FTG251 Final Geotechnical Data Report 20221116.pdf

Geotechnical Data Report Maintenance Support Facility

(FTG251)

Fort Greely, Alaska

Alaska District, Pacific Ocean Division

16 November 2022

PN 692

Status: Final

US

A rm y

Co rp s of

E ng in ee rs

Al as ka D is tri ct

DEPARTMENT OF THE ARMY

U.S. ARMY CORPS OF ENGINEERS, ALASKA DISTRICT

P.O. BOX 6898

JBER, AK 99506-0898

CEPOA-ECG-M 16 November 2022

MEMORANDUM FOR

Military Project Management (CEPOA-PM-M), Matthew Johnson

SUBJECT: Draft Geotechnical Data Report for the Maintenance Support Facility (FTG251), Fort Greely, Alaska.

1. Enclosed is the Draft Geotechnical Data Report for the Maintenance Support Facility

(FTG251) located in Fort Greely, Alaska. Included with the report are the Project Location and Vicinity Map, a Test Boring Location Map, a discussion of the geotechnical findings, and exploration logs for the project.

2. Questions should be addressed to Oliver Brown at 907-753-5554 or Amy Steiner at 907-753-

2800.

OLIVER S. BROWN, E.I.T.

Civil Engineer

CEPOA-ECG-M

AMY L. STEINER, P.E.

Chief, Geotechnical and Materials Section

CEPOA-ECG-M

JOHN J. RAJEK, P.E.

Chief, Geotechnical and Engineering Services Branch

CEPOA-ECG

Maintenance Support Facility (FTG251), Fort Greely, Alaska i

Geotechnical Data Report November 2022 U.S. Army Corps of Engineers

Table of Contents 1 Introduction

2 Location and Project Description

3 Previous Geotechnical Investigation

4 Regional Geology

5 Field Exploration

Drilling Operations

Field Soil Sampling

Test Boring Locations

6 Laboratory Testing and Soil Classification

7 Site Conditions

Surface Conditions

Subsurface Conditions

7.2.1 Coarse Grained Soils

7.2.2 Groundwater

7.2.3 Seasonally Frozen Soils

7.2.4 Permafrost Soils

7.2.5 Potential Soil Contamination

7.2.6 Liquefiable Soils

8 Earthquake Ground Motions

APPENDIX A – LOCATION MAPS

Project Location and Vicinity Map .................................................................................... Sheet A-1 Test Boring Location Map ................................................................................................. Sheet A-2

APPENDIX B – EXPLORATION LOGS

Key to Exploration Logs ........................................................................................... 1 Sheet Test Boring Location Coordinates ............................................................................ 1 Sheet Exploration Logs .................................................................................................... 17 Sheets

APPENDIX C – LABORATORY TESTING RESULTS

Laboratory Testing Summary .................................................................................... 1 Sheet Individual Laboratory Testing Results .................................................................... 40 Sheets

ANNEX – HISTORICAL GEOTECHNICAL REPORTS

FTG233 Communications Center Geotechnical Data Report ................................ 44 Sheets

Maintenance Support Facility (FTG251), Fort Greely, Alaska 1

U.S. Army Corps of Engineers

1 Introduction The purpose of this report is to identify surface and subsurface conditions at the proposed Maintenance Support Facility (FTG251) located on Fort Greely, Alaska. This report presents a summary of the findings based on site observations and results of the field exploration and laboratory testing.

2 Location and Project Description The project site is a vacant lot bounded by Patricia Pike Road to the west, E Post Road to the southwest, and 4th Avenue to the north. These features are illustrated in the project vicinity map located in Appendix A.

The project consists of constructing a Maintenance Support Facility for the Missile Defense Agency on the Missile Defense Complex (MDC). The project will provide warehouse, maintenance shops, management support areas, building maintenance/support areas, and vehicle storage space to provide recurring maintenance for the weapon system and be postured to quickly respond to mission essential weapons system failures. The design will include typical commercial building components, including electrical medium voltage and low voltage distribution, HVAC and ventilation systems, lightning protection and equipment grounding, fire protection (alarm, reporting and suppression), potable and fire water, storm drainage, sanitary sewer and inside plant and outside plant communications systems. Supporting facilities include but are not limited to site development, utilities and connections, lighting, paving, parking, walkways, curbs and gutters, landscaping, and signage.

Geotechnical drilling for this project was performed in two adjacent locations separated by a security fence. This security fence is a temporary boundary between the MDC and the Construction Free Zone (CFZ) that was created to give contractors site access without requiring all personnel and equipment to pass through the MDC security checkpoint. The CFZ fence will be removed and the CFZ laydown site will be returned to its original condition before construction of the Maintenance Support Facility begins.

3 Previous Geotechnical Investigation A previous geotechnical investigation was performed in the vicinity of the project area for the Fort Greely Alaska Communications Center and is presented in the following report archived in the Alaska District Geotechnical and Materials Section network.

• Geotechnical Data Report, Fort Greely Alaska Communications Center (FTG233), Fort Greely, Alaska, U.S. Army Corps of Engineers – Alaska District (August 2019)

The historic geotechnical investigation is included as an Annex to this report.

4 Regional Geology Fort Greely is located just south of Delta Junction, Alaska in the eastern reaches of the Tanana Kuskokwim Lowland. The Tanana Kuskokwim Lowland is a broad depression bordering the north side of the Alaska Range. The central complex of Fort Greely is bordered on the west by the Delta River and on the east by Jarvis Creek. It is situated on a low alluvial terrace having gently undulating surfaces. The ground surface elevations in the project area range from approximately

Maintenance Support Facility (FTG251), Fort Greely, Alaska 2

U.S. Army Corps of Engineers

1200 to 1400 feet MSL. The surface topography slopes downward to the north at about 20 to 30 feet per mile.

A geologic map detail of the area is provided in Figure 4-1. A full geologic map can be found in the USGS publication “Geologic Map of Central (Interior) Alaska, Northeastern Region (1998).”

The geologic deposits on Fort Greely are primarily of moraine and alluvial outwash origin. At least four Quaternary glaciations, each apparently less extensive than the previous, are recorded in the Delta River area. Glaciers from these glaciations pushed north from the crest of the Alaska Range. They were generally confined to mountain valleys terminating into spreading bulbs onto the lowland of the Tanana River valley. In addition, some ice from the south side of the crest exited north through the Delta River valley. The earliest recognized glacial advance is the Darling Creek Glaciation of early Quaternary age. The succeeding glacial advance was the Delta Glaciation, recognized by well-preserved breached moraines. The next two glacial advances occurred in late Quaternary time and are closely related in extent and age. On the north side of the Alaska Range, they have been grouped into one broad glaciation termed the Donnelly Glaciation.

The moraine deposits are bordered by alluvial outwash fans in the Fort Greely area. The central complex of Fort Greely is located on the outwash apron fronting the Donnelly moraine. This outwash is reported to be underlain by till from the Delta Glaciation which is underlain by an older gravel. The Donnelly and Delta moraine deposits are generally coarse, unstratified, unsorted till ranging from silty gravel with sand to sandy silt with gravel. The outwash consists primarily of fine to coarse gravel with sand and contains beds and lenses of sand and silt. A mantle of loess and organic silt ranging from a few inches to several feet in thickness generally overlies the area.

Figure 4-1. Geology in the Vicinity of Fort Greely (excerpt from “USGS Geologic Map of Central

(Interior) Alaska, Northeastern Region (1998)”)

Maintenance Support Facility (FTG251), Fort Greely, Alaska 3

U.S. Army Corps of Engineers

5 Field Exploration The subsurface exploration for this project was conducted from 30 August to 02 September 2022.

A total of 15 boreholes were drilled to depths 15 to 50 feet below the ground surface (bgs). These borings were designated permanent numbers AP-2928 to AP-2942.

Drilling Operations Geotek Alaska, Inc., under contract with the U.S. Army Corps of Engineers - Alaska District (USACE-AD), performed the geotechnical drilling using a Geoprobe 8040DT drill rig with an automatic trip hammer. Boreholes were drilled using 4.25-inch inside diameter hollow stem auger.

Engineers with USACE-AD supervised the drilling and logged samples collected from the test borings in accordance with ASTM D2488, “Description and Identification of Soils (Visual – Manual Procedure).” Soil samples were assigned frost classifications based on the Unified Facilities Criteria (UFC) 3-250-01 Pavement Design for Roads and Parking Areas, Table 19-2 “Frost Design Soil Classification.” Estimated frost classifications are based on ASTM soil classifications.

Exploration logs are presented in Appendix B.

Field Soil Sampling Soil samples were obtained using an unlined large penetration test (LPT) sampler. The LPT sampler consisted of a three-inch outside diameter and 2.5-inch inside diameter split-barrel sampler typically advanced 24 inches into the undisturbed soils ahead of the auger. Samplers were driven into the soil using a 340-pound automatic trip hammer free-falling a vertical distance of 30 inches on NWJ rods. Soil samples were generally collected at the surface, 2.5 feet, 4.5 feet,

7.5 feet, 9.5 feet, and at five-foot intervals thereafter to the limit of the exploration. Sampling procedures were in general accordance with ASTM D1586, “Standard Test Method for Penetration Test and Split-Barrel Sampling of Soils”, with modifications for use of the LPT sampler and 340-pound hammer. The number of blows required to drive each six-inch increment is recorded on the exploration logs and shown in Appendix B. Soil samples were double-sealed in polyethylene bags to preserve natural moisture content.

Test Boring Locations USACE-AD located the test boring locations using a recreational handheld Global Positioning System (GPS) on 29 August 2022. Horizontal coordinates are based on Alaska State Plane Coordinates (ASP) Zone 3, North American Datum (NAD) 83 (1992) in U.S. survey feet. The elevations at each test boring were determined by importing the horizontal locations of the test borings into a CAD drawing titled “FTG233-VF-01”, dated 14 August 2019, and a CAD drawing titled “FTG251-VF-01” dated 4 November 2022. Test boring elevations were selected from the digital surface within the topographic survey drawing. Vertical control from the 2019 survey is referenced to NAVD88 in U.S. feet based on U.S.C.&G.S. monument “V-95” (PID TT2593). A summary table of boring coordinates is provided in Appendix B and the Test Boring Location Map is located in Appendix A.

6 Laboratory Testing and Soil Classification A laboratory testing program was established to classify and determine the physical and engineering properties of encountered soils. The program consisted of particle-size analysis, moisture content, engineering classification, and frost classification. Terra Firma Testing, under contract with USACE-AD, performed the tests using the latest version of the test standards listed in Table 6-1. Laboratory test results are provided in Appendix C.

Maintenance Support Facility (FTG251), Fort Greely, Alaska 4

U.S. Army Corps of Engineers

Table 6-1. Soils Laboratory Test Standards Test Designation Test Description ASTM D7928 Standard Test Method for Particle-Size Analysis of Soils (Sieve and

Hydrometer)

ASTM D2216 Standard Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass

ASTM D2487 Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)

ASTM C136 Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates

ASTM D7928 Standard Test Method for Particle Size Distribution (Gradation) of Fine-Grained Soils using Sedimentation (Hydrometer) Analysis

7 Site Conditions Soil descriptions and classifications contained in this report and presented on the final exploration logs are the project engineer’s interpretation of the field logs and results of the laboratory testing program. Stratification lines represent approximate boundaries between soil types. Transitions are often gradual or not discernible by drill action.

Surface Conditions The project site is in the southwest corner of a large open field bound by a large snow fence to the west, 4th Avenue to the north and unnamed roads to the east and south. The project site located within the MDC is covered with a thin, two-inch thick grass-root organic mat. The surface located within the CFZ is compacted local material with no organic mat. Cobbles are scattered over the entire site. The topography is relatively flat, and elevations range from approximately 1,342 to 1,366 feet NAVD88. At the time of writing, survey was not completed for the site, and elevations in this report are based on the 2019 survey performed as part of the FTG233 project.

Overhead utilities are not present within the project limits. There are no known buried utilities in the project area.

Subsurface Conditions Details of the soils encountered by the test borings are shown on the Exploration Log sheets in Appendix B. The general subsurface conditions encountered and their pertinent characteristics are described in the following paragraphs.

7.2.1 Coarse Grained Soils

Soils throughout the project area generally consisted of medium to very dense Gravel with sand trending to Silty Sand with gravel. Relative density and fines content increased with depth. Frost susceptibility of soils was estimated using frost groups defined by UFC 3-20-01. Based on laboratory testing and field observations, the soils encountered in this investigation are considered frost susceptible, with estimated frost group including F2, F3, S1 and PFS. The top 15 feet of soil are generally PFS. No fill material was identified. Cobbles were encountered throughout the upper 13 to 20 feet of the borings.

Laboratory tests were performed on select soil samples. Natural gravimetric moisture contents ranged from 1% to 7%. Grain size analysis tests indicated 3% to 40% of material passing a No.

200 sieve, with 0% to 19% of material smaller than 0.02mm. Based on laboratory tests performed, the soils were classified ranging with depth from Well-graded Gravel with sand (GW) to Silty Sand

Maintenance Support Facility (FTG251), Fort Greely, Alaska 5

U.S. Army Corps of Engineers w/ gravel (SM). Relative density and silt content increased with depth. A detailed laboratory summary is provided in Appendix C. An example of Well-graded Gravel with sand (GW) is shown in Figure 7-1 and an example of Silty Sand with gravel (SM) is shown in Figure 7-2.

Figure 7-1. Typical Well-graded Gravel with sand (AP-2942, 4.5 to 6.5 feet bgs)

Figure 7-2. Typical Silty Sand with gravel (AP-2939, 29.5 to 31.5 feet bgs)

Maintenance Support Facility (FTG251), Fort Greely, Alaska 6

U.S. Army Corps of Engineers

7.2.2 Groundwater

Groundwater was not encountered during the site investigation. Previous USACE-AD investigations encountered groundwater at depths of greater than 250 feet below ground surface near the landfill expansion project (USACE, 1994), located approximately one mile southeast of the project site. It is not expected that long-term water table conditions would be involved in any construction considerations. Perched groundwater may be encountered in shallow excavations depending on location, precipitation, and time of year.

7.2.3 Seasonally Frozen Soils

Seasonally frozen soils were not encountered in any of the test borings drilled in September 2022.

Seasonal frost at Fort Greely can penetrate to 15 feet or deeper during a cold winter in areas with little or no snow cover.

7.2.4 Permafrost Soils

Fort Greely is within a discontinuous permafrost area. No permafrost was observed in test borings drilled for this project.

7.2.5 Potential Soil Contamination

Soil samples were not scanned for volatile organic compounds by the USACE-AD during the field investigation. There was no indication of contaminated material such as chemical odor or discoloration of recovered soil samples.

7.2.6 Liquefiable Soils

No liquefiable soils were encountered during the site investigation.

8 Earthquake Ground Motions The project is in an area where major earthquakes can and have occurred. The proposed facility is assigned a Risk Category III in accordance with Table 2.2 of the UFC 3-301-01 Structural Engineering (2019) since it represents a low hazard to human life in the event of failure. The structure is assigned a Seismic Design Category D per Section 11.6 of ASCE 7-16 (2018), since the mapped spectral response acceleration parameter at 1-second period, S1, is greater than 0.5 at the project site. Note that per ASCE 7-16 section 11.4.8, a site-specific response analysis is required for the project area. Seismic data for Fort Greely, Alaska was determined using the probabilistic seismic hazard maps of Alaska provided by the U.S. Geological Survey (USGS) and the ASCE 7 Hazard Tool and is shown in Table 8-1 using a 2% probability of exceedance in 50 years. The specified design ground motions are for Site Class D. Seismic design ground motion parameters are provided for both ASCE 7-16 and ASCE 7-22 as the design code for the facilities has not been confirmed at the time of writing.

Maintenance Support Facility (FTG251), Fort Greely, Alaska 7

U.S. Army Corps of Engineers

Table 8-1. Seismic Design Ground Motion Parameters Parameter ASCE 7-16 ASCE 7-22 Site Class D D

Return Period 2475 2475 Maximum Considered Earthquake (MCE) 6.8 6.8

Site-Specific PGAM 0.38g 0.39

SD1 * 0.58

SDs 0.60g 0.72

*site-specific response spectrum required per ASCE 7-16

Maintenance Support Facility (FTG251), Fort Greely, Alaska

U.S. Army Corps of Engineers

APPENDIX A

LOCATION MAPS

Project Location and Vicinity Map ............................................................................ Sheet A-1 Test Boring Location Map ....................................................................................... Sheet A-2

U.S. Army Corps of Engineers

APPENDIX B

EXPLORATION LOGS

Key to Exploration Logs ............................................................................................. 1 Sheet Test Boring Location Coordinates .............................................................................. 1 Sheet Exploration Logs AP-2928 through AP-2942 .......................................................... 17 Sheets

UNIFIED SOIL CLASSIFICATION AND SYMBOL CHART (modified from ASTM D2487)

O

R

M

O R

E

P

A S

S E

S

T H

E

N

O

S

I E

V E

M O

R E

T

H A

N

R

T

A I N

E D

O N

N

I E

V E

F I N

E

G

R A

I N

D

I L

S C

O A

R S

E

G

R A

I N

D

I L

S

Well-graded gravels, gravel-sand mixtures, little or no fines

GW

CLEAN

GRAVELS

GRAVEL AND

GRAVELLY

SOILS

Inorganic clays of low to medium plasticity, gravelly clays, sandy clays, silty clays, lean clays

Well-graded sands, gravelly sands, little or no fines

Peat humus, swamp soils with high organic content

Organic clays of high plasticity, fat clays

Inorganic clays of high plasticity, fat clays

Inorganic silts, macaceous or dimaceous fine sandy or silty soils, elastic silt

Organic silts and organic silty clays of low plasticity

Inorganic silts, very fine sands, rock flour, silty/clayey fine sands or clayey silts of slight plasticity

Clayey sands, sand-clay mixtures

Silty sands, sand-silt mixtures

Poorly graded sands, gravelly sands, little or no fines

Clayey gravels, gravel-sand-clay mixtures

Silty gravels, gravel-sand-silt mixtures

Poorly graded gravels, gravel-sand mixtures, little or no fines

SILTS AND CLAYS

HIGHLY ORGANIC SOILS

PT

OH

CH

MH

OL

>12% FINES

>12% FINES

<5% FINES

<5% FINES

SANDS WITH

FINES

CLEAN

SANDS

GRAVELS

WITH FINES

SAND AND

SANDY

SOILS

> 50% OF COARSE

FRACTION PASSING

NO. 4 SIEVE

> 50% OF COARSE

FRACTION

RETAINED ON NO. 4

SIEVE

CL

ML

SC

SM

SP

SW

GC

GM

GP

DESCRIPTIONSMAJOR DIVISIONS SYMBOLS

LIQUID LIMIT <50

SILTS AND CLAYS

LIQUID LIMIT ≥50

I f s o i l c o n t a i n s s a n d a d d w i t h n d

I f s o i l c o n t a i n s g r a v e l a d d w i g r a v e l

I f s o i l c o n t a i n s c o a r s e g r a i n e d o i l f r o m o a w i n d o r w i t h g r a v e l f o r w h i c h e v e r t y p e i s p r o m i n e n t o r f o r a a n d y o r g r a v e l l y

P L

A S

T I C

I T

Y

C

H A

R T

C u

≥ 4 AND 1 ≤ C

c

≤ 3

C u

< 4 AND/OR [C

c

< 1 OR C

c

> 3]

FINES CLASSIFY AS ML OR MH

FINES CLASSIFY AS CL OR CH

C u

≥ 6 AND 1 ≤ C

c

≤ 3

C u

< 6 AND/OR [C

c

< 1 OR C

c

> 3]

FINES CLASSIFY AS ML OR MH

FINES CLASSIFY AS CL OR CH

SAMPLER ABBREVIATIONS/SYMBOLS

AUGER

CORE

GRAB

LPT

NR

SH

SPT

UNDIST

VANE

Auger Cuttings

Rock Core

Grab Sample

Large Penetration Test

No Recovery

Shelby Tube

Standard Penetration Test

(ASTM D 1586)

Undisturbed Sample

Vane Shear

FROST DESIGN SOIL CLASSIFICATION

(UFC 3-250-01FA, TABLE 18-2)

F1

F2

F3

F4

NFS

PFS

S1

S2

Gravelly Soils

Gravelly Soils, Sands

Gravelly Soils, Sands, Except Very Fine Silt

Sands

All Silts, Very Fine Silty Sands, Clays, PI >12, Varved Clays and Other Fine-Grained

Banded Sediments

Non-Frost-Susceptible

Possibly Frost Susceptible

Gravelly Soils

Sandy Soils

GROUP

TYPICAL SOILS

DESCRIPTION OF

FROZEN SOILS (ASTM D4083)

ICE NOT VISIBLE

Nf

Nbn

Nbe

Vx

Vc

Vr

Vs

Poorly Bonded or Friable

Well Bonded, No Excess Ice

Well Bonded, Excess Ice

Crystals

Ice Coatings or Particles

Ice Formations

Stratified or Distinctly Oriented Ice Formations

GROUP DESCRIPTION

VISIBLE ICE, < 1 IN. THICK

VISIBLE ICE, > 1 IN. THICK

Ice

Ice without Soil Inclusions

Ice + Soil

Ice with Soil Inclusions

COMPONENT DEFINITIONS BY GRADATION

COMPONENT

BOULDERS

COBBLES

GRAVEL

COARSE GRAVEL

FINES GRAVEL

SAND

COARSE SAND

MEDIUM SAND

FINE SAND

SILT & CLAY (FINES)

> 12 IN. (300 MM)

12 IN. (300 MM) to 3 IN. (75 MM)

3 IN. (75 MM) to #4 SIEVE (4.76 MM)

SIZE RANGE

3 IN. (75 MM) to 3/4 IN. (18.75 MM)

3/4 IN. to #4 SIEVE (4.76 MM)

#4 (4.76 MM) to #200 (0.074 MM)

#4 (4.76 MM) to #10 (2.0 MM)

#10 (2.0 MM) to #40 (0.42 MM)

#40 (0.42 MM) to #200 (0.074 MM)

< #200 (0.074 MM)

OTHER MATERIAL SYMBOLS

ASPHALT PAVEMENT

BASALT

BEDROCK

PORTLAND CEMENT

CONCRETE

COBBLES/BOULDERS

NOTES:

1: Coefficient of uniformity : C u

= D

/D

2: Coefficient of curvature: C c

= [(D

] / (D x D

3: D

(x%) is soil particle diameter where x% is % finer.

4: Gravels or sands with 5% to 12% fines require dual symbols (GW-GM, GW-GC, GP-GM, GP-GC, SW-SM, SW-SC, SP-SM, SP-SC) and add "with clay" or "with silt" to group name. If fines classify as CL-ML for GM or SM, use dual symbol GC-GM or SC-SM.

Dry

Moist

Wet

Absence of moisture, dusty, dry to the touch

Damp, but no visible water

Visible free water, usually soil is below water table

CRITERIA FOR DESCRIBING

MOISTURE CONDITION (ASTM D2488)

PRIMARILY ORGANIC MATTER, DARK IN COLOR, AND ORGANIC ODOR

TEST BORING NOTES:

1: The number of blows required to drive each six-inch increment is recorded on the exploration logs. The reported blow count is an indication of the relative density or consistency of the soil. It should be noted that blow counts obtained in frozen soils do not represent the penetration of those same soils in a thawed state.

2: Soil classifications and descriptions reported on the exploration logs are in accordance with ASTM D

2488, Standard Practice for Description and Identification of Soils (Visual-Manual Procedure) and ASTM

D 2487, Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification

System).

3: The soil classifications and descriptions contained on the exploration logs are the project engineer's interpretation of the field logs and results of the laboratory testing program. The stratification lines shown on the exploration logs represent approximate boundaries between soil types. The actual transitions are often gradual or not discernable by drill action.

TEST BORING NOTES

NOTES TO UNIFIED SOIL CLASSIFICATION AND SYMBOL CHART

Geotechnical and Materials

CORPS OF ENGINEERS

ALASKA DISTRICT

EXPLORATION LOG LEGEND

CORPS OF ENGINEERS U.S. ARMY

CORPS OF ENGINEERS

U.S. ARMY

AutoCAD SHX Text

SY

AutoCAD SHX Text

EMA 3D

AutoCAD SHX Text

LOG LEGEND

AutoCAD SHX Text

DATE: MAY 2018

AutoCAD SHX Text

SCALE: NTS

AutoCAD SHX Text

DRAWN/RVW: GF/CJC

Test Boring Location Coordinates Name Field ID Easting Northing Elevation (ft)

AP-2928 TB-01 1,683,106 3,640,517 1357.8

AP-2929 TB-02 1,683,313 3,640,423 1356.0

AP-2930 TB-03 1,683,520 3,640,329 1355.3

AP-2931 TB-04 1,683,185 3,640,415 1357.9

AP-2932 TB-05 1,683,392 3,640,321 1356.5

AP-2933 TB-06 1,683,056 3,640,407 1359.5

AP-2934 TB-07 1,683,264 3,640,313 1357.9

AP-2935 TB-08 1,683,471 3,640,220 1356.2

AP-2936 TB-09 1,683,135 3,640,306 1359.7

AP-2937 TB-10 1,683,342 3,640,212 1357.4

AP-2938 TB-11 1,683,007 3,640,298 1360.7

AP-2939 TB-12 1,683,214 3,640,204 1358.6

AP-2940 TB-13 1,683,421 3,640,110 1357.7

AP-2941 TB-14 1,683,475 3,641,198 1348.6

AP-2942 TB-15 1,683,426 3,641,089 1351.8

- North American Datum of 1983 (NAD83)

- Alaska State Plane Zone 3 (ASPZ3)

- Coordinates estimated from handheld GPS. Survey of site not completed as of November 2022.

- NAVD88 elevations estimated from historic survey.

ELEV DEPTH

0.17

23.00

29.50

30.50

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

TOPSOIL: Approximately 2" Organic mat

WELL GRADED GRAVEL WITH SAND

(GW); gray to brown, moist, max size =

2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, Gravels and cobbles fractured while driving

(GCFWD)

SILTY GRAVEL WITH SAND (GM);

brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

SILTY SAND WITH GRAVEL (SM);

brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

Borehole finished at 30.5

Fr oz en C la ss

Fr os t C la ss uf c3

-2

PFS

PFS

F1

F3

TY

PE

BL

O

W S/

0.

5f t

N

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

GW

GM

SM

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2928

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 1

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3640516.65 E: 1683105.90 Handheld GPS

2. HOLE NUMBER

AP-2928

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Aug 31 2022

COMPLETED

Aug 31 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1357.8'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 30.5' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 30.5'

17. SIGNATURE AND TITLE OF INSPECTOR

Oliver Brown

USACE FORM 1836 Boring Designation AP-2928 Sheet 1 of 1

23.00

28.00

30.17

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

TOPSOIL: Approximately 2" Organic mat

POORLY GRADED SAND WITH SILT

AND GRAVEL (SP-SM); moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, Gravels and cobbles fractured while driving (GCFWD)

SILTY GRAVEL WITH SAND (GM);

moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

POORLY GRADED GRAVEL WITH

SILT AND SAND (GP-GM); moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

Borehole finished at 30.2

Fr oz en C la ss

Fr os t C la ss uf c3

-2

PFS

PFS

F2

F1

TY

PE

BL

O t

N

WOH

50/4"

50/2"

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

SP-SM

GM

GP-GM

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2929

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 1

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3640422.78 E: 1683313.13 Handheld GPS

2. HOLE NUMBER

AP-2929

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Sep 01 2022

COMPLETED

Sep 01 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1356.0'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 30.2' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 30.2'

17. SIGNATURE AND TITLE OF INSPECTOR

Oliver Brown

USACE FORM 1836 Boring Designation AP-2929 Sheet 1 of 1

18.00

23.00

30.17

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

TOPSOIL: Approximately 2" Organic mat

WELL GRADED GRAVEL WITH SAND

(GW); gray to brown, moist, max size =

2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, Gravels and cobbles fractured while driving

(GCFWD)

WELL GRADED GRAVEL WITH SILT

AND SAND (GW-GM); gray to brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

POORLY GRADED GRAVEL WITH

SILT AND SAND (GP-GM); brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

Borehole finished at 30.2

Fr oz en C la ss

Fr os t C la ss uf c3

-2

PFS

PFS

PFS

F1

TY

PE

BL

O t

N

50/2"

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

GW

GW-

GM

GP-GM

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2930

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 1

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3640328.92 E: 1683520.37 Handheld GPS

2. HOLE NUMBER

AP-2930

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Sep 02 2022

COMPLETED

Sep 02 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1355.3'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 30.2' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 30.2'

17. SIGNATURE AND TITLE OF INSPECTOR

Oliver Brown

USACE FORM 1836 Boring Designation AP-2930 Sheet 1 of 1

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

TOPSOIL: Approximately 2" Organic mat

SILTY SAND WITH GRAVEL (SM);

brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, Gravels and cobbles fractured while driving

(GCFWD)

(continued on next page)

Fr oz en C la ss

Fr os t C la ss uf c3

-2

PFS

F3

TY

PE

BL

O t

N

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2931

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 2

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3640415.06 E: 1683184.76 Handheld GPS

2. HOLE NUMBER

AP-2931

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Sep 01 2022

COMPLETED

Sep 01 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1357.9'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 50.0' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 50.0'

17. SIGNATURE AND TITLE OF INSPECTOR

USACE FORM 1836 Boring Designation AP-2931 Sheet 1 of 2

50.00

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

SILTY SAND WITH GRAVEL (SM);

brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, Gravels and cobbles fractured while driving

(GCFWD)

Borehole finished at 50.0

Fr oz en C la ss

Fr os t C la ss uf c3

-2

TY

PE

BL

O t

N

50/4"

WOH

WOH

REC

SA

M

PL

E

N U

M

BE

R

LA

B C

LA

SS

SM

SM

SM

SM

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-35

-40

-45

-50

-55

-60

-65

-70

-75

Boring Designation AP-2931 DRILLING LOG (Cont Sheet) INSTALLATION

Ft. Greely Sheet 2 of 2

PROJECT COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3640415.06 E: 1683184.76 Handheld GPS

USACE FORM 1836 Boring Designation AP-2931 Sheet 2 of 2

18.00

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

TOPSOIL: Approximately 2" Organic mat

WELL GRADED GRAVEL WITH SILT

AND SAND (GW-GM); gray to brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, Gravels and cobbles fractured while driving (GCFWD)

SILTY SAND WITH GRAVEL (SM);

gray to brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

(continued on next page)

Fr oz en C la ss

Fr os t C la ss uf c3

-2

PFS

PFS

F3

TY

PE

BL

O t

N

50/2"

26/-2

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

GW-

GM

SM

SM

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2932

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 2

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3640321.19 E: 1683392.00 Handheld GPS

2. HOLE NUMBER

AP-2932

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Sep 02 2022

COMPLETED

Sep 02 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1356.5.'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 35.2' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 35.2'

17. SIGNATURE AND TITLE OF INSPECTOR

Oliver Brown

USACE FORM 1836 Boring Designation AP-2932 Sheet 1 of 2

35.17

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

SILTY SAND WITH GRAVEL (SM);

gray to brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

Borehole finished at 35.2

Fr oz en C la ss

Fr os t C la ss uf c3

-2

TY

PE

BL

O t

N

50/2"

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

SM

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-35

-40

-45

-50

-55

-60

-65

-70

-75

Boring Designation AP-2932 DRILLING LOG (Cont Sheet) INSTALLATION

Ft. Greely Sheet 2 of 2

PROJECT COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION METHOD:LOCATION COORDINATES

N: 3640321.19 E: 1683392.00 Handheld GPS

USACE FORM 1836 Boring Designation AP-2932 Sheet 2 of 2

13.00

30.50

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

TOPSOIL: Approximately 2" Organic mat

POORLY GRADED SAND WITH

GRAVEL (SP); gray to brown, moist, max size = 0.25 in., subrounded gravel, fine to coarse sand, nonplastic fines, Gravels and cobbles fractured while driving (GCFWD)

SILTY SAND WITH GRAVEL (SM);

gray to brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

Borehole finished at 30.5

Fr oz en C la ss

Fr os t C la ss uf c3

-2

PFS

PFS

F2

TY

PE

BL

O t

N

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

SP

GW

SM

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2933

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 1

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3640407.34 E: 1683056.39 Handheld GPS

2. HOLE NUMBER

AP-2933

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Aug 31 2022

COMPLETED

Aug 31 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1359.5'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 30.5' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 30.5'

17. SIGNATURE AND TITLE OF INSPECTOR

Oliver Brown

USACE FORM 1836 Boring Designation AP-2933 Sheet 1 of 1

9.50

16.50

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

TOPSOIL: Approximately 2" Organic mat

WELL GRADED GRAVEL WITH SAND

(GW); brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, Gravels and cobbles fractured while driving

(GCFWD)

POORLY GRADED GRAVEL WITH

SAND (GP); brown, moist, max size =

2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

Borehole finished at 16.5

Fr oz en C la ss

Fr os t C la ss uf c3

-2

PFS

PFS

PFS

TY

PE

BL

O t

N

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

GW

GP

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2934

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 1

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3640313.47 E: 1683263.62 Handheld GPS

2. HOLE NUMBER

AP-2934

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Aug 31 2022

COMPLETED

Aug 31 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1357.9'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 16.5' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 16.5'

17. SIGNATURE AND TITLE OF INSPECTOR

USACE FORM 1836 Boring Designation AP-2934 Sheet 1 of 1

23.00

28.00

31.50

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

POORLY GRADED GRAVEL WITH

SAND (GP); brown, moist, max size =

2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

POORLY GRADED GRAVEL WITH

SILT AND SAND (GP-GM); brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

SILTY GRAVEL WITH SAND (GM);

brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

Borehole finished at 31.5

Fr oz en C la ss

Fr os t C la ss uf c3

-2

PFS

F1

F2

TY

PE

BL

O t

N

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

GP

GP-GM

GM

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2935

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 1

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3640219.61 E: 1683470.86 Handheld GPS

2. HOLE NUMBER

AP-2935

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Aug 30 2022

COMPLETED

Aug 30 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1356.2'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 31.5' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 31.5'

17. SIGNATURE AND TITLE OF INSPECTOR

Oliver Brown

USACE FORM 1836 Boring Designation AP-2935 Sheet 1 of 1

9.50

15.50

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

TOPSOIL: Approximately 2" Organic mat

POORLY GRADED GRAVEL WITH

SILT AND SAND (GP-GM); brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, Gravels and cobbles fractured while driving (GCFWD)

POORLY GRADED GRAVEL WITH

SAND (GP); gray to brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

Borehole finished at 15.5

Fr oz en C la ss

Fr os t C la ss uf c3

-2

PFS

PFS

PFS

TY

PE

BL

O t

N

50/2"

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

GP-GM

GP

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2936

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 1

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3640305.75 E: 1683135.25 Handheld GPS

2. HOLE NUMBER

AP-2936

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Aug 31 2022

COMPLETED

Aug 31 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1359.7'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 15.5' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 15.5'

17. SIGNATURE AND TITLE OF INSPECTOR

USACE FORM 1836 Boring Designation AP-2936 Sheet 1 of 1

13.00

16.50

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

WELL GRADED GRAVEL WITH SAND

(GW); brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

POORLY GRADED SAND WITH

GRAVEL (SP); brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

Borehole finished at 16.5

Fr oz en C la ss

Fr os t C la ss uf c3

-2

PFS

PFS

TY

PE

BL

O t

N

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

GW

SP

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2937

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 1

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3640211.88 E: 1683342.48 Handheld GPS

2. HOLE NUMBER

AP-2937

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Aug 30 2022

COMPLETED

Aug 30 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1357.4'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 16.5' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 16.5'

17. SIGNATURE AND TITLE OF INSPECTOR

USACE FORM 1836 Boring Designation AP-2937 Sheet 1 of 1

16.50

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

POORLY GRADED GRAVEL WITH

SILT AND SAND (GP-GM); gray to brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

Borehole finished at 16.5

Fr oz en C la ss

Fr os t C la ss uf c3

-2

PFS

TY

PE

BL

O t

N

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

GP-GM

GP-GM

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2938

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 1

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3640298.03 E: 1683006.88 Handheld GPS

2. HOLE NUMBER

AP-2938

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Aug 31 2022

COMPLETED

Aug 31 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1360.7'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 16.5' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 16.5'

17. SIGNATURE AND TITLE OF INSPECTOR

Oliver Brown

USACE FORM 1836 Boring Designation AP-2938 Sheet 1 of 1

18.00

23.00

31.50

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

SILTY SAND WITH GRAVEL (SM);

brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

POORLY GRADED SAND WITH

GRAVEL (SP); brown, moist, max size = 0.25 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

SILTY SAND WITH GRAVEL (SM);

brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

Borehole finished at 31.5

Fr oz en C la ss

Fr os t C la ss uf c3

-2

PFS

F2

F2

TY

PE

BL

O t

N

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

SP

SM

SM

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2939

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 1

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3640204.16 E: 1683214.11 Handheld GPS

2. HOLE NUMBER

AP-2939

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Aug 30 2022

COMPLETED

Aug 30 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1358.6'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 31.5' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 31.5'

17. SIGNATURE AND TITLE OF INSPECTOR

USACE FORM 1836 Boring Designation AP-2939 Sheet 1 of 1

16.50

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

WELL GRADED GRAVEL WITH SILT

AND SAND (GW-GM); brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

POORLY GRADED GRAVEL WITH

SAND (GP); brown, moist, max size =

2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

Borehole finished at 16.5

Fr oz en C la ss

Fr os t C la ss uf c3

-2

PFS

PFS

TY

PE

BL

O t

N

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

GW-

GM

GP

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2940

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 1

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3640110.30 E: 1683421.34 Handheld GPS

2. HOLE NUMBER

AP-2940

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Aug 30 2022

COMPLETED

Aug 30 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1357.7'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 16.5' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 16.5'

17. SIGNATURE AND TITLE OF INSPECTOR

USACE FORM 1836 Boring Designation AP-2940 Sheet 1 of 1

7.50

8.50

16.50

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

TOPSOIL: Approximately 2" Organic mat

WELL GRADED GRAVEL WITH SILT

AND SAND (GW-GM); brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, Gravels and cobbles fractured while driving (GCFWD)

POORLY GRADED SAND WITH

GRAVEL (SP); brown, moist, max size = 0.25 in., subrounded gravel, medium sand, nonplastic fines, GCFWD

WELL GRADED GRAVEL WITH SAND

(GW); brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

Borehole finished at 16.5

Fr oz en C la ss

Fr os t C la ss uf c3

-2

PFS

PFS

PFS

F1

TY

PE

BL

O t

N

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

SP

GW

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2941

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 1

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3641197.84 E: 1683475.09 Handheld GPS

2. HOLE NUMBER

AP-2941

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Aug 30 2022

COMPLETED

Aug 30 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1348.6'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 16.5' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 16.5'

17. SIGNATURE AND TITLE OF INSPECTOR

USACE FORM 1836 Boring Designation AP-2941 Sheet 1 of 1

16.50

LE

G

EN

D

FIELD CLASSIFICATION OF MATERIALS

(Description)

WELL GRADED GRAVEL WITH SILT

AND SAND (GW-GM); brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

WELL GRADED GRAVEL WITH SAND

(GW); brown, moist, max size = 2.5 in., subrounded gravel, fine to coarse sand, nonplastic fines, GCFWD

Borehole finished at 16.5

Fr oz en C la ss

Fr os t C la ss uf c3

-2

S1

PFS

TY

PE

BL

O t

N

REC

SA

M

PL

E

N U

M

BE

R

LA

B

C

LA

SS

GW-

GM

GW

LABORATORY

M C

G ra ve l

Sa nd

Fi ne s

0.

m m

LL PI

PI

D

C ol d/ H ot (p pm

REMARKS

-5

-10

-15

-20

-25

-30

Boring Designation AP-2942

DRILLING LOG DIVISION

Pacific Ocean

INSTALLATION

Ft. Greely Sheet 1 of 1

1. PROJECT 10. COORDINATE SYSTEM VERTICAL

FTG251 - Maintenance Support Facility Ft. Greely, Alaska

NAD 1983 StatePlane Alaska 3 FIPS 5003 Feet NAVD88

LOCATION COORDINATES LOCATION METHOD:

N: 3641088.53 E: 1683425.58 Handheld GPS

2. HOLE NUMBER

AP-2942

3. DRILLING AGENCY

Geotek Alaska 11. DATE BORING

STARTED

Aug 30 2022

COMPLETED

Aug 30 2022

4. NAME OF DRILLER 12. HAMMER TYPE EFFICIENCY (%)

James Beckner Automatic, 30" drop, 340 lb

5. EQUIPMENT 13. SIZE AND TYPE OF BIT

Geoprobe 8040DT 4.25" HSA

6. DIRECTION OF BORING DEG FROM VERTICAL BEARING 14. ELEVATION SURFACE 1351.8'

15. ELEVATION GROUND WATER

7. THICKNESS OF OVERBURDEN 16.5' 16. TOTAL NUMBER CORE BOXES

8. DEPTH DRILLED INTO ROCK

9. TOTAL DEPTH OF BORING 16.5'

17. SIGNATURE AND TITLE OF INSPECTOR

Oliver Brown

USACE FORM 1836 Boring Designation AP-2942 Sheet 1 of 1

U.S. Army Corps of Engineers

APPENDIX C

LABORATORY TEST RESULTS

Laboratory Testing Summary ..................................................................................... 1 Sheet Laboratory Testing Results...................................................................................... 40 Sheets

Summary of Laboratory Test Results FTG251 Maintenance Support Facility

NGE-TFT Project #:6493-22

Moisture Content Passing 0.02mm Frost Class.