B08_SF1442_Attachment_13_Geotechnical_Report.pdf

August 13, 2018

Monica Quinones, P.E.

Jacobs 501 N. Broadway St. Louis, Missouri 63102

RE: Geotechnical Subsurface Investigation Data Report

Shenandoah National Park Water Line Conversion Draper Aden Associates Project No.18060124-010202

Dear Monica:

Draper Aden Associates (DAA) is pleased to present our data report of the geotechnical subsurface investigation completed for the proposed waterline conversion at the Big Meadows and Skyland Developed Areas in Shenandoah National Park in Luray, Virginia. This geotechnical study was completed in general accordance with Draper Aden Associates’ letter proposal, dated April 5, 2018 and Scope of Work for Geotechnical Subsurface Investigation for U.S. National Park Service (NPS) Project: SHEN 151064.

PROJECT INFORMATION

It is our understanding that the proposed waterline conversion includes replacing the existing spring fed water systems at the Big Meadows and Skyland developed areas with a new potable water supply supplied from a groundwater source.

Improvements at Big Meadows includes:

Replacing pumps and assemblies of existing wells, Rehabilitating one 100,000-gallon reservoir, Construction of a new water treatment building, Removal and replacement of approximately 6,500 linear feet of main distribution line.

Improvements at Skyland includes:

Rehabilitating above ground equipment in the existing two wells and well SL-1, A new well facility at SL-1, Rehabilitating two 50,000 gallon reservoirs, Constructing a new water treatment facility at the reservoir area, Connecting the new SL-G well to the existing distribution system with a new 1,500 linear feet waterline.

Shenandoah National Park Waterline Conversion

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OBJECTIVE AND SCOPE OF WORK

The objective of this geotechnical subsurface investigation was to generally characterize subsurface conditions in order to provide information and develop geotechnical engineering recommendations related to the subsurface and groundwater conditions, related to the proposed waterline conversion. Our scope of services included:

A subsurface exploration consisting of thirty -one (31) exploratory soil borings at each water treatment building site and along the proposed utility alignments with Standard Penetration Testing (SPT). Table 1 summarizes the details of the boring locations.

Laboratory testing of representative split-spoon and bulk samples in order to develop pertinent data related to the on-site soils to support our design recommendations.

Preparation of this geotechnical subsurface investigation data report, which summarizes our exploration program, laboratory testing, and geotechnical recommendations.

GENERAL SITE DESCRIPTION

Skyland

The Skyland project site is within Shenandoah National Park, near the Skyland Resort Lodge. The project site begins at the existing SL-G well, near the parking lot located west of the intersection of Skyland Upper Loop and Skyline Drive. The project site continues west along the shoulder of Skyland Upper Loop for approximately 1,500 feet and then turns southeast to connect to the existing Skyland reservoirs. A second project site is located along an existing driveway leading up to, and including, the existing SL-1 well site.

Both sites are wooded with mature forest and located in mountainous areas with slight to steep changes in grade.

Big Meadow

The project site is located approximately 10 miles south of the Skyland site, near the Harry F. Byrd, Sr.

Visitor Center along Skyline Dr. The site begins approximately 1,000 feet east of the intersection of Skyline Drive and Rapidan Fire Road and continues west to Rapidan Fire Road. The alignment then continues south along the shoulder of Rapidan Fire Road for approximately 4,000 feet before turning north to existing well BM-14. The total length of the project site is approximately 6,750 linear feet. The project site is relatively flat and predominantly grassed within the meadow, but mature forest is present beyond the treeline.

SUBSURFACE EXPLORATION PROGRAM

DAA conducted the subsurface exploration on June 20 through June 21, 2018, with Fishburne Drilling, Inc. Boring locations were surveyed by Draper Aden Associates. The Boring Location Plan, included in

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Section I of the Appendices, indicates the surveyed locations of the thirty-one (31) borings. Appendix Section II contains logs of the borings prepared by a Draper Aden Associates field representative.

Elevations included on the logs were obtained from the field survey.

During advancement of the thirty-one (31) soil borings with a track-mounted drill rig, utilizing 2 ¼-inch hollow-stem augers, the subsurface soils were continuously sampled for the first 10 feet and at intervals of 5 feet thereafter. Split spoon samples were taken by driving a 1⅜ inch I.D. split spoon sampler, in accordance with ASTM D1586-11. The sampler was first seated 6 inches to penetrate loose cuttings and then driven an additional 12 or 18 inches with a 140-pound hammer free falling 30 inches. The standard penetration resistance, or N-value, designates the number of hammer blows required to drive the sampler the second and third intervals. The N-value provides an indication of the relative density of the cohesionless and comparative consistency of the cohesive soils. It is also used in empirical geotechnical correlations to estimate the approximate shear strength properties of the soils. This exploration program utilized an automatic hammer, which produces approximately 30% more energy than traditional safety hammers. Our analysis considers this increased energy but blow count values on the logs do not show the corrections.

In limited instances during the subsurface exploration, the static weight of the hammer, rods, and split-spoon sampler penetrated into the subsurface soil without the aid of hammer blows. This condition is represented on the boring logs as zero (0) hammer blows. Occasionally, the split spoon sampler may not be able to penetrate the full 24 inches. Spoon Refusal (SR) conditions will occur when the subsurface material has very dense or hard soil strength or when encountering an obstruction. The blow count recorded at spoon refusal conditions indicates the depth of sampler penetration over limited increment.

The N-value for spoon refusal conditions is typically estimated as greater than 100 blows per foot (bpf) for this condition.

Auger refusal conditions were encountered at boring SKY-13a. An auger probe boring, SKY-13b, was advanced adjacent to boring SKY-13a, to determine if auger refusal conditions were due to a localized subsurface obstruction. A DAA representative visually classified subsurface soils from auger cuttings and documented the termination depth.

To reduce site impact and due to auger refusal conditions being frequently encountered at both the Big Meadows and Skyland project sites, back-to-back split-spoon sampling was performed instead of auger probes. The subsurface obstructions, interpreted to be boulders of varying size, caused auger refusal conditions, which could be interpreted as bedrock. In order to obtain more accurate refusal results along the utility alignments, a split-spoon sampler was driven from 0 to 1.5 feet, 1.5 to 3.0 feet, and 3.0 to 5.0 feet below existing grade without the use of augers between sampling.

Rock cores were performed at boring locations BM-12a and SKY-02. At both locations, the core drill cored through possible boulders and back into underlying soils. A split spoon sampler was then pushed to 5 feet below existing grade to reach the target depth.

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The DAA representative noted cave-in and groundwater depth measurements on the log notes, when applicable, at each soil boring. The soil test borings were backfilled with clean sand up to existing topsoil levels. Approved topsoil, collected from an on-site stockpile was then used to backfill the boring to grade.

No long-term groundwater measurements were taken as a part of this study.

SUBSURFACE CONDITIONS

Regional Geology

The Valley & Ridge Physiographic Province near the site is generally composed of long parallel ridges and valleys comprised of folded and faulted sedimentary rocks. The ridges are typically composed of resistant sandstones and conglomerates, with the valleys being composed of less-resistant carbonate rocks and shale. The age of the formations within the Valley & Ridge province ranges from Cambrian to Mississippian (approximately 570-300 million years).

Local Geology

According to the Geologic Map of Virginia (1993)1, the Big Meadows and Skyland project sites are underlain by the Catoctin Formation- metabasalt. The Catoctin Formation- metabasalt is characterized by grayish-green to dark-yellowish-green, find-grained, schistose chlorite- and actinolite-bearing metabasalt, commonly associated with epidosite segregations.

According to the Geologic Map of Virginia (1993)2, borings SKY-13a and SKY-13b were underlain by the Charnockite Formation. The Charnockite Formation is characterized by dusky-green, mesicratic, coarse-to very-coarse-grained, equigranular to porphyritic, massive to vaguely foliated pyroxene-bearing granite to granodiorite; contains clinopyroxene and orthopyroxene, intermediate-composition plagioclase, potassium feldspar, and blue quartz.

Encountered Soil Conditions

The attached boring logs represent the subsurface conditions encountered at the time of exploration.

Soil strata inferences, discussed below and indicated on the boring logs, represent an estimate of the subsurface conditions based on visual classifications of soils and laboratory classification test results. Note that the transitions between soil strata are generally less distinct than shown on the boring logs and are interpolated between the boring locations. For specific subsurface soil information, refer to the boring logs.

1 Rader, E.K., and Evans, N.H., editors, 1993, Geologic Map of Virginia: Virginia Division of Mineral Resources.

2 Rader, E.K., and Evans, N.H., editors, 1993, Geologic Map of Virginia: Virginia Division of Mineral

Resources.

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DAA observed a depth of approximately 2 to 6 inches of topsoil at our field explorations. The following descriptions generally describe the subsurface conditions encountered at our exploration locations:

Stratum S1: Encountered below the topsoil, Stratum S1 material consisted of fine-grained soils classified as Fat CLAY (CH), Elastic SILT (MH), and SILT (ML) with varying amounts of sand and gravel. The material extended to a depth ranging from 0 to 15 feet below existing grade, was observed to be light brown to reddish-brown in color, damp to moist, and exhibiting N-values ranging from 3 to 100+ bpf.

Stratum S2: was encountered below the S1 soils and consisted of Partially Weathered Rock (PWR).

PWR is a transitional material between soil and rock, with hard to very dense relative densities.

The Stratum S2 material was encountered below the Stratum S1 soils and extended to auger refusal conditions at depths up to 12 feet below grade. The S2 material was observed to be brown in color, moist, and exhibited N-values of 100+ bpf.

Refusal Our subsurface exploration encountered auger refusal conditions at depths ranging from 6 to 12 feet below existing grade.

Subsurface Water Subsurface water was not encountered during our subsurface exploration. Appropriate groundwater control, determined by the contractor, should be implemented if any excavation is to extend within 24 inches of the groundwater table.

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LABORATORY TEST RESULTS

Selected split-spoon and bulk samples obtained during our field exploration were tested in accordance with applicable ASTM International (ASTM) methods for Classification (ASTM D2487), Percent passing No.

200 sieve (ASTM D1140), Natural Moisture Content (ASTM D2216), Atterberg Limits (ASTM D4318), and standard Proctor (ASTM D698).

The following table summarizes the results of index laboratory testing, conducted by DAA’s U.S. Army Corps of Engineers Qualified Materials Testing Laboratory, which was performed to aid in our design recommendations. Detailed laboratory results are contained within Section III of the Appendices.

Table 1: Summary of Laboratory Results

Sample ID Sample Depth

Natural Moisture Content

Passing No.

200 Sieve

Atterberg Limits USCS Classification L.L. P.L. P.I.

BM-01 3'-5' 32.8% 52.6% 55 34 21 MH

BM-05 0'-2' 26.3% 41.3% 71 47 24 SM

BM-11 1.5'-3' 28.5% 13.1% 80 48 32 SC

BM-12 0'-2' 28.1% 25.5% 80 48 32 GM

BM-14 2'-4' 22.9% 30.8% 54 32 22 SM

BM-17 1.5'-3' 27.7% 60.3% 46 30 16 ML

SKY-02 0'-2' 15.5% 20.1% 54 36 18 GM

SKY-03 1.5'-3' 23.5% 31.7% 41 33 8 SM

SKY-08 0'-1.5' 17.2% 30.7% 55 33 22 SM

SKY-10 1.5'-3' 29.4% 25.8% 55 36 19 SM

SKY-11 0'-2' 46.7% 27.3% 111 77 34 SM

SKY-12 4'-6' 33.2% 20.5% 44 29 15 SM

SKY-13a 2'-4' 22.8% 58.9% 55 29 26 CH

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Table 2: Summary of Proctor and CBR Laboratory Results

Sample ID Sample Depth Natural

Moisture Content

Optimum Moisture Content

Maximum Dry Density

USCS

Classification

BM-01 0'-5' 32.8 16.7% 109.4 MH

BM-05 0'-5' 26.3% 28.2% 89.0 GM

BM-11 0'-5' 28.5% 18.2% 107.6 SC

BM-12 0'-5' 28.1% 20.4% 110.4 GM

SKY-02 0'-5' 15.5% 12.0% 129.0 GM

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08/13/2018

08/13/2018

LIMITATIONS

This report has been prepared for the exclusive use of Jacobs and its designated representatives for the project. Our conclusions and recommendations have been rendered in a manner consistent with the level and skill ordinarily exercised by members of the geotechnical engineering profession in the Commonwealth of Virginia at the time of our study. We make no other warranty, express or implied.

Our conclusions and recommendations are based on design information furnished to us and our experience. They do not necessarily reflect variations in the subsurface conditions, which have potential to exist intermediate of our borings and in unexplored areas of the site due to inherent variability of the subsurface conditions in this geologic region, as well as past land use. Should such variations become apparent during construction, it will be necessary for us to re-evaluate our conclusions and recommendations based upon on-site observations of the conditions.

If changes are made in the location or nature of the structure, then the recommendations presented in this report must not be considered valid unless the changes are reviewed by Draper Aden Associates, and our recommendations are modified or verified in writing. We request the opportunity to review the grading plan and applicable portions of the project specifications when the design is finalized. This review will allow us to check whether these documents are consistent with the intent of our recommendations.

Draper Aden Associates is not responsible for the conclusions, opinions or recommendations of others based on the data in this report.

If you have any questions please call our office at (804) 264-2228.

Sincerely, Draper Aden Associates

James Ward, P.G.

Project Geologist

John Z. Ding, P.E.

Senior Program Manager

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Attachments:

Site Vicinity Map Boring Location Plans

Key to Boring Logs Boring Logs

Boring Location Photo Log Laboratory Test Results Geotechnical Test Methods jward Text Box jstrunk Text Box Lat: 38.51233 Long: -78.42474 jstrunk Text Box Lat: 38.51091 Long: -78.42514 jstrunk Text Box Lat: 38.51040 Long: -78.42538 jstrunk Text Box Lat: 38.50960 Long: -78.42588 jstrunk Text Box Lat: 38.50959 Long: -78.42794 jstrunk Text Box Lat: 38.51001 Long: -78.43021 jstrunk Text Box Lat: 38.51064 Long: -78.43188 jstrunk Text Box Lat: 38.51113 Long: -78.43314 jstrunk Text Box Lat: 38.51162 Long: -78.43440 jstrunk Text Box Lat: 38.51206 Long: -78.43568 jstrunk Text Box Lat: 38.51244 Long: -78.43699 jstrunk Text Box Lat: 38.51297 Long: -78.43820 jstrunk Text Box Lat: 38.51383 Long: -78.43906 jstrunk Text Box Lat: 38.51480 Long: -78.43970 jstrunk Text Box Lat: 38.51587 Long: -78.44002 jstrunk Text Box Lat: 38.51683 Long: -78.43983 jstrunk Text Box Lat: 38.51685 Long: -78.43819 jward Text Box jstrunk Text Box Lat: 38.59629 Long: -78.37939 jstrunk Text Box Lat: 38.59626 Long: -78.37940 jstrunk Text Box Lat: 38.59132 Long: -78.37931 jstrunk Text Box Lat: 38.59171 Long: -78.37924 jstrunk Text Box Lat: 38.59218 Long: -78.37930 jstrunk Text Box Lat: 38.59278 Long: -78.37864 jstrunk Text Box Lat: 38.59298 Long: -78.37797 jstrunk Text Box Lat: 38.59302 Long: 78.37727 jstrunk Text Box Lat: 38.59289 Long: -78.37662 jstrunk Text Box Lat: 38.59253 Long: -78.37926 jstrunk Text Box Lat: 38.59273 Long: -78.37900 jstrunk Text Box Lat: 38.59297 Long: -78.37836 jstrunk Text Box Lat: 38.59310 Long: -78.37770 jstrunk Text Box Lat: 38.59307 Long: -78.37692

Clean Sands (Less than 5% fines)

MOISTURE DESCRIPTIONS

Determine percentages of sand and gravel from grain-size curve.

Depending on percentage of fines (fraction smaller than No. 200 sieve), course-grained soils are classified as follows:

Less than 5%..........................................................GW, GP, SW, SP More than 12%........................................................GM, GC, SM, SC 5% to 12%...........................Borderline cases requiring dual symbols

Sands with more than 12% fines

SW

SP

SM

SC

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

Silty sands, sand-silt mixtures

Clayey sands, sand-clay mixtures

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

Gravels with more than 12% fines

Silty gravels, gravel-sand mixtures

GP

GW

GM

GC

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

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

Clean Gravels (Less than 5% fines)

ML

CL

OL

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

Organic silts and organic silty clays of low plasticity

Inorganic clays of high plasticity, fat clays

HIGHLY

ORGANIC

SOILS

FINE-GRAINED SOILS

(More than 50% of material is smaller than No. 200 sieve)

COARSE-GRAINED SOILS

(More than 50% of material is larger than No. 200 sieve)

MH

CH

OH

Inorganic silts, micaceous or diatomaceous fine sandy or silty soils, elastic silts

PT

UNIFIED SOIL CLASSIFICATION & SYMBOL CHART

SW: Cu= D60/D10, > or equal to 6 & CC= D30/(D10*D60) between 1 & 3

GW: Cu= D60/D10, > or equal to 4 & CC= D30/(D10*D60) between 1 & 3

SM: Atterburg limits below "A" line or PI less than 4

SC: Atterburg limits above "A" line with PI greater than 7

Limits plotting in shaded zone with PI between 4 & 7 are borderline cases requiring dual symbols

PLASTICITY CHART

DRY: No apparent moisture, dusty

DAMP: Apparent moisture, below Plastic Limit

MOIST: Significant moist, at or above the Plastic Limit, can be rolled into a 1/8" thread

WET: Appears saturated, free water in voids and pores

Limits plotting on or above "A" line with PI between 4 & 7 are borderline cases requiring dual symbols

Clayey gravels, gravel-sand-clay mixtures

Organic clays of medium to high plasticity, organic silts

Organic clays of medium to high plasticity, organic silts

Inorganic silts and very fine sands, rock flour, silty or clayey fine sands or clayey silts with slight plasticity

SILTS

CLAYS

Liquid limit

50% or greater

SILTS

CLAYS

Liquid limit less than 50%

SANDS

More than 50% of coarse fraction passing No. 4 seive

GRAVELS

More than 50% of coarse fraction retained on No.

4 seive

Coarse-Grained Soil Fine-Grained Soil

Density Consistency

0 - 4

5 - 10

11 - 30

31 - 50

Loose

Medium Dense

Dense

0 - 1

2 - 4

5 - 8

9 - 15

Soft

SOIL DENSITY & CONSISTENCY DESCRIPTIONS

Stiff

N-Value

> 50

Very Loose

Very Dense

N-Value

16 - 30

> 30

Very Soft

Medium Stiff

Very Stiff

Hard

GP: Not meeting all gradation requirements for GW

GM: Atterburg limits below "A" line or PI less than 4

GC: Atterburg limits above "A" line with PI greater than 7

LABORATORY CLASSIFICATION CRITERIA

SP: Not meeting all gradation requirements for SW

Subsurface water level upon completion

Subsurface water first encountered

LOG SYMBOLS

Cave-in

32.852.6

Approximately 3" Topsoil

SANDY ELASTIC SILT (MH), brown, moist to damp, medium stiff to very stiff

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

2-3-2

2-4-5

5-7-9-7

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-01

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3510.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

/1

Approximately 8" Topsoil

FAT CLAY WITH SAND (CH), brown, moist to damp, soft

- very stiff

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

1-2-2

2-2-3

2-10-7-7

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-02

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3498.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

Approximately 6" Topsoil

FAT CLAY WITH GRAVEL (CH), brown, moist, soft to medium stiff

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

2-1-2

5-4-2

4-3-3-3

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-03

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3498.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

FAT CLAY WITH GRAVEL (CL), brown to light brown, moist, soft to medium stiff

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

1-1-2

2-3-3

3-3-5-7

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-04

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3506.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

26.341.3

Approximately 2" Topsoil

SILTY SAND WITH GRAVEL (SM), brown to light brown, moist to damp, loose to medium dense

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

3-4-3

2-4-4

3-6-5-6

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-05

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3519.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

FAT CLAY WITH GRAVEL (CH), brown to, moist to damp, stiff

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

3-4-5

1-1-2

4-5-7-8

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-06

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3513.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

FAT CLAY WITH SAND (CH), brown, moist to damp, soft to stiff, Residuum

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

1-1-2

3-5-6

4-7-8-9

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-07

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3505.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

SANDY FAT CLAY (CH), brown, moist, soft to very stiff

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

1-1-2

1-2-7

6-7-15-13

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-08

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3504.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

FAT CLAY WITH SAND (CH), brown, moist, medium stiff

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

3-3-3

3-2-1

4-10-10-7

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-09

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3510.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

Approximately 4" Topsoil

FAT CLAY WITH SAND (CH), brown, soft to medium stiff

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

1-2-2

2-2-3

3-3-4-5

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-10

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3518.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

28.513.1

CLAYEY SAND WITH GRAVEL (CH),

brown to light brown, moist to damp, medium dense

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

4-4-5

5-4-4

6-10-13-12

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-11

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3513.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

28.125.5

SILTY SAND WITH GRAVEL (SM), light gray, fine to coarse grained, Rock obstruction cored 3.5 to 4 ft, moist, medium dense to dense

SANDY FAT CH (CH), reddish brown, moist, medium stiff

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

50/5"

S1

3-4-4

11-15-50

4-6

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-12a

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3509.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

SANDY FAT CLAY (CH), light brown, moist, medium stiff to very stiff

SILT WITH SAND (ML), light brown, moist, medium stiff

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

Catoctin Formation

S1

S2

9-18-9

3-6-5

3-3-3-4

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-13

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3499.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

22.930.8

SILTY SAND WITH GRAVEL (SM),

yellowish brown to reddish brown, moist, loose to medium dense

Bottom of borehole at 15.0 feet.

Target depth

RESIDUUM

Catoctin Formation

S1

7-6-5-5

3-3-4-6

5-4-4-3

3-3-2-3

4-7-6-7

16-15-15-50

15.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-14

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3482.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

FAT CLAY WITH SAND (CH), dark brown to light brown, moist, medium stiff

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

2-4-3

2-4-4

4-5-5-6

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-15

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3509.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

FAT CLAY WITH SAND (CH), light brown, moist, soft to medium stiff

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

2-1-2

2-4-4

5-8-8-7

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-16

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3505.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

27.760.3

SANDY SILT (ML), brown, moist to damp, soft to medium stiff

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

1-2-2

2-3-2

3-4-5-8

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

BM-17

Total Depth

REMARKS

June 21, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3466.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

SILT WITH SAND (ML), light brown, fine sand, moist to damp, stiff to hard

Partially Weathered Rock sampled as: SILTY GRAVEL (GM), light brown to light gray, fine to coarse grained, damp, very dense

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

Catoctin Formation

50/2"

S1

S2

4-5-5

8-15-30

13-33-50

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

SKY-01

Total Depth

REMARKS

June 20, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3689.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

15.520.1

SILTY SAND WITH GRAVEL(SM), light brown, Rock obstruction cored from 2.2 to 3 feet, damp, stiff to hard

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

50/3"

S1

4-2-7

13-50

5-4

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

SKY-02

Total Depth

REMARKS

June 20, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3685.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

23.531.7

SILTY SAND WITH GRAVEL (SM), light brown to brown, fine-grained, damp, loose to medium dense

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

6-6-8

10-3-3

4-10-10-7

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

SKY-03

Total Depth

REMARKS

June 20, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3682.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

SANDY SILT (ML), light brown, fine-grained, damp, medium dense

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

4-9-6

4-5-8

4-7-4-4

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

SKY-04

Total Depth

REMARKS

June 20, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3682.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1 damp, medium dense

Partially Weathered Rock (PWR) sampled as:

SILTY SAND (SM), light brown, fine-grained, damp, very dense

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

Catoctin Formation

50/3"

S1

S2

3-10-7

7-10-15

8-8-50

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

SKY-05

Total Depth

REMARKS

June 20, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3683.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1 damp, loose to medium dense

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

4-4-4

3-4-3

4-7-5-6

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

SKY-06

Total Depth

REMARKS

June 20, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3686.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1 damp, medium dense

- dense

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

3-6-9

4-8-10

11-21-16-22

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

SKY-07

Total Depth

REMARKS

June 20, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3691.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

17.230.7

SILTY SAND WITH GRAVEL (SM), light brown, fine- to medium-grained, with fine gravel, damp to moist, loose to medium dense

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

2-2-5

8-5-13

9-6-6-4

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

SKY-08

Total Depth

REMARKS

June 20, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3698.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1 damp, medium dense to very dense

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

High blow counts due to gravel obstruction

S1

2-4-6

28-13-49

13-14-9-6

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

SKY-09

Total Depth

REMARKS

June 20, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3707.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

29.425.8

Approximately 5" Topsoil

SILTY SAND WITH GRAVEL (SM), light brown, fine- to coarse-grained, with fine gravel, damp, loose to medium dense

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

S1

2-8-4

4-5-3

4-15-11-11

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

SKY-10

Total Depth

REMARKS

June 20, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3731.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

46.727.3

SILTY SAND WITH GRAVEL (SM), light brown to brown, fine- to medium-grained, damp, medium dense to dense

Bottom of borehole at 5.0 feet.

Target depth

RESIDUUM

34111

S1

3-6-4

4-12-5

15-22-20-50

5.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

SKY-11

Total Depth

REMARKS

June 20, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3761.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

33.220.5

SILTY SAND WITH GRAVEL (SM), light brown with light gray, damp, medium dense

Partially Weathered Rock (PWR) sampled as:

SILTY SAND WITH GRAVEL (SM), light brown to brown, fine- to coarse-grained, with fine gravel, damp, dense to very dense

Bottom of borehole at 12.0 feet.

Equipment refusal

RESIDUUM

Catoctin Formation

S1

S2

1-5-6-7

4-7-5-3

6-5-4-4

19-25-25-32

23-22-22-16

12.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

SKY-12

Total Depth

REMARKS

June 20, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3776.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

22.858.9

GRAVELLY FAT CLAY WITH SAND (CH),

light brown, medium stiff, Residuum

Bottom of borehole at 6.0 feet.

Equipment refusal

RESIDUUM

S1

7-4-4-5

10-6-8-9

9-5-5-4

6.0'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

SKY-13a

Total Depth

REMARKS

June 20, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3500.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

GRAVELLY FAT CLAY WITH SAND (CH),

light brown, medium stiff, Residuum

Bottom of borehole at 5.5 feet.

Equipment refusal

RESIDUUM

S1

5.5'

PP

(tsf)

H2O

Client:

Project:

Location:

Logged by:

Project No.:

Driller:

Method:

FinesDESCRIPTION (USCS)

SKY-13b

Total Depth

REMARKS

June 20, 2018JW

Jacobs

Shenandoah Park

Luray, Virginia

PI

(1 of 1)

3500.0'Elev GS: Completion Date:

18060124-010202

Fishburne

LL

N

ValueElev.

Depth

Blow Counts / Recovery (%)

2-1/4" HSA w/SPT w/ Autohammer

G E

O T

E C

H S

P T

S H

E N

A N

D O

A H

N A

T

IO

N A

L P

A R

K B

O R

IN

G

L O

G S

.G P

J D

F _D

A A

.G D

T

/1

Shenandoah Park Improvements Skyland Site

Sky-01 Sky-02

Sky-03 Sky-04

Sky-05 Sky-06

Sky-07 Sky-08

Sky-09 Sky-10

Sky-11 Sky-12

Sky-13a Sky-13b

Big Meadows Site

BM-01 BM-02

BM-03 BM-04

BM-05 BM-06

BM-07 BM-08

BM-09 BM-10

BM-11 BM-12

BM-13

BM-14

BM-15

BM-16

BM-17

Summary Of Laboratory Tests

Shenandoah National Park

DAA# 18060124-010202

Prepared by: CBW Date: 7/13 Sample Data

Sample ID BM-01 BM-05 BM-11 BM-12 SKY-02 SKY-11 BM-14 BM-17 Sample Depth 3'-5' 0'-2' 1.5'-3' 0'-2' 0'-2' 0'-2' 2'-4' 1.5'-3' Sample Type Bulk Bulk Bulk Bulk Bulk Bulk Jar Jar

Visual Description Brown

Natural Moisture Content, % 32.8% 26.3% 28.5% 28.1% 15.5% 46.7% 22.9% 27.7%

Liquid Limit 55 71 88 80 54 91 54 46 Plastic Limit 34 47 30 48 36 77 32 30 Plastic Index 21 24 59 32 18 14 22 16

Passing No. 200 Sieve, % 52.6% 41.3% 13.1% 25.5% 20.1% 27.3% 30.8% 60.3% Passing No. 4 Sieve, % 87.6% 65.4% 63.9% 51.3% 48.6% 77.2% 83.8% 87.1%

USCS Group Symbol MH SM SC SM GM SM SM ML USCS Group Name Sandy SILT

Maximum Dry Density, pcf 109.4 89.0 107.6 110.4 129.0 - - - Optimum Moisture Content, % 16.7% 28.2% 18.2% 20.4% 12.0% - - -

Oversized Correction

Oversized Correction

Silty-Clayey GRAVEL with

Sand

Silty SAND with Gravel

Silty SAND with Gravel

Reddish- Brown

Sandy Elastic Silt

Silty SAND with Gravel

Clayey SAND with Gravel

Silty SAND with Gravel

Dark Brown Dark Brown Reddish- Brown

Classification Data

Standard Proctor Data

Dark Brown Dark BrownReddish- Brown

Summary Of Laboratory Tests

DAA# 18060124-010202

Prepared by: CBW Date: 7/13 Sample Data

Sample ID Sample Depth Sample Type

Visual Description

Natural Moisture Content, %

Liquid Limit Plastic Limit Plastic Index

Passing No. 200 Sieve, % Passing No. 4 Sieve, %

USCS Group Symbol USCS Group Name

Maximum Dry Density, pcf Optimum Moisture Content, %

Classification Data

Standard Proctor Data

SKY-03 SKY-08 SKY-10 SKY-12 SKY-13a 1.5'-3' 0'-1.5' 1.5'-3' 4'-6' 2'-4'

Jar Jar Jar Jar Jar

23.5% 17.2% 29.4% 33.2% 22.8%

41 55 55 44 55 33 33 36 29 29 8 22 19 15 26

31.7% 30.7% 25.8% 20.5% 58.9% 71.4% 78.9% 65.4% 61.5% 72.6%

SM SM SM SM CH

Silty SAND with Gravel

Silty SAND with Gravel

Gravelly Fat CLAY with

Sand

Silty SAND with Gravel

Silty SAND with Gravel

BrownBrown Reddish- Brown

Greenish-Gray Reddish- Brown

Soil Classification Calculations

DAA# 18060124-010202

Prepared By: CBW

Sample ID BM-01 Sample Recieved: 6/25/2018 Sample Depth 3'-5' Date Tested: 6/26/2018

Visual Sample Description Reddish-Brown Sandy Elastic SILT

Natural Moisture Content: ASTM D 2216 Pan ID 19 Pan Wt 188.59 grams

Pan + Soil (wet) 334.45 grams Pan + Soil (dry) 298.40 grams

Natural Moisture Content 32.8%

Coarse or Fine Grained: ASTM D 422 Pan + Soil retained on No. 200 sieve

(dry) 240.65 grams Percent Passing No. 200 Sieve 52.6%

Pan + Soil retained on No. 4 sieve (dry) 202.19 grams

Percent Passing No. 4 Sieve 87.6% Soil Classifies as Fine-Grained Soil

Atterberg Limits: ASTM D 4318 7/2/2018 Liquid Limit

No of Blows 15 28 30 Pan ID 101 108 201 Pan Wt 24.02 33.15 27.67

Pan + Soil (wet) 54.15 46.30 48.76 Pan + Soil (dry) 42.78 41.70 41.58

Moisture Content 60.6% 53.8% 51.6% Liquid Limit 57 55 53 Liquid Limit 55

Plastic Limit Pan ID 352 354

Pan Weight 9.07 9.14 Pan + Soil (wet) 20.72 19.64 Pan + Soil (dry) 17.76 16.96

Moisture Content 34.1% 34.3% Plastic Limit 34

Plastic Index 21

USCS Classification: ASTM D 2487 Group Symbol MH

Group Name Sandy Elastic SILT

Date Tested:

Grain Size Distribution Calculations

DAA# 18060124-010202

Prepared By: CBW

Sample ID BM-01 Sample Depth 3'-5'

Mechanical Analysis: ASTM D 422 Sieve Weight Percent Sieve Percent

Size Retained Retained Size, mm Passing 1" 0.00 0.0% 25.00 100.0%

3/4" 0.00 0.0% 19.00 100.0% 1/2" 7.24 6.6% 12.50 93.4% 3/8" 4.04 3.7% 9.50 89.7%

No. 4 2.32 2.1% 4.75 87.6% No. 10 8.26 7.5% 2.00 80.1% No. 40 11.88 10.8% 0.425 69.3%

No. 100 9.78 8.9% 0.15 60.4% No. 200 8.38 7.6% 0.075 52.7%

Hydrometer Analysis 0.0433 50.2%

0.0277 47.9%

0.0167 45.6%

0.0124 43.5%

0.0091 41.4%

0.0049 39.8%

0.0022 38.5%

0.0%

10.0%

20.0%

30.0%

40.0%

50.0%

60.0%

70.0%

80.0%

90.0%

100.0%

0.0010.0100.1001.00010.000100.000

Pe rc en t P as si ng

Sieve Size, mm

Sieve Analysis

Gravel Sand Silt and Clay

Proctor Test Report

DAA# 18060124-010202

Prepared By: CBW

Soil and Test Method Data Sample ID BM-01 6/25/2018

Sample Depth 3'-5' 6/28/2018 Sample Classification Sandy Elastic SILT USCS Group Symbol MH

Test Method ASTM D698, Method B, with mechanical hammer Sample Preparation Air dried and sieved through a 3/8" sieve.

Mold Size, in 4.0 Assumed Specific Gravity: 2.65

Test Data #1 #2 #3 #4 #5 Moisture Content 13.1% 14.9% 16.9% 18.8%

Dry Density, pcf 102.2 107.1 109.2 104.9

Date Tested:

Sample Received:

101.0

102.0

103.0

104.0

105.0

106.0

107.0

108.0

109.0

110.0

12.0% 13.0% 14.0% 15.0% 16.0% 17.0% 18.0% 19.0% 20.0%

D ry

D en si ty

, p cf

Moisture Content, %

Moisture-Density Curve

Zero Air Voids Proctor Points Perm Points

Maximum Dry Density, pcf = 109.4 , Optimum Moisture, % = 16.7

DAA# 18060124-010202

Prepared By: CBW

Sample ID BM-05 Sample Recieved: 6/25/2018 Sample Depth 0'-2' Date Tested: 6/26/2018

Visual Sample Description Dark Brown Silty SAND with Gravel

Natural Moisture Content: ASTM D 2216 Pan ID 9 Pan Wt 189.21 grams

Pan + Soil (wet) 534.95 grams Pan + Soil (dry) 462.99 grams

Natural Moisture Content 26.3%

Coarse or Fine Grained: ASTM D 422 Pan + Soil retained on No. 200 sieve

(dry) 349.87 grams Percent Passing No. 200 Sieve 41.3%

Pan + Soil retained on No. 4 sieve (dry) 284.01 grams

Percent Passing No. 4 Sieve 65.4% Soil Classifies as Coarse-Grained Soil

Atterberg Limits: ASTM D 4318 6/27/2018 Liquid Limit

No of Blows 17 22 32 Pan ID 93 103 109 Pan Wt 30.12 27.44 25.02

Pan + Soil (wet) 42.07 39.38 35.82 Pan + Soil (dry) 36.89 34.39 31.48

Moisture Content 76.5% 71.8% 67.2% Liquid Limit 73 71 69 Liquid Limit 71

Plastic Limit Pan ID 316 356

Pan Weight 9.05 9.11 Pan + Soil (wet) 19.69 19.60 Pan + Soil (dry) 16.30 16.25

Moisture Content 46.7% 46.9% Plastic Limit 47

Plastic Index 24

USCS Classification: ASTM D 2487 Group Symbol SM

Group Name Silty SAND with Gravel

DAA# 18060124-010202

Prepared By: CBW

Sample ID BM-05 Sample Depth 0'-2'

Mechanical Analysis: ASTM D 422 Sieve Weight Percent Sieve Percent

Size Retained Retained Size, mm Passing 1" 0.00 0.0% 25.00 100.0%

3/4" 44.49 16.3% 19.00 83.7% 1/2" 35.05 12.8% 12.50 70.9% 3/8" 3.78 1.4% 9.50 69.6%

No. 4 11.48 4.2% 4.75 65.4% No. 10 12.48 4.6% 2.00 60.8% No. 40 25.86 9.4% 0.425 51.4%

No. 100 17.72 6.5% 0.15 44.9% No. 200 10.46 3.8% 0.075 41.1%

Hydrometer Analysis 0.0433 38.9%

0.0289 36.9%

0.0178 34.9%

0.0132 33.1%

0.0095 31.3%

0.0051 29.9%

0.0023 28.8%

0.0%

10.0%

20.0%

30.0%

40.0%

50.0%

60.0%

70.0%

80.0%

90.0%

100.0%

0.0010.0100.1001.00010.000100.000

Pe rc en t P as si ng

Sieve Size, mm

DAA# 18060124-010202

Prepared By: CBW

Soil and Test Method Data Sample ID BM-05 6/25/2018

Sample Depth 0'-2' 6/28/2018 Sample Classification Silty SAND with Gravel USCS Group Symbol SM

Test Method ASTM D698, Method B, with mechanical hammer Sample Preparation Air dried and sieved through a 3/8" sieve.

Mold Size, in 4.0 Assumed Specific Gravity: 2.65

Test Data #1 #2 #3 #4 #5 Moisture Content 26.3% 28.0% 29.9% 31.9%

Dry Density, pcf 86.8 88.9 87.8 85.4

Date Tested:

Sample Received:

84.0

85.0

86.0

87.0

88.0

89.0

90.0

25.0% 26.0% 27.0% 28.0% 29.0% 30.0% 31.0% 32.0% 33.0%

D ry

D en si ty

, p cf

Moisture Content, %

Moisture-Density Curve

Maximum Dry Density, pcf = 89.0, Optimum Moisture, % = 28.2

DAA# 18060124-010202

Prepared By: CBW

Sample ID BM-11 Sample Recieved: 6/25/2018 Sample Depth 1.5'-3' Date Tested: 6/26/2018

Visual Sample Description Reddish-Brown with Clayey SAND with Gravel

Natural Moisture Content: ASTM D 2216 Pan ID 29 Pan Wt 191.90 grams

Pan + Soil (wet) 308.00 grams Pan + Soil (dry) 282.23 grams

Natural Moisture Content 28.5%

Coarse or Fine Grained: ASTM D 422 Pan + Soil retained on No. 200 sieve

(dry) 270.38 grams Percent Passing No. 200 Sieve 13.1%

Pan + Soil retained on No. 4 sieve (dry) 224.48 grams

Percent Passing No. 4 Sieve 63.9% Soil Classifies as Coarse-Grained Soil

Atterberg Limits: ASTM D 4318 7/2/2018 Liquid Limit

No of Blows 16 22 33 Pan ID 72 71 79 Pan Wt 11.09 10.94 10.77

Pan + Soil (wet) 28.80 19.76 21.41 Pan + Soil (dry) 20.17 15.60 16.58

Moisture Content 95.0% 89.4% 83.2% Liquid Limit 90 88 86 Liquid Limit 88

Plastic Limit Pan ID 74 78

Pan Weight 4.24 4.20 Pan + Soil (wet) 15.48 17.70 Pan + Soil (dry) 12.87 14.57

Moisture Content 30.3% 30.2% Plastic Limit 30

Plastic Index 59

USCS Classification: ASTM D 2487 Group Symbol SC

Group Name Clayey SAND with Gravel

DAA# 18060124-010202

Prepared By: CBW

Sample ID BM-11 Sample Depth 1.5'-3'

Mechanical Analysis: ASTM D 422 Sieve Weight Percent Sieve Percent

Size Retained Retained Size, mm Passing 1" 0.00 0.0% 25.00 100.0%

3/4" 0.00 0.0% 19.00 100.0% 1/2" 11.92 13.2% 12.50 86.8% 3/8" 6.98 7.7% 9.50 79.1%

No. 4 13.68 15.1% 4.75 63.9% No. 10 14.72 16.3% 2.00 47.6% No. 40 14.38 15.9% 0.425 31.7%

No. 100 9.09 10.1% 0.15 21.7% No. 200 6.95 7.7% 0.075 14.0%

Hydrometer Analysis 0.0464 13.3%

0.0304 12.6%

0.0182 12.0%

0.0133 11.4%

0.0097 10.8%

0.0051 10.4%

0.0023 10.0%

0.0%

10.0%

20.0%

30.0%

40.0%

50.0%

60.0%

70.0%

80.0%

90.0%

100.0%

0.0010.0100.1001.00010.000100.000

Pe rc en t P as si ng

Sieve Size, mm

DAA# 18060124-010202

Prepared By: CBW

Soil and Test Method Data Sample ID BM-11 6/25/2018

Sample Depth 1.5'-3' 6/28/2018 Sample Classification Clayey SAND with Gravel USCS Group Symbol SC

Test Method ASTM D698, Method B, with mechanical hammer Sample Preparation Air dried and sieved through a 3/8" sieve.

Mold Size, in 4.0 Assumed Specific Gravity: 2.65

Test Data #1 #2 #3 #4 #5 Moisture Content 16.2% 18.8% 19.9% 22.3%

Dry Density, pcf 106.3 107.4 106.7 102.9

Date Tested:

Sample Received:

102.0

103.0

104.0

105.0

106.0

107.0

108.0

109.0

14.0% 15.0% 16.0% 17.0% 18.0% 19.0% 20.0% 21.0% 22.0% 23.0%

D ry

D en si ty

, p cf

Moisture Content, %

Moisture-Density Curve

Maximum Dry Density, pcf = 107.6, Optimum Moisture, % = 18.2

DAA# 18060124-010202

Prepared By: CBW

Sample ID BM-12 Sample Recieved: 6/25/2018 Sample Depth 0'-2' Date Tested: 6/26/2018

Visual Sample Description Dark Brown Silty SAND with Gravel

Natural Moisture Content: ASTM D 2216 Pan ID 26 Pan Wt 194.53 grams

Pan + Soil (wet) 512.43 grams Pan + Soil (dry) 442.66 grams

Natural Moisture Content 28.1%

Coarse or Fine Grained: ASTM D 422 Pan + Soil retained on No. 200 sieve

(dry) 379.39 grams Percent Passing No. 200 Sieve 25.5%

Pan + Soil retained on No. 4 sieve (dry) 315.45 grams

Percent Passing No. 4 Sieve 51.3% Soil Classifies as Coarse-Grained Soil

Atterberg Limits: ASTM D 4318 6/27/2018 Liquid Limit

No of Blows 17 22 32 Pan ID 71 65 69 Pan Wt 10.94 10.95 10.95

Pan + Soil (wet) 21.76 21.18 20.76 Pan + Soil (dry) 16.76 16.61 16.53

Moisture Content 85.9% 80.7% 75.8% Liquid Limit 82 80 78 Liquid Limit 80

Plastic Limit Pan ID 81 78

Pan Weight 4.30 4.23 Pan + Soil (wet) 14.62 14.59 Pan + Soil (dry) 11.26 11.21

Moisture Content 48.3% 48.4% Plastic Limit 48

Plastic Index 32

USCS Classification: ASTM D 2487 Group Symbol SM

DAA# 18060124-010202

Prepared By: CBW

Sample ID BM-12 Sample Depth 0'-2'

Mechanical Analysis: ASTM D 422 Sieve Weight Percent Sieve Percent

Size Retained Retained Size, mm Passing 1" 0.00 0.0% 25.00 100.0%

3/4" 48.44 19.5% 19.00 80.5% 1/2" 25.78 10.4% 12.50 70.1% 3/8" 17.76 7.2% 9.50 62.9%

No. 4 28.94 11.7% 4.75 51.3% No. 10 22.75 9.2% 2.00 42.1% No. 40 24.49 9.9% 0.425 32.2%

No. 100 12.02 4.8% 0.15 27.4% No. 200 5.20 2.1% 0.075 25.3%

Hydrometer Analysis 0.0445 24.0%

0.0294 22.8%

0.0178 21.6%

0.0132 20.5%

0.0095 19.4%

0.0050 18.6%

0.0022 17.9%

0.0%

10.0%

20.0%

30.0%

40.0%

50.0%

60.0%

70.0%

80.0%

90.0%

100.0%

0.0010.0100.1001.00010.000100.000

Pe rc en t P as si ng

Sieve Size, mm

DAA# 18060124-010202

Prepared By: CBW

Soil and Test Method Data Sample ID BM-12 6/25/2018

Sample Depth 0'-2' 6/28/2018 Sample Classification Silty SAND with Gravel USCS Group Symbol SM

Test Method ASTM D698, Method B, with mechanical hammer Sample Preparation Air dried and sieved through a 3/8" sieve.

Mold Size, in 4.0 Assumed Specific Gravity: 2.65

Test Data #1 #2 #3 #4 #5 Moisture Content 30.0% 32.2% 34.3% 35.9%

Dry Density, pcf 79.5 86.3 85.7 82.9

Date Tested:

Sample Received:

77.0

79.0

81.0

83.0

85.0

87.0

89.0

29.0% 31.0% 33.0% 35.0% 37.0% 39.0%

D ry

D en si ty

, p cf

Moisture Content, %

Moisture-Density Curve

Zero Air Voids Proctor Points…