LLA_JFF_Upgrade_GDR_EntireDoc_20140716.pdf

FOR OFFICIAL USE ONLY

LOWER GRANITE LOCK AND DAM

Snake River

Juvenile Fish Facility Upgrade

November 2013

Geotechnical Data Report

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Lower Granite Lock and Dam Juvenile Fish Facility Upgrade i

LOWER GRANITE LOCK AND DAM

Juvenile Fish Facility Upgrade, Geotechical Data Report

TABLE OF CONTENTS

ACRONYMS & ABBREVIATIONS ................................................................................... ii LIST OF FIGURES ........................................................................................................... ii LIST OF APPENDIXES .................................................................................................... ii

1 INTRODUCTION

1.1 PURPOSE AND NEED

1.2 LOCATION

1.3 BACKGROUND

1.4 PLANNED FOUNDATIONS AND EXCAVATIONS

2 GEOLOGIC CONDITIONS

2.1 REGIONAL GEOLOGY

2.2 UPLAND SOILS

2.3 CATASTROPHIC FLOODS

2.4 SEISMIC SOURCES

2.1 SITE GEOLOGY

2.1.1 Local Geologic Conditions

2.1.2 Complex Bedrock Geology

2.1.3 Overburden Soils

3 GEOTECHNICAL CONDITIONS

3.1 FILE INFORMATION

3.2 RECENT EXPLORATIONS

3.3 LABORATORY TESTING

Lower Granite Lock and Dam Juvenile Fish Facility Upgrade ii

ACRONYMS AND ABBREVIATIONS

ASTM American Society for Testing and Materials CADD Computer Aided Design and Drafting

EIS Environmental Impact Statement EM Engineer Manual ft foot/feet ksi kips per square inch m meters psi pounds per square inch

USACE U.S. Army Corps of Engineers

LIST OF FIGURES

Figure 1 Site Plan Figure 2 Geologic Cross Section Figure 3 Generalized Stratigraphic Section at the Dam

LIST OF APPENDIXES

APPENDIX A Exploration Locations APPENDIX B Logs of Explorations APPENDIX C For Information Plans

1 INTRODUCTION

1.1 PURPOSE AND NEED

The purpose of this U.S. Army Corps of Engineers (Corps) Geotechnical Data Report (GDR) is to document geotechnical exploration information and subsurface conditions for design of the planned Juvenile Fish Facility Upgrade project at Lower Granite Lock and Dam.

1.2 LOCATION

Lower Granite Lock and Dam (the Project) is located at River Mile (RM) 107 on the Snake River, near Almota, Washington. The Project includes multiple systems to facilitate anadromous fish migration. Existing features include a fish ladder and counting, trapping, tagging, and handling facilities for adult fish migrating upstream.

There are also existing fish collection facilities integral to the dam, a removable spillway weir (RSW), and an existing Juvenile Fish Facility for collecting juvenile fish. The collected fish are diverted to a river outfall or to a barge for transport to a release site below Bonneville Dam.

The fish facility is identified on Figure 1, Site Plan. Multivolume Plan information is available showing planned improvements and existing site features.

1.3 BACKGROUND

Facility upgrades or modifications are expected to improve fish survival rates, which would help the Snake River hydropower system meet the requirements of the Endangered Species Act. Preliminary studies completed prior to 2010; a draft Engineering Design Report (EDR) completed in 2010; and an EDR Supplement report dated May 2012 all document fish facility upgrades and modifications to meet current design standards and facilitate implementation of current best practices.

1.4 PLANNED FOUNDATIONS AND EXCAVATIONS

Planned improvements include a fish transportation channel, a primary dewaterer, and fish transportation flume, all of which will be overhead. Most of the foundations will be reinforce concrete drilled shafts. While no shallow spread footing foundations are anticipated, some of the columns will be prefabricated steel elements.

Planned excavations include trenches for water supply pipes and for splicing new pipe to existing pipes. These excavations may be up to 10 feet in depth, in areas with existing buried utilities and the potential for encountering bedrock.

2 GEOLOGIC CONDITIONS

2.1 REGIONAL GEOLOGY

The Project is in the Columbia River Plateau Geologic Province. It is approximately 31 miles downstream of the confluence of the Snake and Clearwater Rivers. Pullman, Washington is the nearest population center; it is approximately 15 miles east-northeast of the Project.

The Columbia River Plateau Geologic Province is dominated by Columbia River flood basalts. During late Miocene and early Pliocene times (between 17 and 6 million years ago), repeated basaltic lava floods engulfed about 63,000 square miles of the Pacific Northwest. Regional topography and the mountains to the east and south forced lava flows west and north, to the interior of the existing Plateau. More than 300 high-volume individual lava flows have been identified, along with countless smaller flows. As the molten rock came to the surface, the earth’s crust gradually subsided into the space left by the rising lava. The subsidence of the crust produced a large, slightly depressed lava plain now known as the Columbia River Plateau.

Columbia River Basalts (CRB) are more than a mile in depth across the interior of the Plateau, with individual flows varying from less than 10 feet, to as much as 300 feet in thickness.

The ancient Columbia River was forced into its present course by northwesterly advancing lava.

Most of the Columbia River Basalt Group is tholeiitic, though some olivine basalt is present. Flow breccias and other contact characteristics such as pillow lavas, baked soil horizons, and interbed layers are used to distinguish stratigraphic and lithologic units.

The Snake River region of the Columbia River Basalt Group includes flows of the Imnaha, Grande Rhonde, Wanapum, and Saddle Mountain basalts. The flows are interbedded with, and are overlapped by Miocene to Pliocene terrigenous clastic and volcanic sediments along the plateau margins and in subbasins.

Older basement rocks that predate the CRB are visible in outcrops on the margins of the plateau and at isolated locations in deeply incised canyons within the plateau.

Basement rocks include sedimentary assemblages that were intruded and partially metamorphosed by a large igneous mass. Major structures that subsequently deformed the plateau lavas on a regional scale are the Yakima Fold Belt to the west and The Blue Mountain Anticline to the south.

The flows of the Columbia River Basalt Group were extruded through a series of north trending vents that were up to 90 miles in length. Older vents were probably buried by younger flows. These vents are preserved as dikes, most of which are in the southeast comer of Washington and the northeast corner of Oregon. The Project is in the heart of this area, which is designated as the “Chief Joseph Dike Swarm.”

2.2 UPLAND SOILS

Plestocene Era glacial activity and ice age weather combined to cap much of the Plateau with windblown silt (i.e. loess). The maximum thickness of loess is on the order of 200 feet around Pullman and Colfax, Washington. The loess deposit includes ash from Cascade Mountain volcanic activity.

2.3 CATASTROPHIC FLOODS

Missoula Floods were caused by the catastrophic failure of ice dams created by retreating glaciers. The largest of the floods – there were many – was caused by the retreat of a finger of the Cordilleran ice sheet that had crept southward into the Idaho panhandle, creating a large ice dam that blocked the mouth of the Clark Fork River.

Water in the drainage accumulated behind the ice dam, creating Lake Missoula, which was more than 2,000 feet deep and accounted for more than 500 cubic miles of water.

Weather patterns shifted, causing warming and glacial retreat, which led to failure of the ice dam. The failure resulted in catastrophic release of lake water that burst downstream, out of the mountains and spilled onto the Plateau.

The vast quantity of water, its depth, and its velocity stripped away hundreds of feet of soil and cut deep canyons into the underlying bedrock, which are visible today as coulees. Over time, multiple catastrophic flood events did much to shape present-day topography, which includes coulees, boulder fields, and large-scale ripples.

2.4 SEISMIC SOURCES

Three identified structural fault zones exist within a 20-mile radius of Lower Granite Dam. The Lewiston Fault Zone to the east is composed of a series of apparently east-west trending normal and reverse faults that extend laterally from the Uniontown Plateau southward to the present course of the Clearwater River. The relative movement along the fault zone helped create the high steep slopes that constitute the north side of the present Clearwater and Snake River Valleys and on which the Highway 95 Lewiston Grade is located. Maximum displacement along any fault within the zone is estimated at about 2,200 feet although there is no recorded evidence of movement since Quaternary time.

The Hite Fault System is a northeast-south west trending system of normal and strike-slip faults that extends from the North Fork of the Umatilla River east of Pendleton, Oregon, to Pomeroy, Washington. The fault is estimated to have a maximum displacement of about l,000 feet. There is no evidence of recent movement along the fault. Two small faults approximately on trend with the Hite Fault System were found north of Pomeroy. Stratigraphic expression of the faults places them at middle Miocene in age.

The Walla Walla area experienced an earthquake on July 15, 1936, which had an approximate Richter magnitude of 6. Movement on the nearby Wallula fault zone or the Hite fault may have caused the earthquake and associated aftershocks.

The Central Ferry Fault extends from a quarry east-northeast of Dodge, Washington (a ghost town on Hwy 127 South of Central Ferry) northward to the Snake River at Central Ferry and is projected to extend northward for a total distance of about 10 miles. The fault is expressed as a linear topographic depression and as notches in drainages and ridges. It is exposed in several road cuts over its course. A combination of normal and strike-slip movement appear to be characteristic of the fault. The age of last movement is undetermined but appears to be no later than Pleistocene.

2.1 SITE GEOLOGY

2.1.1 Local Geologic Conditions

Lower Granite Dam is at RM I07.5, where the Snake River canyon is approximately 1,600 feet deep and 13,200 feet wide. Surface geology in the immediate vicinity of the dam includes Shoreline deposits that comprise alluvial fan deposits (Qaf) and terrace gravels (Qgf) most likely deposited during high water events. The steep canyon walls are basalt flows of the upper Grande Ronde Formation (TygrN2 and TygrR2). Several feeder dikes for the Grande Ronde are exposed near the dam, particularly in the left abutment where a nearly vertical 80-foot wide dike that is nearly normal to the dam axis constitutes much of the abutment foundation. The upland areas are capped with eolian silt and fine sand with minor interbedded tephra. These soils are cultivated for dry-land wheat production.

The general rock stratigraphy at the Project consists of alternating layers of hard, fine grained, dense, dark gray basalt with scattered columnar jointing and soft to moderately hard, slightly to moderately red-stained and altered, vesicular to scoriaceous, highly porous flow basalt breccia. The layers vary in thickness from 50 to 150 feet. Generally, the flow breccias change gradually downward to vesicular and then dense, hard basalt.

Geologic cross section information is presented in Figures 2 and 3.

The proportion of basalt to flow breccia in a typical flow varies considerably, however, the dense basalt comprises the greater portion of the flow. The basalt flows at the Project generally dip less than 1 degree to the west and northwest and contain several flow-contact breccia layers. There are northwest-trending shear zones that transect the foundation area of the navigation lock and these have dips that vary from 30 degrees northeast and southwest to vertical. Several of these shear zones extend away from the dam and across the river.

2.1.2 Complex Bedrock Geology

Near each abutment, there are concrete structures of the dam founded on breccia.

Along the embankment sections of the dam, shell fill was constructed on terrace gravels and recent alluvium. However, most of the concrete of the dam, and all of the interior core and filter zones of the embankments were constructed on the rock unit below contact 16a, which is near Elevation 590 feet. This unit is part of the Grande Ronde Formation (TygrNl). It is hard, fine-grained, dense, gray to black, jointed basalt. This material is 60 to 100 feet in thickness.

The rock anticipated at foundation depths for the planned construction includes flow basalt and breccias layers between contacts 14 and 16a, which, near the left abutment, are between Elevation 710 and 590 feet. There is also a basalt dike at the left abutment. The dike is nearly vertical and its horizontal alignment is nearly perpendicular to the dam.

The multiple layers of flow basalts with breccia zones and the basalt dike contribute to complex bedrock geometry along the alignment. Weathering of near-surface rock introduces additional variability, though generally increasing the amount of fracturing and decreasing the overall strength of the rock mass. While all the bedrock at the site can be described as fractured basalt, strength properties, excavatability, difficulty of drilling, and geotechnical properties in general, will be variable.

The bedrock geology at the dam was summarized in a cross section, “Geologic section at Lower Granite Dam,” which is presented in Figure 2, Geologic Cross Section. The “Generalized Stratigraphic Section” in Figure 3 summarizes information for the various rock layers encountered during construction.

2.1.3 Overburden Soils

Along much of the alignment, especially downstream portions, the predominant overburden material is fill. The Foundation Report for the Dam indicates approximately 250,000 CY of “common materials” was excavated from foundation areas for construction of the Dam. These “mixed alluvial deposits and talus” materials were processed for use in concrete and gravel fills, leaving significant waste material and excess common material for use in fills.

Fill at the site can include materials from construction of the dam, including spalls and boulders from rock excavation, as well as some construction debris. Near the canyon walls, colluvium can be expected and this unsorted material can contain fine-grained soils from upland areas, as well as boulders of various sizes. Where overburden materials are terrace gravels and young alluvium, sorting will result in more uniform grain sizes, less variability in oversize materials, and probably less oversize materials overall.

3 GEOTECHNICAL CONDITIONS

3.1 FILE INFORMATION

Explorations for Lower Granite Lock and Dam were completed in phases during the decade prior to construction. There are explorations near the south abutment or along the south shore road from 1959 through 1970 for construction of the dam and the fish facilities. There are also several explorations that were completed more recently for various improvements or modifications since original construction. The locations of the explorations are shown on plan sheets in Appendix A. Logs of older explorations are in Appendix C.

3.2 RECENT EXPLORATIONS

Haz-Tech Drilling, Inc., of Meridian Idaho completed subcontracted drilling services at the Project between May 15 and June 1, 2013. A Dietrich D-25 truck-mounted drilling rig was used to drill 18 borings at the locations shown in Figure 3. Overburden soils were drilled using an 8 inch diameter hollow-stem auger (HSA) with standard penetration test (SPT) sampling. Where rock was encountered (at the surface at 5 locations) HQ rock coring equipment was used to advance the explorations to between 15 and 57 feet below ground surface. Locations of explorations are shown on plan sheets in Appendix A. Appendix B includes logs for the 2013 borings.

3.3 LABORATORY TESTING

Based on the soils encountered, no laboratory testing was completed on samples from the 2013 explorations. File information includes a substantial amount of gradation test data. However, that information is for material that was excavated and placed as fill or processed for use in concrete. The file information does not document the source of the fill materials at the site in a way that identifies which test data is applicable.

APPENDIX A

EXPLORATION LOCATIONS

APPENDIX B

LOGS OF EXPLORATIONS

3" asphalt concrete FILL: well graded gravel

BEGIN HQ CORING

Grand Ronde formation

45 min to core 5'-15' lost 50% of drilling water

20 min to core 15'-20'

3" Asphalt Concrete gray, damp, subangular, fine GRAVEL with sand gray, damp, subangular, fine GRAVEL with sand BASALT: mod strength (R3); gray; aphanitic; highly vesicular; very close-closely spaced, low-hi angle joints; slightly weathered

BASALT: med hi-hi strength (R4-R5); gray;

aphanitic; moderately-highly vesicular; mod close-closely spaced, low-hi angle joints; slightly weathered

BASALT: med high strength (R4); gray; aphanitic;

moderately-highly vesicular; closely spaced, mod-hi angle joints; slightly weathered

Bottom of borehole at 20.0 feet.

GP

GP

(12)

(88)

(77)

AU

SPT

SPT

RC

RC

RC

NOTES

LOGGED BY Dan Meier

DRILLING METHOD HSA 8" & HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 5/24/13 COMPLETED 5/24/13

GROUND WATER LEVELS:

HOLE DIAMETER: 8 inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF --

AFTER DRILLING --

AT END OF --

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BORING NUMBER 13_DH-01

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

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J US Army Corps of Engineers Walla Walla District 201 North 3rd Avenue Walla Walla, Washington 99362

GRAVEL; Breccia fragments

Grand Ronde Basalt

45 min to core 0'-6'

25 min to core 6'-11'

30 min to core 11'-15' poorly graded GRAVEL with some sand

BRECCIA: lo-mod strength (R2-R3); red-brown & gray; subangular-angular, coarse sand-cobble basalt frags in red-brown matrix; stepped, mod close to widely spaced joints; matrix graded to gray-brown at 5.5'

BRECCIA: lo-mod strength (R2-R3); red-brown & gray; subangular-angular, coarse sand-cobble basalt frags in gray-brown matrix; stepped, mod close to widely spaced joints

BRECCIA: lo-mod strength (R2-R3); red-brown & gray; subangular-angular, coarse sand-cobble basalt frags in gray-brown matrix; stepped, mod close to widely spaced joints

Bottom of borehole at 15.0 feet.

GP 58

(0)

(72)

(100)

(100)

HQ

HQ

HQ

HQ

NOTES

LOGGED BY Dan Meier

DRILLING METHOD HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 5/18/13 COMPLETED 5/18/13

GROUND WATER LEVELS:

HOLE DIAMETER: inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF --

AFTER DRILLING --

AT END OF --

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BORING NUMBER 13_DH-03

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

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Grand Ronde BasaltBRECCIA: gravel frag; very lo-lo strength (R1-R2)

BRECCIA: very lo-mod strength (R1-R3); red-brown & gray; subangular-angular coarse sand-cobble basalt frags in red-brown matrix; stepped, close-mod close spaced joints

BRECCIA: very lo-mod strength (R1-R3); red-brown & gray; subangular-angular coarse sand-cobble basalt frags in red-brown matrix; stepped, close-mod close spaced joints

BRECCIA: lo-mod strength (R2-R3); gray-brown & gray; subangular-angular coarse sand-cobble basalt frags in red-brown matrix; stepped, close-mod close spaced joints

Bottom of borehole at 15.0 feet.

(0)

(92)

(88)

HQ

HQ

HQ

HQ

NOTES

LOGGED BY Dan Meier

DRILLING METHOD HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 5/23/13 COMPLETED 5/23/13

GROUND WATER LEVELS:

HOLE DIAMETER: inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF --

AFTER DRILLING --

AT END OF --

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BORING NUMBER 13_DH-04

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

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J US Army Corps of Engineers Walla Walla District poorly graded GRAVEL with sand

GRAVEL

BRECCIA: very lo-mod strength (R1-R3); red-gray & gray; angular-subangular, coarse sand-cobble frags in red-gray matrix; weakly cemented; very close-close jointing; slightly weathered.

BRECCIA rubble; gray; subangular-angular gravel.

15" BRECCIA rubble; gray; subangular-angular gravel; weakly cemented overlying BRECCIA: very lo-mod strength (R1-R3); red-gray & gray; angular-subangular, coarse sand-cobble frags in red-gray matrix; weakly cemented; very close-close jointing;

slightly we BRECCIA: very lo-mod strength (R1-R3); red-gray & gray; angular-subangular, coarse sand-cobble frags in red-gray matrix; weakly cemented; very close-close jointing; slightly weathered.

BRECCIA: very lo-mod strength (R1-R3); red-gray & gray; angular-subangular, coarse sand-cobble frags in red-gray matrix; weakly cemented; very close-close jointing; slightly weathered.

BRECCIA: very lo-mod strength (R1-R3); red-gray & gray; angular-subangular, coarse sand-cobble frags in red-gray matrix; weakly cemented; very close-close jointing; slightly weathered.

Bottom of borehole at 15.0 feet.

GP 39

(0)

(0)

(0)

(0)

(39)

(0)

(56)

HQ

HQ

HQ

HQ

HQ

HQ

HQ

NOTES

LOGGED BY Dan Meier

DRILLING METHOD HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 5/23/13 COMPLETED 5/23/13

GROUND WATER LEVELS:

HOLE DIAMETER: inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF --

AFTER DRILLING --

AT END OF --

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BORING NUMBER 13_DH-05

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

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GRAVEL

BRECCIA: very lo-lo strength (R1-R2), red-brown& gray-brown, subangular-angular coarse sand-gravel frags in red-brown matrix, joints, weakly cemented, mod-hi weathered.

BRECCIA: lo-mod strength (R2-R3), red-brown & gray-brown, subangular-angular coarse sand-gravel frags in red-brown matrix, mod-cemented, mod weathered.

BRECCIA: lo-mod strength (R2-R3), red-brown & gray-brown, subangular-angular coarse sand-gravel frags in red-brown matrix, mod-cemented, mod weathered.

BRECCIA: lo-mod strength (R2-R3), red-brown & gray-brown, subangular-angular coarse sand-gravel frags in red-brown matrix, mod-strongly cemented, mod weathered.

Bottom of borehole at 15.0 feet.

GP 28

(0)

(0)

(58)

(67)

(83)

HQ

HQ

HQ

HQ

HQ

NOTES

LOGGED BY Dan Meier

DRILLING METHOD HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED COMPLETED

GROUND WATER LEVELS:

HOLE DIAMETER: inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF --

AFTER DRILLING --

AT END OF --

D E

P T

H (f t)

E

LE

V A

T

IO

N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-06

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

E

_E X

P

LO

R A

T

IO

N S

.G P

J US Army Corps of Engineers Walla Walla District

GRAVEL

GRAVEL

GRAVEL

BRECCIA; lo-mod strength (R2-R3), red-brown & gray, subangular-angular coarse sand-cobbles frags in red-brown matrix, mod-strongly cemented, slightly weathered.

BRECCIA; lo-mod strength (R2-R3), red-brown & gray, subangular-angular coarse sand-cobbles frags in red-brown matrix, mod-strongly cemented, slightly weathered.

BRECCIA; lo-mod strength (R2-R3), red-brown & gray, subangular-angular coarse sand-cobbles frags in red-brown matrix, mod-strongly cemented, slightly weathered.

BRECCIA; lo-mod strength (R2-R3), red-brown & gray, subangular-angular coarse sand-cobbles frags in red-brown matrix, mod-strongly cemented, slightly weathered.

18" BRECCIA overlying AUTO BRECCIATED BASALT: mod-med hi strength (R3-R4), gray & dark gray cobble frags in a gray matrix, closely spaced, mod-hi angle joints slightly weathered.

Bottom of borehole at 20.0 feet.

GP

GP

GP

(0)

(0)

(0)

(46)

(67)

(50)

(80)

HQ

HQ

HQ

3a

HQ

3b

HQ

HQ

HQ

HQ

NOTES

LOGGED BY Dan Meier

DRILLING METHOD HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 5/19/13 COMPLETED 5/19/13

GROUND WATER LEVELS:

HOLE DIAMETER: inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF --

AFTER DRILLING --

AT END OF --

D E

P T

H (f t)

E

LE

V A

T

IO

N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-07

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

E

_E X

P

LO

R A

T

IO

N S

.G P

J US Army Corps of Engineers Walla Walla District

Light brown, dry, fine sandy SILT subrounded to subangular

GRAVEL

BEGIN ROCK CORING

Grand Ronde Basalt

Light brown, dry, fine sandy SILT

Brown, dry, fine sandy, lo plastic SILT

Subrounded-subangular GRAVEL Subrounded-subangular GRAVEL BASALT: lo-mod strength (R2-R3), red-brown & gray, aphantic, very close jointing, slightly weathered.

BASALT: lo-mod strength (R2-R3), red-brown & gray, aphantic, very close jointing, slightly weathered.

BASALT: lo-mod strength (R2-R3), red-brown & gray, aphantic, very close jointing, slightly weathered.

BASALT: lo-mod strength (R2-R3), red-brown & gray, aphantic, very close jointing, slightly weathered.

Bottom of borehole at 15.0 feet.

ML

ML

GP

GP

1-2-3 (5)

5-5-7 (12)

(0) (0)

(0)

(0)

(0)

AU

SPT

SPT

AU

HQ

HQ

HQ

HQ

NOTES Dietrich D-25, serial Number 096

LOGGED BY Dan Meier

DRILLING METHOD HSA 8" & HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 5/20/13 COMPLETED 5/21/13

GROUND WATER LEVELS:

HOLE DIAMETER: inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF --

AFTER DRILLING --

AT END OF --

D E

P T

H (f t)

E

LE

V A

T

IO

N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-08

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

E

_E X

P

LO

R A

T

IO

N S

.G P

J US Army Corps of Engineers Walla Walla District organic SILT (Topsoil) sandy SILT with gravel, low plascity

SILT with fine sand and gravel damp, less gravel coarse gravel poorly graded, subangular GRAVEL with sand poorly graded fine SAND brown, dry, med plastic SILT brown, dry, fine SAND w/subangular gravel brown, damp, fine SAND w/ some subangular gravel brown, damp, fine SAND w/some subangular, coarse gravel gray-brown, damp, subangular GRAVEL w/sand brown, damp, fine SAND

Bottom of borehole at 16.5 feet.

ML

SP

SP

SP

GP

SP

19-29-50 (79)

12-19-34 (53)

10-14-17 (31)

5-18-15 (33)

15-16-10 (26)

9-20-23 (43)

SPT

SPT

SPT

SPT

SPT

SPT

NOTES

LOGGED BY Dan Meier

DRILLING METHOD HSA 8" & HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 5/24/13 COMPLETED 5/24/13

GROUND WATER LEVELS:

HOLE DIAMETER: inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF --

AFTER DRILLING --

AT END OF --

D E

P T

H (f t)

E

LE

V A

T

IO

N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-09

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

E

_E X

P

LO

R A

T

IO

N S

.G P

J US Army Corps of Engineers Walla Walla District poorly graded SAND w/ SILT poorly graded GRAVEL poorly graded SAND w/ GRAVEL poorly graded GRAVEL poorly graded SAND w/ SILT poorly graded SAND w/ GRAVEL

It appears all materials encountered in the boring may be brown, damp, fine SAND WITH SILT (low plasticity) bown, dry-damp, fine SAND with some angular coarse gravel gray, dry-damp, semi-angular coarse GRAVEL with fine sand brown, damp, fine SAND WITH SILT (low plasticity) red-brown, damp, fine SAND with subrounded to sub-angular gravel brown, damp, fine SAND with some angular gravel brown, damp, coarse SAND with some angular gravel

SP-

SM

SP

GP

SP-

SM

SP

SP

SP

4-2-5 (7)

10-23-43 (66)

7-7-10 (17)

10-10-8 (18)

11-15-13 (28)

14-18-30 (48)

SPT

SPT

SPT

SPT

SPT

SPT

SPT

NOTES

LOGGED BY Dan Meier

DRILLING METHOD HSA 8" & HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 6/1/13 COMPLETED 6/1/13

GROUND WATER LEVELS:

HOLE DIAMETER: 8 inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF 24

AFTER DRILLING --

AT END OF --

(Continued Next Page) printed: Nov 05, 2013

D E

P T

H (f t)

E

LE

V A

T

IO

N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-10

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

E

_E X

P

LO

R A

T

IO

N S

.G P

J US Army Corps of Engineers Walla Walla District

FILL

more gravel brown, damp, coarse SAND with some angular gravel (continued) brown, damp, fine SAND with some angular gravel br, moist-wet, fine SAND with gravel / sandy, coarse, angular GRAVEL

Bottom of borehole at 38.5 feet.

SP

SP/GP

AU

AU

D E

P T

H (f t)

E

LE

V A

T

IO

N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-10

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

E

_E X

P

LO

R A

T

IO

N S

.G P

J US Army Corps of Engineers Walla Walla District silty surface soils sand and gravel overburden soils brown, damp, SILT w/ trace fine sand gray-brown, damp, subrounded-subangular, fine-coarse poorly graded GRAVEL w/ fine sand gray-brown, damp, subrounded-subangular, fine-coarse well graded GRAVEL brown, damp, coarse SAND w/ fine-coarse gravel brown, damp, SILTY GRAVEL / gravelly, low plasticity SILT brown, damp, fine SAND brown, damp, low plasticity SILT brown, damp-wet, fine SAND brown, damp-wet, fine SAND with gravel brown, wet, fine-coarse SAND, with gravel

ML

GP

GW

SP

GM

SP

ML

SP

SP

SW

15-21-19 (40)

29-15-18 (33)

13-10-11 (21)

6-7-6 (13)

3-2-5 (7)

3-5-5 (10)

5-3-1 (4)

3-6-11 (17)

6-41-13 (54)

AU

SPT

SPT

SPT

SPT

SPT

SPT

SPT

SPT

SPT

NOTES

LOGGED BY Dan Meier

DRILLING METHOD HSA 8" & HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 5/16/13 COMPLETED 5/16/13

GROUND WATER LEVELS:

HOLE DIAMETER: 8 inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF --

AFTER DRILLING --

AT END OF --

(Continued Next Page) printed: Nov 05, 2013

D E

P T

H (f t)

E

LE

V A

T

IO

N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-11

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

E

_E X

P

LO

R A

T

IO

N S

.G P

J US Army Corps of Engineers Walla Walla District sounds like rock; 15 min to auger 37 to 38 feet

BEGIN ROCK CORING

Grand Ronde Basalt recovered sample includes 8" of rock with sand above - due to sample washout 50% water return; water is black brown-gray, wet, subangular-angular medium GRAVEL with sand brown, wet, subangular-angular, fine-course

GRAVEL (GP)

BRECCIA: highly fractured

BASALT: highly fractured, vertical fractures on bottom

Bottom of borehole at 48.5 feet.

GP

GP

11-10-21 (31)

10-22-33 (55)

(6)

(4)

SPT

SPT

HQ

HQ

D E

P T

H (f t)

E

LE

V A

T

IO

N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-11

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

E

_E X

P

LO

R A

T

IO

N S

.G P

J US Army Corps of Engineers Walla Walla District silty surface soils

Driller reports, "cobble layer" 8 to 10 feet drill cuttings subrounded

Driller reports, "broke through the cobble zone."

wet some small cobbles trace silt dark brown, damp, non-lo plastic SILT with fine sand brown, damp, subrounded-subangular med GRAVEL with sand brown, damp, SAND with subrounded-subangular gravel brown, damp, med SAND brown, damp, med, SAND brown, damp, med, SAND brown-gray, damp, subrounded-subangular, fine-coarse GRAVEL with sand brown, wet, rounded-subangular, fine-coarse

GRAVEL

brown, wet, rounded-subangular, fine-coarse

GRAVEL

ML

GW

SP

SP

SP

SP

GW

GW

GW

2-1-2 (3)

10-50

5-8-14 (22)

3-3-8 (11)

5-9-6 (15)

6-33-27 (60)

9-11-11 (22)

15-25-21 (46)

8-22-14 (36)

SPT

SPT

SPT

SPT

SPT

SPT

SPT

SPT

SPT

NOTES

LOGGED BY Dan Meier

DRILLING METHOD HSA 8" & HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 5/15/13 COMPLETED 5/15/13

GROUND WATER LEVELS:

HOLE DIAMETER: inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF 20.1

AFTER DRILLING --

AT END OF 21.4

(Continued Next Page) printed: Nov 05, 2013

D E

P T

H (f t)

E

LE

V A

T

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N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-12

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

E

_E X

P

LO

R A

T

IO

N S

.G P

J US Army Corps of Engineers Walla Walla District

"drill chatter;" 30 min to advance 5'

30 min to advance 5'

BEGIN ROCK CORING

brown, wet, subangular-angular, fine-coarse

GRAVEL

brown, wet coarse SAND with angular coarse gravel

BASALT: highly fractured

BASALT: highly fractured

Bottom of borehole at 50.0 feet.

GW

SW

21-18-35 (53)

11-50

(33)

(26)

SPT

SPT

HQ

HQ

D E

P T

H (f t)

E

LE

V A

T

IO

N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-12

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

E

_E X

P

LO

R A

T

IO

N S

.G P

J US Army Corps of Engineers Walla Walla District

2" Asphalt Concrete FILL: sandy GRAVEL with some silt buried native soil sample material is angular broken stone that appears similar to crushed rock gray & red-brown, damp, subrounded-angular, fine-coarse GRAVEL gray & red-brown, damp, subrounded-angular, fine-coarse GRAVEL gray & red-brown, damp, subrounded-angular, fine-coarse GRAVEL gray, damp-wet, subrounded-angular, fine-coarse

GRAVEL

gray, damp-wet, subrounded-angular, fine-coarse

GRAVEL

gray, damp-wet, subrounded-angular, fine-coarse

GRAVEL

dark brown, damp, non-lo plastic SILT with subangular gravel broken stone brown, damp, fine SAND

GW

GW

GW

GW

GW

GW

ML

GP

SW

29-43-20 (63)

24-7-15 (22)

14-7-8 (15)

6-16-23 (39)

19-11-28 (39)

20-20-13 (33)

6-8-27 (35)

9-21-13 (34)

1-2-2 (4)

SPT

SPT

SPT

SPT

SPT

SPT

SPT

SPT

SPT

NOTES

LOGGED BY Dan Tucker

DRILLING METHOD HSA 8" & HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 5/29/13 COMPLETED 5/29/13

GROUND WATER LEVELS:

HOLE DIAMETER: inches

NORTHING: 400000 feet

GROUND ELEVATION: 650 feet

EASTING: 2800000 feet

AT TIME OF 24.2

AFTER DRILLING --

AT END OF --

(Continued Next Page) printed: Nov 05, 2013

D E

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H (f t)

E

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V A

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N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-13

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

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P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

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:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

E

_E X

P

LO

R A

T

IO

N S

.G P

J US Army Corps of Engineers Walla Walla District

BEGIN ROCK CORING

The drill bit and part of the core barrel broke off in the hole and were not recovered. Drilling action confirms coring in basalt bedrock.

brown, damp, med SAND brown, damp, medium SAND gray, wet subangular-angular, fine-coarse GRAVEL with sand

Bottom of borehole at 49.0 feet.

SW

SW

GW

2-2-2 (4)

4-3-5 (8)

36-25-23 (48)

SPT

SPT

SPT

D E

P T

H (f t)

E

LE

V A

T

IO

N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-13

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

E

_E X

P

LO

R A

T

IO

N S

.G P

J US Army Corps of Engineers Walla Walla District

FILL: poorly graded SAND medium to coarse GRAVEL: may be fill brown, damp, med SAND brown, damp, med SAND gray, damp, subangular-angular, fine-coarse GRAVEL with red sand red-brown & gray, damp, subrounded-angular, fine-coarse GRAVEL reb-brown, damp, rounded-subangular, fine-coarse

GRAVEL

gray, damp, subangular-angular, fine-coarse

GRAVEL

dark gray, wet, angular coarse GRAVEL dark gray, wet subangular-angular, med GRAVEL

SP

SP

GW

GW

GW

GW

GP

GM

9-24-20 (44)

4-7-3 (10)

10-12-35 (47)

14-23-38 (61)

18-22-28 (50)

12-18-22 (40)

8-11-17 (28)

8-8-36 (44)

SPT

SPT

SPT

SPT

SPT

SPT

SPT

SPT

NOTES

LOGGED BY Dan Meier

DRILLING METHOD HSA 8" & HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 5/30/13 COMPLETED 5/30/13

GROUND WATER LEVELS:

HOLE DIAMETER: inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF --

AFTER DRILLING --

AT END OF --

(Continued Next Page) printed: Nov 05, 2013

D E

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H (f t)

E

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V A

T

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N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

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S (N

V A

LU

E

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C O

V E

R Y

(R

Q D

S A

M P

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ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-14

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

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_E X

P

LO

R A

T

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N S

.G P

J US Army Corps of Engineers Walla Walla District buried native SAND

No water return.

800 gal water used for coring

Grand Ronde Basalt dark gray, wet, angular coarse GRAVEL brown-gray, wet, fine-med SAND with gravel dark gray and blue stone fragments: BOULDERS and GRAVEL rounded stones and pebbles of different colors:

BOULDERS and GRAVEL rounded stones and pebbles of different colors:

BOULDERS and GRAVEL

...need data

...need data

Bottom of borehole at 57.0 feet.

GM

SW

5-9-11 (20)

5-19-28 (47)

(13)

(52)

(33)

SPT

SPT

HQ

HQ

HQ

HQ

HQ

D E

P T

H (f t)

E

LE

V A

T

IO

N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-14

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

E

_E X

P

LO

R A

T

IO

N S

.G P

J US Army Corps of Engineers Walla Walla District

FILL: surficial SAND soils

Top 6 inches of sample at 7.5 ft is sand and gravel, the bottom 6 inches is all gravel.

FILL: alternating layers of well-graded and poorly graded

GRAVEL

buried native soils brown, dry, medium SAND with subrounded to angular, coarse gravel brown, dry, medium SAND with subrounded to angular, coarse gravel gray, dry, subangular to angular , coarse GRAVEL with medium-coarse sand gray, dry, subangular to angular , coarse GRAVEL brown-gray, dry, subangular-angular, coarse GRAVEL with sand brown, dry, gravelly SILT brown, wet, sandy SILT brown, wet SAND

SW

SW

GW

GP

GW

ML

ML

SP

15-15-16 (31)

5-6-5 (11)

10-14-14 (28)

14-25-14 (39)

23-41-30 (71)

7-12-9 (21)

3-15-11 (26)

9-5-47 (52)

SPT

SPT

SPT

SPT

SPT

SPT

SPT

SPT

SPT

NOTES

LOGGED BY Dan Meier

DRILLING METHOD HSA 8" & HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 5/31/13 COMPLETED 5/31/13

GROUND WATER LEVELS:

HOLE DIAMETER: inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF 20.1

AFTER DRILLING --

AT END OF --

(Continued Next Page) printed: Nov 05, 2013

D E

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H (f t)

E

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V A

T

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N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

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ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-15

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

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C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

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:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

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_E X

P

LO

R A

T

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N S

.G P

J US Army Corps of Engineers Walla Walla District

No water return

600 gal water used for coring brown-gray, damp SAND red-brown, damp SAND gray, subrounded, subangular, coarse GRAVEL with COBBLES: alluvium gray, subrounded, subangular, coarse GRAVEL with COBBLES: alluvium gray, subrounded, subangular, coarse GRAVEL with COBBLES: alluvium

BASALT: need data

BASALT: need data

Bottom of borehole at 53.0 feet.

SP

SP

4-9-8 (17)

9-21-50 (71)

(19)

(28)

SPT

SPT

HQ

HQ

HQ

HQ

HQ

D E

P T

H (f t)

E

LE

V A

T

IO

N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-15

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

E

_E X

P

LO

R A

T

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N S

.G P

J US Army Corps of Engineers Walla Walla District

FILL: surficial SAND exploration relocated 4' southeast of target for access

FILL: layers of GRAVEL driller indicated traces of clay buried native SILT soils native SAND soils sampler & rods settled under own weight brown, damp, fine SAND with subrounded-subangular coarse gravel brown, damp, fine SAND with subrounded-subangular coarse gravel red-brown, dry-damp, subangular-angular, fine GRAVEL with sand brown, damp, subrounded-subangular GRAVEL with sand brown, damp, subrounded-subangular GRAVEL with sand brown, damp, subangular GRAVEL with silt brown, damp, gravelly, medium plastic SILT brown, damp, fine-medium SAND brown, wet, fine-medium SAND

SP

SP

GP

GP

GP

GP-

GM

ML

SP

SP

16-18-13 (31)

9-18-22 (40)

11-13-12 (25)

18-22-24 (46)

20-24-18 (42)

6-4-5 (9)

2-0-1 (1)

9-3-4 (7)

0-1-2 (3)

SPT

SPT

SPT

SPT

SPT

SPT

SPT

SPT

SPT

NOTES

LOGGED BY Dan Meier

DRILLING METHOD HSA 8" & HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 5/31/13 COMPLETED 5/31/13

GROUND WATER LEVELS:

HOLE DIAMETER: inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF 19.7

AFTER DRILLING --

AT END OF --

(Continued Next Page) printed: Nov 05, 2013

D E

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E

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V A

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N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

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ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-16

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

D

3_

LO

W

E R

_G R

A N

IT

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_E X

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N S

.G P

J US Army Corps of Engineers Walla Walla District

No water return clay weathering product in Breccia

3" clay seam at 46.5 ft brown, wet, fine-medium SAND gray, damp-wet, medium SAND with subangular gravel BRECCIA; medium high to high strength (R?), gray, closely spaced joints

2' BRECCIA (moderate strength (R?), gray, fragments of basalt in fine-grained matrix) overlying BASALT (medium strength (R?), gray, fractured

(RQD = ?))

2' massive BASALT overlying 3" clay layer overlying highly fractured BASALT

Bottom of borehole at 47.0 feet.

SP

SP

0-9-6 (15)

23-50

SPT

SPT

HQ

HQ

HQ

D E

P T

H (f t)

E

LE

V A

T

IO

N (f t)

REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

G R

O U

N D

W A

T E

R D

E P

T H ft)

G R

A P

H

IC

L O

G

U S

C S

C

LA

S S

IF

IC

A T

IO

N

B

LO

W C

O U

N T

S (N

V A

LU

E

R E

C O

V E

R Y

(R

Q D

S A

M P

LE

ID

E N

T

IF

IC

A

T

IO

N

BORING NUMBER 13_DH-16

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

D O

T S

T Y

LE

W

IT

H

P E

R -S

A M

P

LE

S O

IL

D

E S

C

B A

S

IC

C O

R E

P R

O

JE

C T

_R E

V _2

-5 -2

0_

.G D

T

1/

5/

:5

N

:\E C

-D \E

C -D

-G T

\G

IN

T \D

A T

A F

IL

E

S \L

O W

E R

G R

A N

IT

E

\2

1_

O R

IG

IN

A L

_A N

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3_

LO

W

E R

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A N

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J US Army Corps of Engineers Walla Walla District

FILL: vesicular basalt GRAVEL fines washed away

Grand Ronde Basalt poorly graded GRAVEL: subangular-angular gravel-sized fragments of vesicular basalt BRECCIA: red-brown and gray, low-moderate strength (R2-R3) subangular-angular, coarse sand-to gravel-size fragments of vesicular basalt; with cobble- to small boulder-sized fragments of auto-brecciated basalt basalt fragments are in a red-brown, fine-grained matrix; joints are moderately to closely spaced at 30 to 60 degree angle in cobble/boulder clasts; slightly weathered, strongly cemented

Bottom of borehole at 20.0 feet.

GP 89

(27)

(55)

(0)

(50)

(72)

HQ

HQ

HQ

HQ

HQ

HQ

NOTES

LOGGED BY Dan Meier

DRILLING METHOD HSA 8" & HQ Core

DRILLING CONTRACTOR Haz Tech

CHECKED BY JMGent

DATE STARTED 5/19/13 COMPLETED 5/19/13

GROUND WATER LEVELS:

HOLE DIAMETER: inches

NORTHING: 400000 feet

GROUND ELEVATION: 1000 feet

EASTING: 2800000 feet

AT TIME OF --

AFTER DRILLING --

AT END OF --

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REMARKS & INTERPRETATIONSAMPLE DESCRIPTION

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BORING NUMBER 13_DH-17

CLIENT Lower Granite

PROJECT NUMBER 372857

PROJECT NAME LLA - Exploration

PROJECT LOCATION Clarkston, ID

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J US Army Corps of Engineers Walla Walla District

FILL: vesicular basalt GRAVEL

Undulating, rough, closely spaced moderate (30-50 degree) angle joints, occasional zones with white secondary mineral cementation and infilling.

cementation varies weak to strong

15.5 to 17.5 feet: strongly cemented with undulating, rough, closely spaced moderate (30-50 degree) angle joints subangular-angular gravel-sized fragments of vesicular basalt: GRAVEL

BRECCIA: red-gray, low-moderate strength (R2-R3) subangular-angular, coarse sand- to gravel-size fragments of vesicular-scoriaceous basalt in a red-brown matrix of fine-grained weathering products

BRECCIA: red-gray, low-moderate strength (R2-R3) subangular-angular, coarse sand- to gravel-size fragments of vesicular-scoriaceous basalt in a red-brown matrix of fine-grained weathering products

BRECCIA: red-gray, low-moderate strength (R2-R3) subangular-angular, coarse sand- to gravel-size fragments of vesicular-scoriaceous basalt in a red-brown matrix of fine-grained weathering products BRECCIA: red-gray, low-moderate strength (R2-R3) subangular-angular, coarse sand- to gravel-size fragments of vesicular-scoriaceous basalt in a red-brown matrix of fine-grained weathering products

BRECCIA: red-gray, low-moderate strength (R2-R3) subangular-angular, coarse sand- to gravel-size fragments of…