HomeMy WebLinkAboutSUB201000156 Assessment - Environmental 2010-12-22 •
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S.) LOIW
ALBEMARLE
NELSON FLWANNA
Thomas Jefferson Soil and Water Conservation District
706 Forest St, Ste G
Charlottesville, VA 22903
975-0224
December 22, 2010
TO: Summer Frederick
Planning Department
RE: Soils Report and Comments for:
Willow Lake View
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Map Unit Description (Brief, Generated)
Albemarle County,Virginia
[Minor map unit components are excluded from this report]
Map unit: 12C-Catoctin silt loam,7 to 15 percent slopes
Component: Catoctin(80%)
The Catoctin component makes up 80 percent of the map unit.Slopes are 7 to 15 percent. This component is on hiIslopes,piedmonts.
The parent material consists of residuum weathered from greenstone.Depth to a root restrictive layer,bedrock,lithic,is 20 to 40 inches.
The natural drainage class is well drained. Wafer movement in the most restrictive layer is high.Available water to a depth of 60 inches
is low. 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 1 percent. Nonirrigated land capability classification is 3e. This soil does
not meet hydric criteria.
Map unit: 71 B-Rabun clay loam,2 to 7 percent slopes
Component: Rabun(80%)
The Rabun component makes up 80 percent of the map unit.Slopes are 2 to 7 percent. This component is on uplands,interfluves. 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 moderate. 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 2e This sob
does not meet hydric criteria.
Map unit: 72C3-Rabun clay,7 to 15 percent slopes,severely eroded
Component: Rabun(80%)
The Rabun component makes up 80 percent of the map unit.Slopes are 7 to 15 percent. This component is on interfluves,uplands. 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 moderate. 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 0 percent. Nonirrigated land capability classification is 4e. This soil
does not meet hydric criteria.
Map unit: 72D3-Rabun clay,15 to 25 percent slopes,severely eroded
Component: Rabun(80%)
The Rabun component makes up 80 percent of the map unit.Slopes are 15 to 25 percent. This component is on interfluves,uplands.
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 moderate. 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 0 percent. Nonirrigated land capability classification is 6e.
This soil does not meet hydric criteria.
Map unit: 88-Udorthents,loamy
Component: Udorthents(85%)
The Udorthents component makes up 85 percent of the map unit.Slopes are 2 to 25 percent.This component is on interfluves,uplands,
uplands. The parent material consists of residuum weathered from granite and gneiss_Depth to a root restrictive layer is greater than 60
inches. Available water to a depth of 60 inches is very low.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. This soil does not meet hydric criteria.
USDA Natural Resources
Tabular Data Version:8
= Conservation Service Tabular Data Version Date: 12/15/2008 Page 1 of 1
Dwellings and Small Commercial Buildings
Albemarle County,Virginia
[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]
Pct. Dwellings without basements Dwellings with basements Small commercial buildings
Map symbol of
and soil name map -- ---
unit Rating class and Value Rating class and Value Rating class and Value
limiting features limiting features limiting features
12C:
Catoctin 80 Somewhat eltnIted Very limited Very limited
Datith to hard 0.64 Depth to hard 1.00 Slope 1.00
bedrock bedrock Depth to hard 0.64
Slope 0.37 Slope 0.37 bedrock
71 B:
Rabun 80 Not limited Not limited Somewhat limited
Slope 0.13
72C3:
Rabun 80 Somewhat limited Somewhat limited Very limited
Slope 0.37 Slope 0.37 Slope 1.00
72D3:
Rabun 80 Very limited Very limited Very limited
Slope 1.00 Slope 1.00 Slope 1.00
88:
Udorthents 85 Not rated Not rated Not rated
USDANatural Resources major report shows only the alor son ins each map unrt Others may exist
Tabular Data Version:8
--1111111 Conservation Service Tabular Data Version Date: 12/15/2008 Page 1 of 1
Roads and Streets, Shallow Excavations, and Lawns and Landscaping
Albemarle County,Virginia
[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)
Pct. Local roads and streets Shallow excavations Lawns and landscaping
Map symbol of
and soil name map
unit Rating class and Rating class and Rating class and
limiting features Value limiting features Value limiting features Value
12C:
Catoctin 80 Somewhat limited Very limited Somewhat limited
Depth to hard 0.64 Depth to hard 1.00 Depth to bedrock 0.65
bedrock bedrock Slope 0.37
Frost action 0.50 Slope 0.37 Droughty 0.16
Slope 0.37 Cutbanks cave 0.10 Large stones content 0.01
71 B:
Rabun 80 Somewhat limited SOmeWhjt*in*ad Not limited
Frost action 0.50 Too dayoy 0.97
Low strength 010 Cutbanks cave 0.10
72C3:
Rabun 80 Somewhat limited Somewhat limited Somewhat limited
Frost action 0.50 Too clayey 0.97 Slope 0.37
Slope 0.37 Slope 0.37
Low strength 0.10 Cutbanks cave 0.10
72 D3:
Rabun 80 Very limited Very limited Very limited
Slope 1.00 Slope 1.00 Slope 1.00
Frost action 0.50 Too clayey 0.97
Low strength 010 Cutbanks cave 0.10
88:
Udorthents 85 Not rated Not rated Not rated
USDANatural Resources This report shows only the major sods in each map unit Others may exist.
Tabular Data Version:8
Conservation Service Tabular Data Version Date: 12/15/2008 Page 1 of 1
Soil Features
Albemarle County,Virginia
Restrictive layer Subsidence Risk of corrosion
Map symbol Potential
for frost
and soil name Kind Depth to Thickness Hardness Initial Total action Uncoated Concrete
top steel
In In In In
12C:
Catoctin Lithic bedrock 20-40 -- Indurated -- --- Moderate High Moderate
71B:
Rabun -- --- -- -- -- -- Moderate High Moderate
72C3:
Rabun •-- — -•- -- —• Moderate High Moderate
72D3:
Rabun -- --- -- -- — -- Moderate High Moderate
88:
Udorthents --- --- -- --- — -- -- --- ---
USDANatural Resources This report shows only the major soils In each map unit Others may exist
Tabular Data Version:8
- Conservation Service Tabular Data Version Date:12/15/2008 Page 1 of 1
Physical Soil Properties
Albemarle County.Virginia
Erosion factors VYlnd Wind
Saturated Available Linear
Map symbol Moist bulk Organic erodi- erodi-
and soil name Depth Sand Silt Clay density matter water extensi- matter bility bility
conductivity capacity bility
Kw Kf T group index
In Pct Pot Pct 9/cc micro m/sec in/In Pot Pct
12C:
Catoctin 0-5 -- --- 5-20 1.20-1.50 14.00-42.00 0.14-0.20 0.0-2.9 0.5-2.0 .32 .43 2 5 56
5-18 -- --- 10-35 1.20-1.50 14.00-42.00 0.08-0.16 0.0-2.9 0.0-0.5 .17 .24
18-28 -- --- 10-25 1.20-1.50 14.00-42.00 0.04-0.15 0.0-2.9 0.0-0.5 .17 .43
28-79 -- --- --- --- 0.00-42.00 -- -- --- -- --
71 B:
Rabun 0-6 -- -- 18-35 1.30-1.55 4.00-14.00 0.12-0.18 0.0-2.9 1.0-2.0 .32 .32 4 6 48
6-48 -- ..-- 35-80 1.20-1.50 4.00-14.00 0.12-0.18 0.0-2.9 0.0-0.5 .28 .28
48-79 -- -- 27-50 1.20-1.50 4.00-14.00 0.10-0.15 0.0-2.9 0.0-0.5 .28 .28
72C3:
Rabun 0-4 --- --- 30-50 1.20-1.50 4.00-14.00 0.10-0.15 0.0-2.9 0.0-0.5 .32 .32 3 6 48
4-48 -- --- 35-80 1.20-1.50 4.00-14.00 0.12-0.18 0.0-2.9 0.0-0.5 .28 .28
48-79 -- --- 27-50 1.20-1.50 4.00-14.00 0.10-0.15 0.0-2.9 0.0-0.5 .28 .28
7203:
Rabun 0-4 --- --- 30-50 1,20.1,50 4.00-14.00 0.10-0.15 0.0-2.9 0.0-0.5 .32 .32 3 6 48
4-48 -- --- 35-80 1.20-1.50 4.00.14.00 0.12-0.18 0.0-2.9 0.0.0.5 .28 .28
48-79 -- --- 27-50 1.20-1.50 4.00-14.00 0.10-0.15 0.0-2.9 0.0-0.5 .28 .28
88:
Udorthents --- --- --- --- ---
USDANatural Resources This report shows only the major rolls In each map unit Others may exist
Tabular Data Version:8
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Conservation Service Tabular Data Version Date:12/15/2008 Page 1 of 1