LOCATION WINDFETCH               CA

Established Series
Rev.RLR/GML/RLR
03/2017

WINDFETCH SERIES

The Windfetch series consists of well drained soils that formed in a thin, discontinuous layer of human transport materials overlying uplifted alluvium from marine and other mixed rock sources. Windfetch soils are on uplifted alluvium and terraces. Slopes range from 0 to 12 percent. The mean annual precipitation is about 368 mm and the mean annual air temperature is about 18 degrees C.

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, thermic Calcic Argixerolls

TYPICAL PEDON: Windfetch loam, on uplifted coastal plain deposits of a city park lawn. When described the soil was dry throughout. (Colors are for dry soil unless otherwise noted.)

^A--0 to 10 cm; dark brown (7.5YR 3/2) loam, very dark gray (7.5YR 3/1) moist; moderate fine granular structure; very friable, moderately hard, moderately sticky and slightly plastic; common fine and very fine roots; common medium and very fine tubular pores; moderately acid (pH 5.8); clear wavy boundary.

^Au--10 to 30 cm; dark brown (7.5YR 3/2) clay loam, very dark gray (7.5YR 3/1) moist; moderate medium prismatic structure; friable, hard, moderately sticky and moderately plastic; common fine roots; common medium and very fine tubular pores; many clay films on faces of peds; few artifacts; very slightly effervescent; slightly acid (pH 6.5); clay films and soil structure are remnant from source material; clear wavy boundary. (Combined thickness of ^A horizons is 8 to 40 cm)

2Bt--30 to 67 cm; dark brown (7.5YR 3/3) clay loam, dark brown (7.5YR 3/2) moist; moderate medium prismatic structure parting to moderate coarse subangular blocky structure; friable, moderately hard, moderately sticky and moderately plastic; common medium roots; common medium and very fine tubular pores; many clay films on faces of peds; slightly alkaline (pH 7.4); clear wavy boundary. (30 to 65 cm thick)

2Btk1--67 to 94 cm; dark brown (7.5YR 3/4) clay loam, dark brown (7.5YR 3/4) moist; moderate medium subangular blocky structure; friable, very sticky and moderately plastic; common very fine roots; common very fine tubular pores; many clay films on faces of peds; common medium calcium carbonate masses; strongly effervescent; slightly alkaline (pH 7.8); clear wavy boundary.

2Btk2--94 to 120 cm; light brown (7.5YR 6/4) clay loam, brown (7.5YR 5/4) moist; weak medium subangular blocky structure; friable, moderately sticky, moderately plastic; common very fine roots; common very fine tubular pores; many clay films on faces of peds; few fine distinct spherical black (10YR 2/1) manganese masses; finely disseminated calcium carbonates and common medium threadlike white (10YR 8/1) calcium carbonate masses; strongly effervescent; moderately alkaline (pH 7.9); clear wavy boundary.

2Btk3--120 to 160 cm; light yellowish brown (10YR 6/4) clay loam, yellowish brown (10YR 5/4) moist; weak medium subangular blocky structure; friable, moderately sticky and moderately plastic; common very fine roots; common very fine tubular pores; common distinct clay films on faces of peds; few fine, spherical, black (10YR 2/1) manganese masses; finely disseminated calcium carbonates and few fine distinct irregular white (10YR 8/1) calcium carbonate masses; slightly effervescent; slightly alkaline (pH 7.8); gradual wavy boundary. (combined thickness of 2Btk horizons is 35 to 130 cm)

2Bt'--160 to 200 cm; pale brown (10YR 6/3) clay loam, brown (10YR 5/3) moist; weak medium subangular blocky structure; friable, moderately sticky and moderately plastic; common very fine roots; common very fine irregular pores; common distinct clay films on faces of peds; few fine distinct spherical black (10YR 2/1) manganese masses and few fine distinct irregular gray (10YR 5/1) iron depletions with sharp boundaries and common medium distinct cylindrical iron-manganese masses with sharp boundaries surrounding redox depletions; very slightly effervescent; slightly alkaline (pH 7.7).

TYPE LOCATION: Los Angeles County, California; Edward Vincent Jr Park near Warren Lane parallel parking lot between lot and paved walking path in upland area; 33 degrees North latitude, 58 minutes, 23 seconds and 118 degrees, 20 minutes, 40 seconds West longitude, WGS84 - U.S.G.S Quad: Inglewood

RANGE IN CHARACTERISTICS:

Soil moisture: The soil becomes moist below a depth of about 30 cm some time from October to December and remains moist in some part between depths of about 30 to 90 cm until April or May.
Mean annual soil temperature: 17 to 20 degrees C

Rock fragments: 0 to 10 percent
Depth to secondary calcium carbonate: within 40 to 105 cm
Reaction: slightly alkaline or moderately alkaline
Clay content: 24 to 34 percent in the particle size control section
Human transported materials: less than 50 cm thick

^A(u) horizon
Dry color: hue of 10YR or 7.5YR; value of 2 to 5; chroma of 2 or 3.
Moist color: hue of 10YR or 7.5YR; value of 2 or 3; chroma of 1 to 3.
Texture: loam, silt loam, fine sandy loam or clay loam.
Rock fragments: 0 to 5 percent.
Organic matter content: 1 to 3.5 percent; imported surface material may have higher organic matter.
Artifacts: 0 to 5 percent.

^C(u) horizon (where present)
Dry color: hue of 10YR or 7.5YR; value of 2 to 5; chroma of 2 or 3.
Moist color: hue of 10YR or 7.5YR; value of 1 to 3.
Texture: loam, fine sandy loam, silt loam or clay loam.
Rock fragments: 0 to 5 percent.
Artifacts: 0 to 5 percent; individual horizons may have up to 20 percent artifacts.

(2)Bt horizon
Dry color: hue of 10YR or 7.5YR; value of 3 to 5; chroma of 3 or 4
Moist color: hue of 10YR or 7.5YR; value of 3 or 4; chroma of 2 to 4
Texture: loam, silt loam or clay loam.
Clay content: 24 to 34 percent.
Rock fragments: 0 to 5 percent.

(2)Btk horizon
Moist color: hue of 10YR or 7.5YR; value of 3 to 6; chroma of 3 or 4
Texture: clay loam loam.
Clay content: 24 to 34 percent.
Rock fragments: 0 to 5 percent.

COMPETING SERIES: There are no competing series.

GEOGRAPHIC SETTING:
Landscape: coastal plain
Landform: uplifted marine alluvium and terraces with slight to moderate surface modification.
Parent material: alluvium from marine and other mixed rock sources
Slope: 0 to 12 percent.
Elevation: 0 to 150 meters.
Mean annual precipitation: 280 to 420 mm.
January mean temperature: 14 degrees C.
July mean temperature: 21.5 degrees C.
Mean annual temperature: 16 to 19 degrees C.
Frost-free season: 320 to 365 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Botella, Centinela, Cropley, Hueneme, Longshore, Marina, Ramona. San Emigdio and Thums soils.
Botella soils: do not have calcium carbonate and are found on alluvial fans and fan remnants.
Centinela soils: have greater than 35 percent clay and are found on slightly lower positions.
Cropley soils: have greater than 35 percent clay and are found on alluvial fans and flood plains.
Hueneme soils: have less than 18 percent clay and are somewhat poorly drained on floodplains and alluvial fans.
Longshore soils: do not have calcium carbonate and are weathered from fine-grained sandstone on hills.
Marina soils: have a sandy particle size control section with lamellae on dunes.
Ramona soils: do not have calcium carbonate and are formed from alluvium from granitic sources on remnant fans.
San Emigdio soils: have less than 18 percent clay and are found on alluvial fans.
Thums soils: have greater than 35 percent clay and are on similar landforms.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained; moderate saturated hydraulic conductivity; medium to very low runoff.

USE AND VEGETATION: Windfetch soils are in high density urban residential and recreational areas. Vegetation is mostly non-native and ornamental.

DISTRIBUTION AND EXTENT: Southern California Coastal Plain; MLRA 19. These soils are of moderately extent.

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Davis, California.

SERIES ESTABLISHED: Inglewood, Los Angeles County, California, 2015.

REMARKS: Diagnostic horizons and features recognized in this pedon include:

Human transported material - the zone from a depth of 0 to 30 cm.
Mollic epipedon - from a depth of 0 to 30 cm.
Argillic horizon - from a depth of 30 to 200 cm.
Secondary calcium carbonate - the zone from a depth of 67 to 160 cm.
Particle-size control section - from a depth of 30 to 80 cm.

Pedons located in urban areas that have a thin surface layer of human transported materials which is non-limiting are included in this concept.

The lithologic discontinuity separating the anthropogenic material and natural soil is not series criteria.

ADDITIONAL DATA:

NASIS User Pedon ID is S2015CA037003
Lab Pedon ID is #15N0541
Classified using the Twelfth Edition Keys to Soil Taxonomy

---

National Cooperative Soil Survey
U.S.A.