W912PL19R0011_Amendment0001_Part6A.pdf

Preliminary Geotechnical Report

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

APPENDIX C -

GEOLOGIC MAPPING AND DOWNHOLE OPTICAL TELEVIEWER SURVEYS

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

APPENDIX C

GEOLOGIC MAPPING AND DOWNHOLE OPTICAL TELEVIEWER SURVEYS

C.1 General

Surface geologic mapping of available bedrock exposures was performed in the vicinity of

Integrated Fixed Tower (IFT) sites AJO-0446 and AJO-0450. Additionally, downhole optical televiewer surveys were performed by Southwest Exploration Services, LLC within core borings

AJO-446 and AJO-450. This data was used to help characterize bedrock stratigraphy, structure, and discontinuity properties to assist with the assessment of site grading and slope stability in the area of the proposed tower pads.

C.2 Reconnaissance Geologic Surface Mapping

The reconnaissance geologic surface mapping was completed at a sampling of accessible geologic exposures surrounding IFT sites AJO-0446 and AJO-0450. To provide a full suite of information, geologic data representative of the different ranges of data present in selected portions of the outcrops were measured. Each geologic mapping location was given a station number, surveyed using a hand-held global positioning system (GPS; Garmin – Montana 650t)), plotted on an aerial photograph, and mapped generally following the geomechanics classification of Bieniawski (1989). This geomechanics classification included the following data:

(1) rock type; (2) estimated strength of intact material; (3) feature type and orientation; (4) spacing of discontinuities; (5) persistence of discontinuities; (6) discontinuity separation

(aperture); (7) discontinuity roughness; and (8) discontinuity filling type.

The geologic data collected during the reconnaissance geologic mapping are summarized in

Tables C-1 and C-2 for IFT sites AJO-0446 and AJO-0450, respectively. The discontinuity orientations tabulated in Tables C-1 and C-2 are plotted on the geologic maps presented in

Figures C-1 and C-2 for IFT sites AJO-0446 and AJO-0450, respectively.

C.3 Downhole Optical Televiewer Survey

Optical televiewer surveys were performed within boreholes AJO-446 and AJO-450 immediately following the completion of coring. The optical televiewer surveys provided information regarding the orientation, spacing, and aperture of discontinuities in the rock mass encountered in the core borings. The processing, analyses, and reporting of the optical televiewer data were

C-2 AJO-CAG IFT Geotech Report (12-17-2014).docx completed by Southwest Exploration Services, LLC in their office. The processed optical televiewer logs are attached to the end of this appendix. The logs include the downhole borehole image and a listing of the televiewer discontinuities. A summary of the optical televiewer results are presented in Tables C-3 and C-4 for sites AJO-0446 and AJO-0450, respectively.

C.4 Results

Graphical plots (stereonets) of the orientation data collected during the surface geologic mapping and optical televiewer surveys are presented on Figures C-3 and C-4 for tower sites

AJO-0446 and AJO-0450, respectively. The stereonets show points that represent the measured orientation data in dip vector format. Based on the density of the orientation measurements shown on these plots, three joint sets were approximated for IFT site AJO-0446 and one joint set was approximated for site AJO-0450.

The approximate central orientations of the joint sets measured in the vicinity of IFT site AJO-

0446 are as follows

Joint Set 1: Strike = N20W (dip direction = 250o)

Dip = 85oSW

Joint Set 2: Strike = N80E (dip direction = 350o)

Dip = 25oNW

Joint Set 3: Strike = N25W (dip direction = 65o)

Dip = 20oNE

The approximate central orientation of the joint set measured in the vicinity of IFT site AJO-0450 is as follows:

Joint Set 1: Strike = N80E (dip direction = 170o)

Dip = 87oSE

Station ID

Approx.

Latitude

Approx.

Longitude Rock Type

Strength

[1]

Feature

Type

Dip

Direction Strike Dip

Spacing

[2]

Persistence

[3]

Separation

[4]

Roughness

[5] Filling Notes

Volcanic High Joint 244 N26W 74SW Moderate Low Tight Rough (ST) None

Volcanic High Joint 75 N15W 86NE Moderate Low Open Rough (ST) None

Volcanic High Joint 347 N77E 22NW Moderate Low Open Rough (ST) None

Volcanic High Joint 349 N79E 26NW Moderate Low Open Rough (ST) None

Volcanic High Joint 249 N21W 86SW Moderate Low Very Wide Rough (UN) None

Volcanic High Joint 310 N40E 70NW Moderate Low Very Wide Rough (UN) None

Volcanic High Joint 97 N7E 22SE Moderate Low Open Slightly Rough (UN) None

Volcanic High Joint 66 N24W 26NE Moderate Low Open Rough (UN) None

Volcanic High Joint 56 N34W 86NE Moderate Low Open Rough (UN) None

Volcanic High Joint 296 N26E 70NW Moderate Low Open Rough (UN) None

Volcanic High Joint 282 N12E 74NW Moderate Low Open Rough (UN) None

Volcanic High Joint 26 N64W 41NE Moderate Low Open Rough (UN) None

Volcanic High Joint 30 N60W 26NE Very Wide Low Open Rough (UN) None

Volcanic High Joint 110 N20E 80SE Moderate Low Open Rough (UN) None

Volcanic High Joint 106 N16E 60SE Moderate Low Open Rough (UN) None

Volcanic High Joint 277 N7E 14NW Moderate Low Open Rough (UN) None

Volcanic High Joint 292 N22E 16NW Moderate Low Open Rough (UN) None

Volcanic High Joint 253 N17W 87SW Moderate Very Low Very Wide Very Rough (UN) None

Volcanic High Joint 265 N5W 79SW Moderate Very Low Very Wide Very Rough (UN) None

Volcanic High Joint 77 N13W 13NE Moderate Very Low Very Wide Very Rough (ST) None

Volcanic High Joint 13 N77W 65NE Moderate Very Low Very Wide Rough (PL) None

Volcanic High Joint 271 N1E 80NW Moderate Medium Very Wide Rough (UN) None

Volcanic High Joint 290 N20E 83NW Moderate Medium Very Wide Rough (UN) None

Volcanic High Joint 164 N74E 12SE Moderate Medium Very Wide Rough (UN) None

Volcanic High Joint 54 N36W 13NE Moderate Medium Very Wide Rough (ST) None

Volcanic High Joint 242 N28W 88SW Moderate Very Low Very Wide Rough (UN) None

Volcanic High Joint 269 N1W 88SW Moderate Very Low Very Wide Rough (UN) None

Volcanic High Joint 61 N29W 19NE Moderate Very Low Very Wide Rough (ST) None

Volcanic High Joint 164 N74E 8SE Moderate Very Low Very Wide Rough (ST) None

Volcanic High Joint 203 N67W 80SW Moderate Very Low Very Wide Rough (UN) None

Volcanic High Joint 294 N24E 80NW Moderate Medium Very Wide Slightly Rough (UN) None

Volcanic High Joint 260 N10W 76SW Moderate Medium Very Wide Slightly Rough (UN) None

Volcanic High Joint 96 N6E 12SE Moderate Medium Very Wide Slightly Rough (ST) None

Volcanic High Joint 111 N21E 13SE Moderate Medium Very Wide Rough (ST) None

Notes: [1] Estimated Unconfined Compressive Strength (UCS) of Intact Rock Material:

Very Low = 1‐5MPa; Low = 5‐25 Mpa; Moderate = 25‐50 Mpa; Medium High = 50‐100 Mpa; High = 100‐250 Mpa; Very High = >250 Mpa

[2] Spacing of Discontinuities:

Very Close = <60 mm; Close = 60‐200 mm; Moderate = 200‐600 mm; Wide = 0.6‐2 m; Very Wide= >2 m.

[3] Persistence (Continuity) of Discontinuities:

Very Low = <1 m; Low = 1‐3 m; Medium = 3‐10 m; High = 10‐20 m; Very High = >20 m.

[4] Separation (Aperature) of Discontinuities:

Very Tight = <0.1 mm; Tight = 0.1‐0.5 mm; Moderately Open = 0.5‐2.5 mm; Open ‐ 2.5‐10 mm; Very Wide = >10 mm.

[5] Roughness of Discontinuities:

Also Noted if Surfaces are Stepped (ST), Undulating (UN), or Planar (PL).

As shown in ISRM (1981).

‐112.258531.7677578

CUSTOM AND BORDER PROTECTION TOWERS

TOHONO O’ODHAM NATION LANDS, ARIZONA

‐112.258431.7674186

‐112.258431.7676397

4 31.766683 ‐112.2579

5 31.766785 ‐112.2578

2 31.766925 ‐112.258

3 31.766883 ‐112.258

TABLE C‐1

AJO‐446: GEOLOGIC RECONNAISSANCE MEASURED DISCONTINUITIES

1 31.767006 ‐112.2581

Station ID

Approx.

Latitude

Approx.

Longitude Rock Type

Strength

[1]

Feature

Type

Dip

Direction Strike Dip

Spacing

[2]

Persistence

[3]

Separation

[4]

Roughness

[5] Filling Notes

Volcanic High Joint 239 N31W 87SW Moderate Low Very Wide Rough (UN) None

Volcanic High Joint 186 N84W 84SW Moderate Low Very Wide Rough (UN) None

Volcanic High Joint 293 N23E 88NW Moderate Low Very Wide Rough (UN) None

Volcanic High Joint 316 N46E 79NW Moderate Low Very Wide Rough (UN) None

Volcanic High Joint 71 N19W 84NE Moderate Low Very Wide Rough (UN) None

Volcanic High Joint 148 N58E 84SE Moderate Low Very Wide Rough (UN) None

Volcanic High Joint 205 N65W 89SW Moderate Low Very Wide Rough (UN) None

Volcanic High Joint 300 N30E 52NW Moderate Low Very Wide Rough (UN) None

Volcanic High Joint 19 N71W 60NE Moderate Low Very Wide Rough (UN) None

Volcanic High Joint 113 N23E 68SE Moderate Low Very Wide Rough (UN) None

4 31.808276 ‐112.5415 Volcanic High Joint 248 N22W 83SW Moderate Low Very Wide Rough (UN) None

Volcanic High Joint 34 N56W 84NE Moderate Low Very Wide Rough (UN) None

Volcanic High Joint 258 N12W 78SW Moderate Low Very Wide Rough (UN) None

Volcanic High Joint 188 N82W 62SW Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 340 N70E 43NW Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 212 N58W 68SW Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 180 EW 23S Moderate Low Very Wide Slightly Rough (UN) Surface Surface coating 1‐3mm thick

Volcanic High Joint 262 N8W 60SW Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 210 N60W 79SW Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 97 N7E 84SE Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 266 N4W 11SW Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 251 N19W 83SW Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 91 N1E 4SE Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 127 N37E 4SE Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 96 N6E 81SE Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 86 N4W 8NE Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 239 N31W 75SW Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 72 N18W 9NE Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 273 N3E Vertical Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 158 N68E 78SE Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 191 N79W 42SW Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 44 N46W 46NE Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 246 N24W 19SW Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 97 N7E 83SE Moderate Low Very Wide Slightly Rough (UN) None

Volcanic High Joint 25 N65W 65NE Moderate Low Very Wide Slightly Rough (UN) None

Notes: [1] Estimated Unconfined Compressive Strength (UCS) of Intact Rock Material:

Very Low = 1‐5MPa; Low = 5‐25 Mpa; Moderate = 25‐50 Mpa; Medium High = 50‐100 Mpa; High = 100‐250 Mpa; Very High = >250 Mpa

[2] Spacing of Discontinuities:

Very Close = <60 mm; Close = 60‐200 mm; Moderate = 200‐600 mm; Wide = 0.6‐2 m; Very Wide= >2 m.

[3] Persistence (Continuity) of Discontinuities:

Very Low = <1 m; Low = 1‐3 m; Medium = 3‐10 m; High = 10‐20 m; Very High = >20 m.

[4] Separation (Aperature) of Discontinuities:

Very Tight = <0.1 mm; Tight = 0.1‐0.5 mm; Moderately Open = 0.5‐2.5 mm; Open ‐ 2.5‐10 mm; Very Wide = >10 mm.

[5] Roughness of Discontinuities:

Also Noted if Surfaces are Stepped (ST), Undulating (UN), or Planar (PL).

As shown in ISRM (1981).

TABLE C‐2

AJO‐450: GEOLOGIC RECONNAISSANCE MEASURED DISCONTINUITIES

CUSTOM AND BORDER PROTECTION TOWERS

TOHONO O’ODHAM NATION LANDS, ARIZONA

9 31.808477 ‐112.5422

7 31.808778 ‐112.5421

8 31.808646 ‐112.5422

5 31.80837 ‐112.5415

12 31.80783 ‐112.5425

10 31.808237 ‐112.5423

11 31.807962 ‐112.5424

1 31.808333 ‐112.5419

6 31.808739 ‐112.5419

2 31.80815 ‐112.5418

3 31.808135 ‐112.5417

Geophysical Logs were collected by SwExp on June 5, 2014

Features oriented to Magnetic North and corrected for borehole deviation to true orientation

Features picked/ranked by EJB Prior to July 10, 2014

The OBI image from 5.6' to 21.8' is good throughout the logged interval.

*Depth for dipping fractures is midpoint depth; for near Vertical joints/fractures and Vugs it is Top Depth

Depth* Dip Dir Tilt Aperture Classification Continuity Form Condition Filling Remark Ft Deg Deg Inch/10

6.48 257.7 25.64 17.89 305 ‐ Major Joint/Fracture C5 Very continuous ‐ wide 1 ‐ Planar 1 ‐ Rough No apparent filling Open

6.64 0.4 21.34 0.00 104 ‐ Infilled Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 1 ‐ Rough White Cemented/Filled

6.92 67.9 12.04 0.00 104 ‐ Infilled Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 1 ‐ Rough White Cemented/Filled

7.16 3.6 72.72 0.00 110 ‐ Minor Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 1 ‐ Rough No apparent filling Tight

7.20 95.9 19.31 0.00 110 ‐ Minor Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 0 ‐ Smooth No apparent filling Tight

7.97 66.4 21.03 0.00 109 ‐ Partially Open Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 1 ‐ Rough No apparent filling Partially Open

8.09 61.9 22.37 0.00 109 ‐ Partially Open Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 1 ‐ Rough No apparent filling Partially Open

9.13 136.8 8.87 0.00 109 ‐ Partially Open Joint/Fracture C2 Slightly continuous ‐ 50‐75% 1 ‐ Planar 1 ‐ Rough No apparent filling Partially Open

9.72 113.2 12.97 0.00 104 ‐ Infilled Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 0 ‐ Smooth White Cemented/Filled

9.80 154.7 30.89 0.00 109 ‐ Partially Open Joint/Fracture C2 Slightly continuous ‐ 50‐75% 1 ‐ Planar 1 ‐ Rough No apparent filling Partially Open

11.54 205.0 58.62 0.00 110 ‐ Minor Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 1 ‐ Rough No apparent filling Tight

11.86 70.4 33.32 30.99 305 ‐ Major Joint/Fracture C5 Very continuous ‐ wide 1 ‐ Planar 1 ‐ Rough No apparent filling Open

14.37 356.5 26.31 0.00 109 ‐ Partially Open Joint/Fracture C5 Very continuous ‐ wide 1 ‐ Planar 1 ‐ Rough No apparent filling Partially Open

14.47 343.4 28.34 0.00 110 ‐ Minor Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 0 ‐ Smooth No apparent filling Tight

16.73 175.8 81.57 0.00 110 ‐ Minor Joint/Fracture C5 Very continuous ‐ wide 0 ‐ Undulating/Curved 1 ‐ Rough No apparent filling Tight

17.00 340.6 29.55 0.00 104 ‐ Infilled Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 0 ‐ Smooth White Cemented/Filled

17.24 356.5 22.08 0.00 104 ‐ Infilled Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 0 ‐ Smooth White Cemented/Filled

19.87 147.2 19.84 0.00 104 ‐ Infilled Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 0 ‐ Smooth White Cemented/Filled

20.55 276.0 13.39 0.00 106 ‐ Bedding/Banding/Foliation C3 Moderately continuous 75‐100% 1 ‐ Planar 1 ‐ Rough

20.87 40.3 52.39 0.00 110 ‐ Minor Joint/Fracture C2 Slightly continuous ‐ 50‐75% 1 ‐ Planar 1 ‐ Rough No apparent filling Tight

21.03 265.9 20.46 0.00 104 ‐ Infilled Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 1 ‐ Rough White Cemented/Filled

21.18 314.5 20.72 0.00 104 ‐ Infilled Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 1 ‐ Rough White Cemented/Filled

Ranking Scheme:

100 = Black = Bottom of Casing

104 = White = In‐filled Joint/Fracture ‐ mineralogy not determined Continuity Form Filling (OBI) 106 = Green = Bedding/banding/foliation C1 Discontinuous - < 50% 0 – Undulating/curved No apparent filling 109 = Orange = Partially open Joint/Fracture C2 Slightly continuous - 50-75% 1 – Planar White soft 110 = Pink = Thin and/or discontinuous around circumference Joint/Fracture C3 Moderately continuous 75-100% 2 – Stepped White 111 = Yellow = Apparent Joint/Fracture terminates at fracture intersection C4 High continuous – thin 3 – Parting Dark soft 112 = Light Blue = Unclassified planar feature C5 Very continuous – wide 4 – Styolitic Dark 305 = Red = Wide major Joint/Fracture Sulfide/metallic 307 = Blue = Fluid Level Condition Remark Stained Black

0 – Smooth Open Stained Brown VFx = 2 Near vertical Joints/Fractures 1 – Rough Partially Open VFx‐W = 2 Wide Near vertical Joints/fractures 2 – Weathered Tight Filling (ABI) 33 = >2 near vertical Joint/fractures 3 - Brec / Crushed Cemented/Filled F6-Hard IFx = Possible drilling induced near vertical tensile fractures 4 – Offset Partially Cemented No apparent filling Bx = Breccia/Collapse Breccia

Lg V = Large Vug/ Vugs/ or Vesicles (> 6" diameter)

MV = Medium Vug/ Vugs/ or Vesicles (2‐6" diameter)

CNG = Small Vug/ Vugs/ or Vesicles (< 2" diameter)

Vein = infilled near vertical joint/fracture

TABLE C‐3

DRILL HOLE: AJO‐446 ‐ DOWNHOLE TELEVIEWER DISCONTINUITY DATA

CUSTOM AND BORDER PROTECTION TOWERS

TOHONO O’ODHAM NATION LANDS, ARIZONA

Geophysical Logs were collected by SwExp on June 9, 2014

Features oriented to Magnetic North and corrected for borehole deviation to true orientation

Features picked/ranked by EJB Prior to July 10, 2014

The OBI image from 3.0' to 20.6' is good throughout the logged interval.

*Depth for dipping fractures is midpoint depth; for near Vertical joints/fractures and Vugs it is Top Depth

Depth* Dip Dir Tilt Aperture Classification Continuity Form Condition Filling Remark Ft Deg Deg Inch/10

3.63 13.2 3.37 0.00 100 ‐ Bottom of Casing C3 Moderately continuous 75‐100% 1 ‐ Planar 0 ‐ Smooth

12.16 342.5 59.87 0.00 106 ‐ Bedding/Banding/Foliation C3 Moderately continuous 75‐100% 1 ‐ Planar 1 ‐ Rough

12.82 26.5 61.30 0.00 110 ‐ Minor Joint/Fracture C2 Slightly continuous ‐ 50‐75% 1 ‐ Planar 1 ‐ Rough No apparent filling Tight

14.97 182.3 81.16 0.00 109 ‐ Partially Open Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 1 ‐ Rough No apparent filling Partially Open

15.36 180.8 79.94 0.00 109 ‐ Partially Open Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 1 ‐ Rough No apparent filling Partially Open

16.08 192.0 74.89 0.00 109 ‐ Partially Open Joint/Fracture C2 Slightly continuous ‐ 50‐75% 1 ‐ Planar 1 ‐ Rough No apparent filling Partially Open

18.59 246.0 13.00 0.00 109 ‐ Partially Open Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 0 ‐ Smooth No apparent filling Partially Open

18.81 274.8 27.33 0.00 104 ‐ Infilled Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 0 ‐ Smooth White Cemented/Filled

19.79 308.6 33.34 0.00 104 ‐ Infilled Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 0 ‐ Smooth White Cemented/Filled

19.96 314.4 31.46 0.00 104 ‐ Infilled Joint/Fracture C3 Moderately continuous 75‐100% 1 ‐ Planar 0 ‐ Smooth White Cemented/Filled

20.61 0.0 0.00 0.00 307 ‐ Fluid Level C3 Moderately continuous 75‐100% 1 ‐ Planar 0 ‐ Smooth

Ranking Scheme:

100 = Black = Bottom of Casing Continuity Form Filling (OBI) 104 = White = In‐filled Joint/Fracture ‐ mineralogy not determined C1 Discontinuous - < 50% 0 – Undulating/curved No apparent filling 106 = Green = Bedding/banding/foliation C2 Slightly continuous - 50-75% 1 – Planar White soft 109 = Orange = Partially open Joint/Fracture C3 Moderately continuous 75-100% 2 – Stepped White 110 = Pink = Thin and/or discontinuous around circumference Joint/Fracture C4 High continuous – thin 3 – Parting Dark soft 111 = Yellow = Apparent Joint/Fracture terminates at fracture intersection C5 Very continuous – wide 4 – Styolitic Dark 112 = Light Blue = Unclassified planar feature Sulfide/metallic 305 = Red = Wide major Joint/Fracture Condition Remark Stained Black 307 = Blue = Fluid Level 0 – Smooth Open Stained Brown

1 – Rough Partially Open VFx = 2 Near vertical Joints/Fractures 2 – Weathered Tight Filling (ABI) VFx‐W = 2 Wide Near vertical Joints/fractures 3 - Brec / Crushed Cemented/Filled F6-Hard 33 = >2 near vertical Joint/fractures 4 – Offset Partially Cemented No apparent filling IFx = Possible drilling induced near vertical tensile fractures

Bx = Breccia/Collapse Breccia

Lg V = Large Vug/ Vugs/ or Vesicles (> 6" diameter)

MV = Medium Vug/ Vugs/ or Vesicles (2‐6" diameter)

CNG = Small Vug/ Vugs/ or Vesicles (< 2" diameter)

Vein = infilled near vertical joint/fracture

TABLE C‐4

DRILL HOLE: AJO‐450 ‐ DOWNHOLE TELEVIEWER DISCONTINUITY DATA

CUSTOM AND BORDER PROTECTION TOWERS

TOHONO O’ODHAM NATION LANDS, ARIZONA

AJO-TP8

26 1

70 74

65 5

AJO-446

0 100 200 FEET

AJO-TP8

AJO-446

MAP LEGEND

Tower Site

Access Road

Boring with Downhole Televiewer

Test Pit

Geologic Mapping Station

Strike and Dip of Joint

GEOLOGIC UNITS

Surficial Deposits (Quaternary)

Volcanic Rock (Miocene) with thin surficial deposits

FIGURE C-1. TOWER AJO-446 - GEOLOGIC RECONNAISSANCE MAP CUSTOM AND BORDER PROTECTION TOWERS; TOHONO O’ODHAM NATION LANDS, ARIZONA

0 100 200 FEET

AJO-TP7

60 52

7 83

814-8 9 9 78

AJO-450

AJO-TP7

AJO-450

MAP LEGEND

Tower Site

Access Road

Boring with Downhole Televiewer

Test Pit

Geologic Mapping Station

Strike and Dip of Joint

GEOLOGIC UNITS

Volcanic Rock (Miocene) with thin surficial deposits

Tch

Tch

Tch

FIGURE C-2. TOWER AJO-450 - GEOLOGIC RECONNAISSANCE MAP CUSTOM AND BORDER PROTECTION TOWERS; TOHONO O’ODHAM NATION LANDS, ARIZONA