HomeMy WebLinkAboutSUB201300137 Assessment - Environmental LOUISA
ALBEMARLE
NELSON FLWANNA
Thomas Jefferson Soil and Water Conservation District
706 Forest St, Ste G
Charlottesville, VA 22903
975-0224
October 9, 2013
TO: Johnathan Newberry
Planning Department
RE: Soils Report for:
Old Trail — 28, 29B, 35B
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Map Unit Description(Brief,Generated)---Albemarle County,Virginia Old Trail-28,29B,35B
Map Unit Description (Brief, Generated)
The map units delineated on the detailed soil maps in a soil survey represent the
soils or miscellaneous areas in the survey area.The map unit descriptions in this
report, along with the maps, can be used to determine the composition and
properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas.A map unit is identified and named
according to the taxonomic classification of the dominant soils.Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the
landscape, however, the soils are natural phenomena, and they have the
characteristic variability of all natural phenomena. Thus, the range of some
observed properties may extend beyond the limits defined for a taxonomic class.
Areas of soils of a single taxonomic class rarely, if ever, can be mapped without
including areas of other taxonomic classes.Consequently, every map unit is made
up of the soils or miscellaneous areas for which it is named and some minor
components that belong to taxonomic classes other than those of the major soils.
The Map Unit Description (Brief, Generated) report displays a generated
description of the major soils that occur in a map unit. Descriptions of non-soil
(miscellaneous areas)and minor map unit components are not included. This
description is generated from the underlying soil attribute data.
Additional information about the map units described in this report is available in
other Soil Data Mart reports,which give properties of the soils and the limitations,
capabilities, and potentials for many uses.Also,the narratives that accompany the
Soil Data Mart reports define some of the properties included in the map unit
descriptions.
Report—Map Unit Description (Brief, Generated)
Albemarle County, Virginia
Map Unit: 5B—Belvoir loam, 2 to 7 percent slopes
Component: Belvoir(80%)
The Belvoir component makes up 80 percent of the map unit. Slopes are 2 to 7
percent.This component is on swales, piedmonts. The parent material consists of
residuum weathered from granite and gneiss. Depth to a root restrictive layer,
fragipan,is 16 to 30 inches.The natural drainage class is somewhat poorly drained.
Water movement in the most restrictive layer is moderately high.Available water
to a depth of 60 inches is very low. Shrink-swell potential is moderate.This soil is
not flooded. It is not ponded.A seasonal zone of water saturation is at 18 inches
during January, February, March,April. Organic matter content in the surface
horizon is about 1 percent.Nonirrigated land capability classification is 3w.This soil
does not meet hydric criteria.
Map Unit: 25B—Dyke silt loam, 2 to 7 percent slopes
USDA Natural Resources Web Soil Survey 10/9/2013
r Conservation Service National Cooperative Soil Survey Page 1 of 3
4,wr/ yr
Map Unit Description(Brief,Generated)--Albemarle County,Virginia Old Trail-28,29B,35B
Component: Dyke (85%)
The Dyke component makes up 85 percent of the map unit. Slopes are 2 to 7
percent. This component is on fans, mountains. The parent material consists of
residuum weathered from greenstone. Depth to a root restrictive layer is greater
than 60 inches.The natural drainage class is well drained. Water movement in the
most restrictive layer is moderately high.Available water to a depth of 60 inches is
high. Shrink-swell potential is moderate. This soil is not flooded. It is not ponded.
There is no zone of water saturation within a depth of 72 inches. Organic matter
content in the surface horizon is about 1 percent. Nonirrigated land capability
classification is 2e.This soil does not meet hydric criteria.
Map Unit: 26B3—Dyke clay loam, 2 to 7 percent slopes, severely eroded
Component: Dyke (85%)
The Dyke component makes up 85 percent of the map unit. Slopes are 2 to 7
percent. This component is on mountains, fans. The parent material consists of
residuum weathered from greenstone. Depth to a root restrictive layer is greater
than 60 inches.The natural drainage class is well drained.Water movement in the
most restrictive layer is moderately high.Available water to a depth of 60 inches is
high. Shrink-swell potential is moderate. This soil is not flooded. It is not ponded.
There is no zone of water saturation within a depth of 72 inches. Organic matter
content in the surface horizon is about 1 percent. Nonirrigated land capability
classification is 3e. This soil does not meet hydric criteria.
Map Unit: 26C3—Dyke clay loam, 7 to 15 percent slopes, severely eroded
Component: Dyke (85%)
The Dyke component makes up 85 percent of the map unit. Slopes are 7 to 15
percent. This component is on mountains, fans. The parent material consists of
residuum weathered from greenstone. Depth to a root restrictive layer is greater
than 60 inches.The natural drainage class is well drained.Water movement in the
most restrictive layer is moderately high.Available water to a depth of 60 inches is
high. Shrink-swell potential is moderate.This soil is not flooded. It is not ponded.
There is no zone of water saturation within a depth of 72 inches. Organic matter
content in the surface horizon is about 1 percent. Nonirrigated land capability
classification is 4e. This soil does not meet hydric criteria.
Map Unit: 36C—Hayesville loam, 7 to 15 percent slopes
Component: Hayesville(80%)
USDA Natural Resources Web Soil Survey 10/9/2013
dill, Conservation Service National Cooperative Soil Survey Page 2 of 3
Map Unit Description(Brief,Generated)—Albemarle County,Virginia Old Trail-28,29B,35B
The Hayesville component makes up 80 percent of the map unit. Slopes are 7 to
15 percent.This component is on hillslopes, piedmonts. The parent material
consists of residuum weathered from granite and gneiss. Depth to a root restrictive
layer is greater than 60 inches.The natural drainage class is well drained. Water
movement in the most restrictive layer is moderately high.Available water to a depth
of 60 inches is high. Shrink-swell potential is low.This soil is not flooded. It is not
ponded.There is no zone of water saturation within a depth of 72 inches. Organic
matter content in the surface horizon is about 2 percent.Nonirrigated land capability
classification is 4e. This soil does not meet hydric criteria.
Map Unit: 37D3—Hayesville clay loam, 15 to 25 percent slopes, severely eroded
Component: Hayesville (80%)
The Hayesville component makes up 80 percent of the map unit. Slopes are 15 to
25 percent. This component is on hillslopes, piedmonts. The parent material
consists of residuum weathered from granite and gneiss. Depth to a root restrictive
layer is greater than 60 inches.The natural drainage class is well drained. Water
movement in the most restrictive layer is moderately high.Available water to a depth
of 60 inches is high. Shrink-swell potential is low.This soil is not flooded. It is not
ponded.There is no zone of water saturation within a depth of 72 inches. Organic
matter content in the surface horizon is about 2 percent.Nonirrigated land capability
classification is 6e.This soil does not meet hydric criteria.
Data Source Information
Soil Survey Area: Albemarle County,Virginia
Survey Area Data: Version 9, Jan 20, 2010
USDA Natural Resources Web Soil Survey 10/9/2013
r Conservation Service National Cooperative Soil Survey Page 3 of 3
Dwellings and Small Commercial Buildings—Albemarle County,Virginia Old Trail-28,29B,35B
Dwellings and Small Commercial Buildings
Soil properties influence the development of building sites, including the selection
of the site,the design of the structure,construction,performance after construction,
and maintenance.This table shows the degree and kind of soil limitations that affect
dwellings and small commercial buildings.
The ratings in the table are both verbal and numerical. Rating class terms indicate
the extent to which the soils are limited by all of the soil features that affect building
site development. Not limited indicates that the soil has features that are very
favorable for the specified use. Good performance and very low maintenance can
be expected. Somewhat limited indicates that the soil has features that are
moderately favorable for the specified use. The limitations can be overcome or
minimized by special planning, design, or installation. Fair performance and
moderate maintenance can be expected. Very limited indicates that the soil has
one or more features that are unfavorable for the specified use. The limitations
generally cannot be overcome without major soil reclamation, special design, or
expensive installation procedures. Poor performance and high maintenance can
be expected.
Numerical ratings in the table indicate the severity of individual limitations.The
ratings are shown as decimal fractions ranging from 0.01 to 1.00. They indicate
gradations between the point at which a soil feature has the greatest negative
impact on the use (1.00) and the point at which the soil feature is not a limitation
(0.00).
Dwellings are single-family houses of three stories or less. For dwellings without
basements, the foundation is assumed to consist of spread footings of reinforced
concrete built on undisturbed soil at a depth of 2 feet or at the depth of maximum
frost penetration, whichever is deeper. For dwellings with basements, the
foundation is assumed to consist of spread footings of reinforced concrete built on
undisturbed soil at a depth of about 7 feet. The ratings for dwellings are based on
the soil properties that affect the capacity of the soil to support a load without
movement and on the properties that affect excavation and construction costs.The
properties that affect the load-supporting capacity include depth to a water table,
ponding, flooding, subsidence, linear extensibility(shrink-swell potential), and
compressibility. Compressibility is inferred from the Unified classification.The
properties that affect the ease and amount of excavation include depth to a water
table, ponding, flooding, slope, depth to bedrock or a cemented pan, hardness of
bedrock or a cemented pan, and the amount and size of rock fragments.
Small commercial buildings are structures that are less than three stories high and
do not have basements. The foundation is assumed to consist of spread footings
of reinforced concrete built on undisturbed soil at a depth of 2 feet or at the depth
of maximum frost penetration, whichever is deeper. The ratings are based on the
soil properties that affect the capacity of the soil to support a load without movement
and on the properties that affect excavation and construction costs.The properties
that affect the load-supporting capacity include depth to a water table, ponding,
flooding, subsidence, linear extensibility(shrink-swell potential), and
compressibility(which is inferred from the Unified classification).The properties that
affect the ease and amount of excavation include flooding, depth to a water table,
ponding, slope, depth to bedrock or a cemented pan, hardness of bedrock or a
cemented pan, and the amount and size of rock fragments.
USDA Natural Resources Web Soil Survey 10/9/2013
Conservation Service National Cooperative Soil Survey Page 1 of 3
*4100 *SO
Dwellings and Small Commercial Buildings---Albemarle County,Virginia Old Trail-28,29B,35B
Information in this table is intended for land use planning, for evaluating land use
alternatives, and for planning site investigations prior to design and construction.
The information, however, has limitations. For example, estimates and other data
generally apply only to that part of the soil between the surface and a depth of 5 to
7 feet. Because of the map scale, small areas of different soils may be included
within the mapped areas of a specific soil.
The information is not site specific and does not eliminate the need for onsite
investigation of the soils or for testing and analysis by personnel experienced in the
design and construction of engineering works.
Government ordinances and regulations that restrict certain land uses or impose
specific design criteria were not considered in preparing the information in this table.
Local ordinances and regulations should be considered in planning, in site
selection, and in design.
Report—Dwellings and Small Commercial Buildings
[Onsite investigation may be needed to validate the interpretations in this table and
to confirm the identity of the soil on a given site.The numbers in the value columns
range from 0.01 to 1.00.The larger the value, the greater the potential limitation.
The table shows only the top five limitations for any given soil.The soil may have
additional limitations]
Dwellings and Small Commercial Buildings-Albemarle County,Virginia
Map symbol and soil Pct.of Dwellings without basements Dwellings with basements Small commercial buildings
name map
unit Rating class and Value Rating class and Value Rating class and Value
limiting features limiting features limiting features
5B—Belvoir loam,2 to
7 percent slopes
Belvoir 80 Somewhat limited Very limited Somewhat limited
Depth to saturated 0.98 Depth to saturated 1.00 Depth to thin 1.00
zone zone cemented pan
Shrink-swell ! 0.50 Depth to thin 1.00 Depth to saturated 0.98
cemented pan zone
Depth to thin 0.50 Shrink-swell 0.50 Shrink-swell 0.50
cemented pan
- -- –Slope 0.13
25B—Dyke silt loam,2
to 7 percent slopes
Dyke 85 Somewhat limited Somewhat limited Somewhat limited
Shrink-swell 0.50 Shrink-swell 0.50 Shrink-swell 0.50
Slope 0.13
USDA Natural Resources Web Soil Survey 10/9/2013
1111111 Conservation Service National Cooperative Soil Survey Page 2 of 3
Nri Nor"
Dwellings and Small Commercial Buildings—Albemarle County,Virginia Old Trail-28,29B,35B
Dwellings and Small Commercial Buildings—Albemarle County,Virginia
Map symbol and soil Pct.of Dwellings without basements Dwellings with basements Small commercial buildings
name map
unit Rating class and Value Rating class and ( Value Rating class and Value,
limiting features limiting features limiting features
26B3—Dyke clay
loam,2 to 7 percent
slopes,severely
eroded
Dyke 85 Somewhat limited Somewhat limited Somewhat limited
Shrink-swell 0.50 Shrink-swell 0.50 Shrink-swell 0.50
Slope 0.13
26C3—Dyke clay
loam,7 to 15
percent slopes,
severely eroded
Dyke 85 Somewhat limited Somewhat limited Very limited
Shrink-swell 0.50 Shrink-swell 0.50 Slope 1.00
Slope 0.37 Slope 0.37 Shrink-swell 0.50
36C—Hayesville
loam,7 to 15
percent slopes
Hayesville 80 Somewhat limited Somewhat limited Very limited
Slope 0.37 Slope 0.37 Slope 1.00
37D3—Hayesville clay
loam, 15 to 25
percent slopes,
severely eroded
Hayesville 80 Very limited Very limited Very limited
Slope 1.00 Slope 1.00 Slope 1.00
Data Source Information
Soil Survey Area: Albemarle County,Virginia
Survey Area Data: Version 9, Jan 20, 2010
USDA Natural Resources Web Soil Survey 10/9/2013
glom Conservation Service National Cooperative Soil Survey Page 3 of 3
Web Soil Survey Page 1 of 2
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,Warning:Soil Map may not be valid at this scale.
Land Classifications You have zoomed in beyond the scale at which the soil map for this area is intended to be used.Mapf
particular scale.The soil surveys that comprise your AOI were mapped at 1:15,800.The design of ma
a detail shown in the resulting soil map are dependent on that map scale.
Land Management Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mappi
line placement.The maps do not show the small areas of contrasting soils that could have been show
Recreational Development scale.
Sanitary Facilities Report—Roads and Streets,Shallow Excavations,and Lawns and Landscaping
as
Soil Chemical Properties Onsite investigation may be needed to validate the interpretations in this table and to confirm the identity of
rt The numbers in the value columns range from 0.01 to 1.00.The larger the value,the greater the potential Iii
Soil Erosion only the top five limitations for any given soil.The soil may have additional limitations.
Albemarle County,Virginia
Soil Physical Properties Map symbol and soil Pct.of Local roads and streets Shallow excavations Li
Soil Qualities and Features name unit Rating class and Value Rating class and Value Ri
limiting features limiting features lir
Vegetative Productivity 5B—Belvoir loam,2 to 7
percent slopes
Waste Management Belvoir 80 Somewhat limited Very limited Very li
Depth to thin cemented 1.00 Depth to thin cemented 1.00 Depth
Water Features
pan pan
Depth to saturated zone 0.75 Depth to saturated zone 1.00 Depth
Water Management
Shrink-swell 0.50 Dense layer 0.50 Droug
Frost action 0.50 Cutbanks cave 0.10
25B—Dyke silt loam,2 to
7 percent slopes
Dyke 85 Very limited `Very limited Not lin
Low strength 1.00. Cutbanks cave 1.00
Shrink-swell 0.50 Too clayey 0.72
Frost action 0.50
26B3—Dyke clay loam,2
to 7 percent slopes,
http://websoilsurvey.nres.usda.gov/app/WebSoilSurvey.aspx 10/9/2013
Web Soil Survey Page 2 of 2
Niaie Niel?
severely eroded
Dyke 85 Very limited Very limited Not lin
Low strength 1.00 Cutbanks cave 1.00
Shrink-swell 0.50 Too clayey 0.72
Frost action 0.50
26C3—Dyke clay loam,7
to 15 percent slopes,
severely eroded
Dyke 85 Very limited Very limited Some%
Low strength 1.00 Cutbanks cave 1.00 Slope
Shrink-swell 0.50 Too clayey 0.72
Frost action 0.50 Slope 0.37
Slope 0.37
36C—Hayesville loam,7
to 15 percent slopes
Hayesville 80 Somewhat limited Somewhat limited Some
Frost action 0.50 Slope 0.37 Slope
Slope 0.37 Cutbanks cave 0.10
Low strength 0.08
37D3—Hayesville clay
loam,15 to 25 percent
slopes,severely eroded
Hayesville 80 Very limited Very limited Very li
Slope 1.00 Slope 1.00 Slope
Frost action 0.50 Cutbanks cave 0.10
Low strength 0.08
Description—Roads and Streets,Shallow Excavations,and Lawns and Landscaping
Roads and Streets,Shallow Excavations,Lawns and Landscaping
Soil properties influence the development of building sites,including the selection of the site,the design of tt
performance after construction,and maintenance.This table shows the degree and kind of soil limitations thi
streets,shallow excavations,and lawns and landscaping.
The ratings in the table are both verbal and numerical.Rating class terms indicate the extent to which the so
soil features that affect building site development.Not limited indicates that the soil has features that are vei
specified use.Good performance and very low maintenance can be expected.Somewhat limited indicates thi
that are moderately favorable for the specified use.The limitations can be overcome or minimized by special
installation.Fair performance and moderate maintenance can be expected.Very limited indicates that the soi
features that are unfavorable for the specified use.The limitations generally cannot be overcome without ma
special design,or expensive installation procedures.Poor performance and high maintenance can be expecte
Numerical ratings in the table indicate the severity of individual limitations.The ratings are shown as decimal
0.01 to 1.00.They indicate gradations between the point at which a soil feature has the greatest negative im
and the point at which the soil feature is not a limitation(0.00).
Loca/roads and streets have an all-weather surface and carry automobile and light truck traffic all year.They
or fill soil material;a base of gravel,crushed rock,or soil material stabilized by lime or cement;and a surfac
(asphalt),rigid material(concrete),or gravel with a binder.The ratings are based on the soil properties that
excavation and grading and the traffic-supporting capacity.The properties that affect the ease of excavation
bedrock or a cemented pan,hardness of bedrock or a cemented pan,depth to a water table,ponding,floodir
stones,and slope.The properties that affect the traffic-supporting capacity are soil strength(as inferred fron
number),subsidence,linear extensibility(shrink-swell potential),the potential for frost action,depth to a wa
Shallow excavations are trenches or holes dug to a maximum depth of 5 or 6 feet for graves,utility lines,op,
purposes.The ratings are based on the soil properties that influence the ease of digging and the resistance ti
bedrock or a cemented pan,hardness of bedrock or a cemented pan,the amount of large stones,and dense
of digging,filling,and compacting.Depth to the seasonal high water table,flooding,and ponding may restric
excavations can be made.Slope influences the ease of using machinery.Soil texture,depth to the water tabl
(shrink-swell potential)influence the resistance to sloughing.
Lawns and landscaping require soils on which turf and ornamental trees and shrubs can be established and n
considered in the ratings.The ratings are based on the soil properties that affect plant growth and trafficabili
established.The properties that affect plant growth are reaction;depth to a water table;ponding;depth to b
pan;the available water capacity in the upper 40 inches;the content of salts,sodium,or calcium carbonate;
The properties that affect trafficability are flooding,depth to a water table,ponding,slope,stoniness,and thi
organic matter in the surface layer.
Information in this table is intended for land use planning,for evaluating land use alternatives,and for plann
prior to design and construction.The information,however,has limitations.For example,estimates and othe
only to that part of the soil between the surface and a depth of 5 to 7 feet.Because of the map scale,small z
be included within the mapped areas of a specific soil.
The information is not site specific and does not eliminate the need for onsite investigation of the soils or for
personnel experienced in the design and construction of engineering works.
Government ordinances and regulations that restrict certain land uses or impose specific design criteria were
preparing the information in this table.Local ordinances and regulations should be considered in planning,in
design.
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a
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4n,Warning:Soil Map may not be valid at this scale.
Sanitary Facilities You have zoomed in beyond the scale at which the soil map for this area is intended to be used.Mapc
particular scale.The soil surveys that comprise your AOI were mapped at 1:15,800.The design of ma
Landfills
detail shown in the resulting soil map are dependent on that map scale.
Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mappi
line placement.The maps do not show the small areas of contrasting soils that could have been show
Sewage Disposal scale.
View Description I View Soil Report'
Options Report—Sewage Disposal
Include Minor soils ;T' Onsite investigation may be needed to validate the interpretations in this table and to confirm the identity of
The numbers in the value columns range from 0.01 to 1.00.The larger the value,the greater the potential lil
View'DescriptionI View Soil Report only the top five limitations for any given soil.The soil may have additional limitations.
a a Albemarle County,Virginia
Soil Chemical Properties Map symbol and soil name Pct.of Septic tank absorption fields Sev
map unit
Rating class and limiting Value Rating class a
Soil Erosion ® 9 g
features. featui
Soil Physical Properties 5B—Belvoir loam,2 to 7 percent
e slopes
Soil Qualities and Features Belvoir - 80 Very limited Very limited
Depth to cemented pan 1.00 Depth to cemente
Vegetative Productivity
®0 Depth to saturated zone 1.00 Depth to saturates
Waste Management Slope
....Seepage
Water Features
25B—Dyke silt loam,2 to 7
percent slopes
Water Management
Dyke 85 Somewhat limited Somewhat limited
Slow water movement 0.50 Slope
Seepage
26B3—Dyke clay loam,2 to 7
percent slopes,severely eroded
Dyke 85 Somewhat limited Somewhat limited
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Slow water movement 0.50 Slope
Seepage
26C3—Dyke clay loam,7 to 15
percent slopes,severely eroded
Dyke 85 Somewhat limited Very limited
Slow water movement 0.50 Slope
Slope 0.37 Seepage
36C—Hayesville loam,7 to 15
percent slopes
Hayesville 80 Very limited Very limited
Seepage,bottom layer 1.00 Slope
Slow water movement 0.50 Seepage
Slope 0.37
37D3—Hayesville clay loam,15 to
25 percent slopes,severely
eroded
Hayesville 80 Very limited Very limited
Slope 1.00 Slope
Seepage,bottom layer 1.00 Seepage
Slow water movement 0.50
Description—Sewage Disposal
Sewage Disposal
This table shows the degree and kind of soil limitations that affect septic tank absorption fields and sewage Iz
both verbal and numerical.Rating class terms indicate the extent to which the soils are limited by all of the s
these uses.Not limited indicates that the soil has features that are very favorable for the specified use.Good
low maintenance can be expected.Somewhat limited indicates that the soil has features that are moderately
use.The limitations can be overcome or minimized by special planning,design,or installation.Fair performai
maintenance can be expected.Very limited indicates that the soil has one or more features that are unfavorz
The limitations generally cannot be overcome without major soil reclamation,special design,or expensive in!
performance and high maintenance can be expected.
Numerical ratings in the table indicate the severity of individual limitations.The ratings are shown as decimal
0.01 to 1.00.They indicate gradations between the point at which a soil feature has the greatest negative im
and the point at which the soil feature is not a limitation(0.00).
Septic tank absorption fields are areas in which effluent from a septic tank is distributed into the soil through
perforated pipe.Only that part of the soil between depths of 24 and 72 inches or between a depth of 24 inch
is evaluated.The ratings are based on the soil properties that affect absorption of the effluent,construction z
system,and public health.Saturated hydraulic conductivity(Ksat),depth to a water table,ponding,depth to
pan,and flooding affect absorption of the effluent.Stones and boulders,ice,and bedrock or a cemented pan
Subsidence interferes with installation and maintenance.Excessive slope may cause lateral seepage and surf
downslope areas.
Some soils are underlain by loose sand and gravel or fractured bedrock at a depth of less than 4 feet below t
these soils the absorption field may not adequately filter the effluent,particularly when the system is new.A!
water may become contaminated.
Sewage lagoons are shallow ponds constructed to hold sewage while aerobic bacteria decompose the solid ar
should have a nearly level floor surrounded by cut slopes or embankments of compacted soil.Nearly impervi.
lagoon floor and sides is required to minimize seepage and contamination of ground water.Considered in the
saturated hydraulic conductivity(Ksat),depth to a water table,ponding,depth to bedrock or a cemented par
and content of organic matter.
Saturated hydraulic conductivity(Ksat)is a critical property affecting the suitability for sewage lagoons.Most
become sealed when they are used as sites for sewage lagoons.Until sealing occurs,however,the hazard of
that have a Ksat rate of more than 14 micrometers per second are too porous for the proper functioning of s,
soils,seepage of the effluent can result in contamination of the ground water.Ground-water contamination is
bedrock is within a depth of 40 inches,if the water table is high enough to raise the level of sewage in the la,
overtops the lagoon.
A high content of organic matter is detrimental to proper functioning of the lagoon because it inhibits aerobic
and cemented pans can cause construction problems,and large stones can hinder compaction of the lagoon I
uniformly deep throughout,the slope must be gentle enough and the soil material must be thick enough ove
pan to make land smoothing practical.
Information in this table is intended for land use planning,for evaluating land use alternatives,and for plann
prior to design and construction.The information,however,has limitations.For example,estimates and othe
only to that part of the soil between the surface and a depth of 5 to 7 feet.Because of the map scale,small E
be included within the mapped areas of a specific soil.
The information is not site specific and does not eliminate the need for onsite investigation of the soils or for
personnel experienced in the design and construction of engineering works.
Government ordinances and regulations that restrict certain land uses or impose specific design criteria were
preparing the information in this table.Local ordinances and regulations should be considered in planning,in
design.
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J J Clear I Search I PANF o A Scale knot to scale)v
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Enter keywords -----
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JClear Search.)Soil Reports
®� !
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Construction Materials
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CIO®
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Land Management
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Sanitary Facilities x r
Landfills
Sewage Disposal „
Soil Chemical Properties )
Soil Erosion
Soil Physical Properties 4
■inenensiimmis3,00 it
Engineering Properties
& Warning:Soil Map may not be valid at this scale.
Particle Size and Coarse Fragments You have zoomed in beyond the scale at which the soil map for this area is intended to be used.Map
comprise your AOI were mapped at 1:15,800.The design of map units and the level of detail shown r
Ph sical Soil Pro ertles Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mappi
Y p small areas of contrasting soils that could have been shown at a more detailed scale.
View,Description View Soil Report( ,
Options w Q Report—Physical Soil Properties
Include Minor Soils
Albemarle County,Virginia
View.Description) View Sob ReportI Map symbol Depth Sand Silt Clay Moist Saturated Available Li
2 2 and soil name bulk hydraulic water exte
Soil Qualities and Features density conductivity capacity
CD CO In Pct Pct Pct 9/cc micro m/sec In/In
Vegetative Productivity
®�
5B—Belvoir loam,
2 to 7 percent
Waste Management slopes
Water Features ® Belvoir 0-12 -44- -40- 7-16-25 1.30-1.60 4.00-42.00 0.10-0.18 0.
12-19 -37- -36- 20-27-35 1.35-1.65. 4.00-14.00 0.13-0.18 3.
Water Management 19-28 -65- -17- 15-18-30 1.70-1.90 0.42-1.40 0.07-0.11 0.
28-45 -35- -37- 10-28-34 1.35-1.65 4.00-14.00 0.10-0.15 0.
45-79 -35- -38- 10-28-45 1.25-1.55 0.42-14.00 0.10-0.15 3.
25B—Dyke silt
loam,2 to 7
percent slopes
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Dyke 0-8 -27- -54- 10-19-27.1.20-1.40 4.00-42.00 0.17-0.22 0.
8-43 -18- -29- 35-53-70 1.25-1.55 4.00-14.00 0.1.4-0.19 3.
43-79 -30- -30- 27-40-50 1.25-1.55 4.00-14.00 0.06-0.12 3.
26B3-Dyke clay
loam,2 to 7
percent slopes,
severely eroded
Dyke 0-8 -39- -29- 27-32-40 1.20-1.40 4.00-42.00 0.17-0.22 0.
8-43 -18- -29- 35-53-70 1.25-1.55 4.00-14.00 0.14-0.19 3.
43-79 -30- -30- 27-40-50 1.25-1.55 4.00-14.00 0.06-0.12 3.
26C3-Dyke clay
loam,7 to 15
percent slopes,
severely eroded
Dyke 0-8 -39- -29- 27-32-40 1.20-1.40 4.00-42.00 0.17-0.22 0.
8-43 -18- -29- 35-53-70 1.25-1.55'. 4.00-14.00 0.14-0.19 3.
43-79 -30- -30- 27-40-50 1.25-1.55 4.00-14.00 0.06-0.12 3.
36C-Hayesville
loam,7 to 15
percent slopes
Hayesville 0-7 -43- -40- 10-18-25 1.35-1.60 14.00-42.00 0.12-0.20 0.
7-58 -30- -30- 30-40-50 1.20-1.35 4.00-14.00 0.15-0.20 0.
58-67 -56- -15- 20-30-40 1.30-1.40 4.00-14.00 0.12-0.20 0.
67-83 -69- -16- 5-15-25 1.45-1.65 14.00-42.00 0.11-0.15 0.
37D3-Hayesville
clay loam,15 to
25 percent
slopes,severely
eroded
Hayesville 0-7 -34- -37- 20-30-40 1.30-1.50 4.00-14.00 0.12-0.20 0.
7-58 -30- -30- 30-40-50 1.20-1.35 4.00-14.00 0.15-0.20 0.
58-67 -56- -15- 20-30-40 1.30-1.40 4.00-14.00 0.12-0.20 0.
67-83 -69- -16- 5-15-25 1.45-1.65 14.00-42.00 0.11-0.15 0.
Description-Physical Soil Properties
Physical Soil Properties
This table shows estimates of some physical characteristics and features that affect soil behavior.These estir
estimates are based on field observations and on test data for these and similar soils.
Depth to the upper and lower boundaries of each layer is indicated.
Particle size is the effective diameter of a soil particle as measured by sedimentation,sieving,or micrometric
effective diameter class limits.The broad classes are sand,silt,and clay,ranging from the larger to the smal
Sand as a soil separate consists of mineral soil particles that are 0.05 millimeter to 2 millimeters in diameter.
as a percentage,by weight,of the soil material that is less than 2 millimeters in diameter.
Silt as a soil separate consists of mineral soil particles that are 0.002 to 0.05 millimeter in diameter.In this t
percentage,by weight,of the soil material that is less than 2 millimeters in diameter.
Clay as a soil separate consists of mineral soil particles that are less than 0.002 millimeter in diameter.In thi
percentage,by weight,of the soil material that is less than 2 millimeters in diameter.
The content of sand,silt,and clay affects the physical behavior of a soil.Particle size is important for engine(
hydrologic qualities,and for soil classification.
The amount and kind of clay affect the fertility and physical condition of the soil and the ability of the soil to
potential,saturated hydraulic conductivity(Ksat),plasticity,the ease of soil dispersion,and other soil proper
earthmoving operations.
Moist bulk density is the weight of soil(ovendry)per unit volume.Volume is measured when the soil is at fie
bar(33kPa or 10kPa)moisture tension.Weight is determined after the soil is dried at 105 degrees C.In the I
expressed in grams per cubic centimeter of soil material that is less than 2 millimeters in diameter.Bulk dery
potential,available water capacity,total pore space,and other soil properties.The moist bulk density of a so
on soil texture,a bulk density of more than 1.4 can restrict water storage and root penetration.Moist bulk d(
matter,and soil structure.
Saturated hydraulic conductivity(Ksat)refers to the ease with which pores in a saturated soil transmit water
per second.They are based on soil characteristics observed in the field,particularly structure,porosity,and t
design of soil drainage systems and septic tank absorption fields.
Available water capacity refers to the quantity of water that the soil is capable of storing for use by plants.TI
soil for each soil layer.The capacity varies,depending on soil properties that affect retention of water.The rr
texture,bulk density,and soil structure.Available water capacity is an important factor in the choice of plant
irrigation systems.Available water capacity is not an estimate of the quantity of water actually available to p
Linear extensibility refers to the change in length of an unconfined clod as moisture content is decreased fror
between the water content of the clod at 1/3-or 1/10-bar tension(33kPa or 10kPa tension)and oven drynes
the whole soil.The amount and type of clay minerals in the soil influence volume change.
Linear extensibility is used to determine the shrink-swell potential of soils.The shrink-swell potential is low if
3 to 6 percent;high if 6 to 9 percent;and very high if more than 9 percent.If the linear extensibility is more
roads,and other structures and to plant roots.Special design commonly is needed.
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Organic matter is the plant and animal residue in the soil at various stages of decomposition.In this table,tt
by weight,of the soil material that is less than 2 millimeters in diameter.The content of organic matter in a
Organic matter has a positive effect on available water capacity,water infiltration,soil organism activity,and
organisms.
Erosion factors are shown in the table as the K factor(Kw and Kf)and the T factor.Erosion factor K indicates
K is one of six factors used in the Universal Soil Loss Equation(USLE)and the Revised Universal Soil Loss Eq
sheet and rill erosion in tons per acre per year.The estimates are based primarily on percentage of silt,sand
range from 0.02 to 0.69.Other factors being equal,the higher the value,the more susceptible the soil is to
Erosion factor Kw indicates the erodibility of the whole soil.The estimates are modified by the presence of ro
Erosion factor Kf indicates the erodibility of the fine-earth fraction,or the material less than 2 millimeters in
Erosion factor T is an estimate of the maximum average annual rate of soil erosion by wind and/or water tha
period.The rate is in tons per acre per year.
Wind erodibility groups are made up of soils that have similar properties affecting their susceptibility to wind
most susceptible to wind erosion,and those assigned to group 8 are the least susceptible.The groups are de
Wind erodibility index is a numerical value indicating the susceptibility of soil to wind erosion,or the tons per
There is a close correlation between wind erosion and the texture of the surface layer,the size and durability
reaction.Soil moisture and frozen soil layers also influence wind erosion.
Reference:
United States De.artment of A.riculture Natural Resources Conservation Service.National soil surve handt
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......... ....._ Printable Versia
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Search Soil Map
Clear Saarch o�a w Li scale I(notto scale)v..
Basic Search
42g ,jij,Enter keywords , " � a,'
w
Advanced Search `� +" 3
.J Clean search;E I k 1
Soil Reports f
......1 dpse AIL ® , �� � �.�'�� a�'� �. `
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Disaster Recovery Planning ,
Land Classifications . . , s
" a ,,.
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Sanitary Facilities � '
Soil Chemical Properties LO i i i ti �
()CD:Soil Erosion Warning:Soil Map may not be valid at this scale.
You have zoomed in beyond the scale at which the soil map for this area s intended to be used.Map
Soil Physical Properties particular scale.The soil surveys that comprise your AOI were mapped ati 1:15,800.The design of ma
detail shown in the resulting soil map are dependent on that map scale.
Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mappi
Soil Qualities and Features line placement.The maps do not show the small areas of contrasting soils that could have been show
scale.
Soil Features
View Description I View Soil Report Report—Soil Features
Options
CD 0 Albemarle County,
Subsidence
Virginia
Include Minor Soils '
Map symbol Restrictive Layer Potential for
view Description I View Soil Report and soil name Kind
to top
Depth Thickness Hardness Initial Total frost action U
�� ..
Vegetative Productivity
In
In In In
5B—Belvoir
Waste Management loam,2 to 7
ra percent slopes
Water Features Belvoir Fragipan 16-30 — Weakly — — Moderate High
fs( cemented
Water Management Dyke silt
25B—loam,2 tol s7
pi
slopes
Dyke — — — —
Moderate
High
26B3—Dyke
clay loam,2 to
7 percent
slopes,
severely
eroded
Dyke — — — — Moderate High
26C3—Dyke
clay loam,7 to
15 percent
slopes,
10/9/2013
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Web Soil Surveys Page 2 of 2
severely eroded
Dyke - — - — Moderate High
•
36C—Hayesville
loam,7 to 15
percent slopes
Hayesville — — — — Moderate Mode
37D3-
Hayesville clay
loam,15 to 25
percent
slopes,
severely
eroded
Hayesville — — — — Moderate Mode
Description—Soil Features
Soil Features
This table gives estimates of various soil features.The estimates are used in land use planning that involves
considerations.
A restrictive layer is a nearly continuous layer that has one or more physical,chemical,or thermal properties
the movement of water and air through the soil or that restrict roots or otherwise provide an unfavorable roo
are bedrock,cemented layers,dense layers,and frozen layers.The table indicates the hardness and thickne<-
both of which significantly affect the ease of excavation.Depth to top is the vertical distance from the soil su
boundary of the restrictive layer.
Subsidence is the settlement of organic soils or of saturated mineral soils of very low density.Subsidence gel
desiccation and shrinkage,or oxidation of organic material,or both,following drainage.Subsidence takes pla
a period of several years.The table shows the expected initial subsidence,which usually is a result of drainac
which results from a combination of factors.
Potential for frost action is the likelihood of upward or lateral expansion of the soil caused by the formation o
(frost heave)and the subsequent collapse of the soil and loss of strength on thawing.Frost action occurs whi
the freezing zone of the soil.Temperature,texture,density,saturated hydraulic conductivity(Ksat),content
depth to the water table are the most important factors considered in evaluating the potential for frost action
soil is not insulated by vegetation or snow and is not artificially drained.Silty and highly structured,clayey sc
table in winter are the most susceptible to frost action.Well drained,very gravelly,or very sandy soils are th
heave and low soil strength during thawing cause damage to pavements and other rigid structures.
Risk of corrosion pertains to potential soil-induced electrochemical or chemical action that corrodes or weake
concrete.The rate of corrosion of uncoated steel is related to such factors as soil moisture,particle-size distr
electrical conductivity of the soil.The rate of corrosion of concrete is based mainly on the sulfate and sodium
moisture content,and acidity of the soil.Special site examination and design may be needed if the combinati
severe hazard of corrosion.The steel or concrete in installations that intersect soil boundaries or soil layers is
corrosion than the steel or concrete in installations that are entirely within one kind of soil or within one soil I
For uncoated steel,the risk of corrosion,expressed as low,moderate,or high,is based on soil drainage class
resistivity near field capacity,and electrical conductivity of the saturation extract.
For concrete,the risk of corrosion also is expressed as low,moderate,or high.It is based on soil texture,aci
sulfates in the saturation extract.
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