20120285_Appendix M_Soils Information_20101222

APPENDIX M APPENDICES

APRIL 2009 GASTON EAST-WEST CONNECTOR DEIS

APPENDIX M
SOILS INFORMATION

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ounty,
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Charlotte Douglas Int'l Airport
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Gaston&MeckAllSoils.mxd AKH 4.10.09
Legend DSA Corridor Preliminary ROW County Lines State Line Interstates Gaston Soils AmB AmD ApB CH CeB2 CeD2 CfB CfD Co GaB2 GaD2 GaE HeB HuB LgB MaB2 MaD2 MaE PaD2 PaE PaF Pt Ro TaB TaD TaE Ud Ur UwF VaB VaD WeD WkD WkF WnB WnD WoA wMecklenburg Soils ApB ApD CeB2 CeD2 CuB CuD DaB DaD DaE EnB EnD GeB2 GeD2 GoB GoD HeB HuB IrA IrB IuB LgB MO MS MeB MeD MkB PB3 PaE PaF Pt UL UO Ur VaB VaD WkB WkD WkE WkF WuD w WSource: Gaston County and Mecklenburg County GIS Map printed April 2009.01.50.75 Miles Appendix MSTIP PROJECT NO. U-3321 GASTON EAST-WEST CONNECTORGaston County and Mecklenburg County PROJECT AREA SOILS
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Mecklenburg Co.
Gaston East-West Connector
STIP Project U-3321
Draft EIS
APPENDIX M - TABLE 2 - PROPERTIES OF SOILS PRESENT IN THE GASTON EAST-WEST CONNECTOR DETAILED STUDY ALTERNATIVES
Uncoated SteelConcrete
0-8 Gravelly loam A-4 Moderate High Low
45-60Weathered bedrock --- ---------
0-10 Sandy loam A-2 ModerateModerate Low
10-41Sandy clay, clay loam, clayA-7 ModerateModerate Low
48-60 Variable ------------
0-11 Sandy loam A-2 ModerateModerate Low
11-43Sandy clay, clay loam, clayA-7 ModerateModerateModerate
0-6 Loam A-4, A-6, A-7 High Moderate Low
45-60 Variable ------------
0-6 Sandy clay loam A-4, A-6 ModerateModerate Low
6-58 Clay, clay loam A-7, A-5 ModerateModerate Low
58-80 Variable --- ---------
0-6 Sandy clay loam A-4, A-6 ModerateModerate Low
6-58 Clay, clay loam A-7, A-5 ModerateModerate Low
58-80 Variable --- ---------
0-6 Sandy clay loam A-4, A-6 ModerateModerate Low
6-58 Clay, clay loam A-7, A-5 ModerateModerate Low
58-80 Variable ------------
0-6 Sandy clay loam A-4, A-6 ModerateModerate Low
6-58 Clay, clay loam A-7, A-5 ModerateModerate Low
58-80 Variable ------------
0-8 Loam A-4 ModerateModerate Low
42-62 Variable ------------
0-7 Sandy clay loam A-6, A-4 High Moderate Low
7-16 Clay loam A-6 High Moderate Low
16-99 Clay A-7, A-6 High Moderate Low
0-7 Sandy clay loam A-6, A-4 High Moderate Low
7-16 Clay loam A-6 High Moderate Low
16-99 Clay A-7, A-6 High Moderate Low
7-36 Clay loam, clay sandy clay
loam A-7-6 High Moderate High
36-60Weathered bedrock ------------
7-36 Clay loam, clay sandy clay
loam A-7-6 High Moderate High
36-60Weathered bedrock ------------
0-6 Sandy clay loam A-4, A-6 High Moderate Low
6-47 Clay, clay loam A-7 High ModerateModerate
57-72 Variable ------------
0-6 Sandy clay loam A-4, A-6 High Moderate Low
6-47 Clay, clay loam A-7 High ModerateModerate
57-72 Variable ------------
0-6 Loam A-2, A-4 High Moderate Low
6-47 Clay, clay loam A-7 High ModerateModerate
57-72 Variable ------------
0-8 Sandy loam A-2, A-4 High High Low
13-39Clay loam, sandy clay, clayA-7 High High High
39-60 Variable ------------
0-8 Sandy loam A-2, A-4 High High Low
8-11Sandy clay loam, clay loamA-6, A-7 High High Moderate
11-40Clay loam, sandy clay, clayA-7 High High High
40-64Weathered bedrock ------------
0-4 Silt loam A-4, A-6 High High Low
36-60 Variable ------------
0-5 Gravelly silt loam A-4, A-6, A-7 High High Low
37-50Unweathered bedrock ------------
0-4 Sandy clay loam A-4, A-6 High Moderate Low
4-28Clay, clay loam, sandy clayA-7 High Moderate Low
36-60 Variable ------------
0-4 Sandy clay loam A-4, A-6 High Moderate Low
4-28Clay, clay loam, sandy clayA-7 High Moderate Low
36-60 Variable ------------
0-5 Sandy loam A-2, A-4 High Moderate Low
5-31Clay, clay loam, sandy clayA-7 High Moderate Low
38-60 Variable ------------
0-14 Loam A-4, A-6 Moderate High Low
43-65 Variable ------------
0-7 Fine sandy loam A-4, A-6, A-7-6High Moderate Low
7-34 Clay A-7 High ModerateModerate
34-65Weathered bedrock ------------
0-4 Sandy clay loam A-4, A-6 High High Low
4-28Sandy clay, clay loam, clayA-6, A-7 High High Low
Low
Low
Low
Low
Low
Low
Moderate
Moderate
Low
Low
Low
Low
Low
Low
Low
Low
Low
LowModerateModerate
High Moderate
Moderate
HighHigh
43-66 Sandy clay, clay loam, sandy
clay loam A-4, A-6
0-7 Sandy loam A-2-4, A-4, A-6, A-2-
6
0-7
A-2, A-4, A-6
Gaston sandy clay
loam (GaB2)Poor: low strength Severe: low
strength
47-57Poor: low strength
Fair: low strength,
wetness Severe: flooding
47-57 Clay loam, sandy clay loam,
loam
27-45 Loam, silt loam, very fine
sandy loam A-4, A-6, A-7
A-4, A-7-6, A-6Sandy clay loam, clay loam,
fine sandy loam
Gaston loam
(GaE)Poor: low strength Severe: low
strength, slope
Lignum silt loam
(LgB)Poor: low strength Severe: low
strength
Severe: low
strength
Moderate: low
strength, slope
Moderate
Moderate
Moderate
High
Moderate
High
High
A-4, A-6, A-7
Severe: low
strength
8-42 Silty clay loam, fine sandy
loam, loam A-4, A-6, A-7
A-7
Clay loam, sandy clay loam,
loam A-7
Severe: low
strength, shrink-
swell
A-4, A-6
Severe: low
strength
High
High
Moderate
Moderate
High
47-57 Clay loam, sandy clay loam,
loam A-4, A-6, A-7
A-7
Moderate
High
High Moderate
Moderate
Moderate
High
High
Moderate: slope,
low strength
Moderate: low
strength
Severe: slope
Severe: shrink-
swell, low strength
Moderate
Moderate
High
Poor: low strength
High
High
28-36Poor: low strength
Poor: low strength
Severe: low
strength
A-2-4, A-4, A-6, A-2-
6
Poor: low
strength, shrink-
swell
Poor: shrink-swell,
low strength
Silty clay loam, silty clay, clay
Sandy loam
Severe: shrink-
swell, low strength
Severe: low
strength
4-36
Severe: shrink-swell
Fair: low strength,
slope
Fair: low strength,
slope
Fair: low strength,
slope
Fair: low strength,
slope
Poor: low strength
Poor: low strength
Madison sandy
clay loam (MaB2)
Clay loam, silty clay loam, silty
loamAlamance variant
gravelly loam
(AmB)
Sandy clay, clay loam, sandy
loay loam
Fair: low strengthAppling sandy
loam (ApB)
6-45
Loam, sandy clay loam, clay
loam
Monacan (MO)
Poor: shrink-swell,
low strength
Moderate
Moderate High
Mecklenburg fine
sandy loam (MeD)
Poor: low strength
High
Fair: wetness
Poor: low strength
Severe: floods
Severe: low
strength, slope
14-43 Fine sandy loam, sandy clay
loam, silty clay loam
Madison sandy
clay loam (MaD2)
Madison sandy
loam (MaE)
Pacolet sandy clay
loam (PaD2)Good 28-36 Clay loam, sandy clay loam,
sandy loam
Enon sandy loam
(EnD)
Gaston sandy clay
loam (GaD2)
A-4, A-6
5-37Silty clay loam, silty clay, clayA-7
Helena sandy
loam (HeB)
Lignum gravelly
silt loam (LgB)
Helena sandy
loam (HeB)
Poor: shrink-swell,
low strength
Cecil-Urban land
complex (CfD)
Davidson sandy
clay loam (DaD)
Davidson sandy
clay loam (DaE)
Enon sandy loam
(EnB)
Congaree loam
(Co)
Severe: low
strength, wetness,
flooding
Poor: low
strength, wetness
Chewacla loam
(CH)
Loam, sandy clay loam, clay
loam
Cecil sandy clay
loam ( CeB2)
Cecil sandy clay
loam ( CeD2)
Cecil-Urban land
complex (CfB)
Moderate: low
strength
Moderate: slope,
low strength
Moderate: low
strength
A-4, A-6
31-38 Loam, sandy clay loam, clay
loam A-4, A-6
28-36
Risk of Corrosion Shrink/Swell
Potential
Suitability as
Roadfill
Suitability for
Road
Construction
Depth
(Inches)USDA Texture AASHTO
Classification
Soil Name and
Symbol
Appling sandy
loam (ApB)
Fair: low strength,
area reclaim
A-4, A-6, A-7
Slight
08-27
Poor: low strength Severe: low
strength
41-48
Moderate: low
strength
Gaston East-West Connector
STIP Project U-3321
Draft EIS
APPENDIX M - TABLE 2 - PROPERTIES OF SOILS PRESENT IN THE GASTON EAST-WEST CONNECTOR DETAILED STUDY ALTERNATIVES
Uncoated SteelConcrete
Risk of Corrosion Shrink/Swell
Potential
Suitability as
Roadfill
Suitability for
Road
Construction
Depth
(Inches)USDA Texture AASHTO
Classification
Soil Name and
Symbol
36-60 Variable ------------
0-5 Sandy loam A-2, A-1-b High High Low
5-27Sandy clay, clay loam, clayA-6, A-7 High High Low
39-60 Variable ------------
0-3 Sandy loam A-2 High High Low
3-31Sandy clay, clay loam, clayA-6, A-7 High High Low
31-65Weathered bedrock ------------
0-5 Sandy loam A-2, A-1-b High High Low
5-27Sandy clay, clay loam, clayA-6, A-7 High High Low
39-60 Variable ------------
0-3 Sandy loam A-2 High High Low
3-31Sandy clay, clay loam, clayA-6, A-7 High High Low
31-65Weathered bedrock ------------
0-6 Gravelly loam A-4 High High Low
6-48Clay loam, silty clay, clay A-7 High High Moderate
48-58 Variable ------------
58-62Weathered bedrock ------------
0-6 Gravelly loam A-4 High High Low
6-48Clay loam, silty clay, clay A-7 High High Moderate
48-58 Variable ------------
58-62Weathered bedrock ------------
0-6 Gravelly loam A-4 High High Low
6-48Clay loam, silty clay, clay A-7 High High Moderate
48-58 Variable ------------
58-62Weathered bedrock ------------
0-4 Stony loam A-4 ModerateModerate Low
4-30Silty clay, clay loam, clayA-4, A-6, A-7ModerateModerateModerate
40-50 Variable ------------
50-60Weathered bedrock ------------
0-5 Sandy loam A-2, A-4 High High Low
5-37Clay loam, sandy clay, clayA-7 High High Moderate
37-60 Variable ------------
0-5 Sandy loam A-2, A-4 High High Low
5-37Clay loam, sandy clay, clayA-7 High High Moderate
37-60 Variable ------------
0-7 Sandy loam A-4, A-2-4Moderate High Low
7-10Loam, sandy clay loam A-4, A-6 Moderate High Low
10-24Sandy clay, clay loam clayA-6, A-7 Moderate High Moderate
33-62 Variable ------------
0-6 Loam A-2, A-4 ModerateModerate Low
15-60Weathered bedrock ------------
0-7 Loam A-2, A-4 ModerateModerate Low
15-45Weathered bedrock ------------
0-7 Loam A-2, A-4 ModerateModerate Low
15-45Weathered bedrock ------------
0-6 Loam A-2, A-4 ModerateModerate Low
15-60Weathered bedrock ------------
0-7 Loam A-2, A-4 ModerateModerate Low
15-45Weathered bedrock ------------
0-8 Loam A-4, A-6 High Low Low
8-28 Clay, clay loam A-7 High Low High
36-60 Variable ------------
0-8 Loam A-4, A-6 High Low Low
8-28 Clay, clay loam A-7 High Low High
36-60 Variable ------------
0-6 Loam A-4, A-6 High Moderate Low
Sources: Soil Survey of Gaston County, North Carolina (USDA NRCS, 1989) and Soil Survey of Mecklenburg County, North Carolina (USDA NRCS, 1980)
The Unified and American Association of State Highway and Transportation Officials (AASHTO) soil classification systems categorize soils according to their probable engineering behavior.
GM = Silty gravels, gravel-sand-silt mixtures ML = Inorganic silts, very fine sands, clayey silts
GC = Clayey gravels, gravel-sand-clay mixtures CL = Inorganic clays, gravelly clays, sandy clays
SM = Silty sands, sand-silt mixtures MH = Inorganic silts, fine sand or silty soils, elastic silts
The AASHTO system was developed to help determine the relative quality of soils for use in roadway embankments, subgrades, subbases, and bases (Holtz, 1981:65). Soils are classified into eight groups, A-1 to A-8;
with several subgroups. A-1 soils are well graded. A-2 soils are granular, but contain silts and clays. A-3 soils are clean, poorly graded sands. A-4 to A-7 soils are silty-clay materials. A-8 soils are highly organic.
In the Unified system, soils in which “fines” (silts and clays do not affect engineering performance are classified according to grain size, and soils in which fines do not control behavior are classified according to their
plasticity characteristics. The symbols in the table are defined as follows (Holtz, 1981:52):
Varies Varies Varies
Varies Varies Varies Varies Varies
Moderate
Moderate
Moderate
Moderate
Moderate
Moderate
Moderate
Moderate
Low
Moderate
Low
Low
Moderate
Varies
ModerateModerate
ModerateModerate
ModerateModerate
ModerateModerate
ModerateModerate
High Moderate
High Moderate
High Low
High Low
ModerateModerate
Moderate High
High High
High High
Clay loam, clay, sandy clay
loam A-6, A-7
7-15 Clay loam, clay, sandy clay
loam A-6, A-7
6-15 Clay loam, clay sandy clay
loam A-6, A-7
7-15 Clay loam, clay, sandy clay
loam A-6, A-7
Varies Varies Varies
30-40 Clay loam, silt loam, silty clay
loam A-7
45-60 Sandy loam, sandy clay loam,
clay loam A-2, A-4, A-6, A-7
28-36 Clay loam, sandy clay loam,
loam A-4, A-6, A-7
6-45 Sandy clay loam, sandy clay,
clay A-2, A-7
28-36 Clay loam, sandy clay loam,
loam A-4, A-6, A-7
24-33 Sandy clay loam, clay loam,
loam A-4, A-6
6-15 Clay loam, clay sandy clay
loam A-6, A-7
7-15
Clay loam, sandy clay loam,
sandy loam A-2, A-4, A-6
27-39 Clay loam, sandy clay loam,
sandy loam A-2, A-4, A-6
Pacolet sandy
loam (PaE) Severe:slopeSevere: slope 27-39
Severe: shrink-
swell, low strength
Severe: shrink-
swell, low strength
Severe: wetness,
low strength
Moderate: slope
Severe: slope
Severe: slope
Severe: slope
Severe: low
strength
Severe: low
strength
Moderate: shrink-
swell, low strength,
slope
Moderate: depth to
rock, shrink-swell,
slope
Severe: slope, low
strength
Varies
Varies
Severe: low
strength, slope
Severe: slope
Severe: slope
Severe: low
strength
Severe: low
strength
Severe: slope
Fair: area reclaim,
thin layer
Poor: wetness,
low strength
Pacolet Sandy
loam (PaE)
Fair: low strength,
slope
Pacolet sandy
loam (PaF)Poor: slope
Fair: slope, thin
layer
Poor: depth to
rock, thin layer
Poor: slope
Fair: area reclaim,
thin layer
Poor: low strength
Moderate: too
clayey, slope
Poor: depth to
rock, thin layer
Fair: thin layer
Varies
Varies
Severe: slope
Poor: slow
strength
Severe: slope
Poor: low strength
Poor: low strength
Poor: low strength
Worsham loam
(WoA)
Wilkes loam
(WkF)
Wilkes Loam
(WkF)
Winnsboro loam
(WnB)
Winnsboro loam
(WnD)
Wedowee sandy
loam (WeD)
Wilkes loam
(WkD)
Wilkes loam
(WkD)
Wilkes loam
(WkE)
Urban Land (Ur)
Uwharrie stony
loam (UwF)
Vance sandy loam
(VaB)
Vance sandy loam
(VaD)
Tatum gravelly
loam (TaB)
Tatum gravelly
loam (TaD)
Tatum gravelly
loam (TaE)
Udorthents, loamy
(Ud)
Pacolet sandy
loam (PaF)