HomeMy WebLinkAboutLong Acres Phase II - Supplemental Site ExplorationTERRA ASSOCIATES, Inc.
Consultants in Geotechnical Engineering, Geology
and
Environmental Earth Sciences
August 31, 2015
Project No. T-7159-1
Mr. Joel Wage
Ryan Companies
3900 East Camelback Road, Suite 100
Phoenix, Arizona 85018
Subject: Supplemental Site Exploration
Long Acres Phase II
SW 27th Avenue and Naches Avenue SW
Renton, Washington
Reference: Geotechnical Report, Long Acres Phase Il, SW 27th Avenue and Naches Avenue SW,
Renton, Washington, Project No. T-7159-1, prepared by Terra Associates, Inc.,
dated August 18, 2015
Dear Mr. Wage:
As request, we have performed additional site exploration at the Long Acres Phase H project in Renton,
Washington. On August 20, 2015, we observed the soil and groundwater conditions at 6 soil test borings drilled
to depths of 60 feet below current site grades. Four test borings were located in the footprint of the revised west
building location with two additional test borings located in the east building area. The locations of the test
borings in relation to the previously performed field work are shown on the attached Figure 1.
The test borings were advanced using mud rotary drilling methods. Soil samples were obtained at five-foot
intervals in general accordance with American Society. for Testing and Materials (ASTM) Test Designation D-
1586. Using this procedure, a 2 -inch (outside diameter) split barrel sampler is driven into the ground 18 inches
using a 140 -pound hammer free falling a height of 30 inches. The number of blows required to drive the sampler
12 inches after an initial 6 -inch set is referred to as the Standard Penetration Resistance value or N value. This is
an index related to the consistency of cohesive soils and relative density of cohesionless materials. N values
obtained for each sampling interval are recorded on the boring logs. All soil samples were visually classified in
accordance with the Unified Soil Classification System (USCS) described on the attached Figure 2. The boring
logs are presented as Figures 3 through 8. Laboratory testing completed on soil samples obtained included
determination of the soils in place moisture content. Results of the laboratory moisture contents for the soil
samples are shown on the boring logs opposite the samples on which they were performed.
12220 113th Avenue NE, Ste. 130, Kirkland, Washington 98034
Phone (425) 821-7777 • Fax (425) 821-4334
Mr. Joel Wage
August 31, 2015
The soil conditions observed in the test borings are generally consistent with the previous cone penetration tests
(CPTs) data and test pit excavations completed for the referenced geotechnical engineering report. These consist
of very loose and soft silty sand and silt alluvium to a depth of about 23 feet followed by medium dense to
occasionally dense dark gray to black sand alluvium to boring completion. Evidence of groundwater was
observed at depths of 5 to I 1 feet below current surface grades during drilling.
The supplemental soils data obtained at the test borings by SPT sampling is generally consistent with that
indicated by the CPT data. Liquefaction analysis based on the SPT data indicates the alluvium would be subject
to the liquefaction phenomenon during a design level earthquake. Site impacts should liquefaction occur would
be in the form of building settlement with maximum settlement approaching four inches, similar to that indicated
by the analysis using the CPT data and discussed in the referenced report.
Based on the results of the supplemental test boring data, we are amending our recommendations for supporting
the buildings on augercast piles. Augercast piles, if used, should be advanced to obtain support in the medium
dense sand alluvium indicated to be present at depths of 30 to 35 feet below current site grades by the recent test
borings. Pile capacity, both vertical compressive and uplift values as well as lateral values outlined in the
referenced report would remain the same.
With the exception of the recommendations for augercast pile depth as amended above, all other geotechnical
recommendations for design and construction as outlined in the referenced report continue to remain valid.
We trust the supplemental information presented is sufficient for your current needs. If you have any questions or
require additional information, please call.
Sincerely yours,
TERRA ASSOCIATES, INC.
Carol
IF -31-J6-
1'h I. �,cheppr, Y. P� •
Enclosed: Figr W — Exploration Location Plan
Figure 2 — Unified Soil Classification System
Figures 3 through 8 — Boring Logs
Project No. T-7159-1
Page No. ii
NOTE: LEGEND:
THIS SITE PLAN IS SCHEMATIC. ALL LOCATIONS AND APPROXIMATE TEST PIT LOCATION
DIMENSIONS ARE APPROXIMATE. IT IS INTENDED FOR ®APPROXIMATE CONE PENETRATION TEST LOCATION
REFERENCE ONLY AND SHOULD NOT BE USED FOR
DESIGN OR CONSTRUCTION PURPOSES. & APPROXIMATE BORING LOCATION
REFERENCE: SITE PLAN PROVIDED BY W.H. PACIFIC, AND COLLINS WOERMAN.
400
FEET
MAJOR DIVISIONS
LETTER
TYPICAL DESCRIPTION
SYMBOL
Clean
GW
Well -graded gravels, gravel -sand mixtures, little or no fines.
Gravels (less
`
GRAVELS
than 5%
CO)
More than 50%
fines)
GP
Poorly -graded gravels, gravel -sand mixtures, little or no fines.
2N
of coarse fraction
N
mCn
is larger than No.
GM
Silty gravels, gravel -sand -silt mixtures, non -plastic fines.
a`) >
4 sieve
Gravels with
GC
Clayey gravels, gravel -sand -clay mixtures, plastic fines.
LU M•Vi
fines
o
�o
N
,LO
Clean Sands
SW
Well -graded sands, sands with gravel, little or no fines.
N
o
Z
SANDS
(less than
QM
More
than 50%
5% fines)
SP
Poorly -graded sands, sands with gravel, little or no fines.
o }
of coarse fraction
SM
Silty sands, sand -silt mixtures, non -plastic fines.
v
2
is smaller than
No. 4 sieve
Sands with
SC
Clayey sands, sand -clay mixtures, plastic fines.
fines
(D
ML
Inorganic silts, rock flour, clayey silts with slight plasticity.
J
M a)
(.N
SILTS AND CLAYS
Liquid Limit is less than 50%
CL
Inorganic clays of low to medium plasticity. (Lean clay)
D
m 'Cn
OL
Organic silts and organic clays of low plasticity.
Z
Eo
o 04
MH
Inorganic silts, elastic.
O
L o
Z
SILTS AND CLAYS
w
Z
t C°
Liquid Limit is greater than 50%
CH
Inorganic clays of high plasticity. (Fat clay)
LL
L
N .r
O
OH
Organic clays of high plasticity.
HIGHLY ORGANIC SOILS
PT
Peat.
DEFINITION OF TERMS AND SYMBOLS
N
Standard Penetration
2" OUTSIDE DIAMETER SPILT SPOON SAMPLER
LU
Density Resistance in Blows/Foot
Z
2.4" INSIDE DIAMETER RING SAMPLER OR
O
Very Loose 0-4
SHELBY TUBE SAMPLER
as
Loose 4-10
=
Medium Dense 10-30
= WATER LEVEL (Date)
O
Dense 30-50
V
Very Dense >50
Tr TORVANE READINGS, tsf
Pp PENETROMETER READING, tsf
Standard Penetration
Consistancy Resistance in Blows/Foot
LU
DD DRY DENSITY, pounds per cubic foot
U)
Very Soft 0-2
=
Soft 2-4
LL LIQUID LIMIT, percent
O
Medium Stiff 4-8
V
Stiff 8-16
PI PLASTIC INDEX
Very Stiff 16-32
Hard >32
N STANDARD PENETRATION, blows per foot
Terra
UNIFIED SOIL CLASSIFICATION SYSTEM
LONG ACRES PHASE II
. Associates Inc.
RENTON, WASHINGTON
Consultants in Geotechnical engineering
Geology and
Environmental Earth Sciences
Pro No.T-7159-1
1•
Date AUG 2015
Figure 2
9
LOG OF BORING NO. B-1
Figure No. 3
Project: Long Acres Phase II Project No: T-7159-1 Date Drilled: 8/20/15
Client: Ryan Companies Driller: BORETEC Logged By: AJD
Location: Renton, Washington Approx. Elev: N/A
Pocket Penetrometer
Z
o TSF o
Consistency/
1 2 3 4
Soil Description
Relative Density
a
Moisture Content %
SPT (N)
L
n
E
WP I-----x-----I WI
0 Blows/ft •
o
in
10 30 50 70 90
10 20 30 40
,..... _1
1-
I
i
_
2
FILL: crushed gravel, fine to medium grained,
3_
moist. (GP)
4-
-45.0
45.0
6
5
_ ...__.._......-
6
ne moist.
Gray SILT with sand, figrained,
Medium Stiff
7-
(ML)
8-
9-
9 -
-
46.6 1
10-
Brown grading to gray/black silty SAND, fine
Very Loose
x
= 11-
711 -IF
grained, moist to wet.
12-
13
.._ -....
__ -
14-
-
82.1
4
15-
Gray SILT with sand interbedded with brown
Soft
■
16-
peat, wet. (ML)
17
18
.................................•--...............-•--..--.. _.........
19-
-43.0
81
20-
Loose
*
f
•' r
21
Gray/black poorly graded SAND, fine to
22
medium grained, wet. (SP)
23-
24-
26.7
2B
25--FMedium
Dense
•
6
26-
27
27
i
28-
829
29-
-
31.5
28
30--F31
Medium Dense
32
33
*Continued on Next Page.
34
35
L
Terra
Note: This borehole log has been prepared for geotechnical purposes. This
information pertains only to this boring location and should not be interpeted
1
I Associates, Inc.
as being indicative of other areas of the site.
Consultants in Geotechnical Engineering, Geology
and Environmental Earth Sciences
LOG OF BORING NO. B-1
Figure No. 3
Project: Long Acres Phase II Project No: T-7159-1 Date Drilled: 8/20/15
Client: Ryan Companies _ Driller: BORETEC Logged By: AJD
Location: Renton, Washington Approx. Elev: N/A
m
Pocket Penetrometer
i'_
A TSF o
Consistency/
1 2 3 4
S
Soil Description
Relative Density
-' - ' '
T
Moisture Content %
SPT (N)
s
;?
n
E
Wp I -----x ----- I WI
• Blows/ft •
0
M
10 30 50 70 90
, 1 1 1 A {. J ! ir
10 20 30 40
28.8
36
Medium Dense
x
s
738 37-
38-
39
26.1
--------------------! -------------
82
40-
Dense
------=, ---------------6-----=. ----- -
41-
T
-------- -------- --------- ------- --------
42
43-
44-
27.5
-----T-------------E---------------
26:
45-
Medium Dense
----; •
46
-----
-- -------------------------
47
- ---
48
49
30.1 -------
------------2J ' ........
50-
Medium Dense
= ...... 611.:.. .... ..
51
52-
.. .
53-
-------
-------------------------- -- ----
54-
--------
28.5
'-------- - ------
24
55-
Medium Dense
• --------
56-
57-
-------
58
I
59
-
------
31.3.
; - --
26;
60-
Medium Dense
- ------
' •--;------
61-
-------
------------ ---------------
62
63-
Boring terminated at 61.5 feet.
:.......:.......»..�... _ .......
-
Groundwater observed below 11 feet.
4-
64-
--
---- -------- -------- : -------- --------
65
65 -
----------------
66-
-------
-------------67-
68
69
--------
70-
0-Note:
Note:This borehole log has been prepared for geotechnical purposes This
information pertains only to this boring location and should not be interpeted as
being indicative of other areas of the site.
Terra
Associates, Inc.
Consultants in Geotechnical Engineering,
Geology
LOG OF BORING NO. B-2
Figure No. 4
Project: Long Acres Phase II Project No: T-7159-1 Date Drilled: 8/20/15
Client: Ryan Companies Driller: BORETEC Logged By: AJD
Location: Renton, Washington Approx. Elev: N/A
Pocket Penetrometer
Z
o TSF o
Consistency/
1 2 3 4
Soil Description
Relative Density
Moisture Content %
SPT (N)
w
a
CL
E
Wp I ----- x ----- I WI
Blows/ft •
10 30 50 70 90
10 20 30 40
I
1-
2-
3 3
'
4
3
5-
*No sample.
Soft
•
6
i 1
7-
8-
8-
9
9 _
45.7 1
' s
i 10
Gray SILT with sand, fine grained, wet. (ML)
Very Soft
10
11
i f
12
I I I J.
i E
13-
14-
*From 15 to 16.5 feet soil is interbedded with
£6.8 1
I
15-][15-
brown peat.
Very Soft
16-
617-
17-
18
1819
19-
55.6 1
20-
Very Soft
A 0I
-
21-
1-22-
I
22-
23-
23
...... ........ ............. ......_................. ----•---...... ..................
-........
? I
24-
28A
9
25-
Gray/black poorly graded SAND, fine to
Loose
X
•
26-
medium grained, wet. (SP)
27
28-
29-
*Occasional shell fragments observed below
25.7
26
30-
30 feet.
Medium Dense
•
31-
132-
32-
33
33
34-
*Continued on Next Page.
35-
Medium Dense
Terra
Note: This borehole log has been prepared for geotechnical purposes. This
information pertains only to this boring location and should not be interpeted
'' Associates, Inc.
as being indicative of other areas of the site.
Consultants in Geotechnical Engineering, Geology
and Environmental Earth Sciences
LOG OF BORING NO. B-2
Figure No. 4
Project: Long Acres Phase II Project No: T-7159-1 Date Drilled: 8/20/15
Client:. Ryan Companies Driller: BORETEC Logged By: AJD
Location: Renton, Washington Approx. Elev: N/A
m
Pocket Penetrometer
Z
o TSF A
Consistency/
1 2 3 4
Soil Description
Relative Density
1 1. ' --
Moisture Content %
SPT (N)
E
W x WI
• Blows/ft
o
CU
10 30 50 70 90
10 20 30 40
38.3
21
36-
37
----------------- ----------
-------
-------- -------- ------ -------
39 -
-
32.2
- -----1------- ------
4
40-
Very Loose
. ------
--------
41
41-
-------'
------- ---------------- `- -...
42
--------
43-
44-
28.9
; - -- ---- - ------ ----- -
16
45-1Medium
Dense
-----
= '--------------- ----
46
•-------
------- ------ ---- -------
47
-------
-------- ------------ -- ---
48
49
37.0
-- T -
'. 16
50-
Medium Dense
------
---. --------- -------
51-
_T
52
.................
53
----------------I-------
54
*Trace wood fragments observed.
33.0
2n
55-1Medium
Dense
-----
--------+---- -----------------
56
------
-------_-----_---- ----
-----------------------------------
57
57-
58
59-
31-8
-------- --------
60-
Medium Dense
------' -------
61
_T
62-
63-
Boring terminated at 61.5 feet.
Groundwater seepage observed below 10
64-
feet.
65-
66-
- --- -- .....................
67-
68-
........
................... .
69-1
70-
Note: This borehole log has been prepared for geotechnical purposes This
information pertains only to this boring location and should not be interpeted as
being indicative of other areas of the site.
T
; : Terra
�t Associates, Inc.
Consultants in Geotechnical Engineering,
Geology
LOG OF BORING NO. B-3
Figure No. 5
Project: Long Acres Phase 11 Project No: T-7159-1 Date Drilled: 8/20/15
Client: Ryan Companies _ Driller: BORETEC Logged By: AJD
Location: Renton, Washington Approx. Elev: N/A
Pocket Penetrometer
L TSF o
Consistency/
1 2 3 4
S
Soil Description
Relative Density
m
Moisture Content %
SPT (N)
S
CL
E
Wp I-----x-----I WI
a Blows/ft e
a)
m
10 30 50 70 90
10 20 30 40
2-
3
Brown/gray SILT with sand, fine grained, wet.
(ML) Mottled
j
4
Soft
38.3
2
i 5-
-6-
6-
7-
7-
8-
8
9 -
36.0 1
10-IBrown
silty SAND, fine grained, wet. (SM)
Very Loose
11
12-
13-
--•----.... -..... -........ -......... -... _.._... ..-............... _.._... � ..
14
1
15-
Very Loose
16-
Gray/black poorly graded SAND with silt, fine
17
grained, wet. (SP -SM)
18
19-
-33-2
10
20-
Medium Dense
a
21-
1-
22-
22-
23-
23-
24 -
............
31.8
7
25-T�
a
26-
Loose
27-
Gray/black poorly graded SAND, fine to
28-
medium grained, wet. (SP)
29 -
24.8
30
30-
0-31-
31
Dense
32 -
33-
34
"Continued on Next Page.
35
Terra
Note: This borehole log has been prepared for geotechnical purposes. This
information pertains only to this boring location and should not be interpeted
Associates, Inc.
as being indicative of other areas of the siteon
Consultants in Geotechnical Engineering, Geology
and Environmental Earth Sciences
LOG OF BORING NO. B-3
Figure No. 5
Project: Long Acres Phase II Project No: T-7159-1 Date Drilled: 8/20/15
Client: Ryan Companies Driller: BORETEC Logged 8y: AJD
Location: Renton, Washington Approx. Elev: N/A
Pocket Penetrometer
Z
o TSF o
Consistency/
1 2 3 4
Soil Description
Relative Density
-' t
SPT (N)
Q
Moisture Content %
a
E
Wp I ----- x ----- I WI
• Blows/ft •
o
M
10 30 50 70 90
10 20 30 40
25-8
22
36
Medium Dense
------ -- -♦ - `
37
------- - - -------- ------------------
------ --------38
38-
39-
-
24.4
-- - - +----
2s# ---
40
Medium Dense
------I - ----+--------------
41
--------: --------- ------- --------
42 -
-------
43-
...:...
44
45-
Medium Dense
------------- • - --•----' --•--•-
46-
--------- --------------- -------
------
47-
47-
.... ....... -------- ---------- ------
48
48
49-
33.8
12
50-
Medium Dense
----- • `-------- -
51
-•---
-------- - ---'-------
52-
5253
53-
54-
54-28.7
-28,7
55
Medium Dense
•'
56-
6-
57-
57
58
------- ------
59-
31.5
-------------- --------- ------- --------
25
60-
Medium Dense
----- --------
- -- a -----------------
61
61-
62-----------------
63-Boring
terminated at 61.5 feet.
-----,----------------I---------------
Groundwater seepage observed below 5 feet.
64-
65-
:..... .:.....f.....
66
67
68
69
-
70
Note: This borehole log has been prepared for geotechnical purposes. This
information pertains only to this boring location and should not be interpeted as
being indicative of other areas of the site.
Terra
i. Associates, Inc.
Consultants in Geotechnical Engineering,
Geology
LOG OF BORING NO. B-4
Figure No. 6
Project: Long Acres Phase II Project No: T-7159-1 Date Drilled: 8/20/15
Client: Ryan Companies Driller: BORETEC Logged By: AJD
Location: Renton, Washington Approx. Elev: N/A
Pocket Penetrometer
o TSF o
Consistency/
1 2 3 4
Soil Description
Relative Density
4 - '
aD
Moisture Content % SPT (N)
CL
m
Wp I ----- x ----- I WI • Blows/ft ■
m
10 30 50 70 90 10 20 30 40
1
2
3 _
Gray/brown SILT with sand, fine grained, wet.
Soft
(ML) Mottled
4
37.7 4
i 5-
* •
6
7-
8
.» ..... .......--_....-.----------------------___..._
9-1
39.9 1
10-
Brown silty SAND, fine grained, wet. (SM)
Very Loose
x
11-
12-
13-
. ............. ......................
14-
-31.5
1
15-
Very Loose
x
16-
•
Gray/black poorly graded SAND with silt, fine
17 -
grained, wet. (SP -SM)
18
19-
34.4 2 i
20-
Very Loose
* •
I i
21
22-
223...
23-
. .......
24
-..____________.____....
26-3 12 j j
25
x ■
26
Medium Dense
27
Gray black, poorly graded SAND, fine to
28
medium grained, wet. (SP)
29-
25,1 34
30
31-
:L•
Dense
32-
33-
34-
"Continued on Next Page.
35
Terra
Note: This borehole log has been prepared for geotechnical purposes This
information pertains only to this boring location and should not be interpeted
Associates, Inc.
as being indicative of other areas of the site.
so Consultants in Geotechnical Engineering, Geology
and Environmental Earth Sciences
LOG OF BORING NO. B-4
Figure No. 6
Project: Long Acres Phase II Project No: T-7159-1 Date Drilled: 8/20/15
Client: _Ryan Companies Driller: BORETEC Logged By: AJD
Location: Renton, Washington Approx. Elev: N/A
Pocket Penetrometer
ai
�1 TSF
Consistency/
2 3 4�
9
Soil Description
Relative Density
Moisture Content %
SPT (N)
a
CL
E
Wp I ----- x ----- I WI
• Blows/ft •
10 30 50 70 90
10 20 30 40
22.9
--7-26
36-
Medium Dense
.:
37-
------=--- ---•=. ------ - -------
38
39-
24.5
2g .. ---------
40-
-
"Occasional shell fragments observed below
Medium Dense
! .......
41-
40 feet.
42-
- --- J' --- ----, ......
43-
-------'
-------! ---- --'---------- ---
44-
29-5
18
45-
Medium Dense
■
46-
.
47
-
48
49
34.7
---- 15
50 -][Medium
Dense
----- -w- ------......• •
51
52
.
...........................--.....-....
53
54-
31.5
------------------ -----------------
:23
55-1Medium
Dense
x
-- --- ------ ------------
56-
..................... . ..............
57
58 -
------------ ------ -----' -------
59 -
;38.2
---- -------------- :----;--------
15
60-
Medium Dense
------------s•-;------L------
------
61
62-
_ ........... .......
63
Boring terminated at 61.5 feet.
Groundwater seepage observed below 5 feet.
s
64-
�..:..
..
65-
66-
....... - ...
E
------
68-
-----------------------
69-
------- ---------------'
70-
---' ---
Note: This borehole log has been prepared for geotechnical purposes This
information pertains only to this boring location and should not be interpeted as
being indicative of other areas of the site.
Terra
Associates, Inc.
Consultants in Geotechnical Engineering,
Geology
LOG OF BORING NO. B-5
Figure No. 7
Project: Long Acres Phase II Project No: T-7159-1 Date Drilled: 8/21/15
Client: Ryan Companies Driller: BORETEC Logged By: AJD
Location: Renton, Washington Approx. Elev: N/A
Pocket Penetrometer
o TSF o
Consistency/
1 2 3 4
Soil Description
Relative Density
a
Moisture Content %
SPT (N)
CL
E
Wp I-----x-----I WI
• Blows/ft •
Q
m
10 30 50 70 90
..1.... 1..... 1.. L. I
10 20 30 40
I
'
1
2-
3-
34
4—
_
29.5
7
5—
Gray/brown silty SAND, fine grained, moist.
Loose
•
6 -
(SM) Mottled
7-
8
9 -
35,9
4
7,10
Very Loose
x
• i
11-
12-
13
14
Very Loose
33.7
4
15
x
•
16—
Gray/black poorly graded SAND, fine to
17_
medium grained, wet. (SP)
18-
19—
30.4
11
20—
Medium Dense
•
21-
22-
2-
23-
23-
24
24-
31.3
31.3
14
25—:EMedium
Dense
*
•
26
27-
72829
28-
29-
31.0
31.0
23
30
Medium Dense
•
31
32-
33—
'`Continued on Next Page.
34 —
35—.....
Terra
Note: This borehole log has been prepared for geotechnical purposes. This
information pertains only to this boring location and should not be interpeted
Associates, Inc.
as being indicative of other areas of the site.
Consultants in Geotechnical Engineering. Geology
&I
and Environmental Earth Sciences
LOG OF BORING NO. B-5
Figure No. 7
Project: Long Acres Phase II Project No: T-7159-1 Date Drilled: 8/21/15
Client: Ryan Companies Driller: BORETEC Logged By: AJD
Location: Renton, Washington Approx. Elev: N/A
Pocket Penetrometer
A TSF o
a)
Consistency/
1 2 3 4
Soil Description
Relative Density
n
Moisture Content %
SPT (N)
L
S
E
Wp I -----x ----- I WI
+ Blows/ft a
m
m
10 30 50 70 90
10 20 30 40
-23
26.3
36-
.....
Medium Dense
- - ------ '.
38-
------- -------- ------ --- -
39-
-
20 ------
40
Medium Dense
------4------- -----
41-
*Occasional shell fragments observed below
--------=-------=------
40 feet.
42
......: -... ---------L ---------------
43
----- ---- - --- -
44-
-
37.7
-------; 1----------------- -
5
45-
Loose
--------- -------•--------
46
I:
-T
47
... ...... +�
48
.... r-------
..---4950-
49-
50-
Medium Dense
- •
51-
_T52-
25354
53-
54-
32.4
25
55Medium
Dense
X
•
56
57
58
------=-----'------- -----
59 -
31-3
------
2$
60
Medium Dense
---------4t-------------
61
}� .
_
62
63
Boring terminated at 61.5 feet.
Groundwater seepage observed below 10
64
feet.
566 65-
66-
67
68
--------
70-
0-Note:
Note:This borehole log has been prepared for geotechnical purposes. This
information pertains only to this boring location and should not be interpeted as
being indicative of other areas of the site.
Terra
'7 -.. Associates, Inc.
Consultants in Geotechnical Engineering,
Geology
LOG OF BORING NO. B-6
Figure No. 8
Project: Long Acres Phase II Project No: T-7159-1 Date Drilled: 8/21/15
Client: Ran Companies Driller: BORETEC Logged By: AJD
Location: Renton, Washington Approx. Elev: N/A
Pocket Penetrometer
Z
o TSF
Consistency/
1 2 3 4
Soil Description
Relative Density
a
Moisture Content %
SPT (N)
L
a
E
WP I-----x-----I WI
• Blows/ft ■
(1)m
0
fn
10 30 50 70 90
I 1 1 .A 1. 1. 4. A .1
10 20 30 40
I. A .I A-
2-
23
3
Brown poorly graded SAND interbedded with
silt, fine to medium grained, moist.
4-
(SM) Mottled
Loose
29.5
8;
5-
K
■
6-
7-
l
8-
.. ..............
-
9 -
-----... .... .... .................. ...............
28.5
7
IF 10-
Loose
x
•
11-
12-
Gray/black poorly graded SAND, fine to
13-
medium grained, wet. (SP)
I
14-
Loose
30
7
15
16-T
I
17-
718-19
18-
19
24.7
16i
20-
Medium Dense
Jr
•
21-
22-
23-
24-
*Trace wood fragments observed at 26 feet.
30.3
: i; ;
25
Loose
26-
6-27-
27-
28-
28
29-
29-
Medium Dense
557
�$
30-
0-31-
31-
32-
32-
33-
33
*Continued on Next Page.
34-
35 -
Terra
p;
Note: This borehole log has been prepared for geotechnical purposes. This
information pertains only to this boring location and should not be interpeted
F;_.. Associates, Inc.
as being indicative of other areas of the site.
Consultants in Geotechnical Engineering, Geology
and Environmental Earth Sciences
LOG OF BORING NO. B-6
Figure No. 8
Project: Long Acres Phase II Project No: T-7159-1 Date Drilled: 8/21/15
Client: Ryan Companies Driller: BORETEC Logged By: AJQ
Location: Renton, Washington Approx. Elev: N/A
Pocket Penetrometer
A TSF o
Consistency/
1 2 3 4
S
Soil Description
Relative Density
—' ' I .I.
L
a
Moisture Content %
SPT (N)
EL
E
Wp I -----x ----- I WI
• Blows/ft •
Q)
0
m
10 30 50 70 90
10 20 30 40
--11.
430
12 �.
36
*From 35.5 to 36.5 soil is interbedded with
Medium Dense
+ ••••.
37
gray silt and brown peat.
38
39
23.6
---- '-------+--------------- --46
40-1Dense
X-
----------------=---•
41
-- ---' --:-----
42
43-
44-
22.4
37
45
Dense
-------
---------------- •
46-
..
47-T
-
48
49
*Occasional shell fragments observed below
......
50 feet.
2a
26
50-150........
Medium Dense
■ • -• •••
51
52-
53
54
31.9
- ......-...:
9
55
Loose
x
a -�-•; --',� -
56 ----------
-------'_-------;-... ......
57------------------
58
59--
33.0
--<13---- ------'- --------
60
Medium Dense
x
----- • -------- ------' -------
61
62
63-
Boring terminated at 61.5 feet.
- -----
Groundwater seepage observed below 10
64-
feet.
- -
65
67
68
70
Note: This borehole log has been prepared for geotechnical purposes. This
information pertains only to this boring location and should not be interpeted as
being indicative of other areas of the site.
Terra
Associates, Inc.
Consultants in Geotechnical Engineering,
Geology