March 6, 2008 08-042.ROl N-J Excavating R.R. 2 Moorefield

CMT Engineering Inc.
CONSULTING
ENGINEERS
1011 Industrial Crescent, Unit I
P.O. Box 159
SI. Clements, Ontario NOB 2MO
Te/: 519-699-5775
Fax: 519-699-4664
www.cmtinc.net
March 6, 2008
08-042.ROl
N -J Excavating
R.R. 2
Moorefield, Ontario
NOG2KO
I
Dear James:
Re:
Geotechnical Investigation
Sandy Hills Drive
Townshin. of Wo olwi eh
The services of CMT Engineering Inc. (CMT Inc.) were retained by N-J Excavating to carry out
a geotechnical investigation on Sandy Hills Drive in the Township of Wo olwi eh.
It is understood that N -J Excavating is proposing to begin exporting sand and gravel from the
existing pit located at 777 Sandy Hills Drive in the Township of Woolwich. A requirement of
the Township of Woolwich was to investigate the existing road structure and determine the
thickness of the granular base/subbase.
Prior to conducting the geotechnical investigation; locates were undertaken under the supervision
ofN-J Excavating to ensure that existing utilities would not be damaged.
Three (3) boreholes were advanced utilizing a Geoprobe 6620DT drillrig operated by CMT
Engineering Inc. Please refer to the attached borehole location plan for the locations of the
boreholes.
Boreholes 1 and 3 were advanced west of the existing driveway into the pit. The stratigraphy in
Borehole 1 comprised approximately 0.3 m (12") of Granular 'A' overlying native sand with
some gravel. Borehole 3 comprised approximately 0.15 m (6") of Granular 'A' overlying native
sand with some gravel. Sand and gravel was encountered at a depth of 1.8 m in Borehole 3. The
free-draining nature of native sand with some gravel, combined with the 0.15 to 0.30 m (6" to
12") of Granular 'A', should provide a satisfactory base to accommodate the anticipated truck
traffic in the area of Boreholes 1 and 3. Regular maintenance (grading) will be required to
maintain a suitable driving surface.
C.MT Engineering Inc.
March 6, 2008
Page 2
08-042.ROI
Borehole 2 was advanced on the hill to the east of the existing driveway into the pit area. The
stratigraphy in Borehole 2 comprised approximately 0.15 m (6") of Granular 'A' overlying
0.35 m (14") of sand and gravel. Underlying the sand and gravel was a 50 mm (2") thick layer of
topsoil, then native silty sand. The silty sand was in a wet state (moisture content of 16.5%).
Sand and gravel was encountered at a depth of 1.8 m in Borehole 2. It is presumed that the
topsoil layer has been compressed by the surface granulars and vehicle traffic. The presence of
topsoil can reduce the drainage characteristics of the road. Between the presence of topsoil, the
reduced drainage and the underlying silty sand in a wet state, it would be anticipated that frost
heaving and frost boils would be experienced in this area during the winter and spring
conditions.
It should be noted that frozen conditions were encountered to depth of approximately 0.6 m
(2.0 ft) in all three boreholes. The frozen conditions make it difficult to accurately discern
between the Granular 'A' base and the underlying soils.
We trust this information meets with your present requirements.
please do not hesitate to contact our office.
trul~
Ill-..
-- IflLJ
ks
Enclosure - Borehole Logs/Location Plan
Should you have any questions,
Page 1 of 1
BOREHOLE 1
Date Drilled: March 3, 2008
Rig: Geoprobe 6620DT
Contractor:
CMT Engineering
Drilling Method: MC5
Project No.: 08-042
Project: Sandyhills Drive
Inc.
Elevation: Logged by: D.B.
Location:
Township of Wo olwi ch
•...
Pocket Penetrometer
•
kPa
•
100
300
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Ground Surface (m)
Oft ~
FILL
Dense, moist, brown, sand and
gravel, frozen (Gran "A")
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1-
Well
Installation
SOIL DESCRIPTION
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.0
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SAND
Dense, moist, brown sand,
some gravel, frozen to 0.6m
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0.30
2.5 ;
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CS
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Moisture Content %
SPT (N)
• Blows/0.3 m •
Wp [----X----] WI
10 20 30
40
10
30 50 70 90
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End of Borehole
-2.40
2.40
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Borehole open upon completion
9CMT ENGINEERING
INC.
1011 Industrial Crescent. Unit 1
SI. Clements. Ontario
NOB 2MO
phone 519.Q99-S775
fax 519.Q99-4664
www.cmtinc.net
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Page 1 of 1
BOREHOLE 2
Project No.: 08-042
Project: Sandyhills Drive
Date Drilled: March 3, 2008
Rig: Geoprobe 6620DT
Contractor:
CMT Engineering
Drilling Method: MC5
Inc.
Elevation: -Logged by: O.B.
Location:
Township of Woolwich
Pocket Penetrometer
•
kPa
•
300
___ 100
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Well
Installation
SOIL DESCRIPTION
(Jl
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Cl) 0::: Cl)
SPT (N)
Moisture Content %
Wp [----X----] WI
• Blows/0.3 m 10 30 50 70 90
10 20 30 40
>Cl)
.. J..
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1. .._
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TOPSOIL
Moist, dark brown, sandy
topsoil (50mm)
':';1'':-'','
1
.rrt
3-
0.50
16.5
SIL TY SAND
Compact, wet, rust-brown, silty
sand, frozen to 0.6m
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- SAND AND GRA- -VeL
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1.80
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End of Borehole
.2.40
Borehole open and dry upon
completion
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CMT ENGINEERING
·..·..···..·..·······1··..·
INC.
1011 Industrial Crescent, Unit 1
SI. Clements, Ontario
NOB 2MO
phone 519-699-5775
tax 519-699-4664
www.cmtinc.net
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Page 1 of 1
BOREHOLE 3
Date Drilled:
March 3, 2008
Project No.: 08-042
Project: Sandyhills Drive
Rig: Geoprobe 6620DT
Contractor:
CMT Engineering
Drilling Method: MC5
Inc.
Elevation: -Logged by: D.B.
Location:
Township of Woolwich
•...
Pocket Penetrometer
•
kPa
•
100
300
Q)
"'"'
.0
~ E
::J
2:- z
a. > a.
Q)
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0-
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Well
Installation
SOIL DESCRIPTION
Cl)
(5
Q)
Cl)
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Q)
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ti
--'------
... _
Ground Surface (m)
oft mo
FILL
'x
Dense, saturated, brown, sand
and gravel, frozen (Gran "A")
1-
I.
I_-
i
Moisture Content %
SPT (N)
Wp [----X----] WI
• Blows/0.3 m 10 20 30 40
10 30 50 70 90
1
1
.1.
.•1.._._
1.__
....1..._._.I.L
.....I_...,..,l._.J__ L .."t_.1
.:
0.00
0.00-
6.1
-0.15
0.15
SAND
Compact to dense, moist,
sand, some gravel, frozen to
0.6m
1-
CS
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dense damp brown sand and
~/ii·; gravel
:
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2.8
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8-
End of Borehole
-2.40
2.40
Borehole open and dry upon
completion
9CMT ENGINEERING
INC.
1011 Industrial Crescent, Unit 1
SI. Clements, Ontario
NOB 2MO
phone 519-699-5775
lax 519-699-4664
.WWW.cmtinc.net
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NO.
DATE
REVISION
CMT ENGINEERING INC.
1011 Industrial Crescent, Unit 1
St. Clements, Ontario NOB 2MO
Tel.: 519-699-5775
Fax: 519-699-4664
www.cmtinc.net
PLAN VIEW SHOWING
BOREHOLE LOCATIONS
Sandy Hills Drive
Twp. of Woolwich
Project:
Date:
Scale:
08-042
Feb. 2008
N.T.S.
Drawing:
1
Sheet:
I