IDENTIFIERS

Current Taxon Name (Soil Name): Levac

OSD

Series Extent

User Site ID: S12TX2451003

User Pedon ID: S12TX2451003

Lab Information:

Certified Lab Pedon Description - yes

Lab Source ID - KSSL

Lab Pedon # - 12N7640

NCSS Pedon Lab Data NASIS Record ID - 73259

Print Date: 11/23/2024

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: 29.8302111

Std. Longitude: -94.1578111

Datum: WGS84

Country: US—United States

State: Texas

County: TX245—Jefferson

MLRA: 150A—Gulf Coast Prairies

Non-MLRA Soil Survey Area: TX623—Jefferson and Orange Counties, Texas

7.5 Minute USGS Quad: 29094-G2—Alligator Hole Marsh, Texas

PEDON

Describers Name: Jon Wiedenfeld

Current Taxonomic Class: Fine-silty, siliceous, active, hyperthermic Oxyaquic Hapludalfs

Current Taxon Kind: taxadjunct

Pedon Type: OSD pedon

Pedon Purpose: full pedon description

Correlated Information:

Soil Name - Levac

PSC - 28 to 78 cm.

Classificaton Date - 4/3/2012

Soil Taxonomic Edition - eleventh edition

Moisture Class - udic

Moisture Subclass - oxyaquic

Sampled As Information:

Soil Name - Levac

Classificaton Date - 9/29/2011

Dynamic Soil Properties:

Erosion Class - 1

Pedoderm Loose Cover Indicator - no

Hydric: no

Certification Status: certified

QC Status: level 1

SITE

Landscape: flat coastal plain, relict meander belt

Landform: flat

Geomorphic Component Flats: talf

Slope Complexity: simple

Slope Shape Across: linear

Slope Shape Down: linear

Runoff: low

Drainage Class: somewhat poorly

Flooding: rare flooding for brief periods begining in jan

Ponding: none ponding

Geology: Holocene Stage formation.

Surface Fragments:

Benchmark Soil?: no

VEGETATION

SITE OBSERVATION

Observation Date: 9/29/2011 (actual site observation date)

Surface Water Kind: flooded

Surface Water Depth: 15

Surface Cover Properties:

Site Obs. Cover Kind 1 - grass/herbaceous cover

Site Obs. Cover Kind 2 - other grass/herbaceous cover

Pedoderm Loose Cover Indicator - no

Drained? - no

Bedded Soil? - no

Forest Plantation? - no

Site Erosion Accelerated: water erosion sheet

Pedon Horizon Lab Results - 1
Horizon	Top Depth	Bottom Depth	Sample ID	Data Collector	Total Clay	CaCO3 Clay	Total Silt	Fine Silt	Co. Silt	Total Sand	Total Sand Method	VC Sand	Co. Sand	Med. Sand	Fine Sand	VF Sand	VF Sand Method	Texture Class - Field Lab	Rubbed Fiber	Unrubbed Fiber	pH H2O
	cm	cm			%	%	%	%	%	%		%	%	%	%	%			%	%
Ap Bt1 Bt2 Bt3 Btg1 Btg2 Btg3	0 28 58 74 113 154 188	28 58 74 113 154 188 203	— — — — — — —	— — — — — — —	16.4 33.1 28 27.9 34.9 30.8 25.4	— — — — — — —	49.5 45.4 36.6 43.7 41.1 38.5 30.9	21.7 27.2 16.2 21.1 21.6 16.7 11.7	27.8 18.2 20.4 22.6 19.5 21.8 19.2	34.1 21.5 35.4 28.4 24 30.7 43.7	— — — — — — —	0 0 0.1 0 0 0 0	0.1 0.1 0.1 0 0 0 0	0.1 0 0.2 0.2 0 0.1 0	6.7 4.2 9.3 11 4.7 5.8 15.4	27.2 17.2 25.7 17.2 19.3 24.8 28.3	— — — — — — —	l cl cl cl cl cl l	— — — — — — —	— — — — — — —	5.8 5.1 4.7 4.8 5.6 6.5 6.8

Pedon Horizon Lab Results - 2
Horizon	Top Depth	Bottom Depth	Sample ID	pH CaCl2	pH NaF	pH Ox	Delta pH	LL	PL	PI	Atter. Samp. Cond.	COLE	Pot. Acidity	Ca + Mg - Meh 2	K	Ca + Mg - Sat. Paste	KCl Extract. Acidity	Base Sat. - Meh 2	CEC-7	CEC-8.2
	cm	cm						%	%	%		cm/cm	meq/100g	cmol(+)/kg	cmol(+)/kg	mmol(+)/l	cmol(+)/kg	%	cmol(+)/kg	cmol(+)/kg
Ap Bt1 Bt2 Bt3 Btg1 Btg2 Btg3	0 28 58 74 113 154 188	28 58 74 113 154 188 203	— — — — — — —	5 4.5 4.3 4.4 5.4 6 6.2	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —		— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —

Pedon Horizon Lab Results - 3
Horizon	Top Depth	Bottom Depth	Sample ID	ECEC	Phosphate P	NO3-N	EC	EC Method	EC 1:5 by volume	CaCO3 Equiv.	Equiv. Gypsum	Na	SAR	Gypsum Req.	Humic Color	Fulvic Color	Humic + Fulvic Color	Al	PI	Pyro. Hue	PyrO. Value	Pyro. Chroma
	cm	cm		cmol(+)/kg	mg/kg	mg/kg	dS/m		dS/m	%	%	mmol(+)/l	%	L-pcu/g	L-pcu/g	L-pcu/g	%
Ap Bt1 Bt2 Bt3 Btg1 Btg2 Btg3	0 28 58 74 113 154 188	28 58 74 113 154 188 203	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —	0.8 1.3 1.4 1.2 0.9 0.4 0.5	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —	4 9 8 8 10 9 10	1.1 6.7 7.6 5.1 5 0.5 1.5	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —	— — — — — — —

Pedon Diagnostic Features
Feature Kind	Feature Depth L-H	Feature Thickness L-RV-H
	cm
ochric epipedon argillic horizon endosaturation	0—28 28—203 154—203	—28— —175— —49—

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
—	—	—	1.5	—	88	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Ap—0 to 28 centimeters (0.0 to 11.0 inches); very dark grayish brown (10YR 3/2), dark grayish brown (10YR 4/2), dry; loam; moderate medium subangular blocky structure; hard, friable; 14.0 very fine roots throughout and 3.0 fine roots throughout; 4.0 very fine tubular and 3.0 fine tubular pores; 1 percent fine distinct dark yellowish brown (10YR 4/6) masses of oxidized iron with sharp boundaries lining pores; fragments; noneffervescent, by hcl, 1n; clear smooth boundary.; dry when described; observed in pit, small

Bt1—28 to 58 centimeters (11.0 to 22.8 inches); very dark gray (2.5Y 3/1) clay loam; moderate coarse prismatic parts to moderate medium subangular blocky structure; hard, friable; 4.0 very fine roots throughout and 7.0 fine roots throughout; 2.0 very fine tubular and 6.0 very fine tubular pores; 12 percent distinct black (10YR 2/1) clay films on all faces of peds; 2 percent fine prominent masses of oxidized iron with sharp boundaries lining pores; fragments; noneffervescent, by hcl, 1n; gradual wavy boundary.; slightly dry when described; observed in pit, small

Bt2—58 to 74 centimeters (22.8 to 29.1 inches); very dark gray (10YR 3/1) clay loam; moderate medium prismatic parts to moderate medium subangular blocky structure; firm; 2.0 very fine roots throughout and 4.0 fine roots throughout; 2.0 very fine tubular and 4.0 fine tubular pores; 15 percent distinct black (10YR 2/1) clay films on all faces of peds; 2 percent fine prominent brownish yellow (10YR 6/8) masses of oxidized iron with sharp boundaries lining pores and 2 percent fine faint dark gray (2.5Y 4/1) iron depletions with sharp boundaries lining pores; fragments; noneffervescent, by hcl, 1n; gradual wavy boundary.; moderately moist when described; observed in pit, small

Bt3—74 to 113 centimeters (29.1 to 44.5 inches); dark gray (10YR 4/1) clay loam; moderate coarse prismatic parts to moderate medium subangular blocky structure; firm; 4.0 very fine roots throughout and 2.0 fine roots throughout; 2.0 very fine tubular and 2.0 fine tubular pores; 7 percent distinct dark gray (2.5Y 4/1) clay films on all faces of peds; 2 percent fine distinct black (10YR 2/1) iron-manganese masses with sharp boundaries in matrix and 6 percent fine faint gray (2.5Y 5/1) iron depletions with sharp boundaries in matrix surrounding redox concentrations and 10 percent fine prominent olive yellow (2.5Y 6/6) masses of oxidized iron with sharp boundaries lining pores; fragments; noneffervescent, by hcl, 1n; gradual wavy boundary.; moist when described; observed in pit, small

Btg1—113 to 154 centimeters (44.5 to 60.6 inches); gray (10YR 5/1) clay loam; moderate coarse prismatic parts to moderate medium subangular blocky structure; firm; 3.0 very fine roots throughout and 2.0 fine roots throughout; 4.0 very fine tubular and 2.0 fine tubular pores; 10 percent faint dark gray (10YR 4/1) clay films on vertical faces of peds; 2 percent fine prominent strong brown (7.5YR 4/6) masses of oxidized iron with sharp boundaries lining pores and 6 percent fine faint dark gray (2.5Y 4/1) iron depletions with diffuse boundaries in matrix surrounding redox concentrations and 25 percent medium prominent olive yellow (2.5Y 6/6) masses of oxidized iron with sharp boundaries in matrix; fragments; noneffervescent, by hcl, 1n; gradual wavy boundary.; moist when described; observed in pit, small

Btg2—154 to 188 centimeters (60.6 to 74.0 inches); dark gray (2.5Y 4/1) clay loam; moderate coarse prismatic parts to weak medium subangular blocky structure; friable; 2.0 very fine roots throughout; 2.0 very fine tubular and 4.0 fine tubular pores; 6 percent faint dark gray (2.5Y 4/1) clay films on vertical faces of peds; 5 percent fine distinct gray (N 6/) iron depletions with sharp boundaries lining pores and 12 percent medium distinct greenish gray (10GY 6/1) iron depletions with clear boundaries lining pores and 25 percent medium prominent olive yellow (2.5Y 6/8) masses of oxidized iron with sharp boundaries in matrix; fragments; noneffervescent, by hcl, 1n; gradual wavy boundary.; very moist when described; observed in pit, small

Btg3—188 to 203 centimeters (74.0 to 79.9 inches); loam; weak fine subangular blocky structure; friable; 2.0 fine roots throughout; 2.0 very fine tubular and 1.0 fine tubular pores; 1 percent faint dark gray (2.5Y 4/1) clay films on vertical faces of peds; 3 percent fine distinct dark gray (2.5Y 4/1) iron depletions with sharp boundaries in matrix and 5 percent medium prominent very dark brown (10YR 2/2) iron-manganese masses with sharp boundaries in matrix and 10 percent medium distinct greenish gray (10GY 6/1) iron depletions with clear boundaries lining pores and 20 percent medium prominent olive yellow (2.5Y 6/6) masses of oxidized iron with sharp boundaries in matrix; fragments; noneffervescent, by hcl, 1n.; wet, satiated when described; observed in pit, small