W912PL19R0011_Amendment0001_Part4.pdf

Preliminary Geotechnical Report

AJO-CAG IFT Geotech Report (12-17-2014).docx

APPENDIX A -

BORING AND TEST PIT LOGS

A-1 AJO-CAG IFT Geotech Report (12-17-2014).docx

APPENDIX A

BORING AND TEST PIT LOGS

A.1 General

Prior to working on-site, Diaz•Yourman-GeoPentech-Kinnetic Laboratories (DY-GP-KL) personnel and subcontractor’s personnel were approved for working on-site by both U.S.

Customs and Border Protection Service (CBP) and the Tohono O’odham Nation (T.O.N.).

During field operations, DY-GP-KL personnel and subcontractor’s personnel were escorted, assisted, and monitored by CBP agents, CBP environmental and cultural monitors, off-duty

T.O.N. Police retained by DY-GP-KL for security, and T.O.N. cultural monitors.

Prior to performing the field exploration, the field exploration locations were marked in the field and Blue Stake Inc. in Arizona was notified.

The field exploration for the proposed project consisted of drilling 24 borings to depths ranging from approximately 11 to 72 feet, as summarized in Table A1. A total of 23 test pits were completed at various locations along the Integrated Fixed Tower (IFT) site access roads, as summarized in Table A2. The test pits were excavated and logged to depths ranging between approximately 2 to 10 feet.

The boring and test pit latitudes and longitudes were identified in the field by measuring from known locations using a hand-held global positioning system (GPS) unit. The boring and test pit elevations were estimated using Google Earth.

A-2 AJO-CAG IFT Geotech Report (12-17-2014).docx

Table A1 - Boring Summary

IFT Site Boring ID Exploration Depth (feet) Elevation Latitude Longitude Easting Northing

AJ0-0446 AJO-446 21.5 1925 31.76729 -112.25823 593852 279253

AJ0-0448

AJO-448A 71.5 1685 31.77220 -112.41955 543727 281233

AJO-448B 71.3 1655 31.77218 -112.41948 543749 281226

AJ0-0450 AJO-450 21.5 1956 31.80853 -112.54182 505807 294646

AJ0-0452

AJO-452A 71.5 2000 31.92701 -112.57491 495789 337806

AJO-452B 72.5 2000 31.92693 -112.57495 495777 337777

AJ0-0454 AJO-454 71.5 2127 31.97155 -112.58220 493627 354022

AJ0-0458 AJO-458 70.3 2220 32.11803 -112.63398 477924 407412

AJ0-0460

AJO-460A 71.5 2053 32.15724 -112.69314 459712 421802

AJO-460B 71.5 2046 32.15720 -112.69310 459724 421787

AJ0-0462 AJO-462 70.9 2297 32.05266 -112.61358 484087 383589

CAG-0430 CAG-430 71.0 2910 31.57300 -111.68510 772112 208490

CAG-0432

CAG-432A 45.0 2523 31.58360 -111.77075 745434 212300

CAG-432B 71.3 2523 31.58335 -111.77068 745456 212209

CAG-0434

CAG-434A 71.3 2567 31.61818 -111.83901 724170 224856

CAG-434B 70.9 2568 31.61813 -111.83887 724214 224838

CAG-0436 CAG-436 71.5 2471 31.65740 -111.91180 701513 239114

CAG-0438 CAG-438 70.3 2452 31.65099 -111.99035 677072 236790

CAG-0440

CAG-440A 71.5 2351 31.67309 -112.04959 658649 244846

CAG-440B 71.4 2351 31.67319 -112.04975 658599 244883

CAG-0442 CAG-442 71.5 2097 31.73492 -112.11468 638441 267367

CAG-0444

CAG-444A 32.0 2724 31.62076 -111.90465 703739 225786

CAG-444B 42.0 2724 31.62067 -111.90476 703705 225754

Vamori Wash CAG-VM Wash 1 11.5 31.55866 -111.78248 741793 203223 Note: Northings and eastings are in Arizona State Plane coordinates (feet), North American Data (NAD) 83.

A-3 AJO-CAG IFT Geotech Report (12-17-2014).docx

Table A2 – TEST PIT SUMMARY

IFT Site Test Pit ID Exploration Depth (feet) Latitude Longitude Easting Northing

AJO-0460

AJO-TP1 3 32.16756 -112.66274 469144 425488

AJO-TP2 2.5 32.16337 -112.67757 464547 423998

AJO-0462 AJO-TP3 2.3 32.06018 -112.57910 494785 386259

AJO-0454 AJO-TP4 7 31.97373 -112.58211 493661 354814

AJO-0452

AJO-TP5 3 31.92305 -112.57234 496578 336361

AJO-TP6 10 31.91493 -112.56567 498629 333393

AJO-0450 AJO-TP7 3.5 31.80700 -112.54296 505450 294091

AJO-0446 AJO-TP8 3.5 31.76661 -112.25562 594664 279002

AJO-0448 AJO-TP9 10 31.77315 -112.42460 542161 281586

CAG-0440 to 0442 CAG-TP1 10 31.71952 -112.07650 650304 261746

CAG-0438 to

CAG-0440

CAG-TP2 10 31.64774 -112.03335 663689 235620

CAG-TP3 10 31.63616 -112.02767 665456 231407

CAG-0444 to

CAG-0438

CAG-TP4 10 31.60242 -111.89721 706055 219118

CAG-TP5 9.5 31.61248 -111.89944 705362 222775

CAG-0444 to 0436 CAG-TP6 10 31.65119 -111.91081 701821 236857

CAG-0434 to

CAG-0444

CAG-TP7 9.7 31.61139 -111.87184 713952 222381

CAG-TP8 10 31.61665 -111.86190 717046 224296

CAG-TP9 10 31.61925 -111.84930 720966 225242

San Miguel Rd. to

CAG-0434

CAG-TP10 9.5 31.58930 -111.83631 725019 214353

CAG-TP11 10.5 31.57728 -111.82190 729508 209985

CAG-TP12 9 31.55877 -111.78283 741683 203262

CAG-TP13 10 31.55853 -111.78219 741882 203174

CAG-0430 CAG-TP14 10 31.56609 -111.68183 773135 205979

Note: Northings and eastings are in Arizona State Plane Coordinates (feet), NAD 83.

A.2 Borings

Borings were drilled by Yellow Jacket Drilling between May 12, 2014, and June 17, 2014, with a track-mounted mobile CME-850 drill rig using hollow-stem-auger drilling techniques. A diamond core was used for the rock cores. Our field engineers and geologists observed the drilling operations and collected drive samples for visual examination and subsequent laboratory testing. Drive samples were collected with a 2.4-inch-inside-diameter (3.0-inch-outside-diameter) modified California split-barrel sampler lined with brass tubes and a standard split-spoon penetrometer with dimensions in accordance with ASTM International (ASTM) D3550 and D1586, respectively. Both samplers were driven with a 140-pound automatic trip hammer falling 30 inches. Based on communication with the drilling company, the hammer used during

A-4 AJO-CAG IFT Geotech Report (12-17-2014).docx the field exploration was last calculated on October 4, 2013; the efficiency rating (ER) was 65.2 percent.

The hammer blows required to drive the modified California sampler were converted to equivalent standard penetration test (SPT) N-values by multiplying by 0.65 (N = 0.65 x modified

California blows per foot). A sampler driving refusal criteria of 50 hammer blows for less than

6 inches of penetration for the modified California or SPT samplers was used. An equivalent

SPT blow count was then calculated by multiplying the sampler blow count (usually 50 blows) by the ratio of 6 inches divided by the actual sampler penetration in inches. If the modified

California sampler met driving refusal, then the prorated equivalent SPT blow count was further modified as noted above for samplers that did not meet sampler driving refusal. Borings were backfilled with soil cuttings. The cored portion of the borings was advanced using HQ-3 triple-barrel and wire line systems. Relatively undisturbed continuous core samples were collected approximately every 5 feet from the start of coring to total depth. Sampling occurred concurrently with core boring advancement. Once the inner core barrel was retrieved, the split tube containing the core sample was extruded from the inner core barrel using pressurized fresh water. One half of the split tube was subsequently removed, exposing the core sample. The sample was then transferred to an auxiliary split tube sleeve to be logged by the geologist. The borings were backfilled with cuttings.

Soils encountered in the borings were classified in general accordance with the ASTM Soil

Classification System (ASTM D2487, which is summarized on Plate A1, and D2488). Boring logs were prepared from visual examination of the samples, cuttings obtained during drilling operations, and results of laboratory tests.

Groundwater was not encountered in the borings except for CAG-VM Wash 1 in which groundwater was encountered at a depth of 6 feet below the ground surface.

A.3 Test Pits

Test pits were excavated by C.C. Construction Arizona between June 23, 2014 and June 26, 2014, with a Deere 410G backhoe. Our field engineer and geologist observed the test pit excavation cuttings from the ground surface. The test pit logs were prepared based on visual examination based on ASTM D2488. (Laboratory tests were not performed on test pit samples.)

The purpose of the test pits was to visually classify the soils, and determine depth of bedrock, if

A-5 AJO-CAG IFT Geotech Report (12-17-2014).docx encountered, to the depths explored. Test pits were backfilled with excavated material, and compacted with the backhoe.

Groundwater was encountered near a depth of 9 feet in Test Pit CAP-TP-12.

Modified California Sampler ring-lined split barrel (2.5-inch-I.D.)

TYPICAL SAMPLER GRAPHIC SYMBOLS

2 4

WELL GRADED SAND

with GRAVEL (SW)

SAND with SILTY CLAY and GRAVEL (SP-SC)

GRAVEL with SILT and

SAND (GP-GM)

R ec ov er y, (Fracture Frequency) The number of naturally occurring fractures in each foot of core; does not include mechanical breaks or healed fractures. "NA" = not applicable due to lack of core recovery; "?" = uncertain due to core condition.

SOIL SAMPLES

10 12 13 14 15 16

R Q D:

Fractures per Foot:

N um b er

COLUMN DESCRIPTIONS

D is co nt in ui ty D ra w in g

N um b er

B lo w s

/ 6 in

T yp e

D ril l T im e [R at e, ft /h r]

Comments and observations regarding drilling or sampling made by driller or field personnel. Lab tests are indicated using abbreviations explained below.

Number of blows to advance driven sampler each 6-inch drive interval, or distance noted, using a 140-lb hammer with a 30-inch drop (unless otherwise noted).

Sample Number:

Type of soil sample collected at depth interval shown; sampler symbols are explained below.

(Rock Quality Designation) Percentage of intact core (pieces of sound core greater than 4 inches in length) in coring interval; calculated as the sum of lengths of intact core divided by core run length. "NA" = not applicable.

Recovery:

Elevation (in feet) referenced to mean sea level (MSL).

Run No.:

Elevation:

Depth:

Number of the individual coring interval.

Amount (in percent) of core recovered from coring interval; calculated as length of core recovered divided by run length.

Discontinuity Drawing:

Location of each naturally occurring fracture (numbered) and mechanical break (labeled "M"). Naturally occurring fractures are described in Column 10 (keyed by number) using descriptive terms defined on Sheet 2 (Items a through g).

Lithology:9

Lithologic description in this order: rock type, color, texture, grain size, weathering, strength, and other features; descriptive terms are defined on Sheet 2. Also, abbreviated description of fractures numbered in Column 8 using terms defined on Sheet 2.

Sample Type:11

Soil classifications are based on the Unified Soil Classification System.

Descriptions and stratum lines are interpretive; field descriptions may have been modified to reflect lab test results. Descriptions on these logs apply only at the specific boring locations and at the time the borings were advanced; they are not warranted to be representative of subsurface conditions at other locations or times.

5 6

Field Notes and Lab Tests:

OTHER GRAPHIC SYMBOLS

Inferred or transitional contact

R un

N o.

E le va tio n fe et

D ep th fe et

F ra ct ur es pe r F oo t

R Q

D

Li th ol og y

Distance (in feet) below the collar of the borehole.

Sketch of the naturally occurring fractures, veins, and mechanical breaks, showing the angle of the fractures relative to the cross-sectional axis of the core. "NR"=no recovery.

Fracture Number:

A graphic log of material encountered using symbols to represent differing soil and rock types; graphic symbols are explained below.

Description:10

Sample identification number.

Blows / 6 in.:

ROCK CORE

7 8 9 11

MATERIAL DESCRIPTION

Blows / 1 in.:

Drill Time [Rate]: Time (in 24-hour clock) marking start and finish of each run; drill rate (in feet per hour) is reported in brackets.

FIELD NOTES

AND LAB TESTS

Number of blows to advance driven sampler each 1-inch drive interval, or distance noted.

B lo w s

/ 1 in

SAND with SILT (SP-SM)

SILTY SAND (SM)

WELL GRADED SAND

with SILT (SW-SM)

SAND (SP)

WELL GRADED SAND

with SILT and GRAVEL

(SW-SM)

SANDY LEAN CLAY (CL)

SAND with SILT and

GRAVEL (SP-SM)

LEAN CLAY with

GRAVEL (CL)

SILTY GRAVEL with

SAND (GM)

SILTY CLAY with SAND and GRAVEL (CL-ML)

CLAYEY SAND with

GRAVEL (SC) SANDY SILT (ML)

LEAN CLAY (CL)

CLAYEY SAND (SC)

TYPICAL MATERIAL GRAPHIC SYMBOLS

SAND with GRAVEL (SP)

SILTY SAND with

GRAVEL (SM)

SAND with CLAY and

GRAVEL (SP-SC)

GRAVEL with CLAY and

SAND (GP-GC)

CLAYEY GRAVEL with

SAND (GC)

SPT unlined split spoon (1.4-inch-I.D.)

LABORATORY TEST ABBREVIATIONS

Compaction Test One-dimensional consolidation test Chemical tests to determine corrosivity Water content, % and dry unit weight, pcf Expansion Index at 50% saturation Liquid Limit and Plasticity Index from Atterberg Limits Sieve analysis Direct shear test Unconfined compressive strength test

COMP

CONS

CORR

MC/DD

EI

LL,PI

SA

DS

UCS

Project Location: Tohono O’odham Nation Lands, Arizona

Project Number: 2011-026.06

Project: Custom and Border Protection Towers Key to Log of Soil / Core Boring

Sheet 1 of 3

R ep or t:

G P

C O

R E

S

O

IL

_K E

Y

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

P J;

/1 7/

Discontinuity Type:

- Quartz Sd - Sand

Type of Infilling:

VN

original rock fabric is not apparent; material can be easily broken by hand

Original minerals of rock have been almost entirely decomposed to secondary minerals, although original fabric may be intact; material can be granulated by hand

More than half of the rock is decomposed; rock is weakened so that a minimum 2-inch-diameter sample can be broken readily by hand across rock fabric

Rock is discolored and noticeably weakened, but less than half is decomposed; a

Original minerals of rock have been entirely decomposed to secondary minerals, and

Description

ROCK WEATHERING / ALTERATION

Recognition

ROCK HARDNESS

Soft

Can be readily scratched by a knife blade; scratch leaves heavy trace of dust and

Recognition

Reserved for plastic material

Surface roughness is described according to the ISRM (1981) suggested method. Accordingly, a Joint Roughness Coefficient (JRC) is estimated for each discontinuity described; JRC values are assigned according to example roughness profiles provided to field personnel.

Cl - Clay Ca - Calcite Ch - Chlorite Fe - Iron oxide Gy - Gypsum/Talc H - Healed Mn - Manganese oxide

Friable

Low Hardness Moderately Hard

Hard

Very Hard

Can be easily crumbled by hand, pulverized or reduced to powder; too soft to be cut with a pocket knife

Rock is slightly discolored, but not noticeably lower in strength than fresh rock Rock shows no discoloration, loss of strength, or other effect of weathering/alteration

Residual Soil

Extremely Weathered/Altered

Highly Weathered/Altered

Moderately Weathered/Altered

Slightly Weathered/Altered

Approximate spacing between joints of the same set is recorded to the nearest 0.1 ft. "?" indicates no nearby joints were identified that share sufficiently similar characteristics to designate a joint set.

Dip of fracture surface measured relative to plane perpendicular to core axis

F - Fault J - Joint Sh - Shear Fo - Foliation V - Vein B - Bedding

Aperture (inches):

W - Wide (0.5-2.0) MW - Moderately Wide (0.1-0.5) N - Narrow (0.05-0.1) scratch is readily visible after powder has been blown away Can be scratched with difficulty; scratch produces little powder and is often faintly visible; traces of knife steel may be visible Cannot be scratched with a pocket knife; knife steel marks are left on surface

Description minimum 2-inch-diameter sample cannot be broken readily by hand across rock fabric

No - None Py - Pyrite Qz

- Very Narrow (<0.05) T - Tight (0)

No - None

Roughness of Surface:

g Discontinuity Spacing:

Amount of Infilling:

Su - Surface stain Sp - Spotty Pa - Partially filled Fi - Filled

Description

Extremely Weak Very Weak Weak Moderately Strong Strong Very Strong Extremely Strong

Can be indented by thumbnail Can be peeled by pocket knife Can be peeled with difficulty by pocket knife Can be indented 5 mm with sharp end of pick Requires one hammer blow to fracture Requires many hammer blows to fracture Can only be chipped with hammer blows

Recognition

ROCK STRENGTH

d c b a e f

DISCONTINUITY DESCRIPTORS

Fresh

Can be gouged deeply or carved with a pocket knife

KEY TO DESCRIPTIVE TERMS USED ON CORE LOGS

P - Parted

Project Location: Tohono O’odham Nation Lands, Arizona

Project Number: 2011-026.06

Project: Custom and Border Protection Towers Key to Log of Soil / Core Boring

Sheet 2 of 3

R ep or t:

G P

C O

R E

S

O

IL

_K E

Y

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

M

M

M M M M M

M

M

M

M

M M

M M

M

M

0% 0%

[27]

[33]

[15]

Case hole to 5' bgs with 8" HSA

[Colluvium] Poorly Graded GRAVEL with SAND (GP):

grayish red, dry, unconsolidated, gravel to boulder size rock fragments

Volcanic Bedrock: very strong, hard, slightly weathered, grayish red; bedding 1 - 3 mm thick and slightly undulatory; vugs 1 - 5 mm diameter; calcitic infilling reacts strongly with HCl.

1: 85°, J/P, N, Ca, Fi, 6-8

1: 45°, J/P, VN, No, No, 12-14

2: 5°, B/P, N, Gyp, Fi, 6-8

3: 5°, B/P, N, No, No, 6-8

1: 80°-90°, J/P, N, No, No, 10-12

NA

NA

NR

NR

P. ChauLogged By

Not Encountered

S. Duke

Total Drilled Depth / Length

Drilling Contractor

Checked By

Drill Bit Size/Type

06/06/2014

Drill Rig Type

8 inch/ finger bit & 3-7/8 inch diamond bit 21.5 feet

Sampler Type

Groundwater Level

Borehole Completion

Hammer Data

Mobile CME-850 (track-mounted) Yellow Jacket Drilling

Drilling Method

Date(s) Drilled

Hollow Stem Auger & Diamond Core

Triple barrel

Location

Backfilled with soil cuttings

Approximate Ground Surface Elevation 1925

NORTHING: 279267.1430

EASTING: 593870.8690

Sheet 1 of 2

Project: Custom and Border Protection Towers Log of AJO-446 Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

M

M

M

M

M

M

M

M M M

% [60]

2: 15°, B/P, N, No, No, 6-8

3: 10°, B/P, N, No, No, 8-10

4: 80°, J/P, N, No, No, 6-8

1: 55°, J/P, N, No, No, 12-14 2: 75°, J/P, N, No, No, 12-14 3: 10°, B/P, N, Cl, Fi, 6-8 4: 65°, J/P, N, No, No, 12-14 5: 10°, B/P, N, No, No, 6-8 6: 60°, J/P, N, No, No, 12-14 7: 10°, B/P, N, No, No, 6-8 8: 85°, J/P, Np, No, No, 10-12

Total Drilled Length = 21.5 feet

NA

NA

Sheet 2 of 2

Project: Custom and Border Protection Towers Log of AJO-446 Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

0-10 feet: COMP, EI, CORR

5 feet: LL,PI, DS

10 feet: SA

Lean Clay with Sand (CL): yellowish brown, dry, medium plasticity, fine SAND hard

Sandy Silt (ML): pale brown, dry, hard, fine SAND many oxide stringers, pin pores, iron oxide staining, reacts with HCl

1, 2, 2, 3, 3, 3, 5, 5, 6, 6, 8, 9

1/2", 3/2", 2, 2, 4, 3, 3, 3, 4, 5, 5, 5, 6, 7, 5, E. VillanuevaLogged By

Not Encountered

S. Duke

Total Drilled Depth / Length

Drilling Contractor

Checked By

Drill Bit Size/Type

06/07/2014

Drill Rig Type

8 inch/ finger bit 71.5 feet

Sampler Type

140 lbs, 30" drop, automatic

Groundwater Level

Borehole Completion

Hammer Data

Mobile CME-850 (track-mounted) Yellow Jacket Drilling

Drilling Method

Date(s) Drilled

Hollow Stem Auger

Cal Mod, SPT

Location

Backfilled with soil cuttings

Approximate Ground Surface Elevation 1685

NORTHING: 281233.2060

EASTING: 543727.1030

Sheet 1 of 5

Project: Custom and Border Protection Towers Log of AJO-448A Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

15 feet: LL,PI, CONS, DS

20 feet: SA

25 feet: DS

Lean Clay (CL): brown, dry, medium plasticity, hard, trace fine SAND, manganese oxide, and iron oxide staining, reacts with HCl

Sandy Lean Clay (CL): brown, dry, hard, medium plasticity, medium to fine SAND, calcium carbonate deposits, manganese oxide specs

1/3", 2, 2, 2, 4, 3, 4, 4, 7, 9, 9, 9, 10, 13, 9

1/3", 1/3", 1/2", 1, 4/3", 2, 1, 3, 2, 5, 5

1/2", 1, 2/3", 1, 2, 4, 3, 4, 6, 5, 6, 11, 16, 13/0.5"

50/5"

51/4.5"

Sheet 2 of 5

Project: Custom and Border Protection Towers Log of AJO-448A Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

30 feet: SA, LL,PI

40 feet: SA add water at 42' bgs very pale brown, very stiff, fine SAND, no manganese oxide specs hard, decreased fines, fine GRAVEL layer

Sandy Silt (ML): very pale brown, dry, very stiff, fine SAND, trace coarse SAND, non plastic, pin holes, reacts with HCl

1/4", 1/6", 1, 2, 1, 3, 2, 3/2", 1, 1, 2, 2, 2, 1, 2, 2, 2, 3, 2, 4, 4, 5, 7, 5, 6, 6

2, 1, 1, 2, 1, 1, 1/2", 1, 1/2", 1, 1, 1, 3, 3, 4, 3

Sheet 3 of 5

Project: Custom and Border Protection Towers Log of AJO-448A Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/ add water at 47' bgs

50 feet: SA

60 feet: SA hard, reacts with HCl

Silt (ML): very pale brown, dry, hard, non plastic, reacts with HCl

Lean Clay (CL): very pale brown, hard, moist, medium plasticity, manganese oxide specs trace medium SAND

4, 3, 2, 3, 2, 2, 2, 2, 2, 3, 4, 5, 9, 11, 11, 19

1/2", 3, 2, 2, 3, 4, 3, 4, 6, 4, 6, 5, 5, 8, 8, 10, 4/2", 1, 3, 1, 1, 2, 2, 2, 2, 3, 4, 5, 6, 8, 7, 10, 2, 2, 2, 4, 4, 5, 5, 5, 5, 5, 5, 11, 7, 10, 8, 50/4"

Sheet 4 of 5

Project: Custom and Border Protection Towers Log of AJO-448A Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

70 feet: SA no reaction with HCl

Silty Sand (SM): pinkish gray, dry, dense, coarse to fine SAND, few fine GRAVEL

Total Drilled Length = 71.5 feet

11, 13, 3/0.5"

1/2", 4, 3, 6, 8, 7, 10, 15, 17

2, 2, 1, 1, 2, 4, 3, 3, 3, 4, 2, 4, 5, 3, 5, 3, 5, 5

49/4"

52/5.5"

Sheet 5 of 5

Project: Custom and Border Protection Towers Log of AJO-448A Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

0-10 feet: SA

10 feet: DS 10-20 feet: SA, COMP, EI, CORR

Silt with Sand (ML): light gray, dry, non plastic, fine

SAND

hard, strongly reacts with HCl calcium carbonate stringers, rootlets observed at 10' bgs Lean Clay (CL): light olive brown, dry, medium plasticity, strongly reacts with HCl

Sandy Silt (ML): brown, dry, hard, medium to fine SAND, strongly reacts with HCl

1/2", 1, 1, 2, 1, 2, 2, 3, 2, 3, 4, 3, 3, 3, 3, 3, 5

1/2", 1/2", 2, 3, 2, 3, 3, 4, 3, 6, 5, 7, 8, 10, 20/0.75"

50/4.75"

P. ChauLogged By

Not Encountered

S. Duke

Total Drilled Depth / Length

Drilling Contractor

Checked By

Drill Bit Size/Type

06/07/2014-06/08/2014

Drill Rig Type

8 inch/ finger bit 71.3 feet

Sampler Type

140 lbs, 30" drop, automatic

Groundwater Level

Borehole Completion

Hammer Data

Mobile CME-850 (track-mounted) Yellow Jacket Drilling

Drilling Method

Date(s) Drilled

Hollow Stem Auger

Cal Mod, SPT

Location

Backfilled with soil cuttings

Approximate Ground Surface Elevation 1685

NORTHING: 281225.8300

EASTING: 543748.8230

Sheet 1 of 5

Project: Custom and Border Protection Towers Log of AJO-448B Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

15 feet: SA, LL,PI

20 feet: CONS, DS

20-30 feet: CORR

25 feet: SA

Lean Clay (CL): light brown, moist, very stiff, medium plasticity, calcium carbonate stringers < 3 mm thick;

strongly reacts with HCl brown, manganese oxide stringers and nodules < 2 mm thick; strongly reacts with HCl

Sandy Lean Clay (CL): brown, dry, hard, medium plasticity, coarse to medium SAND, few fine gravel, strongly reacts with HCl

1/4", 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 1/3", 1, 2, 1, 2, 2, 1, 3, 2, 3, 4, 4, 4, 5, 6, 6

1/3", 2, 1, 2, 2, 3, 3, 3, 3, 3, 5, 4, 7, 9, 9/1.33"

34/5.33"

Sheet 2 of 5

Project: Custom and Border Protection Towers Log of AJO-448B Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

30 feet: DS

35 feet: SA

Lean Clay (CL): brown, dry, hard, medium plasticity, manganese oxide stringers < 3 mm thick

Sandy Silt (ML):light yellowish brown, dry, hard, strongly reacts with HCl

Sandy Lean Clay (CL): light brown, dry, hard, medium plasticity, pinhole pores; strongly reacts to HCl yellowish brown, moist, calcium carbonate stringers < 1 mm thick, manganese stringers and nodules < 1 mm thick, strongly reacts with HCl

1/2", 2, 2, 1, 2, 3, 7, 8, 11, 11, 1/2", 1/2", 1/2", 2, 1, 3, 4, 5, 5, 6, 7, 10, 11, 14/0.75"

1/2", 2, 2, 3, 4, 6, 7, 8, 9, 14, 4/0.25"

48/5.25"

48/4.75"

Sheet 3 of 5

Project: Custom and Border Protection Towers Log of AJO-448B Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

50 feet: SA, LL,PI

60 feet: SA strongly reacts with HCl manganese oxide stringers and nodules < 1 mm thick

Lean Clay with Sand (CL): yellowish brown, moist, hard, medium plasticity, coarse to medium SAND, sub rounded, 2, 2, 2, 3, 4, 3, 3, 5, 5, 4, 6, 6, 6, 5, 8, 7, 8, 8

1, 1, 1, 1, 3, 4, 6, 5, 7, 6, 6, 13

2, 1, 2, 2, 2, 2, 3, 3, 3, 5, 4, 5, 5, 6, 10, 11, 15, 5/0.2"

1, 4, 4, 5, 5, 8, 11, 14, 16, 8/0.5"

49/3.5"

52/5.2"

Sheet 4 of 5

Project: Custom and Border Protection Towers Log of AJO-448B Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/ strongly reacts with HCl Lean Clay (CL): yellowish brown, moist, hard, medium plasticity, strongly reacts with HCl light yellowish brown

Silty Sand (SM): pale brown, dry, very dense, coarse to medium SAND, no reaction with HCl

Total Drilled Length = 71.3 feet

1, 1, 2, 2, 2, 2, 3, 4, 3, 4, 3, 5, 5, 5, 7, 5, 6, 9

2, 3, 4, 7, 4, 7, 5, 7, 8, 6, 8, 11, 13, 11, 16, 10

50/4"

Sheet 5 of 5

Project: Custom and Border Protection Towers Log of AJO-448B Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

M

M M M M M M M M M

M M M M

M

0% 0%

[90]

[100]

HSA from 0' to 3.5' bgs

Cuttings at 3.5' bgs ~90% return on water from 3.5' bgs to 21.5' bgs

[Colluvium] Poorly Graded GRAVEL with SAND (GP):

light reddish brown, dry, unconsolidated, gravel to boulder size rock fragments

Volcanic Bedrock moderate reddish brown, dry, weak, hard, highly weathered, vesicular, pores reacts with HCl becomes strong and slightly weathered diagenetic minerals in vesicules and along joints react strongly with HCl

1, 1, 2, 1, 3, 8, 10, 10, 11, 15, 4/0.2"

NA

NA

NA

NA

NA

NA

NA

NR

NR

P. ChauLogged By

Not Encountered

S. Duke

Total Drilled Depth / Length

Drilling Contractor

Checked By

Drill Bit Size/Type

06/09/2014

Drill Rig Type

8 inch/ finger bit & 3-7/8 inch diamond bit 21.5 feet

Sampler Type

140 lbs, 30" drop, automatic

Groundwater Level

Borehole Completion

Hammer Data

Mobile CME-850 (track-mounted) Yellow Jacket Drilling

Drilling Method

Date(s) Drilled

Hollow Stem Auger & Diamond Core

SPT, triple barrel

Location

Backfilled with soil cuttings

Approximate Ground Surface Elevation 1956

NORTHING: 294580.4740

EASTING: 505753.7500

Sheet 1 of 2

Project: Custom and Border Protection Towers Log of AJO-450 Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

M

M

M

M

M

M

M

M

M M

% [38] becomes fresh, blackish red

1: 85°, J/P, N, Ca, Fi, 10-12 does not react to HCl

1: 10°, J/P, N, White mineral, Su, 6-8

Total Drilled Length = 21.5 feet

NA

NA

NR

[60]

Sheet 2 of 2

Project: Custom and Border Protection Towers Log of AJO-450 Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

0-10 feet: SA, COMP, CORR

Rig chatter at 10' bgs

Silty Sand (SM): brown, dry, medium to fine SAND, reacts with HCl light brown, loose, decreased fines, reacts with HCl brown, dense, decreased fines

1/6", 1/2", 1/2", 1/3", 1/2", 2/3"

1/4", 1, 1, 2, 2, 2, 2, 5, 6, 7, 7, 8, 5, 8, E. VillanuevaLogged By

Not Encountered

S. Duke

Total Drilled Depth / Length

Drilling Contractor

Checked By

Drill Bit Size/Type

06/09/2014

Drill Rig Type

8 inch/ finger bit 71.2 feet

Sampler Type

140 lbs, 30" drop, automatic

Groundwater Level

Borehole Completion

Hammer Data

Mobile CME-850 (track-mounted) Yellow Jacket Drilling

Drilling Method

Date(s) Drilled

Hollow Stem Auger

Cal Mod, SPT

Location

Backfilled with soil cuttings

Approximate Ground Surface Elevation 2000

NORTHING: 337805.5480

EASTING: 495789.4050

Sheet 1 of 5

Project: Custom and Border Protection Towers Log of AJO-452A Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

15 feet: SA

20 feet: CONS 20-30 feet: SA

Rig chatter at 28' bgs

Sandy Gravel with Silt (GM): yellowish red, dry, very dense, coarse to fine SAND, low plasticity, 3" diameter rock in sampler

Well Graded Gravel with Sand (GW): yellowish red, dry, very dense, coarse to fine GRAVEL, coarse to fine SAND, 12" diameter GRAVEL/cobble in sampler decreased fines

2, 1, 1, 2, 1, 2, 2, 4, 5, 11, 11, 14, 13, 10, 7, 8, 8, 5, 11, 14, 5, 10, 13, 11, 6, 7, 7, 3/0.5"

2/3", 1, 1, 2, 3/2", 4, 3, 5, 8, 7, 7, 8, 7, 9, 10

47/5.5"

48/5"

Sheet 2 of 5

Project: Custom and Border Protection Towers Log of AJO-452A Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

30-40 feet: SA

40-50 feet: SA

Poorly Graded Gravel with Silt and Sand (GP-GM):

yellowish red, dry, very dense, coarse to fine GRAVEL, coarse to fine SAND, 1.5" diameter GRAVEL in Sampler;

reacts with HCl light reddish brown, fine GRAVEL, reacts with HCl very pale brown, fine SAND, pin holes; manganese oxide deposits, faint calcium carbonate deposits; reacts with HCl

3, 2, 5, 11, 9, 7, 9, 8, 33

2, 1, 2, 2, 2, 2, 2, 2, 3, 4, 2, 3, 4, 8, 12, 16, 9/0.25"

5, 5, 3, 3, 3, 6, 7, 12, 12, 14, 5/0.33"

50/3"

50/4.33"

49/4.25"

Sheet 3 of 5

Project: Custom and Border Protection Towers Log of AJO-452A Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

Rig chatter at 47'

50 feet: SA 50-60 feet: SA

Rig chatter at 52' bgs

60-70 feet: SA light brown, coarse to fine SAND, reacts with HCl

Clayey Gravel with Sand (GC): light reddish brown, moist, very dense, fine GRAVEL, coarse to fine SAND, reacts with HCl, 2.5" diameter rock in sample tube

Poorly Graded Gravel with Silt and Sand (GP-GM): light brown, dry, very dense, coarse to fine SAND, reacts with HCl

1, 1, 2, 2, 5, 13, 12, 8, 5, 5, 9, 4, 4, 4, 6, 15, 21

3, 5, 2, 5, 9, 12, 13, 39

2, 4, 3, 3, 4, 5, 5, 6, 8, 5, 5, 6, 5, 6, 11, 22, 4/0.33

2, 1, 3, 6, 4, 7, 18, 25, 8/0.33

52/2"

51/2.33"

50/5"

48/4.33"

Sheet 4 of 5

Project: Custom and Border Protection Towers Log of AJO-452A Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

Sandy Lean Clay (CL): pinkish gray, dry, hard, fine SAND, medium plasticity, manganese oxide

Total Drilled Length = 71.2 feet

1, 2, 2, 1, 2, 1, 3, 3, 2, 4, 5, 14, 13, 17, 16, 4/0.5

5, 4, 3, 5, 4, 4, 6, 5, 7, 6, 8, 9, 20, 25, 5/0.25"

50/3.5"

50/2.25"

Sheet 5 of 5

Project: Custom and Border Protection Towers Log of AJO-452A Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

COMP

5 feet: DS, CONS

10-20 feet: SA, EI, CORR

Rig chatter from 10' bgs to 15' bgs

Sandy Silt (ML): pinkish gray, dry, non plastic, coarse to fine SAND

Well Graded Sand with Silt (SW-SM): pinkish gray, dry, medium dense, coarse to fine SAND, angular, fine GRAVEL, subrounded, grains coated with calcium carbonate; coating strongly reacts with HCl

Silty Gravel with Sand (GM): brown, dry, very dense, fine GRAVEL, coarse to fine SAND, strongly reacts with HCl

1/2", 2/3", 1, 1, 1, 1, 1, 2, 2, 3, 2, 3, 2, 2, 2

1/2", 1/2", 1, 1, 1, 2, 3, 4, 4, 7, 14, 18, 16

48/3"

P. ChauLogged By

Not Encountered

S. Duke

Total Drilled Depth / Length

Drilling Contractor

Checked By

Drill Bit Size/Type

06/10/2014

Drill Rig Type

8 inch/ finger bit 72.5 feet

Sampler Type

140 lbs, 30" drop, automatic

Groundwater Level

Borehole Completion

Hammer Data

Mobile CME-850 (track-mounted) Yellow Jacket Drilling

Drilling Method

Date(s) Drilled

Hollow Stem Auger

Cal Mod, SPT

Location

Backfilled with soil cuttings

Approximate Ground Surface Elevation 2000

NORTHING: 337776.5210

EASTING: 495776.8180

Sheet 1 of 5

Project: Custom and Border Protection Towers Log of AJO-452B Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

Rig chatter from 15' bgs to 20' bgs

20 feet: SA, LL,PI 20-30 feet: SA, CORR

Rig chatter from 20' bgs to 25' bgs

25 feet: DS Rig chatter from 25' bgs to 30' bgs

Clayey Sand with Gravel (SC): light reddish brown, dry, very dense, medium to fine SAND, few coarse SAND, few fine GRAVEL, no reaction with HCl

Silty Sand with Gravel (SM): yellowish red, dry, very dense, medium to fine SAND, medium plasticity, no reaction with HCL

Poorly Graded Gravel with Silt and Sand (GP-GM):

brown, dry, very dense, medium to fine SAND, no reaction with HCl

1, 1, 2, 4, 5, 4, 7, 28, 15/0.33"

1, 2, 2, 2, 4, 8, 15, 13, 13, 11/0.5"

1, 1, 1, 2, 1, 1, 2, 2, 6, 8, 9, 5, 6, 9, 12, 18, 5

50/2.33"

52/3.5"

50/5"

Sheet 2 of 5

Project: Custom and Border Protection Towers Log of AJO-452B Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

30 feet: SA, LL,PI

Rig chatter from 30' bgs to 35' bgs

Rig chatter from 35' bgs to 40' bgs

40-50 feet: SA Rig chatter from 40' bgs to 45' bgs

SIlty Gravel with Sand (GM): light brown, dry, very dense, fine GRAVEL, no reaction with HC;

Poorly Graded Gravel with Silt and Sand (GP-GM):

brown, dry, very dense, coarse to medium SAND, fine GRAVEL, strongly reacts with HCl

Clayey Sand with Gravel (SC): light brown, dry, very dense, coarse to fine SAND, fine GRAVEL, strongly reacts with HCl

1/2", 1/2", 1, 1, 2, 4, 3, 3, 3, 3, 7, 7, 7, 8, 8, 1, 1, 4, 6, 6, 23, 9, 9, 10, 1, 1, 2, 7, 9, 2, 1, 2, 3, 7, 6, 5, 5, 5, 6, 5, 7, 6

48/4"

Sheet 3 of 5

Project: Custom and Border Protection Towers Log of AJO-452B Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

Rig chatter from 45' bgs to 50' bgs

50-60 feet: SA Rig chatter from 50' bgs to 55' bgs

Rig chatter from 55' bgs to 60' bgs

60-70 feet: SA reddish brown, few COBBLES

Poorly Graded Gravel with Clay and Sand (GP-GC):

pinkish gray, dry, very dense, coarse to fine GRAVEL, coarse to fine SAND, strongly reacts with HCl

Clayey Sand with Gravel (SC): brown, dry, very dense, medium to fine SAND, trace coarse SAND, fine GRAVEL, strongly reacts with HCl

1, 3, 3, 5, 13 , 25/0.75"

17, 6, 7, 18, 2/0.25"

8, 12, 7, 8, 5, 8, 11, 16, 19, 5/0.25"

3, 6, 9, 10, 5, 7, 5, 7, 7, 10, 8, 50/5.75"

50/4.25"

51/3.25"

Sheet 4 of 5

Project: Custom and Border Protection Towers Log of AJO-452B Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

12:15 Rig ran out of fuel after driving SPT 5.25" at 70' bgs; blow counts compromised, no recovery coarse to fine GRAVEL, strongly reacts with HCl

Total Drilled Length = 72.5 feet

3, 3, 6, 6, 9, 13, 9, 19, 10, 11/0.25"

10, 9, 7, 5, 5, 3, 3, 4, 4, 5, 5, 3, 5, 5, 6, 8, 18, 6/0.5"

49/3.25"

48/5.5"

Sheet 5 of 5

Project: Custom and Border Protection Towers Log of AJO-452B Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

COMP, CORR

Driller reports hard drilling at 7' bgs

Rig chatter at 9' bgs

10-20 feet: SA, EI, CORR

Silty Sand with Gravel (SM): yellowish red, dry, coarse to fine SAND, fine GRAVEL pinkish white, very dense rock fragments in sampler

3, 6, 5, 4, 5, 5, 6, 8, 15

,17, 4/0.25"

3, 5, 5, 5, 6, 7, 10, 5, 10, 5, 7, 8, 7, 5, 5, 5, 6, 50/4.25"

E. VillanuevaLogged By

Not Encountered

S. Duke

Total Drilled Depth / Length

Drilling Contractor

Checked By

Drill Bit Size/Type

6/12/2014

Drill Rig Type

8 inch/ finger bit 71.5 feet

Sampler Type

140 lbs, 30" drop, automatic

Groundwater Level

Borehole Completion

Hammer Data

Mobile CME-850 (track-mounted) Yellow Jacket Drilling

Drilling Method

Date(s) Drilled

Hollow Stem Auger

Cal Mod, SPT

Location

Backfilled with soil cuttings

Approximate Ground Surface Elevation 2127

NORTHING: 354021.8030

EASTING: 493627.3530

Sheet 1 of 5

Project: Custom and Border Protection Towers Log of AJO-454 Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

15 feet: DS

20 feet: SA, LL,PI 20-30 feet: SA, CORR

25 feet: DS strong brown, dry, coarse to fine SAND, few coarse GRAVEL, calcium carbonate stringers

Fat Clay with Sand (CH): light brown, dry, hard, fine SAND, high plasticity, calcium carbonate deposits;

manganese oxide stringers

Silty Sand with Gravel (SM): light brown, dry, very dense, fine SAND, trace coarse SAND, calcium carbonate deposits

7, 3, 5, 4, 6, 5, 6, 4, 6, 14, 13, 4, 3, 2, 3, 2, 2, 2, 3, 3, 2, 5, 4, 7, 8, 6, 12, 12, 6, 7, 4, 3, 4, 3, 4, 3, 3, 4, 4, 5, 7, 9, 13, 21/0.5"

50/3.5"

Sheet 2 of 5

Project: Custom and Border Protection Towers Log of AJO-454 Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

Ground vibrations at 43' bgs

Silty Clay with Sand (CL-ML): light brown, dry, low plasticity, hard, fine SAND, trace coarse SAND, trace calcium carbonate deposits very stiff manganese oxide stringers

1/3", 2, 2, 1, 3, 1, 3, 3, 4, 3, 4, 2, 3, 3, 5, 1

1, 2, 1/4", 2, 2, 3, 1/3", 3, 3, 4, 4, 5, 5

2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 3, 2, 3, 3, 2, 2, 3, 4

Sheet 3 of 5

Project: Custom and Border Protection Towers Log of AJO-454 Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

55 feet: LL,PI

60 feet: SA, LL.PI hard, decreased fines

3.5" cobble in sampler pink, iron oxide straining

Lean Clay with Sand (CL): pink, dry, hard, fine SAND, medium plasticity, calcium carbonate specs, manganese oxide specs light yellowish brown, trace medium SAND, pin holes;

manganese oxide stringers; calcium carbonate deposits

13, 22, 4, 3, 9, 12, 13, 12, 20, 2, 1, 1, 2, 2, 2, 2, 4, 3, 4, 6, 6, 6, 7, 9, 13, 11, 7/0.25"

30, 27, 10/0.5"

8, 4, 5, 4, 4, 4, 3, 5, 4, 5, 5, 6, 7, 11, 67/2.5

50/4"

53/5.25

Sheet 4 of 5

Project: Custom and Border Protection Towers Log of AJO-454 Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

1713 70 feet: SA

Lean Clay (CL): very pale brown, dry, very stiff, medium plasticity, pin holes; manganese oxide; reacts with HCl

Sandy Silt (ML): very pale brown, dry, very stiff, low plasticity, calcium carbonate; manganese oxide

Total Drilled Length = 71.5 feet

11, 11, 10/0.5"

1, 1, 1, 1/2", 1, 1, 1, 1, 2, 1, 3, 3, 4, 3, 3, 4, 4

2, 1, 2, 2, 2, 2, 3, 2, 2, 3, 2, 2, 2, 2, 2, 3, 4, 3

50/4.5"

Sheet 5 of 5

Project: Custom and Border Protection Towers Log of AJO-454 Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

COMP, CORR

5 feet: DS

10-20 feet: SA.

CORR

Silty Sand (SM): light brown, very dense, medium to fine SAND, angular, few fine GRAVEL, angular, reacts with HCl coarse to medium SAND, angular, trace fine GRAVEL, reacts with HCl

3, 3, 2, 4, 3, 3, 6, 12, 8, 12, 14, 7/0.5"

1/3", 3, 6, 18, 50/1"

59/5.5"

50/1"

P. ChauLogged By

Not Encountered

S. Duke

Total Drilled Depth / Length

Drilling Contractor

Checked By

Drill Bit Size/Type

6/14/2014

Drill Rig Type

8 inch/ finger bit 70.3 feet

Sampler Type

140 lbs, 30" drop, automatic

Groundwater Level

Borehole Completion

Hammer Data

Mobile CME-850 (track-mounted) Yellow Jacket Drilling

Drilling Method

Date(s) Drilled

Hollow Stem Auger

SPT, MC

Location

Backfilled with soil cuttings

Approximate Ground Surface Elevation 2220

NORTHING: 407411.9810

EASTING: 477923.9030

Sheet 1 of 5

Project: Custom and Border Protection Towers Log of AJO-458 Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/

20-30 feet: SA, CORR pale brown, few fine GRAVEL, reacts with HCl

COBBLE at 25.4 feet bgs

1/3", 3, 6, 18, 50/1"

2/3", 2, 4, 11, 13, 16, 20/0.5"

1, 1, 1, 18, 27

48/5"

50/1"

49/2.5"

Sheet 2 of 5

Project: Custom and Border Protection Towers Log of AJO-458 Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R ec ov er y, R un

N o.

F ra ct ur es pe r F oo t

R Q

D

N um be r

D ep th fe et

ROCK CORE

Li th ol og y

D ril l T im e , 2

4-hr

[R at e , f t / h r]

N um b er

T yp e

R ep or t:

G P

C O

R E

S

O

IL

C

E M

E N

T

F ile

: 2

1-

6.

G

E O

P E

N T

E C

H .G

7/ brown, coarse SAND, angular, reacts with HCl

Silty Sand with Gravel (SM): very pale brown, very dense, coarse to medium SAND, angular, fine GRAVEL, angular, reacts with HCl

Silty Sand (SM): brown, very dense, coarse to fine SAND, angular, few fine GRAVEL, angular, strongly reacts with HCl

1, 1, 1, 6, 13, 16, 16, 23, 13/0.5"

1, 2, 6, 15, 30

1, 2, 4, 11, 13, 15, 31, 4/0.25"

54/5"

52/2.5"

50/2.25"

Sheet 3 of 5

Project: Custom and Border Protection Towers Log of AJO-458 Project Location: Tohono O’odham Nation Lands, Arizona Project Number: 2011-026.06

B lo w s

/ 6 in

E le va tio n fe et

MATERIAL DESCRIPTION

SOIL SAMPLES

B lo w s

/ 1 in

FIELD NOTES

AND LAB TESTS

D is co nt in u ity D ra w in g

R ec ov er y, R…