APPENDIX C SUBSURFACE EXPLORATIONS - Los Angeles Addendum-Appendix C.pdfThe triple-tube core barrel...

51-1-10052-021

APPENDIX C

SUBSURFACE EXPLORATIONS

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C-i

APPENDIX C


TABLE OF CONTENTS

Page

C.1. GENERAL .......................................................................................................................C-1

C.2. DRILLING PROCEDURES ............................................................................................C-1

C.3. SAMPLING PROCEDURES ..........................................................................................C-2

C.3.1. Rotary Core Samples .........................................................................................C-2 C.3.2. Grab Samples .....................................................................................................C-2

C.4. ENVIRONMENTAL FIELD SCREENING FOR VOLITILE ORGANIC COMPOUNDS (VOCS) ............................................................................................................................C-2

C.5. REVIEW AND CLASSIFICATION OF SAMPLES ......................................................C-3 C.5.1. Field Observations .............................................................................................C-3

C.5.2. Soil Classification System .................................................................................C-3 C.5.3. Geologic Units and Descriptions .......................................................................C-3 C.5.4. Boring Logs .......................................................................................................C-3

C.6. REFFERENCES ..............................................................................................................C-4

FIGURES

C-1 Soil Classification and Log Key (3 sheets)

C-2 Log of Boring B-1 Revised (6 sheets)

C-3 Log of Boring B-7 Revised (9 sheets)

C-4 Log of Boring B-10 (9 sheets)

C-5 Log of Boring B-11 (9 sheets)

C-6 Core Photographs Boring B-10 (10 sheets)

C-7 Core Photographs Boring B-11 (10 sheets)

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C-1

APPENDIX C


C.1. GENERAL

Shannon & Wilson drilled two new borings at the locations shown on Plate 1. The borings were

both completed to depths of 130.5 feet below the existing ground surface. In total,

approximately 261 feet of drilling was performed for this portion of the project.

A description of the drilling methods and other field procedures used to perform the subsurface

explorations is included in this appendix. Results of the explorations are included as Figures C-2

and C-3. Photographs of the rotary core samples are included as Figures C-4 and C-5.

C.2. DRILLING PROCEDURES

Gregg Drilling & Testing, Inc. of Signal Hill, California, provided and operated a truck-mounted

CME 75 rotary drill rig to complete borings B-10 and B-11 between July 16, 2012 and July 24,

2012.

The triple-tube core barrel used in the rotary core drilling method by Gregg Drilling consists of

inner and outer barrels and a split inner core tube. The outer barrel rotates while the inner barrel

and the inner split tube remain stationary. This system helps protect the core from the drilling

fluid (mixture of soil/rock cuttings and water) and reduces the torsional forces transmitted to the

core. In addition, the split inner tube allows for detailed visual analysis of the relatively

undisturbed core. The system used by Gregg Drilling for this project was a HQ-3 system, where

the core diameter is 2.5 inches and the borehole diameter is 3.77 inches.

To ream borings B-10 and B-11 for inclinometer installation, mud-rotary drilling was performed

by Gregg Drilling using a CME-75 truck-mounted drill rig equipped with a 6-inch-diameter tri-

cone bit. During the mud-rotary drilling, bentonite drilling mud was pumped out of a mud tank

at the ground surface, down the N-size (2.8-inch OD) drill rods, out through the bit at the bottom

of the borehole, up the annulus of the hole between the drill rods and the borehole, and back into

the mud tank. The circulating drilling mud removed the cuttings generated by the drilling

process from the hole, carrying them to the surface where they were screened and removed from

the circulating drilling mud.

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C-2

C.3. SAMPLING PROCEDURES

C.3.1. Rotary Core Samples

The 2.5-inch-diameter core samples obtained from the rotary core borings B-10 and B-11

were photographed while in half of the inner split tube, visually examined by our field

representative, and placed into core boxes.

Our field representative observed the coring process, logged the core, and noted the

bedding, fractures and rock “quality”. Rock quality is typically conveyed in terms of the Rock

Quality Designation (RQD), which is defined as the sum of the length of core pieces in a given

core run that are greater than 4 inches in length divided by the total core run length. The percent

recovery and RQD are represented graphically on the boring logs. The samples obtained from

the rotary core method are assumed to be relatively undisturbed. Rock type, relative orientations

of any bedding or discontinuities, and any other pertinent features were measured, recorded and

noted on the log of each boring. Selected sections of the core were removed for use in laboratory

strength testing. The remaining rock core was stored in wood core boxes. The rock core was

transported to our office.

C.3.2. Grab Samples

Grab samples are defined as samples that are “grabbed” from cuttings generated from the

drilling process or directly from the side or bottom of the hole using a hand-operated tool.

While other types of sampling (e.g., rock core sampling or penetration test sampling)

represent a specific depth in the drilled hole, grab samples often have a less accurate depth

because they are compiled from a depth range within a boring. The approximate sample depth

was estimated and is noted on the exploration logs.

C.4. ENVIRONMENTAL FIELD SCREENING FOR VOLITILE ORGANIC

COMPOUNDS (VOCS)

Soil samples were field screened by the Shannon & Wilson field representative for

contamination in accordance with Shannon & Wilson’s Field Inspector’s Guidelines. Field-

screening methods consist of (a) visual observations, (b) photoionization detector (PID)

measurements, (c) and/or olfactory observations. The PID was used to screen for the presence

VOCs. Field screening did not indicate potential soil contamination.

The intent of PID monitoring is to evaluate the potential presence of contamination of soil and

potential exposure to VOC in the breathing zone during drilling operations.

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C-3

We performed chemical testing on samples of the drill cutting and mud. The results of those

tests are presented in Appendix H.

C.5. REVIEW AND CLASSIFICATION OF SAMPLES

C.5.1. Field Observations

The borings were observed by a Shannon & Wilson field representative, who collected,

classified, stored, and transported soil and rock samples; performed field screening; and prepared

a detailed log of the exploration. In addition to examining and collecting soil samples, the field

representatives also noted drill action, problems during drilling (e.g., heave, hole collapse, etc.),

and other issues.

C.5.2. Soil Classification System

Soil classification for this project was based on ASTM D 2487, Standard Test Method for

Classification of Soil for Engineering Purposes, and ASTM D 2488, Standard Recommended

Practice for Description of Soils (Visual-Manual Procedure). The system is called the Unified

Soil Classification System (USCS) and is summarized in Figure C-1. Rock classification was

done in accordance with International Society of Rock Mechanics (Ulusay et al., 2007) methods.

Figure C-1 presents a summary of the ISRM rock classification system.

C.5.3. Geologic Units and Descriptions

The geologic units as described in the report are used to maintain consistency when

defining geology encountered in the borings throughout the project area. These geologic units

are interpretive and are based on our review of existing geologic literature for the project area.

The geologic unit designations for each soil layer are shown in the descriptions in the boring logs

included in this appendix.

C.5.4. Boring Logs

A boring log is a written record of the subsurface conditions encountered in the

exploration. It shows the soil layers encountered in the exploration and the rock or USCS

symbol of each layer. The boring logs presented in this appendix include a numerical

representation of the uncorrected blow counts measured in the penetration tests and the results of

selected laboratory index tests (see Appendix H). Other information shown in the boring logs

includes groundwater level measurements, horizontal coordinates, surface elevation, and types

and depths of sampling. In boreholes where downhole televiewer was performed, measured

bedding and discontinuity attitudes are shown on the boring logs.

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C-4

The review and completion of the final boring logs were performed by following a

Quality Assurance/Quality Control (QA/QC) process developed by Shannon & Wilson. This

program includes review of the samples by an experienced geologist after initial field

observations are made, cross-checks with laboratory test results, and further cross-checks with

developed geologic profiles. This detailed procedure is followed to assure consistency of the

data presentation and to provide adequate QC for each exploration. Revised boring logs, showing

corrected attitudes, are presented for borings B-1 and B-7.

C.6. REFFERENCES

ASTM International (ASTM), 2006, Annual Book of Standards-Construction, v. 4.08, soil and

rock, (I): D 420 – D 5611: West Conshohocken, Pa

Ulusay, Resat and Hudson, J. A., eds., 2007, The complete ISRM suggested methods for rock

characterization, testing and monitoring: 1974-2006: Ankara, Commission on Testing

Methods, International Society of Rock Mechanics, 628 p.

1.0

5.3

9.0

10.5

17.5

20.0

22.2

Asphalt Paving

Stiff to very stiff, brownish-black (5YR 2/1), slightly sandy to sandy, siltyCLAY; moist; scattered small ash blebs; (Qt) CH/CL.

Disturbed, stiff to very stiff, very pale orange (10YR 8/2) to mottled, paleyellowish-brown (10YR 6/2) and moderate yellowish-brown (10YR 5/4),clayey SILT to silty CLAY, moist; locally slightly fine to medium sandy,scattered to numerous silty clay clasts and ash blebs, scattered siltclasts at about 8.5 feet, disturbed fine sandstone seam at about 6.7feet; (Qt) CL/ML.

SILTSTONE TO CLAYSTONE: Very low strength, very pale orange(10YR 8/2) to moderate yellowish-brown (10YR 5/4), interbedded,locally laminated; scattered highly fractured/disturbed layers, scatteredwarped layers and clasts, (Tma).

CLAYSTONE: Very low strength, mottled, moderate yellowish-brown(10YR 5/4), grayish-orange (10YR 7/4) and dark yellowish-brown(10YR 6/6), interbedded with silicious to clayey siltstone, scatteredirregular/discontinous fine-grained sandstone seams or zones, locallyirregularly laminated, disturbed bedding; scattered ash beds; iron-oxidestained; highly weathered to completely weathered, (Tma).

SILTSTONE to CLAYSTONE: Very low strength, moderateyellowish-brown (10YR 5/4) and dark yellowish-brown (10YR 6/6) topale yellowish-brown (10YR 6/2), interbedded, scattered fine-grainedsandstone seams, bedding horizontal to dipping at about 10 degrees,locally warped laminae; scattered ash blebs; iron-oxide stained; highlyweathered to completely weathered, (Tma).

SANDSTONE: Very low to low strength, moderate yellowish-brown(10YR 5/4) and pale yellowish-brown (10YR 6/2) to grayish-orange(10YR 7/4), fine-grained, scattered thin siltstone interbeds; locallyhighly fractured; iron-oxide stained; highly fractured at about 20 to 21.5feet and 23 to 23.5 feet; moderately weathered to highly weathered(Tma).

SILTSTONE: Very low strength, moderate yellowish-brown (10YR 5/4)to yellowish-gray (5Y 7/2), scattered fine to medium-grained sandstonelayers, thin-bedded, bedding dipping at about 10 to 15 degrees; veryclose to closely spaced joints, locally highly fractured; scattered ash

21

19

23

16

23

23

34

19

14

16

14

19

26

30

94/9"

S-1

S-2

S-3

S-4

S-5

S-6

S-7

S-8

S-9

S-10

S-11

S-12

S-13

S-14

S-15

100

Drilling Method:Drilling Company:Drill Rig Equipment:Other Comments:

Northing:Easting:Station:Offset:

SHANNON & WILSON, INC.Sheet 1 of 6

REV 3.1

3.5 in.AWJ

Automatic

LOG OF BORING B-1

Total Depth:Top Elevation:Vert. Datum:Horiz. Datum:

November 2012 51-1-10052-021

Geotechnical and Environmental Consultants

White Point LandslideSan Pedro District

Los Angeles, California

FIG. C.2

Hole Diam.:Rod Diam.:Hammer Type:

Ele

v., f

t

Dep

th, f

t.

120

115

110

105

100

Refer to the report text for a proper understanding of thesubsurface materials and drilling methods. The stratification linesindicated below represent the approximate boundaries between

material types, and the transition may be gradual.

SOIL DESCRIPTION

5

10

15

20

5

10

15

20

Dep

th, f

t

1. Refer to KEY for explanation of symbols, codes, abbreviations and definitions.

2. Groundwater level, if indicated above, is for the date specified and may vary.

3. USCS designation is based on visual-manual classification and selected lab testing.

NOTES

* Sample Not Recovered Ground Water Level ATDLEGEND

CONTINUED NEXT SHEET

Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

:R

ev:

Log:

Sym

bol/

Ske

tch

131.2 ft.123.0 ft.

MSLN/A

HSA/HQ/ARJet DrillingCME 75Asphalt Surface of Paseo Del Mar

Modified California Sampler

Rock Core

33.7153340407 ft.-118.31374525 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

26.0

31.5

42.8

43.5

45.5

46.6

48.3

49.3

blebs, highly weathered, (Tma).

SANDSTONE: Low to high strength, gray-orange (10YR 7/4) to oliveblack (5Y 2/1), interbedded with silicious siltstone, laminated tothin-bedded; moderately weathered to slightly weathered, (Tma).

Note: Description based on poor sample recovery.

SILTSTONE: Very low strength, gray-orange (10YR 7/4) toyellowish-gray (5Y 8/1), scattered clayey siltstone to claystone seams,laminated to thin-bedded, bedding dipping at 20 to 50 degrees; veryclose to closely spaced low to high angle joints locally infilled withgypsum; moderately weathered to slighlty weathered, (Tma).

SANDSTONE: Very low to low strength, light olive gray (5Y 6/1), fine tomedium-grained; scattered gypsum infilled joints; slightly weathered tofresh, (Tma).

SILTSTONE: Low strength, light olive gray (5Y 6/1), silicious, massive;wide-spaced, iron-oxide stained fracture; slightly weathered to fresh,(Tma).

CLAYSTONE: Very low strength, light olive gray (5Y 6/1) and oliveblack (5Y 2/1), very thin-bedded; close spaced, slickensided joints withoffset bedding; cross-cut siltstone layers at 46.3 feet, fresh (Tma).

SANDSTONE: Very low strength, light olive gray (5Y 6/1), fine tomedium-grained, scattered syndepositionally disturbed layers ofclaystone and siltstone; scattered undulating iron-oxide stainedfractures; slightly weathered to fresh, (Tma).

SILTSTONE: Very low strength, light olive gray (5Y 6/1) and olive black(5Y 2/1), interbedded clayey siltstone and silicious siltstone, laminated

200/4"

50/6"

S-2

2S

-23

S-2

4

S-16

S-17

S-18

S-19

S-20

S-21

80

27

20

13

95

98

100

93

100




REV 3.1

3.5 in.AWJ

Automatic

LOG OF BORING B-1


November 2012 51-1-10052-021




FIG. C.2


Ele

v., f

t

Dep

th, f

t.

95

90

85

80

75



SOIL DESCRIPTION

30

35

40

45

30

35

40

45

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

:R

ev:

Log:

Sym

bol/

Ske

tch

131.2 ft.123.0 ft.

MSLN/A



Rock Core

33.7153340407 ft.-118.31374525 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

52.2

55.0

60.0

67.3

to thin-bedded, bedding dipping at about 10 degrees; scattered ashblebs; fresh, (Tma).

SANDSTONE: Very low strength, light olive gray (5Y 6/1), fine tocoarse-grained, locally interbedded with siltstone and claystone layersfrom 50 to 51 feet, horizontally bedded to locally syndepositionallydisturbed with rip up clasts and disturbed bedding, laminated tomedium bedded; scattered gypsum filled joints; fresh, (Tma).

SILTSTONE: Very low strength, light olive gray (5Y 6/1), and oliveblack (5Y 2/1), silicious, interbedded with clayey siltstone, laminated tothin-bedded; scattered narrow solution cavities with iron-oxide coatingsand gypsum crystals; close spaced, low to high angle joints withgypsum infilling, slightly weathered to fresh, (Tma).

SANDSTONE: Very low to low strength, light olive gray (5Y 6/1) andpale yellowish-brown (10YR 6/2), interbedded with irregular siltstonelayers; scattered gypsum filled joints; iron-oxide stained, slightlyweathered, (Tma).

- No core recovery between 60 and 67.3 feet.

- Drilled without sampling from 67.3 to 131.2 feet.

S-2

5S

-26

S-2

7*S

-28*

S-2

9*

67

1821

63

60

15

64

23

71

64

16

60

20

16

2324

23

31

33

64

100

8

34

0

0

0

0

0

0




REV 3.1

3.5 in.AWJ

Automatic

LOG OF BORING B-1


November 2012 51-1-10052-021




FIG. C.2


Ele

v., f

t

Dep

th, f

t.

70

65

60

55

50



SOIL DESCRIPTION

55

60

65

70

55

60

65

70

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

:R

ev:

Log:

Sym

bol/

Ske

tch

131.2 ft.123.0 ft.

MSLN/A



Rock Core

33.7153340407 ft.-118.31374525 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

- Petroleum odor at approximately 75 feet (tar smell from tar bed) withtar pieces in cuttings.

- Driller noted that tar bed ended at about 80 feet.

262817

43

3028

18

24

1919

57

57

22

2076

15

59

40

5068

45

60

37

4221




REV 3.1

3.5 in.AWJ

Automatic

LOG OF BORING B-1


November 2012 51-1-10052-021




FIG. C.2


Ele

v., f

t

Dep

th, f

t.

45

40

35

30

25



SOIL DESCRIPTION

80

85

90

95

80

85

90

95

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

:R

ev:

Log:

Sym

bol/

Ske

tch

131.2 ft.123.0 ft.

MSLN/A



Rock Core

33.7153340407 ft.-118.31374525 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

- Cuttings became damp at about 109 feet.

- During short drilling delay at about 116 feet, water had accumulated inborehole.

Dur

ing

Dri

lling

45

18

40

21

131916

15

15

85




REV 3.1

3.5 in.AWJ

Automatic

LOG OF BORING B-1


November 2012 51-1-10052-021




FIG. C.2


Ele

v., f

t

Dep

th, f

t.

20

15

10

5

0



SOIL DESCRIPTION

105

110

115

120

105

110

115

120

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

:R

ev:

Log:

Sym

bol/

Ske

tch

131.2 ft.123.0 ft.

MSLN/A



Rock Core

33.7153340407 ft.-118.31374525 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

131.2BOTTOM OF BORINGCOMPLETED 11/29/2011

Notes -1) Borehole advanced to 67.3 feet deep using continuous CaliformiaModified Sampler and HQ rock coring methods.2) No core recovery at 60 to 67.3 feet deep.3) Borehole advanced from 67.3 feet to 131.2 feet deep using air rotarymethods. No samples were retrieved.4) After reaching the bottom of hole, the borehole was flushed byallowing groundwater to accumulate in borehole and then forcing thewater out by turing on air supply. The procedure was done 10+ times.After standing for 1 hour, water level in borehole was measured atabout 63.5 feet deep. The waterlevel in the borehole could not bemaintained above a depth of 44 feet during Acoustic Televiewerlogging.5) Hole was scanned with acoustic televiewer operated by Geovisionupon completion of drilling.

85

84

7417

1919

34




REV 3.1

3.5 in.AWJ

Automatic

LOG OF BORING B-1


November 2012 51-1-10052-021




FIG. C.2


Ele

v., f

t

Dep

th, f

t.

-5

-10

-15

-20

-25



SOIL DESCRIPTION

130

135

140

145

130

135

140

145

Dep

th, f

t




NOTES


Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

:R

ev:

Log:

Sym

bol/

Ske

tch

131.2 ft.123.0 ft.

MSLN/A



Rock Core

33.7153340407 ft.-118.31374525 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

0.5

4.5

6.6

7.9

16.5

18.5

Asphalt Paving

Note - Borehole was advanced to about 4.5 feet using mud rotarydrilling methods to allow for the insertion of the core barrel. Nosamples were collected.

Brownish gray (5YR 4/1) to mottled dark yellowish brown (10YR 4/2)and dark yellowish orange (10YR 6/6), clayey SILT to silty CLAY; moist;scattered clayey silt clasts, scattered to numerous nodules; (Qt) CL/ML.

CLAYEY SILTSTONE: Very low strength, mottled greenish gray (5GY6/1) and dark yellowish orange (10YR 6/6), completely weathered,(Tma).

SILTSTONE: Very low strength, moderate yellowish brown (10Yr 5/4)and dark yellowish brown (10YR 4/2) to dark yellowish orange (10YR6/6) and greenish gray (5GY 6/1), laminated to thin-bedded,interbedded with clayey siltstone and fine-grained sandstone, beddinghorizontal to dipping to 10 degrees, sandstone locally very low to lowstrength; medium to wide spaced fractures with iron-oxide coatings,moderately to highly weathered, (Tma).

SILICIOUS SILTSTONE: Low to medium high strength, light bluishgray (5B 7/1), interbedded with fine-grained sandstone; very closespaced, low to high angle irregular rough joints; slightly to moderatelyweathered, (Tma).

SILTSTONE: Very low to low strength, moderate yellowish brown(10Yr 5/4), pale yellowish brown (10YR 6/2) and greenish gray (5GY6/1), laminated to thin-bedded, interbedded with scattered clayeysiltstone and sandstone layers, bedding dipping at about 10 to 50degrees; very close to closely spaced fractures, locally infilled with taror gypsum; iron-oxide stained, highly weathered to slightly weathered,(Tma).

R-1

R-2

R-3

R-4

R-5

R-6

192218

17

9 7109 7998

1318

67

12141218

75129

0

68

52

70

70

80

0

88

0

56

30

96




REV 3.1

3.5 in.

LOG OF BORING B-7


November 2012 51-1-10052-021




FIG. C.3


Ele

v., f

t

Dep

th, f

t.

120

115

110

105

100



SOIL/ROCK DESCRIPTION

5

10

15

20

5

10

15

20

Dep

th, f

t




NOTES

* Sample Not RecoveredLEGEND


Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

:R

ev:

Log:

Sym

bol/

Ske

tch

117 ft.122.6 ft.

MSLN/A

Rock CoreGregg DrillingMobile B-53 Truck-MountedHole was reamed to 6

Rock Core

33.7148147179 ft.-118.311823625 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

41.1

42.8

-Gypsum fracture in fillings between 30 and 41 feet.

-Tar infilling in joints between 32 and 32.5 feet.

SANDSTONE: Very low strength, pale yellowish brown (10YR 6/2),fine-grained; highly fractured (closed) with tar infilling; sulfur;moderately weathered, (Tma).

SILTSTONE: Very low to low strength, medium gray (N5) and oliveblack (5Y 2/1), laminated to thin-bedded, interbedded with clayeysiltstone, sandstone, and scattered claystone layers, planar bedded tochaotic with clasts of siltstone and sandstone, bedding dipping at about30 to 60 degrees; very close to medium spaced, low to high angle jointswith numerous slickenside, scattered shear zones; iron-oxide stainingabove about 44 feet; slightly weathered to fresh, (Tma).-Shear at 45.5 feet.

-Slickensided shears between 48 and 62 feet.

R-7

R-8

R-9

R-1

0R

-11

42

69

14

64

40

121234

27

4125

7135662532

226755873 406053 34

59

2831

274127

55

54446943453355

3532

233438

6227

283337

464547

50

1676

60

90

44

100

60

96

78

98

50

88




REV 3.1

3.5 in.

LOG OF BORING B-7


November 2012 51-1-10052-021




FIG. C.3


Ele

v., f

t

Dep

th, f

t.

95

90

85

80

75




30

35

40

45

30

35

40

45

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

:R

ev:

Log:

Sym

bol/

Ske

tch

117 ft.122.6 ft.

MSLN/A


Rock Core

33.7148147179 ft.-118.311823625 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

64.4

66.7

69.6

74.3

-Disturbed zone at 62 to 62.5 feet.

SILICIOUS SILTSTONE: High strength, light brownish gray (5YR 6/1),laminated; bedding dipping at about 80 degrees; close spaced roughfractures; fresh, (Tma).

SILTSTONE: Very low to low strength; medium gray (N5) andbrownish black (5YR 2/1); chaotic (syndepositional) bedding with clayeysiltstone and fine to medium-grained sandstone; very close to mediumspaced fractures; fresh, (Tma).-Highly fractured zone at about 68.1 to 68.6 feet.

SANDSTONE: Very low to moderate strength, medium gray (N5),fine-grained, chaotic bedded with siltstone and clayey siltstone clasts ;very close to closely spaced fractures, scattered shear zones; fresh,(Tma).-Thin gouge zone at about 70.6 feet.

R-1

2R

-13

R-1

4R

-15

R-1

6

57555553

3754

44

79

634051

6285

614157

5860

3957703755

35

11

72

53

36

51

3743

46

13

595835

42

43

6150

70

100

36

86

60

88

68

92

36

60




REV 3.1

3.5 in.

LOG OF BORING B-7


November 2012 51-1-10052-021




FIG. C.3


Ele

v., f

t

Dep

th, f

t.

70

65

60

55

50




55

60

65

70

55

60

65

70

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

:R

ev:

Log:

Sym

bol/

Ske

tch

117 ft.122.6 ft.

MSLN/A


Rock Core

33.7148147179 ft.-118.311823625 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

92.0

95.2

99.2

SILTSTONE: Very low to low strength, brownish gray (5YR 4/1) andmedium gray (N5), laminated to thin-bedded, interbedded with clayeysiltstone and fine to medium-grained sandstone, planar beddingdipping at about 10 to 20 degrees to chaotic (syndepositional) beddingwith flame structures and clasts of sandstone and siltstone; very closeto medium spaced fractures locally with slickensides or striations;fresh, (Tma).

-Bentonite seam at 87.7 feet.

SANDSTONE: Very low to low strength, medium gray (N5) andbrownish gray (5YR 4/1), fine-grained, interbedded to mixed (chaotic)with siltstone; medium spaced joints; fresh, (Tma).

SILTSTONE: Very low to low strength, brownish gray (5YR 4/1) andmedium gray (N5), chaotic bedded with clayey siltstone and fine tomedium-grained sandstone; close to medium spaced fractures; fresh,(Tma).

R-1

7R

-18

R-1

9R

-20

R-2

1

43

72

77

1834

2318

17

1718

26

603156

6562

23

25

44

3532

4421

21

31

4611

20

39

336454

272431

86

96

84

100

44

98

92

96

60

100




REV 3.1

3.5 in.

LOG OF BORING B-7


November 2012 51-1-10052-021




FIG. C.3


Ele

v., f

t

Dep

th, f

t.

45

40

35

30

25




80

85

90

95

80

85

90

95

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

:R

ev:

Log:

Sym

bol/

Ske

tch

117 ft.122.6 ft.

MSLN/A


Rock Core

33.7148147179 ft.-118.311823625 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

100.9

102.7

117.0

CLAYEY SILTSTONE: Very low strength, brownish gray (5YR 4/1),laminated to thin-bedded, bedding dipping at about 20 degrees; closespaced fractures; fresh, (Tma).

SILICIOUS SILTSTONE: Low to medium high strength, light brownishgray (5YR 6/1), laminated, dipping at about 20 degrees, very closelyspaced fractures locally coated with tar; fresh, (Tma).

SILTSTONE: Very low to low strength, brownish gray (5YR 4/1) andmedium gray (N5), laminated to thin-bedded, bedding dipping at about20 degrees, bedding locally offset, interbedded with clayey siltstone andfine to medium-grained sandstone; very close to widely spacedfractures locally infilled with tar, locally striated; fresh, (Tma).

BOTTOM OF BORINGCOMPLETED 12/14/2011

Notes:

1)Hole was drilled using HQ3 rotary coring drilling methods to about117 feet deep.2)The borehole was inspected using an optical televiewer operated byGeovision.3)The borehole was then reamed to about 6 inches diameter to 118feet using mud rotary drilling methods with 2 sizes of tri-cone bits toallow installation of 3.34 inch O.D. inclinometer casing.

R-2

2R

-23

R-2

5

R-24

73364955

222566222424

216621

2926

75255223

21272525

25

2525

26

24

2224

22

225623226322

69

6521

21

44

88

76

98

100

20

100




REV 3.1

3.5 in.

LOG OF BORING B-7


November 2012 51-1-10052-021




FIG. C.3


Ele

v., f

t

Dep

th, f

t.

20

15

10

5

0




105

110

115

120

105

110

115

120

Dep

th, f

t




NOTES


Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

:R

ev:

Log:

Sym

bol/

Ske

tch

117 ft.122.6 ft.

MSLN/A


Rock Core

33.7148147179 ft.-118.311823625 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

5.5

6.8

8.8

9.7

- Driller placed HWT casing to 5.5' without sampling to achieve seal formud.

SANDSTONE: Very low strength, medium bluish grey (5B 5/1) anddark yellow-brown (10 YR 4/2),fine to medium sand, clayey, (Tma).

- Grayish orange return ( 10 YR 7/4).

SILTSTONE: Very low strength, medium brown (5YR 4/4) grading topale yellowish brown, (Tma).- 8 to 9 degree bedding.- Oxidation to about 0.5" away from fractures.

- Light brown (5YR 5/6) bentonite seam from 8.3 to 8.4 feet.

SANDSTONE: Very low strength, medium brown (5 YR 4/4) to paleyellow brown (10 YR 6/2), fine to medium sand with siltstone rip ups,(Tma).

SILTSTONE: Very low strength, medium brown ( 5 YR 4/4), slightly finesandy with magnesium-oxide staining on fractures, very closely spacedfractures, thinly bedded to thickly laminated, (Tma).

- Grayish orange return ( 10 YR 7/4).

- Sandstone seams 11.5' to 11.7' and 11.9'-12.0'; medium brown (5 YR3/4) with grayish blue grains (5 PB 5/2).

- Sandstone seam 13.3'-13.7'.

- Highly fractured 14.1' to 14.8'.

S-1

S-2

16

100

0

86




REV 3

6 in.N/AN/A

LOG OF BORING B-10


November 2012 51-1-10052-021




FIG. C.4


Ele

v., f

t

Dep

th, f

t.

120

115

110




5

10

5

10

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

: JX

MR

ev: W

DN

Log:

WD

N

Sym

bol/

Ske

tch

130.5 ft.122.5 ft.

MSLN/A

HQ3Gregg DrillingFrasteSee notes on last page of log

Rock Core

1718734.89 ft.6466948.95 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

18.5

19.5

24.5

28.8

- Core loss from 14.8' to 15.5'.

- Highly fractured from 15.5' to 16.3'.

- 11 to 13 degree bedding.

- Sandstone seam from 17.2' to 17.3'.

SANDSTONE: Low strength, dark yellow-brown (10 YR 4/2) to darkyellow-orange (10 YR 6/6) with grayish blue grains of schist (5 PB 5/2),fine to medium grained, (Tma).

SILICIOUS SILTSTONE: Medium to high strength, interbedded with fineand fine to medium silicious sandstone seams (light gray, N7, tomedium light gray, N6), (Tma).

-Bedding increases to 30 to 35 degrees.

- Lost circulation between 21' and 22'. Return back at about 22', paleyellowish brown (10 YR 6/2).

- Abundant tar fracture infilling to 1/2" wide between 22.2' and 24.5'(Black N1).

- Sheared from 24.2' to 25.8'.

Clayey SILTSTONE to silty CLAYSTONE: Very low strength, darkyellowish orange (10 YR 6/6), abundant gouge-like fragments,becomes clayey at 25.2', abundant slickensides, (Tma).- Driller notes that formation 'drilled like butter' between 24.5' and 25.5'.

- Sandstone 25.7' to 26.1'.

- 8 to 11 degree bedding.- Siltstone is thickly to thinly laminated.- Calcite (2mm) infillings at 26.5'.

- Abundant sulfur infillings between 27.2' and 28.5'.- Sandstone seam, light olive gray (5Y 6/1)., fine sand, sulfur infillings27.4' to 27.7'.

- Sandstone seam, (pale yellow orange (10 YR 8/6), fine sand, sulfurinfillings 28.2' to 28.5'.

Clayey SILTSTONE to Fine Sandy SILTSTONE: low strength grayishbrown (5 YR 3/2), (Tma).

S-3

S-4

S-5

19

79

79

53

25

17

64

46

46

10

50

32

5146

62

4773

34 7862

28

52455246

13

39

1110

15

222461

0

100

32

98

24

88




REV 3

6 in.N/AN/A

LOG OF BORING B-10


November 2012 51-1-10052-021




FIG. C.4


Ele

v., f

t

Dep

th, f

t.

105

100

95




20

25

20

25

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

: JX

MR

ev: W

DN

Log:

WD

N

Sym

bol/

Ske

tch

130.5 ft.122.5 ft.

MSLN/A


Rock Core

1718734.89 ft.6466948.95 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

30.0

30.6

39.6

40.8

43.8

- at 29.8'.

- SILICIOUS SILTSTONE: Moderate strength, dusky brown (5 YR 2/2),slightly fine sandy, (Tma).

Clayey SILTSTONE: Low strength, dusky yellowish brown (10 YR 2/2),thin bedded to thickly laminated, scattered fine sandstone seams,(Tma).- Grayish orange return ( 10 YR 7/4).- 9 to 11 degree bedding.

- Sandstone seam.

- 0.5" calcium carbonate infilling at 33.9'.- Alternating brownish black ( 5 YR 2/1) clayey siltstone and brownishgray (5 YR 4/1) fine sandy siltstone laminations.- Bedding steepens to 30 - 35 degrees.

- Undulating slickensided fracture at 35.3'.

- Fine sandstone seam, medium gray (N4) at 35.7'.

-Fine to medium silty sandstone seam.- Bedding change to 5 to 10 degrees below 36.5'.

- Fine sandstone seam, medium gray (N4) at 38.5'.

Fine to medium SANDSTONE: contorted texture with clayey siltstonerip-ups, (Tma).

SANDY SILTSTONE, SILTY SANDSTONE, and CLAYSTONE: Finegrained, medium light gray (N5), and olive black (5 yr 2/1), interbedded,(Tma).- Return color change to dark yellow brown (10 YR 4/2) at 41'.

SANDSTONE: Low strength, fine to medium, brownish black ( 5 YR2/1) with contorted fine sandy siltstone and clayey siltstone seams,(Tma).

S-6

S-7

S-8

67

14

99

1413

8

75 2220

11671012

13

76

146315541535

385050

2742

45

33

31

38

6857

688

987

797107054

11

31

112913

73

12

14

7

32

100

80

100

100

100




REV 3

6 in.N/AN/A

LOG OF BORING B-10


November 2012 51-1-10052-021




FIG. C.4


Ele

v., f

t

Dep

th, f

t.

90

85

80




35

40

35

40

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

: JX

MR

ev: W

DN

Log:

WD

N

Sym

bol/

Ske

tch

130.5 ft.122.5 ft.

MSLN/A


Rock Core

1718734.89 ft.6466948.95 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

46.8

49.0

50.2

50.8

52.4

55.3

56.8

58.0

- Siltstone rip-rap clasts below 45.3'.

- Gradational contact.

SANDY AND CLAYEY SILTSTONE AND SILTY SANDSTONE : Finegrained, (5 YR 2/1) and (5 B 5/1), interbedded, thin bedded to thicklylaminated, (Tma).- 8 to 10 degree bedding.

SANDSTONE: low strength, brownish black (5 YR 2/1), fine to mediumgrading to fine (medium bluish gray, 5 B 5/1), (Tma).

Clayey SILTSTONE: very low strength, brownish black (5 YR 2/1),(Tma).- Soft silty clay seam.

SILTSTONE: Low strength, brownish gray (5 YR 4/1) to olive gray (5 Y4/1), (Tma).

- Gradational contact.

SANDSTONE: Low strength, fine to medium with sandy clay coarsegrains increasing clay and silt toward bottom, (Tma).

Clayey SILTSTONE: very low strength, brownish-gray (5 YR 4/1) toolive gray (5 Y 4/1), bedded to thickly laminated, (Tma).

SANDSTONE: Very low strength, intermixed fine to medium sandstonewith abundant claystone and siltstone rip-ups, highly fractured withslickensides, (Tma).

SILTSTONE: Interbedded brownish black (5 YR 2/1) clayey siltstoneand medium light gray (N6) silty fine sandstone, contorted texture,(Tma).

S-9

S-1

0S

-11

35

19

64

8

10

10

9

11 38

11

791114

28

11

99

13

61

9

17

5050

62

4357

7544

6686148

99

476862

61

52

76595558

92

100

72

100

46

100




REV 3

6 in.N/AN/A

LOG OF BORING B-10


November 2012 51-1-10052-021




FIG. C.4


Ele

v., f

t

Dep

th, f

t.

75

70

65




50

55

50

55

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

: JX

MR

ev: W

DN

Log:

WD

N

Sym

bol/

Ske

tch

130.5 ft.122.5 ft.

MSLN/A


Rock Core

1718734.89 ft.6466948.95 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

64.5

65.8

- Sandstone seam, light gray (N7) 59.8'.- Soft silty CLAY seam from 59.8' to 60.8'.

- Fine to medium sandstone seam at 60.5'.

- Numerous slickensided fractures from 61.6' to 62.0'.

Clayey SILTSTONE: Very low strength, brownish black ( 5 YR 2/1),faintly laminated, extremely closely-spaced fractures with slickensides,(Tma).- 5 to 9 degree bedding.

SILTSTONE: Low strength, grayish brown (5 YR 3/2) and dusky brown(5 YR 2/2), thinly bedded to thickly laminated, scattered fine sandstoneseams, locally clayey, (Tma).- Bedding changes to 18 to 22 degrees.

- Sandstone pocket at (medium light gray, N6) 68.2'.

- Bedding change to 5 to 9 degrees.

- Sandy seam with medium sand schist grains (medium light gray, N6),at 71.5'.

S-1

2S

-13

S-1

4

54

55325167

63

26

3462

834544

5

70

383366393947

18

13

17

14

15

65

63 355736

74

522362 11

5937583641 6215

10

47212420501111

36

96

82

104

74

100




REV 3

6 in.N/AN/A

LOG OF BORING B-10


November 2012 51-1-10052-021




FIG. C.4


Ele

v., f

t

Dep

th, f

t.

60

55

50




65

70

65

70

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

: JX

MR

ev: W

DN

Log:

WD

N

Sym

bol/

Ske

tch

130.5 ft.122.5 ft.

MSLN/A


Rock Core

1718734.89 ft.6466948.95 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

80.3

85.2

89.0

- Fine sandstone seam, medium light gray (N7-N6) at 76'.

-Massive with very faint bedding between 77.5' and 79.5'.

- Odd rip-up sedimentary texture at 80'.

SANDSTONE: low strength, light olive gray (5 Y 6/1), fine sand,abundant brownish gray (5 YR 4/1) silty rip-ups, (Tma).

- Contorted texture (depositional?) below 83.5'.

SILTSTONE: low strength, olive gray (5Y 4/1) to olive black (5 Y 2/1),thickly laminated, scattered sandstone laminae, (Tma).

- High angle fractures (80 degrees) extend through core from 86.35' to88.2'.

SICILCIOUS SILTSTONE: Medium strength, brownish-gray (5 YR 4/1)to olive-gray (5 Y 4/1), thickly laminated, scattered pinkish gray (5 YR8/1) nodules, (Tma).

S-1

5S

-16

S-1

7

38

478

4

3

38

85

44

512533

23

29

58

71

90

100

100

100

52

100




REV 3

6 in.N/AN/A

LOG OF BORING B-10


November 2012 51-1-10052-021




FIG. C.4


Ele

v., f

t

Dep

th, f

t.

45

40

35




80

85

80

85

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

: JX

MR

ev: W

DN

Log:

WD

N

Sym

bol/

Ske

tch

130.5 ft.122.5 ft.

MSLN/A


Rock Core

1718734.89 ft.6466948.95 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

91.0

100.5

102.2

104.0

SILTSTONE: low strength, olive-gray (5 Y 4/1) to olive black (5 Y 2/1),thickly laminated, scattered light bluish gray (5B 7/1) sandy bentoniteseams, scattered pinkish-gray (5 YR 8/1) nodules, (Tma).

-Sandy bentonite seams, very low strength, at 92.3'.

-Sandy bentonite, very low strength at 92.8'.

-Sandy bentonite seam, very low strength, at 94.8'.

- Vertical, black, tar stringers between 96.2' and 97.0'.

- Black tar bleb at 98.3'.

- Sandy bentonite seam (medium light gray, N6), from 99.3' to 99.6'.

SILICIOUS SILTSTONE: Medium strength, light gray, abundant tarfracture fillings, (Tma).

- Bedding changes to 9 to 11 degrees.

SILTSTONE: Very low to low strength, olive gray (5 Y 4/1), clayey,thickly laminated, (Tma).- Silty CLAY gouge (tectonic?) from 102.6 to 102.8.- Lost circulation during drilling at 103.0 feet.

SILICIOUS SILTSTONE: Medium strength, abundant tar infilling, thicklylaminated, light gray (N7), (Tma).

Dur

ing

Dri

lling

S-1

8S

-19

S-2

0

19

9

10

644

14

81

85

46

5

45

2484651

7

3

53

3

43

93362

63

59

7329

73 4755776444

46

57

73585

74

100

98

100

68

100




REV 3

6 in.N/AN/A

LOG OF BORING B-10


November 2012 51-1-10052-021




FIG. C.4


Ele

v., f

t

Dep

th, f

t.

30

25

20




95

100

95

100

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

: JX

MR

ev: W

DN

Log:

WD

N

Sym

bol/

Ske

tch

130.5 ft.122.5 ft.

MSLN/A


Rock Core

1718734.89 ft.6466948.95 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

106.0

106.4

107.6

113.5

114.7

- Black tar nodule.

SILTSTONE: Low strength, brownish black (5 YR 2/1) to olive black (5Y 2/1), (Tma).- Bedding changes to 11 to 15 degrees.

SANDSTONE: Low strength, light olive gray (5 Y 6/1) to olive gray (5 Y4/1), normally graded, scattered rip-ups, (Tma).

SILTSTONE: Low strength, dusky brown (5 YR 2/2) to brownish black(5 YR 2/1), thin bedded to thickly laminated, scattered pinkish gray (5YR 8/1) blebs, (Tma).

-Sandstone seam at 109.6'.

-Sandstone seam at 111.3', medium gray (N5), fine grained.

-Sandstone seams between 112.7' and 113.2'.

- Soft sediment deformation below 113.2'.- Sharp contact.

SANDSTONE: Low strength, medium light gray (N6).

- Sharp contact.

SILTSTONE: Low strength, brownish gray (5 YR 4/1), scattered pinkishgray blebs (5 YR 8/1), scattered medium bluish gray (5 B 5/1) finesandstone thick laminae, (Tma).

- 8 to 12 degree bedding.

- Contorted bedding (soft sediment deformation) below 119.1'.

S-2

1S

-22

S-2

3S

-24

69

12699 8

79

65

80 101150

80

7

466228 34

6

109

1535

52

17

3018

21

23

14

912

8

10

1110

1349

11

89

100

61

100

100

100

96

100




REV 3

6 in.N/AN/A

LOG OF BORING B-10


November 2012 51-1-10052-021




FIG. C.4


Ele

v., f

t

Dep

th, f

t.

15

10

5




110

115

110

115

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

: JX

MR

ev: W

DN

Log:

WD

N

Sym

bol/

Ske

tch

130.5 ft.122.5 ft.

MSLN/A


Rock Core

1718734.89 ft.6466948.95 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

122.5

123.4

125.0

125.5

127.5

128.9

130.1

130.5

SILICIOUS SILTSTONE: Low to medium strength, (Tma).

SILTSTONE: Low trength, brownish gray (5 YR 4/1), (Tma).

SILICIOUS SILTSTONE: Low to medium strength brownish gray (5 YR4/1), (Tma).

SILTSTONE: Low strength, brownish gray (5 YR 4/1), (Tma).

- Circulation returned while drilling at 127.0'.

SANDSTONE: low strength , light bluish gray (5 B 7/1) fine sand,scattered brownish black laminae, scattered 70 to 80 degree healedfractures, (Tma).

Soft, medium bluish gray (5 B 5/1) sandy CLAY, bentonite,brownish-black laminae, undeformed with no slickensides; CH (Tma).

SILTSTONE: Low strength, brownish gray (5 YR 4/1) 3mm pyrite seamat top.BOTTOM OF BORINGCOMPLETED 7/18/2012Notes -1) Pushed casing to 5.5 feet. No sampling.2) Borehole advanced from 5.5 to 130.5 feet deep using HQ3 rockcoring methods.3) Packer testing performed in borehole during drilling at 72-85,87-100, 102-115, and 117-130 feet.4) Borehole water level, measured at completion of drilling, was 94.5feet bgs (7/18/12).5) Refer to groundwater report section for groundwater levels obtainedfrom vibrating wire piezometers.6) Geovision logged the hole using optical and acoustic televiewer, andinduction and gamming surveying upon completion of drilling.7)The borehole was reamed to about 6 inches diameter to 131 feetusing mud rotary drilling methods with 6 inch tri-cone bit to allow

S-2

5S

-26

36

42

1116

42 5933

18 1111

775

8

9

64

46

100

100

100

100




REV 3

6 in.N/AN/A

LOG OF BORING B-10


November 2012 51-1-10052-021




FIG. C.4


Ele

v., f

t

Dep

th, f

t.

0

-5

-10




125

130

125

130

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

: JX

MR

ev: W

DN

Log:

WD

N

Sym

bol/

Ske

tch

130.5 ft.122.5 ft.

MSLN/A


Rock Core

1718734.89 ft.6466948.95 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

installation of 3.34 inch O.D. inclinometer casing and three vibratingwire piezometers.




REV 3

6 in.N/AN/A

LOG OF BORING B-10


November 2012 51-1-10052-021




FIG. C.4


Ele

v., f

t

Dep

th, f

t.

-15

-20

-25




140

145

140

145

Dep

th, f

t




NOTES


Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

: JX

MR

ev: W

DN

Log:

WD

N

Sym

bol/

Ske

tch

130.5 ft.122.5 ft.

MSLN/A


Rock Core

1718734.89 ft.6466948.95 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

5.5

- Driller placed HWT casing to 5.5' without sampling to achieve seal forrotary drilling.

SILTSTONE: Very low strength, pale yellowish brown (10 YR 8/6) todark yellowish brown (10 YR 6/6) thinly bedded to thickly laminated,abundant magnesium oxide staining, fine sandy seams, clayey seams,(Tma).- Core loss from 5.5' to 6.0'.-Return is very pale orange (10 YR 8/2) to grayish orange (10 YR 7/4).

- Sandstone seams, fine to medium, clayey, light bluish gray (5 B 7/1)to medium bluish gray (5 B 5/1), between 9.5' and 10.1'.- Roots.

- Transition to medium yellow-brown (10 YR 5/4) to darkyellowish-brown (10 YR 6/6) at 10.8'.- 8 to 11 degree bedding.-Abundant bedding partings throughout.

-Sandstone seams, scattered light bluish gray grains, fine to medium,cross-bedded, at 12.3' and 13.0'.

S-1

S-2

8

84

1216

76

63

8

71

18

16

0

90

0

100




REV 3

6 in.N/AN/A

LOG OF BORING B-11


November 2012 51-1-10052-021




FIG. C.5


Ele

v., f

t

Dep

th, f

t.

120

115

110




5

10

5

10

Dep

th, f

t




NOTES



Dep

th, f

t

Blo

w C

ount

,(b

low

s/ft)

Gro

und

Wat

er

Sam

ples

Typ

: JX

MR

ev: W

DN

Log:

WD

N

Sym

bol/

Ske

tch

130.5 ft.121.3 ft.

MSLN/A


Rock Core

1718676.29 ft.6466971.24 ft.

N/AN/A

Atti

tude

RQ

D/

Rec

ove

ry, %

.

BU

CK

ET

_AU

GE

R_R

QD

51-

1-10

052

SA

N P

ED

RO

LA

ND

SLI

DE

.GP

J 5

1-1-

1005

2 S

AN

PE

DR

O L

AN

DS

LID

E.G

PJ

11/1

6/12

15.7

18.5

20.0

22.0

26.2

28.7

29.2

SANDSTONE: Very low strength, dark yellow-orange (10 YR 6/6) andlight bluish gray (5 B 7/1), fine to medium, (Tma).

-Brecciated and gouge zone with undulating slickensided fractures andsiltstone breccia fragment, between 16.7' and 17.9'.

SILTSTONE: Very low strength, pale brown (5 YR 5/2) to grayishbrown, (5 YR 3/2), (Tma).

- 60-degree fracture with clay gouge at 19.7'.

SILICIOUS SILTSTONE: Medium strength, pale yellowish-brown (10YR 6/2), magnesium oxide staining on fractures, (Tma).

- Loosing return fluid into formation at 21.0'.

SILTSTONE: Very low strength, moderate brown (5 YR 4/4), (Tma).- Return fluid loss stopped at approx. 22.0'.

-Clayey gouge zone intermixed with sandstone between 22.6' and 24.5'.

-Sandstone seam at 25.3'.-Shear zone between 25.5' and 25.9'.

SANDSTONE: Very low to low strength, dark yellowish orange (10 YR6/6) to grayish-brown (5 YR 3/2) fine sand, scattered silicious layers,(Tma).

-Fine to medium sandstone between 27.2' and 27.6'.

-Very soft clayey siltstone, sheared? between 27.7' and 28.7'.

SILICIOUS SANDSTONE: Moderate strength, fine grained, (Tma).

SANDSTONE: Very low strength, yellowish-gray (5 Y 7/2) to duskyyellow (5 Y 6/4), sulfur stringers and minor tar infillings, fine sand, thinlybedded to thickly laminated, (Tma).

S-3

S-4

S-5

78

6

74

13

1081375

4614

15

12

11

772683

39 4748

106

0

100

28

100

16

100




REV 3

6 in.N/AN/A

LOG OF BORING B-11


November 2012 51-1-10052-021




FIG. C.5


Ele

v., f

t

Dep

th, f

t.

105

100

95




20

25

20

25

Dep

th, f

t

1. Refer to KEY for explanation of symbols, codes, abbreviations and defini

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APPENDIX C SUBSURFACE EXPLORATIONS - Los Angeles Addendum-Appendix C.pdfThe triple-tube core barrel...

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