peds; few clay films surface features in root channels and/or pores; few clay films surface features on faces of peds; few very fine roots
    1C1—163 to 183 centimeters (64.2 to 72.0 inches); yellowish brown (10YR 5/4) interior, dark yellowish brown (10YR 4/4) interior, moist; gravelly fine sandy loam, gravelly loam; weak blocky structure; hard, friable, moderately sticky, slightly plastic; 5.5 very fine tubular and 2.5 fine tubular pores; 15 percent clay films in root channels and/or pores and 15 percent clay films on faces of peds; fragments; slightly alkaline, pH 7.4, hellige-truog. Few medium pores.; few clay films surface features in root channels and/or pores; few clay films surface features on faces of peds