DRAFT_140R4025R0023_Attachment_3_-_00_00_02A_Geology_04102025_3.pdf

PDF 6 MB Posted Aug 22, 2025

Attached to: NGWSP INTAKE & RIVER PUMPING PLANT
Solicitation number: 140R4025R0023
Issued by: Department of the Interior Bureau of Reclamation

About this file

Written by GovTribe AI · Aug 22, 2025

This document is a set of geologic investigation files for the Navajo-Gallup Water Supply Project, specifically focusing on the Reach 1 San Juan River Intake and Pumping Plant site in New Mexico. The investigation includes multiple drill hole logs, test pit logs, and physical properties test results for soil and rock samples collected from the project area. The drilling and testing were conducted to assess the geological conditions and material properties for potential foundation and construction purposes.

The investigation involved 24 drill holes (DHR1-23-1 through DHR1-23-24) and several test pits (TPR1-23-1 through TPR1-23-15), which were drilled and excavated to depths ranging from 20 to 54 feet. The geological strata primarily consisted of Quaternary Alluvium (Qal) from 0-18.3 to 29.5 feet, overlying the Cretaceous Fruitland Formation (Kf) bedrock. Soil classifications varied but predominantly included silty sand, clayey sand, and lean clay with gravel, with specific particle size fractions and consistency limits documented. The physical properties tests analyzed characteristics such as liquid limit, plasticity index, specific gravity, and in-place density to support geotechnical assessment for the water supply project's infrastructure development.

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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

GENERAL GEOLOGIC

LEGEND, EXPLANATION,

AND NOTES

FARMINGTON, NM

1695-529-60410

2024-03-20

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -

Beyer, Christopher

Thornburg, D

Graham, Kris

Beyer, Christopher R

Gladden, Ryan L P.E.

Deputy Construction Engineer

Drill hole location with identification number

Test Pit location and Identification number

Geologic Unit Contact

Dashed where approximate

Queried where inferred

Geologic standards and definitions used for rock quality and rock discontinuities are based on Bureau of Reclamation Engineering Geology Field Manual and drawing numbers 40-D-6493 and 40-D-6499.

Soil classification and descriptions are based on the Unified Soil Classification System (USCS) and Bureau of Reclamation procedures and guidelines as described in Geotechnical Branch Training Manuals numbers 4, 5, 6, and Designations USBR 5000 (laboratory classification) and USBR - 5005 (visual classification). These procedures are similar to ASTM D2487-11 and ASTM D2488-09A respectively.

Interpretations shown on geologic profiles are based on Test Pit, Drill Hole, outcrop, and field mapping data. Interpretations suggest general trends between data points and do not depict localized irregularities.

For the entire description of material, drilling or excavation method and conditions, exact locations of the hole, etc., see complete log.

Km Qal

FILL

Fill is composed of a combination of engineered/reworked river terrace and alluvial deposits, along with possible borrow material emplaced during construction. Fill is encountered under and around existing water conveyance structures and roads throughout the project. It is often composed of Clayey Sand (SC), Silty Sand (SM) Clayey Sand with Gravel (SC)g Silty Sand with Gravel (SM)g, etc, and may contain oversize particles including cobbles and boulders. See logs for more site-specific material descriptions.

Quaternary Alluvium

Quaternary alluvium consists of unconsolidated surficial deposits regardless of origin. It is derived from a variety of sources including slope wash, eolian and colluvial deposition as well as weathering and decomposition of in-place bedrock. Alluvium contains variable amounts of plastic to nonplastic fines and may contain sand, gravel, cobbles, and boulders on terraces and in river channels and flood plains. Numerous soil types are encountered, including Poorly Graded Sand (SP) Poorly graded sand with gravel (SP)g Silty Sand (SM), Silty Sand with Gravel (SM)g Clayey Sand (SC), Clayey Sand With Gravel (SC)g, Lean Clay with Sand (CL)s, Lean Clay (CL) Fat Clay (CH), etc. Oversize material such as cobbles and boulders are also encountered. See logs for more site-specific material descriptions.

Cretaceous Pictured Cliffs Sandstone

Pictured Cliffs Sandstone is composed of light brown to orange to gray, very fine- to medium-grained sandstone interbedded with minor gray siltstone and shale. The upper part consists of ledge-forming, moderately- to massively-bedded sandstone. The sandstone is calcareous, ferruginous, and exhibits cellular- to cavernous-weathering. The lower part consists of laminated to thinly bedded sandstone, shale and claystone. The sandstone is moderately soft (H5) and intensely weathered (W7) to hard (H3) and slightly weathered(W2). The shale and claystone are generally very soft (H7) and intensely weathered (W7) to moderately soft (H5) and moderately weathered (W5).

Cretaceous Fruitland Fromation

The Fruitland formation is composed of gray to brown to olive sandstone, dark gray to black carbonaceous shale and coal. Sandstone was the only Fruitland rock type encountered in the Reach 1 investigations. The sandstone is homogeneous, argillaceous, fine- to medium-grained, thickly to massively bedded, moderately hard (H4) to hard (H3) and slightly to moderately weathered (W4).

DHR1-22-1

TPR1-22-1

Drill Hole or Test Pit on profile (dashed where projected)

Km Qal

BEDROCK ABBREVIATIONS:

CLSTN - CLAYSTONE

SS- SANDSTONE

GEOLOGIC EXPLANATION GENERAL GEOLOGIC NOTESGENERAL GEOLOGIC LEGEND

STRATIGRAPHY

FILL

Qal

Kpc

D H

R 1-

-9

El ev

7.0

20.5

TD 29.2'

(CL)sg

(SP)g

Pumping Plant (1)

NAPI Turnout

SAN JUAN

GENERATING STATION

RESERVOIR

SAN JUAN GENERATING STATION MODIFICATIONS

SAN JUAN RIVER INTAKE AND PUMPING PLANT

REACH 2

REACH 3

MORGAN LAKE

SAN JUAN RIVER

LOCATION MAP AREA

NAVAJO SERVICE ROUTE 36

ROAD 6100

S a n J u a n R i v e r

Kirtland

Fruitland

Farmington

REACH 2

COLORADO

MEXICO

A R

O N

O K

H O

M A

TEX

A S

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

NEW MEXICO

San Juan

McKinley

SAN JUANGENERATING STATIONRESERVOIR

MORGAN LAKE

SAN JUAN RIVER

SAN JUAN RIVER S a n J u a n R i v e r

S a n J u a n R i v e r

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

¦D_DT¦

¦STATUS¦

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

I N

K E

A N

D P

U M

G P

LOCATION MAP

FARMINGTON, NM

1695-529-60400

2024-03-20

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL

£TT£

£AT£

£AA£

£TA£

D. THORNBURG

Graham, Kris

Beyer, Christopher R

Gladden, Ryan L P.E.

Deputy Construction Engineer

KEY MAP LOCATION MAP

VICINITY MAP

0 3000' 6000'

0 100' 200'

General Map see drawing 1695-529-60397.

For General Geologic Legend, Explanation, and Notes see drawing 1695-529-60410.

For Reach 1 San Juan San Juan River Intake and Pumping Plant - Location of Exploration see drawing 1695-529-60399.

For Reach 1 San Juan San Juan River Intake and Pumping Plant Surface Geology and Location of Sections see drawing 1695-529-60420

For Reach 1 San Juan San Juan River Intake and Pumping Plant Geologic Sections A-A', B-B', C-C', D-D', E-E, and F-F' see drawing 1695-529-60423.

For San Juan Generating Station Modifications Location Map see drawing 1695-529-60401.

For San Juan Generating Station Modifications Location of Exploration see drawing 1695-529-60398.

For San Juan Generating Station Modifications - Surface Geology see drawing 1695-529-60429.

GENERAL NOTES

REFERENCE DRAWINGS

S H W

Reach 1 Pipeline (Exisiting 42" Pipeline)

Reach 1 Pipeline

Reach 1 Pipeline (Exisiting 42" Pipeline)

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

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

E E E E E

E E

E E E

S a n J u a n R i v e r

S H

W Y

DHR1-23-1

DHR1-23-10

DHR1-23-11

DHR1-23-15

DHR1-23-16

DHR1-23-17

DHR1-23-23

DHR1-23-24

OWR1-23-3

DHR1-23-4

OWR1-23-5

DHR1-23-6

OWR1-23-7

DHR1-23-8

DHR1-23-9

OWR1-23-PERC

TPR1-23-9

TPR1-23-5

TPR1-23-6

TPR1-23-1

TPR1-23-15

TPR1-23-14

TPR1-23-8

TPR1-23-3

TPR1-23-2

TPR1-23-7

TPR1-23-4

DHR1-23-2

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

¦D_DT¦

¦STATUS¦

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

I N

K E

A N

D P

U M

G P

LOCATION OF

EXPLORATION

FARMINGTON, NM

1695-529-60399

2024-03-20

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL

£TT£

£AT£

£AA£

£TA£

Beyer, Christopher

Thornburg, D

Graham, Kris

Beyer, Christopher R

Gladden, Ryan L P.E.

Deputy Construction Engineer

Feet 0 60 120

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

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

GENERAL NOTES

REFERENCE DRAWINGS

Description

DHR1-23-1

DHR1-23-2

DHR1-23-4

DHR1-23-6

DHR1-23-8

DHR1-23-9

DHR1-23-10

DHR1-23-11

DHR1-23-15

DHR1-23-16

DHR1-23-17

DHR1-23-23

DHR1-23-24

OWR1-23-3

OWR1-23-5

OWR1-23-7

OWR1-23-PERC

Northing

2093295.63

2093186.96

2092817.39

2093247.24

2093157.45

2093309.00

2093271.11

2093126.11

2093075.38

2093138.13

2093767.04

2093020.87

2093235.99

2092893.73

2093166.73

2093235.28

2093184.03

Easting

2552917.18

2553263.00

2553310.05

2553229.20

2553365.46

2553208.18

2553264.92

2553333.63

2553206.79

2553253.32

2553881.49

2553253.71

2553375.05

2553280.36

2553124.89

2553182.86

2553400.50

Longitude

W108° 24' 50"

W108° 24' 40"

W108° 24' 50"

Latitude

N36° 45' 00"

N36° 45' 10"

N36° 45' 00"

Elevation

5097.15

5096.28

5096.52

5096.62

5096.68

5097.23

5097.10

5096.29

5095.80

5096.78

5109.41

5095.63

5097.01

5096.00

5095.49

5097.38

5097.22

Description

TPR1-23-1

TPR1-23-2

TPR1-23-3

TPR1-23-4

TPR1-23-5

TPR1-23-6

TPR1-23-7

TPR1-23-8

TPR1-23-9

TPR1-23-14

TPR1-23-15

Northing

2093056.80

2092919.17

2092810.19

2093122.51

2093270.52

2093197.22

2093002.72

2093146.93

2093286.49

2093199.62

2093753.88

Easting

2553319.34

2553278.65

2553337.94

2553157.01

2553291.92

2553201.81

2553269.66

2553336.94

2553240.94

2553352.53

2553876.65

Longitude

W108° 24' 50"

W108° 24' 40"

Latitude

N36° 45' 00"

N36° 45' 10"

Elevation

5097.53

5096.96

5097.26

5095.99

5097.70

5097.33

5096.23

5096.83

5096.96

5097.44

5109.66

DRILL HOLE LOCATION TABLE

TEST PIT LOCATION TABLE

General Map see drawing 1695-529-60397.

For General Geologic Legend, Explanation, and Notes see drawing 1695-529-60410.

For Reach 1 San Juan San Juan River Intake and Pumping Plant Location Map see drawing 1695-529-60400.

For Reach 1 San Juan San Juan River Intake and Pumping Plant Surface Geology and Location of Sections see drawing 1695-529-60420

For Reach 1 San Juan San Juan River Intake and Pumping Plant Geologic Sections A-A', B-B', C-C', D-D', E-E, and F-F' see drawing 1695-529-60423.

For San Juan Generating Station Modifications Location Map see drawing 1695-529-60401.

For San Juan Generating Station Modifications Location of Exploration see drawing 1695-529-60398.

For San Juan Generating Station Modifications - Surface Geology see drawing 1695-529-60429.

Existing 42" Pipeline

S a n J u a n R i v e r

U S

H W

DHR1-23-1

DHR1-23-10

DHR1-23-11

DHR1-23-15

DHR1-23-16

DHR1-23-17

DHR1-23-23

DHR1-23-24

OWR1-23-3

DHR1-23-4

OWR1-23-5

DHR1-23-6

OWR1-23-7

DHR1-23-8

DHR1-23-9

OWR1-23-PERC

TPR1-23-9

TPR1-23-5

TPR1-23-6

TPR1-23-1

TPR1-23-15

TPR1-23-14

TPR1-23-8

TPR1-23-3

TPR1-23-2

TPR1-23-7

TPR1-23-4

Qal

Qal/FILL

Qal

S2 1°

N48 ° 5

"E S56° 44' 00"E

S45° 50' 00"E

S42° 30' 40"E

S31° 40' 10"E

DHR1-23-2

N. 2093500 E.

N. 2093500

N. 2093000

Qal/FILL

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

¦D_DT¦

¦STATUS¦

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

I N

K E

A N

D P

U M

G P

SURFACE GEOLOGY &

LOCATION OF GEOLOGIC

SECTIONS

FARMINGTON, NM

1695-529-60420

2024-03-20

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL

£TT£

£AT£

£AA£

£TA£

Chris Beyer

D. Thornburg

Kris Graham

Beyer, Christopher R

Gladden, Ryan L P.E.

Deputy Construction Engineer

Feet 0 60 120

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

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

GENERAL NOTES

General Map see drawing 1695-529-60397.

For General Geologic Legend, Explanation, and Notes see drawing 1695-529-60410.

For Reach 1 San Juan San Juan River Intake and Pumping Plant Location Map see drawing 1695-529-60400.

For Reach 1 San Juan San Juan River Intake and Pumping Plant - Location of Exploration see drawing 1695-529-60399.

For Reach 1 San Juan San Juan River Intake and Pumping Plant Geologic Sections A-A', B-B', C-C', D-D', E-E, and F-F' see drawing 1695-529-60423.

For San Juan Generating Station Modifications Location Map see drawing 1695-529-60401.

For San Juan Generating Station Modifications Location of Exploration see drawing 1695-529-60398.

For San Juan Generating Station Modifications - Surface Geology see drawing 1695-529-60429.

REFERENCE DRAWINGS

Existing 42" Pipeline

O N

DISTANCE IN FEET

GEOLOGIC SECTION A-A'

0 100 200 250

O N

DISTANCE IN FEET

GEOLOGIC SECTION B-B'

0 100 200 300 350

O N

DISTANCE IN FEET

GEOLOGIC SECTION C-C'

0 100 150

O N

DISTANCE IN FEET

GEOLOGIC SECTION D-D'

0 100 200 300

O N

DISTANCE IN FEET

GEOLOGIC SECTION E-E'

0 100 200 300 400 500 550

O N

DISTANCE IN FEET

GEOLOGIC SECTION F-F'

0 100 200

S21° 33' 10"W N48° 57' 20"ES56° 44' 00"E

S45° 50' 00"E

S42° 30' 40"E

S31° 40' 10"E

A A' B B' C C' D D'

E E' F F'

D H

R 1-

-2

El ev

(P ro j.

L t.

7.5

10.0

TD 49.0'

(CL)s

(CL)g

(SP)gc

O W

R 1-

-P

El ev

(P ro j.

R t.

2.5

5.5

15.0

TD 22.0'

(SP)g

(CL)g

(SC)g

(SP)g

D H

R 1-

-8

El ev

(P ro j.

R t.

TD 49.0'

4.0

15.0

(CL)s

(CL)g

(SP)gc

D H

R 1-

-1

El ev

(P ro j.

L t.

4.5

8.5

43.5

TD 48.0'

SS/CLSTN

(SP)gc

(CL)g

D H

R 1-

-9

El ev

(P ro j.

L t.

7.0

TD 29.2'

(CL)sg

(SP)g

TD 30.2'

7.5

(SP)gc

D H

R 1-

-6

El ev

(P ro j.

L t.

D H

R 1-

-1

El ev

(P ro j.

L t.

.6 3'

TD 46.0'

0.5 2.0

7.5

13.0

(SC)g (SM)g

(SC)g

(SM)g

(SP)g

D H

R 1-

-2

El ev

(P ro j.

R t.

7.5

10.0

TD 49.0'

(CL)s

(CL)g

(SP)gc

D H

R 1-

-8

El ev

(P ro j.

L t.

TD 49.0'

4.0

15.0

(CL)s

(CL)g

(SP)gc

O W

R 1-

-P

El ev

(P ro j.

L t.

2.5

5.5

15.0

TD 22.0'

(SP)g

(CL)g

(SC)g

(SP)g

Original ground surface

TD 43.6'

37.837.2 36.4 35.2

O W

R 1-

-7

El ev

(P ro j.

R t.

(SM)g

SS/CLSTN

SSSS/CLSTN

D H

R 1-

-1

El ev

(P ro j.

R t.

.5 5'

TD 46.0'

0.5 2.0

7.5

13.0

(SC)g (SM)g

(SC)g

(SM)g

(SP)g

Original ground surface

TD 43.6'

37.837.2 36.4 35.2

O W

R 1-

-7

El ev

(P ro j.

R t.

(SM)g

SS/CLSTN

SSSS/CLSTN

TD 30.2'

7.5

(SP)gc

D H

R 1-

-6

El ev

(P ro j.

R t.

D H

R 1-

-1

El ev

(P ro j.

L t.

.9 3'

TD 28.7'

10.5

17.0 s(CL)

(CL)s

D H

R 1-

-1

El ev

(P ro j.

R t.

4.5

8.5

43.5

TD 48.0'

SS/CLSTN

(SP)gc

(CL)g

Original ground surface

8.0

TD 25.0'

(SC)g

D H

R 1-

-1

El ev

(P ro j.

L t.

TD 20.0'

8.2

O W

R 1-

-5

El ev

(SP)gc

D H

R 1-

-1

El ev

TD 20.0'

9.0

16.0

(SC)gc

(SC)g

D H

R 1-

-2

El ev

TD 20.0'

10.5 s(CL)

(CL)s

TD 20.0'

2.5

4.8

10.0

O W

R 1-

-3

El ev

(P ro j.

R t.

(SP)g

(SC)g

2.0 3.8 5.0

7.0

17.5

TD 25.0'

D H

R 1-

-4

El ev

(P ro j.

L t

(SP)gc

(SC)g

Original ground surface Original ground surface

18.5

20.5 SS 20.5 20.0

Qal Qal/FILL

Kf Kf

20.5 19.5 19.5 18.5

20.5 20.5

Qal

18.6 19.5

Qal/FILL

18.6 19.5

20.5 20.0

Qal/FILL

20.5

18.3 SS

18.3

(SC)gc

17.0

CONCRETE

17.5

20.5 (SC)gc

Qal/FILL

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

¦D_DT¦

¦STATUS¦

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

I N

K E

A N

D P

U M

G P

GEOLOGIC SECTIONS

A-A', B-B', C-C', D-D', E-E', AND F-F'

FARMINGTON, NM

1695-529-60423

2024-03-20

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL

£TT£

£AT£

£AA£

£TA£

Chris Beyer

D. Thornburg

Kris Graham

Beyer, Christopher R

Gladden, Ryan L P.E.

Deputy Construction Engineer

GENERAL NOTES

REFERENCE DRAWINGS

General Map see drawing 1695-529-60397.

For General Geologic Legend, Explanation, and Notes see drawing 1695-529-60410.

For Reach 1 San Juan San Juan River Intake and Pumping Plant Location Map see drawing 1695-529-60400.

For Reach 1 San Juan San Juan River Intake and Pumping Plant - Location of Exploration see drawing 1695-529-60399.

For Reach 1 San Juan San Juan River Intake and Pumping Plant Surface Geology and Location of Sections see drawing 1695-529-60420.

For San Juan Generating Station Modifications Location Map see drawing 1695-529-60401.

For San Juan Generating Station Modifications Location of Exploration see drawing 1695-529-60398.

For San Juan Generating Station Modifications - Surface Geology see drawing 1695-529-60429.

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

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

HORIZONTAL SCALE 1"=50'

VERTICAL SCALE 1"=10'

BOTTOM OF HOLEBOTTOM OF HOLE

0.0 to 20.5 ft QUATERNARY ALLUVIUM (Qal)

0.0 to 8.0 ft SILTY SAND:

About 80% predominately fine sand, about 20% fines with no plasticity, and no dry strength; trace gravel; maximum size. 50mm; grayish brown in color, moist.

8.0 to 20.5 ft CLAYEY SAND WITH GRAVEL:

About 60% predominately fine sand, trace medium to coarse sand; about 20% fines with low plasticity, low dry strength and low toughness; about 20% fine to coarse gravel; trace cobbles, maximum size, 150mm.

20.5 to 25.0.0 ft CRETACEOUS FRUITLAND FORMATION (Kf)

20.5 to 25.0 ft SANDSTONE:

Gray, fine grained, argillaceous, thickly to massively bedded, moderately hard (H4), slightly to moderately weathered (4), no reaction with HCl.

STRATIGRAPHY:

0.0 to 20.5 ft QUATERNARY ALLUVIUM (Qal)

20.5 to 25.0 ft CRETACEOUS FRUITLAND FORMATION (Kf)

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

DRILLED BY:

Upper Colorado Drill Crew DRILLER: Braden Samuels HELPER: Derek Nate, Mike Meadows

PURPOSE:

Foundation investigations at PNM River Pumping Plant site.

DRILL EQUIPMENT:

Eijkelkamp XL 240.

DRILL METHOD:

0.0 to 25.0 Sonic Drilling with 8" casing.

DRILLING MEDIUM:

0.0 to 25.0 none.

CASING RECORD/ DRILLING

NOTES:

0.0 to 25.0 ft 8" steel casing.

HOLE COMPLETION:

0.0 to 25.0 ft bentonite pellets.

SAMPLING:

SPT#1 5.0 to 6.5 ft SPT#2 10.0 to 11.5 ft (sample spilled, not enough material for gradation) SPT #3 15.0 to 16.5 ft

(SC)g

Qal/Fill

5076.7

5072.2

5076.7

5072.2

8/7/7

2/3/5 sank

(SC)g

4 4

DRILL HOLE DHR1-23-1SHEET 1 OF 1

Silty Sand Clayey Sand with Gravel

Bentonite seal with NO pipe

DRILL HOLE DHR1-23-1SHEET 1 OF 1

D E

P T

F ra ct ur e D en si ty

R Q

D R

Q D

F ra ct ur e D en si ty

STATE: New Mexico

SHEET 1 OF 1

BEGUN: 3/21/2023 FINISHED: 3/21/2023

REVIEWED BY: K. Graham

TOTAL DEPTH: 25.0 ft

ENGINEERING PROPERTIES

HSA= hollow stem auger FADC= flight auger dry core HQ3= coring system SPT= standard penetration test CA= California sample NA= not available ft= feet NE= not encountered N/P= nonplastic NR= no recovery HCl= hydrochloric acid FeOx= iron oxide CaCOx= calcium carbonate MnOx= manganese oxide SpG= specific gravity SL= shrinkage limit O.D.= outside diameter = water level

All angles measured from horizontal axis at zero degrees unless otherwise noted.

The data for the center column and "classification and physical condition" column are based on Bureau of Reclamation Engineering Geology Field Manual and drawings titled Geology for Designs and Specifications as follows "Drawing No. 40-D-6493 Standard Descriptors and Descriptive Criteria for Rock. Drawing No.

40-D-6499 Standard Descriptors and Descriptive Criteria for Discontinuities."

HOLE LOGGED BY: C. Beyer

GRAPHIC LEGEND:

LOCATION: Reach 1 Intake

DEPTH TO WATER & ELEVATION: 10.0 ft (5087.2)

ANGLE FROM HORIZONTAL: -90o

TOP OF CASING ELEVATION: NA

TOTAL DEPTH: 25.0 ft

HOLE LOGGED BY: C. BeyerDEPTH TO BEDROCK: 20.5 ft.

NOTES

DEPTH TO BEDROCK: 20.5 ft.

REVIEWED BY: K. Graham

NOTES

GEOLOGIC LOG OF DRILL HOLE NO. DHR1-23-1

COMMENTS:

STATE: New Mexico

SHEET 1 OF 1

WATER DEPTH MEASURED ON: 3/21/2023

PROJECT: Navajo Gallup Water Supply ProjectFEATURE: Reach 1 PNM Option

GROUND ELEVATION: 5097.2 ft

ANGLE FROM HORIZONTAL: -90o

DEPTH TO WATER & ELEVATION: 10.0 ft (5087.2)

BEGUN: 3/21/2023 FINISHED: 3/21/2023

GRAPHIC LEGEND:

GROUND ELEVATION: 5097.2 ftLOCATION: Reach 1 Intake

GEOLOGIC LOG OF DRILL HOLE NO. DHR1-23-1

WATER DEPTH MEASURED ON: 3/21/2023

PROJECT: Navajo Gallup Water Supply ProjectFEATURE: Reach 1 PNM Option

COORDINATES: N 2,093,295.6 E 2,552,917.2 NAD 83

H O

O M

H ar dn es s

W ea th er in g

G E

U N

G R

A P

E C

O V

E R

H O

O M

H ar dn es s

W ea th er in g

G E

U N

G R

A P

D E

P T

E C

O V

E R

K -V al ue ft

/y r)

S S

A T

CLASSIFICATION AND

PHYSICAL CONDITION

N E

W N

G W

S P

C H

N T

A K

D R

N G

I N

V E

S T

N S

.G P

J G

S T

D U

S L

A B

.G D

4/ 1/

0.0 to 20.0 ft: QUATERNARY ALLUVIUM (Qal)

0.0 to 5.0 ft // CLAYEY SAND w/ GRAVEL & COBBLES :

About 40% predominately fine sand, trace medium to coarse sand; about 15% fines with medium plasticity, medium dry strength, and medium toughness; about 25% fine to coarse gravel; about 20% cobbles, maximum size, 150 mm.

5.0 to 20.0 ft // SILTY SAND w/ GRAVEL & COBBLES:

Subtle changes in percentages and moisture content but fundamentally maintains Silty Sand (SM) signature; About 60% coarse to fine, hard, subangular to subrounded sand;

about 25% nonplastic fines, rapid dilatancy, low dry strength; about 15% medium to coarse, angular, elongate, gravel - max size approx 25 mm; trace subrounded to rounded terrace cobbles, max size approx 150 mm; dry to moist in places, brown, some roots present; intermittent CaCO3 replacement, FeOx and MnOx staining and leaching, and carbonaceous / organic stringers and laminations present; generally strong reaction to HCL.

20.0 to 46.0 ft CRETACEOUS FRUITLAND FORMATION (Kf)

20.0 to 46.0 ft // SANDSTONE: Gray, fine grained, argillaceous, predominantly homogenous, & thinly to thickly bedded with intermittent very-thin interbeds; moderately hard (H4) to hard (H3) in places, slightly weathered (W3), sightly to very slightly fractured (FD2) as predominantly 90-degree mechanical breaks with trace FeOx secondary mineralization along fractures; trace carbonaceous stringers, & no reaction with dilute HCL.

STRATIGRAPHY:

0.0 to 20.0 ft QUATERNARY ALLUVIUM (Qal)

20.0 to 46.0 ft CRETACEOUS FRUITLAND FORMATION (Kf)

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

DRILLED BY: UCB Provo Drill Crew DRILLER: Braden Samuels HELPER(S): Derek Nate, Ryan Ward

PURPOSE:

Foundation investigations Reach 1 San Juan River intake site.

DRILL EQUIPMENT:

CME 85 Rubber Tire Drilling Rig

DRILL METHOD:

0.0 to 25.0 ft: 4.25" HSA Dry Core

(FADC).

25.0 to 46.0 ft: HQ3 Outer Core Assembly with 5-foot rods, American Bit Company poly-diamond drill bit, and wireline inner core assembly with 5-foot quad-latch split tube sample barrel.

DRILLING MEDIUM:

0.0 to 25.0: None

25.0 to 46.0 ft: Freshwater, no additives

CASING / DRILLING NOTES:

5/11/2023:

- Advanced FADC from 0.0 to 5.0 ft;

- CA Sample from 5.0 to 6.5 ft;

- water encountered at 5.0 ft;

- resume FADC from 6.5 to 25.0 ft (no SPT due to sample washout from terrace gravels and -cobbles).

5/12/2023:

- Advanced HQ3 from 25.0 to

46.0 ft

HOLE COMPLETION:

Backfilled with Bentonite materials

SAMPLING:

CA SAMPLE: 5.0 to 6.5 ft HQ3 A: 32.6 to 34.0 ft HQ3 B: 37.8 to 39.0 ft

(SC)gc

(SM)gc

SANDSTONE

Qal/Fill

5076.3

5050.3

5076.3

5050.3

1/3/5

(SC)gc

(SM)gc

SANDSTONE

DRILL HOLE DHR1-23-2SHEET 1 OF 1

Sandstone

Bentonite seal with NO pipe

DRILL HOLE DHR1-23-2SHEET 1 OF 1

D E

P T

F ra ct ur e D en si ty

R Q

D R

Q D

F ra ct ur e D en si ty

STATE: New Mexico

SHEET 1 OF 1

BEGUN: 5/11/2023 FINISHED: 5/12/2023

REVIEWED BY: C. Beyer

TOTAL DEPTH: 46.0 ft

ENGINEERING PROPERTIES

All angles measured from horizontal axis at zero degrees unless otherwise noted.

40-D-6499 Standard Descriptors and Descriptive Criteria for Discontinuities."

HOLE LOGGED BY: K. Graham

GRAPHIC LEGEND:

LOCATION: Reach 1 Intake

DEPTH TO WATER & ELEVATION: 7.0 ft (5089.3)

ANGLE FROM HORIZONTAL: -90o

TOP OF CASING ELEVATION: NA

TOTAL DEPTH: 46.0 ft

HOLE LOGGED BY: K. GrahamDEPTH TO BEDROCK: 20.0 ft.

NOTES

DEPTH TO BEDROCK: 20.0 ft.

REVIEWED BY: C. Beyer

NOTES

GEOLOGIC LOG OF DRILL HOLE NO. DHR1-23-2

COMMENTS:

STATE: New Mexico

SHEET 1 OF 1

WATER DEPTH MEASURED ON: 5/12/2023

PROJECT: Navajo Gallup Water Supply ProjectFEATURE: Reach 1 PNM Option

GROUND ELEVATION: 5096.3 ft

ANGLE FROM HORIZONTAL: -90o

DEPTH TO WATER & ELEVATION: 7.0 ft (5089.3)

BEGUN: 5/11/2023 FINISHED: 5/12/2023

GRAPHIC LEGEND:

GROUND ELEVATION: 5096.3 ftLOCATION: Reach 1 Intake

GEOLOGIC LOG OF DRILL HOLE NO. DHR1-23-2

WATER DEPTH MEASURED ON: 5/12/2023

PROJECT: Navajo Gallup Water Supply ProjectFEATURE: Reach 1 PNM Option

COORDINATES: N 2,093,186.9 E 2,553,263 NAD 83

H O

O M

H ar dn es s

W ea th er in g

G E

U N

G R

A P

E C

O V

E R

H O

O M

H ar dn es s

W ea th er in g

G E

U N

G R

A P

D E

P T

E C

O V

E R

K -V al ue ft

/y r)

S S

A T

CLASSIFICATION AND

PHYSICAL CONDITION

N E

W N

G W

C H

N T

A K

D R

N G

I N

V E

S T

N S

.G P

J G

S T

D U

S L

A B

0.0 to 17.5 ft QUATERNARY ALLUVIUM/FIll (Qal)

0.0 to 2.5 ft POORLY GRADED SAND WITH GRAVEL :

About 60% predominately fine sand, trace medium to coarse sand; about 5% fines with low plasticity, low dry strength and low toughness; about 35% fine to coarse gravel; maximum size, 75mm.

2.5 to 4.8 CLAYEY SAND WITH GRAVEL :

4.8 to 10.0 CLAYEY SAND :

About 70% predominately fine sand; about 30% fines with medium plasticity, medium dry strength and medium toughness; trace gravel, maximum size, 60 mm.

10.0 to 17.5 ft POORLY GRADED SAND WITH

GRAVEL :

About 60% predominately fine sand, trace medium to coarse sand; about 5 % fines with low plasticity, low dry strength and low toughness; about 35% fine to coarse gravel; maximum size, 75mm.

18.6 to 43.6.0 ft CRETACEOUS FRUITLAND FORMATION (Kf)

17.5 to 20.0 ft SANDSTONE Gray, fine grained, argillaceous, thickly to massively bedded, moderately hard (H4), to hard (H3), slightly to moderately weathered (4), no reaction with HCl.

STRATIGRAPHY:

0.0 to 17.5 ft QUATERNARY ALLUVIUM (Qal)

17.5 to 20.0 ft CRETACEOUS FRUITLAND FORMATION (Kf)

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

DRILLED BY:

Upper Colorado Drill Crew DRILLER: Braden Samuels HELPER: Derek Nate, Mike Meadows

PURPOSE:

Foundation investigations at PNM River Pumping Plant site.

DRILL EQUIPMENT:

Eijkelkamp XL 240.

DRILL METHOD:

0.0 to 25.0 Sonic Drilling with 8" casing.

DRILLING MEDIUM:

0.0 to 20.0 none.

CASING RECORD/ DRILLING

NOTES:

0.0 to 25.0 8" steel casing.

HOLE COMPLETION:

0.0 to 4.5ft 2" PVC with bentonite seal.

4.5 to 18.5 ft 16/30 sand filter pack.

6.5 to 16.5 ft 0.020 pre pack

0.020 slotted screen.

18.5 to 20.0 ft bentonite.

SAMPLING:

SPT#1 5.0 to 6.5 ft SPT#2 10.0 to 11.5 ft

(SP)g

(SC)g

(SP)gc

Qtg/Fill

5078.5

5076.0

5078.5

5076.0

10/11/4

0/0/1

(SP)g

(SC)g

(SP)gc

SS 4 4

DRILL HOLE DHR1-23-3SHEET 1 OF 1

Poorly Graded Sand with Gravel

Clayey Sand with Gravel

Clayey Sand

Sandstone

Bentonite Seal: 1 pipe group, 1 pipe

Slotted Pipe: 1 pipe group, 1 pipe

DRILL HOLE DHR1-23-3SHEET 1 OF 1

D E

P T

F ra ct ur e D en si ty

R Q

D R

Q D

F ra ct ur e D en si ty

STATE: New Mexico

SHEET 1 OF 1

BEGUN: 3/19/2023 FINISHED: 3/19/2023

REVIEWED BY: K. Graham

TOTAL DEPTH: 20.0 ft

ENGINEERING PROPERTIES

"HSA= hollow stem auger FADC= flight auger dry core HQ3= coring system SPT= standard penetration test CA= California sample NA= not available ft= feet NE= not encountered N/P= nonplastic NR= no recovery HCl= hydrochloric acid FeOx= iron oxide CaCOx= calcium carbonate MnOx= manganese oxide SpG= specific gravity SL= shrinkage limit O.D.= outside diameter = water level

All angles measured from horizontal axis at zero degrees unless otherwise noted.

The data for the center column and ""classification and physical condition"" column are based on Bureau of Reclamation Engineering Geology Field Manual and drawings titled Geology for Designs and Specifications as follows ""Drawing No. 40-D-6493 Standard Descriptors and Descriptive Criteria for Rock. Drawing No.

40-D-6499 Standard Descriptors and Descriptive Criteria for Discontinuities."""

HOLE LOGGED BY: C. Beyer

GRAPHIC LEGEND:

LOCATION: Reach 1 Intake

DEPTH TO WATER & ELEVATION: 12.0 ft (5084.0)

ANGLE FROM HORIZONTAL: -90o

TOP OF CASING ELEVATION: NA

TOTAL DEPTH: 20.0 ft

HOLE LOGGED BY: C. BeyerDEPTH TO BEDROCK: 17.5 ft.

NOTES

DEPTH TO BEDROCK: 17.5 ft.

REVIEWED BY: K. Graham

NOTES

GEOLOGIC LOG OF DRILL HOLE NO. DHR1-23-3

COMMENTS:

STATE: New Mexico

SHEET 1 OF 1

WATER DEPTH MEASURED ON: 3/19/2023

PROJECT: Navajo Gallup Water Supply ProjectFEATURE: Reach 1 PNM Option

GROUND ELEVATION: 5096.0 ft

ANGLE FROM HORIZONTAL: -90o

DEPTH TO WATER & ELEVATION: 12.0 ft (5084.0)

BEGUN: 3/19/2023 FINISHED: 3/19/2023

GRAPHIC LEGEND:

GROUND ELEVATION: 5096.0 ftLOCATION: Reach 1 Intake

GEOLOGIC LOG OF DRILL HOLE NO. DHR1-23-3

WATER DEPTH MEASURED ON: 3/19/2023

PROJECT: Navajo Gallup Water Supply ProjectFEATURE: Reach 1 PNM Option

COORDINATES: N 2,092,893.7 E 2,553,280.4 NAD 83

H O

O M

H ar dn es s

W ea th er in g

G E

U N

G R

A P

E C

O V

E R

H O

O M

H ar dn es s

W ea th er in g

G E

U N

G R

A P

D E

P T

E C

O V

E R

K -V al ue ft

/y r)

S S

A T

CLASSIFICATION AND

PHYSICAL CONDITION

N E

W N

G W

C H

N T

A K

D R

N G

I N

V E

S T

N S

.G P

J G

S T

D U

S L

A B

0.0 to 20.5 ft QUATERNARY ALLUVIUM (Qal)

0.0 to 2.0 CLAYEY SAND WITH GRAVEL :

2.0 to 3.8 POORLY GRADED SAND WITH GRAVEL

AND COBBLES :

MINUS 3-INCH FRACTION (BY MASS)

About 70% fine to coarse sand; about 25% rounded to sub rounded hard gravel; about 5% nonplastic fines with no dry strength and rapid dilatancy; maximum dimension, 75mm;

gray in color; strong reaction with HCl.

TOTAL SAMPLE (BY VOLUME): About 20 % 3- to 5-inch hard, subrounded cobbles; trace 5- to 12-inch hard subrounded cobbles; remainder minus 3-inch; maximum dimension, 200mm (sampled with 8" pipe).

3.8 to 5.0 SILTY SAND:

About 85 % fine sand; about 15% nonplastic fines with rapid dilatancy, and no dry strength; Trace medium to coarse sand, trace gravel; maximum size, 60mm.

5.0 to 7.0 ft CLAYEY SAND WITH GRAVEL :

7.0 to 17.5 ft CLAYEY SAND :

About 70% predominately fine sand, trace medium to coarse sand; about 30% fines with medium plasticity, medium dry strength and medium toughness; about 20% fine to coarse gravel; maximum size, 50 mm.

17.5 to 20.5 ft POORLY GRADED SAND WITH

GRAVEL AND COBBLES :

MINUS 3-INCH FRACTION (BY MASS)

About 70% fine to coarse sand; about 25% rounded to sub rounded hard gravel; about 5% nonplastic fines with no dry strength and rapid dilatancy; maximum dimension, 75mm;

gray in color; strong reaction with HCl.

TOTAL SAMPLE (BY VOLUME): About 25 % 3- to 5-inch hard, subrounded cobbles; trace 5- to 12-inch hard subrounded cobbles; remainder minus 3-inch; maximum dimension, 200mm (sampled with 8" pipe).

18.6 to 43.6.0 ft CRETACEOUS FRUITLAND FORMATION (Kf)

20.5 to 25.0 ft SANDSTONE Gray, fine grained, argillaceous, thickly to massively bedded, moderately hard (H4), slightly to moderately weathered (4), no reaction with HCl.

STRATIGRAPHY:

0.0 to 20.5 ft QUATERNARY ALLUVIUM (Qal)

20.5 to 25.0 ft CRETACEOUS FRUITLAND FORMATION (Kf)

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

DRILLED BY:

Upper Colorado Drill Crew DRILLER: Braden Samuels HELPER: Derek Nate, Mike Meadows

PURPOSE:

Foundation investigations at PNM River Pumping Plant site.

DRILL EQUIPMENT:

Eijkelkamp XL 240.

DRILL METHOD:

0.0 to 25.0 Sonic Drilling with 8" casing.

DRILLING MEDIUM:

0.0 to 25.0 none.

CASING RECORD/ DRILLING

NOTES:

0.0 to 25.0 ft 8" steel casing.

HOLE COMPLETION:

0.0 to 25.0 ft 13 buckets bentonite pellets.

SAMPLING:

SPT#1 5.0 to 6.5 ft SPT#2 10.0 to 11.5 ft SPT#3 15.0 to 16.5 ft

(SC)g

(SP)gc

(SC)g

(SP)gc

SNDST

130 77

Qal/Fill

5076.0

5071.5

5076.0

5071.5

1/1/5

(SC)g

(SP)gc

(SC)g

(SP)gc

SNDST 4 4

DRILL HOLE DHR1-23-4SHEET 1 OF 1

Clayey Sand with Gravel Poorly Graded Sand with Gravel

Silty Sand Clayey Sand

Sandstone

Bentonite seal with NO pipe

DRILL HOLE DHR1-23-4SHEET 1 OF 1

D E

P T

F ra ct ur e D en si ty

R Q

D R

Q D

F ra ct ur e D en si ty

STATE: New Mexico

SHEET 1 OF 1

BEGUN: 3/19/2023 FINISHED: 3/19/2023

REVIEWED BY: K. Graham

TOTAL DEPTH: 25.0 ft

ENGINEERING PROPERTIES

All angles measured from horizontal axis at zero degrees unless otherwise noted.

40-D-6499 Standard Descriptors and Descriptive Criteria for Discontinuities."""

HOLE LOGGED BY: C. Beyer

GRAPHIC LEGEND:

LOCATION: Reach 1 Intake

DEPTH TO WATER & ELEVATION: 10.0 ft (5086.5)

ANGLE FROM HORIZONTAL: -90o

TOP OF CASING ELEVATION: NA

TOTAL DEPTH: 25.0 ft

HOLE LOGGED BY: C. BeyerDEPTH TO BEDROCK: 20.5 ft.

NOTES

DEPTH TO BEDROCK: 20.5 ft.

REVIEWED BY: K. Graham

NOTES

GEOLOGIC LOG OF DRILL HOLE NO. DHR1-23-4

COMMENTS:

STATE: New Mexico

SHEET 1 OF 1

WATER DEPTH MEASURED ON: 3/19/2023

PROJECT: Navajo Gallup Water Supply ProjectFEATURE: Reach 1 PNM Option

GROUND ELEVATION: 5096.5 ft

ANGLE FROM HORIZONTAL: -90o

DEPTH TO WATER & ELEVATION: 10.0 ft (5086.5)

BEGUN: 3/19/2023 FINISHED: 3/19/2023

GRAPHIC LEGEND:

GROUND ELEVATION: 5096.5 ftLOCATION: Reach 1 Intake

GEOLOGIC LOG OF DRILL HOLE NO. DHR1-23-4

WATER DEPTH MEASURED ON: 3/19/2023

PROJECT: Navajo Gallup Water Supply ProjectFEATURE: Reach 1 PNM Option

COORDINATES: N 2,092,817.4 E 2,553,310 NAD 83

H O

O M

H ar dn es s

W ea th er in g

G E

U N

G R

A P

E C

O V

E R

H O

O M

H ar dn es s

W ea th er in g

G E

U N

G R

A P

D E

P T

E C

O V

E R

K -V al ue ft

/y r)

S S

A T

CLASSIFICATION AND

PHYSICAL CONDITION

N E

W N

G W

C H

N T

A K

D R

N G

I N

V E

S T

N S

.G P

J G

S T

D U

S L

A B

0.0 to 18.3 ft QUATERNARY ALLUVIUM (Qal)

0.0 to 8.2 ft CLAYEY SAND: about 70% predominately fine sand, about 30% fines with medium plasticity, medium dry strength, and medium toughness; trace grave and cobbles; maximum size. 125mm; grayish brown in color, moist.

8.2 to 18.3 POORLY GRADED SAND WITH GRAVEL

AND COBBLES :

MINUS 3-INCH FRACTION (BY MASS)

About 70% fine to coarse sand; about 25% rounded to sub rounded hard gravel; about 5% nonplastic fines with no dry strength and rapid dilatancy; maximum dimension, 75mm;

gray in color; strong reaction with HCl.

TOTAL SAMPLE (BY VOLUME): About 20 % 3- to 5-inch hard, subrounded cobbles; trace 5- to 12-inch hard subrounded cobbles; remainder minus 3-inch; maximum dimension, 200mm (sampled with 8" pipe).

18.6 to 43.6.0 ft CRETACEOUS FRUITLAND FORMATION (Kf)

18.3 to 20.0 ft SANDSTONE Gray, fine grained, argillaceous, thickly to massively bedded, moderately soft (H5), moderately weathered (5), no reaction with HCl. Sample pulverized by drilling process.

STRATIGRAPHY:

0.0 to 18.3 ft QUATERNARY ALLUVIUM (Qal)

18.3 to 20.0 ft CRETACEOUS FRUITLAND FORMATION (Kf)

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

DRILLED BY:

Upper Colorado Drill Crew DRILLER: Braden Samuels HELPER: Derek Nate, Mike Meadows

PURPOSE:

Foundation investigations at PNM River Pumping Plant site.

DRILL EQUIPMENT:

Eijkelkamp XL 240.

DRILL METHOD:

0.0 to 20.0 Sonic Drilling with 8" casing.

DRILLING MEDIUM:

0.0 to 20.0 none.

CASING RECORD/ DRILLING

NOTES:

0.0 to 20.0 ft 8" steel casing.

HOLE COMPLETION:

0.0 to 6.6 ft 2" PVC with bentonite seal.

6.6 to 19.6 ft 16/30 sand filter pack.

9.6 to 19.6 ft 0.020 pre pack

0.020 slotted screen.

19.6 to 20.0 ft bentonite.

SAMPLING:

SPT#1 5.0 to 6.5 ft SPT#2 10.0 to 11.5 ft

(SM)gc

Qal/fill

5077.0

5075.5

5077.0

5075.5

1/3/5

5/2/2

(SM)gc

SS 5 5

DRILL HOLE DHR1-23-5SHEET 1 OF 1

Clayey Sand

Sandstone

Bentonite Seal: 1 pipe group, 1 pipe

Slotted Pipe: 1 pipe group, 1 pipe

Bentonite: Bottom of hole

DRILL HOLE DHR1-23-5SHEET 1 OF 1

D E

P T

F ra ct ur e D en si ty

R Q

D R

Q D

F ra ct ur e D en si ty

STATE: New Mexico

SHEET 1 OF 1

BEGUN: 3/21/2023 FINISHED: 3/21/2023

REVIEWED BY: K. Graham

TOTAL DEPTH: 20.0 ft

ENGINEERING PROPERTIES

All angles measured from horizontal axis at zero degrees unless otherwise noted.

40-D-6499 Standard Descriptors and Descriptive Criteria for Discontinuities."""

HOLE LOGGED BY: C. Beyer

GRAPHIC LEGEND:

LOCATION: Reach 1 Intake

DEPTH TO WATER & ELEVATION: 11.0 ft (5084.5)

ANGLE FROM HORIZONTAL: -90o

TOP OF CASING ELEVATION: NA

TOTAL DEPTH: 20.0 ft

HOLE LOGGED BY: C. BeyerDEPTH TO BEDROCK: 18.3 ft.

NOTES

DEPTH TO BEDROCK: 18.3 ft.

REVIEWED BY: K. Graham

NOTES

GEOLOGIC LOG OF DRILL HOLE NO. DHR1-23-5

COMMENTS:

STATE: New Mexico

SHEET 1 OF 1

WATER DEPTH MEASURED ON: 3/21/2023

PROJECT: Navajo Gallup Water Supply ProjectFEATURE: Reach 1 PNM Option

GROUND ELEVATION: 5095.5 ft

ANGLE FROM HORIZONTAL: -90o

DEPTH TO WATER & ELEVATION: 11.0 ft (5084.5)

BEGUN: 3/21/2023 FINISHED: 3/21/2023

GRAPHIC LEGEND:

GROUND ELEVATION: 5095.5 ftLOCATION: Reach 1 Intake

GEOLOGIC LOG OF DRILL HOLE NO. DHR1-23-5

WATER DEPTH MEASURED ON: 3/21/2023

PROJECT: Navajo Gallup Water Supply ProjectFEATURE: Reach 1 PNM Option

COORDINATES: N 2,093,166.7 E 2,553,125 NAD 83

H O

O M

H ar dn es s

W ea th er in g

G E

U N

G R

A P

E C

O V

E R

H O

O M

H ar dn es s

W ea th er in g

G E

U N

G R

A P

D E

P T

E C

O V

E R

K -V al ue ft

/y r)

S S

A T

CLASSIFICATION AND

PHYSICAL CONDITION

N E

W N

G W

C H

N T

A K

D R

N G

I N

V E

S T

N S

.G P

J G

S T

D U

S L

A B

0.0 to 19.5 ft // QUATERNARY ALLUVIUM (Qal)

0.0 to 7.5 ft // LEAN CLAY WITH SAND:

About 80% fines with medium plasticity, high dry strength, slow dilatancy, medium toughness; about 20% predominately fine sand; maximum size, medium sand;

trace fine gravel, maximum size, 15 mm; trace FeOx; dry, brown with trace black organic zones, strong reaction to HCl.

7.5 to 19.5 ft // POORLY GRADED SAND WITH GRAVEL & COBBLES: About 50% loosely consolidated fine to medium, hard, subangular to subrounded sand;

maximum size medium sand; about 25% coarse to fine, hard, subrounded to rounded gravel; about 15% (by volume) hard, rounded cobbles; maximum size 150 mm;

about 10% fines; wet, tan to brown, strong to weak reaction with HCl.

19.5 to 30.2 ft: CRETACEOUS FRUITLAND FORMATION (Kf)

19.5 to 21.0 ft: SANDSTONE SANDSTONE: Gray, fine grained, argillaceous, hard (H3), slightly weathered to fresh (W2); thickly to massively bedded, with trace 90° mechanical breaks; no secondary staining, replacement, or accessory minerals; no reaction with HCl.

21.0 to 30.2 ft: SANDSTONE Gray, fine grained, argillaceous, homogenous, moderately hard (H4) to hard (H3), moderately to slightly weathered (W4); thickly to very thickly bedded, with intermittent 90° mechanical breaks along flat-lying bedding surface; no significant staining, secondary replacement or accessory minerals observed; no reaction with HCl.

STRATIGRAPHY:

0.0 to 19.5 ft: ENGINEERED FILL / QUATERNARY TERRACE GRAVEL (Fill / Qtg)

19.5 to 30.2 ft CRETACEOUS FRUITLAND FORMATION (Kf)

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

DRILLED BY:

Upper Colorado Drill Crew DRILLER: Braden Samuels HELPER(S): Derek Nate, Ryan Ward

PURPOSE:

Foundation investigations at PNM River Pumping Plant Intake

DRILL EQUIPMENT:

Eijkelkamp XL 240 Sonic Drilling Rig

DRILL METHOD:

0.0 to 21.0 ft: Sonic Drilling with 8" casing to bedrock;

21.0 to 30.2 ft: HQ3 Outer Core Assembly w/ American Diamond Tool poly diamond #X drill bit;

wireline inner core assembly w/ 5 ft quad-latch split tube sample barrel; 5 ft-run steel drill string rods.

DRILLING MEDIUM:

0.0 to 21.0 ft: No additive

21.0 to 30.2: Freshwater circulation system w/ no additive

CASING RECORD/ DRILLING

NOTES:

Advanced FADC from 0.0 to 21.0 ft;

advanced HQ3 from 21.0 to 30.2 ft

HOLE COMPLETION:

0.0 to 30.2 ft bentonite pellets

SAMPLING:

SPT #1: 5.0 to 6.5 CORE A: 29.0 to 30.2 ft

TD @ 30.2 ft on 5/16/2023

(CL)sg

(SM)g

SANDSTONE

Qal/Fill

5077.1

5066.4

5077.1

5066.4

1/1/5

(CL)sg

(SM)g

SANDSTONE

3 4

DRILL HOLE DHR1-23-6SHEET 1 OF 1

Silty Sand with Gravel

Sandstone

Bentonite seal with NO pipe

DRILL HOLE DHR1-23-6SHEET 1 OF 1

D E

P T

F ra ct ur e D en si ty

R Q

D R

Q D

F ra ct ur e D en si ty

STATE: New Mexico

SHEET 1 OF 1

BEGUN: 5/16/2023 FINISHED: 5/16/2023

REVIEWED BY: C. Beyer

TOTAL DEPTH: 30.2 ft

ENGINEERING PROPERTIES

All angles measured from horizontal axis at zero degrees unless otherwise noted.

40-D-6499 Standard Descriptors and Descriptive Criteria for Discontinuities."

HOLE LOGGED BY: K. Graham

GRAPHIC LEGEND:

LOCATION: Reach 1 Intake

DEPTH TO WATER & ELEVATION: 7.5 ft (5089.1)

ANGLE FROM HORIZONTAL: -90o

TOP OF CASING ELEVATION: NA

TOTAL DEPTH: 30.2 ft

HOLE LOGGED BY: K. GrahamDEPTH TO BEDROCK: 19.5 ft.

NOTES

DEPTH TO BEDROCK: 19.5 ft.

REVIEWED BY: C. Beyer

NOTES

GEOLOGIC LOG OF DRILL HOLE NO. DHR1-23-6

COMMENTS:

STATE: New Mexico

SHEET 1 OF 1

WATER DEPTH MEASURED ON: 5/16/2023

PROJECT: Navajo Gallup Water Supply ProjectFEATURE: Reach 1 PNM Option

GROUND ELEVATION: 5096.6 ft

ANGLE FROM HORIZONTAL: -90o

DEPTH TO WATER & ELEVATION: 7.5 ft (5089.1)

BEGUN: 5/16/2023 FINISHED: 5/16/2023

GRAPHIC LEGEND:

GROUND ELEVATION: 5096.6 ftLOCATION: Reach 1 Intake

GEOLOGIC LOG OF DRILL HOLE NO. DHR1-23-6

WATER DEPTH MEASURED ON: 5/16/2023

PROJECT: Navajo Gallup Water Supply ProjectFEATURE: Reach 1 PNM Option

COORDINATES: N 2,093,247.2 E 2,553,229.2 NAD 83

H O

O M

H ar dn es s

W ea th er in g

G E

U N

G R

A P

E C

O V

E R

H O

O M

H ar dn es s

W ea th er in g

G E

U N

G R

A P

D E

P T

E C

O V

E R

K -V al ue ft

/y r)

S S

A T

CLASSIFICATION AND

PHYSICAL CONDITION

N E

W N

G W

C H

N T

A K

D R

N G

I N

V E

S T

N S

.G P

J G

S T

D U

S L

A B

0.0 to 18.6 ft QUATERNARY ALLUVIUM (Qal)

0.0 to 18.6 ft SILTY SAND WITH GRAVEL: About 55% coarse to fine, hard, subangular to subrounded sand; about 30% nonplastic fines, rapid dilatancy, no dry strength; about 15% coarse to fine, hard, subangular to subrounded gravel, maximum size 40 mm; trace cobbles, maximum size 100 mm; dry, tan, some roots present; strong reaction with HCL.

18.6 to 43.6.0 ft CRETACEOUS FRUITLAND FORMATION (Kf)

18.6 to 35.2 ft SANDSTONE: Gray, fine grained, argillaceous, massively bedded, moderately hard (H4), slightly to moderately weathered (4), no reaction with HCl.

35.2 to 36.4 ft SANDSTONE/CLAYSTONE: Gray, fine grained, argillaceous, laminated to thinly interbedded sandstone and claystone, moderately hard (H4) to very soft (H7), slightly to moderately weathered (4) to intensely weathered (W7), no reaction with HCl.

36.4 to 37.3 ft SANDSTONE: Gray, fine grained, argillaceous, massively bedded, moderately hard (H4), slightly to moderately weathered (W4), no reaction with HCl.

37.2 to 37.8 ft SANDSTONE/CLAYSTONE: Gray, fine grained, argillaceous, laminated to thinly interbedded sandstone and claystone, moderately hard (H4) to very soft (H7), slightly to moderately weathered (4) to intensely weathered (W7), no reaction with HCl.

37.8 to 43.6 ft SANDSTONE: Gray, fine grained, argillaceous, massively bedded, moderately hard (H4), slightly to moderately weathered (4), no reaction with HCl.

STRATIGRAPHY:

0.0 to 18.6 ft QUATERNARY ALLUVIUM (Qal)

18.6 to 43.6 ft CRETACEOUS FRUITLAND FORMATION (Kf)

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

DRILLED BY:

Upper Colorado Drill Crew DRILLER: CJ. Webber HELPER: Morgan Janisse, Andrew Heath

PURPOSE:

Foundation investigations adjacent to existing PNM River Pumping Plant.

DRILL EQUIPMENT:

CME 85 Rubber Tire Drilling Rig

DRILL METHOD:

0.0 to 18.6: 41/4" HSA with dry core system. No SPTs performed in coarse grained material.

18.6 to 43.6 HQ3 diamond core drilling system with 5-foot-long split tube sample barrel.

DRILLING MEDIUM:

0.0 to 18.6 none.

18.6 to 43.6 water.

CASING RECORD/ DRILLING

NOTES:

0.0 to 18.6 HSA

18.6 to 43.6 HQ3

HOLE COMPLETION:

0.0 to 6.9 ft 2" PVC with bentonite seal flush mount manhole.

6.9 to 19.9 ft 16/30 sand filter pack.

7.9 to 17.9 ft 0.020 steel wire wrapped slotted screen.

19.9 to 43.6 ft bentonite.

SAMPLING:

27.4 to 28.1 ft: HQ3-A

31.9 -33.9 ft: HQ3-B

33.6 to 35.2 ft: HQ3-C

(SM)g

SNDST

CLST/SS

SNDST

CLST/SS

SNDST

Qal

5078.8

5053.8

5078.8

5053.8

1/2/4

1/1/1

10/13/13

8/18/18

34/45/55

(SM)g

SNDST

CLST/SS

SNDST

CLST/SS

SNDST

4 4

DRILL HOLE DHR1-23-7SHEET 1 OF 1

Silty Sand with Gravel Sandstone

Interbedded claystone and sandstone

Bentonite Seal: 1 pipe group, 1 pipe

Filter Pack: 1 pipe group, 1 pipe

Slotted Pipe: 1 pipe group, 1 pipe

Bentonite: Bottom of hole

DRILL HOLE DHR1-23-7SHEET 1 OF 1

D E

P T

F ra ct ur e D en si ty

R Q

D R

Q D

F ra ct ur e D en si ty

STATE: New Mexico

SHEET 1 OF 1

BEGUN: 3/5/2023 FINISHED: 3/16/2023

REVIEWED BY: C. Beyer

TOTAL DEPTH: 43.6 ft

ENGINEERING PROPERTIES

All angles measured from horizontal axis at zero degrees unless otherwise noted.

40-D-6499 Standard Descriptors and Descriptive Criteria for Discontinuities."

HOLE LOGGED BY: K. Graham, C. Beyer

GRAPHIC LEGEND:

LOCATION: Reach 1 Intake

DEPTH TO WATER & ELEVATION: 7.3 ft (5090.1)

ANGLE FROM HORIZONTAL: -90o

TOP OF CASING ELEVATION: NA

TOTAL DEPTH: 43.6 ft

HOLE LOGGED BY: K. Graham, C. BeyerDEPTH TO BEDROCK: 18.6 ft.

NOTES

DEPTH TO BEDROCK: 18.6 ft.

REVIEWED BY: C. Beyer

NOTES

GEOLOGIC LOG OF DRILL HOLE NO. DHR1-23-7

COMMENTS:

STATE: New Mexico

SHEET 1 OF 1

WATER DEPTH MEASURED ON: 3/16/2023

PROJECT: Navajo Gallup Water Supply ProjectFEATURE: Reach 1 PNM Option

GROUND ELEVATION: 5097.4 ft

ANGLE FROM HORIZONTAL: -90o

DEPTH TO WATER & ELEVATION: 7.3 ft (5090.1)

BEGUN: 3/5/2023 FINISHED: 3/16/2023

GRAPHIC LEGEND:

GROUND ELEVATION: 5097.4 ftLOCATION: Reach 1 Intake

GEOLOGIC LOG OF DRILL HOLE NO. DHR1-23-7

WATER DEPTH MEASURED ON: 3/16/2023

PROJECT: Navajo Gallup Water Supply ProjectFEATURE: Reach 1 PNM Option

COORDINATES: N 2,093,235.3 E 2,553,182.8 NAD 83

H O

O M

H ar dn es s

W ea th er in g

G E

U N

G R

A P

E C

O V

E R

H O

O M

H ar dn es s

W ea th er in g

G E

U N

G R

A P

D E

P T

E C

O V

E R

K -V al ue ft

/y r)

S S

A T

CLASSIFICATION AND

PHYSICAL CONDITION

N E

W N

G W

C H

N T

A K

D R

N G

I N

V E

S T

N S

.G P

J G

S T

D U

S L

A B

0.0 to 20.5 ft // QUATERNARY ALLUVIUM (Qal)

0.0 to 4.0 ft // LEAN CLAY WITH SAND:

About 80% fines with medium plasticity, high dry strength, slow dilatancy, medium toughness; about 20% predominately fine sand; maximum size, medium sand;

trace fine gravel, maximum size 15 mm; trace FeOx; dry, brown with trace black organic zones, strong reaction to HCl. Encountered groundwater @ 4.5 ft.

4.0 to 15.0 ft // SANDY LEAN CLAY WITH GRAVEL About 60% fines with medium plasticity, medium dry strength, slow dilatancy, and medium toughness; about 25% predominantly fine sand; maximum size, medium sand; about 15% fine, hard, subrounded to rounded gravel;

maximum size 20 mm; moist; dark brown with black organic rich zones; strong reaction with HCL

MINUS 3-INCH FRACTION (BY MASS)

15.0 to 20.5 ft // POORLY GRADED SAND WITH GRAVEL & COBBLES: About 80% loosely consolidated fine to medium, hard, subangular to subrounded sand;

maximum size medium sand; about 10% fine, hard, subrounded to rounded gravel; maximum size 20 mm;

about 10% fines; wet, tan to brown, strong reaction with

HCL.

TOTAL SAMPLE (BY VOLUME): About 20 % 3- to 5-inch hard, subrounded cobbles;…

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File details come from the government source that posted it. Updated Aug 22, 2025.