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tubes with sharp cutting edges were pushed hydraulically into the ground to obtain relatively intact
samples of cohesive or moderately cohesive soils. The samples were sealed and transported to the
laboratory for testing and classification.
Our exploration team prepared field boring logs as part of standard drilling operations. The field
logs included sampling depths, penetration distances, and other relevant sampling information.
Field logs also included water level observations, visual classifications of materials encountered
during drilling, and our interpretation of subsurface conditions between samples. Typed boring
logs included with the report represent the geotechnical engineer's interpretation of the field logs,
and include modifications based on laboratory observations and tests.
Laboratory Testing
Water content tests (ASTM D2216) and density determinations (ASTM D7263) were performed on
the samples. The unconfined compressive strength of the samples was estimated with a hand
penetrometer test. In addition, an Atterberg Limits test (ASTM D4318) was performed on a selected
sample. The results of these laboratory tests are provided on the typed boring logs.
The samples were classified in the laboratory based on visual observation and texture (ASTM
D2488). Additional laboratory testing could be performed to more accurately classify the samples.
The soil descriptions presented on the boring logs for native soils are in general accordance with
our enclosed General Notes and Unified Soil Classification System (USCS, ASTM D2487). The
estimated group symbol for the USCS is also shown on the boring logs, and a brief description of
the Unified System is included in this report.
Procedural standards noted above are for reference to methodology in general. In some cases,
variations to methods are applied as a result of local practice or professional judgment.
Responsive ■ Resourceful ■ Reliable
SITE LOCATION AND EXPLORATION PLANS
Contents:
Site Location Plan
Exploration Plan
SITE LOCATION
McDonald’s Restaurant #0260238 ■ Omaha, Nebraska
September 30, 2019 ■ Terracon Project No. 05195113
Note to Preparer: This is a large table with outside borders. Just click inside the table
above this text box, then paste your GIS Toolbox image.
When paragraph markers are turned on you may notice a line of hidden text above and
outside the table – please leave that alone. Limit editing to inside the table.
The line at the bottom about the general location is a separate table line. You can edit
it as desired, but try to keep to a single line of text to avoid reformatting the page.
SITE LOC ATION
DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES MAP PROVIDED BY GOOGLE MAPS
SITE
EXPLORATION PLAN
McDonald’s Restaurant #0260238 ■ Omaha, Nebraska
September 30, 2019 ■ Terracon Project No. 05195113
Note to Preparer: This is a large table with outside borders. Just click inside the table
above this text box, then paste your GIS Toolbox image.
When paragraph markers are turned on you may notice a line of hidden text above and
outside the table – please leave that alone. Limit editing to inside the table.
The line at the bottom about the general location is a separate table line. You can edit
it as desired, but try to keep to a single line of text to avoid reformatting the page.
EXPLOR ATION PLAN
DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES TOPOGRAPHIC MAP AND IMAGERY COURTESY OF DOUGLAS COUNTY GIS; SITE PLAN OVERLAY PROVIDED BY MCDONALD’S
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EXPLORATION RESULTS
Contents:
Boring Logs
GeoModel
9000+(HP)
8000(HP)
9000+(HP)
9000+(HP)
8000(HP)
8000(HP)
8000(HP)
14
13
10
10
12
11
12
96
83
85
83
80
87
93
Grass, root zone at surfaceFILL - LEAN CLAY , trace sand, brown to dark brown, trace rootlets
LEAN CLAY (CL), trace sand, pale brown, very stiff, trace rootlets to about 5 ft.
Boring Terminated at 25 Feet
3.0
25.0
1259.5+/-
1237.5+/-
Ground surface elevation estimated from Douglas County GIStopographic data (1-foot elevation contours).
Hammer Type: AutomaticStratification lines are approximate. In-situ, the transition may be gradual.
TH
IS B
OR
ING
LO
G IS
NO
T V
ALI
D IF
SE
PA
RA
TE
D F
RO
M O
RIG
INA
L R
EP
OR
T.
GE
O S
MA
RT
LO
G-N
O W
ELL
051
951
13 M
CD
ON
ALD
S R
ES
TA
U.G
PJ
TE
RR
AC
ON
_DA
TA
TE
MP
LAT
E.G
DT
9/3
0/1
9
WA
TE
R L
EV
EL
OB
SE
RV
AT
ION
S
DE
PT
H (
Ft.)
5
10
15
20
25
LAB
OR
AT
OR
YH
P (
psf)
WA
TE
RC
ON
TE
NT
(%
)
DR
Y U
NIT
WE
IGH
T (
pcf)
ATTERBERGLIMITS
LL-PL-PI
LOCATION See Exploration Plan
Latitude: 41.2735° Longitude: -96.2352°
GR
AP
HIC
LO
G
MO
DE
L LA
YE
R
DEPTH ELEVATION (Ft.)
Approximate Surface Elev.: 1262.5 (Ft.) +/-
Page 1 of 1
Advancement Method:Hollow Stem Auger
Abandonment Method:Boring backfilled with auger cuttings upon completion.
Notes:
Project No.: 05195113
Drill Rig: 735
BORING LOG NO. B-1McDonald's USA, LLCCLIENT:Denver, CO
Driller: C.Ramirez
Boring Completed: 09-13-2019
PROJECT: McDonald's Restaurant #0260238
See Exploration and Testing Procedures for adescription of field and laboratory proceduresused and additional data (If any).
See Supporting Information for explanation ofsymbols and abbreviations.
North 204th Street & North Main Street Omaha, NESITE:
Boring Started: 09-13-2019
15080 A CirOmaha, NE
Not encountered while drilling
WATER LEVEL OBSERVATIONS
1
2
SA
MP
LE T
YP
E
9000+(HP)
9000+(HP)
5000(HP)
8000(HP)
6500(HP)
7000(HP)
7000(HP)
11
12
10
9
11
13
14
106
100
87
99
84
95
99
36-21-15
Grass, root zone at surfaceFILL - LEAN CLAY , trace sand, olive brown, trace rootlets to about 3 ft.
becoming light brown below about 3 ft.
LEAN CLAY (CL), trace sand, pale brown, very stiff
Boring Terminated at 25 Feet
5.0
25.0
1258+/-
1238+/-
Ground surface elevation estimated from Douglas County GIStopographic data (1-foot elevation contours).
Hammer Type: AutomaticStratification lines are approximate. In-situ, the transition may be gradual.
TH
IS B
OR
ING
LO
G IS
NO
T V
ALI
D IF
SE
PA
RA
TE
D F
RO
M O
RIG
INA
L R
EP
OR
T.
GE
O S
MA
RT
LO
G-N
O W
ELL
051
951
13 M
CD
ON
ALD
S R
ES
TA
U.G
PJ
TE
RR
AC
ON
_DA
TA
TE
MP
LAT
E.G
DT
9/3
0/1
9
WA
TE
R L
EV
EL
OB
SE
RV
AT
ION
S
DE
PT
H (
Ft.)
5
10
15
20
25
LAB
OR
AT
OR
YH
P (
psf)
WA
TE
RC
ON
TE
NT
(%
)
DR
Y U
NIT
WE
IGH
T (
pcf)
ATTERBERGLIMITS
LL-PL-PI
LOCATION See Exploration Plan
Latitude: 41.2733° Longitude: -96.235°
GR
AP
HIC
LO
G
MO
DE
L LA
YE
R
DEPTH ELEVATION (Ft.)
Approximate Surface Elev.: 1263.0 (Ft.) +/-
Page 1 of 1
Advancement Method:Hollow Stem Auger
Abandonment Method:Boring backfilled with auger cuttings upon completion.
Notes:
Project No.: 05195113
Drill Rig: 735
BORING LOG NO. B-2McDonald's USA, LLCCLIENT:Denver, CO
Driller: C.Ramirez
Boring Completed: 09-13-2019
PROJECT: McDonald's Restaurant #0260238
See Exploration and Testing Procedures for adescription of field and laboratory proceduresused and additional data (If any).
See Supporting Information for explanation ofsymbols and abbreviations.
North 204th Street & North Main Street Omaha, NESITE:
Boring Started: 09-13-2019
15080 A CirOmaha, NE
Not encountered while drilling
WATER LEVEL OBSERVATIONS
1
2
SA
MP
LE T
YP
E
9000+(HP)
9000+(HP)
9000+(HP)
6000(HP)
3500(HP)
12
13
16
17
17
104
96
107
82
82
Grass, root zone at surfaceFILL - LEAN CLAY , trace sand, olive brown, trace rootlets, blocky to about 3 ft.
pale brown, silty near 4 ft.
LEAN CLAY (CL), trace sand, pale brown, stiff to very stiff
Boring Terminated at 15 Feet
7.5
15.0
1253.5+/-
1246+/-
Ground surface elevation estimated from Douglas County GIStopographic data (1-foot elevation contours).
Hammer Type: AutomaticStratification lines are approximate. In-situ, the transition may be gradual.
TH
IS B
OR
ING
LO
G IS
NO
T V
ALI
D IF
SE
PA
RA
TE
D F
RO
M O
RIG
INA
L R
EP
OR
T.
GE
O S
MA
RT
LO
G-N
O W
ELL
051
951
13 M
CD
ON
ALD
S R
ES
TA
U.G
PJ
TE
RR
AC
ON
_DA
TA
TE
MP
LAT
E.G
DT
9/3
0/1
9
WA
TE
R L
EV
EL
OB
SE
RV
AT
ION
S
DE
PT
H (
Ft.)
5
10
15
LAB
OR
AT
OR
YH
P (
psf)
WA
TE
RC
ON
TE
NT
(%
)
DR
Y U
NIT
WE
IGH
T (
pcf)
ATTERBERGLIMITS
LL-PL-PI
LOCATION See Exploration Plan
Latitude: 41.2736° Longitude: -96.235°
GR
AP
HIC
LO
G
MO
DE
L LA
YE
R
DEPTH ELEVATION (Ft.)
Approximate Surface Elev.: 1261.0 (Ft.) +/-
Page 1 of 1
Advancement Method:Power Auger
Abandonment Method:Boring backfilled with auger cuttings upon completion.
Notes:
Project No.: 05195113
Drill Rig: 735
BORING LOG NO. B-3McDonald's USA, LLCCLIENT:Denver, CO
Driller: C.Ramirez
Boring Completed: 09-13-2019
PROJECT: McDonald's Restaurant #0260238
See Exploration and Testing Procedures for adescription of field and laboratory proceduresused and additional data (If any).
See Supporting Information for explanation ofsymbols and abbreviations.
North 204th Street & North Main Street Omaha, NESITE:
Boring Started: 09-13-2019
15080 A CirOmaha, NE
Not encountered while drilling
WATER LEVEL OBSERVATIONS
1
2
SA
MP
LE T
YP
E
3500(HP)
5000(HP)
5500(HP)
8000(HP)
15
16
13
13
86
88
89
82
Grass, root zone at surfaceLEAN CLAY (CL), trace sand, light brown, stiff, trace rootlets
LEAN CLAY (CL), trace sand, pale brown, stiff to very stiff
Boring Terminated at 10 Feet
3.0
10.0
1260+/-
1253+/-
Ground surface elevation estimated from Douglas County GIStopographic data (1-foot elevation contours).
Hammer Type: AutomaticStratification lines are approximate. In-situ, the transition may be gradual.
TH
IS B
OR
ING
LO
G IS
NO
T V
ALI
D IF
SE
PA
RA
TE
D F
RO
M O
RIG
INA
L R
EP
OR
T.
GE
O S
MA
RT
LO
G-N
O W
ELL
051
951
13 M
CD
ON
ALD
S R
ES
TA
U.G
PJ
TE
RR
AC
ON
_DA
TA
TE
MP
LAT
E.G
DT
9/3
0/1
9
WA
TE
R L
EV
EL
OB
SE
RV
AT
ION
S
DE
PT
H (
Ft.)
5
10
LAB
OR
AT
OR
YH
P (
psf)
WA
TE
RC
ON
TE
NT
(%
)
DR
Y U
NIT
WE
IGH
T (
pcf)
ATTERBERGLIMITS
LL-PL-PI
LOCATION See Exploration Plan
Latitude: 41.2736° Longitude: -96.2358°
GR
AP
HIC
LO
G
MO
DE
L LA
YE
R
DEPTH ELEVATION (Ft.)
Approximate Surface Elev.: 1263.0 (Ft.) +/-
Page 1 of 1
Advancement Method:Power Auger
Abandonment Method:Boring backfilled with auger cuttings upon completion.
Notes:
Project No.: 05195113
Drill Rig: 735
BORING LOG NO. B-4McDonald's USA, LLCCLIENT:Denver, CO
Driller: C.Ramirez
Boring Completed: 09-13-2019
PROJECT: McDonald's Restaurant #0260238
See Exploration and Testing Procedures for adescription of field and laboratory proceduresused and additional data (If any).
See Supporting Information for explanation ofsymbols and abbreviations.
North 204th Street & North Main Street Omaha, NESITE:
Boring Started: 09-13-2019
15080 A CirOmaha, NE
Not encountered while drilling
WATER LEVEL OBSERVATIONS
2
SA
MP
LE T
YP
E
4000(HP)
9000+(HP)
7500(HP)
8000(HP)
19
16
17
15
86
95
97
97
Grass, root zone at surfaceLEAN CLAY (CL), trace sand, brown, stiff, trace rootlets
LEAN CLAY (CL), trace sand, pale brown, very stiff
Boring Terminated at 10 Feet
3.0
10.0
1262+/-
1255+/-
Ground surface elevation estimated from Douglas County GIStopographic data (1-foot elevation contours).
Hammer Type: AutomaticStratification lines are approximate. In-situ, the transition may be gradual.
TH
IS B
OR
ING
LO
G IS
NO
T V
ALI
D IF
SE
PA
RA
TE
D F
RO
M O
RIG
INA
L R
EP
OR
T.
GE
O S
MA
RT
LO
G-N
O W
ELL
051
951
13 M
CD
ON
ALD
S R
ES
TA
U.G
PJ
TE
RR
AC
ON
_DA
TA
TE
MP
LAT
E.G
DT
9/3
0/1
9
WA
TE
R L
EV
EL
OB
SE
RV
AT
ION
S
DE
PT
H (
Ft.)
5
10
LAB
OR
AT
OR
YH
P (
psf)
WA
TE
RC
ON
TE
NT
(%
)
DR
Y U
NIT
WE
IGH
T (
pcf)
ATTERBERGLIMITS
LL-PL-PI
LOCATION See Exploration Plan
Latitude: 41.2733° Longitude: -96.2355°
GR
AP
HIC
LO
G
MO
DE
L LA
YE
R
DEPTH ELEVATION (Ft.)
Approximate Surface Elev.: 1265.0 (Ft.) +/-
Page 1 of 1
Advancement Method:Power Auger
Abandonment Method:Boring backfilled with auger cuttings upon completion.
Notes:
Project No.: 05195113
Drill Rig: 735
BORING LOG NO. B-5McDonald's USA, LLCCLIENT:Denver, CO
Driller: C.Ramirez
Boring Completed: 09-13-2019
PROJECT: McDonald's Restaurant #0260238
See Exploration and Testing Procedures for adescription of field and laboratory proceduresused and additional data (If any).
See Supporting Information for explanation ofsymbols and abbreviations.
North 204th Street & North Main Street Omaha, NESITE:
Boring Started: 09-13-2019
15080 A CirOmaha, NE
Not encountered while drilling
WATER LEVEL OBSERVATIONS
2
SA
MP
LE T
YP
E
7000(HP)
9000+(HP)
9000+(HP)
8000(HP)
10
9
9
9
80
96
95
105
Grass, root zone at surfaceLEAN CLAY (CL), trace sand, pale brown, very stiff, trace rootlets to about 3 ft.
Boring Terminated at 10 Feet10.0 1253.5+/-
Ground surface elevation estimated from Douglas County GIStopographic data (1-foot elevation contours).
Hammer Type: AutomaticStratification lines are approximate. In-situ, the transition may be gradual.
TH
IS B
OR
ING
LO
G IS
NO
T V
ALI
D IF
SE
PA
RA
TE
D F
RO
M O
RIG
INA
L R
EP
OR
T.
GE
O S
MA
RT
LO
G-N
O W
ELL
051
951
13 M
CD
ON
ALD
S R
ES
TA
U.G
PJ
TE
RR
AC
ON
_DA
TA
TE
MP
LAT
E.G
DT
9/3
0/1
9
WA
TE
R L
EV
EL
OB
SE
RV
AT
ION
S
DE
PT
H (
Ft.)
5
10
LAB
OR
AT
OR
YH
P (
psf)
WA
TE
RC
ON
TE
NT
(%
)
DR
Y U
NIT
WE
IGH
T (
pcf)
ATTERBERGLIMITS
LL-PL-PI
LOCATION See Exploration Plan
Latitude: 41.2732° Longitude: -96.2358°
GR
AP
HIC
LO
G
MO
DE
L LA
YE
R
DEPTH ELEVATION (Ft.)
Approximate Surface Elev.: 1263.5 (Ft.) +/-
Page 1 of 1
Advancement Method:Power Auger
Abandonment Method:Boring backfilled with auger cuttings upon completion.
Notes:
Project No.: 05195113
Drill Rig: 735
BORING LOG NO. B-6McDonald's USA, LLCCLIENT:Denver, CO
Driller: C.Ramirez
Boring Completed: 09-13-2019
PROJECT: McDonald's Restaurant #0260238
See Exploration and Testing Procedures for adescription of field and laboratory proceduresused and additional data (If any).
See Supporting Information for explanation ofsymbols and abbreviations.
North 204th Street & North Main Street Omaha, NESITE:
Boring Started: 09-13-2019
15080 A CirOmaha, NE
Not encountered while drilling
WATER LEVEL OBSERVATIONS
2
SA
MP
LE T
YP
E
9000+(HP)
9000+(HP)
8000(HP)
5000(HP)
13
12
12
12
80
87
84
75
Grass, root zone at surfaceLEAN CLAY (CL), trace sand, pale brown, very stiff, trace rootlets to about 3 ft.
Boring Terminated at 10 Feet10.0 1255+/-
Ground surface elevation estimated from Douglas County GIStopographic data (1-foot elevation contours).
Hammer Type: AutomaticStratification lines are approximate. In-situ, the transition may be gradual.
TH
IS B
OR
ING
LO
G IS
NO
T V
ALI
D IF
SE
PA
RA
TE
D F
RO
M O
RIG
INA
L R
EP
OR
T.
GE
O S
MA
RT
LO
G-N
O W
ELL
051
951
13 M
CD
ON
ALD
S R
ES
TA
U.G
PJ
TE
RR
AC
ON
_DA
TA
TE
MP
LAT
E.G
DT
9/3
0/1
9
WA
TE
R L
EV
EL
OB
SE
RV
AT
ION
S
DE
PT
H (
Ft.)
5
10
LAB
OR
AT
OR
YH
P (
psf)
WA
TE
RC
ON
TE
NT
(%
)
DR
Y U
NIT
WE
IGH
T (
pcf)
ATTERBERGLIMITS
LL-PL-PI
LOCATION See Exploration Plan
Latitude: 41.2731° Longitude: -96.2352°
GR
AP
HIC
LO
G
MO
DE
L LA
YE
R
DEPTH ELEVATION (Ft.)
Approximate Surface Elev.: 1265.0 (Ft.) +/-
Page 1 of 1
Advancement Method:Power Auger
Abandonment Method:Boring backfilled with auger cuttings upon completion.
Notes:
Project No.: 05195113
Drill Rig: 735
BORING LOG NO. B-7McDonald's USA, LLCCLIENT:Denver, CO
Driller: C.Ramirez
Boring Completed: 09-13-2019
PROJECT: McDonald's Restaurant #0260238
See Exploration and Testing Procedures for adescription of field and laboratory proceduresused and additional data (If any).
See Supporting Information for explanation ofsymbols and abbreviations.
North 204th Street & North Main Street Omaha, NESITE:
Layering shown on this figure has been developed by the geotechnicalengineer for purposes of modeling the subsurface conditions asrequired for the subsequent geotechnical engineering for this project.Numbers adjacent to soil column indicate depth below ground surface.
NOTES:
B-1B-2
B-3
B-4
B-5
B-6
B-7
GEOMODEL
This is not a cross section. This is intended to display the Geotechnical Model only. See individual logs for more information.
LEGEND
Lean Clay
Silty Clay
Model Layer General DescriptionLayer Name
Lean Clay1
Lean Clay; stiff to very stiff2
Existing Clay Fill
Native Loess
3
25
1
2
5
25
1
2
7.5
15
1
2
10
2
10
2
10
2
10
2
Responsive ■ Resourceful ■ Reliable
SUPPORTING INFORMATION
Contents:
General Notes
Unified Soil Classification System
McDonald's Restaurant #0260238 Omaha, NE
Terracon Project No. 05195113
500 to 1,000
> 8,000
4,000 to 8,000
2,000 to 4,000
1,000 to 2,000
less than 500
Unconfined Compressive StrengthQu, (psf)
ShelbyTube
Soil classification is based on the Unified Soil Classification System. Coarse Grained Soils have more than 50% of theirdry weight retained on a #200 sieve; their principal descriptors are: boulders, cobbles, gravel or sand. Fine Grained Soilshave less than 50% of their dry weight retained on a #200 sieve; they are principally described as clays if they are plastic,and silts if they are slightly plastic or non-plastic. Major constituents may be added as modifiers and minor constituentsmay be added according to the relative proportions based on grain size. In addition to gradation, coarse-grained soils aredefined on the basis of their in-place relative density and fine-grained soils on the basis of their consistency.
GRAIN SIZE TERMINOLOGY
RELATIVE PROPORTIONS OF FINESRELATIVE PROPORTIONS OF SAND AND GRAVEL
DESCRIPTIVE SOIL CLASSIFICATION
LOCATION AND ELEVATION NOTES
SAMPLING WATER LEVEL FIELD TESTSN
(HP)
(T)
(DCP)
UC
(PID)
(OVA)
Standard Penetration TestResistance (Blows/Ft.)
Hand Penetrometer
Torvane
Dynamic Cone Penetrometer
Unconfined CompressiveStrength
Photo-Ionization Detector
Organic Vapor Analyzer
Medium
0Over 12 in. (300 mm)
>12
5-12
<5
Percent ofDry Weight
TermMajor Component of Sample
Modifier
With
Trace
Descriptive Term(s) ofother constituents
>30Modifier
<15
Percent ofDry Weight
Descriptive Term(s) ofother constituents
With 15-29
High
Trace
PLASTICITY DESCRIPTION
Water levels indicated on the soil boring logs arethe levels measured in the borehole at the timesindicated. Groundwater level variations will occurover time. In low permeability soils, accuratedetermination of groundwater levels is notpossible with short term water levelobservations.
DESCRIPTION OF SYMBOLS AND ABBREVIATIONSGENERAL NOTES
> 30
11 - 30
1 - 10Low
Non-plastic
Plasticity Index
#4 to #200 sieve (4.75mm to 0.075mm
Boulders
12 in. to 3 in. (300mm to 75mm)Cobbles
3 in. to #4 sieve (75mm to 4.75 mm)Gravel
Sand
Passing #200 sieve (0.075mm)Silt or Clay
Particle Size
Water Level Aftera Specified Period of Time
Water Level After aSpecified Period of Time
Water InitiallyEncountered
Unless otherwise noted, Latitude and Longitude are approximately determined using a hand-held GPS device. Theaccuracy of such devices is variable. Surface elevation data annotated with +/- indicates that no actual topographicalsurvey was conducted to confirm the surface elevation. Instead, the surface elevation was approximately determined fromtopographic maps of the area.
Standard Penetration orN-Value
Blows/Ft.
Descriptive Term(Density)
CONSISTENCY OF FINE-GRAINED SOILS
Hard
15 - 30Very Stiff> 50Very Dense
8 - 15Stiff30 - 50Dense
4 - 8Medium Stiff10 - 29Medium Dense
2 - 4Soft4 - 9Loose
0 - 1Very Soft0 - 3Very Loose
(50% or more passing the No. 200 sieve.)Consistency determined by laboratory shear strength testing, field visual-manual
procedures or standard penetration resistance
STRENGTH TERMS
> 30
Descriptive Term(Consistency)
Standard Penetration orN-Value
Blows/Ft.
RELATIVE DENSITY OF COARSE-GRAINED SOILS
(More than 50% retained on No. 200 sieve.)Density determined by Standard Penetration Resistance
UNIFIED SOIL CLASSIFICATION SYSTEM
Criteria for Assigning Group Symbols and Group Names Using Laboratory Tests A
Soil Classification
Group
Symbol Group Name B
Coarse Grained Soils:
More than 50% retained
on No. 200 sieve
Gravels:
More than 50% of
coarse fraction retained
on No. 4 sieve
Clean Gravels:
Less than 5% fines C
Cu 4 and 1 Cc 3 E GW Well-graded gravel F
Cu 4 and/or 1 Cc 3 E GP Poorly graded gravel F
Gravels with Fines:
More than 12% fines C
Fines classify as ML or MH GM Silty gravel F,G,H
Fines classify as CL or CH GC Clayey gravel F,G,H
Sands:
50% or more of coarse
fraction passes No. 4
sieve
Clean Sands:
Less than 5% fines D
Cu 6 and 1 Cc 3 E SW Well-graded sand I
Cu 6 and/or 1 Cc 3 E SP Poorly graded sand I
Sands with Fines:
More than 12% fines D
Fines classify as ML or MH SM Silty sand G,H,I
Fines classify as CL or CH SC Clayey sand G,H,I
Fine-Grained Soils:
50% or more passes the
No. 200 sieve
Silts and Clays:
Liquid limit less than 50
Inorganic: PI 7 and plots on or above “A” line J CL Lean clay K,L,M
PI 4 or plots below “A” line J ML Silt K,L,M
Organic: Liquid limit - oven dried
0.75 OL Organic clay K,L,M,N
Liquid limit - not dried Organic silt K,L,M,O
Silts and Clays:
Liquid limit 50 or more
Inorganic: PI plots on or above “A” line CH Fat clay K,L,M
PI plots below “A” line MH Elastic Silt K,L,M
Organic: Liquid limit - oven dried
0.75 OH Organic clay K,L,M,P
Liquid limit - not dried Organic silt K,L,M,Q
Highly organic soils: Primarily organic matter, dark in color, and organic odor PT Peat
A Based on the material passing the 3-inch (75-mm) sieve B If field sample contained cobbles or boulders, or both, add “with cobbles
or boulders, or both” to group name. C Gravels with 5 to 12% fines require dual symbols: GW-GM well-graded
gravel with silt, GW-GC well-graded gravel with clay, GP-GM poorly
graded gravel with silt, GP-GC poorly graded gravel with clay. D Sands with 5 to 12% fines require dual symbols: SW-SM well-graded
sand with silt, SW-SC well-graded sand with clay, SP-SM poorly graded
sand with silt, SP-SC poorly graded sand with clay
E Cu = D60/D10 Cc =
6010
2
30
DxD
)(D
F If soil contains 15% sand, add “with sand” to group name. G If fines classify as CL-ML, use dual symbol GC-GM, or SC-SM.
H If fines are organic, add “with organic fines” to group name. I If soil contains 15% gravel, add “with gravel” to group name. J If Atterberg limits plot in shaded area, soil is a CL-ML, silty clay. K If soil contains 15 to 29% plus No. 200, add “with sand” or “with gravel,”
whichever is predominant. L If soil contains 30% plus No. 200 predominantly sand, add “sandy” to
group name. M If soil contains 30% plus No. 200, predominantly gravel, add
“gravelly” to group name. N PI 4 and plots on or above “A” line. O PI 4 or plots below “A” line. P PI plots on or above “A” line. Q PI plots below “A” line.