SW1231102_Soils/Geotechnical Report_20240327

USDA United States A product of the National Custom Soil Resource
Departm eat of Cooperative Soil Survey,
Agriculture a joint effort of the United Report for
NStates Departm eit of
RCS Agriculture and other Henderson County
Federal agencies, State
Natural agencies including the North Carolina
Resources Agricultural Experim apt
Conservation Stations, and local
Service participants Nesbitt Farm s
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May 31, 2018

Preface
Soil surveys contain inform ation that affects land use planning in survey areas.
They highlight soil lim rations that affect various land uses and provide inform ation
about the properties of the soils in the survey areas. Soil surveys are designed for
m any different users, including farmers, ranchers, foresters, agronomists, urban
planners, com m unity officials, engineers, developers, builders, and horn a buyers.
Also, conservationists, teachers, students, and specialists in recreation, waste
disposal, and pollution control can use the surveys to help them understand,
protect, or enhance the environm ent.
Various land use regulations of Federal, State, and local governm acts m ay inn pose
special restrictions on land use or land treatm ent. Soil surveys identify soil
properties that are used in m acing various land use or land treatm ant decisions.
The information is intended to help the land users identify and reduce the effects of
soil lim rations on various land uses. The landowner or user is responsible for
identifying and corn plying with existing laws and regulations.
Although soil survey information can be used for general farm,local, and wider area
planning, onsite investigation is needed to supplem ant this inform ation in som e
cases. Examples include soil quality assessm ents (http://www.nrcs.usda.gov/wps/
portal/nres/man/soils/health/) and certain conservation and engineering
applications. For m cre detailed information, contact your local USDA Service Center
(https://offices.sc.egov.usda.gov/locator/app?agency=nrcs)or your NRCS State Soil
Scientist(http://www.nres.usda.gov/wps/portal/nres/detail/soils/contactus/?
cid=nrcs142p2_053951).
G eat differences in soil properties can occur within short distances. Som esoils are
seasonally wet or subject to flooding. Som eare too unstable to be used as a
foundation for buildings or roads. Clayey or wet soils are poorly suited to use as
septic tank absorption fields. A high water table m aces a soil poorly suited to
basem ants or underground installations.
The National Cooperative Soil Survey is a joint effort of the United States
Departm ant of Agriculture and other Federal agencies, State agencies including the
Agricultural Experim ant Stations, and local agencies. The Natural Resources
Conservation Service (NRCS) has leadership for the Federal part of the National
Cooperative Soil Survey.
Information about soils is updated periodically. Updated inform ation is available
through the NRCS Web Soil Survey, the site for official soil survey inform ation.
The U.S. Departm ant of Agriculture (USDA) prohibits discrim nation in all its
program sand activities on the basis of race, color, national origin, age, disability,
and where applicable, sex, m arital status, fam iial status, parental status, religion,
sexual orientation, genetic inform ation, political beliefs, reprisal, or because all or a
part of an individual's income is derived from any public assistance program.(Not
all prohibited bases apply to all programs) Persons with disabilities who require
2

alternative means for corn m unication of program information (Braille, large print,
audiotape, etc.) should contact USDA's TARG ET Center at [phone] (voice
and TDD). To file a corn plaint of discrim nation, write to USDA, Director, 0 fice of
Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or
call [phone] (voice)or(202) 720-6382 (TDD). USDA is an equal opportunity
provider and em tloyer.
3

Contents
Preface 2
Soil Map 5
Soil M ap 6
Legend 7
M ap Unit Legend 8
M ap Unit Descriptions 8
Henderson County, North Carolina 10
BaB—Bradson gravelly loam,2 to 7 percent slopes 10
DeA—Delanco (dillard) loam,0 to 2 percent slopes 11
FaC—Fannin silt loam,7 to 15 percent slopes 12
FaE—Fannin silt loam,15 to 25 percent slopes 13
TaF—Talladega silt loam,25 to 45 percent slopes (brownwood) 14
To—Toxaway silt loam. 15
References 17
4

Soil Map
The soil map section includes the soil map for the defined area of interest, a list of
soil map units on the map and extent of each map unit, and cartographic sym Lois
displayed on the map. Also presented are various m etadata about data used to
produce the map, and a description of each soil map unit.
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Custom Soil Resource Report
Soil M ap ki
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M Map Scale:1:6,320 if printed on A landscape(11"x 8.5")sheet. P,
Meters
N 0 5 0 1 00 2 00 3 00
A Feet0 3 00 6 00 1 200 1 800
Map projection:W d Mercator Comer coordinates:W CS84 Edge tics:UTM Zone 17N W C3584
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Custom Soil Resource Report
A MAP LEG END M P INFO RMATION
Area of Interest(AO, • Spoil Area The soil surveys that corn prise your AO(were mapped at
Area of Interest(AO 4 1:20,000.
Q Stony Spot
Soils Very Stony Spot
0 Soil M Unit Polygons ® Warning:Soil M ap m ay not be valid at this scale.
Wet Spot
,.vii Soil M 47 Unit Lines Enlargem Ent of maps beyond the scale of mapping can cause
• 0 her msunderstandin of the detail of m in and accuracyof soil
• Soil M Unit Points9 app 9
.� Special Line Features line placem Ent.The maps do not show the sm all areas of
Special Point Features contrasting soils that could have been shown at a m cre detailed
V Blowout Water Features scale.
_-- Stream sand Canals
a Borrow Pit
Transportation Please rely on the bar scale on each m 4:1 sheet for m a{)
XIE Clay Spot 444 Rails m Easurem cents.
O Closed Depression A/ Interstate Highways
G ravel Pit Source of Map: Natural Resources Conservation Service
ti US Routes Web Soil Survey URL:
G evelly Spot M for Roads Coordinate System: Web M acator(EPSG 3857)
o Landfill Local Roads Maps from the Web Soil Survey are based on the Web M ecator
Lava Flow Background projection,which preserves direction and shape but distorts
distance and area.A projection that preserves area,such as the
adi M ash or swamp Aerial Photography Albers equal-area conic projection,should be used if m cre
eR M he or O carry accurate calculations of distance or area are required.
O M bcellaneous Water This product is generated from the USDA-NRCS certified data as
O Perennial Water of the version date(s)listed below.
V Rock 0 ucrop Soil Survey Area: Henderson County, North Carolina
+ Saline Spot Survey Area Data: Version 17,Sep 26,2017
. . Sandy Spot Soil map units are labeled(as space allows)for m op scales
Severely Eroded Spot 1:50,000 or larger.
* Sinkhole Date(s)aerial im ages were photographed: May 21,2015—Nov
10 Slide or Slip 28,2017
Sodic Spot The orthophoto or other base m on which the soil lines were
corn pled and digitized probably differs from the background
imagery displayed on these m aps.As a result,som em hor
shifting of map unit boundaries m ay be evident.
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Custom Soil Resource Report
M ap Unit Legend
M ap Unit Symbol M p Unit Name Pores in AO I lercent of AO I
BaB Bradson gravelly loam,2 to 7 0.1 0 .1%
percent slopes
DeA Delanco(dillard)loam,0 to 2 4.0 4 .6%
percent slopes
FaC Fannin silt loam,7 to 15 percent 57.8 6 6.1%
slopes
FaE Fannin silt loam,15 to 25 15.0 1 7.1%
percent slopes
TaF Talladega silt loam,25 to 45 9.0 1 0.3%
percent slopes(brownwood)
To Toxaway silt loam 1 .5 1 .8%
Totals for Area of Interest 8 7.4 1 00.0%
M ap Unit Descriptions
The m T units delineated on the detailed soil maps in a soil survey represent the
soils or m scellaneous areas in the survey area. The map unit descriptions, along
with the m Ts, can be used to determ he the corn position and properties of a unit.
A m T unit delineation on a soil map represents an area dom hated by one or m a-e
m ajor kinds of soil or m scellaneous areas. A map unit is identified and nam ed
according to the taxonom b classification of the dom hant soils. Within a taxonom b
class there are precisely defined lim is for the properties of the soils. 0 nthe
landscape, however, the soils are natural phenom ena, and they have the
characteristic variability of all natural phenom ena. Thus, the range of som e
observed properties may extend beyond the lim is defined for a taxonom b class.
Areas of soils of a single taxonom b class rarely, if ever, can be mapped without
including areas of other taxonom b classes. Consequently, every m ap unit is made
up of the soils or m scellaneous areas for which it is nam ed and som em hor
corn ponents that belong to taxonom b classes other than those of the m for soils.
M cst m hor soils have properties sim lar to those of the dom hant soil or soils in the
m ap unit, and thus they do not affect use and m anagem ait. These are called
noncontrasting, or sim lar, corn ponents. They m ay or m ay not be m aitioned in a
particular map unit description. 0 her m hor corn ponents, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
m anagem ent. These are called contrasting, or dissim lar, components. They
generally are in sm all areas and could not be mapped separately because of the
scale used. Som esm all areas of strongly contrasting soils or m scellaneous areas
are identified by a special sym bol on the maps. If included in the database for a
given area, the contrasting m hor corn ponents are identified in the m ap unit
descriptions along with som a characteristics of each. A few areas of m hor
corn ponents m ay not have been observed, and consequently they are not
m aitioned in the descriptions, especially where the pattern was so corn Alex that it
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Custom Soil Resource Report
was im practical to make enough observations to identify all the soils and
m scellaneous areas on the landscape.
The presence of m nor corn ponents in a map unit in no way dim hishes the
usefulness or accuracy of the data. The objective of mapping is not to delineate
pure taxonom b classes but rather to separate the landscape into landform sor
landform segm ants that have sim iar use and m aiagem sit requirem acts. The
delineation of such segm sits on the map provides sufficient inform aion for the
developm sit of resource plans. If intensive use of sm all areas is planned, however,
onsite investigation is needed to define and locate the soils and m scellaneous
areas.
An identifying sym bpi precedes the map unit nam e in the map unit descriptions.
Each description includes general facts about the unit and gives im portant soil
properties and qualities.
Soils that have profiles that are alm cst alike make up a soil series. Except for
differences in texture of the surface layer, all the soils of a series have major
horizons that are sim iar in corn position, thickness, and arrangem sit.
Soils of one series can differ in texture of the surface layer, slope, stoniness,
salinity, degree of erosion, and other characteristics that affect their use. 0 nthe
basis of such differences, a soil series is divided into soil phases. M cst of the areas
shown on the detailed soil maps are phases of soil series. The nam eof a soil phase
corn m only indicates a feature that affects use or m aiagem sit. For example, Alpha
silt loam,0 to 2 percent slopes, is a phase of the Alpha series.
Som e m ap units are m ale up of two or m cre m ajor soils or m scellaneous areas.
These map units are corn ilexes, associations, or undifferentiated groups.
A complex consists of two or m are soils or m scellaneous areas in such an intricate
pattern or in such sm all areas that they cannot be shown separately on the maps.
The pattern and proportion of the soils or m scellaneous areas are som eNhat sim iar
in all areas. Alpha-Beta corn ilex, 0 to 6 percent slopes, is an exam ile.
An association is m ale up of two or m cre geographically associated soils or
m scellaneous areas that are shown as one unit on the maps. Because of present
or anticipated uses of the map units in the survey area, it was not considered
practical or necessary to map the soils or m scellaneous areas separately. The
pattern and relative proportion of the soils or m scellaneous areas are som eNhat
sim iar. Alpha-Beta association, 0 to 2 percent slopes, is an exam ile.
An undifferentiated group is m ade up of two or m cre soils or m scellaneous areas
that could be mapped individually but are mapped as one unit because sim iar
interpretations can be m ale for use and m aiagem Ent. The pattern and proportion
of the soils or m scellaneous areas in a mapped area are not uniform.An area can
be made up of only one of the major soils or m scellaneous areas, or it can be m ale
up of all of them.Alpha and Beta soils, 0 to 2 percent slopes, is an exam ile.
Som esurveys include mscellaneous areas. Such areas have little or no soil
m aerial and support little or no vegetation. Rock outcrop is an example.
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Custom Soil Resource Report
Henderson County, North Carolina
BaB—Bradson gravelly loam,2 to 7 percent slopes
M ap Unit Setting
National m ep unit sym Lol: Ic10
Elevation: 900 to 3,500 feet
Mean annual precipitation: 40 to 80 inches
Mean annual air tem perature: 50 to 57 degrees F
Frost-free period: 150 to 180 days
Farm bnd classification: All areas are prim efarm land
M ap Unit Corn position
Bradson and sim lar soils: 90 percent
Estim des are based on observations, descriptions, and transects of the m punit.
Description of Bradson
Setting
Landform: Fans, stream terraces
Landform position (two-dim ensional): Sum mi
Landform position (three-dim ensional): Tread
Down-slope shape: Convex
Across-slope shape: Convex
Parent m aerial: 011 alluvium and/or old colluvium derived from igneous and
m dam a-phic rock
Typical profile
Ap-0 to 6 inches: gravelly loam
Bt- 6 to 65 inches: clay loam
C- 65 to 80 inches: loam
Properties and qualities
Slope: 2 to 7 percent
Depth to restrictive feature: M cre than 80 inches
Natural drainage class: Well drained
Runoff class: M edium
Capacity of the m cst lim ting layer to transm t water(Ksat): M cderately high to
high (0.57 to 1.98 in/hr)
Depth to water table: M a-e than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water storage in profile: M cderate (about 8.6 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2s
Hydrologic Soil G pup: B
Hydric soil rating: No
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Custom Soil Resource Report
DeA—Delanco (dillard) loam,0 to 2 percent slopes
M ap Unit Setting
National m unit sym bxl: Ic1 b
Elevation: 1,500 to 3,000 feet
Mean annual precipitation: 55 to 75 inches
Mean annual air tem prrature: 50 to 57 degrees F
Frost-free period: 150 to 185 days
Farm bnd classification: All areas are prim efarm land
M ap Unit Corn position
Dillard and sim lar soils: 95 percent
Mhor com pnnents: 5 percent
Estim des are based on observations, descriptions, and transects of the m anunit.
Description of Dillard
Setting
Landform: Depressions on stream terraces
Landform position (two-dim ensional): Sum mi
Landform position (three-dim ensional): Tread
Down-slope shape: Linear
Across-slope shape: Concave
Parent material: Alluvium and/or colluvium derived from igneous and m etamorphic
rock
Typical profile
Ap- 0 to 10 inches: loam
Bt- 10 to 30 inches: clay loam
BCg-30 to 40 inches: sandy loam
Cg-40 to 80 inches: sandy loam
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: M cre than 80 inches
Natural drainage class: M alerately well drained
Runoff class: Low
Capacity of the m cst lim ting layer to transm t water(Ksat): M cderately high to
high (0.57 to 1.98 in/hr)
Depth to water table: About 30 to 42 inches
Frequency of flooding: 0 ccasional
Frequency of ponding: None
Available water storage in profile: M oderate (about 8.2 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2w
Hydrologic Soil G pup: C
Hydric soil rating: No
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Custom Soil Resource Report
M nor Corn ponents
Kinkora
Percent of m unit: 5 percent
Landform: Depressions on stream terraces
Down-slope shape: Concave
Across-slope shape: Linear
Hydric soil rating: Yes
FaC—Fannin silt loam, 7 to 15 percent slopes
M ap Unit Setting
National m gn unit sym Lol: loin
Elevation: 1,400 to 4,000 feet
Mean annual precipitation: 50 to 60 inches
Mean annual air tem perature: 46 to 57 degrees F
Frost-free period: 140 to 200 days
Farm bnd classification: Farm land of statewide im portance
M ap Unit Com position
Fannin and sim tar soils: 85 percent
Estim des are based on observations, descriptions, and transects of the m Tunit.
Description of Fannin
Setting
Landform: Ridges, mountain slopes
Landform position (two-dim ensional): Sum mi
Landform position (three-dim ensional): M cuntaintop, crest
Down-slope shape: Convex
Across-slope shape: Convex
Parent material: Creep deposits over residuum weathered from m ba schist and/or
gneiss and/or m baeous m dam crphic rock
Typical profile
A -0 to 6 inches: silt loam
B- 6 to 36 inches: clay loam
C-36 to 60 inches: loam
Properties and qualities
Slope: 7 to 15 percent
Depth to restrictive feature: M cre than 80 inches
Natural drainage class: Well drained
Runoff class: M edium
Capacity of the m ast lim ting layer to transm t water(Ksat): M cderately high to
high (0.57 to 1.98 in/hr)
Depth to water table: M a-e than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water storage in profile: M cderate (about 7.5 inches)
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Custom Soil Resource Report
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3e
Hydrologic Soil G pup: B
Hydric soil rating: No
FaE—Fannin silt loam, 15 to 25 percent slopes
M ap Unit Setting
National m gn unit sym Lol: Ic1 p
Elevation: 1,400 to 4,000 feet
Mean annual precipitation: 50 to 60 inches
Mean annual air tem prrature: 46 to 57 degrees F
Frost-free period: 140 to 200 days
Farm bnd classification: Farm land of local im portance
M ap Unit Com position
Fannin and sim tar soils: 80 percent
Estim des are based on observations, descriptions, and transects of the m punit.
Description of Fannin
Setting
Landform: Ridges, mountain slopes
Landform position (two-dim ensional): Sum mi, backslope
Landform position (three-dim ensional): Upper third of m cuntainflank, side slope
Down-slope shape: Convex
Across-slope shape: Linear
Parent material: Creep deposits over residuum weathered from m ba schist and/or
gneiss and/or m baeous m etam crphic rock
Typical profile
A -0 to 6 inches: silt loam
B- 6 to 36 inches: clay loam
C-36 to 60 inches: loam
Properties and qualities
Slope: 15 to 25 percent
Depth to restrictive feature: M cre than 80 inches
Natural drainage class: Well drained
Runoff class: High
Capacity of the m ast lim ting layer to transm t water(Ksat): M cderately high to
high (0.57 to 1.98 in/hr)
Depth to water table: M cre than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water storage in profile: M cderate (about 7.5 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4e
Hydrologic Soil G pup: B
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Custom Soil Resource Report
Hydric soil rating: No
TaF—Talladega silt loam,25 to 45 percent slopes (brow rw cod)
M ap Unit Setting
National m ep unit sym bxl: Ic23
Elevation: 1,700 to 4,200 feet
Mean annual precipitation: 45 to 70 inches
Mean annual air tem prrature: 46 to 57 degrees F
Frost-free period: 124 to 176 days
Farm bnd classification: Not prim efarm land
M ap Unit Com position
Brown wood, stony, and sim lar soils: 90 percent
Estim des are based on observations, descriptions, and transects of the m punit.
Description of Brow rw cod, Stony
Setting
Landform: Ridges, mountain slopes
Landform position (two-dim ensional): Backslope
Landform position (three-dim ensional): Upper third of m cuntainflank, side slope
Down-slope shape: Convex
Across-slope shape: Linear
Parent material: Affected by soil creep in the upper solum over residuum
weathered from m ba schist and/or gneiss and/or other m caceous
m dam crphic rock
Typical profile
A -0 to 5 inches: fine sandy loam
Bw-5 to 23 inches: loam
Cr-23 to 80 inches: weathered bedrock
Properties and qualities
Slope: 30 to 50 percent
Percent of area covered with surface fragm ants: 0.1 percent
Depth to restrictive feature: 20 to 40 inches to paralithic bedrock
Natural drainage class: Som eNhat excessively drained
Runoff class: High
Capacity of the m cst lim ting layer to transm t water(Ksat): Very low to high (0.00
to 1.98 in/hr)
Depth to water table: M a-e than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Available water storage in profile: Very low(about 2.8 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 6s
Hydrologic Soil G pup: B
Hydric soil rating: No
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Custom Soil Resource Report
To—Toxaw aj silt loam
M ap Unit Setting
National m qn unit sym Lol: Ic26
Elevation: 1,850 to 2,050 feet
Mean annual precipitation: 45 to 70 inches
Mean annual air tem prrature: 46 to 57 degrees F
Frost-free period: 116 to 170 days
Farm and classification: Prim efarm land if drained and either protected from flooding
or not frequently flooded during the growing season
M ap Unit Com position
Toxaway, frequently flooded, and sim tar soils: 95 percent
Mnor com ponents: 5 percent
Estim des are based on observations, descriptions, and transects of the m Tunit.
Description of Toxaw ay, Frequently Flooded
Setting
Landform: Depressions on flood plains
Down-slope shape: Concave, linear
Across-slope shape: Concave
Parent m aerial: Loam yalluvium
Typical profile
A -0 to 26 inches: loam
Cg- 26 to 80 inches: stratified sandy clay loam to sand
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: M cre than 80 inches
Natural drainage class: Very poorly drained
Runoff class: Very high
Capacity of the m ast lim ting layer to transm t water(Ksat): M cderately high to
high (0.57 to 1.98 in/hr)
Depth to water table: About 0 to 12 inches
Frequency of flooding: Frequent
Frequency of ponding: None
Available water storage in profile: M cderate (about 8.1 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4w
Hydrologic Soil G pup: B/D
Hydric soil rating: Yes
M nor Corn ponents
Toxaw ay, undrained
Percent of man unit: 5 percent
Landform: Depressions on flood plains
Down-slope shape: Linear, concave
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Custom Soil Resource Report
Across-slope shape: Concave
Hydric soil rating: Yes
16

References
Am erican Association of State Highway and Transportation 0 ficials (AASHTO)
2004. Standard specifications for transportation materials and methods of sam ding
and testing. 24th edition.
Am erican Society for Testing and Materials (ASTM). 2005. Standard classification of
soils for engineering purposes. ASTM Standard D2487-00.
Cowardin, L.M, V. Carter, F.C. G det, and E.T. LaRoe. 1979. Classification of
wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife
Service FWS/O BS-79/31.
Federal Register. July 13, 1994. Changes in hydric soils of the United States.
Federal Register. Septem ter 18, 2002. Hydric soils of the United States.
Hurt, G W., and L.M.Vasilas, editors. Version 6.0, 2006. Field indicators of hydric
soils in the United States.
National Research Council. 1995. Wetlands: Characteristics and boundaries.
Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service.
U.S. Departm ent of Agriculture Handbook 18. http://www.nrcs.usda.gov/wps/portal/
nres/detail/national/soils/?cid=nres 142p2_054262
Soil Survey Staff. 1999. Soil taxonom y. A basic system of soil classification for
m acing and interpreting soil surveys. 2nd edition. Natural Resources Conservation
Service, U.S. Department of Agriculture Handbook 436. http://
www.nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053577
Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of
Agriculture, Natural Resources Conservation Service. http://
www.nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053580
Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and
Delaware Departm ent of Natural Resources and Environm eital Control, Wetlands
Section.
United States Arm yCorps of Engineers, Environm eital Laboratory. 1987. Corps of
Engineers wetlands delineation m anual. Waterways Experim eit Station Technical
Report Y-87-1.
United States Departm eit of Agriculture, Natural Resources Conservation Service.
National forestry m anual. http://www.nres.usda.gov/wps/portal/nres/detail/soils/
horn e'?cid=nres142p2_053374
United States Departm ent of Agriculture, Natural Resources Conservation Service.
National range and pasture handbook. http://www.nres.usda.gov/wps/portal/nres/
detail/national/landuse/rangepasture/?cid=stelprdb1043084
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Custom Soil Resource Report
United States Departm ent of Agriculture, Natural Resources Conservation Service.
National soil survey handbook, title 430-VI. http://www.nres.usda.gov/wps/portal/
nres/detail/soils/scientists/?cid=nres142p2_054242
United States Departm ent of Agriculture, Natural Resources Conservation Service.
2006. Land resource regions and m ejor land resource areas of the United States,
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