IDENTIFIERS

  • Current Taxon Name (Soil Name): ALO
  • OSD
  • Series Extent
  • User Site ID: S1971CA059009
  • User Pedon ID: S1971CA059009
  • Vegetation Plot ID: S1971CA059009
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 71C0060
  • NCSS Pedon Lab Data NASIS Record ID - 43919
  • Print Date: 11/26/2024

    • LOCATION

  • Township: 6S
  • Range: 9W
  • PLSS Details: 50 feet south of road to Signal Peak; E 1/4, N 1/4 of 129
  • Location Description: Orange County, California. Irvine Ranch.
  • State: California
  • County: CA059—Orange
  • MLRA: 19—Southern California Coastal Plains and Mountains
  • Non-MLRA Soil Survey Area: CA678—Orange County and Part of Riverside County, California
  • 7.5 Minute USGS Quad: 33117-E6—San Juan Capistrano, California

    • PEDON

  • Current Taxonomic Class: Fine, smectitic Aridic Haploxererts
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 9
  • Correlated Information:
  • Soil Name - ALO
  • PSC - 25 to 74 cm.
  • Classificaton Date - 3/21/2002
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Alo
  • Classificaton Date - 6/1/1971
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: strongly sloping upland
  • Runoff: medium
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/1/1971 (actual site observation date)
  • Air Photo ID: AXK-2K-51
  • Surface Cover Properties:
  • 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

    2FA

    2GA

    —

    —

    Forb, annual

    Grass, annual

    —

    —

    —

    —

    —

    —
    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

    10

    —

    —

    176.8

    —

    0

    330

    —

    —

    16.6

    21.6

    11.6

    —

    —

    —

    —

    —

    —

    —

    —
    A11—0 to 4 centimeters (0.0 to 1.6 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; clay; strong coarse granular structure; very hard, firm, very sticky, very plastic; 3.0 very fine roots; 0.5 very fine tubular pores; fragments; slightly acid, pH 6.5; abrupt smooth boundary. Lab sample # 71C00379
    A12—4 to 33 centimeters (1.6 to 13.0 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; clay; strong very coarse prismatic structure; extremely hard, firm, very sticky, very plastic; 0.5 very fine roots; 0.5 very fine tubular pores; fragments; slightly acid, pH 6.5; clear wavy boundary. Lab sample # 71C00380
    A13—33 to 59 centimeters (13.0 to 23.2 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; clay; moderate coarse prismatic structure; extremely hard, firm, very sticky, very plastic; 0.5 very fine roots; 0.5 very fine tubular pores; 30 percent slickensides (pedogenic); fragments; slightly alkaline, pH 7.5; clear wavy boundary. Lab sample # 71C00381
    ACCA—59 to 74 centimeters (23.2 to 29.1 inches); dark grayish brown (10YR 4/2) and light olive brown (2.5Y 5/4), very dark grayish brown (10YR 3/2) and olive brown (2.5Y 4/4), moist; bedrock, clay; weak medium prismatic parts to weak medium angular blocky structure; very hard, friable, very sticky, very plastic; 0.1 very fine roots; 0.5 very fine tubular pores; medium weakly coherent cemented carbonate masses; fragments; strong effervescence; moderately alkaline, pH 8.0; clear wavy boundary. Lab sample # 71C00382
    C1CA—74 to 90 centimeters (29.1 to 35.4 inches); light olive brown (2.5Y 5/4), olive brown (2.5Y 4/4), moist; bedrock; moderate coarse platy structure; very hard; 0.1 very fine roots in cracks; fragments; strong effervescence; moderately alkaline, pH 8.0; gradual smooth boundary. Lab sample # 71C00383
    C2CA—90 to 115 centimeters (35.4 to 45.3 inches); light yellowish brown (2.5Y 6/4), light olive brown (2.5Y 5/4), moist; bedrock; moderate coarse platy structure; very hard; fragments; strong effervescence; moderately alkaline, pH 8.0; gradual smooth boundary. Lab sample # 71C00384
    C3—115 to 135 centimeters (45.3 to 53.1 inches); light yellowish brown (2.5Y 6/4), light olive brown (2.5Y 5/4), moist; bedrock; moderate coarse platy structure; very hard; fragments; moderately alkaline, pH 8.0; gradual smooth boundary. Lab sample # 71C00385
    C4—135 to 145 centimeters (53.1 to 57.1 inches); light yellowish brown (2.5Y 6/4), light olive brown (2.5Y 5/4), moist; bedrock; moderate coarse platy structure; very hard; fragments; moderately alkaline, pH 8.0. Lab sample # 71C00386