HomeMy WebLinkAboutSDP 2021-0029; IONIS LOTS 21 AND 22; RIPABILITY STUDY; 2023-01-10RIPPABILITY STUDY
IONIS PHARMACEUTICALS
LOTS 21 AND 22
(CARLSBAD OAKS NORTH
BUSINESS PARK)
CARLSBAD, CALIFORNIA
PREPARED FOR
IONIS PHARMACEUTICALS, INC.
CARLSBAD, CALIFORNIA
JANUARY 10, 2023
PROJECT NO. 06442-32-31A
Project No. 06442-32-31A
January 10, 2023
Ionis Pharmaceuticals, Inc.
2855 Gazelle Court
Carlsbad, California 92010
Attention: Mr. Wayne Sanders
Subject: RIPPABILITY STUDY
IONIS PHARMACEUTICALS LOTS 21 AND 22
(CARLSBAD OAKS NORTH BUSINESS PARK)
CARLSBAD, CALIFORNIA
Reference: Update Geotechnical Report, Ionis Lots 21 and 22 (Carlsbad Oaks North Business Park),
Carlsbad, California, dated October 19, 2021, prepared by Geocon Incorporated (Project
No. 06442-32-31A).
Dear Mr. Sanders:
In accordance with your authorization of our change order request (dated December 2, 2022), we have
performed a rippability study for the subject project located in the Carlsbad Oaks North Business Park
in Carlsbad, California. The purpose of this study was to obtain further data regarding rock rippability
in areas of planned excavation extending into granitic rock. The study also provides trench logs to help
evaluating the excavation characteristics and materials encountered in proposed cut areas. The
information presented herein should be used in conjunction with the referenced geotechnical report.
We performed the field investigation December 20 through 22, 2022. The study consisted of drilling 15
hydraulic rotary percussion borings (generically referenced herein as air-track borings). We utilized an
Ingersoll Rand ECM-590 drill rig equipped with a 4-inch diameter drill bit to advance the air-track
borings. We used drill penetration rates to evaluate rock rippability and to estimate the depth at which
difficult excavation will occur. We also excavated nine backhoe trenches utilizing a Caterpillar C349F
trackhoe equipped with a 3-foot-wide bucket. The exploratory trench excavations provide generalized
information on excavation characteristics and percentage of oversize rock (material> 6inches) that may
be generated when excavating in the existing fill and granitic rock. The trench logs are presented in
Appendix A, Figures A-1 through A-9. Figure 1 presents the approximate locations of the air-track
borings and trench excavations.
GEOCON
INCORPORATED
G E OT E CHN I CAL ■E NV I RONMENTA L ■ MA T ER I A L S
6960 Flanders Drive ■ Son Diego, California 92121-297 4 ■ Telephone 858.558.6900 ■ Fax 858.558.6159
Project No. 06442-32-31A - 2 - January 10, 2023
Rock rippability is a function of natural weathering processes that can vary vertically and horizontally
over short distances depending on jointing, fracturing, and/or mineralogic discontinuities within the
bedrock. Therefore, variations in ground conditions as presented in this study may occur.
With respect to air-track borings, a frequently used guideline for equating rock rippability to drill
penetration rate is that a penetration rate of approximately 0 to 20 seconds per foot (spf) generally
indicates rippable material, 20 to 30 spf indicates marginally to non-rippable material, and greater than
30 spf indicates non-rippable rock. These general guidelines are typically based on drill rates using a
rotary percussion drill rig similar to an Ingersoll Rand ECM 360 with a 3½-inch drill bit. The penetration
rates (recorded in spf) are presented in Appendix A, Figures A-10 through A-24. Perspective contractors
should use their own judgment to identify the penetration rate boundary between productive and non-
productive ripping and, rippable and non-rippable rock.
The rippability designations discussed above are based on the use of a Caterpillar D9 or equivalent
bulldozer equipped with a single shank ripper. Rippable materials can be excavated with moderate to
heavy effort. Marginally rippable includes very heavy ripping and isolated zones of probable blasting.
Non-rippable materials will require blasting to excavate the rock.
In summary, data from the field study shows that the bedrock possesses a variable rippable
mantelvarying from approximately 20 to 33 feet thick. This observation is based on using an air-track
penetration rate of 20 spf per the guideline discussed above. Excavations greater than these depths may
encounter difficult ripping conditions requiring blasting techniques and can be expected to generate
oversized rock (material> 6 inches in dimension), which will necessitate typical hard rock handling and
placement procedures during grading operations.
We extended the exploratory trenches approximately 12 to 20 feet below existing ground surface which
was the maximum reach of the trackhoe. Except for two locations, the exploratory trenches were
extended to the planned depth of excavation. In this regard, practical refusal was experienced at
approximately 14 feet below ground surface in T-4 and T-8 (see Appendix A, Figures A-4 and A-8). It
should be noted that proposed cuts in the existing fill and weathered rock mantle will generate oversized
fragments (material> 6 inches in dimension) as shown on the trench logs.
Earthwork construction should be carefully planned to efficiently utilize available rock placement areas.
Oversize materials should be placed in accordance with recommendations presented in the referenced
geotechnical report (dated October 19, 2021).
Project No. 06442-32-31A - 3 - January 10, 2023
If you have any questions regarding this supplemental report, or if we may be of further service, please
contact the undersigned at your convenience.
Very truly yours,
GEOCON INCORPORATED
Emilio Alvarado
RCE 66915
David B. Evans
CEG 1860
EA:DBE:am
(e-mail) Addressee
UP
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BOUNDARY
PROPERTY
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Qcf
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SUBDRAIN CONTINUES AND
EXTEND TO APPROVED OUTLET
385
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T-2
T-3T-4
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T-9
T-1
T-6
T-8
T-7
6960 FLANDERS DRIVE - SAN DIEGO, CALIFORNIA 92121 - 2974
PHONE 858 558-6900 - FAX 858 558-6159 SHEET OF
PROJECT NO.
SCALE DATE
FIGURE
Plotted:01/09/2023 5:07PM | By:ALVIN LADRILLONO | File Location:Y:\PROJECTS\06442-32-31A Ionis Lots 21 and 22\SHEETS\06442-32-31A GeologicMap.20.dwg
GEOTECHNICAL ENVIRONMENTAL MATERIALS
1" =
EXPLORA8OR= 8RENCH AND AIR-8RAC/ &ORING LOCA8ION 1AP
IONIS PHARMACEUTICALS LOTS 21 AND 22
CARLSBAD, CALIFORNIA
30' 01 - 10 - 2023
06442 - 32 - 31A
1 1 1
386
GEOCON LEGEND
........COMPACTED FILLQcf
........APPROX. LOCATION OF GEOLOGIC CONTACT
........APPROX. LOCATION OF GEOLOGIC CROSS-SECTIONC C'
........APPROX. ELEVATION AT BASE OF FILL385
........GRANITIC ROCK (Dotted Where Buried)Kgr
........COMPACTED FILL IN UNDERCUT AREAQuc
........APPROX. LOCATION OF SUBDRAIN
........APPROX. ELEVATION OF SUBDRAIN
........STRIKE AND DIP OF JOINT37
........APPROX. LOCATION OF EXPLORATORY TRENCH
........APPROX. LOCATION OF AIR-TRACK BORING
T-9
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SCALE /"=JO' (On 42xJO)
■
APPENDIX A
APPENDIX A
EXPLORATORY TRENCH AND
AIR-TRACK BORING LOGS
FOR
IONIS PHARMACUETICALS LOTS 21 AND 22
(CARLSBAD OAKS NORTH BUSINESS PARK)
CARLSBAD, CALIFORNIA
PROJECT NO. 06442-32-31A
COMPACTED FILL (Qcf)
Loose to medium dense, moist, mottled yellowish and reddish brown,
medium to coarse SAND with little silt and approx. 5-10% rock up to 6-inch
diameter (rock crumbles or breaks with several blows from geology hammer)
-Becomes medium dense to dense at 1 foot
GRANITIC ROCK (Kgr)
Highly weathered, damp, mottled yellowish and orange brown, moderately
weak GRANITIC ROCK; excavates to a medium to coarse sand with little silt
and approx. 10-20% rock up to 8-inch diameter (rock crumbles or breaks
with several blows from geology hammer)
-Becomes highly to moderately weathered, strong to very strong at 7 feet
-Moderately to heavy excavation effort below 8 feet
-A "floater" boulder up to 2-foot in diameter at 10 feet
-Heavy excavation effort at 15 feet
BOTTOM OF TRENCH AT 17 FEET
Groundwater not encountered
Backfilled with trench spoils
SM
... DISTURBED OR BAG SAMPLE
GEOCON
DEPTH
IN
FEET
0
2
4
6
8
10
12
14
16
Figure A-1,
Log of Trench T 1, Page 1 of 1
DR
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(P
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... DRIVE SAMPLE (UNDISTURBED)
C349F with 3' Wide Bucket PE
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TRENCH T 1
... CHUNK SAMPLE
DATE COMPLETED
... SAMPLING UNSUCCESSFUL
SOIL
CLASS
(USCS)
GR
O
U
N
D
W
A
T
E
R
D. McPEAK CO
N
T
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N
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(
%
)
SAMPLE
NO.12/21/2022
SAMPLE SYMBOLS
MO
I
S
T
U
R
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BY:EQUIPMENT
ELEV. (MSL.)440'
06442-32-31A.GPJ
MATERIAL DESCRIPTION
LI
T
H
O
L
O
G
Y
... STANDARD PENETRATION TEST
... WATER TABLE OR ... SEEPAGE
NOTE:
PROJECT NO.
THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED.
IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
06442-32-31A
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COMPACTED FILL (Qcf)
Loose to medium dense, moist, mottled yellowish and reddish brown,
medium to coarse SAND with little silt and approx. 10-15% rock up to 6-inch
diameter (rock crumbles or breaks with several blows from geology hammer)
-Becomes medium dense to dense at 1 foot
GRANITIC ROCK (Kgr)
Highly weathered, damp, mottled yellowish and orange brown, weak to
moderately weak GRANITIC ROCK; excavates to a medium to coarse sand
with little silt and approx. 10-20% rock up to 8-inch diameter (rock crumbles
or breaks with several blows from geology hammer)
-Becomes highly to moderately weathered, strong to very strong, moderate to
heavy excavation effort with "floater" boulder up to 3-feet in diameter at 10
feet
-Approximate 25-35% rock up to 8-inch diameter at 12 feet (rock crumbles or
breaks with several blows from geology hammer)
-Heavy excavation effort below 14 feet
BOTTOM OF TRENCH AT 18 FEET
Groundwater not encountered
Backfilled with trench spoils
SM
... DISTURBED OR BAG SAMPLE
GEOCON
DEPTH
IN
FEET
0
2
4
6
8
10
12
14
16
18
Figure A-2,
Log of Trench T 2, Page 1 of 1
DR
Y
D
E
N
S
I
T
Y
(P
.
C
.
F
.
)
... DRIVE SAMPLE (UNDISTURBED)
C349F with 3' Wide Bucket PE
N
E
T
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A
T
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O
N
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S
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S
T
A
N
C
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(B
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O
W
S
/
F
T
.
)
TRENCH T 2
... CHUNK SAMPLE
DATE COMPLETED
... SAMPLING UNSUCCESSFUL
SOIL
CLASS
(USCS)
GR
O
U
N
D
W
A
T
E
R
D. McPEAK CO
N
T
E
N
T
(
%
)
SAMPLE
NO.12/21/2022
SAMPLE SYMBOLS
MO
I
S
T
U
R
E
BY:EQUIPMENT
ELEV. (MSL.)443'
06442-32-31A.GPJ
MATERIAL DESCRIPTION
LI
T
H
O
L
O
G
Y
... STANDARD PENETRATION TEST
... WATER TABLE OR ... SEEPAGE
NOTE:
PROJECT NO.
THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED.
IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
06442-32-31A
~ --
~ --
~ --
~ --
~ -+ +
+ ~ -+ + -
+ ~ -+ + -
+ ~ -+ + -
+
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+
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+
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+
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+
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+
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COMPACTED FILL (Qcf)
Loose to medium dense, moist, mottled yellowish and reddish brown,
medium to coarse SAND with little silt and approx. 5-10% rock up to 6-inch
diameter (rock crumbles or breaks with several blows from geology hammer)
-Becomes medium dense to dense at 1 foot
GRANITIC ROCK (Kgr)
Highly weathered, damp, mottled yellowish and orange brown, weak to
moderately weak GRANITIC ROCK; excavates to a medium to coarse sand
with little silt and approx. 10-20% rock up to 8-inch diameter (rock crumbles
or breaks with several blow from geology hammer)
-Becomes highly to moderately weathered, strong to very strong, moderately
to heavy excavation effort with "floater" boulder up to 2-feet diameter at 8
feet
-Becomes moderately weathered, very strong, approx. 20-30% rock up to
1-foot diameter and heavy excavation effort at 9 feet
-Becomes highly to moderately weathered, moderately to heavy excavation
effort below 12 feet
BOTTOM OF TRENCH AT 18 FEET
Groundwater not encountered
Backfilled with trench spoils
SM
... DISTURBED OR BAG SAMPLE
GEOCON
DEPTH
IN
FEET
0
2
4
6
8
10
12
14
16
18
Figure A-3,
Log of Trench T 3, Page 1 of 1
DR
Y
D
E
N
S
I
T
Y
(P
.
C
.
F
.
)
... DRIVE SAMPLE (UNDISTURBED)
C349F with 3' Wide Bucket PE
N
E
T
R
A
T
I
O
N
RE
S
I
S
T
A
N
C
E
(B
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O
W
S
/
F
T
.
)
TRENCH T 3
... CHUNK SAMPLE
DATE COMPLETED
... SAMPLING UNSUCCESSFUL
SOIL
CLASS
(USCS)
GR
O
U
N
D
W
A
T
E
R
D. McPEAK CO
N
T
E
N
T
(
%
)
SAMPLE
NO.12/21/2022
SAMPLE SYMBOLS
MO
I
S
T
U
R
E
BY:EQUIPMENT
ELEV. (MSL.)444'
06442-32-31A.GPJ
MATERIAL DESCRIPTION
LI
T
H
O
L
O
G
Y
... STANDARD PENETRATION TEST
... WATER TABLE OR ... SEEPAGE
NOTE:
PROJECT NO.
THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED.
IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
06442-32-31A
~ --
~ --
~ --
~ --
~ -+ +
+ ~ -+ + -
+ ~ -+ + -
+ ~ -+ + -
+
~ -+ + -
+
~ -+ + -
+
~ -+ + -
+
~ -+ + -
+
~ -+ + -
+
~ -+ + -
+
~ -+ + -
+
~ -+ + -
+
~
COMPACTED FILL (Qcf)
Loose to medium dense, moist, mottled yellowish and reddish brown,
medium to coarse SAND with little silt and approx. 10-15% rock up to 6-inch
diameter (rock crumbles or breaks with several blows from geology hammer)
-Becomes medium dense to dense at 1 foot
GRANITIC ROCK (Kgr)
Moderately weathered, damp, mottled yellowish and orange brown,
moderately strong to strong GRANITIC ROCK; excavates to a medium to
coarse sand with little silt and approx. 20-30% rock up to 2-feet diameter
(rock crumbles or breaks with several blows from geology hammer)
-Becomes strong to very strong, approx. 10-20% rock up to 1-foot diameter
with "floater" boulder up to 2-feet diameter and heavy excavation effort at 10
feet
-Becomes very strong to extremely strong at 12 feet
-Heavy to very heavy excavation effort below 13 feet
PRACTICAL REFUSAL AT 14 FEET
Groundwater not encountered
Backfilled with trench spoils
SM
... DISTURBED OR BAG SAMPLE
GEOCON
DEPTH
IN
FEET
0
2
4
6
8
10
12
14
Figure A-4,
Log of Trench T 4, Page 1 of 1
DR
Y
D
E
N
S
I
T
Y
(P
.
C
.
F
.
)
... DRIVE SAMPLE (UNDISTURBED)
C349F with 3' Wide Bucket PE
N
E
T
R
A
T
I
O
N
RE
S
I
S
T
A
N
C
E
(B
L
O
W
S
/
F
T
.
)
TRENCH T 4
... CHUNK SAMPLE
DATE COMPLETED
... SAMPLING UNSUCCESSFUL
SOIL
CLASS
(USCS)
GR
O
U
N
D
W
A
T
E
R
D. McPEAK CO
N
T
E
N
T
(
%
)
SAMPLE
NO.12/21/2022
SAMPLE SYMBOLS
MO
I
S
T
U
R
E
BY:EQUIPMENT
ELEV. (MSL.)445'
06442-32-31A.GPJ
MATERIAL DESCRIPTION
LI
T
H
O
L
O
G
Y
... STANDARD PENETRATION TEST
... WATER TABLE OR ... SEEPAGE
NOTE:
PROJECT NO.
THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED.
IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
06442-32-31A
-
-
-
-
,... -+ + ,... -+ + ,... -+ + ,... -+ + ,... -+ + ,... -+ + ,... -+ + ,... -+ +
+
+
+
+
+
+
+
+
I]
~
■
_y
-
-
-
-
-
-
-
-
-
-
-
COMPACTED FILL (Qcf)
Loose to medium dense, moist, mottled yellowish and reddish brown,
medium to coarse SAND with little silt and approx. 10-15% rock up to
6-inch diameter (rock crumbles or breaks with several blows from geology
hammer)
-Becomes medium dense to dense at 1 foot
GRANITIC ROCK (Kgr)
Completely to highly weathered, damp, mottled yellowish and reddish brown,
weak to moderately weak GRANITIC ROCK; excavates to a medium to
coarse sand with little silt and approx. 10-20% rock up to 8-inch diameter
(rock crumbles or breaks with several blows from geology hammer)
-Moderate excavation effort below 15 feet
BOTTOM OF TRENCH AT 18 FEET
Groundwater not encountered
Backfilled with trench spoils
SM
... DISTURBED OR BAG SAMPLE
GEOCON
DEPTH
IN
FEET
0
2
4
6
8
10
12
14
16
18
Figure A-5,
Log of Trench T 5, Page 1 of 1
DR
Y
D
E
N
S
I
T
Y
(P
.
C
.
F
.
)
... DRIVE SAMPLE (UNDISTURBED)
C349F with 3' Wide Bucket PE
N
E
T
R
A
T
I
O
N
RE
S
I
S
T
A
N
C
E
(B
L
O
W
S
/
F
T
.
)
TRENCH T 5
... CHUNK SAMPLE
DATE COMPLETED
... SAMPLING UNSUCCESSFUL
SOIL
CLASS
(USCS)
GR
O
U
N
D
W
A
T
E
R
D. McPEAK CO
N
T
E
N
T
(
%
)
SAMPLE
NO.12/21/2022
SAMPLE SYMBOLS
MO
I
S
T
U
R
E
BY:EQUIPMENT
ELEV. (MSL.)443'
06442-32-31A.GPJ
MATERIAL DESCRIPTION
LI
T
H
O
L
O
G
Y
... STANDARD PENETRATION TEST
... WATER TABLE OR ... SEEPAGE
NOTE:
PROJECT NO.
THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED.
IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
06442-32-31A
,...
,...
,...
,...
,...
,...
,...
,...
,...
,...
,...
,...
,...
,...
,...
,...
,...
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
I]
~
■
_y
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
COMPACTED FILL (Qcf)
Loose to medium dense, damp to moist, mottled orange and olive brown,
medium to coarse SAND with little silt and approx. 5-10% rock up to 6-inch
diameter (rock crumbles or breaks with several blows from geology hammer)
-Becomes medium dense to dense, moist at 1 foot
-Becomes dark olive brown, silty, fine to medium with few clay and trace
organics 7 feet
-A "floater" boulder up to 2-foot diameter at 8 feet
-Becomes mottled orange and olive brown, medium to coarse sand with little
silt at 9 feet
GRANITIC ROCK (Kgr)
Highly weathered, moist, mottled yellowish, orange and olive brown, weak to
moderately weak GRANITIC ROCK; excavates to a medium to coarse sand
with little silt and approximate 5-10% rock up to 4-inch diameter (rock
crumbles or breaks with several blows from geology hammer)
-Moderate to heavy excavation effort below 15 feet
BOTTOM OF TRENCH AT 19 FEET
Groundwater not encountered
Backfilled with trench spoils
SM
... DISTURBED OR BAG SAMPLE
GEOCON
DEPTH
IN
FEET
0
2
4
6
8
10
12
14
16
18
Figure A-6,
Log of Trench T 6, Page 1 of 1
DR
Y
D
E
N
S
I
T
Y
(P
.
C
.
F
.
)
... DRIVE SAMPLE (UNDISTURBED)
C349F with 3' Wide Bucket PE
N
E
T
R
A
T
I
O
N
RE
S
I
S
T
A
N
C
E
(B
L
O
W
S
/
F
T
.
)
TRENCH T 6
... CHUNK SAMPLE
DATE COMPLETED
... SAMPLING UNSUCCESSFUL
SOIL
CLASS
(USCS)
GR
O
U
N
D
W
A
T
E
R
E. ALVARADO CO
N
T
E
N
T
(
%
)
SAMPLE
NO.12/22/2022
SAMPLE SYMBOLS
MO
I
S
T
U
R
E
BY:EQUIPMENT
ELEV. (MSL.)442'
06442-32-31A.GPJ
MATERIAL DESCRIPTION
LI
T
H
O
L
O
G
Y
... STANDARD PENETRATION TEST
... WATER TABLE OR ... SEEPAGE
NOTE:
PROJECT NO.
THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED.
IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
06442-32-31A
~ -
~ -
~ -
~ -
~ -
~ -
~ -
~ -
~ -
~ -
~ -
~ -
~ -
~ -
~ -
~ -
~ -
~
.. : . .-
.. : . .-..
.. : . .-..
.. : . .-..
.. : . .-..
.. : . .-..
+ + + + + + + + + + + + + + + + + + + + +
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
COMPACTED FILL (Qcf)
Loose to medium dense, damp to moist, mottled orange and olive brown,
medium to coarse SAND with little silt and approx. 5-10% rock up to 6-inch
diameter (rock crumbles or breaks with several blows from geology hammer)
-Becomes medium dense to dense, moist at 1 foot
-Becomes dark olive brown, silty, fine to medium with few clay and trace
organics at 8 feet
-Becomes mottled orange and dark olive brown, fine to coarse with trace clay
at 11 feet
BOTTOM OF TRENCH AT 20 FEET
Groundwater not encountered
Backfilled with trench spoils
SM
... DISTURBED OR BAG SAMPLE
GEOCON
DEPTH
IN
FEET
0
2
4
6
8
10
12
14
16
18
20
Figure A-7,
Log of Trench T 7, Page 1 of 1
DR
Y
D
E
N
S
I
T
Y
(P
.
C
.
F
.
)
... DRIVE SAMPLE (UNDISTURBED)
C349F with 3' Wide Bucket PE
N
E
T
R
A
T
I
O
N
RE
S
I
S
T
A
N
C
E
(B
L
O
W
S
/
F
T
.
)
TRENCH T 7
... CHUNK SAMPLE
DATE COMPLETED
... SAMPLING UNSUCCESSFUL
SOIL
CLASS
(USCS)
GR
O
U
N
D
W
A
T
E
R
E. ALVARADO CO
N
T
E
N
T
(
%
)
SAMPLE
NO.12/22/2022
SAMPLE SYMBOLS
MO
I
S
T
U
R
E
BY:EQUIPMENT
ELEV. (MSL.)440'
06442-32-31A.GPJ
MATERIAL DESCRIPTION
LI
T
H
O
L
O
G
Y
... STANDARD PENETRATION TEST
... WATER TABLE OR ... SEEPAGE
NOTE:
PROJECT NO.
THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED.
IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
06442-32-31A
~ --
~ --.. : . .-
~ --
~ -.. : . .-.. -
~ --.. : . .-..
~ --
.. : . .-..
~ --
~ --.. : . .-..
~ --
.. : . .-..
~ --
~ -.. : . .-.. -
~ --.. : . .-..
~ --
~ -.. : . .-.. -
~ --.. : . .-..
~ --
.. : . .-..
~ --
~ --.. : . .-..
~
COMPACTED FILL (Qcf)
Loose to medium dense, damp to moist, mottled orange and olive brown,
medium to coarse SAND with silt and approx. 5-10% rock up to 6-inch
diameter (rock crumbles or breaks with several blows from geology hammer)
-Becomes medium dense to dense, moist at 1 foot
-Becomes dark olive brown, silty, fine to medium with few clay and trace
organics at 5 feet
GRANITIC ROCK (Kgr)
Highly weathered, moist, mottled orange and olive brown, moderately weak
to moderately strong GRANITIC ROCK; excavates to a medium to coarse
sand with little silt and approximate 5-10% rock up to 8-inch diameter (rock
crumbles or breaks with several blows from geology hammer)
-Becomes moderately weathered with approx. 10-15% rock up to 18-inch
diameter at 7 feet
-A "floater" boulder up to 4-feet diameter at 8 feet
-Becomes very strong to extremely strong and very heavy excavation effort
below 9 feet
PRACTICAL REFUSAL AT 14 FEET
Groundwater not encountered
Backfilled with trench spoils
SM
... DISTURBED OR BAG SAMPLE
GEOCON
DEPTH
IN
FEET
0
2
4
6
8
10
12
14
Figure A-8,
Log of Trench T 8, Page 1 of 1
DR
Y
D
E
N
S
I
T
Y
(P
.
C
.
F
.
)
... DRIVE SAMPLE (UNDISTURBED)
C349F with 3' Wide Bucket PE
N
E
T
R
A
T
I
O
N
RE
S
I
S
T
A
N
C
E
(B
L
O
W
S
/
F
T
.
)
TRENCH T 8
... CHUNK SAMPLE
DATE COMPLETED
... SAMPLING UNSUCCESSFUL
SOIL
CLASS
(USCS)
GR
O
U
N
D
W
A
T
E
R
E. ALVARADO CO
N
T
E
N
T
(
%
)
SAMPLE
NO.12/22/2022
SAMPLE SYMBOLS
MO
I
S
T
U
R
E
BY:EQUIPMENT
ELEV. (MSL.)445'
06442-32-31A.GPJ
MATERIAL DESCRIPTION
LI
T
H
O
L
O
G
Y
... STANDARD PENETRATION TEST
... WATER TABLE OR ... SEEPAGE
NOTE:
PROJECT NO.
THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED.
IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
06442-32-31A
-
-
-
-
,... -+ + ,... -+ + ,... -+ + ,... -+ + ,... -+ + ,... -+ + ,... -+ + ,... -+ +
+
+
+
+
+
+
+
+
I]
~
■
_y
-
-
-
-
-
-
-
-
-
-
-
COMPACTED FILL (Qcf)
Loose to medium dense, moist, mottled orange and olive brown, medium to
coarse SAND with little silt and approx. 5-10% rock up to 4-inch diameter
(rock crumbles or breaks with several blows from geology hammer)
-Becomes medium dense to dense at 1 foot
GRANITIC ROCK (Kgr)
Highly weathered, moist, mottled orange and olive brown, weak to
moderately weak GRANITIC ROCK; excavates to a medium to coarse sand
with little silt and approx. 5-10% rock up to 6-inch diameter (rock crumbles
or breaks with several blows from geology hammer)
-Moderate to heavy excavation effort below 10 feet
BOTTOM OF TRENCH AT 12 FEET
Groundwater not encountered
Backfilled with trench spoils
SM
... DISTURBED OR BAG SAMPLE
GEOCON
DEPTH
IN
FEET
0
2
4
6
8
10
12
Figure A-9,
Log of Trench T 9, Page 1 of 1
DR
Y
D
E
N
S
I
T
Y
(P
.
C
.
F
.
)
... DRIVE SAMPLE (UNDISTURBED)
C349F with 3' Wide Bucket PE
N
E
T
R
A
T
I
O
N
RE
S
I
S
T
A
N
C
E
(B
L
O
W
S
/
F
T
.
)
TRENCH T 9
... CHUNK SAMPLE
DATE COMPLETED
... SAMPLING UNSUCCESSFUL
SOIL
CLASS
(USCS)
GR
O
U
N
D
W
A
T
E
R
E. ALVARADO CO
N
T
E
N
T
(
%
)
SAMPLE
NO.12/22/2022
SAMPLE SYMBOLS
MO
I
S
T
U
R
E
BY:EQUIPMENT
ELEV. (MSL.)430'
06442-32-31A.GPJ
MATERIAL DESCRIPTION
LI
T
H
O
L
O
G
Y
... STANDARD PENETRATION TEST
... WATER TABLE OR ... SEEPAGE
NOTE:
PROJECT NO.
THE LOG OF SUBSURFACE CONDITIONS SHOWN HEREON APPLIES ONLY AT THE SPECIFIC BORING OR TRENCH LOCATION AND AT THE DATE INDICATED.
IT IS NOT WARRANTED TO BE REPRESENTATIVE OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS AND TIMES.
06442-32-31A
-
-
-
-
,... -+ + ,... -+ + ,... -+ + ,... -+ + ,... -+ + ,... -+ +
+
+
+
+
+
+
I]
~
■
_y
-
-
-
-
-
-
-
-
-
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT001.xls FIGURE A-10
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-1Elevation -430 Feet (MSL)Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON
INCORPORATED
mmm
mmm
--
--
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT002.xls FIGURE A-11
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-2Elevation -443 Feet (MSL)Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON
INCORPORATED
mmm
mmm
--
--
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT003.xls FIGURE A-12
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-3Elevation -443 Feet (MSL)Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON INCORPORATED
mm
mm mm
Elm --
--
---
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT004.xls FIGURE A-13
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-4Elevation -443 Feet (MSL)
Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON
INCORPORATED
--
--
---
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT005.xls FIGURE A-14
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-5Elevation -445 Feet (MSL)
Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON
INCORPORATED
--
---
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT006.xls FIGURE A-15
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-6Elevation -443 Feet (MSL)
Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON
INCORPORATED
----
---
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT007.xls FIGURE A-16
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-7Elevation -441 Feet (MSL)
Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON
INCORPORATED
--
---
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT008.xls FIGURE A-17
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-8Elevation -442 Feet (MSL)
Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON
INCORPORATED
--------
---
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT009.xls FIGURE A-18
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-9Elevation -443 Feet (MSL)
Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON
INCORPORATED
--
--
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT010.xls FIGURE A-19
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-10Elevation -445 Feet (MSL)
Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON
INCORPORATED
------
--
---
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT011.xls FIGURE A-20
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-11Elevation -445 Feet (MSL)
Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON
INCORPORATED
--
---
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT012.xls FIGURE A-21
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-12Elevation -443 Feet (MSL)
Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON
INCORPORATED
a
a --
---
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT001.xls FIGURE A-22
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-13Elevation -443 Feet (MSL)
Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON
INCORPORATED
Em ----
--
---
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT024.xls FIGURE A-23
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-14Elevation -442 Feet (MSL)
Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON
INCORPORATED
--------
--
---
PROJECT NO. 06442-32-31A IONIS PHARMACEUTICALS LOTS 21 AND 22
AT015.xls FIGURE A-24
0.0 10.0 20.0 30.0 40.0 50.0 60.0
0
5
10
15
20
25
30
35
40
45
50
DRILL RATE (seconds per foot)
DE
P
T
H
(
f
e
e
t
)
AIR TRACK BORING NO. AT-15Elevation -440 Feet (MSL)
Date 12-20-2022 -Equipment: IR 590 with 4-inch bit
GEOCON
INCORPORATED
Em
--
---