IDENTIFIERS

  • Current Taxon Name (Soil Name): Sepulveda
  • OSD
  • Series Extent
  • Local Phase: natural substratum
  • User Site ID: S2014CA037001
  • User Pedon ID: S2014CA037001
  • Vegetation Plot ID: S2014CA037001
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - KSSL
  • Lab Pedon # - 14N0532
  • NCSS Pedon Lab Data NASIS Record ID - 79459
  • Print Date: 4/24/2025

    • 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: 33.7823056
  • Std. Longitude: -118.1342222
  • Datum: WGS84
  • Location Description: On street buffer 50 feet south of Anaheim St and 600 feet west of insersection with Pacific Coast Highway 1. at Recreation Park (18 Hole Golf Course in Long Beach) between Hole number 6 fence and Anaheim St
  • Map Unit: 1132—Urban land-Thums-Windfetch complex, 0 to 5 percent slopes
  • Country: US—United States
  • Non-MLRA Soil Survey Area: CA696—Los Angeles County, California, Southeastern Part
  • 7.5 Minute USGS Quad: 33118-G2—Long Beach (digital), California

    • PEDON

  • Describers Name: Randy L Riddle, Beverly Harben, and Kit Paris
  • Current Taxonomic Class: Fine-loamy, spolic, mixed, superactive, calcareous, thermic Typic Xerorthents
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: NASIS
  • Correlated Information:
  • Soil Name - Sepulveda
  • PSC - 25 to 79 cm.
  • Classificaton Date - 5/6/2016
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Thums
  • Taxonomic Class - Fine, smectitic, thermic Calcic Argixerolls
  • Taxon Kind - taxadjunct
  • PSC - 27 to 77 cm.
  • Classificaton Date - 4/29/2014
  • Classifier - Randy L Riddle
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - xeric
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: localized human-transported material over old alluvium
  • Landscape: coastal plain
  • Landform: uplifed alluvial fan
  • Anthropogenic Feature: leveled land
  • Geomorphic Component Hills: interfluve
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: very low
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/21/2014 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - urban and built-up
  • 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

    POA

    Poa

    bluegrass

    —

    —

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

    anthropic epipedon

    human-transported material

    secondary carbonates

    argillic horizon

    0—27

    0—79

    79—200

    140—200

    —48—

    —-

    —121—

    —152—
    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

    3

    —

    —

    16

    —

    50

    356

    —

    355

    17

    —

    —

    18

    —

    —

    —

    —

    —

    —

    —
    ^A—0 to 4 centimeters (0.0 to 1.6 inches); very dark brown (10YR 2/2), very dark brown (10YR 2/2), dry; loam; 29 percent sand; 47 percent silt; 24 percent clay; strong medium granular structure; moderately hard, friable, slightly sticky, slightly plastic; many very fine roots and common medium roots; common fine tubular pores; fragments; 1 percent by volume irregular concrete; slight effervescence; slightly alkaline, pH 7.6; clear wavy boundary. Lab sample # 14N03393. effervescence attributed to presence of crushed concrete mixed into horizon
    ^Cu—4 to 27 centimeters (1.6 to 10.6 inches); very dark brown (10YR 2/2), very dark brown (10YR 2/2), dry; clay loam; 27 percent sand; 46 percent silt; 27 percent clay; moderate medium subangular blocky parts to moderate fine subangular blocky structure; hard, friable, moderately sticky, moderately plastic; common very fine roots; many very fine tubular pores; distinct clay films on all faces of peds; 1 percent by volume subrounded 5-37-75 millimeter mixed fragments and 1 percent by volume subrounded 2-4-5 millimeter mixed fragments; 1 percent by volume irregular concrete; slight effervescence; moderately alkaline, pH 8.1; clear smooth boundary. Lab sample # 14N03394. effervescence attributed to presence of crushed concrete mixed into horizon
    ^Bt1—27 to 48 centimeters (10.6 to 18.9 inches); very dark grayish brown (10YR 3/2), dark brown (10YR 3/3), dry; clay loam; 27 percent sand; 42 percent silt; 31 percent clay; moderate medium prismatic parts to moderate medium subangular blocky structure; hard, friable, very sticky, very plastic; few very fine roots; many very fine tubular and few fine tubular pores; distinct dark brown (10YR 3/3) clay films on all faces of peds; fragments; noneffervescent; slightly alkaline, pH 7.8; clear wavy boundary. Lab sample # 14N03395
    ^Bt2—48 to 79 centimeters (18.9 to 31.1 inches); dark yellowish brown (10YR 3/4), brown (10YR 4/3), dry; clay loam; 26 percent sand; 44 percent silt; 30 percent clay; strong medium subangular blocky structure; very hard, firm, very sticky, very plastic; few very fine roots; many very fine tubular and common fine tubular pores; distinct dark brown (10YR 3/3) clay films on all faces of peds; fragments; noneffervescent; moderately alkaline, pH 8.0; clear wavy boundary. Lab sample # 14N03396
    2Btk1—79 to 140 centimeters (31.1 to 55.1 inches); brown (10YR 4/3), brown (10YR 4/3), dry; clay loam; 39 percent sand; 33 percent silt; 28 percent clay; moderate coarse subangular blocky structure; very hard, firm, very sticky, very plastic; many very fine tubular and common fine tubular pores; distinct brown (10YR 4/3) clay films on all faces of peds; 8 percent medium prominent irregular noncoherent cemented light gray (10YR 7/2) carbonate masses in matrix; 1 percent by volume subrounded 2-37-75 millimeter mixed fragments; very slight effervescence; moderately alkaline, pH 8.2; gradual wavy boundary. Lab sample # 14N03397
    2Btk2—140 to 185 centimeters (55.1 to 72.8 inches); brown (10YR 4/3), brown (10YR 5/3), dry; clay loam; 24 percent sand; 43 percent silt; 33 percent clay; moderate coarse subangular blocky structure; firm, very sticky, very plastic; distinct clay films on all faces of peds; 3 percent medium prominent irregular noncoherent cemented light gray (10YR 7/2) carbonate masses in matrix; 1 percent by volume subrounded 2-37-75 millimeter mixed fragments; strong effervescence; moderately alkaline, pH 8.2; clear wavy boundary. Lab sample # 14N03398
    2Btk3—185 to 200 centimeters (72.8 to 78.7 inches); dark yellowish brown (10YR 4/4), light yellowish brown (10YR 6/4), dry; loam; 26 percent sand; 49 percent silt; 25 percent clay; weak medium subangular blocky structure; friable, very sticky, very plastic; distinct clay films on all faces of peds; 3 percent medium prominent irregular noncoherent cemented light gray (10YR 7/2) carbonate masses in matrix; fragments; slight effervescence; moderately alkaline, pH 8.2; clear wavy boundary. Lab sample # 14N03399