140R4026R0002_Attachment_3_-_00_00_02A_GeologyDwgsAndLogs_NGWSP-BLK2-3-HDD_11x17_20251027.pdf

PDF 41 MB Posted Nov 17, 2025

Attached to: NGWSP BLOCK 2-3 HDD
Solicitation number: 140R4026R0002
Issued by: Department of the Interior Bureau of Reclamation

About this file

Written by GovTribe AI · Nov 17, 2025

This is a detailed geological exploration document containing multiple drill hole and test pit logs for the Navajo-Gallup Water Supply Project's Reach 2 and Reach 3 pipeline alignments. The document provides comprehensive geotechnical data for a proposed water supply infrastructure project in New Mexico, with drilling locations spanning multiple counties and focusing on the San Juan Lateral pipeline route.

The geological investigations reveal a complex subsurface stratigraphy predominantly consisting of Quaternary Alluvium (Qal), Cretaceous Pictured Cliffs Sandstone (Kpc), Cretaceous Lewis Shale (Kl), and Cretaceous Cliff House Sandstone (Kch). Drill holes and test pits range from 21 to 120 feet in depth, with detailed logs documenting soil classifications, rock types, weathering conditions, fracture densities, and core recovery percentages. Laboratory testing was conducted on soil samples, analyzing particle size distributions, moisture content, and specific gravity. The geological data will be critical for engineering design, determining pipeline installation methods, and assessing ground stability for horizontal directional drilling (HDD) and other construction techniques along the project alignment.

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NAPI Turnout

Pumping Plant (1)

Dona Ana

Los Alamos Mora

Taos

Sierra

Sandoval

Lincoln

Union

Valencia Curry

Hidalgo

Chaves

De Baca

Grant

Santa Fe San Miguel

Cibola

Socorro Catron

Eddy

Harding

Rio Arriba

Guadalupe

Quay Bernalillo

Roosevelt

Otero

Luna

Lea

Torrance

Colfax

McKinley

San Juan

NAPI Turnout

Exisiting 42" PNM Pipeline

Pumping Plant (1)

T H

S A

SHEET

B U

U O

F R

O N

U .S

A R

O F

C A D

A ut oC A D

S T

C A D

A M

-5

-6

-R D

-1 .D

W G

S T

S A V

D A

-0 3-

S T

S A V

B Y

O R N

B U

R G

N A V A

-G A

U P

W A

R S

R O

C T

S A N

J U

A N

L A

R A L

C H

N M

V E

LOCATION MAP

FARMINGTON, NM

1695-529-60352

2023-02-01

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -

D. Thornburg

Chris Beyer

Beyer, Christopher R

Gladden, Ryan L P.E.

San Juan River Intake (Reach 1)

Navajo Nation Municipal Pipeline

Existing PNM Pipeline

Shumway Wash HDD

San Juan Lateral Water Treatment Plant Regulating Tank Site

N O

-0 3-

B ey er

C hr is to ph er

D A

N M

A N

D N

R B Y

Feet 0 5280 10560

Feet

0 1320 2640

U S H

W A Y 64

INDIAN SERVICE ROUTE 36N 367

IAN

SERVIC

E RO

TE 36

N 367

RD 6815

R D

RTE 362

RD 6800

J u a n

S a n

R i v e r

FRANK CHEE WILLETTO

DAM & RESERVOIR

NO NAME ROAD

R2-

-5

R2-

-1

R2-

-1

R-2

DHR2-

-1

DHR2-

-1

DHR2-

-1

DHR2-

-1

DHR2-

-1

DHR2-

-1

DHR2-

-8

DHR2-

-1

R2-

-1

R2-

-4

R2-

-2

R2-

-2

0TP

R2-

-1

R2-

-1

8TP

R2-

-1

R2-

-1

DHR2-

-9

DHR2-

-4

DHR2-

-3

DHR2-

-2

R2-

-1

R2-

-1

DHR2-

-3

DHR2-

-3

3OWR2-23-21

PWR2-23-1

OWR2-23-22

DHR2-

-3

DHR2-

-3

DHR2-

-3

DHR2-

-3

TPR2-23-24

R2-

-2

TPR2-23-22

R2-

-2

NEH

ANAZA

D H

DD E

nt ry

DRILL HOLE Point Table

TEST PIT Point Table

DRILL HOLE Point Table

Description

DHR2-22-1

DHR2-22-2

DHR2-22-3

DHR2-22-4

DHR2-22-8

DHR2-22-9

DHR2-22-10

DHR2-22-12

DHR2-22-13

DHR2-22-15

DHR2-22-18

DHR2-22-19

OWR2-22-16

OWR2-22-17

Northing

2104541.06

2100979.33

2100550.85

2099864.28

2097348.74

2096759.29

2096310.14

2093768.27

2090908.63

2090491.70

2086760.03

2082528.18

2090009.86

2089796.70

Easting

2544828.18

2542943.10

2542966.29

2542934.78

2542728.26

2542803.54

2543107.81

2543007.10

2543463.69

2543056.35

2539997.84

2538924.19

2542892.49

2542846.16

Longitude

W108° 26' 31.46"

W108° 26' 54.35"

W108° 26' 54.03"

W108° 26' 54.36"

W108° 26' 56.70"

W108° 26' 55.73"

W108° 26' 51.95"

W108° 26' 52.99"

W108° 26' 47.16"

W108° 26' 52.13"

W108° 27' 29.41"

W108° 27' 42.26"

W108° 26' 54.10"

W108° 26' 54.66"

Latitude

N36° 46' 55.27"

N36° 46' 19.93"

N36° 46' 15.69"

N36° 46' 08.90"

N36° 45' 44.02"

N36° 45' 38.19"

N36° 45' 33.77"

N36° 45' 08.63"

N36° 44' 40.38"

N36° 44' 36.23"

N36° 43' 59.14"

N36° 43' 17.22"

N36° 44' 31.46"

N36° 44' 29.35"

Longitude (DEC DEG)

W108.44207118

W108.44842986

W108.44834128

W108.44843382

W108.44908364

W108.44881371

W108.44776517

W108.44805327

W108.44643228

W108.44781341

W108.45816879

W108.46173785

W108.44836206

W108.44851551

Latitude (DEC DEG)

N36.78201839

N36.77220234

N36.77102585

N36.76913951

N36.76222648

N36.76060876

N36.75938047

N36.75239696

N36.74455045

N36.74339811

N36.73309399

N36.72145112

N36.74207175

N36.74148545

Description

DHR2-23-33

DHR2-23-34

DHR2-24-35

DHR2-24-36

DHR2-24-37

DHR2-24-38

OWR2-23-21

OWR2-23-22

PWR2-23-1

Northing

2103773.26

2103678.76

2099001.53

2098798.60

2098285.01

2097848.79

2105524.24

2105631.50

2105565.38

Easting

2544923.53

2544868.29

2542863.23

2542853.59

2542805.92

2542805.13

2544676.27

2544629.92

2544652.17

Longitude

W108° 26' 30.22"

W108° 26' 30.90"

W108° 26' 55.17"

W108° 26' 55.28"

W108° 26' 55.82"

W108° 26' 55.80"

W108° 26' 33.40"

W108° 26' 33.98"

W108° 26' 33.70"

Latitude

N36° 46' 47.68"

N36° 46' 46.74"

N36° 46' 00.37"

N36° 45' 58.36"

N36° 45' 53.28"

N36° 45' 48.96"

N36° 47' 04.98"

N36° 47' 06.04"

N36° 47' 05.38"

Longitude (DEC DEG)

W108.44172892

W108.44191547

W108.44865915

W108.44868762

W108.44883907

W108.44883219

W108.44261126

W108.44277189

W108.44269446

Latitude (DEC DEG)

N36.77991116

N36.77965061

N36.76676855

N36.76621099

N36.76479948

N36.76360131

N36.78471621

N36.78501002

N36.78482878

Description

TPR-22-12

TPR2-22-2

TPR2-22-4

TPR2-22-5

TPR2-22-10

TPR2-22-13

TPR2-22-14

TPR2-22-16

TPR2-22-17

TPR2-22-18

TPR2-22-19

TPR2-22-20

Northing

2089269.82

2102742.64

2101229.88

2100225.77

2092519.40

2089143.60

2089032.00

2086955.89

2085802.29

2084507.34

2083523.84

2081704.72

Easting

2542018.61

2544271.15

2543120.37

2542966.96

2543840.65

2541859.41

2541623.29

2540138.24

2539708.33

2539521.94

2539294.14

2538678.55

Longitude

W108° 27' 04.78"

W108° 26' 38.16"

W108° 26' 52.19"

W108° 26' 53.99"

W108° 26' 42.65"

W108° 27' 06.73"

W108° 27' 09.62"

W108° 27' 27.70"

W108° 27' 32.89"

W108° 27' 35.07"

W108° 27' 37.79"

W108° 27' 45.21"

Latitude

N36° 44' 24.09"

N36° 46' 37.45"

N36° 46' 22.42"

N36° 46' 12.48"

N36° 44' 56.33"

N36° 44' 22.83"

N36° 44' 21.71"

N36° 44' 01.08"

N36° 43' 49.65"

N36° 43' 36.83"

N36° 43' 27.09"

N36° 43' 09.07"

Longitude (DEC DEG)

W108.45132823

W108.44393404

W108.44783012

W108.44833189

W108.44518084

W108.45186874

W108.45267209

W108.45769401

W108.45913538

W108.45974251

W108.46049785

W108.46255751

Latitude (DEC DEG)

N36.74002364

N36.77706895

N36.77289364

N36.77013296

N36.74898138

N36.73967412

N36.73936341

N36.73363449

N36.73045819

N36.72689801

N36.72419255

N36.71918488

Description

TPR2-23-22

TPR2-23-23

TPR2-23-24

TPR2-25-23 NEHANAZAD HDD Entry

Northing

2104789.90

2105305.60

2105883.84

2089124.97

Easting

2544584.37

2544705.17

2544541.43

2541237.84

Longitude

W108° 26' 34.47"

W108° 26' 33.03"

W108° 26' 35.09"

W108° 27' 14.36"

Latitude

N36° 46' 57.71"

N36° 47' 02.82"

N36° 47' 08.53"

N36° 44' 22.60"

Longitude (DEC DEG)

W108.44290911

W108.44250782

W108.44307955

W108.45398962

Latitude (DEC DEG)

N36.78269760

N36.78411617

N36.78570154

N36.73961191

TEST PIT Point Table(Explorations within 200 feet of latest alignment and Included on Geologic Design Data Report, San Juan Lateral Reaches 2 and 3 San Juan Generating Station Alignment. February 2023)

(Explorations within 200 feet of latest alignment and Included on Geologic Design Data Report, San Juan Lateral Reaches 2 and 3 San Juan Generating Station Alignment. February 2023)

(Post Geologic Design Data Report, San Juan Lateral Reaches 2 and 3 San Juan Generating Station Alignment February 2023.)

T H

S A

SHEET

B U

U O

F R

O N

U .S

A R

O F

C A D

A ut oC A D

S T

C A D

A M

-5

-6

-R D

-1 .D

W G

S T

S A V

D A

-0 8-

S T

S A V

B Y

O R N

B U

R G

N A V A

-G A

U P

W A

R S

R O

C T

S A N

J U

A N

L A

R A L

C H

N M

V E

LOCATION OF

EXPLORATION

FARMINGTON, NM

1695-529-60355

2023-02-02

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -

Beyer, Christopher

D. Thornburg

Chris Beyer

Beyer, Christopher R

Gladden, Ryan L P.E.

1. Coordinates based on New Mexico State Plane West Zone, feet. (NAD83).

2. The Ground to New Mexico State Plane West Zone Grid conversion factor is 0.999713762328.

GENERAL NOTES

General Map...........................................1695-529-60351.

Location Map..........................................1695-529-60352.

General Geologic Legend, Explanation and Notes....................................................1695-529-60340.

Surface Geology...............................1695-529-60357 thru 1695-529-60362.

REFERENCE DRAWINGS

0 1000' 2000'

N O 1

A D

S U

R V

L O

C A

O N

S O

F A D

A L

O R A

O N

G N

C A

O N

O V

A N

N O 2

-0 8-dt

A D

-2

A N

A Z A D

H D

D E nt ry

Site 2-5

TPR2-22-5

DHR2-22-10

DHR2-22-8

2-22-4

DHR2-22-9

DHR2-22-4

DHR2-22-3

DHR2-22-2

S H

DHR2-24-38DHR2-24-37

DHR2-24-36DHR2-24-35

Intermittent pondS H

M W

A Y

A R

R O Y O

F a r m e r s M u t u a l D i t c h

D i t c h

F a r m e r s M u t u a l c

Qal

Kpc

Qal

Kpc

Qal

Kpc

Qal

Pond

Embankment and intermittent pond

Qtg

Intermittent pond

Qal

Embankment

Kpc

Qal

Feet 1:2400

4002000 100

1. Coordinates based on New Mexico State Plane West Zone, feet. (NAD83).

2. The Ground to New Mexico State Plane West Zone Grid conversion factor is 0.999713762328

3. Contour interval is 2 feet.

GENERAL NOTES

REFERENCE DRAWINGS

General Map..........................................1695-529-60351.

Location Map.........................................1695-529-60352.

Location of Exploration Map.....................1695-529-60355.

General Geologic Legend, Explanation and Notes....................................................1695-529-60340.

SHEET

B U

U O

F R

O N

U .S

A R

O F

C A D

A ut oC A D

S T

C A D

A M

-5

-6

-R D

-2 .D

W G

S T

S A V

D A

-0 3-

S T

S A V

B Y

O R N

B U

R G

N A V A

-G A

U P

W A

R S

R O

C T

S A N

J U

A N

L A

R A L

C H

P N

M O

SURFACE GEOLOGY

FARMINGTON, NM

1695-529-60358

N O

A D

G N

D D

G Y

C O

L H

S N

N M

S H

RD 6815

R D

Jewett Valley Ditch

DHR2-22-13

DHR2-22-12

2-22-10

TPR2-22-10

HDD Entry Pit

Kpc

Qtg

Qtg pc

Qal

Feet 1:2400

4002000 100

1. Coordinates based on New Mexico State Plane West Zone, feet. (NAD83).

2. The Ground to New Mexico State Plane West Zone Grid conversion factor is 0.999713762328

3. Contour interval is 2 feet.

GENERAL NOTES

REFERENCE DRAWINGS

General Map..........................................1695-529-60351.

Location Map.........................................1695-529-60352.

Location of Exploration Map.....................1695-529-60355.

General Geologic Legend, Explanation and Notes....................................................1695-529-60340.

SHEET

B U

U O

F R

O N

U .S

A R

O F

C A D

A ut oC A D

S T

C A D

A M

-5

-6

-R D

-3 .D

W G

S T

S A V

D A

-0 3-

S T

S A V

B Y

O R N

B U

R G

N A V A

-G A

U P

W A

R S

R O

C T

S A N

J U

A N

L A

R A L

C H

P N

M O

SURFACE GEOLOGY

FARMINGTON, NM

1695-529-60359

N O

D A

N M

S A N JUAN R I V E R

E 3

NO NAME ROAD

NAVAJO NATION M

UNICIPLE PIPELINE (NNM

Site 2-7TPR2-21-11

TPR2-22-13

TPR-22-12

DHR2-22-13

DHR2-22-15

TPR2-22-14

WELLDHR2-22-16

WELLDHR2-22-17

Qal

Kpc

Fill

Kpc

Qtg

Qal

Kpc

Fill

Qal

Qtg

Qal

Qal Kl

Kpc

EET 3

S H

EET 5

TPR2-25-23 NEHANAZAD HDD Entry

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -

Beyer, Christopher R

D.Thornburg

Beyer, Christopher R

Gladden, Ryan L P.E.

Feet 1:2400

4002000 100

1. Coordinates based on New Mexico State Plane West Zone, feet. (NAD83).

2. The Ground to New Mexico State Plane West Zone Grid conversion factor is 0.999713762328

3. Contour interval is 2 feet.

GENERAL NOTES

REFERENCE DRAWINGS

General Map..........................................1695-529-60351.

Location Map.........................................1695-529-60352.

Location of Exploration Map.....................1695-529-60355.

General Geologic Legend, Explanation and Notes....................................................1695-529-60340.

CLReach 2 Pipeline

SHEET

B U

U O

F R

O N

U .S

A R

O F

C A D

A ut oC A D

S T

C A D

A M

-5

-6

-R D

-4 .D

W G

S T

S A V

D A

-0 3-

S T

S A V

B Y

O R N

B U

R G

N A V A

-G A

U P

W A

R S

R O

C T

S A N

J U

A N

L A

R A L

C H

P N

M O

SURFACE GEOLOGY

FARMINGTON, NM

1695-529-60360

2023-01-23

EET 3

S H

EET 5

N O

¦R_DT¦ £RA£

A D

G N

T A N

D H

D D

G N

N O

¦R_DT¦ £RA£

-0

8-dt

A D

-2

A N

A Z A D

H D

D E nt ry

AutoCAD SHX Text Jewett Valley Ditch

AutoCAD SHX Text

ALWAYS THINK

AutoCAD SHX Text

SAFETY

RTE 362

NO NAME ROAD

RTE

TPR2-21-15

TPR2-22-17

DHR2-22-18

TPR2-22-19

TPR2-22-18

TPR2-22-16

Kpc

Kpc Kpc

Kpc

Qal

Kpc

Qal Qal Qal

Qal

Qeo

Qal

Kpc

00 22

00SH

Feet 1:2400

4002000 100

1. Coordinates based on New Mexico State Plane West Zone, feet. (NAD83).

2. The Ground to New Mexico State Plane West Zone Grid conversion factor is 0.999713762328

3. Contour interval is 2 feet.

GENERAL NOTES

REFERENCE DRAWINGS

General Map..........................................1695-529-60351.

Location Map.........................................1695-529-60352.

Location of Exploration Map.....................1695-529-60355.

General Geologic Legend, Explanation and Notes....................................................1695-529-60340.

SHEET

B U

U O

F R

O N

U .S

A R

O F

C A D

A ut oC A D

S T

C A D

A M

-5

-6

-R D

-5 .D

W G

S T

S A V

D A

-0 3-

S T

S A V

B Y

O R N

B U

R G

N A V A

-G A

U P

W A

R S

R O

C T

S A N

J U

A N

L A

R A L

C H

P N

M O

SURFACE GEOLOGY

FARMINGTON, NM

1695-529-60361

N O

A D

G N

T A N

D H

D D

G N

S H

EET 6

O N

STATION

SAN JUAN RIVER - HDD GEOLOGIC PROFILE

2174+50 2176+00 2178+00 2180+00 2182+00 2184+00 2186+00 2188+00

D H

R 2-

-1

El ev

Pr oj

T.D. 80.0

10.5

COBBBLES AND BOULDERS

SHALE

R 2-

-1

T.D. 80.0

12.9

COBBBLES AND BOULDERS

SHALE

El ev

(P ro j.

L t

D H

R 2-

-1

El ev

Pr oj

R t

T.D. 120.0

COBBBLES AND BOULDERS

SHALE

SHALE(Kpc)

SHALE(Km)

R 2-

-1

T.D. 50.0

12.9

SHALE

El ev

(P ro j.

L t

COBBBLES AND BOULDERS

Kpc

Qal

K Qal

Qal

DHR2-21-14

DHR2-21-13

DHR2-22-15

WELLDHR2-21-16

WELLDHR2-21-17

Jew ett V alley D itch

Qal

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -Deputy Construction Engineer

0 100'50'

1. Coordinates based on New Mexico State Plane West Zone, feet. (NAD83).

2. The Ground to New Mexico State Plane West Zone Grid conversion factor is 0.999713762328

3. Contour interval is 2 feet.

GENERAL NOTES

General Map..........................................1695-529-60351.

Location Map.........................................1695-529-60352.

Location of Exploration Map.....................1695-529-60355.

General Geologic Legend, Explanation and Notes....................................................1695-529-60340.

Surface Geology...............................1695-529-60357 thru 1695-529-60362.

REFERENCE DRAWINGS

SAN JUAN RIVER - HDD

PLAN VIEW

SHEET

B U

U O

F R

O N

U .S

A R

O F

C A D

A ut oC A D

S T

C A D

A M

-5

-6

-R D

-1 .D

W G

S T

S A V

D A

-0 1-

S T

S A V

B Y

O R N

B U

R G

N A V A

-G A

U P

W A

R S

R O

C T

S A N

J U

A N

L A

R A L

C H

SAN JUAN RIVER HDD

GEOLOGIC PROFILE

FARMINGTON, NM

1695-529-60388

2023-01-31

G10

D H

R 2-

-7

El ev

Pr oj

R t

T.D. 40.0

12.1

SHALE

24.2 25.3 38.5 39.6

1.0

SHALE

O N

STATION

FARMERS MUTUAL DITCH - JACK AND BORE

GEOLOGIC PROFILE

2094+00 2096+00 2098+00 2100+00 2101+00

D H

R 2-

-8

El ev

Pr oj

R t

T.D. 40.0

28.2 g(CL)s

31.2 38.5

27.5

SHALE

22.7

19.3SM

Qal

Kpc

DHR2-21-8

DHR2-21-72094+

2097+

2098+

2099+

2100+

2101+

2102+

2103+

2104+

ROAD 6800

MUTUAL

DITCH

Qal

Kpc

Qal

QalEmbankment l

Qal

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL - Deputy Construction Engineer

0 100'50'

1. Coordinates based on New Mexico State Plane West Zone, feet. (NAD83).

2. The Ground to New Mexico State Plane West Zone Grid conversion factor is 0.999713762328

3. Contour interval is 2 feet.

GENERAL NOTES

General Map..........................................1695-529-60351.

Location Map.........................................1695-529-60352.

Location of Exploration Map.....................1695-529-60355.

General Geologic Legend, Explanation and Notes....................................................1695-529-60340.

Surface Geology...............................1695-529-60357 thru 1695-529-60362.

REFERENCE DRAWINGS

FARMERS MUTUAL DITCH - JACK AND BORE

PLAN VIEW

SHEET

B U

U O

F R

O N

U .S

A R

O F

C A D

A ut oC A D

S T

C A D

A M

-5

-6

-R D

-1 .D

W G

S T

S A V

D A

-0 1-

S T

S A V

B Y

O R N

B U

R G

N A V A

-G A

U P

W A

R S

R O

C T

S A N

J U

A N

L A

R A L

C H

FARMERS MUTUAL DITCH

HDD GEOLOGIC PROFILE

FARMINGTON, NM

1695-529-60389

2023-01-31

G11

NAPI Turnout

Pumping Plant (1)

NAPI Turnout

Pumping Plant (1)

T H

S A

SHEET

B U

U O

F R

O N

U .S

A R

O F

C A D

A ut oC A D

S T

C A D

A M

-5

-6

-R D

-1 .D

W G

S T

S A V

D A

-0 3-

S T

S A V

B Y

O R N

B U

R G

N A V A

-G A

U P

W A

R S

R O

C T

S A N

J U

A N

L A

R A L

C K

S H

U M

W A Y

W A S H

D D

LOCATION MAP

FARMINGTON, NM

1695-529-60433

2025-03-26

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL

Beyer, Christopher R

D. Thornburg

Graham, Kris

Beyer, Christopher R

Gladden, Ryan L P.E.

Reach 4A

San Juan Lateral Water Treatment Plant

San Juan River Intake (Reach 1)

Reach 2

Shumway Wash HDD

Existing PNM Pipeline

Shumway Wash HDD

San Juan Lateral Water Treatment Plant Regulating Tank Site

Feet 0 5280 10560

Feet 0 1320 2640

G12

Site 2-5

2403+85.07

END HDD - EXIT PIT

Proposed HDD

2419+16.28

END HDD - ENTRY PIT

Kpc

Qal Qal

Qal

Kpc

Kpc Qtg

Qal

Embankment

Proposed Reach 2 Pipeline

Qal

SHUMWAY HDD GEOLOGIC PROFILE

2399+00 2400+00 2405+00 2410+00 2415+00 2420+00 2424+00

D H

R 2-

-3

El ev

Pr oj

R t.

T.D. 19.8'

15.2 SS

D H

R 2-

-3

El ev

Pr oj

R t.

19.0 20.0 20.8 22.8 25.8 26.3 39.2 41.8 45.0 50.0 55.0

T.D. 60.0'

CLSTN

SS/SLTSTN/CLSTN

CLSTN

SLTSTN

SS/SLTSTN/CLSTN

D H

R 2-

-3

El ev

Pr oj

R t.

24.0 25.0 32.9 39.3 58.4

CLSTN

SLTSTN

SS/SLTSTN/CLSTN

T.D. 79.1'78.1

El ev

Pr oj

R t.

D H

R 2-

-3

28.2 37.9 45.5 50.5 57.4

CLST/SH/SS

SS/CLST/SH

T.D. 95.5'

D H

R 2-

-8

El ev

Pr oj

T.D. 40.0 SHALE

28.2

38.4 31.2

SHALE

Qal Qal Qal

Qal Qal

Kpc Kpc Kpc

Kpc Kpc

Feet 1:2400

4002000 100

1. Coordinates based on New Mexico State Plane West Zone, feet. (NAD83).

2. The Ground to New Mexico State Plane West Zone Grid conversion factor is 0.999713762328

3. Contour interval is 2 feet.

GENERAL NOTES

REFERENCE DRAWINGS

General Map..........................................1695-529-60351.

Location Map.........................................1695-529-60433.

General Geologic Legend, Explanation and Notes......................................................1695-529-60340.

Location of Exploration Map.....................1695-529-60355.

SHEET

B U

U O

F R

O N

U .S

A R

O F

C A D

A ut oC A D

S T

C A D

A M

-5

-6

-R D

-1 .D

W G

S T

S A V

D A

-0 2-

S T

S A V

B Y

O R N

B U

R G

N A V A

-G A

U P

W A

R S

R O

C T

S A N

J U

A N

L A

R A L

S H

U M

W A Y

W A S H

D D

GEOLOGIC PROFILE

FARMINGTON, NM

1695-529-60434

G13

T H

S A

SHEET

B U

U O

F R

O N

U .S

A R

O F

C A D

A ut oC A D

S T

C A D

A M

-5

-6

-R D

-1 .D

W G

S T

S A V

D A

-0 1-

S T

S A V

B Y

O R N

B U

R G

N A V A

-G A

U P

W A

R S

R O

C T

S A N

J U

A N

L A

R A L

C K

V E

GENERAL GEOLOGIC

LEGEND, EXPLANATIONS

AND NOTES

FARMINGTON, NM

1695-529-60340

2023-01-23

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -

CHRIS BEYER

D THORNBURG

CHRIS BEYER

Beyer, Christopher R

Gladden, Ryan L P.E.

Deputy Construction Engineer

GENERAL GEOLOGIC LEGEND

STRATIGRAPHY

GEOLOGIC EXPLANATION GENERAL GEOLOGIC NOTES

BEDROCK ABBREVIATIONS:

SS- SANDSTONE

CLSTN - CLAYSTONE

SLTSTN - SILTSTONE

Kmf Qal

DHR2-21-8

TPR2-21-5

DHR2-21-8

TPR2-21-5

Qal

Qtg

Kpc

Kch

Kmf

Kpl

D H

R 2-

-1

El ev

Pr oj

T.D. 80.0

10.5

COBBLES AND BOULDERS

SHALE

G14

3550+00

3570+

55055

DHPNM-21-6

DHPNM-21-7

DHPNM-21-8

TPR3-21-18

TPR3-21-19

TPR3-21-21

TPR

Kpl Kmf

Qal

Kmf

KmfKch

Qtg

Qal

QalQal

Kch

Qal

Kch

KmfKl

Qal

Archy wall

Coal

Qal

Kpl

Kmf

Kmf Kch

3540+00

Feet 1:2400

4002000 100

1. Coordinates based on New Mexico State Plane West Zone, feet. (NAD83).

2. The Ground to New Mexico State Plane West Zone Grid conversion factor is 0.999713762328.

3. Contour interval is 2 feet.

GENERAL NOTES

General Map..........................................1695-529-60351.

Location Map.........................................1695-529-60353.

Location of Exploration...........................1695-529-60354.

General Geologic Legend, Explanation and Notes....................................................1695-529-60340.

REFERENCE DRAWINGS

SHEET

B U

U O

F R

O N

U .S

A R

O F

C A D

A ut oC A D

S T

C A D

A M

-5

-6

-R D

-5 .D

W G

S T

S A V

D A

-0 1-

S T

S A V

B Y

O R N

B U

R G

N A V A

-G A

U P

W A

R S

R O

C T

S A N

J U

A N

L A

R A L

C H

P N

M O

SURFACE GEOLOGY

FARMINGTON, NM

1695-529-60367

2023-01-23

G15

BOTTOM OF HOLE

All measurements are from ground level and reported in feet unless otherwise noted

DRILLED BY:

Upper Colorado Drill Crew DRILLER(S): M. Howell HELPER(S): A. Heath

PURPOSE:

Preconstruction soil and bedrock pipeline alignment/ HDD investigation.

DRILL EQUIPMENT:

CME Model 85 truck mounted rotary drill rig.

DRILL METHOD:

0.0 to 4.8 ft: 4.25-inch HSA with pilot bit.

4.8 to 19.8 ft: 4.25-inch HSA with dry core system and SPT sampling.

DRILLING MEDIUM:

0.0 to 19.8 ft: None

CASING RECORD/

DRILLING NOTES:

0.0 to 4.8: HSA with pilot bit

4.8 to 7.3 ft: FADC

7.3 to 9.8 ft: FADC

9.8 to 12.3 ft: FADC

12.3 to 14.8 ft: FADC

14.8 to 19.8 ft: FADC Casing removed.

HOLE COMPLETION:

0.0 to 19.8 ft: Bentonite

SAMPLING:

4.8 to 6.3 ft: SPT 1

7.3 to 8.8 ft: SPT 2

9.8 to 11.3 ft: SPT 3

12.3 to 13.8 ft: SPT 4

Discontinued SPTs due to flowing sands.

0.0 to 15.2 ft: QUATERNARY ALLUVIUM (Qal)

0.0 to 4.0 ft: CLAYEY SAND (SC) About 80% predominately fine sand, trace medium to coarse sand; about 20% fines with low plasticity, low dry strength and low toughness; maximum size, fine sand; brown and moist, roots; strong reaction with HCl.

4.0 to 7.3 ft: POORLY GRADED SAND WITH SILT (SP-SM) About 90% predominately fine sand; about 10% nonplastic fines with rapid dilatancy and no dry strength; maximum size, fine sand; brown and moist; strong reaction with HCl.

7.3 to 8.4 ft: CLAYEY SAND (SC) About 80% predominately fine sand, with trace medium to coarse sand; about 20% fines with low plasticity, low dry strength and low toughness; maximum size, fine sand; brown and moist; strong reaction with HCl.

8.4 to 11.8 POORLY GRADED SAND (SP) About 95% fine sand; trace medium to coarse sand and fine gravel; about 5% nonplastic fines with rapid dilatancy and no dry strength; maximum size, 20mm; strong reaction with HCl.

11.8 to 15.2 ft: POORLY GRADED SAND WITH GRAVEL(SP)g About 75% fine sand; trace medium to coarse sand; about 15% fine to coarse subangular gravel; about 5% nonplastic fines with rapid dilatancy and no dry strength; maximum size, 75mm; strong reaction with HCl.

15.2 to 19.8 ft: CRETACEOUS PICTURED CLIFFS (Kpc)

15.2 to 19.8 ft: SANDSTONE Fine grained, brown to gray in color, argillaceous; soft (H6) and intensely to moderately weathered (W6), to moderately hard (H4) and slightly to moderately weathered (W4);

moderately bedded, calcite veins and claystone laminations along bedding planes; easily separates along bedding planes.

STRATIGRAPHY:

0.0 to 15.2 ft: QUATERNARY ALLUVIUM (Qal)

15.2 to 19.8 ft: CRETACEOUS PICTURED CLIFFS (Kpc)

Qal

Kpc

sank sank

SP-SM

(SP)g

5118.5

5115.2

5114.1

5110.7

5107.3

5102.7

Bentonite seal with NO pipe

Clayey Sand Poorly Graded Sand with Silt

Poorly-graded Sand Poorly Graded Sand with Gravel

Sandstone

SHEET 1 OF 1 DRILL HOLE DHR2-24-35

N G

W S

P R

O C

K S

H U

M W

A Y

W A

S H

H D

D D

L L

O G

S .G

P J

T S

T D

U S

L A

B .G

GROUND ELEVATION: 5122.5 ft NAVD88

HOLE LOGGED BY: C. Beyer

REVIEWED BY: K.Graham

DEPTH TO BEDROCK: 15.2 ft

WATER DEPTH MEASURED ON: 9/14/2024 TOP OF CASING ELEVATION: NA

ANGLE FROM HORIZONTAL: -90oBEGUN: 9/13/2024 FINISHED: 9/13/2024

NOTES

H O

O M

TOTAL DEPTH: 19.8 ft

FEATURE: Reach 2

G E

U N

D E

P T

S S

A T

O N

T A

C T

D E

P T

H S

COORDINATES: N 2099001.5 E 2542863.2 NAD83

CLASSIFICATION AND

PHYSICAL CONDITION

GEOLOGIC LOG OF DRILL HOLE NO. DHR2-24-35 SHEET 1 OF 1

GRAPHIC LEGEND:Nomenclature for 'Engineering Properties' and 'Classification and Physical Condition' columns is used in convention with the Bureau of Reclamation Engineering Geology Field Manual, Vol. I [Unified Soil Classification System (USCS) - USBR 5000, 5005 standards (Chpt. 3); and composite drawings 40-D-6493, 40-D-6499 - 'Standard Descriptors & Descriptive Criteria for Rock & Discontinuities' (Chpts. 4, 5 respectively)].

Abbreviations: HSA= hollow stem auger; NA= not available; ft= feet; NE= not encountered; NP= nonplastic; NR= no recovery; HCl= hydrochloric acid; FeOx= iron oxide; CaCOx= calcium carbonate MnOx= manganese Oxide;

SPT= standard penetration test; CA= California sample; FADC= flight auger dry core; HQ3= coring system; SS= sandstone; SLTST= siltstone; SH= shale; CLSTN= claystone; = water level.

*All angles measured from horizontal axis at zero degrees unless otherwise denoted*

H ar dn es s

F ra ct ur e D en si ty

W ea th er in g

LOCATION: Pipeline Alignment HDD

E C

O V

E R

PROJECT: Navajo Gallup Water Supply Project STATE: New Mexico

H O

Q D

B lo w s pe r

F oo t (S am pl e In te rv al

ENGINEERING PROPERTIES

COMMENTS:

DEPTH TO WATER & ELEVATION: 6.8 ft (5115.7)

5115.7

G16

All measurements are from ground level and reported in feet unless otherwise noted.

DRILLED BY:

Upper Colorado Drill Crew DRILLER: M. Howell HELPER: A. Heath

PURPOSE:

Preconstruction soil and bedrock pipeline alignment/ HDD investigation.

DRILL EQUIPMENT:

CME Model 85 truck mounted rotary drill rig.

DRILL METHOD:

0.0 to 4.5 ft: 4.25-inch HSA with pilot bit.

4.8 to 19.5 ft: 4.25-inch HSA with dry core system and SPT sampling.

19.5 to 60.0 ft: HQ3 diamond core drilling system with 5-foot-long split tube sample barrel.

DRILLING MEDIUM:

0.0 to 19.5 ft: None

19.5 to 60.0 ft: Water

CASING RECORD/ DRILLING NOTES:

0.0 to 4.5 ft: HSA with pilot bit

4.5 to 9.5 ft: FADC

9.5 to 14.5 ft: FADC

14.5 to 19.5 ft: FADC

19.5 to 20.0 ft: HQ3

20.0 to 25.0 ft: HQ3

25.0 to 30.0 ft: HQ3

30.0 to 35.0 ft: HQ3

35.0 to 40.0 ft: HQ3

40.0 to 45.0 ft: HQ3

45.0 to 50.0 ft: HQ3

50.0 to 55.0 ft: HQ3

55.0 to 60.0 ft: HQ3 Casing removed.

HOLE COMPLETION:

0.0 to 60.0 ft: Bentonite

SAMPLING:

A 27.8 to 29.1 ft: HQ3 wrapped core B 25.0 to 25.8 ft: HQ3 wrapped core C 35.0 to 35.9 ft: HQ3 wrapped core D 45.3 to 46.3 ft: HQ3 wrapped core

0.0 to 19.0 ft: QUATERNARY ALLUVIUM (Qal)

0.0 to 4.5 ft: CLAYEY SAND (SC) About 70% predominately fine sand; trace medium to coarse sand; about 30% fines with medium plasticity, medium dry strength and medium toughness; maximum size, fine sand;

brown and dry, moist below 2.0 ft; strong reaction with HCl.

4.5 to 8.3 ft: POORLY GRADED SAND WITH GRAVEL(SP)g About 75% fine sand; trace medium to coarse sand; about 15% fine to coarse subangular gravel; about 5% nonplastic fines with rapid dilatancy and no dry strength; maximum size, 50mm; wood fragments; strong reaction with HCl.

8.3 to 19.0 ft: POORLY GRADED SAND (SP) About 90% fine sand; trace medium to coarse sand and fine gravel; about 10% nonplastic fines with rapid dilatancy and no dry strength; moist, wet below 9.3 ft; maximum size, 20mm;

strong reaction with HCl.

19.0 to 60.0 ft: CRETACEOUS PICTURED CLIFFS (Kpc)

19.0 to 20.0 ft: SANDSTONE Fine grained, brown to gray in color, and argillaceous; soft (H6) and intensely to moderately weathered (W6) to moderately hard (H4) and moderately to slightly weathered (W4), moderately bedded and easily separates along bedding planes; calcite veins and claystone laminations along bedding planes.

20.0 to 20.8 ft: CLAYSTONE Dark gray in color; very soft (H7) and very intensely weathered (W7); thinly bedded and easily separates along bedding planes; slakes rapidly; strong reaction with HCl.

20.8 to 22.8 ft: INTERBEDDED SANDSTONE/ SILTSTONE/

CLAYSTONE

Sandstone and siltstone are brown to gray in color, fine to very fine grained, and argillaceous; moderately hard (H4) and moderately to slightly weathered (W4); thinly bedded; strong reaction with HCl. Claystone is dark gray in color, very soft (H7) and very intensely weathered (W7); thinly bedded and easily separates along bedding planes; slakes rapidly; strong reaction with HCl.

22.8 to 25.8 ft: SANDSTONE Brown to gray in color, fine grained, and argillaceous;

moderately hard (H4) and moderately to slightly weathered (W4), moderately bedded and easily separates along bedding planes; calcite veins and claystone laminations along bedding planes.

25.8 to 26.3 ft: CLAYSTONE Dark gray in color; very soft (H7) and very intensely weathered (W7); thinly bedded and easily separates along bedding planes; slakes rapidly; strong reaction with HCl.

26.3 to 39.2 ft: SANDSTONE Brown to gray in color, fine grained, and argillaceous;

moderately hard (H4) and moderately to slightly weathered (W4); moderately bedded and easily separates along bedding planes.

39.2 to 41.8 ft: SILTSTONE Brown to gray in color, very fine grained, and argillaceous;

moderately hard (H4) and moderately to slightly weathered (W4); moderately bedded and easily separates along bedding

Qal

Kpc

SPTs

(SP-SM)g

SP-SM

CLSTN

SS/

CLSTN/

SLTSTN

CLSTN

SLTSTN

SLTSTN/

CLSTN

SS/

SLTSTN/

CLSTN

5117.1

5113.3

5102.6 5101.6 5100.8

5098.8

5095.8 5095.3

5082.4

5079.8

5076.6

5071.6

5070.0

5061.6

Bentonite seal with NO pipe

Clayey Sand Poorly Graded Sand with Silt and Gravel

Poorly Graded Sand with Silt Sandstone

Claystone Interbedded Claystone and Sandstone

SHEET 1 OF 2 DRILL HOLE DHR2-24-36

N G

W S

P R

O C

K S

H U

M W

A Y

W A

S H

H D

D D

L L

O G

S .G

P J

T S

T D

U S

L A

B .G

GROUND ELEVATION: 5121.6 ft NAVD88

HOLE LOGGED BY: C. Beyer

REVIEWED BY: K.Graham

DEPTH TO BEDROCK: 19.0 ft

WATER DEPTH MEASURED ON: 9/14/2024 TOP OF CASING ELEVATION: NA

ANGLE FROM HORIZONTAL: -90oBEGUN: 9/14/2024 FINISHED: 9/16/2024

NOTES

H O

O M

TOTAL DEPTH: 60.0 ft

FEATURE: Reach 2

G E

U N

D E

P T

S S

A T

O N

T A

C T

D E

P T

H S

COORDINATES: N 2098794.4 E 2542848.5 NAD83

CLASSIFICATION AND

PHYSICAL CONDITION

GEOLOGIC LOG OF DRILL HOLE NO. DHR2-24-36 SHEET 1 OF 2

SPT= standard penetration test; CA= California sample; FADC= flight auger dry core; HQ3= coring system; SS= sandstone; SLTST= siltstone; SH= shale; CLSTN= claystone; = water level.

*All angles measured from horizontal axis at zero degrees unless otherwise denoted*

H ar dn es s

F ra ct ur e D en si ty

W ea th er in g

LOCATION: Pipeline Alignment HDD

E C

O V

E R

PROJECT: Navajo Gallup Water Supply Project STATE: New Mexico

H O

Q D

B lo w s pe r

F oo t (S am pl e In te rv al

ENGINEERING PROPERTIES

COMMENTS:

DEPTH TO WATER & ELEVATION: 8.3 ft (5113.3)

5113.3

G17 planes.

41.8 to 45.0 ft: SANDSTONE Brown to gray in color, fine grained, and argillaceous;

moderately hard (H4) and moderately to slightly weathered (W4); moderately bedded and easily separates along bedding planes; calcite veins and claystone laminations along bedding planes.

45.0 to 50.0 ft: INTERBEDDED SANDSTONE/ SILTSTONE/

CLAYSTONE

50.0 to 55.0 ft: SANDSTONE Brown to gray in color, fine grained, and argillaceous;

moderately hard (H4) and moderately to slightly weathered (W4); moderately bedded and easily separates along bedding planes; calcite veins and claystone laminations along bedding planes.

50.0 to 60.0 ft: INTERBEDDED SANDSTONE/ SILTSTONE/

CLAYSTONE

Brown to gray in color, fine grained, and argillaceous;

moderately hard (H4) and moderately to slightly weathered (W4); moderately bedded and easily separates along bedding planes; calcite veins and claystone laminations along bedding planes.

STRATIGRAPHY:

0.0 to 19.0 ft: QUATERNARY ALLUVIUM (Qal)

19.0 to 60.0 ft: CRETACEOUS PICTURED CLIFFS (Kpc)

Bentonite seal with NO pipe

Clayey Sand Poorly Graded Sand with Silt and Gravel

Poorly Graded Sand with Silt Sandstone

Claystone Interbedded Claystone and Sandstone

SHEET 2 OF 2 DRILL HOLE DHR2-24-36

N G

W S

P R

O C

K S

H U

M W

A Y

W A

S H

H D

D D

L L

O G

S .G

P J

T S

T D

U S

L A

B .G

GROUND ELEVATION: 5121.6 ft NAVD88

HOLE LOGGED BY: C. Beyer

REVIEWED BY: K.Graham

DEPTH TO BEDROCK: 19.0 ft

WATER DEPTH MEASURED ON: 9/14/2024 TOP OF CASING ELEVATION: NA

ANGLE FROM HORIZONTAL: -90oBEGUN: 9/14/2024 FINISHED: 9/16/2024

NOTES

H O

O M

TOTAL DEPTH: 60.0 ft

FEATURE: Reach 2

G E

U N

D E

P T

S S

A T

O N

T A

C T

D E

P T

H S

COORDINATES: N 2098794.4 E 2542848.5 NAD83

CLASSIFICATION AND

PHYSICAL CONDITION

GEOLOGIC LOG OF DRILL HOLE NO. DHR2-24-36 SHEET 2 OF 2

SPT= standard penetration test; CA= California sample; FADC= flight auger dry core; HQ3= coring system; SS= sandstone; SLTST= siltstone; SH= shale; CLSTN= claystone; = water level.

*All angles measured from horizontal axis at zero degrees unless otherwise denoted*

H ar dn es s

F ra ct ur e D en si ty

W ea th er in g

LOCATION: Pipeline Alignment HDD

E C

O V

E R

PROJECT: Navajo Gallup Water Supply Project STATE: New Mexico

H O

Q D

B lo w s pe r

F oo t (S am pl e In te rv al

ENGINEERING PROPERTIES

COMMENTS:

DEPTH TO WATER & ELEVATION: 8.3 ft (5113.3)

G18

All measurements are from ground level and reported in feet unless otherwise noted.

DRILLED BY:

Upper Colorado Drill Crew DRILLER: CJ. Webber HELPER: Dereck Nate

PURPOSE:

Preconstruction soil and bedrock pipeline alignment/HDD investigation.

DRILL EQUIPMENT:

CME Model 85 truck mounted rotary drill rig.

DRILL METHOD:

0.0 to 4.0 ft: 4.25-inch HSA with pilot bit.

4.0 to 28.3 ft: 4.25-inch HSA with dry core system.

28.3 to 79.1 ft: HQ3 diamond core drilling system with 5-foot-long split tube sample barrel.

DRILLING MEDIUM:

0.0 to 28.7 ft: None

28.7 to 79.1 ft: Water

CASING RECORD/ DRILLING NOTES:

0.0 to 4.0 ft: HSA with pilot bit

4.0 to 9.0 ft: FADC

9.0 to 14.0 ft: FADC

14.0 to 24.0 ft: FADC

24.0 to 28.7 ft: FADC

28.3 to 29.1 ft: HQ3

29.1 to 34.1 ft: HQ3

34.1 to 39.1 ft: HQ3

39.1 to 44.1 ft: HQ3

44.1 to 49.1 ft: HQ3

49.1 to 54.1 ft: HQ3

54.1 to 59.1 ft: HQ3

59.1 to 64.1 ft: HQ3

64.1 to 69.1 ft: HQ3

69.1 to 74.1 ft: HQ3

74.1 to 79.1 ft: HQ3 Casing removed

HOLE COMPLETION:

0.0 to 79.1 ft: Bentonite

SAMPLING:

A 28.3 to 29.1 ft: HQ3 wrapped core B 35.3 to 36.3 ft: HQ3 wrapped core C 41.0 to 41.5 ft: HQ3 wrapped core D 44.1 to 44.7 ft: HQ3 wrapped core E 53.1 to 53.8 ft: HQ3 wrapped core F 59.3 to 59.9 ft: HQ3 wrapped core.

G 64.6 to 65.7 ft: HQ3 wrapped core.

0.0 to 24.0 ft: QUATERNARY ALLUVIUM (Qal)

brown and dry, moist below 4.0 ft; intermittent organics and wood chips, likely disturbed during mastication work; strong reaction with HCl.

4.5 to 24.0 ft: POORLY GRADED SAND (SP) About 90% predominately fine sand; trace medium to coarse sand and gravel; about 10% nonplastic fines with rapid dilatancy, and no dry strength; maximum size, 30mm; wet, strong reaction with HCl.

24.0 to 79.1 ft: CRETACEOUS PICTURED CLIFFS (Kpc)

24.0 to 25.0 ft: CLAYSTONE Brownish gray in color, very soft (H7) and very intensely weathered (W7); thinly bedded and easily separates along bedding planes; slakes rapidly; wet, core pulverized by auger;

no reaction with HCl.

25.0 to 32.9 ft: SANDSTONE Gray in color, fine grained and argillaceous; moderately soft (H5) to hard (H3) and moderately to intensely weathered (W6), laminated to moderately bedded; no reaction with HCl.

32.9 to 33.2 ft: CLAYSTONE Dark gray to black in color; very soft (H7) and very intensely weathered (W7); thinly bedded and easily separates along bedding planes; slakes rapidly, wet; no reaction with HCl.

33.2 to 39.3 ft: SANDSTONE Gray in color, fine grained and argillaceous; hard (H3) and moderately weathered (W5); laminated to moderately bedded;

no reaction with HCl.

39.3 to 58.4 ft: INTERBEDDED SANDSTONE/ SILTSTONE/

CLAYSTONE

Sandstone and siltstone ar brown to gray in color, fine to very fined grained, and argillaceous; moderately hard (H4) to hard (H3) and slightly to moderately weathered (W4); thinly bedded;

strong reaction with HCl. Claystone is dark gray in color; soft (H6) and intensely to moderately weathered (W6); thinly bedded and easily separates along bedding planes; strong reaction with HCl.

58.4 to 79.1 ft: SILTSTONE Dark gray to gray in color, very fined grained, and argillaceous;

moderately hard (H4) to hard (H3) and slightly to moderately weathered (W4); mottled; thinly bedded with claystone laminations/interbeds less than 0.1 ft thick; strong reaction with HCl. Claystone is dark gray in color; soft (H6) and intensely to moderately weathered (W6); core easily separates along bedding planes.

STRATIGRAPHY:

0.0 to 24.0 ft: QUATERNARY ALLUVIUM (Qal)

24.0 to 79.1 ft: CRETACEOUS PICTURED CLIFFS (Kpc)

Qal

Kpc

3-6

SPTs

SP-SM

CLSTN

SS/

SLTSTN/

CLSTN

SLTSTN/

CLSTN

5114.6

5100.1 5099.1

5091.2 5090.9

5084.8

5065.7

5045.0

Bentonite seal with NO pipe

Clayey Sand Poorly Graded Sand with Silt

Claystone Sandstone

Interbedded Claystone and Sandstone Siltstone

SHEET 1 OF 1 DRILL HOLE DHR2-24-37

N G

W S

P R

O C

K S

H U

M W

A Y

W A

S H

H D

D D

L L

O G

S .G

P J

T S

T D

U S

L A

B .G

GROUND ELEVATION: 5124.1 ft NAVD88

HOLE LOGGED BY: C. Beyer

REVIEWED BY: K.Graham

DEPTH TO BEDROCK: 24.0 ft

WATER DEPTH MEASURED ON: 9/3/2024 TOP OF CASING ELEVATION: NA

ANGLE FROM HORIZONTAL: -90oBEGUN: 9/3/2024 FINISHED: 9/4/2024

NOTES

H O

O M

TOTAL DEPTH: 79.1 ft

FEATURE: Reach 2

G E

U N

D E

P T

S S

A T

O N

T A

C T

D E

P T

H S

COORDINATES: N 2098285. E 2542805.9 NAD83

CLASSIFICATION AND

PHYSICAL CONDITION

GEOLOGIC LOG OF DRILL HOLE NO. DHR2-24-37 SHEET 1 OF 1

SPT= standard penetration test; CA= California sample; FADC= flight auger dry core; HQ3= coring system; SS= sandstone; SLTST= siltstone; SH= shale; CLSTN= claystone; = water level.

*All angles measured from horizontal axis at zero degrees unless otherwise denoted*

H ar dn es s

F ra ct ur e D en si ty

W ea th er in g

LOCATION: Pipeline Alignment HDD

E C

O V

E R

PROJECT: Navajo Gallup Water Supply Project STATE: New Mexico

H O

Q D

B lo w s pe r

F oo t (S am pl e In te rv al

ENGINEERING PROPERTIES

COMMENTS:

DEPTH TO WATER & ELEVATION: 7.9 ft (5116.2)

5116.2

G19

ALL MEASUREMENTS ARE TAKEN

FROM GROUND LEVEL AND

REPORTED IN ENGINEERING FEET

UNLESS OTHERWISE NOTED

DRILLED BY: UCB Provo Drill Crew DRILLER: CJ Weber HELPER(S): Dereck Nate

PURPOSE:

Preconstruction soil and bedrock pipeline alignment/HDD investigation.

DRILL EQUIPMENT:

CME Model 85 truck mounted rotary drilling rig.

DRILL METHOD:

0.0 to 4.0 ft: 4.25-inch HSA with pilot bit.

4.0 to 29.0 ft: 4.25-inch HSA with dry core system; intermittent pilot bit through terrace gravels; SPT sampling.

29.0 to 95.5 ft: HQ3 diamond core drilling system with 5-foot-long split tube sample barrel; Syntec 2.25-inch impregnated diamond drill bit.

DRILLING MEDIUM:

0.0 to 29.0 ft: None

29.0 to 95.5 ft: Water

CASING RECORD/DRILLING NOTES:

0.0 to 4.0 ft: Pilot bit

4.0 to 29.0 ft: FADC / pilot bit

29.0 to 30.5 ft: Advanced HQ3 1.5 ft

30.5 to 95.5 ft: Advanced HQ3 in 5-foot sample intervals.

*Driller sounded borehole at 95.5 ft total depth.

HOLE COMPLETION:

Casing removed; backfill hole with bentonite from 49.5 ft (total depth) to surface.

SAMPLING:

4.0 to 5.5 ft: SPT 1

6.5 to 8.0 ft: SPT 2

9.0 to 10.5 ft: SPT 3

11.5 to 13.0 ft: SPT 4

14.0 to 15.5 ft: SPT 5

19.0 to 20.5 ft: SPT 6

24.0 to 25.5 ft: SPT 7

32.5 to 33.2 ft: HQ3 A

35.8 to 36.8 ft: HQ3 B

40.5 to 41.0 ft: HQ3 C

48.9 to 49.6 ft: HQ3 D

60.5 to 61.0 ft: HQ3 E

70.5 to 71.2 ft: HQ3 F

83.5 to 84.0 ft: HQ3 G

Core sample conditions are immediately preserved for shipping and testing by the Denver Geotechnical Laboratory and Field Support (GLFS) group.

0.0 to 28.2 ft: QUATERNARY ALLUVIUM (Qal)

0.0 to 6.5 ft: SILTY SAND About 70% medium to fine, hard, subangular to subrounded sand; about 30% nonplastic fines; trace fine to medium, hard, subrounded to rounded gravel; maximum size 30mm; FeOx staining present; brown, dry, strong reaction with HCl.

LAB TEST DATA: Test interval 4.0 to 5.5 ft;

21.5% fines, 78.5% sand, 0.0% gravel LL= NA, PI= NP, SL= NA, SpG= 2.66, Moisture= 12.8%; lab classification is

SILTY SAND (SM)

6.5 to 11.5 ft: CLAYEY SAND About 55% fine sand; about 45% fines with medium plasticity, medium dry strength, and medium toughness; trace fine to medium, hard, subrounded to rounded gravel; maximum size 30mm; tan in color, homogeneous, dry; strong reaction with HCl.

LAB TEST DATA: Test interval 6.5 to 8.0 ft;

13.8% fines, 86.2% sand, 0.0% gravel LL= NA, PI= NP, SL= NA, SpG= NA, Moisture= NA; lab classification is

SILTY SAND (SM)

LAB TEST DATA: Test interval 9.0 to 10.5 ft;

45.5% fines, 54.5% sand, 0.0% gravel LL= NA, PI= NP, SL= NA, SpG= 2.60%, Moisture= 4.3%; lab classification is

SILTY SAND (SM)

11.5 to 16.1 ft: SANDY LEAN CLAY with GRAVEL About 60% fines with medium plasticity, medium dry strength, medium toughness, and slow dilatancy; about 40% fine sand;

about 10% fine to coarse, hard, subrounded to rounded gravel; maximum size 50mm; brown, homogenous, and moist;

strong reaction with HCl.

LAB TEST DATA: Test interval 11.5 to 13.0 ft;

47% fines, 53.0% sand, 0.0% gravel LL= NA, PI= NP, SL= NA, SpG= 2.68, Moisture= 4.2%; lab classification is

SILTY SAND (SM)

LAB TEST DATA: Test interval 14.0 to 15.5 ft;

45.5% fines, 47.2% sand, 7.3% gravel LL= NA, PI= NP, SL= NA, SpG= 2.62, Moisture= 8.0%; lab classification is

SILTY SAND (SM)

16.1 to 24.5 ft: POORLY GRADED SAND with SILT and

GRAVEL

About 75% fine to coarse, hard, subangular to subrounded sand; about 15% fine to medium, hard, subrounded gravel;

maximum size 30 mm; about 10% nonplastic fines; brown in color; weak reaction with HCl.

LAB TEST DATA: Test interval 19.0 to 20.5 ft;

15.6% fines, 57.4% sand, 27.0% gravel LL= NA, PI= NP, SL= NA, SpG= 2.69, Moisture= 6.7%; lab classification is SILTY SAND (SM)g

25.9 to 28.2 ft: LEAN CLAY with SAND and GRAVEL About 80% fines with high dry strength, medium toughness, and no dilatancy; about 10% fine to medium grained, hard, subangular to subrounded sand; about 10% fine to coarse, hard, subrounded to rounded gravel; maximum size 50 mm;

Qal

Kpc

H3 H6

H3 - H4

FD6

FD5

FD7

FD1

REF

(SM)g

(SC)g s(CL)g

(SP)g

(CL)sg

CLSTN

SS/

CLSTN

5155.5

5150.5

5145.9

5138.0

5136.1

5133.8

5124.1

5121.5

Bentonite seal with NO pipe

Silty Sand with Gravel Clayey Sand with Gravel

Sandy Clay with Gravel Poorly Graded Sand with Gravel

No recovery Lean Clay with Sand and Gravel

SHEET 1 OF 2 DRILL HOLE DHR2-24-38

N G

W S

P R

O C

K S

H U

M W

A Y

W A

S H

H D

D D

L L

O G

S .G

P J

T S

T D

U S

L A

B .G

GROUND ELEVATION: 5162.0 ft NAVD88

HOLE LOGGED BY: K.Graham

REVIEWED BY: C. Beyer

DEPTH TO BEDROCK: 28.2 ft

WATER DEPTH MEASURED ON: 8/30/2024 TOP OF CASING ELEVATION: NA

ANGLE FROM HORIZONTAL: -90oBEGUN: 8/30/2024 FINISHED: 9/1/2024

NOTES

H O

O M

TOTAL DEPTH: 95.5 ft

FEATURE: Reach 2

G E

U N

D E

P T

S S

A T

O N

T A

C T

D E

P T

H S

COORDINATES: N 2097833.8 E 2542787.5 NAD83

CLASSIFICATION AND

PHYSICAL CONDITION

GEOLOGIC LOG OF DRILL HOLE NO. DHR2-24-38 SHEET 1 OF 2

SPT= standard penetration test; CA= California sample; FADC= flight auger dry core; HQ3= coring system; SS= sandstone; SLTST= siltstone; SH= shale; CLSTN= claystone; = water level.

*All angles measured from horizontal axis at zero degrees unless otherwise denoted*

H ar dn es s

F ra ct ur e D en si ty

W ea th er in g

LOCATION: Pipeline Alignment HDD

E C

O V

E R

PROJECT: Navajo Gallup Water Supply Project STATE: New Mexico

H O

Q D

B lo w s pe r

F oo t (S am pl e In te rv al

ENGINEERING PROPERTIES

COMMENTS:

DEPTH TO WATER & ELEVATION: 27.7 ft (5134.3)

5134.3

G20 tan to brown in color, homogeneous, dry; strong reaction with HCl.

0.0 to 28.2 ft: CRETACEOUS PICTURED CLIFFS (Kpc)

28.2 to 37.9 ft: SANDSTONE Brown to gray in color and fine grained; moderately hard (H4) and moderately weathered (W5); thinly bedded; intensely to moderately fractured (FD6) with mechanical breaks, bedding plane separations, and joints dipping from 30° to 0°; FeOx present; strong reaction with HCl.

37.9 to 40.5 ft: CLAYSTONE Dark gray to black in color, very soft (H7) and intensely weathered (W7); thinly bedded to laminated and fissile; easily separate along bedding planes; intensely fractured (FD7) to very intensely fractured (FD9) with mechanical breaks bedding plane separations; no reaction with HCl.

40.5 to 95.5 ft: INTERBEDDED SANDSTONE/ CLAYSTONE Sandstone is gray in color, fine grained, and argillaceous;

moderately hard (H4) to hard (H3) and moderately weathered (W5); thinly to thickly bedded and easily separates along claystone interbeds; bedding dips and fractures range from 15° to 0°; no FeOx present; weak reaction with HCl; claystone appears as intermittent to concentrated interbeds throughout sample interval; dark gray to black in color, very soft (H7) and intensely weathered (W7); laminated to thinly bedded and easily separates along bedding planes; bedding dips and fractures range from 15° to 0°; no reaction with HCl.

STRATIGRAPHY:

0.0 to 28.2 ft: QUATERNARY ALLUVIUM (Qal)

28.2 to 95.5 ft: CRETACEOUS PICTURED CLIFFS (Kpc)

Kpc

H3 - H4

H3 - H6

W5- W7

FD1

FD5

FD0

FD5

FD7

FD5-

SS/

CLSTN

5066.5

Bentonite seal with NO pipe

Silty Sand with Gravel Clayey Sand with Gravel

Sandy Clay with Gravel Poorly Graded Sand with Gravel

No recovery Lean Clay with Sand and Gravel

SHEET 2 OF 2 DRILL HOLE DHR2-24-38

N G

W S

P R

O C

K S

H U

M W

A Y

W A

S H

H D

D D

L L

O G

S .G

P J

T S

T D

U S

L A

B .G

GROUND ELEVATION: 5162.0 ft NAVD88

HOLE LOGGED BY: K.Graham

REVIEWED BY: C. Beyer

DEPTH TO BEDROCK: 28.2 ft

WATER DEPTH MEASURED ON: 8/30/2024 TOP OF CASING ELEVATION: NA

ANGLE FROM HORIZONTAL: -90oBEGUN: 8/30/2024 FINISHED: 9/1/2024

NOTES

H O

O M

TOTAL DEPTH: 95.5 ft

FEATURE: Reach 2

G E

U N

D E

P T

S S

A T

O N

T A

C T

D E

P T

H S

COORDINATES: N 2097833.8 E 2542787.5 NAD83

CLASSIFICATION AND

PHYSICAL CONDITION

GEOLOGIC LOG OF DRILL HOLE NO. DHR2-24-38 SHEET 2 OF 2

SPT= standard penetration test; CA= California sample; FADC= flight auger dry core; HQ3= coring system; SS= sandstone; SLTST= siltstone; SH= shale; CLSTN= claystone; = water level.

*All angles measured from horizontal axis at zero degrees unless otherwise denoted*

H ar dn es s

F ra ct ur e D en si ty

W ea th er in g

LOCATION: Pipeline Alignment HDD

E C

O V

E R

PROJECT: Navajo Gallup Water Supply Project STATE: New Mexico

H O

Q D

B lo w s pe r

F oo t (S am pl e In te rv al

ENGINEERING PROPERTIES

COMMENTS:

DEPTH TO WATER & ELEVATION: 27.7 ft (5134.3)

G21

All measurements are from ground level and reported in feet unless otherwise noted.

DRILLED BY:

Upper Colorado Drill Crew DRILLER: B. Samuels HELPER: CJ. Weber, D. Nate

PURPOSE:

Preconstruction soil and bedrock pipeline alignment investigation.

DRILL EQUIPMENT:

CME Model 850X track mounted rotary drill rig.

DRILL METHOD:

0.0 to 40.0: HQ3 diamond core drilling system with 5-foot-long split tube sample barrel..

DRILLING MEDIUM:

0.0 to 40.0: Water

CASING RECORD/ DRILLING NOTES:

0.0 to 2.0: HQ3

2.0 to 7.0: HQ3

7.0 to 12.0: HQ3

12.0 to 17.0: HQ3

17.0 to 22.0: HQ3

22.0 to 27.0: HQ3

27.0 to 32.0: HQ3

32.0 to 37.0: HQ3

37.0 to 42.0: HQ3

42.0 to 47.0: HQ3

47.0 to 50.0: HQ3 Casing removed.

HOLE COMPLETION:

0.0 to 40.0: Bentonite

SAMPLING:

14.9 to 15.5: A HQ3

18.5 to 19.5: B HQ3

24.2 to 25.1: C HQ3

31.0 to 32.0: D HQ3

38.5 to 39.4: E HQ3

Qal

Kpc

0.0 to 1.0 ft QUATERNARY ALLUVIUM (Qal)

0.0 to 1.0 ft LEAN CLAY (CL): About 75% fines with medium plasticity, medium toughness, medium dry strength and no dilatancy; about 25% fine sand; maximum size, fine sand; brown and dry; weak reaction with HCl.

1.0 to 40.0 ft CRETACEOUS PICTURED CLIFFS (Kpc)

1.0 to 12.1 ft SHALE: Dark brown color of interbedded sandstone and claystone; very soft (H7) and intensely weathered (W7); laminated and dips from 19° to horizontal;

slighty fractured (FD2) and friable; no reaction with HCl.

12.1 to 24.2 ft SANDSTONE: Brown to gray color and fine grained; moderately soft (H5) and intensely weathered (W7);

laminated to thinly bedded and dips from 19° to horizontal;

slighty fractured…

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File details come from the government source that posted it. Updated Nov 17, 2025.